JP3993219B1 - Simple bathtub sheet and simple bathtub using the sheet - Google Patents

Abstract

[PROBLEMS] To easily fold a storage tank and to completely deploy it, to easily drain, wash and dry after use, and to be stored in a folded state without any risk of breakage from a fold. Provided are a liquid storage tank sheet, a liquid storage tank using the sheet, and a simple bathtub.
A liquid storage tank that is folded into a three-dimensional shape that conforms to the inner surface shape of a rigid frame body 2 and is held from the periphery by the frame body to receive liquid from an upper surface opening and maintain the liquid storage state. A sheet for a liquid storage tank, wherein the folds 31 to 37 are gripped over the entire length of the sheet 1 and the entire region of the gripped part is fixed to the part that is folded when folded. 1.
[Selection] Figure 1

Description

The present invention relates to easy easy bath using a suitable simple bath seat and seat to or reserving the hot water for the nursing care is bathing of the sick and the elderly need.

Conventionally, as a liquid storage tank, for example, a leakage-free water folding box described in Japanese Patent Laid-Open No. 2-45346 (Patent Document 1) or an assembled water tank described in Japanese Patent Application Laid-Open No. 2004-150069 (Patent Document 2). It has been known.

  The box described in Patent Document 1 is formed of a waterproof sheet provided with a fold, and when used, the sheet can be folded and formed into a box-shaped container quickly and easily for transporting water. It can be folded flat from the center fold and stacked.

  On the other hand, the water storage tank described in Patent Document 2 uses an assembly unit material to form a tank body having a desired shape as a whole, and is provided with a plurality of hooks in the tank body. A water storage tank according to the required storage capacity by combining the desired number of tanks with the tank body as a unit by hooking the upper edge to make the tank body a liquid-tight structure and by using a common assembly unit material Can be configured.

  Separately, as a simple bathtub, for example, a bath water bath described in JP 2001-231701 A (Patent Document 3) and a bath sheet used for the bath are known. This bathing hot water tank consists of a sheet with a broken line that can be folded along the sink recess in a sink, etc., so that infants and pets can bathe without touching the sink directly. This eliminates the need to disinfect the sink every time it is used.

  Furthermore, as a simple bathtub which can bathe an elderly person or a sick person who needs care by a safe and simple method, for example, a simple bath described in JP-A-10-295770 (Patent Document 4) , A nursing tub described in Japanese Patent Application Laid-Open No. 2005-205003 (Patent Document 5), a bathtub for a wheelchair described in Japanese Patent Application Laid-Open No. 2003-19179 (Patent Document 6), or Japanese Patent Application Laid-Open No. 8-52190 ( An assembly-type assistance bathtub described in Patent Document 7) is known.

  In the simple bath described in Patent Document 4, a chair is installed inside and a frame is assembled on the outer periphery of a water-resistant bag whose upper part is open so that water can be stored, and the upper end outer periphery of the water-resistant bag is detachably fixed to the frame. Thus, the water storage state in the water-resistant bag can be maintained.

  The nursing tub described in Patent Document 5 includes an upper-opening bathtub case that can accommodate a wheelchair, and a bottomed and upper-opened sheet material having a peripheral side portion that is substantially the same shape as the peripheral side plate of the bathtub case. It consists of an inner bag.

  The bathtub for wheelchairs described in Patent Document 6 has a foldable bathtub frame, a hole with a hole around it, and a rope that passes through it. It consists of a sheet that is bent and used as a bathtub in the bathtub frame.

The assembly-type assistance bathtub described in Patent Document 7 has a tank made of a flexible sheet member in which a bathtub frame and a fold line are formed, and the tank folded along the fold line is an upper rectangular frame of the bathtub frame. It is incorporated between the lower rectangular frames, a space is formed below the bottom of the tank, and traveling means are provided at the lower end of the support rod.
JP-A-2-45346 JP 2004-150069 A JP 2001-231701 A Japanese Patent Laid-Open No. 10-295770 Japanese Patent Laid-Open No. 2005-205003 JP 2003-19179 A JP-A-8-52190

  However, any of the techniques described in any of the above-mentioned patent documents is not satisfactory particularly as a sheet used for storing a large volume of water. This will be described in detail below.

