Sponge and air mattresses

Abstract

Sponges and air mattresses are provided. [Solution] A sponge body (1) is provided with multiple cutting slits (12), which cut the sponge body into multiple geometric sponge blocks (11) to cut gaps in the sponge. The sponge can be expanded after applying external force, forming gaps. These gaps correspond to the holes formed after cutting sponge blocks using conventional vertical punching. Compared to air mattresses that use a technique to drill holes throughout the sponge, this invention eliminates the need for drilling holes; it only requires cutting. When expanded by applying external force, corresponding gaps (i.e., corresponding to conventional holes) are formed. Furthermore, when the sponge of this invention is combined with the air mattress body, a corresponding pattern can be formed. This saves the material corresponding to the sponge blocks that would otherwise be discarded after punching, essentially eliminating waste and being more environmentally friendly.

Description

[Technical Field]

[0001] The present invention belongs to the technical field of fluid mattresses, particularly sponges, and further relates to the manufacturing process of air mattresses and sponges. [Background technology]

[0002] Currently, there are air mattresses in the prior art that are filled with sponge as the entire interior layer, which are more comfortable and cold-resistant than pure air mattresses. However, because the air mattress has a sponge layer as the entire interior layer, the weight of the mattress increases significantly, making it less convenient to use.

[0003] To reduce the weight of the mattress and improve its softness and comfort, the sponge inside the mattress can be punched vertically. By aligning the punched holes with the corresponding positions on the sponge, various patterns can be formed. Therefore, for the same area, the presence of holes can achieve the purpose of weight reduction, high selectivity, and easy portability.

[0004] However, in the actual manufacturing process, the applicant discovered that the process of drilling holes throughout the sponge to manufacture it causes the problem of wasting some of the sponge residue, which reduces the utilization rate of the sponge and is not environmentally friendly as it wastes the sponge residue. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide a sponge and an air mattress at the same time, in order to solve the above problems existing in the prior art. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided a sponge having a sponge body formed by a plurality of interconnected geometric sponge blocks, wherein in a normal state the sponge body is integral, and when an external force is applied, some of the sponge blocks rotate and the remaining sponge blocks move, thereby expanding the sponge body and forming gaps between adjacent sponge blocks.

[0007] In some embodiments, the sponge body is provided with a plurality of cutting slits, which cut the sponge body into a plurality of geometrical sponge blocks, and there is at least one connection between each adjacent sponge block, so that the sponge body can be cut into a plurality of sponge blocks, and when an external force is applied, the sponge blocks expand in all directions, increasing their area, and the connection can connect two adjacent sponge blocks.

[0008] In some embodiments, when an external force is applied to the sponge body to expand it, the sponge blocks and gaps form a regular geometric pattern.

[0009] In some embodiments, the sponge is made of polyurethane foam material, which makes the sponge more suitable for gas-fillable outdoor and home mattresses.

[0010] According to another aspect of the present invention, there is provided an unfolded sponge, which is attached to the fabric in an unfolded form so that gaps are formed between adjacent sponge blocks in a normal state.

[0011] By spreading the sponge and pasting it on the fabric, a gap can be formed, which usually corresponds to the sponge hole after cutting by vertical punching.

[0012] In some embodiments, the density of the sponge body is 14 to 50 kg / m 3 .

[0013] In some embodiments, the thickness of the sponge body ranges from 2.5 to 25 cm.

[0014] According to another aspect of the present invention, there is provided an air mattress comprising an air mattress body and an expanded sponge, the sponge being filled into the air mattress body and having a pattern formed on the air mattress body.

[0015] According to another aspect of the present invention, there is provided a process for manufacturing a sponge, comprising the steps of: S1: Debug the cutting device and cutting cutter, and install the cutting cutter on the cutting device. S2: The whole sponge to be cut is placed under the cutting device, which cuts the sponge. S3: When cutting is completed, multiple cutting slits are formed in the sponge body.

