JP3262105B2 - Bathroom unit drainage structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom unit in which a bath tub installation side is made one step lower than a washing floor side of a waterproof floor pan, and a part of drainage from the washing basin side is discharged to the bath tub installation side. Related to the drainage structure.

[0002]

2. Description of the Related Art Many waterproof floor pans of a bathroom unit are provided with a bathtub installation section in which a bathtub is installed next to a washing section that forms a washing area, at a level lower than the washing area. In such a bathroom unit, since the upper end side of the bathtub can be lowered by the amount of the bathtub installation part dropped below the washing area, the height of the step between the upper surface of the washing area and the upper end of the bathtub to the bathtub is reduced. can do.

FIG. 7 shows, for example, Japanese Patent Application Laid-Open No. 8-270034.
FIG. 1 shows details of such a bathroom unit around a drain trap. In the figure, a bathtub installation section 503 that is one step lower than the washbasin section 501 is formed on one side of a washbasin section 501 of the waterproof floor pan 500 with a bank section 502 rising upward as a boundary. A bathtub 510 is provided on 503. At the lower side of the bathtub 510, a drain pipe 510a penetrating the bathtub installation section 503 is attached, and a waterproof floor pan 500 is provided.
On the back side of the connection pipe 52 connected to the drain pipe 510a.
0 is connected to a drain trap 530 attached to the lower surface side of the waterproof floor pan 500 on the washing section 501 side.

In this bathroom unit, a waterproof floor pan 500 is provided.
The drainage from the washing section 501 side flows into the drain trap 530 through the concave opening 501a. Also, when a large amount of drainage is generated on the washing area 501 side due to overflow water from the bathtub 510, a part of the drainage is
After flowing through the notch 502a of the second part and toward the bathtub installation part 503 side, it flows into the drain trap 530 through the notch 502a. The drainage from the bathtub 510 also flows into the drain trap 530 through the drain pipe 510a and the connection pipe 520.

[0005]

However, in the above-described bathroom unit, even if the amount of drainage retained on the washing section 501 side of the waterproof floor pan 500 is reduced, the washing section 5 can be used.
There is a merit that the wastewater on the 01 side can be drained without overflowing to the outside of the bathroom. However, from the upper end side of the wastewater trap 530, the washing area 501 is inserted into the wastewater trap 530.
Not only the drainage on the side but also the drainage on the bathtub installation part 503 side, the drain trap 530 must be provided below the lowest position of the water flow surface S of the waterproof floor pan 500 where the drainage flows. was there.

For this reason, the drain trap 530 protrudes greatly below the waterproof floor pan 500, and accordingly,
Since the waterproof floor pan 500 has to be lifted upward from the installation surface F of the bathroom unit, for example, in the case of a middle-to-high-rise apartment house, a large step occurs between the upper surface of the bathroom entrance and the upper surface of the dressing room. In addition, there is a problem in getting in and out of the bathroom.

SUMMARY OF THE INVENTION In view of the above, the present invention is configured such that the bath tub installation side is made one step lower than the washing floor side of the waterproof floor pan, and a part of the drainage from the washing floor side is discharged to the bath tub installation side. Another object of the present invention is to provide a drain structure of a bathroom unit in which a drain trap can be provided at a relatively high position on a waterproof floor pan.

[0008]

According to the first aspect of the present invention, there is provided a waterproof floor pan provided with a bathtub installation section for installing a bathtub next to a washing area forming a washing area. A drainage trap into which the drainage from the bathroom is poured, and a drainage structure of a bathroom unit into which a part of the drainage from the washing part is poured into a bathtub installation part provided at a position lower than the washing part. , A first drain hole for collecting and discharging the drainage on the bathtub installation part side is formed at the lowest position of the flowing water surface where the drainage water on the bathtub installation part side flows, and the drainage water in the bathtub is formed at a predetermined position on the flowing water surface. A second drain hole for discharging the waste water through a bathtub drainage channel with no gap is formed, and the upper end of the water trap of the drain trap into which the drainage on the washing area side is poured is positioned at the position of the first drain hole on the flush surface.
Do not exceed, in the same vertical position as the position of this first drain hole
Positioning, further connecting the first drainage hole and the bathtub drainage channel to the closed reservoir of the drainage trap by the first and second floor pan drainage channels, and further in the first drainage hole or the first drainage hole. A drain valve on the side of the bathtub installation section is passed through the first floor pan drainage channel leading to, but a check valve for preventing backflow of the drainage to the bathtub installation section side is provided.

