JP2020026681A - Water closet - Google Patents

Water closet Download PDF

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JP2020026681A
JP2020026681A JP2018152216A JP2018152216A JP2020026681A JP 2020026681 A JP2020026681 A JP 2020026681A JP 2018152216 A JP2018152216 A JP 2018152216A JP 2018152216 A JP2018152216 A JP 2018152216A JP 2020026681 A JP2020026681 A JP 2020026681A
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toilet bowl
water
region
toilet
section
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JP7174567B2 (en
Inventor
嵩正 伊奈
Takamasa Ina
嵩正 伊奈
拓真 佐藤
Takuma Sato
拓真 佐藤
直人 米津
Naohito Yonezu
直人 米津
舞子 中川
Maiko Nakagawa
舞子 中川
秀和 三宅
Hidekazu Miyake
秀和 三宅
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Lixil Corp
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Lixil Corp
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Priority to JP2018152216A priority Critical patent/JP7174567B2/en
Priority to CN201910728128.2A priority patent/CN110820885A/en
Priority to US16/539,903 priority patent/US20200048888A1/en
Priority to DE102019121763.6A priority patent/DE102019121763A1/en
Publication of JP2020026681A publication Critical patent/JP2020026681A/en
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Abstract

To provide a technology capable of vertically widening a washing range of a continuous surface of a rim part.SOLUTION: A water closet includes: a toilet bowl part 16 that has a bowl-shaped filth receiving surface 24; a rim part 26 that forms an upper end side part of the toilet bowl part 16; and a water discharge part 42 that forms a rotational flow by discharging washing water into the toilet bowl part 16. An inner peripheral surface of the rim part 26 has a first surface area 90 that is provided on a side surface part 22R of the toilet bowl part 16, and second surface areas 92 and 94 that are provided on at least one surface part of front and rear surface parts 22F and 22B of the toilet bowl part 16. Each of the first surface area 90 and the second surface areas 92 and 94 is provided with a continuous surface 40 that continues without forming an overhang surface from an upper-end inner-edge part of the toilet bowl part 16 to an outer peripheral end of the filth receiving surface 24. An angle of inclination of the second surface areas 92 and 94 with respect to a vertical plane is more acute than an angle of inclination of the first surface area 90 with respect to the vertical plane.SELECTED DRAWING: Figure 2

Description

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

従来、リム部の内周面にオーバーハング面のない連続面を設けた水洗大便器が提案されている(特許文献1参照)。連続面は、オーバーハング面が形成されることなく、便鉢部の上端内縁部から汚物受け面の外周端部まで連続する面をいう。拭き掃除し難いオーバーハング面がリム部の内周面に形成されないため、良好な清掃性を得られる。   Conventionally, a flush toilet having a continuous surface without an overhang surface on an inner peripheral surface of a rim portion has been proposed (see Patent Document 1). The continuous surface refers to a surface that is continuous from the inner edge of the upper end of the toilet bowl to the outer peripheral end of the waste receiving surface without forming an overhang surface. Since an overhang surface that is difficult to wipe is not formed on the inner peripheral surface of the rim portion, good cleaning properties can be obtained.

特開2016−041880号公報JP-A-2006-041880

リム部の連続面の掃除の手間を軽減する観点から、その上下方向での洗浄水による洗浄範囲の広範囲化が求められることがある。特許文献1の開示技術は、このような観点から特段の工夫を講じたものではなく、改良の余地があった。   From the viewpoint of reducing the trouble of cleaning the continuous surface of the rim portion, it may be required to increase the range of cleaning with the cleaning water in the vertical direction. The technique disclosed in Patent Document 1 does not take any special measures from such a viewpoint, and has room for improvement.

本発明のある態様は、このような課題に鑑みてなされ、その目的の1つは、リム部の連続面の洗浄範囲を上下方向に広範囲化できる技術を提供することにある。   An aspect of the present invention has been made in view of such a problem, and one of its objects is to provide a technique capable of increasing a vertical range of a cleaning range of a continuous surface of a rim portion.

前述の課題を解決するための本発明の第1態様は水洗大便器である。第1態様の水洗大便器は、鉢状の汚物受け面を有する便鉢部と、前記便鉢部の上端側部分を形成するリム部と、前記便鉢部内に洗浄水を吐き出すことによって旋回流を形成する吐水部と、を備え、前記リム部の内周面は、前記便鉢部の側面部に設けられる第1面領域と、前記便鉢部の前面部及び後面部のうちの少なくとも一方の面部に設けられる第2面領域と、を有し、前記第1面領域及び前記第2面領域のそれぞれには、前記便鉢部の上端内縁部から前記汚物受け面の外周端部までオーバーハング面が形成されることなく連続する連続面が設けられ、前記第2面領域の鉛直面に対する傾斜角度は、前記第1面領域より鉛直面に対する傾斜角度より緩やかである。   A first aspect of the present invention for solving the above-mentioned problem is a flush toilet. The flush toilet according to the first aspect includes a toilet bowl having a bowl-shaped waste receiving surface, a rim forming an upper end portion of the toilet bowl, and a swirling flow by discharging washing water into the toilet bowl. And a water discharge portion that forms a rim portion, wherein the inner peripheral surface of the rim portion is at least one of a first surface region provided on a side surface portion of the toilet bowl portion and a front surface portion and a rear surface portion of the toilet bowl portion. And a second surface region provided on the surface portion of the stool portion, wherein each of the first surface region and the second surface region extends from an upper end inner edge of the toilet bowl portion to an outer peripheral end of the waste receiving surface. A continuous surface is provided without a hang surface, and the inclination angle of the second surface region with respect to the vertical plane is smaller than that of the first surface region with respect to the vertical surface.

第1態様によれば、第1面領域と第2面領域とで傾斜角度を同じにする場合と比べ、第2面領域で遠心力を受けた洗浄水が広い上下範囲に届き易くなる。これに伴い、その第2面領域の連続面での洗浄範囲を上下方向に広範囲化できる。   According to the first aspect, the washing water subjected to the centrifugal force in the second surface region can easily reach a wide vertical range as compared with the case where the inclination angle is the same in the first surface region and the second surface region. Accordingly, the cleaning range on the continuous surface of the second surface region can be widened in the vertical direction.

前述の課題を解決するための本発明の他の態様は水洗大便器である。他の態様の水洗大便器は、鉢状の汚物受け面を有する便鉢部と、前記便鉢部の上端側部分を形成するリム部と、前記便鉢部内に洗浄水を吐き出すことによって旋回流を形成する吐水部と、を備え、前記リム部の内周面は、平面視において、第1範囲内の曲率半径の曲面状をなす第1面領域と、前記第1範囲の曲率半径より大きい曲率半径の曲面状をなす第2面領域と、を有し、前記第1面領域及び前記第2面領域のそれぞれには、前記便鉢部の上端内縁部から前記汚物受け面の外周端部までオーバーハング面が形成されることなく連続する連続面が設けられ、前記第2面領域の鉛直面に対する傾斜角度は、前記第1面領域の鉛直面に対する傾斜角度より緩やかである。   Another embodiment of the present invention for solving the aforementioned problems is a flush toilet. A flush toilet according to another aspect has a toilet bowl portion having a bowl-shaped waste receiving surface, a rim portion forming an upper end portion of the toilet bowl portion, and a swirling flow by discharging washing water into the toilet bowl portion. And a water discharge portion that forms a first surface region having a curved surface with a radius of curvature within a first range in plan view, and a larger radius of curvature than the first range. A second surface region having a curved surface with a radius of curvature, wherein each of the first surface region and the second surface region includes an outer peripheral end of the filth receiving surface from an upper end inner edge of the toilet bowl portion. A continuous surface is formed without forming an overhang surface until the second surface region, and the inclination angle of the second surface region with respect to the vertical surface is gentler than the inclination angle of the first surface region with respect to the vertical surface.

この態様によれば、第1面領域と第2面領域とで傾斜角度を同じにする場合と比べ、第2面領域で遠心力を受けた洗浄水が広い上下範囲に届き易くなる。これに伴い、その第2面領域の連続面での洗浄範囲を上下方向に広範囲化できる。   According to this aspect, compared with the case where the inclination angle is the same between the first surface region and the second surface region, the washing water subjected to the centrifugal force in the second surface region can easily reach a wide vertical range. Accordingly, the cleaning range on the continuous surface of the second surface region can be widened in the vertical direction.

第1実施形態の便器装置を機能ブロックと併せて示す説明図である。It is explanatory drawing which shows the toilet bowl apparatus of 1st Embodiment together with a functional block. 図1のA−A断面図である。It is AA sectional drawing of FIG. 図1のB−B断面図である。It is BB sectional drawing of FIG. 第1実施形態の水洗大便器の平面図である。It is a top view of a flush toilet of a 1st embodiment. 図5(a)は、図6のC−C断面図であり、図5(b)は、図6のD−D断面図である。FIG. 5A is a cross-sectional view taken along line CC of FIG. 6, and FIG. 5B is a cross-sectional view taken along line DD of FIG. 図2の一部の拡大図である。FIG. 3 is an enlarged view of a part of FIG. 2. 図7(a)〜図7(c)のそれぞれは、図6のI−I、II−II、III−IIIの断面図である。7A to 7C are cross-sectional views taken along lines II, II-II, and III-III in FIG. 図8(a)、図8(b)のそれぞれは、図6のIV−IV、V−Vの断面図である。8A and 8B are cross-sectional views taken along lines IV-IV and VV in FIG. 第1実施形態の水洗大便器内での洗浄水の流れ方を示す図である。It is a figure which shows the flow of wash water in the flush toilet of 1st Embodiment. 第1実施形態の水洗大便器を左上側の後方から見た図である。It is the figure which looked at the flush toilet of 1st Embodiment from the upper left rear. 第1実施形態の水洗大便器の一部を左側から見た断面図である。It is sectional drawing which looked at a part of flush toilet of 1st Embodiment from the left side. 図1のE−E断面図である。It is EE sectional drawing of FIG. 図1のF−F断面図である。It is FF sectional drawing of FIG. 洗浄水に作用する遠心力の説明図である。It is explanatory drawing of the centrifugal force which acts on washing water. 第2実施形態の水洗大便器の一部を示す側面断面図である。It is a side sectional view showing a part of flush toilet of a 2nd embodiment.

以下、実施形態、変形例では、同一の構成要素に同一の符号を付し、重複する説明を省略する。各図面では、説明の便宜のため、構成要素の一部を適宜省略したり、構成要素の寸法を適宜拡大、縮小して示す。図面は符号の向きに合わせて見るものとする。   Hereinafter, in the embodiments and the modified examples, the same components are denoted by the same reference numerals, and overlapping description will be omitted. In each of the drawings, for convenience of description, some of the components are appropriately omitted, or the dimensions of the components are appropriately enlarged or reduced. The drawings should be viewed according to the orientation of the reference numerals.

(第1の実施の形態)
第1実施形態の水洗大便器10(以下、単に大便器10という)を用いた便器装置12の概要を説明する。図1は、便器装置12を機能ブロックと併せて示す説明図である。図1は、大便器10の平面図でもある。図2は、図1のA−A断面図であり、図3は、図1のB−B断面図である。
(First Embodiment)
An outline of a toilet device 12 using a flush toilet 10 (hereinafter simply referred to as the toilet 10) of the first embodiment will be described. FIG. 1 is an explanatory diagram showing the toilet apparatus 12 together with functional blocks. FIG. 1 is also a plan view of the toilet bowl 10. FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG.

以下、大便器10の前後方向X、左右方向Y及び上下方向Zを用いて説明する。これら方向軸は直交座標系を構成し、大便器10に取り付けられる便座(不図示)に通常の姿勢で座る着座者の向きに対応する。前後方向X、左右方向Yは水平方向、上下方向Zは鉛直方向である。   Hereinafter, description will be made using the front-back direction X, the left-right direction Y, and the up-down direction Z of the toilet bowl 10. These direction axes constitute an orthogonal coordinate system, and correspond to the direction of a seated person who sits on a toilet seat (not shown) attached to the toilet bowl 10 in a normal posture. The front-rear direction X and the left-right direction Y are horizontal directions, and the up-down direction Z is a vertical direction.

便器装置12は、大便器10の他に、大便器10に洗浄水を供給する洗浄水供給装置14を備える。洗浄水供給装置14は、たとえば、貯水タンクを用いて構成されるが、フラッシュバルブ等を用いて構成されてもよい。   The toilet device 12 includes a flush water supply device 14 that supplies flush water to the toilet 10 in addition to the toilet 10. The cleaning water supply device 14 is configured using, for example, a water storage tank, but may be configured using a flash valve or the like.

本実施形態の大便器10は洋風大便器である。本実施形態の大便器10は陶器を素材とするが、樹脂等を素材としてもよい。大便器10は、便鉢部16と、便鉢部16の底部に接続される便器排水路18と、を備える。大便器10の上面部には、局部洗浄装置等の機械装置(不図示)の一部が収まる凹部20が形成される。便器排水路18は、便鉢部16内から下水側水路に排出される汚物や水の通り道となる。   The toilet 10 of the present embodiment is a Western-style toilet. The toilet bowl 10 of the present embodiment is made of pottery, but may be made of resin or the like. The toilet bowl 10 includes a toilet bowl 16 and a toilet drainage channel 18 connected to the bottom of the toilet bowl 16. A recess 20 is formed on the upper surface of the toilet bowl 10 to accommodate a part of a mechanical device (not shown) such as a local cleaning device. The toilet drainage channel 18 is a passage for dirt and water discharged from the toilet bowl 16 to the sewage-side waterway.

便鉢部16は、汚物を受けるための鉢状の汚物受け面24と、便鉢部16の上端側部分を形成するリム部26とを有する。リム部26の内周面は、便鉢部16の上端内縁部16aから汚物受け面24の外周端部24aまでの範囲に設けられる。以下、便鉢部16の周方向、径方向を用いて説明する。「周方向」は、平面視において、便鉢部16の上端内縁部16aの中心Cp周りを回る方向をいい、「径方向」は、その中心Cpを通る鉛直線に直交する方向をいう。   The toilet bowl 16 has a bowl-shaped waste receiving surface 24 for receiving waste and a rim 26 forming an upper end portion of the toilet bowl 16. The inner peripheral surface of the rim portion 26 is provided in a range from the upper end inner edge portion 16 a of the toilet bowl portion 16 to the outer peripheral end portion 24 a of the waste receiving surface 24. Hereinafter, a description will be given using the circumferential direction and the radial direction of the toilet bowl 16. The “circumferential direction” refers to a direction around the center Cp of the upper end inner edge 16a of the toilet bowl 16 in plan view, and the “radial direction” refers to a direction perpendicular to a vertical line passing through the center Cp.

便鉢部16は、汚物受け面24の下端縁部24bから下方に窪む溜水部28を有する。溜水部28は、便鉢部16の底部を形成するとともに有底状をなす。溜水部28の底部には便器排水路18の入口18aが開口する。溜水部28には封水の一部となる溜水(不図示)が溜められる。   The toilet bowl part 16 has a water storage part 28 which is depressed downward from the lower end edge part 24 b of the waste receiving surface 24. The reservoir section 28 forms the bottom of the toilet bowl section 16 and has a bottomed shape. An inlet 18 a of the toilet drainage channel 18 is opened at the bottom of the reservoir 28. Reservoir (not shown) that is a part of the sealed water is stored in the reservoir 28.