[0016] In some embodiments, further steps include: S4: Apply an external force to the cut sponge body to expand it, forming gaps between adjacent sponge blocks. S5: Attach the unfolded sponge body to the fabric. [Effects of the Invention]

[0017] 1. The sponge of the present invention can be cut with gaps, and after applying external force, the sponge can be expanded and gaps are formed, which correspond to the holes in the sponge after cutting by conventional vertical punching.

[0018] 2. Compared with air mattresses that use the technology of drilling holes throughout the sponge, this invention does not require drilling holes, but only requires cutting. When external force is applied to expand it, a corresponding gap (i.e., a corresponding hole corresponding to a conventional hole) can be formed. Furthermore, when the sponge of this invention is combined with the air mattress body, a corresponding pattern can be formed. This saves the material corresponding to the sponge block that would otherwise be discarded after punching, basically generating no waste and being more environmentally friendly. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a schematic diagram of the structure of a sponge according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view of the sponge shown in FIG. 1. [Figure 3] FIG. 3 is a schematic diagram of the structure of the sponge shown in FIG. 2 after it has been unfolded. [Figure 4] FIG. 2 is a diagram illustrating the development process of the sponge shown in FIG. 1. [Figure 5] FIG. 2 is a diagram illustrating the development process of the sponge shown in FIG. 1. [Figure 6] FIG. 2 is a diagram illustrating the development process of the sponge shown in FIG. 1. [Figure 7] FIG. 2 is a diagram illustrating the development process of the sponge shown in FIG. 1. [Figure 8] 3 is a structural schematic diagram of a sponge according to another embodiment of the present invention; [Figure 9] FIG. 9 is a diagram illustrating the development process of the sponge shown in FIG. 8. [Figure 10] FIG. 9 is a diagram illustrating the development process of the sponge shown in FIG. 8. [Figure 11] FIG. 9 is a diagram illustrating the development process of the sponge shown in FIG. 8. [Figure 12] FIG. 9 is a diagram illustrating the development process of the sponge shown in FIG. 8. [Figure 13] 3 is a structural schematic diagram of a sponge according to another embodiment of the present invention; [Figure 14] FIG. 14 is a diagram showing the development process of the sponge shown in FIG. 13. [Figure 15] FIG. 14 is a diagram showing the development process of the sponge shown in FIG. 13. [Figure 16] FIG. 14 is a diagram showing the development process of the sponge shown in FIG. 13. [Figure 17] FIG. 14 is a diagram showing the development process of the sponge shown in FIG. 13. [Figure 18] 3 is a structural schematic diagram of a sponge according to another embodiment of the present invention; FIG. [Figure 19] 3 is a structural schematic diagram of a sponge according to another embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following clearly and completely describes the technical solutions of the embodiments of the present invention with reference to the accompanying drawings of the embodiments of the present invention. Of course, the embodiments described here are only a part, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments that those skilled in the art can obtain without creative efforts are also included in the protection scope of the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art of the present invention. Terms used in the specification of the present invention are used solely for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0022] The present invention will be described in general below.

[0023] The sponge has a sponge body 1 formed by a plurality of interconnected geometric sponge blocks 11. Under normal conditions, when no external force (including fixing methods such as pasting) is applied to the sponge body 1, the sponge body 1 is integral and there is a certain degree of elasticity between the sponge blocks 11, so there is no gap between two adjacent sponge blocks 11 (specifically, a gap means the space formed between two adjacent sponge blocks 11). When an external force is applied, some of the sponge blocks 11 rotate and the remaining sponge blocks 11 move, causing the sponge body 1 to expand, and after the sponge body 1 expands, a gap (a gap means the space formed between two adjacent sponge blocks 11) is formed between the adjacent sponge blocks 11.

