Support structure

Abstract

To provide a support structure which does not need to be covered with a cover member and is strong against rubbing.SOLUTION: A support structure 10 includes: a plurality of columns of coil springs 31 arranged in a back and forth direction / a horizontal direction and stretching vertically; an upper sheet 11 covering an upper end of the many coil springs 31 spreading in the back and forth direction / the horizontal direction; and a lower sheet 21 spreading in the back and forth direction / the horizontal direction and covering a lower end of the many coil springs 31. The upper sheet 11 and the lower sheet 21 are woven fabric woven with synthetic fiber yarns or soft vinyl chloride sheets, are deposited between adjacent coil springs 31, 31 with dotted bonding points 44 at intervals, and compress the coil springs 31 vertically.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a support structure for supporting the buttocks of a sitting person, broken objects such as glass bottles, and other articles.

Background Art

[0002] Conventionally, as a support structure, the one described in Japanese Unexamined Patent Application Publication No. 2021-053380 (Patent Document 1) is known. In this structure, non-woven fabrics made of chemical fibers are used as the upper sheet and the lower sheet, and these upper sheet and lower sheet are welded to each other. A large number of coil springs are provided between the upper sheet and the lower sheet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the inventor has found that there are still points to be improved in the above conventional support structure. That is, while non-woven fabrics made of chemical fibers are easily heat-welded, they are weak against rubbing and prone to fuzzing. Therefore, from the perspective of durability, it is not preferable to use non-woven fabrics made of chemical fibers in an exposed state. The support structure described in Patent Document 1 needs to be completely covered with the cover member 101 as shown in FIG. 6. The cover member 101 is a single large cloth material that spreads flat without cuts or noticeable wrinkles, and such a single cloth material covers a large number of coil springs.

[0005] Then, as a first problem, due to the presence of the cover member 101, a large number of coil springs are inhibited from freely expanding and contracting individually, which affects the sitting comfort of the user sitting on the support structure. Therefore, the unique sitting comfort of the support structure is reduced.

[0006] As a second problem, at the manufacturing site of the support structure, in consideration of space-saving of inventory and convenience of distribution, it is planned to vacuum-pack the support structure with a transparent or semi-transparent compression bag (plastic bag) made of a polymer material. This is because in a vacuum state, a large number of coil springs contract vertically, the thickness of the support structure decreases, and compactification is achieved. The support structure shown in FIG. 6 is in the original shape of the product, and the annular shape of the coil spring end 102 is covered by the cover member 101 and is not conspicuous. However, if the vacuum state continues for a long time, there is a problem that the annular end 102 of the coil spring clearly protrudes from the cover member 101 and leaves a mark, greatly changing the appearance.

[0007] Also, the compression bag is disposable and is discarded when used. Then, there is also a problem that the appearance in the compacted state by vacuum and the appearance when released from compactification and actually used greatly change, giving a wrong impression to those who purchase the support structure for the first time. Also, regardless of the vacuum packaging, after use of the support structure, the annular end 102 of the coil spring clearly protruded from the cover member 101 and formed a large number of annular marks.

[0008] In view of the above circumstances, a first object of the present invention is to provide a support structure that does not need to be covered with a cover member and is resistant to rubbing. A second object is to provide a support structure that does not form a large number of annular marks.

Means for Solving the Problems

[0009] For this purpose, the support structure according to the present invention includes a large number of coil springs arranged in the front-rear direction and the left-right direction and expanding and contracting in the vertical direction, an upper sheet that spreads in the front-rear direction and the left-right direction and covers the upper ends of a large number of coil springs, and a lower sheet that spreads in the front-rear direction and the left-right direction and covers the lower ends of a large number of coil springs. The upper sheet and the lower sheet are a fabric made of synthetic fiber yarns or a soft vinyl chloride sheet, and are welded to each other at points at intervals between adjacent coil springs to compress the coil springs in the vertical direction.

[0010] According to the present invention, the upper sheet and the lower sheet are more resistant to rubbing than conventional non-woven fabrics. Therefore, there is no problem even if the support structure is used in a coverless state without covering the upper sheet and the lower sheet with a cover member. The coverless allows free expansion and contraction of individual coil springs and can provide a unique sitting comfort to the user of the support structure. Further, the problem of the occurrence of a large number of annular marks is fundamentally solved by the coverless.

