JP2000001888A - Drainage structure of bathroom unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the degree of freedom of a design by installing a valve, which does not flow out hot and cold water in a bathtub drain pipe and introduces hot and cold water on the outside of the pipe into the pipe, to the bathtub drain pipe communicating a bathtub and the drainage section of a floor pan. SOLUTION: An underfloor drainage member 5 with a strainer 7 is installed to the bathtub mounting section 2b of a floor pan 2 and a floor-pan drain inlet section 10 is formed, and a bathtub drain pipe 4 is formed of a floor-side connecting section 4a, a flexible pipe 4h, etc. A plane section 4c, an opening section 4d and a check valve 4e are set up to the floor-side connecting section 4a, and a void 4g is formed between the plane section 4c and the interior wall of a packing material 5c. When water is drained from a bathtub 3, the valve 4e closes the opening section 4d, and drain is introduced to the member 5. Since the valve 4e opens the opening section 4d after drainage, hot and cold water flowing in the bathtub mounting section 2b are drained to the drainage member 5 from the opening section 4d through the void 4g from a flange 5b. Accordingly, since the bathtub and the drainage section of the floor pan can be disposed at arbitrary places by the flexible drain pipe, the degree of freedom of the shapes of the bathtub and the floor pan can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for a bathroom unit provided with a drainage part for a bathtub and a drainage part for a bathtub installation part.

[0002]

2. Description of the Related Art In the prior art, Japanese Patent Laid-Open Publication No.
As shown in No. 8, after the drainage of the bathtub and the drainage hole of the bathtub installation part were provided, the water leaking from the periphery of the bathtub to the bathtub installation part side of the waterproof pan (floor pan) was collected at the water collection part. Since the wastewater can be discharged from the drainage channel to the drainage trap, the wastewater treatment on the bathtub installation portion is easily performed.

[0003]

However, in the above-mentioned prior art, the positions of the drainage portion of the bathtub, the drainage hole of the bathtub installation portion, and the water collecting portion are limited, and the shape of both the bathtub and the floor pan is limited. The degree of freedom was low.

[0004] For example, when the shape of a bathtub (or floor pan) is changed in terms of design or usability, the position of the drainage portion of the bathtub (or floor pan drainage hole) must be changed accordingly. If it occurs, drain the floor pan
(Or the drain of the bathtub) had to be repositioned. In practice, if only one of the bath tub and floor pan needs to be reshaped, the drain of the bath tub or floor pan should be reduced in order to reduce the number of changed parts and minimize the cost burden. Since the design is made so that only the position of the drainage hole is not changed, the position of the drainage part of the bathtub and the waterproof floor pan drainage part is limited, and both the bathtub and the floor pan are subject to design restrictions. , The degree of freedom in shape was low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and even in a bathroom unit having a bathtub drainage section and a bathtub installation section drainage section, the degree of freedom of the shape of the bathtub and floor pan is improved. It is an object of the present invention to provide a drainage structure for a bathroom unit.

[0006]

According to a first aspect of the present invention, there is provided a bath tub, a floor pan, and a tub drain pipe communicating between both drains. In the bathroom unit, the hot water in the bathtub drainpipe is not discharged to the outside of the bathtub drainpipe, but the hot water outside the bathtub drainpipe is characterized by using a bathtub drainpipe having an opening provided with a valve to pass into the bathtub drainpipe.

According to the present invention, the hot water in the bathtub drain pipe is not allowed to flow out of the bathtub drain pipe, but the hot water outside the bathtub drain pipe is provided with an opening provided with a valve for passing the hot water into the bathtub drain pipe. Therefore, it is not limited to the positions of the bathtub drainage section and the floor pan drainage hole, and it is possible to collect water leaking from the periphery of the bathtub to the floor pan bathtub installation section side. The degree of freedom in shape can be increased.

According to a second aspect of the present invention, in the first aspect, a part of the bathtub drainage pipe has flexibility.

According to the present invention, even if the positions of the drain portion of the bathtub and the drain hole portion of the floor pan are slightly changed, they can be attached.

A third invention is characterized in that, in the invention described in the first or second aspect, a strainer is provided in a floor pan portion where the bathtub drain pipe communicates.

