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JP6921379B2 - Toilet bowl device - Google Patents

Toilet bowl device Download PDF

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Publication number
JP6921379B2
JP6921379B2 JP2017058084A JP2017058084A JP6921379B2 JP 6921379 B2 JP6921379 B2 JP 6921379B2 JP 2017058084 A JP2017058084 A JP 2017058084A JP 2017058084 A JP2017058084 A JP 2017058084A JP 6921379 B2 JP6921379 B2 JP 6921379B2
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bowl
rim
shelf
region
bowl portion
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JP2018159246A (en
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周 頭島
周 頭島
理彰 桃枝
理彰 桃枝
祐紀 篠原
祐紀 篠原
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Toto Ltd
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Toto Ltd
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Description

本発明は、水洗大便器に係り、特に、洗浄水源から供給される洗浄水によって洗浄されて汚物を排出する水洗大便器に関する。 The present invention relates to a flush urinal, and more particularly to a flush urinal that is washed with wash water supplied from a wash water source and discharges filth.

従来から、水洗大便器として、ボウル部の側方中央部の少し後方側のリム部に第1リム吐水口が形成されると共に、ボウル部の後方側のリム部に第2リム吐水口が設けられており、これらの第1リム吐水口及び第2リム吐水口のそれぞれから洗浄水が吐水されるものが知られている(例えば、特許文献1参照)。
この種の水洗大便器においては、大便が最も付着しやすいボウル部の後端部を第2吐水口から吐水される洗浄水により洗浄することができる。
Conventionally, as a flush urinal, a first rim spout is formed in a rim portion slightly rearward of the lateral central portion of the bowl portion, and a second rim spout is provided in the rim portion on the rear side of the bowl portion. It is known that wash water is discharged from each of the first rim spout and the second rim spout (see, for example, Patent Document 1).
In this type of flush toilet, the rear end of the bowl, to which stool is most likely to adhere, can be washed with wash water spouted from the second spout.

特開2015−196960号公報Japanese Unexamined Patent Publication No. 2015-196960

上述した水洗大便器においては、例えば、節水化のために吐水される流量を減らす場合、吐水口から吐水される洗浄水の水勢が小さくなる懸念がある。吐水口をボウル部の後方側に配置し、吐水口から吐水される洗浄水の水勢が小さい場合、ボウル部の後端部は洗浄されるが、ボウル部の後端を経由した洗浄水が前方へ向かっても、ボウル部の前端に辿り着けない、あるいは、辿り着いても水勢が弱く前端を旋回しきれない懸念がある。また、例えば、リム部の全周における吐水口の数を複数でなく1つとし、吐水口をボウル部の後方側に配置する場合、その1つの吐水口から吐水される洗浄水のみにてボウル部の後端を経由しつつ、前端を旋回させなくてはならず、吐水される洗浄水の流量によっては、ボウル部の前端に辿り着けない、あるいは、辿り着いても水勢が弱く前端を旋回しきれない懸念がある。
ボウル部の前端に辿り着けない、あるいは、辿り着いても水勢が弱く前端を旋回しきれない場合、即ち、旋回性が低下する場合、ボウル部の前方側における洗浄性が低下する懸念がある。
In the above-mentioned flush toilet, for example, when the flow rate of water discharged for water saving is reduced, there is a concern that the water force of the wash water discharged from the spout may be reduced. If the spout is located on the rear side of the bowl and the wash water discharged from the spout is small, the rear end of the bowl is washed, but the wash water that has passed through the rear end of the bowl is forward. There is a concern that the front end of the bowl cannot be reached, or even if it reaches, the water force is weak and the front end cannot be completely turned. Further, for example, when the number of spouts on the entire circumference of the rim portion is one instead of a plurality and the spouts are arranged on the rear side of the bowl portion, the bowl is filled with only the washing water discharged from the one spout. The front end must be swiveled while passing through the rear end of the portion, and depending on the flow rate of the flush water discharged, the front end of the bowl portion cannot be reached, or even if it is reached, the water force is weak and the front end is swiveled. There are concerns that cannot be overwhelmed.
If the front end of the bowl portion cannot be reached, or if the water force is weak and the front end cannot be completely swiveled even if the bowl portion is reached, that is, if the swivelability is reduced, there is a concern that the cleanability on the front side of the bowl portion may be reduced.

本発明は、上述した問題を解決するためになされたものであり、汚物が付着し易いボウル部内の後方側領域について洗浄性を高めつつ、且つ、旋回性が低下することを抑制することが可能な水洗大便器を提供することを目的とする。 The present invention has been made to solve the above-mentioned problems, and it is possible to improve the cleanability of the rear region in the bowl portion to which dirt easily adheres and to suppress the deterioration of the swivelability. The purpose is to provide a clean flush toilet.

本発明は、洗浄水源から供給される洗浄水によって洗浄されて汚物を排出する水洗大便器であって、ボウル形状の汚物受け面と、この汚物受け面の上縁部に形成されるリム部と、を備えたボウル部と、このボウル部の下方に接続されて汚物を排出する排水路と、上記リム部に設けられて上記ボウル部内に洗浄水を吐水して旋回流を形成するリム吐水部と、を有し、上記ボウル部は、さらに、上記汚物受け面の上縁部と上記リム部の下端部との間に上記リム吐水部から周方向に形成され且つ上記リム吐水部から吐水された洗浄水を周方向に導く棚部を備えており、上記リム吐水部は、上記ボウル部の後方側領域の左右いずれかの上記リム部に設けられて洗浄水を上記ボウル部内の後端を経由した後に上記ボウル部の前方側領域へ向かうよう吐水する単一のリム吐水口を形成し、上記棚部の幅は、上記ボウル部の後方から側方につれて大きくなるように設定されている水洗大便器である。
The present invention is a flush toilet that is washed by washing water supplied from a washing water source and discharges filth, and has a bowl-shaped filth receiving surface and a rim portion formed on the upper edge of the filth receiving surface. A bowl portion provided with, a drainage channel connected below the bowl portion to discharge filth, and a rim water discharge portion provided in the rim portion to discharge washing water into the bowl portion to form a swirling flow. The bowl portion is further formed between the upper edge portion of the filth receiving surface and the lower end portion of the rim portion in the circumferential direction from the rim water discharge portion, and water is discharged from the rim water discharge portion. It is provided with a shelf portion that guides the cleaning water in the circumferential direction, and the rim water discharge portion is provided on either the left or right rim portion of the rear side region of the bowl portion to supply the cleaning water to the rear end in the bowl portion. A single rim spout is formed to discharge water toward the front area of the bowl after passing through, and the width of the shelf is set to increase from the rear of the bowl to the side. It is a toilet bowl.