[0011] The upper sheet and the lower sheet may be a fabric woven from synthetic fiber yarns, and the type of synthetic fiber is not particularly limited. The synthetic fiber is, for example, one or more fibers selected from nylon, aramid, vinylon, polyvinylidene chloride-based, polyvinyl chloride-based, polyester-based, polyacrylonitrile-based, acrylic, polyethylene-based, polypropylene-based, polyurethane-based, polyvinyl chloride fiber, polylactic acid fiber. Alternatively, the upper sheet and the lower sheet may be a soft vinyl chloride sheet. As a preferred aspect of the present invention, an upper felt layer provided between the upper sheet and the upper end of the coil spring and / or a lower felt layer provided between the lower sheet and the lower end of the coil spring are provided. According to such an aspect, since the upper felt layer provided between the upper sheet and the upper end of the coil spring is provided, the contact pressure between the upper sheet and the upper end of the coil spring is relaxed. Therefore, the contact surface pressure of the coil spring applied to the buttocks of the user placed on the upper sheet is relaxed, and the sitting comfort is improved. Further, since the lower felt layer provided between the lower sheet and the lower end of the coil spring is provided, the contact pressure between the lower sheet and the lower end of the coil spring is relaxed. Therefore, the tensile stress acting on the lower sheet is relaxed, and the durability of the support structure is improved. As another aspect, the upper sheet and / or the lower sheet may be in direct contact with the coil spring.

[0012] As a preferred aspect of the present invention, the upper sheet and / or the lower sheet is polyester or tarpulin. The polyester fabric has less stretchability of the fabric itself than other synthetic fiber fabrics and is suitable for the contraction of the coil spring. The same applies to tarpulin because it contains polyester fabric. The upper sheet and / or the lower sheet made of tarpulin is excellent in stain resistance.

[0013] The vacuum package of the support structure according to the present invention includes the above-described support structure and a bag body that seals the support structure in a degassed state. According to the present invention, the thickness dimension of the support structure can be made smaller than the original state by vacuum packaging, and the convenience of distribution is improved. Further, since the support structure of the present invention does not need to be covered with a cover member, the problem that a large number of annular marks are attached to the cover member due to vacuum packaging and the appearance is changed is solved.

[0014] The front-rear dimension and the left-right dimension of the support structure of the present invention are not particularly limited. Also, the number of coil springs is not particularly limited. The present invention is, in one aspect, a cushion including the above-described support structure. According to such an aspect, it is possible to gently support the user's body, fragile objects such as glass bottles, and fragile loads such as precision equipment. Therefore, it is useful when transporting passengers and cargo. The dimensions of the cushion are, for example, the same as those of a cushion, and the front-rear dimension is a predetermined value included in the range of 40 to 80 [cm]. The left-right dimension is the same.

Effects of the Invention

[0015] As described above, according to the present invention, it is possible to provide a support structure that is more resistant to rubbing than a conventional product made of a non-woven fabric of chemical fiber. Further, even when vacuum-packaged, the appearance does not change significantly from the original state. For a purchaser who visually inspects and purchases the vacuum-packaged support structure, the appearance does not change much after the vacuum packaging is opened, and there is no misunderstanding during purchase. The present invention can be used as a cushioning material for surrounding an article.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a photograph showing a support structure according to an embodiment of the present invention. FIG. 2 is a plan view showing an enlarged part of the same embodiment, and shows an enlarged structure between coil springs for easy understanding. FIG. 3 is a cross-sectional view showing the same embodiment, where (a) represents the original state, and (b) and (c) represent the usage state. FIG. 4 is a perspective view showing the usage state of the same embodiment. FIG. 5 is a cross-sectional view showing an enlarged part of the same embodiment, where (a) represents the original state and (b) represents the usage state. The original state means a state where the support structure is not subjected to any external force from the outside, and the usage state means a state where the support structure is subjected to some external force from the outside.

[0018] The support structure 10 includes an upper sheet 11, a lower sheet 21, and a plurality of coil springs 31. In the following description, it should be understood that the vertical direction, the front-rear direction, and the left-right direction are perpendicular to each other. Also, it should be understood that the vertical direction, the front-rear direction, and the left-right direction are the directions as seen from a person sitting on the upper surface of the support structure 10.

