SPRING ASSEMBLY FOR CUSHION AND THE CUSHION

Description

RELATED APPLICATIONS

This application is a continuation of International Patent Application PCT/CN2024/110555, filed on Aug. 8, 2024, which claims priority to Chinese Patent Application 202310992067.7, filed on Aug. 8, 2023. International Patent Application PCT/CN2024/110555 and Chinese Patent Application 202310992067.7 are incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to the technical field of furniture cushions, and in particular relates to a spring assembly for a cushion and the cushion.

BACKGROUND OF THE DISCLOSURE

As an elastic structure, cushions are generally used on mattresses, sofas, chairs, and other upholstered furniture. The elastic structure can provide cushioned support for people sitting or lying on the cushion, and the elastic structure generally refers to a spring structure.

Existing spring cushions are formed by mutually joining multiple rows of pocketed coil springs. A joining method involves independently loading a single coil spring into a sleeve, sealing the coil spring inside the sleeve through ultrasonic welding to form a single pocket, then performing a welding process of independent pockets to form a series of the independent pocketed coil springs. These independent pocketed coil springs are combined row by row. Each row of the independent pocketed coil springs is aligned and is then fixed using glue to form a vertically arranged and aligned spring structure.

In the series of the independent pocketed coil springs, each of the independent pockets containing the coil springs is connected by a closed edge, forming a compact connection method. This connection method results in significant mutual interference between the various pocketed springs, affecting comfort of the cushion. During long-term use, local collapse of the cushion is likely to occur due to excessive interference, which affects user experience and a service life of the mattress.

BRIEF SUMMARY OF THE DISCLOSURE

To solve the aforementioned problems, ensure independence between various springs, and reduce mutual interference between the springs, the present disclosure provides a spring assembly for a cushion and the cushion, and adopts the following technical solutions.

A spring assembly for a cushion, the spring assembly for the cushion comprise multiple rows of independent flexible material-wrapped spring module groups. Adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups are detachably connected by a connecting member, and independent springs in the adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups are springs of a same type or springs of different types. The adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups have endpoints arranged in an aligned arrangement or in a staggered arrangement, and at least one disconnection area is disposed at a joint side of two adjacent springs in the independent flexible material-wrapped spring module groups. A preset gap is formed between the adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups connected by the connecting member.

In a preferred embodiment, a main fastener and a row fastener disposed on opposite sides of the connecting member, the main fastener of the connecting member is snap-connected with a row fastener of another connecting member to form a slot, and the slot is used for clamping the independent flexible material-wrapped spring module groups.

In a preferred embodiment, a plurality of through holes are disposed at intervals between the main fastener and the row fastener of the connecting member, and when the connecting member connects the independent flexible material-wrapped spring module groups, the plurality of through holes and the independent springs are staggered.

In a preferred embodiment, the connecting member comprises one or more webbing straps and one or more plug-in fasteners, and the one or more webbing straps are wrapped around and fixed to the independent flexible material-wrapped spring module groups. The multiple rows of the independent flexible material-wrapped spring module groups form the spring assembly of the cushion by plugging adjacent two of the one or more webbing straps with the one or more plug-in fasteners, and the one or more plug-in fasteners are disposed at positions corresponding to the independent springs in the independent flexible material-wrapped spring module groups.

In a preferred embodiment, the one or more webbing straps comprise a plurality of strip-shaped notches along circumferential directions of the one or more webbing straps, and one of the one or more plug-in fasteners comprise two strip-shaped clamping pins. The two strip-shaped clamping pins are respectively plugged into one of the plurality of strip-shaped notches out of two of the one or more webbing straps to form a connection between the adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups.

In a preferred embodiment, the connecting member comprises a primary fastener and an auxiliary fastener that are snap-connected to each other, and the primary fastener is disposed on a first row of the adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups. The auxiliary fastener is disposed on a second row of the adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups.

