Elastic assembly, elastic pad, sofa, and folding sofa bed

Abstract

An elastic assembly, comprising a bottom plate (11) and an elastic module. The elastic module comprises a plurality of elastic units (12); the bottom plate (11) is provided with first connection members (111) mating with the elastic units (12); and first connection mating members (121) mating with the first connection members (111) are arranged at the bottoms of the elastic units (12). A detachable connection relationship is formed between the bottom plate (11) and the elastic units (12) by means of the first connection members (111) and first connection mating members (121). Further provided is an elastic pad (1), comprising: the elastic assembly and a soft pad layer (13). The elastic module is arranged between the bottom plate (11) and the soft pad layer (13). The soft pad layer (13) is circumferentially provided with second connection members (131); and the bottom plate (11) is provided with second connection mating members (112) mating with the second connection members (131). A detachable connection relationship is formed between the bottom plate (11) and the soft pad layer (13) by means of the second connection members (131) and the second connection mating members (112), and a space for accommodating the elastic module is formed between the bottom plate (11) and the soft pad layer (13). Further provided are a sofa and a folding sofa bed, which respectively use the elastic pad (1).

Description

An elastic component, an elastic cushion, a sofa, and a folding sofa bed

[0001] Cross-reference of related applications

[0002] This application claims priority based on Chinese Patent Application No. 2025100701480, filed on January 16, 2025, entitled "An Elastic Component, Elastic Cushion, Sofa and Folding Sofa Bed", the contents of which are incorporated herein by reference.

[0003] This application claims priority based on Chinese Patent Application No. 2025119793658, filed on December 25, 2025, entitled "An Elastic Component, Elastic Cushion, Sofa and Folding Sofa Bed", the contents of which are incorporated herein by reference. Technical Field

[0004] This invention relates to a household product, and more particularly to a household product with elastic support. Background Technology

[0005] Traditional elastic pads have their functional layers enclosed together, making them difficult to assemble and disassemble due to their fixed size and cleaning challenges. Common improvements to address these issues include making the different functional layers of the elastic pad detachable and connectable, or dividing the elastic pad into multiple horizontally combinable modules, each containing multiple enclosed functional layers. However, these improvements still enclose multiple elastic units, and the ease of assembly and disassembly remains to be improved. Summary of the Invention

[0006] The main technical problem to be solved by the present invention is to provide an elastic component, a sofa and an elastic cushion, wherein the elastic unit and the base plate can be disassembled, and the base plate is used to support and fix the elastic unit.

[0007] To solve the above-mentioned technical problems, the present invention provides a sofa, comprising: a base plate, an elastic module, a fabric cover, a backrest support rod, and a backrest assembly;

[0008] The elastic module is disposed on the upper surface of the base plate, and the fabric cover is disposed on the outside of the elastic module and connected to the base plate; one end of the backrest support rod is connected to the base plate, and the other end extends away from the base plate;

[0009] The backrest assembly is provided with an opening through which the backrest support rod passes, and the backrest support rod provides support to the backrest assembly after passing through the opening;

[0010] The elastic module includes multiple elastic units. A first connector that mates with the elastic unit is provided on the base plate. A first connecting fitting that mates with the first connector is provided at the bottom of the elastic unit. The base plate and the elastic unit are detachably connected through the first connector and the first connecting fitting.

[0011] The present invention also provides a sofa, comprising: a sofa frame, an elastic module, and a fabric cover;

[0012] The sofa frame includes a base plate, a back plate, and a connecting rod connecting the base plate and the back plate; the elastic modules are respectively disposed on the base plate and the back plate; the fabric cover is disposed on the outside of the elastic modules and is respectively connected to the base plate and the back plate;

[0013] The elastic module includes multiple elastic units. A first connector that mates with the elastic unit is provided on the base plate. A first connecting fitting that mates with the first connector is provided at the bottom of the elastic unit. The base plate and the elastic unit are detachably connected through the first connector and the first connecting fitting.

[0014] The present invention also provides a sofa, comprising: a frame, a bottom assembly, and a backrest assembly;

[0015] The bottom component and the backrest component each include an elastic module and a fabric cover. The fabric cover of the bottom component covers the side and top surface of the elastic module, and the elastic module of the bottom component is connected to the bottom plate of the frame.

[0016] The frame also includes a backrest support rod; the fabric cover of the backrest assembly is fitted over the elastic module and has an opening through which the backrest support rod passes, and the backrest support rod provides support to the backrest assembly after passing through the opening.

[0017] The elastic module includes multiple elastic units. A first connector that mates with the elastic unit is provided on the base plate. A first connecting fitting that mates with the first connector is provided at the bottom of the elastic unit. The base plate and the elastic unit are detachably connected through the first connector and the first connecting fitting.

[0018] In a preferred embodiment: the first connector and the first connecting mating member are plug-in mating.

[0019] In a preferred embodiment: the base plate is provided with a protruding base on the side facing the elastic unit, the base having an insertion cavity, and the first connecting member is a limiting rib provided on the inner wall of the insertion cavity;

[0020] The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a post corresponding to the insertion cavity as the first connecting and mating member; the side wall of the post extends radially outward to form a limiting wall that mates with the limiting rib.

[0021] In a preferred embodiment: the base plate is provided with an outwardly protruding base on the side facing the elastic unit, the base having an insertion cavity, the first connecting member being an insertion post disposed at the bottom of the insertion cavity and extending upward; the side wall of the insertion post extends outwardly along the radial direction with a limiting rib.

[0022] The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a plug corresponding to the insertion cavity as the first connecting and mating member; the end face of the plug is provided with a insertion hole for the insertion post to be inserted, and the inner wall of the insertion hole is provided with a limiting wall that cooperates with the limiting rib for limiting.

[0023] In a preferred embodiment: the first connector is a protrusion extending along the height direction, and the first connecting mating member is a slot.

[0024] In a preferred embodiment: the base plate is a grid-shaped base plate; a plurality of the first connectors are spaced apart on the surface ribs of the grid-shaped base plate.

[0025] In a preferred embodiment: the surface ribs protrude outward relative to the outer frame of the base plate or are in the same plane as the outer frame of the base plate.

[0026] In a preferred embodiment: the base plate is an integral base plate, and the upper surface of the integral base plate is provided with an array of the first connecting members.

[0027] In a preferred embodiment: the frame has a cavity for accommodating the base plate; the side of the base plate is provided with a step that abuts against the upper surface of the frame.

[0028] In a preferred embodiment: the base plate includes an elastic fabric layer and a clamping frame disposed circumferentially along the elastic fabric layer, the clamping frame being used to clamp and fix the elastic fabric layer.

[0029] In a preferred embodiment: the clamping frame includes a first frame and a second frame, and the elastic fabric layer is clamped between the first frame and the second frame.

[0030] In a preferred embodiment: the edge of the fabric cover is provided with a fabric cover fastener, which is connected and fixed to the first frame or the second frame.

[0031] In a preferred embodiment: the base plate includes an outer frame and a support rod placed inside the outer frame, and the support rod is provided with the first connector;

[0032] In a preferred embodiment: the edge of the fabric cover wraps around the snap-fit ​​roller, the lower surface of the outer frame extends inward in the horizontal direction along the thickness direction to form a protruding edge, the inner sidewall of the outer frame extends inward in the horizontal direction to form a snap-fit ​​block, and the snap-fit ​​block and the protruding edge are spaced apart along the thickness direction of the outer frame to form a snap-fit ​​groove that engages with the snap-fit ​​roller.

[0033] The present invention also provides an elastic component, including a base plate and an elastic module; the elastic module includes a plurality of elastic units, the base plate is provided with a first connector that cooperates with the elastic units, and the bottom of the elastic unit is provided with a first connecting fitting that cooperates with the first connector; the base plate and the elastic units form a detachable connection relationship through the first connector and the first connecting fitting.

[0034] In a preferred embodiment: the first connector and the first connecting mating member are screwed together.

[0035] In a preferred embodiment: the first connector includes a screw-in groove, and the first connecting fitting includes a screw-in portion connected to the elastic unit, wherein the screw-in groove and the screw-in portion are screw-fitted together;

[0036] Alternatively, the first connecting component may include a screw-in groove disposed in the elastic unit, and the first connecting component may include a screw-in portion connected to the base plate, wherein the screw-in groove and the screw-in portion are screwed together.