[0019] A plurality of coil springs 31 are arranged in a vertically extending posture, arranged in large numbers in the front-rear direction of the support structure 10, and also arranged in large numbers in the left-right direction, and expand and contract in the vertical direction. The coil springs 31 of the present embodiment are arranged in a grid pattern, but as a modification not shown, the coil springs 31 may be arranged alternately. The upper sheet 11 extends in the front-rear direction and the left-right direction, and covers the upper ends of a large number of coil springs 31 with one such sheet. The lower sheet 21 also extends in the front-rear direction and the left-right direction, and covers the lower ends of a large number of coil springs 31 with one such sheet.

[0020] The outer diameter φc of each coil spring 31 is a predetermined value included in the range of 40 to 45 [mm]. When the outer diameter is less than 40 [mm], the coils become dense, the weight of the support structure 10 increases, and the carrying performance deteriorates. When the outer diameter φc is greater than 45 [mm], the spring constant becomes small, and when a user sits on the support structure, the coil spring contracts to the minimum length, so-called bottoming occurs. For the same reason, the number of coil turns of each coil spring 31 is a predetermined value included in the range of 3.0 to 5.0 turns, for example, 4.0 turns.

[0021] The coil wire diameter φl of each coil spring 31 is a predetermined value included in the range of 1.3 to 1.9 [mm], and is selected from, for example, φ1.3, φ1.6, φ1.8, and φ1.9. When the coil wire diameter φl is greater than 1.9 [mm], the weight of the support structure 10 increases, and the carrying performance deteriorates. When the coil wire diameter φl is less than 1.3 [mm], the spring constant becomes small and bottoming occurs.

[0022] The number of coil windings of each coil spring 31 is a predetermined value included in the range of 3.0 to 7.0 [turns]. When the number of coil windings is greater than 5.0, the weight of the support structure 10 increases, the carrying performance deteriorates, and bottoming occurs. When the number of coil windings is less than 3.0, there is a risk that the coil spring will break through the upper and lower sheets.

[0023] The upper sheet 11 and the lower sheet 21 are fabrics woven from synthetic fiber yarns, for example, polyester fabrics, or tarpaulins, or soft vinyl chloride sheets. Referring to FIGS. 2 and 3, the upper sheet 11 and the lower sheet 21 are joined at joining points 44. The joining points 44 are arranged between adjacent coil springs 31, 31. Referring to FIG. 2, with respect to an intermediate line F passing through the center of the interval between adjacent coil springs 31, 31, the joining points 44 are arranged intermittently along the intermediate line F. Also, the shape of the joining points 44 is linear and extends along the linear intermediate line F.

[0024] The joining points 44 in the embodiment shown in FIG. 2 include a first joining point 44a and a second joining point 44b. The first joining point 44a and the second joining point 44b face each other with a non-joining portion 44c therebetween, forming a pair at two points. With respect to the intermediate line F, the non-joining portion 44c overlaps the intermediate line F, and the first joining point 44a and the second joining point 44b face each other across the intermediate line. The first joining point 44a is arranged on one side of the coil spring 31, while the second joining point 44b is arranged on the other side of the coil spring 31, and the non-joining portion 44c is arranged on the intermediate line F, that is, at a position that exactly bisects the interval between adjacent coil springs 31, 31. The intermediate line F extends so as to bisect the space between adjacent coil springs 31, 31. The intermediate line F is a straight line extending in the front-rear direction and the left-right direction and is perpendicular to each other.

[0025] On the side opposite to the side facing each other, that is, on the side close to the coil spring 31, the first joining point 44a has its corner portion 45 rounded. The same applies to the second joining point 44b. Thereby, the joining points 44 are made difficult to peel off and the durability is improved.

[0026] As shown in FIG. 2, the first joining point 44a is shaped to extend long along the intermediate line F, while being shortened in the direction crossing adjacent coil springs 31, 31. The second joining point 44b is also shaped to be elongated. By the first joining point 44a and the second joining point 44b having these elongated shapes and facing each other to form a pair, the joining points 44 strongly join the upper sheet 11 and the lower sheet 21.