[0009] In the present invention, the waste water of the washing place side is, drainage
While being drained into the trap , the drainage from the bathtub installation section is directly drained from the first drain hole through the check valve and the first floor pan drainage channel into the sealed reservoir of the drain trap.
In addition, the drainage in the bathtub does not flow out to the bathtub installation portion side, but flows directly into the sealed reservoir of the drain trap through the bathtub drainage channel and the second floor pan drainage channel. Furthermore, when a large amount of drainage (for example, overflow water from the bathtub) is suddenly generated on the washing area side, the drainage on the washing area side is prevented from accumulating in the washing area side and flowing out of the bathroom. A part of the water is poured into the bathtub installation section, and the wastewater collected in the bathtub installation section is poured into the drain trap through the first drain hole.

By the action of the check valve, the drainage water on the drain trap side does not flow back to the bathtub installation part side through the first drainage hole, and the drainage passage having no gap allows the drainage in the bathtub. Since the wastewater does not flow out to the bathtub installation part side, no odor due to the wastewater is generated from the bathtub installation part side.

Therefore, according to the present invention, it is not necessary to form the washing floor portion side of the waterproof floor pan deeply to accumulate drainage, and the upper end of the bathtub can be made closer to the upper surface side of the washing floor portion. Also, in the present invention, the drain trap
The upper end of the sealed reservoir exceeds the position of the first drain hole on the bathtub installation part side
No, located at the same vertical position as the position of this first drain hole
By deciding, this drain trap is
Since it is positioned as high as possible , the amount of protrusion of this drain trap below the waterproof floor pan should be kept small.
Can be.

The bathtub drainage channel may be formed so as to include the second drainage hole, or the bathtub drainage channel may be inserted into the second drainage hole.

According to a second aspect of the present invention, in the case of the first aspect, the drain portion of the bathtub and the second drain hole are provided at positions facing each other.

According to the present invention, a bathtub drainage channel having no gap from the drainage portion of the bathtub to the second drainage hole without providing a large piping gap between the upper surface of the bathtub installation portion of the waterproof floor pan and the lower surface of the bathtub. Can be provided. Therefore, this bathtub can be installed on the bathtub installation portion of the waterproof floor pan with the lower surface side of the bathtub as close as possible to the waterproof floor pan side.

According to a third aspect of the present invention, in the case of the first aspect, the drain trap under the first floor pan and the second drain pan under the floor are united with the drain trap. It is connected to the water reservoir.

In the present invention, since the two drain pans below the floor pan are integrated, the structure on the lower side of the waterproof floor pan can be simplified.

According to a fourth aspect of the present invention, in the case of the first aspect, the check valve is opened and closed by swinging the other end of the valve body around one end. It is something.

In the present invention, since a guide or the like is not required to move the valve element, the valve element moves poorly (sticking) due to a slash or the like as compared with a type in which the valve element moves up and down along the guide to open and close. ) Does not occur, and the check valve opens and closes quickly and smoothly.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a drainage structure of a bathroom unit according to one embodiment of the present invention.

The bathroom unit 1 is installed on an installation surface F of a bathroom installation space adjacent to a dressing room D to form a bathroom. As shown in FIG. 1, a waterproof floor pan 2 and a bathtub 3 are provided. , Wall panel 4, door frame 5, water collecting plate 6, cylindrical packing 7, drainage unit 8, check valve 9, drainage trap 10, bank cover 11, groove cover 12, grating 13, an apron 14, and a water supply / hot water supply facility (not shown).

The waterproof floor pan 2 is integrally formed of a resin material. As shown in FIG. 4, a washing section 20 forming a washing area A is formed on one side, and a bathtub 3 is installed on the other side. A bathtub installation portion 21 is formed, and these are separated by a bank portion 22 which is raised upward. On the outer peripheral portion of the waterproof floor pan 2, a wall mounting portion 23 on which the wall panel 4 and the door frame 5 are installed is formed.

As shown in FIG. 4, the washing section 20 has a first U-shape on the outer periphery along the wall placing section 23.
The drainage groove 20a is formed, and a wide second drainage groove 20b communicating with the first drainage groove 20a is formed in an outer peripheral portion along the bank portion 22, and these first and second drainage grooves are formed. The grooves 20a and 20b are covered with a groove cover 12 and a grating 13 as shown in FIG.
A portion surrounded by the first and second drain grooves 20a and 20b of the washing part 20 (hereinafter, this part is referred to as a land part 20c).
The upper edge of the outer periphery along the first drain groove 20a is formed at the same height, and the upper surface through which the drain water flows is the second drain groove 20b.
The water flow surface S1 is inclined so as to descend like a slash toward the drainage concave portion 200 provided at the middle portion in the longitudinal direction. The drain recess 200 is for collecting waste water from the washing section 20 side and discharging it to the drain trap 10 side, and has an opening 200a formed at the lower end of the recess.

As shown in FIG. 1, the groove cover 12 and the grating 13 have the upper surface positioned substantially flush with the outer periphery of the land portion 20c (flowing surface S1).
And are placed on supporting portions P1, P2, P3 formed around the second drain grooves 20a, 20b.

