Portable Tank

Abstract

To provide a portable tank capable of easily sucking liquid in a liquid tank using a pump even when the remaining amount of liquid stored in a tank body is small, and achieving a light weight and a small size while ensuring a desired tank capacity.SOLUTION: A portable tank 1 includes a tank body 2 having a storage part capable of storing liquid. The tank body 2 includes a rectangular plate-shaped first wall part 2a, a second wall part 2b and a third wall part 2c that form the storage part 20. The second wall part 2b is inclined to be positioned upward as it separates from the first wall part 2a. The third wall part 2c is inclined to be positioned upward as it separates from the first wall part 2a.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a portable tank capable of storing a liquid. [Background technology]

[0002] Portable tanks used for storing liquid fuels such as kerosene and drinking water have been known. For example, a portable tank disclosed in Patent Document 1 includes a tank body having a substantially box-like shape capable of storing liquid, and an upper wall of the tank body is provided with a liquid inlet / outlet into which a nozzle portion of a fuel pump can be inserted. The bottom wall of the tank body is shaped so that its thickness gradually increases as it moves away from a position facing the liquid inlet / outlet. That is, the upper surface of the bottom wall of the tank body is inclined so as to be positioned upward as it moves away from a position facing the liquid inlet / outlet, while the lower surface of the bottom wall portion of the tank body is shaped to extend horizontally. Therefore, when the remaining amount of liquid stored in the tank body becomes low, the liquid is guided to the upper surface of the bottom wall of the tank body and collected in a partial area facing the liquid inlet / outlet, making it easier to remove the liquid remaining in the tank body to the outside of the tank body by a fuel pump or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 60-154236 Summary of the Invention [Problem to be solved by the invention]

[0004] However, unlike a stationary tank that is installed at a specified location for use, the above-mentioned portable tank is required to be lightweight and small while ensuring a desired tank capacity because the user carries it around for use. In this regard, if the bottom wall of the tank body is shaped so that the upper surface is inclined and the lower surface extends horizontally, as in Patent Document 1, the outer shape of the tank body must be increased by the area where the upper surface of the bottom wall is inclined, and the tank body not only becomes heavier but also larger, which may make it impossible to realize a lightweight and small portable tank suitable for carrying by the user.

[0005] The present invention has been made in consideration of the above-mentioned points, and its object is to provide a portable tank that can easily suck up the liquid in the liquid tank using a pump even when there is a small amount of liquid remaining in the tank body, and that is lightweight and compact while maintaining the desired tank capacity. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the present invention is characterized by its ingenuity in allowing liquid accumulating in the tank body to be collected in a certain area inside the tank body without significantly changing the thickness of the wall that constitutes the tank body.

[0007] Specifically, the present invention is directed to a portable tank having a tank body with a storage section capable of storing liquid via a liquid inlet and outlet, and the following solution has been taken.

[0008] That is, in the first aspect of the present invention, the tank body includes a first wall portion and a second wall portion which form the storage portion. 、 3rd wall , the fourth wall portion, the fifth wall portion, the sixth wall portion, the seventh wall portion, the eighth wall portion, and the ninth wall portionand configured such that, when the container is placed on a placement surface with the first wall portion as a bottom surface, the liquid inlet / outlet is in a position that opens upward, the first wall portion has a rectangular plate shape, the second wall portion has a rectangular plate shape and is formed continuously with one end of the first wall portion, and is inclined so as to be positioned upward as it moves away from the first wall portion, and the third wall portion has a rectangular plate shape and is formed continuously with the other end of the first wall portion, and is inclined so as to be positioned upward as it moves away from the first wall portion. the fourth wall portion extends from an edge of the second wall portion opposite to the first wall portion in a direction perpendicular to the first wall portion, the fifth wall portion extends from an edge of the third wall portion opposite to the first wall portion in a direction perpendicular to the first wall portion, the sixth wall portion extends from an edge of the fourth wall portion opposite to the second wall portion in a direction perpendicular to the fourth wall portion, the seventh wall portion extends from an edge of the fifth wall portion opposite to the third wall portion in a direction perpendicular to the third wall portion and parallel to the second wall portion, and an edge of the seventh wall portion opposite to the fifth wall portion is connected to an edge of the sixth wall portion opposite to the fourth wall portion, a ninth wall portion covers one opening of an annular portion formed by the first wall portion, the second wall portion, the third wall portion, the fourth wall portion, the fifth wall portion, the sixth wall portion, and the seventh wall portion, and the ninth wall portion covers the other opening of the annular portion, the eighth wall portion is formed with a convex portion that protrudes outward from the tank body, the ninth wall portion is formed with a concave portion that is recessed inwardly of the tank body and has a shape that can be fitted with the convex portion, the convex portion has a protruding shape that extends in an annular manner and has a water drop shape when the eighth wall portion is viewed from the front, and the concave portion has a concave groove shape that extends in an annular manner and has a water drop shape when the ninth wall portion is viewed from the front. It is characterized by the fact that

