Anti-collapse supporting structure of sofa and sofa

Abstract

The utility model relates to the technical field of sofa furniture, in particular to an anti-collapse supporting structure of a sofa and the sofa. The supporting beam is fixedly arranged on the bottom frame; the sofa comprises a supporting beam, an elastic piece fixedly arranged on the supporting beam and used for supporting the bottom of a sitting supporting piece, and further comprises a seat frame, the sitting supporting piece installed in the seat frame, a sitting cushion located above the sitting supporting piece and a sofa collapse prevention supporting structure located below the sitting supporting piece. The sofa has the effect of improving the supporting degree of a sofa product, and is good in rebound resilience and not prone to collapse and wrinkling.

Description

Technical Field

[0001] The utility model relates to the technical field of sofa furniture, in particular to a sofa anti-collapse support structure and a sofa. Background Art

[0002] Sofa products are an indispensable part of home decoration. As people's demand for comfort and decoration continues to increase, they also pay more attention to the development of quality, design and comfort. Sofa products have maintained a steady growth trend and continuously promoted product upgrades.

[0003] In the prior art, a sofa usually includes a seat frame and a sitting cushion. In order to improve comfort, a sitting support such as a serpentine spring, a leaf spring or an elastic band is usually fixedly installed on the seat frame, and the sitting cushion is arranged on the sitting support. The sitting support provides rebound support for the sitting cushion, thereby improving comfort.

[0004] However, most of the current sofa structures still have the defect of insufficient support. After long-term use, the sitting support parts are prone to plastic deformation, which in turn affects the rebound of the seat surface, making the seat surface prone to collapse, affecting the user experience of the sofa. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0005] The utility model provides a sofa anti-collapse support structure and a sofa, so as to solve the problem of insufficient support of current sofa products.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] In the first aspect, the utility model provides a sofa anti-collapse support structure adopts the following technical solutions:

[0008] A sofa anti-collapse support structure comprises: a bottom frame; a support beam fixedly arranged on the bottom frame; and an elastic member fixedly arranged on the support beam and used for supporting the bottom of a sitting support member.

[0009] Preferably, the bottom frame includes two half-frames that are arranged opposite to each other and slidably connected; the two ends of the support beam are respectively connected to the two sides of any half-frame, and the length direction of the support beam is perpendicular to the sliding direction of the two half-frames; or, the two ends of the support beam are respectively arranged on the two half-frames, the support beam is telescopically arranged, and the telescopic direction of the support beam is parallel to the sliding direction of the two half-frames.

[0010] Preferably, the bottom frame includes four top corner pieces, and each two adjacent top corner pieces are slidably connected via a connecting rod; each two adjacent top corner pieces and the connecting rod between the two adjacent top corner pieces constitute a half frame.

[0011] Preferably, the bottom frame further comprises a first locking member, which is arranged on any of the half frames and is used to lock and position the two half frames together.

[0012] Preferably, when the two ends of the support beam are respectively arranged on two half frames, the support beam includes: a first beam plate, one end of which is fixedly arranged on one half frame; a second beam plate, one end of which is fixedly arranged on the other half frame, and the other end is slidably connected to the other end of the first beam plate; wherein the sliding directions of the first beam plate and the second beam plate are parallel to the sliding directions of the two half frames.

[0013] Preferably, the support beam further includes a second locking member, which is respectively connected to the first beam plate and the second beam plate, and is used to fix the first beam plate and the second beam plate to each other.

[0014] Preferably, the middle portion of the support beam is raised compared to both ends.

[0015] Preferably, the elastic member includes a plurality of compression springs, one end of the compression spring is fixedly arranged on the support beam, and the other end is used to support the seating support member.

[0016] In the second aspect, the utility model provides a sofa adopting the following technical solution:

[0017] A sofa comprises a seat frame, a seating support installed in the seat frame, a seating cushion located above the seating support, and a sofa anti-collapse supporting structure located under the seating support.

