JP6495146B2

JP6495146B2 - Flush toilet

Info

Publication number: JP6495146B2
Application number: JP2015179523A
Authority: JP
Inventors: 康宏近藤; 幸満稲毛
Original assignee: Lixil Corp
Current assignee: Lixil Corp
Priority date: 2015-09-11
Filing date: 2015-09-11
Publication date: 2019-04-03
Anticipated expiration: 2035-09-11
Also published as: JP2017053177A

Description

本発明は、水洗大便器に関する。 The present invention relates to a flush toilet.

従来より、大便器の便鉢部内を洗浄するための洗浄方式に関して種々の検討がなされている。特許文献１には、ボウル状の汚物受け面の下方に形成された凹部と、リム部と、二つの吐水部と、を備え、二つの吐水部から吐水された洗浄水の主流が凹部に流入する水洗大便器が開示されている。一方で、このような水洗大便器には水資源の有効活用のためより少ない水量で洗浄できることが求められている。 Conventionally, various studies have been made on a cleaning method for cleaning the toilet bowl portion of a toilet. Patent Document 1 includes a concave portion formed below a bowl-shaped filth receiving surface, a rim portion, and two water discharge portions, and the main flow of cleaning water discharged from the two water discharge portions flows into the concave portion. A flush toilet is disclosed. On the other hand, such flush toilets are required to be able to be washed with a smaller amount of water in order to effectively use water resources.

特開２０１５−６７９５４号公報Japanese Patent Laying-Open No. 2015-67954

ところで、特許文献１の図１１には、二つのリム吐水部からの洗浄水の流入経路が示されている。この水洗大便器では、これらのリム吐水部からの主流は、便器平面視で凹部内の前側と右側とに偏って流れている。このため、便器正面視で凹部内の奥側や左側に付着した汚物の洗浄力が不足することが考えられる。また、主にトラップ入口方向への下方向の流れは主に主流で形成されているものの、便器正面視で凹部の左奥領域での下方向の流れが形成されにくく、浮遊性の汚物が滞留することも考えられる。
特に、少ない水量で洗浄する場合に、凹部内の水流や下方向の流れの偏りの影響は顕著になることが懸念される。 By the way, FIG. 11 of Patent Document 1 shows an inflow path of cleaning water from two rim water discharge portions. In this flush toilet, the main stream from these rim water spouting portions flows in a biased manner toward the front side and the right side in the recess in plan view of the toilet bowl. For this reason, it is thought that the cleaning power of the filth adhering to the back side and the left side in the recess is insufficient in the toilet front view. In addition, although the downward flow mainly toward the trap entrance is mainly formed in the mainstream, it is difficult to form a downward flow in the left back area of the recess in front view of the toilet, and stagnant filth remains It is also possible to do.
In particular, when washing is performed with a small amount of water, there is a concern that the influence of the deviation of the water flow in the recess and the downward flow becomes significant.

つまり、このような水洗大便器では、凹部内の水流や下方向の流れの偏りを抑制して洗浄力を高める工夫が必要となる。このような観点のもとで検討すると、特許文献１の水洗大便器は凹部内の水流や下方向の流れの偏りを改善するための特別な工夫がなされておらず、水洗大便器の凹部洗浄能力の面で改善の余地があった。 That is, in such a flush toilet, it is necessary to devise a technique for increasing the cleaning power by suppressing the deviation of the water flow in the recess and the downward flow. Considering this point of view, the flush toilet of Patent Document 1 is not specially devised to improve the flow of water in the recess and the downward flow bias. There was room for improvement in terms of ability.

本発明は、このような課題に鑑みてなされ、その目的は、凹部内の水流や下方向の流れの偏りを抑制して良好な凹部洗浄能力を得られる水洗大便器を提供することにある。 This invention is made | formed in view of such a subject, The objective is to provide the flush toilet which can suppress the bias | inclination of the water flow in a recessed part, or a downward flow, and can obtain favorable recessed part washing | cleaning capability.

上記課題を解決するために、本発明のある態様の水洗大便器は、便鉢部を有する便器本体を備える。便鉢部は、汚物を受けるための受け面部と、受け面部の上縁部に接続されるリム部と、受け面部の下縁部から下方に窪んで形成される凹部と、を有する。凹部は、平面視において、底辺が左右の側辺の後方に位置する三角形の左右の側辺に対応する左立壁及び右立壁と、底辺に対応する後立壁と、からなる三つの立壁によって区画され、リム部には、平面視において、凹部の側方に設けられる第１吐水口と、凹部の前方に設けられる第２吐水口と、凹部の後方に設けられる第３吐水口と、からなる三つの吐水口が設けられ、三つの吐水口は、リム部に沿って周方向の一方向に洗浄水を吐水し、三つの吐水口から吐出される洗浄水は、それぞれ三つの立壁に向かって落下して当該立壁に沿って流れる第１主流を形成するように、受け面部とリム部と三つの吐水口とが便鉢部の形状を構成する。 In order to solve the above-described problems, a flush toilet according to an aspect of the present invention includes a toilet body having a toilet bowl. The toilet bowl portion includes a receiving surface portion for receiving filth, a rim portion connected to the upper edge portion of the receiving surface portion, and a recessed portion formed to be recessed downward from the lower edge portion of the receiving surface portion. The concave portion is partitioned by three standing walls including a left standing wall and a right standing wall corresponding to the left and right sides of the triangle whose bottom side is located behind the left and right sides in plan view, and a rear standing wall corresponding to the bottom side. The rim portion includes a first water outlet provided on the side of the concave portion, a second water outlet provided in front of the concave portion, and a third water outlet provided behind the concave portion in plan view. There are two water outlets, and the three water outlets discharge cleaning water in one circumferential direction along the rim, and the cleaning water discharged from the three water outlets falls toward the three standing walls, respectively. And a receiving surface part, a rim | limb part, and three spouts comprise the shape of a toilet bowl part so that the 1st mainstream which flows along the said standing wall may be formed .

この態様によれば、三つの吐水口からリム部の内周面に沿って周方向の一方向側に吐出された三つの洗浄水が、それぞれリム部の内周面を洗浄すると共に凹部を洗浄することができる。 According to this aspect, the three cleaning waters discharged from the three water discharge ports along the inner peripheral surface of the rim portion in one circumferential direction wash the inner peripheral surface of the rim portion and also clean the recess. can do.

本発明によれば、良好な凹部洗浄能力を得られる水洗大便器を提供できる。 ADVANTAGE OF THE INVENTION According to this invention, the flush toilet which can acquire favorable recessed part washing | cleaning capability can be provided.

実施形態に係る水洗大便器の側面断面図である。It is side surface sectional drawing of the flush toilet bowl which concerns on embodiment. 実施形態に係る水洗大便器の平面図である。It is a top view of the flush toilet concerning an embodiment. 図１のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 変向部の周辺の水流を説明する模式図である。It is a schematic diagram explaining the water flow around a turning part. 凹部の中心軸を説明するための図である。It is a figure for demonstrating the central axis of a recessed part. 凹部の内縁を拡大して示す平面図である。It is a top view which expands and shows the inner edge of a recessed part. 便鉢部の中における洗浄水の流れ方を模式的に示す図である。It is a figure which shows typically how a wash water flows in a toilet bowl part. 便鉢部の中における洗浄水の流れる範囲を模式的に示す図である。It is a figure which shows typically the range through which the wash water flows in a toilet bowl part.

以下、本発明を好適な実施の形態をもとに図１から８を参照しながら説明する。各図面に示される同一または同等の構成要素、部材には、同一の符号を付するものとし、適宜重複した説明は省略する。また、各図面における部材の寸法は、理解を容易にするために適宜拡大、縮小して示される。また、各図面において実施の形態を説明する上で重要ではない部材の一部は省略して表示する。 Hereinafter, the present invention will be described based on preferred embodiments with reference to FIGS. The same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in the drawings, some of the members that are not important for describing the embodiment are omitted.

図１は本実施形態に係る水洗大便器１００の側面断面図であり、図２は水洗大便器１００の平面図である。図３は図１のＡ−Ａ線に沿った水平面で切断したときの水洗大便器１００の上面図である。
以下、図２に示す様に、水洗大便器１００の左右方向をＸ軸と、水洗大便器１００の前後方向をＹ軸、高さ方向をＺ軸と定める。Ｘ軸正方向を「右方向」、Ｘ軸負方向を「左方向」とする。また、左右の一方向を第１方向というとき、左右の他方向を第２方向という。実施の形態では、左方向を第１方向、右方向を第２方向としている。 FIG. 1 is a side sectional view of a flush toilet 100 according to the present embodiment, and FIG. 2 is a plan view of the flush toilet 100. FIG. 3 is a top view of the flush toilet 100 when cut along a horizontal plane along line AA in FIG.
Hereinafter, as shown in FIG. 2, the lateral direction of the flush toilet 100 is defined as the X axis, the longitudinal direction of the flush toilet 100 is defined as the Y axis, and the height direction is defined as the Z axis. The X axis positive direction is “right direction”, and the X axis negative direction is “left direction”. Also, when one direction on the left and right is referred to as the first direction, the other direction on the left and right is referred to as the second direction. In the embodiment, the left direction is the first direction and the right direction is the second direction.

