JP2001248219A - Flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet bowl on which fur dirt is difficult to occur. SOLUTION: In the flush toilet bowl, at least the top face of the lower section of a rim water-conveyance path forming section is tilted so that the front side of the closet bowl is positioned at a section upper than the rear side of the closet bowl, and the sectional areas of the lower end sections of rear spouts positioned on the sides rearer than at least a water reserving section in a plurality of the spouts are made larger than those of upper end sections in the closet bowl, which has a rim water-conveyance path and in which the spouts for spouting wash water onto a bowl surface from the rim water-conveyance path are formed to the lower section of the rim water-conveyance path forming section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for cleanliness in sanitary spaces, and it is widely desired to keep the bowl surface of sanitary sanitary clean. As a method of keeping the toilet surface clean sanitarily in general households since ancient times, surfactants,
A method has been adopted in which a detergent such as an acid or an alkali is applied to a scourer or brush to rub the surface of the ceramic strongly, and both chemical removal by the detergent and physical removal by scrubbing with a scrub brush are used.

[0003]

Heretofore, there has been a problem that, as one of the forms of the flush-type toilet bowl, scale is easily attached to the flowing water portion. This water stain is the above-mentioned surfactant, acid,
A method of applying a detergent such as an alkali to a scourer or a brush and strongly rubbing the ceramic surface could not be sufficiently removed. Therefore, an object of the present invention is to provide a flush toilet that is unlikely to cause the above-mentioned water stain.

[0004]

When observing the surface of a flush-type toilet that has been used for a long period of time, there is a portion where the residual water continues to be supplied under the spout and the pottery surface loses its luster. It was found that water scale composed of a thin film mainly composed of quality was formed. Furthermore, the surface to which the scale was attached had a large surface roughness, so that the stain was easily attached, and the surface state was such that microorganisms such as molds could easily propagate. From the above observations, it is estimated that the adhesion of scale is one of the stains on the surface of the pottery used for a long period of time, and the mechanism of the generation is as follows. (1) On the surface of the pottery just below the water outlet, the remaining water after washing from the water outlet continues to droop for a long time and stays in the vicinity (the direction in which the residual water drips and the location where the water stays are almost the same every time) become). (2) The retained water is dried at that location to form a film of scale (a film made of an inorganic substance such as SiO2 or CaO, which is a mineral component contained in the water, is formed. Rubbing does not completely remove it). Therefore, it is considered that the best method for preventing the generation of water stain is to stop the supply of the residual water from the water discharge port in a short time.

In the present invention, based on the above observation and consideration of the mechanism, a rim water passage is provided, and a plurality of water outlets for discharging cleaning water from the rim water passage to the ball surface are formed below the rim water passage formation portion. At least an upper surface of a lower portion of the rim water passage forming portion is inclined so that a front portion of the toilet is located higher than a rear portion of the toilet, and at least one of the water discharge ports of the water discharge port. The flush toilet according to the present invention is characterized in that the cross-sectional area of the lower end of the rear spout located on the rear side of the section is larger than the cross-sectional area of the upper end. The rim water channel formation section is inclined to guide the residual water to be discharged from the back of the toilet, and the cross-sectional area of the lower end of the water outlet (rear water outlet) of the guided portion is cut off at the upper end. By making the area larger than the area, the residual water after flushing the toilet in the rim water channel is quickly guided to the rear water outlet, and further, the capillary force of the water outlet that induced the residual water is reduced, so that the rim Residual water in the water passage is less likely to remain in the rear water outlet, and streak-like dirt is less likely to be formed.

In a preferred embodiment of the present invention, a water-repellent film and / or a water-slidable film are formed at the rear water outlet. By doing so, it becomes difficult for the residual water after toilet flushing to remain in the rear water outlet, and it becomes more difficult to form streak-like water stains.

