JP2021073395A - Water closet - Google Patents

Abstract

To provide a water closet in which a rim water discharge port is easily hidden and which improves good appearance while maintaining a washing performance of a bowl part.SOLUTION: A water closet 1 comprises: a bowl part 10 including a shelf part 6 which is formed at an upper edge 4a of a bowl-shaped excrement receiving surface 4, and a rim part 8 forming a rim inner wall surface 8a erected from an outer edge 6a of the shelf part; and rim water discharge parts 14, 16 and 22 configured to discharge water into the bowl part. The bowl part includes a front-side region F and a back-side region B that are formed at a front side and a back side of a center axis line X bisecting the bowl part in a longitudinal direction and extending in a lateral direction. The rim water discharge parts form one rim water discharge port, along all the circumference of the rim part, provided in the rim part of the bowl part and configured to discharge washing water. The rim water discharge port is provided in any one of right and left rim parts in the front-side region and configured to discharge washing water backwards. A region U1 at an upper side of the rim water discharge port on the rim inner wall surface is formed in a continuous belt shape over all the circumference of the bowl part.SELECTED DRAWING: Figure 2

Description

The present invention relates to a flush toilet, and more particularly to a flush toilet that is washed by washing water supplied from a washing water source and discharges filth.

Conventionally, as a flush toilet that is washed by the wash water supplied from the wash water source and discharges filth, for example, as described in Patent Document 1, a rim spout that discharges the wash water into the bowl portion is a bowl. It is known that the rim spout is arranged in the vicinity of the front end in the portion and the rim spout is arranged in the rear in the bowl portion as described in Patent Document 2.
Alternatively, for example, as described in Patent Document 3, the rim spout is arranged laterally in the bowl portion and at an intermediate position in the front-rear direction or behind it, and spouts water toward the rear in the bowl portion. Is also known.

JP-A-2007-314975 Japanese Unexamined Patent Publication No. 2016-41880 Japanese Patent No. 5592617

However, in the conventional flush toilets described in Patent Documents 1 to 3 described above, the peripheral shape of the rim spout tends to be complicated, so that the periphery of the rim spout is shadowed and has a design property. It is causing a decline.
In particular, in the conventional flush toilet described in Patent Document 1 described above, since the front region in the bowl portion where the rim spout is arranged has a complicated shape, it is used by sitting on the toilet seat and opening both legs slightly. There is a problem that it falls into the field of view of the person and causes a deterioration in design.
Further, in the conventional flush toilet described in Patent Documents 2 and 3 described above, since the rear region in the bowl portion where the rim spout is arranged has a complicated shape, whether to stand on the front side of the toilet body. There is a problem that it falls into the field of view of a crouching user and causes a deterioration in design.
Further, in the conventional flush toilets described in Patent Documents 1 to 3 described above, if only the design of the peripheral shape of the rim spout is emphasized too much, the bowl portion by the wash water discharged from the rim spout is used. It has become difficult to maintain the cleaning performance of the toilet, and how to achieve both cleaning performance and design has become a required issue.

Therefore, the present invention has been made to solve the above-mentioned problems and problems of the prior art, and it is easy to conceal the rim spout while maintaining the cleaning performance of the bowl portion, and the flushing size is excellent in aesthetics. The purpose is to provide a toilet bowl.

