A load-bearing sofa

Abstract

The utility model relates to life furniture technical field, specifically disclose a load-bearing sofa, include: sofa bottom frame, the sofa bottom frame includes the frame assembly that forms the containment cavity of enclosure, and the several support foot mounting plate that straddles the containment cavity and connects the both sides of frame assembly's side, several support feet, each support foot is installed in each support foot mounting plate's bottom, elastic support assembly, elastic support assembly is installed and fixed in the top of support foot mounting plate is used for providing the support of sitting to human body. The load-bearing sofa provided by the utility model can effectively solve the problem that the existing sofa is prone to causing the support foot to loosen due to the large deadweight.

Description

Technical Field

[0001] This utility model relates to the field of living furniture technology, and in particular to a load-bearing sofa. Background Technology

[0002] To support the sofa and maintain its stability, the traditional method involves installing triangular metal plates on the inside of the top corner of the bottom of the sofa's base frame, and then fixing the sofa's support legs to these triangular metal plates. This method of installing support legs has the following problems:

[0003] (1) Uneven force distribution and stress concentration: The two right-angled sides of the triangular iron plate are fixed to the inner wall of the top corner of the sofa bottom frame. When the support leg applies force upward, the force will be concentrated at the fixing point of the two right-angled sides (such as nails or screws). Due to the lack of support on the suspended side of the triangular iron plate, long-term stress will cause the main frame to crack at the fixing point, eventually leading to the screws coming loose.

[0004] (2) Unilateral stress, easy to deform: The triangular iron piece is fixed only by two right-angled sides, and the force of the supporting foot will cause it to have a torsional effect, causing the fixed point of the triangular iron piece to bear additional shear force, accelerating the connection failure.

[0005] Traditional sofas typically have a wooden frame filled with lightweight cushioning materials like foam, resulting in a relatively light overall weight. Triangular iron supports were common in early sofa designs and adequately met basic usage needs.

[0006] However, as consumers' functional needs for sofas have diversified, modern sofas have gradually incorporated complex features such as extension, folding, and storage. The realization of these functions often relies on additional metal linkage assemblies, motor drive mechanisms, or other mechanical structures, resulting in a significant increase in the overall weight of the sofa. This amplifies the shortcomings of the triangular iron support system, leading to the problem of support legs loosening in many heavy functional sofas after a short period of use.

[0007] This invention aims to improve existing sofas to solve the problem that their support legs are prone to loosening due to their heavy weight.

[0008] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0009] One objective of this invention is to provide a load-bearing sofa that effectively solves the problem that the support legs of existing sofas are prone to loosening due to their heavy weight.

[0010] To achieve the above objectives, this utility model provides a load-bearing sofa, comprising:

[0011] A sofa base frame, the sofa base frame including a frame assembly that encloses and forms a receiving cavity, and a plurality of support mounting plates that span the receiving cavity and connect the two sides of the frame assembly;

[0012] A plurality of support legs, each of the support legs being mounted on the bottom of the respective support leg mounting plate;

[0013] An elastic support assembly is installed and fixed to the top of the support leg mounting plate to provide sitting support for the human body.

[0014] Optionally, one of the support foot mounting plates is located at the rear end of the frame assembly, serving as a rear support foot mounting plate;

[0015] The rear support mounting plate includes two rear protruding ends that extend to the bottom of the frame assembly to support the rear end of the frame assembly, and a rear crossbeam connecting the two rear protruding ends.

[0016] Optionally, the rear crossbeam is provided with rear mounting holes for mounting support feet.

[0017] Optionally, one of the support leg mounting plates is located in the middle of the frame assembly, serving as a middle support leg mounting plate;

[0018] The front of the middle support leg mounting plate is provided with a storage and clearance cavity;

[0019] The elastic support component has an unfolded state that protrudes to the outside of the sofa bottom frame, and a folded state that is housed in the receiving cavity;

[0020] When the elastic support component is in the unfolded state and / or the folded state, the elastic support component is partially located in the storage clearance cavity.

[0021] Optionally, the middle support mounting plate has a U-shaped structure, which encloses and forms the storage and avoidance cavity with the opening facing forward.

[0022] Optionally, the center support mounting plate includes two extension plates extending from back to front, and a center crossbeam connecting the rear ends of the two extension plates.

[0023] The extension plate has a front mounting hole at its front end for mounting and fixing support feet.

[0024] Optionally, the front end of the extension plate is provided to extend to the bottom of the front end of the frame assembly to support the front protruding end of the frame assembly.

[0025] Optionally, the rear end of the extension plate is provided to extend to the middle bottom of the frame assembly to support the middle protruding end of the frame assembly.