[0007] In a preferred embodiment of the present invention, the cross-sectional area of the lower end of the rear outlet is larger than the cross-sectional area of the lower end of the other outlet. Increase the cross-sectional area of the lower end of the rear water outlet (preferably 1 cm ^2-
By setting it to about 10 cm ² ), residual water is removed without staying there, so that streak-like stains are less likely to be formed.

In a preferred embodiment of the present invention, a water-repellent coating and / or a water-sliding coating are formed on at least the upper surface of the lower portion of the rim water passage formation portion. By doing so, residual water after flushing the toilet in the rim water passage becomes easier to be guided by the rear water outlet, and the residual water is removed more quickly. Therefore, it becomes more difficult to form streak-like stains based on residual water.

In a preferred embodiment of the present invention, the water-repellent coating and / or the water-sliding coating is a silicone-containing coating. By doing so, the water-repellent coating and / or the water-sliding coating easily adhere to the glaze or the ceramic surface.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete constitution of the present invention will be described below. FIG. 1 is a view showing an embodiment of a flush toilet according to the present invention. A rim water passage 3 is formed by a rim water passage forming section 2 above a ball surface 1 of the toilet. A plurality of water outlets 5 are formed in the lower part 4 of the water passage forming part 2. A water-repellent film and / or a water-sliding film is formed on a rear water outlet 5a of the water outlet 5 which is located on the rear side of the toilet with respect to the reservoir 6 and a cross-sectional area of a lower end portion of the rear water outlet 5a. Is larger than the cross-sectional area of the upper end. The cross-sectional area of the lower end of the rear water outlet 5a is 5 cm ^2.
It is larger than the cross-sectional area of the lower end of the front water outlet 5b located on the front side of the toilet with respect to the reservoir 6 more than 0.5 cm ² . The upper surface side of the lower part 4 of the rim water channel formation part 2 is inclined from the toilet front side to the toilet rear side, and a water-repellent coating and / or a water-sliding coating is formed. When the flush operation of the toilet bowl is performed, the water supply valve is opened, the flush water is supplied to the rim water passage 3, the ball surface 1 is washed through the water discharge port 5, and the ball surface 1 is drained to below the reservoir section 6. The ball surface 1 is cleaned. In addition, the remaining water after the cleaning is also used in the rim water passage formation unit 2.
A water-repellent coating and / or a water-sliding coating is formed on the upper surface of the lower part 4 of the rim so that it cannot stay, and the inclination of the upper surface of the lower part 4 of the rim water passage forming part 2 causes the water outlet 5a on the rear side of the toilet bowl.
It is guided to. Further, the spout 5a is connected to another spout 5b.
And the lower end has a larger cross-sectional area than the upper end, so that the capillary force does not work easily, and the water-repellent coating and / or the water-sliding coating are formed, so that residual water is formed. Is less likely to stay. Therefore, the remaining water quickly flows down from this portion to the ball surface, and is further removed to the reservoir 6. Therefore, streak-like scale is not easily formed.

In FIG. 1, the water discharge port 5 may be drilled at a constant pitch in the longitudinal direction of the lower part 4 of the rim water passage forming part 2, or may be drilled at a different pitch in consideration of the water force and the like. It may be made to be. When drilling at a constant pitch, the spacing is preferably 1 to 5 cm, more preferably 1.
2 to 3.5 cm.

Further, the diameters of the water outlets 5 may be all the same, or a large hole may be formed in consideration of the water force and the like. The cross-sectional shape of the water outlet 5 is
A circle or an ellipse without a corner is preferred. The cross-sectional shape of the water discharge port 5 when viewed from the side may be any of the trapezoidal shapes in FIG. 2 or a combination thereof.

The water discharge port 5 is formed by a method in which the above-mentioned non-inlaid convex portion is formed in the water discharge port 5 in a molding die and casting is performed, or a method of cutting a molded body after the casting is performed. be able to. In addition, the above-mentioned convex portions and concave portions can be produced by appropriately combining single casting and double casting. For example, in the case of a recess, it can be manufactured by double casting the outside (thick side) of the recess and single casting the inside (thin side). In this way, by making the area of the lower surface side of the lower part 4 of the rim water passage formation part 2 larger than the area of the upper surface side, cracks are less likely to occur in the water discharge port 5 of the fired body of the toilet.