  The sheet used in the box described in Patent Document 1, the bath sheet described in Patent Document 3, and the sheet member described in Patent Document 7 are formed with folds at the portions to be folded to form a predetermined shape. However, the crease was merely a crease, that is, a crease constituted by a heat ruled line or a groove formed by heat and pressure forming that has been conventionally known in the crease forming technology for synthetic resin sheets. In such a sheet having a conventional crease, only the amount of water corresponding to the water storage capacity of the box of Patent Document 1 that only assumes the storage of the amount of water that can be carried by a person or the sink of the washroom is assumed. The problem is not caused in the bath sheet of Patent Document 3 that is not used, but when storing a large amount of water of several hundred liters as seen in Patent Document 2 and Patent Documents 4 to 7, a large water pressure is required for each storage. Is applied to the sheet as a load, and the crease formed by the above-mentioned well-known technique is locally thinned and the mechanical strength is inevitably reduced. There was a risk that the sheet would break from the crease over time. In addition, when a hot object such as hot water is to be stored, the sheet is usually made of a synthetic resin, so it is easily softened by heat received from hot water in addition to the large water pressure described above. It was supposed to further promote breakage at. Such breakage of the sheet is not so important even if it occurs in a relatively small capacity as seen in Patent Document 1 or Patent Document 3, but it is used for bathing elderly and sick people who need care. If this occurs in the seat, the amount of hot water is large as described above, so there is a very high possibility that the hot water will flow out of the seat as quickly as flash water. If it occurs while taking a bath, there was a risk that the elderly or sick would fall seriously injured by the impact. In addition, since bathing requiring care is often performed in a room other than the bathroom, there has been a problem that if an outflow accident occurs in such a room, the subsequent processing is difficult.

  Even if the above-mentioned breakage does not occur, especially when a large amount of hot water is repeatedly stored, the crease portion of the sheet is gradually stretched by applying water pressure under heating, thereby causing the crease. However, there was also a problem that it became difficult to understand which part of the sheet should be folded, and it became impossible to fold well.

  On the other hand, in the sheets described in Patent Documents 2, 4 and 5, since the sheets are formed in a predetermined shape in advance, there is no problem due to the folds as described above. However, since it is molded into a predetermined three-dimensional shape such as a bag, it is difficult to fold it small during storage, and there is a problem that a corresponding storage space is required. In addition, since it cannot be flatly developed at all, it is difficult to carry out the cleaning work after use, and since it is dried after the cleaning work, it cannot be dried well and it takes time to dry. It was.

  In this respect, the seat described in Patent Document 6 can be fully developed, and thus there is no such problem, but the accordion-like portions having different inner and outer folding widths are provided at the four corners. For this reason, there is a problem that processing of this portion is actually difficult and expensive. In addition, there is a problem that it is not preferable in terms of hygiene because the scale easily accumulates in the groove of the accordion-like portion and it is difficult to clean this portion.

The present invention has been made to solve the above problems, with folding stand work to the bathtub is simple, it can be completely deployed, drained after use, folded to the washing and drying sequence are intended to save is easy, yet providing easy easy bath with risk-free simple bath seat and the seat of the fracture from the fold. In the following description of the present invention, unless otherwise specified, the description of simply a sheet is synonymous with a simple bathtub sheet.

In order to solve the above-mentioned problem, the sheet for a simple bathtub according to the present invention is a rectangular parallelepiped shape, and the front surface is folded into a three-dimensional shape that conforms to the shape of the inner surface of a frame having rigidity that can be opened and closed for bathers to enter and exit. A frame that is held from the periphery by the frame, receives hot water from the upper surface opening, and maintains the hot water storage state , and has a rectangular shape and is hooked on the upper edge of the frame at the center of each edge A simple bathtub sheet provided with a latching piece, which is a portion that is folded when folded, wherein the front surface of the periphery of the bottom surface of the frame body has a central portion that becomes the bottom surface of the bathtub after folding. A crease is provided at each of the portions corresponding to the three sides excluding one side facing the sheet, and a fold is provided at each line connecting the four corners of the bottom of the frame and the four corners of the sheet. It is of the crease, Is formed by with picking over a portion its length to secure the entire area of the I's portion該摘, the folding stand has a peripheral edge portion of the sheet into three folds and the front disposed around the central portion of the sheet Folding along one side facing each other, and overlapping portions at the four corners are folded along the folds extending from the four corners of the sheet toward the center, and the portions folded in this way are the frame body. The front side and the rear side of the sheet are attached to the outer surface of the folded sheet, locked to the outer surface by a locking member provided on the outer surface of the sheet, and the other folded portion is further added thereto. In addition, it is performed by being locked by a locking member provided on the outer surface of the sheet .
Because of this specific matter, the strength of the crease part is much higher than that of a conventional sheet in which the crease is simply formed by heat ruled lines or heat and pressure, so the crease may disappear even after repeated use. There is no risk of breaking from the crease. In addition, since there is no gap in the picked part, there is no risk of accumulation of scale or scale in this part.
In addition, since the crease is not formed at the boundary between the center part that becomes the bottom of the bathtub after folding and the front part that is opened when the bather enters and leaves, the front is opened when the bather enters and exits. Sometimes, the surface of the seat is as smooth as possible, so that the bather does not get caught in the seat.