このように構成された本発明においては、ボウル部の後方側領域の左右いずれかのリム部に設けられたリム吐水部のリム吐水口から後方に吐水された洗浄水は、棚部上に沿って流れることによりボウル部の周方向に導かれて旋回する流れ(旋回流)を形成する。この際、棚部の幅がボウル部の後方から側方につれて大きくなるように設定されているため、リム吐水口から後端へ向けて吐水された洗浄水は、ボウル部の後方の棚部に差し掛かると、幅が比較的小さい棚部からボウル部内の後方領域にスムーズに流れ込むことができる。また、ボウル部の側方の棚部に差し掛かると、幅が後方よりも大きいため、洗浄水が棚部から落ちにくく棚部上に沿ってより前方へ向かいやすくなる。したがって、汚物が付着し易いボウル部内の後方側領域について、洗浄性を高めつつ、旋回性が低下することを抑制することができる。 In the present invention configured as described above, the washing water discharged rearward from the rim spout of the rim spouting portion provided on either the left or right rim portion of the rear side region of the bowl portion is along the shelf portion. A flow (swirl flow) is formed in which the bowl portion is guided in the circumferential direction and swirls. At this time, since the width of the shelf is set to increase from the rear of the bowl to the side, the washing water discharged from the rim spout toward the rear end is sent to the shelf behind the bowl. When approaching, the shelves, which are relatively small in width, can smoothly flow into the rear region in the bowl portion. Further, when the bowl portion is approached to the side shelf portion, the width is larger than that of the rear portion, so that the washing water is less likely to fall from the shelf portion and is more likely to move forward along the shelf portion. Therefore, it is possible to improve the cleanability of the rear region in the bowl portion to which filth easily adheres and suppress the deterioration of the swirlability.

本発明は、好ましくは、上記ボウル部は、さらに、上記リム部の下端部と上記棚部の外縁部との間を曲面にて連結する外側連結部を備えており、この外側連結部の曲面の上下方向の曲率半径は、上記ボウル部の後方から側方につれて小さくなるように設定されている。 In the present invention, preferably, the bowl portion further includes an outer connecting portion that connects the lower end portion of the rim portion and the outer edge portion of the shelf portion with a curved surface, and the curved surface of the outer connecting portion. The radius of curvature in the vertical direction of the bowl portion is set to decrease from the rear to the side of the bowl portion.

このように構成された本発明においては、ボウル部が、さらに、リム部の下端部と棚部の外縁部との間を曲面にて連結する外側連結部を備えており、この外側連結部の曲面の上下方向の曲率半径がボウル部の側方から後方につれて大きくなるように設定されているため、リム吐水口から後端に向けて吐水された洗浄水がボウル部の後方の外側連結部に差し掛かると、外側連結部の曲面の上下方向の比較的大きな曲率半径で幅が比較的小さい棚部からボウル部内の後方領域にスムーズに流れ込むことができる。また、ボウル部の側方の棚部に差し掛かると、後方よりも幅が大きく且つ外側連結部の曲面の上下方向の曲率変形が後方よりも小さいため、洗浄水が棚部から落ちにくく棚部上に沿ってより前方へ向かいやすくなる。したがって、汚物が付着し易いとボウル部内の後方側領域について、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。 In the present invention configured as described above, the bowl portion further includes an outer connecting portion that connects the lower end portion of the rim portion and the outer edge portion of the shelf portion with a curved surface, and the outer connecting portion of the outer connecting portion. Since the radius of curvature of the curved surface in the vertical direction is set to increase from the side of the bowl to the rear, the wash water discharged from the rim spout toward the rear end is applied to the outer connecting portion behind the bowl. When approaching, the curved surface of the outer connecting portion can smoothly flow into the rear region in the bowl portion from the shelf portion having a relatively large radius of curvature in the vertical direction and a relatively small width. Further, when approaching the shelf on the side of the bowl, the width is wider than the rear and the curvature deformation of the curved surface of the outer connecting portion in the vertical direction is smaller than that on the rear, so that the washing water does not easily fall from the shelf. It becomes easier to go forward along the top. Therefore, if filth easily adheres to the bowl portion, it is possible to further improve the cleanability of the rear region in the bowl portion and further suppress the deterioration of the swivelability.

本発明は、好ましくは、上記ボウル部の中心に対して左右対称の位置における上記外側連結部の曲面の上下方向の曲率半径は、上記ボウル部の側方側領域の内の上記リム吐水口が形成されている一方側の領域の方が、上記リム吐水口が形成されていない他方側の領域よりも大きくなるように設定されている。 In the present invention, preferably, the radius of curvature of the curved surface of the outer connecting portion in the vertical direction at a position symmetrical with respect to the center of the bowl portion is determined by the rim spout in the lateral region of the bowl portion. The region on one side that is formed is set to be larger than the region on the other side where the rim spout is not formed.

このように構成された本発明においては、ボウル部の中心に対して左右対称の位置における外側連結部の曲面の上下方向の曲率半径について、ボウル部の側方側領域の内のリム吐水口が形成されている一方側の領域の方が、リム吐水口が形成されていない他方側の領域よりも大きくなるように設定されているため、リム吐水口から後端に向けて吐水された洗浄水がボウル部の側方側領域の一方側の領域から後方に差し掛かると、幅が比較的小さい棚部からボウル部内の後方領域にスムーズに流れ込むことができる。また、ボウル部の側方の棚部に差し掛かると、後方よりも幅が大きいため、洗浄水が棚部から落ちにくく棚部上に沿ってより前方へ向かいやすくなる。したがって、汚物が付着し易いボウル部内の後方側領域について、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。 In the present invention configured as described above, the rim spout in the lateral region of the bowl portion has a radius of curvature in the vertical direction of the curved surface of the outer connecting portion at a position symmetrical with respect to the center of the bowl portion. Since the area on one side that is formed is set to be larger than the area on the other side where the rim spout is not formed, the wash water discharged from the rim spout toward the rear end. When the bowl portion approaches the rear from one side region of the side region, the relatively small shelf portion can smoothly flow into the rear region in the bowl portion. Further, when the bowl portion is approached to the side shelf portion, the width is larger than that of the rear portion, so that the washing water is less likely to fall from the shelf portion and is more likely to move forward along the shelf portion. Therefore, it is possible to further improve the detergency of the rear region in the bowl portion to which the filth easily adheres, and further suppress the deterioration of the swivel property.

本発明は、好ましくは、上記ボウル部は、さらに、上記棚部の内縁部と上記汚物受け面の上縁部との間を曲面にて連結する内側連結部を備えており、この内側連結部の曲面の上下方向の曲率半径は、上記ボウル部の後方から側方につれて小さくなるように設定されている。 In the present invention, preferably, the bowl portion further includes an inner connecting portion that connects the inner edge portion of the shelf portion and the upper edge portion of the filth receiving surface with a curved surface, and the inner connecting portion. The radius of curvature of the curved surface in the vertical direction is set to decrease from the rear to the side of the bowl portion.

このように構成された本発明においては、ボウル部が、さらに、棚部の内縁部と汚物受け面の上縁部との間を曲面にて連結する内側連結部を備えており、この内側連結部の曲面の上下方向の曲率半径がボウル部の後方から側方につれて小さくなるように設定されているため、リム吐水口から後方に吐水された洗浄水がボウル部の後方の内側連結部に差し掛かると、この内側連結部の曲面の上下方向の比較的大きな曲率半径で幅が比較的小さい棚部からボウル部内の後方領域にスムーズに流れ込むことができる。また、ボウル部の側方の棚部に差し掛かると、後方よりも幅が大きく且つ内側連結部の曲面の上下方向の曲率半径が小さいため、洗浄水が棚部から落ちにくく棚部上に沿ってより前方へ向かいやすくなる。したがって、汚物が付着し易いボウル部内の後方側領域について、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。 In the present invention configured as described above, the bowl portion further includes an inner connecting portion that connects the inner edge portion of the shelf portion and the upper edge portion of the filth receiving surface with a curved surface, and the inner connecting portion is provided. Since the radius of curvature in the vertical direction of the curved surface of the portion is set to decrease from the rear of the bowl portion to the side, the washing water discharged rearward from the rim spout is inserted into the inner connecting portion behind the bowl portion. When hooked, the curved surface of the inner connecting portion can smoothly flow into the rear region in the bowl portion from the shelf portion having a relatively large radius of curvature in the vertical direction and a relatively small width. In addition, when approaching the shelf on the side of the bowl, the width is wider than the rear and the radius of curvature of the curved surface of the inner connecting portion in the vertical direction is small, so that the washing water does not easily fall from the shelf and runs along the shelf. It becomes easier to go forward. Therefore, it is possible to further improve the detergency of the rear region in the bowl portion to which the filth easily adheres, and further suppress the deterioration of the swivel property.

