A collapsible cushion

Abstract

The utility model discloses a telescopic cushion, including the pad body, the pad body is the component made of elastic material, be provided with a plurality of telescopic holes no.

Description

Technical Field

[0001] This utility model relates to the field of sponge pad technology, and in particular to a stretchable pad. Background Technology

[0002] A mattress is an item placed between the human body and a bed to ensure that consumers get healthy and comfortable sleep.

[0003] In the prior art, Chinese patent document with authorization announcement number CN222737593U discloses a high-elastic latex sponge pad, including an upper sponge pad, with multiple upper holes penetrating between the two ends of the upper sponge pad, a lower sponge pad at the bottom of the upper sponge pad, and multiple lower holes penetrating between the two sides of the lower sponge pad. Both the upper and lower holes are filled with silicone blocks. An upper latex sponge base pad is fixedly connected to the top of the upper sponge pad, and a lower latex sponge base pad is fixedly connected to the bottom of the lower sponge pad. Multiple anti-slip strips are provided on the upper surface of the upper latex sponge base pad and the lower surface of the lower latex sponge base pad. Multiple ventilation holes are provided on the silicone blocks.

[0004] However, existing sponge pads have poor elasticity, making it difficult to compress them as a whole during packaging, transportation, and compression, resulting in a large space occupation. Furthermore, during compression and storage, the stress of the simply perforated pad is concentrated in a localized area when compressed. Therefore, it is necessary to improve this structure to overcome these shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a retractable mattress that addresses the problem of stress concentration in localized areas when a simple perforated mattress is compressed and stored during the compression process.

[0006] The above-mentioned technical objective of this utility model is achieved by the following technical solution:

[0007] A retractable mat includes a mat body made of elastic material. The mat body has multiple retractable holes, each with the same height as the mat body. The retractable holes are positioned along the height of the mat body and penetrate through it. The inner surface of each retractable hole includes two opposing straight sections, two adjacent arc sections, and two adjacent arc sections. When the retractable holes are in a retractable state, the straight sections are in contact with each other, the arc sections are in contact with each other, and the arc sections are in contact with each other.

[0008] A further feature of this invention is that the pad body is provided with a plurality of telescopic holes II, the height of the telescopic holes II is the same as the height of the pad body, the telescopic holes II are arranged along the height direction of the pad body and penetrate the pad body, the inner side of the telescopic holes II includes a straight section III and a straight section IV arranged opposite to each other, and an arc section V and an arc section VI arranged adjacent to each other. When the telescopic holes II are in the telescopic state, the straight section III and the straight section IV are in contact with each other, and the arc section V and the arc section VI are in contact with each other.

[0009] A further feature of this invention is that the length of the first straight segment and the length of the second straight segment are the same.

[0010] A further feature of this invention is that the arc surface of arc segment one faces the inner side of telescopic hole one, and the arc surface of arc segment two faces the outer side of telescopic hole one. When arc segment one and arc segment two are in contact, the arc surfaces of arc segment one and arc segment two that are in contact have the same radius of curvature as the arc surface of arc segment two.

[0011] A further feature of this invention is that the arc surface of arc segment three faces the inner side of the telescopic hole one, and the arc surface of arc segment four faces the outer side of the telescopic hole one. When arc segment three and arc segment four are in contact, the arc surfaces of arc segment three and arc segment four that are in contact have the same radius of curvature as the arc surface of arc segment four.

[0012] A further feature of this invention is that the length of straight segment three is the same as the length of straight segment four.

[0013] A further feature of this invention is that the arc surface of arc segment five faces the inner side of the telescopic hole two, and the arc surface of arc segment six faces the outer side of the telescopic hole two. When arc segment five and arc segment six are in contact, the arc surfaces of arc segment five and arc segment six that are in contact have the same radius of curvature as the arc surface of arc segment six.

