Elastic module, elastic cushion and furniture

Abstract

Provided in the present invention is an elastic module, comprising upper springs, lower springs and connecting modules, wherein first connecting portions are provided on bases of the upper springs and upper covers of the lower springs, the first connecting portions are connected to second connecting portions on upper and lower end faces of each of the connecting modules to form an elastic unit, and a plurality of elastic units are connected to form the elastic module by means of third connecting portions. By means of detachably connecting and positioning conical springs inside the elastic units, a user can adjust the hardness of an elastic cushion by means of replacing elastic members having different tension degrees, so as to ameliorate the technical problem of poor hardness adjustability of an integrated mattress. Adjacent elastic units in the same plane are combined and mounted by means of a detachable structure, such that disassembly and assembly are convenient, and the plane size can also be adjusted; and the user can adjust the geometric profile of the elastic module on the basis of actual usage scenario requirements, thereby overcoming the limitation whereby an existing elastic cushion can only be custom-made or purchased in a targeted manner, and sufficiently solving the common problem of poor universality of the size and model of an integrated elastic cushion.

Description

A flexible module, a flexible pad, and furniture Technical Field

[0001] This invention relates to the field of furniture technology, and more particularly to an elastic module, an elastic pad, and furniture. Background Technology

[0002] As people's material living standards gradually improve, residents' demands for home furnishings are also changing. Especially for products like mattresses and sofas that require prolonged sitting or lying down, user demands are not only increasing but also becoming more diversified. It's important to note that in the current home furnishing market, mattresses are clearly divided into high-end and low-end mattresses. Low-end mattresses are typically thinner, easier to move and store, but they may not meet users' comfort needs to some extent. High-end mattresses, on the other hand, usually have complex internal structures, exquisite workmanship, and greater thickness, providing superior comfort. However, due to their complex internal structure, high-end mattresses cannot be disassembled, making them inconvenient to move and store. Furthermore, if parts of a high-end mattress age, users cannot perform targeted maintenance and must discard the entire mattress, resulting in waste. Additionally, existing high-end mattresses are all one-piece structures, meaning users cannot adjust their firmness, and they are generally assembled to fit the main dimensions of the bed frame, resulting in poor sizing compatibility. Summary of the Invention

[0003] This invention provides an elastic module to improve the technical problem of poor adjustability of the softness and hardness of traditional elastic pads.

[0004] To solve the above-mentioned technical problems, the present invention provides an elastic module, including an upper spring, a lower spring, and a connecting module. The base of the upper spring and the upper cover of the lower spring are provided with a first connecting part. The first connecting part is connected to a second connecting part on the upper and lower end faces of the connecting module, thereby connecting the upper and lower springs into an elastic unit. The upper and lower springs are pre-compression springs covered by flexible sleeves.

[0005] The side of the connecting module is provided with a third connecting part, and multiple elastic units are connected to form an elastic module through the third connecting part.

[0006] In a preferred embodiment, the first connecting part of the base of the upper spring and the upper cover of the lower spring is a buckle, and the second connecting part of the upper and lower end faces of the connecting module is a slot, wherein the buckle and the slot are adapted to each other.

[0007] In a preferred embodiment, the slot has a first portion for inserting a first latch and a second portion communicating with the first portion and extending circumferentially;

[0008] A pair of buckles are provided on the base of the upper spring and the upper cover of the lower spring. The buckles are inserted into the first part of the slot and rotated to the second part, and the buckles are tightly fitted with the second part of the slot.

[0009] In a preferred embodiment, the third connecting part is provided with a plug and a groove on the same side of the connecting module. The plug has an elastic arm that extends outward to the groove. The plug is inserted into the groove corresponding to the third connecting part of another elastic unit. The plug is elastically pressed against the elastic arm and tightly fitted with the wall of the groove.

[0010] In a preferred embodiment, the wall of the groove is provided with a limiting portion, and the plug is provided with a protrusion that cooperates with the limiting portion.

[0011] In a preferred embodiment, the base of the upper spring and the upper cover of the lower spring include an outer clamping ring and an inner fixing ring. The inner fixing ring is disposed inside the cloth sleeve and is tightly fitted with the spring steel wire. The outer clamping ring is disposed outside the cloth sleeve. The inner fixing ring and the outer clamping ring are nested together and clamp the flexible sleeve. The first connecting part is disposed on the outer clamping ring.

[0012] In a preferred embodiment, the inner fixing ring includes an outer ring wall and an inner ring extending inward from the ring wall, and the outer clamping ring includes an inner ring wall and an outer ring extending outward from it. The inner ring of the inner fixing ring abuts against the inner ring wall of the outer clamping ring, and the outer ring of the outer clamping ring abuts against the outer ring wall of the inner fixing ring.

[0013] In a preferred embodiment, the upper and lower springs may be at the same height or at different heights.

[0014] In a preferred embodiment, the upper and lower springs are conical springs, and the small end face of the conical spring is connected to the base of the upper spring and the upper cover of the lower spring through a detachable structure, while its large end face supports the cloth sleeve with a predetermined initial compression force.

[0015] In a preferred embodiment, the detachable structure is a snap-fit ​​groove provided on the base of the upper spring and the upper cover of the lower spring.

[0016] In a preferred embodiment, the third connecting portion includes a first connecting structure and a second connecting structure, the first connecting structure and the second connecting structure being disposed on adjacent sides of the third connecting portion.

[0017] In a preferred embodiment, the third connecting part is provided with a plug as a first connecting structure and a socket as a second connecting structure; the plug on the connecting module and the socket on another connecting module are connected to realize the connection between the flexible units.

[0018] In a preferred embodiment, the plug-in and the socket are arranged alternately; or the plug-in is disposed on two opposite sides of the connection module, and the socket is disposed on the other two opposite sides of the connection module.

[0019] In a preferred embodiment, the plug-in is provided with a locking structure that engages with the side wall of the socket, and the locking structure is elastic; the side wall of the socket is provided with a release member that pushes the locking structure elastically at a position corresponding to the locking structure; pressing the release member causes the locking structure to release its engagement with the socket, thereby disassembling the adjacent elastic unit.

[0020] In a preferred embodiment, the locking structure is a protrusion located above the plug-in, and the upper sidewall of the socket has a space for the protrusion to be inserted, thereby achieving a limiting fit between the locking structure and the socket.