[0009] In the second invention, in the first invention ,before The water inlet and outlet are equipped with a single-lever faucet. but Installation Be It is characterized by the fact that

[0010] In the third invention, in the first or second invention, , the above The seventh wall portion is characterized in that an opening having a larger opening area than the liquid inlet / outlet is formed.

[0011] In a fourth aspect of the present invention, in the third aspect of the present invention, the opening is provided with a filter covering the opening. but Installation Be It is characterized by the fact that

[0012] In the fifth invention, From 1 Fourth Either In the invention ,before 6th wall The part , The sixth wall portion has a stepped shape in which a region farther from the fourth wall portion is located above a region closer to the fourth wall portion, and the liquid inlet / outlet and the liquid outlet / inlet are provided in a lower step of the sixth wall portion. A handle that the user can hold when carrying the portable tank and but In order from the fourth wall side Established Become It is characterized by the fact that Effect of the Invention

[0015] In the first invention, the second and third walls adjacent to the first wall that forms the bottom of the tank body are rectangular and inclined, so that the desired tank capacity can be ensured, and when the remaining amount of liquid to be stored is low, the liquid can be guided to the first wall and collected on the upper surface of the first wall. Also, since the second and third walls are spaced apart from the mounting surface, the tank has a small external shape and is compact, and the weight of the entire portable tank can be reduced by the amount of the space formed between the second and third walls and the mounting surface. In the first aspect of the invention, a plurality of portable tanks are prepared, and the eighth and ninth wall portions are aligned vertically and stacked in order so that the eighth wall portions face the same direction. The convex portion of one portable tank fits into the concave portion of the other adjacent portable tank. Therefore, for example, the portable tanks can be prevented from collapsing when transporting them together, and the stacked portable tanks can be maintained in a stable state. In the first aspect of the invention, the convex portion and the concave portion each have a ring-shaped protrusion or groove shape, so that when the multiple portable tanks are stacked, for example, each portable tank does not rotate around a center line extending in the vertical direction relative to the portable tank located below, and the stacked state can be maintained in a more stable state. Furthermore, when a user looks at the eighth and ninth walls provided for stacking the portable tanks, the user will associate the convex and concave portions with liquid, which not only gives the portable tank a certain association with the liquid that it is intended to store, but also improves the external appearance of the portable tank.

[0016] In the second aspect of the present invention, when the portable tank is placed on a support surface with the fourth or fifth wall portion as the bottom surface and a single-lever faucet is attached to the liquid inlet / outlet, the portable tank becomes a water server. In this way, the portable tank can be used for purposes other than transporting liquids.

[0017] In the third aspect of the invention, when the portable tank is placed on a support surface in rainy weather with the seventh wall portion on the top and the second wall portion on the bottom, the opening portion larger than the liquid inlet / outlet opens upward. Therefore, when the portable tank is placed outside in rainy weather, more rainwater is taken into the storage portion of the tank body through the large opening, and a large amount of rainwater can be stored in the storage portion in a short period of time.

[0018] In the fourth aspect of the invention, when rainwater is taken into the storage section of the tank body through the opening, the filter captures foreign matter that tries to enter the storage section through the opening together with the rainwater or separately from the rainwater. Therefore, it is possible to prevent foreign matter from entering the storage section of the tank body when rainwater is stored in the storage section of the tank body.