  The sheet may be a heat-sealable synthetic resin sheet. In that case, the picked portion is fixed by heat-seal.

  By this specific matter, the sheet materials are fused and integrated in the picked portion, and even if it is a synthetic resin sheet that is easily stretched by heat, the strength of the fold portion is simply a thermal ruled line or Compared to a conventional sheet in which a crease is formed by heating and pressing, the sheet is much higher, so that the crease does not disappear even after repeated use, and there is no possibility of breaking from the crease. In addition, since there is no gap in the picked portion, there is no possibility that water or scales will accumulate in this portion.

In addition, the sheet may be a cloth sheet formed with a synthetic resin layer that can be heat-sealed at least on the inner surface of the bathtub and is impermeable to water. It is assumed that it was made by wearing.

  According to this specific matter, the synthetic resin layers on the surface of the sheet material are fused and integrated in the picked portion, and the strength of the fold portion is simply a crease formed by heat ruled lines or heating and pressing. Therefore, the crease will not disappear even after repeated use, and there is no possibility of breaking from the crease. In addition, since there is no gap in the picked portion, there is no possibility that water or scales will accumulate in this portion. Furthermore, since the sheet material is a cloth, unlike a synthetic resin sheet, the sheet material does not expand and contract under the influence of heat, and is excellent in durability.

  Further, the sheet may be a cloth sheet imparted with water-imperviousness by a synthetic resin layer formed on at least one surface. In this case, the picked portion is fixed by sewing.

  By this particular matter, the sheet material is integrated by sewing at the picked part, and the strength of the crease part is simply compared with the conventional sheet in which the crease is formed by heat ruled lines or heat and pressure, Since it becomes remarkably high, the crease does not disappear at all even if it is used repeatedly, and there is no possibility of breaking from the crease. In addition, the manufacturing cost can be reduced because it can be carried out by sewing operations which are generally performed. Furthermore, since the sheet material is a cloth, unlike a synthetic resin sheet, the sheet material does not expand and contract under the influence of heat, and is excellent in durability.

  In addition, the sheet is provided with a drain outlet at an arbitrary position in the region corresponding to the bottom of the tank, and the drain outlet is made of the same material as the sheet and the tip is raised to a position higher than the storage surface. A drainage hose having a length that can be used may be connected.

This particular matter in the reservoir the hot water water, only previously listed at a position higher than the reservoir surface the tip of the drainage hose (liquid level), to maintain the reservoir conditions without stoppered especially water outlet it can. And when draining, all the amount is drained smoothly by the hydraulic pressure (water pressure) in the tank simply by lowering the drain hose to a position lower than the bottom of the tank.

The simple bathtub which concerns on this invention consists of a frame which has the rigidity which can be assembled and disassembled, and any one of the above-mentioned sheet for simple bathtubs .

The simple bathtub sheet according to the present invention is much higher in strength of the fold portion than a conventional sheet in which the crease is simply formed by heat ruled lines or heating and pressurization. The folds never disappear. Therefore, the sheet can be folded at the correct position at any time.

  Moreover, since the strength of the fold portion is high, there is no possibility of breaking from the fold. Therefore, especially in the case of a simple bathtub, there is no risk of hot water flowing out during bathing, and the safety is excellent.

  Furthermore, since there is no gap in the picked portion, there is no possibility that water or scale will accumulate in this portion. Therefore, cleaning after use is simple and excellent in hygiene.