As shown in FIG. 4, the bank 22 has
Notches 22a and 22b for guiding the drainage from the washing section 20 to the bathtub installation section 21 at an intermediate portion of the washing section 20 facing the drain recess 200 and at both ends of the washing section 20 facing the first drain groove 20a.
Are formed.

As shown in FIG. 4, the bathtub installation section 21 is formed one step lower than the washing section section 20, and the bottom plate section 21 a at the lowest position is the cutout section 22 of the bank section 22.
a bottom plate 2 that extends to the side a and faces this notch 22a.
1a, a concave drain hole 210 is formed. As shown in FIG. 2, the drainage holes 210
The first step portion 210a into which the first step portion 210 is fitted, and the first step portion 21
0a, an opening 210c is formed at the lower end portion below
A step 210b is formed. The upper surface of the bottom plate portion 21a is inclined at a downward slope toward the drain hole 210, more precisely, toward the first drain hole 60 (described later) of the water collecting plate 6 fitted into the drain hole 210. The flowing water surface S2, the drainage on the bathtub installation part 21 is
Through the first drain hole 60 of the water collecting plate 6 and the drain hole portion 2
It can be collected in ten openings 210c.

The door frame 5 forms an entrance / exit portion of the bathroom. For example, as shown in FIG. 1, the door frame 5 is installed on the wall mounting portion 23 of the waterproof floor pan 2 facing the bathtub 3. . Of course, a door (not shown) that can be opened and closed is attached to the door frame 5. A ceiling panel is mounted on the wall panel 4, and the bathtub 3 and the washing area A
Is equipped with water supply / hot water supply equipment.

As shown in FIG. 1, the bathtub 3 is installed on the bathtub installation portion 21 of the waterproof floor pan 2 via lower legs (not shown). The bathtub 3 has a concave bathtub body 3.
0, a drain portion 31 attached to the drain hole 30a of the bathtub body 30, and a plug 32 with a hole for closing the drain portion 31. As shown in FIG. 2, the drain portion 31 includes a nozzle portion 310 and a ring packing 31.
1, a fastening flange 312, and a perforated plate 313. In addition, the drainage hole 30a is formed in the middle part in the longitudinal direction of the bathtub main body 30 at a lower part near the washing place A.

The drain portion 31 is attached around the hole 30a of the bathtub body 30 by inserting the nozzle 310 into the hole 30a until the upper edge 310a of the nozzle portion 310 hits around the hole 30a of the bathtub body 30. After that, while fitting the ring packing 311 into the lower part of the nozzle portion 310,
The internal thread 312a of the fastening flange 312 may be screwed into the external thread 310b of the nozzle 310.
As shown in FIG. 1, an apron 14 is attached above the bank portion 22 of the waterproof floor pan 2 so as to cover the side of the bathtub 3 on the washing place A side of the bathtub 3.

As shown in FIG. 2, the water collecting plate 6 is provided with a first drain hole 60 for discharging drain water from the bathtub installation section 21 side and a drain water in the bathtub 3 through a bathtub drainage channel Q having no gap. A second drain hole 61 for discharging without leaking is formed. The water collecting plate 6 is provided with a bathtub installation portion 21 in a first step portion 210 a of a drain hole portion 210 formed in the waterproof floor pan 2.
The bottom plate 21a is fitted so as to be substantially flush with the upper surface of the bottom plate 21a, and the upper surface thereof forms a flowing water surface S2 that is inclined downwardly toward the first drain hole 60 together with the upper surface of the bottom plate 21a. In this case, the second drain hole 61 of the water collecting plate 6 is positioned at a position facing the drain portion 31 of the bathtub 3.

The cylindrical packing 7, together with the second drain hole 61 of the water collecting plate 6, extends from the drain portion 31 of the bathtub 3 to the second drain hole 61.
Until then, a bathtub drainage channel Q without a gap is formed.
The cylindrical packing 7 is adhesively fixed at its upper end to the lower surface of the fastening flange 312 of the drainage portion 31 of the bathtub 3 with an adhesive, and its lower end is pressurized and fixed to the upper surface of the water collecting plate 6 by its own weight. . The area around the pressurizing surface of the cylindrical packing 7 of the water collecting plate 6 is not inclined water flow surface S2, but is formed horizontally.

The drain portion 8 discharges the drain water discharged from the first and second drain holes 60 and 61 of the water collecting plate 6 from the bathtub installation portion 21 and the bathtub 3 side to the drain trap 10 side. 1
And a second floor pan drainage channel is formed.
, The first and second drain holes 6 of the water collecting plate 6
It is attached to the lower side of the drain hole 210 so as to communicate with 0 and 61. The drain portion 8 includes a nozzle portion 80 and a U
It is composed of a packing 81 and an L-shaped pipe 82, and the U packing 8 is provided at the edge of the opening 210 c of the drain hole 210.
After inserting the nozzle part 1 into the opening 210c, the nozzle part 80 is inserted into the opening 210c with the upper end flange part 82a of the L-shaped pipe 82 abutting against the lower part of the U packing 81.
Is screwed into the inner thread 82b of the L-shaped pipe 82, and the U packing 81 is connected to the flanges 80b, 82.
By being pinched by a, it is attached to the waterproof floor pan 2.

