Combined covering structure and assembled sofa structure

Abstract

A combined covering structure and an assembled sofa structure. The combined covering structure comprises a plastic foaming main body (1) and a support frame (2), wherein the plastic foaming main body (1) is of a panel structure, and comprises an outer panel (11), an inner panel (12) arranged away from the outer panel (11), and a side wall (13) connecting the outer panel (11) and the inner panel (12); and the support frame (2) is connected to the inner panel (12), and the support frame (2) is at least partially embedded in the inner panel (12) in the direction of thickness, thereby forming a component where the plastic foaming main body (1) covers the support frame (2). By means of the design of this structural form, the overall thickness and volume of the combined covering structure are reduced, thereby reducing space occupation during transportation and reducing transportation costs; the strength and stability of the combined covering structure are enhanced by means of the support frame (2), and the overall weight can also be reduced; and the support frame (2) is hidden inside the plastic foaming main body (1), thereby improving the aesthetics, realizing protection for the internal support frame (2), and improving the durability.

Description

Combined covering structure and assembled sofa structure TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture, in particular to a combined covering structure and assembled sofa structure. BACKGROUND

[0002] Traditional sofas are usually constructed as an integral seat frame structure, or are equipped with soft upholstery cushions; when selling the product, the frame and cushion need to be directly delivered to the consumer or retail store; however, due to the large size of the furniture, the transportation and storage costs are high.

[0003] In the prior art, in order to reduce transportation costs, an assembled structure is used to reduce the volume of the sofa during transportation, for example, a sofa frame and assembled sofa are disclosed in Chinese Utility Model Patent No. CN215533068U, which was published on January 18, 2022, the sofa frame includes a backrest, a side plate connected to the backrest, and a face plate connected to the side plate, by setting the face plate as at least two folding blocks, the area occupied during transportation is further reduced.

[0004] However, although the above sofa adopts an assembled assembly method, since the components of the existing sofa are mostly in the form of completely covering the frame, even if disassembled and packaged, a large space is still occupied. SUMMARY

[0005] In view of at least one of the above technical problems, the present application provides a combined covering structure and assembled sofa structure, which uses structural improvements to further reduce transportation costs.

[0006] According to a first aspect of the present application, a combined covering structure is provided, comprising a plastic foamed body and a support frame;

[0007] The plastic foamed body is in the form of a face plate structure, comprising an outer face plate, an inner face plate arranged away from the outer face plate, and a side wall connecting the outer face plate and the inner face plate;

[0008] The support frame is connected to the inner face plate, and the support frame is at least partially embedded in the inner face plate in the thickness direction, forming a component in which the plastic foamed body covers the support frame.

[0009] In some embodiments of the present application, the load-bearing surface of the outer face plate is a curved surface structure.

[0010] In some embodiments of the present application, the inner face plate further has a reinforcing rib.

[0011] In some embodiments of the present application, the inner face plate is concave, and the reinforcing rib is protruding from the inner face plate.

[0012] In some embodiments of the present application, the reinforcing ribs are arranged in parallel or intersected.

[0013] In some embodiments of the present application, functional structures are formed on the inner panel and / or reinforcing ribs, or between the reinforcing ribs.

[0014] In some embodiments of the present application, the functional structures are positioning grooves of the support frame, which match at least partially with the shape of the support frame.

[0015] In some embodiments of the present application, the functional structures include connecting members for mounting or splicing of the support frame.

[0016] In some embodiments of the present application, the functional structures are mounting grooves for mounting or placing of accessories.

[0017] In some embodiments of the present application, the material of the support frame is at least one of metal, wood or composite material.

[0018] In some embodiments of the present application, the support frame is made of a rod, a plate or a combination of the two.

[0019] In some embodiments of the present application, the plastic foamed body and the support frame are connected by means of integral forming or splicing forming.

[0020] In some embodiments of the present application, the support frame further has a positioning structure matched with the plastic foamed body, which is integrally formed on the support frame or externally provided on the support frame and / or the plastic foamed body.

[0021] In some embodiments of the present application, the support frame and the plastic foamed body are connected by means of a connecting member, partial mutual covering, clamping or adhesion.

[0022] According to a second aspect of the present application, there is further provided a spliced sofa structure, comprising a bearing frame structure, the bearing frame structure comprising a hip support member, a back support member connected with the hip support member and an armrest member arranged on both sides of the hip support member; wherein at least the armrest member adopts the combined covering structure as any one of the first aspect.

[0023] In some embodiments of the present application, the bearing frame structure is detachably connected.

[0024] In some embodiments of the present application, the hip support member is further connected with a leg support member, and the angle between the leg support member and the back support member is adjustably arranged.

[0025] In some embodiments of the present application, an electric angle drive for driving the angle adjustment of the leg support member and / or the back support member is further included.

[0026] The application has the advantages that: the connection structure of the plastic foaming main body and the support frame is provided, so that the overall thickness and volume of the combined covering structure are reduced, thereby reducing the space occupation in the transportation process and reducing the transportation cost; and through the above structure design, the strength and stability of the combined covering structure can be enhanced with the help of the support frame, and the overall weight can be reduced; in addition, the support frame is hidden inside the plastic foaming main body, which improves the appearance and protects the internal support frame, thereby improving the durability. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0028] Fig. 1 is a schematic diagram of the outer side surface of the combined covering structure in the embodiment of the present application;

[0029] Fig. 2 is a schematic diagram of the inner side surface of the combined covering structure in the embodiment of the present application;

[0030] Fig. 3 is a flow chart of the preparation method of the plastic foaming main body in the embodiment of the present application;