[0014] In summary, this utility model has the following beneficial effects:

[0015] This application uses a combination structure of multiple straight segments and multiple circular arc segments to form phased contact during compression. The straight segments restrict lateral deformation and disperse longitudinal stress, while the inner and outer circular arc segments guide stress to be evenly distributed along the curved surface through progressive contact with curvature matching, thereby reducing volume occupation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0018] Figure 3 This is the front view of this utility model.

[0019] Figure 4 This is a schematic diagram of the folded state of this utility model.

[0020] Numerical labels: Pad 100, Expansion Hole 10, Straight Section 11, Straight Section 2 12, Arc Section 1 13, Arc Section 2 14, Arc Section 3 15, Arc Section 4 16, Expansion Hole 2 20, Straight Section 3 21, Straight Section 4 22, Arc Section 5 23, Arc Section 6 24. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.

[0022] In traditional foam pad structures, the deformation capacity of the elastic material is limited by the internal perforation design, making it impossible to achieve uniform stress distribution and controllable expansion and contraction. During expansion and contraction, the perforated structure causes stress concentration at the edges of the pores, leading to localized material fatigue and plastic deformation. Simultaneously, the overall expansion rate is limited by the geometric stiffness of the pore walls, failing to meet the requirements for efficient space storage. To address these issues, this application proposes a stretchable pad.

[0023] Example 1:

[0024] like Figures 1 to 4 As shown, the present invention proposes a retractable mat, including a mat body 100, which is a component made of elastic material. The mat body 100 is provided with a plurality of retractable holes 10, the height of which is the same as the height of the mat body 100. The retractable holes 10 are arranged along the height direction of the mat body 100 and penetrate through the mat body 100. The inner side of the retractable hole 10 includes a straight section 11 and a straight section 2 12 arranged opposite to each other, an arc section 13 and an arc section 2 14 arranged adjacent to each other, and an arc section 3 15 and an arc section 4 16 arranged adjacent to each other. When the retractable hole 10 is in the retractable state, the straight section 11 and the straight section 2 12 are in contact, the arc section 13 and the arc section 2 14 are in contact, and the arc section 3 15 and the arc section 4 16 are in contact.

[0025] Specifically, the inner surface of the telescopic hole 10 consists of six parts: two straight sections and four arc sections. Straight section 11 is located on the upper side of the telescopic hole 10, and straight section 212 is located on the lower side of the telescopic hole 10, with the two sections facing each other. Arc sections 13 and 214 are adjacent to each other on the left side of the telescopic hole 10, and arc sections 315 and 416 are adjacent to each other on the right side of the telescopic hole 10.

[0026] The arc surfaces of arc segments 13 and 35 face the inside of the expansion joint 10, while the arc surfaces of arc segments 2 and 4 face the outside of the expansion joint 10. This design allows the arc segments to fit together under compression, forming a closed curved surface structure.

[0027] The elastic material can be polyurethane foam or silicone, which can deform under external force and return to its original shape after the force is removed. The opposite arrangement of straight sections 11 and 12 means that the two straight sections are symmetrically distributed along the axis of the hole on the inner side of the expansion hole 10. When straight sections 11 and 12 contact, they form a surface-to-surface fit, limiting excessive lateral deformation during expansion and contraction. The adjacent arrangement of arc sections 13 and 14 means that arc sections 13 and 14 form a continuous transition surface on one side of straight sections 11 and 12. This can be achieved by a combination of convex and concave surfaces with matching radii of curvature. When arc sections 13 and 14 contact, the inner and outer curved surfaces guide the direction of expansion and contraction. The adjacent arrangement of arc segment 3 15 and arc segment 4 16 means that arc segment 3 15 and arc segment 4 16 form a continuous transition surface on the other side of straight segment 1 11 and straight segment 2 12. When arc segment 3 15 and arc segment 4 16 come into contact, the direction of extension and contraction is guided by the cooperation of the inner and outer curved surfaces.

[0028] In summary, this application utilizes a combination structure of multiple straight segments and multiple circular arc segments to achieve phased contact during compression. The straight segments restrict lateral deformation and disperse longitudinal stress, while the inner and outer circular arc segments guide stress to a uniform distribution along the curved surface through progressive contact with matching curvature, reducing the volume occupied and minimizing material costs during manufacturing.

