Simple water storage pool

Abstract

This invention provides a simple water storage pool that eliminates problems such as holes being formed when protrusions on the installation surface come into contact with the bottom surface, and also improves upon the issues of securing storage space and transporting the pool to the place of use. For example, it can be used for cooling to prevent secondary ignition in electric vehicles. [Solution] The simple water storage pool (100) comprises an annular main tube (10) equipped with water inlet and outlet (water inlet (12), outlet (14)), a water-stopping section (20) provided on the lower side of the main tube (10), a circumferentially continuous side wall sheet (30) provided along the main tube (10), and a float (40) provided on the upper end (34) of the side wall sheet (30), and is bottomless. It is equipped with.

Description

Technical Field

[0001] The present invention relates to a bottomless simple water storage pool.

Background Art

[0002] There are cases where it is desired to simply store water for various purposes, and there is a demand for a water storage pool that can be easily installed and store water. For example, when water storage is required during an earthquake, or when it is desired to store water as a play pool during leisure, etc. are examples.

[0003] Also, recently, the demand for cooling pools for preventing secondary ignition of electric vehicles has been increasing. Electric vehicles are equipped with rechargeable batteries such as lithium-ion batteries, and when a short circuit occurs in the circuit due to overcharging or the like, the internal temperature may rise and catch fire. Due to its structure, it is known that there is a risk of secondary ignition occurring in the electric vehicle after the fire has been extinguished. Thus, in order to prevent secondary ignition of electric vehicles, it is necessary to sufficiently water-cool the electric vehicle extinguished by the fire-fighting activity, and there is a demand for the provision of a cooling pool that enables such water-cooling to be easily carried out.

[0004] For example, in Patent Document 1, a flexible tank for liquid storage having a flexible bag-shaped body provided with an opening serving as a water supply and discharge port is proposed. A buoyancy material having a specific gravity smaller than that of the liquid is provided around the opening, and it is explained that no manual labor is required even when injecting liquid through a hose or the like from the opening. Also, in Patent Document 2, an invention of a water stop tool (gap reduction tool) for eliminating gaps generated when installing a water stop mechanism is disclosed. Such a water stop tool has a substantially L-shaped structure including a bottom surface installed on the ground surface or the like and a back surface that stands up independently from the end of the bottom surface portion. By closely arranging a plurality of water stop tools and eliminating the gaps between adjacent back surfaces, water stop can be achieved, and a water storage space can be secured by surrounding a predetermined area with a plurality of water stop tools.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-11579 [Patent Document 2] Japanese Patent Publication No. 2023-1017 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, the bag-shaped flexible tank described in Patent Document 1 has a bottom made of a flexible material. Therefore, if the flexible tank is installed on ground where there are protrusions such as stones, there is a risk that a hole may form in the bottom due to contact between the bottom and the protrusions, which is loaded with the weight of the water stored inside the tank or the items stored inside the tank. It is possible to remove the protrusions on the installation surface before installing the flexible tank, but in this case, the removal work takes time and the flexible tank cannot be used immediately. Furthermore, when using the above-mentioned flexible tank to water-cool an electric vehicle to prevent secondary ignition, the electric vehicle, which is at risk of secondary ignition, had to be moved onto the bottom surface of the flexible tank, making its practical use difficult. The problems with the bottom section described above, namely the problem of holes in the bottom section and the problem of moving an electric vehicle on the bottom section, may be referred to as "the bottom section problem" below.

[0007] On the other hand, the water storage space formed by the water-stopping device described in Patent Document 2 does not have a bottom surface like the flexible tank described above, so there is no concern about holes forming in the bottom surface. Furthermore, by arranging multiple water-stopping devices to surround the electric vehicle that requires cooling and supplying water to the secured water storage space, it is possible to cool the electric vehicle. However, a large number of water-sealing devices are needed to surround an electric vehicle, and the larger the vehicle, the more devices are required. Therefore, in order to quickly water-cool an electric vehicle, it is necessary to keep a large number of water-sealing devices on hand at all times, and to quickly transport a large number of these devices from the storage location to the fire scene, which presented a problem. These problems of securing storage space and transporting to the place of use were not only problems for water-cooling electric vehicles, but also for other disasters and leisure use.

