Elastic unit, elastic module set and elastic cushion

Abstract

This application relates to an elastic unit, an elastic module set, and an elastic cushion. The elastic unit (1) includes a seat (10) and a plurality of elastic modules (11). The seat (10) has a first end (10a) and a second end (10b) opposite the first end (10a) along the length of the seat. The plurality of elastic modules (11) are installed between the first end (10a) and the second end (10b). The plurality of elastic modules (11) are removably installed on the seat (10). The bottom of the seat (10) has an opening that can fit over the top surface of an elastic module (11) of another elastic unit (1). The elastic unit (1) enables quick assembly, disassembly, and transportation of the elastic cushion, and reduces the space it occupies during storage.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority based on a Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on March 23, 2023, bearing application number 2023102900193 and entitled "Elastic Unit, Elastic Module Set, and Elastic Cushion," the contents of which are incorporated herein by reference.

[0002] The present invention relates to the furniture sector, in particular to a resilient unit, a resilient module set and a resilient cushion. [Background technology]

[0003] Furniture such as spring beds and sofa beds have become indispensable in people's lives. Current beds and sofa beds are basically equipped with elastic cushions. Because the elastic cushions have a certain degree of elasticity, they can provide a certain degree of elastic support when a user lies down on a bed or sofa bed, and provide a certain degree of comfort compared to hard cushions.

[0004] Conventional elastic cushions are typically formed by a base layer, a spring layer, a sponge layer, and side sealing covers, forming a non-detachable, integrated sealed structure. That is, the spring layer is attached to the base layer, the sponge layer is attached to the spring layer, and the side sealing covers are connected between the sponge layer and the base layer to form a sealed space. However, such elastic cushions are complicated to assemble during actual use, have poor stability, are inconvenient to handle during transportation, and require a large amount of space for storage. Summary of the Invention

[0005] SUMMARY OF THE INVENTION The object of the present invention is to provide an elastic unit, an elastic module set and an elastic cushion in order to solve the problems of the above-mentioned prior art, such as complicated assembly of the elastic cushion and poor stability.

[0006] In order to solve the above technical problems, the present invention provides the following technical aspects.

[0007] the elastic unit includes a seat portion and a plurality of elastic modules; the seat includes a first end and a second end opposite the first end along a length of the seat, and a plurality of elastic modules are disposed between the first end and the second end; The elastic modules are removably installed on the seat, and the bottom of the seat has an opening that can fit onto the top surface of an elastic module of another elastic unit.

[0008] In this technical form, the elastic modules are detachably installed on the seat, so they are neatly arranged, and the bottom where the elastic modules are located has an opening so that the elastic modules can be fitted with elastic modules of another elastic unit. This allows multiple elastic modules to be fitted with elastic modules of the same elastic unit, or with elastic modules of two elastic units located at both ends, allowing for quick installation of the elastic modules and ensuring greater overall stability after fitting. Furthermore, the elastic units can be disassembled one by one and then fitted and stacked, allowing for quick assembly, disassembly, and transportation of the elastic cushion and reducing the storage space required.

[0009] In a more preferred embodiment, the elastic module includes a spring and a flexible cover, the flexible cover having a closed end and an open end, the spring penetrates through the open end of the flexible cover and enters its interior, the flexible cover covers the outside of the spring, the open end of the flexible cover is removably fixed to the lower end of the spring to apply a predetermined initial compression force to the spring, and the top of another elastic module penetrates the open end, thereby realizing the mating of the two elastic modules.

[0010] In a more preferred embodiment, the thickness of the seat is 5 to 20 mm, and the distance between two adjacent elastic modules is in the range of 2 to 10 mm.

[0011] In a more preferred embodiment, the spring is a tapered spring.

[0012] In a more preferred embodiment, the spring is comprised of a top and a bottom, the top having a spherical structure and the bottom connected to the top having a tapered structure.

[0013] The second technical form provided by the present invention is as follows.

