JP2001132071A - Flush toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet having a washing method suited to the case, where a surface treatment layer is formed on the surface of a bowl. SOLUTION: During cleaning of a water closet, the washing water is supplied from a branch hole 42 to a rim water supply passage 43 and discharged to a guide recessed portion 24a, formed by depression to a gutter shape almost in the horizontal direction along the upper edge of the bowl surface (exposed surface 24 in detail) of a bowl portion. Rim-shot washing water RS discharged in this way causes turning almost in the horizontal direction along the upper edge portion on a bawl surface, while being guided by the guide recessed portion 24a, thereby creating branched flows at various places from the revolving main flow, and is transmitted and drops down along the exposed surface 24. A surface treatment layer is formed on the surface of bawl surface in the region, where the rim-shot washing water is transmitted and drops down. Then the rim-shot washing water moves merely by sliding on the surface treatment layer, thereby causing no collision or the like on the surface of the treatment layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet for flushing fresh flush water through a toilet bowl.

[0002]

2. Description of the Related Art In recent years, it has been common practice to provide a rim over the periphery of the upper end of a bowl portion of a flush toilet and to discharge flush water downward from the lower surface of the rim toward the ball surface. When the rim water is discharged in this manner, dirt and toilet paper adhering to the ball surface of the flush toilet can be slid down along the ball surface into the pool water of the toilet bowl portion by the flush water.

By the way, when excrement is excreted in the bowl portion of the toilet bowl, the excrement may fall on the ball surface and adhere to the ball surface. is there. Therefore, in order to enhance the releasability of dirt and the like from the ball surface, the surface of the ball surface is sometimes subjected to a surface treatment so that dirt is easily removed. In addition, a surface treatment may be applied to improve design properties such as gloss.

[0004]

When a surface treatment is applied to the surface of a ball or the like, a surface treatment layer is formed on the surface where the treatment is performed as a result of the treatment. As described above, the flush water from the lower surface of the rim falls and collides with the surface treatment layer. The collision of the washing water with the surface treatment layer occurs every time the toilet is washed, so that the surface treatment layer may be damaged or peeled off.

[0005] In the existing rim water spouting, washing water is spouted downward through a hole formed in the lower surface of the rim. Therefore, simply piercing the holes may leave a region on the ball surface where the cleaning water is not sprayed with the water discharged from each hole. If the washing water is not applied in this manner, the surface treatment layer in that area does not become moist, so that it is impossible to exhibit the releasability of dirt in the area. In order to prevent such a situation from occurring, it is necessary to devise the formation interval, size, shape, and the like of the holes on the lower surface of the rim.
It was complicated.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a flush toilet having a cleaning method suitable for a case where a ball has a surface treatment layer.

[0007]

In order to solve the above-mentioned problems, a flush toilet according to the present invention forms a ball surface for receiving dirt and uses flush water as stored water even when not flushing. A flush toilet having a toilet bowl portion to be stored and a trap for discharging the stored water together with dirt by new flushing water flowing to the toilet bowl portion by a flushing means, wherein the flushing means includes A means for passing new washing water from the upper edge side, so that the washed washing water swirls in a substantially horizontal direction along the upper edge of the ball surface, the toilet bowl portion includes: A surface treatment layer is provided on a surface of the ball surface in a region where the passed washing water is transmitted along the ball surface while causing the turning.

In the flush toilet of the present invention having the above structure, the new flush water passed through the bowl portion by the flush means is:
While turning in a substantially horizontal direction along the upper edge of the ball surface, it is transmitted down along the ball surface. As described above, the surface treatment layer exists in the ball surface area where the cleaning water is transmitted, but the new cleaning water simply moves to slide on the surface treatment layer surface and does not collide with the treatment layer surface. . Therefore, according to the flush toilet of the present invention, it is possible to prevent the surface treatment layer on the ball surface from being easily damaged or peeled off when the ball surface is cleaned with fresh cleaning water. In addition, the above-described behavior of the swirling and transmission of the washing water makes it possible to wet almost the entire surface of the ball with the washing water, so that no area remains without the washing water, and the properties of the surface treatment layer are suitable. Can be demonstrated in.

[0009] The first and second flush toilets of the present invention having the above configuration can also adopt the following modes. That is, the surface treatment layer may be formed by laminating a plurality of layers, or the outermost layer may exhibit a function of preventing adhesion of dirt. By doing so, the properties of each layer due to the multi-layer structure, for example, the lowermost layer on the ball surface side has a high bondability with the ceramic surface (ball surface), and the bonding force of the entire surface treatment layer to the ball surface is increased. Can be. In addition, a layer having a coloring property is provided in the middle, and a layer having a light-transmitting property is superposed on the layer, so that the color tone can be presented and the color fading can be prevented. Further, the outermost layer can prevent the attachment of dirt and the like.

[0010] The toilet bowl portion may also have the surface treatment layer on the surface of the ball surface in a region exposed when the pool water is discharged. In this way, it is possible to prevent the surface treatment layer from adhering dirt and the like even in a region exposed when the stored water is discharged.