（水洗大便器）
水洗大便器１００は、陶器を素材とする便器本体１０２を備える。便器本体１０２は、トイレ室の壁面１０に掛けた状態で取り付けられる壁掛け型便器である。便器本体１０２の上方には、図示しないが、局部洗浄装置等の温水洗浄用装置を収めたボックスや、ボックスに上下に回動可能に支持される便蓋及び便座が配置される。 (Flush toilet)
The flush toilet 100 includes a toilet body 102 made of ceramic. The toilet body 102 is a wall-mounted toilet that is attached in a state of being hung on the wall surface 10 of the toilet room. Above the toilet body 102, although not shown, a box containing a hot water cleaning device such as a local cleaning device, and a toilet lid and a toilet seat that are rotatably supported by the box are disposed.

（便器本体）
便器本体１０２は、便鉢部１１０、排水路管部１１２、周壁部１１４を有する。排水路管部１１２は、便鉢部１１０の下部に形成される。周壁部１１４は、便鉢部１１０や排水路管部１１２などの内部構造を遮蔽する。 (Toilet body)
The toilet body 102 includes a toilet bowl portion 110, a drainage channel portion 112, and a peripheral wall portion 114. The drainage pipe part 112 is formed in the lower part of the toilet bowl part 110. The peripheral wall portion 114 shields internal structures such as the toilet bowl portion 110 and the drainage channel portion 112.

排水路管部１１２は、便鉢部１１０との接続部分においてＵ字状の封水部１１６ｅを形成する。封水部１１６ｅには、常時、滞留水が溜められており、これにより排水路管部１１２の臭いを遮断する。封水部１１６ｅに落ちた汚物は、滞留水とともに洗浄水によって外部に押し出される。 The drainage pipe part 112 forms a U-shaped sealing part 116 e at the connection part with the toilet bowl part 110. In the sealed water part 116e, stagnant water is always stored, thereby blocking the odor of the drainage pipe part 112. The filth falling on the sealed water part 116e is pushed out together with the staying water by the washing water.

（便鉢部）
便鉢部１１０は、平面視にて左右寸法より前後寸法が大きくなるような楕円状に形成される。便鉢部１１０は、汚物を受けるための鉢状の受け面部１３０と、受け面部１３０の上縁部に接続されるとともに便鉢部１１０の上縁部を形成するリム部１０８と、受け面部１３０の下縁部から下方に窪んで形成される凹部１１６とを備える。受け面部１３０は、中心側に向けて下り勾配で傾斜するように形成される。凹部１１６は有底状に形成され、その底部１１６ｋには封水部１１６ｅの入口が開口する。凹部１１６には滞留水の一部が溜められる。凹部１１６については後述する。 (Toilet bowl)
The toilet bowl 110 is formed in an elliptical shape whose front-rear dimension is larger than the left-right dimension in plan view. The toilet bowl part 110 includes a bowl-shaped receiving surface part 130 for receiving filth, a rim part 108 connected to the upper edge part of the receiving surface part 130 and forming the upper edge part of the toilet bowl part 110, and the receiving surface part 130. And a recess 116 formed to be depressed downward from the lower edge portion. The receiving surface part 130 is formed so as to incline with a downward slope toward the center side. The recessed portion 116 is formed in a bottomed shape, and an inlet of the sealed portion 116e is opened in the bottom portion 116k. A portion of the accumulated water is stored in the recess 116. The recess 116 will be described later.

（中心軸）
図５は凹部１１６の中心軸Ｍ１と、凹部１１６の形状とを説明する図である。凹部１１６は、平面視において、左右の側辺が共有する頂点に対応する前端部１１６ｆを有する。凹部１１６の左右範囲Ｌｘを左右に二等分して前後方向に延伸する直線を中心軸Ｍ１と表記する。また、前端部１１６ｆを通り左右方向に延伸する直線を直線Ｎ１と表記する。中心軸Ｍ１と直線Ｎ１との交点を点Ｐと表記する。凹部１１６の左立壁２０には左端２０ａが位置し、右立壁２２には右端２２ａが位置する。図５では、前端部１１６ｆが中心軸Ｍ１に位置する。 (Center axis)
FIG. 5 is a diagram for explaining the central axis M1 of the recess 116 and the shape of the recess 116. The concave portion 116 has a front end portion 116f corresponding to a vertex shared by the left and right sides when seen in a plan view. A straight line extending in the front-rear direction by dividing the left-right range Lx of the concave portion 116 into two equal parts is denoted as a central axis M1. A straight line extending in the left-right direction through the front end portion 116f is denoted as a straight line N1. An intersection point of the central axis M1 and the straight line N1 is denoted as a point P. A left end 20 a is located on the left standing wall 20 of the recess 116, and a right end 22 a is located on the right standing wall 22. In FIG. 5, the front end portion 116f is located on the central axis M1.

便鉢部１１０は、平面視において、中心軸Ｍ１と直線Ｎ１とで区分けされる四つの分割領域Ｓｒ１〜Ｓｒ４を有する。以下、四つの分割領域のうち、直線Ｎ１に対して後側であって、中心軸Ｍ１に対して、左側の分割領域を第１分割領域Ｓｒ１、右側の分割領域を第４分割領域Ｓｒ４とする。直線Ｎ１に対して前側であって、中心軸Ｍ１に対して、左側の分割領域を第２分割領域Ｓｒ２、右側の分割領域を第３分割領域Ｓｒ３とする。 The toilet bowl part 110 has four division area Sr1-Sr4 divided by the central axis M1 and the straight line N1 in planar view. Hereinafter, among the four divided regions, the left divided region is the first divided region Sr1 and the right divided region is the fourth divided region Sr4 with respect to the central axis M1. . The left divided region is the second divided region Sr2 and the right divided region is the third divided region Sr3, which is the front side with respect to the straight line N1 and the central axis M1.

（リム導水路）
図３に示すように、リム部１０８には、主に左方に設けられる第１リム導水路１２４ａと、主に右方に設けられる第２リム導水路１２４ｂと、主に左後方に設けられる第３リム導水路１２４ｃの三つの導水路が形成される。第１リム導水路１２４ａと、第２リム導水路１２４ｂと、第３リム導水路１２４ｃの三つの導水路を総称するときは「導水路１２４」という。 (Rim headrace)
As shown in FIG. 3, the rim portion 108 is provided mainly with a first rim conduit 124a provided on the left side, a second rim conduit 124b provided mainly on the right side, and mainly on the left rear. Three water conduits of the third rim water conduit 124c are formed. The three conduits of the first rim conduit 124a, the second rim conduit 124b, and the third rim conduit 124c are collectively referred to as “conduct 124”.

（吐水口）
リム部１０８には、第１吐水口１２２ａと、第２吐水口１２２ｂと、第３吐水口１２２ｃの三つの吐水口が形成される。第１吐水口１２２ａと、第２吐水口１２２ｂと、第３吐水口１２２ｃの三つの吐水口を総称するときは「吐水口１２２」という。吐水口１２２については後述する。吐水口１２２は導水路１２４に形成され後述するリム通水路１２０に連続するようにリム通水路１２０に向けて開口している。 (Water outlet)
The rim portion 108 is formed with three water discharge ports, a first water discharge port 122a, a second water discharge port 122b, and a third water discharge port 122c. The three water outlets of the first water outlet 122a, the second water outlet 122b, and the third water outlet 122c are collectively referred to as “water outlet 122”. The water outlet 122 will be described later. The water outlet 122 is formed in the water conduit 124 and opens toward the rim water passage 120 so as to be continuous with the rim water passage 120 described later.

第１吐水口１２２ａは第１リム導水路１２４ａの下流端に設けられ、第２吐水口１２２ｂは第２リム導水路１２４ｂの下流端に設けられ、第３吐水口１２２ｃは第３リム導水路１２４ｃの下流端に設けられる。 The first water outlet 122a is provided at the downstream end of the first rim water conduit 124a, the second water outlet 122b is provided at the downstream end of the second rim water conduit 124b, and the third water outlet 122c is the third rim water conduit 124c. At the downstream end.

図１に示すように、洗浄水供給装置の一部となる給水管１０４から供給される洗浄水は、流入路３８ａと導水路３８ｂとを通じてリム導水路１２４のそれぞれに供給される。リム導水路１２４に供給された洗浄水は、吐水口１２２から後述するリム通水路１２０に向けて吐水される。吐水された洗浄水はリム通水路１２０に沿って周方向に旋回する。以下、洗浄水の周方向に旋回する方向を単に「旋回方向」と表記する。 As shown in FIG. 1, the cleaning water supplied from the water supply pipe 104 that is a part of the cleaning water supply device is supplied to each of the rim water conduits 124 through the inflow channel 38a and the water channel 38b. The cleaning water supplied to the rim water conduit 124 is discharged from the water outlet 122 toward the rim water passage 120 described later. The discharged wash water turns in the circumferential direction along the rim water passage 120. Hereinafter, the direction of turning in the circumferential direction of the cleaning water is simply referred to as “turning direction”.