[0019] In the fifth invention, when the portable tank has the first wall portion as the bottom surface, and the user grips the handle and applies force toward the second wall portion, the portable tank rolls to one side, and the second wall portion becomes the bottom surface, and the opening portion opens upward. Therefore, for example, when the user tries to fill the storage portion with no liquid and put the stored items, such as textile products such as towels and food, into the storage portion without any gaps, the user can easily store the stored items in the storage portion. On the other hand, when the portable tank has the first wall portion as the bottom surface, and the user grips the handle and applies force toward the third wall portion, the portable tank rolls to the other side, and the third wall portion becomes the bottom surface, and the opening portion opens to the side. Therefore, the opening portion of the tank body can be directed toward the user, and therefore, even a short child can easily take out the stored items from the storage portion. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a perspective view of a portable tank according to the present invention. [Diagram 2] FIG. 2 is a front view showing a state in which a first cap and a second cap are removed in the portable tank according to the present invention. [Diagram 3] 1 is a front view showing a first usage mode in which the portable tank according to the present invention is placed on a support surface with the first wall portion serving as a bottom surface. FIG. [Figure 4] 10 is a front view showing a second usage mode in which the portable tank according to the present invention is placed on a support surface with the second wall portion serving as a bottom surface. FIG. [Diagram 5] 11 is a front view showing a third usage mode in which the portable tank according to the present invention is placed on a support surface with the second wall portion serving as a bottom surface. FIG. [Figure 6] 13 is a front view showing a fourth usage mode in which the portable tank according to the present invention is placed on a support surface with the third wall portion serving as a bottom surface. FIG. [Figure 7] 2 sectional view taken along line AA in FIG. 2 , showing a fifth usage mode in which the portable tank according to the present invention is placed on a support surface with the ninth wall portion serving as a bottom surface. FIG. [Figure 8]13 is a front view showing a sixth mode of use in which the portable tank of the present invention is placed on a support surface with the fourth wall portion as the bottom surface and a single-lever water faucet is attached to the liquid inlet and outlet. FIG. [Figure 9] FIG. 13 is a front view showing a seventh usage mode in which a hose is attached to a liquid inlet and outlet in the portable tank according to the present invention. [Figure 10] 13 is a front view showing an eighth usage mode in which the portable tank of the present invention is placed on a support surface with the first wall portion serving as the bottom surface, and a pump type shower unit is attached to the liquid inlet and outlet. FIG. [Figure 11] FIG. 13 is a plan view showing a ninth usage mode in which a filter is attached to an opening of the portable tank according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which: It should be noted that the following description of the preferred embodiments is merely exemplary in nature.

[0024] Fig. 1 shows a portable tank 1 according to an embodiment of the present invention. The portable tank 1 includes a substantially nine-sided tank body 2, and a storage section 20 capable of storing liquid is formed inside the tank body 2. Note that the storage section 20 is capable of storing an object X1, such as a textile product such as a towel or food, when no liquid is stored in the storage section 20 (see Figs. 5 and 6).

[0025] The tank body 2 has a short, approximately heptagonal prism shape, with seven first to seventh wall portions 2a to 2g arranged in a ring shape around the column center line, and an eighth wall portion 2h and a ninth wall portion 2i extending parallel to and opposite each other and spaced apart in the direction of the column center line, and the first to ninth wall portions 2a to 2i form a storage portion 20.

[0026] The first wall portion 2a has a rectangular plate shape, and the rectangular inner region on the outer surface of the first wall portion 2a has a stepped shape that is recessed inwardly of the tank body 2 further than the rectangular frame-shaped outer region, as shown in Figure 7.

[0027] 1, the second wall portion 2b is formed continuously with one end of the first wall portion 2a in the longitudinal direction, and has a rectangular plate shape with approximately the same plate thickness as the outer region of the first wall portion 2a. The second wall portion 2b is inclined so as to be positioned upward as it moves away from the first wall portion 2a, and the interior angle formed by the second wall portion 2b and the first wall portion 2a is set to approximately 130 degrees.

[0028] The third wall portion 2c is formed continuously with the other end of the first wall portion 2a in the longitudinal direction, and has a rectangular plate shape with a plate thickness set to be substantially the same as that of the outer region of the first wall portion 2a. The third wall portion 2c is inclined so as to be positioned upward as it moves away from the first wall portion 2a, and the interior angle formed by the third wall portion 2c and the first wall portion 2a is set to be approximately 130 degrees.

[0029] The fourth wall 2d extends from an edge of the second wall 2b on the opposite side to the first wall 2a in a direction perpendicular to the first wall 2a. The fourth wall 2d has a rectangular plate shape with approximately the same plate thickness as the second wall 2b, and the interior angle between the fourth wall 2d and the second wall 2b is set to approximately 130 degrees.

[0030] The fifth wall 2e extends from an edge of the third wall 2c on the opposite side to the first wall 2a in a direction perpendicular to the first wall 2a and parallel to the fourth wall 2d. The fifth wall 2e has a rectangular plate shape with approximately the same plate thickness as the third wall 2c, and the interior angle between the fifth wall 2e and the third wall 2c is set to approximately 130 degrees.

