JP6319986B2 - Foldable water tank - Google Patents

Description

  The present invention relates to a folding water tank that stores a liquid such as water (hereinafter also simply referred to as water) in the tank.

  When a conventional folding water tank made of waterproof sheets, in particular, a rectangular folding water tank, is filled with water or the like, the periphery (wall part) of the water tank spreads in a substantially circular shape due to water pressure (projects radially). ), The water in the tank overflows, or the wall of the water tank falls outside and cannot stand up (independent).

  Also, from the viewpoint of space utilization rate, compared to a circular folding tank where a dead space is likely to occur around the aquarium, there is a rectangular folding tank where a plurality of tanks are less likely to cause a gap between the tanks. It has been demanded. Therefore, in order to solve such problems, various folding water tanks have been proposed.

  For example, in the foldable simple liquid tank of Patent Document 1, a large amount of plastic reinforcing material having high tensile strength is stretched between the facing side walls at a predetermined interval in a direction to support the hydraulic pressure applied to the side walls. The water can be secured inside the tank.

Japanese Patent Laid-Open No. 11-314697

  However, the folding simple liquid tank shown in Patent Document 1 is provided with an outer frame reinforcing pipe accommodating portion formed in a bag shape on a cloth material constituting the water tank, and inserting a thin hard pipe into the accommodating portion. The outer frame is reinforced. That is, in the foldable simple liquid tank shown in Patent Document 1, it is necessary to provide an outer frame reinforcing pipe (regulating means) in order to regulate deformation of the surroundings (wall part) of the water tank due to water pressure. Therefore, the foldable simple liquid tank shown in Patent Document 1 has a problem that it takes excessive time and labor to assemble and remove the water tank.

  The present invention solves the above-mentioned problems, and stably maintains the shape of the water tank without providing a regulating means such as a support made of iron pipes, beam members, frame bones, etc. on the outer frame (outer peripheral wall) of the water tank. An object of the present invention is to provide a rectangular folding water tank that can be easily assembled and removed.

To solve the above problem, foldable water tank according to a first aspect of the invention, e Bei an elastically deformable outer peripheral wall and a bottom, said bottom is constituted by the bottom sheet formed in a square shape or a rectangular shape A foldable water tank main body, and a support member that is provided inside the water tank main body and connects the outer peripheral wall and the bottom, wherein the outer peripheral wall is composed of a plurality of wall plates, A plurality of wall plates are provided adjacent to each other in the circumferential direction in a state in which the wall plates can stand up, the number of the wall plates is an even number of 6 or more, and the support member has one end portion of the wall plates of the outer peripheral wall. It is attached to a connecting fold portion that is foldably connected, and the other end portion is attached to the bottom portion.

  According to the above configuration, without providing a restriction means on the outer frame (outer peripheral wall) of the water tank, the shape of the water tank (outer peripheral wall) is determined in a state where the outer peripheral wall stands up with respect to the bottom by only the support member. The shape can be maintained.

  In order to solve the above-mentioned problem, a foldable water tank according to the invention of claim 2 is the foldable water tank of claim 1, wherein the support member has a plurality of filaments arranged in at least one direction. The fiber structure is configured so that the arrangement direction of the filaments corresponds to the direction of tension acting on the support member.

  According to the said structure, a support member can fully resist the tension | tensile_strength which acts on a support member with a hydraulic pressure.

  In order to solve the above problems, a folding water tank according to the invention of claim 3 is the folding water tank according to claim 2, wherein the fiber structure is a woven fabric, a net, or a tarpaulin. .

  According to the said structure, when a support member will be in a tension | tensile_strength, elongation is small and can suppress the inclination of an outer peripheral wall notably.

  In order to solve the above problem, a foldable water tank according to the invention of claim 4 is the foldable water tank according to any one of claims 1 to 3, wherein the outer peripheral wall connecting side and the bottom of the support member are provided. The angle formed with the connection side is 60 degrees or more and less than 90 degrees.

  According to the above configuration, the outer peripheral wall is tilted inward in advance, and the outer peripheral wall is tilted outward by water pressure when storing water, so that the water tank is apparently upright.

  In order to solve the above-mentioned problem, a foldable water tank according to the invention of claim 5 is the foldable water tank according to any one of claims 1 to 4, wherein the support member is substantially triangular. It is a member.

  According to the said structure, an outer peripheral wall can be supported more reliably so that it can stand up with respect to a bottom part.

  In order to solve the above problem, a foldable water tank according to the invention of claim 6 is the foldable water tank according to any one of claims 1 to 4, wherein an upper partition is formed inside the water tank body. A member, and a lower partition member, wherein the upper partition member connects the outer peripheral walls facing each other, water is blocked at an upper portion thereof, and water can be passed at a lower portion thereof. Is composed of a supporting member whose end portions facing each other are attached to the connecting folded portion facing the outer peripheral wall, and whose other end portion is attached to the bottom portion, and water passage is blocked at the lower portion thereof. And water can be passed at a position lower than the upper partition member.

