JP7363963B2 - Drainage structure in bathroom washing area - Google Patents

Description

An aspect of the present invention relates to a drain structure in a bathroom washing area installed in a bathroom and formed to drain water used in the bathroom.

BACKGROUND ART In recent years, a structure of a drainage part in a bathroom washing area that is installed in a bathroom and is formed to drain water used in the bathroom has been known (for example, Patent Document 1). In the drainage section of such a bathroom, sewage mixed with sebum and the like that flows out when a bather washes his or her body flows into the drainage section, so bacteria are likely to grow on the surface of the drainage section. When bacteria grow on the surface of the drainage area, they form a biofilm. When a biofilm is formed, molds and other organisms can easily reproduce using this biofilm as nutrients. When mold grows, it tends to cause bad odors. Therefore, there is also known a drainage member in which an antibacterial effect is imparted to the surface of the drainage member by applying antibacterial treatment to the surface of the drainage member forming the drainage part (Patent Document 2).

However, simply applying antibacterial treatment to the surface of the drainage member is not sufficient to suppress the occurrence of bad odors in the drainage section of the bathroom. That is, in the drainage section of the bathroom, a water seal is formed in the drain trap of the drainage section by the dirty water mixed with sebum etc. that flows out when a bather washes his body. For this reason, there remains the problem that bacteria are likely to breed in the water seal formed with sewage, and as a result, this water seal is likely to generate bad odors.

Japanese Patent Application Publication No. 2013-204259 JP2011-072868A

The present invention was made based on the recognition of this problem, and by imparting an antibacterial effect not only to the surface of the drainage part but also to the sealing water accumulated in the drain trap, the present invention improves the surface and sealing of the drainage part. To provide a drainage part structure in a bathroom washing area that suppresses the propagation of bacteria in water and suppresses the generation of bad odor from the surface of the drainage part and water seal.

The first invention is a drainage part structure in a bathroom washing area installed in a bathroom and formed to drain water used in the bathroom, the slope part for draining water used in the bathroom. and a drainage pit that forms a drainage outlet by being attached to the washing area floor of the bathroom washing area, and a drainage trap installed on the downstream side of the drainage pit, and the drainage trap stores sealed water. a water seal reservoir, and a water seal tube detachably attached to the water seal reservoir, a lower end of the water seal tube is landed in the water seal, and the water seal tube includes: This drainage structure in a bathroom washing area is formed of a resin containing a substance having an antibacterial effect, and the substance having an antibacterial effect is eluted onto the surface of the resin.

According to this drainage structure in a bathroom washing area, the water seal cylinder is formed of a resin containing a substance that has an antibacterial effect, and since the substance that has an antibacterial effect is eluted to the resin surface, the seal that is a drainage member It can prevent bacteria from growing on the surface of the water bottle. On top of that, since the bottom end of the water sealing tube is in contact with the water seal, the antibacterial substance eluted on the surface of the bottom end of the water sealing tube dissolves in the sealing water, suppressing the proliferation of bacteria in the sealing water. can.
From the above, it is possible to suppress the generation of bad odor from the surface of the drainage section and the water seal.

In a second invention, in the first invention, the drainage pit is formed of a resin containing the substance having an antibacterial effect, and the substance having an antibacterial effect is eluted onto the surface of the resin, and the water sealing tube is This is a drain structure in a bathroom washing area that is characterized by having higher water repellency than the drain pit.

According to this structure of the drainage part in the bathroom washing area, the drainage pit is also made of a resin containing a substance that has an antibacterial effect, so that the substance that has an antibacterial effect is eluted onto the resin surface, so that bacteria can be prevented from forming on the surface of the drain pit. It can also prevent them from breeding. In addition, by making the water seal cylinder more water repellent than the drain pit, the water that flows from the bathroom floor to the drain pit has a certain amount of contact area with the surface of the drain pit. It is possible to contain more substances having antibacterial action eluted on the surface of the pit. Thereafter, the water that has flowed on the surface of the drainage pit flows on the surface of the water seal cylinder and is drained. Water sealing tubes are more water-repellent than drainage pits, so water containing antibacterial substances is quickly drained away. Therefore, it is possible to prevent water containing a substance having an antibacterial effect from stagnating on the way and evaporating. Therefore, water in which a substance having an antibacterial effect has dissolved can be more reliably supplied to the water seal.
From the above, generation of bad odor from the surface of the drainage part and the water seal can be further suppressed.