[0024] The sponge body 1 is provided with a plurality of cutting slits 12, which can cut the sponge body 1 into a plurality of geometric sponge blocks 11, with at least one connection between each sponge block 11 and an adjacent sponge block 11, so that the sponge body 1 can be cut into a plurality of sponge blocks 11; when a corresponding external force is applied (the external force may be in the form of "pulling" or pasting), the sponge block 11 expands in all directions, its area increases, and the connection can connect two adjacent sponge blocks 11.

[0025] The cutting slits are preferably made by a cutter. Of course, the cutting slits may be made in other ways, but whichever way is used, it is sufficient that the cutting slits can be made in the sponge body 1 and that gaps can be formed between adjacent sponge blocks 11 after the sponge body 1 is unfolded by applying an external force.

[0026] Before the external force is applied to the sponge body 1, the cutting slit 12 is a narrow slit, and the cutting slit 12 forms a space between two adjacent sponge blocks 11. After the external force is applied and released, the cutting slit 12 generally does not fully recover, but only partially recovers, due to the characteristics of the sponge body 1. In other words, after the external force is applied and released, a gap of a certain size is formed, and the width of the gap may be understood to be between the width of the gap after it is fully expanded and the width of the cutting slit.

[0027] After applying an external force to unfold the sponge body 1, the multiple sponge blocks 11 and the gaps form a regular geometric pattern. This geometric pattern is related to the positions of the cutting slits, and in the actual manufacturing process, the positions and number of the cutting slits can be calculated and set based on the pattern to be formed after the sponge body 1 is unfolded.

[0028] The sponge body 1 is made of polyurethane foam material. Sponges made of such materials are more suitable for gas-fillable outdoor mattresses and home mattresses. In other embodiments, other materials may be used as the material for the sponge body 1 according to actual usage needs.

[0029] In order to more intuitively reflect the sponge of the present invention, the following specific graphics are also provided for explanation: In order to make the graphics more intuitive, some graphics in this application are represented in gray and white, as shown in Figure 4, the gray parts represent sponge blocks 11, the white parts represent gaps, and so on. [Example]

[0030] <First Example> The present invention will be described in more detail below in conjunction with specific embodiments shown in FIGS.

[0031] As shown in Figures 1 to 7, a specific sponge has a sponge body 1, which is formed from a plurality of triangular sponge blocks 11 and a hexagonal sponge block 11. Specifically, a plurality of cutting slits are formed in the sponge body 1. Here, in a normal state where no external force is applied, the sponge body 1 is integral. "Integrated" means that the sponge blocks 11 on the sponge body 1 are connected to each other, and when no external force is applied to the sponge body 1, each sponge block 11 has a certain elasticity, so the width of the cutting slits 12 becomes very small, or even zero. When an external force is applied, some of the sponge blocks 11 rotate, and the remaining sponge blocks 11 move, expanding the sponge body 1. After the sponge body 1 is expanded, gaps 121 are formed between adjacent sponge blocks 11.

[0032] As can be seen with reference to Figures 2 and 3, the cutting slits 12 can cut the sponge body 1 into a plurality of geometric sponge blocks 11. As can be seen from Figures 4 to 7, a triangular sponge block 11 can be formed for every three cutting slits 12 in this embodiment, and at the same time, as can be seen from Figures 2 and 3, a hexagonal sponge block 11 is further formed for every six cutting slits 12, with each triangular sponge block 11 having three adjacent hexagonal sponge blocks 11, and similarly, each hexagonal sponge block 11 having six triangular sponge blocks 11. When an external force is applied to the sponge body 1, a regularly arranged combination of triangles and hexagons can be formed.

[0033] There are connections between each triangular sponge block 11 and the adjacent hexagonal sponge block 11, and the symbols A, B, and C in Figures 4 to 7 indicate the connections, and when an external force is applied, the sponge blocks 11 expand in all directions, further increasing their area. At the same time, the connections can connect two adjacent sponge blocks 11.