Hereinafter, a water-repellent film and a water-slidable film that can be suitably used in the present invention will be described. The water-repellent film in the present invention means a film having a contact angle with water measured by a contact angle measuring device of 90 degrees or more. Preferably it is 110 degrees or more, more preferably 140 degrees or more.

The water-slidable film in the present invention includes, for example,
Grafting a fluoropolymer and a silicone resin, and
A nano-layer separation structure formed by bonding hydrophilic groups
Membrane, composed of hydroxyl-containing siloxane polymer and crosslinking agent
The surface of the film formed by the sol-gel method
H_Three―Group and CF_Three-Configuration modified with a silane derivative having a group
50mm^ThreeConverted to the falling angle of the water droplet
10 degrees or less, preferably 5 degrees or less, more preferably
Refers to a coating of 1 degree or less. More preferably 20mm ^ThreeWater drops
20 degrees or less, preferably 10 degrees or less
Below, more preferably, a coating of 5 degrees or less.

As the water-repellent coating in the present invention, a silicone coating, a fluororesin coating, a fluorine compound coating or the like can be used.

The silicone coating in the present invention is a silicone in which one or more organic groups are bonded to silicon atoms in the silicone, that is, an average composition formula RpSiXqO.
(4-pq) / 2 (wherein, R is a monovalent organic group having 1 to 18 carbon atoms, X is an alkoxy group having 1 to 4 carbon atoms,
p and q are 0 <p <2, 0 <q <4, 0 <p + q <4
This is a film obtained by curing the silicone represented by the formula (1).

The silicone is a bifunctional silane derivative monomer (a monomer having two hydrolyzable groups per molecule and forming a bifunctional siloxane bond in which two oxygen atoms are bonded to each silicon atom) and / or 3 A functional silane derivative monomer (a monomer having three hydrolyzable groups per molecule and forming a trifunctional siloxane bond having three oxygen atoms bonded to each silicon atom) as an essential component,
Functional silane derivative monomer (having 4 hydrolyzable groups per molecule and 4 oxygen atoms bonded to each silicon atom)
A composition containing a monomer that forms a functional siloxane bond) is obtained by hydrolysis and polycondensation.

Here, as the bifunctional silane derivative, dimethyldimethoxysilane, dimethyldiethoxysilane,
Diphenyldimethoxysilane, diphenyldiethoxysilane, phenylmethyldimethoxysilane, phenylmethyldiethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ- (meth) acryloxypropylmethyl Dimethoxysilane, γ- (meth) acryloxypropylmethyldiethoxysilane, γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyldiethoxysilane, heptadecafluorooctylmethyldimethoxysilane, heptadecafluorooctylmethyldiethoxysilane, Trifluoropropylmethyldichlorosilane and the like can be suitably used.

Examples of trifunctional silane derivatives include methyltrimethoxysilane, methyltriethoxysilane, methyltriisopropoxysilane, methyltributoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, ethyltriisopropoxysilane, and ethyltritoxysilane.
Butoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriisopropoxysilane, vinyltributoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, n
-Propyltriisopropoxysilane, n-propyltributoxysilane, n-hexyltrimethoxysilane, n-hexyltriethoxysilane, n-hexyltriisopropoxysilane, n-hexyltritbutoxysilane, n-decyltrimethoxysilane, n -Decyltriethoxysilane, n-decyltriisopropoxysilane, n-decyltributoxysilane, n-octadecyltrimethoxysilane, n-octadecyltriethoxysilane, n-octadecyltriisopropoxysilane, n-octadecyltributoxysilane, phenyl Trimethoxysilane, phenyltriethoxysilane,
Phenyltriisopropoxysilane, phenyltributoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-glycidoxypropyltriisopropoxysilane, γ-glycidoxypropyltrit Butoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriisopropoxysilane, β- (3,4-epoxycyclohexyl) ethyl tributoxysilane, γ- (meth) acryloxypropyltrimethoxysilane, γ- (meth) acryloxypropyltriethoxysilane, γ- (meth) acryloxypropyltriisopropoxy Orchid, γ- (meth) acryloxypropyl tributoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropyltriisopropoxysilane, γ-aminopropyltributoxysilane, γ-mercapto Propyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropyltriisopropoxysilane, γ-mercaptopropyltributoxysilane, trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, trifluoropropyltriisopropoxy Silane, trifluoropropyltributoxysilane, heptadecafluorooctyltrimethoxysilane,
Heptadecafluorooctyltriethoxysilane, heptadecafluorooctyltriisopropoxysilane, heptadecafluorooctyltributoxysilane, and the like can be suitably used.