本発明は、好ましくは、上記棚部は、上記ボウル部内の外側から内側に向かって下り傾斜する傾斜面を備えており、この傾斜面の傾斜角度は、上記ボウル部の後方から側方に位置するにつれて小さくなるように設定されている。 In the present invention, preferably, the shelf portion has an inclined surface that inclines downward from the outside to the inside of the bowl portion, and the inclination angle of the inclined surface is located from the rear to the side of the bowl portion. It is set to become smaller as it is used.

このように構成された本発明においては、棚部がボウル部内の外側から内側に向かって下り傾斜する傾斜面を備えており、この傾斜面の傾斜角度がボウル部の後方から側方に位置するにつれて小さくなるように設定されているため、リム吐水口から後端へ向けて吐水された洗浄水がボウル部の後方の棚部の傾斜面に差し掛かると、傾斜角度が比較的大きく幅が比較的小さい棚部からボウル部内の後方領域にスムーズに流れ込むことができる。また、ボウル部の側方の棚部に差し掛かると、後方よりも幅が大きく且つ傾斜角度が小さいため、洗浄水が棚部から落ちにくく棚部上に沿ってより前方へ向かいやすくなる。したがって、汚物が付着し易いボウル部内の後方側領域について、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。 In the present invention configured as described above, the shelf portion has an inclined surface that inclines downward from the outside to the inside of the bowl portion, and the inclination angle of this inclined surface is located from the rear to the side of the bowl portion. Since it is set to become smaller as the bowl is set, when the wash water discharged from the rim spout toward the rear end reaches the inclined surface of the shelf behind the bowl, the inclination angle is relatively large and the width is compared. It can flow smoothly from a small shelf to the rear area inside the bowl. Further, when the bowl portion is approached to the side shelf portion, the width is larger and the inclination angle is smaller than that of the rear portion, so that the washing water is less likely to fall from the shelf portion and is more likely to move forward along the shelf portion. Therefore, it is possible to further improve the detergency of the rear region in the bowl portion to which the filth easily adheres, and further suppress the deterioration of the swivel property.

本発明の水洗大便器によれば、汚物が付着し易いボウル部内の後方側領域について洗浄性を高めつつ、且つ、旋回性が低下することを抑制することが可能となる。 According to the water-washing toilet bowl of the present invention, it is possible to improve the cleanability of the rear region in the bowl portion to which filth is likely to adhere, and to suppress the deterioration of the swirlability.

本発明の一実施形態による水洗大便器の便器本体の中央側面断面図。A central side sectional view of a toilet bowl body of a flush toilet according to an embodiment of the present invention. 本発明の一実施形態による水洗大便器の便器本体の平面図。The plan view of the toilet body of the flush toilet according to one Embodiment of this invention. 図2のA1−A1線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line A1-A1 of FIG. 図2のA2−A2線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line A2-A2 of FIG. 図2のB1−B1線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line B1-B1 of FIG. 図2のB2−B2線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line B2-B2 of FIG. 図2のC1−C1線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line C1-C1 of FIG. 図2のC2−C2線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line C2-C2 of FIG. 図2のD−D線に沿った断面図。FIG. 2 is a cross-sectional view taken along the line DD of FIG.

以下、図面を参照して本発明の一実施形態による水洗大便器について説明する。
まず、図1及び図2により本発明の一実施形態による水洗大便器の構成について説明する。図1は本発明の一実施形態による水洗大便器の便器本体の中央側面断面図であり、図2は本発明の一実施形態による水洗大便器の便器本体の平面図である。
Hereinafter, a flush toilet according to an embodiment of the present invention will be described with reference to the drawings.
First, the configuration of the flush toilet according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. 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.

図1及び図2に示すように、本発明の一実施形態による水洗大便器1は、陶器製の便器本体2を備えている。
なお、図1及び図2に示す本実施形態の水洗大便器1においては、便器本体2の上面に便座及び便蓋が設けられていると共に、その後方側には、使用者の局部を洗浄する衛生洗浄部や便器本体2への給水機能に関与する給水系機能部等の機能部等が設けられているが、これらについては図示せず、説明を省略する。
As shown in FIGS. 1 and 2, the flush toilet bowl 1 according to the embodiment of the present invention includes a pottery bowl body 2 made of earthenware.
In the flush toilet bowl 1 of the present embodiment shown in FIGS. 1 and 2, a toilet seat and a toilet lid are provided on the upper surface of the toilet bowl main 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.

また、図1及び図2に示すように、便器本体2は、ボウル形状の汚物受け面4と、この汚物受け面4の上縁部に形成される棚部6と、この棚部6の外縁部から立ち上がるように形成されたリム部8とからなるボウル部10を備えている。
さらに、図1に示すように、便器本体2は、ボウル部10の下方に入口部12aが接続されて、ボウル部10内の汚物を排出する排水路である排水トラップ管路12を備えている。
ここで、図1及び図2に示す本発明の第1実施形態による水洗大便器1においては、便器本体2のボウル部10の平面視における水平左右方向の中心軸線を「X」で示し、水平前後方向の中心軸線を「Y」で示し、ボウル部10の中心Oを通る鉛直方向の中心軸線「Z」で示している。
また、図2に示すように、水洗大便器1の前後左右の方向については、「前」、「後」、「左」、「右」でそれぞれ示している。
そして、図1及び図2に示すように、水洗大便器1のボウル部10における中心O、水平左右方向の中心軸線X、及び鉛直方向の中心軸線Zに対して、前方側、後方側のそれぞれの領域について、「前方側領域F」、「後方側領域B」とそれぞれ定義している。
さらに、図2に示すように、水洗大便器1のボウル部10における中心O、水平前後方向の中心軸線Yに対して、前方から見て左側、右側のそれぞれの領域について、「左側領域L」、「右側領域R」とそれぞれ定義している。
Further, as shown in FIGS. 1 and 2, the toilet bowl main body 2 has a bowl-shaped filth receiving surface 4, a shelf 6 formed on the upper edge of the filth receiving surface 4, and an outer edge of the shelf 6. A bowl portion 10 including a rim portion 8 formed so as to rise from the portion 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 toilet bowl 1 according to the first embodiment of the present invention shown in FIGS. 1 and 2, the central axis in the horizontal and horizontal directions in the plan view of the bowl portion 10 of the toilet bowl body 2 is indicated by “X” and is horizontal. The central axis in the front-rear direction is indicated by "Y", and the central axis in the vertical direction passing through the center O of the bowl portion 10 is indicated by "Z".
Further, as shown in FIG. 2, the front-back and left-right directions of the flush toilet bowl 1 are indicated by "front", "rear", "left", and "right", respectively.
Then, as shown in FIGS. 1 and 2, the center O in the bowl portion 10 of the flush toilet bowl 1, the central axis X in the horizontal and horizontal directions, and the central axis Z in the vertical direction are on the front side and the rear side, 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 side and right side regions when viewed from the front with respect to the center O in the bowl portion 10 of the flush toilet bowl 1 and the central axis Y in the horizontal anteroposterior direction. , "Right side area R" are defined respectively.

