JP2005060987A - Drainage structure of bathroom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage structure of a bathroom, which can prevent drainage from intruding into a dressing room with no step with respect to a washing place, even if a large quantity of drainage is temporarily generated in the washing place, and which can prevent the drainage from intruding into a bathtub installation part, in ordinary use. <P>SOLUTION: A drain gutter 24 is formed on the bathtub-installation-part 21 side of a bank part 22 for partitioning the washing place 20 and the bathtub installation part 21. A water passage 14, which makes the washing place part 20 and the installation part 21 communicate with each other, and a water reservoir (13), which retains water flowing into the installation part 21 from the washing place part 20 via the water passage 14, until the quantity of the water reaches a fixed quantity, and which discharges the water, exceeding the fixed quantity, into the drain gutter, are provided directly on the drain gutter 24. A watertight material 11, which is inserted between a lower end of an apron 10 for covering a side part of the bathtub 3 and an upper end of the bank part 22 and which is watertightly held in the state of being sandwiched between the apron 10 and the bank part 22, is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drainage structure of a bathroom unit, and more particularly to a drainage structure of a bathroom in which a step between a washing place and a dressing room is eliminated.

  In recent years, there has been an increasing demand for barrier-free bathrooms in which the steps between the washing area and the dressing room are eliminated so that elderly people and persons with physical disabilities can take a bath easily.

  However, if the steps at the entrance / exit are eliminated, it will be necessary to devise measures to prevent water from leaking from the bathroom to the dressing room. In particular, overflowing water in the bathtub does not occur frequently, but in the unlikely event that a large amount of water flows into the washroom so that the dressing room is submerged, it is necessary to devise a special treatment method. is there.

  As a method of coping with this problem, a method of completely stopping a large amount of overflowing water from the bathtub with only the door can be considered. However, making the door completely sealed requires not only a Gremon tablet or the like, but also a need to make the wall structure itself robust in order to support heavy objects, which causes a significant increase in cost. In addition, in the case of sliding doors, there are problems such as being difficult to solve technically at present and limiting the number of doors that can be installed even if the doors are completely stopped. Above all, such a strict thing does not fit into ordinary houses.

  Conventionally, in such a bathroom without a step, a side groove is provided in front of the door or around the washing place, and a lattice-like grating is disposed thereon to cope with this problem. However, this method has a problem in that the area ratio of the grating to the washing area is increased, the design property is lowered, and the area of the washing area is felt to be narrower than the actual area. It also gives the impression that the grating is weak in strength and that it is unsanitary due to drainage. In addition, since the grating is grid-like, dirt easily adheres to it and the drainage flow becomes worse. Therefore, the grating around the washing area must be periodically cleaned, which is troublesome. Was.

  Therefore, a method has been proposed in which drainage from the washing area that reaches the door is provided with a drain pipe or a tub in the lower frame of the door, thereby collecting the drainage and preventing water leakage to the dressing room (for example, Patent Document 1). reference.). However, this method has many connection points and is a part related to waterproof performance, so it needs to be carefully constructed and it takes time to assemble, and it is regularly cleaned to prevent clogging of drain pipes and dredging. There is a problem such as need.

There is also a method of forming a narrow opening in the water return dike at the lower end of the apron of the bathtub so that the washing area and the bathtub installation section communicate with each other, and discharging the water overflowing the washing area to the bathtub installation section via this. It has been proposed (see, for example, Patent Documents 2 and 3). In this method, the opening is exposed to the washing area, which is not preferable in terms of design. In addition, even when the opening is used in a normal washing area, there is a problem that shower water or the like directly enters the bathtub installation section from the opening. That is, there is a problem that miscellaneous wastewater mixed with soap at the washing place flows into the bathtub installation section and accumulates scales and the like, causing a strange odor and mold. In this case, attention is paid to measures against overflowing water in a bathtub, which hardly occurs in normal use, and the problems that occur in normal use are neglected. Therefore, recently, it is desired not to stain the waterproof pan on the bathtub side.
Japanese Patent Laid-Open No. 11-256949 JP 2000-54451 A (paragraph [0015], FIG. 4) JP 2000-291094 A (FIG. 1) JP 2001-241077 A (paragraph [0025])

  The present invention has been made in consideration of the above-described circumstances, and prevents drainage from entering a dressing room that is not stepped from the washing area even when a large amount of drainage is temporarily generated at the washing area. It aims at providing the bathroom drainage structure which can be performed.

