Resin-reinforced mesh structure

Abstract

To solve a problem of a high-pressure oxygen therapy, which requires a strong structure that can withstand high internal pressures of 1.3 to 2 atmospheres, for which steel structures are used to form the walls, and resulting very heavy.SOLUTION: The problem is solved by coating a mesh base material with a resin that provides strength and flexibility, to create a strong, sealed structure.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a resin-reinforced network structure.

Background Art

[0002] In hyperbaric oxygen therapy, by breathing high-concentration oxygen under a high pressure of about 1.3 to 2 atmospheres, the oxygen concentration in the blood is increased to 10 to 20 times the normal level. Utilizing this principle, a large amount of oxygen is sent to the affected area through the blood to promote the regeneration of damaged tissues and the early subsidence of inflammation.

[0003] However, when the internal pressure is 2 atmospheres, a force of about 0.2 MPs is applied, so the walls of the treatment room are generally made of steel. Therefore, they are very heavy.

[0004] Patent Document 1 is an example of a patent related to a hyperbaric oxygen capsule. A rigid material is used for the outer wall of the sealed cylindrical capsule.

[0005] Patent Document 2 is an example of a patent related to a similar oxygen room. Here too, the housing is limited to being made of metal.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007]

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0008] The problem to be solved is to obtain a lightweight and strong sealed structure that is not destroyed even when the internal air pressure is 2 atmospheres or more.

Means for Solving the Problems

[0009] The present invention obtains a strong sealing structure by coating a resin having strength and flexibility on a reticulated base material.

Advantages of the Invention

[0010] In the present invention, by coating a resin having strength and flexibility on a reticulated base material, during the process of increasing the internal pressure, the resin slightly elongates and does not break due to strong tensile strength, and since the base material is also reticulated, it follows the elongation of the resin to obtain a structure that is not broken. Also, during the process of the internal pressure returning to its original state, due to the flexibility of the resin, it returns to its original shape, and since the base material is also reticulated, it follows the shrinkage of the resin to obtain a structure that returns to its original shape. Therefore, even if the inside repeatedly becomes high pressure, it is not broken and has the effect of returning to its original shape.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0012] In order to obtain a strong sealing structure that is not destroyed even when the internal air pressure is 2 atmospheres or more, the reticulated base material is coated with, for example, a polyurethane resin as a resin having strength and flexibility. During the process of increasing the internal pressure, the polyurethane resin slightly stretches and does not break due to its strong tensile strength. Also, since the base material is reticulated, it follows the stretching of the polyurethane resin and is not destroyed. Further, during the process of the internal pressure returning to its original state, due to the flexibility of the polyurethane resin, it returns to its original shape. Also, since the base material is reticulated, it follows the contraction of the polyurethane resin and returns to its original shape. As a result, a structure that is not destroyed even when the inside is repeatedly under high pressure and returns to its original shape is obtained.

Example

[0013] Figure 1 is an application example of a resin-reinforced reticulated structure, 101 is a high-pressure chamber, 102 is a polyurethane resin, 103 is a reticulated structure is.

[0014] The wall of the high-pressure chamber 101 is composed of a reticulated structure 103 and a polyurethane resin 102 that coats the outside thereof. Figure 1 is a view with a part of the coating of the polyurethane resin 102 removed.

[0015] First, the outer shape of the high-pressure chamber 101 is formed by the reticulated structure 103, and then the polyurethane resin 102 is applied to the outside of the reticulated structure 103 with a thickness of several millimeters. If necessary, the strength can be increased by applying it to the inside of the reticulated structure 103 as well.

[0016] As will be described later, the belt-shaped base material constituting the reticulated structure is preferably smoother at the corners than a rectangular cross-section with sharp corners. For example, a wood such as bamboo may be used.

[0017] Also, the polyurethane resin 102 does not necessarily have to be a polyurethane resin, and any material with tensile strength and that can stretch and contract is acceptable.