  According to the said structure, a thing with smaller specific gravity than water etc. is interrupted | blocked by an upper partition member, and a thing with larger specific gravity than water etc. is interrupted | blocked by a lower partition member.

  As effects of the present invention, the following effects can be obtained. That is, according to the foldable water tank, it is possible to easily assemble a square foldable water tank that does not create a dead space around the water tank, and the installed foldable water tank is a support made of an iron pipe or the like, The shape of the water tank can be stably maintained without providing a restricting means such as a beam member or a frame bone. Two or more folding water tanks can be installed side by side without providing a gap.

It is a perspective view of the water tank concerning the example of the present invention. It is a top view before water injection of the water tank concerning the example of the present invention. It is an enlarged plan view of the connection folding part vicinity in the outer peripheral wall of the water tank which concerns on the Example of this invention. It is AA sectional drawing of FIG. (A) is a side view which shows the texture of a support sheet, (b) is a perspective view of a support sheet. It is a top view after water pouring (at the time of full water) of the aquarium concerning the example of the present invention. It is a perspective view which shows the folding method of the water tank which concerns on the Example of this invention. (A) is a perspective view of the water tank concerning another example of the present invention, and (b) is a BB sectional view of (a).

  Below, the water tank 1 which concerns on this invention is demonstrated based on an Example.

  As shown in FIG. 1, the water tank 1 is integrally formed inside the water tank body 10 for storing water and the like, and supports the outer peripheral wall 11 of the water tank body 10 and the bottom sheet 12. And a sheet 30 (an example of a “supporting member”). In addition, you may provide the discharge hose 50 for discharging | emitting the water etc. which were stored in the water tank main body 10 as needed.

[Water tank body 10]
As shown in FIG.1 and FIG.2, the water tank main body 10 is formed in the cube shape or a rectangular parallelepiped shape (planar view square or rectangle), and is comprised so that water etc. can be stored in the inside. The water tank main body 10 includes an outer peripheral wall 11 that forms the outer peripheral portion thereof, and a bottom sheet 12 (an example of a “bottom”) that covers the lower end portion of the outer peripheral wall 11 in a watertight state.

[Outer peripheral wall 11]
The outer peripheral wall 11 has a waterproof property and is made of an elastically deformable member. Here, being elastically deformable means that it is deformed by an external force and returns to its original shape when the external force is removed. Preferably, it has flexibility. As shown in FIG. 2, the outer peripheral wall 11 has a square or rectangular shape in plan view. Here, the shape in plan view refers to the shape of the outer peripheral wall 11 when the bottom sheet 12 is viewed from above the water tank 1. By making the shape in plan view a square or a rectangle, the gap between the water tanks can be reduced when a plurality of water tanks are arranged, and a large number of water tanks can be arranged in a fixed space.

  As shown in FIGS. 2 and 3, the outer peripheral wall 11 includes a plurality of wall plates 13 and a wall plate accommodation sheet 14 that accommodates the wall plates 13. The outer peripheral wall 11 may have an envelope (bag) type double waterproof sheet structure in which the cross-sectional structure of the outer peripheral wall 11 has a wall plate 13 inserted therein. The outer peripheral wall 11 is arranged adjacent to the circumferential direction of the bottom sheet 12 in a state where the wall plate 13 accommodated in the wall sheet accommodating sheet 14 can stand up (self-standing) with respect to the bottom sheet 12. Is formed. Furthermore, the outer peripheral wall 11 is configured such that the number of folding units, that is, the number of wall plates 13 (the accommodating portions 15 of the wall plate accommodating sheet 14) is an even number equal to or greater than 6, and It is preferable that the number of side and long side folding units is 3 × 3 (in the case of FIG. 2), 2 × 4, 3 × 4, 4 × 4, and the like. By setting the number of folding units of the outer peripheral wall 11 to be an even number, the wall plates 13 can be overlapped and folded, and the water tank 1 can be folded and stored more compactly.

[Wallboard 13]
The wall plate 13 is an elastically deformable plate-like member, and is formed of a foamed resin plate (for example, a foamed polyethylene plate) from the viewpoint of lightness. The wall plate 13 may be, for example, a wooden plate, a metal plate, a resin plate, an air mat, or the like as long as it is a plate-like member that can be elastically deformed. The wall plate 13 is preferably a member that easily floats due to buoyancy such as water.