[0018] Preferably, the upper part, the middle part or the bottom part of the seating cushion is filled with a rebound layer.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the bottom frame supports the support beam, so that the support beam and the bottom frame are combined to form a stable plane frame structure. On this basis, the elastic parts on the support beam can effectively absorb the pressure on the sitting support parts, so that the pressure is distributed to the stable plane frame structure through the elastic parts. At this time, the accumulation of mechanical fatigue of the sitting support parts can be slowed down, plastic deformation is not easy, and rapid rebound can be achieved, and the support degree of the sofa product is significantly optimized and improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a sofa product in the prior art;

[0022] Figure 2 It is a structural schematic diagram of the support structure in the first embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the support beam and the elastic member in the first embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the support structure in the second embodiment of the present utility model;

[0025] Figure 5 It is a structural schematic diagram of the support structure in the third embodiment of the present utility model;

[0026] Figure 6 It is a structural schematic diagram of the support beam and the elastic member in the third embodiment of the utility model;

[0027] Figure 7 It is a structural schematic diagram of a sofa product in Embodiment 4 of the present utility model;

[0028] Figure 8 It is a structural schematic diagram of the sitting cushion in the fourth embodiment of the present utility model.

[0029] Reference numerals:

[0030] 1. Seat frame; 2. Seat cushion; 21. Seat cotton; 22. Fabric layer; 23. Resilience layer; 3. Seat support; 4. Bottom frame; 41. Half frame; 5. Support beam; 51. First beam plate; 52. Second beam plate; 53. Sliding seat; 6. Elastic member; 7. Connecting rod; 8. First locking member; 9. Second locking member; 10. Top corner member. DETAILED DESCRIPTION

[0031] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present utility model, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centrally arranged component at the same time.

[0033] The following is combined with Figure 1-8 The technical solution of the utility model is further illustrated by specific implementation methods.

[0034] Embodiment 1:

[0035] Please refer to Figure 1 At present, the conventional sofa structure mainly includes a seat frame 1 and a sitting cushion 2, wherein the sitting cushion 2 mainly includes a seat cotton 21 and a fabric layer 22. The seat frame 1 is mainly a wooden box-type frame structure, with a cavity inside the seat frame 1, and a sitting support 3 is fixedly installed on the seat frame 1. The sitting support 3 usually includes components such as a serpentine spring, a leaf spring and an elastic band. The serpentine spring plays a major supporting role, and the specific installation method of the sitting support 3 is not described here; the seat cotton 21 is arranged on the sitting support 3, and the sitting support 3 plays a supporting and rebounding role; the fabric layer 22 is usually made of leather or cloth, which is covered on the surface of the seat frame 1 and the seat cotton 21 to enhance the touch; but at present, the sofa has the problem of collapse after sitting for a long time. Although the sitting support 3 is reinforced by elastic bands in some sofa structures, the effect is still not ideal, and this defect still needs to be improved and overcome.

[0036] Based on this, this embodiment provides a sofa anti-collapse support structure (hereinafter referred to as the support structure), please refer to Figure 2 The structure mainly includes a bottom frame 4, a support beam 5 and an elastic member 6. The bottom frame 4 is fixedly installed on the seat frame 1 and is located below the sitting support member 3. The support beam 5 is fixedly arranged on the bottom frame 4. The bottom frame 4 and the support beam 5 form a plane frame structure to bear the force. The elastic member 6 is arranged on the support beam 5 and abuts against the bottom of the sitting support member 3 to provide support for the bottom of the sitting support member 3.

[0037] Specifically, the bottom frame 4 can be installed on the seat frame 1 by using threaded fasteners, and in order to make the overall force of the structure balanced, the contour of the bottom frame 4 is adapted to the contour of the sofa seat frame 1. The common seat frame 1 is generally a square box structure; based on this, in this embodiment, the bottom frame 4 uses a rectangular frame structure as an example, and the bottom frame 4 is fixedly installed along the circumferential contour of the seat frame 1. Through this arrangement, the bottom frame 4 can evenly transfer the pressure it receives to the surroundings of the seat frame 1, the structure is not easily overloaded, and the force is more balanced.

