Elastic cushion

Abstract

An elastic cushion comprises one or more elastic modules and a bottom layer arranged below the elastic modules, and each elastic module comprises a plurality of pre-compression springs. A connecting piece is arranged in the middle of each pre-compression spring, adjacent pre-compression springs are connected in the middle, the pre-compression springs are connected to the lap joint pieces through the connecting pieces, the lap joint pieces are connected with the adjacent pre-compression springs, and the bottom faces of the pre-compression springs are connected with the bottom layer.

Description

Technical Field

[0001] The present invention relates to the field of furniture, and particularly to an elastic pad. Background Art

[0002] In modern life, a mattress is an essential piece of furniture in people's bedding. Especially with the increasing life pressure of people, in order to relax during sleep, elastic mattresses with elastic components in the middle are becoming more and more popular among people. The soft pads, elastic components, and bases of existing elastic pads such as mattresses with elastic components are often integrally formed. The upper ends of the springs are connected together, resulting in the elastic pad driving the surrounding elastic components to be compressed simultaneously when the elastic pad is locally compressed. Therefore, the existing elastic pad cannot adjust the force-bearing range of the elastic components according to the posture of the human body on the elastic pad, and the elastic pad cannot adjust the force according to the sleeping position of a person, making the elastic pad conform to the human body curve and be more soft and comfortable. At the same time, during long-term use, the elasticity of the springs may change, and bacteria and mites may also breed on the elastic pad. The upper cushion layer and the base of the elastic pad are integrally formed with the elastic components, and it will be impossible to judge the usage situation and wear degree of the mattress during use, and clean and replace the components of the elastic pad such as the upper cushion layer, springs, bases, etc. in a timely manner according to the usage situation and wear degree, so that the elastic pad remains comfortable and soft. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide an elastic pad, in which the springs can adjust the force according to the posture of the human body, so that the elastic pad conforms to the human body curve, making the elastic pad more ergonomic, soft and comfortable.

[0004] To solve the above technical problem, the present invention provides an elastic pad, which includes one or more elastic modules and a bottom layer provided below the elastic modules. The elastic modules include a plurality of pre-compressed springs; a connecting member is provided in the middle of the pre-compressed springs, and a lapping member is further included. Adjacent pre-compressed springs are connected in the middle, and are connected to the lapping member by the connecting member. The lapping member connects adjacent pre-compressed springs, and the bottom surface of the pre-compressed springs is connected to the bottom layer.

[0005] In some embodiments, the connecting member includes a connecting seat, the connecting seat is provided with a first connecting structure, the lapping member is provided with a second connecting structure, and the first connecting structure is connected to the second connecting structure to realize the connection between the connecting member and the lapping member.

[0006] In some embodiments, the connecting seat is provided with a plug as the first connecting structure, the lapping member is provided with a socket as the second connecting structure, and the plug and the socket are male-female connected to realize the connection between the connecting member and the lapping member.

[0007] In some of these embodiments, the connecting member includes a connecting base, the connecting base is provided with a protrusion as the plug-in member, the overlapping member is provided with a groove as the socket, and the protrusion and the groove are in limit fit.

[0008] In some of these embodiments, the protrusions are evenly arranged around the connecting base.

[0009] In some of these embodiments, the grooves are arranged around the overlapping member.

[0010] In some of these embodiments, the overlapping member includes a fixed base and knobs connected to the periphery of the fixed base. The knobs are provided with the grooves that cooperate with the protrusions. The protrusions are snapped into the grooves and the knobs are rotated to lock the protrusions, thereby realizing the connection between the connecting member and the overlapping member.

[0011] In some of these embodiments, the overlapping members connect the pre-compressed springs on the outer periphery of the elastic module, or the connecting members are buckled to each other.

[0012] In some of these embodiments, the connecting member includes a detachable two-piece or multi-piece connecting member assembly that is snapped onto the waist of the pre-compressed spring.

[0013] In some of these embodiments, the two-piece or multi-piece connecting member assemblies of the connecting member are buckled to each other.