つぎに、図1及び図2に示すように、ボウル部10の後方側領域B内の左右の一方の側のリム部8、すなわち、便器本体2の前方から見てボウル部10の後方側領域B内の右側領域Rのリム部8の内周側には、ボウル部10内に洗浄水を後端部に向けて吐水して旋回流を形成するリム吐水部の一部である単一のリム吐水口14が形成されている。すなわち、この単一のリム吐水口14は、リム部8の内周側の全周における後方側領域B且つ右側領域Rの一部分に設けられたリム部8の全周における唯一の吐水口である。
また、リム吐水口14の上流側のリム通水路(図示せず)は、上流側が、導水管(図示せず)等を介して洗浄水源である水道(図示せず)等に接続されている。
さらに、ボウル部10の棚部6は、リム吐水口14から下流側に周方向に形成されており、リム吐水口14から後方に向けて吐水(リム吐水)された洗浄水が、棚部6上に沿って周方向に導かれるようになっている。
Next, as shown in FIGS. 1 and 2, the rim portion 8 on one of the left and right sides in the rear side region B of the bowl portion 10, that is, the rear side region of the bowl portion 10 when viewed from the front of the toilet bowl body 2. On the inner peripheral side of the rim portion 8 of the right side region R in B, a single portion of the rim spouting portion that forms a swirling flow by spouting wash water into the bowl portion 10 toward the rear end portion. The rim spout 14 is formed. That is, this single rim spout 14 is the only spout on the entire circumference of the rim portion 8 provided on the rear side region B and a part of the right side region R on the entire circumference of the inner peripheral side of the rim portion 8. ..
Further, the upstream side of the rim water passage (not shown) on the upstream side of the rim spout 14 is connected to a water service (not shown) or the like which is a washing water source via a water pipe (not shown) or the like. ..
Further, the shelf portion 6 of the bowl portion 10 is formed in the circumferential direction from the rim spout port 14 to the downstream side, and the washing water discharged from the rim spout port 14 to the rear (rim spout) is discharged from the shelf portion 6. It is designed to be guided in the circumferential direction along the top.

なお、本実施形態の水洗大便器1においては、リム吐水口14が便器本体2の前方から見てボウル部10の後方側領域B内の右側のリム部8の内周側に形成された形態について説明するが、このような形態に限られず、単一のリム吐水口14については、ボウル部10の後方側領域Bの左右いずれかのリム部8の内周側に設けられていて、かつリム吐水口14からボウル部10の後端を経由した後にボウル部10の前方側領域F内に向けて吐水(リム吐水)されるような形態であればよい。例えば、後方側領域B内の中心軸線Yと中心軸線Xとの間において、中心軸線Yと中心軸線Xとの間の中心より中心軸線Y側にリム吐水口が形成され、中心軸線Yとボウル部20との交点を目掛けて中心軸線Xが延びる方向と同じ方向にリム吐水を行ってもよい。 In the flush toilet bowl 1 of the present embodiment, the rim spout 14 is formed on the inner peripheral side of the right rim portion 8 in the rear side region B of the bowl portion 10 when viewed from the front of the toilet bowl body 2. However, the present invention is not limited to such a form, and the single rim spout 14 is provided on the inner peripheral side of either the left or right rim portion 8 of the rear side region B of the bowl portion 10. The form may be such that water is discharged from the rim spout 14 through the rear end of the bowl 10 and then toward the front region F of the bowl 10 (rim spout). For example, between the central axis Y and the central axis X in the rear side region B, a rim spout is formed on the central axis Y side from the center between the central axis Y and the central axis X, and the central axis Y and the bowl The rim water may be discharged in the same direction as the central axis X extends toward the intersection with the portion 20.

さらに、図1に示すように、ボウル部10の底部には、排水トラップ管路12の入口部12aに差し向けられるようにジェット吐水口16が形成されており、このジェット吐水口16からも給水系機能部(図示せず)からの吐水(ジェット吐水)が行われるようになっている。
なお、本実施形態による水洗大便器1においては、リム吐水口14によるリム吐水について水道の給水圧力を利用して行い、ジェット吐水口16によるジェット吐水について加圧ポンプ(図示せず)を制御することにより貯水タンク(図示せず)内の洗浄水を供給する、いわゆる、ハイブリット式の水洗大便器の形態について説明するが、このような形態に限られず、他の形態についても適用可能である。また、ジェット吐水口16によるジェット吐水について省略した形態であってもよい。
Further, as shown in FIG. 1, a jet spout 16 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 also supplied from the jet spout 16. Water discharge (jet water discharge) is performed from the system function unit (not shown).
In the flush toilet bowl 1 according to the present embodiment, the rim water discharge by the rim water discharge port 14 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 16. The form of the so-called hybrid type flush toilet that supplies the flush water in the water storage tank (not shown) will be described, but the present invention is not limited to such a form and can be applied to other forms. Further, the jet water discharge by the jet water discharge port 16 may be omitted.

つぎに、図1〜図9を参照して、本発明の一実施形態による水洗大便器1のボウル部10の汚物受け面4の上縁部からリム部8までの部分の詳細について説明する。
まず、図4は、図2のA1−A1線に沿った断面図(A1−A1断面図)であり、図5は、図2のA2−A2線に沿った断面図(A2−A2断面図)である。
つぎに、図6は、図2のB1−B1線に沿った断面図(B1−B1断面図)であり、図7は、図2のB2−B2線に沿った断面図(B2−B2断面図)である。
また、図8は、図2のC1−C1線に沿った断面図(C1−C1断面図)であり、図9は、図2のC2−C2線に沿った断面図(C2−C2断面図)である。
さらに、図10は、図2のD−D線に沿った断面図(D−D断面図)である。
ここで、本実施形態において、図6に示すB1−B1断面図及び図8に示すC1−C1断面図のそれぞれについては、図2に示す平面視の便器本体2におけるA1−A1線に沿った断面からボウル部10の中心Oを中心に周方向左回りに30°及び60°それぞれずらしたボウル部10の後方側領域Bの部分断面図である。
また、図7に示すB2−B2断面図、図9に示すC2−C2断面図、及び図10に示すD−D断面図のそれぞれについては、図2に示す平面視の便器本体2におけるA2−A2線に沿った断面からボウル部10の中心Oを中心に周方向右回りに30°、60°、及び90°それぞれずらしたボウル部10の後方側領域Bの部分断面図である。
Next, with reference to FIGS. 1 to 9, the details of the portion from the upper edge portion to the rim portion 8 of the waste receiving surface 4 of the bowl portion 10 of the flush toilet bowl 1 according to the embodiment of the present invention will be described.
First, FIG. 4 is a cross-sectional view (A1-A1 cross-sectional view) along line A1-A1 of FIG. 2, and FIG. 5 is a cross-sectional view (A2-A2 cross-sectional view) of FIG. 2 along line A2-A2. ).
Next, FIG. 6 is a cross-sectional view (B1-B1 cross-sectional view) along the B1-B1 line of FIG. 2, and FIG. 7 is a cross-sectional view (B2-B2 cross-sectional view) of FIG. 2 along the B2-B2 line. Figure).
8 is a cross-sectional view (C1-C1 cross-sectional view) along the C1-C1 line of FIG. 2, and FIG. 9 is a cross-sectional view (C2-C2 cross-sectional view) of FIG. 2 along the C2-C2 line. ).
Further, FIG. 10 is a cross-sectional view (DD cross-sectional view) along the DD line of FIG.
Here, in the present embodiment, each of the B1-B1 cross-sectional view shown in FIG. 6 and the C1-C1 cross-sectional view shown in FIG. 8 is along the A1-A1 line in the toilet bowl main body 2 in the plan view shown in FIG. It is a partial cross-sectional view of the rear side region B of the bowl portion 10 shifted counterclockwise by 30 ° and 60 ° in the circumferential direction about the center O of the bowl portion 10 from the cross section.
Further, with respect to each of the B2-B2 cross-sectional view shown in FIG. 7, the C2-C2 cross-sectional view shown in FIG. 9, and the DD cross-sectional view shown in FIG. It is a partial cross-sectional view of the rear side region B of the bowl portion 10 shifted clockwise by 30 °, 60 °, and 90 ° in the circumferential direction about the center O of the bowl portion 10 from the cross section along the A2 line.