  Another object of the present invention is to provide a bathroom drainage structure that can prevent drainage from entering the bathtub installation section during normal use.

  In order to solve the above-described problems, the bathroom drainage structure according to the present invention includes, as described in claim 1, a waterproof floor provided with a washing area, a bathtub installation area, and a bank section that divides them, and these washing areas. In the drainage structure of a bathroom unit having a drainage pit section that communicates the section and the bathtub installation section, the bank section is juxtaposed to the bank installation section side of the bank section, and a drainage groove is formed between the bank section and the bank section It is equipped with a back bank.

  Next, in order to solve the above-described problem, the drainage groove according to claim 2 includes a drainage hole for draining the inflowing water to the drainage pit portion.

  And in order to solve the subject mentioned above, the bathroom drainage structure which concerns on Claim 3 has the water flow path which connects a washing place part and a bathtub installation part to the said drain pit part directly above the bank part, and this water flow path The water that flows from the washing section to the bathtub installation section through the water is held until a certain amount, and the water exceeding the certain amount is provided with a water storage means that discharges the water into the drainage groove.

  In order to solve the above-described problem, the water storage means according to claim 4 is a flat, generally box-like shape in which an opening is formed on one surface facing the drain pit portion.

  Furthermore, in order to solve the above-described problem, the bathroom drainage structure according to claim 5 includes a waterproof floor provided with a washing area, a bathtub installation section, and a bank section that divides them, and these washing area and bathtub installation section. In the drainage structure of a bathroom unit having a drainage pit portion that communicates with each other, it is inserted between the lower end of the apron that covers the side of the bathtub and the upper end of the bank portion, and is sandwiched between the apron and the bank portion in a watertight manner It is equipped with a watertight material.

  According to the bathroom drainage structure according to the present invention, even when a large amount of drainage is temporarily generated at the washing place, it is possible to prevent the drainage from entering the dressing room without a step difference from the washing place.

  The present invention provides an effect of preventing drainage from entering the bathtub installation portion during normal use.

  An embodiment of a bathroom drainage structure according to the present invention will be described with reference to the drawings. FIG. 1 shows an overall outline of a bathroom unit having a bathroom drainage structure according to the present invention.

  As shown in FIG. 1, the bathroom unit 1 is installed adjacent to the dressing room D to form a bathroom, and includes a waterproof pan 2, a bathtub 3, a wall panel 4, a door 5, and a drainage pit. Part 6. A ceiling panel (not shown) is attached on the wall panel 4.

  The door 5 forms an entrance / exit part of the bathroom, and is installed on the side of the waterproof pan 2 facing the dressing room D. The door 5 includes two vertical frames 50 and 50 that form openings in the wall panel 4 and an upper frame (not shown), a lower frame 51 that connects the floor of the dressing room D and the waterproof pan 2, and a bathroom unit side. It is composed of a door body 52 that can be opened and closed.

As shown in FIG. 2, fins 53a and 53b made of rubber or soft synthetic resin are attached to the bathroom unit 1 side and the undressing room D side of the foot of the door body 52, respectively. The fins 53a and 53b are formed longer than the distances h ₁ and h ₂ from the door main body 52 to the lower frame 51 immediately below, respectively. As a result, when the door main body 52 is closed, the fins 53a and 53b are in close contact with the lower frame 51. And the like prevent the door body 52 from leaking into the dressing room D through the gap between the feet.

  A slope is provided on the upper surface of the portion 51 a installed on the waterproof pan 2 of the lower frame 51. On the other hand, the front portion 2a of the portion connected to the door 5 of the waterproof pan 2 has a gradient that is smaller than the gradient provided in the gradient portion 51a of the lower frame 51 but larger than the water gradient of the normal portion of the waterproof pan 2. Is provided. That is, the slope of the floor portion in front of the door 5 changes twice. Thereby, for example, compared with the case of only a straight gradient as shown by the broken line in FIG. 2, the drainage holding capacity of the waterproof pan 2 is remarkably improved, and the bather is not sowed. A level difference between the upper surface of the waterproof pan 2 and the upper surface of the lower frame 51 can be minimized.