[0021] In a preferred embodiment, the locking structure is a protrusion provided on both sides or one side of the plug, and the release member and the side wall of the socket form a space to engage the protrusion, thereby achieving a limiting fit between the locking structure and the socket.

[0022] In a preferred embodiment, the plug is a T-shaped protrusion, the socket is a recess, and a button that moves vertically up and down is fitted onto the recess; the button has a locking hole corresponding to the recess, and a limiting hole with a diameter smaller than the locking hole is provided above the locking hole; the T-shaped protrusion on the elastic unit connector passes through the locking hole and is engaged in the recess of another elastic unit connector, and the button is pressed until the T-shaped protrusion is locked by the limiting hole, thereby realizing the interconnection of the elastic units.

[0023] In a preferred embodiment, the plug is a protrusion, the socket is a groove, the groove is fitted with a knob, and the knob has a space for the protrusion to engage with the groove. The protrusion engages with the groove, and rotating the knob until the protrusion is locked enables the elastic units to connect to each other.

[0024] In a preferred embodiment, the third connecting part includes a first connecting structure and a second connecting structure, which are respectively disposed on different elastic units; the first connecting structure of the elastic unit is connected to the second connecting structure of another elastic unit to realize the connection of the elastic module.

[0025] In a preferred embodiment, the first connection structure is configured as a plug-in, and the second connection structure is configured as a socket, wherein the plug-in and the socket are connected by a male and female connection to realize the connection between the elastic units;

[0026] The plug has a rotatable protrusion, and the socket is a concave hole. When the protrusion rotates to be misaligned with the concave hole, the first connecting structure is connected to the second connecting structure. When the protrusion rotates to be aligned with the concave hole, the first connecting structure is disconnected from the second connecting structure.

[0027] In a preferred embodiment, the third connection portion is a male end and a female end, and the male ends and female ends of two adjacent elastic units are connected to each other to connect multiple elastic units into an elastic module;

[0028] The female end has a slot for the male end to be inserted along the width direction of the elastic unit and for being limited and engaged in the opposite direction of insertion; the male end includes an insertion section for inserting into the slot and a limiting section rotatably connected to the insertion section; the limiting section rotates relative to the insertion section from a first position to a second position under the action of an external force, and when the limiting section is in the second position, the limiting section and the female end are limited and engaged in the height direction of the elastic unit.

[0029] In a preferred embodiment, the limiting segment is disposed on the upper and lower sides of the insertion segment along the height direction of the elastic unit.

[0030] In a preferred embodiment, the female end is provided with a positioning protrusion, and the male end is provided with a positioning groove that mates with the positioning protrusion; when the limiting segment is in the second position, the positioning protrusion is placed in the positioning groove.

[0031] In a preferred embodiment, the side of the slot facing the male end is an open surface, and the two side walls of the open surface extend in a direction of mutual proximity to form limiting walls; the distance between the two limiting walls is less than the width of the insertion segment, so as to limit the engagement of the insertion segment in the opposite direction of insertion after the insertion segment is inserted into the slot.

[0032] In a preferred embodiment, the connecting module is a waist ring, and two male ends and two female ends are arranged sequentially at 90° intervals on the side of the waist ring.

[0033] In a preferred embodiment, the second connecting part is a rotary symmetrically arranged screw groove, and the first connecting part is a post placed in the screw groove; the upper spring or the lower spring moves between a first position and a second position along the direction of extension of the screw groove under the action of external force; when the upper spring or the lower spring is in the first position, the post is released from the limiting engagement with the screw groove; when the upper spring or the lower spring is in the second position, the post is limited to the screw groove in the opposite direction of the post insertion.

[0034] In a preferred embodiment, the swivel groove is divided into a first part and a second part that are interconnected. The width of the first part is greater than the width of the largest part of the insert, and the width of the second part is less than the width of the largest part of the insert.

[0035] In a preferred embodiment, when the upper or lower spring is in the first position, the insert is placed in the first part; when the upper or lower spring is in the second position, the insert is placed in the second part.

[0036] In a preferred embodiment, the insert is divided into an insertion portion and a limiting portion; the width of the insertion portion is greater than the width of the limiting portion.

[0037] The present invention also provides an elastic pad, the elastic pad comprising an additional surface layer and the above-described elastic module, wherein the additional surface layer can be laid on the above-described elastic module.

[0038] In a preferred embodiment, flexible straps are arranged at intervals around the periphery of the additional surface layer, one end of the flexible straps being fixed to the additional surface layer and the other end being connected to the insertion card holder.

[0039] The plug-in socket engages with the third connecting part on the adjacent edge of the elastic module to secure the additional surface layer.

[0040] In a preferred embodiment, the additional surface layer is an elastic layer.

[0041] The present invention also provides a piece of furniture comprising the above-described elastic pad and / or elastic module, wherein the furniture is a bed or a chair.

[0042] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0043] The present invention provides an elastic module that can be detachably installed by means of an internal conical pre-compression spring through a snap-fit ​​groove. Users can adjust the softness and hardness of the elastic pad by replacing elastic elements with different tensions, thus improving the technical problem of poor adjustability of the softness and hardness of traditional integrated elastic pads.

[0044] The present invention provides an elastic module that allows adjacent elastic units on the same plane to be detachably assembled via a connecting module. This makes disassembly and assembly convenient and the planar assembly method more flexible. Users can flexibly adjust the geometry of the elastic module according to their actual needs, overcoming the limitation that existing mattresses can only be customized or purchased according to the size of the main frame of the bed frame. This effectively solves the common problem of poor size and model universality of traditional one-piece elastic mattresses. Attached Figure Description

[0045] Figure 1 is an overall assembly diagram of the elastic unit in Embodiment 1 of the present invention;

[0046] Figure 2 is a breakdown diagram of the elastic unit in Embodiment 1 of the present invention;

[0047] Figure 3 is an illustration of the operation of separating the upper elastic element in Embodiment 1 of the present invention;

[0048] Figure 4 is an illustration of the operation of separating the lower elastic element in Embodiment 1 of the present invention;

[0049] Figure 5 is an axial view of the connection module in Embodiment 1 of the present invention;

[0050] Figure 6 is an axial sectional view of the elastic unit in Embodiment 1 of the present invention;