図4は、大便器10の他の平面図である。リム部26の内周面は、平面視において、前端を含む前側領域30Fと、後端を含む後側領域30Bと、前側領域30Fと後側領域30Bを繋ぐ左右の中間領域30Sとを有する。前側領域30Fは、平面視において、第1範囲R1内の曲率半径の曲面状をなし、後側領域30Bは、第2範囲R2内の曲率半径の曲面状をなす。中間領域30Sは、第1範囲R1や第2範囲R2の曲率半径より大きい第3範囲R3内の曲率半径の曲面状をなす。たとえば、第1範囲R1は70mm〜120mm、第2範囲R2は100mm〜130mm、第3範囲R3は200mm〜530mmである。このようにリム部26の内周面は、平面視において、前側領域30Fと後側領域30Bでの曲率半径が中間領域30Sでの曲率半径より小さいオーバル状をなす。なお、第1範囲R1と第2範囲R2は、第3範囲R3より小さい曲率半径であればよく、それらの間での大小関係は問わない。   FIG. 4 is another plan view of the toilet bowl 10. The inner peripheral surface of the rim portion 26 has, in plan view, a front region 30F including a front end, a rear region 30B including a rear end, and left and right intermediate regions 30S connecting the front region 30F and the rear region 30B. The front region 30F has a curved surface with a radius of curvature within the first range R1 in plan view, and the rear region 30B has a curved surface with a radius of curvature within the second range R2. The intermediate region 30S has a curved surface with a radius of curvature within a third range R3 that is larger than the radius of curvature of the first range R1 and the second range R2. For example, the first range R1 is 70 mm to 120 mm, the second range R2 is 100 mm to 130 mm, and the third range R3 is 200 mm to 530 mm. As described above, the inner peripheral surface of the rim portion 26 has an oval shape in plan view in which the radius of curvature in the front region 30F and the rear region 30B is smaller than the radius of curvature in the intermediate region 30S. Note that the first range R1 and the second range R2 only need to have a radius of curvature smaller than the third range R3, and there is no limitation on the magnitude relationship between them.

以下、便鉢部16を四つに区分して説明する。詳しくは、便鉢部16の左右両側に設けられる一対の側面部22R、22Lと、便鉢部16の前側に設けられる前面部22Fと、便鉢部16の後側に設けられる後面部22Bとに便鉢部16を区分する。一対の側面部22R、22Lには、左右一方側となる右側の右側面部22Rと、左右他方側となる左側の左側面部22Lとが含まれる。   Hereinafter, the toilet bowl section 16 will be described by dividing it into four sections. Specifically, a pair of side surface portions 22R and 22L provided on both left and right sides of the toilet bowl portion 16, a front surface portion 22F provided on the front side of the toilet bowl portion 16, and a rear surface portion 22B provided on the rear side of the toilet bowl portion 16 The toilet bowl part 16 is divided. The pair of side surfaces 22R and 22L include a right side surface 22R on the right side which is one side on the left and right, and a left side surface portion 22L on the left side which is the other side on the left and right.

これらは、次の等分線Lb1〜Lb3と左右中心線Lcにより区分される。等分線Lb1〜Lb3には、平面視にて、便鉢部16の内面部分の最大前後寸法Laを四等分する三つの等分線Lb1〜Lb3のうち、最も前側の前側等分線Lb1と、最も後側の後側等分線Lb3が含まれる。左右中心線Lcは、平面視にて、便鉢部16の内面部分の最大左右寸法を二等分する等分線をいう。等分線Lb1〜Lb3は左右方向Yに沿って延び、左右中心線Lcは前後方向Xに沿って延びる。   These are separated by the next equal lines Lb1 to Lb3 and the left and right center lines Lc. Among the three equal lines Lb1 to Lb3, among the three equal lines Lb1 to Lb3 that divide the maximum front-rear dimension La of the inner surface portion of the toilet bowl 16 into four parts in plan view, the frontmost front equal line Lb1 And the rearmost rear bisector Lb3. The left-right center line Lc refers to a bisector that bisects the maximum left-right dimension of the inner surface portion of the toilet bowl 16 in plan view. The equal lines Lb1 to Lb3 extend along the left-right direction Y, and the left-right center line Lc extends along the front-rear direction X.

一対の側面部22R、22Lは、前側等分線Lb1と後側等分線Lb3の間にあり、前面部22Fは、前側等分線Lb1より前側にあり、後面部22Bは、後側等分線Lb3より後側にある。右側面部22Rは、左右中心線Lcより右側にあり、左側面部22Lは、左右中心線Lcより左側にある。   The pair of side surfaces 22R and 22L are located between the front equal line Lb1 and the rear equal line Lb3, the front surface 22F is located forward of the front equal line Lb1, and the rear surface 22B is equal to the rear equal line. Behind the line Lb3. The right side portion 22R is on the right side of the left and right center line Lc, and the left side portion 22L is on the left side of the left and right center line Lc.

図1〜図3を参照する。リム部26の内周面には開口部32が形成される。本実施形態の開口部32は便鉢部16の左右一方側の側面部(右側面部22R)のみに形成され、左右他方側の側面部(左側面部22L)や、前面部22F及び後面部22Bには形成されない。   Please refer to FIG. An opening 32 is formed in the inner peripheral surface of the rim 26. The opening 32 of the present embodiment is formed only on one of the left and right side surfaces (the right side portion 22R) of the toilet bowl portion 16, and is formed on the left and right side surfaces (the left side portion 22L), the front surface portion 22F, and the rear surface portion 22B. Is not formed.

リム部26の内周面には、便鉢部16の前面部22F及び後面部22Bのうちの一方の面部22Xにおいて、便鉢部16の上端内縁部16aから汚物受け面24の外周端部24aまでオーバーハング面が形成されることなく連続する連続面40が設けられる。本明細書でのオーバーハング面とは、鉛直面に対する傾斜角度が60°以上となる下向きの面であって、吐水口44(後述する)とは異なる箇所に形成される面をいう。ここでの「一方の面部22X」とは、本実施形態では便鉢部16の前面部22Fをいう。この一方の面部22Xには、便鉢部16の前後方向Xの一端部16bとなる便鉢部16の前端部が設けられる。   On the inner peripheral surface of the rim portion 26, at one of the front surface portion 22 </ b> F and the rear surface portion 22 </ b> B of the toilet bowl portion 16, the outer peripheral end 24 a of the waste receiving surface 24 extends from the upper end inner edge portion 16 a of the toilet bowl portion 16. A continuous surface 40 that is continuous without forming an overhang surface is provided. The overhang surface in this specification is a downward surface having an inclination angle of 60 ° or more with respect to a vertical plane, and is a surface formed at a location different from the water outlet 44 (described later). The “one surface portion 22X” here refers to the front surface portion 22F of the toilet bowl 16 in the present embodiment. The front end of the toilet bowl 16 which is one end 16b of the toilet bowl 16 in the front-rear direction X is provided on the one surface 22X.

本実施形態の連続面40は、開口部32以外の箇所にて、便鉢部16の全周に亘る範囲でリム部26の内周面に設けられる。詳しくは、連続面40は、便鉢部16の前面部22F、後面部22B及び左側面部22Lの全部の周方向範囲に設けられる。連続面40は、開口部32以外の箇所にて、便鉢部16の右側面部22Rの全部の周方向範囲に設けられる。   The continuous surface 40 of the present embodiment is provided on the inner peripheral surface of the rim portion 26 in a range other than the opening portion 32 over the entire circumference of the toilet bowl portion 16. Specifically, the continuous surface 40 is provided in the entire circumferential range of the front surface portion 22F, the rear surface portion 22B, and the left side surface portion 22L of the toilet bowl portion 16. The continuous surface 40 is provided in a portion other than the opening 32 in the entire circumferential range of the right side portion 22 </ b> R of the toilet bowl 16.

本実施形態の連続面40は、便鉢部16の上端内縁部16aから下方に向かうにつれて、徐々に径方向内側に延びるように設けられる。これにより、下方に向かう途中で径方向外側に延びる箇所が設けられる場合と比べ、連続面40に付いた汚れを目視により把握し易くなり、清掃作業の容易化を図れる。同様の観点から、連続面40は、便鉢部16の上端内縁部16aから実質的に鉛直下方に向かって延びるように設けられてもよい。この他にも、連続面40は、下方に向かうにつれて径方向内側に延びる部位と、実質的に鉛直下方に向かって延びる部位との組み合わせでもよい。本明細書での「実質的」とは、言及している条件を厳密に満たす場合に限らず、寸法公差や製造誤差等の誤差の分だけ位置がずれる場合も含まれる。   The continuous surface 40 of the present embodiment is provided so as to gradually extend radially inward from the upper end inner edge portion 16a of the toilet bowl portion 16 downward. This makes it easier to visually grasp the dirt on the continuous surface 40 than when a portion extending radially outward is provided on the way downward, thereby facilitating the cleaning operation. From a similar viewpoint, the continuous surface 40 may be provided to extend substantially vertically downward from the upper end inner edge 16a of the toilet bowl 16. In addition, the continuous surface 40 may be a combination of a portion extending radially inward as it goes downward and a portion extending substantially vertically downward. The term “substantially” in the present specification includes not only a case where the above-mentioned conditions are strictly satisfied but also a case where the position is shifted by an error such as a dimensional tolerance or a manufacturing error.

大便器10は、便鉢部16内に洗浄水を吐き出すことによって旋回流Fa(後述の図9参照)を形成する吐水部42を備える。吐水部42は、便鉢部16の開口部32を通して便鉢部16内に洗浄水を吐き出す。本実施形態の吐水部42は開口部32の奥側に設けられ、平面視にて外部に露出しない位置に設けられる。旋回流Faは、便鉢部16の一方の面部22X(前面部22F)に設けられる便鉢部16の前後方向Xの一端部16bを経由してから、便鉢部16の前面部22F及び後面部22Bのうち他方の面部に設けられる便鉢部16の他端部16cを経由する。本実施形態での他端部16cは便鉢部16の後端部である。   The toilet bowl 10 includes a water discharge unit 42 that forms a swirling flow Fa (see FIG. 9 described later) by discharging cleaning water into the toilet bowl unit 16. The water discharging section 42 discharges the washing water into the toilet bowl 16 through the opening 32 of the toilet bowl 16. The water discharging section 42 of the present embodiment is provided at the back side of the opening 32 and is provided at a position not exposed to the outside in plan view. The swirling flow Fa passes through one end portion 16b in the front-rear direction X of the toilet bowl portion 16 provided on the one surface portion 22X (the front surface portion 22F) of the toilet bowl portion 16 and then to the front surface portion 22F of the toilet bowl portion 16 and to the rear. It passes through the other end 16c of the toilet bowl 16 provided on the other surface of the surface 22B. The other end 16 c in the present embodiment is a rear end of the toilet bowl 16.

大便器10は、図2に示すように、便器排水路18の下流側に向けて洗浄水を吐き出すジェット吐水口41を備える。本実施形態のジェット吐水口41は大便器10に取り付けられるジェットノズル43の先端部に形成される。   As shown in FIG. 2, the toilet 10 includes a jet water outlet 41 that discharges flush water toward a downstream side of the toilet drainage channel 18. The jet water outlet 41 of the present embodiment is formed at the tip of a jet nozzle 43 attached to the toilet 10.

図5は、図1の一部を示す平面断面図である。図5(a)は、後述の図6のC−C断面図、図5(b)は、図6のD−D断面図である。吐水部42は、リム部26の内周面に開口する吐水口44と、洗浄水供給装置14から供給された洗浄水を吐水口44に導く通水路46とを有する。本実施形態の吐水口44は、前方に向けて開放しており、便鉢部16内に旋回流Faの旋回方向Dtとなる周方向の一方側(図5の紙面で反時計回り方向)に向けて洗浄水を吐き出す。   FIG. 5 is a plan sectional view showing a part of FIG. FIG. 5A is a cross-sectional view taken along the line CC of FIG. 6 described below, and FIG. 5B is a cross-sectional view taken along the line DD of FIG. The water discharge section 42 has a water discharge port 44 opened on the inner peripheral surface of the rim section 26, and a water passage 46 that guides the cleaning water supplied from the cleaning water supply device 14 to the water discharge port 44. The water outlet 44 of the present embodiment is open forward, and is located in the toilet bowl 16 on one side in the circumferential direction (counterclockwise direction on the paper surface of FIG. 5) which is the turning direction Dt of the swirling flow Fa. Spray the washing water toward it.

図6は、図2の一部の拡大図である。図7(a)〜図7(c)のそれぞれは、図6のI−I、II−II、III−IIIの断面図である。図8(a)、図8(b)のそれぞれは、図6のIV−IV、V−Vの断面図である。   FIG. 6 is an enlarged view of a part of FIG. 7A to 7C are cross-sectional views taken along lines II, II-II, and III-III in FIG. 8A and 8B are cross-sectional views taken along lines IV-IV and VV in FIG.

図5〜図8に示すように、大便器10は、吐水部42が吐き出す洗浄水を旋回方向Dtに導く導水路48を備える。導水路48は、洗浄水を受ける棚面50とリム部26の内周面とが構成する。棚面50は、汚物受け面24の外周側部分に設けられる。本実施形態の棚面50は、棚面50の内周端部を構成する凸曲面部52と、その凸曲面部52より外周側に設けられる平坦面部54と、棚面50の外周端部を構成する曲面部58とを有する。棚面50は、その凸曲面部52を介して棚面50より下方に位置する汚物受け面24の凹曲面部56に連なる。平坦面部54の鉛直断面は、その凹曲面部56の上端部より緩やかな勾配となるように形成される。   As shown in FIGS. 5 to 8, the toilet bowl 10 includes a water guide channel 48 that guides the wash water discharged from the water discharge section 42 in the turning direction Dt. The water guide channel 48 includes a shelf surface 50 that receives the wash water and an inner peripheral surface of the rim portion 26. The shelf surface 50 is provided on an outer peripheral portion of the waste receiving surface 24. The shelf surface 50 of the present embodiment includes a convex curved surface portion 52 that forms the inner peripheral end of the shelf surface 50, a flat surface portion 54 provided on the outer peripheral side of the convex curved surface portion 52, and an outer peripheral end of the shelf surface 50. And a curved surface portion 58. The shelf surface 50 is connected to the concave curved surface portion 56 of the waste receiving surface 24 located below the shelf surface 50 via the convex curved surface portion 52. The vertical cross section of the flat surface portion 54 is formed to have a gentler gradient than the upper end portion of the concave curved surface portion 56.