A third invention is based on the second invention, further comprising a hair catcher having an opening in which a plurality of openings are formed, and the hair catcher is configured such that the water flowing on the surface of the drainage pit catches the surface of the water seal cylinder. This is a drainage part structure in a bathroom washing area, characterized in that it is installed on the surface of the water seal cylinder so as to pass through the hair catcher.

According to this drainage structure in the bathroom washing area, the hair catcher is a water seal located downstream of the outer peripheral end of the water seal so that the water flowing on the surface of the drainage pit passes through the surface of the water seal and the hair catcher. installed on the surface of Due to this, it is thought that the water flowing from the drainage pit to the water seal tube becomes small droplets on the surface of the water seal tube. This water drop then passes through the hair catcher. In other words, the water passes through the hair catcher in the form of small droplets, making it easier to pass through the opening of the hair catcher.
Therefore, even if the hair catcher is provided in the drainage part, it is possible to prevent the hair catcher from blocking the water droplets in which the antibacterial substance has been eluted from being supplied to the water seal.

A fourth invention is based on the third invention, wherein the hair catcher is formed of a resin containing the substance having an antibacterial effect, and the substance having an antibacterial effect is eluted onto the surface of the resin. This is the structure of the drainage section in the bathroom washing area.

The hair catcher collects dirt from hair and dust entangled in the hair. Therefore, even if an antibacterial substance is eluted into the water when it passes through the surface of the drainage pit, when the water passes through the hair catcher, the dirt attached to the hair catcher reacts with the antibacterial substance. There is a risk that the antibacterial effects of the antibacterial substances contained in the water will decrease before the water reaches the water seal.
Therefore, according to this drainage structure in a bathroom washing area, the hair catcher is formed of a resin containing a substance having an antibacterial effect, and the substance having an antibacterial effect is eluted onto the surface of the resin. Therefore, the water droplets that have flowed into the hair catcher can take in the antibacterial substance eluted onto the surface of the hair catcher. Therefore, since the water that has passed through the hair catcher definitely contains a substance that has an antibacterial effect, the substance that has an antibacterial effect can be supplied to the water seal, and it is possible to further suppress the occurrence of a bad odor from the water seal.

According to an aspect of the present invention, by imparting an antibacterial effect not only to the surface of the drainage section but also to the sealed water accumulated in the drain trap, the proliferation of bacteria on the surface of the drainage section and the sealed water is suppressed. In addition, it is possible to provide a drain structure in a bathroom washing area that suppresses generation of bad odor from the surface of the drain and the water seal.

1 is a schematic cross-sectional view showing a bathroom according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the structure of a drainage section in the bathroom washing area of FIG. 1. FIG. FIG. 3 is a schematic cross-sectional view showing a part of the drainage structure in the bathroom washroom shown in FIG. 2;

Embodiments of the present invention will be described below with reference to the drawings. Note that in each drawing, similar components are denoted by the same reference numerals, and detailed explanations are omitted as appropriate.

FIG. 1 is a schematic cross-sectional view showing a bathroom according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view showing the structure of the drainage section in the bathroom washing area of FIG. 1.

As shown in FIGS. 1 and 2, the bathroom 100 according to the embodiment of the present invention includes a bathtub 110 and a bathroom washing area 102. The bathroom washing area 102 has a drainage section 10 formed to drain water used in the bathroom.

The drainage section 10 includes a drainage pit 2 that forms a drainage port of the bathroom washing area 102 by being attached to the washing area floor 101 of the bathroom washing area 102, a drainage trap 4 installed on the downstream side of the drainage pit 2, and a drainage trap 4 that traps hair and the like. A hair catcher 32 for collecting the hair. The drainage pit 2 is at least partially sloped in order to drain water used in the bathroom. That is, the drainage pit 2 has at least a portion formed with a slope in order to drain water used in the bathroom. The drain trap 2 includes a water seal reservoir 12 that stores water seal, and a water seal cylinder 14 that is detachably attached to the water seal reservoir 12. The hair catcher 32 has an opening 33 in which a plurality of openings are formed. The water seal tube 14 has an outer circumferential end portion 14 a formed in a flange shape so as to extend in the outer circumferential direction on the upstream side of the water seal tube 14 . The water seal cylinder 14 is placed in the drainage pit 2 with the outer peripheral end portion 14 a in contact with the drainage pit 2 .