まず、図1〜図9に示すように、棚部6は、ボウル部10内の外側から内側に向かって下り傾斜する傾斜面6aを備えており、図3〜図に示す棚部6の各傾斜面6aの各傾斜角度α1,α2,β1,β2,γ1,γ2,δは、ボウル部10の後方から側方に位置するにつれて小さくなるように設定されている(α1≦β1<γ1≦δ、α2≦β2<γ2<δ)。なお、α1やα2、及びB1−B1断面、B2−B2断面より前方側において、傾斜面6aの傾斜角度は0°となってもよい。 First, as shown in FIGS. 1 to 9, the shelf portion 6 includes an inclined surface 6a in the bowl portion 10 that inclines downward from the outside to the inside, and each of the shelf portions 6 shown in FIGS. 3 to 9 is provided. The inclination angles α1, α2, β1, β2, γ1, γ2, δ of the inclined surface 6a are set to become smaller as they are located from the rear to the side of the bowl portion 10 (α1 ≦ β1 <γ1 ≦ δ). , Α2 ≦ β2 <γ2 <δ). The inclination angle of the inclined surface 6a may be 0 ° on the front side of the α1 and α2, the B1-B1 cross section, and the B2-B2 cross section.

また、図2、図5及び図6に示すように、ボウル部10の中心Oに対して左右対称の位置における棚部6の傾斜面6aの傾斜角度β1,β2では、ボウル部10の側方側領域の内のリム吐水口14が形成されている一方側の領域(便器本体2を前方から見て右側領域R)の棚部6の傾斜面6aの傾斜角度β1の方が、リム吐水口14が形成されていない他方側の領域(便器本体2を前方から見て左側領域L)の棚部6の傾斜面6aの傾斜角度β2よりも大きくなるように設定されている(β1>β2)。
同様に、図7及び図8に示すように、ボウル部10の中心Oに対して左右対称の位置における棚部6の傾斜面6aの傾斜角度γ1,γ2では、ボウル部10の側方側領域の内のリム吐水口14が形成されている一方側の領域の棚部6の傾斜面6aの傾斜角度γ1の方が、リム吐水口14が形成されていない他方側の領域(便器本体2を前方から見て左側領域L)の棚部6の傾斜面6aの傾斜角度γ2よりも大きくなるように設定されている(γ1>γ2)。
Further, as shown in FIGS. 2, 5 and 6, at the inclination angles β1 and β2 of the inclined surface 6a of the shelf portion 6 at positions symmetrical with respect to the center O of the bowl portion 10, the side of the bowl portion 10 The inclination angle β1 of the inclined surface 6a of the shelf portion 6 in the one side region (the right region R when the toilet body 2 is viewed from the front) in which the rim spout 14 is formed in the side region is the rim spout. It is set to be larger than the inclination angle β2 of the inclined surface 6a of the shelf portion 6 in the region on the other side where 14 is not formed (the left region L when the toilet body 2 is viewed from the front) (β1> β2). ..
Similarly, as shown in FIGS. 7 and 8, at the inclination angles γ1 and γ2 of the inclined surface 6a of the shelf portion 6 at positions symmetrical with respect to the center O of the bowl portion 10, the lateral region of the bowl portion 10 The inclination angle γ1 of the inclined surface 6a of the shelf portion 6 of the one-sided region where the rim spouting port 14 is formed is the other side region (toilet bowl body 2) where the rim spouting port 14 is not formed. It is set so as to be larger than the inclination angle γ2 of the inclined surface 6a of the shelf portion 6 in the left side region L) when viewed from the front (γ1> γ2).

また、図3〜図9に示す棚部6の各傾斜面6aの余弦成分の長さに相当する棚部6の幅a1,a2,b1,b2,c1,c2,dは、ボウル部10の後方から側方につれて大きくなるように設定されている(a1>b1>c1≧d、a2>b2>c2>d)。 Further, the widths a1, a2, b1, b2, c1, c2, d of the shelf portion 6 corresponding to the length of the cosine component of each inclined surface 6a of the shelf portion 6 shown in FIGS. 3 to 9 are the bowl portions 10. It is set to increase from the rear to the side (a1> b1> c1 ≧ d, a2> b2> c2> d).

つぎに、図3〜図9に示すように、ボウル部10は、さらに、リム部8の下端部8aと棚部6の外縁部6bとの間を各曲面R1,R2,S1,S2,T1,T2,U1にて連結する外側連結部18を備えている。この外側連結部18の各曲面R1,R2,S1,S2,T1,T2,U1の立面視における上下方向の各曲率半径r1,r2,s1,s2,t1,t2,u1は、ボウル部10の後方から側方につれて小さくなるように設定されている(r1<s1<t1≦u1、r2<s2<t2<u1)。 Next, as shown in FIGS. 3 to 9, the bowl portion 10 further forms a curved surface R1, R2, S1, S2, T1 between the lower end portion 8a of the rim portion 8 and the outer edge portion 6b of the shelf portion 6. , T2, U1 to provide an outer connecting portion 18 to be connected. The radius of curvature r1, r2, s1, s2, t1, t2, u1 in the vertical direction in elevation view of each curved surface R1, R2, S1, S2, T1, T2, U1 of the outer connecting portion 18 is a bowl portion 10. It is set so that it becomes smaller from the rear to the side (r1 <s1 <t1 ≦ u1, r2 <s2 <t2 <u1).