[0014] In some of these embodiments, it further includes an upper cushion layer, which is disposed above the elastic module, or covers the upper part and the periphery of the elastic module.

[0015] In some of these embodiments, the upper cushion layer is detachably connected to the pre-compressed springs of the outermost elastic module.

[0016] In some of these embodiments, the periphery of the upper cushion layer is provided with a plurality of fastening strips, and the fastening strips are detachably buckled and connected to the connecting members or overlapping members of the pre-compressed springs located on the outer periphery of the elastic module.

[0017] In some of these embodiments, the upper cushion layer is an integrally formed complete upper cushion layer, or is formed by combining a plurality of upper cushion layers with different hardnesses.

[0018] In some of these embodiments, the bottom layer is formed by detachably splicing a plurality of bottom layer units, or is integrally formed.

[0019] In some of these embodiments, the plurality of bottom layers are detachably spliced to form a base for the elastic module.

[0020] In some of these embodiments, the plurality of bottom layer units or the plurality of bottom layers are connected by a third member.

[0021] In some of these embodiments, the third piece is a connecting knob, and a pair of symmetrical T-shaped feet are provided at the bottom of the connecting knob. A slide rail connected to the T-shaped feet is provided on the outer periphery of the bottom layer unit or the bottom layer, and the width of the slide rail gradually narrows along the rotation direction of the connecting knob. The connecting knob is snapped into the wide part of the slide rail between two adjacent bottom layer units or the bottom layer, and the connecting knob is rotated until the T-shaped feet are limited by the narrow part of the slide rail to realize the connection between two adjacent bottom layer units or the bottom layer.

[0022] In some of these embodiments, the pre-compressed spring is connected to the bottom layer through the fixing member.

[0023] In some of these embodiments, at least part of the fixing member is provided on the bottom layer.

[0024] In some of these embodiments, the fixing member is a positioning protrusion provided on the bottom layer unit. A concave cavity structure that is in limit fit with the positioning protrusion is provided on the lower end surface of the pre-compressed spring. The positioning protrusion and the concave cavity structure are connected in a male-female manner to realize the connection between the pre-compressed spring and the bottom layer.

[0025] In some of these embodiments, the bottom layer is formed of a rigid substrate or a flexible substrate.

[0026] In some of these embodiments, the pre-compressed spring can be compressed to a locked state.

[0027] In some of these embodiments, the pre-compressed spring includes a top cover, a bottom cover, a spring is provided between the top cover and the bottom cover, a clamping structure is provided between the top cover and the bottom cover, and the top cover and the bottom cover are snap-connected through the clamping structure to compress the pre-compressed spring to the locked state.

[0028] In some of these embodiments, a first clamping structure is provided on the lower end surface of the top cover, a second clamping structure is provided on the upper end surface of the bottom cover, and the first clamping structure and the second clamping structure are detachably snap-connected; the first clamping structure and the second clamping structure are snapped together to compress the pre-compressed spring, and are disassembled from each other to release the pre-compressed spring.

[0029] In some of these embodiments, a concave cavity structure is provided on the lower end surface of the bottom cover of the pre-compressed spring, and the bottom cover is the top surface of the concave cavity structure.

[0030] In some of these embodiments, the second clamping structure is a convex edge on the top surface of the concave cavity structure, and the convex edge is discontinuous.

[0031] The present invention also provides an application of an elastic pad. The above elastic pad is applied to sofas, mattresses, and upholstered stools.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The elastic pad provided by the present invention has the upper ends of the pre-compressed springs that make up the elastic module independent, enabling the springs of the elastic pad to conform to the human curve according to the force of the human posture, making the elastic pad softer and more comfortable.

[0034] 2. The elastic pad provided by the present invention has the upper cushion layer detachably connected to the elastic module and disposed above the elastic module, capable of timely judging the usage condition of the elastic pad during use and performing cleaning and replacement.