[0027] As shown in Fig. 2, the joints 44 of this embodiment are provided at two locations between two adjacent coil springs 31, 31. That is, one coil spring 31 is surrounded by eight joints 44. Thereby, the upper sheet 11 and the lower sheet 21 constitute a bag for accommodating each coil spring 31.

[0028] Referring to Fig. 2, the interval J represents the interval between the joints 44 arranged in the vicinity of one coil spring 31. The interval J is not less than half of the outer diameter dimension of one coil spring 31, but is not more than the outer diameter dimension. The interval between the adjacent joints 44, 44 respectively arranged in the vicinity of different coil springs 31, 31 may be made larger than the interval J.

[0029] The upper sheet 11 and the lower sheet 21 are woven fabrics knitted with synthetic fiber yarns, are resistant to rubbing, and are excellent in durability. And the upper sheet 11 and the lower sheet 21 have appropriate air permeability and a basis weight [g / m2] for ensuring a predetermined tensile strength. Thereby, the upper sheet 11 and the lower sheet 21 are more resistant to rubbing than conventional non-woven fabrics, and there is almost no fuzzing due to long-term use. They are also resistant to contamination and can be cleaned. The support structure 10 of this embodiment can be used without being covered with the cover member 101 shown in Fig. 6. That is, the support structure 10 can be used in the coverless state shown in Fig. 1.

[0030] The joints 44 are formed by thermal welding. The welding length of the joints 44 by welding is, for example, 5 [mm]. The interval J between adjacent joints 44 is, for example, 7 [mm]. The 5 [mm] joints and the 7 [mm] intervals M are repeatedly arranged. The upper sheet 11 and the lower sheet 21 partition a space P (Fig. 5) for accommodating the coil spring 31 in a region surrounded by the joints 44, 44... arranged in the front-rear direction and the left-right direction.

[0031] Since the vertical dimension of the space P is shorter than the natural length of the coil spring 31, the upper sheet 11 and the lower sheet 21 compress the coil spring 31 therebetween. In other words, the coil spring 31 contracted between the upper sheet 11 and the lower sheet 21 pushes back the upper sheet 11 and the lower sheet 21 in a direction away from each other in the original shape state of the support structure 10 (FIG. 1, FIG. 3(a), FIG. 5(a)), and such a pushing force reduces the interval G2 between adjacent coil springs 31, 31. Thereby, the support structure 10 can have firmness and resilience in the original shape state. Even if both edges of the support structure 10 are supported and the central portion of the support structure 10 is floated, the central portion will not sag excessively and the support structure 10 will not be deformed.

[0032] In the present embodiment, the axial length of the coil spring 31 is 40 [mm] in the natural length taken out from the space P and not receiving any load, and is a predetermined value included in the range of 25 to 35 [mm] in the original shape state contracted in the space P. Alternatively, it is a predetermined value included in the range of 40 to 60 [mm] in the natural length, and is a predetermined value included in the range of 25 to 50 [mm] in the original shape state contracted in the space P. Thereby, a support structure 10 that is thin and easy to carry can be provided.

[0033] When the axial length in the original shape state is less than 25 [mm], the coil spring 31 is compressed too much, the weight of the support structure 10 increases, and the carrying performance deteriorates. On the contrary, when the axial length in the original shape state becomes greater than 50 [mm], there is a risk of bottoming.

[0034] Referring to FIG. 2, the upper sheet 11 and the lower sheet 21 have wrinkles 42 between adjacent joining points 44, 44. Referring to FIG. 3, the upper sheet 11 and the lower sheet 21 are pushed apart from each other by the coil spring 31 contracted therebetween. For this reason, in the original shape state where the support structure 10 does not receive an external force such as the weight of the user, the coil springs 31 approach each other, and a large number of wrinkles 42 are formed.

[0035] The coil spring 31 of the present embodiment is arranged in a lattice pattern in the front-rear direction and the left-right direction when viewed in the axial direction of the coil spring 31, that is, in the up-down thickness direction of the support structure 10. The joint point 44 is provided other than between the diagonally adjacent coil springs 31, 31.