According to the present invention, the hot water in the bathtub drainpipe is not discharged to the outside of the bathtub drainpipe, but the hot water outside the bathtub drainpipe may be clogged with hair and debris in an opening provided with a valve for passing the water into the bathtub drainpipe. The hot water in the bathtub drainpipe does not flow out of the bathtub drainpipe, but does not impair the function of passing the hot water outside the bathtub drainpipe into the bathtub drainpipe.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below. FIG. 1 is a sectional view of a bathroom unit 1 according to one embodiment of the present invention.

The bathroom unit 1 comprises a floor pan 2 comprising a washing section 2a and a bathtub installation section 2b, a bathtub 3 and a bathtub drain 4
And a drain member 5 under the floor, a drain trap 6, a wall 8, and a ceiling, lighting, faucet, and the like (not shown). The drain trap 6 and a drain main pipe (not shown) are connected by a drain pipe 9.

FIG. 2 shows the underfloor drainage member 5 of the bathroom unit 1.
It is a detailed sectional view of the circumference. The floor pan drain hole 10 has a state in which the underfloor drainage member 5 is attached to the opening of the bath tub installation part 2b of the floor pan 2, and the underfloor drainage member 5 includes the underfloor drainage elbow 5a, the flange 5b, the packing material 5c, and the drainage. It is composed of a connecting pipe 5d and a U-shaped packing 5e. The underfloor drainage elbow 5a and the flange 5b are connected to the bathtub installation portion 2 of the floor pan 2.
The opening b is connected via a U-shaped packing 5e. At this time, the flange 5b is at the lowest position in the bathtub installation part 2b. The flange 5b has an opening, and a packing material 5c having a cylindrical inner wall is connected to the opening via a strainer 7. The packing material 5c is made of a rubber-based material, and the packing material 5c is detachable from the flange 5b together with the strainer 7.

The underfloor drainage member 5 and the drainage trap 6 are connected by a drainage connection pipe 5d. The bathtub drain pipe 4
Floor-side connection 4a, flexible pipe 4h, and bathtub-side connection 4
i.

FIG. 3 is a perspective view of the floor side connecting portion 4a of the bathtub drain pipe 4 and the underfloor drainage member 5. The floor side connection part 4a is connected to the underfloor drainage member 5 as described later. The bathtub side connection part 4i is connected to the bathtub drainage part 3a as shown in FIG. The floor-side connecting portion 4a of the bathtub drainage pipe 4 includes a fitting portion 4b, a flat portion 4c, an opening 4d, and a check valve 4e.
The fitting portion 4b has a cylindrical shape, and the outer diameter thereof is substantially the same as the inner wall of the packing material 5c of the underfloor drainage member 5, and the fitting portion 4b is fitted to the inner wall of the packing material 5c while maintaining water honey. Fitting part 4
b is detachable from the packing material 5c. Fitting part 4b
Is inserted into the packing material 5c, the two projections 4f are hooked up and down on the packing material 5c, so that the depth of the insertion is always constant. When the fitting portion 4b is fitted into the packing material 5c, the flat portion 4c is located at an appropriate distance from the inner wall of the packing material 5c, and the flat portion 4c and the packing material 5c are positioned.
A gap 4g is formed between the inner wall and the inner wall. The flat portion 4c has an opening 4d, and when the fitting portion 4b is fitted into the packing material 5c, the lower end of the opening 4d is located below the top end of the flange 5b. At this time, since the insertion depth of the insertion portion 4b with respect to the packing material 5c is always constant, the positional relationship between the lower end of the opening 4d and the top end of the flange 5b is also always constant. As described above, the bathtub 3, the bathtub drain pipe 4, the underfloor drainage member 5, and the drain trap 6 are communicated.

When the water stopcock 3b of the bathtub drain 3a is opened from a state where hot water is contained in the bathtub 3, the hot water of the bathtub 3 is drained through the bathtub drain pipe 4, the underfloor drainage member 5, and the drain trap 6. Drained into pipe 9. At this time, pressure is generated inside the bathtub drain pipe 4 due to drainage from the bathtub 3, and the pressure causes the check valve 4 e to close the opening 4 d. For this reason, the hot and cold water from the bathtub 3 is guided to the underfloor drainage member 5 without leaking out from the opening 4d. Next, when the drainage of the bathtub 3 is completed, the pressure difference between the inside and outside of the bathtub drain pipe 4 disappears,
The check valve 4e returns to its original position to open the opening 4d. In this state, hot water flowing from the periphery of the bathtub 3 to the bathtub installation portion 2b side of the floor pan 2 can be collected.