The water seal cylinder 14 is made of a resin containing a substance having an antibacterial effect, and the substance having an antibacterial effect is eluted onto the surface of the resin. From this, it is possible to suppress the proliferation of bacteria on the surface of the water seal cylinder 14.
Similarly, the drainage pit 2 and the hair catcher 32 are also formed of a resin containing a substance having an antibacterial effect, and this substance having an antibacterial effect is eluted onto the surface of the resin. From this, it is possible to suppress the proliferation of bacteria on the surfaces of the drainage pit 2 and the hair catcher 32.

Resin In the present invention, as the resin, for example, either a thermosetting resin or a thermoplastic resin can be used. When the resin molding is large and requires high strength and heat resistance, it is preferable to use a thermosetting resin, and when the resin molding is small and has a complex shape, it is preferable to use a thermoplastic resin.

In the present invention, as the thermosetting resin, it is possible to use one or more selected from urea resin, melamine resin, phenol resin, unsaturated polyester resin, epoxy resin, and silicone resin.

In addition, in the present invention, as the thermoplastic resin, polypropylene resin (PP), polyethylene resin (PE), polyacetal resin (POM), polybutylene terephthalate resin (
PBT), polyvinyl chloride resin (PVC), polystyrene resin (PS), acrylonitrile-butadiene-styrene copolymer resin (ABS), polyphenylene sulfide resin (PP)
S), polyethylene terephthalate resin (PET), polymethyl methacrylate resin (PM
MA), polyamide resin (PA), polyether ether ketone resin (PEEK), polytrimethylene terephthalate resin (PTT), polycarbonate resin (PC), and polytetrafluoroethylene tetrafluoroethylene resin (PTFE). It is possible to use

According to a further preferred embodiment of the present invention, the thermoplastic resin is PP, PE, POM, P
It is more preferable to use one or more selected from BT, PVC, ABS, PPS, PET, PMMA, PA, and PC. Even more preferred among these are PP, POM, ABS
One or more types selected from

Substance with antibacterial action As the substance with antibacterial action used in the present invention, both organic antibacterial and antifungal agents and inorganic antibacterial agents can be used.

Organic antibacterial and antifungal agents In the present invention, organic antibacterial and antifungal agents are those described in the Dictionary of Antibacterial and Antifungal Agents - Original Edition (Journal of the Japan Antibacterial and Antifungal Society, 1998, Vol. 26). It refers to an organic drug that has a MIC (minimum inhibitory concentration) against bacteria and fungi.

In the present invention, examples of organic antibacterial and fungicides include alcohol-based antibacterial and fungicides, aldehyde-based antibacterial and fungicides, thiazoline-based antibacterial and fungicides, imidazole-based antibacterial and fungicides, ester-based antibacterial and fungicides, and chlorine-based antibacterial and fungicides. Antibacterial and antifungal agents, peroxide antibacterial and antifungal agents, carboxylic acid antibacterial and antifungal agents, carbamate antibacterial and antifungal agents, sulfamide antibacterial and antifungal agents, quaternary ammonium salt antibacterial and antifungal agents, biguanide antifungal agents It is possible to use one or more types selected from antifungal agents, pyridine antibacterial and antifungal agents, phenolic antibacterial and antifungal agents, iodine antibacterial and antifungal agents, and triazole antibacterial and antifungal agents.

In the present invention, specifically, the following can be used as the organic antibacterial and fungicidal agent.

Alcohol-based antibacterial and antifungal agents include ethanol, isopropanol, propanol, trisnitro (trishydroxymethylnitromethane), chlorobutanol (1,1,1-trichloro-2-methyl-2-propanol), and bronopol (2-bromo-2). -nitropropane-1,3-diol) can be used.

As the aldehyde-based antibacterial and fungicidal agent, one or more selected from glutaraldehyde, formaldehyde, and BCA (α-bromocinnamaldehyde) can be used.