[0037] In a preferred embodiment: the screw-on portion includes a connecting portion and a limiting portion, the screw-on groove is provided with a first portion and a second portion, the connecting portion and the limiting portion can pass through the first portion, and when the connecting portion moves to the second portion, the limiting portion restricts the elastic unit and the base plate from separating.

[0038] In a preferred embodiment: the first connector further includes a base protruding from the base plate, the screw groove is disposed on the base, the first connecting fitting includes a cavity disposed at the bottom of the elastic unit, the screw part is located in the cavity, and the base is adapted to the cavity;

[0039] Alternatively, the first connecting component may further include a base protruding from the bottom of the elastic unit, a screw-in groove disposed on the base, the first connecting component including a cavity disposed on the base plate, the screw-in groove being opened within the cavity, the screw-in part being connected to the base, and the base being adapted to the cavity.

[0040] In a preferred embodiment: at least two screw grooves are provided; the plurality of screw grooves are distributed in a rotationally symmetrical manner around the axis of the base.

[0041] In a preferred embodiment: the base plate is provided with a base on the side facing the elastic unit, and the first connector includes at least one screw groove provided on the surface of the base for the first connector to be screwed on.

[0042] In a preferred embodiment: the bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a protrusion corresponding to the screw groove as the first connecting mating member; the screw groove is divided into a first part and a second part, the width of the first part is greater than the width of the protrusion, and the width of the second part is less than the width of the protrusion.

[0043] When the elastic unit rotates to the position corresponding to the protrusion and the first part, the elastic unit and the base are released from the limiting engagement along the thickness direction of the base; when the elastic unit rotates to the position corresponding to the protrusion and the second part, the elastic unit and the base are limited to the engagement along the thickness direction of the base.

[0044] In a preferred embodiment: the first connector and the first connecting mating member are plug-in mating.

[0045] In a preferred embodiment: the base plate is provided with a protruding base on the side facing the elastic unit, the base having an insertion cavity, and the first connecting member is a limiting rib provided on the inner wall of the insertion cavity;

[0046] The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a post corresponding to the insertion cavity as the first connecting and mating member; the side wall of the post extends radially outward to form a limiting wall that mates with the limiting rib.

[0047] In a preferred embodiment: the base plate is provided with an outwardly protruding base on the side facing the elastic unit, the base having an insertion cavity, the first connecting member being an insertion post disposed at the bottom of the insertion cavity and extending upward; the side wall of the insertion post extends outwardly along the radial direction with a limiting rib.

[0048] The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a plug corresponding to the insertion cavity as the first connecting and mating member; the end face of the plug is provided with a insertion hole for the insertion post to be inserted, and the inner wall of the insertion hole is provided with a limiting wall that cooperates with the limiting rib for limiting.

[0049] In a preferred embodiment: the first connector is a protrusion extending along the height direction, and the first connecting mating member is a slot.

[0050] In a preferred embodiment: the base plate is a grid-shaped base plate unit; a plurality of the first connectors are spaced apart on the surface ribs of the grid-shaped base plate unit.

[0051] The present invention also provides an elastic pad, comprising the elastic component and the padding layer as described above; the elastic module is disposed between the base plate and the padding layer; the padding layer is provided with a second connector along the circumferential direction, and the base plate is provided with a second connecting fitting;

[0052] The base plate and the cushion layer are detachably connected by a second connector and a second connecting fitting, and a space is formed between the base plate and the cushion layer to accommodate the elastic module.

[0053] In a preferred embodiment: the second connecting member is circumferentially arranged on the edge of the base plate, the second connecting member includes a strap and a connecting ear connected to the strap, and the second connecting member is inserted into the connecting ear.

[0054] In a preferred embodiment: one end of the strap is connected to the padding layer, and the connecting ear can be adjusted along the length of the strap to maintain the distance between it and the padding layer.

[0055] In a preferred embodiment: the second connecting member is bent into a fastening part, and the second connecting member is provided with a hanging part, wherein the hanging part is connected to the fastening part by the elastic restoring force of the elastic unit or the soft pad layer.

[0056] In a preferred embodiment: the second connector is provided with a strap, the hanging part is connected to the strap, and the strap is connected to the padding layer;

[0057] The inner wall of the fastening part is provided with a limiting groove, and the hanging part is provided with a limiting protrusion. The limiting protrusion engages with the limiting groove.

[0058] Alternatively, the inner wall of the hanging part may be provided with a limiting groove, and the fastening part may be provided with a limiting protrusion, the limiting protrusion engaging with the limiting groove.

[0059] In a preferred embodiment: the inner wall of the fastening part is provided with a first limiting protrusion, and the side of the hanging part opposite to the first limiting protrusion is provided with a second limiting protrusion.

[0060] In a preferred embodiment: one side edge of the fastening portion extends toward the side away from the padding layer, and the hanging portion bends toward the padding layer to form an opening for accommodating one side of the fastening portion.

[0061] The present invention also provides a sofa, including the elastic cushion described above.

[0062] In a preferred embodiment, a support foot is also included; the support foot is connected to the side of the base plate away from the elastic module.

[0063] In a preferred embodiment: it further includes a support back panel, the support back panel including a connecting portion located at the bottom of the base plate, and a support portion forming an angle with the connecting portion; the support portion is used to support the back padding;

[0064] In a preferred embodiment: the connecting part is provided with a slot, and when the connecting part is connected to the base plate, the support foot is placed in the slot.

[0065] The present invention also provides a folding sofa bed, including a first armrest, a second armrest, and an elastic cushion as described above; the base plate is divided into a fixed base plate and a movable base plate, the two sides of the fixed base plate are respectively fixedly connected to the first armrest and the second armrest, and the first armrest and the second armrest are respectively provided with folding hinges, and the two sides of the movable base plate are respectively fixedly connected to the folding hinges.

[0066] The present invention also provides a sofa, comprising: a sofa frame, an elastic module, and a fabric cover;

[0067] The sofa frame includes a base plate, a back plate, and a connecting rod connecting the base plate and the back plate; the elastic modules are respectively disposed on the base plate and the back plate; the fabric cover is disposed on the outside of the elastic modules and is respectively connected to the base plate and the back plate.

[0068] The present invention also provides a sofa, comprising: a frame, a bottom assembly, and a backrest assembly;

[0069] The bottom component and the backrest component each include an elastic module and a fabric cover. The fabric cover of the bottom component covers the side and top surface of the elastic module, and the elastic module of the bottom component is connected to the bottom plate of the frame.

[0070] The frame also includes a backrest support rod; the backrest assembly's fabric cover is fitted over the elastic module and has an opening through which the backrest support rod passes, and the backrest support rod provides support to the backrest assembly after passing through the opening.

[0071] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0072] This invention provides a sofa in which the base plate and elastic units form a detachable connection, allowing the base plate to support and fix the elastic units. This eliminates the need for connectors between the elastic units, simplifying the connection structure. Furthermore, the detachable elastic units facilitate user replacement and allow for easy assembly and disassembly of the sofa. Attached Figure Description

[0073] Figures 1-4 are schematic diagrams of the installation of the sofa in preferred embodiment 1 of the present invention;

[0074] Figure 5 is a cross-sectional view of the sofa in preferred embodiment 1 of the present invention;

[0075] Figure 6 is a schematic diagram of the connection between the base plate and the elastic unit in preferred embodiment 1 of the present invention;

[0076] Figure 7 is an exploded view of the base plate and the elastic unit in preferred embodiment 2 of the present invention;

[0077] Figure 8 is a magnified view of a portion of Figure 7;

[0078] Figures 9-12 are schematic diagrams of the installation of the sofa in preferred embodiment 3 of the present invention;

[0079] Figure 13 is a cross-sectional view of the sofa in preferred embodiment 3 of the present invention;

[0080] Figures 14-17 are schematic diagrams of the disassembly of the sofa in preferred embodiment 4 of the present invention;

[0081] Figure 18 is a cross-sectional view of the back-supporting component in preferred embodiment 4 of the present invention;

