Interconnectable elastic module group and elastic pad

Abstract

An interconnectable elastic module group comprises at least two elastic modules, each of the at least two elastic modules comprises a plurality of spring units, the at least two elastic modules further comprise connecting seats sleeved on middle portions of the plurality of spring units, each of the connecting seats comprises four connecting structures, each of the four connecting structures comprises a connecting groove, the connecting groove has an inner wall and an outer wall, the connecting groove has two opposite side edges, the two opposite side edges and the outer wall of the connecting groove comprises openings, the plurality of spring units on an outer periphery of the at least two elastic modules comprise plug-in connectors inserted into the openings of the connecting grooves, and two adjacent ones of the at least two elastic modules are connected via the plug-in connectors.

Description

RELATED APPLICATIONS

[0001] This application is a continuation of International patent application PCT / CN2024 / 139443, filed on Dec. 16, 2024, which claims priority to Chinese patent application 202323413292.5, filed on Dec. 14, 2023. International patent application PCT / CN2024 / 139443 and Chinese patent application 202323413292.5 are incorporated herein by reference.FIELD OF THE DISCLOSURE

[0002] The present disclosure relates to the technical field of elastic pads, and in particular relates to an interconnectable elastic module group and an elastic pad.BACKGROUND OF THE DISCLOSURE

[0003] Furniture, such as spring beds and sofa beds, is indispensable in daily life of people. Most existing beds and sofa beds comprise elastic pads. The elastic pads have certain elasticity, and the elastic pads offer certain elastic support to possess a moderate level of comfort compared with rigid pads when a user lies on the beds and the sofa beds.

[0004] According to the 2021 New Consumption Trend Report on Mattresses, more than 49.8% of respondents reported using the same mattress for more than 5 years. However, conventional mattresses or elastic pads have fixed dimensions and cannot be resized according to user needs. Moreover, prolonged use leads to local wear and sagging, mite infestation, and other issues, forcing users to replace or clean the entire elastic pad. Such replacement or cleaning is inconvenient.BRIEF SUMMARY OF THE DISCLOSURE

[0005] An objective of the present disclosure is to overcome the deficiencies of the existing techniques by providing an interconnectable elastic module group and an elastic pad comprising the interconnectable elastic module group. Two elastic modules can be assembled or dissembled via connecting structures disposed on connecting seats, allowing users to perform partial replacement and cleaning of the elastic pad, or allowing users to resize the elastic pad according to body shape changes or other factors.

[0006] The present disclosure has the following technical solutions.

[0007] An interconnectable elastic module group comprises at least two elastic modules that are detachably interconnected, each of the at least two elastic modules comprises a plurality of spring units arranged in a matrix, the at least two elastic modules further comprise connecting seats sleeved on middle portions of the plurality of spring units, each of the connecting seats comprises four connecting structures on side surfaces of a corresponding one of the plurality of spring units, each of the four connecting structures comprises a connecting groove, the connecting groove has an inner wall and an outer wall opposite to each other in a radial direction of the corresponding one of the plurality of spring units, the connecting groove has two opposite side edges in an axial direction of the corresponding one of the plurality of spring units, the two opposite side edges and the outer wall of the connecting groove comprises openings, the plurality of spring units are assembled into a corresponding one of the at least two elastic modules by inserting connecting buckles into the connecting grooves on sides of adjacent ones of the plurality of spring units, the plurality of spring units on an outer periphery of the at least two elastic modules comprise plug-in connectors inserted into the openings of the connecting grooves, and two adjacent ones of the at least two elastic modules are connected via the plug-in connectors.

[0008] In some embodiments, each of the plug-in connectors comprises bodies inserted into a corresponding one of the connecting grooves and axle hole seats parallel to an elastic force direction of the corresponding one of the plurality of spring units, the axle hole seats of the adjacent ones of the plurality of spring units are not on a same horizontal plane, and the axle hole seats at two different heights are aligned and connected by a pin shaft.

[0009] In some embodiments, each of the plug-in connectors comprises a first plug-in connector, a second plug-in connector, and the pin shaft that are cooperatively connected, a first end of the first plug-in connector comprises two of the axle hole seats that are coaxially spaced, a first end of the second plug-in connector comprises one of the axle hole seats, the first plug-in connector and the second plug-in connector are cooperatively connected, and the one of the axle hole seats of the second plug-in connector is located between the two of the axle hole seats of the first plug-in connector.