In order to solve the above-mentioned problems, the present invention is a water-washing toilet bowl that is washed with washing water supplied from a washing water source and discharges filth, and is on a bowl-shaped filth receiving surface and the filth receiving surface. It has a bowl portion provided with a shelf portion formed on the edge, a rim portion forming an inner wall surface of the rim rising from the outer edge of the shelf portion, and a rim water discharge portion for discharging washing water into the bowl portion. The bowl portion includes a front side region and a rear side region formed on the front side and the rear side, respectively, with respect to the central axis extending in the left-right direction that divides the bowl portion into two equal parts in the front-rear direction. The rim spouting portion is provided on the rim portion of the bowl portion to form one rim spouting port for discharging washing water on the entire circumference of the rim portion, and the rim spouting port is either left or right of the front side region. The washing water is discharged rearwardly from the rim portion of the above, and the region above the rim spout on the inner wall surface of the rim is formed in a continuous band shape over the entire circumference of the bowl portion. It is characterized by being washed.
In the present invention configured as described above, the rim spouting portion is provided on the rim portion of the bowl portion to form one rim spouting port for discharging the washing water on the entire circumference of the rim portion, and the rim spouting port is formed. , Since it is provided on either the left or right rim portion of the front side region and discharges the washing water rearward, the bowl portion can be cleaned while maintaining the cleaning performance of the bowl portion by the washing water discharged rearward from the rim spout. It is possible to make the rim spout difficult to see from the user in front of and above the portion.
Further, since the region above the single rim spout on the inner wall surface of the rim is formed in a continuous band shape over the entire circumference of the bowl portion, the rim spout can be easily concealed. , It is possible to provide a flush toilet with excellent aesthetics.
Further, as compared with the case where the rim spout is formed at the front end of the bowl portion, the front end of the bowl portion is less likely to have a complicated shape, and the aesthetic appearance can be improved.

In the present invention, preferably, the open end surface of the rim spout is set parallel to the central axis extending in the left-right direction.
Generally, the higher the concealment of the rim spout, the lower the visibility of the rim spout during cleaning. On the other hand, in the present invention, by setting the open end surface of the rim spout parallel to the central axis extending in the left-right direction of the bowl portion, the rim spout is concealed as seen from the user side in front of and above the bowl portion. While maintaining the properties, the line of sight is lowered to the vicinity of the bowl while crouching during cleaning, and the rim spout is easy to see when viewed from either the left or right side where the rim spout is not provided. Therefore, the cleaning property can be improved, for example, the cleaning tool can be easily applied to the rim spout.
Therefore, it is possible to achieve both concealment and cleanability of the rim spout.

In the present invention, preferably, the rim spouting portion forms a water passage on the downstream side of the rim spout, and the cross section of the flow path of the water passage rises from the shelf surface of the shelf portion and the outer edge of the shelf surface. It is formed by each of the inner wall surface of the rim and the overhang portion formed on the upper portion of the inner wall surface of the rim, and the overhang portion is inclined diagonally upward from the lower end thereof and toward the inside of the bowl portion. It forms an inclined surface.
In the present invention configured as described above, the rim spouting portion forms a water passage on the downstream side of the rim spout, and the cross section of the flow path of the water passage rises from the shelf surface of the shelf portion and the outer edge of the shelf surface. An inclined surface formed by each of the inner wall surface of the rim and the overhang portion formed on the upper portion of the inner wall surface of the rim, and the overhang portion is inclined diagonally upward from the lower end thereof and toward the inside of the bowl portion. Since it is formed, it is possible to maintain the concealing property of the rim spout as seen from the user side in front of and above the bowl portion. Furthermore, when the line of sight is lowered to the vicinity of the bowl while crouching during cleaning, the rim spout becomes easier to see, which makes it easier to apply the cleaning tool to the rim spout, further improving cleanability. be able to.
Therefore, it is possible to achieve both concealment and cleanability of the rim spout.

In the present invention, preferably, the distance in the front-rear direction from the front end of the bowl portion to the rim spout is 20% to 40% of the distance from the front end to the rear end of the bowl portion. Is provided on either the left or right rim portion of the front side region of the bowl portion.
In the present invention configured as described above, the distance in the front-rear direction from the front end of the bowl portion to the rim spout is 20% to 40% of the distance from the front end to the rear end of the bowl portion. By being provided on either the left or right rim portion of the front side region of the bowl portion, the bowl portion can be cleaned by the washing water discharged from the rim spout to the rear while maintaining the cleaning performance of the bowl portion in front of and behind the bowl portion. When viewed from the upper user side, the rim spout can be easily concealed, and a flush urinal with excellent aesthetics can be provided.
In addition, when the line of sight is lowered to the vicinity of the bowl while crouching during cleaning, the rim spout can be easily seen, so that the cleaning tool can be easily applied to the rim spout to improve cleaning performance. it can.
Therefore, it is possible to achieve both concealment and cleanability of the rim spout.