In a preferred embodiment, the independent springs in the independent flexible material-wrapped spring module groups comprise a columnar spring and a reverse waist drum-shaped spring, and the independent springs in a single row of the multiple rows of the independent flexible material-wrapped spring module groups are the columnar spring or the reverse waist drum-shaped spring. The adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups are arranged and combined by selecting one or two of the columnar spring and the reverse waist drum-shaped spring.

In a preferred embodiment, the independent flexible material-wrapped spring module groups comprise independent flexible material wrapping members and the independent springs inside the independent flexible material wrapping members. A single row of the multiple rows of the independent flexible material-wrapped spring module groups is formed by connecting every two of the independent flexible material wrapping members containing the independent springs, and every two of the independent flexible material wrapping members are fixedly connected or detachably connected by the connecting member.

In a preferred embodiment, the at least one disconnection area is disposed at any position on the joint side, and a length of the at least one disconnection area is set to be less than or equal to one-third of a length of a connecting area on the joint side.

A cushion, the cushion comprises the spring assembly for the cushion. A bottom fabric cover, the spring assembly, a flexible cushion layer, and a top fabric cover are sequentially disposed from bottom to top along a height direction of the cushion. The top fabric cover and the bottom fabric cover enclose to form a receiving cavity, and the spring assembly is placed in the receiving cavity.

In summary, the present disclosure has the following advantages.

The present disclosure provides at least one disconnection area at the joint side of the adjacent springs in the independent flexible material-wrapped spring module groups to achieve partial separation of the springs and form independently operating springs. This design can not only maintain stability of the springs, but independence of the springs is also improved, thus being more comfortable during use.

The present disclosure adopts the disconnection area that is disposed at the joint side of the two adjacent springs in the independent flexible material-wrapped spring module groups, maintains independence of force-bearing ends of the springs, reduces mutual interference between a connection of the springs, avoids local collapse of the cushion due to excessive interference, and enables long-term use.

The present disclosure uses the connecting member to connect the independent flexible material-wrapped spring module groups. Adjacent rows of the independent flexible material-wrapped spring module groups form a movable snap connection, making the disassembly and assembly of the independent flexible material-wrapped spring module groups more flexible. A connected size can be freely selected to form spring assemblies of cushions with different specifications.

The present disclosure provides two shape specifications of the independent flexible material-wrapped spring module groups, which can be freely combined to achieve a combination of independent flexible material-wrapped spring module groups with various elastic coefficients, diversifying the spring assembly in the cushion and increasing elasticity of the cushion.

The present disclosure adopts the disconnection area and the connecting member to ensure independence of the various springs, reduce mutual interference between the springs, and have an industrial applicability.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a view of a use state of a cushion of an embodiment;

FIG. 2 illustrates an exploded view of the cushion of the embodiment;

FIG. 3 illustrates a state diagram of a spring assembly in the cushion of the embodiment;

FIG. 4 illustrates a cross-sectional view of a row of independent flexible material-wrapped spring module groups of the embodiment;

FIG. 5 illustrates an arrangement diagram of multiple rows of the independent flexible material-wrapped spring module groups (with built-in columnar springs) in Embodiment 1;

FIG. 6 illustrates a diagram showing a first type of a disconnection area of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) in Embodiment 1;

FIG. 7 illustrates an enlarged view of the first type of the disconnection area of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) in Embodiment 1;

FIG. 8 illustrates a diagram showing a second type of the disconnection area of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) in Embodiment 1;

FIG. 9 illustrates an enlarged view of the second type of the disconnection area of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) in Embodiment 1;

FIG. 10 illustrates an arrangement diagram of an assembly of a row of independent flexible material-wrapped spring module groups (with built-in columnar springs) with a connecting member in Embodiment 2;

FIG. 11 illustrates an arrangement diagram of multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) assembled with connecting members in Embodiment 2;

FIG. 12 illustrates an arrangement diagram of an assembly of the row of the independent flexible material-wrapped spring module groups (with built-in reverse waist drum-shaped springs) with the connecting member in Embodiment 2;

FIG. 13 illustrates an arrangement diagram of the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in reverse waist drum-shaped springs) in Embodiment 2;