[0008] This invention has been made in view of the above problems, and aims to provide a simple water storage pool that eliminates the problem of the bottom surface and improves the problems of securing storage space and transporting it to the place of use. [Means for solving the problem]

[0009] The present invention provides a simple water storage pool comprising an annular main tube with an inlet and outlet, a water-stopping section provided on the lower side of the main tube, a side wall sheet provided along the main tube and continuous in the circumferential direction, and a float provided at the upper end of the side wall sheet, and is characterized by being bottomless. [Effects of the Invention]

[0010] The present invention's simple water storage pool is a bottomless annular body having a main tube and side wall sheets, thus avoiding the bottom-related problems described above. Furthermore, when not in use, the contents of the main tube can be drained to reduce its bulk, and it can be made compact by folding or rolling it up. As a result, the present invention's simple water storage pool saves storage space, improving the problem of securing storage space, and can be transported without excessive effort, thus improving the aforementioned transportation problems. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view of a simple water storage pool according to the first embodiment of the present invention. [Figure 2]This is a schematic vertical end view of the first embodiment shown in Figure 1, before water is filled into the simple water storage pool, as shown by line II-II. [Figure 3] This is a schematic vertical end view of the first embodiment shown in Figure 1, where water has been stored in the simple water storage pool, as shown by line II-II. [Figure 4] This is a top view and a side view in the direction of the long side of a simple water storage pool according to a second embodiment of the present invention. [Figure 5] This is an explanatory diagram illustrating the problem of rotation of the main tube in relation to one embodiment of the present invention in which the lower end of the side wall sheet is joined to the apex of the main tube. [Figure 6] This is a photograph showing an example of a simple water storage pool according to the present invention, in a state before water is supplied to the main tube. [Figure 7] Figure 6 is a photograph showing the state in which water is supplied to the main tube and gas is supplied to the hollow float in the simple water storage pool of the present invention, and water has begun to be supplied to the water storage section. [Figure 8] This is a perspective view of the main tube in a simple water storage pool according to the third embodiment of the present invention. [Figure 9] This is a schematic longitudinal cross-sectional view of a simple water storage pool according to the fourth embodiment of the present invention. [Modes for carrying out the invention]

[0012] The present invention provides a simple water storage pool comprising an annular main tube with inlet and outlet ports, a water-stopping section provided on the lower side of the main tube, a circumferentially continuous side wall sheet provided along the main tube, and a float provided at the upper end of the side wall sheet. Because the present invention provides the water-stopping section described above, when water is supplied to the annular water storage section, leakage from the lower side of the main tube to the outside is prevented. Therefore, the present invention provides a simple water storage pool that can easily store water despite having no bottom.

[0013] The simple water storage pool of the present invention, having such a configuration, does not have a bottom, and therefore the problem of holes forming in the bottom does not occur. In addition, because there is no bottom, the overall weight of the simple water storage pool is also reduced. Furthermore, the simple water storage pool of the present invention can be folded or rolled up by discharging the contents of the main body tube to be in a compact state, can be stored in a relatively small space, and is also easy to transport.

[0014] Regarding the present invention, some terms are appropriately defined as follows. The simple water storage pool of the present invention is an annular body, and the portion surrounded by the annular body is called a water storage part. When the simple water storage pool is viewed from an arbitrary point, the side of the water storage part is called the inner side of the pool, and the outside of the water storage part is called the outer side of the pool. The vertex of the main body tube refers to the uppermost part confirmed in the longitudinal section of the main body tube when a simple water storage pool having the main body tube inflated by supplying liquid or liquid and gas is installed on a flat installation surface and before water is supplied to the water storage part. Also, through the center in the longitudinal section, the point opposite to the vertex is called an opposing point. Regarding the side wall sheet of the present invention, the lower end part includes the lower end of the side wall sheet and refers to a predetermined width region from the lower end toward the upper end, and the upper end part includes the upper end of the side wall sheet and refers to a predetermined width region from the upper end toward the lower end. [[ID=一三]]

[0015] An example of the present invention is shown in a photograph. FIG. 6 is a photograph showing an example of the simple water storage pool of the present invention before water is supplied to the main body tube and before water is supplied to the water storage part where gas is supplied to a float made of an airtight tube. The simple water storage pool of the present invention in such a state can be easily made compact by folding or rolling up. The simple water storage pool in FIG. 7 is a photograph showing a state where water is supplied up to the middle part in the height direction of the main body tube. Further, by supplying more water, the position of the float rises with the water surface due to the buoyancy of the float, and following this, the side wall sheet rises to form the side wall of the pool. The following will describe the simple water storage pool of the present invention in detail with reference to the drawings as appropriate. In all the drawings, the same components are denoted by the same reference numerals, and duplicate descriptions will be omitted as appropriate. The drawings used for the description of the present invention do not limit the dimensions, dimensional ratios, and shapes of the present invention and the members included in the present invention.