The check valve 9 is provided in the bathtub installation section 2 of the waterproof floor pan 2.
The drainage on the first side is passed through the drainage unit 8 side, but the backflow of the drainage to the bathtub installation unit 21 side is prevented, and as shown in FIG. It is installed in a state that it can be easily attached and detached. The check valve 9 has a thin valve element 91 floating on the water on the lower surface side of the main body 90 and an opening 90 of the main body 90.
The other end of the valve element 91, which is disposed so as to close the upper end of the valve body 91 and is connected at one end to the main body portion 90 by a hinge or the like, opens and closes by swinging up and down along with the water surface up and down. It has become. This check valve 9 is provided with an upper handle 9.
2, the lower body part 90 is inserted into the position of a stopper (not shown) around the first drain hole 60 of the water collecting plate 6, and then the handle 92 is rotated, whereby the water collecting plate 6 is rotated. An engaging portion (not shown) formed around the first drain hole 60 is engaged with the main body portion 90 and attached to the water collecting plate 6.

The drain trap 10 discharges the drain water on the waterproof floor pan 2 and the drain water in the bathtub 3 to the outside of the bathroom while preventing the backflow of odor. The waterproof floor pan 2 is mounted so as to protrude downward. As shown in FIG. 3, the drain trap 10 is attached to a lower portion of a drain recess 200 of the washing section 20, and includes a trap body 100 and a cover 1.
01, the nozzle part 102, the water sealing pipe 103, and the eye plate 10
4 and U packing 105.

As shown in FIG. 3, the trap body 100 is formed with a water reservoir 100a having a predetermined height at the center on the lower side, and a drain portion 8 communicating with a lower portion of the water reservoir 100a. A water reservoir inlet portion 100b to which the L-shaped pipe 82 is connected is formed. Further, a drainage outflow portion 100c is formed in the trap body 100 so as to communicate with the upper side of the sealed water reservoir 100a. And
A cover portion 101 having a female screw portion 101a formed around a central opening is attached to the upper portion of the trap body 100.

As shown in FIG. 3, the nozzle portion 102 has a flange portion 102a on the upper end side mounted on a U packing 105 attached to an edge of the opening 200a of the drain recess 200, and a central portion thereof. A water sealing pipe 103 which is dropped into the trap body 100 through an opening of the cover part 101 and is supported around a lower opening is inserted into a water reservoir 100a of the trap body 100. Therefore, the drain trap 10 is
Male screw part 102b of cover part 101
a of the nozzle portion 102, and
And a cover 101 integrated with the trap body 100
Then, the U-packing 105 is pressurized to be attached to the waterproof floor pan 2. The plate 104 has a large number of small openings 1.
04a is formed and serves as a drainage inflow portion of this drainage trap 10. In the upper part of the nozzle part 102, the upper surface is flush with the upper surface of the flange part 102a.
It is placed.

Here, as shown in FIG. 1, since the drain recess 200 of the waterproof floor pan 2 is formed relatively shallow, the drain trap 10 attached to the lower part of the drain recess 200 is Does not protrude greatly below the bathtub installation part 21 of the first embodiment. In this case, the drain trap 10
Are positioned such that the water sealing surface M located at the upper end E of the water sealing reservoir 100a is arranged at substantially the same position as the vertical position of the first drain hole 60 of the water collecting plate 6.

The bank cover 11 covers the cutout portion 22a of the bank portion 22 of the waterproof floor pan 2, and has a substantially L-shaped cross section as shown in FIG. A large number of small openings 110 are formed in the lower side of the bank cover 11, so that the drainage from the washing area A can flow out to the bathtub installation section 21 through the openings 110a.

The groove cover 12 is, as shown in FIG.
It has a (U) -shaped cross section and forms a drainage gap 120 between the waterproof floor pan 2 and the land part 20c to guide the drainage from the washing part 20 into the first drainage groove 20a. .

As shown in FIG. 1, the grating 13 has a large number of openings 130 formed above the second drainage groove 20b so that the drainage from the washing place A can flow into the second drainage groove 20b. The notch 22a and the bank cover 11 are also provided on the side of the notch 22a of the bank 22.
Along with the opening 110a, an opening 131 that forms a water passage R to the bathtub installation section 21 side is formed. A similar opening is formed on the notch 22b side of the bank portion 22 of the grating 13.

Next, the flow of drainage in the bathroom unit 1 will be described.