[0036] Referring to FIG. 2, there are a plurality of joint points 44 arranged between the coil springs 31, 31 adjacent to each other in the front-rear direction or the left-right direction. In the present embodiment, there are two (an even number). By making the number an even number instead of an odd number, the upper sheet 11 and the lower sheet 21 are separated at the location U where the adjacent coil springs 31, 31 are closest to each other. In other words, the joint points of the upper sheet 11 and the lower sheet 21 are provided other than at the location U where the adjacent coil springs 31, 31 are closest to each other.

[0037] For ease of understanding of the invention, in FIG. 2, the intervals between the individual coil springs 31 are drawn wider. As shown in FIGS. 3(a) and 5(a), the support structure 10 in the original state is enlarged in the up-down direction and reduced in the front-rear direction and the left-right direction by the elastic force of the coil springs 31, and the joint points 44 are buried in the wrinkles 42.

[0038] As shown in FIG. 1, the support structure 10 of the present embodiment is sized like a futon, with seven coil springs arranged in the front-rear direction and eight coil springs arranged in the left-right direction. Note that the number of coil springs in the front-rear direction and the left-right direction, in other words, the front-rear dimension and the left-right dimension, are arbitrary.

[0039] Referring to FIG. 5, an upper felt layer 51 is interposed between the upper sheet 11 and the upper end of the coil spring 31. A lower felt layer 41 is interposed between the lower sheet 21 and the lower end of the coil spring 31. The upper sheet 11 and the upper felt layer 51 are arranged to overlap. The lower sheet 21 and the lower felt layer 41 are arranged to overlap. The front-rear dimension and the left-right dimension of the lower felt layer 41 and the upper felt layer 51 are substantially the same as those of the upper sheet 11 and the lower sheet 21. The upper sheet 11 and the lower sheet 21 are joined to each other at the joining point 44. The joining point 44 penetrates through the upper felt layer 51 and the lower felt layer 41. The upper felt layer 51 and the lower felt layer 41 are rich in elasticity in the thickness direction as compared with the upper sheet 11 and the lower sheet 21. The material of the felt layer is, for example, wool or animal hair. The thickness of these felt layers is preferably a predetermined value included in the range of 1 to 3 [mm] in a natural state where they do not contact each other. Thereby, the upper felt layer 51 and the lower felt layer 41 ensure cushioning properties.

[0040] The operation of this embodiment will be described.

[0041] When a user carrying the support structure 10 lays the support structure 10 on the seat or floor of a vehicle such as an automobile or a train and sits down on the upper sheet 11, the coil spring 31 pushes back the user's buttocks by the elastic force inherent in itself. According to the support structure 10 of this embodiment, it does not easily bottom out during use and provides a comfortable sitting feeling. Also, the vibration of the vehicle itself is less likely to be transmitted to the user's buttocks, reducing the user's fatigue. Also, when placing an object such as a broken glass bottle or a precision instrument instead of the above-mentioned user's buttocks on the upper sheet 11, the object can be protected from vibration.

[0042] Since the support structure 10 of this embodiment has wrinkles 42 in the original state, as shown in FIGS. 3(c) and 5(b), it can also expand and contract in the front-rear direction and the left-right direction, and can also be bent and deformed. Therefore, it can be deformed freely. The state in which the support structure 10 is deformed is shown in FIG. 4.

[0043] As shown in Fig. 1, in the support structure 10 in its original state, adjacent coil springs 31, 31 are packed in a narrow interval G1. However, in the actual support structure 10, within the narrow interval G1, there is a seat (upper sheet 11 and lower sheet 21) with a wide width G2 as shown in Fig. 2. Therefore, the distance between adjacent coil springs 31, 31 can extend beyond the interval G1 to the width G2, enabling free deformation of the support structure 10.