According to the flush toilet of the present invention, it is possible to easily conceal the rim spout while maintaining the cleaning performance of the bowl portion, and to make it excellent in aesthetics.

It is a central side sectional view of the toilet body of the flush toilet according to one Embodiment of this invention. It is a top view of the toilet body of the flush toilet according to one Embodiment of this invention. It is a perspective view of the toilet body of the flush toilet according to one Embodiment of this invention seen from the oblique rear. It is sectional drawing along the IV-IV line of FIG.

Next, a flush toilet according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
First, FIG. 1 is a central side sectional view of the toilet bowl body of the flush toilet according to the embodiment of the present invention, and FIG. 2 is a plan view of the toilet bowl body of the flush toilet according to the embodiment of the present invention.
Further, FIG. 3 is a perspective view of the toilet bowl body of the flush toilet according to the embodiment of the present invention when viewed from diagonally rearward, and FIG. 4 is a cross-sectional view taken along line IV-IV of FIG.

First, as shown in FIGS. 1 to 3, the flush toilet 1 according to the embodiment of the present invention includes a pottery body 2 made of earthenware. Further, the toilet bowl body 2 may be made of resin other than ceramics.
Here, in the flush toilet 1 of the present embodiment shown in FIGS. 1 to 3, a toilet seat and a toilet lid are provided on the upper surface of the toilet body 2, and a local part of the user is washed on the rear side thereof. Functional parts such as a sanitary cleaning part and a water supply system functional part related to the water supply function to the toilet bowl main body 2 are provided, but these are not shown and the description thereof will be omitted.

Further, as shown in FIGS. 1 and 2, the toilet bowl main body 2 has a bowl-shaped filth receiving surface 4, a shelf portion 6 formed on the upper edge 4a of the filth receiving surface 4, and an outer edge of the shelf portion 6. A bowl portion 10 including a rim portion 8 formed so as to rise from 6a is provided.
Further, as shown in FIG. 1, the toilet bowl main body 2 is provided with a drain trap pipeline 12 which is a drainage channel for discharging filth in the bowl portion 10 by connecting an inlet portion 12a below the bowl portion 10. ..

Here, in the flush stool 1 according to the embodiment of the present invention shown in FIGS. 1 and 2, the bowl portion 10 is horizontally divided into two equal parts in the front-rear direction in the plan view of the bowl portion 10 of the urinal body 2. The central axis extending in the left-right direction is indicated by "X", the central axis extending in the horizontal anteroposterior direction so as to divide the bowl portion 10 into two equal parts in the left-right direction is indicated by "Y", and the vertical direction passing through the center O of the bowl portion 10. The central axis extending to is indicated by "Z".
Further, as shown in FIG. 2, the front-back and left-right directions of the flush toilet 1 are indicated by "front", "rear", "left", and "right", respectively.
Then, as shown in FIGS. 1 and 2, the front side and the rear side of the flush toilet bowl 1 in the bowl portion 10 with respect to the center O, the central axis X in the horizontal and horizontal directions, and the central axis Z in the vertical direction, respectively. Is defined as "front side area F" and "rear side area B", respectively.
Further, as shown in FIG. 2, the “left side region L” is set for each of the left and right regions when viewed from the front with respect to the center O in the bowl portion 10 of the flush toilet 1 and the central axis Y in the horizontal anteroposterior direction. , "Right side area R" are defined respectively.