[0082] Figure 19 is a schematic diagram of the back plate of the backrest assembly in preferred embodiment 4 of the present invention;

[0083] Figure 20 is an exploded view of the bottom component, backrest component and base plate in preferred embodiment 5 of the present invention;

[0084] Figure 21 is an exploded view of the bottom assembly, backrest assembly, backrest support rod and base plate in preferred embodiment 5 of the present invention;

[0085] Figure 22 is an exploded view of the base plate in preferred embodiment 5 of the present invention;

[0086] Figure 23 is a magnified view of a portion of Figure 22;

[0087] Figure 24 is a schematic diagram of the connection between the cloth cover and the base plate in preferred embodiment 5 of the present invention;

[0088] Figure 25 is a schematic diagram of the connection between the cloth cover and the base plate in preferred embodiment 6 of the present invention;

[0089] Figure 26 is a schematic diagram of the connection between the cloth cover and the base plate in preferred embodiment 7 of the present invention;

[0090] Figure 27 is a schematic diagram of the connection between the cloth cover and the base plate in preferred embodiment 8 of the present invention;

[0091] Figure 28 is a perspective view of the sofa in preferred embodiment 9 of the present invention;

[0092] Figure 29 is a perspective view of the sofa in preferred embodiment 9 of the present invention from another angle;

[0093] Figure 30 is an exploded view of the base plate and elastic module of preferred embodiment 9 of the present invention;

[0094] Figure 31 is an exploded view of the base plate and elastic module from another angle in preferred embodiment 9 of the present invention;

[0095] Figure 32 is a partial enlarged view of Figure 31;

[0096] Figure 33 is a schematic diagram of the connection between the second connector and the second connecting mating member in preferred embodiment 9 of the present invention;

[0097] Figure 34 is a schematic diagram of the second connecting and mating member in preferred embodiment 9 of the present invention;

[0098] Figure 35 is a schematic diagram of the connection between the first connector and the first connecting mating member in a preferred embodiment 10 of the present invention;

[0099] Figure 36 is a cross-sectional view of the connection between the first connector and the first connecting mating member in the preferred embodiment 10 of the present invention;

[0100] Figure 37 is a cross-sectional view of the connection between the first connector and the first connecting mating member in preferred embodiment 11 of the present invention;

[0101] Figures 38-39 are schematic diagrams showing the connection between the second connector and the second connecting mating member in preferred embodiment 12 of the present invention;

[0102] Figures 40-41 are schematic diagrams showing the connection between the second connector and the second connecting mating member in preferred embodiment 13 of the present invention;

[0103] Figures 42-43 are schematic diagrams showing the connection between the second connector and the second connecting mating member in preferred embodiment 14 of the present invention;

[0104] Figures 44-45 are schematic diagrams showing the connection between the second connector and the second connecting mating member in preferred embodiment 15 of the present invention;

[0105] Figures 46-47 are schematic diagrams showing the connection between the second connector and the second connecting mating member in preferred embodiment 16 of the present invention;

[0106] Figure 48 is a schematic diagram of the base plate in preferred embodiment 16 of the present invention;

[0107] Figure 49 is a schematic diagram of the folding sofa bed in preferred embodiment 17 of the present invention;

[0108] Figure 50 is a schematic diagram of the connection between the first connector and the first connecting mating member in a preferred embodiment 17 of the present invention;

[0109] Figures 51-52 are schematic diagrams showing the connection between the second connector and the second connecting mating member in the preferred embodiment 17 of the present invention.

[0110] Figures 53-54 are schematic diagrams showing the connection between the first connector and the first connecting mating member in preferred embodiment 18 of the present invention;

[0111] Figures 55-56 are schematic diagrams showing the connection between the second connector and the second connecting mating member in preferred embodiment 19 of the present invention;

[0112] Figure 57 is a schematic diagram of the connection between the cloth cover and the base plate in the preferred embodiment 20 of the present invention;

[0113] Figure 58 is a schematic diagram of the base plate in the preferred embodiment 20 of the present invention;

[0114] Figure 59 is a cross-sectional view of Figure 57 along the width direction;

[0115] Figure 60 is a cross-sectional view of Figure 57 along its length. Detailed Implementation

[0116] To make the technical solution and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

[0117] Example 1

[0118] Referring to Figures 1-6, this embodiment provides a sofa, including: a base plate 10, an elastic module, a fabric cover 20, a backrest support rod 30, and a backrest assembly 40;

[0119] The elastic module is disposed on the upper surface of the base plate 10, the cloth cover 20 is covered on the outside of the elastic module and connected to the base plate 10; one end of the backrest support rod 30 is connected to the base plate 10, and the other end extends away from the base plate 10.

[0120] The backrest assembly 40 is provided with an opening through which the backrest support rod 30 passes, and the backrest support rod 30 provides support to the backrest assembly 40 after passing through the opening;

[0121] The elastic module includes multiple elastic units 50. The base plate 10 is provided with a first connector that cooperates with the elastic unit 50. The bottom of the elastic unit 50 is provided with a first connecting fitting that cooperates with the first connector. The base plate 10 and the elastic unit 50 are detachably connected through the first connector and the first connecting fitting.

[0122] This structure involves first installing the elastic unit 50 onto the base plate 10 to form an elastic module, then covering the elastic module with a cloth cover 20 and connecting it to the base plate 10. The backrest assembly is a separate component; its installation is completed simply by inserting the backrest support rod into the opening of the backrest assembly.

[0123] Furthermore, in this embodiment, the first connector and the first connecting fitting are interlocked. Specifically, the base plate 10 has an outwardly protruding base 101 on the side facing the elastic unit 50. The base 101 has an insertion cavity 1011. The first connector is an insertion post 1012 disposed at the bottom of the insertion cavity 1011 and extending upward. The side wall of the insertion post 1012 extends outward along the radial direction to form a limiting rib 1013.

[0124] The bottom of the elastic unit 50 is provided with a cavity 501 for accommodating the base 101. The cavity 501 is provided with a plug corresponding to the insertion cavity 1011 as the first connecting and mating member. The end face of the plug is provided with a insertion hole for the insertion post 1012 to be inserted. The inner wall of the insertion hole is provided with a limiting wall that cooperates with the limiting rib 1013 for limiting.

[0125] In other words, this embodiment employs a double-interlocking method to achieve the interlocking of the first and second connectors. The socket 1011 and the plug form the first double interlocking, while the post 1012 and the socket form the second double interlocking. This further increases the connection strength between the first and second connectors.

[0126] In this embodiment, the base plate 10 is a grid-shaped base plate, and a plurality of the first connecting members are spaced apart on the surface ribs 102 of the grid-shaped base plate. Furthermore, the surface ribs 102 and the outer frame 103 of the base plate 10 are in the same plane.

[0127] Example 2

[0128] Referring to Figures 7 and 8, the difference between this embodiment and Embodiment 1 is that the surface ribs 102 of the grid-like base plate 10 protrude outward relative to the outer frame 103 of the base plate 10.

[0129] Example 3

[0130] Referring to Figures 9-13, this embodiment also provides a sofa, including: a sofa frame, an elastic module, and a fabric cover 20;

[0131] The sofa frame includes a base plate 10, a back plate 60, and a connecting rod 70 connecting the base plate 10 and the back plate 60; the elastic modules are respectively disposed on the base plate 10 and the back plate 60; the fabric cover 20 covers the outside of the elastic modules and is respectively connected to the base plate 10 and the back plate 60.

[0132] The elastic module includes multiple elastic units 50. The base plate 10 is provided with a first connector that cooperates with the elastic unit 50. The bottom of the elastic unit 50 is provided with a first connecting fitting that cooperates with the first connector. The base plate 10 and the elastic unit 50 are detachably connected through the first connector and the first connecting fitting.

[0133] This structure connects the base plate 10 and back plate 60 via connecting rods 70 to form a single sofa frame. Elastic units 50 are then installed on the base plate 10 and back plate 60 to form elastic modules. Finally, a fabric cover 20 is placed over these elastic modules and connected to both the base plate 10 and back plate 60. This eliminates the need for a separate backrest module as in Embodiment 1. This also reduces the number of fabric covers 20 from two in Embodiment 1 to one, increasing the overall consistency of the sofa's appearance.