[0016] [[ID=!3]] [First Embodiment] The following will describe the first embodiment of the present invention with reference to FIGS. 1 to 3. FIG. 1 is a perspective view of a simple water storage pool (100) according to the first embodiment of the present invention, FIG. 2 is a schematic longitudinal end view taken along line II-II of the simple water storage pool (100) shown in FIG. 1 before water is stored therein, and FIG. 3 is a schematic longitudinal end view taken along line II-II of the simple water storage pool according to the first embodiment shown in FIG. 1 when water is stored therein. As shown in FIGS. 1 to 3, the simple water storage pool (100) includes an annular main body tube (10) having a water inlet (12) and a drain outlet (14) as water supply and drainage ports, a side wall sheet (30) provided along the main body tube (10) and continuous in the circumferential direction, and a float (40) provided at the upper end portion (34) of the side wall sheet (30). As shown in FIG. 2, in the present embodiment, a water stop tape (20) is provided on the lower surface side of the main body tube (10) as a water stop portion. The lower surface side of the main body tube (10) referred to here means a predetermined region including an opposing point that opposes the vertex Y through the center X in the longitudinal section of the main body tube (10).

[0017] (Main Body Tube) The main body tube (10) is a tube made of a waterproof (liquid-tight) member and expands when water is supplied into it from the water inlet (12). By supplying water to the main body tube (10), the simple water storage pool (100) can be stably installed on the installation surface (230). In addition, the water stop tape (20) described later is pressed downward by the weight of the water supplied to the main body tube (10), and the water stop tape (20) and the installation surface (230) are brought into sufficient close contact to prevent the water in the pool from leaking out from the lower surface side of the main body tube (10). The liquid supplied to the main body tube (10) may be other than water, but water is preferable in terms of ease of drainage and the like.

[0018] The amount of water supplied to the inside of the main tube (10) is not particularly limited, but from the viewpoint of effectively preventing water leakage by sufficiently pressing and compressing the waterproofing tape (20) and ensuring a tight seal with the installation surface (230), it is preferable that the amount of water supplied to 100% of the volume of the main tube (10) be 60% or more, and more preferably 70% or more. The inside of the main tube (10) may be completely filled with water, but in order to expand the cross-section of the main tube (10) until it becomes a perfect circle or nearly perfect circle, gas may be supplied after supplying an appropriate amount of water. Such gas supply may be carried out using the water inlet (12), or a gas supply inlet not shown may be provided separately. If the cross-section of the main tube (10) is a perfect circle or nearly perfect circle, the load of the water supplied to the main tube (10) can be efficiently transmitted to the waterproofing tape (20).

[0019] The water supplied to the main tube (10) can be discharged from the drain port (14) after use of the simple water storage pool. In this embodiment, a drain port (14) is provided separately from the water inlet (12), but a water supply and drainage opening that serves both purposes may also be provided.

[0020] The main tube (10) may be made of a waterproof material, and for example, a resin sheet or a rubber sheet is preferably used as the material. To improve the strength of the main tube (10), it is preferable to construct the main tube (10) with a multilayer sheet in which a fiber sheet or the like is laminated on a layer made of a waterproof material. For example, a multilayer sheet with three or more layers in which a fiber sheet layer made of polyester fibers or the like is arranged between opposing rubber sheet layers is a preferred example of a material that constitutes the main tube (10).

[0021] In this embodiment, the main tube (10) of the annular simple water storage pool (100) is rectangular in top view. The four corners of the rectangular main tube (10) have moderately chamfered corners R1. However, the main tube in the present invention is not limited to the shape of this embodiment, and it is important that it is configured in an annular shape to surround a predetermined space. In addition, in this embodiment, the airtight tube float (40) is also rectangular in top view, and the four corners of this rectangle have moderately chamfered corners R2.

[0022] (Water-stopping section) The water-stopping section in this invention is provided on the lower side of the main tube (10) to prevent water from the simple water storage pool (100) from leaking out from the lower side of the main tube (10) to the outside. The mechanism for preventing water leakage of the water-stopping section is not particularly limited, but it is preferable that the water-stopping section is pressed downward and compressed by the weight of the water supplied into the main tube (10), causing it to adhere tightly to the installation surface, thereby preventing water leakage.

[0023] In this embodiment, specifically, a waterproof tape (20) is provided on the lower side of the main tube (10) as a waterproofing section. The waterproof tape (20) is provided continuously in the circumferential direction along the main tube (10) on the lower side of the main tube (10). In this embodiment, the waterproof tape (20) is directly joined to the main tube (10), but the present invention also encompasses a modified example (not shown) in which an arbitrary configuration is interposed between the main tube (10) and the waterproof tape (20), and the main tube (10) and the waterproof tape (20) are joined indirectly.