（リム通水路）
リム部１０８には、三つの吐水口１２２のそれぞれから便鉢部１１０の周方向に延びるように形成される第１リム通水路１２０ａ、第２リム通水路１２０ｂ及び第３リム通水路１２０ｃが形成される。三つのリム通水路１２０ａ、１２０ｂ及び１２０ｃを総称するときは「リム通水路１２０」という。 (Rim waterway)
A first rim water passage 120a, a second rim water passage 120b, and a third rim water passage 120c are formed in the rim portion 108 so as to extend from each of the three water outlets 122 in the circumferential direction of the toilet bowl portion 110. Is done. The three rim water passages 120a, 120b and 120c are collectively referred to as “rim water passage 120”.

第１リム通水路１２０ａは、第１吐水口１２２ａから旋回方向下流側に第２吐水口１２２ｂの近傍まで周方向に延設される。第２リム通水路１２０ｂは、第２吐水口１２２ｂから旋回方向下流側に第３吐水口１２２ｃの近傍まで周方向に延設される。第３リム通水路１２０ｃは、第３吐水口１２２ｃから旋回方向下流側に第１吐水口１２２ａの近傍まで周方向に延設される。第１リム通水路１２０ａと第２リム通水路１２０ｂと第３リム通水路１２０ｃとは一部がつながっていてもよい。 The first rim water passage 120a extends in the circumferential direction from the first water outlet 122a to the vicinity of the second water outlet 122b on the downstream side in the turning direction. The second rim water passage 120b extends in the circumferential direction from the second water outlet 122b to the vicinity of the third water outlet 122c on the downstream side in the turning direction. The third rim water passage 120c extends in the circumferential direction from the third water outlet 122c to the vicinity of the first water outlet 122a on the downstream side in the turning direction. The first rim water passage 120a, the second rim water passage 120b, and the third rim water passage 120c may be partially connected.

リム通水路１２０は吐水口１２２から吐出される洗浄水を旋回させるように形成される。リム通水路１２０は、図１、３に示すように、受け面部１３０の上端縁１２６ｃから便鉢部１１０の外側に向かって延びる棚部１２６ｂと、棚部１２６ｂの外周端部から立ち上がる側壁部１２６ａと、側壁部１２６ａの上端部から便鉢部１１０の内側に向かって延びるオーバーハング部１１８と、洗浄水の流れの一部を内向きに曲げる変向部１３２と、を備える。変向部１３２については後述する。 The rim water passage 120 is formed to swirl the cleaning water discharged from the water outlet 122. As shown in FIGS. 1 and 3, the rim water passage 120 includes a shelf 126b extending from the upper end edge 126c of the receiving surface 130 toward the outside of the toilet bowl 110, and a side wall 126a rising from the outer peripheral end of the shelf 126b. And an overhang portion 118 extending from the upper end portion of the side wall portion 126a toward the inside of the toilet bowl portion 110, and a turning portion 132 that bends a part of the flow of the washing water inward. The turning unit 132 will be described later.

リム通水路１２０におけるそれぞれの棚部１２６ｂの径方向の幅は、図３に示すように、下流側ほど小さく形成される。この構成により、吐水口１２２から吐出される洗浄水は、下流側に流れるにつれて、徐々に受け面部１３０に流れ落ちる。 As shown in FIG. 3, the width in the radial direction of each shelf 126b in the rim water passage 120 is formed smaller toward the downstream side. With this configuration, the cleaning water discharged from the water discharge port 122 gradually flows down to the receiving surface portion 130 as it flows downstream.

（オーバーハング部）
オーバーハング部１１８の内縁１１８ａは、便鉢部１１０の上端に内側にせり出すように形成される。オーバーハング部１１８の上面は、便座の支持面となるように平坦化されている。オーバーハング部１１８の下面には、旋回水流の通り道となるリム通水路１２０が形成される。 (Overhang part)
An inner edge 118 a of the overhang portion 118 is formed so as to protrude inward from the upper end of the toilet bowl portion 110. The upper surface of the overhang portion 118 is flattened so as to be a support surface of the toilet seat. On the lower surface of the overhang portion 118, a rim water passage 120 serving as a path for the swirling water flow is formed.

（凹部の形状）
次に、凹部の平面視の形状について説明する。
少ない洗浄水で凹部の立壁を効率的に洗浄する観点では、洗浄すべき立壁の面積が小さい方が有利である。立壁の面積は、平面視の凹部の周縁の輪郭の長さと立壁の高さ寸法によって定まるから、凹部の周縁の輪郭の長さを小さくすることで立壁の面積を減らすことが可能である。つまり、凹部の周縁の輪郭の長さを小さく形成することが、凹部を効率的に洗浄する意味で有利である。 (Shape of recess)
Next, the shape of the recess in plan view will be described.
From the viewpoint of efficiently cleaning the standing wall of the recess with a small amount of cleaning water, it is advantageous that the area of the standing wall to be cleaned is small. Since the area of the standing wall is determined by the length of the contour of the peripheral edge of the concave portion in plan view and the height dimension of the vertical wall, the area of the vertical wall can be reduced by reducing the length of the contour of the peripheral edge of the concave portion. In other words, it is advantageous to make the length of the contour of the peripheral edge of the recess small to efficiently clean the recess.

汚物の排出を円滑にするためには、凹部の左右寸法及び前後寸法は所定寸法以上に形成することが望ましい。凹部の平面視の形状は主に矩形、楕円形、これらを前後に組み合わせた形状及びそれらを変形した形状が考えられる。研究の結果、左右寸法及び前後寸法を一定として、凹部が平面視で三角形状である場合に、矩形や楕円形の場合より、凹部の周縁の輪郭の長さが短い。したがって、凹部の立壁を効率的に洗浄する観点で、凹部の周縁の輪郭は三角形状が有利である。 In order to smoothly discharge the filth, it is desirable that the left and right dimensions and the front and rear dimensions of the recess be greater than a predetermined dimension. As the shape of the concave portion in plan view, a rectangular shape, an elliptical shape, a shape obtained by combining these in the front-rear direction, and a shape obtained by deforming them can be considered. As a result of research, when the left and right dimensions and the front and rear dimensions are constant, and the concave portion is triangular in plan view, the contour length of the peripheral edge of the concave portion is shorter than that of a rectangle or an ellipse. Therefore, from the viewpoint of efficiently cleaning the standing wall of the concave portion, the outline of the peripheral edge of the concave portion is advantageous to be triangular.

便鉢部の凹部の形状を略三角形とは、三角形を構成する各辺が平面視で曲率半径が１００ｍｍ以上の曲線または直線で構成されることを意味する。この結果、三つの角部の角度は平面視で９０度以下の鋭角に形成できる。 The substantially triangular shape of the concave portion of the toilet bowl means that each side constituting the triangle is constituted by a curve or a straight line having a curvature radius of 100 mm or more in plan view. As a result, the angles of the three corners can be formed as acute angles of 90 degrees or less in plan view.

前述の観点に基づき、実施の形態の水洗大便器１００の凹部１１６の形状について説明する。図６は、凹部１１６の内縁を拡大して示す平面図である。凹部１１６は、平面視において、底辺３０ｕが左右の側辺３０ｈ、３０ｍの後方に位置する三角形３０の三辺に対応する三つの立壁によって区画される略三角形状を有する。左立壁２０及び右立壁２２は左右の側辺３０ｈ、３０ｍに対応し、後立壁２４は底辺３０ｕに対応する。左立壁２０と、右立壁２２と、後立壁２４と、の三つの立壁を総称するときは「立壁２６」という。 Based on the above-mentioned viewpoint, the shape of the recessed part 116 of the flush toilet 100 of embodiment is demonstrated. FIG. 6 is an enlarged plan view showing the inner edge of the recess 116. The recess 116 has a substantially triangular shape that is partitioned by three standing walls corresponding to the three sides of the triangle 30 whose bottom 30u is located behind the left and right sides 30h and 30m in plan view. The left standing wall 20 and the right standing wall 22 correspond to the left and right sides 30h and 30m, and the rear standing wall 24 corresponds to the bottom 30u. The three standing walls of the left standing wall 20, the right standing wall 22, and the rear standing wall 24 are collectively referred to as “standing wall 26”.

凹部１１６は、左右の側辺３０ｈ、３０ｍが共有する頂点３０ａに対応する前端部１１６ｆと、左後方の頂点３０ｃに対応する左角部１１６ｈと、右後方の頂点３０ｂに対応する右角部１１６ｍとを有する。特に、前端部１１６ｆと、左角部１１６ｈと、右角部１１６ｍとからなる三つの角部が、それぞれ三角形３０の三つの頂点を通るように形成される。前端部１１６ｆと、左角部１１６ｈと、右角部１１６ｍと、の三つの角部を総称するときは「角部２８」という。 The concave portion 116 includes a front end portion 116f corresponding to the vertex 30a shared by the left and right sides 30h and 30m, a left corner portion 116h corresponding to the left rear vertex 30c, and a right corner portion 116m corresponding to the right rear vertex 30b. Have In particular, three corner portions including a front end portion 116f, a left corner portion 116h, and a right corner portion 116m are formed so as to pass through the three apexes of the triangle 30, respectively. The three corners of the front end portion 116f, the left corner portion 116h, and the right corner portion 116m are collectively referred to as “corner portion 28”.