Next, as shown in FIGS. 1 to 3, a rim water passage 14 that functions as a part of the rim water discharge portion is formed inside the rim portion 8 of the right side region R in the front side region F of the bowl portion 10. Has been done.
Further, at the downstream end of the rim water passage 14, a single rim spout 16 that functions as a part of the rim spout portion that discharges wash water rearward to form a swirling flow is formed in the bowl portion 10. ing.
That is, the rim spouting portion is provided on the rim portion 8 of the bowl portion 10 to form one rim spouting port 16 for discharging washing water on the entire circumference of the rim portion 8, and the rim spouting port 16 is the bowl portion 10. It is provided in the rim portion 8 of the right side region R in the front side region F of the above and discharges the washing water rearward.
Further, as shown in FIG. 2, the upstream side of the rim water passage 14 is connected to the water pipe 18. The upstream side of the water pipe 18 is directly connected to a water supply (not shown) which is a washing water source, and the washing water supplied from the water pipe 18 into the rim water passage 14 by using the water supply pressure of this water pipe 18 is used. Is guided forward in the rim water passage 14, then bends inward and rearward, and is guided to the rim spout 16 on the downstream side.
Then, the washing water guided to the rim water discharge port 16 is discharged backward (rim water discharge), and by swirling in the bowl portion 10, a swirling flow is formed in the bowl portion 10. There is.
In the flush toilet bowl 1 of the present embodiment, the rim water passage 14 is provided inside the rim portion 8 of the right region R of the bowl portion 10, and the single rim spout 16 is provided in the bowl portion 10. The form formed on the inner peripheral side of the rim portion 8 of the front side region F and the right side region R will be described, but the present invention is not limited to such a form, and as another form, the rim water passage 14 is the left side region of the bowl portion 10. A single rim spout 16 is provided inside the rim portion 8 of the L, and a single rim spout 16 is provided on the inner peripheral side of the rim portion 8 of the front side region F and the left side region L of the bowl portion 10. It may be in a form in which water is discharged from 16 toward the rear (rim water discharge).

Further, as shown in FIG. 1, a jet spout 20 is formed at the bottom of the bowl portion 10 so as to be directed to the inlet portion 12a of the drain trap pipeline 12, and water is supplied from the jet spout 20 as well. Water discharge (jet water discharge) is performed from the system function unit (not shown).
In the flush toilet 1 according to the present embodiment, the rim water discharge by the rim water discharge port 16 is performed by using the water supply pressure of the tap water, and the pressure pump (not shown) is controlled for the jet water discharge by the jet water discharge port 20. The form of a so-called hybrid flush toilet that supplies wash water in a water storage tank (not shown) will be described, but the present invention is not limited to such a form, and other forms can also be applied. Further, the jet water discharge by the jet water discharge port 20 may be omitted.

Next, with reference to FIGS. 1 to 4, details of the rim spout 16 and the rim portion 8 of the bowl portion 10 of the flush toilet 1 according to the embodiment of the present invention will be described.
First, as shown in FIG. 2, a single rim spout 16 formed on the inner peripheral side of the rim portion 8 of the front side region F and the right side region R of the bowl portion 10 is formed from the front end 10a in the bowl portion 10. The front-rear distance Y1 to the rim spout 16 is provided at a position 30% of the distance Y2 from the front end 10a to the rear end 10b in the bowl portion 10.
Further, as shown in FIG. 2, the rim spout 16 is formed so that its opening end surface A1 is parallel to the central axis X extending in the left-right direction of the bowl portion 10.
As a result, it is possible to maintain the concealing property of the rim spout 16 as seen from the user side in front of and above the bowl portion 10. Further, when the line of sight is lowered to the vicinity of the bowl portion 10 while crouching during cleaning, the rim spout 16 is easily visible, so that the cleaning tool can be easily applied to the rim spout 16 to improve the cleaning property. It is possible to make it.
The distance Y1 in the front-rear direction from the front end 10a in the bowl portion 10 to the rim spout 16 is set to be 20% to 40% of the distance Y2 from the front end 10a to the rear end 10b in the bowl portion 10. It is preferable that it is set to 25% to 35%, and most preferably it is set to 25% to 35%.