[0010] In some embodiments, a body of the bodies on the first plug-in connector comprises two parallel insertion pieces, the two parallel insertion pieces are connected at one end of the body of the first plug-in connector, the two of the axle hole seats are formed at the one end of the body of the first plug-in connector where the two parallel insertion pieces are connected, the two parallel insertion pieces of the first plug-in connector are respectively inserted into corresponding ones of the connecting grooves on the adjacent ones of the plurality of spring units, and the two of the axle hole seats are located at a side edge of the corresponding ones of the connecting grooves.

[0011] In some embodiments, a body of the bodies on the first plug-in connector is an insertion piece, the two of the axle hole seats are formed at one end of the insertion piece, the insertion piece is inserted into a corresponding one of the openings on a side edge of the two opposite side edges of the corresponding one of the connecting grooves, and the two of the axle hole seats are located at the side edge of the two opposite side edges of the corresponding one of the connecting grooves.

[0012] In some embodiments, a body of the bodies on the second plug-in connector is an insertion piece, the one of the axle hole seats is formed at one end of the insertion piece, the insertion piece is inserted into a corresponding one of the openings on a side edge of the two opposite side edges of the corresponding one of the connecting grooves, and the one of the axle hole seats is located at the side edge of the two opposite side edges of the corresponding one of the connecting grooves.

[0013] In some embodiments, a body of the bodies on the second plug-in connector is a connecting post, a first end of the connecting post comprises the one of the axle hole seats, and a second end of the connecting post is inserted into a corresponding one of the openings on the outer wall of the corresponding one of the connecting grooves.

[0014] In some embodiments, the second plug-in connector comprises an insertion piece and a connecting post, the one of the axle hole seats is formed at a first end of the connecting post, a middle portion of the insertion piece comprises a connecting post insertion hole, a second end of the connecting post is fittingly inserted into the connecting post insertion hole, the insertion piece is inserted into a corresponding one of the openings on a side edge of the two opposite side edges of the corresponding one of the connecting grooves, the connecting post insertion hole at least partially overlaps the corresponding one of the openings on the outer wall of the corresponding one of the connecting grooves, and the connecting post is sequentially inserted into the corresponding one of the openings on the outer wall and the connecting post insertion hole.

[0015] In some embodiments, a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction, the first plug-in connector and the second plug-in connector are connected, and the one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

[0016] An elastic pad, the elastic pad comprises the interconnectable elastic module group.

[0017] The present disclosure has the following advantages.

[0018] 1. The elastic module provided by the present disclosure comprises at least two elastic modules. The at least two elastic modules are detachably interconnected via connecting structures, featuring a simple structure and convenient operation. Disassembly and assembly of the elastic modules facilitate implementation of resizing of the elastic module group, as well as partial replacement and cleaning of the elastic module group.

[0019] 2. In some preferred embodiments, the elastic modules are connected via axle holes and pin shafts, thus rendering operation simple and convenient.BRIEF DESCRIPTION OF THE DRAWING

[0020] FIG. 1 illustrates a structural schematic view of a first elastic module of Embodiment 1;

[0021] FIG. 2 illustrates a structural schematic view of a second elastic module of Embodiment 1;

[0022] FIG. 3 illustrates a structural schematic view of a second plug-in connector of Embodiment 1;

[0023] FIG. 4 illustrates a structural schematic view of a second spring unit connected to the second plug-in connector of Embodiment b 1;

[0024] FIG. 5 illustrates a structural schematic view of a first plug-in connector of Embodiment 1;

[0025] FIG. 6 illustrates a structural schematic view of a first spring unit connected to the first plug-in connector of Embodiment 1;

[0026] FIG. 7 illustrates a schematic view of a connection between the second spring unit connected to the second plug-in connector and the first spring unit connected to the first plug-in connector of Embodiment 1;

[0027] FIG. 8 illustrates a schematic view of a connection of two elastic modules of Embodiment 1;

[0028] FIG. 9 illustrates a schematic view of an elastic module group formed by connecting the two elastic modules of Embodiment 1, wherein an outer edge of a first component having the first plug-in connector is attached to an outer edge of a second component having the second plug-in connector;