本実施形態の棚面50は、図1に示すように、便鉢部16の後面部22Bから一対の側面部22R、22Lのそれぞれを介して前面部22Fまでの範囲で連続するように形成される。本実施形態の棚面50は、一対の側面部22R、22Lや後面部22Bにて周方向の全範囲に亘り形成され、前面部22Fにて周方向の一部の範囲で形成される。   As shown in FIG. 1, the shelf surface 50 of the present embodiment is formed so as to be continuous from the rear surface portion 22B of the toilet bowl portion 16 to the front surface portion 22F via each of the pair of side surface portions 22R and 22L. You. The shelf surface 50 of the present embodiment is formed over the entire range in the circumferential direction by the pair of side surfaces 22R and 22L and the rear surface 22B, and is formed in a part of the circumferential direction by the front surface 22F.

図5〜図8に示すように、本実施形態の導水路48の一部は、平面視において、吐水口44から旋回流Faの旋回方向Dtに延びるとともに、開口部32を通り抜けるように形成される。本実施形態の棚面50は、吐水口44の底面に滑らかに連なるように形成される。   As shown in FIGS. 5 to 8, a part of the water conduit 48 of the present embodiment is formed so as to extend from the water outlet 44 in the swirling direction Dt of the swirling flow Fa and pass through the opening 32 in plan view. You. The shelf surface 50 of the present embodiment is formed so as to smoothly connect to the bottom surface of the water outlet 44.

曲面部58は、導水路48の下側内隅部を構成するとともに凹曲面状をなす。曲面部58は、旋回流Faの旋回方向Dtに向かって順に、第1定区間60、増加区間62、第2定区間64、減少区間66、第3定区間68を有する。曲面部58は、第1定区間60から第3定区間68までの範囲で鉛直断面での曲率半径が滑らかに変化するように設けられる。これは、この範囲で曲率半径が急激に変化して段差部が形成されないことを意味する。   The curved surface portion 58 forms a lower inner corner portion of the water conduit 48 and has a concave curved surface shape. The curved surface portion 58 has a first constant section 60, an increasing section 62, a second constant section 64, a decreasing section 66, and a third constant section 68 in order in the turning direction Dt of the swirling flow Fa. The curved surface portion 58 is provided such that a radius of curvature in a vertical section smoothly changes in a range from the first constant section 60 to the third constant section 68. This means that the radius of curvature changes abruptly in this range and no step is formed.

第1定区間60は、吐水口44に連なり、旋回流Faの旋回方向Dtに向かって、第1曲率半径Raで実質的に一定の曲率半径に形成される。   The first constant section 60 is continuous with the water discharge port 44 and is formed to have a substantially constant radius of curvature with a first radius of curvature Ra toward the turning direction Dt of the swirling flow Fa.

増加区間62は、第1定区間60に連なり、旋回流Faの旋回方向Dtに向かって、第1曲率半径Raから第2曲率半径Rbに曲率半径が連続的に増加するように形成される。   The increasing section 62 is continuous with the first constant section 60 and is formed such that the radius of curvature continuously increases from the first radius of curvature Ra to the second radius of curvature Rb toward the swirling direction Dt of the swirling flow Fa.

第2定区間64は、増加区間62と減少区間66を連ね、旋回流Faの旋回方向Dtに向かって、第2曲率半径Rbで実質的に一定の曲率半径に形成される。   The second constant section 64 connects the increasing section 62 and the decreasing section 66 and is formed to have a substantially constant radius of curvature at the second radius of curvature Rb toward the turning direction Dt of the swirling flow Fa.

減少区間66は、第3定区間68に連なり、旋回流Faの旋回方向Dtに向かって、第2曲率半径Rbから第3曲率半径Rcに曲率半径が連続的に減少するように形成される。   The decreasing section 66 is continuous with the third constant section 68 and is formed such that the radius of curvature continuously decreases from the second radius of curvature Rb to the third radius of curvature Rc toward the swirling direction Dt of the swirling flow Fa.

第3定区間68は、旋回流Faの旋回方向Dtに向かって、第3曲率変形Rcで実質的に一定の曲率半径に形成される。第3曲率半径Rcは、第3定区間68と左右対称の位置に設けられる曲面部58の一部58a(図1参照)と実質的に同じ曲率半径に設定される。   The third constant section 68 is formed to have a substantially constant radius of curvature by the third curvature deformation Rc toward the turning direction Dt of the swirling flow Fa. The third radius of curvature Rc is set to be substantially the same as the radius of curvature 58a (see FIG. 1) of the curved surface portion 58 provided at a position symmetrical to the third constant section 68 in the left-right direction.

図5に示すように、増加区間62は、吐水部42から便鉢部16の前後方向Xの一端部16b(前端部)に至る洗浄水経路70(図1参照)上に設けられる上方誘導部72を構成する。ここでの洗浄水経路70とは、吐水部42から吐き出された洗浄水が便鉢部16内を伝う経路をいう。この上方誘導部72は、詳細を後述するように、吐水部42が吐き出す洗浄水の少なくとも一部を上方に誘導する。   As shown in FIG. 5, the increasing section 62 is an upper guiding section provided on a washing water path 70 (see FIG. 1) from the water discharging section 42 to one end 16 b (front end) of the toilet bowl 16 in the front-rear direction X. 72. The washing water path 70 here is a path along which the washing water discharged from the water discharging section 42 travels inside the toilet bowl section 16. The upper guide portion 72 guides at least a portion of the wash water discharged from the water discharge portion 42 upward, as described in detail later.

増加区間62は、便鉢部16の側面部22Rに設けられる内方誘導部74を構成する。この内方誘導部74は、詳細を後述するように、自らと衝突した洗浄水の一部を径方向内側に誘導する。   The increase section 62 constitutes an inward guiding section 74 provided on the side surface section 22R of the toilet bowl section 16. As will be described in detail later, the inward guiding portion 74 guides a portion of the washing water that has collided with itself to the radial inside.

本実施形態の増加区間62の少なくとも一部は、平面視において、開口部32の奥側かつ吐水口44の外側にて、吐水口44から延びる吐水口44の中心線Ldと交わる位置に設けられる。本実施形態の増加区間62は、便鉢部16の一対の側面部22R、22Lのうち、便鉢部16の一方の面部22X(前面部22F)に対して旋回方向Dtとは周方向の反対側(時計回り方向)に隣り合う便鉢部16の側面部22Rに設けられる。増加区間62は、吐水部42の吐水口44より下流側にて吐水口44の近傍に設けられる。ここでの「近傍」とは、吐水口44から20mm以内の範囲をいう。ここで説明した条件は、前述の上方誘導部72や内方誘導部74も同様に満たす。   At least a part of the increase section 62 of the present embodiment is provided at a position that intersects the center line Ld of the water outlet 44 extending from the water outlet 44 on the inner side of the opening 32 and outside the water outlet 44 in plan view. . In the increased section 62 of the present embodiment, the turning direction Dt is opposite to the circumferential direction with respect to one surface portion 22X (front surface portion 22F) of the toilet bowl portion 16 of the pair of side surface portions 22R and 22L of the toilet bowl portion 16. It is provided on the side surface 22R of the toilet bowl 16 adjacent to the side (clockwise direction). The increase section 62 is provided in the vicinity of the water outlet 44 on the downstream side of the water outlet 44 of the water discharge part 42. Here, “near” means a range within 20 mm from the water outlet 44. The conditions described here are also satisfied by the above-described upper guiding section 72 and inner guiding section 74.

以上の便器装置12による洗浄方法を説明する。本実施形態の便器装置12は、水の落差を用いて汚物を押し流す洗い落とし式の洗浄方式によって汚物を排出する。洗浄水供給装置14は、所定の洗浄開始条件を満たすと、所定の水量の洗浄水を吐水部42に供給する。洗浄開始条件は、たとえば、レバー等の操作部材、または、リモートコントローラ、スマートフォン等の電気機器によって洗浄水供給装置14が洗浄開始操作を受けることである。   A cleaning method using the above toilet device 12 will be described. The toilet device 12 of the present embodiment discharges waste by a flush-type washing method in which the waste is flushed using a head of water. The cleaning water supply device 14 supplies a predetermined amount of cleaning water to the water discharging unit 42 when a predetermined cleaning start condition is satisfied. The cleaning start condition is, for example, that the cleaning water supply device 14 receives a cleaning start operation by an operation member such as a lever or an electric device such as a remote controller or a smartphone.

図9は、洗浄水の流れ方を示す図である。本図では、洗浄水の流れ方向に矢印を付して示す。吐水部42は、洗浄水供給装置14から供給された洗浄水を便鉢部16内に吐き出す。吐水部42から吐き出された洗浄水は、便鉢部16内を旋回する旋回流Faを形成する。旋回流Faは、便鉢部16の前面部22F、左側面部22L及び後面部22Bを経由して右側面部22Rを前方に向かうように形成される。旋回流Faは、便鉢部16の側面部22R、22Lや後面部22Bを経由するときに、棚面50を伝うように形成される。旋回流Faは主流として形成される。本明細書での「主流」とは、洗浄水の一部が部分的に集まった状態で流れるすじ状の流れをいう。旋回流Faを形成する洗浄水の一部は便鉢部16内を旋回する途中に徐々に分流Fbに分かれ、その分流Fbは便鉢部16の底側に向けて流れ落ちる。   FIG. 9 is a diagram showing how the washing water flows. In this drawing, the flow direction of the cleaning water is indicated by an arrow. The water discharging section 42 discharges the cleaning water supplied from the cleaning water supply device 14 into the toilet bowl section 16. The washing water spouted from the water spouting section 42 forms a swirling flow Fa swirling in the toilet bowl section 16. The swirling flow Fa is formed so as to go forward on the right side portion 22R via the front surface portion 22F, the left side surface portion 22L, and the rear surface portion 22B of the toilet bowl portion 16. The swirling flow Fa is formed so as to travel along the shelf surface 50 when passing through the side surface portions 22R and 22L of the toilet bowl portion 16 and the rear surface portion 22B. The swirling flow Fa is formed as a main flow. The “main stream” in the present specification refers to a streak-like flow that flows in a state where a part of the washing water is partially collected. A part of the washing water forming the swirling flow Fa is gradually divided into a split flow Fb while turning in the toilet bowl 16, and the split flow Fb flows down toward the bottom of the toilet bowl 16.

便鉢部16の底部側に向かう水流Fb、Fg(水流Fgは後述する)は、便器排水路18の入口18aに汚物を押し込むような流れとなる。このような水流Fb、Fgによって、便鉢部16内の汚物が便器排水路18を通して排出される。   The water flows Fb and Fg (the water flow Fg will be described later) heading toward the bottom of the toilet bowl 16 have a flow that pushes dirt into the inlet 18 a of the toilet drainage channel 18. The wastewater in the toilet bowl 16 is discharged through the toilet drainage channel 18 by such water flows Fb and Fg.

図2を参照する。ジェット吐水口41は、洗浄水供給装置14から供給された洗浄水を便器排水路13内で下流側に向けて吐き出す。本実施形態のジェット吐水口41は、便器排水路18内で洗浄水が下流側に向けて流れている途中に洗浄水を吐き出す。ジェット吐水口41から吐き出された洗浄水は、便器排水路18内を下流側に向かう流れの水勢を増幅させる。   Please refer to FIG. The jet water outlet 41 discharges the wash water supplied from the wash water supply device 14 toward the downstream side in the toilet drainage channel 13. The jet water outlet 41 of the present embodiment discharges the flush water while the flush water is flowing toward the downstream side in the toilet drainage channel 18. The flush water spouted from the jet spout 41 amplifies the flow of the water flowing downstream in the toilet drainage channel 18.

図10、図11は、洗浄水の流れ方を模式的に示す図である。図10は、大便器10を左上側の後方から見た図であり、図11は、大便器10の一部を左側から見た断面図である。図10では、説明の便宜のため、図1の左右中心線Lcが通る箇所に線Lc’を付す。また、図10では、リム部26の内周面を伝う過程で洗浄水が届く領域の上辺に線Leを付す。   FIG. 10 and FIG. 11 are diagrams schematically showing how the washing water flows. 10 is a view of the toilet 10 as viewed from the upper left rear, and FIG. 11 is a cross-sectional view of a part of the toilet 10 as viewed from the left. In FIG. 10, for convenience of description, a line Lc ′ is attached to a place where the left and right center line Lc in FIG. 1 passes. Also, in FIG. 10, a line Le is attached to the upper side of the area where the washing water reaches in the process of traveling along the inner peripheral surface of the rim portion 26.

吐水部42から吐き出された洗浄水の少なくとも一部は、上方誘導部72(導水路48の増加区間62)との衝突により上方に誘導されて第1誘導流Fcを形成する。このように上方誘導部72(導水路48の増加区間62)は、遠心力を用いることなく、洗浄水の少なくとも一部を上方に誘導する。第1誘導流Fcは、前述の旋回流Faの一部として形成される。本実施形態の第1誘導流Fcは、増加区間62により誘導されることで、汚物受け面24から離れるように跳ね上げられる。第1誘導流Fcは、前述の洗浄水経路70上において、リム部26の内周面を旋回方向Dtに伝いつつ、上向きに流れてから自重により下向きに流れるように形成される。本実施形態の第1誘導流Fcは、前述の洗浄水経路70で開口部32の外側にて最高点Phに達するように形成される。   At least a part of the wash water discharged from the water discharge part 42 is guided upward by the collision with the upper guide part 72 (the increased section 62 of the water guide channel 48) to form the first guided flow Fc. As described above, the upper guide portion 72 (the increased section 62 of the water conduit 48) guides at least a portion of the wash water upward without using centrifugal force. The first induced flow Fc is formed as a part of the swirl flow Fa described above. The first induced flow Fc of the present embodiment is jumped away from the waste receiving surface 24 by being guided by the increasing section 62. The first induced flow Fc is formed so as to flow upward along the inner peripheral surface of the rim portion 26 and then flow downward due to its own weight on the above-described cleaning water path 70 while traveling in the turning direction Dt. The first induced flow Fc of the present embodiment is formed so as to reach the highest point Ph outside the opening 32 in the aforementioned washing water path 70.

吐水部42から吐き出された洗浄水の一部は、内方誘導部74(導水路48の増加区間62)と衝突して拡散することによって、便鉢部16の径方向内側に誘導されて第2誘導流Fdを形成する。第2誘導流Fdは、棚面50から凹曲面部56に流れ落ちるように形成される。第2誘導流Fdは、便鉢部16内に形成される旋回流Faと合流する。これらの合流箇所Sa(図9も参照)は、平面視にて、リム部26の内周面より径方向内側、つまり、オーバーハング面がない箇所となる。   A part of the washing water spouted from the water spouting section 42 collides with the inner guide section 74 (the increased section 62 of the water guide channel 48) and is diffused, and is guided to the radial inside of the toilet bowl section 16, and the second washing water is discharged. Two induced flows Fd are formed. The second induced flow Fd is formed so as to flow down from the shelf surface 50 to the concave curved surface portion 56. The second induced flow Fd merges with the swirl flow Fa formed in the toilet bowl 16. These converging points Sa (see also FIG. 9) are radially inward from the inner peripheral surface of the rim portion 26 in a plan view, that is, there are no overhanging surfaces.