Next, FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG.
As shown in FIGS. 1 to 4, a water passage 22 that also functions as a part of the rim water discharge portion is formed on the downstream side of the rim water discharge port 16.
Further, as shown in FIG. 4, regarding the flow path cross section A2 of the water passage 22, the shelf surface 6b of the shelf portion 6, the rim inner wall surface 8a rising from the vicinity of the outer edge 6a of the shelf surface 6b, and the rim inner wall surface 8a. It is formed by each of the overhang portions 8b formed in the upper portion of the.
Further, the overhang portion 8b forms an inclined surface S1 that is inclined obliquely upward from the lower end 8c and toward the inside of the bowl portion 10.

Further, as shown in FIGS. 1 to 4, the region U1 on the inner wall surface 8a of the rim above the rim spout 16 is formed in a continuous band shape over the entire circumference of the bowl portion 10.
The "belt shape" referred to here is, for example, a region that spreads flat over a wider range than the size of the rim spout 16 in the vertical direction.

Next, the operation of the flush toilet 1 according to the above-described embodiment of the present invention will be described.
First, according to the flush toilet bowl 1 according to the embodiment of the present invention, the rim spouting portion is provided on the rim portion 8 of the bowl portion 10 and the rim spouting port 16 for discharging the washing water is provided on the entire circumference of the rim portion 8. Since one rim spout 16 is provided in the rim portion 8 of the right region R in the front region F to discharge the washing water rearward, the rim spout 16 is discharged rearward. While maintaining the cleaning performance of the bowl portion 10 with the washing water, it is possible to make the rim spout 16 difficult to see from the user in front of and above the bowl portion 10 or the user sitting on the toilet seat (not shown). it can.
Further, since the region U1 on the inner wall surface 8a of the rim above the single rim spout 16 is formed in a continuous band shape over the entire circumference of the bowl portion 10, the rim spout 16 can be easily concealed. Therefore, it is possible to provide a flush toilet bowl 1 having excellent aesthetics.
Further, as compared with the case where the rim spout 16 is formed at the front end 10a of the bowl portion 10, the front end 10a of the bowl portion 10 is less likely to have a complicated shape, and the aesthetic appearance can be improved.

Next, in a normal design, the higher the concealment of the rim spout, the lower the visibility of the rim spout during cleaning. However, according to the flush urinal 1 according to the present embodiment, the opening end surface A1 of the rim spout 16 is set parallel to the central axis extending in the left-right direction of the bowl portion, so that the user is in front of and above the bowl portion. While maintaining the concealment of the rim spout 16 seen from the side, lower the line of sight to the vicinity of the bowl portion 10 while crouching during cleaning, and see from the side of either the left or right where the rim spout 16 is not provided. In such a case, since the rim spout 16 is easily visible, the cleaning tool can be easily applied to the rim spout 16 and the cleaning property can be improved.
Therefore, for example, when the opening end face is orthogonal to the discharge direction of the washing water discharged from the rim spout (when the opening end face is tilted rearward from the outside of the bowl portion toward the center side), the rim spout is concealed. Although the property is high, the rim spout is difficult to see unless the bowl portion is looked into from the rear side at the time of cleaning, and the cleanability is lowered. In this embodiment, the rim spout 16 is concealed and cleaned. It is possible to achieve both sex and sex.

Further, according to the flush toilet bowl 1 according to the present embodiment, a water passage 22 that also functions as a part of the rim water discharge portion is formed on the downstream side of the rim water discharge port 16, and the flow path cross section A2 of the water passage 22 is formed. Is formed by the shelf surface 6b of the shelf portion 6, the rim inner wall surface 8a rising from the vicinity of the outer edge 6a of the shelf surface 6b, and the overhang portion 8b formed on the upper portion of the rim inner wall surface 8a. .. Further, since the overhang portion 8b forms an inclined surface S1 obliquely upward from the lower end 8c and inclined toward the inside of the bowl portion 10, the overhang portion 8b is formed from the user side in front of and above the bowl portion 10. The concealment of the seen rim spout 16 can be maintained.
Further, when the line of sight is lowered to the vicinity of the bowl portion 10 in a posture such as crouching during cleaning, the rim spout 16 becomes easier to see, so that the cleaning tool can be easily applied to the rim spout 16 for cleaning. It can be improved further.
Therefore, both the concealing property and the cleaning property of the rim spout 16 can be achieved at the same time.