Further, the surface treatment layer may have hydrophilicity or water repellency on its surface.
This makes it possible to surely prevent the adhesion of dirt. That is, if the surface is hydrophilic, the water is spread along the ball surface, and if the surface is water-repellent, the water is repelled and the water flows along the ball surface. Dirt and dirt on the ball surface can be removed. In this case, the surface treatment layer may be made to exhibit water repellency or hydrophilicity in the surface of the ball surface in the upper peripheral portion of the ball surface. In this way, it is possible to ensure that water does not remain on the surface of the ball surface at the upper edge of the ball surface, so that even if a hand or the like touches the region when cleaning the toilet bowl, the hand gets wet with water. It is preferable because it does not occur.

In order to form a water-repellent surface treatment layer, the surface of the ball may be treated with a water-repellent agent containing a silane compound to form a surface treatment layer (water-repellent layer). Prior to the water-repellent layer forming treatment, it is preferable that a large number of silanol groups (-Si-OH) exist in the treated surface region of the ball surface. For example, water or steam is brought into contact with the treated surface area of the ball surface, or a chemical etching treatment is applied to the surface area, or the alkoxide is fixed to the surface area by a sol-gel method or the like, What is necessary is just to surface-treat with a water repellent agent. In this case, the bonding strength of the water-repellent agent to the ball surface is increased, and the surface treatment layer can be firmly bonded to the ball surface.

In order to form a hydrophilic surface-treated layer, a layer containing a photocatalyst represented by titanium dioxide is formed on the surface of the ball surface by a technique such as baking. In this case, the photocatalyst generates active oxygen species (hydroxyl radicals) to create a situation of excessive hydroxyl groups on the surface, whereby the surface can be made hydrophilic. In addition, the surface roughness is Ra
To form a treatment layer of less than 0.07 μm on the ball surface. In forming the surface treatment layer, (1) a raw material having a 50% particle size (D50) of 1.5 μm as measured by a particle size distribution measurement using a laser diffraction method is used as a raw material of a processing agent (specifically, a glaze). Alternatively, (2) a glaze material that has been vitrified in advance is used. Or (3) a pre-vitrified glaze raw material and a conventionally used glaze raw material (50% particle size (D50) by particle size distribution measurement by laser diffraction method is 6 μm)
Use a mixture of about glaze raw materials). Or
(4) A mixture of a pre-vitrified glaze raw material and a finer glaze raw material than before is used.

[0014] In this case, the surface treatment layer surface of the ball surface has an unprecedented smoothness and exhibits hydrophilicity, so that it becomes difficult for dirt to adhere firmly. As a result, even if it adheres, it does not come into contact with water. , And the raised dirt can be removed by running water. In a conventional flush toilet, the surface roughness Ra of the glaze layer is about 0.1 μm, and the surface has large irregularities. On the other hand, the surface of the glaze layer (surface treatment layer) is very smooth and has only slight irregularities. Here, it is assumed that dirt of the same type and size adheres to both surfaces. At this time, when comparing the adhesion strength between the stain and the glaze layer surface, it is considered that the conventional product having a larger contact area is stronger, and the smooth surface treatment layer surface is weaker because the contact area is smaller.

Alternatively, a glaze layer is formed as a surface treatment layer on the base surface of the ball surface, and the glaze layer contains a detergent component (builder) which does not lose its function by firing for exhibiting hydrophilicity. By continuously releasing the components on the layer surface, it is possible to remove dirt attached to the layer surface.

Further, if the surface treatment layer has an antibacterial property on its surface that inhibits the growth of fungi,
It is preferable because dirt due to the propagation of fungi can be prevented. When exhibiting antibacterial properties, fine particles such as silver may be contained.

The above-mentioned water passage means has a jet spout for directly spouting new washing water into the pool water of the toilet bowl portion, and a jet water passage for passing the washing water to the jet spout. Things. In this case, since the washing water is jetted from the jet outlet in addition to the rim water jetting described above, the ball portion can be more reliably washed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, embodiments of a flush toilet of the present invention will be described below. FIG. 1 is an explanatory diagram showing a siphon-jet type toilet bowl 10 according to an embodiment of the present invention with a part of the upper surface thereof being cut away, and FIG. 2 is an explanatory diagram showing a vertical cross section of the toilet bowl 10. FIG. 3 is a cross-sectional view of FIG.
It is three-line schematic sectional drawing. This siphon jet toilet 1
In the case of No. 0, the washing water is ejected from the jetting holes 22 to be described later and the washing water is ejected at the upper edge of the ball surface along with the washing.
Hereinafter, each part of the toilet 10 will be described with reference to FIGS. 1 to 3.

As shown in FIG. 1 and FIG.
Is provided with a ball portion 20 for receiving filth. Ball part 20
Has a water-covered surface 23 that is in contact with the stored water RW even when the toilet 10 is not washed, and an exposed surface 24 that is not in contact with the stored water RW when the toilet 10 is not washed.

As shown in FIG. 1, the jet port 22 is
Zet water supply hole 45 which is an inlet of water from which this hole 22 gushes out
Are connected via a jet water supply channel 46 formed to bend the inside of the toilet. As shown in the drawing, the jetting hole 22 is provided at a position substantially facing the discharge port 25 with the concave portion 26 interposed therebetween, and the energy of the cleaning water is transmitted to the discharge mechanism after the discharge port 25 without waste. Therefore,
The siphon effect can be caused earlier.