[0035] 3. The elastic pad provided by the present invention has the pre-compressed spring that can be compressed to a locked state. When transporting or handling the elastic pad, the removed pre-compressed spring can save transportation space and is convenient for handling after being compressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the elastic pad for Embodiment 1;

[0037] Figure 2 Schematic diagram of the pre-compressed spring for Embodiment 1;

[0038] Figure 3 Schematic diagram of the connecting member for Embodiment 1;

[0039] Figure 4 Schematic diagram of the overlapping member for Embodiment 1;

[0040] Figure 5 Schematic diagram of the connection relationship for Embodiment 1;

[0041] Figure 6 Virtual physical diagram of the elastic module for Embodiment 1;

[0042] Figure 7 Virtual physical schematic diagram of the convex being inserted into the overlapping member for Embodiment 1;

[0043] Figure 8 Virtual physical schematic diagram of the locking convex connection of the overlapping member for Embodiment 1;

[0044] Figure 9 Virtual physical schematic diagram of the connection relationship for Embodiment 1;

[0045] Figure 10 Schematic diagram of the connection between the buckle strip and the elastic module for Embodiment 1;

[0046] Figure 11 Schematic diagram of the buckle strip and the three-way overlapping member for Embodiment 1;

[0047] Figure 12 Schematic diagram of the connection of the outermost pre-compressed spring of the elastic pad for Embodiment 1;

[0048] Figure 13 Virtual physical schematic diagram of the connection between the buckle strip and the elastic module for Embodiment 1;

[0049] Figure 14 Schematic diagram of the connection between the elastic module and the base;

[0050] Figure 15 Schematic diagram of the splicing base of the bottom layer unit of the 8-bit seat;

[0051] Figure 16 Partial view of the base with positioning protrusions provided on the entire bottom layer;

[0052] Figure 17 Partial view of the base with positioning protrusions provided on the periphery of the bottom layer;

[0053] Figure 18 Schematic diagram of the positioning protrusion;

[0054] Figure 19 Schematic diagram of the connecting knob;

[0055] Figure 20 Schematic diagram of the splicing base of the bottom layer unit of the 5-bit seat;

[0056] Figure 21 Schematic diagram of the splicing base of the bottom layer units of the 5-bit seat and the 1-bit seat;

[0057] Figure 22 Schematic diagram of the bottom layer unit of the 5-bit seat;

[0058] Figure 23 Schematic diagram of the bottom layer unit of the 8-bit seat;

[0059] Figure 24 Schematic diagram of the bottom layer unit of the 3-bit seat;

[0060] Figure 25 Schematic diagram of the bottom layer unit of the 1-bit seat;

[0061] Figure 26 Virtual physical diagram of the base;

[0062] Figure 27 Virtual physical diagram of the disassembled state of the base;

[0063] Figure 28 Schematic diagram of the released state of the pre-compressed spring;

[0064] Figure 29 Schematic diagram of the compressed state of the pre-compressed spring. Specific implementation manner

[0065] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the preferred embodiments of the present invention and should not be regarded as excluding other embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0066] Embodiment 1

[0067] Refer to Figure 1-13 : This embodiment provides an elastic pad, which includes a plurality of elastic modules 1, an upper cushion layer 2 arranged above the elastic module 1, and a bottom layer 3 arranged below the elastic module 1 for connecting the pre-compressed spring 10. The elastic module 1 is composed of a plurality of pre-compressed springs 10; a connecting piece 11 is arranged in the middle of the pre-compressed spring 10, and a lapping piece 12 is further included. Adjacent pre-compressed springs 10 are connected in the middle and are connected to the lapping piece 12 by the connecting piece 11, and the lapping piece 12 connects adjacent pre-compressed springs 10.

[0068] More specifically, in this embodiment, the connecting piece 11 is divided into two detachable connecting piece components 11.1 and 11.2, which are buckled with each other to form a ring and are clamped at the waist of the pre-compressed spring 10. The connecting piece 11 includes a connecting seat 11.3, and T-shaped protrusions 11.4 are uniformly arranged around the connecting seat as plug-in parts. The T-shaped protrusions 11.4 of different pre-compressed springs 10 are lapped through the lapping piece 12 to realize the connection of adjacent pre-compressed springs 10.