FIG. 14 illustrates an arrangement diagram of a spring assembly of a cushion formed by the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in reverse waist drum-shaped springs) in Embodiment 2;

FIG. 15 illustrates an arrangement diagram of an assembly of multiple rows of independent flexible material-wrapped spring module groups (with built-in reverse waist drum-shaped springs) with connecting members in Embodiment 3;

FIG. 16 illustrates a diagrammatic view of a connecting member in Embodiment 3;

FIG. 17 illustrates an arrangement diagram of an aligned assembly of the multiple rows of the independent flexible material-wrapped spring module groups (with built-in columnar springs) in Embodiment 3;

FIG. 18 illustrates an arrangement diagram of a staggered assembly of the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) with the connecting members in Embodiment 3;

FIG. 19 illustrates an arrangement diagram of the staggered assembly of the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) in Embodiment 3;

FIG. 20 illustrates an arrangement diagram of an alternate connection of multiple rows of independent flexible material-wrapped spring module groups (with built-in columnar springs and reverse waist drum-shaped springs) in Embodiment 4;

FIG. 21 illustrates a staggered arrangement diagram of the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs and the reverse waist drum-shaped springs) in Embodiment 4;

FIG. 22 illustrates an arrangement diagram of a spring assembly of a cushion formed by the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs and the reverse waist drum-shaped springs) in Embodiment 4;

FIG. 23 illustrates an arrangement diagram of an assembly of a row of independent flexible material-wrapped spring module groups (with built-in columnar springs) with a connecting member in Embodiment 5;

FIG. 24 illustrates an arrangement diagram of an assembly of multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) with the connecting member in Embodiment 5;

FIG. 25 illustrates an arrangement diagram of a spring assembly of a cushion formed by the multiple rows of the independent flexible material-wrapped spring module groups (with the built-in columnar springs) in Embodiment 5; and

FIG. 26 illustrates an enlarged diagrammatic view of the connecting member in Embodiment 5.

• • Independent flexible material-wrapped spring module group 1; spring 11; disconnection area 12; top fabric cover 2; flexible cushion layer 3; bottom fabric cover 4; connecting member 5; main fastener 51; row fastener 52; slot 53; through hole 54; plug-in part 55; snap-in part 56; positioning groove 57; positioning block 58; webbing strap 511; plug-in fastener 512; strip-shaped notch 513; clamping pin 514; primary fastener 5111; auxiliary fastener 5112; and positioning member 570.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will be further described in detail below in combination with the accompanying drawings 1-26.

As shown in FIGS. 1-2, an embodiment of the present disclosure discloses a spring assembly for a cushion. The spring assembly is used to be placed in the cushion to provide elasticity for the cushion and can provide cushioned support for people sitting or lying on the cushion.

The cushion composed of the spring assembly comprises a top fabric cover 2 and a bottom fabric cover 4. The top fabric cover 2 and the bottom fabric cover 4 are enclosed to form a receiving cavity for placing the spring assembly.

Further, a flexible cushion layer 3 is laid between the top fabric cover 2 and the spring assembly. The flexible cushion layer 3 increases an overall softness of the cushion, provides the softness for people sitting or lying on the cushion, and improves comfort of use. The flexible cushion layer 3 increases fluffiness of the upwardly placed top fabric cover 2, further enhancing overall three-dimensional effects of the cushion.

In this embodiment, the spring assembly serves as a support structure of the cushion. As shown in FIG. 3, the spring assembly comprises multiple rows of independent flexible material-wrapped spring module groups 1 arranged in an array. A plurality of the independent flexible material-wrapped spring module groups 1 are connected two by two using a connecting member 5 to form the spring assembly. The present disclosure adds the connecting member 5 to an assembly of the independent flexible material-wrapped spring module groups 1 to realize a movable assembly between the independent flexible material-wrapped spring module groups 1.

As shown in FIG. 4, each of the independent flexible material-wrapped spring module groups 1 comprises a spring 11 and an independent flexible material wrapping member 13. The independent flexible material wrapping member 13 is used to wrap the spring 11. Settings of the spring 11 in the independent flexible material wrapping member 13 include a columnar spring and a reverse waist drum-shaped spring. A shape of the independent flexible material wrapping member 13 is adapted to a shape of the spring 11 inside the independent flexible material wrapping member 13.

