A sofa with a visible internal support structure

Abstract

The utility model discloses a sofa of visual inner support structure relates to furniture technical field, including bottom frame and integrated backplate. This sofa of visual inner support structure bottom frame adopts the transparent design of PC material quality, not only direct show internal support structure, promote product technology transparency and aesthetic value, still utilize the high strength and impact resistance of PC material, ensure that the structure is firm and durable, the wedge interlocking design of isosceles trapezoidal convex rod and recess, through the self -lock principle and enhance the anti -lateral displacement ability of horizontal support beam, cooperate horizontal support beam and the mortise -and -tenon joint of longitudinal support beam, form cross grid support system, effectively disperse stress and restrain deformation, prolong the service life of sofa, the combination of four groups of lifting support leg and rubber pad, realize height adjustment and antiskid damping function, prolong the service life, whole design gives consideration to mechanics stability, functional flexibility and visual display, satisfy the double demand of quality and aesthetics to modern house.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a sofa with a visible internal support structure. Background Technology

[0002] A sofa is a common type of furniture, mainly used for sitting and resting. It is usually composed of a frame, filling, and fabric, and is widely used in various places such as homes, offices, and commercial spaces. The sofa frame is the basic supporting part, generally made of sturdy materials such as wood and metal. Like the skeleton of the human body, it determines the overall shape and load-bearing capacity of the sofa. The filling affects the comfort of the sofa, and common fillings include sponge, down, and latex. The multi-layer sponge structure used in the patent takes into account both support and comfort. The fabric is the "outer garment" of the sofa, including leather and cloth, which not only serves an aesthetic purpose but also affects the feel and durability.

[0003] However, existing sofas with supporting structures still have some problems:

[0004] For example, a sofa support structure with application number CN201822184807.1 includes a frame support structure and a panel support structure, wherein the panel support structure is located inside the frame structure and is rigidly connected to the frame support structure.

[0005] The existing sofas with support structures mostly adopt a closed design for their internal support frame. Users cannot directly observe the internal materials and workmanship, which can easily lead to a lack of trust in the product's durability and environmental friendliness. It is also difficult to detect potential structural deformation or loosening caused by long-term use. Moreover, the closed structure makes the internal assembly process complicated, and it needs to be disassembled into a large number of parts during transportation, which increases logistics costs and installation difficulty for users.

[0006] Therefore, we propose a sofa with a visible internal support structure to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this utility model is to provide a sofa with a visible internal support structure, in order to solve the problem that the internal support frame of sofas with support structures mentioned in the background art is mostly closed, which makes it impossible for users to intuitively observe the internal materials and workmanship, which easily leads to a lack of trust in the durability and environmental protection of the product, and makes it difficult to detect the potential structural deformation or loosening caused by long-term use. Moreover, the closed structure makes the internal assembly process cumbersome, and it needs to be disassembled into a large number of parts during transportation, which increases logistics costs and installation difficulty for users.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sofa with a visible internal support structure, comprising a bottom frame and an integrated back panel.

[0009] An integrated back panel is provided on the top of the bottom frame, and a sofa cushion is embedded in the middle of the integrated back panel. Four sets of lifting legs are installed at the bottom corners of the bottom frame, and rubber pads are bolted to the bottom ends of the four sets of lifting legs. Three sets of transverse support beams are provided inside the bottom frame, and four sets of longitudinal support beams are snapped into the middle of the three sets of transverse support beams. Protruding rods are integrated at both ends of the three sets of transverse support beams. Grooves corresponding to the protruding rods are opened on the inner side wall of the bottom frame. Positioning holes are opened on the upper end face of the bottom frame, and pins corresponding to the positioning holes are installed at the bottom of the integrated back panel.

[0010] Using the above technical solution, the sofa achieves efficient assembly through a modular snap-fit ​​structure of the bottom frame and integrated back panel. The internal transverse and longitudinal support beams interlock to form a visible grid support system, which combines mechanical strength and process transparency. Four sets of lifting legs can adjust the height and balance of the sofa, and rubber pads enhance the anti-slip and shock absorption effect. While meeting the load-bearing requirements, it also achieves convenient disassembly and assembly and functional flexibility.