[0029] FIG. 10 illustrates a top view of the elastic module group formed by assembling the two elastic modules of Embodiment 1;

[0030] FIG. 11 illustrates a structural schematic view of the elastic module group after further interconnection and extension of Embodiment 1;

[0031] FIG. 12 illustrates a perspective view of FIG. 11;

[0032] FIG. 13 illustrates a structural schematic view of an elastic module of Embodiment 2;

[0033] FIG. 14 illustrates an enlarged view of a portion A in FIG. 13;

[0034] FIG. 15 illustrates a structural schematic view of a second plug-in connector of Embodiment 2;

[0035] FIG. 16 illustrates a structural schematic view of a first plug-in connector of Embodiment 2;

[0036] FIG. 17 illustrates a schematic view of a connection of two spring units respectively connected to the second plug-in connector and the first plug-in connector of Embodiment 2;

[0037] FIG. 18 illustrates a structural schematic view of a second plug-in connector of Embodiment 3;

[0038] FIG. 19 illustrates a structural schematic view of a spring unit connected to the second plug-in connector of Embodiment 3;

[0039] FIG. 20 illustrates a structural schematic view of a first plug-in connector of Embodiment 3;

[0040] FIG. 21 illustrates a schematic view of a connection between two spring units connected to the first plug-in connectors and a spring unit connected to the second plug-in connector of Embodiment 3.

[0041] Reference numerals in the drawings: 100—elastic module; 110—spring unit; 120—filling unit; 200—connecting seat; 210—connecting groove; 211—side opening; 212—outer wall opening; 310—first plug-in connector; 320—second plug-in connector; 330—axle hole seat; 340—connecting post; 350—insertion piece; 351—connecting post insertion hole; 400—pin shaft.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] The technical solutions of the present disclosure will be further explained and described below with reference to specific embodiments.

[0043] The technical solutions in the embodiments of the present disclosure are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are preferred embodiments of the present disclosure and shall not be construed as exclusion of other embodiments. All other embodiments shall fall within the protection scope of the present disclosure provided that they are obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present disclosure.

[0044] In the claims, the specification, and the drawings of the present disclosure, unless otherwise explicitly defined, directional terms such as “height”, “upper end”, “top”, “bottom”, “inner”, “outer”, “upper”, “lower”, “front”, and “rear” indicate orientations or positional relationships based on the orientations or the positional relationships shown in the accompany drawings, which are only used to facilitate description of the present disclosure and simplify the description rather than indicating or implying that the referred device or element should have a specific orientation or be constructed and operated in the specific orientation, and thus shall not be construed as limiting the specific protection scope of the present disclosure.Embodiment 1

[0045] An interconnectable elastic module comprises elastic modules 100 that are configured to be detachably interconnected and connecting seats 200.

[0046] FIGS. 1 and 2 show structures of two elastic modules 100 in an elastic module group provided in this embodiment. Each of the elastic modules 100 comprises spring units 110 and the connecting seats 200 sleeved on middle portions of the spring units 110. As shown FIGS. 1 and 2, in this embodiment, each of the spring units 110 is a waist-contracted spring (hourglass spring), and a cross-sectional diameter of each of the spring units 110 first decreases and then increases upwardly. A corresponding one of the connecting seats 200 is sleeved on each of the middle portions of the spring units 110 with a smaller cross-sectional area, which alleviates a problem of increased spacing between the spring units 110 and decreased density of the spring units 110 in the elastic module caused by sleeving of the connecting seats 200 to a certain extent.

[0047] Each of the spring units 110 on an outer periphery of the elastic modules 100 are sleeved with a corresponding one of the connecting seats 200. Each of the connecting seats 200 comprises four connecting structures on side surfaces of a corresponding one of the spring units 110. Each of the four connecting structures comprises a connecting groove 210. The connecting groove 210 has an inner wall and an outer wall opposite to each other in a radial direction of a corresponding one of the spring units 110 and has two opposite side edges in an axial direction of the corresponding one of the spring units 110. The connecting groove 210 comprises openings on the two opposite side edges and the outer wall, namely side openings 211 and an outer wall opening 212.