On the other hand, the hot and cold water that has reached the bath tub installation section 2b from the gap between the bath tub 3 and the wall 8 flows first to the flange 5b located at the lowest position in the bath tub installation section 2b, and then falls into the gap 4g, and It is drained to the underfloor drainage member 5 through 4d. While the water in the bathtub 3 is being drained as described above,
Although the opening 4d is closed by the check valve 4e, the opening 4d is opened after the drainage is completed, so that the hot water on the bathtub installation part 2b is drained from the opening 4d under the floor 4d after the completion of the drainage of the bathtub 3. The water is drained to the member 5. Check valve 4e
Is a valve that is mounted in the bathtub drain pipe 4 and does not allow hot water in the bathtub drain pipe to flow out of the bathtub drain pipe, but passes hot water outside the bathtub drain pipe into the bathtub drain pipe.

When the hot water or water on the bathtub installation section 2b flows to the flange 5b, the hair or dust on the bathtub installation section 2b also flows to the flange 5b. Garbage is collected. Therefore, the opening 4d is clogged by hair or dust,
There is no hindrance to opening and closing the check valve 4e. In addition, since a part of the bathtub drain pipe 4 is constituted by the flexible pipe 4h, the positions of the bathtub drain part 3a and the underfloor drainage member 5 can be set arbitrarily. Various degrees of freedom.

Since the present invention is configured as described above, the following effects can be obtained.

According to the first aspect of the present invention,
In a bathroom unit composed of a bathtub, a floor pan, and a bathtub drainage pipe connecting both of these drainage sections, hot water in the bathtub drainage pipe is not allowed to flow out of the bathtub drainage pipe, but hot water outside the bathtub drainage pipe is in the bathtub drainage pipe. The use of a bathtub drain with an opening with a valve through it allows the shape of the bathtub and floor pan to be more flexible because it is not limited to the positions of the bathtub drain and floor pan drain. be able to.

According to the second aspect of the present invention,
According to the first aspect of the present invention, since a part of the bathtub drainage pipe has flexibility, the drainage part of the bathtub and the drainage hole of the floor pan can be located at arbitrary positions.

According to the third aspect of the present invention,
In the invention according to claim 1 or 2, a strainer is provided in a floor pan portion to which the bathtub drainage pipe communicates, so that hot water in the bathtub drainage pipe does not flow out of the bathtub drainage pipe. Hair and dirt do not get clogged in the opening with a valve that allows the hot water to pass into the bathtub drain pipe, and the hot water inside the bathtub drain pipe does not flow out of the bathtub drain pipe, but the hot water outside the bathtub drain pipe passes into the drain pipe. Does not impair the function.

[Brief description of the drawings]

FIG. 1 is a sectional view of a bathroom unit according to an embodiment of the present invention.

FIG. 2 is a detailed cross-sectional view around the underfloor drainage member 5 of FIG. 2;

FIG. 3 is a perspective view of a floor-side connection portion 4a of a bathtub drain pipe 4 and an underfloor drainage member 5.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bathroom unit 2 ... Floor pan 2a ... Washing area 2b ... Bathtub installation part 3 ... Bathtub 3a ... Bathtub drainage part 3b ... Water stopcock 4 ... Bathtub drainage pipe 4a ... Floor side connection part 4b ... Fitting part 4c ... Flat part 4d ... Opening 4e ... Check valve 4f ... Protrusion 4g ... Void 4h ... Flexible pipe 4i ... Bathtub side connection 5 ... Underfloor drainage member 5a ... Underfloor drainage elbow 5b ... Flange 5c ... Packing material 5d ... Drainage connection pipe 5e ... U-shaped packing 6… drain trap 7… strainer 8… wall 9… drain pipe 10… floor pan drain hole

Claims (3)

[Claims] 1. A bath unit comprising a bathtub, a floor pan, and a bathtub drainage pipe communicating both of these drainage parts, wherein hot water in the bathtub drainage pipe is not discharged to the outside of the bathtub drainage pipe, but hot water outside the bathtub drainage pipe is discharged. Is a drainage structure of a bathroom unit using a bathtub drainage pipe having an opening with a valve to pass into the bathtub drainage pipe. 2. The drainage structure for a bathroom unit according to claim 1, wherein a part of the bathtub drainage pipe has flexibility. 3. The drainage structure for a bathroom unit according to claim 1, wherein a strainer is provided at a floor pan portion to which the bathtub drainage pipe communicates.