[0011] Preferably, the bottom frame is made of a transparent, visible structure made of PC material.

[0012] The above technical solution uses PC material for the bottom frame, and the transparent design directly exposes the internal support structure. By utilizing the high light transmittance and impact resistance of PC material, the structure is visualized while ensuring load-bearing capacity. Users can intuitively observe the material, connection process and stress state of the internal support beams, which enhances product trust. The transparent frame also has an aesthetic display function, which is in line with the demand for industrial design in modern homes, and at the same time, it is convenient to quickly check the structural integrity during daily cleaning and maintenance.

[0013] Preferably, the sofa cushion has a double-layer structure, with the upper layer being a leather structure filled with memory foam and the lower layer being a high-strength bamboo fiberboard structure.

[0014] Using the above technical solution, the sofa cushion adopts a double-layer composite structure. The upper layer uses memory foam as the core filling material, covered with leather to enhance durability and tactile comfort. The lower layer provides rigid support through high-strength bamboo fiberboard. Utilizing the bending strength and breathability of bamboo fiber, a mechanical system that combines flexibility and rigidity is formed. The memory foam layer disperses body pressure through its slow rebound characteristics, conforming to the sitting posture curve and relieving fatigue from prolonged sitting. The bamboo fiberboard layer provides stable support, preventing the cushion from collapsing and deforming, while its breathability accelerates moisture removal, avoiding stuffiness. The double-layer structure balances comfort and durability, extending the lifespan of the cushion and enhancing the user's intuitive perception of material quality.

[0015] Preferably, the outer surfaces of the three sets of transverse support beams are provided with four sets of first locking grooves, and the outer surfaces of the four sets of longitudinal support beams are provided with three sets of second locking grooves.

[0016] Using the above technical solution, the transverse support beam and the longitudinal support beam form a cross-fitting structure through the first and second snap-fit ​​grooves opened on the surface. The groove limit is used to achieve boltless fixation, reduce the visual interference of the connectors on the transparent frame, enhance the cross stability of the support beams, distribute the force and suppress structural deformation. At the same time, the exposed snap-fit ​​process enhances the visual design and intuitively shows the mechanical logic and material texture of the internal support system.

[0017] Preferably, the first locking groove of the transverse support beam and the second locking groove of the longitudinal support beam are connected by mortise and tenon joints.

[0018] Using the above technical solution, the first locking groove of the transverse support beam and the second locking groove of the longitudinal support beam are engaged by mortise and tenon structure. The precise matching of the grooves achieves vertical cross-fixation, which can transfer load without additional fasteners, enhance the shear resistance and overall rigidity of the support system, and suppress frame deformation. At the same time, the exposed mortise and tenon structure enhances the visual design, intuitively presents the combination of traditional craftsmanship and modern materials, and improves the product's craftsmanship value and structural transparency.

[0019] Preferably, the protruding rod is an isosceles trapezoidal structure, and the groove is adapted to the protruding rod and is correspondingly engaged.

[0020] The above technical solution employs an isosceles trapezoidal structure design for the protruding rod. The protruding rod and the groove on the inner sidewall of the bottom frame form a wedge-shaped engagement. Utilizing the inclined plane self-locking principle, it automatically locks under lateral force, enabling tool-free rapid assembly. The matching structure of the trapezoidal protruding rod and the groove enhances the lateral displacement resistance of the transverse support beam, improving the overall stability of the frame. At the same time, the seamless design at the engagement point reduces dust accumulation, meets the visualization requirements of the transparent frame, and balances structural strength with ease of cleaning and maintenance.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. The bottom frame features a transparent design made of PC material, which not only visually showcases the internal support structure, enhancing the product's craftsmanship and aesthetic value, but also utilizes the high strength and impact resistance of PC material to ensure structural stability and durability. The wedge-shaped interlocking design of the isosceles trapezoidal convex rods and grooves enhances the lateral displacement resistance of the transverse support beams through a self-locking principle. Combined with the mortise and tenon connections between the transverse and longitudinal support beams, a cross-grid support system is formed, effectively distributing stress and suppressing deformation, extending the sofa's lifespan. The combination of four sets of adjustable legs and rubber pads enables height adjustment and anti-slip shock absorption functions, further extending the sofa's lifespan. The overall design balances mechanical stability, functional flexibility, and visual appeal, meeting the dual demands of modern homes for quality and aesthetics, and improving product usability.