[0069] The lapping piece 12 in this embodiment includes a fixed seat 12.1 and knobs 12.2 connected to the periphery of the fixed seat. Grooves 12.3 serving as sockets for limit cooperation with the T-shaped protrusions 11.4 are arranged on all four knobs 12.2. The knob 12.2 can rotate around the groove 12.3. The T-shaped protrusion 11.4 on the pre-compressed spring connecting piece is inserted into the groove 12.3 on the lapping piece knob. At this time, the T-shaped protrusion 11.4 and the groove are in horizontal limit cooperation. Rotate the knob 12.2 until the T-shaped protrusion 11.4 and the knob 12.2 are in vertical limit cooperation. At this time, the knob 12.2 locks the T-shaped protrusion 11.4 to realize the connection between the pre-compressed springs 10.

[0070] When connecting the pre-compressed springs 10, insert the T-shaped protrusion 11.4 into the groove 12.3 on the lapping piece 12. At this time, as Figure 7 shown, the T-shaped protrusion 11.4 and the groove 12.3 are in horizontal limit cooperation. Rotate the knob 12.2 until as Figure 8As shown, the knob 12.2 and the T-shaped protrusion 11.4 are in vertical limit fit, and the knob 12.2 locks the T-shaped protrusion 11.4 to achieve the connection between adjacent pre-compressed springs 10. When disassembling the pre-compressed spring 10, rotate the knob 12.2 to release the vertical limit fit with the T-shaped protrusion 11.4, and take out the T-shaped protrusion 11.4 to release the connection between adjacent pre-compressed springs 10.

[0071] In this embodiment, each lap joint 12 has four knobs 12.2. Each lap joint 12 can connect the connectors 11 on four pre-compressed springs. The other T-shaped protrusions 11.4 on these four pre-compressed spring connectors are connected to another lap joint 12, and so on, and the pre-compressed springs 10 are connected to form an elastic module 1.

[0072] In this embodiment, the outermost pre-compressed spring 10 of the elastic module 1 and the outermost pre-compressed spring 10 of another elastic module 1 are also connected using the above lap joint 12. As a simple replacement for this embodiment, the outermost pre-compressed spring 10 of the elastic module 1 and the outermost pre-compressed spring 10 of another elastic module 1 can also be buckled to each other through the connectors.

[0073] In order to be able to judge the usage condition and cleaning degree of the elastic pad during use, and clean or replace parts of the elastic pad in a timely manner according to the usage condition. In this embodiment, the upper cushion layer 2 is arranged above the elastic module 1, and the pre-compressed spring 10 is exposed outside. The elastic pad has an open structure, and users can visually judge the cleaning degree of the elastic pad and the wear degree of the spring during use in a timely manner.

[0074] To facilitate users to clean and replace parts of the elastic pad, as Figure 10-13 shown, in this embodiment, a buckle strip 20 is arranged around the upper cushion layer 2. The buckle strip 20 is buckled with the lap joint 13 connecting the outermost pre-compressed spring of the elastic pad to achieve the detachable connection between the upper cushion layer 2 and the elastic module 1.

[0075] In this embodiment, the pre-compressed springs 10 on the outermost periphery of the elastic pad do not need to be connected to other elastic modules 1. Therefore, the adjacent pre-compressed springs 10 on the outermost periphery of the elastic pad and the snap strips 20 of the upper cushion layer 2 are connected by a three-way lap joint 13. The lap joint 13 includes a fixed seat 13.1 and three knobs 13.2 identical to the above-mentioned knobs 12.2. Grooves 13.3 are provided on the knobs 13.2. The T-shaped protrusions 11.4 on the adjacent pre-compressed spring connectors on the outermost periphery of the elastic pad and the T-shaped protrusions 20.1 on the snap strips are respectively snapped into the three grooves 13.3 of the three-way lap joint 13. Rotating the knob 13.2 to lock the T-shaped protrusion 20.1 realizes the connection and fixation of the pre-compressed springs 10 on the outermost periphery of the elastic pad and the fixation of the upper cushion layer 2 and the elastic module 1. As a simple alternative to this embodiment, grooves can also be provided on the snap strips 20 to be directly connected to the protrusions of the connectors.