吐水部42から吐き出された洗浄水の一部は、導水路48の増加区間62(上方誘導部72及び内方誘導部74)により上方や径方向内側に誘導されることなく直進する直進流Feを形成する。直進流Feは、前述の旋回流Faの一部として形成される。本実施形態では、吐水部42から吐き出された洗浄水の一部が第1誘導流Fcを形成し、洗浄水の更に一部が第2誘導流Fdを形成し、洗浄水の残部が直進流Feを形成する。直進流Feは、前述の洗浄水経路70上にてリム部26の内周面を旋回方向Dtに伝わる。   A part of the washing water discharged from the water discharging part 42 flows straight without being guided upward or radially inward by the increasing section 62 (the upper guiding part 72 and the inner guiding part 74) of the water conduit 48. To form The straight flow Fe is formed as a part of the swirl flow Fa described above. In the present embodiment, a part of the washing water discharged from the water discharging part 42 forms the first induced flow Fc, a part of the washing water forms the second induced flow Fd, and the remaining part of the washing water flows straight. Form Fe. The straight flow Fe is transmitted in the turning direction Dt on the inner peripheral surface of the rim portion 26 on the above-described cleaning water path 70.

第1誘導流Fcや直進流Feは、前述の洗浄水経路70上にて便鉢部16の一端部16b(前端部)に向けて流れる。この経路を流れる過程で、直進流Feは、遠心力を受けて上向きの速度成分が付与されることで上向きに流れようとする。第1誘導流Fcは、下向きに流れる過程で、この上向きに流れようとする他の水流(直進流Fe)と合流することで、その上向きの流れを妨げようとする。第1誘導流Fcは、直進流Feと合流することで、直進流Feの上向きの速度成分の少なくとも一部を相殺することになる。これらの合流箇所の少なくとも一部は前述の洗浄水経路70上となる。第1誘導流Feは、他の水流(直進流Fe)と合流しつつ、その合流した他の水流とともに一方の面部22X(前面部22F)を伝う過程で遠心力により上向きに流れる。この後、第1誘導流Feは、便鉢部16の前後方向Xの一端部16bより旋回方向Dtにて、その合流した他の水流とともに下向きに流れて棚面50により受けられ、その棚面50上を旋回方向Dtに伝わる。   The first induction flow Fc and the straight flow Fe flow toward the one end 16b (front end) of the toilet bowl 16 on the washing water path 70 described above. In the course of flowing through this path, the straight flow Fe tends to flow upward due to the upward velocity component given centrifugal force. In the process of flowing downward, the first induced flow Fc merges with the other water flow (straight flow Fe) that is going to flow upward, so as to prevent the upward flow. The first induced flow Fc cancels at least a part of the upward velocity component of the straight flow Fe by merging with the straight flow Fe. At least a part of these merging points is on the aforementioned washing water path 70. The first induced flow Fe flows upward due to centrifugal force while traveling along one surface portion 22X (front surface portion 22F) together with the other water flow while merging with the other water flow (straight flow Fe). After that, the first induced flow Fe flows downward from the one end 16b of the toilet bowl 16 in the front-rear direction X in the turning direction Dt together with the other combined water flow, is received by the shelf 50, and is received by the shelf 50. 50 on the turning direction Dt.

第1誘導流Fcや直進流Feを形成する洗浄水は、前述の旋回流Faの一部として便鉢部16内を旋回したうえで、便鉢部16の右側面部22Rを前方に向かうように流れる。前述の第2誘導流Fdは、このように便鉢部16の右側面部22Rを前方に向かう旋回流Faと合流する。このように、第2誘導流Fdと合流する旋回流Faは、内方誘導部74により径方向内側に誘導されることなく流れた洗浄水の一部が形成する。旋回流Faと合流した第2誘導流Fdは、便鉢部16の前面部22F及び後面部22Bのうち、便鉢部16の一方の面部22X(前面部22F)にて、汚物受け面24の棚面50より下方で凹曲面部56の一部56aを経由しつつ、便鉢部16の溜水部28に向けて流れ落ちる水流Fgを形成する(図9も参照)。   The washing water forming the first induced flow Fc or the straight flow Fe is swirled in the toilet bowl 16 as a part of the swirl flow Fa, and then directed to the right side surface 22R of the toilet bowl 16 forward. Flows. The above-described second induced flow Fd merges with the swirling flow Fa flowing forward on the right side surface portion 22R of the toilet bowl portion 16 as described above. As described above, the swirling flow Fa that merges with the second induced flow Fd forms a part of the washing water that has flowed without being guided radially inward by the inner guiding portion 74. The second induced flow Fd that has merged with the swirling flow Fa is formed on the one surface portion 22X (front surface portion 22F) of the toilet bowl portion 16 of the front surface portion 22F and the rear surface portion 22B of the toilet bowl portion 16 by the surface of the waste receiving surface 24. A water flow Fg that flows down toward the pool portion 28 of the toilet bowl portion 16 while passing through a portion 56a of the concave curved surface portion 56 below the shelf surface 50 is formed (see also FIG. 9).

本実施形態の大便器10は、以上の洗浄水の流れが形成されるように構成される。このように構成するうえで、大便器10の便鉢部16の形状、吐水部42から吐き出される洗浄水の流量、洗浄水を吐き出す方向等が定められる。洗浄水の流量は、たとえば、吐水部42の吐水口44や通水路46の断面形状に応じて定められる。ここでの「便鉢部16の形状」には、本実施形態では、前述の導水路48の増加区間62(上方誘導部72及び内方誘導部74)が含まれる。   The toilet 10 of the present embodiment is configured so that the above-described flow of the wash water is formed. In such a configuration, the shape of the toilet bowl 16 of the toilet bowl 10, the flow rate of the wash water spouted from the water spouting section 42, the direction in which the wash water is spouted, and the like are determined. The flow rate of the washing water is determined, for example, according to the cross-sectional shape of the water outlet 44 and the water passage 46 of the water discharging unit 42. In the present embodiment, the “shape of the toilet bowl 16” includes the above-described increased section 62 (the upper guide 72 and the inner guide 74) of the water conduit 48 in the present embodiment.

以上の大便器10の効果を説明する。大便器10は、洗浄水を上方に誘導する上方誘導部72を備える。よって、前述の洗浄水経路70上において、上方誘導部72により上方に誘導してから自重により下方に向かう第1誘導流Fcを形成できる。このため、このような第1誘導流Fcが形成されない場合と比べ、便鉢部16の一方の面部22X(前面部22F)を伝う水流の上向きの速度成分を低減できる。これに伴い、その一方の面部22X(前面部22F)からの洗浄水の飛び出しを抑制できる。   The effects of the above toilet bowl 10 will be described. The toilet 10 includes an upper guide portion 72 that guides the wash water upward. Therefore, on the above-mentioned washing water path 70, it is possible to form the first induced flow Fc that is guided upward by the upper guide portion 72 and then directed downward by its own weight. For this reason, the upward velocity component of the water flow that travels through the one surface portion 22X (the front surface portion 22F) of the toilet bowl portion 16 can be reduced as compared with the case where the first induced flow Fc is not formed. Along with this, it is possible to suppress the flushing of the cleaning water from the one surface portion 22X (the front surface portion 22F).

第1誘導流Fcは、下向きに流れる過程で他の水流(直進流Fe)と合流しつつ、その他の水流とともに一方の面部22X(前面部F)を伝う過程で遠心力により上向きに流れる。よって、第1誘導流Fcが他の水流と合流しつつ上向きに流れない場合より、一方の面部22Xでの洗浄範囲を上下方向に広範囲化できる。   The first induced flow Fc merges with another water flow (straight flow Fe) in the process of flowing downward, and flows upward due to centrifugal force in the process of traveling along one surface portion 22X (front surface portion F) together with the other water flow. Therefore, the washing range of the one surface portion 22X can be widened in the vertical direction as compared with the case where the first induced flow Fc does not flow upward while merging with another water flow.

内方誘導部74により誘導された洗浄水は、平面視にてリム部26の内周面より径方向内側において、便鉢部16内に形成される旋回流Faと合流する。よって、内方誘導部74により誘導された洗浄水と旋回流Faが合流して水勢を増幅することで、便鉢部16の洗浄能力を増大できる。   The washing water guided by the inner guiding portion 74 merges with the swirling flow Fa formed in the toilet bowl portion 16 on the radial inner side of the inner peripheral surface of the rim portion 26 in plan view. Therefore, the washing water guided by the inner guiding portion 74 and the swirling flow Fa join to amplify the water force, so that the cleaning ability of the toilet bowl portion 16 can be increased.

内方誘導部74は、洗浄水の一部を径方向内側に誘導するため、その洗浄水の全てを誘導する場合と比べ、旋回流Faと合流する洗浄水(第2誘導流Fd)の流量を低減でき、その旋回流Faとの合流により生じる飛沫を抑制できる。よって、オーバーハング面が形成されない箇所にて、内方誘導部74により誘導された洗浄水と旋回流Faが合流したとしても、その飛沫の便鉢部16外への飛び出しを抑制できる。   Since the inner guiding portion 74 guides a part of the washing water radially inward, the flow rate of the washing water (second induced flow Fd) which merges with the swirling flow Fa is compared with the case where all the washing water is induced. Can be reduced, and the splash generated by the merging with the swirling flow Fa can be suppressed. Therefore, even if the washing water guided by the inner guiding portion 74 and the swirl flow Fa merge at a portion where the overhang surface is not formed, the splash of the splash to the outside of the toilet bowl portion 16 can be suppressed.

内方誘導部74により形成される第2誘導流Fdと合流する旋回流Faは、吐水部42が吐き出した洗浄水の一部が形成する。よって、この旋回流Faを形成するために他の吐水部42を設けずともよくなる。これに伴い、大便器10に要する吐水部42の数を抑えられ、その分、良好な意匠性を得られる。   The swirling flow Fa which merges with the second induction flow Fd formed by the inner guiding portion 74 is formed by a part of the washing water discharged from the water discharging portion 42. Therefore, it is not necessary to provide another water discharging section 42 in order to form the swirling flow Fa. Along with this, the number of water discharge portions 42 required for the toilet bowl 10 can be reduced, and accordingly, good design can be obtained.

内方誘導部74は、吐水部42の吐水口44より下流側にて吐水口44の近傍に設けられる。よって、吐水口44より下流側にて吐水口44から遠い箇所に内方誘導部74を設ける場合と比べ、第2誘導流Fdと旋回流Faの合流箇所を吐水口44に近づけられ、その分、第2誘導流Fdと合流するまでの間の旋回流Faの便鉢部16内での旋回距離を短くできる。かりに、便鉢部16内に供給される洗浄水の流量が少ない場合、第2誘導流Fdと旋回流Faの合流箇所が吐水口44から旋回流Faの旋回方向Dtに遠ざかるほど、旋回流Faの水勢が弱くなり、洗浄水により十分に洗浄できない領域が生じ易くなる。この点、本実施形態によれば、洗浄水の流量が少ない場合でも、便鉢部16内の広い範囲を洗浄できる。   The inward guiding section 74 is provided near the water outlet 44 on the downstream side of the water outlet 44 of the water outlet 42. Therefore, as compared with the case where the inward guiding portion 74 is provided at a location downstream of the water outlet 44 and farther from the water outlet 44, the confluence of the second induced flow Fd and the swirl flow Fa is brought closer to the water outlet 44, and The swirling distance of the swirling flow Fa in the toilet bowl 16 until the swirling flow Fa merges with the second induced flow Fd can be shortened. On the other hand, when the flow rate of the washing water supplied into the toilet bowl 16 is small, the swirling flow Fa is increased as the junction of the second induced flow Fd and the swirling flow Fa moves away from the water discharge port 44 in the swirling direction Dt of the swirling flow Fa. Is weakened, and a region that cannot be sufficiently cleaned by the cleaning water is likely to be generated. In this regard, according to the present embodiment, even when the flow rate of the washing water is small, a wide range in the toilet bowl 16 can be washed.

(A)吐水部42は、便鉢部16の側面部22Rに形成される開口部32を通して便鉢部16内に洗浄水を吐き出す。よって、便鉢部16の後面部22Bに開口部32を形成する場合と比べ、大便器10を正面側から見たときに、その開口部32を視認し難くなり、良好な意匠性を得られる。また、便鉢部16の後面部22Bに開口部32を形成する場合と比べ、大便器10の正面側から開口部32に手が届きやすくなり、良好な清掃性を得られる。 (A) The water spouting section 42 spouts flush water into the toilet bowl 16 through the opening 32 formed in the side surface 22R of the toilet bowl 16. Therefore, compared to the case where the opening 32 is formed in the rear surface portion 22B of the toilet bowl portion 16, when the toilet bowl 10 is viewed from the front side, it is difficult to visually recognize the opening portion 32, and a good design property can be obtained. . Further, compared with the case where the opening 32 is formed in the rear surface portion 22B of the toilet bowl portion 16, the opening portion 32 can be easily accessed from the front side of the toilet bowl 10, and good cleaning properties can be obtained.

洗浄水の飛び出しを抑制するため、便鉢部16の前面部22Fや後面部22Bに開口部32を形成する手段も考えられる。これにより、吐水部42から一方の面部22Aまでの旋回流Faの旋回距離を長くでき、その旋回流Faの水勢を弱めることで、その洗浄水の飛び出しを抑制できる。本実施形態によれば、このような手段を採ることなく、洗浄水の飛び出しを抑制できる。   Means for forming the opening 32 in the front surface portion 22F and the rear surface portion 22B of the toilet bowl 16 in order to suppress the flushing of the washing water may be considered. Thus, the swirling distance of the swirling flow Fa from the water discharging section 42 to the one surface portion 22A can be increased, and the water force of the swirling flow Fa is weakened, so that the washing water can be prevented from jumping out. According to the present embodiment, jumping out of the cleaning water can be suppressed without employing such means.

リム部26の内周面には、一方の面部22X(前面部22F)において、オーバーハング面のない連続面40が設けられる。よって、一方の面部22Xにオーバーハング面がなくとも、その連続面40を伝う洗浄水の飛び出しを抑制できる。   On the inner peripheral surface of the rim portion 26, a continuous surface 40 having no overhang surface is provided on one surface portion 22X (front surface portion 22F). Therefore, even if one surface portion 22X does not have an overhang surface, it is possible to suppress the washing water from flowing along the continuous surface 40.

リム部26の内周面には、開口部32以外の箇所にて、便鉢部16の全周に亘る範囲で連続面40が設けられる。よって、便鉢部16の周方向の広い範囲にて、拭き掃除で手の届き難いオーバーハング面が設けられないため、リム部26の内周面を拭き易くなる。   A continuous surface 40 is provided on the inner peripheral surface of the rim portion 26 at a location other than the opening portion 32 over the entire circumference of the toilet bowl portion 16. Therefore, an overhang surface that is hard to reach by wiping and cleaning is not provided in a wide range in the circumferential direction of the toilet bowl portion 16, so that the inner peripheral surface of the rim portion 26 is easily wiped.