[0051] Figure 7 is an axial view of the pre-compression spring in Embodiment 1 of the present invention;

[0052] Figure 8 is an axial view of the elastic module in Embodiment 2 of the present invention;

[0053] Figure 9 is a front view of the elastic module in Embodiment 2 of the present invention;

[0054] Figure 10 is an axial view of the elastic pad in Embodiment 3 of the present invention;

[0055] Figure 11 is a partial enlarged view of the elastic pad in Embodiment 3 of the present invention;

[0056] Figure 12 is an overall assembly diagram of the elastic unit in Embodiment 4 of the present invention;

[0057] Figure 13 is an enlarged view of section A1 in Figure 12;

[0058] Figure 14 is an enlarged view of section A2 in Figure 12;

[0059] Figure 15 is a schematic diagram of the connection relationship in Embodiment 4 of the present invention;

[0060] Figure 16 is an overall assembly diagram of the elastic unit in Embodiment 5 of the present invention;

[0061] Figure 17 is an enlarged view of section A3 in Figure 16;

[0062] Figure 18 is an enlarged view of section A4 in Figure 16;

[0063] Figure 19 is a schematic diagram of the insertion relationship in Embodiment 5 of the present invention;

[0064] Figure 20 is an overall assembly diagram of the elastic unit in Embodiment 6 of the present invention;

[0065] Figure 21 is an overall assembly diagram of the elastic unit in Embodiment 7 of the present invention;

[0066] Figure 22 is an enlarged view of section A5 in Figure 21;

[0067] Figure 23 is an enlarged view of section A6 in Figure 21;

[0068] Figure 24 is an overall assembly diagram of the elastic unit in Embodiment 8 of the present invention;

[0069] Figure 25 is an enlarged view of section A7 in Figure 24;

[0070] Figure 26 is an enlarged view of section A8 in Figure 24;

[0071] Figure 27 is an exploded view of the elastic unit in the ninth embodiment of the present invention;

[0072] Figure 28 is an isometric view of the elastic element in the ninth embodiment of the present invention;

[0073] Figure 29 is a schematic diagram of the waist ring in the ninth embodiment of the present invention;

[0074] Figure 30 is a schematic diagram of the waist ring in the ninth selective embodiment of the present invention from another angle;

[0075] Figure 31 is a schematic diagram of multiple waist rings connected in the ninth embodiment of the present invention;

[0076] Figure 32 is a schematic diagram from another angle of multiple waist rings connected in the ninth selective embodiment of the present invention;

[0077] Figure 33 is a schematic diagram of the elastic module in the ninth embodiment of the present invention;

[0078] Figure 34 is a schematic diagram of the elastic pad in the ninth embodiment of the present invention;

[0079] Figure 35 is a magnified view of a portion of Figure 34;

[0080] Figure 36 is a structural schematic diagram of a single spring component disassembled in the tenth embodiment of the preferred embodiment of the present invention;

[0081] Figure 37 is a structural schematic diagram of a single spring element in the tenth embodiment of the preferred embodiment of the present invention;

[0082] Figures 38-39 are schematic diagrams of the elastic module adjusting the hardness in the tenth embodiment of the preferred embodiment of the present invention. Detailed Implementation

[0083] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0084] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0085] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0086] Example 1

[0087] Referring to Figures 1-7, this embodiment provides an elastic unit 1, which consists of an upper spring 11, a connecting module 13, and a lower spring 12 along its height from top to bottom. The upper spring 11 and lower spring 12 are pre-compressed springs covered by a cloth sleeve a or other flexible material. Specifically, the upper spring 11 and lower spring 12 are conical springs with one end face ring larger than the other end face ring. The base of the upper spring 11 and the upper cover of the lower spring 12 have the same structure, both including a nested outer compression ring 101 and an inner fixing ring 102. The nested outer compression ring 101 and inner fixing ring 102 are used to compress and fix the relative position of the flexible sleeve a.

[0088] Specifically, referring to Figure 6, the inner fixing ring 102 located inside the fabric sleeve a includes an outer ring wall 102-1 and an inner ring 102-2 extending inward from the ring wall. The outer compression ring 101 located outside the fabric sleeve a includes an inner ring wall 101-1 and an extending outer ring 101-2. The inner ring 102-2 of the inner fixing ring 102 abuts against the inner ring wall 101-1 of the outer compression ring 101, and the outer ring 101-2 of the outer compression ring 101 abuts against the outer ring wall 102-1 of the inner fixing ring 102. That is to say, the base of the upper spring 11 and the upper cover of the lower spring 12 are both embedded around the opening of the flexible sleeve a, and the two together form an enclosing space surrounding the conical spring. Within this enclosed space, the conical spring is detachably mounted at its small end face within the locking groove 103 of the inner fixing ring 102 on the base of the upper spring 11 and the upper cover of the lower spring 12, with its large end face extending away from the inner fixing ring 102. In this internal structural layout, the nested inner fixing ring 102 and outer fixing ring 101 not only serve as a load-bearing and positioning support, but the locking groove 103 of their detachable connection structure allows users to adjust the firmness of the elastic pad by replacing pre-compression springs with different tensions. Alternatively, in cases where the pre-compression spring wire becomes fatigued and elastically loosens after prolonged compression, this detachable connection structure allows for the replacement of the pre-compression spring wire with a new one. This addresses the resource waste caused by the inability to perform targeted maintenance and the need for complete disposal of traditional integrated elastic pads due to the aging of some components, thereby improving the product's practicality and durability. The large end face of the pre-compression spring extends away from the fixed ring 102 and pushes against the expanded cloth sleeve a with a predetermined initial compression force. While the cloth sleeve a is passively subjected to force, the flexible material of its main body is expanded and stretched, so that the cloth sleeve a and the pre-compression spring nested with it fit together more tightly. This ensures that the elastic coils arranged at intervals on the conical spring are connected as one unit along the radial inclined plane, further improving the structure's resistance to torsional deformation.

[0089] Both the upper spring 11 and the lower spring 12 are detachably connected to the connecting module 13 in the middle position via a rotation limiting structure, and together they form an elastic unit 1 extending along their own height direction. Specifically, the upper spring 11 and the lower spring 12 are respectively connected to the second connecting parts on the upper and lower end faces of the connecting module 13 via the first connecting parts on the base of the upper spring 11 and the upper cover of the lower spring 12, so as to achieve a detachable connection. Structurally, the first connecting part is a buckle 104, and the second connecting part is a slot 131 adapted to the buckle 104. The buckle 104 and the slot 131 rotate and lock together to assemble the elastic unit 1.