The drainage generated in the washing place A passes through the water flow surface S1 on the land portion 20c of the waterproof floor pan 2, and from the drainage gap 120 of the groove lid 12 and the opening 130 of the grating 13, the first and second drainage grooves. After flowing into 20a and 20b, the second
It is collected in the drain recess 200 in the drain 20b. Then, the drainage that has passed through the drainage recess 200 is drained by the drain trap 10.
After passing through the perforated plate 104 and the water-sealing pipe 103, the water is stored in the water-sealing reservoir 100a of the trap body 100.
By overflowing from the upper end E side of 00a,
The water is discharged from the drainage outlet 100c to the outside of the bathroom by another discharge pipe. In this case, the position of the water sealing surface M of the drain trap 10 rises due to the overflow, but since the valve body 91 of the check valve 9 closes the opening 90 a of the main body 90, the water sealing reservoir 10 is closed.
There is no possibility that the drainage in Oa flows out to the bathtub installation section 21 side of the waterproof floor pan 2.

The drainage in the bathtub body 30 is collected from the bathtub drainage section 31 through the bathtub drainage channel Q to the nozzle section 80 side of the drainage section 8 by pulling out the plug 32 with a bore. Through the shaped pipe 82, the water is poured into the water reservoir 100 a of the drain trap 10. In this case, the inside of the nozzle portion 80 and the L-shaped pipe 82 of the drainage portion 8 is filled with drainage,
Since the valve element 91 of the check valve 9 closes the opening 90a of the main body 90, this drainage does not flow out to the bathtub installation section 21 side.

Further, drainage leaking into the bathtub installation portion 21 through a gap between the bathtub body 30 and the wall panel 4 and a gap between the apron 14 and the bathtub body 30 or the bank portion 22 of the waterproof floor pan 2 are: After being collected in the first drain hole 60 of the water collecting plate 6 through the flowing water surface S2 on the side of the bathtub installation part 21, it is discharged to the drain trap 10 side through the check valve 9 and the drain part 8.

On the other hand, when a large amount of drainage suddenly occurs from the side of the bathtub body 30 to the washing area 20 side of the waterproof floor pan 2 as in the case of bathing in the bathtub body 30 which is almost full, The drainage is supplied from the openings 120 and 130 of the groove lid 12 and the grating 13 to the first and second drainage grooves 20a and 20b.
The notch 22 of the bank 22
a, 22b through the water passage R formed by the grating 13 and the openings 131, 110a of the bank cover 11, and from the washing area 20 side of the waterproof floor pan 2 to the bathtub installation section 21.
Poured into the side. Therefore, even if the drainage holding capacity of the waterproof floor pan 2 on the washing section 20 side is small, the drainage does not flow out from the door frame 5 to the undressing room D side.

The drain water that has flowed into the bath tub installation section 21 of the waterproof floor pan 2 is discharged from the drain trap 10 by discharging the drain water in the first and second drain grooves 20a and 20b of the washing section 20. In a state where the water level on the sealed water reservoir 100a side in 10 is lower than the water level on the bathtub installation part 21, the valve body 91 of the check valve 9 is opened to be discharged to the drain trap 10 side. Then, when the position of the water sealing surface M of the drain trap 10 returns to the position of the upper end E of the sealed water reservoir 100a, all the drain water on the bathtub installation part 21 side is discharged to the drain trap 10 side.

As described above, in the drainage structure of the bathroom unit 1, the bathtub installation section 21 of the waterproof floor pan 2 is replaced by the washing section section 2.
0, and a water passage R for draining water from the washing section 20 to the bathtub setting section 21 is provided in a bank section 22 that separates the washing section 20 from the bathtub setting section 21. When a large amount of drainage is suddenly generated on the (washing section 20) side, a part of the drainage can be discharged to the bathtub installation section 21 side and accumulated, and the washing section 20 of the waterproof floor pan 2 can be collected.
Even if the drainage holding capacity on the
The drain water on the side does not overflow from the door frame 5 to the undressing room D side. Therefore, in the drainage structure of the bathroom unit 1, the draining edge 23a of the wall mounting portion 23 is lowered,
Step L between the upper surface of the washing section 20 and the sill surface 50 of the door frame 5
0 can be reduced, and the position of the upper end of the bathtub main body 30 with respect to the upper surface of the washing section 20 can be lowered, so that the height L1 at which the bathtub main body 30 crosses over can be reduced.

In this case, a first drain hole 60 in which the check valve 9 is provided is formed at the lowest position of the flowing water surface S2 through which the drain water flows, and the first drain hole is formed on the bathtub installation portion 21 side. Since the drain 60 and the drain trap 10 are connected by the drain part 8, the drain water from the bathtub installation part 21 is quickly discharged to the drain trap 10 side and the drain trap 10
The drainage on the side does not flow backward to the bathtub installation section 21 side. Further, in this case, since the drainage in the bathtub body 30 is discharged to the drainage section 8 through the bathtub drainage channel Q having no gap,
Drainage in the bathtub main body 30 after bathing does not flow out onto the flowing water surface S2 on the bathtub installation section 21 side, thereby eliminating odor from the bathtub installation section 21 side.