Every two of independent flexible material wrapping members 13 are fixedly connected or detachably connected by the connecting member 5. To ensure independence of the spring 11, after every two of the independent flexible material wrapping members 13 are connected, at least one disconnection area 12 is disposed at a joint side of adjacent two of the independent flexible material wrapping members 13. The at least one disconnection area 12 is used to ensure that part of individual springs 11 between a connection of a group of the independent flexible material-wrapped spring module groups 1 in the spring assembly forms an independent elastic working state.

Further, a height of the connecting member 5 is set to be lower than a height of the independent flexible material wrapping members 13. An optimal position for the connecting member 5 is a middle position of the independent flexible material-wrapped spring module groups 1. When the independent flexible material wrapping members 13 are connected using the connecting member 5, the at least one disconnection area 12 is formed between the adjacent two of the independent flexible material wrapping members 13 at a part not connected by the connecting member 5. At the same time, there is a certain gap between adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups 1 connected by the connecting member 5, so that the independent flexible material wrapping members 13 and the springs 11 therein in each mutual connection can maintain independence of the individual springs 11 during connection. This design can not only maintain stability of the build-in springs 11 but also improve independence of the springs 11. When ends of the springs 11 are under stress, interference from adjacent springs 11 under stress can be reduced. Moreover, the independence of the springs 11 can further improve elasticity of the cushion to be more comfortable to use.

Further, when forming the spring assembly of the cushion, the independent flexible material-wrapped spring module groups 1 in each row of the multiple rows of the independent flexible material-wrapped spring module groups 1 are configured to be a same type, and are all configured to be the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs or the independent flexible material-wrapped spring module groups 1 wrapping the reverse waist drum-shaped springs. When the multiple rows of the independent flexible material-wrapped spring module groups 1 are connected, two adjacent rows of the independent flexible material-wrapped spring module groups 1 are all configured to be the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs or the independent flexible material-wrapped spring module groups 1 wrapping the reverse waist drum-shaped springs, or the two adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups 1 are configured to be an alternate arrangement of the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs and the independent flexible material-wrapped spring module group 1 wrapping the reverse waist drum-shaped springs. A form of the arrangement form is configured to be adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups 1 arranged with endpoints of the independent flexible material-wrapped spring module groups 1 in an aligned arrangement or in a staggered arrangement.

In Embodiment 1, the adjacent two in the independent flexible material wrapping members 13 form the independent flexible material-wrapped spring module groups 1 using sonic welding. The plurality of independent flexible material-wrapped spring module groups 1 are combined in the rows. Adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups 1 are fixedly connected with glue or the sonic welding to form the orderly arranged spring assembly of the cushion.

Further, a cross-section of the at least one disconnection area 12 is V-shaped along a height direction of the independent flexible material-wrapped spring module groups 1. The at least one disconnection area 12 of the independent flexible material wrapping members 13 and the springs 11 wrapped therein has a structure whose width gradually shrinks from one end at a connection joint to the other end to form the V-shaped disconnection area 12.

In Embodiment 1, the at least one disconnection area 12 in the spring assembly is arranged as follows. A first arrangement is shown in FIGS. 5-7. After every two of the independent flexible material wrapping members 13 of the independent flexible material-wrapped spring module groups 1 are connected, both heads and tails of the every two of the independent flexible material wrapping members 13 are disconnected in a V configuration. A second arrangement is shown in FIGS. 8-9. After every two of the independent flexible material wrapping members 13 are connected, heads of the every two of the independent flexible material wrapping members 13 are disconnected in a V configuration. That is, when an entire row of the springs is wrapped by the independent flexible material wrapping members 13 and then welded by sonic welding, and V-shaped parts at heads and tails of the independent flexible material wrapping members 13 are cut off after welding with middles being connected. Alternatively, the heads of the every two of the independent flexible material wrapping members 13 are disconnected in a V configuration, and middles and tails of the every two of the independent flexible material wrapping members 13 are connected. Middles of the independent flexible material wrapping members 13 between adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups 1 are bonded with the glue or the sonic welding with heads and tails being separated. Alternatively, the middles and the tails of the independent flexible material wrapping members 13 between adjacent rows of the multiple rows of the independent flexible material-wrapped spring module groups 1 are bonded with the heads being separated.