[0134] Example 4

[0135] Referring to Figures 14-19, this embodiment also provides a sofa, including: a frame 80, a bottom component 90, and a backrest component 40;

[0136] The bottom component 90 and the backrest component 40 respectively include an elastic module and a fabric cover 20. The fabric cover 20 of the bottom component 90 covers the side and top surface of the elastic module. The elastic module of the bottom component 90 is connected to the bottom plate 10 of the frame 80.

[0137] The frame 80 also includes a backrest support rod 30; the fabric cover 20 of the backrest assembly 40 is fitted over the elastic module and has an opening through which the backrest support rod 30 passes, and the backrest support rod 30 provides support to the backrest assembly 40 after passing through the opening.

[0138] The elastic module includes multiple elastic units 50. The base plate 10 is provided with a first connector that cooperates with the elastic unit 50. The bottom of the elastic unit 50 is provided with a first connecting fitting that cooperates with the first connector. The base plate 10 and the elastic unit 50 are detachably connected through the first connector and the first connecting fitting.

[0139] This structure integrates the fabric cover 20 and the elastic module of the bottom component 90 into a single bottom component 90. The bottom component 90 is installed and secured by connecting the elastic module and the fabric cover 20 to the base plate 10, respectively. Furthermore, the frame 80 includes support legs 801, which form a detachable connection with the backrest support rod 30, facilitating the installation and removal of the backrest support rod 30. The detachable connection can be a plug-in connection, a threaded connection, or other similar connection methods.

[0140] In addition, in this embodiment, the fabric cover 20 and the back panel 60 in the backrest assembly 40 are hooked together. Specifically, the tube 61 of the back panel 60 protrudes upward, and the bottom of the fabric cover 20 is provided with a hook 201. The two are hooked together to form a fixed connection.

[0141] Example 5

[0142] Referring to Figures 20 and 21, the difference between this embodiment and Embodiment 4 is that the base plate 10 in Embodiment 4 is a grid-like base plate 10, while in this embodiment it is a one-piece base plate 10, meaning the base plate 10 is no longer grid-like but a single flat surface. The first connecting member array is disposed on the upper surface of the one-piece base plate 10. Furthermore, the frame 80 has a cavity for accommodating the base plate 10; the side of the base plate 10 is provided with a step 1052 that abuts against the upper surface of the frame 80. By simply placing the step 1052 of the base plate 10 on the upper surface of the frame 80, the frame 80 can support the base plate 10, thus completing the installation of the base plate 10.

[0143] Referring further to Figures 22-24, in this embodiment, the integrated base plate 10 includes an elastic fabric layer 103 and a clamping frame arranged circumferentially along the elastic fabric layer 103. The clamping frame is used to clamp and fix the elastic fabric layer 103. Specifically, the clamping frame includes a first frame 104 and a second frame 105, which are arranged inside and outside each other. The elastic fabric layer 103 is clamped between the first frame 104 and the second frame 105. The inner side of the first frame 104 has a cavity, and the second frame 105 has a tube 1051 extending into the cavity. A certain gap exists between the upper surface of the tube 1051 and the upper surface of the cavity to form a clamping space for clamping the elastic fabric layer 103. In addition, the lower surface of the tube 1051 extends downward and protrudes outward from the lower surface of the first frame 104, thereby forming the step 1052.

[0144] In this embodiment, the fabric cover 20 and the first frame 104 are fixed together. The outer side of the first frame 104 is provided with a slot 1041, and the edge of the fabric cover 20 is provided with a fabric cover fastener 202. The fabric cover fastener 202 can be inserted into the slot 1041 to connect the fabric cover 20 and the first frame 104 together, thereby completing the fixing of the fabric cover 20 and the base plate 10.

[0145] Example 6

[0146] Referring to Figure 25, in this embodiment, the second frame 105 and the first frame 104 are arranged vertically. The upper surface of the first frame 104 has a cavity. The second frame 105 has a tube 1051 extending into the cavity, and the middle part of the side of the tube 1051 is exposed outside the cavity and extends outward in the horizontal direction so that there is a certain gap between the first frame 104 and the second frame 105 to form a clamping space for clamping the elastic fabric layer 103.

[0147] In this embodiment, the fabric cover 20 and the first frame 104 are fixed together. The bottom of the first frame 104 is provided with a slot 1041, and the edge of the fabric cover 20 is provided with a fabric cover fastener 202. The fabric cover fastener 202 is inserted into the slot 1041 after passing around the side of the first frame 104, so that the fabric cover 20 and the first frame 104 can be connected together, thereby completing the fixing of the fabric cover 20 and the base plate 10.

[0148] Example 7

[0149] Referring to Figure 26, the difference between this embodiment and embodiment 6 is that a hook 1042 is provided at the bottom of the first frame 104, and a hanging hole 2021 is provided on the fabric cover buckle 202. After the fabric cover buckle 2021 passes around the side of the first frame 104, the hook 1042 is hooked to the hanging hole 2021, so that the fabric cover 20 and the first frame 104 can be connected together, thereby completing the fixation of the fabric cover 20 and the base plate 10.

[0150] Example 8

[0151] Referring to Figure 27, the difference between this embodiment and embodiment 6 is that the bottom of the first frame 104 is provided with a post 1043, and the fabric cover fastener 202 is provided with a hole 2022. After the fabric cover fastener 202 passes around the side of the first frame 104, the post 1043 is inserted into the hole 2022, so that the fabric cover 20 and the first frame 104 can be connected together, thereby completing the fixation of the fabric cover 20 and the base plate 10.

[0152] Example 9

[0153] Referring to Figures 28-34, this embodiment provides a sofa, including an elastic cushion 1 and support legs 2 for supporting the elastic cushion 1. In this embodiment, the support legs 2 are divided into two front support legs and two rear support legs.

[0154] The elastic pad 1 includes an elastic component and a cushion layer 13; the elastic component further includes an elastic module and a base plate 11. The elastic module is disposed between the base plate 11 and the cushion layer 13; the elastic module includes a plurality of elastic units 12 arranged in an array on the base plate 11. In this embodiment, the elastic units 12 are arranged in a square array, but they can also be arranged according to other rules, such as staggered arrangement, which is a simple substitution of this embodiment.

[0155] The base plate 11 is provided with a first connector 111, and the bottom of the elastic unit 12 is provided with a first connecting fitting 121 that cooperates with the first connector 111; the soft pad layer 13 is provided with a second connector 131 along the circumferential direction, and the base plate 11 is provided with a second connecting fitting 112 that cooperates with the second connector 131.

[0156] The base plate 11 and the elastic unit 12 are detachably connected through the first connector 111 and the first connecting mating member 121. The base plate 11 and the soft pad layer 13 are detachably connected through the second connector 131 and the second connecting mating member 112, and a space for accommodating the elastic module is formed between the base plate 11 and the soft pad layer 13.

[0157] After the above settings are implemented, the base plate 11, elastic module, and soft pad layer 13 of the elastic pad 1 can all be disassembled. This allows the manufacturer to unpack the elastic pad 1 during transportation to reduce the transportation volume, and also allows the user to disassemble the soft pad layer 13 after long-term use of the elastic pad 1 to replace some of the elastic units 12 or replace the soft pad layer 13 with a new one, thus extending the service life of the elastic pad 1.

[0158] The base plate 1 serves two functions: supporting the elastic unit 12 and fixing the elastic unit 12. This eliminates the need for additional structures to connect the elastic units 12, further simplifying their structure and increasing installation convenience. Furthermore, the soft pad layer 13, after connecting to the base plate 11, applies force to the elastic module, placing it in a pre-tightened state. Users can also adjust the pre-tightening force of the elastic module by adjusting the connection strength of the second connector 131 and the second connecting mating part 112, thereby achieving the goal of independently adjusting the softness and hardness of the elastic pad 1.

[0159] In this embodiment, the first connector 111 and the first connecting fitting 121 are screwed together. To achieve the screwed connection, the first connector 111 includes a base 1111 and two screw-in grooves 1112 disposed on the surface of the base; the two screw-in grooves 1112 are rotationally symmetrically distributed around the axis of the base 1111. In this embodiment, there are two screw-in grooves 1112. However, the number of screw-in grooves 1112 can be increased as needed, or an arc-shaped screw-in groove 1112 can be used, both of which are simple replacements in this embodiment.