[0048] Adjacent ones of the spring units 110 are aligned via the connecting grooves 210 on edges, and multiple ones of the spring units 110 in a staggered arrangement are assembled into the elastic module 100 by inserting connecting buckles (not shown in FIGS. 1 and 2). The plug-in connectors are disposed on the spring units 110 on an outer periphery of the elastic module 100. The plug-in connectors are inserted into the side openings 211 and the outer wall opening 212 of the connecting grooves 210, and adjacent two of the elastic modules 100 are connected via the plug-in connectors.

[0049] Each of the plug-in connectors comprises a first plug-in connector 310, a second plug-in connector 320, and a pin shaft 400 that are cooperatively connected. The first plug-in connector 310 and the second plug-in connector 320 are detachably disposed on the corresponding one of the connecting seats 200 via the connecting grooves 210. The first plug-in connector 310 and the second plug-in connector 320 respectively comprise axle hole seats 330 parallel to an elastic force direction of a corresponding one of the spring units 110, and the axle hole seats 330 of adjacent ones of the spring units 110 are not on a same horizontal plane. The axle hole seats 330 of the first plug-in connector 310 and the second plug-in connector 320 are aligned in the elastic force direction and connected by inserting the pin shaft 400 into axle holes 331.

[0050] As shown in FIGS. 3 and 4, a body of the second plug-in connector 320 is a connecting post 340. A first end of the connecting post 340 comprises one of the axle hole seats 330, and a second end of the connecting post 340 is inserted into the outer wall opening 212, such that the one of the axle hole seats 330 is disposed on an outer wall of the connecting groove 210.

[0051] As shown in FIGS. 5 and 6, a body of the first plug-in connector 310 is an insertion piece 350. A first end of the insertion piece 350 comprises two of the axle hole seats 330 that are coaxially spaced in the elastic force direction, and a distance between the two of the axle hole seats 330 is equal to a length of the one of the axle hole seats 330 of the second plug-in connector 320 in the elastic force direction. The first plug-in connector 310 is inserted into the side openings 211, and the two of the axle hole seats 330 are located at a side edge of the connecting groove 210.

[0052] FIGS. 7 and 8 illustrate alignment and connection between the first plug-in connector 310 and the second plug-in connector 320, as the two of the axle hole seats 330 of the first plug-in connector 310 are located at the side edge of the connecting groove 210 and the one of the axle hole seats 330 of the second plug-in connector 320 is located at the outer wall of the connecting groove 210. The spring units 110 are arranged in a staggered manner when the first plug-in connector 310 and the second plug-in connector 320 are cooperatively connected, which increases the density of the spring units 110 in the elastic module group and the elastic module 100 to provide better support and resilience.

[0053] Furthermore, the two of the axle hole seats 330 of the first plug-in connector 310 are fitted with the one of the axle hole seats 330 of the second plug-in connector 320, thus restricting relative displacement between the adjacent two of the elastic modules in the elastic force direction and enhancing connection stability. In other possible implementations, the distance between the two of the axle hole seats 330 of the first plug-in connector 310 can also be greater than the length of the one of the axle hole seats 330 of the second plug-in connector 320 in the elastic force direction.

[0054] As shown in FIGS. 7 and 8, the second plug-in connector 320 on an outer edge of a first one of the elastic modules 100 shown in FIG. 1 cooperates with the first plug-in connector 310 on an outer edge of a second one of the elastic modules 100 shown in FIG. 2, and the elastic module group as shown in FIGS. 9 and 10 is interconnected by inserting the pin shaft 400.

[0055] In this embodiment, the first plug-in connectors 310 are inserted into the connecting seats 200 sleeved on three of the spring units 110 on a first outer edge of an elastic module 100, and the second plug-in connectors 320 are inserted into the connecting seats 200 sleeved on two of the spring units 110 on a second outer edge of the elastic module 100. In other possible implementations, the two of the elastic modules 100 can be interconnected as long as the first plug-in connector 310 and the second plug-in connector 320 are respectively disposed on the outer edges of the two of the elastic modules 100. Preferably, two or more of the connecting seats 200 each connected to at least one of the first plug-in connector 310 or the second plug-in connector 320 are disposed on the outer edges of the two of the elastic modules 100, such that an interconnection between the two of the elastic modules 100 becomes more stable by a two-point or multi-point connection.