  A packing 54 is sandwiched between the upper surface of the waterproof pan 2 and the lower surface of the lower frame 51, and the drain 54 is drained into a portion where the end of the lower frame 51 and the end of the waterproof pan 2 abut. A sealing material 55 such as silicon is injected so as not to go around. As a result, the height of the lower frame 51 can be finely adjusted, so that a step can be smoothly changed without causing a step in a joint portion between the lower frame 51 and the waterproof pan 2.

  FIG. 3 shows a modification of the door 5. In the door 5A according to this modified example, the slope portion 51a of the lower frame 51 is extended to the dressing room D side of the door body 52 and is long, so even if the waterproof pan 2 is not provided with the portion 2a having a large slope, In other words, the drainage capacity of the waterproof pan 2 can be improved without changing the gradient over 2 degrees. Moreover, in this modification, the cross-sectional shape of the lower frame 51 is simplified, and as a result, the unevenness of the lower frame 51 is reduced, and the effect of facilitating cleaning can be obtained.

  The waterproof pan 2 is integrally formed of a resin material, and as shown in FIG. 1, a bathtub installation in which a washing place 20 where a person can wash the body is formed on the door 5 side and the bathtub 3 is installed on the other side. A portion 21 is formed, and these are partitioned by a bank portion 22 that rises upward.

  The washing section 20 is formed so that the outer peripheral upper edge is formed at the same height, and the floor surface where the drainage flows is inclined so as to descend in a mortar shape toward the drainage pit section 6 provided in the middle part in the longitudinal direction of the bathtub 3. It becomes the flowing water surface S1.

  The bathtub installation part 21 is formed one step lower than the washing place part 20, and has a flowing water surface S <b> 2 that is inclined so that the floor surface through which the drainage flows flows in a mortar shape toward the drain pit part 6.

  Further, as shown in FIG. 4, a back bank portion 23, which is one feature of the present invention, is erected in parallel with the bank portion 22 on the side of the bathtub installation portion 21 of the bank portion 22. A drainage groove 24 is formed between the bank portion 23 and a water drainage channel 24 that collects and drains water when it overflows from the washing place 20.

  As shown in FIG. 5, a drainage pit portion 6 is provided at the intermediate portion in the longitudinal direction of the bathtub 3 so as to straddle the bank portion 22. And in order to prevent water leaking out of the bathroom unit 1 in an emergency such as overflowing water in a full tub, the drainage on the washing place 20 side at the high position should be drained to the tub installation section 21 side on the low position. The bank portion 22 on the drain pit portion 6 is cut out to form a notch portion 22a.

  On the other hand, the back bank portion 23 is integrated with the protruding portion 40d on the flange surface 40a of the drainage elbow 40 constituting the drainage pit portion 6 and continues from one end to the other end of the waterproof pan 2, and drains to the bank portion 22 side. When the groove 24 is formed and the amount of overflowing water from the washing place 20 is small, the drainage does not turn around the bathtub installation part 21 as a whole.

  As shown in FIG. 6, the bathtub 3 is installed on the bathtub installation section 21 of the waterproof pan 2 via a lower leg (not shown). As shown in FIG. 9, the bathtub 3 includes a concave bathtub body 30, a drainage fitting 31 attached to the drainage hole 30 a of the bathtub body 30, a plug (not shown) for closing the drainage fitting 31, and the bathtub 3. And an apron 10 that covers the side of the. The drainage hole 30 a is formed in the lower part of the bathtub body 30 in the longitudinal direction near the washing place 20, that is, in the vicinity of the drainage pit part 6. In addition, water supply / hot water supply facilities (not shown) are attached to the bathtub 3 and the washing place 20.

  An apron 10 that covers the side of the bathtub 3 is attached to the washing area 20 side of the bathtub 3 above the bank portion 22 of the waterproof pan 2. The upper end of the apron 10 is detachably fixed below the rim surface of the upper end of the bathtub main body 30, and the lower end hangs down from there to the bank portion 22. On the lower end surface of the apron 10, as shown in FIG. 7, a convex portion 10a and a concave portion 10b are formed over the entire length along the longitudinal direction.