上方誘導部72は、導水路48の曲面部58の増加区間62が構成する。よって、導水路48の底面(棚面50)に広範囲で凹凸を形成することなく上方誘導部72を構成でき、良好な意匠性を得られる。   The upper guide portion 72 is formed by an increased section 62 of the curved surface portion 58 of the water conduit 48. Therefore, the upper guide portion 72 can be configured without forming irregularities in a wide area on the bottom surface (shelf surface 50) of the water conduit 48, and a good design property can be obtained.

内方誘導部74は、導水路48の曲面部58の増加区間62が構成する。よって、導水路48の底面(棚面50)に広範囲で凹凸を形成することなく内方誘導部74を構成でき、良好な意匠性を得られる。   The inner guiding portion 74 is formed by an increased section 62 of the curved surface portion 58 of the water conduit 48. Therefore, the inward guiding portion 74 can be configured without forming irregularities in a wide area on the bottom surface (shelf surface 50) of the water conduit 48, and a good design property can be obtained.

曲面部58は、増加区間62より旋回流Faの旋回方向Dtに設けられる減少区間66を有する。よって、増加区間62より旋回方向Dtに設けられ、増加区間62の最大曲率半径より曲率半径の小さい他の区間(第3定区間68)と増加区間62とを減少区間66を介して滑らかに繋げられる。これに伴い、導水路48の曲面部58に増加区間62がある場合に、増加区間62と他の区間の間で目立つような段差面が形成されず、良好な意匠性を得られる。   The curved surface portion 58 has a decreasing section 66 provided in the turning direction Dt of the swirling flow Fa from the increasing section 62. Therefore, another section (third constant section 68) that is provided in the turning direction Dt from the increasing section 62 and has a smaller radius of curvature than the maximum radius of curvature of the increasing section 62 and the increasing section 62 are smoothly connected via the decreasing section 66. Can be Accordingly, when the curved section 58 of the headrace channel 48 has the increased section 62, no noticeable step surface is formed between the increased section 62 and the other sections, and good design properties can be obtained.

曲面部58は、増加区間62と減少区間66を連ねる第2定区間64を有する。よって、増加区間62と減少区間66により目立つような凸部が形成されず、良好な意匠性を得られる。   The curved surface section 58 has a second constant section 64 connecting the increasing section 62 and the decreasing section 66. Therefore, a prominent convex portion is not formed by the increasing section 62 and the decreasing section 66, and a good design property can be obtained.

次に、他の特徴を説明する。図4を参照する。リム部26の内周面には、前側領域30Fと中間領域30Sの境界となる第1曲率変化点30aと、後側領域30Bと中間領域30Sの境界となる第2曲率変化点30bとが設けられる。   Next, other features will be described. Please refer to FIG. A first curvature change point 30a serving as a boundary between the front region 30F and the middle region 30S, and a second curvature change point 30b serving as a boundary between the rear region 30B and the middle region 30S are provided on the inner peripheral surface of the rim portion 26. Can be

図10を参照する。第1誘導流Fcの最高点Phは、リム部26の前側領域30Fと後側領域Bのうち、便鉢部16の一方の面部22X(前面部22F)に設けられる領域(前側領域30F)と、中間領域30Sの境界にある曲率変化点30aの近傍に設けられると好ましい。詳しくは、第1誘導流Fcの最高点Phは、平面視において、曲率変化点30aから前後方向Xで上流側(本例では前後方向Xの後側)に30mm、前後方向Xで下流側(本例では前後方向Xの前側)に15mmの範囲内にあるとより好ましい。これは、本発明者の実験的な知見に基づき設定している。これにより、曲率半径の小さい領域30Fを伝うことで大きい遠心力を受け始める前に第1誘導流Fcを下向きに流し易くなる。これに伴い、強い下向きの勢いを持って直進流Feと合流させ易くなり、その直進流Feや第1誘導流Fcを形成する洗浄水が便鉢部16の一方の面部22X(前面部22F)を流れるとき、洗浄水の飛び出しの抑制を効果的に図れる。   Please refer to FIG. The highest point Ph of the first induced flow Fc is defined by a region (front region 30F) provided on one surface portion 22X (front region 22F) of the toilet bowl portion 16 of the front region 30F and the rear region B of the rim portion 26. , Is preferably provided near the curvature changing point 30a at the boundary of the intermediate region 30S. Specifically, the highest point Ph of the first induced flow Fc is 30 mm upstream in the front-rear direction X (rear side in the front-rear direction X in this example) from the curvature changing point 30a and downstream in the front-rear direction X from the curvature change point 30a in plan view ( In the present example, it is more preferable that the distance be within a range of 15 mm on the front side in the front-rear direction X). This is set based on the inventor's experimental findings. Thus, the first induced flow Fc can easily flow downward before starting to receive a large centrifugal force by traveling through the region 30F having a small radius of curvature. Along with this, it becomes easy to merge with the straight flow Fe with a strong downward momentum, and the washing water forming the straight flow Fe and the first induced flow Fc is flush with the one surface portion 22X of the toilet bowl portion 16 (front surface portion 22F). When flowing through, water can be effectively prevented from jumping out.

図6〜図8に示すように、便鉢部16には、開口部32の奥側かつ吐水口44の外側にオーバーハング面76が設けられる。オーバーハング面76は、開口部32の上縁部を形成する。オーバーハング面76は、リム部26の内周面にて、その上側に向かう途中で径方向内側に延びるように設けられる。オーバーハング面76は、前述の洗浄水経路70上において、吐水部42から旋回方向Dtに向かう一部の範囲に設けられる。本実施形態の便鉢部16には開口部32の奥側にのみオーバーハング面76が設けられ、その外側ではオーバーハング面76が設けられない。   As shown in FIGS. 6 to 8, the toilet bowl 16 is provided with an overhang surface 76 on the back side of the opening 32 and outside the water outlet 44. The overhang surface 76 forms the upper edge of the opening 32. The overhang surface 76 is provided on the inner peripheral surface of the rim portion 26 so as to extend radially inward on the way to the upper side. The overhang surface 76 is provided in a part of the above-described cleaning water path 70 in a part of the turning direction Dt from the water discharging part 42. In the toilet bowl portion 16 of the present embodiment, the overhang surface 76 is provided only on the inner side of the opening 32, and the overhang surface 76 is not provided outside.

オーバーハング面76は、吐水部42から旋回方向Dtに向かうにつれて連続的に上向きに延びるように水平面に対して傾斜している。オーバーハング面76は、吐水部42から旋回方向Dtに向かうにつれて径寸法が小さくなるように形成される。オーバーハング面76は、上方誘導部72により形成される前述の第1誘導流Fcに上方から接触する位置に設けられる。   The overhang surface 76 is inclined with respect to the horizontal plane so as to continuously extend upward from the water discharging section 42 toward the turning direction Dt. The overhang surface 76 is formed such that its diameter decreases as it goes from the water discharging part 42 to the turning direction Dt. The overhang surface 76 is provided at a position where the overhang surface 76 comes into contact with the first guide flow Fc formed by the upper guide portion 72 from above.

これにより、洗浄水供給装置14からの洗浄水供給量が急激に増大してしまい、上方誘導部72により洗浄水が大きく上昇しようとした場合でも、オーバーハング面76により洗浄水の上昇を規制できる。これに伴い、洗浄水が便鉢部16の外部に飛び出す事態を避けられる。また、上方誘導部72により上方に誘導された洗浄水によりオーバーハング面76を洗浄できる利点もある。   As a result, even if the supply amount of the cleaning water from the cleaning water supply device 14 suddenly increases, and the cleaning water is going to rise significantly by the upper guide portion 72, the rising of the cleaning water can be restricted by the overhang surface 76. . Accordingly, it is possible to avoid a situation in which the washing water jumps out of the toilet bowl portion 16. In addition, there is an advantage that the overhang surface 76 can be washed with the washing water guided upward by the upper guiding portion 72.

本実施形態のリム部26の内周面には、開口部32を形成するとともに開口部32より上方に設けられる上方面部78が設けられる。上方面部78は、オーバーハング面が形成されることなく、便鉢部16の上端内縁部16aから開口部32の上縁部まで連続している。上方面部78は、上方面部78と周方向両側に隣接するリム部26の内周面の一部分26aと滑らかに連なっている。ここでの滑らかに連なるとは、言及している二つの対象の間で凹凸が形成されることなく連なることをいう。   On the inner peripheral surface of the rim 26 of the present embodiment, an opening 32 is formed, and an upper surface 78 provided above the opening 32 is provided. The upper surface portion 78 is continuous from the upper end inner edge portion 16a of the toilet bowl portion 16 to the upper edge portion of the opening portion 32 without forming an overhang surface. The upper surface portion 78 is smoothly connected to a portion 26a of the inner peripheral surface of the rim portion 26 adjacent to the upper surface portion 78 on both sides in the circumferential direction. Here, the term “smoothly connected” means that the two objects referred to are connected without forming irregularities.

図5を参照する。吐水部42の底面42aには、吐水口44より奥側から吐水口44にかけての範囲において、吐水口44に向かうにつれて下り傾斜となる勾配が設けられる。これにより、吐水部42の内部に残水が貯まり難くなり、良好な衛生性を得られる。   Please refer to FIG. On the bottom surface 42 a of the water discharge section 42, a gradient is formed, which falls downward toward the water discharge port 44 in a range from the back side to the water discharge port 44 with respect to the water discharge port 44. This makes it difficult for residual water to accumulate inside the water discharge part 42, and good hygiene can be obtained.

(第2の工夫点)
図12は、図1のE−E断面図であり、図13は、図1のF−F断面図である。図2〜図4、図12、図13に示すように、リム部26の内周面は、便鉢部16の側面部22R、22Lに設けられる第1面領域90と、便鉢部16の前面部22F及び後面部22Bのうちの少なくとも一方に設けられる第2面領域92、94とを有する。第2面領域92、4の鉛直面Pvに対する傾斜角度θbは、第1面領域90より鉛直面Pvに対する傾斜角度θaより緩やかである。ここでの鉛直面Pvに対する傾斜角度とは、便鉢部16の中心Cpを通る鉛直断面での鉛直面Pvに対する鋭角での傾斜角度をいう。以下、説明の便宜から、第1面領域90を急斜面領域90といい、第2面領域92、94を緩斜面領域92、94という。
(Second device)
FIG. 12 is a sectional view taken along the line EE of FIG. 1, and FIG. 13 is a sectional view taken along the line FF of FIG. As shown in FIG. 2 to FIG. 4, FIG. 12, and FIG. 13, the inner peripheral surface of the rim portion 26 has a first surface region 90 provided on the side surface portions 22 </ b> R and 22 </ b> L of the toilet bowl portion 16. It has second surface regions 92 and 94 provided on at least one of the front surface portion 22F and the rear surface portion 22B. The inclination angle θb of the second surface regions 92 and 4 with respect to the vertical plane Pv is gentler than the inclination angle θa of the first surface region 90 with respect to the vertical surface Pv. Here, the inclination angle with respect to the vertical plane Pv refers to an acute inclination angle with respect to the vertical plane Pv in a vertical section passing through the center Cp of the toilet bowl portion 16. Hereinafter, for convenience of explanation, the first surface region 90 is referred to as a steep slope region 90, and the second surface regions 92 and 94 are referred to as gentle slope regions 92 and 94.

緩斜面領域92、94には、便鉢部16の前面部22F及び後面部22Bのうちの一方の面部22Xとなる前面部22Fに設けられる前側緩斜面領域92(一方側緩斜面領域)と、それらのうちの他方の面部となる後面部22Bに設けられる後側緩斜面領域94(他方側緩斜面領域)とが含まれる。   In the gentle slope regions 92 and 94, a front gentle slope region 92 (one-side gentle slope region) provided on the front portion 22F which is one of the front surface portion 22F and the rear surface portion 22B of the toilet bowl portion 16; A rear gentle slope area 94 (the other gentle slope area) provided on the rear face part 22B which is the other face part of them is included.

急斜面領域90は、便鉢部16の前後方向Xでの中間部を含む周方向範囲に設けられる。前側緩斜面領域92は、便鉢部16の一端部16b(前端部)を含む周方向範囲に設けられ、後側緩斜面領域94は、便鉢部16の前後方向Xの他端部16c(後端部)を含む周方向範囲に設けられる。前側緩斜面領域92は便鉢部16の前面部22Fの少なくとも大部分に設けられ、後側緩斜面領域94は便鉢部16の後面部22Bの少なくとも大部分に設けられる。本実施形態の前側緩斜面領域92は便鉢部16の前面部22Fの全域に設けられる。   The steep slope region 90 is provided in a circumferential range including an intermediate portion of the toilet bowl 16 in the front-rear direction X. The front gentle slope area 92 is provided in the circumferential range including one end 16b (front end) of the toilet bowl 16, and the rear gentle slope area 94 is the other end 16 c of the toilet bowl 16 in the front-rear direction X ( (Rear end). The gentle front slope region 92 is provided at least in most of the front surface portion 22F of the toilet bowl portion 16, and the rear gentle slope region 94 is provided in at least most of the rear surface portion 22B of the toilet bowl portion 16. The front gentle slope area 92 of the present embodiment is provided over the entire front surface 22 </ b> F of the toilet bowl 16.

急斜面領域90と前側緩斜面領域92の境界となる前側境界部96は、側面視において、便鉢部16の前面部22Fと側面部22R、22Lの何れかにて、それらの境界寄りの端部に設けられる。本実施形態の前側境界部96は、側面部22R、22Lの前面部22F寄りの端部に設けられる。   A front boundary portion 96 which is a boundary between the steep slope region 90 and the front gentle slope region 92 is, in a side view, one of the front surface portion 22F and the side surface portions 22R and 22L of the toilet bowl portion 16 and an end near the boundary. Is provided. The front boundary portion 96 of the present embodiment is provided at an end of the side surface portions 22R and 22L near the front surface portion 22F.

急斜面領域90と後側緩斜面領域94の境界となる後側境界部98は、側面視において、便鉢部16の側面部22R、22Lと後面部22Bの何れかにて、それらの境界寄りの端部に設けられる。本実施形態の後側境界部98は、後面部22Bの側面部22R、22L寄りの端部に設けられる。   A rear boundary portion 98 which is a boundary between the steep slope region 90 and the rear gentle slope region 94 is closer to the boundary in one of the side surfaces 22R and 22L and the rear surface 22B of the toilet bowl 16 in side view. It is provided at the end. The rear boundary portion 98 of the present embodiment is provided at an end near the side surfaces 22R and 22L of the rear surface 22B.

急斜面領域90には前述の開口部32が形成される。詳しくは、便鉢部16の右側面部22Rに設けられる急斜面領域90に開口部32が形成され、その左側面部22Lに設けられる急斜面領域90には開口部32が形成されない。また、緩斜面領域92、94には開口部32は形成されない。   The above-mentioned opening 32 is formed in the steep slope region 90. Specifically, the opening 32 is formed in the steep slope region 90 provided in the right side surface 22R of the toilet bowl portion 16, and the opening 32 is not formed in the steep slope region 90 provided in the left side surface 22L. The openings 32 are not formed in the gentle slope areas 92 and 94.