[Wallboard accommodation sheet 14]
The wallboard accommodating sheet 14 is a waterproof envelope-like (bag-like) sheet, and a surface of a woven or knitted fabric made of polyester yarn is coated with a synthetic resin film made of vinyl chloride or an ethylene-vinyl acetate polymer. It may consist of a tarpaulin. By making the wallboard accommodating sheet 14 an envelope-like (bag-like) sheet and accommodating the wallboard 13 therein, the wallboard 13 is hardly damaged when subjected to an impact from the outside or the inside of the water tank 1 or Hard to break. Further, even when the wall board 13 with poor waterproofness is used, the wall board accommodating sheet 14 can provide waterproofing. In addition, since the wallboard accommodating sheet 14 is made of tarpaulin, it does not easily deteriorate or become scratched even when used outdoors for a long time.

  The wallboard containing sheet 14 may be made of tarpaulin obtained by coating the surface of a woven or knitted fabric made of nylon yarn, olefin yarn or the like with a synthetic resin film made of urethane, polyester elastomer or the like. Moreover, when storing drinking water etc. in the water tank 1, it is desirable to comprise the wallboard accommodation sheet | seat 14 with the tarpaulin formed by coating the ethylene-vinyl acetate polymer which does not contain a plasticizer.

  As shown in FIG. 3, the wallboard storage sheet 14 includes an envelope-shaped (bag-shaped) storage section 15 that stores the wallboard 13, and a connection folding section 16 that connects between the adjacent storage sections 15. It is configured. The wallboard accommodation sheet 14 is formed in a strip shape by connecting a plurality of accommodation portions 15 by connecting bent portions 16.

  As shown in FIG. 4, the accommodating portion 15 includes an inner sheet 17 that forms the inner surface of the outer peripheral wall 11, an outer sheet 18 that forms the outer surface of the outer peripheral wall 11, and an upper sheet 19 that forms the upper surface of the outer peripheral wall 11. And a lower surface sheet 20 that forms the lower surface of the outer peripheral wall 11. The accommodating portion 15 may be formed by directly welding the upper portion (lower portion) of the inner surface sheet 17 and the upper portion (lower portion) of the outer surface sheet 18. Moreover, it is preferable that the accommodating part 15 is provided with the opening part 21 in which the wall board 13 can be taken in or out. By providing the opening portion 21 in the housing portion 15, the wall plate 13 can be exchanged from the opening portion 21 when the wall plate 13 is damaged or deformed.

  The opening 21 is an opening provided in at least one part of the accommodating portion 15 as necessary. By providing the surface fasteners 22 and 23 in the opening, the opening 21 can be freely opened and closed. Can be taken in and out. Specifically, one surface fastener 22 of the male surface fastener and the female surface fastener is provided at the lower end of the lower surface sheet 20, and the other surface fastener 23 is provided at the lower end of the outer surface sheet 18. And after accommodating the wall board 13 in the accommodating part 15 from the opening part 21, the wall board 13 is accommodated in the accommodating part 15 by closing the opening part 21 by hook-and-loop fastener 22 * 23. In addition, you may provide the opening part 21 in any of the inner surface sheet 17, the outer surface sheet 18, the upper surface sheet 19, or the lower surface sheet 20. Especially, it is preferable to provide the opening part 21 in the lower surface sheet 20 so that it may not be opened unintentionally when the water tank 1 is used.

[Connection Folding Portion 16]
As shown in FIG. 3, the connection bent portion 16 is a portion that connects the wall plates 13 adjacent to each other in the circumferential direction of the outer peripheral wall 11, that is, the accommodating portions 15. In the connection bent portion 16, the inner sheet 17 and the outer sheet 18 are welded in the thickness direction by high-frequency welding, ultrasonic welding, hot air welding, thermal iron welding, hot plate welding, etc. May be formed. Further, the connection folding portion 16 can be attached to one end portion (short side 32, first tongue piece 36) of the support sheet 30 described later, and can fold the wall plate 13 in the circumferential direction. It is formed with a width of about. Specifically, the width of the connection bent portion 16 is preferably 80 mm to 400 mm, more preferably 120 mm to 240 mm, and particularly preferably 150 mm to 200 mm.

  By configuring the connection bent portion 16 in this way, the wall plate 13 is prevented from moving in the circumferential direction of the outer peripheral wall 11. In addition, when water or the like is filled in the water tank 1, the stress generated because the outer peripheral wall 11 tends to be deformed is reduced, and the wall plate 13 is prevented from being bent excessively in the circumferential direction. In addition, the wall plate 13 can be folded at the position of the connection folding portion 16 while being accommodated. Furthermore, when pulling the connection folding part 16 inward of the water tank 1 (water tank main body 10), the inner surface sheet 17 and the outer surface sheet 18 in the connection folding part 16 can be simultaneously pulled toward the inner side of the water tank 1. That is, when the connection folded portion 16 is supported by the support sheet 30 to be described later, not only the inner sheet 17 in the connection folded portion 16 can be supported (pulled) but also the outer sheet 18 can be supported (pulled) simultaneously.