[0018] Figure 2 is an explanatory diagram of the network structure in the steady state, 201 is a strip-shaped base material arranged in the first direction, 202 is a strip-shaped base material arranged in the second direction, 203 is the width T of the strip-shaped base material, 204 is the interval a between the strip-shaped base materials, 205 is the angle θ formed between the first direction and the second direction, 206 is the period La of the strip-shaped base material in the horizontal direction, 207 is the period Lb of the strip-shaped base material in the vertical direction That's it.

[0019] The strip-shaped base material 201 and the strip-shaped base material 202 intersect at an angle θ (205), and are woven in an alternating pattern up and down. Each of the strip-shaped base materials 201 and 202 has a base material width of T (203) and an interval of a (204). Also, the period of each base material in the horizontal direction is La (206), and the period of each base material in the horizontal direction is Lb (207). Here, the period is the sum of one strip-shaped base material and its interval, and changes according to the angle θ (205) formed between the first direction and the second direction. Therefore, the period La (206) and the period Lb (207) become Equation 1 and Equation 2 respectively.

[0020]

Equation

Equation

[0021] Figure 3 is an explanatory diagram of the network structure during expansion, 301 is a strip-shaped base material arranged in the first direction, 302 is a strip-shaped base material arranged in the second direction, 303 is the width T of the strip-shaped base material, 304 is the interval a' between the strip-shaped base materials, 305 is the angle θ' formed between the first direction and the second direction, 306 is the period La' of the strip-shaped base material in the horizontal direction, 307 is the period Lb' of the strip-shaped base material in the vertical direction That's it.

[0022] At this time, a force is applied in the direction of the arrow in the figure and it is being pulled horizontally. At this time, the network structure deforms, the angle θ' formed by the strip-shaped base materials 301 and 302 increases, and the distance a(204) between the strip-shaped base materials becomes the width a'(304). On the other hand, the width T(303) of the strip-shaped base material does not change. Also, the period La'(306) of the strip-shaped base material in the horizontal direction and the period Lb'(307) of the strip-shaped base material in the vertical direction become the number 3 and the number 4.

[0023]

Number

Number

[0024] Here, assuming that the period Lb'(307) of the strip-shaped base material in the vertical direction is fixed and does not change, it becomes like the number 5.

Number

[0025] From the number 4 and the number 5, the distance a'(304) between the strip-shaped base materials during expansion becomes the number 6. For example, if the width T(303) of the strip-shaped base material is 5 mm, the distance a(204) between the strip-shaped base materials when no force is applied is 2 mm, the angle θ(205) formed by the first direction and the second direction when no force is applied is 90 degrees, and the angle θ'(305) formed by the first direction and the second direction during expansion is 100 degrees, then the distance a'(304) between the strip-shaped base materials during expansion is 2.7 mm.

Number

[0026] Also, at this time, the period of the strip-shaped base material in the horizontal direction changes from La(206) = 9.9 mm to La'(306) = 11.8 mm.

[0027] That is, when the network structure is pulled to expand, the distance between the strip-shaped base materials increases, and it will only stretch in the direction in which the force is acting.

[0028] Figure 4 is an explanatory diagram of the network structure during compression. That is, 401 is a strip-shaped base material arranged in the first direction, 402 is a strip-shaped base material arranged in the second direction, 403 is the width T of the strip-shaped base material, 404 is the interval a’’ between the strip-shaped base materials, 405 is the angle θ’’ formed between the first direction and the second direction, 406 is the period La’’ of the strip-shaped base material in the horizontal direction, 407 is the period Lb’’ of the strip-shaped base material in the vertical direction That is.

[0029] At this time, a force is applied in the direction of the arrow in the figure and it is being pushed horizontally. At this time, the network structure deforms, the angle θ’’ formed by the strip-shaped base materials 401 and 402 becomes smaller, and the interval a (204) between the strip-shaped base materials becomes the width a’’ (404). On the other hand, the width T (403) of the strip-shaped base material does not change. Also, the period of the strip-shaped base material in the horizontal direction is La’’ (406), and the period of the strip-shaped base material in the vertical direction is Lb’’ (407), which become the number 7 and the number 8.

[0030]

Number

Number

[0031] Here, assuming that the period Lb’’ (407) of the strip-shaped base material in the vertical direction is fixed and does not change, it becomes like the number 9.