  On the other hand, as shown in FIG. 7, a convex portion 22b and a concave portion 22c are also formed on the upper end surface of the bank portion 22 along the longitudinal direction. On the bank portion 22, the watertight material 11 constituting one of the features of the present invention is placed over the entire length of the bank portion 22. The watertight material 11 is a plate-like gasket made of rubber or soft synthetic resin, and a convex portion 11a and a concave portion 11b are formed on the upper surface and the lower surface along the longitudinal direction. The convex portion 11a and the concave portion 11b formed on the lower surface are formed so as to be engaged with the concave portion 22c and the convex portion 22b of the bank portion 22, respectively, and the convex portion 11a and the concave portion 11b formed on the upper surface are respectively apron. It is shape | molded so that it may mesh with the 10 recessed part 10b and the convex part 10a.

  Thus, since the watertight material 11 is pressed and pinched between the apron 10 and the bank portion 22, for example, even when bath water overflows, from between the apron 10 and the bank portion 22 to the bathtub installation portion 21. And will not flow in. Further, the water discharged from the shower and the water discharged from the shower and bounced off from the floor of the washing place 20 do not flow into the bathtub installation portion 21 from between the apron 10 and the bank portion 22.

  Here, as shown in FIG. 5, immediately above the drain pit portion 6 is a notch portion 22 a of the bank portion 22, and the first partition member 12 is attached instead of the bank portion 22. As shown in FIG. 8, the first partition member 12 is a plate-like member having a substantially T-shaped front surface, and short arm-like portions 12b and 12b protrude from the main body upper portion 12a to the left and right. Further, the upper surface of the first partition member 12 is formed with convex portions 12c and concave portions 12d similar to those provided on the upper surface of the bank portion 22, and the convex portions 12c and concave portions 12d are also formed on the lower surface of the arm portion 12b. Has been.

  On the other hand, on the side of the wash basin 20 at both ends facing the notch portion 22a of the bank portion 22, a hooking portion 22b is formed in a shape that meshes with the irregularities on the lower surfaces of the arm portions 12b, 12b of the first partition member 12. ing. When the apron 10 is attached after the arm portion 12b of the first partition member 12 is placed on the hooking portion 22b and the watertight material 11 is laid on the arm portion 12b, the apron as in the bank portion 22 is mounted. It can prevent that the waste_water | drain of the washing-room part 20 flows out into the bathtub installation part 21 from between 10 and the 1st partition material 12. FIG. However, as shown in FIG. 9, the lower end of the first partition member 12 does not reach the drain pit portion 6 and is provided with a gap of about 10 mm to form a water passage 14.

  The drainage pit section 6 discharges the drainage on the waterproof pan 2 and the drainage in the bathtub 3 to the outside of the bathroom in a state in which the backflow of odor is prevented. It is attached to protrude downward from 2. The drainage pit part 6 is roughly divided into a drainage elbow 40 that takes charge of drainage of the bathtub installation part 21 and a drainage trap 60 that takes charge of drainage of the washing area 20.

  As shown in FIG. 9, the flange surface 40 a of the drainage elbow 40 is fitted into the drainage elbow mounting opening 25 formed in the waterproof pan 2 so as to be substantially flush with the upper surface of the waterproof pan 2. Along with the upper surface of the waterproof pan 2, a flowing water surface S2 that slopes downwardly toward the central portion of the back bank portion 23, that is, the portion located on the back side of the notch portion 22a of the bank portion 22 is formed. In this case, the bathtub drain hole 40 b of the flange surface 40 a of the drain elbow 40 is positioned at a position facing the drain hole 30 a of the bathtub 3. On the other hand, the end of the drainage elbow 40 opposite to the flange surface 40a is connected to a sealed water inlet 62b on the side of the drainage trap 60 main body.

  The flange surface 40a is formed with a bathtub drain hole 40b for inserting the drain fitting 31 of the bathtub 3, a floor drain hole 40c for draining water accumulated in the bathtub installation portion 21, and an upward rising. A protruding portion 40d and a drain groove drain hole 40e for draining water accumulated in the drain groove 24 are provided.