[0160] The first connecting and mating part 121 includes a cavity 1211 and a screw-on part 1212. The cavity 1211 is disposed at the bottom of the elastic unit 12. When screwed on, the base 1111 and the cavity 1211 can initially position the elastic unit 12 and the screw-on groove 1112 so that the elastic unit 12 and the screw-on groove 1112 can be screwed on.

[0161] The screw-on portion 1212 includes an integrally formed connecting portion 12122 and a limiting portion 12121. The connecting portion 12122 is fixedly connected to the inner wall of the cavity 1211. The screw-on groove 1112 is divided into a first part 11121 and a second part 11122. The width of the first part 11121 is greater than the width of the limiting portion 12121, and the width of the second part 11122 is less than the width of the limiting portion 12121 but greater than the width of the connecting portion 12122.

[0162] When the elastic unit 12 is installed, the limiting part 12121 passes through the first part 11121. By rotating the elastic unit 12, the connecting part 1211 moves to the second part 11122. In this state, the limiting part and the elastic unit 12 can clamp the fixed base 1111, thereby limiting the separation of the elastic unit and the base plate.

[0163] In other embodiments of this application, the first connecting member 121 only includes a screw-on portion 1212, which is fixed to the bottom of the elastic unit 12. The first connecting member 111 only includes a screw-on groove 1112 formed on the base plate 11. The connection between the elastic unit and the base plate can also be achieved through the cooperation of the screw-on portion 1212 and the screw-on groove 1112.

[0164] First, align the cavity 1211 of the elastic unit 12 with the base 1111 of the base plate 11. Then, align the protrusion 1212 with the first part 11121 of the screw-fit groove 1112 and insert it into the screw-fit groove 1112. At this time, the end face of the protrusion 1212 passes through the screw-fit groove 1112, and the shaft 12122 of the protrusion 1212 is placed in the screw-fit groove 1112. Then, rotate the elastic unit 12 along the extension direction of the screw-fit groove 1112, so that the shaft 12122 of the protrusion 1212 rotates along the screw-fit groove 1112 into the second part 11122. Since the width of the second part 11122 is smaller than the width of the end face of the protrusion 1212, the elastic unit 12 and the base 1111 are now in a limited fit along the thickness direction of the base 1111. To remove the elastic unit 12, rotate it in the opposite direction so that the body 12122 of the protrusion 1212 rotates along the screw groove 1112 into the first part 11121. Since the width of the first part 11121 is greater than the width of the end face 12121 of the protrusion 1212, the elastic unit 12 and the base 1111 are released from the limiting fit along the thickness direction of the base 1111, and the elastic unit 12 can be removed from the base plate 11.

[0165] In addition to the aforementioned screw-on connection methods, other common screw-on connections in existing technologies, such as threaded connections, can also be used.

[0166] In this embodiment, in order to connect the cushion layer 13 and the base plate 11, the second connecting fitting 112 is arranged circumferentially along the upper surface of the base plate 11.

[0167] The second connecting member 112 includes a tongue 1121 and a snap-fit ​​protrusion 1122. One side of the tongue 1121 is fixedly connected to the base plate 11, and the other side extends toward the second connecting member 131 to form an insertion end. The snap-fit ​​protrusion 1122 is formed on one side of the insertion end. The second connecting member 131 includes a strap and a connecting ear 1122. One end of the strap is connected to the padding layer 13, and the other end of the strap extends toward the base plate 11. The connecting ear 1122 is installed on the strap. The connecting ear 1122 includes an outer body and a clamping part hinged to the outer body. The end of the clamping part facing the second connecting member 112 maintains a fastening force toward the outer body due to the action of a torsion spring.

[0168] When the second connector and the second connecting mating part are connected, a force is applied to the end of the clamping part away from the tongue, so that the insertion end passes between the outer body and the clamping part. The force applied to the clamping part is released, and the buckle protrusion and the clamping part can be hung and fixed. Under the action of the torsion spring, the end of the clamping part is not easy to detach from the buckle protrusion, thereby restricting the separation of the second connector and the second connecting mating part.

[0169] Furthermore, to facilitate adjustment of the fastening effect between the padding layer and the base plate, the connecting ear can be adjusted along the length of the strap to maintain the distance between it and the padding layer.

[0170] Specifically, the outer body is provided with a connection port, and the other end 1311 of the strap passes through the connection port 11222 and then bends in the opposite direction to be fixedly connected to the strap body 1312.

[0171] The other end 1311 of the strap is fixedly connected to the strap body 1312 by magnetic attraction or Velcro. By adjusting the length of the strap passing through the connection port 11222, the distance between the padding layer 13 and the base plate 11 can be adjusted, thereby adjusting the pre-compression degree of the elastic unit 12.

[0172] The sofa in this embodiment includes a backrest and a support back panel 4 to support the back cushion 3. The support back panel 4 includes a connecting portion 41 located at the bottom of the base plate 11 and a support portion 42 forming an angle with the connecting portion 41. The support portion 42 is used to support the back cushion 3.

[0173] The connecting part 41 is provided with a slot 411. When the connecting part 41 is connected to the base plate 11, the support foot 2 is placed in the slot 411. This connects the support back plate 4 and the support foot 2 together, increasing the load-bearing capacity of the support back plate 4.

[0174] It should be noted that, in other preferred embodiments, the first connecting member 121 includes a base and a screw-in portion. The base protrudes from the bottom of the elastic unit, and the screw-in portion includes an integrally formed connecting portion 12122 and a limiting portion 12121, with the connecting portion fixedly connected to the base. The first connecting member includes a cavity and a screw-in groove. The cavity is recessed within the base plate, with its opening facing the elastic unit, and the screw-in groove is formed at the bottom of the cavity. During screw-in engagement, the cavity of the base plate and the base of the elastic unit can serve as guides and positions, facilitating the screw-in of the elastic unit to the base plate.

[0175] Example 10

[0176] Referring to Figures 35 and 36, in this embodiment, the first connector 111 and the first connecting mating member 121 are plug-in mating.

[0177] To achieve a plug-in fit, the base plate 11 has an outwardly protruding base 1111 on the side facing the elastic unit 12. The base 1111 has a plug cavity 1113, and the first connector 111 includes a limiting rib 1114 disposed on the inner wall of the plug cavity 1113. In this embodiment, there are four limiting ribs 1114, which are spaced apart along the inner wall of the plug cavity 1113.

[0178] Correspondingly, the bottom of the elastic unit 12 is provided with a cavity 1211 for accommodating the base 1111, and the cavity 1211 is provided with a post 1213 corresponding to the insertion cavity 1113 as the first connecting and mating member 121; the side wall of the post 1213 extends radially outward to form a limiting wall 1214 that mates with the limiting rib 1114.

[0179] In this embodiment, the opposing sides of the limiting rib 1114 and the limiting wall 1214 are inclined surfaces, while the opposing sides are flat surfaces. When inserting the elastic unit 12 and the base plate 11, the cavity 1211 is first aligned with the base 1111. Then, during the insertion process, the inclined surfaces of the limiting wall 1214 and the limiting rib 1114 abut and press against each other, generating a pressing force that causes the limiting rib 1114 to open outward, allowing the insertion post 1213 to continue moving downward relative to the insertion cavity 1113. When the inclined surfaces of the limiting wall 1214 and the limiting rib 1114 separate, and the pressing force decreases, the limiting rib 1114 contracts, allowing the opposing sides of the limiting member and the plane of the limiting wall 1214 to interlock and form a limiting fit.

[0180] Example 11

[0181] Referring to Figure 37, in this embodiment, the first connector 111 and the first connecting mating member 121 are plug-in mating.

[0182] The insertion and engagement in this embodiment differs from that in Embodiment 2. Specifically, the base plate 11 has an outwardly protruding base 1111 on the side facing the elastic unit 12. The base 1111 has an insertion cavity 1113. The first connector 111 is an insertion post 1114 disposed at the bottom of the insertion cavity 1113 and extending upward. The side wall of the insertion post 1114 extends outward along the radial direction to form a limiting rib 1115.