[0044] The support structure 10 of this embodiment includes a large number of coil springs 31 arranged in the front-rear direction and left-right direction and expanding and contracting in the vertical direction, an upper sheet 11 that extends in the front-rear direction and left-right direction and covers the upper ends of a large number of coil springs 31, 31 ···, and a lower sheet 21 that extends in the front-rear direction and left-right direction and covers the lower ends of a large number of coil springs 31, 31. The upper sheet 11 and the lower sheet 21 are woven fabrics made of synthetic fiber yarns, and are welded to each other at the joining points 44 at intervals in a dot pattern between adjacent coil springs 31, 31, compressing the coil springs 31 in the vertical direction. According to such an embodiment, the upper sheet 11 and the lower sheet 21 are more resistant to abrasion than conventional non-woven fabrics. Therefore, there is no problem even if the support structure 10 is used in the coverless state shown in Fig. 1 without covering the upper sheet 11 and the lower sheet 21 with a cover member. The coverless design allows free expansion and contraction of each individual coil spring 31, and the user can experience a unique sitting comfort. In contrast, in the comparative example shown in Fig. 6, since the support structure 10 is covered with the cover member 101, the free expansion and contraction movement of each individual coil spring 31 is inhibited by the cover member 101. Therefore, the unique sitting comfort is reduced.

[0045] In addition, since the support structure 10 of the present embodiment includes the upper felt layer 51 provided between the upper sheet 11 and the upper end of the coil spring 31, the contact pressure between the upper sheet 11 and the upper end of the coil spring 31 is alleviated. Therefore, the contact surface pressure of the coil spring 31 applied to the buttocks of the user placed on the upper sheet 11 is alleviated, improving the sitting comfort. Also, since the support structure 10 of the present embodiment includes the lower felt layer 41 provided between the lower sheet 21 and the lower end of the coil spring 31, the contact pressure between the lower sheet 21 and the lower end of the coil spring 31 is alleviated. Therefore, the tensile stress acting on the lower sheet 21 is alleviated, improving the durability of the support structure 10.

[0046] When the support structure 10 of the present embodiment is shipped from the manufacturing factory, it is preferably sealed in a degassed state in a disposable compression bag such as a bag body, a transparent or semi-transparent plastic bag, etc. By such vacuum packaging, the thickness dimension of the support structure 10 can be made smaller than the original shape (FIG. 1), improving the convenience of distribution.

[0047] Here, it should be noted that when vacuum packaging in the proportionality shown in FIG. 6, the end portion 102 of the coil spring 31 strongly hits the cover member 101, leaving a large number of annular marks on the cover member 101 and changing the appearance. When the vacuum packaging is released, the annular marks disappear after a while, but then a problem occurs that it gives a different impression from the appearance during distribution when in use. Also, regardless of the vacuum packaging, after the use of the support structure, the annular end portion 102 of the coil spring clearly protrudes from the cover member 101 and becomes a large number of annular marks, changing the appearance.

[0048] Since the present embodiment shown in FIG. 1 is coverless, a large number of annular marks do not occur even after the release of the vacuum packaging or after the use of the support structure 10, and the appearance of the upper sheet 11 and the lower sheet 21 does not change even when the support structure 10 is vacuum packaged. Therefore, there is no problem of giving an impression different from the previous appearance after the release of the vacuum packaging or after use.

[0049] The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to those of the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope or an equivalent scope of the present invention.

Industrial Applicability

[0050] The present invention is advantageously used in daily necessities and the transportation industry.

Explanation of Reference Numerals

[0051] 10 Support structure, 11 Upper sheet, 21 Lower sheet, 31 Coil spring, 41 Lower felt layer, 51 Upper felt layer, 101 Cover member, 102 Coil spring end (annular mark).

Claims

1. A plurality of coil springs arranged in the front-rear direction and the left-right direction and expanding and contracting in the vertical direction, an upper sheet that spreads in the front-rear direction and the left-right direction and covers the upper ends of the plurality of coil springs, and a lower sheet that spreads in the front-rear direction and the left-right direction and covers the lower ends of the plurality of coil springs, wherein the upper sheet and the lower sheet are a fabric woven from synthetic fiber yarns or a soft vinyl chloride sheet, and are welded to each other at points with a space between adjacent coil springs to compress the coil springs in the vertical direction, a support structure.

2. The support structure according to claim 1, further comprising an upper felt layer provided between the upper sheet and the upper end of the coil spring and / or a lower felt layer provided between the lower sheet and the lower end of the coil spring.

3. The support structure according to claim 1, wherein the upper sheet and / or the lower sheet is polyester or tarpolin.

4. A vacuum package of a support structure, comprising the support structure according to any one of claims 1 to 3, and a bag body that seals the support structure in a degassed state.

5. A cushion comprising the support structure according to any one of claims 1 to 3.

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