前端部１１６ｆの曲率半径が過度に大きいと、凹部１１６での水域が低下せずに旋回することがあり、この場合下方向への流れが十分に形成できず排出性能が低下する可能性がある。また、前端部１１６ｆの曲率半径が過度に小さいと、型に注入した素材を型から外す離型作業が困難になることがある。 If the radius of curvature of the front end portion 116f is excessively large, the water area in the recess 116 may turn without lowering, and in this case, the downward flow cannot be sufficiently formed, and the discharge performance may be lowered. . In addition, if the radius of curvature of the front end portion 116f is excessively small, it may be difficult to perform mold release work for removing the material injected into the mold from the mold.

凹部の各立壁に落下した水流は、その立壁に沿って流れ凹部の角部に衝突することによって角部を効果的に洗浄する。したがって、凹部の立壁の曲率半径が過度に小さいと、凹部の角部に衝突する水勢が低下して、凹部の角部で洗い残しが生じる可能性がある。この観点に対応して、凹部１１６は左立壁２０、右立壁２２及び後立壁２４の曲率半径が１００ｍｍ以上の曲線または直線状に形成される。また、凹部の立壁が平面視で内側に突出する凸面である場合は、立壁に沿った流れは角部に衝突し難くなる。この観点に対応して、凹部１１６は平面視で外側に膨らむ凹面に形成される。 The water flow falling on each standing wall of the recess flows along the standing wall and collides with the corner of the recess, thereby effectively cleaning the corner. Therefore, if the curvature radius of the standing wall of the concave portion is excessively small, the water force that collides with the corner portion of the concave portion is lowered, and there is a possibility that unwashed portions are left at the corner portion of the concave portion. Corresponding to this point of view, the recess 116 is formed in a curved line or a straight line in which the radii of curvature of the left standing wall 20, the right standing wall 22, and the rear standing wall 24 are 100 mm or more. In addition, when the standing wall of the recess is a convex surface protruding inward in a plan view, the flow along the standing wall hardly collides with the corner. Corresponding to this viewpoint, the recessed part 116 is formed in the concave surface which swells outside in planar view.

なお、凹部１１６は、左立壁２０、右立壁２２及び後立壁２４の曲率半径が前端部１１６ｆの曲率半径より大きく形成される。 In addition, the recessed part 116 is formed so that the curvature radius of the left standing wall 20, the right standing wall 22, and the rear standing wall 24 is larger than the curvature radius of the front end part 116f.

（吐水口の配置）
次に、吐水口の配置を説明する。
三つの吐水口を有する場合に、少ない洗浄水で便鉢内を効果的に洗浄する観点では、三つの吐水口から吐水される洗浄水のそれぞれが便鉢内で広い範囲に拡散する方が、洗浄水が狭い範囲に集中する場合より有利である。それぞれの洗浄水が広く拡散するためには、三つの吐水口が、凹部を囲んで等間隔に配置される構成が望ましい。前述の観点によれば、点Ｐを中心とする周方向において、三つの吐水口の間隔が四半周以上で半周以下の範囲で形成される構成が効果的である。 (Disposition of the spout)
Next, the arrangement of the water outlet will be described.
In the case of having three water outlets, in the viewpoint of effectively washing the toilet bowl with less wash water, it is better that each of the wash water discharged from the three water outlets diffuses in a wide range in the toilet bowl, It is more advantageous when the washing water is concentrated in a narrow area. In order for each washing water to diffuse widely, a configuration in which three water outlets are arranged at equal intervals surrounding the recess. According to the above-mentioned viewpoint, in the circumferential direction centering on the point P, the structure formed in the range where the space | interval of three water discharge ports is more than a quarter circumference and below a half circumference is effective.

実施の形態の水洗大便器１００では、三つの吐水口１２２は、四つの分割領域Ｓｒ１〜Ｓｒ４のうち、三つの分割領域のそれぞれに個別に形成される。例えば、第１吐水口１２２ａは第１分割領域Ｓｒ１に、第２吐水口１２２ｂは第３分割領域Ｓｒ３に、第３吐水口１２２ｃは第４分割領域Ｓｒ４に配置されてもよい。別の例によれば、第１吐水口１２２ａと第２吐水口１２２ｂの一方が第２分割領域Ｓｒ２に配置されてもよい。このように構成することによって、三つの吐水口１２２は、四半周以上で半周以下の範囲の間隔で配置できる。 In the flush toilet 100 according to the embodiment, the three water discharge ports 122 are individually formed in each of the three divided regions among the four divided regions Sr1 to Sr4. For example, the first water outlet 122a may be arranged in the first divided area Sr1, the second water outlet 122b in the third divided area Sr3, and the third water outlet 122c in the fourth divided area Sr4. According to another example, one of the first water outlet 122a and the second water outlet 122b may be disposed in the second divided region Sr2. By comprising in this way, the three water discharge ports 122 can be arrange | positioned by the space | interval of the range of a quarter circumference or more and a half circumference or less.

特に、水洗大便器１００では、平面視において、三つの吐水口１２２は、第１吐水口１２２ａが凹部１１６の左方に形成され、第２吐水口１２２ｂが凹部１１６の前方に形成され、第３吐水口１２２ｃが凹部１１６の右方であって後方立壁の２４の後方に形成される。 In particular, in the flush toilet 100, in the plan view, the three water outlets 122 are formed such that the first water outlet 122a is formed on the left side of the concave portion 116, the second water outlet 122b is formed in front of the concave portion 116, and the third A water discharge port 122c is formed on the right side of the recess 116 and behind the rear standing wall 24.

なお、水洗大便器１００では、平面視において、凹部１１６の前端部１１６ｆが三つの吐水口１２２を結んだ三角形の中に位置する。また、第２吐水口１２２ｂは凹部１１６の左右範囲Ｌｘ内に位置し、第３吐水口１２２ｃは凹部１１６の左右範囲Ｌｘの外側に位置する。このように配置することによって、三つの吐水口１２２が凹部１１６を周方向に囲み、洗浄水が効率的に凹部１１６を洗浄しうる。 In the flush toilet 100, the front end portion 116f of the recess 116 is located in a triangle connecting the three water outlets 122 in a plan view. Further, the second water outlet 122 b is located in the left-right range Lx of the recess 116, and the third water outlet 122 c is located outside the left-right range Lx of the recess 116. By arrange | positioning in this way, the three water discharge ports 122 surround the recessed part 116 in the circumferential direction, and wash water can wash | clean the recessed part 116 efficiently.

凹部の三つの立壁を効果的に洗浄する観点では、三つの吐水口のそれぞれが各立壁に対応して洗浄水を吐水することが望ましい。本実施形態の水洗大便器１００では、三つの吐水口は、洗浄水の流れる方向において、それぞれの吐水口から一番近い立壁の次の立壁に対応して吐水する。つまり、水洗大便器１００では、第１吐水口１２２ａが右立壁２２に対応して設けられ、第２吐水口１２２ｂが後立壁２４に対応して設けられ、第３吐水口１２２ｃが左立壁２０に対応して設けられる。 From the viewpoint of effectively cleaning the three standing walls of the recess, it is desirable that each of the three water outlets discharges the cleaning water corresponding to each standing wall. In the flush toilet 100 of the present embodiment, the three water outlets discharge water corresponding to the next vertical wall of the vertical wall closest to each water outlet in the direction in which the cleaning water flows. That is, in the flush toilet 100, the first water outlet 122a is provided corresponding to the right standing wall 22, the second water outlet 122b is provided corresponding to the rear standing wall 24, and the third water outlet 122c is provided on the left standing wall 20. Correspondingly provided.

図７を参照して後述するように、第１吐水口１２２ａの第１主流１６２は右立壁２２に落下し、第２吐水口１２２ｂの第１主流１７２は後立壁２４に落下し、第３吐水口１２２ｃの第１主流１８２は左立壁２０に落下する。第１主流１６２、１７２、１８２はそれぞれ受け面部１３０を約半周して凹部１１６に落下するように構成される。 As will be described later with reference to FIG. 7, the first main flow 162 of the first water outlet 122 a falls to the right standing wall 22, and the first main flow 172 of the second water outlet 122 b falls to the rear standing wall 24, and the third discharge The first main flow 182 of the water port 122c falls on the left standing wall 20. The first mainstreams 162, 172, and 182 are each configured to fall around the receiving surface portion 130 about a half and fall into the recess 116.