As the tetrafunctional silane derivative, tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, dimethoxydiethoxysilane and the like can be suitably used.

Of the above silicones, γ-glycidoxypropyl group, β- (3,4-epoxycyclohexyl)
Those having a group, a γ- (meth) acryloxy group or the like can form an organic cross-link other than the siloxane cross-link, and are preferable in obtaining room-temperature curability.

Further, a curing agent may be added to enhance the room temperature curability. Examples of the curing agent include lithium hydroxide, sodium hydroxide, potassium hydroxide, sodium methylate, sodium acetate, sodium formate, potassium acetate, potassium formate, potassium propionate, tetramethylammonium chloride, tetramethylammonium hydroxide and the like. Basic compounds; n-hexylamine, tributylamine, diazabicycloundecene, ethylenediamine, hexanediamine, diethylenetriamine, triethylenetetramine, tetraethylenebentamine, ethanolamines, γ-aminopropyltrimethoxysilane, γ- Aminopropylmethyldimethoxysilane, γ- (2-aminomethyl) -aminopropyltrimethoxysilane, γ- (2-aminomethyl) -aminopropylmethyldimethoxysilane, etc. Titanium compounds such as tetraisopropyl titanate and tetrabutyl titanate; aluminum compounds such as aluminum triisobutoxide, aluminum triisopropoxide, aluminum acetylacetonate, aluminum perchlorate, and aluminum chloride; tin acetylacetonate, dibutyltin Tin compounds such as octylate; metal-containing compounds such as cobalt octylate, cobalt acetylacetonate and iron acetylacetonate; and acidic compounds such as phosphoric acid, nitric acid, phthalic acid, p-toluenesulfonic acid, and trichloroacetic acid are preferable. Available to

Further, metal oxide fine particles may be added to improve the hardness and abrasion resistance of the cured film, or to improve the gloss by increasing the refractive index. As the metal oxide, silica, alumina, cerium oxide, tin oxide, zirconium oxide, hafnium oxide, antimony oxide, iron oxide, titanium oxide, rare earth oxide, and the like can be used.

In a coating composition for a flush toilet containing a room-temperature-curable silicone, it is preferable that the coating composition is dispersed in a non-aqueous solvent in order to improve the storage stability of the coating composition. As the non-aqueous solvent, alcohol, ketone, ester, toluene, xylene, hexane and the like can be suitably used.

A method of forming a silicone coating on the water discharge port 5a of the flush toilet is as follows: after masking as necessary, applying a paint containing the silicone and / or a precursor thereof by spraying or the like; By curing. For curing the silicone, methods such as standing at normal temperature, heating, and irradiation with ultraviolet rays can be used.

The fluororesin used in the present invention includes:
For example, polyvinyl fluoride, polyvinylidene fluoride, polychlorinated ethylene trifluoride, polytetrafluoroethylene, polytetrafluoroethylene-hexafluoropropylene copolymer, ethylene-polytetrafluoroethylene copolymer, ethylene-polychlorinated trifluoroethylene copolymer, tetrafluoroethylene Fluorinated ethylene-perfluoroalkyl vinyl ether copolymer,
Perfluorocyclopolymer, vinyl ether-fluoroolefin copolymer, vinylester-fluoroolefin copolymer and the like can be suitably used.