[0031] The sixth wall 2f is provided continuously with the edge of the fourth wall 2d on the opposite side to the second wall 2b. The sixth wall 2f extends parallel to the first wall 2a so as to face the first wall 2a, and the interior angle between the sixth wall 2f and the fourth wall 2d is set to about 90 degrees.

[0032] The sixth wall portion 2f has a stepped shape in which an area of ​​the sixth wall portion 2f farther from the fourth wall portion 2d is located higher than an area of ​​the sixth wall portion 2f closer to the fourth wall portion 2d.

[0033] In the lower part of the sixth wall portion 2f, a liquid inlet / outlet 6 communicating with the storage portion 20 and a handle 5 that a user can hold when carrying the portable tank 1 are provided in order from the fourth wall portion 2d side, and a first cap 10 covers the liquid inlet / outlet 6.

[0034] As shown in Figure 2, the liquid inlet / outlet 6 is composed of a first protruding portion 6a which is approximately tubular and protrudes from the outside of the tank body 2, and a first screw-fitting portion 6b which is formed on the outer surface of the first protruding portion 6a and can be screwed into the inner peripheral portion of the first cap 10. As shown in Figure 3, when the first cap 10 is removed, it is possible to insert a suction pipe 25a of a liquid pump 25 which can suck up liquid by the pumping action of the pump portion 25b.

[0035] As shown in FIG. 8, a single-lever water faucet 30 can be attached to the liquid inlet / outlet 6 when the first cap 10 is removed.

[0036] As shown in FIG. 9, a hose 32 can be attached to the liquid inlet / outlet 6 when the first cap 10 is removed.

[0037] Furthermore, as shown in FIG. 10, a pump type shower unit 33 can be attached to liquid inlet / outlet 6 when first cap 10 is removed.

[0038] As shown in FIG. 1, the seventh wall portion 2g is a region bridging the edge of the fifth wall portion 2e on the opposite side to the third wall portion 2c and the upper portion of the sixth wall portion 2f, extending in a direction perpendicular to the third wall portion 2c and parallel to the second wall portion 2b, with the interior angles formed by the seventh wall portion 2g and the sixth wall portion 2f being each set to approximately 130 degrees.

[0039] The seventh wall portion 2g has an opening 16 communicating with the storage portion 20, and the second cap 11 covers the opening 16.

[0040] As shown in FIG. 2, the opening 16 is composed of a second protruding portion 16a having an approximately tubular shape protruding from the outside of the tank body 2, and a second screw-fitting portion 16b formed on the outer circumferential surface of the second protruding portion 16a and capable of screwing into the inner circumferential portion of the second cap 11.

[0041] The opening 16 has an opening area larger than the liquid inlet / outlet 6, and the opening area is set to be large enough for a user to insert his / her hand into the storage section 20 of the tank body 2 to store the contained item X1 in the storage section 20, or to remove the contained item X1 from the storage section 20.

[0042] As shown in FIG. 11, a filter 35 that covers the opening 16 can be attached to the opening 16 when the second cap 11 is removed from the opening 16.

[0043] The eighth wall portion 2h has a substantially heptagonal shape, and as shown in FIG. 7, covers one opening of the annular portion formed by the first to seventh walls portion 2a to 2g.

[0044] A convex portion 3a that protrudes outward from the tank body 2 is formed in the center of the eighth wall portion 2h, and the convex portion 3a has a ring-shaped protrusion shape and is approximately teardrop-shaped when the eighth wall portion 2h is viewed from the front.

[0045] As shown in Figure 1, the ninth wall portion 2i has an approximately heptagonal shape that covers the other opening of the annular portion formed by the first to seventh walls 2a to 2g, and a recess 3b that is recessed into the inside of the tank body 2 is formed in the center.

[0046] The recess 3b forms a ring-shaped recess and is roughly teardrop-shaped when the ninth wall portion 2i is viewed from the front, and is shaped so that it can fit into the protrusion 3a formed on the eighth wall portion 2h.

[0047] Here, since the eighth wall portion 2h and the ninth wall portion 2i have a larger area than the other wall portions in the tank body 2, when the portable tank 1 is placed on a supporting surface with the first wall portion 2a as the bottom surface, the convex portion 3a and the concave portion 3b formed in the center of the eighth wall portion 2h and the ninth wall portion 2i, respectively, are easily visible to the user.

[0048] Next, modes 1 to 9 of use of the portable tank 1 will be described.