（水流）
次に図７を参照して、洗浄水の水流を説明する。図７は、便鉢部１１０の中における洗浄水の流れ方を模式的に示す図である。前述したように、給水管１０４から供給された洗浄水は、導水路３８ｂを通じて三つのリム導水路１２４に供給される。リム導水路１２４に供給された洗浄水１５８、１６８，１７８は、吐水口１２２からリム通水路１２０に吐水され、リム通水路１２０から内側に湾曲する第１主流１６２、１７２，１８２と、リム通水路１２０に沿って旋回する第２主流１６４、１７４，１８４と、を形成する。
なお、洗浄水の主流とは、洗浄水の多くの割合が同様に流れる主な流れを意味し，一つの吐水口の吐水流が複数の主流を形成することがある。 (Water flow)
Next, with reference to FIG. 7, the flow of the cleaning water will be described. FIG. 7 is a diagram schematically showing how the wash water flows in the toilet bowl 110. As described above, the wash water supplied from the water supply pipe 104 is supplied to the three rim water conduits 124 through the water conduit 38b. The cleaning waters 158, 168, 178 supplied to the rim water conduit 124 are discharged from the water outlet 122 to the rim water passage 120, and are bent to the inside from the rim water passage 120. The second main flow 164, 174, 184 swirling along the water channel 120 is formed.
In addition, the main flow of washing water means a main flow in which a large proportion of the washing water flows in the same manner, and a water discharge flow from one outlet may form a plurality of main flows.

（変向部）
ここで、洗浄水の流れはリム部１０８の形状や便鉢部１１０の形状に影響されるから、狙いとする第１主流と第２主流を形成することは容易ではない。まず先に、図３，図４を参照して、第１主流と第２主流とをコントロールする変向部１３２について説明する。 (Turning part)
Here, since the flow of the washing water is affected by the shape of the rim portion 108 and the shape of the toilet bowl 110, it is not easy to form the first main flow and the second main flow to be targeted. First, referring to FIG. 3 and FIG. 4, the turning section 132 that controls the first main flow and the second main flow will be described.

リム通水路１２０には平面視で円弧状に湾曲する側壁部１２６ａが凹部１１６を囲むように形成される。このような側壁部１２６ａの湾曲の作用によって、洗浄水には側壁部１２６ａに沿って曲げられて周方向に旋回する水流が形成される。 In the rim water passage 120, a side wall 126a that is curved in an arc shape in plan view is formed so as to surround the recess 116. Due to the curved action of the side wall 126a, a water flow that is bent along the side wall 126a and swirls in the circumferential direction is formed in the cleaning water.

水洗大便器１００では、リム通水路１２０の側壁部１２６ａには、側壁部１２６ａに沿って周方向に旋回する洗浄水の流れの一部を内向きに曲げる変向部１３２が設けられる。変向部１３２は、側壁部１２６ａの湾曲の作用とは別に、洗浄水の流れの一部を内向きに曲げる。変向部１３２を設けることによって、主流の方向転換の位置を決め、洗浄水の流れを変更して第１主流と第２主流とを緻密にコントロールすることができる。 In the flush toilet 100, the side wall portion 126a of the rim water passage 120 is provided with a turning portion 132 that bends inward a part of the flow of the cleaning water swirling in the circumferential direction along the side wall portion 126a. The turning portion 132 bends a part of the flow of the cleaning water inward, separately from the bending action of the side wall portion 126a. By providing the turning portion 132, the position of the main flow direction change can be determined, and the flow of the washing water can be changed to precisely control the first main flow and the second main flow.

図３に示すように、変向部１３２は、側壁部１２６ａの一部が周方向の両側より内側に張出す第１凸面部１３４ａ、第２凸面部１３４ｂ及び第３凸面部１３４ｃとを有する。なお、第１凸面部１３４ａ、第２凸面部１３４ｂ及び第３凸面部１３４ｃを総称するときは「凸面部１３４」という。凸面部１３４は吐水口１２２の下流側のリム通水路１２０に設けられる。 As shown in FIG. 3, the turning portion 132 includes a first convex surface portion 134a, a second convex surface portion 134b, and a third convex surface portion 134c, in which a part of the side wall portion 126a extends inward from both sides in the circumferential direction. The first convex surface portion 134a, the second convex surface portion 134b, and the third convex surface portion 134c are collectively referred to as “convex surface portion 134”. The convex surface portion 134 is provided in the rim water passage 120 on the downstream side of the water outlet 122.

第１凸面部１３４ａは第１吐水口１２２ａと第２吐水口１２２ｂの間に第１吐水口１２２ａに寄って設けられる。第２凸面部１３４ｂは第２吐水口１２２ｂと第３吐水口１２２ｃの間に第２吐水口１２２ｂに寄って設けられる。第３凸面部１３４ｃは第３吐水口１２２ｃと第１吐水口１２２ａの間に第３吐水口１２２ｃに寄って設けられる。 The first convex surface portion 134a is provided near the first water outlet 122a between the first water outlet 122a and the second water outlet 122b. The second convex surface portion 134b is provided between the second water outlet 122b and the third water outlet 122c so as to approach the second water outlet 122b. The third convex surface portion 134c is provided near the third water outlet 122c between the third water outlet 122c and the first water outlet 122a.

図４は、第１凸面部１３４ａの周囲を拡大して示す模式図である。なお比較のため、凸面部を有しない場合の側壁部の輪郭２３４ａを破線で示す。第１凸面部１３４ａは、上流側から先導部１３４ａｓと、突部１３４ａｔと、下流部１３４ａｕとがこの順で形成される。突部１３４ａｔは、その両側の先導部１３４ａｓ及び下流部１３４ａｕより内側に張出す部分である。 FIG. 4 is an enlarged schematic view showing the periphery of the first convex surface portion 134a. For comparison, the outline 234a of the side wall portion without the convex surface portion is indicated by a broken line. As for the 1st convex surface part 134a, the guide part 134as, the protrusion part 134at, and the downstream part 134au are formed in this order from the upstream. The protrusion 134at is a portion that protrudes inward from the leading portion 134as and the downstream portion 134au on both sides thereof.

第１吐水口１２２ａから吐き出された洗浄水は第１水流１６０を形成する。第１水流１６０の外側の部分の水流１６０ｓは先導部１３４ａｓに衝突し、先導部１３４ａｓに沿って内向きに流れる。第１水流１６０の内側の部分の水流１６０ｕは、先導部１３４ａｓに衝突せずに突部１３４ａｔを通過し、下流部１３４ａｕ及びその下流側につながる側壁部１２６ａに沿って周方向に旋回して流れる。図４では、理解を容易にするために、水流１６０ｓが水流１６０ｕと交差するように描いているが、水流１６０ｓと水流１６０ｕは相互に影響を受けながら、所望の第１主流１６２と第２主流１７４とを形成する。 The washing water discharged from the first water outlet 122a forms a first water flow 160. The water flow 160s in the outer portion of the first water flow 160 collides with the leading portion 134as and flows inward along the leading portion 134as. The water flow 160u in the inner portion of the first water flow 160 passes through the protrusion 134at without colliding with the leading portion 134as, and swirls in the circumferential direction along the downstream portion 134au and the side wall portion 126a connected to the downstream portion 134au. . In FIG. 4, for ease of understanding, the water flow 160s is drawn so as to intersect with the water flow 160u. However, the water flow 160s and the water flow 160u are influenced by each other, and the desired first main flow 162 and second main flow are used. 174.

このように、第１凸面部１３４ａは、第１水流１６０から旋回する水流１６０ｓと、旋回する水流１６０ｓから内側に湾曲する水流１６０ｕとを形成することができる。第１凸面部１３４ａの形状を調整して水流１６０ｓと水流１６０ｕに所望の水量、水勢及び方向を与えることによって、狙いに沿った第１主流１６２と第２主流１７４とを生成できる。
なお、第２凸面部１３４ｂ及び第３凸面部１３４ｃの形状とその作用は、第１凸面部１３４ａについて用いた図４及び説明と同様であり、重複する説明は省略する。 Thus, the 1st convex surface part 134a can form the water flow 160s swirling from the 1st water flow 160, and the water flow 160u curved inside from the swirling water flow 160s. By adjusting the shape of the first convex surface part 134a to give the water flow 160s and the water flow 160u with a desired amount of water, water flow, and direction, it is possible to generate the first main flow 162 and the second main flow 174 that are aimed.
In addition, the shape of the 2nd convex surface part 134b and the 3rd convex surface part 134c and its effect | action are the same as that of FIG. 4 used about the 1st convex surface part 134a, and description, The overlapping description is abbreviate | omitted.

以上説明したように、変向部１３２を設けることによって、洗浄水の流れを緻密にコントロールできる。特に、主流の方向転換の位置を決めることができるから、リム部１０８の棚部１２６ｂの形状や便鉢部１１０の形状に影響され難く、狙いとする洗浄水の流れを形成することが容易になる。 As described above, the flow of cleaning water can be precisely controlled by providing the turning portion 132. In particular, since the position of the mainstream direction change can be determined, it is difficult to be influenced by the shape of the shelf 126b of the rim portion 108 and the shape of the toilet bowl 110, and it is easy to form a target washing water flow. Become.