[0029] The specific usage process is as follows: When the sponge pad is under pressure, the expansion hole 10 begins to compress. The straight section 11 contacts the straight section 2 12, the arc section 13 contacts the arc section 2 14, and the arc section 3 15 contacts the arc section 4 16. The combination of the straight and arc sections achieves progressive compression. The straight sections provide linear support, while the arc sections guide the material to bend in a predetermined direction, making the compression process smoother. After the pressure is released, the pad 100 returns to its original shape due to the elastic properties of the material.

[0030] Example 2:

[0031] In this embodiment, the pad 100 is also provided with a plurality of telescopic holes 20. The height of the telescopic holes 20 is the same as the height of the pad 100. The telescopic holes 20 are arranged along the height direction of the pad 100 and penetrate the pad 100. The inner side of the telescopic holes 20 includes a straight section 3 21 and a straight section 4 22 arranged opposite to each other, and an arc section 5 23 and an arc section 6 24 arranged adjacent to each other. When the telescopic holes 20 are in the telescopic state, the straight section 3 21 and the straight section 4 22 are in contact with each other, and the arc section 5 23 and the arc section 6 24 are in contact with each other.

[0032] When the pad 100 is compressed, the expansion hole 20 compresses synchronously with the pad 100, and the straight sections 21 and 22 gradually come into contact, forming a surface contact support structure. Adjacent arc sections 23 and 24 come into contact through their curvature-matched arc surfaces during compression, dispersing compressive stress and avoiding the risk of cracking due to localized stress concentration. The combined design of the straight and arc sections ensures a reasonable distribution of compressive stress between the support and deformation areas.

[0033] Example 3:

[0034] The length of straight section 11 is the same as the length of straight section 12. During compression, the contact surfaces of straight section 11 and straight section 12 form a continuous linear contact area, which is uniformly distributed along the height direction of expansion hole 10.

[0035] Example 4:

[0036] The arc surface of arc segment 13 faces the inside of the expansion hole 10, and the arc surface of arc segment 2 14 faces the outside of the expansion hole 10. When arc segment 13 and arc segment 2 14 are in contact, the arc surfaces of arc segment 13 and arc segment 2 14 that are in contact have the same radius of curvature as the arc surfaces of arc segment 2 14.

[0037] Specifically, when the expansion hole 10 is in a compressed state, the arc segment 13 is constrained in the inward direction and deforms, while the arc segment 14 is constrained in the outward direction, forming a complementary contact surface. Since the radius of curvature of the contact surface is limited to match that of the arc segment 14, the geometry of the contact surface perfectly matches, thereby eliminating gaps or misalignments. The radii of curvature of the arc segments 13 and 14 can be designed according to the overall dimensions of the pad 100 and the expected degree of compression to ensure optimal fit under compression.

[0038] Through the above technical solution, this application achieves precise fitting of arc segment 13 and arc segment 14 under compression. This results in a more uniform stress distribution during compression, avoiding structural deformation caused by localized stress concentration.

[0039] Example 5:

[0040] The arc surface of arc segment three 15 is set towards the inside of the expansion hole one 10, and the arc surface of arc segment four 16 is set towards the outside of the expansion hole one 10. When arc segment three 15 and arc segment four 16 are in contact, the arc surfaces of arc segment three 15 and arc segment four 16 that are in contact have the same radius of curvature as the arc surfaces of arc segment four 16.

[0041] Specifically, during compression, as arc segment three 15 bends inward, its arc surface gradually approaches the arc surface of arc segment four 16, which bends outward. Since the radii of curvature of their contact surfaces are the same, the geometry of the contact surfaces perfectly matches, avoiding line contact or localized point contact caused by curvature differences. When the compressive force reaches a preset threshold, the contact surfaces form a surface contact state, and the compressive stress is evenly distributed throughout the entire contact area.