[Bottom sheet 12]
The bottom sheet 12 may be composed of a single sheet formed of tarpaulin made of the same material as the wallboard accommodating sheet 14. As shown in FIGS. 1 and 2, the bottom sheet 12 is formed in a square shape or a rectangular shape according to the circumferential length of the outer peripheral wall 11, and is joined to the lower surface sheet 20 of the wallboard accommodating sheet 14. Thus, it may be provided integrally with the wallboard accommodating sheet 14.

[Drain hose 50]
As shown in FIG. 1, the drainage hose 50 may be connected to the lower outer surface of the outer peripheral wall 11 by high-frequency welding to the lower outer surface of the connection bent portion 16 of the outer peripheral wall 11 as necessary. Further, the drainage hose 50 may be folded at the base end portion thereof, that is, the welded portion to the connection folding portion 16 and the vicinity thereof, and fixed to the outer surface of the outer peripheral wall 11 using the hook-and-loop fastener 51.

[Support sheet 30]
Next, the support sheet 30 (an example of a support member) will be described. The support sheet 30 is a member that connects the outer peripheral wall 11 and the bottom sheet 12, one end of which is attached to the connection folding part 16, and the other end is attached to the bottom sheet 12. In the embodiment, as shown in FIGS. 4 and 5, the support sheet 30 includes two oblique sides of a long side 31 and a short side 32 (an example of “one end portion” of the support member), and a long side 31 at one end thereof. Is a sheet piece formed in a substantially triangular shape including a bottom side 33 (an example of the “other end portion” of the support member) in contact with the base plate and a notch 38 formed between the short side 32 and the bottom side 33. .

  The support sheet 30 can use a fiber structure. The fiber structure is not particularly limited, and may be a yarn, a rope, a woven fabric, a knitted fabric, a nonwoven fabric, a net, or a tarpaulin using these. Here, the tarpaulin is obtained by coating (coating) a synthetic resin on a yarn, rope, woven fabric, knitted fabric, non-woven fabric, or net, and is preferably a synthetic resin impregnated, coated, or bonded. . In the embodiment, the support sheet 30 is formed by coating the surface of a woven or knitted fabric made of polyester yarn with a synthetic resin film made of vinyl chloride or an ethylene-vinyl acetate polymer, like the wallboard accommodating sheet 14 and the bottom sheet 12. It consists of a tarpaulin.

  The support sheet 30 is a fiber structure in which a plurality of filaments are arranged in at least one direction, and the fiber structure is configured so that the arrangement direction of the filaments corresponds to the direction of tension acting on the support member. It is preferable. When the arrangement direction of the filamentous material is arranged in the direction of the tension acting on the support sheet 30, when the support sheet 30 is in a tension state, the elongation becomes small and the tilt of the outer peripheral wall 11 can be suppressed. Specifically, the arrangement direction of the filamentous material may be configured to be 30 degrees to 60 degrees with respect to the bottom sheet 12. In this case, the fiber structure is more preferably a woven fabric, a net, or a tarpaulin. For example, it is possible to use a tarpaulin obtained by coating a filamentous material or woven fabric arranged in one direction with a synthetic resin, or a molding net obtained by extrusion molding or the like. In the embodiment, as shown in FIG. 5 (a), the woven or knitted polyester yarn used for the tarpaulin of the support sheet 30 is formed by plain weaving in which warp yarns 34 and weft yarns 35 made of polyester yarns are alternately raised and lowered. The length direction (texture) of one of the warp yarn 34 and the weft yarn 35 is configured to correspond to the direction of the tension acting on the support sheet 30. Specifically, one of the warp 34 and the weft 35 is configured to be 45 degrees with respect to the bottom 33 of the support sheet 30. By using the fabric of the fabric used for the tarpaulin of the support sheet 30 as a bias, the support sheet 30 acts in the direction of the tension acting on the support sheet 30 (the direction of the short side 32, the right direction in FIG. 5A). Thus, it is difficult to stretch and deform.

  Further, as shown in FIG. 2, one support sheet 30 is arranged in the connection folding portion 16 of the wall plate accommodation sheet 14 for each folding unit of the four sides of the water tank 1. That is, a plurality of support sheets 30 are provided inside the water tank 1, and each support sheet 30 is disposed in the connection folding portion 16 between the storage portions 15 of the wallboard storage sheet 14. For example, when the number of folding units of each short side and long side of the water tank 1 is 3 × 3 (in the case of FIG. 2), eight support sheets 30 are arranged. By disposing the support sheet 30 in each connection bent portion 16, even when the water tank main body 10 becomes large, the outer peripheral wall 11 can be prevented from falling to the outside. This is because the force required for each support sheet 30 to support the wall plate 13 is caused by the interval between the support sheets 30 regardless of the size of the water tank 1.