図７に戻る。第１主流１６２は、受け面部１３０を広く洗浄しながら右立壁２２に向かって落下して、右立壁２２に沿って流れ、右角部１１６ｍに衝突する。衝突した第１主流１６２は、下向きの流れ１６２ａと上向きの流れを形成すると共に、凹部１１６内で向きを変えて後立壁２４に沿って流れる横向きの流れを形成する。後立壁２４に流れる第１主流１６２は、後述する第１主流１７２と合流して反時計回りに横旋回する渦１８８を形成する。なお、右立壁２２に向かって落下する水には、別の吐水口の吐水が一部含まれてもよい。 Returning to FIG. The first main flow 162 falls toward the right standing wall 22 while widely washing the receiving surface portion 130, flows along the right standing wall 22, and collides with the right corner portion 116m. The first main flow 162 that has collided forms an upward flow with the downward flow 162 a and also changes the direction within the recess 116 to form a lateral flow that flows along the rear wall 24. The first main flow 162 flowing through the rear wall 24 merges with a first main flow 172 described later to form a vortex 188 that turns counterclockwise. The water falling toward the right standing wall 22 may include a part of water discharged from another water outlet.

第１主流１６２は右立壁２２に沿って流れることによってその壁面を効果的に洗浄する。第１主流１６２は右角部１１６ｍに衝突することによってその角部を効果的に洗浄する。第１主流１６２は後立壁２４に沿って流れることによってその壁面を効果的に洗浄する。第１主流１６２は下向きの流れ１６２ａ形成することによって汚物の封水部１１６ｅから排水路管部１１２への排出を促進する。 The first main flow 162 flows along the right standing wall 22 to effectively clean the wall surface. The first main flow 162 effectively cleans the corner by colliding with the right corner 116m. The first main flow 162 effectively cleans the wall surface by flowing along the rear wall 24. The first main flow 162 promotes the discharge of filth from the sealed water portion 116e to the drain pipe portion 112 by forming a downward flow 162a.

第２リム導水路１２４ｂに供給された洗浄水１６８は、第２吐水口１２２ｂから第２リム通水路１２０ｂに吐水され、第２水流１７０を形成する。第２水流１７０は第２リム通水路１２０ｂから内側に湾曲する第１主流１７２と、第２リム通水路１２０ｂに沿って旋回する第２主流１７４と、を形成する。 The wash water 168 supplied to the second rim water conduit 124 b is discharged from the second water outlet 122 b to the second rim water passage 120 b to form a second water flow 170. The second water flow 170 forms a first main flow 172 that curves inward from the second rim water passage 120b, and a second main flow 174 that swirls along the second rim water passage 120b.

第１主流１７２は、受け面部１３０を広く洗浄しながら後立壁２４に向かって落下して、後立壁２４に沿って流れ、左角部１１６ｈに衝突する。衝突した第１主流１７２は、下向きの流れ１７２ａと上向きの流れを形成すると共に、凹部１１６内で反時計回りに向きを変えて左立壁２０に沿って流れる横向きの流れを形成する。左立壁２０に流れる第１主流１７２は、後述する第１主流１８２と合流して反時計回りに横旋回する渦１８８を形成する。なお、後立壁２４に向かって落下する水には、別の吐水口の吐水が一部含まれてもよい。 The first main flow 172 falls toward the rear wall 24 while cleaning the receiving surface 130 widely, flows along the rear wall 24, and collides with the left corner portion 116h. The first main flow 172 that has collided forms an upward flow with the downward flow 172a, and forms a lateral flow that flows along the left standing wall 20 while turning counterclockwise within the recess 116. The first main flow 172 flowing through the left standing wall 20 joins a first main flow 182 described later to form a vortex 188 that turns counterclockwise. Note that the water falling toward the rear wall 24 may include a part of water discharged from another water outlet.

第１主流１７２は後立壁２４に沿って流れることによってその壁面を効果的に洗浄する。第１主流１７２は左角部１１６ｈに衝突することによってその角部を効果的に洗浄する。第１主流１７２は左立壁２０に沿って流れることによってその壁面を効果的に洗浄する。第１主流１７２は下向きの流れ１７２ａ形成することによって、渦１８８に縦旋回を形成し、汚物の封水部１１６ｅから排水路管部１１２への排出を促進する。 The first main flow 172 flows along the rear wall 24 to effectively clean the wall surface. The first main flow 172 effectively cleans the corner by colliding with the left corner 116h. The first main flow 172 flows along the left standing wall 20 to effectively clean the wall surface. The first main flow 172 forms a downward flow 172a, thereby forming a vertical swirl in the vortex 188 and facilitating discharge of filth from the sealed water portion 116e to the drainage pipe portion 112.

第３リム導水路１２４ｃに供給された洗浄水１７８は、第３吐水口１２２ｃから第３リム通水路１２０ｃに吐水され、第３水流１８０を形成する。第３水流１８０は第３リム通水路１２０ｃから内側に湾曲する第１主流１８２と、第３リム通水路１２０ｃに沿って旋回する第２主流１８４と、を形成する。 The wash water 178 supplied to the third rim water conduit 124 c is discharged from the third water outlet 122 c to the third rim water passage 120 c to form a third water flow 180. The third water flow 180 forms a first main flow 182 that curves inward from the third rim water passage 120c, and a second main flow 184 that swirls along the third rim water passage 120c.

第１主流１８２は、受け面部１３０を広く洗浄しながら左立壁２０に向かって落下して、左立壁２０に沿って流れ、前端部１１６ｆに衝突する。衝突した第１主流１８２は、下向きの流れ１８２ａと上向きの流れを形成すると共に、凹部１１６内で反時計回りに向きを変えて右立壁２２に沿って流れる横向きの流れを形成する。右立壁２２に流れる第１主流１８２は、第１主流１６２と合流して反時計回りに横旋回する渦１８８を形成する。なお、左立壁２０に向かって落下する水には、別の吐水口の吐水が一部含まれてもよい。 The first main flow 182 falls toward the left standing wall 20 while widely washing the receiving surface portion 130, flows along the left standing wall 20, and collides with the front end portion 116f. The first main flow 182 that has collided forms an upward flow with the downward flow 182 a, and forms a lateral flow that changes its direction counterclockwise within the recess 116 and flows along the right standing wall 22. The first main flow 182 flowing through the right standing wall 22 joins the first main flow 162 to form a vortex 188 that turns counterclockwise. The water falling toward the left standing wall 20 may include a part of water discharged from another water outlet.

第１主流１８２は左立壁２０に沿って流れることによってその壁面を効果的に洗浄する。第１主流１８２は前端部１１６ｆに衝突することによってその角部を効果的に洗浄する。第１主流１８２は右立壁２２に沿って流れることによってその壁面を効果的に洗浄する。第１主流１８２は下向きの流れ１８２ａ形成することによって、渦１８８に縦旋回を形成し、汚物の封水部１１６ｅから排水路管部１１２への排出を促進する。 The first main flow 182 flows along the left standing wall 20 to effectively clean the wall surface. The first main flow 182 effectively cleans the corners by colliding with the front end portion 116f. The first main flow 182 flows along the right standing wall 22 to effectively clean the wall surface. The first main flow 182 forms a downward flow 182a, thereby forming a vertical swirl in the vortex 188 and promoting the discharge of filth from the sealed water portion 116e to the drainage pipe portion 112.

第１主流１６２と第１主流１７２と第１主流１８２とで渦１８８を形成することによって強力に汚物を封水部１１６ｅの中央に集めて排水路管部１１２から排出する（図１も参照）。また、第１主流１６２と第１主流１７２と第１主流１８２とは、左立壁２０と右立壁２２と後立壁２４とを下向きにも流れることによって、渦１８８に縦旋回を形成して汚物の封水部１１６ｅから排水路管部１１２への排出を促進する。 By forming a vortex 188 between the first main flow 162, the first main flow 172, and the first main flow 182, filth is strongly collected at the center of the sealed portion 116e and discharged from the drainage pipe portion 112 (see also FIG. 1). . In addition, the first main flow 162, the first main flow 172, and the first main flow 182 flow downward in the left standing wall 20, the right standing wall 22, and the rear standing wall 24, thereby forming a vertical swirl in the vortex 188 and The discharge from the sealed water part 116e to the drainage pipe part 112 is promoted.

図８も参照する。図８は、便鉢部１１０の中における洗浄水の流れる主な範囲を模式的に示す図である。第２主流１６４は、第１リム通水路１２０ａに沿って旋回して、第２吐水口１２２ｂから吐き出される第２水流１７０と重なり合う。第２主流１７４は第２リム通水路１２０ｂに沿って旋回して第３吐水口１２２ｃから吐き出される第３水流１８０と重なり合う。第２主流１８４は第３リム通水路１２０ｃに沿って旋回して第１吐水口１２２ａから吐き出される第１水流１６０と重なり合う。 Reference is also made to FIG. FIG. 8 is a diagram schematically showing a main range in which the wash water flows in the toilet bowl 110. As shown in FIG. The second main flow 164 turns along the first rim water passage 120a and overlaps with the second water flow 170 discharged from the second water discharge port 122b. The second main flow 174 overlaps with the third water flow 180 that turns along the second rim water passage 120b and is discharged from the third water discharge port 122c. The second main flow 184 overlaps with the first water flow 160 that turns along the third rim water passage 120c and is discharged from the first water discharge port 122a.