[0023] 2. The integrated back panel and bottom frame are precisely engaged with pins and positioning holes, enabling modular and rapid assembly, facilitating transportation and maintenance. The sofa cushions feature a double-layer structure: the upper layer, filled with memory foam and leather, conforms to the human body's curves, providing a comfortable feel and pressure distribution; the lower layer, made of high-strength bamboo fiberboard, enhances support and improves breathability, preventing stuffiness. The overall design balances mechanical stability, functional flexibility, and visual transparency, satisfying the dual demands of modern homes for quality and aesthetics while enhancing user trust in materials and craftsmanship through a visible structure, thus increasing product added value. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the external structure of this utility model from the front view;

[0025] Figure 2 This is a schematic diagram of the disassembled structure of the main body of this utility model;

[0026] Figure 3 This is a schematic diagram of the mortise and tenon connection structure of the support beam of this utility model;

[0027] Figure 4 This is a schematic diagram of the connection structure between the filter screen and the support rod of this utility model;

[0028] Figure 5 This is a schematic diagram of the connection structure between the integrated back panel and the bottom frame of this utility model.

[0029] In the diagram: 1. Bottom frame; 2. Integrated back panel; 3. Sofa seat cushion; 4. Adjustable support legs; 5. Rubber pad; 6. Horizontal support beam; 7. First snap-fit ​​groove; 8. Longitudinal support beam; 9. Second snap-fit ​​groove; 10. Protruding rod; 11. Groove; 12. Positioning hole; 13. Pin. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Please see Figures 1-5This utility model provides a technical solution: a sofa with a visible internal support structure, including a bottom frame 1 and an integrated back panel 2. The integrated back panel 2 is located on the top of the bottom frame 1, and a sofa cushion 3 is embedded in the middle of the integrated back panel 2. Four sets of lifting legs 4 are installed at the bottom corners of the bottom frame 1, and rubber pads 5 are bolted to the bottom ends of the four sets of lifting legs 4. Three sets of transverse support beams 6 are arranged inside the bottom frame 1, and four sets of longitudinal support beams 8 are engaged in the middle of the three sets of transverse support beams 6. Protruding rods 10 are integrated at both ends of the three sets of transverse support beams 6. Grooves 11 corresponding to the protruding rods 10 are opened on the inner side wall of the bottom frame 1. Positioning holes 12 are opened on the upper end face of the bottom frame 1, and pins 13 corresponding to the positioning holes 12 are installed at the bottom of the integrated back panel 2. The bottom frame 1 is made of PC material with a transparent and visible structure. The sofa cushion 3 has a double-layer structure, with the upper layer being a leather structure filled with memory foam and the lower layer being a high-strength bamboo fiberboard structure. The outer surfaces of the three sets of transverse support beams 6 are provided with four sets of first locking grooves 7, and the outer surfaces of the four sets of longitudinal support beams 8 are provided with three sets of second locking grooves 9. The first locking grooves 7 of the transverse support beams 6 and the second locking grooves 9 of the longitudinal support beams 8 are connected by tenon and mortise joints. The protruding rod 10 has an isosceles trapezoidal structure, and the groove 11 is adapted to the protruding rod 10 and is correspondingly locked in place.