A mechanism for supplying water to the bowl 20 (hereinafter referred to as a supply mechanism) and a mechanism for discharging wastes in the bowl 20 toward the drainage start-up pipe 90 are provided inside the toilet 10. (Hereinafter, referred to as a discharge mechanism).

First, the supply mechanism will be described. Toilet bowl 1
A cleaning water supply hole 40 is provided at the rear of the cleaning water supply hole 40 as a cleaning water inflow hole from a drain pipe (not shown) of the cleaning water tank 310. A flush water supply passage 41, which is a flow path of flush water from the flush water tank 310, is provided inside the toilet 10 from the flush water supply hole 40 toward the ball section 20. The washing water supply channel 41 is a stagnation portion 41a (FIG. 2) as a space interposed between the jet water supply channel 46 for jetting the washing water to the ball portion and the lower end of the drain pipe of the washing water tank 310.
(See Reference). The rim water supply channel 43 is formed in the vicinity of the wash water water supply hole 40 by branching off from the stagnant portion 41a of the wash water water supply passage 41. The branch portion is provided with a branch for inflow of the wash water into the rim water supply channel. A hole 42 is provided.
The cleaning water discharged from the drain pipe flows into the stagnation portion 41a during the cleaning, and the inflowing cleaning water flows out to the rim water supply channel 43 through the jet water supply channel 46 and the branch hole 42. Acts as a gapless air gap.

That is, the stored water (wash water) in the tank urged by the free fall is supplied to the wash water supply passage 41 at a stretch. For this reason, the stagnant portion 41 a in which the washing water supply passage 41 is formed obliquely downward is filled with water after the start of washing, and a part of the washing water is supplied from the branch hole 42 to the rim water supply passage 43. The cleaning water supplied to the rim water supply channel 43 is discharged from a water discharge hole 44 at the tip of the rim water supply channel. The drain hole 44 is formed on the ball surface of the ball portion 20 (specifically, the exposed surface 2).
4) It is formed so as to communicate with the guide concave portion 24a formed in a substantially horizontal groove along the upper edge. Therefore,
The behavior of the cleaning water discharged from the water discharging hole 44 (hereinafter, the cleaning water discharged in this manner is referred to as rim shot cleaning water) is as follows. FIG. 4 is an explanatory diagram for explaining the behavior of the rim shot cleaning water. As shown
The rim shot cleaning water RS is supplied to the guide recess 2 of the ball portion 20.
While being guided by 4a, the ball is swirled in a substantially horizontal direction along the upper edge of the ball surface, and flows from the swirling mainstream into a branching flow at various places, and is transmitted down along the exposed surface 24 and falls. Note that the above-described recessed shape of the guide recess 24a is shown in FIGS.
The shape is not limited to the shape shown in the above, and if the cleaning water swirling while being guided by the guide recess 24a becomes a flow branched off from the main swirling flow at various places and is transmitted along the exposed surface 24 and falls down, Good.

The flow of the cleaning water branched from the main stream of the rim shot cleaning water RS thus slides on the ball surface, and imparts a counterclockwise turning force to the stored water RW of the ball portion. As a result, the pool water RW in the ball portion 20 is discharged from the discharge port 25 as a counterclockwise swirling flow. As described above, since the rim shot cleaning water causes the stored water to swirl, the effect of discharging the stored water and the dirt in the stored water is enhanced.

The water discharge hole 44 and the rim water supply passage 43
May be formed on the right side in FIG.

The washing water that has reached the stagnation section 41a is
The water enters a jet water supply hole 45, which is a hole provided in a side wall of the stagnation portion 41a. The washing water is supplied to the Z water supply channel 46 in accordance with this approach. The cleaning water supplied to the Z water supply channel 46 is jetted from the Z jet holes 22. When the stagnant portion 41a is filled with the wash water from the wash water tank and the water level reaches the branch hole 42, the wash water is guided from the branch hole 42 to the rim water supply passage 43, and as described above. The rim shot cleaning water is discharged from the drain hole 44.

The distribution of the discharge amount of the rim shot cleaning water from the water discharge hole 44 and the discharge amount of the jet from the jet hole 22 can be adjusted by adjusting the effective passage area of the branch hole 42 (the opening area of the cleaning water discharge location). 2 can be arbitrarily set by adjusting the bottom height H of the stagnant portion 41a around the branch hole shown in FIG.

Further, in this embodiment, the ball surface of the ball portion 20, more specifically, a region 2 indicated by a chain line in FIGS.
4b, a surface treatment layer is provided. This area 24b
Extends from the lower end side connecting portion of the guide recess 24 a of the ball portion 20 to the upper end of the discharge port 25 on the water-covered surface 23 so as to include all the exposed surfaces 24. In addition, the above-mentioned area 24b
Can be extended to the upper end of the ball surface including the surface of the guide recess 24a. The state of formation of this surface treatment layer and its effect will be described later.