Examples of thiazoline antibacterial and fungicidal agents include OIT (2-n-octyl-4-isothiazolin-3-one), MIT (2-methyl-4-isothiazolin-3-one), and CMI (5-chloro-2-methyl -4-isothiazolin-3-one), BIT (1,2-benziisothiazolone), and n-butyl BIT (Nn-butyl-1,2-benziisothiazolone-3) can be used. can.

As the imidazole-based antibacterial and fungicidal agent, one or more selected from TBZ (2-(4-thiazolyl)-benzimidazole) and BCM (methyl-2-benzimidazole carbamate) can be used.

As the ester-based antibacterial and antifungal agent, lauricidin (glycerol laurate) and the like can be used.

As chlorine-based antibacterial and fungicidal agents, triclocarban (3,4,4'-trichlorocarbanilide), halocarban (4,4-dichloro-3-(3-fluoromethyl)-carbanilide), 2,4, One or more selected from 5,6-tetrachloroisophthalonitrile, sodium hypochlorite, dichloroisocyanuric acid, and trichloroisocyanuric acid can be used.

As the peroxide-based antibacterial and antifungal agent, one or more selected from hydrogen peroxide, chlorine dioxide, and peracetic acid can be used.

Carboxylic acid-based antibacterial and antifungal agents include benzoic acid, sorbic acid, caprylic acid, propionic acid, 10-undecylenic acid, potassium sorbate, potassium propionate, calcium propionate, sodium benzoate, sodium propionate, and magnesium dihydrogen. One or more selected from bismonoperoxyphthalate and zinc undecylenate can be used.

As the carbamate-based antibacterial and fungicidal agent, sodium N-methyldithiocarbamate and the like can be used.

As the sulfamide-based antibacterial and fungicidal agent, one or more selected from dichlorofluanid and trifluanid can be used.

Quaternary ammonium salt-based antibacterial and fungicidal agents include 4,4'-(tetramethylene dicarbonyldiamino)bis(1-decylpyridinium boromide), benzalkonium chloride, benzotonium chloride, acetylammonium bromide, N, One or more selected from N'-hexamethylenebis(4-carbonyl-1-decylpyridinium bromide) and cetylpyridinium chloride can be used.

As the biguanide antibacterial and antifungal agent, one or more selected from chlorhexidine gluconate, chlorhexidine hydrochloride, polypiguanide hydrochloride, and polyhexamethylene piguanide can be used.

Pyridine-based antibacterial and antifungal agents include sodium pyrithione and zinc pyrithione (ZPT).
: bis(2-pyridithio-1-oxide) zinc), densyl (2,3,5,6,-tetrachloro-4-(methylsulfonyl)pyridine), kappapyrithione (bis(2-pyridithio-1-oxide)) Copper) can be used.

Phenol-based antibacterial and fungicidal agents include thymol (2-isopropyl-5-methylphenol), biosol (3-methyl-4-isopropylphenol), OPP (orthophenylphenol), phenol, butylparaben (butyl-p-hydroxy benzoate), ethylparaben (ethyl-p-hydroxybenzoate), methylparaben (methyl-p-hydroxybenzoate), propylparaben (propyl-p-hydroxybenzoate), meta-cresol, orthocresol, para-cresol, ortho-phenylphenol sodium, chloro One or more selected from phen (2-benzyl-4-chlorophenol) and chlorocresol (2-methyl-3-chlorophenol) can be used.

Iodine-based antibacterial and antifungal agents include Amical 48 iodine (diiodomethyl-p-tolyl-sulfone), polyvinylpyrrolidone iodine, p-chlorophenyl-3-iodopropargyl formal, and 3-bromo-2,3-diiodo-propenylethyl carbonate. , 3-iodo-2-propynylbutylcarbonate.

As a triazole-based antibacterial and fungicidal agent, tebuconazole ((±)-α-[2-(4-chlorophenyl)ethyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1 -ethanol), etc. can be used.

In the present invention, it is possible to use two or more types of organic antibacterial and antifungal agents. This makes it possible to further suppress the growth of bacteria and mold.