[0014] Elastic module set includes: The device includes two mounting units and a plurality of elastic units; The two mounting units are arranged in a parallel and regular arrangement, each including a positioning seat, the positioning seat including a first end and a second end opposite to the first end along the length of the seat, and a plurality of positioning assemblies are arranged at intervals between the first end and the second end; the number of the plurality of elastic units is equal to or less than the number of positioning assemblies located on the mounting unit, the plurality of elastic units includes a seat portion, the seat portion includes a first end and a second end opposite to the first end along a length direction of the seat portion, and a plurality of elastic modules are installed between the first end and the second end; A plurality of the elastic modules are removably mounted on the seat, and the bottom of the seat has an opening that can be fitted onto the upper surface of the positioning assembly of the mounting unit.

[0015] In a more preferred embodiment, the elastic module includes a spring and a flexible cover, the flexible cover having a closed end and an open end, the spring penetrates through the open end of the flexible cover and enters its interior, the flexible cover covering the outside of the spring, the open end of the flexible cover being removably fixed to the lower end of the spring to apply a predetermined initial compression force to the spring, and the top of another elastic module penetrates into the open end, thereby realizing the fitting of two elastic modules.

[0016] In a more preferred embodiment, the spring is a tapered spring.

[0017] In a more preferred embodiment, the spring is comprised of a top and a bottom, the top having a spherical structure and the bottom connected to the top having a tapered structure.

[0018] The third technical form provided by the present invention is as follows.

[0019] Elastic module set includes: two first elastic units and a plurality of second elastic units; The two first elastic units are arranged in parallel and in an orderly manner and include a first seat; the first seat portion includes a first end and a second end opposite the first end along a longitudinal direction of the first seat portion, and a plurality of first elastic modules are disposed between the first end and the second end; the second elastic unit includes a second seat portion; the second seat portion includes a first end and a second end opposite the first end along a longitudinal direction of the second seat portion, and a plurality of second elastic modules are disposed between the first end and the second end; A plurality of the second elastic modules are detachably installed on the second seat portion, and the bottom of the second seat portion has an opening that can be fitted onto an upper surface of the first elastic module of the first elastic unit; The number of the second elastic units is equal to or less than the number of the first elastic modules.

[0020] In a more preferred embodiment, the first elastic module includes a first spring and a first flexible cover, the first flexible cover having a first closed end and a first open end, the first spring penetrates through the first open end of the first flexible cover and enters the interior thereof, the first flexible cover covers the outside of the first spring, and the first open end of the first flexible cover is removably fixed to a lower end of the first spring, thereby applying a predetermined initial compression force to the first spring; The second elastic module includes a second spring and a second flexible cover, the second flexible cover having a second closed end and a second open end, the second spring penetrates through the second open end of the second flexible cover and enters the interior thereof, so that the second flexible cover covers the outside of the second spring, the second open end of the second flexible cover is removably fixed to the lower end of the second spring, so as to apply a predetermined initial compression force to the second spring, and the top of the first elastic module penetrates into the second open end, thereby realizing the engagement between the two.

[0021] In a more preferred embodiment, the elastic modules of each of the second elastic units that are closest to the first end and the second end of the seat portion are fitted into the opposing first elastic modules of the two first elastic units, respectively, so that the multiple second elastic units and the two first elastic units are fitted and stacked.

[0022] In a more preferred embodiment, the spring is a tapered spring.

[0023] The fourth technical aspect provided by the present invention is as follows.

[0024] The resilient cushion for furniture includes one or more of the above-mentioned resilient units.

[0025] The fifth technical aspect provided by the present invention is as follows.

[0026] Elastic cushions for furniture one or more sets of elastic modules as described above; a base cushion provided below the elastic module set; and an outer cover covering the outer surface of the elastic module set.