Next, the discharge mechanism will be described. As shown in FIG. 2, at the end of the discharge port 25 formed at the back of the concave portion 26 serving as a waste pool, as a flow path (trap) for water and dirt, it curves obliquely upward from the discharge port 25. A connection path 31, an ascending path 32 that extends in the bending direction of the connection path 31 and then curves in the horizontal direction, and a descending path 33 that curves in the downward direction from the horizontal direction are formed.

The end of the descending passage 33 is connected via a drain socket 70 made of resin to a drain rising pipe 90 provided on the wall or floor on the building side. The distance k from the rear end of the toilet 10 to the center of the drainage riser pipe 90 shown in FIG.
The distance j from the rear end of the washing water tank 310 attached to the toilet 10 to the center of the drainage riser pipe 90 is 190 mm. That is, if the drainage riser pipe 90 is set up at a position 200 mm from the wall of the toilet room, the set of the toilet bowl 10 and the wash water tank 310 is moved between the back of the wash water tank 310 and the wall of the toilet room. It can be installed with a clearance of 10 mm secured. As described above, according to the set of the toilet bowl 10 and the washing water tank 310, the drainage riser pipe 90 can be provided at a position near the wall on the building side. As a result, the distance from the drainage riser pipe 90 to the pipe space is shortened, and smooth conveyance of waste can be ensured. Of course, when the clearance with the wall of the toilet room is not considered, the distance k and the distance j can be set to values of 200 mm or less.

These flow paths are formed integrally with the toilet bowl 10 which is pottery by shaping the flow path shape into a gypsum mold or a resin mold, but the flow path is formed by a member different from the toilet bowl 10. It is also possible. For example, all or some of these flow paths may be formed of another member such as resin and connected to the outlet 25. In the case of the toilet 10 of the wall drainage specification corresponding to the case where the drainage riser pipe 90 is provided on the wall side of the building, the shape of the end of the descending passage 33 is set so that the drainage direction is directed to the wall. In other words, the end of the descending path 33 may be connected to a bend pipe directed toward the drainage riser pipe 90.

As shown in FIG. 2, the toilet 10 before the washing operation is performed.
, The connection path 31, the ascending path 32, and the ball portion 2
Within 0, the water RW is stored at the height of the normal water level line WL. The stored water RW prevents the backflow of the odor from the drainage mechanism to the ball portion 20 and the entry of the pests. Further, in this embodiment, while the amount of the pool water RW is reduced, the width is 185 m.
A large pool surface having a value of mx 225 mm in depth is secured to prevent the attachment of dirt to the ball portion 20 and the emission of odor from the exposed surface 24.

The pooled water RW includes water collected inside the ball portion 20 up to the discharge port 25 (hereinafter, this water is referred to as ball portion stored water), a connection path 31 and a rising path 32 after the discharge port 25. (Hereinafter, this water is referred to as “water in the flow path”), and water that accumulates in the lower part of the stagnation portion 41a of the toilet 10 and in the jet water supply passage 46 (hereinafter, this water is referred to as “jet water”). As shown in FIG. 2, the accumulated water in the flow path is collected only at one location from the connection path 31 to the ascending path 32 in the sewage flow path including the connecting path 31, the ascending path 32, and the descending path 33. . Note that “sewage” refers to water that is soiled due to mixing of waste such as stool and urine, paper, and the like.

Normal water level line WL in toilet when not flushing
Is determined by the height of the weir 34, which is the highest position below the inner wall of the ascending path 32. Therefore, as shown in FIG. 2, the lower region of the stagnation portion 41 a of the toilet 10, the Z water supply hole 45, and the Z water supply passage 46 are located below the weir 34, and therefore, when the toilet 10 is not washed (stationary state). Is
In the lower region of the stagnation portion 41a and the Zet water supply channel 46,
At the above-mentioned water level, Zetto pool water is stored. In addition, weir 3
If the height of 4 is reduced, the water level of the stored water RW is also lowered, and the amounts of the ball portion stored water, the water stored in the flow path, and the Zet stored water are also reduced.

A mechanism for discharging sewage and filth by the drainage mechanism configured as described above will be described. When the cleaning water is discharged from the cleaning water tank 310, the discharged cleaning water first flows into the retaining section 41a, and the potential energy of the cleaning water is used as the kinetic energy to store the jet water stored in the jet water supply passage 46 in the ball section 20 of the ball section 20. Pour into water. As a result, washing water jetting from the jet outlet 22 toward the above trap is started, and thereafter, while the discharge of the washing water is continued, the discharged washing water itself continues from the jet outlet 22 with the above energy. It is gushing. In the early stage of the progress of the jetting operation, the stagnation portion 41a is filled with the washing water, the water level reaches the branch hole 42, and the above-described rim shot washing water is jetted from the water discharging hole 44 through the branch hole 42. Is done.

The part where the jetting of Zet is started and which is bent from the ascending path 32 to the descending path 33 (hereinafter referred to as a bent part).
Is full, a pressure difference is generated between the tip in the descending path 33 and the pooled water ball 20 side, and a downward pulling force is generated. Due to this drawing force, the sewage at a position lower than the bent portion is discharged together with the sewage into the drainage rising pipe 9.
It is led to 0. Thus, a siphon effect is induced.