[0049] <Usage 1> FIG. 3 shows a first usage mode of the portable tank 1. In the first usage mode, it is assumed that the portable tank 1 of the present invention is used as a kerosene tank for a kerosene stove, and the tank body 2 is placed on a surface to be placed with the first wall portion 2a as the bottom surface. At this time, the second cap 11 is attached to the opening 16 and the first cap 10 is removed from the liquid inlet / outlet 6, so that the liquid inlet / outlet 6 is in an upwardly open position. In the first usage mode, the upper surface of the second wall portion 2b and the upper surface of the third wall portion 2c are inclined downward as they approach the first wall portion 2a, so that when the remaining amount of liquid (e.g., kerosene) stored in the storage portion 20 of the tank body 2 becomes low, the liquid is guided by the upper surface of the second wall portion 2b and the upper surface of the third wall portion 2c and is collected on the upper surface of the first wall portion 2a.

[0050] In this state, after inserting suction pipe 25a of liquid pump 25 into liquid inlet / outlet 6 and bringing the suction port of suction pipe 25a close to the upper surface of first wall portion 2a, the user repeatedly squeezes and releases pump portion 25b, and the liquid collected on the upper surface of first wall portion 2a by the pumping action of pump portion 25b is sucked into suction pipe 25a from the suction port of suction pipe 25a and moves toward pump portion 25b, and then discharged via discharge pipe 25c.

[0051] <Usage 2> 4 shows a second usage mode of the portable tank 1. In this second usage mode, it is assumed that the portable tank 1 of the present invention is used to collect rainwater, and the tank body 2 is placed on a support surface with the second wall portion 2b as the bottom surface. At this time, the first cap 10 is attached to the liquid inlet / outlet 6 and the second cap 11 is removed from the opening 16, so that the opening 16 is in an upwardly open position.

[0052] When the portable tank 1 in the second usage mode is placed on an outdoor surface during rainy weather, rainwater is taken into the storage section 20 of the tank body 2 through the opening 16, which has a large opening area, and a large amount of rainwater is collected in the storage section 20 in a short time compared to when rainwater is taken into the storage section 20 through the liquid inlet / outlet 6, which has a small opening area. The rainwater collected in the storage section 20 can be used, for example, to water flowers, vegetables, and the like that the user is cultivating.

[0053] <Usage 3> 5 shows a third usage mode of the portable tank 1. In the third usage mode, it is assumed that the storage section 20 of the portable tank 1 of the present invention stores objects X1, such as textile products such as towels and food, and the tank body 2 is placed on a surface to be placed, with the second wall section 2b serving as the bottom surface. In other words, the portable tank 1 is in a position in which the opening 16 opens upward.

[0054] When the tank body 2 is placed on a placement surface with the first wall portion 2a as the bottom surface, in a state where no liquid is stored in the storage portion 20 of the tank body 2, in order to place the stored items X1, such as food, in the storage portion 20 through the opening 16 without any gaps, it is necessary to visually check the storage state of the stored items X1 in the storage portion 20 through the opening 16. However, since the opening 16 opens diagonally upward, attempting to visually check the inside of the storage portion 20 through the opening 16 puts the user in a position that places a burden on the user, such as bending the waist or neck excessively, and therefore it becomes difficult for a user who is particularly uneasy about the waist to visually check the inside of the storage portion 20 through the opening 16, and it is not easy to store the stored items X1 in the storage portion 20 without any gaps.

[0055] In contrast, when the first wall 2a of the portable tank 1 is at the bottom, and the user grasps the handle 5 and applies force to the second wall 2b side to roll the portable tank 1 to one side so that the second wall 2b is at the bottom and the opening 16 opens upward, the user can perform the work of storing the object X1 while looking into the storage section 20 through the opening 16 from above without having to excessively bend the waist, etc. Therefore, the storing work can be easily performed even when the object X1 is placed in the storage section 20 without any gaps.

[0056] <Usage 4> 6 shows a fourth usage mode of the portable tank 1. In the fourth usage mode, it is assumed that an object X1, such as a textile product such as a towel or food, is stored in the storage section 20 of the portable tank 1 of the present invention, and the tank body 2 is placed on a placement surface with the third wall section 2c as the bottom surface, and the second cap 11 is removed from the opening 16 for use. In other words, the portable tank 1 is in a position in which the opening 16 opens to the side.