[0031] Fig. 4 is a schematic diagram of the exploded structure of the combined panel in the embodiment of the present application;

[0032] Fig. 5 is a schematic diagram of the thickness of the combined panel before and after installation in the embodiment of the present application;

[0033] Fig. 6 is a schematic diagram of the plastic foaming main body with different hardnesses on the inner and outer sides in the embodiment of the present application;

[0034] Fig. 7 is a side view of the combined covering structure in the embodiment of the present application;

[0035] Fig. 8 is a schematic diagram of the inner side surface of the plastic foaming main body in the embodiment of the present application;

[0036] Fig. 9 is a sectional view of A-A in Fig. 8 in the embodiment of the present application;

[0037] Fig. 10 is a partial enlarged view of B in Fig. 8 in the embodiment of the present application;

[0038] Fig. 11 is a schematic view of another arrangement of the reinforcing rib in the embodiment of the present application;

[0039] Fig. 12 is a partial enlarged view of C in Fig. 8 in the embodiment of the present application;

[0040] Fig. 13 is a schematic view of another structure of the plastic foamed body in the embodiment of the present application;

[0041] Fig. 14 is a partial enlarged view of D in Fig. 13 in the embodiment of the present application;

[0042] Fig. 15 is a schematic view of a structure of a connecting member in the embodiment of the present application;

[0043] Fig. 16 is a schematic view of the thickness of the assembled panel before and after installation in the embodiment of the present application;

[0044] Fig. 17 is a schematic view of a structure of a support frame in the embodiment of the present application;

[0045] Fig. 18 is a schematic view of a structure of a support frame using multiple materials in the embodiment of the present application;

[0046] Fig. 19 is a sectional view of a combined structure form when the structural unit of the support frame is a plate body in the embodiment of the present application;

[0047] Fig. 20 is a schematic view of a structure of a support frame when the structural unit of the support frame is a combination of a plate body and a rod body in the embodiment of the present application;

[0048] Fig. 21 is a schematic view of a connecting structure when the support frame and the plastic foamed body both adopt a spliced structure in the embodiment of the present application;

[0049] Fig. 22 is a schematic view of a positioning and fixing structure of the support frame and the plastic foamed body in the embodiment of the present application;

[0050] Fig. 23 is a schematic view of a partial cladding connecting structure of the support frame and the plastic foamed body in the embodiment of the present application;

[0051] Fig. 24 is a schematic view of a structure of a spliced sofa structure in the embodiment of the present application;

[0052] Fig. 25 is an exploded schematic view of a structure of a spliced sofa structure in the embodiment of the present application;

[0053] Fig. 26 is a schematic view of a packaging and transportation structure of a spliced sofa structure in the embodiment of the present application. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0055] It is to be understood that where an element is referred to as being "on" another element, it can be directly on the element or intervening elements can also be present. Where an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar terms as used herein are for the purpose of description only and are not intended to limit the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "including", "comprising", "having" and the like are meant to encompass the items listed thereafter as well as other items.

[0057] The combined cover structure shown in FIGS. 1-2 includes a plastic foamed body 1 and a supporting frame 2; in the embodiments of the present application, the material of the plastic foamed body can be polyurethane foam, polyethylene foam, polypropylene foam, ethylene-vinyl acetate copolymer foam or expanded polypropylene material, etc. In the embodiments of the present application, the expanded polypropylene material is taken as an example. The expanded polypropylene material, also known as EPP, is a high-performance plastic material, mainly having the characteristics of lightweight, high elasticity, impact resistance, heat resistance, low-temperature resistance, environmental protection and comfort. Due to its very light weight, the sofa made of expanded polypropylene material is easier to move and install, and at the same time, the pressure on the ground is reduced, which is suitable for various ground adjustments. In addition, the expanded polypropylene material has good elasticity and impact absorption performance, and has excellent elasticity and support, so that when used as a decorative panel for a sofa, it can ensure sufficient impact resistance and stability, and when used as a supporting part of the human body, it can provide a good sitting feeling and help to reduce the fatigue caused by long-term sitting posture.

[0058] In the embodiments of the present application, as shown in FIGS. 1 and 2, the plastic foamed body 1 has a panel structure, including an outer panel 11, an inner panel 12 arranged away from the outer panel 11, and a side wall 13 connecting the outer panel 11 and the inner panel 12; in the embodiments of the present application, the plastic foamed body 1 has a certain thickness, but is thinner than the thickness of the traditional sofa panel at the same use position. The outer panel 11 here refers to the surface facing outward after assembly into a sofa, and the inner panel 12 is used for connection of internal structure, etc. The inner panel 12 is away from the outer panel 11, which means that the inner panel 12 is arranged inside the outer panel 11. It should be noted here that the inner panel 12 and the outer panel 11 can be integrally arranged, i.e. the outer side is the outer panel 11 and the inner side is the inner panel 12, or can be a structure with a cavity or other filler 22c in the middle.

[0059] As shown in FIG. 3, it is a process step flow chart of the forming process of the plastic foamed body 1 in the embodiment of the present application, mainly including the following processes:

[0060] Mixing, first mix the polypropylene particles, foaming agent and other additives at high temperature to form, the specific component formula can be set according to the requirement of the material, for example, if you want to increase the softness of the plastic foamed body 1, you can increase the polypropylene raw material and reduce the use of foaming agent; If you want to improve the hardness of the plastic foamed body 1, you can increase the proportion of foaming agent or add reinforcing agent, which can be glass fiber or other reinforcing materials to improve its hardness;

[0061] Extrusion, the mixed raw materials are heated and extruded by the extruder, in this process, the foaming agent will release gas at high temperature to form foam structure, the extruded foam material usually presents in the form of continuous strip;

[0062] Foaming, the extruded foam material is cut into the required shape and foamed under certain temperature conditions, so that the foam structure is more stable and the volume is further expanded;

[0063] Mold forming, the foamed foam material is put into the mold to be further formed by heating and pressing, which can be made into different sizes and shapes according to the needs, such as the design of the mold shape according to the various components of the sofa.