[0026] Optionally, an alignment groove is provided between the front protruding end and the middle protruding end; the bottom of the frame assembly is provided with an alignment boss that engages in the alignment groove.

[0027] Optionally, the elastic support assembly has a three-fold structure, including a serpentine spring seating section, a sofa front panel, a lower leg support plate, and a linkage assembly;

[0028] The linkage assembly is mounted on each of the support leg mounting plates and connects the serpentine spring seating part, the front panel of the sofa, and the lower leg support plate to achieve the switching between the unfolded state and the folded state.

[0029] The beneficial effects of this utility model are as follows: It provides a load-bearing sofa in which the elastic support component is directly installed on the top of the leg mounting plate, while the support leg is directly fixed to the bottom of the leg mounting plate, thereby establishing a vertical and direct force transmission path. This design allows the weight of the human body to be directly transmitted to the leg mounting plate through the elastic support component, and then directly transmitted to the support leg from the leg mounting plate, completely bypassing the weak triangular iron plate connection point in the traditional structure.

[0030] Therefore, the load-bearing sofa provided by this utility model can effectively solve the problem that the support legs of existing sofas are prone to loosening due to their large weight. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A structural schematic diagram of a load-bearing sofa provided for an embodiment;

[0033] Figure 2 A schematic diagram of the bottom structure of a load-bearing sofa provided for an embodiment;

[0034] Figure 3 This is a structural diagram of the load-bearing sofa in its unfolded state, provided as an example.

[0035] Figure 4 A bottom schematic diagram of the load-bearing sand in its stacked state, provided for an embodiment;

[0036] Figure 5 This is a top view of the load-bearing sand in its stacked state, as provided in the embodiment.

[0037] In the picture:

[0038] 1. Sofa base frame; 101. Frame assembly; 1011. Alignment boss; 102. Center leg mounting plate; 1021. Extension plate; 1022. Center crossbeam; 1023. Front mounting hole; 1024. Front protruding end; 1025. Center protruding end; 103. Storage clearance cavity; 104. Rear leg mounting plate; 1041. Rear protruding end; 1042. Rear crossbeam; 1043. Rear mounting hole;

[0039] 2. Elastic support assembly; 201. Snake spring seating section; 202. Sofa front panel; 203. Lower leg support plate; 204. Linkage assembly;

[0040] 3. Support feet. Detailed Implementation

[0041] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0042] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0043] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0044] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0045] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0046] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0047] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0048] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0049] This utility model provides a load-bearing sofa that fundamentally solves the problem of traditional sofa support legs easily coming loose by redesigning the sofa's load-bearing structure.

[0050] See Figure 1 and Figure 2 In this embodiment, the load-bearing sofa includes:

[0051] The sofa base frame 1 includes a frame assembly 101 that encloses and forms an accommodating cavity, and a plurality of support mounting plates that span the accommodating cavity and connect the two sides of the frame assembly 101.

[0052] A plurality of support legs 3, each of the support legs 3 being mounted on the bottom of the respective support leg mounting plate;

[0053] Elastic support component 2 is installed and fixed on the top of the support leg mounting plate to provide sitting support for the human body.

[0054] Traditional sofas rely on triangular iron plates to fix the support legs 3 to the top corners of the wooden frame. This structure concentrates the force at a few fixed points, easily leading to frame cracking and connection failure. The innovation of this invention lies in directly mounting the elastic support component 2 on the top of the leg mounting plate, while the support legs 3 are directly fixed to the bottom of the leg mounting plate, thus establishing a vertical and direct force transmission path. This design allows the body weight to be directly transferred to the leg mounting plate through the elastic support component 2, and then directly to the support legs 3, completely bypassing the weak triangular iron plate connection points in the traditional structure.

[0055] Therefore, the load-bearing sofa provided by this utility model can effectively solve the problem that the support legs 3 of existing sofas are prone to loosening due to their large weight.

[0056] Furthermore, the leg mounting plate, as the core load-bearing frame, spans the entire accommodating cavity and can independently bear the entire weight, while the frame assembly 101 only serves an enclosure and decorative function, no longer participating in the main load-bearing. This structure ensures that unless the leg mounting plate or the support leg 3 itself undergoes severe deformation or breakage, the entire sofa frame will not sag or loosen. Through this direct and efficient force transmission method, the stress concentration and shear force problems common in traditional structures are effectively avoided, making it particularly suitable for multifunctional sofas with high load-bearing requirements, significantly improving the structural stability and service life of the sofa.