  Then, as shown in FIGS. 2, 4, and 5 (a), the support sheet 30 has a short side 32 attached to the inner surface sheet 17 (inner part) in the connection folded portion 16 of the wallboard accommodating sheet 14. The bottom 33 is attached to the inner part of the bottom sheet 12. In addition, when the support sheet 30 is provided only between the connection folding parts 16 (outer peripheral wall 11) which the water tank main body 10 faces, in the state without external force, due to tension of the support sheet 30, the mutual wall plates 13 However, when an external force is applied to one wall plate 13 from the outside of the water tank 1 toward the inside, the tension of the support sheet 30 is loosened and the facing wall plate 13 (outer periphery) In some cases, a part of the wall 11 is pushed outward and tilted. On the other hand, since the water tank 1 of the present invention has a configuration in which the support sheet 30 connects the connection folded portion 16 (a part of the outer peripheral wall 11) and the bottom sheet 12, one wall plate 13 of the outer peripheral wall 11 is used. Even when an external force is applied from the outside to the inside of the water tank 1, the other wall plate 13 does not tilt.

  As long as the connection folding part 16 and the bottom sheet 12 are connected, the support sheet 30 may be connected to other places. For example, the support sheet 30 may have its facing end attached to the connecting folded part 16 facing the outer peripheral wall 11 and the other end attached to the bottom sheet 12. At first, from the viewpoint of providing a wide area without partitioning inside the water tank 1, one end of the support sheet 30 is attached to the connection folded portion 16 that connects the wall plates 13 of the outer peripheral wall 11 so as to be foldable, and the other end. Is preferably attached to the bottom sheet 12 and the remaining ends are not attached to either.

  By attaching the support sheet 30 to the inner surface sheet 17 (inner part) in the connection folded part 16, when the support sheet 30 supports (pulls) the connection folded part 16, the inner sheet 17 and the outer sheet 18 in the connection folded part 16. Are pulled toward the inside of the water tank 1 at the same time. Then, both end portions of the wall plate 13 adjacent to the connection folding portion 16 (between the two connection folding portions 16) are also pulled toward the inside of the water tank 1 together with the connection folding portion 16. For this reason, the water pressure applied in the horizontal direction due to the injected water or the like can be borne by the entire wall plate 13.

  In addition, when the support sheet 30 is attached to the inner surface sheet 17 (inner part) in the accommodating portion 15 of the wallboard accommodating sheet 14, the accommodating portion 15 has an envelope shape (bag shape). When the portion 15 is supported (pulled), only the inner sheet 17 inside the outer peripheral wall 11 is pulled toward the inside of the water tank 1, which is not preferable.

  The length and size of the support sheet 30 are selected so that the support sheet 30 is in a tension state when water or the like is stored in the water tank body 10. For example, the support sheet 30 can set the angle formed by the outer peripheral wall connecting side (short side 32) and the bottom connecting side (bottom side 33) to 60 degrees to 120 degrees. In particular, when obtaining the water tank 1 in which the outer peripheral wall 11 stands vertically with respect to the bottom sheet 12, the angle formed between the outer peripheral wall connecting side (short side 32) and the bottom connecting side (bottom side 33) of the support sheet 30 is set. It is preferable to set it to 60 degrees or more and less than 90 degrees. More preferably, it is 70 degrees-88 degrees, More preferably, it is 75 degrees-85 degrees. When the angle formed between the outer peripheral wall connecting side (short side 32) and the bottom connecting side (bottom side 33) of the support sheet 30 is less than 90 degrees, the outer peripheral wall 11 is inclined in advance to the inside of the water tank 1, The outer peripheral wall 11 is tilted outward by water pressure, and the water tank 1 is apparently formed with the outer peripheral wall 11 standing vertically. In the embodiment, as shown in FIG. 5A, the support sheet 30 has a short side 32 inclined at 8 degrees with respect to the base 33 (an angle between the short side 32 and the base 33 is 82 degrees). ing. Since the short side 32 of the support sheet 30 is inclined at a predetermined angle with respect to the bottom 33, when the support sheet 30 is attached to the connection fold 16 of the wallboard accommodating sheet 14, the connection fold 16 is a water tank. It becomes a state pulled toward the inside of 1. That is, when the water tank 1 is installed, the wall plate 13 of the outer peripheral wall 11 is in a state of being tilted inward of the water tank 1 in advance. For this reason, when water etc. are poured into the aquarium 1 (aquarium body 10), the wall plate 13 of the outer peripheral wall 11 is not tilted more than necessary to the outside of the aquarium 1 due to water pressure.

  Furthermore, as shown in FIG. 5, a notch portion 38 may be formed between the short side 32 and the bottom side 33 as necessary. In the vicinity of the lower portion of the connection folding portion 16 of the wallboard accommodating sheet 14 to which the support sheet 30 is attached is a portion where welding of each sheet constituting the water tank body 10 is concentrated, and when the support sheet 30 is further welded to such a portion. , Welding may be insufficient. Therefore, by forming the notch portion 38 in the support sheet 30, welding of the support sheet 30 to a portion where welding is concentrated is avoided, and the reliability of welding is improved. Further, the vicinity of the lower portion of the connection bent portion 16 is a portion where water or the like is easily collected and the drainage is poor. Therefore, the drainage is improved by forming the notch 38 in the support sheet 30.