つぎに、図2、図3及び図4に示すように、ボウル部10の中心Oに対して左右対称の位置における外側連結部18の各曲面R1,R2の各曲率半径r1,r2においては、ボウル部10の側方側領域の内のリム吐水口14が形成されている一方側の領域(便器本体2を前方から見て右側領域R)の曲率半径r1の方が、リム吐水口14が形成されていない他方側の領域(便器本体2を前方から見て左側領域L)の曲率半径r2よりも大きくなるように設定されている(r1>r2)。
同様に、図5及び図6に示すように、ボウル部10の中心Oに対して左右対称の位置における外側連結部18の各曲面S1,S2の各曲率半径s1,s2においては、ボウル部10の側方側領域の内のリム吐水口14が形成されている一方側の領域(便器本体2を前方から見て右側領域R)の曲率半径s1の方が、リム吐水口14が形成されていない他方側の領域(便器本体2を前方から見て左側領域L)の曲率半径s2よりも大きくなるように設定されている(s1>s2)。
また、同様に、図7及び図6に示すように、ボウル部10の中心Oに対して左右対称の位置における外側連結部18の各曲面T1,T2の各曲率半径t1,t2においては、ボウル部10の側方側領域の内のリム吐水口14が形成されている一方側の領域(便器本体2を前方から見て右側領域R)の曲率半径t1の方が、リム吐水口14が形成されていない他方側の領域(便器本体2を前方から見て左側領域L)の曲率半径t2よりも大きくなるように設定されている(t1>t2)。
Next, as shown in FIGS. 2, 3 and 4, the radius of curvature r1 and r2 of the curved surfaces R1 and R2 of the outer connecting portion 18 at positions symmetrical with respect to the center O of the bowl portion 10 The radius of curvature r1 of the region on one side (the region R on the right side when the toilet body 2 is viewed from the front) in which the rim spout 14 is formed in the lateral region of the bowl portion 10 has the rim spout 14. It is set to be larger than the radius of curvature r2 of the region on the other side that is not formed (the region L on the left side when the toilet body 2 is viewed from the front) (r1> r2).
Similarly, as shown in FIGS. 5 and 6, at the radius of curvature s1 and s2 of the curved surfaces S1 and S2 of the outer connecting portion 18 at positions symmetrical with respect to the center O of the bowl portion 10, the bowl portion 10 The rim spout 14 is formed in the radius of curvature s1 of the region on one side (the region R on the right side when the toilet body 2 is viewed from the front) in which the rim spout 14 is formed. It is set to be larger than the radius of curvature s2 of the region on the other side (the region L on the left side when the toilet body 2 is viewed from the front).
Similarly, as shown in FIGS. 7 and 6, at the radius of curvature t1 and t2 of the curved surfaces T1 and T2 of the outer connecting portion 18 at positions symmetrical with respect to the center O of the bowl portion 10, the bowl. The rim spout 14 is formed in the radius of curvature t1 of the region on one side (the region R on the right side when the toilet body 2 is viewed from the front) in which the rim spout 14 is formed in the lateral region of the portion 10. It is set to be larger than the radius of curvature t2 of the region on the other side (the region L on the left side when the toilet body 2 is viewed from the front).

つぎに、図3〜図9に示すように、ボウル部10は、さらに、棚部6の内縁部6cと汚物受け面4の上縁部4aとの間を各曲面R3,R4,S3,S4,T3,T4,U2にて連結する内側連結部20を備えている。この内側連結部20の各曲面R3,R4,S3,S4,T3,T4,U2の立面視における上下方向の各曲率半径r3,r4,s3,s4,t3,t4,u2は、ボウル部10の後方から側方につれて小さくなるように設定されている(r3<s3<t3<u2、r4<s4<t4<u2)。 Next, as shown in FIGS. 3 to 9, the bowl portion 10 further has curved surfaces R3, R4, S3, S4 between the inner edge portion 6c of the shelf portion 6 and the upper edge portion 4a of the waste receiving surface 4. , T3, T4, and U2 are provided as inner connecting portions 20. The vertical curvature radii r3, r4, s3, s4, t3, t4, u2 in the elevation view of each curved surface R3, R4, S3, S4, T3, T4, U2 of the inner connecting portion 20 are the bowl portion 10. It is set so that it becomes smaller from the rear to the side (r3 <s3 <t3 <u2, r4 <s4 <t4 <u2).

上述した本発明の一実施形態による水洗大便器1によれば、ボウル部10の後方側領域B内の左右の一方の側(右側領域R)のリム部8に設けられたリム吐水部のリム吐水口14から後端に向けて吐水された洗浄水は、棚部6上に沿って流れることによりボウル部10の周方向に導かれて旋回する流れ(旋回流)を形成する。
この際、図3〜図9に示すように、棚部6の幅a1,a2,b1,b2,c1,c2,dが、ボウル部10の後方から側方につれて大きくなるように設定されている(a1>b1>c1≧d、a2>b2>c2>d)ため、リム吐水口14から後方に吐水された洗浄水は、ボウル部10の後方の棚部6に差し掛かると、幅が比較的小さい棚部6からボウル部10内の後方側領域Bにスムーズに流れ込むことができる。また、ボウル部10の側方の棚部6に差し掛かると、幅が後方よりも大きいため、洗浄水が棚部6から落ちにくく棚部6上に沿ってより前方へ向かいやすくなる。
したがって、汚物が付着し易いボウル部10内の後方側領域Bについて、洗浄性を高めつつ、旋回性が低下することを抑制することができる。
According to the flush toilet bowl 1 according to the embodiment of the present invention described above, the rim of the rim water discharge portion provided on the rim portion 8 on one of the left and right sides (right region R) in the rear side region B of the bowl portion 10. The washing water discharged from the spout 14 toward the rear end flows along the shelf 6 and is guided in the circumferential direction of the bowl 10 to form a swirling flow (swirl flow).
At this time, as shown in FIGS. 3 to 9, the widths a1, a2, b1, b2, c1, c2d of the shelf portion 6 are set to increase from the rear to the side of the bowl portion 10. (A1>b1> c1 ≧ d, a2>b2>c2> d) Therefore, when the washing water discharged rearward from the rim spout 14 reaches the shelf 6 behind the bowl portion 10, the widths are compared. It is possible to smoothly flow from the small shelf portion 6 to the rear side region B in the bowl portion 10. Further, when the bowl portion 10 is approached to the side shelf portion 6, the width is larger than that of the rear portion, so that the washing water is less likely to fall from the shelf portion 6 and is more likely to move forward along the shelf portion 6.
Therefore, it is possible to improve the cleanability of the rear side region B in the bowl portion 10 to which the filth easily adheres, and to suppress the deterioration of the swivelability.