Here, the surface treatment layer formed on the ball surface region 24b will be described. 5 to 9
FIG. 4 is an explanatory diagram illustrating a surface treatment layer formed in the region 24b.

As shown in FIG. 5, a single-layer glaze layer 2 is formed as a surface treatment layer on the base surface of the ball surface in the region 24b. In this surface treatment layer, a detergent component that does not lose its function due to firing is contained for exhibiting hydrophilicity, and the detergent component is continuously released to the surface of the layer,
Dirt adhering to the surface of the surface treatment layer is removed.

As shown in FIG. 6, a surface treatment layer composed of two glaze layers is formed on the base surface of the ball surface in the region 24b. In this surface treatment layer, a colored first glaze layer 2 and a transparent second glaze layer 4 on its upper surface are formed from the ball surface base surface side. At least one of the first and second glaze layers (preferably, the second glaze layer 4)
Has a detergent component that does not lose its function as described above, and due to continuous release of the detergent component on the layer surface,
Dirt adhering to the surface of the surface treatment layer is removed.

As shown in FIG. 7, a surface treatment layer composed of two glaze layers is formed on the base surface of the ball surface in the region 24b. In this surface treatment layer, first and second glaze layers made of a substance containing a detergent component that does not lose its function by firing are laminated and formed from the ball surface base surface side. Dirt adhering to the surface of the treatment layer is removed. In this case, the outermost glaze layer 2 may have coloring properties.

As shown in FIG. 8, a surface treatment layer composed of three glaze layers is formed on the base surface of the ball surface in the region 24b. In this surface treatment layer, a colorable first glaze layer 2 is formed from the ball surface base surface side, and a second glaze layer 4 and a third glaze layer 3 are formed on the glaze layer, respectively. Have been. At least one of the second glaze layer 4 and the third glaze layer 3 (preferably, the third glaze layer 3) is a layer made of a substance containing a detergent component that does not lose its function by firing as described above. Have been. The third glaze layer 3 is a transparent glaze layer. Again,
As described above, the dirt adhering to the surface treatment layer surface is removed.

As shown in FIG. 9, a surface treatment layer composed of three glaze layers is formed on the base surface of the ball surface in the region 24b. In this surface treatment layer, a first glaze layer 4 is formed from the ball base surface side, and a second glaze layer 2 and a third glaze layer 3 are formed on the glaze layer, respectively. . In this case, the first glaze layer 4 on the base surface of the ball surface is a layer made of a substance containing a detergent component which does not lose its function by firing, and the second glaze layer 2 is a colored glaze layer. The third glaze layer 3 is a transparent glaze layer. Also in this case, the dirt adhering to the surface treatment layer surface is removed by continuous release of the detergent component on the layer surface. Note that the second glaze layer 2 and the third glaze layer 3 can also be layers made of a substance containing a detergent component that does not lose its function by firing.

The detergent component (builder) which does not lose its function by baking is defined as 1100 for baking the flush toilet of this embodiment.
A detergent component which does not lose its function even after being heated at a temperature of 1300 ° C. For example, a metal component having a monovalent valence and / or a metal component having a Pauling electronegativity scale of 1 or less is preferable. Available to

Generally, the glaze layer contains Si as a main component, a trivalent metal component such as Al, a divalent metal component such as Ca, Mg and Zn, and an alkali metal component such as Na and K.
In the embodiments of FIGS. 5 and 6, preferably, the metal component having a monovalent valence and / or a metal component having a scale of Pauling's electronegativity of 1 or less is used for the entire metal component constituting the glaze. 7% by weight or more in terms of oxide.

Here, as the monovalent metal component, Li, Na, K, Rb, Cs, Ag, Cu, Au and the like can be suitably used. The metal components having a Pauling electronegativity scale of 1 or less include Li, Na, K, and R.
b, Cs, Ba, Sr, etc. can be suitably used. further,
Among the above metal components, alkali metal components such as Li, Na, K, Rb, and Cs are less than 20% by weight, preferably 15% by weight or less in terms of oxide based on the entire metal components constituting the glaze. It is preferable from the viewpoint of manufacturing. Further, among the monovalent metal components, Ag and Cu are used.
Is preferred because it also exhibits antibacterial properties. Especially Ag
In the case of (1), it is preferable that the amount is 0.1% by weight or more in terms of oxide with respect to the whole metal component constituting the glaze, because the antibacterial property is exhibited. preferable.