[0057] In this embodiment, one of the support mounting plates is located in the middle of the frame assembly 101, serving as the middle support mounting plate 102;

[0058] The middle support mounting plate 102 is provided with a storage and clearance cavity 103 in front;

[0059] The elastic support component 2 has an extended state that protrudes to the outside of the sofa base frame 1 (e.g., Figure 3 As shown), and having a folded state housed within the accommodating cavity (as shown). Figure 4 and Figure 5(as shown)

[0060] When the elastic support component 2 is in the unfolded state and / or the folded state, the elastic support component 2 is partially located in the storage and avoidance cavity 103.

[0061] The storage clearance cavity 103 at the front of the central support mounting plate 102 resolves the contradiction between the movement space of mechanical components and structural strength in functional sofas. This design allows the elastic support component 2 to be partially embedded in the cavity when folded, maintaining a flat appearance while ensuring a complete force transmission path when unfolded. It is particularly suitable for transformable furniture such as sofa beds with telescopic functions.

[0062] Optionally, the center support mounting plate 102 includes two extension plates 1021 extending from rear to front, and a central crossbeam 1022 connecting the rear ends of the two extension plates 1021; the center support mounting plate 102 has an overall U-shaped structure, forming a forward-opening storage and clearance cavity 103. The front end of each extension plate 1021 has a front mounting hole 1023 for mounting and fixing the support leg 3.

[0063] Optionally, in this embodiment, the elastic support component 2 has a three-fold structure, including a serpentine spring seating part 201, a sofa front panel 202, a lower leg support plate 203, and a connecting rod assembly 204.

[0064] The linkage assembly 204 is mounted on each of the support leg mounting plates and connects the serpentine spring seating part 201, the sofa front end plate 202, and the lower leg support plate 203 to realize the switching between the unfolded state and the folded state.

[0065] In some other embodiments, the elastic support component 2 may also be a two-fold structure, omitting the lower leg support plate 203 that is retracted into the storage and avoidance cavity 103.

[0066] It should be noted that different unfolding and folding forms require different structural forms of connecting rod assemblies 204. However, in this utility model, the specific structure of the elastic support component 2 and the realization of the unfolding and folding forms are not the focus, so the specific structure of the connecting rod assembly 204 will not be described in detail.

[0067] The key point of this invention is that, in order to smoothly switch between the unfolded and folded forms of the linkage assembly 204, a storage clearance cavity 103 must be set at the front end of the sofa. This means that the middle support leg mounting plate 102 can only be installed at the middle position of the sofa. If the support leg 3 is directly installed at the middle, the front end of the sofa will easily sink due to lack of support, causing the rear end of the sofa to tilt upwards. To avoid the problem of insufficient support at the front end of the sofa, the middle support leg mounting plate 102 is designed as a U-shaped structure. The extension plate 1021 extending from back to front provides support for the front support leg 3. After the front support leg 3 is installed and fixed on the front end of the extension plate 1021, the front-to-back support stability of the load-bearing sofa can be ensured at the same time while taking into account the clearance requirements of the linkage assembly 204.

[0068] Furthermore, the front end of the extension plate 1021 protrudes to the bottom front end of the frame assembly 101 to support the front protruding end 1024 of the frame assembly 101. The rear end of the extension plate 1021 protrudes to the middle bottom of the frame assembly 101 to support the middle protruding end 1025 of the frame assembly 101. An alignment groove is provided between the front protruding end 1024 and the middle protruding end 1025; the bottom of the frame assembly 101 is provided with an alignment boss 1011 that engages with the alignment groove.

[0069] The forward extension design of the extension plate 1021 moves the front support point forward to form a cantilever support structure, which, together with the rear middle crossbeam 1022, forms a span support. At this time, since the front mounting hole 1023 is located at the front end of the extension plate 1021, in order to avoid insufficient downward pressure on the front end of the extension plate 1021 and easy upward lifting by the support foot 3, a front protruding end 1024 and a middle protruding end 1025 are provided. The front protruding end 1024 and the middle protruding end 1025 can not only support the frame assembly 101 upward, but also use the gravity of the frame assembly 101 to press down the extension plate 1021, preventing the extension plate 1021 from being lifted upward.

[0070] Accordingly, one of the support foot mounting plates is located at the rear end of the frame assembly 101, serving as a rear support foot mounting plate 104; the rear support foot mounting plate 104 includes two rear protruding ends 1041 extending to the bottom of the frame assembly 101 to support the rear end of the frame assembly 101, and a rear crossbeam portion 1042 connecting the two rear protruding ends 1041. The rear crossbeam portion 1042 is provided with a rear mounting hole 1043 for mounting the support foot 3.

[0071] The two rear protruding ends 1041 of the rear support foot mounting plate 104 extend to the bottom of the frame assembly 101, and together with the front protruding end 1024 and the middle protruding end 1025, they support the frame assembly 101 upwards. This design evenly distributes the load of the frame assembly 101 onto each protruding part, and each protruding part lifts the frame assembly 101 upwards, avoiding the problem of connection failure due to excessive shearing force when the frame assembly 101 is fixed to the side of the triangular iron plate with screws.