In the present invention, it is possible to use two or more types of organic antibacterial and antifungal agents having different elution rates. This makes it possible to suppress the growth of bacteria and mold over a longer period of time.

In the present invention, when two types of organic antibacterial and antifungal agents are used, the resin includes the first organic antibacterial and antifungal agent and the second organic antibacterial and antifungal agent. The elution rate of the first organic antibacterial and antifungal agent is preferably 10-9 g/cm2/h or more, more preferably 10-8 g/cm2/h or more. The elution rate of the second organic antibacterial and antifungal agent is preferably 5 times or more, more preferably 10 times or more, the elution rate of the first organic antibacterial and antifungal agent. As a result, the second organic antibacterial and antifungal agent is rapidly eluted onto the resin surface, making it possible to suppress the growth of bacteria and mold at the beginning of using the resin. Furthermore, since the first organic antibacterial and antifungal agent elutes at a slower rate than the second organic antibacterial and antifungal agent, it is possible to suppress the growth of bacteria and mold over a long period of time.

In the present invention, it is preferable to use one or more selected from thiazoline-based antibacterial and fungicides and pyridine-based antibacterial and fungicides as the organic antibacterial and fungicidal agent. This makes it possible to further suppress the growth of bacteria and mold around water. As the organic antibacterial and antifungal agent, it is more preferable to use a thiazoline antibacterial and antifungal agent and a pyridine antibacterial and antifungal agent.

In the present invention, an organic antibacterial and antifungal agent supported by an inorganic compound can be used. Thereby, the heat resistance of the organic antibacterial and antifungal agent can be improved, and it becomes possible to suppress the generation of gas during hot molding. Furthermore, since the rate at which the organic antibacterial and antifungal agent elutes from the resin can be controlled, it is possible to suppress the growth of bacteria and mold over a long period of time.

As the inorganic compound, it is possible to use one or more selected from zeolite, glass, talc, silica gel, silicate, mica, and sepiolite. Among these, it is preferable to use one or more selected from zeolite, talc, and glass.

In the present invention, the organic antibacterial and antifungal agent is preferably contained in the resin in an amount of 1% by mass or more and 10% by mass or less. This makes it possible to impart antibacterial and antifungal properties to the resin. The content is more preferably 1% by mass or more and 5% by mass or less, even more preferably 1% by mass or more and 3% by mass or less. This provides good moldability during heat molding and makes it possible to suppress the growth of bacteria and mold over a long period of time.

Inorganic antibacterial agents In the present invention, inorganic antibacterial agents refer to antibacterial agents that are at least effective against bacteria, as described in Dictionary of Antibacterial and Antifungal Agents - Original Edition (Journal of the Japan Antibacterial and Antifungal Society, 1998, Vol. 26). It means an inorganic drug that has a MIC (minimum inhibitory concentration).

In the present invention, as the inorganic antibacterial agent, one or more selected from silver-based antibacterial agents, zinc-based antibacterial agents, and copper-based antibacterial agents can be used. This makes it possible to impart antibacterial effects to a wide variety of bacteria, thereby making it possible to suppress the production of biofilms produced by the proliferation of bacteria. Therefore, the growth of mold that adheres using the biofilm as a scaffold can also be suppressed.

In the present invention, as the inorganic antibacterial agent, it is possible to use one or more selected from silver ions, zinc ions, and copper ions supported on an inorganic compound. As the inorganic compound, it is possible to use one or more selected from zeolite, glass, talc, silica gel, silicate, mica, and sepiolite. When using a plurality of ion species, each ion may be supported on the same inorganic compound. Specifically, it is possible to use an inorganic antibacterial agent in which silver ions and zinc ions are supported on glass. Moreover, when using a plurality of ion species, each ion may be supported on a different inorganic compound. Specifically, it is possible to use an inorganic antibacterial agent in which silver ions are supported on glass, and an inorganic antibacterial agent in which zinc ions are supported on zeolite.

In the present invention, it is preferable to use a composite of silver and an inorganic oxide other than silver as the silver-based antibacterial agent. Specifically, silver-zirconium phosphate (AgxHyNazZr2(PO)4
)3) (x+y+z=1), silver chloride-titanium oxide (AgCl/TiO2), silver-zinc calcium phosphate (Ag-CaxZnyAlz(PO)4)6(x+y+z=10), silver zinc aluminum silicate ( Mixture) It is possible to use one or more selected from M2/n.Na2O.2SiO2.xH2O (M:Ag, Zn, NH4)).