[0076] In this embodiment, in order to meet the different needs of users for the softness of the elastic pad, the upper cushion layer 2 is formed by combining multiple upper cushion layers with different softness and hardness. Users can select the upper cushion layers with corresponding hardness according to their actual needs and preferences for the softness of the upper cushion layer, and form the upper cushion layer 2 suitable for themselves. The surface of the upper cushion layer 2 can also adopt various materials such as genuine leather, ultra-fine fiber, cotton cloth, and wool. As a simple alternative to this embodiment, the upper cushion layer 2 can also be integrally formed.

[0077] Refer to Figure 14-27 , in this embodiment, the bottom layer 3 is formed by splicing multiple bottom layer units 30. In order to enable the pre-compressed springs 10 to be connected to the bottom layer 3, positioning protrusions 31 are provided on the bottom layer 3 as fixing parts, and concave cavity structures 102.2 for limit cooperation with the positioning protrusions are provided on the lower end surfaces of the pre-compressed springs 10. The pre-compressed springs 10 are connected to the bottom layer 3 through the male-female connection of these positioning protrusions 31 and the concave cavity structures 102.2.

[0078] The bottom layer 3 is formed by splicing multiple bottom layer units 30 through connection knobs 32 to form the size of the elastic module 1. The connection knob 32 is a circular knob, and two symmetric T-shaped feet 32.1 are provided at the bottom thereof. Slide rails 30.1 for limit cooperation with the T-shaped feet 32.1 of the connection knob 32 are provided at the edges of the bottom layer units. The width of the slide rails 30.1 gradually narrows along the rotation direction of the knob. The two T-shaped feet 32.1 of the connection knob 32 are respectively snapped into the wide parts of the slide rails 30.1 of two adjacent bottom layer units 30, and by holding the handle on the connection knob 32 and rotating the connection knob 32 until the feet 32.1 are limited by the narrow parts of the slide rails 30.1, the connection of adjacent bottom layer units 30 is realized.

[0079] As a simple alternative to this embodiment, the bottom layer 3 can also be integrally formed to the size of the elastic module 1. At the same time, since the pre-compressed springs 10 inside the elastic module 1 are interconnected, the positioning protrusions 31 can be provided only on the bottom layer units 30 on the outer periphery of the bottom layer 3.

[0080] In this embodiment, the elastic pad is composed of a plurality of spliced elastic modules 1. The bottom layers 3 connecting the pre-compressed springs 10 are detachably connected through the above-mentioned connecting knobs 32 to form a base for connecting the elastic modules 1. This allows users to select a certain number of elastic modules 1 and detachably connected bottom layers 3 according to actual size requirements for splicing to form an elastic pad.

[0081] The size of the bottom layer unit 30 can be set arbitrarily. One bottom layer unit 30 can be connected to one pre-compressed spring 10 or multiple pre-compressed springs 10. The bottom layer 3 can be formed by splicing bottom layer units 30 of different sizes through the connecting knobs 32, or can also be formed by splicing bottom layer units 30 of the same size through the connecting knobs 32. As a simple alternative to this embodiment, the bottom layer units 30 and the bottom layers 3 can also be detachably connected by means such as plugging and hinges.

[0082] Specifically, the bottom layer 3 can be formed by splicing a plurality of bottom layer units 30 with 8-bit seats and bottom layer units 30 with 4-bit seats, or can also be formed by splicing a plurality of bottom layer units 30 with 5-bit seats, or can also be formed by splicing a plurality of bottom layer units 30 with 1-bit seats and a plurality of bottom layer units 30 with 5-bit seats. The number of bit seats on the bottom layer unit 30 and the splicing combination are not limited to those mentioned in this embodiment.