  Furthermore, as shown in FIG. 3 and FIG. 5 (b), the support sheet 30 has first L-shaped first tongue pieces 36, 36 at the end of the short side 32 in the vicinity of the end edge of the short side 32. It is welded so as to sandwich the edge. Then, the welded first tongue pieces 36 and 36 are opened 180 degrees, and are welded and joined to the connection folded portion 16 of the wallboard accommodating sheet 14 to be connected to the connection folded portion 16 of the wallboard accommodating sheet 14. . As a result, the support sheet 30 is formed integrally with the wallboard accommodation sheet 14 at the short side 32.

  Similarly, the support sheet 30 is welded in the vicinity of the edge of the bottom 33 so that the substantially L-shaped second tongue pieces 37 and 37 sandwich the edge of the bottom 33. Then, the welded second tongue pieces 37 and 37 are opened 180 degrees and welded to and joined to the bottom sheet 12 to be connected to the bottom sheet 12. As a result, the support sheet 30 is formed integrally with the bottom sheet 12 at the bottom 33.

  In this way, the first tongue piece 36 and the second tongue piece 37 are opened 180 degrees and welded to the connecting folded portion 16 or the bottom sheet 12 of the wallboard accommodating sheet 14, so that the outer peripheral wall 11 or the bottom sheet 12 is attached. It can suppress that water pressure acts as peeling force of the 1st tongue piece 36 and the 2nd tongue piece 37. FIG.

  Further, as shown in FIG. 5B, the first tongue piece 36 and the second tongue piece 37 do not interfere with the first tongue piece 36 and the second tongue piece 37 and the like that are welded and joined at both ends. As shown in FIG.

[Use condition of tank 1]
Next, the usage state of the water tank 1 will be described. As shown in FIG. 2, the outer peripheral wall 11 (particularly, the central portion of each side of the outer peripheral wall 11) tends to tilt inward of the water tank 1 before water is poured into the water tank 1. This inclination of the outer peripheral wall 11 is particularly remarkable when the length of each side of the outer peripheral wall 11 is long and the number of folding units constituting each side is large. The corner portion of the water tank 1 is not tilted inward of the water tank 1 because the wall plates 13 of the outer peripheral wall 11 sandwiching the corner interfere with each other, and is restrained by the wall plate housing sheet 14 and the bottom sheet 12. Therefore, it does not tilt to the outside of the water tank 1.

  Then, as shown in FIG. 6, when water or the like is poured into the aquarium 1 (aquarium body 10), the outer peripheral wall 11 that is about to tilt inward of the aquarium 1 has a water pressure such as the injected water and the outer peripheral wall 11. The wall plate 13, which is a foamed resin plate constituting the buoyancy of the bottom sheet 12, gradually rises (self-standing). And the water tank 1 is maintained in the stable square shape, without making the inside of the water tank 1 full, and a square shape is maintained until it is full.

  On the other hand, when water or the like is poured into the aquarium 1 (aquarium body 10), the outer peripheral wall 11 tends to tilt (deform) outward from the aquarium 1 due to the water pressure of the injected water or the like. The support sheet 30 attached to the outer peripheral wall 11 and the bottom sheet 12 pulls the outer peripheral wall 11 about to tilt (deform) outward of the water tank 1 toward the inner side of the water tank 1, thereby Tilt (deformation) is prevented.

  In particular, by attaching the support sheet 30 to the connection folding portion 16 of the outer peripheral wall 11, the inner sheet 17 and the outer sheet 18 of the wallboard accommodating sheet 14 can be pulled simultaneously toward the inside of the water tank 1, The support sheet 30 can reliably prevent the outer peripheral wall 11 from being tilted (deformed).

[Folding method of aquarium 1]
Next, a method for folding the water tank 1 will be described. The following folding method is a method when the number of folding units of each short side and long side of the water tank 1 is 3 × 3.

  As shown in FIG. 7A, first, the water tank 1 is expanded so that the outer peripheral wall 11 stands on the bottom sheet 12. In the state where the water tank 1 is expanded, the central wall plate 13 on one side of the outer peripheral wall 11 is tilted inward of the water tank 1. Hold the upper part of the center wall plate 13 and the bottom sheet 12 at the same time and pull them upward. Then, as shown in FIGS. 7B and 7C, the wall plates 13 at both ends adjacent to the raised central wall plate 13 are aligned so that they can be folded, and the aligned wall plates 13 at the both ends are respectively centered. The wall plate 13 is folded.