In the present invention, zinc oxide/silver/zirconium phosphate (ZnO, AgxHyNazZr2(PO)4)3) or the like can be used as the zinc-based antibacterial agent.

In the present invention, N-stearolyl-L-glatamic acid AgCu salt and the like can be used as the copper-based antibacterial agent.

In the present invention, it is preferable to use a silver-based antibacterial agent as the inorganic antibacterial agent. More preferably, a composite of silver and an inorganic oxide other than silver is used. This makes it possible to suppress excessive elution of silver onto the surface of the resin, making it possible to suppress the growth of bacteria over a long period of time.

In the present invention, the resin preferably contains an inorganic antibacterial agent from 0.1% by mass to 10% by mass, more preferably from 0.1% by mass to 5% by mass, and from 0.1% by mass to 1% by mass. It is even more preferable that the content is less than % by mass. This makes it possible to suppress the growth of bacteria and the production of biofilm over a long period of time.

In the present invention, the elution rate of the inorganic antibacterial agent in the resin is preferably one-fifth or less, and preferably one-tenth or less, of the elution rate of the first organic antibacterial and antifungal agent. is even more preferable. That is, the elution rate is preferably 5 times or more slower than the first organic antibacterial and antifungal agent, and more preferably 10 times or more slower. As a result, the elution rate is slow compared to the first and second organic antibacterial and fungicides, so even after the first and second organic antibacterial and fungicides have been eluted, the inorganic Elution of the antibacterial agent continues. This makes it possible to suppress the growth of bacteria and mold over a long period of time.

The amount of the inorganic antibacterial agent and the organic antibacterial and antifungal agent in the resin and its surface can be obtained by the method shown below.

Using analytical techniques, it is possible to obtain the amount of inorganic antibacterial and organic antifungal agents in the resin and its surface. Analytical methods include X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), electron beam microanalyzer (EPMA), glow discharge optical emission spectrometer (GD-OES), and glow discharge mass spectrometer (GD-MS). ), total internal reflection infrared absorption method (ATR-IR), etc. It can be appropriately selected depending on the type of inorganic antibacterial agent and organic antibacterial and antifungal agent.

It is possible to obtain the amount of inorganic antibacterial agents and organic antibacterial and antifungal agents on the surface of the resin by using the amounts of inorganic antibacterial agents and organic antibacterial and antifungal agents contained in the resin determined by analytical methods. . Measure the rate at which inorganic antibacterial agents and organic antibacterial and antifungal agents elute from the resin. The amount of the inorganic antibacterial agent and the organic antibacterial and antifungal agent on the surface of the resin can be determined from the amounts of the inorganic antibacterial agent and the organic antibacterial and antifungal agent contained in the resin and their elution rates.

Addition of Other Ingredients to the Resin The resin in the present invention may optionally contain other ingredients, such as silicone compounds, talc, glass fibers, carbon fibers, cellulose fibers, antioxidants, photostabilizers, etc. Examples include additives such as UV absorbers, UV absorbers, and colorants. When considering design, an inorganic pigment or an organic pigment can be included as a coloring agent. As the inorganic pigment, titanium oxide, talc, silica, etc. can be used. Organic pigments include Pigment Yellow 83, Pigment Red 48:2, Pigment Red 48:3, Pigment Violet 23, Pigment Blue 15, Pigment Blue 15:1, Pigment Blue 15:2, Pigment Blue 15:3, Pigment Green 7 , Pigment Green 36, etc. These optional components will be explained below.

Silicone Compound In the embodiment of the present invention, the resin forming the water seal cylinder 14 can contain a silicone compound. Thereby, the water repellency of the resin surface can be improved, and it is possible to prevent residual water and dirt from adhering to the resin surface.

The resin forming the water seal cylinder 14 preferably contains a silicone compound in an amount of 0.1% by mass or more and 10% by mass or less, more preferably 0.1% by mass or more and 5% by mass or less, and 2% by mass or more and 4% by mass. It is even more preferable to include the following: This makes it easier for organic antibacterial and antifungal agents and inorganic antibacterial agents to remain on the surface of the resin together with silicone, making it possible to suppress the growth of bacteria and mold over the long term.