[0038] In another optional embodiment, the outline of the bottom frame 4 can also be adjusted to a circular, polygonal or other irregular outlines according to the outline of the seat frame 1. The specific outline of the bottom frame 4 is not limited here. No matter what outline the bottom frame 4 adopts, it should be included in the scope covered by this feature of the bottom frame 4.

[0039] Continue to refer to Figure 2The support beam 5 serves to enhance the strength of the bottom frame 4. In this embodiment, the two ends of the support beam 5 are respectively fixedly connected to the seat frame 1 and span across the opposite sides of the bottom frame 4. Through this connection method, the support beam 5 and the bottom frame 4 can form a criss-cross planar frame structure, with uniform overall force and stable structure.

[0040] Further, refer to Figure 3 In this embodiment, the support beam 5 is in the form of a slat structure, which is relatively light and thin and can reduce the overall weight of the support structure, and the support beam 5 is located directly below the riding support member 3; in addition, the middle portion of the support beam 5 is raised upward compared to the two ends. Through this structural setting, the bending stress can be converted into compressive stress at the same time, and the structure is not easily deformed under long-term use.

[0041] For further information, please refer to Figure 3 , the elastic member 6 is fixedly mounted on the top of the support beam 5. In this embodiment, the elastic member 6 adopts a compression spring structure. The compression spring is placed vertically, one end of which is fixedly mounted on the top of the support beam 5, and the other end is in contact with the bottom of the serpentine spring to support the serpentine spring. Under the support of the elastic member 6, the force of the serpentine spring is shared, mechanical fatigue is reduced, plastic deformation is not easily generated, and the service life is optimized and improved. It should be noted that because the support beam 5 adopts a slat-like structure, at this time, the slat-like structure has sufficient installation positions, which is conducive to accommodating the installation of the elastic member 6 while providing stable support.

[0042] In another embodiment, the elastic member 6 may also be replaced by an elastic element such as a rubber member, an air cushion, etc. Any element that can achieve elastic support may be selected and should be included in the scope covered by the feature of the elastic member 6.

[0043] It should be noted that in order to further enhance the supporting effect of the supporting structure, on the one hand, the serpentine spring and the support beam 5 are arranged parallel to each other, and on the other hand, the elastic member 6 can be arranged in plurality, and the plurality of elastic members 6 are evenly arranged on the support beam 5. Through the above two settings, multi-point support of the serpentine spring can be achieved.

[0044] In addition, continue to combine Figure 2 and Figure 3 The interconnected support beams 5 and elastic members 6 can also be set as multiple groups. Multiple groups of interconnected support beams 5 and elastic members 6 can be evenly arranged on the bottom frame 4 and correspond one-to-one with multiple serpentine springs to achieve an overall supporting effect.

[0045] The implementation principle of this embodiment is as follows: The elastic member 6 can effectively absorb the pressure received by the seating support member 3, and the pressure is distributed via the elastic member 6 to the stable planar frame structure formed by the bottom frame 4 and the support beam 5. At this time, the mechanical fatigue accumulation of the seating support member 3 can be slowed down, making the seating support member 3 not easily plastically deformed, and being able to achieve rapid rebound, significantly optimizing and improving the support degree of the sofa product.

[0046] Embodiment Two:

[0047] Sofa products have a variety of different sizes due to different style designs, specifically reflected in different size specifications in dimensions such as length and width. At this time, a single-specification support structure still cannot well meet the installation requirements for multi-size compatibility. Based on this, on the basis of Embodiment One, for the features not explained in this embodiment, the explanations in Embodiment One are adopted and will not be elaborated here. The difference between this embodiment and Embodiment One is that the bottom frame 4 can be telescopically adjusted to adapt to the assembly requirements of sofa products with different specifications.

[0048] Please refer to Figure 4 , specifically, in this embodiment, the bottom frame 4 also has a rectangular frame structure. The bottom frame 4 is obtained by bending or welding square tubes, and the inside of the bottom frame 4 is hollow; further, the bottom frame 4 includes two relatively arranged and slidably connected half-frames 41. In this embodiment, the two half-frames 41 are symmetrically separated along the width direction of the bottom frame 4 to form a C-shaped profile, and both ends of the half-frame 41 are respectively penetrated with two openings.