[0024] The waterproof tape (20) is made of an elastically deformable material such as foamed rubber, and is pressed downward by the weight of the water supplied into the main tube (10), deforming and adhering tightly to the installation surface. As a result, there is virtually no permeable gap between the main tube (10) and the installation surface (230), and water supplied to the water storage section (70) of the bottomless simple water storage pool (100) is effectively prevented from leaking out from the bottom side of the main tube (10). With respect to the waterproof tape (20), elastically deformable means that it deforms when external pressure is applied and returns to its original shape when the external pressure is released.

[0025] As shown in Figures 2 and 3, the waterproof tape (20) includes a point opposite to the vertex Y of the main tube (10) via the center X of the main tube (10), and extends from this point toward the inside and outside of the pool. In this embodiment, the length of the waterproof tape (20) extending toward the inside of the pool from the aforementioned point is the same as the length extending toward the outside of the pool.

[0026] Examples of waterproof tape (20) include a tape-shaped member made of foamed rubber, such as ethylene propylene rubber (EPDM), and a commercially available example is Lucyla SE, manufactured by Toyo Quality One Co., Ltd. The thickness of the waterproofing tape (20) is not particularly limited, but from the viewpoint of ensuring sufficient waterproofing function when compressed, the thickness of the waterproofing tape (20) is preferably 5 mm to 50 mm, more preferably 10 mm to 45 mm, and even more preferably 15 mm to 40 mm. The width dimension of the waterproofing tape (20) is not particularly limited, but considering slight displacement of the main tube (10) and rotation toward the outside of the pool, it is preferably 30 mm to 150 mm, and even more preferably 40 mm to 100 mm. The width dimension of the waterproofing tape (20) is the dimension confirmed in the longitudinal section and refers to the sum of the length extending toward the inside of the pool from the opposing point described above and the length extending toward the outside of the pool. The elastically deformable waterproof tape (20) is compressed and elastically deformed by the weight of the water supplied to the main tube (10) in the area in contact with the ground, and its dimensions in the thickness direction decrease. The rate of thickness reduction during elastic deformation is not particularly limited, but from the viewpoint of being able to adhere better to the installation surface, it is preferable that the maximum rate of thickness reduction be 50% or more, and more preferably 70% or more. The upper limit of the maximum rate of thickness reduction during elastic deformation is not particularly limited, but generally it is good to have it at 95% or less, or at around 90% or less. Here, the maximum rate of reduction of the waterproof tape (20) is calculated by measuring the thickness T0 of the waterproof tape (20) before compression, and the thickness T1 of the area in which the thickness of the waterproof tape (20) has decreased the most when the main tube (10) is expanded after an amount of water equivalent to 80% of the volume of the main tube (10) is supplied to the main tube (10) and gas is supplied to the remaining space. [Formula 1] Maximum reduction rate=100-(T1÷T0×100)

[0027] (Side wall sheet) The side wall sheet (30) is provided along the annular main tube (10) and is continuous in the circumferential direction. The side wall sheet (30) constitutes the side wall of the pool when the simple water storage pool (100) is in use. The side wall sheet (30) is a flexible sheet. In other words, the side wall sheet (30) is a non-self-supporting sheet. Therefore, it can be folded or rolled up when storing or transporting the simple water storage pool (100), contributing to the compactness of the simple water storage pool (100) when not in use.

[0028] The sidewall sheet (30) can be made of a waterproof (liquid-tight) material, and for example, resin sheets or rubber sheets are preferably used as such materials. To improve the strength of the sidewall sheet (30), it is preferable to construct the sidewall sheet (30) with a multilayer sheet in which a fiber sheet or the like is laminated on a layer made of a waterproof material. For example, a multilayer sheet with three or more layers in which a fiber sheet layer made of polyester fibers or the like is arranged between opposing rubber sheet layers is a preferred example of a material for the sidewall sheet (30).

[0029] The location of the joint between the side wall sheet (30) and the main tube (10) is not particularly limited, but in this embodiment, as shown in Figure 2, the lower end (32) of the side wall sheet (30) is joined to the inside of the pool, beyond the apex Y of the expanded main tube (10). As shown in Figure 3, when water is supplied to the reservoir (70) of the simple water storage pool (100), the flexible side wall sheet (30) does not stand upright vertically from the joint with the main tube (10), but is slightly pushed outward from the outside of the pool by the weight of the water. In this case, as in this embodiment, when the joint is on the inside of the pool side of the apex Y of the main tube (10), the water in the reservoir (70) is located just above the apex Y of the main tube (10), and a load is applied downward from near the apex Y (in the direction of the arrow in Figure 3). As a result, the water-stopping tape (20) provided in the region opposite the apex Y is easily compressed, and the water-stopping effect is effectively achieved.