[0057] When the tank body 2 is placed on a placement surface with the first wall portion 2a as the bottom surface, the opening 16 opens obliquely upward. Therefore, when no liquid is stored in the storage portion 20 of the tank body 2, for example, a short child or the like tries to store the object X1 in the storage portion 20 through the opening 16, the user is forced to assume a posture that places a burden on the user, such as raising the upper arm upward and bending the elbow to bend the part from the forearm downward obliquely. In addition, if the eye height of a short user is low, if the opening 16 opens obliquely upward, the user cannot look into the storage portion 20 through the opening 16, and the storage state of the object X1 in the storage portion 20 cannot be grasped. Therefore, in the case of a short user, it is not easy to take out the object X1 stored in the storage portion 20 from the storage portion 20.

[0058] In contrast, when the first wall 2a of the portable tank 1 is at the bottom, if a user grasps the handle 5 and applies force toward the third wall 2c, and rolls the portable tank 1 to the other side so that the third wall 2c is at the bottom and the opening 16 is open to the side, even a short user such as a child can look into the storage section 20 through the opening 16 that opens to the side, and can easily access the storage section 20 through the opening 16, making it easy to store the item X1 in the storage section 20, such as easily removing the item X1 stored in the storage section 20 from the storage section 20.

[0059] <Usage 5> 7 shows a fifth usage mode of the portable tank 1. In the fifth usage mode, storage and transportation of a plurality of portable tanks 1 of the present invention are assumed, and the tank body 2 is placed on a placement surface with the ninth wall portion 2i as the bottom surface, and the plurality of portable tanks 1 are stacked in order on the tank body 2. Specifically, in the fifth usage mode, a plurality of portable tanks 1 are prepared, and the portable tanks 1 are stacked in order with the eighth wall portion 2h and the ninth wall portion 2i aligned in the vertical direction and with each of the eighth wall portions 2h facing upward.

[0060] At this time, the vertically adjacent portable tanks 1 are stacked in order by fitting the recessed portion 3b of the upper portable tank 1 into the protruding portion 3a of the lower portable tank 1. When multiple portable tanks 1 are stacked in this manner, the protruding portions 3a and recessed portions 3b of two adjacent portable tanks 1 fit together, so that it is possible to prevent the portable tanks 1 from collapsing when, for example, multiple portable tanks 1 are transported or stored together, and the stacked portable tanks 1 can be maintained in a stable state.

[0061] Furthermore, since the convex portions 3a and concave portions 3b formed on the portable tank 1 each have a circular extending protrusion or concave groove shape, even if a force is suddenly applied to one of the multiple stacked portable tanks 1, each portable tank 1 will not rotate around a center line extending in the vertical direction relative to the portable tank 1 located below, thereby further stabilizing the state of each stacked portable tank 1.

[0062] In addition, when stacking or unloading the portable tank 1, the convex portion 3a formed on the eighth wall portion 2h that forms the upper surface of the portable tank 1 is easily visible to the user. The user will associate the drop-shaped convex portion 3a with a liquid that has a certain relationship to the liquid to be stored in the portable tank 1, improving the user's impression of the external appearance of the portable tank 1.

[0063] <Usage 6> FIG. 8 shows a sixth usage mode of the portable tank 1. In the sixth usage mode, it is assumed that the portable tank 1 of the present invention is used as a water server, and the tank body 2 is placed on a mounting base 31, which is a mounting surface, with the fourth wall portion 2d (or the fifth wall portion 2e) as the bottom surface. At this time, the user removes the first cap 10 from the liquid inlet / outlet 6, then attaches a single-lever type water faucet 30 to the liquid inlet / outlet 6 and adjusts the position of the portable tank 1 so that the water faucet 30 is in a position protruding from the outer periphery of the mounting base 31. In this way, by attaching the water faucet 30 to the liquid inlet / outlet 6, the portable tank 1 can be used as a water server and can be used for purposes other than transporting liquids.

[0064] <Usage 7> 9 shows a seventh usage mode of the portable tank 1. In this seventh usage mode, it is assumed that the portable tank 1 of the present invention is used as a watering can, and a user removes the first cap 10 from the liquid inlet / outlet 6, and then attaches the hose 32 to the liquid inlet / outlet 6 for use. Specifically, by gripping the handle 5 and operating the portable tank 1, the user can, for example, water plants or the like through the hose 32 by using rainwater collected in the storage section 20.

[0065] <Usage 8> 10 shows a usage mode 8 of the portable tank 1. In this usage mode 8, it is assumed that the portable tank 1 of the present invention is used as a simple shower, and a user uses the portable tank 1 by attaching a pump type shower unit 33 after removing the first cap 10 from the liquid inlet / outlet 6. Specifically, the user can take a shower with water stored in the portable tank 1, for example, when enjoying leisure activities at the sea or in the mountains.