Number

[0032] The interval a’’ (404) of the strip-shaped base material during compression may be obtained by replacing the interval a’ (304) of the strip-shaped base material in No. 6 with the interval a’’ (404) of the strip-shaped base material. For example, if the width T (403) of the strip-shaped base material is 5 mm, the interval a (204) of the strip-shaped base material when no force is applied is 2 mm, the angle θ (205) formed by the first direction and the second direction when no force is applied is 90 degrees, and the angle θ’’ (405) formed by the first direction and the second direction during compression is 80 degrees, then the interval a’’ (404) of the strip-shaped base material during compression is 1.5 mm.

[0033] Also, at this time, the period of the strip-shaped base material in the horizontal direction changes from La (206) = 9.9 mm to La’’ (406) = 8.3 mm.

[0034] That is, when the reticulated structure is compressed to shrink, the interval of the strip-shaped base material becomes smaller, and it shrinks only in the direction in which the force is acting.

[0035] Figure 5 is a cross-sectional view of the strip-shaped base material during compression, 501, 502, and 503 are strip-shaped base materials with small round corners, 504 is another strip-shaped base material, 505, 506, 507, and 508 are the contact positions between the strip-shaped base materials, 509 is the interval a’’’ of the strip-shaped base material, 510, 511, and 512 are strip-shaped base materials with large round corners, 513 is another strip-shaped base material is.

[0036] In Figure 5(a), strip-shaped base materials 501, 502, and 503 with small round corners arranged in parallel and another strip-shaped base material 504 in an intersecting direction are arranged. The other strip-shaped base material 504 is alternately woven above strip-shaped base material 501 and strip-shaped base material 503 and below strip-shaped base material 502. Another strip-shaped base material in the same direction is also arranged before and after the strip-shaped base material 504, and they are alternately woven below strip-shaped base material 501 and strip-shaped base material 503 and above strip-shaped base material 502. In this way, the strip-shaped base materials in two different directions are alternately woven to form a reticulated structure.

[0037] The interval a''' between the strip-shaped substrates is determined by the thickness, width, hardness, etc. of the strip-shaped substrates, and the minimum interval a''' of the strip-shaped substrates that does not break determines the minimum value of the horizontal period La'' of the strip-shaped substrates during compression.

[0038] At this time, the strip-shaped substrates 501, 502, 503 with small corner radii and another strip-shaped substrate 504 are in contact at the contact positions 505, 506, 507, 508 between the strip-shaped substrates. However, since the corner radii of the strip-shaped substrates are small, a large force is applied to the strip-shaped substrate 504 at the contact positions. Therefore, the strength of the strip-shaped substrate 504 decreases by continuously or repeatedly receiving this mechanical stress.

[0039] In Fig. 5(b), strip-shaped substrates 510, 511, 512 with large corner radii arranged in parallel and another strip-shaped substrate 513 are arranged in a direction intersecting them. The said another strip-shaped substrate 513 is alternately woven above the strip-shaped substrate 510 and the strip-shaped substrate 512 and below the strip-shaped substrate 511. Another strip-shaped substrate in the same direction is also arranged before and after the strip-shaped substrate 513, and they are alternately woven below the strip-shaped substrate 510 and the strip-shaped substrate 512 and above the strip-shaped substrate 511. In this way, a net-like structure is formed by alternately weaving strip-shaped substrates in two different directions.

[0040] At this time, since it contacts another strip-shaped substrate 513 along the large roundness of the strip-shaped substrates 510, 511, 512 with large corner radii, no large force is applied to the strip-shaped substrate 513. Therefore, the mechanical stress received continuously or repeatedly is small, and the strength of the strip-shaped substrate 513 does not decrease.

[0041] In this way, by increasing the corner radius of the strip-shaped substrate, the deterioration of strength can be suppressed.

[0042] Increasing the corner radius of the strip-shaped substrate leads to an increase in cost. However, by using a material such as bamboo that can easily have a corner radius as the strip-shaped substrate, a light and net-like structure with suppressed strength deterioration can be obtained.