It should be noted that the check valve 9 is arranged with one end as a center.
It is opened and closed by swinging the other end of the valve element 91, so there is no need to provide a guide for moving the valve element 91, and the valve element moves up and down along the guide to open and close. In comparison with the above, the valve body does not move poorly (sticking) due to squeezing or the like, and the valve is quickly and smoothly opened and closed. Therefore, by using the check valve 9, the drainage from the bathtub installation section 21 can be quickly and reliably discharged to the drainage trap 10 side, and the drainage trap 1
Backflow of drainage from the zero side can be reliably prevented.

In the drainage structure of the bathroom unit 1, the drainage from the bathtub installation section 21 is discharged to the closed reservoir 100 a of the drainage trap 10 disposed below the perforated plate 104, and the drainage trap 10 is drained. , The plate 104 is running surface S
2 is positioned on the waterproof floor pan 2 so as to be higher than the position of the first drain hole 60 at the lowest position of the second floor.
The amount by which the drain trap 10 protrudes downward from the waterproof floor pan 2 can be reduced, and the waterproof floor pan 2 is accordingly installed in a bathroom.
It can be installed close to the installation surface F side of the installation space . Therefore, for example, the distance L2 between the upper surface of the washing section 20 of the waterproof floor pan 2 and the installation surface F can be reduced, and thereby, the distance between the floor surface D1 of the dressing room D and the threshold surface 50 of the door frame 5 can be reduced. The step L3 in and out of the bathroom can be reduced.

In particular, in the drainage structure of the bathroom unit 1, the drainage trap 10 is raised to the upper limit position where the upper end E of the sealed water reservoir 100a is substantially equal to the vertical position of the first drainage hole 60 in the flowing water surface S2. The distance L2 can be minimized, and the step L3 in and out of the bathroom can be reduced accordingly. In addition, the upper end E of the sealed water reservoir 100a
When the second drainage hole 60 is located above the vertical position, a puddle around the first drainage hole 60 that causes odor is formed.

Further, in the drainage structure of the bathroom unit 1, the drainage portion 8 of the bathtub 3 and the second drainage hole 61 of the water collecting plate 6 are provided at positions facing each other. There is no need to provide a space for piping (space for the bathtub drainage channel Q), and the distance L4 between the lower surface of the bathtub body 30 and the running water surface S2 on the side of the bathtub installation section 21 can be reduced, and the straddling height L1 of the bathtub 3 can be reduced. Can be smaller. Further, the bathtub drainage channel Q can be shortened.

Further, in the drainage structure of the bathroom unit 1, the waterproof floor pan 2 is removed by removing the overflow water from the bathtub body 30.
Only when the amount of drainage on the washing area 20 side exceeds the upper surface level of the grating 13, the drainage is discharged from the water channel R to the bathtub installation section 21 side. Emission frequency and emissions can be reduced,
Accordingly, the generation of odor from the bathtub installation section 21 side can be suppressed. In this case, the overflow water from the bathtub body 30 also
Only when a certain amount or more of this is accumulated in the washing area 20 side, it may be discharged from the water passage R to the bathtub installation section 21 side.

In the drainage structure of the bathroom unit 1, a part of the overflow water from the bathtub body 30 flows into the bathtub installation section 21 through the water passage R. Since the amount of wastewater is smaller and relatively clean as compared with the wastewater in 30, the wastewater hardly generates odor from the bathtub installation part 21 side.

Further, in the drainage structure of the bathroom unit 1, the first drainage hole 60 in which the check valve 9 is installed is provided at a position close to the washing area 20 of the waterproof floor pan 2. By removing the bank and the bank cover 11, it is possible to easily reach the check valve 9. Therefore, the check valve 9 can be easily attached to and detached from the water collecting plate 6, and maintenance such as cleaning and replacement of the check valve 9 can be facilitated.

Further, in the drainage structure of the bathroom unit 1, the drainage trap 10 is disposed near the center line N which divides the washing area 20 and the bathtub installation part 21 of the waterproof floor pan 2 into two parts. Since the drainage is discharged to the drain trap 10 through the drainage recess 200, the running water surface S1 of the land portion 20c may be inclined so that the center line N side is lowered, and the center line is moved in parallel. For example,
As compared with the case where the drain trap 10 is disposed on the end side of the washing section 20, the inclination head of the flowing water surface S1 can be reduced. For this reason, in the drainage structure of the bathroom unit 1, the entire waterproof floor pan 2 can be installed so as to be closer to the installation surface F side of the bathroom installation space, and accordingly, the step L3 in and out of the bathroom can be reduced. . In addition, the drain hole 210 on the side of the bathtub installation part 21 also has a drain recess 200 (the drain trap 10).
The same can be said for the inclination head of the flowing water surface S2 because the water supply surface S2 is provided on the side of the center line N close to.