The fluorine compound used in the present invention includes lithium fluoride, magnesium fluoride, calcium fluoride, strontium fluoride, barium fluoride, scandium fluoride, yttrium fluoride, zirconium fluoride, hafnium fluoride, fluorine fluoride. Manganese fluoride, iron fluoride, cobalt fluoride, nickel fluoride, copper fluoride, aluminum fluoride, gallium fluoride, indium fluoride, bismuth fluoride, lanthanum fluoride, cerium fluoride, praseodymium fluoride, neodymium fluoride , Samarium fluoride,
Europium fluoride, terbium fluoride, dysprosium fluoride, holmium fluoride, erbium fluoride, thulium fluoride, ytterbium fluoride, lutetium fluoride and the like can be suitably used.

A method of forming a silicone coating on the water discharge port 5a of the flush toilet is by masking if necessary, then applying the above-mentioned paint containing the fluororesin or the fluorine compound by a method such as spraying, and then applying the fluororesin or By curing the fluorine compound. For curing the fluororesin or the fluorine compound, methods such as standing at normal temperature, heating, and irradiation with ultraviolet rays can be used.

The water-repellent coating and / or the water-sliding coating in the flush toilet of the present invention may contain an antimicrobial agent. Antibacterial agents include silver, copper, antibacterial metals such as zinc and their compounds, fine particles or carriers such as silica gel and zeolite, carriers, quaternary ammonium salts, nitrile derivatives, imidazole derivatives, benzothiazole derivatives, isothiazole derivatives, Thiatithiazole derivatives, triazine derivatives, sulfone derivatives, phenol derivatives, phenol ester derivatives, pyrrole derivatives and the like can be suitably used.

[0031]

According to the present invention, it is possible to provide a flush toilet that is less likely to cause water stains.

[Brief description of the drawings]

FIG. 1 is a diagram showing a toilet having a rim water channel.

FIG. 2 is a diagram showing a cross-sectional shape when the water outlet of the present invention is viewed from the side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ball surface, 1a ... Ball surface (rear side of toilet), 2 ... Rim water channel formation part, 3 ... Rim water channel, 4 ... Lower part of rim water channel formation portion, 5 ... Water outlet, 5a ... Water outlet (toilet) Rear side),
6 ... Sump section

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomoyasu Ichiki 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Touchi Kiki Co., Ltd. (72) Atsushi Yoshida Nakajima, Kitakyushu-shi, Fukuoka 2-1-1, Totoki Equipment Co., Ltd. (72) Inventor Masami Ando 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Inventor Koichi Hayashi Kitakyushu, Fukuoka Prefecture 2-1-1 Nakajima, Kokurakita-ku Totoki Equipment Co., Ltd. (72) Inventor Mitsuyoshi Machida 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2D039 AA02 AC03 DB04

Claims (5)

[Claims] 1. A toilet having a rim water passage, wherein a plurality of water outlets for discharging washing water from the rim water passage to the ball surface are formed below the rim water passage formation section, wherein the rim water passage formation is performed. At least the upper surface of the lower part of the part is inclined such that the toilet front side is located above the toilet rear side,
A flush toilet, wherein a cross-sectional area of a lower end portion of a rear outlet port located at a rear side of at least a reservoir portion of the water outlet port is larger than a cross-sectional area of an upper end portion. 2. The flush toilet according to claim 1, wherein a water-repellent film and / or a water-slidable film is formed on the rear water outlet. 3. The flush toilet according to claim 1, wherein a cross-sectional area of a lower end of the rear water outlet is larger than a cross-sectional area of a lower end of another water outlet. 4. The flush toilet according to claim 1, wherein a water-repellent coating and / or a water-sliding coating are formed on at least an upper surface of a lower portion of the rim water passage forming portion. . 5. The water-repellent coating and / or the water-sliding coating is a silicone-containing coating.
The flush toilet according to 4.