  Similarly, as shown in FIGS. 7 (d) and 7 (e), the central wall plate 13 is placed inward of the water tank 1 with respect to one side of the outer peripheral wall 11 opposite to one side of the outer peripheral wall 11 that has been folded first. The wall plates 13 at both ends adjacent to the center wall plate 13 that has been brought down are folded with respect to the center wall plate 13. In this way, by folding the wall plate 13 of the outer peripheral wall 11, the water tank 1 can be compactly folded into a substantially cubic shape as shown in FIG. 7 (f). The support sheet 30 is folded inside at the same time as the wall plate 13 when the wall plate 13 is folded.

  As described above, in the water tank 1, the outer peripheral wall 11 can be folded at the position of the connection folding portion 16 with the wall plate 13 being accommodated in the accommodation portion 15. Further, as the outer peripheral wall 11 is folded, the bottom sheet 12 and the support sheet 30 can be folded in the same manner.

  As described above, according to the water tank 1 according to the above-described embodiment, it is possible to easily assemble the cubic or rectangular water tank 1 that does not create a dead space around the water tank 1. And the installed water tank 1 can maintain the shape of a cube shape or a rectangular parallelepiped shape stably, without providing control means, such as a support | pillar consisting of an iron pipe etc., a beam member, and a frame frame. Also, two or more water tanks 1 can be installed side by side without providing a gap.

  Moreover, according to the water tank 1 according to the above embodiment, by arranging a plurality of substantially triangular support sheets 30 inside the water tank 1, the outer peripheral wall 11 is prevented from overturning, and the outer peripheral wall 11 is It is possible to stand up (self-standing) with respect to the bottom sheet 12 and to maintain a cubic or rectangular parallelepiped shape to resist deformation of the outer peripheral wall 11 due to water pressure during water injection. Moreover, the water tank 1 can be stored compactly at the time of folding.

  Furthermore, according to the water tank 1 according to the above embodiment, by forming the support sheet 30 integrally inside the water tank body 10, the support sheet 30 is folded together with the water tank body 10 when the water tank 1 is folded. The assembly installation work and the removal work can be remarkably shortened, and the assembly installation work and the removal work itself of the water tank 1 can be easily performed.

  Furthermore, according to the water tank 1 according to the above-described embodiment, only the support sheet 30 made of the same material as that of the water tank body 10 can be used without the provision of restricting means such as columns, beam members, and frame frames made of iron pipes. Since the shape is maintained, the water tank 1 itself can have a simple structure.

  Next, the water tank 60 which is the other form of the water tank 1 which concerns on this invention is demonstrated.

  As shown in FIG. 8, the water tank 60 includes an upper partition member 62, a lower partition member 63, and a center partition member 64 provided inside the water tank body 10. The water tank 60 separates water containing sand, gravel, earth and sand, sludge, oil or the like by the difference in specific gravity by configuring the upper partition member 62, the lower partition member 63, and the central partition member 64 as follows. It can be used as a separation tank.

  As shown in FIG. 8, the upper partition member 62 is connected to the facing outer peripheral wall 11, the water passage is blocked at the upper part thereof, and the water can be passed through the lower part thereof. The upper partition member 62 plays a role of blocking impurities having a specific gravity smaller than that of water in the upper part and allowing water and a substance having a higher specific gravity than water to pass in the lower part thereof. That is, the lower part of the upper partition member 62 only needs to be able to pass water. For example, the structure in which the upper partition member 62 is separated from the bottom sheet 12, or the lower part of the upper partition member 62 is made to be water-permeable such as a net. It can be comprised with the material which has. Especially, it is preferable that the upper partition member 62 is separated from the bottom sheet 12.

  As shown in FIG. 8, the lower partition member 63 is a support member, and the facing end portions thereof are respectively attached to the connection folding portions 16 facing the outer peripheral wall 11. Further, the other end is attached to the bottom sheet 12, and the lower part thereof is water-blocked. The lower partition member 63 can pass water at a position where the height is lower than that of the upper partition member 62. The lower partition member 63 plays a role of passing water and a substance having a specific gravity smaller than that of water in the upper part thereof and blocking impurities having a specific gravity larger than that of water in the lower part thereof. That is, the lower partition member 63 only needs to be able to pass water at a position lower than the upper partition member 62. For example, the lower partition member 63 has a lower height than the upper partition member 62, or a lower portion. The upper part of the partition member 63 can be made of a material having water permeability such as a net. In particular, the lower partition member 63 preferably has a lower height than the upper partition member 62.

  Moreover, each of the upper partition member 62 and the lower partition member 63 may be provided in one or two or more, and when at least one partition member is two or more, it is preferable that each is provided alternately. . FIG. 8 shows a configuration in which one lower partition member 63 is provided between two upper partition members 62.