図３に示すように、リム通水路１２０の棚部１２６ｂの径方向の幅は旋回方向に向かって徐々に狭くなるように形成されるから、第２主流１６４、１７４，１８４（図７も参照）は旋回しながら徐々に受け面部１３０に落下し、凹部１１６に向かってシート状の落下水流１９０、１９２、１９４を形成する。落下水流１９０、１９２、１９４は受け面部１３０の表面に膜状に流れながら受け面部１３０を広く洗浄する。 As shown in FIG. 3, since the radial width of the shelf 126b of the rim water passage 120 is formed so as to be gradually reduced in the turning direction, the second main flows 164, 174, 184 (see also FIG. 7). ) Gradually falls to the receiving surface 130 while turning, and forms sheet-like falling water streams 190, 192, 194 toward the recess 116. The falling water flows 190, 192, 194 widely wash the receiving surface portion 130 while flowing in the form of a film on the surface of the receiving surface portion 130.

なお、図８では、落下水流１９０、１９２、１９４と第１主流１６２、１７２、１８２とを分離し示しているが、落下水流１９０、１９２、１９４には第１主流１６２、１７２、１８２から分流した洗浄水も一部含まれている。 In FIG. 8, the falling water streams 190, 192, 194 are separated from the first main streams 162, 172, 182, but the falling water streams 190, 192, 194 are separated from the first main streams 162, 172, 182. Some washed water is also included.

図８に示すように、落下水流１９０は落下水流１９２と重なり合う領域１９６を形成し、落下水流１９２は落下水流１９４と重なり合う領域１９８を形成し、落下水流１９４は落下水流１９０と重なり合う領域２００を形成する。例えば、重なり合う領域２００には筋状に隆起して受け面部１３０を流れ落ちる水流が形成される。 As shown in FIG. 8, the falling water stream 190 forms a region 196 that overlaps the falling water stream 192, the falling water stream 192 forms a region 198 that overlaps the falling water stream 194, and the falling water stream 194 forms a region 200 that overlaps the falling water stream 190. To do. For example, the overlapping region 200 is formed with a water flow that rises in a streak shape and flows down the receiving surface portion 130.

次に、水洗大便器１００の動作を説明する。
水洗大便器１００は、所定のスイッチ、レバー等の操作部材の操作により、給水管１０４から所定量の洗浄水が流入路３８ａと導水路３８ｂとを通じて導水路１２４に供給される。供給された洗浄水は、吐水口１２２から通水路１２０に向けて吐水され、便鉢部１１０内の汚物を洗浄水の落差を用いて凹部１１６の下部の封水部１１６ｅに押し流すと共に、便鉢部１１０内を広く洗浄する。 Next, the operation of the flush toilet 100 will be described.
In the flush toilet 100, a predetermined amount of flush water is supplied from the water supply pipe 104 to the water conduit 124 through the inflow passage 38a and the water conduit 38b by operation of operation members such as predetermined switches and levers. The supplied wash water is discharged from the spout 122 toward the water passage 120, and the sewage in the toilet bowl 110 is pushed down to the sealing part 116e below the recess 116 using a drop of the wash water, and the toilet bowl The inside of the part 110 is washed widely.

次に、本実施の形態の水洗大便器１００の特徴を説明する。
吐水口１２２から吐出されたそれぞれの洗浄水の第１主流１６２，１７２、１７４は、凹部１１６の立壁２６の壁面を沿うように流れることで、当該壁面に付着した汚物を強力に洗い流すことができる。また、当該第１主流は各角部２８（図６も参照）に向かって流れて、角部２８の壁面にぶつかり、主に横旋回方向と下方向と上方向とに分散される。角部２８が鋭角であることから、横旋回方向の流れは抑制され、また重力および便器上部から下部への第１主流の流れに従い上方向の流れも抑制され、相対的に下方向の強い流れが形成される。 Next, the features of the flush toilet 100 of the present embodiment will be described.
The first main flows 162, 172, and 174 discharged from the water outlet 122 flow along the wall surface of the standing wall 26 of the recess 116, so that the filth attached to the wall surface can be washed away strongly. . Further, the first main flow flows toward each corner 28 (see also FIG. 6), hits the wall surface of the corner 28, and is mainly dispersed in the lateral turning direction, the downward direction, and the upward direction. Since the corner portion 28 has an acute angle, the flow in the lateral turning direction is suppressed, and the upward flow is also suppressed in accordance with the gravity and the flow of the first main flow from the upper part to the lower part of the toilet. Is formed.

渦１８８の流れと共に、これら下方向の強力な流れが各角部２８に対応する３方向から形成されることによって、汚物を封水部１１６ｅから排水路管部１１２に強力に流し出すことができる。 Together with the flow of the vortex 188, these strong downward flows are formed from the three directions corresponding to the respective corners 28, so that the filth can be strongly discharged from the sealed portion 116e to the drainage pipe portion 112. .

また、第２主流によってリム部１０８から受け面部１３０にかけても広くも洗浄することができ、便鉢部１１０をまんべんなく洗浄できる。 In addition, the second mainstream can wash the rim portion 108 to the receiving surface portion 130 widely, and the toilet bowl portion 110 can be thoroughly washed.

例えば、凹部が円形状または４辺以上の多角形の構成では、凹部に強い横旋回の渦は形成できるが、下方向の流れは弱くなってしまい、汚物排出に不利である。これに対して水洗大便器１００は、凹部１１６が三角形の各辺に対応する三つの立壁によって区画されるから、下方向の流れを強くして効果的に汚物を排出できる。また、横旋回の流れを弱くして渦１８８を抑制できる。 For example, when the concave portion is circular or has a polygonal shape with four or more sides, a strong swirl vortex can be formed in the concave portion, but the downward flow becomes weak, which is disadvantageous for waste discharge. On the other hand, in the flush toilet 100, since the concave portion 116 is partitioned by three standing walls corresponding to each side of the triangle, the downward flow can be strengthened to effectively discharge filth. Further, the flow of lateral turning can be weakened and the vortex 188 can be suppressed.

三つの吐水口が一方の側に集中すると、水流の偏りが大きくなり便鉢内に洗浄が不足する領域を生じることがある。これに対して水洗大便器１００は、三つの吐水口１２２の間隔が四半周以上で半周以下の範囲で形成されるから、水流の偏りが抑制され、良好な洗浄能力を得られるようになる。 When the three water outlets are concentrated on one side, the deviation of the water flow becomes large, and there may be a region where the washing is insufficient in the toilet bowl. On the other hand, since the flush toilet 100 is formed in a range where the interval between the three water discharge ports 122 is not less than a quarter circumference and not more than a half circumference, the unevenness of the water flow is suppressed and a good washing ability can be obtained.

凹部に対して三つの吐水口が偏って配置されると、凹部の立壁の洗浄力に偏りを生じることがある。これに対して水洗大便器１００は、凹部１１６を囲むように、第１吐水口１２２ａが凹部１１６の左方に設けられ、第２吐水口１２２ｂが凹部１１６の前方に設けられ、第３吐水口１２２ｃが凹部１１６の後方に設けられるから、凹部１１６の立壁の洗浄力の偏りを抑制できる。 If the three water outlets are biased with respect to the recess, the cleaning power of the standing wall of the recess may be biased. On the other hand, in the flush toilet 100, the first water outlet 122a is provided on the left side of the concave portion 116 so as to surround the concave portion 116, the second water outlet 122b is provided in front of the concave portion 116, and the third water outlet. Since 122c is provided behind the recessed part 116, the bias | inclination of the cleaning power of the standing wall of the recessed part 116 can be suppressed.

主な洗浄水が旋回しながら落下する主流のみを形成する構成では、凹部への落下時の水勢が低下して凹部の立壁の洗浄力が低下することが考えられる。これに対して水洗大便器１００は、吐水口１２２が、それぞれ立壁２６に向かって落下して当該立壁２６に沿って流れる第１主流１６２，１７２，１８２を吐出するから、水勢の低下が抑えられ立壁２６を効果的に洗浄しうる。 In the configuration in which only the main flow in which the main cleaning water falls while swirling is formed, it is considered that the water force at the time of dropping into the concave portion is reduced and the cleaning power of the standing wall of the concave portion is reduced. On the other hand, in the flush toilet 100, the water outlet 122 drops toward the standing wall 26 and discharges the first mainstreams 162, 172, and 182 that flow along the standing wall 26, so that a decrease in water force is suppressed. The standing wall 26 can be effectively cleaned.

吐水口１２２から吐出された第１主流１６２，１７２，１８２が、主に受け面部１３０で合流すると、凹部１１６への落下時の水勢や方向に影響を生じることが考えられる。これに対して水洗大便器１００は、第１主流１６２が第１主流１８２と、第１主流１８２が第１主流１７２と、第１主流１７２が第１主流１６２と、それぞれが凹部１１６の領域で合流するから、凹部１１６への落下時の水勢や方向への影響を抑制できる。 If the first main flows 162, 172, and 182 discharged from the water discharge port 122 are joined together mainly at the receiving surface portion 130, it is considered that the water force and direction at the time of dropping into the recess 116 are affected. On the other hand, in the flush toilet 100, the first main flow 162 is the first main flow 182; the first main flow 182 is the first main flow 172; the first main flow 172 is the first main flow 162; Since it merges, the influence on the water force and direction at the time of the fall to the recessed part 116 can be suppressed.