[0090] Referring to Figure 5, the slot 131 has a first portion for inserting the latch 104 and a second portion that communicates with the first portion and extends circumferentially. When the latch 104 moves into the second portion within the slot 131, the latch 104 and the second portion are engaged in a limiting fit against the direction of insertion of the latch 104. The limiting structure design of the slot 131 facilitates quick disassembly or assembly of the upper and lower springs relative to the connecting module 13 by a user through rotation and screwing.

[0091] Since adjacent elastic units 1 in the same plane are connected by a third connecting part 132 arranged around the periphery of the connecting module 13, one side of the third connecting part 132 is provided with a plug 132-1 and the other side is provided with a groove 132-2. One end of the plug 132-1 is provided with an elastic arm 132-11 extending outward into the groove 132-2. When the plug 132-1 is inserted into the groove corresponding to the third connecting part of another elastic unit, the plug 132-1 is elastically pressed against by its elastic arm 132-11 and tightly fitted with the wall of the groove. The other end of the plug 132-1 passes through a notch on the end of the third connecting part 132 to form an operating part 132-12. Since the wall of the groove is also provided with a limiting part 132-13, the limiting part 132-13 is in limiting cooperation with the protrusion 132-13 on the operating part 132-12. Under the action of the external force of the spring operating part 132-12, the protrusion 132-13 rotates from the first position to the second position. When the protrusion 132-13 is in the first position, the two adjacent mating third connecting parts 132 are engaged. When the protrusion 132-13 is in the second position, the two adjacent mating third connecting parts 132 are disengaged.

[0092] The elastic unit 1 consists of an upper spring 11, a connecting module 13, and a lower spring 12, arranged from top to bottom along its height. As shown in Figure 1, the assembled elastic unit 1 has a tapered end face at both its top and bottom. This structure effectively increases the force-bearing and support area, further enhancing the installation balance and assembly stability of the elastic unit 1. Considering different user requirements regarding the thickness of the elastic pad, this embodiment does not restrict the height of the upper spring 11 and lower spring 12 connected by the connecting module 12. That is, the upper and lower springs can be of equal or unequal height, and users can select the height or number of layers according to their usage habits. In other words, users can choose a single-layer elastic pad with only the upper spring 11, or a double-layer elastic pad with both upper and lower springs 11 and 12, or adjust the thickness and comfort of the elastic pad by selecting the tension of the upper and lower springs.

[0093] Example 2

[0094] Referring to Figures 8 and 9, this embodiment provides an elastic module assembled from the aforementioned elastic units 1. The elastic module contains a plurality of elastic units 1, and adjacent elastic units 1 are locked together by a third connecting portion 132 provided around the periphery of the connecting module 13. When assembling the elastic module, firstly, the elastic units 1 to be installed are placed flat; then, the adjacent elastic units 1 are positioned and aligned according to the placement direction of their third connecting portions 132; then, a certain pressing force is applied to the two adjacent elastic units 1 that have been adjusted, pushing the connector 132-1 into the groove in the mating elastic unit 1. At this point, the operating portion 132-12 can be seen protruding outwards. The assembly of the two adjacent mating elastic units 1 is then complete. Subsequent installation steps are performed using the same operation to complete the mating installation of the remaining elastic units 1. To disassemble the assembled elastic modules, simply press the two symmetrically arranged operating parts 132-12 simultaneously. The pressure generated by pressing causes the connector 132-1 to misalign along its inclined surface, and drives the protrusion 132-31 on the operating part 132-12 to disengage from the limiting part 132-4. At this point, the two adjacent elastic units 1 are separated. This assembly method is flexible and convenient, allowing for flexible adjustment of the elastic module's geometry according to the user's actual needs. It overcomes the limitation that existing elastic pads (mattresses) can only be customized or purchased according to the dimensions of the (bed frame) main frame, effectively solving the common problem of poor sizing and model universality of integrated elastic pad structures.

[0095] Example 3

[0096] Referring to Figures 10-11, this embodiment provides an elastic pad and furniture equipped with such an elastic pad. The elastic pad includes an additional surface layer 2 and an elastic module formed by assembling the elastic units 1 in the above embodiment. The additional surface layer 2 can be laid on and cover the elastic module composed of the elastic units 1. Since the elastic units 1 at the top of the elastic module are inverted cone shapes, multiple inverted cones clustered together are prone to tipping and tilting under stress. This embodiment solves the overall stress problem of such structures by setting the additional surface layer 2 to bring together the stress-bearing surfaces of the elastic units 1 at the top of the elastic module, effectively improving the overall compactness of the structure.

[0097] Flexible straps 201 are arranged at intervals around the periphery of the additional surface layer 2. One end of the flexible straps 201 is fixed to the additional elastic surface layer 2, and the other end is connected to the insertion card seat 202. The insertion card seat 202 can be engaged with the third connecting part 132 on the edge of the elastic module to fix the additional surface layer 2 in a relative position on the elastic module.

[0098] Example 4

[0099] Referring to Figures 12-15, the main difference between this embodiment and Embodiment 1 is that the third connecting part in this embodiment includes a first connecting structure and a second connecting structure, which are alternately arranged on adjacent sides of the third connecting part. The first connecting structure and the second connecting structure are arranged adjacently on different sides of the connecting module 13. More specifically, in this embodiment, two opposite sides are provided with plugs 111 as the first connecting structure, and two opposite sides of the connecting seat are provided with sockets 112 as the second connecting structure. A protrusion 111.1 is provided above the plug 111 as a locking structure, and the upper wall of the socket 112 has a space for the protrusion 111.1 to be inserted. When the plug 111 is inserted into the socket 112, the protrusion 111.1 is locked into the space, and at this time, the plug 111 and the socket 112 are matched to achieve the connection between the pre-compression spring 10. The protrusion 111.1, serving as a locking structure, is elastic. A release element 112.1, positioned on the upper wall of the socket 112 corresponding to the protrusion 111.1, is provided to push the protrusion's elasticity. Pressing the release element 112.1 causes the protrusion 111.1 to move away from the space on the upper wall of the socket 112, releasing the limiting engagement between the plug 111 and the socket 112, thus disassembling the elastic module. When connecting the elastic module, the plug 111 on the connecting module 13 of the elastic unit 1 is inserted into the socket 112 of another elastic unit, and the protrusion 111.1 engages with the space on the upper wall of the socket 112, connecting the pre-compression spring 10. When disassembling the elastic module, pressing the release element 112.1 causes the protrusion 111.1 to move away from the space on the upper wall of the socket, releasing the limiting engagement between the socket 112 and the plug 111, thus disassembling the pre-compression spring 10.