A layer composed of a substance containing a detergent component which does not lose its function upon firing is a metal component having a substantially monovalent valence and / or a metal component having a Pauling electronegativity scale of 1 or less. This is a layer composed of a detergent component that does not lose its function by baking the compound or the like. Here, compounds containing a monovalent metal component and / or a metal component having a Pauling electronegativity scale of 1 or less include sodium carbonate, potassium carbonate, lithium carbonate, cesium carbonate, rubidium carbonate, and barium carbonate. , Strontium carbonate, silver carbonate, cuprous carbonate, sodium silicate, potassium silicate, lithium silicate, cesium silicate, rubidium silicate, barium silicate, strontium silicate, silver silicate, cuprous silicate, sodium chloride, potassium chloride, lithium chloride, Cesium chloride, rubidium chloride, barium chloride, strontium chloride, silver chloride, cuprous chloride, sodium acetate, potassium acetate, lithium acetate, cesium acetate, rubidium acetate, barium acetate, strontium acetate, silver acetate, cuprous acetate, sulfuric acid Sodium, potassium sulfate, lithium sulfate, sulfuric acid Cesium, rubidium sulfate, barium sulfate, strontium sulfate, silver sulfate, cuprous sulfate, sodium nitrate, potassium nitrate, lithium nitrate, cesium nitrate, rubidium nitrate, barium nitrate, strontium nitrate, silver nitrate, cuprous nitrate, sodium lactate, sodium lactic acid Potassium, lithium lactate, cesium lactate, barium lactate, rubidium lactate, strontium lactate, silver lactate, cuprous lactate, sodium borate, potassium borate, lithium borate, cesium borate, rubidium borate, barium borate, borate Strontium acid, sodium propionate, potassium propionate, lithium propionate, cesium propionate,
Rubidium propionate, Barium propionate, Strontium propionate, Silver propionate, Cuprous propionate, Sodium butyrate, Potassium butyrate, Lithium butyrate, Cesium butyrate, Rubidium butyrate, Barium butyrate, Strontium butyrate, Silver butyrate, Cuprous butyrate , Sodium formate, potassium formate, lithium formate, cesium formate, rubidium formate, barium formate, strontium formate, silver formate, cuprous formate, gold (I) chloride, water gold, gold powder, silver powder, water glass, H (AuCl ₄ )・ 4H ₂ O, Na (AuCl ₄ )
2H ₂ O or the like can be suitably used.

Here, the point that the surface treatment layer exhibits hydrophilicity and the point of preventing adhesion of dirt will be described. In the above surface treatment layer, the glaze layer constituting the surface treatment layer can be substantially hydrated. For this reason, the stains such as oily stains and scales attached to the glaze layer surface (surface treatment layer surface) are easily removed as follows. FIG. 10, FIG.
FIG. 1 is a schematic diagram schematically showing a state of dirt removal on the surface of the surface treatment layer.

The dirt attached to the ball surface of the flush toilet of the embodiment includes, for example, stool (contains a large amount of oleic acid and bacteria) in the case of stool, microorganisms such as bacteria and fungi, and scale, and urine in the case of urine. Principal fouling is oily fouling containing carboxyl end groups, and scale. For example, the oily stain containing the carboxyl end group attached to the ball surface is firstly a metal component having a monovalent valence and / or a metal having a scale of Pauling's electronegativity of 1 or less due to the presence of the detergent component. The components are preferentially added to or adsorbed to the oily soil by a substitution reaction. Thereby, the affinity of the dirt with water is improved, and when the dirt is a low molecular weight, the dirt is made water-soluble (saponified). Here, if the glaze layer is made of a hydratable substance, a hydration layer is formed on the surface of the glaze layer (surface treatment layer) as shown in FIG. At the same time, the saponified soil can move considerably freely on the surface of the hydration layer or in the hydration layer as an electrolyte. Therefore, on the ball surface of the flush toilet that is inclined in the direction of gravity, as shown in FIG. 11, the oily dirt moves in the direction of gravity without being particularly washed, so that the dirt is automatically removed. become. In addition, in this embodiment, the rim shot cleaning water is discharged as described above, and the presence of this cleaning water greatly enhances the dirt removal effect.

As the hydratable substance, a substance (for example, silica, silicate, etc.) containing a SiO ₄ network structure having non-bridging oxygen through which water molecules can pass through the structure can be used.

One method for forming the surface treatment layer (glaze layer 2) shown in FIG. 5 is to use, for example, a metal component having a monovalent valence of at least 7% by weight in terms of oxide and / or a Pauling electric component. After preparing a frit glaze made of a metal component having a scale of negativeness of 1 or less and pulverizing as necessary, the region 24b
And fired at a temperature of 1100 to 1300 degrees. Another method of forming the surface treatment layer (glaze layer 2) shown in FIG. 5 is, for example, a method in which a monovalent metal component and / or a Pauling electronegativity scale of 1 is added to a usual coloring glaze raw material. Prepare a glaze in which a salt containing the following metal component is added in an amount of 7% by weight or more in terms of oxide with respect to all metal components of the glaze, pulverize if necessary, and apply to the ball surface base surface in the region 24b. At a temperature of 1100 to 1300 degrees.

Another method of forming the surface treatment layers (glaze layers 2 and 4) shown in FIG. 6 is, for example, to apply a normal coloring glaze to the surface of the ball surface in the region 24b, and then further apply it. A salt containing a metal component having a monovalent valence and / or a metal component having a scale of Pauling's electronegativity of 1 or less is added to the usual coloring glaze raw material in terms of oxide based on the total metal component of the glaze. Apply 1100% by weight or more of glaze
Baking at a temperature of 1300 degrees. Another method of forming the surface treatment layers (glaze layers 2 and 4) shown in FIG. 6 is, for example, to apply a normal coloring glaze to the ball surface base surface in the region 24b, and then to further increase the valence. A pigment containing no more than 7% by weight, in terms of oxide, of a monovalent metal component and / or a metal component having a Pauling electronegativity of 1 or less and containing no pigment or emulsifier (frit) glaze is applied. 1300
Firing at a temperature of degrees.