[0064] Cooling and finishing, the plastic foamed body 1 after forming is cooled and finished to ensure that the final product meets the design requirements and has good performance.

[0065] Of course, it should be pointed out here that the plastic foamed body 1 can be realized by one-time forming, if you want to get different softness of the inner panel 12 and the outer panel 11, as shown in FIG. 6, the outer panel 11 of the plastic foamed body 1 in the embodiment of the present application is softer and the inner panel 12 is harder, this structure can adopt the method of multiple molding, for example, the foam material of the inner panel 12 with larger hardness can be prepared to prepare the inner panel 12 part, and the foam material of the outer panel 11 with relatively soft can be prepared to prepare the outer panel 11 part, finally, the two are heated and pressed in the mold to be integrated, forming the structure of the relatively soft outer panel 11 and the side wall 13 covering the inner panel 12.

[0066] Please refer to FIG. 2 and FIG. 4, in the embodiment of the present application, the support frame 2 is connected to the inner panel 12. In the embodiment of the present application, the structural strength of the support frame 2 is greater than that of the plastic foamed body 1, which plays a role of structural reinforcement and connection; as for the connection mode of the support frame 2 and the inner panel 12, there are various forms, which will be described in detail in the following embodiments of the present application. In the embodiment of the present application, as shown in FIG. 4, in order to further reduce the overall thickness of the combined covering structure, the support frame 2 is at least partially embedded into the inner panel 12 in the thickness direction, forming a component of the plastic foamed body 1 covering the support frame 2. Please refer to FIG. 5, before the support frame 2 and the plastic foamed body 1 are installed, the total thickness of the two is T0, after the support frame 2 is connected with the plastic foamed body 1, the total thickness of the combined covering structure is T1, due to the use of embedded installation, T1 is less than T0, through the design of this kind of structure form, the overall thickness and volume of the combined covering structure are reduced, so as to reduce the space occupation in the transportation process, and reduce the transportation cost; and through the above structure design, the strength and stability of the combined covering structure can be enhanced by means of the support frame 2, and the overall weight can also be reduced, in addition, the support frame 2 can be hidden inside the plastic foamed body 1, avoiding the support frame 2 exposed outside, which not only improves the appearance but also realizes the protection of the internal support frame 2, thereby improving the durability, and at the same time, it can also avoid the direct contact between the support frame 2 and the human body, which can cause injury to the user.

[0067] In some embodiments of the present application, as shown in FIG. 7, the force bearing surface of the outer panel 11 is a curved surface structure 110. It should be noted here that in embodiments of the present application, the force bearing surface can be the main panel of the outer panel 11, by setting the main panel as a curved surface structure, the use of materials can be reduced, the overall weight can be reduced, and lightweight design can be facilitated; in addition, in embodiments of the present application, the force bearing surface can also be the transition surface of the outer panel 11 and the side wall 13, that is, at the edges and corners of the outer panel 11, by setting the curved surface structure 110 at this position, the structural strength and rigidity can be improved, and the stress can be dispersed, thereby effectively dispersing and buffering the impact force from the outside, reducing direct damage to the outer panel 11, and improving overall durability. In some embodiments of the present application, referring to FIG. 6, the curved surface structure 110 can be designed on the middle part of the main panel and the transition surface with the side wall 13, by this kind of structure design, comfort, beauty and easy cleaning and maintenance can also be increased, since the curved surface design is more in line with ergonomics, when used to support the human body, better support and comfort can be provided, by the design of the curved surface, the gap between the panels can be reduced, the accumulation of bacteria and dirt can be reduced, and the curved surface design is more convenient for cleaning and wiping. Of course, it should be noted here that in embodiments of the present application, the curved surface structure 110 is not limited to the arc form in FIG. 6, and those skilled in the art can also set the curved surface structure to other structure forms such as streamline type and the like which can increase comfort and practicality.

[0068] Optionally, as shown in FIGS. 8 and 9, in some embodiments of the present application, the inner panel 12 also has a reinforcing rib 12a. By setting the reinforcing rib 12a, the reinforcing strength and rigidity of the panel can be improved; it should be noted here that the forming method of the reinforcing rib 12a in embodiments of the present application has many kinds, which can be integrally formed, or can be installed and connected after the plastic foaming body 1 is formed. Specifically, when the integrally formed way is adopted, the model of the reinforcing rib 12a can be directly integrated in the mold of the plastic foaming body 1, then the plastic foaming body 1 and the reinforcing rib 12a material can be placed in the mold at the same time during the forming process, so that the reinforcing rib 12a is formed at the same time as the plastic foaming body 1. The material of the reinforcing rib 12a can be the same as that of the plastic foaming body 1, or can use different materials, such as metal or hard plastic, etc., when the plastic foaming body 1 is formed, welding, bonding, fastener connection or buckle and the like can be used to realize the fixation of the reinforcing rib 12a and the inner panel 12.