Further, according to the flush toilet bowl 1 according to the present embodiment, the distance Y1 in the front-rear direction from the front end 10a of the bowl portion 10 to the rim spout 16 is from the front end 10a to the rear end 10b of the bowl portion 10. By being provided in the rim portion 8 of the front side region F and the right side region R of the bowl portion 10 so as to be 20% to 40% of the distance Y2, the washing water discharged rearward from the rim spout port 16 is used. While maintaining the cleaning performance of the bowl portion 10, it is possible to easily conceal the rim spout 16 when viewed from the user side in front of and above the bowl portion 10, providing a flush toilet bowl with excellent aesthetics. can do.
Further, when the line of sight is lowered to the vicinity of the bowl portion 10 while crouching during cleaning, the rim spout 16 is easily visible, so that the cleaning tool can be easily applied to the rim spout 16 to improve the cleaning property. Can be made to.
Therefore, both the concealing property and the cleaning property of the rim spout 16 can be achieved at the same time.

1 Flush toilet 2 Toilet bowl body 4 Sewage receiving surface 4a Upper edge of sewage receiving surface 6 Shelf part 6a Outer edge of shelf part (shelf surface) 6b Shelf surface 8 Rim part 8a Rim inner wall surface 8b Overhang part 8c Lower end of overhang part 10 Bowl part 10a Front end of bowl part 10b Rear end of bowl part 12 Drain trap pipeline 12a Inlet part 14 Rim water passage (rim water discharge part)
16 Rim spout (rim spout)
18 Water pipe 20 Jet spout 22 Water passage (rim spout)
A1 Open end face of rim spout A2 Flow path cross section of water passage on the downstream side of rim spout B Rear area of bowl L Left side area of bowl F Front area of bowl O Center of bowl R Center of bowl Right area S1 Inclined surface of overhang part U1 Area above the rim spout on the inner wall surface of the rim X Horizontal central axis of the bowl part Y Horizontal central axis of the bowl part Y1 Rim discharge from the front end inside the bowl part Distance in the front-back direction to the water outlet Y2 Distance from the front end to the rear end in the bowl part Z Vertical central axis passing through the center of the bowl part

Claims (4)

A flush toilet that is washed with wash water supplied from a wash water source and discharges filth.
A bowl portion having a bowl-shaped filth receiving surface, a shelf portion formed on the upper edge of the filth receiving surface, and a rim portion forming an inner wall surface of a rim rising from the outer edge of the shelf portion.
It has a rim water spouting part that discharges washing water in the bowl part.
The bowl portion includes a front side region and a rear side region formed on the front side and the rear side, respectively, with respect to the central axis extending in the left-right direction which bisects the bowl portion in the front-rear direction.
The rim spouting portion is provided on the rim portion of the bowl portion to form one rim spouting port for discharging washing water on the entire circumference of the rim portion, and the rim spouting port is on either the left or right side of the front side region. It is provided on the above rim and discharges the washing water backward.
A flush toilet bowl characterized in that a region on the inner wall surface of the rim above the rim spout is formed in a continuous band shape over the entire circumference of the bowl portion. The flush toilet according to claim 1, wherein the opening end surface of the rim spout is set parallel to the central axis extending in the left-right direction. The rim spouting portion forms a water passage on the downstream side of the rim spout, and the cross section of the flow path of the water passage includes the shelf surface of the shelf portion, the inner wall surface of the rim rising from the outer edge of the shelf surface, and the rim water discharge portion. It is formed by each of the overhang parts formed on the upper part of the inner wall surface of this rim.
The flush toilet according to claim 1 or 2, wherein the overhang portion forms an inclined surface obliquely upward from the lower end thereof and inclined toward the inside of the bowl portion. The rim spout is located on the front side of the bowl so that the distance from the front end of the bowl to the rim spout in the front-rear direction is 20% to 40% of the distance from the front end to the rear end of the bowl. The flush toilet according to any one of claims 1 to 3, which is provided on the rim portion on either the left or right side of the area.

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