[0100] Example 5

[0101] Referring to Figures 16-19, the main difference between this embodiment and Embodiment 1 is that in this embodiment, the plug 121 is inserted into the socket 122 from above, i.e., from the height direction of the elastic unit. The socket 122 has an opening in the insertion direction of the plug 121 and also opens in the opposite direction to the elastic unit, making the socket more elastic and resulting in a tighter fit between the plug 121 and the socket 122. The plug 121 and the socket 122 are detachably mounted on the periphery of the connecting module 13. Protrusions 121.1 are provided on both sides or one side of the plug 121 as a locking structure. Release members 122.1 are provided on the two side walls of the socket 122 at positions corresponding to the protrusions 121.1. The release members 122.1 and the two side walls of the socket form a space where the protrusions 121.1 can be engaged. When the plug 121 is inserted vertically into the socket 122, the protrusions 121.1 engage in the space on the two side walls of the socket, at which point the plug 121 and the socket 122 achieve a limiting fit, thus realizing the connection between the elastic units. The press release component 122.1 pushes the protrusion 121.1 away from the space between the two elastic units on both sides of the socket to achieve disassembly between the two elastic units.

[0102] Example 6

[0103] Referring to Figure 20, the main difference between this embodiment and Embodiment 1 is that two opposite sides of the connecting module 13 are provided with plug-in T-shaped protrusions 131 as the first connecting structure, and the other two opposite sides of the connecting seat are provided with socket recesses, and buttons 132 that can move vertically up and down in the recesses are fitted onto the recesses as the second connecting structure. Specifically, the button 132 is provided with a locking hole 132.1 corresponding to the recess, and a limiting hole 132.2 with a diameter smaller than the locking hole is provided above the locking hole 132.1. When connecting elastic units, the T-shaped protrusion 131 of the connector passes through the locking hole 132.1 of the button of another elastic unit and then locks into the recess. In this state, the T-shaped protrusion passes through the insertion hole, recess, and button locking hole. Then, press the button down until the T-shaped protrusion 131 is locked by the limiting hole 132.2 to realize the connection between the elastic units. When disassembling the elastic module, lift the button up until the locking hole 132.1 is aligned with the recess to release the lock. Remove the T-shaped protrusion 131 from the recess to release the connection between the elastic units.

[0104] Example 7

[0105] Referring to Figures 21-23, the main difference between this embodiment and Embodiment 1 is that two opposite sides of the connecting module 13 are provided with plug-in T-shaped protrusions 141 as the first connecting structure, and the other two opposite sides of the connecting module 13 are provided with insertion grooves 142 and knobs 142.1. The knobs 142.1 are fitted into the grooves 142 as the second connecting structure, and the knobs 142.1 have a space for the T-shaped protrusions 141 to fit into the grooves 142. When connecting the elastic unit 1, the T-shaped protrusions 141 are inserted into the grooves 142 of another pre-elastic unit through the knobs 142.1. At this time, the T-shaped protrusions 141 and the grooves 142 are in a horizontal limiting fit. Rotating the knobs 142.1 until the T-shaped protrusions 141 and the knobs are in a vertical limiting fit, at which time the T-shaped protrusions 141 are locked by the knobs 142.1, realizing the connection between adjacent elastic units 1. When disassembling the elastic module, rotate knob 142.1 to release the lock on T-shaped protrusion 141, and remove T-shaped protrusion 141 to disconnect the connection between adjacent elastic units.

[0106] Example 8

[0107] Referring to Figures 24-26, the main difference between this embodiment and Embodiment 1 is that the third connecting portion provided around the connecting module 13 includes a first connecting structure 152 and a second connecting structure 151, which are respectively located on different elastic units. Specifically, the connecting seat of the second connecting structure 151 extends outwards to form an extension portion, and a recessed hole 151.1 on the extension portion serves as an insertion port; similarly, the connecting seat of the first connecting structure 152 extends outwards to form an extension portion, and a rotatable protrusion 152.1 on the extension portion serves as a plug. When the elastic units 1 are connected, the protrusion 152.1 of the first connecting structure 152 is inserted into the recessed hole 151.1 of the second connecting structure. The protrusion 152.1 and the recessed hole 151.1 are horizontally positioned and engaged. Rotating the protrusion 152.1 until it is misaligned with the recessed hole 151.1 results in a vertically positioned and engaged connection between the elastic units 1. When disassembling the elastic module, rotate the protrusion 152.1 until it coincides with the recess 151.1. At this time, the protrusion 152.1 can be dislodged from the recess 151.1 to release the connection between the elastic units 1.

[0108] Example 9

[0109] Referring to Figures 27-35, in this embodiment, the third connecting part 132 is divided into a male end 132-5 and a female end 132-6. The male ends 132-5 and female ends 132-6 of two adjacent elastic units 1 are connected to each other to connect multiple elastic units 1 into an elastic module.

[0110] In this embodiment, two adjacent elastic units 1 only need to be connected along the width direction of the elastic unit 1 to form a limiting fit in both the width and height directions of the elastic unit 1. This avoids the drawback of the prior art, which requires the two elastic units 1 to move relative to each other along the height direction before they can be connected or disassembled. To achieve the above effect, the female end 132-6 has a slot 132-61 for the male end 132-5 to be inserted along the width direction of the elastic unit 1 and for a limiting fit in the opposite direction of insertion; thus, after the male end 132-5 is inserted into the female end 132-6, the male and female ends form a limiting fit in the width direction of the elastic unit 11.

[0111] To form a limiting fit between the two elastic units 1 along the height direction, the male end 132-5 includes an insertion section 132-51 for inserting into the slot 132-61 and a limiting section 132-52 rotatably connected to the insertion section 132-51; under the action of external force, the limiting section 132-52 rotates relative to the insertion section 132-51 from a first position to a second position. When the limiting section 132-52 is in the second position, the limiting section 132-52 and the female end 132-6 are limited to fit together along the height direction of the elastic unit 1.