Further, in the drainage structure of the bathroom unit 1, the drainage from the bathtub 3 is discharged to the drainage trap 10, and the drainage from the bathtub installation part 21 is discharged to the drainage trap 10. Since the drainage channel 8 is combined with the first floor pan drainage channel, the drainage structure can be simplified, and the cost and the installation of the bathroom unit 1 can be reduced.

As in this embodiment, the water collecting plate 6
The first drain hole 60 and the bathtub drain channel Q (second drain hole 61) are not integrated with the floor pan drain channel from the drain trap 10 to the drain trap 10.
From the drain trap 10 to the drain pan under the floor pan, respectively. In this case, the check valve 9
May be provided in the first floor pan drainage channel leading to the first drainage hole 60.

Further, instead of providing the water collecting plate 6 as in this embodiment, the first drain hole 60 and the second drain hole 61 may be provided directly in the bathtub installation part 21 of the waterproof floor pan 2. In this case, only the upper surface of the bottom plate part 21a of the bathtub installation part 21 is
To form In particular, regarding the first drain hole 60, the bottom plate portion 2
When a recess having substantially the same size as the opening is provided on the opening 1a, the upper end of the recess serves as the first drain hole 60.

Furthermore, in this embodiment, the integral waterproof floor pan 2 is used, but the washing section 20 side and the bathtub setting section 2 are used.
The same effect can be obtained by using a waterproof floor pan having one side divided.

In this embodiment, the bathtub drainage channel Q
Is formed by the cylindrical packing 7 and the second drainage hole 61 of the water collecting plate 6, but the lower end of the cylindrical packing 7 may be inserted into the second drainage hole 61 to form the bathtub drainage channel Q only by the cylindrical packing 7. Good.

Further, the drain trap 10 may be such that the trap body 100 and the like are formed integrally with the waterproof floor pan 2.

Further, the drainage concave portion 200 of the waterproof floor pan 2 on the washing section 20 side may be formed so as to cover the bank section 22 side. Further, the drain trap 10 may be disposed at a position below the bank 22.

As shown in FIG. 5, a concave groove T1 is formed on the inner surface of the water inlet 100b of the trap body 100, and one end of an L-shaped pipe 82 inserted into the water inlet 100b. A marking T3 is formed on the L-shaped pipe 82 so as to indicate the insertion depth of the L-shaped pipe 82 toward the water inlet 100b.
May be formed so that the drain trap 10 and the drain portion 8 (L-shaped pipe 82) can be easily aligned. That is, for example, the L-shaped pipe 82 is inserted into the water inlet 100b of the drain trap 10 attached to the waterproof floor pan 2.
Just insert one end of the to the position of the marking T3,
The flange portion 82a of the L-shaped pipe 82 is easily positioned with respect to the drain recess 210 of the waterproof floor pan 2.

Further, as shown in FIG. 6, the drain portion 31 of the bathtub 3 is not provided at a position facing the second drain hole 61,
The drainage section 31 and the second drainage hole 61 are connected to the bathtub drainage channel Q (in this case, no gap) disposed below the bathtub body 30 without a gap.
(Flexible pipe).

[0065]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention,
A drain trap into which drainage from the bathroom is drained is provided on the lower surface side of the waterproof floor pan in which a bathtub is installed next to the washing part that forms the washing place, and one step from the washing part. In the drainage structure of the bathroom unit in which part of the drainage from the washing area is poured into the bathtub installation part provided at a lower position, the bathtub is placed at the lowest position of the flowing water surface through which the drainage from the bathtub installation part flows. Forming a first drain hole for collecting and discharging the drainage water on the installation side, and forming a second drain hole at a predetermined position of the flowing water surface for discharging the drainage in the bathtub through a bathtub drainage channel without gaps;
And a drain trap into which the drainage from the washing area is poured.
Do not exceed the top of the sealed reservoir with the position of the first drain hole on the water surface,
Positioned at the same vertical position as the position of this first drain hole
And, further, the first drain hole and tub drainage channel, the first and second floor pan under drainage, connected to the seal of the drain trap basin, furthermore, the first drain hole during or the first drain hole Although the drainage from the bathtub installation section passes through the connected first floor pan drainage channel, a check valve is provided to prevent the backflow of drainage to the bathtub installation section side, so the waterproof floor pan washing area side The drain trap can be provided at a relatively high position on the waterproof floor pan even if the bathtub installation section is lowered one step further so that part of the drainage on the washing area side is discharged to the bathtub installation section.