[0056] In this embodiment, each of the spring units 110 is sleeved with a corresponding one of the connecting seats 200 and connected together via the connecting structures. However, the connecting structures disposed on the spring units 110 inside the elastic modules 100 are not described in detail in this embodiment. As with the proceeding examples, the plug-in connector can take any form as long as ends of the plug-in connectors cooperate to form a detachably connectable structure, such as a matching buckle and groove.

[0057] FIGS. 11 and 12 are schematic views of the elastic module group of this embodiment after further interconnection and extension, wherein the elastic module group comprises six of the elastic modules 100.

[0058] It can be seen that the arrangement of the first plug-in connector 310 and the second plug-in connector 320 enables staggered arrangement of the spring units 110, and each of spring units 110 is adjacent to six of the spring units 110 to form a hexagonal shape. This arrangement achieves a densest arrangement of the spring units 110, thus imparting favorable support and resilience to the elastic module group. However, in this arrangement, multiple ones of the spring units 110 in the staggered arrangement can affect appearance regularity of the elastic modules 100 and the elastic module group and user experience. Therefore, in this embodiment, the elastic modules 100 further comprise filling units 120. Each of the filling units 120 is sleeved with a corresponding one of the connecting seats 200, and a connecting structure (not shown in FIGS. 11-12) is disposed on the corresponding one of the connecting seats 200 sleeved on each of the filling units 120. The filling units 120 are interconnected to outer peripheral ones of the spring units 110 via the connecting structures to render the outer edges of the elastic modules 100 more regular. Specifically, cross-sections of the filling units 120 are elliptical. On a same horizontal plane, a major axis of the cross-section of the filling units 120 is equal to a diameter of cross-sections of the spring units 110, and a minor axis of the cross-sections of the filling units 120 is equal to a radius of the cross-sections of the spring units 110. In other possible implementations, one of the spring units 110 inside the elastic modules 100 can also be adjacent to only four of the spring units 110, resulting in lower density of the spring units 110 and poorer resilience of the elastic module group compared with an embodiment in which the spring units 110 form a hexagonal shape.

[0059] In summary, the elastic module group provided in the present disclosure implements detachable interconnection between the elastic modules 100 via the connecting structures, featuring a simple structure and convenient operation. Disassembly and assembly of the elastic modules 100 facilitate implementation of resizing of the elastic module group as well as partial replacement and cleaning of the elastic module group.Embodiment 2

[0060] This embodiment differs from Embodiment 1 in that the structure of the second plug-in connector 320 and a connection method of the first plug-in connector 310 and the second plug-in connector 320 with the connecting groove 210 are different.

[0061] As shown in FIG. 15, the body of the second plug-in connector 320 is a second insertion piece 3501. One end of the second insertion piece 3501 comprises the one of the axle hole seats 330, and the second insertion piece 3501 is inserted into the side openings 211 such that the one of the axle hole seats 330 is disposed at a side edge of the connecting groove 210. The first plug-in connector 310 is shown in FIG. 16, where a structure of the first plug-in connector 310 in Embodiment 2 is the same as that in Embodiment 1.

[0062] As shown in FIGS. 13 and 14, the first plug-in connector 310 and the second plug-in connector 320 are respectively inserted into two side openings 211 of the connecting groove 210.

[0063] As shown in FIG. 17, when the elastic modules 100 are interconnected, two of the spring units 110 respectively disposed with the first plug-in connector 310 and the second plug-in connector 320 are opposed such that the first plug-in connector 310 and the second plug-in connector 320 on one of the spring units 110 are respectively aligned with the second plug-in connector 320 and the first plug-in connector 310 on another of the spring units 110, and then connected via the pin shaft 400 (not shown in FIGS. 13-17).Embodiment 3

[0064] This embodiment differs from Embodiment 1 in that the structures of the first plug-in connector 310 and the second plug-in connector 320 are different.