[0027] Other features and advantages of the invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantageous advantages of the invention will be realized and attained by the structure particularly specified in the written description, claims, and drawings. [Brief explanation of the drawings]

[0028] In the following, in order to more clearly explain the technical aspects of the embodiments of the present invention or the prior art, drawings used in the description of the embodiments or the prior art will be briefly introduced, but it is clear that the drawings in the following description are some embodiments of the present invention, and that a person skilled in the art can obtain other drawings according to these drawings without requiring creative efforts. Unless otherwise specified, the positional relationships described in the following description are all based on the orientation of the components depicted in the drawings. [Figure 1] FIG. 2 is a configuration diagram of an elastic unit provided in the first embodiment of the present invention. [Figure 2] FIG. 2 is a side view of the elastic unit provided by the first embodiment of the present invention. [Figure 2a] FIG. 3 is an enlarged view of A in FIG. 2. [Figure 3] FIG. 2 is a bottom view of the elastic unit provided by the first embodiment of the present invention. [Figure 4] FIG. 2 is a side view of an elastic module provided by an embodiment of the present invention. [Figure 5] 1 is a partial cross-sectional view of an elastic module provided by an embodiment of the present invention; [Figure 6] FIG. 2 is a partial cross-sectional view of another elastic module provided by an embodiment of the present invention. [Figure 7]FIG. 10 is a configuration diagram of an elastic module set provided by a second embodiment of the present invention. [Figure 8] FIG. 10 is an assembly diagram of an elastic module set provided by a second embodiment of the present invention. [Figure 9] FIG. 10 is a configuration diagram of the elastic module set provided by the second embodiment of the present invention in an assembled state. [Figure 10] FIG. 10 is a bottom view of the elastic module set according to the second embodiment of the present invention in an assembled state. [Figure 11] FIG. 10 is a configuration diagram of an elastic module set provided by a third embodiment of the present invention. [Figure 12] FIG. 10 is an assembly diagram of an elastic cushion provided by a fifth embodiment of the present invention. [Figure 13] FIG. 10 is an assembly diagram of an elastic cushion provided by a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0029] In order to clarify the objectives, technical aspects and advantages of the embodiments of the present invention, the technical aspects of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is clear that the described embodiments are only a part of the embodiments of the present invention, and not all of them. The technical features devised in the different embodiments of the present invention described below can be combined with each other as long as they are not inconsistent with each other. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without requiring creative efforts all fall within the protection scope of the present invention.

[0030] In addition, all terms used in the description of the present invention (including technical and scientific terms) have the same meaning as commonly understood by a person skilled in the art to which the present invention belongs, and should not be interpreted as limiting the present invention. The terms used in this specification are consistent with the meaning of those terms in this specification and related fields, and should not be interpreted in an idealized or overly formal sense unless otherwise specified in the present specification.

[0031] 1 to 3, a first embodiment of the present invention provides an elastic unit 1. The elastic unit 1 includes a seat 10 and a plurality of elastic modules 11, wherein the seat 10 includes a first end 10a and a second end 10b opposite the first end 10a along the length direction of the seat 10, and the plurality of elastic modules 11 are installed between the first end 10a and the second end 10b, and the plurality of elastic modules 11 are detachably installed on the seat 10, and the bottom of the seat 10 has an opening that can be fitted onto the upper surface of an elastic module of another elastic unit.

[0032] In this technical form, the elastic modules 11 are detachably installed on the seat 10, so that the elastic modules 11 are neatly arranged, and an opening is provided at the bottom where the elastic modules 11 are located, allowing the elastic modules 11 to be interlocked with the elastic modules of another elastic unit. This allows multiple elastic modules 11 to be interlocked with the elastic modules of the same elastic unit, or with the elastic modules of two elastic units located at both ends, enabling quick installation of the elastic modules and ensuring greater overall stability after interlocking. Furthermore, the elastic units 11 can be disassembled and then interlocked to form a stacked arrangement, allowing for quick disassembly, assembly, and transportation of the elastic cushion, and reducing the storage space required.