[0030] Figure 5 is an explanatory diagram for explaining the present invention. Figure 5a is a partial schematic vertical end view showing a state in which water and gas are supplied to the main tube (10) and water is not supplied to the water reservoir (70), and Figure 5b is a partial schematic vertical end view showing a state in which water and gas are supplied to the main tube (10) and water is supplied to the water reservoir (70). Unlike the simplified water storage pool (100) of this embodiment, the simplified water storage pool of the present invention shown in Figure 5 has the lower end (32) of the side wall sheet (30) joined near the apex Y. In this embodiment, as shown in Figure 5b, when water (220) is stored in the water storage section (70), the side wall sheet (30) is pushed outwards from the pool, resulting in a rotational force acting on the main tube (10) toward the outside of the pool. In such a case, the water-stopping tape (20) shifts from directly below the main tube (10) and enters the inside of the pool, resulting in a problem where it does not adhere sufficiently to the installation surface (230). This problem may be referred to as the rotation problem of the main tube below. In embodiments where the problem of rotation of the main tube is anticipated, it is preferable to configure the simple water storage pool (100) to substantially prevent water leakage by adding one or more of the second to fourth embodiments described later. In this embodiment, as described above, the problem of rotation of the main tube is suppressed by making the joining position of the lower end (32) of the side wall sheet (30) on the inside of the pool side than the apex Y of the main tube (10). However, in order to further address this problem effectively, one or more of the configurations shown in the second to fourth embodiments described later may be added to the simple water storage pool (100) of the first embodiment. Of course, the present invention includes embodiments in which the joining position of the lower end (32) of the side wall sheet (30) is joined to the apex Y of the main tube (10) or on the outside of the pool side than the apex Y, and one or more of the configurations shown in the second to fourth embodiments described later are added.

[0031] (float) The float (40) is provided on the upper end (34) of the side wall sheet (30). The float (40) is made up of a component that provides buoyancy to water. When water is supplied to the water reservoir (70) of the simple water reservoir pool (100), the float (40) rises with the water surface, and the side wall sheet (30) rises in response, and as a result, the side wall sheet (30) forms the side wall of the pool.

[0032] The float (40) can be a solid or hollow material as long as it exhibits buoyancy in water. For example, it may be a foamed material such as a foamed polyethylene molded body, a hollow ball, or a hollow tube. In this embodiment, specifically, a float (40) made of a hollow tube equipped with an air intake / exhaust port (44) is used. The float (40), made of a hollow tube, is continuous in the circumferential direction, similar to the side wall sheet (30), and partitions the top opening of the pool when water (220) is supplied to the water storage section (70) of the simple water storage pool (100). The float (40), made of a hollow tube equipped with an air intake / exhaust port (44), is preferable because it is provided with buoyancy when in use by supplying gas such as air to the inside, and can be made compact when not in use by discharging the gas from the inside.

[0033] As shown in Figure 3, in this embodiment, the float (40) is joined to the upper end (34) of the side wall sheet (30) on the inside of the pool. In other words, the upper end (34) of the side wall sheet (30) is joined to the side of the float (40) on the outside of the pool. By defining the positional relationship between the float (40) and the side wall sheet (30) in this way, the contact area between the water (220) supplied to the water reservoir (70) and the float (40) can be increased, allowing sufficient buoyancy to be exerted, and the float (40) can firmly raise the side wall sheet (30) upwards.

[0034] The usage of the simple water storage pool (100) having the above-described configuration will be explained using Figures 2 and 3. As shown in Figure 2, first, at a predetermined installation surface (230), water (210) and gas such as air are supplied to the main tube (10) to inflate it, and gas such as air is also supplied to the hollow float (40) to inflate it. In this state, the side wall sheet (30) is in a flexed state. Also, as described above, the simple water storage pool (100) is bottomless, so the installation surface (230) and protrusions (240) such as stones that are randomly scattered on the installation surface (230) are exposed inside the main tube (10), which is a rectangular ring-shaped body when viewed from above. Next, as shown in Figure 3, water (220) is supplied to the inside of the ring-shaped simple water storage pool (100). Since water (210) has already been supplied to the main tube (10), the weight of this water (210) compresses the water-stopping tape (20), causing it to adhere tightly to the installation surface (230) and provide water-stopping properties. As a result, the water (220) supplied to the water storage section (70) of the simple water storage pool (100) is stored inside the simple water storage pool (100). As the water (220) is stored, the position of the float (40) rises, and the side wall sheet (30) rises accordingly, forming the wall of the pool. The state in which the side wall sheet (30) is fully upright represents the maximum water storage capacity of the simple water storage pool (100). In other words, the amount of water (220) stored in the simple water storage pool (100) can also be adjusted, with the height dimension of the side wall sheet (30) as the upper limit. When use as a pool is finished, the water and gas in the main tube (10) and the gas in the hollow tube float (40) can be drained, and the pool can be folded or rolled up to make it compact for transport and storage. After use as a pool is finished and the water in the reservoir (70) has been drained, it is recommended to dry the simple reservoir pool (100) at an appropriate time.