図12に示すように、前側緩斜面領域92は、便鉢部16の一端部16b(前端部)に設けられる第1最傾斜部92aと、第1最傾斜部92aと前側境界部96の間に設けられる第1角度変化部92bとを有する。第1最傾斜部92aは、前側緩斜面領域92のなかで傾斜角度が最も大きくなり、その周方向の全範囲で実質的に一定の傾斜角度となる。第1角度変化部92bは、前側境界部96から便鉢部16の一端部16b(前端部)に近づくにつれて、第1最傾斜部92aの傾斜角度に近づくように連続的に傾斜角度が変化する。   As shown in FIG. 12, the front gentle slope region 92 is formed between a first most inclined portion 92 a provided at one end 16 b (front end) of the toilet bowl 16, and the first most inclined portion 92 a and the front boundary portion 96. And a first angle changing portion 92b provided at the first position. The first inclination portion 92a has the largest inclination angle in the front gentle slope region 92, and has a substantially constant inclination angle over the entire circumferential range. As the first angle changing portion 92b approaches the one end portion 16b (front end portion) of the toilet bowl portion 16 from the front boundary portion 96, the inclination angle continuously changes so as to approach the inclination angle of the first most inclined portion 92a. .

図13に示すように、後側緩斜面領域94は、便鉢部16の他端部16c(後端部)に設けられる第2最傾斜部94aと、第2最傾斜部94aと、後側境界部98の間に設けられる第2角度変化部94bとを有する。第2最傾斜部94aは、後側緩斜面領域94のなかで傾斜角度が最も大きくなり、その周方向の全範囲で実質的に一定の傾斜角度となる。第2角度変化部94bは、後側境界部98から便鉢部16の他端部16c(後端部)に近づくにつれて、第2最傾斜部94aの傾斜角度に近づくように連続的に傾斜角度が変化する。   As shown in FIG. 13, the rear gentle slope area 94 includes a second most inclined portion 94a provided at the other end 16c (a rear end) of the toilet bowl portion 16, a second most inclined portion 94a, and a rear side. A second angle changing portion 94b provided between the boundary portions 98. The second most inclined portion 94a has the largest inclination angle in the rear gentle slope region 94, and has a substantially constant inclination angle over the entire circumferential range. The second angle changing portion 94b is continuously inclined such that it approaches the inclination angle of the second most inclined portion 94a as it approaches the other end 16c (rear end) of the toilet bowl portion 16 from the rear boundary portion 98. Changes.

急斜面領域90及び緩斜面領域92、94には前述の連続面40が設けられる。右側面部22Rに設けられる急斜面領域90には、開口部32以外の箇所にて、その全部の周方向範囲に連続面40が設けられる。左側面部22Lに設けられる急斜面領域90や、緩斜面領域92、94には、その全部の周方向範囲に連続面40が設けられる。   The continuous surface 40 described above is provided in the steep slope region 90 and the gentle slope regions 92 and 94. In the steep slope region 90 provided on the right side surface portion 22R, the continuous surface 40 is provided in the entire circumferential range at locations other than the opening 32. In the steep slope region 90 and the gentle slope regions 92 and 94 provided in the left side surface portion 22L, the continuous surface 40 is provided in the entire circumferential range.

本実施形態において、急斜面領域90は前述の中間領域30S、前側緩斜面領域92は前側領域30F、後側緩斜面領域94は後側領域30Rが構成する。急斜面領域90は、平面視において、第3範囲R3内の曲率半径の曲面状をなし、緩斜面領域92、94は、第3範囲R3の曲率半径より小さい曲率半径の曲面状をなすことになる。   In the present embodiment, the steep slope area 90 is constituted by the above-described intermediate area 30S, the front gentle slope area 92 is constituted by the front area 30F, and the rear gentle slope area 94 is constituted by the rear area 30R. The steep slope region 90 has a curved surface with a radius of curvature within the third range R3 in plan view, and the gentle slope regions 92 and 94 have a curved surface with a radius of curvature smaller than the radius of curvature of the third range R3. .

以上の工夫点による効果を説明する。図14は、洗浄水Wに作用する遠心力Faの説明図である。本図では、リム部26の内周面の法線方向に沿った第1分力Fa1と、その内周面の面内方向に沿った第2分力Fa2とに分けて遠心力Faを示す。   The effects of the above-described ideas will be described. FIG. 14 is an explanatory diagram of the centrifugal force Fa acting on the cleaning water W. In this drawing, the centrifugal force Fa is divided into a first component force Fa1 along the normal direction of the inner peripheral surface of the rim portion 26 and a second component force Fa2 along the in-plane direction of the inner peripheral surface. .

洗浄水にはリム部26の内周面に沿って流れるときに遠心力Faが作用する。この遠心力Faの第2分力Fa2の成分(=Fa×sinθ)は、リム部26の内周面の傾斜角度θが大きくなるほど増大する。これは、リム部26の内周面の傾斜角度θが大きくなるほど、洗浄水が遠心力Faを受けて広い上下範囲に届き易くなることを意味している。ここでの上下範囲とは、上下方向Zでの範囲をいう。   The centrifugal force Fa acts on the washing water when flowing along the inner peripheral surface of the rim portion 26. The component of the second component force Fa2 of the centrifugal force Fa (= Fa × sin θ) increases as the inclination angle θ of the inner peripheral surface of the rim portion 26 increases. This means that the larger the inclination angle θ of the inner peripheral surface of the rim portion 26 becomes, the more easily the cleaning water reaches a wider vertical range due to the centrifugal force Fa. Here, the vertical range means a range in the vertical direction Z.

本実施形態の緩斜面領域92、94の傾斜角度θbは、急斜面領域90の傾斜角度θaより緩やかである。よって、急斜面領域90と緩斜面領域92、94とで傾斜角度を同じにする場合と比べ、便鉢部16の前面部22F又は後面部22Bに設けられた緩斜面領域92、94で遠心力を受けた洗浄水が広い上下範囲に届き易くなる。これに伴い、緩斜面領域92、94の連続面40での洗浄範囲を上下方向に広範囲化できる。   In the present embodiment, the inclination angle θb of the gentle slope areas 92 and 94 is gentler than the inclination angle θa of the steep slope area 90. Therefore, the centrifugal force is reduced by the gentle slope regions 92 and 94 provided on the front surface 22F or the rear surface 22B of the toilet bowl 16 as compared with the case where the inclination angle is the same between the steep slope region 90 and the gentle slope regions 92 and 94. The received washing water can easily reach a wide vertical range. Along with this, the cleaning range on the continuous surface 40 of the gentle slope regions 92 and 94 can be widened in the vertical direction.

このように上下方向での洗浄範囲を広くするために、この他にも、平面視でのリム部26の内周面の曲率半径を小さくする手段が考えられる。本実施形態によれば、このような手段をとる場合と比べ、便鉢部16の輪郭を大きく変えずに済む利点がある。   In order to widen the cleaning range in the vertical direction as described above, other means may be considered to reduce the radius of curvature of the inner peripheral surface of the rim portion 26 in plan view. According to the present embodiment, there is an advantage that the contour of the toilet bowl portion 16 does not need to be largely changed as compared with the case where such means are taken.

特に、小便により汚れ易い便鉢部16の前面部22Fに設けられた連続面40での洗浄範囲を広範囲化できる。また、拭き掃除し難い便鉢部16の後面部22Bに設けられた連続面40での洗浄範囲を広範囲化できる。   In particular, the range of cleaning on the continuous surface 40 provided on the front surface 22F of the toilet bowl 16 that is easily soiled by urine can be widened. In addition, the range of cleaning on the continuous surface 40 provided on the rear surface portion 22B of the toilet bowl 16 that is difficult to wipe can be widened.

吐水部42は、急斜面領域90に形成される開口部32を通して便鉢部16内に洗浄水を吐き出す。よって、緩斜面領域92、94に開口部32を形成するよりも、平面視において開口部32が目立ち難くなり、良好な意匠性を得られる。また、この他にも、前述した(A)の効果も得られる。   The water discharging section 42 discharges the washing water into the toilet bowl 16 through the opening 32 formed in the steep slope area 90. Therefore, the opening 32 is less noticeable in a plan view than in the case where the opening 32 is formed in the gentle slope regions 92 and 94, and a good design property can be obtained. In addition, the effect (A) described above can also be obtained.

他の特徴を説明する。図4を参照する。棚面50は、便鉢部16の前面部22F(一方の面部22X)や後面部22B(他方の面部)に設けられる便鉢部16の前端又は後端より旋回方向Dtにて前側緩斜面領域92に接続される。詳しくは、棚面50は、便鉢部16の前端より旋回方向Dtにて前側緩斜面領域92に接続され、便鉢部16の後端より旋回方向Dtにて後側緩斜面領域94に接続される。   Other features will be described. Please refer to FIG. The shelf surface 50 is a gentle front slope region in the turning direction Dt from the front end or the rear end of the toilet bowl portion 16 provided on the front portion 22F (one surface portion 22X) or the rear surface portion 22B (the other surface portion) of the toilet bowl portion 16. 92. More specifically, the shelf surface 50 is connected to the front gentle slope region 92 in the turning direction Dt from the front end of the toilet bowl portion 16 and connected to the rear gentle slope region 94 in the turning direction Dt from the rear end of the toilet bowl portion 16. Is done.

これにより、前側緩斜面領域92や後側緩斜面領域94を経由する過程で遠心力を受けて上昇してから下降する洗浄水を棚面50で受け易くなる。これに伴い、前側緩斜面領域92や後側緩斜面領域94を経由した洗浄水の多くを導水路48により遠くまで届かせられる。   This makes it easier for the shelf surface 50 to receive the washing water that rises and then descends due to the centrifugal force in the process of passing through the front gentle slope area 92 and the rear gentle slope area 94. Along with this, much of the washing water that has passed through the front gentle slope area 92 and the rear gentle slope area 94 can be made to reach farther through the water conduit 48.

なお、棚面50は、便鉢部16の前面部22Fにおいて、その便鉢部16の前端より旋回流Faの旋回方向Dtとは反対側にて、前側緩斜面領域92に接続される。また、棚面50は、便鉢部16の後面部22Bにおいて、その全域において後側緩斜面領域94に接続される。   The shelf surface 50 is connected to the front gentle slope region 92 on the front surface 22F of the toilet bowl portion 16 on the side opposite to the swirling direction Fa of the swirling flow Fa from the front end of the toilet bowl portion 16. Further, the shelf surface 50 is connected to the rear gentle slope region 94 in the entire rear surface portion 22B of the toilet bowl portion 16.

汚物受け面24の凹曲面部56の一部は、便鉢部16の前面部22Fに設けられる。凹曲面部56は、少なくとも便鉢部16の左右中央部16dにおいて、汚物受け面24の下端縁部24bから汚物受け面24の外周端部24aまで連続する。凹曲面部56は、便鉢部16の左右中央部16dにおいて、棚面50を介さずに前側緩斜面領域92に連なることになる。棚面50は、便鉢部16の前面部22Fにて便鉢部16の左右中央部16dには設けられないとも捉えられる。   Part of the concave curved surface portion 56 of the waste receiving surface 24 is provided on the front surface portion 22F of the toilet bowl portion 16. The concave curved surface portion 56 is continuous from the lower end edge 24b of the waste receiving surface 24 to the outer peripheral end 24a of the waste receiving surface 24 at least in the left and right central portions 16d of the toilet bowl portion 16. The concave curved surface portion 56 is continuous with the front gentle slope region 92 without the intervention of the shelf surface 50 in the left and right central portions 16 d of the toilet bowl portion 16. It can be understood that the shelf surface 50 is not provided at the left and right central portions 16d of the toilet bowl portion 16 at the front surface portion 22F of the toilet bowl portion 16.

かりに、便鉢部16の前面部22Fにて左右中央部16dに凸曲面状の棚面50の内周端部50a(凸曲面部52)が設けられると、その内周端部50aに小便が当たったときに飛沫が生じ易くなる。この点、本実施形態によれば、その左右中央部16dに凸曲面状の棚面50の内周端部が設けられない構造となるため、小便の飛沫を抑制できる。   On the other hand, when the inner peripheral end 50a (convex curved surface 52) of the convex curved shelf surface 50 is provided at the left and right central portion 16d on the front surface portion 22F of the toilet bowl portion 16, urination occurs on the inner peripheral end 50a. Drops tend to occur when hit. In this regard, according to the present embodiment, the inner peripheral end of the convex curved shelf surface 50 is not provided in the left and right central portions 16d, so that it is possible to suppress the splash of urine.

図1を参照する。便鉢部16は、前述の開口部32や開口部32の奥側部分を除く範囲において、実質的に左右対称の位置に設けられる。汚物受け面24は、棚面50の内周端部50aから汚物受け面24の下端縁部24bまでの範囲において、実質的に左右対称の位置に設けられるとも捉えられる。また、棚面50の内周端部50aは実質的に左右対称の位置に設けられるとも捉えられる。また、リム部26の内周面は、前述の開口部32を除く範囲において、実質的に左右対称の位置に設けられるとも捉えられる。   Please refer to FIG. The toilet bowl portion 16 is provided at a substantially symmetrical position in a range excluding the above-described opening portion 32 and the deep portion of the opening portion 32. It can be understood that the waste receiving surface 24 is provided at substantially symmetrical positions in a range from the inner peripheral end 50a of the shelf surface 50 to the lower end edge 24b of the waste receiving surface 24. Further, it can be understood that the inner peripheral end 50a of the shelf surface 50 is provided at a substantially symmetrical position. In addition, it can be considered that the inner peripheral surface of the rim portion 26 is provided at a substantially symmetrical position in a range excluding the opening 32 described above.

大便器10でエッジとなる箇所は目視により位置を把握し易い。本実施形態では、このようなエッジとなる棚面50の内周端部50aが左右対称の位置に設けられる。よって、製造誤差等に起因して棚面50等の形状が左右で非対称となった場合、そのことを目視により判別し易くなり、検品作業の容易化を図れる。   The location of the toilet 10 that becomes an edge is easily visually recognized. In the present embodiment, the inner peripheral end 50a of the shelf surface 50 serving as such an edge is provided at a symmetrical position. Therefore, when the shape of the shelf surface 50 or the like becomes asymmetrical on the left and right due to a manufacturing error or the like, it becomes easy to visually determine that, and the inspection work can be facilitated.

(第2の実施の形態)
図15は、第2実施形態の大便器10の一部を示す側面断面図である。第1実施形態の大便器10は、前側緩斜面領域92及び後側緩斜面領域94の傾斜角度θbが実質的に同じである。これに対して、本実施形態の大便器10は、前側緩斜面領域92及び後側緩斜面領域94の傾斜角度θbが異なる。詳しくは、後側緩斜面領域94は、前側緩斜面領域92より鉛直面に対する傾斜角度θbが緩やかとなる。本実施形態では、後側緩斜面領域94の第2最傾斜部94aの全域での傾斜角度が、前側緩斜面領域92の第1最傾斜部92aの傾斜角度より緩やかとなる。この理由を説明する。
(Second embodiment)
Drawing 15 is a side sectional view showing a part of toilet bowl 10 of a 2nd embodiment. In the toilet 10 of the first embodiment, the front gentle slope area 92 and the rear gentle slope area 94 have substantially the same inclination angle θb. On the other hand, in the toilet bowl 10 of the present embodiment, the front gentle slope area 92 and the rear gentle slope area 94 have different inclination angles θb. Specifically, the inclination angle θb of the gentle rear slope region 94 with respect to the vertical plane is smaller than that of the front gentle slope region 92. In the present embodiment, the inclination angle of the second gentlest slope region 94a in the entire rear gentle slope region 94 is gentler than the inclination angle of the first gentlest portion 92a in the front gentle slope region 92. The reason will be described.