  In addition, since it can be fully deployed, it can be easily dried after use, can be folded compactly, does not take up storage space, and is excellent in handleability.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view seen from the outer surface side (the surface side that is the outer side of the tank) showing a state in which a simple bathtub sheet according to the present invention is deployed, and FIG. 2 is a view in which a drain hose is provided on the sheet shown in FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIGS. 1 and 2, FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 7 to FIG. 7 are perspective views showing the sheet folding process, FIG. 8 is an exploded perspective view showing the simple bathtub, FIG. 9 is a perspective view showing the simple bathtub in the storage state, and FIG. 10 is a state where the front of the simple bathtub is opened. FIG.

The sheet 1 is folded into a three-dimensional shape that conforms to the inner surface shape of the rigid frame body 2 (see FIGS. 8 to 10), in this case a rectangular parallelepiped shape (see FIGS. 5 to 8) and is surrounded by the frame body 2. The hot water is received from the upper surface opening and the hot water storage state is maintained (see FIG. 9).

Folds 31 to 37 are provided at locations where the folding is performed. In the sheet shown in FIG. 1 and FIG. 2, three fold lines 31, 32, 33 are formed in the center portion of the sheet 2 corresponding to the three sides of the periphery of the bottom surface of the frame body 2, and the four corners of the bottom surface of the frame body. Folds 34, 35, 36, and 37 are provided on the line connecting the position corresponding to 1 and the four corners of the sheet. Here, only three creases are provided at the center of the sheet 1 as shown in FIG. 10 when the front surface is opened in consideration of the convenience of bathing in and out of the bather. bather as a smoothing Ru der order to prevent or hook your feet on the seat 1.

  As shown in FIG. 3, the folds 31 to 37 are formed by pinching a portion to be bent over the entire length and fixing the entire portion of the pinched portion. Since the folds 31 to 37 are formed in this way, the strength of the folds 31 to 37 is much higher than that of a conventional sheet in which the folds are simply formed by thermal ruled lines or heating and pressing. For this reason, the folds 31 to 37 do not disappear at all even after repeated use, and there is no possibility of breaking from the folds 31 to 37. In addition, since there is no gap in the picked portion, there is no possibility that water or scales will accumulate in this portion.

  It should be noted that the creases need not be provided at all the folding positions of the sheet 1, but may be provided at least at the positions serving as a guide for the folding operation.

  As the sheet, a heat-sealable synthetic resin sheet is preferably used. In that case, fixing of the picked portion performed in forming the folds 31 to 37 is performed by heat fusion. As a result, the sheet materials are fused and integrated in the picked portion, and the strength of the fold lines 31 to 37 is merely a thermal ruled line even if it is a synthetic resin sheet that is easily stretched by heat. Or a conventional sheet with folds formed by heating and pressing, the folds 31 to 37 do not disappear at all even after repeated use, and the folds 31 to 37 may be broken. There is no. In addition, since there is no gap in the picked portion, there is no possibility that water or scales will accumulate in this portion.

  Examples of the synthetic resin sheet include polyethylene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polypropylene, polyester, polycarbonate, nylon, polystyrene, ethylene vinyl acetate copolymer, ethylene vinyl acetate alcohol copolymer, and ionomer. First, any material can be used as long as the heat fusion is possible.

  Further, the sheet 1 is a cloth sheet formed by forming a synthetic resin layer that can be heat-sealed at least on the inner surface of the reservoir layer and exhibits water permeability, in addition to the synthetic resin as described above. Also good. In that case, the picked portion is fixed by heat fusion. Examples of the material of the synthetic resin layer formed here include the various synthetic resins listed above. In the liquid storage tank sheet having such a configuration, the synthetic resin layers on the surface of the sheet material are fused and integrated in the picked portion, and the strength of the fold portion is simply a thermal ruled line or Compared to a conventional sheet in which a crease is formed by heating and pressing, the sheet is much higher, so that the crease does not disappear even after repeated use, and there is no possibility of breaking from the crease. In addition, since there is no gap in the picked portion, there is no possibility that water or scales will accumulate in this portion. Furthermore, since the sheet material is a cloth, unlike a synthetic resin sheet, the sheet material does not expand and contract under the influence of heat, and is excellent in durability.