[0034] As shown in Figures 4 to 7, a counterclockwise rotational external force can be applied to unfold multiple sponge blocks 11 according to the process shown in Figures 4 to 7. Figure 7 shows the state after full unfolding, and Figures 5 and 6 show the state during unfolding, where multiple sponge blocks 11 and gaps form a regular geometric pattern. As a specific pattern, as shown in Figure 3, three corners of each triangular sponge block 11 may be connected to one hexagonal sponge block 11 via connectors, and six corners of each corresponding hexagonal sponge block 11 may also be connected to one triangular sponge block 11 via connectors.

[0035] In this embodiment, the sponge body 1 is made of polyurethane foam material. A sponge made of such material is more suitable for gas-fillable outdoor mattresses and home mattresses. In other embodiments, other materials may be used as the material for the sponge body 1 according to actual usage needs.

[0036] The development process of the present invention will be described in detail below with reference to FIGS.

[0037] 1. Before unfolding, as shown in Figure 4, with triangular geometric unit 1 shown in Figure 4 as the central axis, the connecting points A, B, and C, i.e., the three acute angles of triangular geometric unit 1, begin to rotate around the center point of triangular geometric unit 1 in the direction indicated by the arrows, and in this process, the hexagonal geometric blocks 2, 3, and 4 connected to them are pushed out to the periphery. At the same time, as shown in Figure 5, the long lines that make up the triangular geometric unit begin to open, and the gaps gradually form rectangular gaps (holes).

[0038] When the triangular geometric unit 1 is rotated to the angle shown in Figure 6, the hexagonal geometric blocks 2, 3, and 4 are pushed further in, the larger the square gap (cavity) becomes.

[0039] When the triangular geometric unit 1 is rotated to the angle shown in Figure 7, the square hole approaches a right-angled rectangle, and the connection points A, B, and C rotate around the triangular geometric unit 1 to reach a fully expanded state. At this time, the number of geometric bodies within the unit area is the smallest, and the expanded area of ​​the cut sponge block 11 is the largest. [Example]

[0040] <Second Example> The present invention will be described in more detail below in conjunction with specific embodiments shown in FIGS.

[0041] As shown in Figures 8 to 12, a specific sponge has a sponge body 1, which is a geometric sponge block 11 formed by interconnecting multiple triangular sponge blocks 11 and Y-shaped sponge blocks 11. Specifically, multiple cut slits are formed in the sponge body 1, and in a normal state in which no external force is applied, the sponge body 1 is integral. "Integrated" means that the sponge blocks 11 on the sponge body 1 are connected to each other, and when no external force is applied to the sponge body 1, the width of the cut slits becomes very small, or even zero. When an external force is applied, some of the sponge blocks 11 rotate and the remaining sponge blocks 11 move, expanding the sponge body 1. After the sponge body 1 is expanded, gaps are formed between adjacent sponge blocks 11.

[0042] As can be seen with reference to Figures 8 to 12, the cutting slits can cut the sponge body 1 into a plurality of geometric sponge blocks 11. In this embodiment, the cutting slits 12 are bent, and each of the three bent cutting slits 12 can form a partially triangular sponge block 11. Similarly, the three bent cutting slits 12 can be surrounded by a Y-shaped sponge block 11, and each triangular sponge block 11 can have three adjacent Y-shaped sponge blocks 11. Similarly, each Y-shaped sponge block 11 can have three adjacent triangular sponge blocks 11. When an external force is applied to the sponge body 1, a combination of regularly arranged triangular sponge blocks 11 and Y-shaped sponge blocks 11 can be formed.

[0043] There is a connection between each triangular sponge block 11 and the adjacent Y-shaped sponge block 11. In Figures 9 to 12, the symbols A, B, and C denote the connection parts, and when an external force is applied, the sponge blocks 11 expand in all directions, further increasing their area. At the same time, the connection parts can connect two adjacent sponge blocks 11.