[0083] In this embodiment, the bottom layer 3 connecting the pre-compressed springs 10 is composed of a rigid substrate, and the rigid substrate can be formed of rigid materials such as wooden boards and plastic suction boards. As a simple alternative to this embodiment, the bottom layer 3 can also be composed of a flexible substrate.

[0084] Refer to Figure 28-29, in this embodiment, in order to facilitate the transportation or handling of the elastic pad after disassembly, the pre-compressed spring can be compressed to a locked state. The height of the spring compressed to the locked state is greatly reduced, and the occupied space is reduced, which is convenient for transportation and handling. More specifically, the pre-compressed spring includes a top cover 101 and a bottom cover 102. A first clamping structure 101.1 is provided on the top cover 101, and a second clamping structure 102.1 is provided on the bottom cover 102. The first clamping structure 101.1 and the second clamping structure 102.1 are detachably clamped; a cavity structure 102.2 that is in limit fit with the positioning protrusion is provided on the lower end surface of the bottom cover 102 of the pre-compressed spring. The bottom cover 102 is the top surface 102.2 of the cavity structure, and the second clamping structure 102.1 is a convex edge provided on the outer periphery of the upper end of the cavity structure 102.2 of the pre-compressed spring and is discontinuous; use an external force to compress the pre-compressed spring 10 until the hook of the first clamping structure 101.1 and the convex edge of the second clamping structure 102.1 are clamped with each other to achieve the compression of the pre-compressed spring, and then use an external force and rotate the pre-compressed spring 10 to rotate the first clamping structure 101.1 away from the second clamping structure 102.1 to achieve the release of the pre-compressed spring.

[0085] The descriptions of the above specification and embodiments are used to explain the protection scope of the present invention, but do not constitute a limitation to the protection scope of the present invention. Through the inspiration of the present invention or the above embodiments, those of ordinary skill in the art, combined with common general knowledge, ordinary technical knowledge in the art and / or the prior art, through logical analysis, reasoning or limited experiments, can obtain modifications, equivalent replacements or other improvements to some of the technical features of the embodiments of the present invention, which should all be included in the protection scope of the present invention.

Claims

1. An elastic pad, comprising one or more elastic modules and a bottom layer arranged below the elastic modules, characterized in that: The elastic module includes a plurality of pre-compression springs; a connecting piece is provided in the middle of the pre-compression spring, and also includes a lap joint, adjacent pre-compression springs are connected in the middle, and are connected to the lap joint by the connecting piece, the lap joint connects adjacent pre-compression springs, and the bottom surface of the pre-compression spring is connected to the bottom layer.

2. The elastic pad according to claim 1, characterized in that: The connecting member comprises a connecting seat, the connecting seat is provided with a first connecting structure, the lap joint is provided with a second connecting structure, and the first connecting structure is connected with the second connecting structure to realize the connection between the connecting member and the lap joint.

3. The elastic pad according to claim 2, characterized in that: The connecting seat is provided with a plug as the first connecting structure, and the lap joint is provided with a socket as the second connecting structure. The plug and the socket are connected in male and female manner to realize the connection between the connecting member and the lap joint.

4. The elastic pad according to claim 3, characterized in that: The connecting piece comprises a connecting seat, the connecting seat is provided with a protrusion as the plug-in, the lap joint is provided with a groove as the socket, and the protrusion is limitedly matched with the groove.

5. The elastic pad according to claim 4, characterized in that: The protrusions are evenly arranged around the connecting seat.

6. The elastic pad according to claim 5, characterized in that: The grooves are arranged around the bridging piece.

7. The elastic pad according to claim 6, characterized in that: The lap joint includes a fixing seat and a knob connected around the fixing seat, the knob is provided with a groove matched with the protrusion, the protrusion is inserted into the groove and the knob is rotated to lock the protrusion, thereby realizing the connection between the connecting member and the lap joint.

8. The elastic pad according to claim 1, characterized in that: The pre-compression springs on the periphery of the elastic module are connected by overlapping pieces, or the connecting pieces are buckled with each other.