[0069] In the embodiment of the present application, referring to FIG. 9, in order to further reduce the weight and ensure the structural strength, the inner panel 12 in the embodiment of the present application is concave, and the reinforcing rib 12a is protruded from the inner panel 12. In one aspect, the concave inner panel 12 can reduce the thickness of the plastic foaming body 1, and can also correspond to the arc surface of the outer panel 11, thereby reducing the weight and also playing a supporting function. In the embodiment of the present application, the protruding direction of the reinforcing rib 12a is shown in FIG. 9, and the reinforcing rib 12a is protruded towards the direction perpendicular to the inner panel 12, thereby playing a stronger supporting effect on the concave inner panel 12, improving the carrying capacity and anti-deformation capacity of the plastic foaming body 1, so that the plastic foaming body 1 can bear greater load without being easily damaged. In the embodiment of the present application, when the combined covering structure is used as a sofa armrest, the concave inner panel 12 generally faces the user, and through this design, a greater space can be provided for the user, a more comfortable supporting and wrapping feeling can be provided, and in addition, more design space is also provided through this concave design.

[0070] As shown in FIG. 10 and FIG. 11, regarding the specific structural form of the reinforcing rib 12a, the reinforcing rib 12a is arranged in parallel or in cross. The parallel arrangement here can be a transverse arrangement, can be a longitudinal arrangement as shown in FIG. 11, or can be arranged in an oblique direction as needed in some embodiments of the present application. In embodiments of the present application, the cross arrangement also has various structural forms, for example, it can be arranged in a mesh-like oblique cross, or can be arranged in a vertical cross as shown in FIG. 10, or in some embodiments of the present application, it can also be arranged in a frame-like structure to achieve structural reinforcement. These different structural forms have their own advantages, for example, the transverse and longitudinal reinforcing ribs 12a can effectively improve the bending and compression resistance of the plastic foamed body 1, the mesh-like reinforcing rib 12a can provide better elastic support while enhancing the strength, and the frame design combines the stability of traditional furniture and the lightness of modern materials. In addition, it should be pointed out here that in some embodiments of the present application, the thickness of the reinforcing rib 12a can be set as needed, as shown in FIG. 11, in the inner panel 12 arranged in a concave manner, the outer surface of a single reinforcing rib 12a is on the same straight line, and at the part in contact with the inner panel 12, the thickness of the reinforcing rib 12a is different with the degree of concave of the inner panel 12, for example, at the part near the center of the inner panel 12, the degree of concave is larger, and the thickness of the reinforcing rib 12a at this part is larger to provide more stable support, and at the edge, the curvature of the inner panel 12 is smaller, and the thickness of the reinforcing rib 12a at this time is also thinner. In addition, please refer to FIG. 9, in embodiments of the present application, by setting different thickness and shape of the reinforcing rib 12a, the structural strength and material saving can be considered, and more functional structures 120 can also be provided, in the following part of the embodiments of the present application, some examples of the functional structures 120 will be introduced, but it should not be considered as a limitation of the present application.

[0071] In some embodiments of the present application, as shown in FIGS. 12-15, the functional structure 120 can be directly provided on the inner panel 12, can be directly provided on the reinforcing rib 12a, can be formed between the inner panel 12 and the reinforcing rib 12a, or can be provided between adjacent reinforcing ribs 12a. Through the provision of the functional structure 120, various functions and utilities can be added to the structure of the sofa. The design of the functional structure 120 can improve the assembly efficiency of the product, the structural stability, and can increase the mounting options of the accessories. In embodiments of the present application, the functional structure 120 has various forms, for example, can be a positioning pin or a groove, by directly providing the positioning pin and the groove on the inner panel 12 or on the reinforcing rib 12a, the support frame 2 can be precisely positioned and fixed. In embodiments of the present application, the same material as the expanded polypropylene or a more solid material is usually used; or can also be a plug-in hole and a buckle, for quick installation of accessories, through such a provision, quick disassembly, replacement or upgrading of sofa parts, etc. can be allowed, and the functional structure is exemplarily described below.

[0072] In some embodiments of the present application, as shown in FIG. 12, the functional structure 120 is a positioning groove 121 for positioning the support frame 2, which matches at least a partial shape of the support frame 2. In embodiments of the present application, the positioning groove 121 can be formed by foaming expansion of a polypropylene material when the plastic foaming body 1 is formed in a mold, and the protruding part in the mold is the forming position of the positioning groove 121. In addition, the positioning groove 121 can also be formed by mechanical processing, for example, a CNC machining center first removes excess material by rough machining to form a basic groove, and then fine machining is performed to ensure that the size and depth of the positioning groove 121 meet the design requirements. In addition, in embodiments of the present application, the positioning groove 121 can also be directly arranged on the reinforcing rib 12a. By arranging in this way, additional mechanical support and stability can be provided. Compared with the way of directly opening the positioning groove 121 on the inner panel 12, the way of integrating the positioning groove 121 with the reinforcing rib 12a can enhance the overall durability and carrying capacity. As shown in FIG. 12, in embodiments of the present application, the positioning groove 121 structure can also be formed by the layout of adjacent reinforcing ribs 12a, for example, the positioning groove 121 structure with a width suitable for the support body in the support frame 2 can be formed between two adjacent reinforcing ribs 12a by changing the thickness. It should be pointed out here that in embodiments of the present application, the positioning groove 121 can be a structure as shown in FIG. 4, which completely matches the shape of the support frame 2; or it can be a multi-segment arrangement at the inflection points and stress points of the support frame 2 as shown in FIG. 12. By arranging the positioning groove 121, the installation of the support frame 2 can be facilitated, and the effect of reinforcing the plastic foaming body can also be achieved. Of course, the shape of the positioning groove 121 is not limited, which can be a straight line type groove with both sides open as shown in FIG. 12, or an arc-shaped positioning groove 121 at the inflection point, or a three-way type, or a cross type, etc. In embodiments of the present application, the positioning groove 121 can also be used for the installation of the support frame 2, for example, a protrusion corresponding to the positioning groove 121 can be arranged on the support frame 2, and a screw for clamping or screwing cooperation with the support frame 2 is arranged in the positioning groove 121, so as to realize the quick positioning and fixing of the support frame 2.