また、上述した本発明の一実施形態による水洗大便器1によれば、ボウル部10が、さらに、リム部8の下端部8aと棚部6の外縁部6bとの間を各曲面R1,R2,S1,S2,T1,T2,U1にて連結する外側連結部18を備えており、この外側連結部18の各曲面R1,R2,S1,S2,T1,T2,U1の上下方向の各曲率半径r1,r2,s1,s2,t1,t2,u1がボウル部10の後方から側方につれて小さくなるように設定されている(r1<s1<t1≦u1、r2<s2<t2<u1)ため、リム吐水口14から後端に向けて吐水された洗浄水がボウル部10の後方の外側連結部18に差し掛かると、特に、図9に示す外側連結部18の曲面U1の上下方向の比較的大きな曲率半径u1で比較的小さい幅dの棚部6からボウル部10内の後方側領域Bにスムーズに流れ込むことができる。また、ボウル部10の側方の棚部6に差し掛かると、後方よりも幅が大きく且つ外側連結部18の曲面の上下方向の曲率変形が後方よりも小さいため、洗浄水が棚部6から落ちにくく棚部6上に沿ってより前方へ向かいやすくなる。
したがって、汚物が付着し易いとボウル部10内の後方側領域Bについて、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。
Further, according to the water-washing stool 1 according to the embodiment of the present invention described above, the bowl portion 10 further has curved surfaces R1 and R2 between the lower end portion 8a of the rim portion 8 and the outer edge portion 6b of the shelf portion 6. , S1, S2, T1, T2, U1 are provided, and the curvatures of the curved surfaces R1, R2, S1, S2, T1, T2, U1 of the outer connecting portion 18 in the vertical direction are provided. Since the radius r1, r2, s1, s2, t1, t2, u1 is set to decrease from the rear to the side of the bowl portion 10 (r1 <s1 <t1 ≦ u1, r2 <s2 <t2 <u1). When the wash water discharged from the rim spout 14 toward the rear end reaches the outer connecting portion 18 behind the bowl portion 10, in particular, a vertical comparison of the curved surface U1 of the outer connecting portion 18 shown in FIG. It is possible to smoothly flow from the shelf portion 6 having a relatively small width d with a large radius of curvature u1 into the rear side region B in the bowl portion 10. Further, when approaching the shelf portion 6 on the side of the bowl portion 10, the width is larger than that of the rear portion and the curvature deformation of the curved surface of the outer connecting portion 18 in the vertical direction is smaller than that of the rear portion. It is hard to fall off and it becomes easier to move forward along the shelf 6.
Therefore, if filth easily adheres to the bowl portion 10, it is possible to further improve the cleanability of the rear side region B in the bowl portion 10 and further suppress the deterioration of the swivelability.

また、上述した本発明の一実施形態による水洗大便器1によれば、ボウル部10の中心Oに対して左右対称の位置における外側連結部18の各曲面R1,R2,S1,S2,T1,T2,U1の上下方向の各曲率半径r1,r2,s1,s2,t1,t2,u1について、ボウル部10の側方側領域の内のリム吐水口14が形成されている一方側の領域(便器本体2を前方から見て右側領域R)の方が、リム吐水口14が形成されていない他方側の領域(便器本体2を前方から見て左側領域)よりも大きくなるように設定されている(r1>r2、s1>s2、t1>t2)ため、リム吐水口14から後端に向けて吐水された洗浄水がボウル部10の側方側領域の一方側の領域(右側領域R且つ前方側領域F)から後方側領域Bに差し掛かると、幅が比較的小さい棚部6からボウル部10内の後方側領域Bにスムーズに流れ込むことができる。また、ボウル部10の側方の棚部6に差し掛かると、後方よりも幅が大きいため、洗浄水が棚部6から落ちにくく棚部6上に沿ってより前方へ向かいやすくなる。
したがって、汚物が付着し易いボウル部内の後方側領域Bについて、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。
Further, according to the flush toilet bowl 1 according to the embodiment of the present invention described above, the curved surfaces R1, R2, S1, S2, T1 of the outer connecting portion 18 at positions symmetrical with respect to the center O of the bowl portion 10. For each radius of curvature r1, r2, s1, s2, t1, t2, u1 in the vertical direction of T2, U1, one side region (1 side region) in which the rim spout 14 is formed in the lateral side region of the bowl portion 10 ( The area R on the right side when the toilet body 2 is viewed from the front is set to be larger than the area on the other side where the rim spout 14 is not formed (the area on the left side when the toilet body 2 is viewed from the front). (R1> r2, s1> s2, t1> t2), so that the wash water discharged from the rim spout 14 toward the rear end is on one side of the side region of the bowl portion 10 (right region R and When approaching the rear side region B from the front side region F), the toilet portion 6 having a relatively small width can smoothly flow into the rear side region B in the bowl portion 10. Further, when the bowl portion 10 is approached to the side shelf portion 6, the width is larger than that of the rear portion, so that the washing water is less likely to fall from the shelf portion 6 and is more likely to move forward along the shelf portion 6.
Therefore, it is possible to further improve the cleanability of the rear side region B in the bowl portion to which the filth easily adheres, and further suppress the deterioration of the swivelability.

また、上述した本発明の一実施形態による水洗大便器1によれば、ボウル部10が、さらに、棚部6の内縁部6cと汚物受け面4の上縁部4aとの間を各曲面R3,R4,S3,S4,T3,T4,U2にて連結する内側連結部20を備えており、この内側連結部20の各曲面R3,R4,S3,S4,T3,T4,U2の上下方向の各曲率半径r3,r4,s3,s4,t3,t4,u2がボウル部10の後方から側方につれて小さくなるように設定されている(r3<s3<t3<u2、r4<s4<t4<u2)ため、リム吐水口14から後方に吐水された洗浄水がボウル部10の後方の内側連結部20に差し掛かると、特に、図9に示す内側連結部20の曲面U2の上下方向の比較的大きな曲率半径u2で幅が比較的小さい棚部6からボウル部10内の後方側領域Bにスムーズに流れ込むことができる。また、ボウル部10の側方の棚部6に差し掛かると、後方よりも幅が大きく且つ内側連結部20の曲面の上下方向の曲率半径が小さいため、洗浄水が棚部6から落ちにくく棚部6上に沿ってより前方へ向かいやすくなる。
したがって、汚物が付着し易いボウル部内の後方側領域Bについて、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。
Further, according to the water-washing stool 1 according to the embodiment of the present invention described above, the bowl portion 10 further has a curved surface R3 between the inner edge portion 6c of the shelf portion 6 and the upper edge portion 4a of the filth receiving surface 4. , R4, S3, S4, T3, T4, U2 are provided, and each curved surface R3, R4, S3, S4, T3, T4, U2 of the inner connecting portion 20 is provided in the vertical direction. Each radius of curvature r3, r4, s3, s4, t3, t4, u2 is set to decrease from the rear to the side of the bowl portion 10 (r3 <s3 <t3 <u2, r4 <s4 <t4 <u2). Therefore, when the wash water discharged rearward from the rim spout 14 reaches the inner connecting portion 20 behind the bowl portion 10, in particular, the curved surface U2 of the inner connecting portion 20 shown in FIG. 9 is relatively in the vertical direction. The shelf portion 6 having a large radius of curvature u2 and a relatively small width can smoothly flow into the rear side region B in the bowl portion 10. Further, when the shelf portion 6 on the side of the bowl portion 10 is approached, the width is larger than that of the rear portion and the radius of curvature of the curved surface of the inner connecting portion 20 in the vertical direction is small, so that the washing water does not easily fall from the shelf portion 6 and the shelf. It becomes easier to move forward along the part 6.
Therefore, it is possible to further improve the cleanability of the rear side region B in the bowl portion to which the filth easily adheres, and further suppress the deterioration of the swivelability.