[0043] Actually, the expandable and contractible range of the net-like structure is determined by the tensile stress and viscosity of the resin that reinforces the actually knitted strip-shaped base material.

[0044] FIG. 6 shows another application example of the resin-reinforced net-like structure, 601 is a metal frame, 602 is a resin-reinforced net-like structure, 603 is a metal plate is.

[0045] The resin-reinforced net-like structure 602 is joined to the surrounding metal frame 601. Also, a metal plate 603 is joined to the metal frame at the portion contacting the floor. The plurality of metal frames are joined at the frame portions, and the resin-reinforced net-like structure 602 is not provided on the joined surfaces. On the other hand, the resin-reinforced net-like structure 602 is provided on the surfaces necessary for finally forming a closed space.

[0046] Since the closed space is configured by being surrounded by the metal frame 601, the resin-reinforced net-like structure 602, and the metal plate 603 in this way, when the internal air pressure increases, the portion of the resin-reinforced net-like structure 602 bulges outward. At this time, as the resin extends and the strip-shaped base material shifts at the same time, the net-like structure also deforms and follows the extension of the resin, so the resin-reinforced net-like structure 602 does not break. When the internal air pressure returns to its original state, the strip-shaped base material returns to its original position and the resin also returns to its original shape.

[0047] If the maximum internal air pressure, the tensile strength of the resin, and the hardness of the strip-shaped base material are given, a desired structure can be obtained by optimizing the cross-sectional structure of the strip-shaped base material, the interval between the strip-shaped base materials, etc.

[0048] In this way, by making a part of the resin-reinforced net-like structure, the overall weight can be reduced.

Explanation of Signs

[0049] 101 High-pressure chamber, 102 Polyurethane resin, 103 Net-like structure 201 Strip-shaped base materials arranged in the first direction, 202 Strip-shaped base materials arranged in the second direction, 203 Width T of the strip-shaped base material, 204 Spacing a between the strip-shaped base materials, 205 Angle θ formed between the first direction and the second direction, 206 Period La of the strip-shaped base material in the horizontal direction, 207 Period Lb of the strip-shaped base material in the vertical direction 301 Strip-shaped base materials arranged in the first direction, 302 Strip-shaped base materials arranged in the second direction, 303 Width T of the strip-shaped base material, 304 Spacing a' between the strip-shaped base materials, 305 Angle θ' formed between the first direction and the second direction, 306 Period La' of the strip-shaped base material in the horizontal direction, 307 Period Lb' of the strip-shaped base material in the vertical direction 401 Strip-shaped base materials arranged in the first direction, 402 Strip-shaped base materials arranged in the second direction, 403 Width T of the strip-shaped base material, 404 Spacing a'' between the strip-shaped base materials, 405 Angle θ'' formed between the first direction and the second direction, 406 Period La'' of the strip-shaped base material in the horizontal direction, 407 Period Lb'' of the strip-shaped base material in the vertical direction 501, 502, 503 Strip-shaped base materials with small roundings at the corners, 504 Another strip-shaped base material, 505, 506, 507, 508 Contact positions between the strip-shaped base materials, 509 Spacing a''' between the strip-shaped base materials, 510, 511, 512 Strip-shaped base materials with large roundings at the corners, 513 Another strip-shaped base material 601 is a metal frame, 602 is a resin-reinforced mesh structure, 603 is a metal plate

Claims

**Claim 1** A resin-reinforced net-like structure, comprising a net-like structure knitted from a strip-shaped material and a resin material having strength and flexibility, wherein the surface of the previous net-like structure is coated with the previous resin material. **Claim 2** The resin-reinforced net-like structure according to Claim 1, characterized in that a net-like structure knitted from a strip-shaped material is assembled into the shape of a desired three-dimensional structure and then coated with a resin material having strength and flexibility. **Claim 3** The resin-reinforced net-like structures according to Claims 1 and 2, characterized in that polyurethane is used as the resin material. **Claim 4** The resin-reinforced net-like structures according to Claims 1, 2 and 3, characterized in that bamboo is used as the strip-shaped material.

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