[0033] 4 and 5, in one or more embodiments of the present invention, the elastic module 11 includes a spring 111 and a flexible cover 112. The flexible cover 112 has a closed end 112a and an open end 112b, the spring 111 penetrates through the open end 112b of the flexible cover 112 and enters the interior thereof, so that the flexible cover 112 covers the outside of the spring 111, the open end 112b of the flexible cover 112 is removably fixed to the bottom end of the spring 111 to apply a predetermined initial compression force to the spring 111, and the top of another elastic module enters the open end 112b to realize the fitting of the two elastic modules. Because the elastic module 11 has a flexible cover 12 positioned outside the springs 111, the springs 111 in the elastic module 11 are less likely to become entangled with the springs or other components in adjacent elastic modules, whether assembled into an elastic cushion or stacked together. Compared to a single spring, the elastic module 11 has a seat 10, which provides a larger load area and greater stability, making the elastic cushion more stable during use. Furthermore, by adjusting the pressure of the springs 11 in the flexible cover 12 as needed, the initial pressure of the springs 111 in a given elastic module 11 can be predetermined, allowing the elastic module 11 to have the required stiffness. Furthermore, elastic modules 11 with different stiffness can be installed in different parts of the elastic cushion as needed, thereby truly realizing independent compression and release of the elastic modules 11 within the elastic cushion. Furthermore, the flexible cover 12 can also exert a certain positional restriction effect on the spring 111, preventing the spring 111 from rattling in the horizontal direction of the seat, thereby effectively improving the stability of the spring 111 when placed in the elastic cushion and subjected to pressure, and providing better comfort to the elastic cushion. The elastic cushion of the present invention provides better comfort than conventional spring mattresses.

[0034] 2 and 2a, in one or more embodiments of the present invention, the thickness h of the seat 10 is 5 to 20 mm, and the distance d between two adjacent elastic modules is in the range of 2 to 10 mm. By adopting the above-mentioned dimensional parameters, when the elastic units 10 are interlocked, the elastic modules 11 located in different elastic units 10 can be interlocked more stably.

[0035] In one or more embodiments of the present invention, referring to FIG. 5, the spring 111 is a tapered spring with better extension elasticity.

[0036] In one or more embodiments of the present invention, referring to Figure 6, the spring has a spherical top and a tapered bottom. This structure allows the tapered bottom of the spring 11 to have a larger base area, allowing for more stable placement, and the tapered structure provides stronger support, effectively increasing the stiffness of the lower back. The spherical top of the spring 11 is easily compressed, providing a good elastic feel and partially replacing the function of a highly elastic sponge layer.

[0037] 7 to 10, the elastic module set 2 provided in the second embodiment of the present invention includes two mounting units 21 and a plurality of elastic units 22. As shown in FIG.

[0038] The two mounting units 21 are installed parallel and symmetrically, and each mounting unit 21 includes a positioning seat 211, the positioning seat 211 including a first end 211a and a second end 211b opposite to the first end 211a along the length direction of the seat, and a plurality of positioning assemblies 212 are installed at intervals between the first end 211a and the second end 211b; the number of the elastic units 22 is equal to or less than the number of the positioning assemblies 212 located in the mounting unit 21, the elastic unit 22 includes a seat 221, the seat 221 includes a first end 221a and a second end 221b opposite to the first end 221a along the length direction of the seat 221, and a plurality of elastic modules 222 are installed between the first end 221a and the second end 221b; A plurality of the elastic modules 222 are detachably installed on the seat 221 , and the bottom of the seat 221 has an opening that can be fitted onto the upper surface of the positioning assembly 212 of the mounting unit 21 .

[0039] In one or more embodiments of the present invention, the elastic module 222 includes a spring and a flexible cover having a closed end and an open end, the spring penetrates through the open end of the flexible cover to enter the interior thereof, the flexible cover covers the outside of the spring, the open end of the flexible cover is removably fixed to the lower end of the spring to apply a predetermined initial compression force to the spring, and the positioning assembly 212 of the mounting unit 21 penetrates the open end to fit the elastic module 222 to the mounting unit 21.