[0035] The simple water storage pool (100) having the above configuration can be used for various purposes, but one particularly preferred use is for water cooling electric vehicles. The simple water storage pool (100) exhibits desirable effects for the special and dangerous task of water cooling electric vehicles. In other words, an electric vehicle that has caught fire and been extinguished is in a dangerous state where it is impossible to know when a secondary fire may occur, making it difficult to move carelessly. In contrast, a simple water storage pool (100), which is a bottomless ring-shaped body, can be placed over the electric vehicle from above so that the electric vehicle is positioned within the ring of the ring-shaped body, and the electric vehicle does not need to be moved. After that, a liquid such as water (220) is quickly supplied to the main tube (10) to inflate the main tube (10), and if necessary, a gas such as air is supplied to adjust the shape, and gas is supplied to inflate the float (40). Of course, the main tube (10) and float (40) may also be inflated to form a rectangular frame before being placed over the electric vehicle. Subsequently, water (220) is supplied to the water storage section (70) of the simple water storage pool (100). At this time, by fixing the end of a long hose or the like to the simple water storage pool (100) and setting up the water supply, the worker can wait away from the electric vehicle. When the side wall sheet (30) is fully upright, or when enough water (220) has been stored to sufficiently cool the electric vehicle, the water supply (220) may be stopped as appropriate. Since the battery of an electric vehicle is located relatively low on the vehicle body, depending on the vehicle model, a water depth of about 50cm to 70cm is sufficient for water cooling in a typical vehicle. Therefore, it is preferable that the height from the bottom of the main tube (100) to the top of the rising side wall sheet (30) of the simple water storage pool (100) prepared for cooling the electric vehicle be 60cm or more, more preferably 70cm or more, even more preferably 70cm or more, and particularly preferably 80cm or more. On the other hand, the upper limit of the height mentioned above is not particularly limited from the standpoint of cooling, but from the standpoint of keeping the total weight of the entire simple water storage pool (100) within a reasonable range, it is preferable that it be 100 cm or less, and more preferably 90 cm or less.

[0036] Furthermore, it is possible to use multiple water-stopping devices disclosed in Patent Document 2, as described above, to surround an electric vehicle and create a water storage space, thereby cooling the electric vehicle by filling this space with water. However, the following problems exist. Specifically, the water-stopping devices have a self-supporting back surface that forms the side walls of the water storage space. If water leakage occurs in any part of the multiple water-stopping devices, the amount of water in the water storage space decreases, and sufficient water cooling cannot be maintained, there is a risk of secondary ignition of the electric vehicle. Therefore, workers must periodically look into the water storage space to check whether the amount of water in the space is sufficient. However, approaching an electric vehicle that is at risk of secondary ignition is dangerous. In contrast, the simple water storage pool (100) has sides made up of flexible side wall sheets (30) and floats (40). Therefore, if a water leak occurs and the water level in the pool decreases, the floats (40) will be lowered and the side wall sheets (30) will bend. As a result, workers can roughly confirm the amount of water stored in the water storage section (70) by visually checking the height of the floats (40) and the condition of the side wall sheets (30) from a distance, without having to approach the simple water storage pool (100) and look into the water storage section (70). If it is confirmed that the water (220) has decreased from the initial level, water can be supplied again from the installed long hose or the like. In this way, the simple water storage pool (100) can cool electric vehicles while giving sufficient consideration to the safety of the workers.

[0037] [Second Embodiment] A simple water storage pool (120) according to a second embodiment of the present invention will be described below with reference to Figure 4. Figure 4 is a top view and a side view of one side in the direction of the long edge of the simple water storage pool (120) according to the second embodiment of the present invention. The simple water storage pool (120) is configured similarly to the simple water storage pool (100) of the first embodiment, except that, when viewed from above, the annular main tube (10) is roughly rectangular, consisting of a short side (18) and a long side (16), and has a bent portion (50) in the middle of the long side (16) that bends inward towards the pool. Therefore, the following description will primarily focus on the bent portion (50), and the description of the first embodiment will be referenced as appropriate for other components.