In the method of forming the surface treatment layers (glaze layers 2 and 4) shown in FIG. 7, for example, a detergent component that does not lose its function due to firing of water glass or the like is contained on the ball surface base surface in the region 24b. After applying the substance, a normal colored glaze is applied and fired at a temperature of 1100-1300 degrees. Another method of forming the surface treatment layers (glaze layers 2 and 4) shown in FIG. 7 is, for example, to provide a material containing a detergent component which does not lose its function by baking water glass or the like on the ball surface base surface in the region 24b. After coating, frit glaze composed of a metal component having a monovalent valence and / or a metal component having a scale of Pauling's electronegativity of 1 or less is pulverized, if necessary, and applied thereon. By firing at a temperature of ~ 1300 degrees. Another method of forming the surface treatment layers (glaze layers 2 and 4) shown in FIG.
After applying a substance containing a detergent component that does not lose its function by baking water glass or the like to the base surface of the ball surface, a monovalent metal component having a valency of a normal coloring glaze raw material and And / or a Pauling electronegativity scale of 1
The glaze was prepared by adding a salt containing the following metal components to the total metal components of the glaze by adding 7% by weight or more in terms of oxide, and applying 11%.
Baking at a temperature of 00 to 1300 degrees.

The method for forming the surface treatment layers (glaze layers 2 to 4) shown in FIG. 8 is, for example, to apply a normal coloring glaze to the base surface of the ball surface in the region 24b, and then apply water glass on the glaze. Then, a substance containing a detergent component that does not lose its function due to firing is applied, and a glaze containing no pigment or emulsifier is applied thereon, and fired at a temperature of 1100 to 1300 degrees.

The method of forming the surface treatment layers (glaze layers 2 to 4) shown in FIG. 9 is performed, for example, by applying a substance containing a detergent component which does not lose its function due to baking of water glass or the like.
A normal coloring glaze is applied thereon, and further a glaze containing no pigment or emulsifier is applied thereon.
Bake at a temperature of 00 degrees.

According to the flush toilet of the present embodiment described above, the above-mentioned surface treatment layer is provided on the base surface of the ball surface in the region 24b shown in FIG. 2 and FIG. The rim shot washing water described above was spouted. Therefore, there are the following advantages. First, the formed surface treatment layer itself has a function of automatically removing dirt, and the rim shot cleaning water is spouted so as to slide along the surface of the surface treatment layer. Can increase. In addition, the rim shot cleaning water is swirled in a substantially horizontal direction along the upper edge of the ball surface while being guided by the guide concave portion 24a corresponding to the upper edge of the ball surface of the ball portion 20, and flows at various points from the swirling main flow. And it is transmitted down along the exposed surface 24. In this way, when the rim shot cleaning water is transmitted and dropped, the rim shot cleaning water merely slides on the surface treatment layer on the ball surface base surface in the region 24b, and may collide with the treatment layer surface. Absent. Therefore, according to the flush toilet of this embodiment, it is possible to prevent the surface treatment layer on the ball surface from being easily damaged or peeled when the ball surface is cleaned with the rim shot cleaning water, which is new cleaning water. In addition, the above-described behavior of the rim shot cleaning water swirling and transmission falling makes it possible to wet almost the entire surface of the ball surface with the cleaning water, so that no area remains without the cleaning water, and the properties of the surface treatment layer Can be suitably exhibited.

Next, another surface treatment layer to be combined with the ball surface cleaning using the rim shot cleaning water will be described.
That is, instead of the above-mentioned surface treatment layer, the following surface treatment layer can be used.

In order to form a hydrophilic surface treatment layer, a layer containing a photocatalyst represented by titanium dioxide is formed on the surface of the ball surface by a technique such as baking. Specifically, a glaze containing a photocatalyst may be applied to the ball surface base surface in the region 24b and fired. In this case, the photocatalyst generates active oxygen species (hydroxyl radicals) to create a situation of excessive hydroxyl groups on the surface, whereby the surface can be made hydrophilic.

A treatment layer having a surface roughness Ra of less than 0.07 μm is formed on the ball surface. When forming this surface treatment layer, as a raw material of a treatment agent (specifically, glaze), (1) 50
A raw material having a% particle size (D50) of 1.5 μm is used. Alternatively, (2) a glaze material that has been vitrified in advance is used. Alternatively, (3) a mixture of a pre-vitrified glaze raw material and a conventionally used glaze raw material (a glaze raw material having a 50% particle size (D50) of about 6 μm in particle size distribution measurement by a laser diffraction method) is used. Alternatively, (4) a mixture of a pre-vitrified glaze raw material and a finer glaze raw material than before is used. Then, these glazes may be applied to the ball surface in the region 24b and fired.

In this way, the surface treatment layer surface of the ball surface is provided with an unprecedented smoothness, that is, the contact angle with water is reduced to exhibit hydrophilicity, and dirt is hardly adhered. However, even if it adheres, it can be lifted by contact with water, and the lifted dirt is removed by about the amount of running water.