[0049] Based on this, to enable the two half-frames 41 to slide relative to each other, a connecting rod 7 can be installed at the end of one of the half-frames 41. Among them, the end face profile and size of the connecting rod 7 are adapted to the opening profile at the end of the half-frame 41. One end of the connecting rod 7 is inserted and fixed at the end of one of the half-frames 41, and the other end is movably inserted into the other half-frame 41; at this time, under the guidance of the connecting rod 7, the two half-frames 41 can move closer to or away from each other along the length direction of the bottom frame 4 to achieve sliding fit, and during the sliding process, the overall size of the bottom frame 4 will also be lengthened or shortened.

[0050] It should be noted that the number of connecting rods 7 is two, which are respectively arranged on both sides of the half-frame 41. With the cooperation of the two connecting rods 7, the sliding action is more stable.

[0051] Continue to refer to Figure 4In the present embodiment, it should be noted that when the support beam 5 is installed, one end is fixedly installed on one side of one of the half frames 41, and the other end is fixedly installed on the other side of the half frame 41. At this time, the length direction of the support beam 5 is perpendicular to the telescopic direction of the two half frames 41. In the process of mutual telescoping of the two half frames 41, the support beam 5 is synchronously driven to move. During the displacement process, the length of the support beam 5 can remain unchanged. At this time, the number of serpentine springs actually required to be supported can be adapted by increasing or decreasing the support beam 5, which is flexible to use.

[0052] In other embodiments, the support beam 5 can even be fixedly installed on the connecting rod 7 to meet the demand for uniform support. In this case, the connecting rod 7 should also be regarded as a part of the half frame 41, and the solution of setting the support beam 5 on the connecting rod 7 should be included in the explanation of the concept of the support beam 5 being installed on the half frame 41.

[0053] Continue to refer to Figure 4 After the bottom frame 4 is fixedly installed on the seat frame 1, in order to ensure that the bottom frame 4 has good stability, the bottom frame 4 also includes a first locking member 8. In this embodiment, the first locking member 8 is a butterfly bolt, wherein a threaded hole is provided through the half frame 41, and the butterfly bolt is installed on the top corner piece 10 through the threaded hole. At this time, by twisting the butterfly bolt, the butterfly bolt presses the connecting rod 7 to fix the frame. In addition, in other embodiments, a clamping hole can also be provided through the connecting rod 7, and the first locking member 8 can be inserted into the clamping hole to achieve mutual clamping and limiting of the two, and the structural stability is significantly improved.

[0054] In other embodiments, the first locking component 8 can adopt elements such as pins and elastic locks. Any elements that can limit the mutual movement of the top corner piece 10 and the connecting rod 7 can be selected. No specific restrictions are made here. No matter what structure is adopted, it should be included in the scope interpretation of this feature of the first locking component 8.

[0055] The implementation principle of this embodiment is: by telescopically adjusting the bottom frame 4, with the cooperation of the telescopic support beam 5, the bottom frame 4 can be adapted to sofa products of various specifications. Compared with the support structure with fixed size in Example 1, the support structure in this embodiment has excellent universal performance.

[0056] Embodiment three:

[0057] On the basis of the second embodiment, the features not explained in the present embodiment are explained in the second embodiment and will not be described again. The difference between the present embodiment and the second embodiment is that the bottom frame 4 and the support beam 5 can be synchronously telescopically adjusted to adapt to more diverse assembly requirements.

[0058] Please refer to Figure 5The bottom frame 4 also includes two half frames 41 that slide against each other. The difference is that the half frames 41 are symmetrically separated along the length direction of the bottom frame 4 , and the two half frames 41 slide together along the width direction of the bottom frame 4 .

[0059] At the same time, the two ends of the support beam 5 are respectively fixedly installed on the two half frames 41, which is equivalent to the support beam 5 spanning the two half frames 41, rather than being installed on the same half frame 41; and the support beam 5 is retractable, and the retraction direction of the support beam 5 is consistent with the sliding direction of the two half frames 41. During the retraction and extension process of the bottom frame 4, the support beam 5 is retracted to adapt to the changed size requirements of the bottom frame 4.