[0066] <Usage 9> FIG. 11 shows a 9th usage mode of the portable tank 1. In the 9th usage mode, it is assumed that the portable tank 1 of the present invention is used to collect rainwater, and the tank body 2 is placed on a placement surface with the second wall portion 2b as the bottom surface. At this time, the second cap 11 is removed from the opening 16, and then the filter 35 is attached to the opening 16. In this way, when rainwater is taken into the storage portion 20 of the tank body 2 through the opening 16, the filter 35 collects foreign matter that tries to enter the storage portion 20 through the opening 16 together with the rainwater or separately from the rainwater. Therefore, it is possible to prevent foreign matter from entering the storage portion 20 of the tank body 2 when rainwater is collected in the storage portion 20 of the tank body 2.

[0067] As described above, according to the embodiment of the present invention, the second wall 2b and the third wall 2c adjacent to the first wall 2a, which is the bottom surface of the tank body 2, are rectangular plate-like and inclined, so that the desired tank capacity can be ensured, and when the remaining amount of liquid to be stored is small, the liquid can be guided to the first wall 2a and collected on the upper surface of the first wall 2a. Also, since the second wall 2b and the third wall 2c are separated from the mounting surface, the outer shape is small and compact, and the weight of the entire portable tank 1 can be reduced by the amount of the space formed between them and the mounting surface.

[0068] Furthermore, when the portable tank 1 is placed on a support surface in a rainy weather position with the seventh wall 2g on the top and the second wall 2b on the bottom, the opening 16, which is larger than the liquid inlet / outlet 6, opens upward. Therefore, when the portable tank 1 is placed outside in rainy weather, more rainwater is taken into the storage section 20 of the tank body 2 through the large opening 16, and a large amount of rainwater can be stored in the storage section 20 in a short period of time.

[0069] Furthermore, when the user grips the handle 5 and applies force to the second wall 2b side with the first wall 2a at the bottom of the portable tank 1, the portable tank 1 rolls to one side with the second wall 2b at the bottom and the opening 16 opens upward. Therefore, for example, when the user is trying to place the object X1, such as a textile product such as a towel or food, in the storage section 20 without any gaps when no liquid is stored in the storage section 20, the user can easily store the object X1 in the storage section 20. On the other hand, when the user grips the handle 5 and applies force to the third wall 2c side with the first wall 2a at the bottom of the portable tank 1, the portable tank 1 rolls to the other side with the third wall 2c at the bottom and the opening 16 opens to the side. Therefore, the opening 16 of the tank body 2 can be directed toward the user, so that even a short person such as a child can easily remove the contained item X1 stored in the storage section 20 from the storage section 20.

[0070] Furthermore, if multiple portable tanks 1 are prepared and stacked in order with the eighth wall 2h and the ninth wall 2i aligned in the vertical direction and with each eighth wall 2h facing the same direction, the recess 3b of one adjacent portable tank 1 will fit into the protrusion 3a of the other portable tank 1. This makes it possible to prevent the portable tanks 1 from collapsing when transporting the portable tanks 1 together, for example, and allows the stacked portable tanks 1 to be maintained in a stable state.

[0071] In addition, since the convex portion 3a and the concave portion 3b each have a ring-shaped protrusion or concave groove shape, when multiple portable tanks 1 are stacked, for example, each portable tank 1 will not rotate around a center line extending in the vertical direction relative to the portable tank 1 located below, and the stacked state can be maintained in a more stable state. In addition, when a user sees the eighth wall portion 2h and the ninth wall portion 2i prepared for stacking the portable tanks 1, the user will associate the convex portion 3a and the concave portion 3b with liquid, so that not only can a certain association with the liquid to be stored in the portable tank 1 be achieved, but the external appearance of the portable tank 1 can also be improved.

[0072] In addition, in the embodiment of the present invention, the tank body 2 has an approximately heptagonal prism shape that is short in the direction of the column center line, but it may also have a shape that is long in the direction of the column center line, or even a hexagonal or octagonal prism shape, for example.

[0073] In the embodiment of the present invention, the tank body 2 is a substantially nonahedron, but it may be an octahedron or a decahedron, for example.

[0074] In addition, in the embodiment of the present invention, a handle 5 is provided on the sixth wall portion 2f of the tank body 2, but the handle 5 may be provided on other wall portions that constitute the tank body 2, or the handle 5 may not be provided.