[0183] The bottom of the elastic unit 12 is provided with a cavity for accommodating the base 1111. The cavity is provided with a plug corresponding to the insertion cavity 1113 as the first connecting mating member 121. The end face of the plug is provided with a socket for the insertion post 1114 to be inserted. The inner wall of the socket is provided with a limiting wall that cooperates with the limiting rib 1115 for limiting.

[0184] In other words, this embodiment employs a double-interlocking method to achieve the interlocking of the first connector 111 and the second connector 131. The socket 1113 and the plug form the first double interlocking, while the post 1114 and the socket form the second double interlocking. This further increases the connection strength between the first connector 111 and the second connector 131, and also enhances the guiding properties of the connection between them.

[0185] Example 12

[0186] Referring to Figures 38 and 39, the difference between this embodiment and Embodiment 1 is that the second connecting member 112 is bent into a buckling part 1123 and a fixing part 1124. The fixing part 1124 is fixedly connected to the base plate 11, and the buckling part 1123 is folded to one side with the opening tilted towards the base plate 11. The second connecting member 131 includes a strap and a hanging part 1313. One end of the strap is fixedly connected to the padding layer 13, and the hanging part 1313 is installed on one side of the strap. The hanging part 1313 is bent towards the padding layer with the opening facing the padding layer 13.

[0187] When the padding layer 13 is in the hanging state, one side of the hanging part 1313 is located in the opening of the fastening part 1123. Through the elastic restoring force of at least one of the elastic component, the padding layer 13, or the strap, the strap and the hanging part 1313 have a force perpendicular to the base plate 11, and the fastening part 1123 can restrict the separation of the padding layer 13 and the base plate 11.

[0188] To indicate whether the user has installed the strap correctly, the inner wall of the opening 11231 of the fastening part 1123 is provided with a limiting groove 11232, and the hanging part 1313 has a limiting protrusion 13131 that cooperates with the limiting groove 11232. When the strap is installed correctly, the limiting protrusion 13131 engages in the limiting groove 11232 and emits a prompt sound.

[0189] Alternatively, the inner wall of the hanging part 1313 may be provided with a limiting groove, and the fastening part 1123 may be provided with a limiting protrusion extending in the horizontal direction, the limiting protrusion engaging with the limiting groove.

[0190] Example 13

[0191] Referring to Figures 40 and 41, the difference between this embodiment and embodiment 4 is that the base plate 11 includes a base plate body 113 and a connecting pipe 114 for supporting the base plate body 113. A gap is formed between the side of the base plate body 113 and the connecting pipe 114. One side of the fixing part 1124 is bent toward the gap and inserted into the gap to be fixedly connected to the connecting pipe 114.

[0192] In this embodiment, the inner wall of the opening of the fastening part 1123 is not provided with a limiting groove, and the limiting protrusion 13131 and the groove wall of the hanging part 1313 form an interference fit to increase the connection stability.

[0193] Example 14

[0194] Referring to Figures 42-43, the difference between this embodiment and Embodiment 4 is that the base plate 11 includes a base plate body 113 and a connecting pipe 114 for supporting the base plate body 113; one side of the fixing part 1124 is fixedly connected to the connecting pipe 114, and one side of the fastening part 1123 extends away from the cushion layer. This causes the fastening part 1123 to be located on the lower end face of the connecting pipe 114 and extend downward along the height direction of the connecting pipe 114.

[0195] The hanging part 1313 is bent toward the padding layer to form an opening for accommodating one side of the fastening part 1123. During installation, the strap is stretched so that the hanging part 1313 passes the fixing part 1124, and then the strap is released. The elastic restoring force of at least one of the elastic component, the padding layer, or the strap causes the strap and the hanging part 1313 to have a force perpendicular to the base plate. The fastening part 1123 is inserted into the bent opening of the hanging part 1313 to limit the separation of the padding layer and the base plate.

[0196] To increase the stability of the hanging part, the inner wall of the hanging part 1313 is provided with a limiting protrusion 13131 that is interference-fitted with the fastening part 1123.

[0197] Example 15

[0198] Referring to Figures 44-45, the difference between this embodiment and Embodiment 4 is that the fastening part 1123 is bent into a slot, which is a groove perpendicular to the base plate 11 and extends through it. Furthermore, the inner wall of the slot in the fastening part 1123 has a limiting protrusion 11233. The hanging part 1313 has a limiting groove 13132 on the side facing the limiting protrusion 11233.

[0199] When the padding layer 13 and the base plate 11 are connected, the limiting protrusion 11233 and the limiting groove 13132 engage to restrict the separation of the padding layer 13 and the base plate 11.

[0200] Example 16

[0201] Referring to Figures 46-48, the difference between this embodiment and Embodiment 4 is that one side of the fixing part 1124 is fixedly connected to the base plate 11, and the fastening part 1123 is bent toward the side away from the padding layer 13 and formed with an opening 1125 facing downwards. Through the elastic restoring force of at least one of the elastic component, the padding layer 13, or the strap, the strap and the hanging part 1313 have a force perpendicular to the base plate, and one side of the hanging part 1313 is inserted into the opening 1125 and hung on the fastening part 1123.

[0202] Furthermore, to improve the stability of the hanging part 1313 and the insertion port, a wedge 13133 is formed on the side of the hanging part 1313 away from the strap. When one end of the hanging part 1313 is inserted into the insertion port, the wedge 13133 can abut against the edge of the inner wall of the insertion port, reducing the occurrence of the hanging part 1313 detaching.

[0203] Example 17

[0204] Referring to Figures 49-52, this embodiment provides a folding sofa bed, including an elastic pad 1 and support legs 2 for supporting the elastic pad 1.

[0205] The elastic pad 1 includes an elastic component and a cushion layer 13; the elastic component further includes a base plate 11 and an elastic module. The elastic module is disposed between the base plate 11 and the cushion layer 13; the elastic module includes a plurality of elastic units 12 arranged in an array on the base plate 11. In this embodiment, the elastic units 12 are arranged in a square array, but they can also be arranged according to other rules, such as staggered arrangement, which is a simple replacement of this embodiment. A first connector 111 is provided on the base plate 11, and a first connecting fitting 121 that cooperates with the first connector 111 is provided at the bottom of the elastic unit 12; a second connector 131 is provided along the circumferential direction on the cushion layer 13, and a second connecting fitting 112 that cooperates with the second connector 131 is provided on the base plate 11.

[0206] The base plate 11 and the elastic unit 12 are detachably connected through the first connection and the first connecting fitting 121. The base plate 11 and the soft pad layer 13 are detachably connected through the second connection 131 and the second connecting fitting 112, and a space for accommodating the elastic module is formed between the base plate 11 and the soft pad layer 13.

[0207] To achieve the folding function, this embodiment also includes a first armrest 5 and a second armrest 6; the base plate 11 is divided into a fixed base plate and a movable base plate. The two sides of the fixed base plate are fixedly connected to the first armrest 5 and the second armrest 6, respectively. Folding hinges 7 are also provided on the first armrest 5 and the second armrest 6, and the two sides of the movable base plate are fixedly connected to the folding hinges 7, respectively. In this way, the elastic unit 12 located on the movable base plate 11 can rotate with the base plate 11, thereby causing a part of the cushion layer 13 to swing and change its angle, thus transforming between the two forms of a sofa and a bed.

[0208] The second connecting component is bent into a buckling part 1123 and a fixing part 1124. The fixing part 1124 is fixedly connected to the base plate 11. The buckling part 1123 is folded to one side, and the opening after folding is inclined towards the base plate. The second connecting component includes a strap and a hanging part 1313. One end of the strap is fixedly connected to the padding layer. The hanging part 1313 is installed on one side of the strap. The hanging part 1313 is bent towards the padding layer, and the opening after bending is towards the padding layer.