[0073] In some embodiments of the present application, please continue to refer to Figure 14, the functional structure 120 comprises a connecting member 122 for supporting the installation or splicing of the support frame 2. The connecting member 122 here can be a clamping combination member 122a as shown in Figure 14, can be a fastening member 122b detachably connected to the reinforcing rib 12a, or can be a press buckle member 122c cooperating with the fastening member 122b. In embodiments of the present application, as shown in Figure 14, the clamping combination member 122a has two oppositely arranged clamping arms, the support frame 2 is clamped between the two clamping arms, and has clamping teeth arranged at intervals in the direction of the two clamping arms towards each other, so that the components on the support frame 2 are tightly clamped between the two clamping arms without relative movement, and has a positioning column or slot arranged protrudingly at the position between the two clamping arms, when the installation of the support frame 2 is specifically carried out, the support frame 2 has a hole position corresponding to the positioning column, and further, the further fixation of the support frame 2 can be realized by means of nuts or screws; this kind of structure is also applicable to the splicing between two support frames 2, for example, two press combination members are arranged at the joint of the support frame 2, which can improve the splicing reliability of the support frame 2. Please continue to refer to Figure 14, the structure of the fastening member 122b is relatively simple, a threaded hole can be formed on the reinforcing rib 12a, or a nut is pre-buried to form a structure corresponding to the hole position on the support frame 2, so that the installation or splicing of the support frame 2 is realized by using bolts; in addition, the installation or splicing of the support frame 2 can also be completed by pre-buried bolts. In embodiments of the present application, the structure of the press buckle member 122c also has various forms, which can form a cap-shaped socket structure as shown in Figure 15 between the reinforcing ribs 12a, and cooperate with the pre-buried nut to realize the installation or splicing fixation of the support frame 2 inserted into the press buckle member 122c. Of course, the skilled in the art can also set other buckle type or embedded type functional structures 120 according to the needs to realize the installation or modular splicing of the support frame 2, so as to improve the flexibility and practicability of the combined covering structure.

[0074] In some embodiments of the present application, as shown in FIG. 16, the functional structure 120 can also be a mounting groove 123 for mounting or placing accessories. The mounting groove 123 here can be directly integrated on the reinforcing rib 12a or formed between adjacent reinforcing ribs 12a, and the accessories here can be the operation panel of the electric sofa as shown in FIG. 16, and the adjustment of the reclining angle of the electric sofa is realized by fixing the operation panel 123a in the mounting groove 123; of course, it should be pointed out here that the mounting groove 123 can also be formed by directly molding on the inner panel 12, or formed by later processing, and when fixing the operation panel 123a, the operation panel 123a can be fixed by bonding, clamping or screwing through the structure of the stepped mounting groove. Of course, it should be pointed out here that in addition to the operation panel 123a, it can also be various wiring channels and the like; in addition, in the embodiments of the present application, the above-mentioned mounting groove 123 can also be in the form of a cup holder, a storage groove, etc.

[0075] In the embodiments of the present application, the material of the support frame 2 is at least one of metal, wood or composite material. When designing the support frame 2, various materials can be used to meet different requirements and design specifications. In some embodiments of the present application, for example, steel or aluminum alloy material can be used, which has high strength and durability. The steel can be selected from stainless steel rectangular pipes, and the aluminum alloy can be selected from aluminum alloy profiles. The hollow pipe material can reduce the overall weight while ensuring good structural stability. When the metal material support frame 2 is formed, the metal plate can be first pressed into the required pipe shape by stamping, or directly processed by pipe material. Specifically, the pipe can be formed into a specific radius by a pipe bending machine, and then connected by welding or fastener connection to form a frame structure. Wood has good processing performance and can be connected by mortise and tenon structure with glue. It is light in weight and easy to combine with expanded polypropylene while providing sufficient support. When processing, woodworking tools or existing CNC machines can be used for cutting and polishing, and finally the processed wood parts are assembled into the structure of the support frame 2 by screws, nails or adhesives. Composite materials have various forms, such as glass fiber reinforced plastic, carbon fiber composite material and other polymer materials, etc. The forming method of the composite material has various forms, such as hand lay-up, pultrusion, and laminating, etc. The person skilled in the art can select according to actual needs. Of course, two or more materials can also be combined to take advantage of different materials. For example, aluminum alloy and glass fiber reinforced plastic can be combined as shown in Figures 17 and 18. The aluminum alloy forms the main frame structure, and the glass fiber reinforced plastic can be fixed by embedding or wrapping at the connection nodes of the aluminum alloy, the stress concentration parts or the places where additional rigidity is needed, so as to combine the strength of the aluminum alloy and the rigidity of the glass fiber reinforced plastic, thereby improving the mechanical properties of the overall structure. Alternatively, a combination of steel and carbon fiber reinforced plastic can be used, or a combination of natural fiber composite material and polymer matrix can also be used, etc. Here, further description is omitted.