[0060] Reference Figure 6 The supporting beam 5 mainly includes a first beam plate 51 and a second beam plate 52, wherein one end of the first beam plate 51 is fixedly installed on one of the half frames 41, and one end of the second beam plate 52 is fixedly installed on the other half frame 41. At this time, the other end of the first beam plate 51 and the other end of the second beam plate 52 are opposite to each other and slide together.

[0061] Furthermore, in order to achieve mutual sliding cooperation between the first beam plate 51 and the second beam plate 52, in the present embodiment, a sliding cooperation seat 53 is installed at one end of the second beam plate 52 close to the first beam plate 51, and a sliding groove is provided on the sliding cooperation seat 53. By sliding the end of the first beam plate 51 into the sliding groove, the mutual sliding connection between the first beam plate 51 and the second beam plate 52 is achieved; at this time, the sliding directions of the first beam plate 51 and the second beam plate 52 are parallel to the sliding directions of the half frame 41 and the half frame 41. When the bottom frame 4 is extended or retracted, the first beam plate 51 and the second beam plate 52 can slide with the bottom frame 4 to adapt to the changes in the size of the bottom frame 4, and the structure is flexible.

[0062] For further information, please refer to Figure 6 In order to improve the overall structural stability of the support beam 5, the support beam 5 also includes a second locking member 9. The second locking member 9 has a similar structure to the first locking member 8, and can be made of screws, butterfly bolts, latches, etc., without specific restrictions. In this embodiment, the second locking member 9 uses a screw as an example. When it is specifically set, first, a plurality of threaded holes spaced along the length direction can be opened on the first beam plate 51 and the second beam plate 52, respectively. During the process of mutual displacement and extension of the first beam plate 51 and the second beam plate 52, until the two threaded holes are adjusted to a state of mutual communication, in this state, the second locking member 9 is simultaneously threadedly connected to the two threaded holes, so that the two can be fixedly connected, so that the support beam 5 is not easily deviated, and the structural stability is improved.

[0063] It should be noted that, in order to improve the compactness of the structure, the second locking member 9 can fix the elastic member 6 together on the first beam plate 51 and the second beam plate 52; wherein, when the elastic member 6 is selected to be a plurality of compression springs, a plate member can be fixedly installed at the bottom end of the compression spring, and a through hole is set through the plate member, and the second locking member 9 can pass through the through hole and fix the plate member to the support beam 5. Such a setting can further improve the overall compactness of the structure, and the assembly is more convenient and efficient.

[0064] Furthermore, in this embodiment, when the two half frames 41 slide together along the width direction of the bottom frame 4, the half frames 41 themselves can be further telescopically optimized, so that a bottom frame 4 structure that can be synchronously telescoped along the two vertical directions of width and length can be obtained.

[0065] Specifically, look back Figure 5 The bottom frame 4 in this embodiment mainly includes four top corner pieces 10, which are arranged in a rectangular shape. The top corner pieces 10 include a first arm and a second arm whose ends are vertically connected; and each adjacent two top corner pieces are slidably connected by a connecting rod 7. Under the guidance of the connecting rod 7, the adjacent two top corner pieces 10 can be moved closer to or farther away from each other.

[0066] At this time, through the above-mentioned arrangement, each two adjacent top corner pieces 10 and the connecting rods between the two adjacent top corner pieces 10 form a half frame 41 with a U-shaped outline, and the two top corner pieces 10 can be close to or away from each other, and the bottom frame 4 can be adjusted in length; in other embodiments, the outline of the half frame 41 can also be replaced with a U-shaped outline, and the U-shaped outline can usually achieve the purpose of support. No specific limitation is made to the specific outline of the half frame 41.