[0209] In this embodiment, the base plate 11 includes a base plate body 113 and a connecting pipe 114 for supporting the base plate body 113. Specifically, the connecting pipe 114 is a round pipe, and the fixing part 1124 is bent and wrapped around the side wall of the connecting pipe 114. When the padding layer is in the hanging state, one side of the hanging part 1313 is located in the opening of the buckling part 1123. Through the elastic recovery force of at least one of the elastic component, the padding layer or the strap, the strap and the hanging part 1313 have a force perpendicular to the base plate. The buckling part 1123 can restrict the separation of the padding layer and the base plate.

[0210] Furthermore, the inner wall of the fastening part 1123 is formed with a first limiting protrusion 11234, and the hanging part 1313 is provided with a second limiting protrusion 13134 on the side opposite to the first limiting protrusion 11234. When the padding layer 13 is in the hanging state, the first limiting protrusion 11234 and the hanging part 1313, and the second limiting protrusion 13133 and the fastening part 1123 are respectively formed with an interference fit, which further increases the stability of the connection.

[0211] Example 18

[0212] Referring to Figures 53-54, in this embodiment, the first connecting member 111 is a straight protrusion extending along the height direction, and the first connecting mating member 121 is a straight slot. By interlocking the two, the elastic unit 12 and the base plate 11 can be fixed. As a simple alternative to this embodiment, the shapes of the protrusion and slot can also be changed, for example, to a cross shape, a star shape, etc.

[0213] Furthermore, in this embodiment, the base plate 11 is composed of multiple grid-shaped base plate units; multiple first connectors 111 are spaced apart on the surface ribs of the grid-shaped base plate units.

[0214] Example 19

[0215] Referring to Figures 55-56, the difference between this embodiment and embodiment 4 is that the fastening part is horizontally bent and the bent edges of multiple fastening parts are arranged facing each other.

[0216] When the padding layer 13 is hung, the strap connects to one end of the hanging part 1313 and bends horizontally, so that the opening of the bend in the hanging part 1313 faces the edge of the bend in the fastening part 1123. The bend edge of the fastening part 1123 is inserted into the opening of the bend in the hanging part 1313. Through the elastic restoring force of at least one of the elastic component, the padding layer 13, or the strap, the strap has a force perpendicular to the base plate. The strap pulls the hanging part 1313 away from the bend of the fastening part 1123, so that the fastening part 1123 and the hanging part 1313 fit tightly together.

[0217] Example 20

[0218] Referring to Figures 57-60, this embodiment provides another method for fixing the base plate 10 and the fabric sleeve 20. Specifically, the base plate 10 includes an outer frame 106 and a support rod 107 placed inside the outer frame 106, and the support rod 107 is provided with the first connecting member;

[0219] The edge of the fabric cover 20 is sewn to wrap the snap-fit ​​roller 202. The outer frame 106 extends inward along the horizontal direction from the lower surface of the outer frame 106 in the thickness direction. The inner sidewall of the outer frame 106 extends inward along the horizontal direction from the snap-fit ​​block 1062. The snap-fit ​​block 1062 and the convex edge 1061 are spaced apart along the thickness direction of the outer frame 106 to form snap-fit ​​grooves that engage with the snap-fit ​​roller 102.

[0220] In this embodiment, the locking blocks 1062 are disposed on two opposing inner sidewalls of the outer frame 106. The protruding edges are divided into a first protruding edge extending along the length direction of the outer frame 106 and a second protruding edge extending along the width direction. A locking groove is formed between the first protruding edge and the bottom of the support rod, and a locking groove is also formed between the second protruding edge and the locking block 1062. In this way, the four locking rollers 202 on the fabric cover 20 along the length and width directions can be engaged with the locking grooves to realize the installation and fixation of the fabric cover 20. During installation, the side of the fabric cover 20 is wrapped around the bottom plate 10 and then the locking rollers 202 are fixed to the locking grooves from the bottom.

[0221] The above is only one specific embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be deemed as infringing the protection scope of the present invention. Industrial applicability

[0222] This invention provides an elastic component, an elastic cushion, and a sofa. A detachable connection is formed between a base plate and the elastic units, allowing the base plate to support and fix the elastic units. This eliminates the need for connectors between the elastic units, simplifying the connection structure. Furthermore, the detachable nature of the elastic units facilitates user replacement and allows for easy installation and disassembly, demonstrating good industrial applicability.

Claims

1. A sofa, characterized in that... include: Base plate, elastic module, fabric cover, backrest support rod and backrest assembly; The elastic module is disposed on the upper surface of the base plate, and the fabric cover is disposed on the outside of the elastic module and connected to the base plate; one end of the backrest support rod is connected to the base plate, and the other end extends away from the base plate; The backrest assembly is provided with an opening through which the backrest support rod passes, and the backrest support rod provides support to the backrest assembly after passing through the opening; The elastic module includes multiple elastic units. A first connector that mates with the elastic unit is provided on the base plate. A first connecting fitting that mates with the first connector is provided at the bottom of the elastic unit. The base plate and the elastic unit are detachably connected through the first connector and the first connecting fitting.

2. A sofa, characterized in that... include: Sofa frame, flexible modules, and fabric cover; The sofa frame includes a base plate, a back plate, and a connecting rod connecting the base plate and the back plate; the elastic modules are respectively disposed on the base plate and the back plate; the fabric cover is disposed on the outside of the elastic modules and is respectively connected to the base plate and the back plate; The elastic module includes multiple elastic units. A first connector that mates with the elastic unit is provided on the base plate. A first connecting fitting that mates with the first connector is provided at the bottom of the elastic unit. The base plate and the elastic unit are detachably connected through the first connector and the first connecting fitting.

3. A sofa, characterized in that... include: Frame, bottom component, and backrest component; The bottom component and the backrest component each include an elastic module and a fabric cover. The fabric cover of the bottom component covers the side and top surface of the elastic module, and the elastic module of the bottom component is connected to the bottom plate of the frame. The frame also includes a backrest support rod; the fabric cover of the backrest assembly is fitted over the elastic module and has an opening through which the backrest support rod passes, and the backrest support rod provides support to the backrest assembly after passing through the opening. The elastic module includes multiple elastic units. A first connector that mates with the elastic unit is provided on the base plate. A first connecting fitting that mates with the first connector is provided at the bottom of the elastic unit. The base plate and the elastic unit are detachably connected through the first connector and the first connecting fitting.

4. A sofa according to any one of claims 1-3, characterized in that: The first connector and the first connecting mating member are plug-in mating.

5. A sofa according to claim 4, characterized in that: The base plate has an outwardly protruding base on the side facing the elastic unit. The base has an insertion cavity, and the first connecting member is a limiting rib provided on the inner wall of the insertion cavity. The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a post corresponding to the insertion cavity as the first connecting and mating member; the side wall of the post extends radially outward to form a limiting wall that mates with the limiting rib.

6. A sofa according to claim 4, characterized in that: The base plate has a protruding base on the side facing the elastic unit. The base has a cavity. The first connector is a post that is disposed at the bottom of the cavity and extends upward. The side wall of the post extends outward in a radial direction as a limiting rib. The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a plug corresponding to the insertion cavity as the first connecting and mating member; the end face of the plug is provided with a insertion hole for the insertion post to be inserted, and the inner wall of the insertion hole is provided with a limiting wall that cooperates with the limiting rib for limiting.

7. A sofa according to claim 4, characterized in that: The first connector is a protrusion extending along the height direction, and the first connecting mating part is a slot.

8. A sofa according to claim 4, characterized in that: The base plate is a grid-shaped base plate; multiple first connectors are spaced apart on the surface ribs of the grid-shaped base plate.

9. A sofa according to claim 8, characterized in that: The surface ribs protrude outward relative to the outer frame of the base plate or are in the same plane as the outer frame of the base plate.

10. A sofa according to claim 4, characterized in that: The base plate is a one-piece base plate, and the upper surface of the one-piece base plate is provided with an array of the first connecting members.

11. A sofa according to claim 3, characterized in that: The frame has a cavity for accommodating the base plate; the side of the base plate is provided with a step that abuts against the upper surface of the frame.

12. A sofa according to claim 11, characterized in that: The base plate includes an elastic fabric layer and a clamping frame arranged circumferentially along the elastic fabric layer, the clamping frame being used to clamp and fix the elastic fabric layer.