[0076] In some embodiments of the present application, the support frame 2 is made of a rod body 21, a plate body 22 or a combination of the two. As shown in FIG. 17, for the support frame 2 structure made of a rod body 21, the structure form of the above-mentioned aluminum alloy or stainless steel rectangular tube can be specifically selected, which has a hollow structure in cross section; it is recorded that the bending part can be formed by bending through a pipe bender; when assembling, it can be connected through insertion, welding or screws and other fasteners; as for the connection form with the plastic foaming body 1, it has been described in detail in the above, and those skilled in the art can refer to the above for understanding. In some embodiments of the present application, it can also be integrally formed by a composite material under hot die pressing. Wood can also be used for processing and forming by sawing, polishing and gluing. When specifically connected with the plastic foaming body 1, plug-in connection, buckle connection or welding and bonding structure can be commonly used to achieve. The support frame 2 made of a rod body 21 can provide high strength and rigidity, and processing can adopt bending, extrusion, welding and other ways, which can manufacture more complex structure shape. In some embodiments of the present application, the support frame 2 made of a plate body 22 can provide a larger support area and uniform stress; its specific structure can be realized by bending or laminating of the plate body 22, as shown in FIG. 19, which is a combined cross-sectional structure diagram of a plate body 22 and a plate body 22 in embodiments of the present application, including a horizontal plate 22a and a U-shaped plate 22b connected with the horizontal plate 22a. This kind of structure can be realized by welding of metal plate or gluing of composite material, of course, it can also be realized by connecting member 122, as shown in FIG. 19, those skilled in the art can also add filler 22c in the cavity of the U-shaped plate 22b to further improve the structural reliability of the support frame 2. In addition, as shown in FIG. 20, in embodiments of the present application, the combination of rod body 21 and plate body 22 can also be used to realize the forming of support frame 2; this kind of structure combines the structural strength of rod body 21 and the support advantage of plate body 22, so as to realize the best balance between strength, rigidity, weight and cost. Moreover, it can also combine the connection advantages of plate body 22 and rod body 21 to improve the connection reliability with the plastic foaming body 1. In addition, in embodiments of the present application, the plate body 22 or the rod body 21 can also be used to realize the splicing connection of the support frame 2, so as to realize the support effect on the larger area plastic foaming body 1.

[0077] In some embodiments of the present application, the connection form of the plastic foamed body 1 and the support frame 2 has multiple forms, and the plastic foamed body 1 and the support frame 2 are connected in an integrated or spliced manner. Specifically, a single support frame 2 can be fixed on one plastic foamed body 1; or a single support frame 2 can be used to fix multiple plastic foamed bodies 1, in which case the plastic foamed bodies 1 need to be spliced and connected; or a plastic foamed body 1 can be used to fix multiple support frames 2, in which case the support frames 2 can be spliced or combined to be regionally fixed; in the embodiments of the present application, if the area of the plastic foamed body 1 is large, multiple support frames 2 can be spliced and connected with multiple spliced expanded polypropylene panels. As shown in FIG. 21, in the embodiments of the present application, when the spliced plastic foamed body 1 is connected with the spliced support frame 2, the spliced parts are arranged in a staggered manner, and the support frame 2 can be a combination of a plate body 22 and a rod body 21, and the plate body 22 at the spliced part is ensured to be complete, so that the plate body 22 can reliably fix the spliced parts on both sides, thereby ensuring the overall structural strength of the spliced part.

[0078] In some embodiments of the present application, the support frame 2 also has a positioning structure cooperating with the plastic foamed body 1, which is integrally formed on the support frame 2 or externally provided on the support frame 2 and / or the plastic foamed body 1. In the above-mentioned embodiments of the present application, the positioning groove 121 formed on the reinforcing rib 12a or the inner panel 12 has been introduced as the functional structure 120; in the embodiments of the present application, in addition to the positioning groove 121 provided on the reinforcing rib 12a, a corresponding protrusion can be provided on the support frame 2, or a corresponding positioning protrusion is provided on the support frame 2 and a corresponding recess is provided on the plastic foamed body 1, so as to facilitate quick positioning when the support frame 2 and the plastic foamed body 1 are connected. In addition, in some embodiments of the present application, when the integrally formed technology of the support frame 2 and the plastic foamed body 1 is used, as shown in FIG. 22, an anchoring protrusion 21a can be provided on the side of the support frame 2 facing the plastic foamed body 1, and a corresponding anchoring recess 21b is provided on the corresponding side of the plastic foamed body 1, which are wrapped together after melting and then solidified after cooling to achieve fixed connection of the two; of course, the anchoring recess 21b can also be provided on the support frame 2, and through the above-mentioned structure, not only the positioning is achieved, but also the fixed connection of the support frame 2 and the plastic foamed body 1 is achieved. Similarly, when the split type installation is performed, the anchoring protrusion 21a can be deformed to achieve positioning of the support frame 2. Of course, the anchoring protrusion 21a can be changed to a prismatic shape to achieve the positioning function according to the actual needs of those skilled in the art. In addition, in the embodiments of the present application, the form of the positioning structure externally provided on the support frame 2 or the plastic foamed body 1 also has many forms, for example, it can be a plug structure, and the specific plug structure can be a socket fixed on the plastic foamed body 1 and a plug fixed on the support frame 2, or a plug fixed on the plastic foamed body 1 and a socket fixed on the support frame 2, etc.