[0044] As shown in Figures 9 to 12, a counterclockwise rotational external force can be applied to unfold multiple sponge blocks 11 according to the process shown in Figures 9 to 12. Figure 12 shows the state after full unfolding, and Figures 10 and 11 show the state during unfolding, where multiple sponge blocks 11 and gaps form a regular geometric pattern. As shown in Figure 12, the specific pattern may be such that the three corners of each triangular sponge block 11 are connected to a Y-shaped sponge block 11 via connectors, and the three sides of the corresponding Y-shaped sponge block 11 are also connected to a triangular sponge block 11 via connectors.

[0045] In this embodiment, the sponge body 1 is made of polyurethane foam material. A sponge made of such material is more suitable for gas-fillable outdoor mattresses and home mattresses. In other embodiments, other materials may be used as the material for the sponge body 1 according to actual usage needs.

[0046] The development process of the present invention will be described in detail below with reference to FIGS. That is, the three acute angles of the triangular geometric unit 1 begin to rotate around the center point of the triangular geometric unit 1 along the direction indicated by the arrow, and in this process, the Y-shaped geometric blocks 2, 3, and 4 connected to it are pushed out to the periphery. At the same time, the triangular geometric unit begins to open, and the gaps gradually form a bent-shaped gap (hole / cavity), as shown in Figure 10.

[0047] When the triangular geometric unit 1 is rotated to the angle shown in FIG. 11, the geometric blocks 2, 3, 4 of the folded shape are pushed further in, the larger the gaps (cavities) in the folded shape become.

[0048] When the triangular geometric unit 1 is rotated to the angle shown in Figure 12, the bent-shaped hole reaches its maximum size, and the connection points A, B, and C rotate around the triangular geometric unit 1 to reach a fully expanded state. At this time, the number of geometric bodies within the unit area is the smallest, and the expanded area of ​​the cut sponge block 11 is the largest. [Example]

[0049] <Third Example> The present invention will be described in more detail below in conjunction with specific embodiments shown in FIGS.

[0050] As shown in Figures 13 to 17, a specific sponge has a sponge body 1, which is formed with a geometric sponge block 11 in which a plurality of small square sponge blocks 11 and a plurality of large square sponge blocks 11 are interconnected. Specifically, a plurality of cut slits are formed in the sponge body 1, and in a normal state in which no external force is applied, the sponge body 1 is integral. "Integrated" means that the sponge blocks 11 on the sponge body 1 are connected to each other, and when no external force is applied to the sponge body 1, the width of the cut slit becomes very small, or even zero. When an external force is applied, some of the sponge blocks 11 rotate, and the remaining sponge blocks 11 move, causing the sponge body 1 to unfold. After the sponge body 1 unfolds, gaps are formed between adjacent sponge blocks 11.

[0051] As can be seen with reference to Figures 13 to 17, the cutting slits can cut the sponge body 1 into a plurality of geometric sponge blocks 11. In this embodiment, the cutting slits 12 are straight lines, and each of four cutting slits 12 can form a small square sponge block 11 (of course, it can also be rectangular, etc.). Similarly, four cutting slits 12 can be surrounded by large square sponge blocks 11, and each small square sponge block 11 can have four adjacent large square sponge blocks 11. Similarly, each large square sponge block 11 can have four adjacent large square sponge blocks 11. When an external force is applied to the sponge body 1, a combination of regularly arranged small square sponge blocks 11 and large square sponge blocks 11 can be formed.

[0052] There are connections between each small square sponge block 11 and the adjacent large square sponge block 11. In Figures 13 to 17, the symbols A, B, and C denote the connections, and when an external force is applied, the sponge blocks 11 expand in all directions, further increasing their area. At the same time, the connections can connect two adjacent sponge blocks 11.