[0042] Example 6:

[0043] The length of straight section 3 21 is the same as the length of straight section 4 22. This ensures that the two straight sections of expansion hole 2 20 can achieve completely symmetrical contact during compression, avoiding misalignment or localized compression caused by length differences.

[0044] Example 7:

[0045] The arc surface of arc segment 5 23 faces the inside of the expansion hole 2 20, and the arc surface of arc segment 6 24 faces the outside of the expansion hole 2 20. When arc segment 5 23 and arc segment 6 24 are in contact, the arc surfaces of arc segment 5 23 and arc segment 6 24 that are in contact have the same radius of curvature as the arc surfaces of arc segment 6 24.

[0046] The arc surface of arc segment five 23 faces inward toward the inner side of the expansion hole two 20, while the arc surface of arc segment six 24 faces outward toward the outer side of the expansion hole two 20. When arc segment five 23 and arc segment six 24 are in contact, the radius of curvature of the arc surfaces of arc segment five 23 and arc segment six 24 are the same as that of arc surface six 24. The arc surface of arc segment five 23 can be designed to be concave, while the arc surface of arc segment six 24 can be designed to be convex. The radius of curvature of arc segment five 23 can be designed to perfectly match the radius of curvature of arc segment six 24. Under compression, arc segment five 23 contracts inward, while arc segment six 24 expands outward, forming a tightly fitting contact surface. This design ensures that during compression, arc segments five 23 and six 24 can deform uniformly along their respective curvature directions, avoiding the problem of local stress concentration.

[0047] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0048] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A retractable mat, comprising a mat body, characterized in that, The pad is a component made of elastic material. The pad is provided with multiple expansion holes. The height of the expansion holes is the same as the height of the pad. The expansion holes are arranged along the height direction of the pad and penetrate the pad. The inner side of the expansion hole includes a straight section 1 and a straight section 2 arranged opposite each other, an arc section 1 and an arc section 2 arranged adjacently, and an arc section 3 and an arc section 4 arranged adjacently. When the expansion hole is in the expansion state, the straight section 1 and the straight section 2 are in contact, the arc section 1 and the arc section 2 are in contact, and the arc section 3 and the arc section 4 are in contact.

2. The retractable mat according to claim 1, characterized in that, The pad is also provided with a plurality of telescopic holes II. The height of the telescopic holes II is the same as the height of the pad. The telescopic holes II are arranged along the height direction of the pad and penetrate the pad. The inner side of the telescopic holes II includes a straight section III and a straight section IV arranged opposite to each other, and an arc section V and an arc section VI arranged adjacent to each other. When the telescopic holes II are in the telescopic state, the straight section III and the straight section IV are in contact with each other, and the arc section V and the arc section VI are in contact with each other.

3. The retractable mat according to claim 1, characterized in that, The length of the first straight segment is the same as the length of the second straight segment.

4. A retractable mat according to claim 1, characterized in that, The arc surface of the first arc segment is set towards the inside of the first telescopic hole, and the arc surface of the second arc segment is set towards the outside of the first telescopic hole. When the first arc segment and the second arc segment are in contact, the arc surfaces of the first arc segment and the second arc segment have the same radius of curvature as the arc surfaces of the second arc segment.

5. A retractable mat according to claim 1, characterized in that, The arc surface of arc segment three is set towards the inside of the telescopic hole one, and the arc surface of arc segment four is set towards the outside of the telescopic hole one. When arc segment three and arc segment four are in contact, the arc surfaces of arc segment three and arc segment four that are in contact have the same radius of curvature as the arc surface of arc segment four.

6. A retractable mat according to claim 2, characterized in that, The length of the straight segment three is the same as the length of the straight segment four.

7. A retractable mat according to claim 2, characterized in that, The arc surface of arc segment five is set towards the inside of the telescopic hole two, and the arc surface of arc segment six is ​​set towards the outside of the telescopic hole two. When arc segment five and arc segment six are in contact, the arc surfaces of arc segment five and arc segment six that are in contact have the same radius of curvature as the arc surface of arc segment six.

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