[0067] Specifically, see Figure 5 There are two ways for each corner piece 41 to form a half frame 41:

[0068] ① The left front corner fitting 10, the left rear corner fitting 10, and the connecting rod between the left front corner fitting 10 and the left rear corner fitting 10 form a half frame 41, and the right front corner fitting 10, the right rear corner fitting 10, and the connecting rod between the right front corner fitting 10 and the right rear corner fitting 10 form another half frame 41;

[0069] At this time, when the two half frames 41 slide relative to each other left and right, each support beam 5 moves left and right with the corresponding half frame 41, but does not extend or retract;

[0070] ② The left front corner fitting 10, the right front corner fitting 10, and the connecting rod between the left front corner fitting 10 and the right front corner fitting 10 form a half frame 41, and the left rear corner fitting 10, the right rear corner fitting 10, and the connecting rod between the left rear corner fitting 10 and the right rear corner fitting 10 form another half frame 41;

[0071] At this time, when the two half frames 41 slide back and forth relative to each other, each support beam 5 expands and contracts back and forth as the two half frames 41 slide back and forth.

[0072] It should be noted that the top corner fittings 10 and the connecting rod 7 can also be replaced by a round tube structure, and sliding can also be achieved by plugging and pulling between the round tubes. In addition, in other embodiments, matching elements such as slide rails and slide grooves can be set between two adjacent top corner fittings 10 to provide mutual telescopic freedom of movement between the two adjacent top corner fittings 10. The specific sliding assembly method between the top corner fittings 10 is not limited here. No matter what structure is adopted, it should be included in the explanation of the sliding matching connection method.

[0073] The implementation principle of this embodiment is: if the half frame 41 is pulled, the two half frames 41 can slide against each other, and the bottom frame 4 can be extended and retracted along the width direction to achieve the purpose of changing the size of the bottom frame 4. At this time, the support beam 5 is extended and retracted synchronously to meet the support distance requirements.

[0074] In addition, the distance between the two top corner pieces 10 in the half frame 41 can be adjusted so that the bottom frame 4 can be displaced and extended along the length direction, and the adjustment angle can be more flexible and changeable.

[0075] With the help of the size-adjustable bottom frame 4 and the support beam 5, the support structure can be applied to sofa products of more different sizes, and can even meet the needs of some sofa products with retractable and deformable structures. The structure has wide application and good universal performance.

[0076] Embodiment 4:

[0077] This embodiment provides a sofa, referring to Figure 7 and Figure 8 The sofa includes a seat frame 1 and a seat cushion 2, and also includes the anti-collapse support structure mentioned in the first, second or third embodiment. In this embodiment, the anti-collapse support structure mentioned in the third embodiment is selected as an assembly example. The seat cushion 2 includes a seat pad 21 and a fabric layer 22. The arrangement and connection structure of the seat frame 1, the seat pad 21 and the fabric layer 22 are not described here. The bottom frame 4 is fixedly installed with a seat support 3 for supporting the seat pad 21. The support structure is also fixedly installed on the seat frame 1, and abuts against the bottom of the seat support 3 through the elastic member 6 to support the seat support 3.

[0078] Furthermore, in addition to the plastic deformation caused by the long-term accumulation of the sitting support 3, another factor causing the collapse of the sofa product is the insufficient rebound ability of the seat cotton 21. This is reflected in that, when the spring structure rebounds into place, the fabric layer 22 produces surface wrinkles due to the depression of the seat cotton 21, which will also affect the user experience.

[0079] Based on this, refer to Figure 8 A layer of rebound layer 23 is filled inside the seat cushion 2. Specifically, the rebound layer 23 is arranged in the seat pack cotton 21. The rebound layer 23 has a high rebound property and plays a role in supporting the seat pack cotton 21, so that the fabric layer 22 is not easy to wrinkle. Specifically, in this embodiment, the rebound layer 23 is a latex rebound layer 23. The latex rebound layer 23 has a good rebound effect and can provide good support for the seat pack cotton 21, so that the seat pack cotton 21 rebounds quickly.

[0080] In another embodiment, the latex rebound layer 23 may also adopt an elastic layer structure such as a high-rebound sponge layer, a coconut palm layer, and a 3D mesh layer. No matter what kind of support structure is adopted, the solution that can provide rebound support for the seat bag cotton 21 can be selected and should be included in the range of the feature of the rebound layer 23.