[0038] The simple water storage pool (120) of this embodiment has a bend (50) on its long side (16), which makes it less likely for the main tube (10) to rotate, as described above using Figure 5. The reason for this is not clear, but it is presumed that the short side (18), where the distance between the rectangular corners (R1) is relatively short, is less prone to the problem of the main tube (10) rotating than the long side (16). Therefore, by providing a bend (50) in the middle of the long side (16) and dividing the long side (16) by the short distance between the rectangular corners (R1) and the bend (50), it is possible to prevent the long side (16) of the main tube (10) from rotating. Furthermore, in order to rotate the long side (16), which has a bent section (50) in the middle, toward the outside of the pool, a force is also required to lift the entire bent section (50) in the middle upwards. Therefore, from this point of view as well, it can be inferred that the long side (16) of the simple water storage pool (120) is difficult to rotate.

[0039] In this embodiment, the bent portion (50) is configured as a recess that bends inward towards the pool when viewed from above. Specifically, the long side (16) is configured with a straight portion (51) of the long side (16), a first bent portion (52) extending inclined toward the pool from the straight portion (51) toward the pool, a bent bottom portion (54) extending parallel to the straight portion (51) from the first bent portion (52), a second bent portion (56) extending inclined toward the pool from the bent bottom portion (54), and a straight portion (57) connecting the second bent portion (56) and the other end of the long side (16). The straight portion (51) and the straight portion (57) are arranged on the same straight line. In this configuration, the long side (16) is divided into three parts: both ends and the first bent section (52) and second bent section (56) in the middle. This makes it less likely for the rotation problem of the main tube (10), as explained using Figure 5, to occur in each of the straight section (51), bent bottom section (54), and straight section (57), which are shorter than the total length of the long side (16).

[0040] [Third Embodiment] A third embodiment of the present invention will be described below with reference to Figure 8. Figure 8 is a perspective view of the main tube (10), showing an embodiment in which two additional components have been added to the main tube (10) in the first embodiment. The first additional configuration in the third embodiment is an anti-rotation wedge (62) inserted into the underside of the main tube (10) from the outside of the pool towards the inside of the pool. In this embodiment, three anti-rotation wedges (62) are installed on the long side (16) of the main tube, but the number of wedges installed is not particularly limited. By installing the anti-rotation wedges (62), the main tube (10) is physically supported from below, making it possible to prevent the main tube (10) from rotating due to the water pressure when water is stored in the water reservoir (70). The position where the anti-rotation wedges (62) are installed is not limited to the long side (16).

[0041] The second additional configuration in the third embodiment is a tension member (64) that connects two opposing long sides (16) of the main tube (10). In the main tube (10) shown in Figure 8, the two opposing long sides (16) are connected by engaging the tip of a tension member (64) extending from one long side (16) with an engaging portion (66) provided on the other long side (16). By providing such a tension member (64), when a force that promotes rotation is applied to the long side (16) of the main tube (10), it is possible to physically resist that force.

[0042] The tensile member (64) can be any long object with appropriate strength, and may be a rod, a rope, a chain, or the like. The second additional configuration is intended to connect two opposing long sides (16) to resist rotational force, as described above, and the configuration for tensile forces is not particularly limited as long as it does not deviate from this purpose.

[0043] [Fourth Embodiment] A fourth embodiment of the present invention, a simple water storage pool (140), will be described below with reference to Figure 9. Figure 9 is a vertical end view of the simple water storage pool (140), showing that the main body tube (10) and float (40) are in an expanded state, and that no water is being supplied to the water storage section (70). The simple water storage pool (140) is configured similarly to the simple water storage pool (100) in the first embodiment, except that the water-stopping tape (20) is provided in a wider width. Therefore, this description will mainly focus on the water-stopping tape (20) in this embodiment, and other configurations will be described by referring to the description of the first embodiment as appropriate.

[0044] In this embodiment, the waterproof tape (20) is provided such that the distance from the opposing point Z to the outer end (22) of the waterproof tape (20) is longer than the distance from the opposing point Z to the inner end (24), with respect to the opposing point Z which is opposite to the vertex Y via the center X of the main tube (10). Therefore, even if the main tube (10) rotates in the simple water storage pool (140), any area of ​​the wide waterproof tape (20) facing outwards from the pool can be positioned directly beneath the rotated main tube (10). As a result, the weight of the water supplied to the main tube (10) compresses the waterproof tape (20) located directly beneath the main tube (10), causing it to adhere well to the installation surface (230) and effectively stop the water stored in the water storage section (70).