[0112] The aforementioned elastic unit 1 divides the male end 132-5 into an insertion section 132-51 and a limiting section 132-52. This allows the insertion section 132-51 and the female end 132-6 to form a limiting fit along the width direction of the elastic unit 1, and the limiting section 132-52 and the female end 132-6 to form a limiting fit along the height direction of the elastic unit 1. This interconnects multiple elastic units 1 in both the width and height directions, ensuring that when one elastic unit 1 is subjected to force and sinks, it can cause the surrounding elastic units 1 to sink as well, ensuring a reliable connection of the elastic units 1. Furthermore, when removing the elastic unit 1, it is only necessary to separate the male end 132-5 and the female end 132-6 along the width direction of the elastic unit 1; it is not necessary to move the elastic unit 1 along the height direction, thus eliminating the need to overcome the elastic force of the elastic unit 1. This significantly reduces the force and difficulty required to remove the elastic unit 1, making the operation more convenient for the user.

[0113] Since the elastic unit 1 has both downward and upward movement, the limiting segment 132-52 needs to enable adjacent elastic units 1 to move in both downward and upward movements. Therefore, the limiting segment 132-52 is arranged on the upper and lower sides of the insertion segment 132-51 along the height direction of the elastic unit 1. Thus, when the elastic unit 1 sinks, the upper limiting segment 132-52 engages with the female end 132-6; when the elastic unit 1 rises, the lower limiting segment 132-52 engages with the female end 132-6.

[0114] The position change of the limiting segment 132-52 is achieved by the user applying external force. This can easily lead to the limiting segment 132-52 not rotating into its correct position. To avoid this problem, the female end 132-6 is provided with a positioning protrusion 132-62, and the male end 132-5 is provided with a positioning groove that mates with the positioning protrusion 132-62. Thus, when the user applies external force to move the limiting segment 132-52 to the second position, the positioning protrusion 132-62 is positioned in the positioning groove. The positioning protrusion 132-62 and the positioning groove provide a clear indication to the user, allowing the user to accurately rotate the limiting segment 132-52 to the second position.

[0115] In this embodiment, in order to achieve a limiting fit between the insertion segment 132-51 and the slot 132-61 in the opposite insertion direction, the side of the slot 132-61 facing the male end 132-5 is an open surface, and the two side walls of the open surface extend in a direction of mutual proximity to form limiting walls 132-63; the distance between the two limiting walls 132-63 is less than the width of the insertion segment 132-51, so that after the insertion segment 132-51 is inserted into the slot 132-61, it is limited to a limiting fit with the insertion segment 132-51 in the opposite insertion direction. With the above settings, when the limiting segment 132-52 is inserted into the slot 132-61, it first interferes with the limiting wall 132-63, causing the limiting wall 132-63 to open outward and widen the opening surface, so that the insertion segment 132-51 can be inserted into the slot 132-61. After the insertion segment 132-51 is inserted into the slot 132-61, the interference between the insertion segment 132-51 and the limiting wall 132-63 disappears, and the limiting wall 132-63 retracts inward to reset, thereby achieving the limiting cooperation between the limiting wall 132-63 and the insertion segment 132-51 in the opposite insertion direction.

[0116] Specifically, in this embodiment, the connecting module 132 is a waist ring, with two male ends 132-5 and two female ends 132-6 arranged sequentially at 90° intervals on the side of the waist ring. In this way, by changing the relative position of two adjacent elastic units 1, one of the male ends 132-5 of the two adjacent elastic units 1 can be aligned with one of the female ends 132-6, thereby realizing the mutual connection of the two elastic units 1.

[0117] In order to meet the requirements of comfort, the elastic unit 1 needs to have a certain degree of hardness. Therefore, the upper spring 12 and the lower spring 11 are pre-compressed springs. By pre-compressing, the elastic unit 1 can have a certain degree of hardness. The hardness of the elastic unit 1 can also be adjusted by changing the degree of spring pre-compression, thereby meeting the needs of different users.

[0118] This embodiment also provides an elastic pad, including an additional surface layer 2 and an elastic module; the elastic module is formed by connecting multiple elastic units 1 as described above through a connecting module 13; the additional surface layer 2 is disposed on the upper surface of the elastic module.

[0119] To secure the additional surface layer 2, pull strips 21 are spaced circumferentially along the side of the additional surface layer 2. The end of each pull strip 21 away from the additional surface layer 2 is connected and fixed to the side of the elastic module. Specifically, the outermost ring of elastic units 1 in the elastic module has a decorative cover 22 and a cover 23 detachably connected to the decorative cover 22 on its female end 132-6. The cover 23 and the decorative cover are detachably connected by a connecting post, and a clearance cavity is formed between the cover 23 and the decorative cover 22 for the pull strips 21 to pass through. The short pull strips 21 have clearance holes corresponding to the positions of the connecting posts. When the pull strips 21 are placed in the clearance cavity, the connecting post passes through the clearance holes and connects to the decorative cover 22 to fix the short pull strips 21 in the clearance cavity.

[0120] Example 10

[0121] Referring to Figures 36-39, the connecting module 13 in this embodiment is a waist ring. The second connecting part is a screw groove 16 arranged rotationally symmetrically on the side of the waist ring facing the upper spring 11 or the lower spring 12 for connecting the upper spring 11 or the lower spring 12. The first connecting part is a pin 17 that mates with the screw groove 16. The screw groove 16 is divided into a first part 161 and a second part 162 that are interconnected along the circumference. The width of the first part 161 is greater than the width of the second part 162. The pin 17 is divided into an insertion part 171 and a limiting part 172 that are interconnected along the height direction of the upper spring 11. The width of the limiting part 172 is less than the width of the first part 161 and greater than the width of the second part 162, and the width of the limiting part 172 is greater than the width of the insertion part 171. When the upper spring 11 and the waist ring are connected, the limiting part 172 of the pin 17 is first passed through the first part 161 of the screw groove 16, so that the insertion part 171 is placed in the first part 161. Then, rotate the upper spring 11 or the lower spring 12 along the extension direction of the screw groove 16, moving it from the first position to the second position. At this time, the insertion part 171 enters the second part 162. Since the width of the limiting part 172 is greater than that of the second part 162, the limiting part 172 is engaged with the second part 162 in the opposite direction of insertion. This completes the installation of the upper spring 11. To remove the upper spring 11, simply rotate the upper spring 11 or the lower spring 12 in the opposite direction.