  Since the drainage fitting 31 of the bathtub 3 is inserted into the bathtub drainage hole 40b, the bathtub drainage is guided to the drainage trap 60 main body via the drainage elbow 40 and drained. Moreover, the overflow water etc. of the bathtub 3 which flowed into the bathtub installation part 21 are guide | induced to the drain trap 60 main body similarly to bathtub drainage from the floor drain hole 40c of the drain elbow 40, and are drained. The floor drain hole 40c is equipped with a check valve 40f in order to prevent the water in the bathtub from overflowing into the bathtub installation portion 21 due to the water pressure during bathtub drainage.

  The protruding portion 40 d is formed in the same shape as the back bank portion 23 provided in the bathtub installation portion 21, and is disposed at a position that is in line with the back bank portion 23, and constitutes a part of the back bank portion 23. Since the connection portion with the back bank portion 23 is watertightly connected by packing or the like, the water accumulated in the back bank portion 23 does not leak from the connection portion to the bathtub installation portion 21. The water accumulated in the drainage groove 24 formed between the bank portion 22 and the back bank portion 23 is led from the drainage groove drainage hole 40e to the drainage trap 60 main body through the drainage elbow 40 and drained. The drain groove drain hole 40e is also equipped with a check valve 40g in order to prevent the water in the bathtub from overflowing into the drain groove 24 due to the water pressure during bathtub drainage.

  As described above, the drainage of the bathtub installation unit 21, regardless of whether it is from the bathtub 3, the floor surface of the bathtub installation unit 21, or the drainage groove 24, is once all drained from the washing section 20 via the drainage elbow 40. It is discharged to the trap 60.

  As shown in FIG. 9, the drain trap 60 is attached to the bottom surface of the drain recess 26 provided at the lowest position of the washing place 20, and includes a trap body 62, a sealing pipe 63, and an eye plate 64. Has been.

  A drainage elbow 40 that collects drainage from the bathtub installation portion 21 is connected to the trap body 62 so that a sealed water reservoir 62a having a predetermined height is formed at the center on the lower side and communicated with the lower part of the sealed water reservoir 62a. A sealed water reservoir inlet 62b is formed. Further, the trap body 62 is formed with a drain outflow portion 62c so as to communicate with the upper side of the sealed water reservoir 62a, and a drain pipe 65 is connected thereto.

  Here, the drain trap 60 is positioned so that the sealed surface M located at the upper end E of the sealed water reservoir 62a is positioned lower than the lower surface of the flange 40a of the drain elbow 40.

  As shown in FIGS. 8 and 9, a second partition member 13 constituting the lower surface of the water passage 14 is installed above the drain pit portion 6 and below the first partition member 12. The second partition member 13 is formed in a substantially box shape in which an opening is provided on the surface on the side facing the first partition member 12.

  The vertical cross section has a substantially U-shape in which the lower plate 13a is longer than the upper plate 13b. One end of the lower plate 13a is placed on the horizontal surface above the notch sealing member 28 so as to be at the same level as the upper surface of the drain pit portion 6, and the other end projects toward the drain groove 24 side. A packing made of rubber, soft synthetic resin or the like is bonded to a portion where the lower plate 13a contacts the notch sealing material 28, and water is prevented from leaking directly into the drainage groove 24 from this portion.

  As shown in FIG. 9, the upper plate 13 b of the second partition member 13 has a shape extending from the back plate 13 c erected from the lower plate 13 a to the back side of the first partition member 12. It does not reach the material 12, and a certain distance is maintained between the back surface of the first partition material 12. Thereby, the waste water from the washing place 20 is discharged to the drain groove 24 through this gap. The side plate 13d of the second partition member 13 is formed in a substantially trapezoidal shape, and connects the lower plate 13a and the upper plate 13b. As shown in FIG. Leakage directly from the side into the drainage groove 24 is prevented. In addition, these 1st partition materials 12 and 2nd partition materials 13 in this embodiment also comprise the characteristics of this invention, and the 2nd finishing material 13 comprises the "water storage means" of this invention.