The heads or the heads and tails of the independent flexible material wrapping members in the independent flexible material-wrapped spring module groups 1 form the at least one disconnection area 12, and this design can not only maintain stability of the springs but also improve independence of the springs. When ends of the springs are under stress, the interference from the adjacent springs under stress can be reduced. Moreover, the independence of the springs can further improve the elasticity of the cushion to be more comfortable to use.

In Embodiment 2, a row buckle snap structure is used as the connecting member 5 for fixing. As shown in FIGS. 10-13, a main fastener 51 and a row fastener 52 are disposed on opposing sides of the connecting member 5. A main fastener 51 of a first connecting member 5 is connected and fixed to a row fastener 52 of a second connecting member 5 via a snap connection. The main fastener 51 and the row fastener 52 are disposed on the opposing sides of the connecting member 5. The main fastener 51 of the first connecting member 5 is connected and fixed to the row fastener 52 of the second connecting member 5 to form slots 53 via the snap connection. The slots 53 are used for clamping the independent flexible material-wrapped spring module groups 1.

Further, with respect to multiple of the independent flexible material wrapping members in the independent flexible material-wrapped spring module groups 1, the slots 53 disposed on the main fastener 51 and the row fastener 52 are in one-to-one correspondence with groove notches being arranged in opposite directions. One of the independent flexible material wrapping members 13 is placed in one of the slots 53, and corresponding ones of the slots 53 of the main fastener 51 and the row fastener 52 are fastened together to form a position-limiting fixation of the independent flexible material-wrapped spring module groups 1.

The connecting member 5 is fastened to the multiple of the independent flexible material wrapping members 13 via multiple of the slots 53 to form a row of the independent flexible material-wrapped spring module groups 1. Two of the independent flexible material-wrapped spring module groups 1 in adjacent rows of the multiple rows form the spring assembly of the cushion via a snap connection of the main fastener 51 of the first connecting member 5 with the row fastener 52 of the second connecting member 5, as shown in FIG. 14.

As shown in FIGS. 10-11, the independent flexible material-wrapped spring module groups 1 wrap the columnar springs. As shown in FIGS. 12-13, the independent flexible material-wrapped spring module groups 1 wrap the reverse waist drum-shaped springs. The connecting member 5 comprises plug-in parts 55 and snap-in parts 56 on one side of the slots 53. The plug-in parts 55 are disposed on one side of the slots 53 corresponding to the main fastener 51, and the snap-in parts 56 are disposed on one side of the slots 53 corresponding to the row fastener 52. The snap connection of the main fastener 51 and the row fastener 52 is achieved by plugging the snap-in parts 56 with the plug-in parts 55.

Further, positioning members 570 are disposed at two ends of the main fastener 51 and the row fastener 52. The positioning members 570 comprise positioning grooves 57 disposed on a first one of the main fastener 51 and the row fastener 52 and positioning blocks 58 disposed on a second one of the main fastener 51 and the row fastener 52 to be easily positioned and snap-connected.

In Embodiment 2, a plurality of through holes 54 are disposed at intervals on a central axis of the connecting member 5. The plurality of through holes 54 and the slots 53 are arranged in a staggered manner. The plurality of through holes 54 are used for the snap connection of the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs. An arrangement of the plurality of through holes 54 can achieve an assembled structure in which the columnar springs and the reverse waist drum-shaped springs are alternately connected. When no columnar spring is arranged in the plurality of through holes 54, the plurality of through holes 54 can act as a buffer for the springs to further separate a distance between every adjacent two of the independent flexible material-wrapped spring module groups 1, weaken mutual interference between the independent flexible material-wrapped spring module groups 1, and also play a role in breathability of the mattress.