[0072] Optionally, the support foot 3 can be a support column or a caster wheel. The multi-option design of the support foot 3 (column / caster wheel) gives the product adaptability to different scenarios: when using a column, a higher (more than 15cm) ground clearance can be achieved, which is suitable for scenarios that require bottom cleaning; when using caster wheels, the reinforced structure on the mounting plate can meet the movement needs of heavy sofas such as those used in medical care.

[0073] In summary, the load-bearing sofa provided in this embodiment has the following advantages:

[0074] ① Vertical force transmission path: The elastic support component 2 and the support foot 3 are directly connected through the support mounting plate to form a vertical force transmission path, avoiding the stress concentration problem at the connection point of the traditional triangular iron plate and improving the structural stability.

[0075] ② Shear force resistance design: The support mounting plate is directly fixed to the support leg 3, avoiding the shear force problem of traditional structures, which is especially suitable for high load-bearing scenarios.

[0076] ③ Storage and clearance cavity 103 design: The U-shaped structure of the middle support mounting plate 102 forms the front storage and clearance cavity 103, which takes into account both the folding space of the elastic support component 2 and the structural strength, and is suitable for multi-functional convertible sofas.

[0077] ④ Cantilever support optimization: The front end of the extension plate 1021 is provided with a front protruding end 1024 and a middle protruding end 1025. The weight of the frame is used to press down to prevent the support foot 3 from being lifted up, thus ensuring the stability of the front support.

[0078] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A load-bearing sofa, characterized in that, include: The sofa base frame (1) includes a frame assembly (101) that encloses and forms a receiving cavity, and a plurality of support mounting plates that span the receiving cavity and connect the two sides of the frame assembly (101). A plurality of support feet (3), each of the support feet (3) being mounted on the bottom of each of the support foot mounting plates; Elastic support component (2), which is installed and fixed on the top of the support plate, is used to provide sitting support for the human body.

2. The load-bearing sofa according to claim 1, characterized in that, One of the said support foot mounting plates is located at the rear end of the frame assembly (101) and serves as a rear support foot mounting plate (104). The rear support mounting plate (104) includes two rear protruding ends (1041) extending to the bottom of the frame assembly (101) to support the rear end of the frame assembly (101), and a rear crossbeam portion (1042) connecting the two rear protruding ends (1041).

3. The load-bearing sofa according to claim 2, characterized in that, The rear crossbeam (1042) is provided with a rear mounting hole (1043) for mounting the support foot (3).

4. The load-bearing sofa according to claim 1, characterized in that, One of the support mounting plates is located in the middle of the frame assembly (101) and serves as the middle support mounting plate (102). The middle support mounting plate (102) is provided with a storage and clearance cavity (103) in front. The elastic support component (2) has an unfolded state that protrudes to the outside of the sofa bottom frame (1) and a folded state that is housed in the accommodating cavity; When the elastic support component (2) is in the unfolded state and / or the folded state, the elastic support component (2) is partially located in the storage clearance cavity (103).

5. The load-bearing sofa according to claim 4, characterized in that, The middle support mounting plate (102) has a U-shaped structure, which encloses and forms the storage and avoidance cavity (103) with the opening facing forward.

6. The load-bearing sofa according to claim 5, characterized in that, The central support mounting plate (102) includes two extension plates (1021) extending from back to front, and a central crossbeam (1022) connecting the rear ends of the two extension plates (1021). The extension plate (1021) has a front mounting hole (1023) at its front end for mounting and fixing the support foot (3).

7. The load-bearing sofa according to claim 6, characterized in that, The front end of the extension plate (1021) is provided to extend to the bottom of the front end of the frame assembly (101) to support the front protruding end (1024) of the frame assembly (101).

8. The load-bearing sofa according to claim 7, characterized in that, The rear end of the extension plate (1021) is provided to extend to the middle bottom of the frame assembly (101) to support the middle protruding end (1025) of the frame assembly (101).

9. The load-bearing sofa according to claim 8, characterized in that, A matching groove is provided between the front protruding end (1024) and the middle protruding end (1025); the bottom of the frame assembly (101) is provided with a matching boss (1011) that fits into the matching groove.

10. The load-bearing sofa according to claim 4, characterized in that, The elastic support component (2) has a three-fold structure, including a serpentine spring seating part (201), a sofa front panel (202), a leg support plate (203), and a linkage assembly (204). The linkage assembly (204) is mounted on each of the support legs mounting plates and connects the serpentine spring seating part (201), the sofa front end plate (202), and the lower leg support plate (203) to realize the switching between the unfolded state and the folded state.

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