  In addition, the sheet may be a cloth sheet imparted with water permeability by a synthetic resin layer formed on at least one surface. In that case, the picked portion is fixed by sewing. As a result, the sheet materials are integrated together by sewing at the picked portion, and the strength of the crease portion is significantly higher than that of a conventional sheet in which the crease is simply formed by heat ruled lines or heat and pressure. Since it becomes high, the crease does not disappear at all even after repeated use, and there is no possibility of breaking from the crease. In addition, the manufacturing cost can be reduced because it can be carried out by sewing operations which are generally performed. Furthermore, since the sheet material is a cloth, unlike a synthetic resin sheet, the sheet material does not expand and contract under the influence of heat, and is excellent in durability.

  In the sheet 1 described above, as shown in FIGS. 1 and 2, a plurality of locking members 4 for fixing the overlapping portions of the sheets to each other when folded are provided at appropriate positions on the outer surface side of the sheet 1. Is provided. Usually, a hook-and-loop fastener is preferably used as the locking member 4, but a hook made of synthetic resin or metal may be used.

  In addition, a frame hooking piece 5 projects from the outer peripheral edge of the sheet 1 at the center of each edge. These frame hooks 5 are hooked on the upper edge of the frame 2 as shown in FIGS.

  The sheet 1 shown in FIG. 2 is obtained by providing the above-described sheet 1 with a drain hose 6. The drain hose 6 has a base end connected to a drain port 7 (see FIGS. 4 to 9) formed in the center of the sheet 1, and the length of the drain hose 6 is higher than the storage surface. It is a length that can be raised. The drainage hose 6 is made of the same material as the sheet 1.

  As shown in FIG. 4, the seat 1 is attached to the drain port 7 by inserting the base end portion 61 of the drain hose 6 into the inner surface side of the sheet 1 and spreading it to the peripheral portion of the drain port 7. After the ring-shaped fixing sheet 9 made of the same material as the sheet 1 is polymerized from the base end portion 61 to the inner surface of the sheet 1, the fixing sheet 9, the base end portion 61 and the sheet 1 are integrally thermocompression bonded. Is done. In FIG. 4, symbol V indicates a groove formed by this thermocompression bonding. The drain port 7 is formed at the center of the sheet 1 because the center of the sheet 1 bends due to the weight of the water, and water concentrates here, so that all water is led to the drain port 7 during drainage. This is because it does not remain on the sheet 1.

  Next, the simple bathtub using said sheet | seat 1 is demonstrated.

  As shown in FIGS. 8 to 10, the simple bathtub is composed of a frame 2 having rigidity that can be assembled and disassembled, and the sheet 1.

In the present embodiment, the frame body 2 is formed by assembling a plurality of pipes into a rectangular parallelepiped shape and providing the reinforcing sheet 1 in addition to the upper surface. Incidentally, the frame 2 is not limited to such forms, for example, Patent Document 2 and Patent but it may also be those formed by combining a plurality of panels as seen in Document 5.

  The sheet 1 is folded into a three-dimensional shape along the inner surface shape of the frame body 2 and is held from the periphery by the frame body 2. Hereinafter, the procedure for folding the sheet 1 to configure the tank will be described with reference to FIGS. 5 to 7, and the procedure for assembling the simple bathtub will be described with reference to FIGS. 8 and 9.

  First, the peripheral edge portion of the sheet 1 is folded along the fold lines 31 to 33 arranged around the central portion of the sheet, and the overlapping portions at the four corners are folded from the four corners of the sheet 1 toward the central portion. Fold along line 37 (see FIGS. 5 and 6).

  Next, the folded portion 8 is attached to the outer surface of the folded sheet 1, and is locked to the outer surface by the locking member (surface fastener) 4, and the other folding is further performed thereon. The overlapped portions 8 are attached and locked by the corresponding locking members 4. This operation is performed for each of the front side and the rear side of the tank. Thereby, the tank 10 is folded up (see FIG. 7).

  The tank 10 thus formed is housed in the frame 2 and the drainage hose 6 is pulled out to the outside of the frame 2 with the lower side of the frame 2 hidden. 5 is hooked on the upper edge of the frame body 2, and the fixing clip 11 is fitted to the hooked portion from above, and the frame body retaining piece 5 is fixed to the upper edge of the frame body 2. This completes the fixing of the tank 10 to the frame 2 and completes the simple bathtub. When completed, as shown in FIG. 9, the tip of the drainage hose 6 is lifted and hooked on the upper edge of the frame body 2 positioned nearest to the drainage hose 6 and fixed using the fixing clip 11. Thereafter, hot water is stored in the tank 10 and used for bathing.