[0040] In this technical form, to hold the elastic modules in the elastic cushion in the appropriate position, the elastic modules 222 of each elastic unit 22 are fitted into the positioning assembly 212 of the mounting unit 21, thereby realizing quick assembly of the two and thereby realizing orderly arrangement of the two and preventing undesired uneven elasticity in different areas after mounting on the elastic cushion due to irregular spring arrangement. Moreover, by mounting multiple elastic units 22 one by one on the positioning assembly 212 of the mounting unit 21, an elastic cushion with the same horizontal height is formed, which improves the stability of the elastic cushion when pressure is applied and makes the elastic cushion more comfortable.

[0041] In particular, in the seat portion 221 of each elastic unit 22, the elastic modules 222 closest to the first end 221a and the second end 221b of the seat portion 221 are respectively fitted into the opposing positioning assemblies 212 of the mounting unit 21, thereby stacking and fitting the multiple elastic units 22 and the two mounting units 21.

[0042] In this technical form, two parallel and symmetrically installed mounting units 21 are used to arrange multiple elastic units 22 between the two mounting units 21, thereby fixing the positions of the multiple elastic units 22 and fixing the positions of the elastic modules 222 located on the seat 221, so that the elastic cushion has excellent stability and better comfort when pressure is applied at any position. Due to the mounting units 21, the elastic modules 222 located at the first end 221a and the second end 221b of the elastic unit 22 appear higher than the elastic module 222 located in the middle. Therefore, when used on an elastic cushion, a sleeping user is more likely to sleep in the middle area due to the difference in horizontal height, and is prevented from falling off the elastic cushion.

[0043] In one or more embodiments of the present invention, referring to FIG. 5, the spring is a tapered spring with excellent extension elasticity.

[0044] In one or more embodiments of the present invention, as shown in Figure 6, the spring is composed of a top and a bottom, with the top being spherical and the bottom connected to the top being tapered. With this structure, the tapered bottom of the spring 11 has a large base area, allowing for stable placement, and the tapered structure provides stronger support, effectively increasing the stiffness of the lower back. The top of the spring 11 is spherical, making it easier to compress, providing a good elastic feel and partially replacing the function of a highly elastic sponge layer.

[0045] Referring to FIG. 11 , the elastic module set 3 provided by the third embodiment of the present invention includes two first elastic units 31 and a plurality of second elastic units 32; The two first elastic units 31 are balanced and symmetrically installed, and the first elastic unit 31 includes a first seat 311, and the first seat 311 includes a first end 311a and a second end opposite to the first end along the length direction of the first seat 311, and a plurality of first elastic modules 312 are installed between the first end and the second end; The second elastic unit 32 includes a second seat 321, the second seat 321 including a first end 321a and a second end 321b facing the first end 321a along the length direction of the second seat 321, and a plurality of second elastic modules 322 are installed between the first end 321a and the second end 321b; a plurality of second elastic modules 322 are detachably installed on the second seat 321, and the bottom of the second seat 321 has openings that can be fitted onto the upper surfaces of the first elastic modules 312 of the first elastic unit 31; Wherein, the number of the second elastic units 32 is equal to or less than the number of the first elastic modules 312 .

[0046] In one or more embodiments of the present invention, the first elastic module 312 includes a first spring and a first flexible cover, the first flexible cover having a first closed end and a first open end, the first spring penetrates through the first open end of the first flexible cover and enters the inside thereof, the first flexible cover covers the outside of the first spring, and the first open end of the first flexible cover is removably fixed to a lower end of the first spring, thereby applying a predetermined initial compression force to the first spring; The second elastic module 322 includes a second spring and a second flexible cover, the second flexible cover having a second closed end and a second open end, the second spring penetrates through the second open end of the second flexible cover and enters the interior thereof, so that the second flexible cover covers the outside of the second spring, the second open end of the second flexible cover is removably fixed to the lower end of the second spring, so as to apply a predetermined initial compression force to the second spring, and the top of the first elastic module penetrates into the second open end, so that the two are fitted together.