前述の通り、吐水部42が吐き出す洗浄水により形成される旋回流は、前側緩斜面領域92(一方側第2面領域)を経由してから後側緩斜面領域94(他方側第2面領域)を経由する。このため、後側緩斜面領域94を経由するとき、前側緩斜面領域92を経由するときより旋回流の水勢が弱くなり、遠心力を受けて広い上下範囲に届き難くなる。   As described above, the swirling flow formed by the cleaning water discharged from the water discharging section 42 passes through the front gentle slope area 92 (one side second face area) and then to the rear gentle slope area 94 (the other second face area). Via). For this reason, when passing through the gentle rear slope area 94, the swirling flow has a weaker water force than when passing through the front gentle slope area 92, and it is difficult to reach a wide vertical range due to centrifugal force.

(B)この点、本実施形態によれば、弱い水勢の旋回流が後側緩斜面領域94を経由するときでも、その後側緩斜面領域94の広い上下範囲に洗浄水を届かせ易くできる。特に、このような目的を果たすため、吐水部42から吐き出される洗浄水を大流量化せずともよくなり、その大流量化に伴い前側緩斜面領域92から洗浄水が飛び出す事態を避けられる。 (B) In this respect, according to the present embodiment, even when the swirling flow of the weak water force passes through the rear gentle slope area 94, the washing water can easily reach the wide vertical area of the rear gentle slope area 94. In particular, in order to achieve such an object, it is not necessary to increase the flow rate of the cleaning water discharged from the water discharging section 42, and it is possible to avoid a situation in which the cleaning water jumps out of the front gentle slope area 92 due to the increase in the flow rate.

以上、実施形態をもとに本発明を説明した。次に、各構成要素の変形例を説明する。   The present invention has been described based on the embodiments. Next, modified examples of each component will be described.

便器装置12は、洗い落とし式以外の他の洗浄方式を用いて洗浄してもよい。この洗浄方式とは、たとえば、サイホン式等である。   The toilet bowl device 12 may be cleaned using a cleaning method other than the flush type. This cleaning method is, for example, a siphon method.

便鉢部16の開口部32は、側面部22R、22Lの他に、前面部22Fや後面部22Bに形成されていてもよい。開口部32は、急斜面領域90の他に、緩斜面領域92、94に形成されていてもよい。開口部32は便鉢部16に複数形成されていてもよい。   The opening 32 of the toilet bowl 16 may be formed in the front surface 22F or the rear surface 22B in addition to the side surfaces 22R and 22L. The opening 32 may be formed in the gentle slope areas 92 and 94 in addition to the steep slope area 90. A plurality of openings 32 may be formed in the toilet bowl 16.

便鉢部16の棚面50等は、実質的に左右対称の位置に設けられていなくともよい。   The shelf surface 50 and the like of the toilet bowl section 16 do not have to be provided at substantially symmetrical positions.

リム部26の内周面には全周に亘る範囲でオーバーハング面が形成されていてもよい。リム部26の内周面では、便鉢部16の全周に亘る部位で傾斜角度を実質的に同じとしてもよい。   An overhang surface may be formed on the inner peripheral surface of the rim portion 26 over the entire circumference. On the inner peripheral surface of the rim portion 26, the inclination angle may be substantially the same at a portion over the entire circumference of the toilet bowl portion 16.

連続面40は、前述のオーバーハング面が形成されていなければよい。この条件を満たすのであれば、連続面40は、少なくとも一部において、便鉢部16の上端内縁部16aから下方に向かうにつれて、徐々に径方向外側に延びるように設けられていてもよい。   The continuous surface 40 only needs to have the above-mentioned overhang surface. If this condition is satisfied, the continuous surface 40 may be provided at least partially so as to gradually extend radially outward from the upper end inner edge portion 16a of the toilet bowl portion 16 downward.

吐水部42の吐水口44は、リム部26の開口部32の奥側に形成される例を説明したが、その開口部32が吐水口44を構成していてもよい。この場合、リム部26の内周面にはオーバーハング面76が設けられていなくともよい。吐水部42により形成される旋回流Faの旋回方向Dtは時計回り方向でもよい。   Although the example in which the water outlet 44 of the water discharge part 42 is formed on the back side of the opening 32 of the rim 26 has been described, the opening 32 may constitute the water discharge port 44. In this case, the inner peripheral surface of the rim portion 26 may not have the overhang surface 76. The swirling direction Dt of the swirling flow Fa formed by the water discharger 42 may be clockwise.

吐水部42により形成される旋回流Faが先に経由する便鉢部16の前後方向Xの一端部16bを便鉢部16の後端部とし、その旋回流Faが後で経由する便鉢部16の他端部16cを便鉢部16の前端部としてもよい。この場合、便鉢部16の一端部16bが設けられる一方の面部22Xは便鉢部16の後面部22Bとなり、便鉢部16の他端部16cが設けられる他方の面部は便鉢部16の前面部22Fとなる。   One end portion 16b in the front-rear direction X of the toilet bowl 16 through which the swirling flow Fa formed by the water discharging portion 42 passes first is defined as the rear end of the toilet bowl 16, and the swirling flow Fa passes through the toilet bowl later. The other end 16 c of the toilet bowl 16 may be the front end of the toilet bowl 16. In this case, one surface portion 22X on which the one end portion 16b of the toilet bowl portion 16 is provided becomes a rear surface portion 22B of the toilet bowl portion 16, and the other surface portion on which the other end portion 16c of the toilet bowl portion 16 is provided is the other surface portion of the toilet bowl portion 16. It becomes the front face 22F.

実施形態のように、旋回流Faが先に経由する便鉢部16の一端部が便鉢部16の前端部であり、その便鉢部16の一端部が設けられる一方の面部22Xが便鉢部16の前面部22Fである場合を考える。この場合、吐水部42は、たとえば、便鉢部16の前面部22F(一方の面部22X)に対して旋回方向Dtとは周方向の反対側に隣り合う側面部22Rや、その側面部22Rに隣り合う後面部22Bに設けられていればよい。   As in the embodiment, one end of the toilet bowl 16 through which the swirling flow Fa passes first is the front end of the toilet bowl 16, and one surface 22X on which the one end of the toilet bowl 16 is provided is the toilet bowl. Consider the case of the front portion 22F of the portion 16. In this case, for example, the water spouting portion 42 is provided on the side surface portion 22R adjacent to the front surface portion 22F (one surface portion 22X) of the toilet bowl portion 16 on the side opposite to the circumferential direction with respect to the turning direction Dt, or on the side surface portion 22R. What is necessary is just to be provided in the adjacent rear surface part 22B.

旋回流Faが先に経由する便鉢部16の一端部が便鉢部16の後端部であり、その便鉢部16の一端部が設けられる一方の面部22Xが便鉢部16の後面部22Bである場合を考える。この場合、吐水部42は、たとえば、便鉢部16の後面部22B(一方の面部22X)に対して旋回方向Dtとは周方向の反対側に隣り合う側面部22Lや、その側面部22Lに隣り合う前面部22Fに設けられていればよい。   One end of the toilet bowl 16 through which the swirling flow Fa passes first is the rear end of the toilet bowl 16, and one surface 22X on which one end of the toilet bowl 16 is provided is the rear surface of the toilet bowl 16. Consider the case of 22B. In this case, for example, the water spouting portion 42 is formed on the side surface portion 22L adjacent to the rear surface portion 22B (one surface portion 22X) of the toilet bowl portion 16 on the side opposite to the turning direction Dt in the circumferential direction or the side surface portion 22L. What is necessary is just to be provided in the adjacent front surface part 22F.

(第1の工夫点)
上方誘導部72は、導水路48の増加区間62が構成する例を説明したが、その具体例は特に限定されない。上方誘導部72は、たとえば、吐水部42の通水路46の底面や導水路48の棚面50に形成される凸部でもよい。この他にも、それらに形成されるとともに旋回方向Dtに向かって上り勾配となる傾斜面でもよい。
(First ingenuity)
The example in which the upward guiding section 72 is configured by the increasing section 62 of the headrace channel 48 has been described, but a specific example thereof is not particularly limited. The upper guide portion 72 may be, for example, a convex portion formed on the bottom surface of the water passage 46 of the water discharge portion 42 or the shelf surface 50 of the water passage 48. In addition, an inclined surface formed on them and having an upward slope in the turning direction Dt may be used.

上方誘導部72は、吐水部42が吐き出した洗浄水の一部を上方に誘導する例を説明したが、その全部を上方に誘導してもよい。   Although the example in which the upper guide unit 72 guides a part of the wash water discharged from the water discharge unit 42 upward has been described, the whole may be guided upward.

内方誘導部74は、導水路48の増加区間62が構成する例を説明したが、その具体例は特に限定されない。内方誘導部74は、たとえば、導水路48の棚面50に形成される凸部でもよい。   The example in which the inner guiding portion 74 is configured by the increasing section 62 of the water conduit 48 has been described, but a specific example thereof is not particularly limited. The inner guiding portion 74 may be, for example, a convex portion formed on the shelf surface 50 of the water conduit 48.

上方誘導部72や内方誘導部74は、吐水口44の近傍とは異なる箇所に設けられてもよい。   The upper guide portion 72 and the inner guide portion 74 may be provided at a location different from the vicinity of the water outlet 44.

上方誘導部72と内方誘導部74のそれぞれは導水路48の同じ部位(増加区間62)が構成する例を説明したが、互いに別々の部位が構成してもよいし、いずれか一方がなくともよい。   Each of the upper guide portion 72 and the inner guide portion 74 has been described as an example in which the same portion (increase section 62) of the water conduit 48 is configured. However, separate portions may be configured, or one of them is not provided. May be.

導水路48の増加区間62は、吐水部42の外側に形成される例を説明したが、吐水部42の内側に形成されてもよい。   Although the example in which the increased section 62 of the water conduit 48 is formed outside the water discharge section 42 has been described, it may be formed inside the water discharge section 42.

導水路48の増加区間62と他の区間68は減少区間66を介さずに段差面を介して繋がっていてもよい。   The increased section 62 of the headrace 48 and the other section 68 may be connected via a step surface without passing through the reduced section 66.

水洗大便器10は、前述の第1誘導流Fcを形成するように構成されるうえで上方誘導部72を備える例を説明したが、その上方誘導部72を備えていなくともよい。   Although the flush toilet 10 has been described as being configured to form the above-described first induced flow Fc and including the upper guide portion 72, the flush toilet 10 may not include the upper guide portion 72.

(第2の工夫点)
第1面領域90は、鉛直面に対して傾斜した急斜面領域が構成する例を説明したが、鉛直面に対して実質的に平行な鉛直面領域が構成していてもよい。
(Second device)
Although the first surface region 90 has been described as an example in which the steeply inclined surface region is inclined with respect to the vertical surface, a vertical surface region substantially parallel to the vertical surface may be included.

緩斜面領域92、94は、便鉢部16の前面部22F及び後面部22Bのうちの一方にのみ設けられていてもよい。   The gentle slope regions 92 and 94 may be provided only on one of the front surface portion 22F and the rear surface portion 22B of the toilet bowl portion 16.

旋回流Faが後側緩斜面領域94を経由してから前側緩斜面領域92を経由する場合を考える。この場合、前述の(B)の効果を得るうえでは、後側緩斜面領域94より前側緩斜面領域92の傾斜角度θbが緩やかであればよい。   It is assumed that the swirling flow Fa passes through the gentle rear slope area 94 and then passes through the gentle front slope area 92. In this case, in order to obtain the above-described effect (B), it is only necessary that the inclination angle θb of the front gentle slope area 92 is gentler than that of the rear gentle slope area 94.

第1面領域90は、便鉢部16の側面部22Rに設けられ、第2面領域92、94は、便鉢部16の前面部22F、後面部22Bに設けられる例を説明した。この他にも、平面視において、第1面領域90を第3範囲内の曲率半径の曲面状とし、第2面領域92、94を第3範囲の曲率半径より小さい曲率半径の曲面状とし、これらを便鉢部16の前面部22等と無関係の位置に設けてもよい。これは、たとえば、平面視において、リム部26の内周面が矩形状を呈しており、その矩形の四辺の辺部が曲面状の第1面領域90となり、その四辺の角部が曲面状の第2面領域92、94となる場合を想定している。   The example in which the first surface region 90 is provided on the side surface 22R of the toilet bowl 16 and the second surface regions 92 and 94 are provided on the front surface 22F and the rear surface 22B of the toilet bowl 16 has been described. In addition, in plan view, the first surface region 90 has a curved surface with a radius of curvature within the third range, and the second surface regions 92 and 94 have a curved surface with a radius of curvature smaller than the radius of curvature of the third range. These may be provided at positions irrelevant to the front part 22 of the toilet bowl part 16 and the like. This is because, for example, in plan view, the inner peripheral surface of the rim portion 26 has a rectangular shape, and four sides of the rectangle are curved first surface regions 90, and corners of the four sides are curved surfaces. Are assumed to be the second surface regions 92 and 94.

以上、本発明の実施形態や変形例について詳細に説明した。前述した実施形態や変形例は、いずれも本発明を実施するにあたっての具体例を示したものにすぎない。実施形態や変形例の内容は、本発明の技術的範囲を限定するものではなく、発明の思想を逸脱しない範囲において、構成要素の変更、追加、削除等の多くの設計変更が可能である。前述の実施形態では、このような設計変更が可能な内容に関して、「実施形態の」「実施形態では」等との表記を付して強調しているが、そのような表記のない内容でも設計変更が許容される。以上の構成要素の任意の組み合わせも、本発明の態様として有効である。図面の断面に付したハッチングは、ハッチングを付した対象の材質を限定するものではない。   The embodiment and the modification of the present invention have been described above in detail. Each of the above-described embodiments and modified examples is merely a specific example for implementing the present invention. The contents of the embodiments and the modified examples do not limit the technical scope of the present invention, and many design changes such as change, addition, and deletion of constituent elements are possible without departing from the spirit of the invention. In the above-described embodiment, the contents that can be changed in design are emphasized by notation such as “of the embodiment” and “in the embodiment”. Changes are allowed. Any combination of the above components is also effective as an aspect of the present invention. The hatching attached to the cross section of the drawing does not limit the material to which hatching is applied.

以上の実施形態、変形例により具体化される発明を一般化すると、以下の技術的思想が導かれる。以下、発明が解決しようとする課題に記載の態様を用いて説明する。   When the invention embodied by the above embodiments and modifications is generalized, the following technical ideas are derived. Hereinafter, the present invention will be described using embodiments described in the problem to be solved.