[0032] The bottom frame 1 is made of transparent PC material, utilizing its high light transmittance and impact resistance to visually expose the internal structure while ensuring load-bearing capacity, thus enhancing the transparency of the craftsmanship and aesthetic value. The bottom frame 1 is adjusted for height and balance via four sets of lifting legs 4, and the rubber pads 5 at the bottom enhance anti-slip and shock absorption performance, ensuring the stability of the sofa during use. Inside the frame, three sets of transverse support beams 6 are embedded in corresponding grooves 11 on the inner wall of the bottom frame 1 with isosceles trapezoidal protrusions 10 at both ends, using the trapezoidal self-locking principle to achieve lateral limitation and stable connection. At the same time, the four sets of first interlocking grooves 7 in the middle of the three sets of transverse support beams 6 and the three sets of second interlocking grooves 9 on the outer surface of the four sets of longitudinal support beams 8 interlock with each other to form a cross-grid support. The system distributes stress and suppresses deformation, ensuring overall structural rigidity. While ensuring connection stability, it facilitates the installation and disassembly of the transverse support beam 6 and longitudinal support beam 8, improving ease of use. The integrated back panel 2 is precisely engaged with the positioning holes 12 on the upper surface of the bottom frame 1 via bottom pins 13, enabling rapid assembly and modular design. The sofa cushion 3 adopts a double-layer structure. The upper layer of leather filled with memory foam provides pressure distribution and a comfortable touch, while the lower layer of high-strength bamboo fiberboard enhances support and improves breathability, extending service life. The overall design takes into account mechanical stability, functional flexibility, and visual appeal, meeting the dual needs of modern homes for quality and aesthetics, and improving product efficiency.

[0033] Working Principle: For sofas with this type of visible internal support structure, the structure is made visible through the transparent PC material of the bottom frame 1. The three sets of transverse support beams 6 inside use isosceles trapezoidal protrusions 10 at both ends to wedge with the grooves 11 on the inner side wall of the bottom frame 1 to form a self-locking transverse limit. At the same time, the four sets of first locking grooves 7 in the middle of the transverse support beams 6 and the three sets of second locking grooves 9 on the outer surface of the four sets of longitudinal support beams 8 are interlocked with each other to construct a cross-grid support system, which distributes the force and suppresses deformation. The four sets of lifting legs 4 at the bottom corners of the bottom frame 1 are adjusted for height and balance by bolts, and the rubber pads 5 at the bottom end enhance the anti-slip and shock absorption performance. The integrated back panel 2 is modularly assembled by precise engagement of the bottom pins 13 with the positioning holes 12 on the upper surface of the bottom frame 1. All components work together to achieve a unity of mechanical stability, functional flexibility and visual transparency, meeting the dual requirements of modern furniture for quality and aesthetics, and improving product efficiency.

[0034] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sofa with a visible internal support structure, comprising a bottom frame (1) and an integrated back panel (2), characterized in that: An integrated back panel (2) is provided on the top of the bottom frame (1). A sofa cushion (3) is embedded in the middle of the integrated back panel (2). Four sets of lifting legs (4) are installed at the bottom corners of the bottom frame (1). The bottom ends of the four sets of lifting legs (4) are bolted to rubber pads (5). Three sets of transverse support beams (6) are provided inside the bottom frame (1). Four sets of longitudinal support beams (8) are snapped into the middle of the three sets of transverse support beams (6). The two ends of the three sets of transverse support beams (6) are integrally provided with protruding rods (10). The inner sidewall of the bottom frame (1) is provided with grooves (11) corresponding to the protruding rods (10). The upper end face of the bottom frame (1) is provided with positioning holes (12). The bottom of the integrated back panel (2) is provided with pins (13) corresponding to the positioning holes (12).

2. The sofa with a visible internal support structure according to claim 1, characterized in that: The bottom frame (1) is a transparent, visual structure made of PC material.

3. The sofa with a visible internal support structure according to claim 1, characterized in that: The sofa cushion (3) has a double-layer structure, with the upper layer being a leather structure filled with memory foam and the lower layer being a high-strength bamboo fiberboard structure.

4. A sofa with a visible internal support structure according to claim 1, characterized in that: The outer surfaces of the three sets of transverse support beams (6) are provided with four sets of first snap-fit ​​grooves (7), and the outer surfaces of the four sets of longitudinal support beams (8) are provided with three sets of second snap-fit ​​grooves (9).

5. A sofa with a visible internal support structure according to claim 4, characterized in that: The first locking groove (7) of the transverse support beam (6) and the second locking groove (9) of the longitudinal support beam (8) are connected by tenon and mortise joints.

6. A sofa with a visible internal support structure according to claim 1, characterized in that: The protruding rod (10) has an isosceles trapezoidal structure, and the groove (11) is adapted to the protruding rod (10) and is correspondingly engaged.

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