For this reason, according to the present invention, the step between the upper surface of the entrance and exit of the bathroom and the upper surface of the washing area can be reduced by the shallower washing area side of the waterproof floor pan, and the bathtub installation area can be reduced. Wash it one step lower than the washing area
The bathtub can be dropped into the bathtub installation section side
As a result , the height of the straddle between the upper end of the bathtub and the upper surface of the washing section can be reduced. Further, in this invention, a waterproof floor min bread can be reduced the amount of protrusion of the drain trap downward, the waterproof floor pan, can be placed close to the mounting surface side, correspondingly, the upper surface and undressing room of washing area portion floor With the plane
The distance between the entrance and exit of the bathroom and the floor of the dressing room can be reduced.

According to the second aspect of the present invention,
In the case of the first aspect of the present invention, since the drainage portion of the bathtub and the second drainage hole are provided at positions facing each other, the lower surface side of the bathtub can be brought closer to the bathtub installation portion side of the waterproof floor pan, Accordingly, the height of the straddle between the upper end of the bathtub and the upper surface of the washing section can be reduced.

According to the third aspect of the present invention,
In the case of the first aspect of the present invention, the first floor pan drainage channel and the second floor pan drainage channel are connected to the water trap of the drain trap in a united state. Simplification and cost reduction can be achieved.

According to the invention described in claim 4 of the present invention,
In the case of the invention described in claim 1, the check valve is of a type that opens and closes by swinging the other end side of the valve body around one end side. The drainage can be reliably discharged to the drain trap side, and the drainage of the drain trap side can be reliably prevented from flowing back to the bathtub installation part side.

[Brief description of the drawings]

FIG. 1 is a diagram showing a drainage structure of a bathroom unit according to an embodiment of the present invention.

FIG. 2 is an enlarged view around a water collecting plate of the drainage structure shown in FIG.

FIG. 3 is an enlarged view around a drain trap of the drain structure shown in FIG. 1;

FIG. 4 is a perspective view of a waterproof floor pan of the bathroom unit shown in FIG. 1;

FIG. 5 is a diagram showing a connection state between a drain trap and an L-shaped pipe according to a modified embodiment of the present invention.

FIG. 6 is a view showing a drainage structure of a bathroom unit according to another embodiment of the present invention.

FIG. 7 is a diagram showing a drainage structure of a conventional bathroom unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathroom unit (bathroom) 2 Waterproof floor pan 3 Bathtub 8 Drainage part (1st and 2nd floor pan drainage drainage) 9 Check valve 10 Drain trap 20 Washing part 21 Bathtub installation part 31 Drainage part 60 1st drainage hole 61 Second drain hole 91 Valve body 100a Sealed water reservoir 104 Eye plate (drainage inflow part) E Upper end M Water sealing surface N Center line Q Bathtub drainage channel R Water channel S2 Water surface

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-2-128723 (JP, A) JP-A-3-260230 (JP, A) JP-A 8-270034 (JP, A) JP-A 8- 246528 (JP, A) Japanese Utility Model Application Hei 6-35368 (JP, U) Japanese Utility Model Application 57-123877 (JP, U) Japanese Utility Model Application 52-1433 (JP, U) (58) Field surveyed (Int. ⁷ , DB name) E03C 1/20 E03C 1/28 A47K 4/00

Claims (4)

(57) [Claims] A drain trap into which drainage in a bathroom is provided is provided on a lower surface side of a waterproof floor pan provided with a bathtub installation part for installing a bathtub beside a washing place part forming a washing place. In the drainage structure of a bathroom unit in which a part of the drainage of the washing basin part is poured into the bathtub installation part side provided at a position lower than the washing place part, A first drain hole is formed at the lowest position for collecting and discharging the drainage on the side of the bathtub installation part, and the drainage in the bathtub is discharged to a predetermined position on the flowing water surface through a bathtub drainage channel without a gap. A second drain hole for drainage, and an upper end of a water trap of the drain trap into which drainage from the washing place side is poured .
The upper and lower sides of the first drain hole that do not exceed the position
And the first drain hole and the bathtub drainage channel are connected to the sealed reservoir of the drainage trap by first and second floor pan drainage channels. The drainage at the side of the bathtub installation portion passes through the first drainage hole or the drainage channel under the first floor connected to the first drainage hole, but a check to prevent the backflow of the drainage to the bathtub installation portion side. A drainage structure for a bathroom unit, which is provided with a valve. 2. The drainage structure for a bathroom unit according to claim 1, wherein the drainage portion of the bathtub and the second drainage hole are provided at positions facing each other. Wherein the first floor pan under the drainage channel and the second floor pan under the drainage path, while coalesce claim 1, characterized in that connected to the sealing water reservoir of the drain trap
The drainage structure of the bathroom unit as described. 4. The drainage structure for a bathroom unit according to claim 1, wherein the check valve is of a type that opens and closes by swinging the other end of the valve body around one end. .