[0079] In some embodiments of the present application, the connection between the support frame 2 and the plastic foamed body 1 is introduced in the above embodiments of the present application. In the embodiments of the present application, the connection between the support frame 2 and the plastic foamed body 1 is introduced. In some embodiments of the present application, the support frame 2 and the plastic foamed body 1 are connected by a connecting piece. The connecting piece can be a conventional connecting piece. For example, a nut can be pre-buried in the plastic foamed body 1, a bolt hole is provided on the support frame 2 for the bolt to pass through, and the support frame 2 and the plastic foamed body 1 are connected by the screw connection of the bolt and the nut. Of course, in the embodiments of the present application, the connecting piece can also be in the form of an expansion screw or the like, and a non-standard connecting structure matching the cross section of the constituent unit of the support frame 2 can also be provided to realize the connection between the two. In the embodiments of the present application, the connection can also be achieved by local mutual cladding. The local mutual cladding can be an embedded connection, that is, a groove corresponding to the support frame 2 is provided on the plastic foamed body 1, and the support frame 2 is embedded into the corresponding groove to fix the support frame 2. The local mutual cladding can also be hot melt welding, as shown in FIG. 23. The plastic foamed body 1 and the support frame 2 are partially melted by local heating, so that the plastic foamed body 1 and the support frame 2 are solidified together after cooling to realize the connection. Of course, the anchor protrusion 21a and the anchor recess 21b can also be used to realize the local cladding connection between the two as in the above embodiments. In the embodiments of the present application, the connection can also be achieved by clamping or bonding. The specific clamping can be to provide a clamping head on the support frame 2 and a clamping seat on the plastic foamed body 1, and to fix the support frame 2 on the plastic foamed body 1 by a plastic or metal fastener. In the embodiments of the present application, when the bonding method is used for connection, corresponding mortise and tenon structures can be provided, or the contact area can be increased to improve the reliability of the bonding.

[0080] According to another aspect of the present application, a sectional sofa structure as shown in FIG. 24 is also provided, which comprises a load-bearing frame structure, the load-bearing frame structure comprising a hip support member 30, a back support member 40 connected with the hip support member 30, and an armrest member 50 arranged on both sides of the hip support member 30; wherein at least the armrest member 50 adopts the above-mentioned combined cladding structure. In some embodiments of the present application, as shown in FIG. 24, the combined cladding structure can be used as a member of the load-bearing frame of the sectional sofa structure alone, for example, the armrest member 50 can be implemented in the form of the structure of the above-mentioned combined cladding structure. When specifically connected, as shown in FIG. 24, the outer panel 11 of the plastic foamed body 1 of the armrest member 50 faces the surface of the support frame 2 facing the hip support member 30, through such arrangement, not only can the connection of the armrest member 50 be facilitated, but also the functional members on the inner panel 12 of the plastic foamed body 1 such as the control panel 123a, the cup holder, the storage groove, etc. can be directed towards the user, providing more practicability. In addition, through such arrangement of the armrest member 50, since the armrest member 50 is independently installed, the diversification of sofa products can also be improved, that is, different colors, different patterns and shapes of armrests can be selected and assembled according to the requirements of customers, so as to meet the needs of customers. When specifically connecting the structure, the armrest member 50 can be fixed on both sides of the hip support member 30 to be used as an armrest alone, or the armrest member 50 can be extended to the bottom of the hip support member 30, and the support frame 2 connecting leg is connected at the bottom of the armrest member 50, such arrangement makes the armrest member 50 serve as a support part of the hip support member 30, and also serves as an armrest part for the arm after the human body sits on the sofa. As for the connection mode of the back support member 40 and the hip support member 30, both the fixed-angle connection mode and the adjustable-angle connection mode can be adopted, which will be described in detail in the following part of the embodiments of the present application. In addition, in the embodiments of the present application, the combined cladding structure can also be attached to the sofa member as a local structure, for example, it can be fixed to the back of the back support member 40 as shown in FIG. 24, so as to improve the aesthetic appearance and form a good protective effect on the back support member 40, avoiding damage to the back support member 40 during transportation and movement.

[0081] Optionally, as shown in FIG. 25, in the embodiments of the present application, the pressure-bearing frame structure is detachably connected. As shown in FIG. 25, in some embodiments of the present application, since the armrest member 50 also serves as a support for supporting the hip support member 30, only the hip support member 30 needs to be arranged in a frame structure, and when the connection is specifically performed, the armrest member 50 is connected and fixed on both sides of the hip support member 30, and then the back support member 40 is connected with the armrest member 50 or the hip support member 30; a bolt can be used for fastening, or a buckle or other connection mode can be used. As shown in FIG. 26, when the package is specifically disassembled, the two armrests can be oppositely arranged, so that the outer panel 11 faces outward, and the back support member 40 and the hip support member 30 are clamped between the two armrest members 50. Since the inner panel 12 of the two armrest members 50 is in a concave structure form in the embodiments of the present application, the two opposite armrest members 50 have a large accommodation capacity, the hip support member 30 and the back support member 40 can be clamped between the two armrest members 50, and then they are packed into the transport packaging box. Through the above arrangement, compared with the prior art, the occupied volume of the sofa during transportation is obviously reduced, thereby saving the transportation cost, and the plastic foaming body 1 on the armrest member 50 can further protect the internal sofa member.