[0122] The third connecting part 132 is divided into a first connecting unit 132-7 and two second connecting units 132-8. The first connecting unit 132-7 and the second connecting unit 132-8 are interlocking structures. This allows adjacent elastic units to be connected together through the interlocking of the first connecting unit 132-7 and the second connecting unit 132-8 on the two waist rings. Specifically, in this embodiment, the bottom of the first connecting unit 132-7 has a cavity 132-71 for the second connecting unit 132-8 to enter, and the top of the first connecting unit 132-7 has a button 132-72. The second connecting unit 132-8 has a plug 132-81 for inserting into the cavity 132-71. The plug 132-81 has a guide slope 132-811 and a limiting surface 132-812. When the insert block 132-81 enters the insertion cavity 132-71, the pressing force between the insert block 132-81 and the edge of the insertion cavity 132-71 generates a pushing force, causing the insert block 132-81 to deform and enter the insertion cavity 132-71. After the insert block 132-81 enters the insertion cavity 132-71, the pushing force disappears, and the insert block 132-81 returns to its original position, so that the limiting surface 132-812 and the insertion cavity 132-71 are limited and matched in the opposite direction of insertion, thereby realizing the installation of the first connecting unit 132-7 and the second connecting unit 132-8. To disconnect the first connecting unit 132-7 and the second connecting unit 132-8, the button 132-72 of the first connecting unit 132-7 can be pressed. This causes the button 132-72 to press against the guide slope 132-811, generating a pushing force that deforms the insert block 132-81, thereby releasing the limiting fit between the limiting surface 132-812 and the insertion cavity 132-71. The insert block 132-81 can then be removed from the insertion cavity 132-71, thus disconnecting the first connecting unit 132-7 and the second connecting unit 132-8.

[0123] Furthermore, because the elastic unit in this embodiment can be easily replaced with the upper spring 11, and the pre-compression degree of the upper spring 11 can be adjusted by the tightness of the flexible sleeve, the elastic unit 1 can have different levels of hardness. This allows the elastic unit 1 to be spliced ​​in any area within the elastic module according to different elasticity requirements. The position can be adjusted according to the requirements of the human body curve or according to individual requirements for the degree of hardness. It should be noted that the elastic unit 1 in embodiments 1-9 can also achieve the above-mentioned hardness adjustment.

[0124] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention. Industrial Applicability

[0125] This invention provides an elastic module that allows for detachable installation of an internal conical pre-compression spring via a snap-fit ​​groove. Users can adjust the firmness of the elastic pad by replacing elastic components with different tensions, thus improving the poor adjustability of traditional one-piece elastic pads. The elastic module provided by this invention allows for the detachable assembly of adjacent elastic units on the same plane via a connecting module. This convenient assembly and disassembly, along with the more flexible planar assembly method, allows users to flexibly adjust the geometry of the elastic module according to their actual needs. This overcomes the limitation of existing mattresses that can only be customized or purchased according to the dimensions of the bed frame, effectively solving the common problem of poor size and model universality in traditional one-piece elastic pads, and demonstrating good industrial practicality.

Claims

1. A resilient module, characterized in that: The device includes an upper spring, a lower spring, and a connecting module. The base of the upper spring and the upper cover of the lower spring are provided with a first connecting part. The first connecting part is connected to a second connecting part on the upper and lower end faces of the connecting module, connecting the upper and lower springs into an elastic unit. The upper and lower springs are pre-compression springs covered with flexible sleeves. The side of the connecting module is provided with a third connecting part, and multiple elastic units are connected to form an elastic module through the third connecting part.

2. The elastic module according to claim 1, characterized in that: The first connecting part of the base of the upper spring and the upper cover of the lower spring is a buckle, and the second connecting part of the upper and lower end faces of the connecting module is a slot. The buckle and the slot are adapted to each other.

3. The elastic module according to claim 2, characterized in that: The slot has a first portion for inserting a first buckle and a second portion communicating with the first portion and extending circumferentially; A pair of buckles are provided on the base of the upper spring and the upper cover of the lower spring. The buckles are inserted into the first part of the slot and rotated to the second part, and the buckles are tightly fitted with the second part of the slot.

4. The elastic module according to claim 1, characterized in that: The third connecting part has a plug and a groove on the same side of the connecting module. The plug has an elastic arm that extends outward to the groove. The plug is inserted into the groove corresponding to the third connecting part of another elastic unit. The plug is elastically pressed against the elastic arm and tightly fitted with the wall of the groove.

5. The elastic module according to claim 4, characterized in that: The wall of the groove is provided with a limiting part, and the plug is provided with a protrusion that cooperates with the limiting part.

6. The elastic module according to claim 1, characterized in that: The base of the upper spring and the upper cover of the lower spring include an outer clamping ring and an inner fixing ring. The inner fixing ring is located inside the cloth sleeve and is tightly fitted with the spring steel wire. The outer clamping ring is located outside the cloth sleeve. The inner fixing ring and the outer clamping ring are nested together and clamp the flexible sleeve. The first connecting part is located on the outer clamping ring.

7. The elastic module according to claim 6, characterized in that: The inner fixing ring includes an outer ring wall and an inner ring extending inward from the ring wall. The outer clamping ring includes an inner ring wall and an outer ring extending outward. The inner ring of the inner fixing ring abuts against the inner ring wall of the outer clamping ring, and the outer ring of the outer clamping ring abuts against the outer ring wall of the inner fixing ring.

8. The elastic module according to claim 1, characterized in that: The upper and lower springs may be at the same height or different heights.

9. The elastic module according to claim 8, characterized in that: The upper and lower springs are conical springs. The small end face of the conical spring is connected to the base of the upper spring and the upper cover of the lower spring through a detachable structure, and its large end face supports the cloth sleeve with a predetermined initial compression force.

10. The elastic module according to claim 9, characterized in that: The detachable structure is a snap-fit ​​groove provided on the base of the upper spring and the upper cover of the lower spring.