  A trap cover 27 is installed on the drain recess 26 so as to cover it. The trap cover 27 includes a flat rectangular upper surface 27 a and leg portions 27 b provided on four sides for supporting the upper surface 27 a on the drain pit portion 6. Since the vertical and horizontal sizes of the trap cover 27a are formed smaller than the vertical and horizontal sizes of the drain recess 26, a gap is provided between the four circumferences of the trap cover 27 and the drain recess 26 as shown in FIG. The drainage from the washing area flows down from this gap to the drainage pit section 6. In addition, the upper surface of the trap cover 27 is the same height as the nearby floor level, so that it is possible to prevent people from catching their feet and seeing the dust accumulated in the eye plate.

  Next, the flow of drainage in the bathroom unit 1 will be described with reference to the drawings. The drainage of the water stored in the bathtub body 30 is poured from the drainage fitting 31 through the drainage elbow 40 into the sealed water reservoir 62 a of the drainage trap 60 by removing the plug from the drainage fitting 31. In this case, the drainage elbow 40 is filled with drainage, but the check valve 40f and the check valve 40g block the floor drainage hole 40c and the drainage drainage hole 40e, respectively. Will not be leaked.

  FIG. 10 shows the flow of drainage generated in the washing area 20 during normal use, that is, when taking a shower or washing hair or body. The wastewater generated in the washing area 20 is collected in the drainage recess 26 having the lowest level in the washing area 20 through the flowing water surface S1 of the waterproof pan 2 or along the apron 10 or the like. At this time, since the watertight member 11 is inserted between the lower part of the apron 10 and the bank portion 22 or the first partition member 12, the drainage leaks from the place higher than the drainage recess 26 to the bathtub installation portion 21. There is nothing.

  Then, the waste water that has passed through the drain recess 26 passes through the eye plate 64 of the drain trap 60 and the sealing pipe 63 and is stored in the sealing water reservoir 62a of the trap body 62, and then overflows from the upper end E side of the sealing water reservoir 62a. By doing so, the water is discharged out of the bathroom through the drainage pipe 65 from the sealed water outlet 62c. In this case, the position of the sealing surface M of the drain trap 60 rises due to the overflow, but the check valves 40f and 40g block the floor drain hole 40c and the drain groove drain hole 40e of the bathtub installation part 21, and therefore the drainage in the sealed water reservoir 62a. Does not flow out to the bathtub installation portion 21 side of the waterproof pan 2.

  Further, part of the water that has flowed down between the first partition member 12 and the trap cover 27 may flow toward the second partition member 13. However, since the second partition member 13 is enclosed in a box shape by the left and right side plates 13d, 13d, the back plate 13c and the upper plate 13b, it plays the role of water return, for example, as shown by the water level F in FIG. A normal water flow / water volume does not leak into the bathtub installation section 21.

  In this way, during normal use, the drainage does not overflow into the bathtub installation part 21, so that there is no problem of accumulation of scales and the like, which causes a strange odor and mold.

  However, for example, when the hair or the like is piled up on the eye plate 64 and the flow of the drain trap 10 becomes worse, the drainage flows toward the second partition member 13 and the water level in the second partition member 13 It may gradually rise and reach the upper plate 13b. In this case, the water overflowing from the second partition member 13 flows out into the drainage groove 24 below the second partition material 13 and is stored for a while, for example, as shown by a water level G in FIG. Then, it is discharged to the drain elbow 40 through the drain groove drain hole 40e.

  Accordingly, the amount of drainage per unit time when using a normal shower or the like, even if the eye plate 64 is clogged, the drainage overflowing into the drainage groove 24 does not further overflow into the bathtub installation portion 21. . Moreover, in this embodiment, the first partition member 12 and the second partition member 13 are formed so as to be removable so that the inside of the apron 10 can be seen, and thus the drainage channel overflows in this way. Even if it comes out, it is only necessary to look at the vicinity of the bank portion 22 of the bathtub installation portion 21, and it is possible to easily inspect and clean by removing these.

  In particular, if the drainage overflows to reach the wall panel 4 on the opposite side of the bank portion 22 of the bathtub installation section 21, the apron 10 is removed and the bathtub body 30 is moved for inspection and cleaning. Or the operation | work of lifting etc. is needed, but according to the bathroom drainage structure which concerns on this embodiment, such an operation | work is not required unless emergency situations, such as overflow of a bathtub, generate | occur | produce.