9. The elastic pad according to claim 3, characterized in that: The connecting piece comprises a detachable connecting piece assembly with two or more petals, which is clamped on the waist of the pre-compression spring.

10. The elastic pad according to claim 9, characterized in that: The two-petal or multi-petal connector components of the connector are interlocked with each other.

11. The elastic pad according to any one of claims 1 to 10, characterized in that: It also includes an upper cushion layer, which is arranged above the elastic module or covers the upper part and the periphery of the elastic module.

12. The elastic pad according to claim 11, characterized in that The upper cushion layer is detachably connected to the pre-compression spring of the outermost peripheral elastic module.

13. The elastic pad according to claim 12, characterized in that A plurality of drawstring strips are arranged around the upper cushion layer, and the drawstring strips are buckled and connected with the connecting pieces or overlapping pieces of the pre-compressed springs of the elastic module located at the periphery.

14. The elastic pad according to claim 13, characterized in that The upper cushion layer is a complete upper cushion layer formed in one piece, or is formed by combining a plurality of upper cushion layers with different hardness and softness.

15. The elastic pad according to any one of claims 1 to 10, characterized in that: The bottom layer is formed by detachably splicing a plurality of bottom layer units, or is integrally formed.

16. The elastic pad according to claim 15, characterized in that The multiple bottom layers are detachably spliced ​​to form an elastic module base.

17. The elastic pad according to claim 16, characterized in that The multiple bottom layer units or the multiple bottom layers are connected via a third piece.

18. The elastic pad according to claim 17, characterized in that The third component is a connecting knob, and a symmetrical T-shaped foot is provided at the bottom of the connecting knob. The outer periphery of the bottom unit or the bottom layer is provided with a slide rail connected to the T-shaped foot, and the width of the slide rail gradually narrows along the rotation direction of the connecting knob; the connecting knob is inserted into the wide part of the slide rail between two adjacent bottom units or bottom layers, and the connecting knob is rotated until the T-shaped foot is limited by the narrow part of the slide rail to realize the connection between two adjacent bottom units or bottom layers.

19. The elastic pad according to claim 15, characterized in that The pre-compression spring is connected to the bottom layer through the fixing member.

20. The elastic pad according to claim 19, characterized in that The fixing element is at least partially disposed on the bottom layer.

21. The elastic pad according to claim 20, characterized in that The fixing piece is a positioning protrusion arranged on the bottom unit, and a concave cavity structure that is limitedly matched with the positioning protrusion is provided on the lower end surface of the pre-compression spring. The positioning protrusion and the concave cavity structure are connected in a male-female manner to realize the connection between the pre-compression spring and the bottom layer.

22. The elastic pad according to claim 15, characterized in that The bottom layer is formed of a rigid substrate or a flexible substrate.

23. The elastic pad according to any one of claims 1 to 10, characterized in that: The pre-compression spring can be compressed to a locked state.

24. The elastic pad according to claim 23, characterized in that The pre-compression spring comprises a top cover and a bottom cover, a spring is arranged between the top cover and the bottom cover, a locking structure is arranged between the top cover and the bottom cover, and the top cover and the bottom cover are buckled through the locking structure to compress the pre-compression spring to a locked state.

25. The elastic pad according to claim 24, characterized in that A first locking structure is arranged on the lower end surface of the top cover, and a second locking structure is arranged on the upper end surface of the bottom cover. The first locking structure and the second locking structure are detachably buckled. The first locking structure and the second locking structure are buckled with each other to realize compression of the pre-compression spring, and are detached from each other to realize release of the pre-compression spring.

26. The elastic pad according to claim 25, characterized in that A concave cavity structure is arranged on the lower end surface of the bottom cover of the pre-compression spring, and the bottom cover is the top surface of the concave cavity structure.

27. The elastic pad according to claim 26, characterized in that The second positioning structure is a convex edge on the top surface of the concave cavity structure, and the convex edge is discontinuous.

28. An application of an elastic pad, characterized in that: The elastic pad described in any one of claims 1 to 27 is applied to sofas, mattresses, and soft-padded stools.

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