第１主流１６２，１７２，１８２のそれぞれが合流することで、さらに強い横方向の渦流および下方向の流れを形成することができ、汚物を強力に流し出すことができる。 When the first main flows 162, 172, and 182 are joined together, a stronger lateral vortex and a downward flow can be formed, and filth can be washed out strongly.

三つの吐水口から吐水されるそれぞれの洗浄水の主流の境界部分では洗浄水が十分に流れず洗浄力が不足することがある。これに対して水洗大便器１００は、第２主流１６４，１７４、１８４が、それぞれ、リム通水路１２０の側壁部１２６ａに沿って周方向に流れ、三つの吐水口１２２のうち旋回方向側の吐水口１２２から吐出された洗浄水に重なり合うように構成されるから、主流の境界部分の水流の不足が抑制され、便鉢部１１０を広く良好に洗浄することができる。 The cleaning water may not flow sufficiently at the boundary portion of the main flow of each cleaning water discharged from the three water outlets, and the cleaning power may be insufficient. On the other hand, in the flush toilet 100, the second main flows 164, 174, and 184 flow in the circumferential direction along the side wall 126a of the rim water passage 120, respectively, and out of the three water outlets 122, the discharge on the turning direction side. Since it is configured to overlap with the wash water discharged from the water port 122, the lack of water flow at the boundary portion of the mainstream is suppressed, and the toilet bowl 110 can be washed widely and satisfactorily.

洗浄水に所望の水流を実現するために、便鉢部の全体形状を変更すると他の性能を損なうことがあり、所望の水流を実現することの制約になっている。これに対して水洗大便器１００では、リム通水路１２０に洗浄水の流れの一部を内向きに曲げる変向部１３２が設けられるから、側壁部１２６ａの湾曲の作用とは別に、変向部１３２を設けることによって、洗浄水の流れを変更して所望の流れに近づけることができる。 In order to realize a desired water flow in the washing water, changing the overall shape of the stool portion may impair other performance, which is a constraint for realizing the desired water flow. On the other hand, in the flush toilet 100, since the rim water passage 120 is provided with the turning portion 132 that bends a part of the flow of the washing water inward, the turning portion is separated from the bending action of the side wall portion 126a. By providing 132, the flow of washing water can be changed to approach the desired flow.

水洗大便器１００では、前記変向部１３２に、側壁部１２６ａの一部が周方向の両側より内側に張出す凸面部１３４を有するから、棚部１２６ｂや便鉢部１１０の形状の変更を最小限に抑えることができる。 In the flush toilet 100, since the part of the side wall part 126a has a convex surface part 134 projecting inward from both sides in the circumferential direction, the shape change of the shelf part 126b and the toilet bowl part 110 is minimized. To the limit.

以上、本発明の実施の形態をもとに説明した。これらの実施の形態は例示であり、いろいろな変形および変更が本発明の特許請求範囲内で可能なこと、またそうした変形例および変更も本発明の特許請求の範囲にあることは当業者に理解されるところである。従って、本明細書での記述および図面は限定的ではなく例証的に扱われるべきものである。 In the above, it demonstrated based on embodiment of this invention. Those skilled in the art will understand that these embodiments are examples, and that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes are also within the scope of the claims of the present invention. It is where it is done. Accordingly, the description and drawings herein are to be regarded as illustrative rather than restrictive.

水洗大便器１００は、洗浄方式として洗い落し式を用いる例を説明したが、サイホン式、サイホンゼット式等の他方式と組み合わせた洗浄方式により便鉢部１１０内を洗浄してもよい。水洗大便器１００は、給水方式として水道直圧式を用いる例を説明したが、この他にも重力を用いた重力給水式、フラッシュバルブ式等の給水方式が用いられてもよい。便器本体１０２は壁掛け式便器を例に説明したが、トイレ室の床面上に設置される床置き式便器でもよい。また、便器本体１０２は陶器の他に樹脂等を素材としてもよい。 Although the flush toilet 100 has been described with an example of using the wash-off method as the cleaning method, the inside of the toilet bowl 110 may be cleaned by a cleaning method combined with another method such as a siphon type or a siphon-zette type. Although the flush toilet 100 has been described with respect to an example in which a water supply direct pressure system is used as a water supply system, a water supply system such as a gravity water supply system using gravity or a flash valve system may be used. Although the toilet main body 102 has been described by taking a wall-mounted toilet as an example, it may be a floor-standing toilet installed on the floor surface of a toilet room. The toilet body 102 may be made of resin or the like in addition to pottery.

本発明の実施の形態では、吐水口が反時計回りの旋回水流を生成する例について説明したが、これに限られない。例えば左右を入れ替えて時計回りの水流を生成するように構成してもよい。 In the embodiment of the present invention, the example in which the water discharge port generates the counterclockwise swirling water flow has been described, but the present invention is not limited thereto. For example, it may be configured to generate a clockwise water flow by switching the left and right.

本発明の実施の形態では、リム部に吐水口が三つである例について説明したが、三つ吐水口の他に補助的に別の吐水手段を設けてもよい。 In the embodiment of the present invention, the example in which the rim portion has three water discharge ports has been described, but another water discharge means may be provided in addition to the three water discharge ports.

１０壁面、２０左立壁、２２右立壁、２４後立壁、
２６立壁、２８角部、３０三角形、３８ａ流入路、
３８ｂ導水路、１００水洗大便器、１０２便器本体、
１０４給水管、１０８リム部、１１０便鉢部、
１１２排水路管部、１１４周壁部、１１６凹部、
１１６ｅ封水部、１１８オーバーハング部、１１８ａ内縁、
１２０リム通水路、１２２吐水口、１２４リム導水路、
１２６ａ側壁部、１２６ｂ棚部、１２６ｃ上端縁、
１３０受け面部、１３２変向部、１３４凸面部、
１６０第１水流、１６２第１主流、１６４第２主流、
１７０第２水流、１７２第１主流、１７４第２主流、
１８０第３水流、１８２第１主流、１８４第２主流、
１８８渦、１９０落下水流、１９２落下水流、
１９４落下水流、Ｍ１中心軸。 10 wall, 20 left standing wall, 22 right standing wall, 24 rear standing wall,
26 standing walls, 28 corners, 30 triangles, 38a inlet,
38b Waterway, 100 flush toilet, 102 toilet body,
104 water supply pipe, 108 rim part, 110 toilet bowl part,
112 drainage pipe section, 114 peripheral wall section, 116 recessed section,
116e Sealing part, 118 Overhang part, 118a Inner edge,
120 rim waterway, 122 water outlet, 124 rim waterway,
126a side wall, 126b shelf, 126c upper edge,
130 receiving surface portion, 132 turning portion, 134 convex surface portion,
160 1st water flow, 162 1st main flow, 164 2nd main flow,
170 second water stream, 172 first main stream, 174 second main stream,
180 Third water stream, 182 First main stream, 184 Second main stream,
188 vortex, 190 falling water flow, 192 falling water flow,
194 Falling water flow, M1 central axis.

Claims

A toilet body having a toilet bowl,
The toilet bowl portion includes a receiving surface portion for receiving filth, a rim portion connected to an upper edge portion of the receiving surface portion, and a concave portion formed to be depressed downward from a lower edge portion of the receiving surface portion. And
The concave portion has three standing walls including a left standing wall and a right standing wall corresponding to the left and right sides of a triangle whose bottom side is located behind the left and right sides in plan view, and a rear standing wall corresponding to the bottom side. Partitioned by
The rim portion, in plan view, a first water outlet provided on the side of the concave portion, a second water outlet provided in front of the concave portion, and a third water outlet provided behind the concave portion, There are three water outlets consisting of
The three spouts spout wash water in one circumferential direction along the rim portion ,
The wash water discharged from the three water outlets falls toward the three standing walls and forms a first main flow that flows along the standing walls, so that the receiving surface portion, the rim portion, and the three A flush toilet, wherein the water outlet forms the shape of the toilet bowl.

The wash water discharged from the three water outlets forms a second main flow that flows in the circumferential direction along the inner peripheral surface of the rim part,
In the second mainstream, the receiving surface portion, the rim portion, and the three water discharge ports of the toilet bowl portion overlap the wash water discharged from one of the three water discharge ports. The flush toilet according to claim 1 , which has a shape.

The first main flow of cleaning water discharged from the first water outlet is the first main flow of cleaning water discharged from the third water outlet, and the first main flow of cleaning water discharged from the third water outlet. The main flow is the first main flow of the wash water discharged from the second water discharge port, and the first main flow of the wash water discharged from the second water discharge port is the wash water discharged from the first water discharge port. a first main flow, so as to merge in the region of each of the recesses, claim 1, wherein the receiving and the surface portion and the rim portion and the three spout constitutes the shape of the flight basin portion Or the flush toilet according to 2.

The inner peripheral surface of the rim portion, claims 1 to 3, characterized in that the diverting part to bend a portion inwardly of the flow of washing water swirling along the inner peripheral surface in the circumferential direction is provided A flush toilet according to any one of the above.

The flush toilet according to claim 4 , wherein the turning portion has a convex surface portion in which a part of the inner peripheral surface of the rim portion projects inward from both sides in the circumferential direction.