[0045] In this embodiment, as shown in Figure 9, when the opposing point Z is set to 0 degrees, the water-stopping tape (20) observed in the longitudinal section extends 90 degrees toward the outside of the pool. That is, the angle formed by the opposing point Z, the center X, and the outer end (22) is 90 degrees. When the opposing point Z is set to 0 degrees, the waterproof tape (20) observed in the longitudinal section preferably extends to the outside of the pool at an angle of up to 30 degrees, more preferably extends beyond 30 degrees to 45 degrees, even more preferably extends beyond 45 degrees to 60 degrees, and particularly preferably extends beyond 60 degrees to 90 degrees. That is, the above angle is preferably greater than 30 degrees and 90 degrees or less, more preferably greater than 30 degrees and 45 degrees or less, even more preferably greater than 45 degrees and 60 degrees or less, and particularly preferably greater than 45 degrees and 90 degrees or less. The region in which the waterproof tape (20) extends to the outside of the pool may be the entire circumferential direction, only the long side (16) where rotation problems are likely to occur, or even only a partial region such as near the center of the long side (16) where rotation is likely to occur.

[0046] The first to fourth embodiments of the present invention have been described above. The two additional configurations in the second and third embodiments are both configurations to solve the problem of rotation of the main tube, and the fourth embodiment prevents water leakage even if the problem of rotation of the main tube occurs. These embodiments may be provided in the simple water storage pool of the present invention as appropriate, either individually or in combination of two or more.

[0047] The above embodiment encompasses the following technical concepts. (1) An annular main tube equipped with an inlet and outlet, A water-stopping section provided on the lower side of the main tube, A side wall sheet provided along the main tube and continuous in the circumferential direction, A float provided at the upper end of the side wall sheet, Equipped with, A simple water storage pool characterized by having no bottom. (2) In a top view, The aforementioned annular main tube is roughly rectangular in shape, consisting of a short side and a long side. A simple water storage pool as described in (1) above, having a bent portion in the middle of the long side that bends toward the inside of the pool. (3) The simple water storage pool according to (1) or (2) above, wherein the lower end of the side wall sheet is joined to the inside of the pool, beyond the apex of the expanded main tube. (4) The float is attached to the pool interior side of the side wall sheet, and is a simple water storage pool as described in any one of (1) to (3) above. (5) The water-stopping portion is composed of a water-stopping tape made of an elastically deformable material, The water-stopping tape is provided continuously in the circumferential direction along the main tube on the lower side of the main tube, in the simple water storage pool according to any one of the above items (1) to (4). (6) A simple water storage pool as described in any one of items (1) to (5) above, for water cooling of an electric vehicle. [Explanation of Symbols]

[0048] 10. Main tube 12...Water inlet 14...Drain port 16...Long side 18...short side 20...Waterproof tape 22...outer end 24...Inner end 30... Side wall sheet 32...lower end 34...Top end 40... Float 44... Intake and exhaust vents 50...Bend 51, 57... Straight section 52...first bending part 54...bent bottom 56...Second bending part 62. Anti-rotation wedge 64. Tensile members 66...Engaging part 70...Water storage section 100, 120, 140... Simple water storage pools 210, 220...Wednesday 230...Installation surface 240...protrusion R1... Corner R2... Corner X...Center Y... vertex Z... Opposite point

Claims

1. An annular main tube equipped with an inlet and outlet, A water-stopping section provided on the lower side of the main tube, A side wall sheet provided along the main tube and continuous in the circumferential direction, A float provided at the upper end of the side wall sheet, Equipped with, A simple water storage pool characterized by having no bottom.

2. In a top view, The aforementioned annular main tube is roughly rectangular in shape, consisting of a short side and a long side. The simple water storage pool according to claim 1, having a bent portion that bends inward towards the inside of the pool at the middle of the long side.

3. The simple water storage pool according to claim 1, wherein the lower end of the side wall sheet is joined to the inside of the pool, beyond the apex of the expanded main tube.

4. The simple water storage pool according to claim 1, wherein the float is joined to the inside of the pool on the side wall sheet.

5. The aforementioned water-stopping portion is composed of a water-stopping tape made of an elastically deformable material. The simple water storage pool according to claim 1, wherein the water-stopping tape is provided continuously in the circumferential direction along the main tube on the lower surface side of the main tube.

6. A simple water storage pool according to any one of claims 1 to 5, for use in water cooling an electric vehicle.

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