[0082] In some embodiments of the present application, the leg support member 60 is also connected to the hip support member 30, and the angle between the leg support member 60 and the back support member 40 is adjustable. In embodiments of the present application, the leg support member 60 can also be shaped in the form of a combination plate as described above; when specifically connected, the leg support member 60 and the back support member 40 can be arranged in a rotatable connection with the hip support member 30, and through this rotatable connection, the folding form of the leg support member 60, the hip support member 30, and the back support member 40 can also be achieved; when specifically disassembled, only the armrest members 50 on both sides need to be removed from the hip support member 30, then the leg support member 60 is folded towards the hip support member 30, and then the back support member 40 is folded in the other direction towards the hip support member 30, so that the three are folded into the plate body 22 structure as much as possible, and then the two armrest members 50 are used to cover both sides of the three after folding, which can still form the transportation packaging structure form shown in FIG. 26. Of course, it needs to be pointed out here that in embodiments of the present application, the angle adjustment structure of the leg support member 60 and the back support member 40 has multiple forms, which can be manually adjusted or electrically adjusted. Specifically, a gear type adjustment structure can be used, for example, a toothed plate is arranged at the connection between the leg support member 60 and the back support member 40 and the hip support member 30, the gear can be locked at different angles, the user can adjust the position of the gear by rotating the handle or the button, and then change the angle of the leg and the back; in addition, a pull rod type adjustment structure can also be used, that is, a telescopic pull rod structure is arranged on the leg support member 60 and the back support member 40, a locking disc with a locking hole is fixed in the rotating area thereof, the leg support member and the back support member 40 are rotated to the appropriate locking hole by pulling the pull rod, so that the telescopic rod is inserted into the locking hole to fix the angle, etc.; in addition, a pneumatic adjustment mechanism can also be provided, for example, the leg support member 60 and the back support member 40 are connected to the hip support member 30 through a hinge, and then the action of the pneumatic cylinder, the control valve, and the button controller are controlled; in embodiments of the present application, as shown in FIGS. 13 and 16, the button for controlling the action of the pneumatic cylinder can be arranged inside the armrest member 50 to facilitate the user to adjust the angle of the leg support member 60 and the back support member 40 in a sitting position. Of course, it also needs to be pointed out here that the structure for adjusting the angle of the back support member 40 and the leg support member 60 also has multiple forms, and those skilled in the art can arrange the corresponding structure form according to the needs. In addition, in some embodiments of the present application, in order to limit the rotation angle of the leg support member 60 and the back support member 40, a limiting piece can also be arranged to realize the local rotation and fixation of the leg support member 60 and the back support member 40.

[0083] In some embodiments of the present application, the electric angle adjustment of the leg support member 60 and the back support member 40 can also be achieved by an electric angle drive, which in some embodiments of the present application can be an electric push rod, a motor screw nut seat or other structural forms; when the angle is adjusted, the leg support member 60 can be rotatably connected to the hip support member 30 and the back support member 40 can be rotatably connected to the hip support member 30 by a hinge structure; when the angle of the leg support member 60 and the back support member 40 is adjusted, it can be controlled separately, i.e. one electric push rod is used to adjust the angle of the leg support member 60 and the other electric push rod is used to adjust the angle of the back support member 40; or the structure can be driven simultaneously, i.e. one electric push rod is used to adjust the angle of the leg support member 60 and the back support member 40; conversely, when the electric push rod is retracted, the back support member 40 and the leg support member 60 can be reset. It should be noted that in the embodiments of the present application, the control panel 123a for controlling the action of the electric push rod can be arranged inside the armrest member 50, i.e. on the inner panel 12 of the plastic foaming body 1 in the embodiments of the present application. It should be noted that the above driving mode is only an example in the embodiments of the present application, and those skilled in the art can make conventional modifications based on the present application, but all fall within the scope of the present application. It should be noted that the transmission member can be disassembled during transportation and packaged as an accessory for transportation.

[0084] It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A combination covering structure, characterized by, The application is applied to a sofa component, which comprises a plastic foaming main body and a supporting frame. The plastic foaming main body is in a panel structure, which comprises an outer panel, an inner panel arranged away from the outer panel, and a side wall connecting the outer panel and the inner panel. The supporting frame is connected to the inner panel and at least partially embedded into the inner panel in the thickness direction, forming a component in which the plastic foaming main body covers the supporting frame.

2. The combination cover structure of claim 1, wherein The force bearing surface of the outer panel is in a curved surface structure.

3. The combination cover structure of claim 1, wherein The inner panel is further provided with reinforcing ribs.

4. The combination cover structure of claim 3, wherein The inner panel is concave, and the reinforcing ribs are convex on the inner panel.

5. The combination cover structure of claim 3 or 4, wherein The reinforcing ribs are arranged in parallel or intersected.

6. The combination cover structure of claim 3, wherein Functional structures are formed on the inner panel and / or the reinforcing ribs, or between the reinforcing ribs.

7. The combination cover structure of claim 6, wherein, The functional structures are positioning grooves of the supporting frame, which are matched with at least partial shapes of the supporting frame.

8. The combination cover structure of claim 6, wherein, The functional structures comprise connecting components for mounting or splicing the supporting frame.

9. The combination cover structure of claim 6, wherein, The functional structures are installation grooves for mounting or placing accessories.

10. The combination cover structure of claim 1, wherein The material of the supporting frame is at least one of metal material, wood or composite material.

11. The combination cover structure of claim 10, wherein, The supporting frame is made of a rod body, a plate body or a combination of the two.

12. The combination cover structure of claim 11, wherein, The plastic foaming main body and the supporting frame are connected by means of integral forming or splicing forming.

13. The combination cover structure of claim 12, wherein, The supporting frame is further provided with positioning structures matched with the plastic foaming main body, which are integrally formed on the supporting frame or externally arranged on the supporting frame and / or the plastic foaming main body.

14. The combination cover structure of claim 12, wherein, The supporting frame and the plastic foaming main body are connected by means of connecting components, partial mutual covering, clamping or bonding.

15. A knock-down sofa structure characterized in that, The application discloses a pressure bearing frame structure, which comprises a hip support component, a back support component connected with the hip support component, and armrest components arranged on both sides of the hip support component.

16. The sectional sofa structure according to claim 15, characterized in that The pressure bearing frame structure is detachably connected.

17. The sectional sofa structure of claim 15, wherein The hip support component is further connected with a leg support component, and the angle between the leg support component and the back support component is adjustably arranged.

18. The sectional sofa structure of claim 17, wherein, The application further discloses an electric angle driving component for driving the angle adjustment of the leg support component and / or the back support component.

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