[0053] As shown in Figures 14 to 17, a counterclockwise rotational external force is applied to unfold multiple sponge blocks 11 according to the process shown in Figures 14 to 17. Figure 17 shows the state after full unfolding, while Figures 15 and 16 show the state during unfolding, with the multiple sponge blocks 11 and gaps forming a regular geometric pattern. A specific pattern, as shown in Figure 17, may be such that the four corners of each small square sponge block 11 are connected to one large square sponge block 11 via connectors, and the four sides of the corresponding large square sponge block 11 are also connected to one small square sponge block 11 via connectors.

[0054] In this embodiment, the sponge body 1 is made of polyurethane foam material. A sponge made of such material is more suitable for gas-fillable outdoor mattresses and home mattresses. In other embodiments, other materials may be used as the material for the sponge body 1 according to actual usage needs.

[0055] The development process of the present invention will be described in detail below with reference to FIGS.

[0056] 1. Before unfolding, as shown in Figure 14, with small square geometric unit 1 shown in Figure 14 as the central axis, connecting points A, B, and C, i.e., the four right angles of small square geometric unit 1, begin to rotate around the center point of small square geometric unit 1 in the direction indicated by the arrows, and in this process, large square geometric blocks 2, 3, 4, and 5 connected to them are pushed out to the periphery. At the same time, as shown in Figure 15, the long lines that make up the small square geometric unit begin to open, and the gaps gradually form parallelogram-shaped gaps (holes and caves).

[0057] When the small square geometric unit 1 is rotated to the angle shown in Figure 16, the larger the gap (cavity) in the parallelogram becomes, the further the large square geometric blocks 2, 3, 4, and 5 are pushed in.

[0058] When the small square geometric unit 1 is rotated to the angle shown in Figure 17, the parallelogram cavity reaches its maximum size, and the connection points A, B, and C rotate around the small square geometric unit 1 to reach a fully expanded state. At this time, the number of geometric bodies within the unit area is the smallest, and the expanded area of ​​the cut sponge block 11 is the largest.

[0059] From the above, it can be seen that the shape and size of the cut pattern can be changed by changing the number and position of the cut slits, so that after the sponge is unfolded in the XY axis direction, it will present a graphic structure with mesh holes of various sizes and graphics, as shown in Figures 18 and 19.

[0060] The key point of this invention is that the sponge body 1 is provided with cutting slits 12, and at the same time, external force is applied to the sponge body 1 to rotate the cutting slits 12 to form gaps. Finally, the gaps and sponge blocks can form a geometric pattern.

[0061] The area of ​​the expanded sponge body 1 can be adjusted depending on the number and position of the cutting slits, and the expanded area of ​​the sponge body 1 after cutting will be 1.1 to 2 times its original size, and accordingly can be adjusted to be within the range of 10% to 100% enlarged from the original size.

[0062] The present invention, by using cutting slits, can generate much less waste than conventional vertical punching techniques, significantly reducing the cost of sponge materials and subsequent processing, and significantly improving the utilization rate of sponge. It also reduces waste generation and carbon emissions during production, thereby achieving the concept of green environmental protection to some extent.

[0063] The depth of the gap (hole) is the thickness (through-hole state) of the sponge body 1 or sponge block 11, and in all technical proposals, the minimum distance between two adjacent gaps (holes) is 2 to 8 mm.

[0064] The geometrically shaped sponge block 11, which serves as the axis of rotation, must rotate 30 to 90 degrees to fully unfold. When the mechanical force is removed and the sponge is placed on the platform, it contracts slightly in its natural state compared to when it is fully unfolded, but the sponge will not return to its unfolded state if no inward force is applied to the sponge.

[0065] There does not need to be a non-rotational geometric sponge block 11 to be pushed aside, but there must be an axis geometric sponge block 11.

[0066] In this invention, the sponge can be fixed to the fabric by a specific adhesive process in the unfolded state to make a gas-fillable product. For example, the sponge of this invention can be applied to an air mattress or other mat after being fully unfolded. The sponge of this invention mainly serves to protect the sponge itself.