また、上述した本発明の一実施形態による水洗大便器1によれば、棚部6がボウル部10内の外側から内側に向かって下り傾斜する傾斜面6aを備えており、図3〜図9に示すように、棚部6の各傾斜面6aの各傾斜角度α1,α2,β1,β2,γ1,γ2,δが、ボウル部10の後方から側方に位置するにつれて小さくなるように設定されている(α1≦β1<γ1≦δ、α2≦β2<γ2<δ)ため、リム吐水口14から後方に吐水された洗浄水がボウル部10の側方から後方の棚部6の傾斜面6aに差し掛かると、特に、図9に示す傾斜角度δが比較的大きく幅dが比較的小さい棚部6からボウル部10内の後方側領域Bにスムーズに流れ込むことができる。また、ボウル部10の側方の棚部6に差し掛かると、後方よりも幅が大きく且つ傾斜角度が小さいため、洗浄水が棚部6から落ちにくく棚部6上に沿ってより前方へ向かいやすくなる。
したがって、汚物が付着し易いボウル部10内の後方側領域について、より洗浄性を高めつつ、旋回性が低下することをさらに抑制することができる。
Further, according to the water-washing stool 1 according to the embodiment of the present invention described above, the shelf portion 6 is provided with an inclined surface 6a in which the shelf portion 6 is inclined downward from the outside to the inside of the bowl portion 10, and FIGS. As shown in the above, the inclination angles α1, α2, β1, β2, γ1, γ2, δ of each inclined surface 6a of the shelf portion 6 are set to become smaller as they are located from the rear to the side of the bowl portion 10. (Α1 ≦ β1 <γ1 ≦ δ, α2 ≦ β2 <γ2 <δ), so that the wash water discharged rearward from the rim spout 14 is the inclined surface 6a of the shelf 6 rearward from the side of the bowl portion 10. In particular, the shelf portion 6 having a relatively large inclination angle δ and a relatively small width d shown in FIG. 9 can smoothly flow into the rear side region B in the bowl portion 10. Further, when approaching the shelf portion 6 on the side of the bowl portion 10, the width is larger and the inclination angle is smaller than that of the rear portion, so that the washing water is less likely to fall from the shelf portion 6 and heads further forward along the shelf portion 6. It will be easier.
Therefore, it is possible to further improve the cleanability of the rear region in the bowl portion 10 to which the filth easily adheres, and further suppress the deterioration of the swirlability.

1 水洗大便器
2 便器本体
4 汚物受け面
4a 汚物受け面の上縁部
6 棚部
6a 棚部の傾斜面
6b 棚部の外縁部
6c 棚部の内縁部
8 リム部
8a リム部の下端部
10 ボウル部
12 排水トラップ管路
12a 入口部
14 リム吐水口
16 ジェット吐水口
18 外側連結部
20 内側連結部
X ボウル部の水平左右方向の中心軸線
Y ボウル部の水平前後方向の中心軸線
Z ボウル部の中心を通る鉛直方向の中心軸線
B ボウル部の後方側領域
F ボウル部の前方側領域
L ボウル部の左側領域
O ボウル部の中心
R ボウル部の右側領域
1 Washing bowl 2 Toilet body 4 Sewage receiving surface 4a Upper edge of sewage receiving surface 6 Shelf 6a Inclined surface of shelf 6b Outer edge of shelf 6c Inner edge of shelf 8 Rim 8a Lower end of rim 10 Bowl part 12 Drain trap pipeline 12a Inlet part 14 Rim spout 16 Jet spout 18 Outer connection part 20 Inner connection part X Horizontal and horizontal center axis of bowl part Y Horizontal center axis of bowl part Z Bowl part Vertical central axis passing through the center B Rear area of the bowl F Front area of the bowl L Left area of the bowl O Center of the bowl R Right area of the bowl

Claims (5)

洗浄水源から供給される洗浄水によって洗浄されて汚物を排出する水洗大便器であって、
ボウル形状の汚物受け面と、この汚物受け面の上縁部に形成されるリム部と、を備えたボウル部と、
このボウル部の下方に接続されて汚物を排出する排水路と、
上記リム部に設けられて上記ボウル部内に洗浄水を吐水して旋回流を形成するリム吐水部と、を有し、
上記ボウル部は、さらに、上記汚物受け面の上縁部と上記リム部の下端部との間に上記リム吐水部から周方向に形成され且つ上記リム吐水部から吐水された洗浄水を周方向に導く棚部を備えており、
上記リム吐水部は、上記ボウル部の後方側領域の左右いずれかの上記リム部に設けられて洗浄水を上記ボウル部内の後端を経由した後に上記ボウル部の前方側領域へ向かうよう吐水する単一のリム吐水口を形成し、
上記棚部の幅は、上記ボウル部の後方から側方につれて大きくなるように設定されている水洗大便器。
A flush toilet that is washed by the wash water supplied from the wash water source and discharges filth.
A bowl portion having a bowl-shaped filth receiving surface and a rim portion formed on the upper edge portion of the filth receiving surface.
A drainage channel connected to the bottom of this bowl to drain filth,
It has a rim water discharge portion provided on the rim portion and discharges washing water into the bowl portion to form a swirling flow.
The bowl portion is further formed in the circumferential direction from the rim water discharge portion between the upper edge portion of the filth receiving surface and the lower end portion of the rim portion, and the washing water discharged from the rim water discharge portion is circumscribed. Equipped with a shelf that leads to
The rim water discharge portion is provided on either the left or right rim portion of the rear side region of the bowl portion, and discharges wash water toward the front side region of the bowl portion after passing through the rear end in the bowl portion. Forming a single rim spout,
A flush toilet in which the width of the shelf portion is set to increase from the rear of the bowl portion to the side.
上記ボウル部は、さらに、上記リム部の下端部と上記棚部の外縁部との間を曲面にて連結する外側連結部を備えており、この外側連結部の曲面の上下方向の曲率半径は、上記ボウル部の後方から側方につれて小さくなるように設定されている請求項1記載の水洗大便
器。
The bowl portion further includes an outer connecting portion that connects the lower end portion of the rim portion and the outer edge portion of the shelf portion with a curved surface, and the radius of curvature of the curved surface of the outer connecting portion in the vertical direction is The water-washing toilet bowl according to claim 1, wherein the bowl portion is set to become smaller from the rear side to the side.
上記ボウル部の中心に対して左右対称の位置における上記外側連結部の曲面の上下方向の曲率半径は、上記ボウル部の側方側領域の内の上記リム吐水口が形成されている一方側の領域の方が、上記リム吐水口が形成されていない他方側の領域よりも大きくなるように設定されている請求項2記載の水洗大便器。 The vertical radius of curvature of the curved surface of the outer connecting portion at a position symmetrical with respect to the center of the bowl portion is one side of the lateral region of the bowl portion on which the rim spout is formed. The flush toilet according to claim 2, wherein the region is set to be larger than the region on the other side where the rim spout is not formed. 上記ボウル部は、さらに、上記棚部の内縁部と上記汚物受け面の上縁部との間を曲面にて連結する内側連結部を備えており、この内側連結部の曲面の上下方向の曲率半径は、上記ボウル部の後方から側方につれて小さくなるように設定されている請求項1乃至3の何れか1項に記載の水洗大便器。 The bowl portion further includes an inner connecting portion that connects the inner edge portion of the shelf portion and the upper edge portion of the filth receiving surface with a curved surface, and the curvature of the curved surface of the inner connecting portion in the vertical direction. The water-washing toilet according to any one of claims 1 to 3, wherein the radius is set so as to decrease from the rear of the bowl portion to the side. 上記棚部は、上記ボウル部内の外側から内側に向かって下り傾斜する傾斜面を備えており、この傾斜面の傾斜角度は、上記ボウル部の後方から側方に位置するにつれて小さくなるように設定されている請求項1乃至4の何れか1項に記載の水洗大便器。 The shelf portion has an inclined surface that inclines downward from the outside to the inside of the bowl portion, and the inclination angle of the inclined surface is set so as to be located from the rear to the side of the bowl portion. The flush toilet according to any one of claims 1 to 4.
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