[0047] In this technical form, the first elastic unit 31 and the second elastic unit 32 may be the same elastic unit, and these elastic units can be removed one by one and then stacked together, which makes it easy to assemble, disassemble, and transport the elastic cushion and reduces the space required for storage.Of course, the first elastic unit 31 and the second elastic unit 32 may be different elastic units, and the dimensions of the assembled elastic cushion can be controlled by adjusting the dimensions of each elastic unit.

[0048] In a more preferred embodiment, the elastic modules of each of the second elastic units that are closest to the first end and the second end of the seat are respectively fitted to the opposing first elastic modules of the two first elastic units, thereby stacking and fitting the plurality of second elastic units and the two first elastic units.

[0049] In a more preferred embodiment, the spring is a tapered spring having excellent extension elasticity.

[0050] A fourth embodiment of the present invention provides a resilient cushion for furniture, which includes one or more of the above-described resilient units.

[0051] Referring to FIG. 12 , a fifth embodiment of the present invention provides an elastic cushion 4 for furniture. The elastic cushion includes one or more of the above-described elastic module sets 41, wherein the springs 11 used in the elastic module sets 41 have different shapes at the top and bottom, with the top being spherical and the bottom connected to the top being tapered. The elastic module sets 41 further include sub-springs 6 inserted between the main springs 11. Preferably, the sub-springs 6 are inserted between four main springs, or a connecting member is used to connect the middle portion of the sub-spring to one of the main springs. Such an elastic module set 41 provides sufficient elastic support and minimizes gaps between the springs. Therefore, the sub-springs 6 may be replaced with plastic elastic structures, etc.

[0052] The base cushion 42 is provided below the elastic module set 41, The outer cover 43 covers the outer surface of the elastic module set 41, When in use, the elastic cushion can be quickly assembled by fitting the elastic module set 41 together, fixing the fitted elastic module set 41 to the base cushion 42 using fasteners or snap connection members, etc., and covering the outside of the elastic module set 41 with the outer layer cover 43.

[0053] When used as a temporary mattress for camping, student dormitories, offices, or at home when guests visit, the elastic mat can more significantly exhibit its advantages of low cost, ease of transportation and assembly, and small storage space.

[0054] Referring to FIG. 13, the furniture elastic cushion 5 provided by the sixth embodiment of the present invention includes one or more of the above-mentioned elastic module sets 51, wherein the spring used in the elastic module set 51 is configured with a top and a bottom, the top has a spherical structure, and the bottom connected to the top has a tapered structure; An outer cover 52 covers the outer surface of the elastic module set 51, When in use, the elastic cushion can be quickly assembled by fitting the elastic module set 51 together and covering the exterior with the outer cover 52.

[0055] Furthermore, it should be understood by those skilled in the art that although there are many problems in the prior art, each embodiment or technical form of the present invention does not necessarily solve all of the technical problems listed in the prior art or background art, but may improve only one or several aspects. It should be understood by those skilled in the art that anything not mentioned in a claim should not be considered a limitation on the claim.

[0056] In this specification, terms such as elastic unit, elastic module, elastic module set, seat, flexible cover, first end, second end, closed end, open end, outer layer cover, and base cushion are frequently used, but are not intended to exclude the use of other terms. These terms are used to more easily explain and interpret the essence of the present invention, and any interpretation of them as additional limitations would be contrary to the spirit of the present invention. Terms such as "first" and "second" in the specification of the embodiments of the present invention, the claims, and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or priority.

[0057] Finally, the above embodiments are merely used to explain the technical aspects of the present invention, and are not intended to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it should be understood that those skilled in the art can still make modifications to the technical aspects described in the above embodiments, or make equivalent substitutions for part or all of the technical features. Such modifications or substitutions do not cause the corresponding technical aspects to depart from the scope of the technical aspects of the embodiments of the present invention.