[0067] According to another aspect of the present invention, there is provided an unfolded sponge, which is attached to a fabric in an unfolded form so that in a normal state, there are gaps between adjacent sponge blocks 11. This unfolded sponge differs from the previously described sponges only in that the unfolded sponge includes fabric and, whereas in a normal state there are gaps between adjacent sponge blocks 11, the previously described sponges only have gaps in the normal state. The normal state here refers to a state in which no external force is applied.

[0068] By spreading the sponge and pasting it on the fabric, a gap can be formed, which usually corresponds to the sponge hole after cutting by vertical punching.

[0069] In addition, this embodiment can also provide an air mattress comprising an air mattress body and an expanded sponge, the sponge being filled into the air mattress body and cooperating with the gaps to form a pattern. The air mattress here is merely one specific example of an application scenario for the sponge of the present application, and the sponge of the present application can also be applied to other mats (e.g., seat cushions, yoga mats, etc.).

[0070] According to another aspect of the present invention, there is provided a process for manufacturing a sponge, comprising the steps of: S1: Debug the cutting device and cutting cutter, and install the cutting cutter on the cutting device. S2: The whole sponge to be cut is placed under the cutting device, which cuts the sponge. S3: When cutting is completed, multiple cut slits are formed in the sponge body 1.

[0071] In some embodiments, further steps include: S4: An external force is applied to the cut sponge body 1 to unfold the sponge body 1, forming gaps between adjacent sponge blocks 11. S5: The unfolded sponge body 1 is attached to the fabric.

[0072] The sponge of the present invention can be cut with a gap, and after applying an external force, the sponge can be expanded and a gap is formed, which corresponds to the hole in the sponge after cutting by conventional normal vertical punching.

[0073] Compared with air mattresses that use the technology of punching holes throughout the sponge, this invention does not require punching holes, and simply cuts the foam to form the corresponding holes when unfolded. Furthermore, when the foam of this invention is combined with the air mattress body, a corresponding pattern can be formed. This saves the material that would otherwise be discarded after punching out the foam holes, essentially eliminating waste and being more environmentally friendly.

[0074] The present invention is not limited to any of the above-mentioned embodiments, and anyone can obtain various other forms of products under the inspiration of the present invention, but regardless of any changes in shape or structure, all technical solutions included within the scope defined in the claims of the present invention are included in the protection scope of the present invention. [Explanation of symbols]

[0075] 1 sponge body, 11 sponge block, 12 cutting slit

Claims

1. The sponge comprises a sponge body (1) formed by a plurality of interconnected geometric sponge blocks (11), wherein the sponge body (1) is integral in a normal state, and when an external force is applied, some of the sponge blocks (11) rotate and the remaining sponge blocks (11) move, thereby expanding the sponge body (1), and when an external force is applied, gaps are formed between adjacent sponge blocks (11).

2. 2. The sponge according to claim 1, characterized in that the sponge body (1) is provided with a plurality of cutting slits (12), which cut the sponge body (1) into a plurality of geometric sponge blocks (11), and there is at least one connection between a sponge block (11) and an adjacent sponge block (11).

3. 3. The sponge according to claim 2, wherein when the sponge body (1) is expanded by applying an external force, the plurality of sponge blocks (11) and gaps form a regular geometric pattern.

4. 4. The sponge of claim 3, wherein the sponge is made of a polyurethane foam material.

5. A sponge in an unfolded state, comprising a fabric and the sponge according to any one of claims 1 to 4, wherein the sponge is attached to the fabric in an unfolded form so that gaps are formed between adjacent sponge blocks (11) in a normal state.

6. The sponge in the unfolded state according to claim 5, characterized in that the density of the sponge body (1) is 14 to 50 kg / m3.

7. The unfolded sponge according to claim 6, characterized in that the thickness of the sponge body (1) is in the range of 2.5 to 25 cm.

8. An air mattress comprising an air mattress body and the expanded sponge according to claim 5, wherein the sponge is filled into the air mattress body and a pattern is formed on the air mattress body.

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