[0081] Furthermore, in order to better achieve the rebound effect, the seat bag cotton 21 can be divided into three areas in the height direction, namely the upper part, the middle part and the bottom part, and the above three areas can be filled with the rebound layer 23; usually, the closer the filling position is to the fabric layer 22, the more obvious the rebound effect is. Preferably, in this embodiment, the rebound layer 23 is arranged in the middle position of the seat bag cotton 21. On the one hand, compared with the bottom, the middle part is closer to the fabric layer 22, and the supporting effect is better; on the other hand, compared with the upper part, if the rebound layer 23 is arranged in the upper part, the thickness of the soft cotton layer in the upper part of the seat bag cotton 21 will be thinner, which will affect the sitting feeling. Therefore, in this embodiment, the rebound layer 23 is arranged in the middle part, which can meet both the rebound requirements and the comfort requirements of the human body, and the effect is remarkable.

[0082] The implementation principle of the embodiment of the present application is: when the user stands up, the rebound is first achieved through the rebound layer 23. At this time, the rebound layer 23 directly acts on the seat cushion 2 to increase the tension during the rebound process, and the wrinkles on the surface of the seat rebound quickly; at the same time, under the reinforced support of the supporting structure, the seat support 3 rebounds quickly, so that the seat is not easy to collapse after sitting for a long time. Under the above two-stage rebound action, a sofa product that can rebound quickly and is not easy to wrinkle and collapse is obtained.

[0083] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sofa anti-collapse support structure, characterized in that: include: Bottom frame (4); A support beam (5) fixedly disposed on the bottom frame (4); and an elastic member (6) fixedly arranged on the support beam (5) and used for supporting the bottom of the sitting support member (3).

2. The sofa anti-collapse support structure according to claim 1, characterized in that: The bottom frame (4) comprises two half frames (41) which are arranged opposite to each other and are slidably connected; The two ends of the support beam (5) are respectively connected to the two sides of any half frame (41), and the length direction of the support beam (5) is perpendicular to the sliding direction of the two half frames (41); Alternatively, the two ends of the support beam (5) are respectively arranged on the two half frames (41), the support beam (5) is telescopically arranged, and the telescopic direction of the support beam (5) is parallel to the sliding direction of the two half frames (41).

3. The sofa anti-collapse support structure according to claim 2, characterized in that: The bottom frame (4) comprises four top corner pieces (10), and each two adjacent top corner pieces (10) are slidably connected via a connecting rod; Each two adjacent top corner pieces (10) and the connecting rod between the two adjacent top corner pieces (10) form a half frame (41).

4. The sofa anti-collapse support structure according to claim 2, characterized in that: The bottom frame (4) also includes A first locking member (8) is arranged on any of the half frames (41) and is used to lock the two half frames (41) together and position them.

5. The sofa anti-collapse support structure according to claim 2, characterized in that: When the two ends of the support beam (5) are respectively arranged on two half frames (41), the support beam (5) comprises: A first beam plate (51), one end of which is fixed to a half frame (41); A second beam plate (52) has one end fixed to the other half frame (41) and the other end slidably connected to the other end of the first beam plate (51); wherein the sliding directions of the first beam plate (51) and the second beam plate (52) are parallel to the sliding directions of the two half frames (41).

6. The sofa anti-collapse support structure according to claim 5, characterized in that: The support beam (5) further comprises: The second locking member (9) is respectively connected to the first beam plate (51) and the second beam plate (52) and is used to fix the first beam plate (51) and the second beam plate (52) to each other.

7. The sofa anti-collapse support structure according to claim 1, characterized in that: The middle portion of the support beam (5) is raised compared to the two ends.

8. The sofa anti-collapse support structure according to claim 1, characterized in that: The elastic member (6) comprises a plurality of compression springs, one end of which is fixedly arranged on the support beam (5), and the other end of which is used to support the seating support member (3).

9. A sofa, characterized in that: The sofa comprises a seat frame (1), a seating support (3) installed in the seat frame (1), a seating cushion (2) located above the seating support (3), and a sofa anti-collapse support structure according to any one of claims 1 to 8 located below the seating support (3).

10. The sofa according to claim 9, characterized in that: The upper part, the middle part or the bottom part of the seating cushion (2) is filled with a rebound layer (23).

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