11. The elastic module according to claim 1, characterized in that: The third connecting portion includes a first connecting structure and a second connecting structure, which are disposed on adjacent sides of the third connecting portion.

12. The elastic module according to claim 11, characterized in that, The third connecting part is provided with a plug as the first connecting structure and a socket as the second connecting structure; the plug on the connecting module and the socket on the other connecting module are connected to realize the connection between the flexible units.

13. The elastic module according to claim 12, characterized in that, The plugs and sockets are arranged alternately; or the plugs are located on two opposite sides of the connecting module, and the sockets are located on the other two opposite sides of the connecting module.

14. The elastic module according to claim 13, characterized in that, The plug-in is provided with a locking structure that engages with the side wall of the socket, and the locking structure is elastic; the side wall of the socket is provided with a release element that pushes the locking structure elastically at a position corresponding to the locking structure; pressing the release element causes the locking structure to release its engagement with the socket, thereby disassembling the adjacent elastic unit.

15. The elastic module according to claim 14, characterized in that, The locking structure is a protrusion located above the plug-in, and the upper side wall of the socket has a space for the protrusion to be inserted, so as to realize the locking structure and the socket in a limiting fit.

16. The elastic module according to claim 14, characterized in that, The locking structure consists of protrusions on both sides or one side of the plug-in. The release member and the side wall of the socket form a space for the protrusions to be engaged, thereby achieving a limiting fit between the locking structure and the socket.

17. The elastic module according to claim 13, characterized in that, The plug is a T-shaped protrusion, the insertion port is a recessed hole, and a button that moves vertically up and down is fitted on the recessed hole; the button has a locking hole corresponding to the recessed hole, and a limiting hole with a diameter smaller than the locking hole is provided above the locking hole; the T-shaped protrusion on the elastic unit connector passes through the locking hole and is inserted into the recessed hole of another elastic unit connector, and the button is pressed until the T-shaped protrusion is locked by the limiting hole, thereby realizing the interconnection of the elastic units.

18. A resilient module according to claim 13, characterized in that, The plug is a protrusion, the socket is a groove, the groove is fitted with a knob, and the knob has a space for the protrusion to engage with the groove. The protrusion engages with the groove, and rotating the knob until the protrusion is locked enables the elastic units to connect with each other.

19. The elastic module according to claim 1, characterized in that: The third connecting part includes a first connecting structure and a second connecting structure, which are respectively disposed on different elastic units; the first connecting structure of the elastic unit is connected to the second connecting structure of another elastic unit to realize the connection of the elastic module.

20. A resilient module according to claim 19, characterized in that: The first connection structure is configured as a plug-in, and the second connection structure is configured as a socket. The plug-in and the socket are connected by a male and female connection to realize the connection between the elastic units. The plug has a rotatable protrusion, and the socket is a concave hole. When the protrusion rotates to be misaligned with the concave hole, the first connecting structure is connected to the second connecting structure. When the protrusion rotates to be aligned with the concave hole, the first connecting structure is disconnected from the second connecting structure.

21. The elastic module according to claim 1, characterized in that: The third connection part consists of a male end and a female end. The male and female ends of two adjacent elastic units are connected to each other to connect multiple elastic units into an elastic module. The female end has a slot for the male end to be inserted along the width direction of the elastic unit and for being limited and engaged in the opposite direction of insertion; the male end includes an insertion section for inserting into the slot and a limiting section rotatably connected to the insertion section; the limiting section rotates relative to the insertion section from a first position to a second position under the action of an external force, and when the limiting section is in the second position, the limiting section and the female end are limited and engaged in the height direction of the elastic unit.

22. The elastic module according to claim 21, characterized in that: The limiting segment is arranged on the upper and lower sides of the insertion segment along the height direction of the elastic unit.

23. The elastic module according to claim 21, characterized in that: The female end is provided with a positioning protrusion, and the male end is provided with a positioning groove that mates with the positioning protrusion; when the limiting segment is in the second position, the positioning protrusion is placed in the positioning groove.

24. The elastic module according to claim 21, characterized in that: The slot has an opening on the side facing the male end, and the two side walls of the opening extend in a direction that approaches each other to form a limiting wall; the distance between the two limiting walls is less than the width of the insertion segment, so as to limit the engagement of the insertion segment in the opposite direction of insertion after the insertion segment is inserted into the slot.

25. A resilient module according to any one of claims 21-24, characterized in that: The connecting module is a waist ring, and two male ends and two female ends are arranged sequentially at 90° intervals on the side of the waist ring.

26. The elastic module according to claim 1, characterized in that: The second connecting part is a rotating symmetrically arranged screw groove, and the first connecting part is a pin placed in the screw groove; the upper spring or the lower spring moves between a first position and a second position along the direction of extension of the screw groove under the action of external force; when the upper spring or the lower spring is in the first position, the pin is released from the limiting engagement with the screw groove; when the upper spring or the lower spring is in the second position, the pin is limited to the screw groove in the opposite direction of the insertion of the pin.

27. The elastic module according to claim 26, characterized in that: The swivel groove is divided into a first part and a second part that are interconnected. The width of the first part is greater than the width of the largest part of the insertion post, and the width of the second part is less than the width of the largest part of the insertion post.

28. The elastic module according to claim 27, characterized in that: When the upper or lower spring is in the first position, the insertion post is placed in the first part; when the upper or lower spring is in the second position, the insertion post is placed in the second part.

29. The elastic module according to claim 28, characterized in that: The insert is divided into an insertion part and a limiting part; the width of the insertion part is greater than the width of the limiting part.

30. An elastic pad, characterized in that, It includes an additional surface layer and an elastic module as described in any one of claims 1-29, wherein the additional surface layer can be laid on the elastic module.

31. An elastic pad according to claim 30, characterized in that: Flexible straps are arranged at intervals around the periphery of the additional surface layer. One end of each flexible strap is fixed to the additional surface layer, and the other end is connected to the insertion card holder. The plug-in socket engages with the third connecting part on the adjacent edge of the elastic module to secure the additional surface layer.

32. An elastic pad according to claim 31, characterized in that: The additional surface layer is an elastic layer.

33. A type of furniture, characterized in that, The furniture comprises an elastic module as described in any one of claims 1-29, or an elastic pad as described in any one of claims 30-32.

34. The furniture according to claim 33, characterized in that, The furniture is either a bed or a chair.

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