Reactive silicone In the present invention, a reactive silicone can be used as the silicone compound. As the reactive silicone, a silicone resin in which one end of the molecular chain is blocked with one selected from a dimethylvinylsiloxane group, an acryloyl group, and a methacryloyl group can be used. Specifically, one-terminally modified acrylic silicone, one-terminally modified methacrylic silicone, etc. may be mentioned.

In the present invention, the reactive silicone is preferably used as a silicone graft resin obtained by graft polymerizing reactive silicone onto a resin. This allows the reactive silicone to be immobilized on the resin, making it possible to maintain water repellency over a long period of time.

In the present invention, the silicone graft resin can be obtained by bonding to the main chain of the resin, for example, a silicone resin in which one end of the molecular chain is blocked with a type selected from a dimethylvinylsiloxane group, an acryloyl group, and a methacryloyl group. I can do it. Specific manufacturing methods are well known, and can be obtained, for example, according to the description in JP-A-8-127660.

For example, when using silicone-grafted polypropylene as the silicone-grafted resin, silicone-grafted polypropylene is commercially available and can also be used in the present invention. Examples of commercially available silicone grafted polypropylene include X-22-2101 (Shin-Etsu Chemical Co., Ltd.) and BY27-201 (Toray Dow Corning Co., Ltd.).

In the present invention, the reactive silicone is preferably contained in the resin in an amount of 0% by mass or more and 10% by mass or less, more preferably 0% by mass or more and 4% by mass or less, and further preferably contained in a range of 2% by mass or more and 4% by mass or less. More preferred.

Non-reactive silicone oil In the present invention, the resin forming the water seal cylinder 14 can contain non-reactive silicone oil as a silicone compound. The non-reactive silicone oil is a compound represented by the general formula R3 SiO-(R2 SiO)n-SiR3 (where R represents an alkyl group that may be the same or different, preferably a C1-6 alkyl group). It is preferable that

As the non-reactive silicone oil, one or more selected from the group consisting of dimethyl silicone oil, methylphenyl silicone oil, alkyl-modified silicone oil, fluorosilicone oil, polyether-modified silicone oil, and fatty acid ester-modified silicone oil can be used. It is possible. Further, the viscosity of silicone oil generally ranges from 0.5 cSt to 1,000,000 cSt, but in the present invention, a viscosity of 10 to 1,000 cSt is preferred in consideration of bleeding of non-reactive silicone. This makes it easier for the non-reactive silicone oil to bleed onto the surface of the resin, making it possible to make the surface of the resin water repellent.

In the present invention, the non-reactive silicone oil preferably contains 0% by mass or more and 5% by mass or less, more preferably 0% by mass or more and 4% by mass or less, and 0.2% by mass or more and 2% by mass or less. It is even more preferable to include the following:

In the present invention, reactive silicone or non-reactive silicone may be used as the silicone compound, or both may be used.

Drainage section structure As shown in FIG. 2, the lower end of the water seal tube 14 lands on the water seal. In other words, the lower end of the water seal cylinder 14 is arranged below the highest water level MHP of the water seal in the water seal reservoir 12 . As a result, the substance having an antibacterial effect eluted on the surface of the lower end of the water seal tube 14 is dissolved in the water seal, and it is possible to suppress the proliferation of bacteria in the water seal.