[0058] The present invention relates to furniture, and more particularly to an elastic unit, an elastic module set, and an elastic cushion. The elastic unit includes a seat and a plurality of elastic modules. The seat has a first end and a second end opposite the first end along the length of the seat. The elastic modules are installed between the first and second ends and are detachably installed on the seat. The seat bottom has openings that can be fitted onto the upper surfaces of the elastic modules of another elastic unit. The elastic unit allows for quick disassembly, assembly, and transportation of the elastic cushion, and reduces the storage space required, making it industrially practical.

Claims

1. An elastic unit, a seat portion and a plurality of resilient modules; the seat includes a first end and a second end opposite the first end along a length of the seat, and a plurality of elastic modules are disposed between the first end and the second end; The elastic unit is characterized in that the multiple elastic modules are detachably installed on the seat, and the bottom of the seat has an opening that can be fitted onto the upper surface of an elastic module of another elastic unit.

2. 2. The elastic unit of claim 1, wherein the elastic module includes a spring and a flexible cover, the flexible cover having a closed end and an open end, the spring penetrates through the open end of the flexible cover to enter the interior thereof, the flexible cover covering the outside of the spring, the open end of the flexible cover being removably fixed to the lower end of the spring to apply a predetermined initial compression force to the spring, and the top of another elastic module penetrates into the open end, thereby fitting the two elastic modules together.

3. 2. The elastic unit according to claim 1, wherein the thickness of the seat is 5 to 20 mm, and the distance between two adjacent elastic modules is in the range of 2 to 10 mm.

4. The elastic unit according to claim 1 , wherein the spring is a tapered spring.

5. The elastic unit according to claim 1 , wherein the spring is composed of a top and a bottom, the top having a spherical structure, and the bottom connected to the top having a tapered structure.

6. 1. A set of elastic modules, two attachment units and a plurality of elastic units; the two mounting units are arranged in a parallel order, each including a positioning seat, the positioning seat having a first end and a second end opposite the first end along a length direction of the seat, and a plurality of positioning assemblies are arranged at intervals between the first end and the second end; the number of the plurality of elastic units is equal to or less than the number of positioning assemblies located on the mounting unit, the plurality of elastic units includes a seat portion, the seat portion includes a first end and a second end opposite to the first end along a length direction of the seat portion, and a plurality of elastic modules are installed between the first end and the second end; The elastic modules are detachably installed on the seat, and the bottom of the seat has an opening that can be fitted into the upper surface of the positioning assembly of the mounting unit.

7. 1. A set of elastic modules, two first elastic units and a plurality of second elastic units; The two first elastic units are arranged in parallel and in an orderly manner, and each include a first seat; the first seat portion includes a first end and a second end opposite the first end along a longitudinal direction of the first seat portion, and a plurality of first elastic modules are disposed between the first end and the second end; the plurality of second elastic units include second seats; the second seat portion includes a first end and a second end opposite the first end along a length of the second seat portion, and a plurality of second elastic modules are disposed between the first end and the second end; a plurality of second elastic modules are detachably installed on the second seat portion, and a bottom portion of the second seat portion has an opening that can be fitted onto an upper surface of the first elastic module of the first elastic unit; The elastic module is characterized in that the number of the second elastic units is equal to or less than the number of the first elastic modules.

8. 8. The elastic module set according to claim 7, wherein the elastic modules of each of the second elastic units closest to the first end and the second end of the seat are fitted to the first elastic modules opposite the two first elastic units, respectively, thereby stacking and fitting the plurality of second elastic units and the two first elastic units.

9. A resilient cushion for furniture, characterized in that it comprises one or more resilient units according to any one of claims 1 to 6.

10. A resilient cushion for furniture, comprising: one or more sets of elastic modules according to any one of claims 7 to 9; a base cushion provided below the elastic module set; and an outer cover covering the outer surface of the elastic module set.

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