  On the other hand, the flow of drainage when a large amount of drainage is suddenly generated from the bathtub body 30 side to the washing area 20 side of the waterproof pan 2 as in the case of bathing in the bathtub body 30 that is almost full. 11 will be described.

  In this case, since the drainage concentrates in the drainage recess 26 of the washing place 20 beyond the drainage capacity of the drainage trap 60, the drainage also flows toward the second partition member 13 and exceeds the upper plate 13b (water level H ) It flows down to the drainage groove 24. However, since the drainage trap 60 exceeds its processing capacity, the drainage elbow 40 is also filled with water, so the check valve 40g is closed, and the water level in the drainage groove 24 increases rapidly. It overflows to the bathtub installation part 21 (water level K) over the upper end of the back bank part 23 (water level J).

  When there is a lot of overflowing water from the bathtub 3, the water level further rises, becomes higher than the lowest level L1 of the washing place 20, and water may overflow into the washing place 20 (water level N). When this water level becomes higher than the highest level L4 of the washing area 20, water overflows into the dressing room D.

  In order to prevent this, it is necessary to make the sum of the drainage holding capacity of the bathtub installation part 21 and the drainage holding capacity of the washing place part 20 larger than the assumed amount of overflow water. According to the present embodiment, the drainage capacity of the washing place 20 is enhanced by changing the slope at the foot of the door 5 twice, and the drainage is also retained in the bathroom installation part 21 where water does not normally rotate in an emergency. Since it is comprised so that it can do, sufficient drainage retention capability can be ensured, and it can prevent that the bathtub overflow water flows out outside without providing a standup at the doorstep.

  The waste water staying in the drain trap 60 is finally discharged from the water distribution pipe 65, and the water level on the sealed water reservoir 62a side in the drain trap 60 becomes lower than the water level of the bathtub installation portion 21, and at that time, the floor The check valves 40f and 40g of the drain hole 40c and the drain groove drain hole 40e are opened, and the waste water flowing into the bathtub installation portion 21 side of the waterproof pan 2 is discharged to the drain trap 60 side.

  In addition, although this embodiment demonstrated the case where the 1st partition material 12 was formed so that removal was possible, this may be shape | molded integrally with the apron 10. FIG. Even in this case, if the apron 10 is removed, it is possible to inspect the inside of the bathtub installation portion 21 from the cutout portion 22a of the bank portion 22.

  Moreover, although the case where the 2nd partition material 13 was formed so that removal was possible was demonstrated in this embodiment, this may be shape | molded integrally with the waterproof pan 2. FIG. Or it is also possible to shape | mold the 1st partition material 12 and the 2nd partition material 13 integrally.

  As described above, in the drainage structure of the bathroom unit 1, since the watertight material 11 is provided between the apron 10 and the bank portion 22, for example, bath water overflows or water from the shower directly hits the apron. However, it does not flow from the upper part to the bathtub installation part 21 from the floor level.

  And since the water flow path was formed with the 1st partition material 12, and it was made to hold | maintain the water led by the 2nd partition material 13 while guiding the waste_water | drain generate | occur | produced in the washing place 20 from this water flow path to the bathtub installation part 21. For example, even if the eye plate 64 is clogged, the drainage does not normally overflow to the floor surface of the washing place 20, and a clean feeling can be maintained, and the drainage does not flow out to the bathtub installation part 21. Occurrence can be suppressed.

  In addition, since the drainage groove 24 is provided on the bathtub installation part 21 side behind the bank part 22, even if water overflows from the second partition member 13, it can be treated in the drainage groove 24 as long as it is not in large quantities. The inspection / cleaning of the bathtub installation part 21 is facilitated.

  Furthermore, when the first partition material 12 and the second partition material 13 cause an emergency such as a tub overflow water, the overflow water can be discharged to the tub installation portion 21 side. It is possible to prevent leakage to the outside.

  In addition, since the slope of the foot of the door 5 is changed in two stages, the drainage holding capacity of the washing area 20 is increased, and the overflow of the bathtub overflow can be further reliably prevented.