In Embodiment 3, as shown in FIGS. 15-19, the connecting member 5 comprises one or more webbing straps 511 and one or more plug-in fasteners 512. The one or more webbing straps 511 are wrapped and fixed around waists of the independent flexible material-wrapped spring module groups 1. Further, multiple of the one or more webbing straps 511 are disposed on multiple of the independent flexible material wrapping members 13 corresponding to the independent flexible material-wrapped spring module groups 1, and one of the one or more webbing straps 511 is disposed on one of the independent flexible material wrapping members 13. Adjacent two of the one or more webbing straps 511 are connected via one of the one or more plug-in fasteners 512.

Two adjacent independent flexible material-wrapped spring module groups 1 in a row of the independent flexible material-wrapped spring module groups 1 are connected via the one or more plug-in fasteners 512 and the one or more webbing straps 511. Two of the independent flexible material-wrapped spring module groups 1 in adjacent rows are connected via the one or more plug-in fasteners 512 and the one or more webbing straps 511.

A plurality of strip-shaped notches 513 are disposed on one of the one or more webbing straps 511 along circumferential directions of the one or more webbing straps 511. One of the one or more plug-in fasteners 512 comprises two strip-shaped clamping pins 514. The two strip-shaped clamping pins 514 are respectively plugged into one of the plurality of strip-shaped notches 513 out of two of the one or more webbing straps 511 to form a connection between two of the independent flexible material-wrapped spring module groups 1. An installation position between the adjacent two of the independent flexible material-wrapped spring module groups 1 can be freely adjusted using the plurality of strip-shaped notches 513 disposed on the one or more webbing straps 511, so that the independent flexible material-wrapped spring module groups 1 have endpoints aligned or staggered during assembly.

In Embodiment 4, as shown in FIGS. 20-22, the connecting member 5 comprise one or more webbing straps 511 and one or more plug-in fasteners 512. An alternate assembly of the springs with different specifications is formed according to a type of the independent flexible material-wrapped spring module groups 1 fixed by the one or more webbing straps 511, which includes an alternate connection of the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs and the independent flexible material-wrapped spring module groups 1 wrapping the reverse waist drum-shaped springs in two of the independent flexible material-wrapped spring module groups 1 in adjacent rows. Moreover, the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs and the independent flexible material-wrapped spring module groups 1 wrapping the reverse waist drum-shaped springs are arranged in a staggered manner. Waist-shaped structures of the independent flexible material-wrapped spring module groups 1 wrapping the reverse waist drum-shaped springs are used to assemble the independent flexible material-wrapped spring module groups 1 wrapping the columnar springs in inner gaps, so as to achieve a combination of independent flexible material-wrapped spring module groups 1 with various elastic coefficients, diversify the spring assembly of the cushion, and increase elasticity of the cushion.

In Embodiment 5, as shown in FIGS. 23-26, adjacent two of the independent flexible material wrapping members 13 in a row of independent flexible material-wrapped spring module groups 1 are welded and fixed by a connecting member 5. The connecting member 5 comprises a primary fastener 5111 and an auxiliary fastener 5112 that are snap-connected to each other. The primary fastener 5111 and the auxiliary fastener 5112 are welded correspondingly on both sides of the row of the independent flexible material-wrapped spring module groups 1. Two of the independent flexible material-wrapped spring module groups 1 in adjacent rows form a spring assembly of a cushion by snap-connecting the primary fastener 5111 of a first row of the independent flexible material-wrapped spring module groups 1 with the auxiliary fastener 5112 of a second row of the independent flexible material-wrapped spring module groups 1. Adjacent rows of the independent flexible material-wrapped spring module groups 1 form a movable snap connection, making disassembly and assembly of independent flexible material wrapping members 13 more flexible. A connected size can be freely selected to form spring assemblies of cushions with different specifications.

The description merely describes preferred embodiments of the present disclosure, and this is not intended to limit the scope of protection of the present disclosure. Therefore, all equivalent variations should fall in the scope of the protection of the present disclosure provided that they are made according to the structure, the shape, and the principle of the present disclosure.