13. A sofa according to claim 12, characterized in that: The clamping frame includes a first frame and a second frame, and the elastic fabric layer is clamped between the first frame and the second frame.

14. A sofa according to claim 13, characterized in that: The edge of the fabric cover is provided with a fabric cover fastener, which is connected and fixed to the first frame or the second frame.

15. A sofa according to any one of claims 1-3, characterized in that: The base plate includes an outer frame and a support rod placed inside the outer frame, and the support rod is provided with the first connector; The edge of the fabric cover wraps around the snap-fit ​​roller. The lower surface of the outer frame extends inward in the horizontal direction along the thickness direction to form a protruding edge. The inner sidewall of the outer frame extends inward in the horizontal direction to form a snap-fit ​​block. The snap-fit ​​block and the protruding edge are spaced apart along the thickness direction of the outer frame to form a snap-fit ​​groove that engages with the snap-fit ​​roller.

16. An elastic component, characterized in that... It includes a base plate and an elastic module; the elastic module includes multiple elastic units, the base plate is provided with a first connector that cooperates with the elastic units, and the bottom of the elastic unit is provided with a first connecting fitting that cooperates with the first connector; the base plate and the elastic units are detachably connected through the first connector and the first connecting fitting.

17. The elastic component according to claim 16, characterized in that: The first connector and the first connecting mating part are screwed together.

18. The elastic component according to claim 17, characterized in that: The first connector includes a screw-in groove, and the first connecting fitting includes a screw-in portion connected to the elastic unit, wherein the screw-in groove and the screw-in portion are screwed together. Alternatively, the first connecting component may include a screw-in groove disposed in the elastic unit, and the first connecting component may include a screw-in portion connected to the base plate, wherein the screw-in groove and the screw-in portion are screwed together.

19. An elastic component according to claim 18, characterized in that: The screw joint includes a connecting part and a limiting part. The screw joint groove is provided with a first part and a second part. The connecting part and the limiting part can pass through the first part. When the connecting part moves to the second part, the limiting part restricts the separation of the elastic unit and the base plate.

20. An elastic component according to claim 19, characterized in that: The first connector further includes a base protruding from the base plate, the screw groove is disposed on the base, the first connecting fitting includes a cavity disposed at the bottom of the elastic unit, the screw part is located in the cavity, and the base is adapted to the cavity; Alternatively, the first connecting component may further include a base protruding from the bottom of the elastic unit, a screw-in groove disposed on the base, the first connecting component including a cavity disposed on the base plate, the screw-in groove being opened within the cavity, the screw-in part being connected to the base, and the base being adapted to the cavity.

21. The elastic component according to claim 20, characterized in that: The swivel groove is provided in at least two parts; the plurality of swivel grooves are distributed in a rotationally symmetrical manner around the axis of the base.

22. The elastic component according to claim 17, characterized in that: The base plate is provided with a base on the side facing the elastic unit, and the first connector includes at least one screw groove provided on the surface of the base for the first connector to be screwed on.

23. The elastic component according to claim 18, characterized in that: The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a protrusion corresponding to the screw groove as the first connecting mating member; the screw groove is divided into a first part and a second part, the width of the first part is greater than the width of the protrusion, and the width of the second part is less than the width of the protrusion. When the elastic unit rotates to the position corresponding to the protrusion and the first part, the elastic unit and the base are released from the limiting engagement along the thickness direction of the base; when the elastic unit rotates to the position corresponding to the protrusion and the second part, the elastic unit and the base are limited to the engagement along the thickness direction of the base.

24. The elastic component according to claim 16, characterized in that: The first connector and the first connecting mating member are plug-in mating.

25. An elastic component according to claim 24, characterized in that: The base plate has an outwardly protruding base on the side facing the elastic unit. The base has an insertion cavity, and the first connecting member is a limiting rib provided on the inner wall of the insertion cavity. The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a post corresponding to the insertion cavity as the first connecting and mating member; the side wall of the post extends radially outward to form a limiting wall that mates with the limiting rib.

26. The elastic component according to claim 25, characterized in that: The base plate has a protruding base on the side facing the elastic unit. The base has a cavity. The first connector is a post that is disposed at the bottom of the cavity and extends upward. The side wall of the post extends outward in a radial direction as a limiting rib. The bottom of the elastic unit is provided with a cavity for accommodating the base, and the cavity is provided with a plug corresponding to the insertion cavity as the first connecting and mating member; the end face of the plug is provided with a insertion hole for the insertion post to be inserted, and the inner wall of the insertion hole is provided with a limiting wall that cooperates with the limiting rib for limiting.

27. The elastic component according to claim 16, characterized in that: The first connector is a protrusion extending along the height direction, and the first connecting mating part is a slot.

28. An elastic component according to claim 16, characterized in that: The base plate is a grid-shaped base plate unit; multiple first connectors are spaced apart on the surface ribs of the grid-shaped base plate unit.

29. An elastic pad, characterized in that... include: The elastic component and the padding layer as described in any one of claims 16-28; the elastic module is disposed between the base plate and the padding layer; the padding layer is provided with a second connector along the circumferential direction, and the base plate is provided with a second connecting fitting; The base plate and the cushion layer are detachably connected by a second connector and a second connecting fitting, and a space is formed between the base plate and the cushion layer to accommodate the elastic module.

30. An elastic pad according to claim 29, characterized in that: The second connecting component is circumferentially arranged on the edge of the base plate. The second connecting component includes a strap and a connecting ear connected to the strap. The second connecting component is inserted into the connecting ear.

31. An elastic pad according to claim 30, characterized in that: One end of the strap is connected to the padding layer, and the connecting ear can be adjusted along the length of the strap to maintain the distance between it and the padding layer.

32. An elastic pad according to claim 29, characterized in that: The second connecting component is bent into a fastening part, and the second connecting component is provided with a hanging part. The hanging part is connected to the fastening part by the elastic restoring force of the elastic unit or the soft pad layer.

33. An elastic pad according to claim 32, characterized in that: The second connector is provided with a strap, the hanging part is connected to the strap, and the strap is connected to the padding layer; The inner wall of the fastening part is provided with a limiting groove, and the hanging part is provided with a limiting protrusion. The limiting protrusion engages with the limiting groove. Alternatively, the inner wall of the hanging part may be provided with a limiting groove, and the fastening part may be provided with a limiting protrusion, the limiting protrusion engaging with the limiting groove.

34. An elastic pad according to claim 32, characterized in that: The inner wall of the fastening part is provided with a first limiting protrusion, and the side of the hanging part opposite to the first limiting protrusion is provided with a second limiting protrusion.

35. An elastic pad according to claim 32, characterized in that: The edge of the fastening part extends away from the padding layer, and the hanging part bends toward the padding layer to form an opening for accommodating one side of the fastening part.

36. A sofa, characterized in that: Includes the elastic pad according to any one of claims 29-35.

37. A sofa according to claim 36, characterized in that: It also includes support feet; the support feet are connected to the side of the base plate away from the elastic module.

38. A sofa according to claim 36, characterized in that: It also includes a support back plate, which includes a connecting portion located at the bottom of the base plate and a support portion forming an angle with the connecting portion; The support portion is used to support the back cushion; 39. A sofa according to claim 38, characterized in that: The connecting part is provided with a slot, and when the connecting part is connected to the base plate, the support foot is placed in the slot.

40. A folding sofa bed, characterized in that: It includes a first handrail, a second handrail, and an elastic pad as described in any one of claims 29-35; the base plate is divided into a fixed base plate and a movable base plate, the two sides of the fixed base plate are respectively fixedly connected to the first handrail and the second handrail, and the first handrail and the second handrail are respectively provided with folding hinges, and the two sides of the movable base plate are respectively fixedly connected to the folding hinges.

41. A sofa characterized by: Includes: sofa frame, bottom components; The bottom component includes an elastic module and a fabric cover. The fabric cover of the bottom component covers the sides and top of the elastic module, and the bottom component abuts against the sofa frame. The bottom assembly also includes a base plate for mounting the elastic module; the base plate includes an elastic fabric layer and a clamping frame arranged circumferentially along the elastic fabric layer, the clamping frame being used to clamp and fix the elastic fabric layer; the fabric sleeve and the clamping frame form a detachable connection.

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