A surface treatment layer exhibiting water repellency can also be used. In this case, the surface of the ball may be treated with a water-repellent agent containing a silane-based compound to form a surface treatment layer (water-repellent layer). It is preferable that a large number of silanol groups (—Si—OH) exist in the treated surface region. For example, contacting water or steam with the treated surface area of the ball surface, or
Subject the surface area to a chemical etching treatment, or
After fixing the alkoxide on the surface region by a sol-gel method or the like, the surface treatment may be performed with the above-described water repellent. In this case, the bonding strength of the water-repellent agent to the ball surface is increased, and the surface treatment layer can be firmly bonded to the ball surface.

The embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the gist of the present invention. Of course.

For example, in the above embodiment, the low tank type tank connected to the toilet bowl was used as the flush water tank. However, a tank other than the low tank type tank, for example, connected to the toilet bowl through the flush pipe and connected to the toilet wall, was used. For example, a tank with a corner or a flat plate may be used. In this case, it is also possible to install the washing water tank at a high position to form a high tank.

In addition, the present invention relates to a siphon
And the case of applying it to a siphon urinal as an example,
It can also be grasped as an invention in which the above toilet and other devices and members are combined. For example, it can be applied to a flush toilet that only performs rim shot flushing and spouting to perform toilet flushing, or a sanitary washing device combined with a functional toilet seat that realizes various functions such as local cleaning and heating, storage cabinets and hand washing devices A combined toilet kit device, a system toilet device combining a wall material, a floor material, a ceiling material, and the like as a structure in the toilet room can be considered.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a siphon-jet toilet 10 according to an embodiment of the present invention, with a part of an upper surface thereof cut away.

FIG. 2 is an explanatory view showing a vertical cross section of the toilet 10;

FIG. 3 is a schematic sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is an explanatory diagram for explaining the behavior of rim shot cleaning water.

FIG. 5 is an explanatory diagram illustrating a surface treatment layer formed in a ball surface region 24b.

FIG. 6 is an explanatory diagram illustrating another surface treatment layer formed in a ball surface region 24b.

FIG. 7 is an explanatory view illustrating another surface treatment layer formed in a ball surface region 24b.

FIG. 8 is an explanatory diagram illustrating another surface treatment layer formed in a region 24b on the ball surface.

FIG. 9 is an explanatory diagram illustrating still another surface treatment layer formed in a region 24b of the ball surface.

FIG. 10 is a schematic diagram schematically showing a state of dirt removal on the surface of the surface treatment layer.

FIG. 11 is a schematic view schematically showing a state of dirt removal on the surface of the surface treatment layer.

[Explanation of symbols]

 2-4 ... Surface treatment layer (glaze layer) 10 ... Siphon jet toilet 20 ... Ball part 21 ... Rim part 22 ... Zet spouting hole 23 ... Water surface 24 ... Exposed surface 24a ... Guide recess 24b ... Region (surface treatment layer formation) (Area) 25 ... Discharge port 26 ... Recess 31 ... Connection path 32 ... Up path 33 ... Down path 34 ... Weir 40 ... Wash water supply hole 41 ... Wash water supply path 41a ... Retention part 42 ... Branch hole 43 ... Rim supply path 44 ... Water discharge hole 45 ... Zet water supply hole 46 ... Zet water supply channel 70 ... Drainage socket 90 ... Drainage riser pipe 310 ... Washing water tank

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Noboru Niihara 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Touchi Kiki Co., Ltd. (72) Inventor Masaki Kitamura 2 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka 1-chome No.1-1 F-term (reference) 2D039 AC04 AD01 AD04 DB04

Claims (8)

[Claims] 1. A toilet bowl portion that forms a ball surface for receiving dirt and stores washing water as stored water even during non-washing time, and a flow of new wash water to the toilet bowl portion by a water flowing means. A flush toilet having a trap for discharging the stored water together with waste by the flushing means, wherein the flushing means causes the flushed water to swirl in a substantially horizontal direction along an upper edge of the ball surface. The toilet bowl portion has means for passing new washing water from the side of the upper edge, and the toilet bowl portion has an area where the washed washing water is transmitted along the ball surface while causing the swirling. A flush toilet characterized by having a surface treatment layer on a ball surface. 2. The flush toilet according to claim 1, wherein the surface treatment layer is formed by laminating a plurality of layers. 3. The flush toilet according to claim 2, wherein the outermost layer of the surface treatment layer has a function of preventing adhesion of dirt. 4. The flush toilet according to any one of claims 1 to 3, wherein the toilet bowl portion is configured to expose the surface treatment layer to the ball surface in a region exposed when the pool water is discharged. We also have a flush toilet. 5. The flush toilet according to claim 1, wherein the surface treatment layer exhibits hydrophilicity on its surface.
Flush toilet. 6. The flush toilet according to claim 1, wherein the surface treatment layer exhibits water repellency on its surface. 7. The flush toilet according to claim 5, wherein the surface treatment layer exhibits an antibacterial property that inhibits fungal growth on the surface thereof. 8. The flush toilet according to claim 1, wherein the surface treatment layer has a water repellency or a water repellency on the surface in a ball surface peripheral region at an upper edge portion of the ball surface. A flush toilet that exhibits hydrophilicity.