[0065] As shown in FIGS. 18 and 19, the second plug-in connector 320 comprises a second insertion piece 3501 and the connecting post 340. A middle portion of the second insertion piece 3501 comprises a connecting post insertion hole 351. The first end of the connecting post 340 comprises the one of the axle hole seats 330, and the second end of the connecting post 340 is fittingly inserted into the connecting post insertion hole 351. The second insertion piece 3501 is inserted into the side openings 211. The connecting post insertion hole 351 at least partially overlaps the outer wall opening 212, and the connecting post 340 is sequentially inserted into the outer wall opening 212 and the connecting post insertion hole 351. The one of the axle hole seats 330 is located on a side wall of the connecting groove 210.

[0066] As shown in FIG. 20, the body of the first plug-in connector 310 comprises two parallel third insertion pieces 3502. First ends of the two parallel third insertion pieces 3502 are connected, and the two of the axle hole seats 330 are formed at a connecting end of the two parallel third insertion pieces 3502. The two parallel third insertion pieces 3502 are respectively inserted into the side openings 211 of two adjacent ones of the connecting grooves 210, and the two of the axle hole seats 330 are located at the side edges of the connecting grooves 210. When the second plug-in connector 320 is cooperatively connected to the first plug-in connector 310, the one of the axle hole seats 330 of the second plug-in connector 320 is fitted between the two of the axle hole seats 330 of the first plug-in connector 310. The first plug-in connector 310 is not only cooperatively connected to the second plug-in connector 320 to connect two of the elastic modules, but the first plug-in connector 310 also connects two adjacent ones of the spring units 110 respectively via inserting the two parallel third insertion pieces 3502 into the two adjacent ones of the spring units 110.

[0067] As shown in FIG. 21, the two parallel third insertion pieces 3502 of the first plug-in connector 310 are respectively inserted into the side openings 211 of the two adjacent ones of the connecting grooves 210, and the two of the axle hole seats 330 are located at the side edges of the connecting grooves 210 and between the two adjacent ones of the connecting grooves 210 connected therewith. One of the spring units 110 disposed with the second plug-in connector 320 and two of the spring units 110 disposed with the first plug-in connector 310 are arranged in a staggered manner to align the axle hole seats 330 of the first plug-in connector 310 and the second plug-in connector 320, thereby completing connection via the pin shaft 400 (not shown in FIGS. 18-21).

[0068] The preceding description is only preferred specific embodiments of the present disclosure, so the implementation scope of the present disclosure is not limited thereto. Equivalent variations and modifications shall still fall within the scope covered by the present disclosure provided they are made according to the scope and specification of the present disclosure.

Claims

1. An interconnectable elastic module group, comprising:at least two elastic modules that are detachably interconnected, wherein:each of the at least two elastic modules comprises a plurality of spring units arranged in a matrix,the at least two elastic modules further comprise connecting seats sleeved on middle portions of the plurality of spring units,each of the connecting seats comprises four connecting structures on side surfaces of a corresponding one of the plurality of spring units,each of the four connecting structures comprises a connecting groove,the connecting groove has an inner wall and an outer wall opposite to each other in a radial direction of the corresponding one of the plurality of spring units,the connecting groove has two opposite side edges in an axial direction of the corresponding one of the plurality of spring units,the two opposite side edges and the outer wall of the connecting groove comprises openings,the plurality of spring units on an outer periphery of the at least two elastic modules comprise plug-in connectors inserted into the openings of the connecting grooves, andtwo adjacent ones of the at least two elastic modules are connected via the plug-in connectors.

2. The interconnectable elastic module group according to claim 1, wherein:each of the plug-in connectors comprises bodies inserted into corresponding ones of the connecting grooves and axle hole seats parallel to an elastic force direction of the corresponding one of the plurality of spring units,the axle hole seats of the adjacent ones of the plurality of spring units are not on a same horizontal plane, andthe axle hole seats at two different heights are aligned and connected by a pin shaft.

3. The interconnectable elastic module group according to claim 2, wherein:each of the plug-in connectors comprises a first plug-in connector, a second plug-in connector, and the pin shaft that are cooperatively connected,a first end of the first plug-in connector comprises two of the axle hole seats that are coaxially spaced,a first end of the second plug-in connector comprises one of the axle hole seats,the first plug-in connector and the second plug-in connector are cooperatively connected, andthe one of the axle hole seats of the second plug-in connector is located between the two of the axle hole seats of the first plug-in connector.