第2態様の水洗大便器は、第1態様において、前記吐水部は、前記第1面領域に形成される開口部を通して前記便鉢部内に洗浄水を吐き出してもよい。この態様によれば、第2面領域に開口部を形成するよりも、平面視において開口部が目立ち難くなり、良好な意匠性を得られる。   In the flush toilet according to the second aspect, in the first aspect, the water discharging section may discharge the flush water into the toilet bowl through an opening formed in the first surface region. According to this aspect, the opening is less noticeable in a plan view than when the opening is formed in the second surface region, and a good design property can be obtained.

第3態様の水洗大便器は、第2態様において、前記リム部の内周面には、前記開口部以外の箇所にて、前記便鉢部の全周に亘る範囲で前記連続面が設けられてもよい。この態様によれば、便鉢部の周方向の広い範囲にて、拭き掃除で手の届き難いオーバーハング面が設けられないため、リム部の内周面を拭き易くなる。   A flush toilet according to a third aspect is the flush toilet according to the second aspect, wherein the continuous surface is provided on an inner peripheral surface of the rim portion at a position other than the opening so as to cover the entire circumference of the toilet bowl portion. You may. According to this aspect, since the overhang surface that is hard to reach by wiping and cleaning is not provided in a wide range in the circumferential direction of the toilet bowl portion, the inner peripheral surface of the rim portion is easily wiped.

第4態様の水洗大便器は、第1から第3態様のいずれかにおいて、前記第2面領域には、前記一方の面部に設けられる一方側第2面領域と、前記便鉢部の前面部及び後面部のうちの他方の面部に設けられる他方側第2面領域と、が含まれてもよい。この態様によれば、小便により汚れ易い便鉢部の前面部での洗浄範囲を広範囲化できる。また、拭き掃除し難い便鉢部の後面部での洗浄範囲を広範囲化できる。   A flush toilet according to a fourth aspect is the flush toilet according to any one of the first to third aspects, wherein the second surface region includes a one-side second surface region provided on the one surface portion, and a front portion of the toilet bowl portion. And a second surface region on the other side provided on the other surface portion of the rear surface portion. According to this aspect, it is possible to widen the range of cleaning at the front part of the toilet bowl that is easily soiled by urine. In addition, the range of cleaning on the rear surface of the toilet bowl that is difficult to wipe can be widened.

第5態様の水洗大便器は、第1から第4態様のいずれかにおいて、前記旋回流は、前記一方側第2面領域を経由してから前記他方側第2面領域を経由し、前記他方側第2面領域は、前記一方側第2面領域より鉛直面に対する傾斜角度が緩やかであってもよい。他方側第2面領域を旋回流が経由するとき、一方側第2面領域を経由するときより旋回流の水勢が弱くなる。この態様によれば、弱い水勢の旋回流が他方側第2面領域を経由するときでも、その他方側第2面領域の広い高さ範囲に洗浄水を届かせ易くできる。   A flush toilet according to a fifth aspect is the flush toilet according to any one of the first to fourth aspects, wherein the swirling flow passes through the one-side second surface region, then passes through the other-side second surface region, and The side second surface region may have a smaller inclination angle with respect to the vertical plane than the one side second surface region. When the swirling flow passes through the other-side second surface region, the water force of the swirling flow becomes weaker than when passing through the one-side second surface region. According to this aspect, even when the swirling flow of the weak water force passes through the other-side second surface region, the washing water can be easily made to reach a wide height range of the other-side second surface region.

第6態様の水洗大便器は、第1から第5態様のいずれかにおいて、前記洗浄水を棚面で受けて前記旋回流の旋回方向に導くための導水路を備え、前記棚面の内周端部は、実質的に左右対称の位置に設けられてもよい。この態様によれば、製造誤差等に起因して棚面等の形状が左右で非対称となった場合、そのことを目視により判別し易くなり、検品作業の容易化を図れる。   A flush toilet according to a sixth aspect is the flush toilet according to any one of the first to fifth aspects, further comprising a headrace for receiving the wash water on a shelf surface and guiding the wash water in a swirling direction of the swirling flow. The ends may be provided at substantially symmetric positions. According to this aspect, when the shape of the shelf surface or the like becomes asymmetrical on the left and right due to a manufacturing error or the like, it is easy to visually determine that, and the inspection work can be facilitated.

第7態様の水洗大便器は、第1から第6態様のいずれかにおいて、前記洗浄水を棚面で受けて前記旋回流の旋回方向に導くための導水路を備え、前記棚面は、前記一方の面部に設けられる前記便鉢部の前端又は後端より前記旋回方向にて前記第2面領域に接続されてもよい。この態様によれば、第2面領域を経由する過程で遠心力を受けて上昇してから下降する洗浄水を棚面で受け易くなる。これに伴い、第2面領域を経由した洗浄水の多くを導水路により遠くまで届かせられる。   A flush toilet according to a seventh aspect is the flush toilet according to any one of the first to sixth aspects, further comprising a headrace for receiving the wash water on a shelf surface and guiding the wash water in a swirling direction of the swirling flow. The stool portion provided on one surface portion may be connected to the second surface region in the turning direction from a front end or a rear end. According to this aspect, it becomes easier for the shelf surface to receive the washing water that rises after receiving centrifugal force in the process of passing through the second surface region and then falls. Along with this, much of the washing water that has passed through the second surface area can be made to reach farther through the headrace.

第8態様の水洗大便器は、第7態様において、前記汚物受け面は、前記便鉢部の前面部に設けられる凹曲面部を有し、前記凹曲面部は、少なくとも前記便鉢部の左右中央部において、前記汚物受け面の下端縁部から前記汚物受け面の外周端部まで連続してもよい。この態様によれば、便鉢部の左右中央部に凸曲面状の棚面の内周端部が設けられない構造となるため、小便の飛沫を抑制できる。   In a flush toilet according to an eighth aspect, in the seventh aspect, in the seventh aspect, the waste receiving surface has a concave curved surface portion provided on a front surface of the toilet bowl portion, and the concave curved surface portion has at least left and right sides of the toilet bowl portion. In the central part, it may be continuous from a lower end edge of the waste receiving surface to an outer peripheral end of the waste receiving surface. According to this aspect, since the inner peripheral end of the convex curved shelf surface is not provided at the left and right central portions of the toilet bowl portion, it is possible to suppress urinal splash.

10…水洗大便器、16…便鉢部、16a…上端内縁部、16b…一端部、16d…左右中央部、22B…後面部、22F…前面部、22L…左側面部、22R…右側面部、22X…一方の面部、24…汚物受け面、24a…外周端部、24b…下端縁部、26…リム部、32…開口部、40…連続面、42…吐水部、44…吐水口、48…導水路、50…棚面、50a…内周端部、56…凹曲面部、58…曲面部、62…増加区間、66…減少区間、70…洗浄水経路、72…上方誘導部、74…内方誘導部、76…オーバーハング面、90…第1面領域、92,94…第2面領域。 Reference Signs List 10: flush toilet, 16: toilet bowl, 16a: upper inner edge, 16b: one end, 16d: left and right center, 22B: rear, 22F: front, 22L: left side, 22R: right side, 22X .., One surface, 24... Filth receiving surface, 24a... Outer peripheral end, 24b... Lower edge, 26... Rim, 32... Headrace channel, 50 ... shelf surface, 50a ... inner peripheral end portion, 56 ... concave curved surface portion, 58 ... curved surface portion, 62 ... increasing section, 66 ... decreasing section, 70 ... washing water path, 72 ... upper guide section, 74 ... Inward guiding portion, 76: overhang surface, 90: first surface region, 92, 94: second surface region.

Claims (9)

鉢状の汚物受け面を有する便鉢部と、
前記便鉢部の上端側部分を形成するリム部と、
前記便鉢部内に洗浄水を吐き出すことによって旋回流を形成する吐水部と、を備え、
前記リム部の内周面は、前記便鉢部の側面部に設けられる第1面領域と、前記便鉢部の前面部及び後面部のうちの少なくとも一方の面部に設けられる第2面領域と、を有し、
前記第1面領域及び前記第2面領域のそれぞれには、前記便鉢部の上端内縁部から前記汚物受け面の外周端部までオーバーハング面が形成されることなく連続する連続面が設けられ、
前記第2面領域の鉛直面に対する傾斜角度は、前記第1面領域の鉛直面に対する傾斜角度より緩やかである水洗大便器。
A toilet bowl portion having a pot-like waste receiving surface,
A rim portion forming an upper end side portion of the toilet bowl portion,
A spouting section that forms a swirling flow by spouting washing water into the toilet bowl section,
An inner peripheral surface of the rim portion has a first surface region provided on a side surface portion of the toilet bowl portion, and a second surface region provided on at least one of the front surface portion and the rear surface portion of the toilet bowl portion. , And
Each of the first surface region and the second surface region is provided with a continuous surface that is continuous without an overhang surface being formed from an inner edge of an upper end of the toilet bowl to an outer edge of the waste receiving surface. ,
A flush toilet, wherein an inclination angle of the second surface region with respect to a vertical surface is gentler than an inclination angle of the first surface region with respect to a vertical surface.
前記吐水部は、前記第1面領域に形成される開口部を通して前記便鉢部内に洗浄水を吐き出す請求項1に記載の水洗大便器。   2. The flush toilet according to claim 1, wherein the water spouting section spouts washing water into the toilet bowl through an opening formed in the first surface area. 3. 前記リム部の内周面には、前記開口部以外の箇所にて、前記便鉢部の全周に亘る範囲で前記連続面が設けられる請求項2に記載の水洗大便器。   3. The flush toilet according to claim 2, wherein the continuous surface is provided on an inner peripheral surface of the rim portion in a range other than the opening portion over an entire circumference of the toilet bowl portion. 4. 前記第2面領域には、前記一方の面部に設けられる一方側第2面領域と、前記便鉢部の前面部及び後面部のうちの他方の面部に設けられる他方側第2面領域と、が含まれる請求項1から3のいずれかに記載の水洗大便器。   In the second surface region, one side second surface region provided on the one surface portion, and the other second surface region provided on the other surface portion of the front surface portion and the rear surface portion of the toilet bowl portion, The flush toilet according to any one of claims 1 to 3, further comprising: 前記旋回流は、前記一方側第2面領域を経由してから前記他方側第2面領域を経由し、
前記他方側第2面領域は、前記一方側第2面領域より鉛直面に対する傾斜角度が緩やかである請求項4に記載の水洗大便器。
The swirling flow passes through the one-side second surface region and then passes through the other-side second surface region,
The flush toilet according to claim 4, wherein the other side second surface area has a gentler inclination angle with respect to a vertical plane than the one side second surface area.
前記洗浄水を棚面で受けて前記旋回流の旋回方向に導く導水路を備え、
前記棚面の内周端部は、実質的に左右対称の位置に設けられる請求項1から5のいずれかに記載の水洗大便器。
A headrace for receiving the washing water on a shelf surface and guiding the washing water in a swirling direction of the swirling flow,
The flush toilet according to any one of claims 1 to 5, wherein an inner peripheral end of the shelf surface is provided at a substantially symmetrical position.
前記洗浄水を棚面で受けて前記旋回流の旋回方向に導くための導水路を備え、
前記棚面は、前記一方の面部に設けられる前記便鉢部の前端又は後端より前記旋回方向にて前記第2面領域に接続される請求項1から6のいずれかに記載の水洗大便器。
A water passage for receiving the washing water on a shelf surface and guiding the washing water in a swirling direction of the swirling flow,
The flush toilet according to any one of claims 1 to 6, wherein the shelf surface is connected to the second surface region in the turning direction from a front end or a rear end of the toilet bowl portion provided on the one surface portion. .
前記汚物受け面は、前記便鉢部の前面部に設けられる凹曲面部を有し、
前記凹曲面部は、少なくとも前記便鉢部の左右中央部において、前記汚物受け面の下端縁部から前記汚物受け面の外周端部まで連続する請求項7に記載の水洗大便器。
The waste receiving surface has a concave curved surface portion provided on a front portion of the toilet bowl portion,
The flush toilet according to claim 7, wherein the concave curved surface portion is continuous from a lower end edge of the waste receiving surface to an outer peripheral end of the waste receiving surface at least in a left and right central portion of the toilet bowl portion.
鉢状の汚物受け面を有する便鉢部と、
前記便鉢部の上端側部分を形成するリム部と、
前記便鉢部内に洗浄水を吐き出すことによって旋回流を形成する吐水部と、を備え、
前記リム部の内周面は、平面視において、第1範囲内の曲率半径の曲面状をなす第1面領域と、前記第1範囲の曲率半径より小さい曲率半径の曲面状をなす第2面領域と、を有し、
前記第1面領域及び前記第2面領域のそれぞれには、前記便鉢部の上端内縁部から前記汚物受け面の外周端部までオーバーハング面が形成されることなく連続する連続面が設けられ、
前記第2面領域の鉛直面に対する傾斜角度は、前記第1面領域の鉛直面に対する傾斜角度より緩やかである水洗大便器。
A toilet bowl portion having a pot-like waste receiving surface,
A rim portion forming an upper end side portion of the toilet bowl portion,
A spouting section that forms a swirling flow by spouting washing water into the toilet bowl section,
The inner peripheral surface of the rim portion has, in plan view, a first surface region having a curved surface having a radius of curvature within a first range, and a second surface having a curved surface having a radius of curvature smaller than the radius of curvature of the first range. And an area,
Each of the first surface region and the second surface region is provided with a continuous surface that is continuous without an overhang surface being formed from an inner edge of an upper end of the toilet bowl to an outer edge of the waste receiving surface. ,
A flush toilet, wherein an inclination angle of the second surface region with respect to a vertical surface is gentler than an inclination angle of the first surface region with respect to a vertical surface.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005098005A (en) * 2003-09-26 2005-04-14 Toto Ltd Flush toilet
JP2016089542A (en) * 2014-11-07 2016-05-23 株式会社Lixil Toilet bowl body
WO2016143029A1 (en) * 2015-03-09 2016-09-15 株式会社Lixil Flush toilet unit
JP2016188575A (en) * 2011-09-21 2016-11-04 パナソニックIpマネジメント株式会社 Flush toilet
JP2017066828A (en) * 2015-10-02 2017-04-06 株式会社Lixil Water closet
JP2017227079A (en) * 2016-06-24 2017-12-28 Toto株式会社 Flush toilet bowl
JP2018105006A (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet bowl

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005098005A (en) * 2003-09-26 2005-04-14 Toto Ltd Flush toilet
JP2016188575A (en) * 2011-09-21 2016-11-04 パナソニックIpマネジメント株式会社 Flush toilet
JP2016089542A (en) * 2014-11-07 2016-05-23 株式会社Lixil Toilet bowl body
WO2016143029A1 (en) * 2015-03-09 2016-09-15 株式会社Lixil Flush toilet unit
JP2017066828A (en) * 2015-10-02 2017-04-06 株式会社Lixil Water closet
JP2017227079A (en) * 2016-06-24 2017-12-28 Toto株式会社 Flush toilet bowl
JP2018105006A (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet bowl

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