As described above, the resin forming the water seal cylinder 14 contains a silicone compound.
On the other hand, the resin forming the drainage pit 2 does not contain a silicone compound. That is, the resin forming the water-sealing cylinder 14 has higher water repellency than the resin forming the drainage pit 2. As a result, as shown in FIG. 3, the water flowing from the washing area floor 101 of the bathroom washing area 102 to the drain pit 2 comes into greater contact with the surface of the drain pit 2 than when it flows onto the surface of the water seal cylinder 14. It flows while having an area. Therefore, the surface of the drainage pit 2 can contain more of the eluted substance having an antibacterial effect. The water flowing on the surface of the drainage pit 2 flows on the surface of the water seal tube 14 and is drained. Since the water-sealing cylinder 14 has higher water repellency than the drainage pit 2, the water containing the antibacterial substance is quickly drained. Therefore, it is possible to prevent water containing a substance having an antibacterial effect from stagnating on the way and evaporating. Therefore, water in which a substance having an antibacterial effect has dissolved can be more reliably supplied to the water seal.
It is preferable that the contact angle of water droplets on the surface of the resin containing a silicone compound forming the water sealing cylinder 14 is 100 degrees or more, and in the embodiment of the present invention, it is 104 degrees. In the present invention, "the resin forming the water sealing tube 14 has higher water repellency than the resin forming the drainage pit 2" means, for example, the contact angle of water droplets on the surface of the resin forming the water sealing tube 14. is 5 degrees or more larger than the contact angle of water droplets on the surface of the resin forming the drainage pit 2.

The hair catcher 32 is installed on the surface of the water seal tube 14 on the downstream side of the outer peripheral end 14a of the water seal tube 14 so that water flowing on the surface of the drainage pit 2 passes through the surface of the water seal tube 14 and through the hair catcher 32. Ru. As a result, the water flowing from the drainage pit 2 becomes smaller water droplets on the surface of the water seal cylinder, which has higher water repellency than the drainage pit 2, and then passes through the hair catcher 32. becomes easier to pass through. Therefore, even if the hair catcher 32 is provided in the drainage section 10, it is possible to prevent the hair catcher 32 from preventing water droplets containing a substance having an antibacterial effect from being supplied to the water seal.

The embodiments of the present invention have been described above. However, the invention is not limited to these descriptions.

In the embodiment of the present invention, it is preferable that the resin forming the drainage pit 2 contains methane oxide. As a result, the drainage pit 2 is colored. Therefore, partial discoloration that occurs in the drainage pit 2 when the drainage pit 2 is irradiated with light for a long period of time can be made less noticeable.

Appropriate design changes made by those skilled in the art with respect to the above-described embodiments are also included within the scope of the present invention as long as they have the characteristics of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the bathroom 100, the bathroom washing area 102, etc. are not limited to those illustrated, and can be changed as appropriate.
Furthermore, the elements of each of the embodiments described above can be combined to the extent technically possible, and combinations of these are also included within the scope of the present invention as long as they include the features of the present invention.

2 drainage pit, 4 drainage trap, 12 water sealing storage section, 14 water sealing tube, 14a
outer peripheral end, 32 hair catcher, 33 opening, 100 bathroom, 101 bathroom washing area floor, 102 bathroom washing area, 110 bathtub, 114 drainage pipe

Claims (4)

A drainage structure in a bathroom washing area installed in a bathroom and formed to drain water used in the bathroom,
a drainage pit having an inclined part for draining water used in the bathroom, and forming a drainage port by being attached to the washing area floor of the bathroom washing area;
a drainage trap installed on the downstream side of the drainage pit,
The drain trap has a water seal storage part that stores water seal, and a water seal tube that is detachably attached to the water seal storage part,
The lower end of the water seal cylinder is landed in the water seal,
The water sealing cylinder is formed of a resin containing a substance having an antibacterial effect, including an organic antibacterial and antifungal agent supported on an inorganic compound, and is characterized in that the substance having an antibacterial effect is eluted onto the surface of the resin. Drainage structure in bathroom washing area. The drainage pit is formed of a resin containing the antibacterial substance, and the antibacterial substance is eluted onto the surface of the resin.
The drain structure in a bathroom washing area according to claim 1 , wherein a contact angle of water droplets on the surface of the water seal cylinder is 5 degrees or more larger than a contact angle of water droplets on the surface of the drain pit. further comprising a hair catcher having an opening in which a plurality of openings are formed;
The hair catcher is installed on the surface of the water seal tube downstream from the outer peripheral end of the water seal tube so that water flowing on the surface of the drainage pit passes through the hair catcher. The drainage structure in a bathroom washing area according to claim 2. The hair catcher is formed of a resin containing the substance having an antibacterial effect, including the organic antibacterial and antifungal agent supported on the inorganic compound, and the substance having an antibacterial effect is eluted onto the surface of the resin. The drainage structure in a bathroom washing area according to claim 3.