  That is, according to the bathroom drainage structure according to the present embodiment, even in a barrier-free bathroom unit that does not have a rising at the bathtub entrance, the drainage does not enter the bathtub installation part during normal use. The bathroom can be used hygienically, and the back of the apron 10 can be easily inspected and cleaned. Even for overflowing tub water that is unlikely to occur in reality, there is no significant cost to the dressing room D side. It is possible to prevent the leakage.

  The embodiments described above are for illustrative purposes and do not limit the scope of the invention. Accordingly, those skilled in the art can employ embodiments in which each or all of these elements are replaced by equivalents thereof, and these embodiments are also included in the scope of the present invention.

The perspective view which shows the whole outline of a unit bath provided with the bathroom drainage structure which concerns on this invention. FIG. 2 is a cross-sectional view around the feet of the door shown in FIG. 1. Sectional drawing which shows the modification of the foot periphery of the door shown in FIG. It is an AA arrow line view of FIG. 1, Comprising: The longitudinal cross-sectional view of a bank part. The perspective view which looked at the notch part of a bank part from the bathtub side upper side. Exploded view around the bathtub. It is a figure which shows the relationship between watertight materials, Comprising: (a) is on a bank part, (b) is a longitudinal cross-sectional view on a 1st partition material. The perspective view which shows the attachment detail of the water return material 1. FIG. It is a BB arrow line view of FIG. 1, Comprising: It is a longitudinal cross-sectional view around a drain pit part. The figure explaining the flow of the waste_water | drain at the time of shower watering. The figure explaining the flow of the waste_water | drain at the time of bathtub overflow.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom unit 2 Waterproof pan 3 Bathtub 4 Wall panel 5, 5A Door 6 Drain pit part 10 Apron, 10a Convex part, 10b Concave part 11 Watertight material, 11a Convex part, 11b Concave part 12 1st partition material, 12a Main body, 12b Arm part 13 Second partition material, 13a Lower plate, 13b Upper plate, 13c Back plate, 13d Side plate 14 Water passage 20 Washing station portion 21 Bathtub installation portion 22 Bank portion, 22a Notch portion, 22b Hook portion, 22c Protruding portion, 22d Recessed portion 23 Back bank 24 Drainage groove 25 Drainage elbow mounting opening 26 Drainage recess 27 Trap cover, 27a Top surface, 27b Leg 28 Notch sealant 30 Bath body, 30a Drain hole 31 Drainage fitting 40 Drainage elbow, 40a Flange, 40b Bathtub Drain hole, 40c Floor drain hole, 40d Projection, 40e Drain drain hole, 40f, 40g Check valve 50 Vertical frame 51 Lower frame 52 A body 53 fin 54 packing 55 sealing material 60 drain trap 62 trap body, 62a sealed water reservoir, 62b sealed water inlet, 62c sealed water outlet 63 sealed water pipe 64 eye plate 65 drain pipe D dressing room

Claims (5)

In the drainage structure of a bathroom unit comprising a waterproof floor provided with a washing area, a bathtub installation section, and a bank section that divides them, and a drainage pit section that communicates these washing area and bathtub installation section, A bathroom drainage structure comprising a back bank part juxtaposed with the bank part on the bathtub installation part side and forming a drainage groove between the bank part and the bank part. The bathroom drainage structure according to claim 1, wherein the drainage groove includes a drainage hole for draining the inflowing water to the drainage pit portion. Up to a portion of the bank directly above the drainage pit part, a water passage communicating the washing place and the bathtub installation part, and a certain amount of water flowing from the washing place to the bathtub installation part via the water passage The bathroom drainage structure according to claim 1, further comprising a storage means for holding and discharging water exceeding the predetermined amount to the drainage groove. The bathroom drainage structure according to claim 1, wherein the water storage means has a flat, substantially box shape with an opening formed on one surface thereof facing the drainage pit portion. In the drainage structure of a bathroom unit comprising a waterproof floor provided with a washing area, a bathtub installation section, and a bank section that divides them, and a drainage pit section that connects the washing area and the bathtub installation section, the side of the bathtub A bathroom drainage structure comprising a watertight material inserted between a lower end of an apron covering the side and an upper end of the bank portion and tightly sandwiched between the apron and the bank portion.

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