[0075] Furthermore, in the embodiment of the present invention, the opening 16 is formed, but the opening 16 does not necessarily have to be formed.

[0076] In the embodiment of the present invention, the sixth wall portion 2f has a stepped shape, but it may have a flat plate shape.

[0077] Furthermore, in the embodiment of the present invention, the convex portion 3a and the concave portion 3b are formed, but the convex portion 3a and the concave portion 3b may not be provided, or only one of them may be provided.

[0078] In the embodiment of the present invention, the convex portion 3a and the concave portion 3b are drop-shaped when viewed from the front, but they may be round, rectangular, star-shaped, or other shapes.

[0079] In the embodiment of the present invention, the first to fifth walls 2a to 2e and the seventh wall 2g are formed in a rectangular plate shape, but the present invention is not limited to this and may be formed in any shape as long as it is in a rectangular plate shape. [Industrial Applicability]

[0080] The present invention is suitable for a portable tank having a tank body having a storage portion capable of storing liquid via a liquid inlet and outlet. [Explanation of symbols]

[0081] 1 Portable tank 2 Tank body 2a 1st wall 2b 2nd wall part 2c 3rd wall section 2d 4th wall 2e 5th wall 2f 6th wall section 2g 7th wall 2h 8th wall 2i 9th wall section 3a Convex part 3b recess 5 Handle 6 Liquid inlet / outlet 16 Opening 30 Single-lever faucet 35 Filters

Claims

1. A portable tank including a tank body having a storage section capable of storing liquid through a liquid inlet and outlet, the tank body includes a first wall portion, a second wall portion, a third wall portion, a fourth wall portion, a fifth wall portion, a sixth wall portion, a seventh wall portion, an eighth wall portion, and a ninth wall portion which form the storage portion, and is configured such that when the tank body is placed on a placement surface with the first wall portion as a bottom surface, the liquid inlet / outlet is in a position in which it opens upward; The first wall portion has a rectangular plate shape, The second wall portion has a rectangular plate shape, is formed continuously with one end of the first wall portion, and is inclined so as to be positioned upward as it moves away from the first wall portion. the third wall portion has a rectangular plate shape, is formed continuously with the other end of the first wall portion, and is inclined upward as it moves away from the first wall portion, the fourth wall portion extends from an edge portion of the second wall portion opposite to the first wall portion in a direction perpendicular to the first wall portion, the fifth wall portion extends from an edge portion of the third wall portion opposite to the first wall portion in a direction perpendicular to the first wall portion, the sixth wall portion extends from an edge portion of the fourth wall portion opposite to the second wall portion in a direction perpendicular to the fourth wall portion, The seventh wall portion extends from an edge portion of the fifth wall portion opposite to the third wall portion in a direction perpendicular to the third wall portion and parallel to the second wall portion, and an edge portion of the seventh wall portion opposite to the fifth wall portion is connected to an edge portion of the sixth wall portion opposite to the fourth wall portion, the eighth wall portion covers one opening of an annular portion formed by the first wall portion, the second wall portion, the third wall portion, the fourth wall portion, the fifth wall portion, the sixth wall portion, and the seventh wall portion, The ninth wall portion covers the other opening of the annular portion, The eighth wall portion is formed with a protrusion that protrudes outward from the tank body, The ninth wall portion has a recess that is recessed toward the inside of the tank body and has a shape that can be fitted with the protrusion, The convex portion has a ring-shaped protrusion shape and has a teardrop shape when the eighth wall portion is viewed from the front, The portable tank is characterized in that the recess has a ring-shaped groove shape and has a teardrop shape when viewed from the front of the ninth wall portion.

2. 2. The portable tank according to claim 1, A portable tank characterized in that a single-lever water faucet is attached to the liquid inlet and outlet.

3. The portable tank according to claim 1 or 2, The seventh wall portion is provided with an opening having a larger opening area than the liquid inlet / outlet.

4. The portable tank according to claim 3, A portable tank characterized in that a filter covering the opening is attached to the opening.

5. The portable tank according to any one of claims 1 to 4, the sixth wall portion has a stepped shape in which a region of the sixth wall portion farther from the fourth wall portion is located higher than a region of the sixth wall portion closer to the fourth wall portion, A portable tank characterized in that the lower portion of the sixth wall portion is provided with the liquid inlet / outlet and a handle that a user can hold when carrying the portable tank, in that order from the fourth wall portion side.

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