  Here, while the hot water W is being stored, as shown in FIG. 9, the drain hose 6 has its tip 62 positioned higher than the storage surface (liquid level). Even if not, the storage state can be maintained. When draining, the drainage hose 6 is simply lowered to a position lower than the bottom surface of the tank 10, and the entire amount is smoothly drained by the water pressure in the tank 10.

In addition, when a bather is a person who cannot enter into the tank 10, if it opens the front surface of the frame 2 and the front surface of the tank 10 ahead, it can go in and out without making from here. 8 and 9, reference numeral 12 indicates a latch for locking the front surface of the frame body 2. Moreover, the tank 10 may be comprised with the sheet | seat 1 as shown in FIG.

It is the perspective view seen from the outer surface side (surface side used as the outer side of a tank) which shows the state which expand | deployed the sheet | seat for simple bathtubs which concerns on this invention. FIG. 2 is a view corresponding to FIG. 1 of the sheet shown in FIG. 1 provided with a drain hose. It is sectional drawing which shows the crease | fold provided in the sheet | seat and follows the III-III line in FIG.1 and FIG.2. It is sectional drawing which shows the connection part of a drainage hose and follows the IV-IV line in FIG. It is a perspective view which shows the folding process of a sheet | seat. It is a perspective view which shows the folding process of a sheet | seat. It is a perspective view which shows the folding process of a sheet | seat. It is a disassembled perspective view which shows a simple bathtub. It is a perspective view which shows the simple bathtub in a storage state. It is a perspective view which shows the state which open | released the front surface of the simple bathtub.

Explanation of symbols

1 Sheet for simple bathtub 2 Frame
4 locking members
5 frame hanging piece
8 folded parts 31-37 crease

Claims (6)

It is a rectangular parallelepiped shape, and the front surface is folded to a three-dimensional shape that conforms to the inner surface shape of a rigid frame body that can be opened and closed for bathers to enter and exit, and is held from the periphery by the frame body. A sheet for a simple bathtub that receives and maintains the hot water storage state, is a rectangular shape, and has a frame latching piece protruding from the upper edge of the frame at the center of each edge ,
A fold line is formed at each of the portions corresponding to three sides excluding one side facing the front surface of the periphery of the bottom surface of the frame body at a central portion that becomes a bottom surface of the bathtub after the folding. Folds are also provided on the lines connecting positions corresponding to the four corners of the bottom surface of the frame and the four corners of the sheet, and these seven folds are gripped over the entire length of the seven folds. It is formed by fixing the whole area of the part,
The folding is performed by folding the peripheral edge of the sheet along three creases arranged around the center of the sheet and one side facing the front surface, and the overlapping portions at the four corners are centered from the four corners of the sheet. Folding along the folds extending toward the part, the portions folded in this way are attached to the outer surface of the folded sheet on the front surface side and the rear surface side of the frame body and on the outer surface of the sheet It is carried out by locking to the outer surface by the provided locking member, and then adding the other folded portion to it and locking it by the locking member provided on the outer surface of the sheet. A simple bathtub sheet. The sheet for a simple bathtub according to claim 1, wherein the sheet is a heat-sealable synthetic resin sheet, and the picked portion is fixed by heat-sealing. The sheet is a cloth sheet formed with a synthetic resin layer that can be heat-sealed at least on the inner surface of the bathtub and has a water-impervious property, and the pinched portion is fixed by heat-sealing. The simple bathtub sheet according to claim 1. The simple bath tub according to claim 1, wherein the sheet is a cloth sheet imparted with water permeability by a synthetic resin layer formed on at least one surface, and the picked portion is fixed by sewing. Sheet. In the sheet, a drain outlet is formed at an arbitrary position in a region corresponding to the bottom of the tank, and the drain outlet is made of the same material as the sheet and can be lifted up to a position higher than the storage surface. The simple tub sheet according to any one of claims 1 to 4, wherein a drainage hose having a thickness is connected. A frame body having an assembly and disassembly is possible rigidity, simplified bath consisting of a simple bath seat according to any one of claims 1 to 5.

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