4. The interconnectable elastic module group according to claim 3, wherein:a body of the bodies on the first plug-in connector comprises two parallel insertion pieces,the two parallel insertion pieces are connected at one end of the body of the first plug-in connector,the two of the axle hole seats are formed at the one end of the body of the first plug-in connector where the two parallel insertion pieces are connected,the two parallel insertion pieces of the first plug-in connector are respectively inserted into corresponding ones of the connecting grooves on the adjacent ones of the plurality of spring units, andthe two of the axle hole seats are located at a side edge of the corresponding ones of the connecting grooves.

5. The interconnectable elastic module group according to claim 3, wherein:a body of the bodies on the first plug-in connector is an insertion piece,the two of the axle hole seats are formed at one end of the insertion piece,the insertion piece is inserted into a corresponding one of the openings on a side edge of the two opposite side edges of the corresponding one of the connecting grooves, andthe two of the axle hole seats are located at the side edge of the two opposite side edges of the corresponding one of the connecting grooves.

6. The interconnectable elastic module group according to claim 3, wherein:a body of the bodies on the second plug-in connector is an insertion piece,the one of the axle hole seats is formed at one end of the insertion piece,the insertion piece is inserted into a corresponding one of the openings on a side edge of the two opposite side edges of the corresponding one of the connecting grooves, andthe one of the axle hole seats is located at the side edge of the two opposite side edges of the corresponding one of the connecting grooves.

7. The interconnectable elastic module group according to claim 3, wherein:a body of the bodies on the second plug-in connector is a connecting post,a first end of the connecting post comprises the one of the axle hole seats, anda second end of the connecting post is inserted into a corresponding one of the openings on the outer wall of the corresponding one of the connecting grooves.

8. The interconnectable elastic module group according to claim 3, wherein:the second plug-in connector comprises an insertion piece and a connecting post,the one of the axle hole seats is formed at a first end of the connecting post,a middle portion of the insertion piece comprises a connecting post insertion hole,a second end of the connecting post is fittingly inserted into the connecting post insertion hole,the insertion piece is inserted into a corresponding one of the openings on a side edge of the two opposite side edges of the corresponding one of the connecting grooves,the connecting post insertion hole at least partially overlaps the corresponding one of the openings on the outer wall of the corresponding one of the connecting grooves, andthe connecting post is sequentially inserted into the corresponding one of the openings on the outer wall and the connecting post insertion hole.

9. The interconnectable elastic module group according to claim 3, wherein:a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction,the first plug-in connector and the second plug-in connector are connected, andthe one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

10. An elastic pad, wherein the elastic pad comprises the interconnectable elastic module group according to claim 1.

11. The interconnectable elastic module group according to claim 4, wherein:a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction,the first plug-in connector and the second plug-in connector are connected, andthe one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

12. The interconnectable elastic module group according to claim 5, wherein:a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction,the first plug-in connector and the second plug-in connector are connected, andthe one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

13. The interconnectable elastic module group according to claim 6, wherein:a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction,the first plug-in connector and the second plug-in connector are connected, andthe one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

14. The interconnectable elastic module group according to claim 7, wherein:a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction,the first plug-in connector and the second plug-in connector are connected, andthe one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

15. The interconnectable elastic module group according to claim 8, wherein:a distance between the two of the axle hole seats of the first plug-in connector is equal to a length of the one of the axle hole seats of the second plug-in connector in the elastic force direction,the first plug-in connector and the second plug-in connector are connected, andthe one of the axle hole seats of the second plug-in connector is fitted between the two of the axle hole seats of the first plug-in connector.

16. An elastic pad, wherein the elastic pad comprises the interconnectable elastic module group according to claim 2.

17. An elastic pad, wherein the elastic pad comprises the interconnectable elastic module group according to claim 3.

18. An elastic pad, wherein the elastic pad comprises the interconnectable elastic module group according to claim 4.

19. The interconnectable elastic module group according to claim 1, wherein: the plurality of spring units are assembled into a corresponding one of the at least two elastic modules by inserting connecting buckles into the connecting grooves on sides of adjacent ones of the plurality of spring units.

20. The interconnectable elastic module group according to claim 1, wherein: the plurality of spring units are assembled into a corresponding one of the at least two elastic modules by inserting the plug-in connector into the connecting grooves on sides of adjacent ones of the plurality of spring units.

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