  As shown in FIG. 8, the central partition member 64 is a support member, one end of which is attached to the connection folding portion 16 of the outer peripheral wall 11 and the other end is attached to the upper partition member 62, A member having one end attached to the upper partition member 62 and the other end attached to the lower partition member 63. As with the lower partition member 63, the central partition member 64 has a lower end attached to the bottom sheet 12 and a lower portion thereof that is blocked from passing water. The central partition member 64 can pass water at a position lower than the upper partition member 62.

  In the first tank 70, the water tank 60 shown in FIG. 8 has a specific gravity smaller than that of water (oil in FIG. 8) is blocked by the upper partition member 62 at the upper portion thereof, and has a higher specific gravity than water and water ( In FIG. 8, mud and gravel move from the lower part to the second region.

  In the second region 71, water and a material having a lower specific gravity move from the upper part thereof to the third region, and water and a material having a higher specific gravity than the water are blocked by the lower partition member 63 at the lower part. .

  In the third region 72, a material having a specific gravity smaller than that of water is blocked by the upper partition member 62 at the upper portion thereof, and water and a material having a specific gravity larger than that of water move from the lower portion thereof to the fourth region 73. As a result, in the fourth region 73, it is possible to obtain water in a state where a material having a specific gravity smaller than water and a material having a specific gravity larger than water are separated.

  That is, if a separation water tank such as the water tank 60 is used, water can be roughly separated from water containing sand, gravel, earth and sand, sludge, oil, or the like. For example, when sludge water generated at a construction site or the like is disposed of, if the water tank 60 of the present invention is used to separate water and sludge and only the separated water is discarded, the surrounding environment may be contaminated. Absent.

  In addition, you may select the bottom part sheet | seat 12, the wall board accommodation sheet | seat 14, and the support sheet 30 (the upper partition member 62 and the lower partition member 63) which comprise the water tank 1 (water tank 60) according to the liquid put in. For example, when water is put into the water tank 1 (water tank 60), any sheet is preferably a water-resistant sheet that does not decompose or deform when contacted with water.

  In the aquarium 1, the support sheet 30 is composed of a plain weave sheet composed of warps 34 and wefts 35. However, as described above, the support sheet 30 is not limited to this. In order to improve, the support sheet 30 may be constituted by a mesh-like sheet composed of warps 34 and wefts 35.

  Furthermore, in the water tank 1, although the support sheet 30 is comprised by the sheet-like member, as above-mentioned, if it is a structure which can support the outer peripheral wall 11, it is not limited to this, For example, a rope It does not matter even if it is configured to support the above.

  Furthermore, it is good also as a structure which attaches the lid | cover (cover) made from a sheet | seat to the upper part of the water tank 1 (water tank 60), and covers the upper part (opening part) of the water tank 1 (water tank 60). Moreover, it does not matter as a structure which opens and closes the said lid | cover made from a sheet | seat (cover) in the water tank 1 (water tank 60) using an airtight slide fastener.

1, 60 water tank 10 water tank body 11 outer peripheral wall 12 bottom sheet (bottom)
13 Wall plate 16 Connection fold 30 Support sheet (support member)
32 Short side (outer wall connection side)
33 Bottom side (bottom connection side)
62 Upper partition member 63 Lower partition member

Claims (6)

E Bei an elastically deformable outer peripheral wall and a bottom, said bottom is constituted by the bottom sheet formed in a square shape or rectangular shape, and the water tank body foldable
A support member that is provided inside the water tank body and connects the outer peripheral wall and the bottom;
With
The outer peripheral wall is composed of a plurality of wall plates, and is provided adjacent to the circumferential direction in a state where the plurality of wall plates can stand up,
The number of the wall plates is an even number of 6 or more,
One end portion of the support member is attached to a connection fold portion that connects the wall plates of the outer peripheral wall so as to be bendable, and the other end portion is attached to the bottom portion. The support member is a fiber structure in which a plurality of filaments are arranged in at least one direction,
The foldable water tank according to claim 1, wherein the fiber structure is configured so that an arrangement direction of the filaments corresponds to a direction of tension acting on the support member. The folding water tank according to claim 2, wherein the fiber structure is a woven fabric, a net, or a tarpaulin. The folding water tank according to any one of claims 1 to 3, wherein an angle formed between the outer peripheral wall connecting side and the bottom connecting side of the support member is 60 degrees or more and less than 90 degrees. The folding water tank according to any one of claims 1 to 4, wherein the support member is a substantially triangular member. Inside the water tank body, an upper partition member and a lower partition member are provided,
The upper partition member connects the outer peripheral walls facing each other, is blocked from passing water at the upper part, and can pass water at the lower part.
The lower partition member is composed of a support member whose opposite ends are each attached to the connecting folded portion facing the outer peripheral wall and whose other end is attached to the bottom portion, and the water passage is cut off at the lower portion. The foldable water tank according to any one of claims 1 to 4, wherein the water tank can pass water at a position lower than the upper partition member.

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