JP2016089431A - Flush toilet bowl - Google Patents

Flush toilet bowl Download PDF

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JP2016089431A
JP2016089431A JP2014223457A JP2014223457A JP2016089431A JP 2016089431 A JP2016089431 A JP 2016089431A JP 2014223457 A JP2014223457 A JP 2014223457A JP 2014223457 A JP2014223457 A JP 2014223457A JP 2016089431 A JP2016089431 A JP 2016089431A
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water
main flow
flow
discharge hole
internal
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JP6448985B2 (en
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寛明 筒井
Hiroaki Tsutsui
寛明 筒井
善博 吉澤
Yoshihiro Yoshizawa
善博 吉澤
友樹 足立
Yuki Adachi
友樹 足立
比呂史 山中
Hiroshi Yamanaka
比呂史 山中
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Lixil Corp
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Lixil Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet bowl offering enhanced excreta discharging capability while washing an inner bowl surface with a circulation flow.SOLUTION: A flush toilet bowl includes: a toilet bowl 14 having an inner bowl surface 16 and a water reservoir part 18 formed below the inner bowl surface 16; a drainage channel communicated to the inside of the water reservoir part 18 through an inlet 32 formed at a bottom part of the water reservoir part 18; and a discharge hole 50 from which flushing water is discharged into the inner bowl surface 16 for forming a first main flow F1 circulating inside the inner bowl surface 16, and flushing water is discharged toward the water reservoir part 18 for forming a second main flow F2 flowing into the water reservoir part 18 from the inner bowl surface 16. The first main flow F1 and the second main flow F2 are combined to increase water force of the second main flow F2.SELECTED DRAWING: Figure 10

Description

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

従来より、トイレに設置される大便器に関して、汚物の排出性能を高めるための種々の検討がなされている。特許文献1には、汚物の排出性能を高めるため、洗浄水の流し方を工夫した大便器が提案されている。   Conventionally, various examinations have been made for enhancing the discharge performance of filth for toilets installed in toilets. Patent Document 1 proposes a toilet bowl that is devised in terms of the flow of washing water in order to enhance the discharge performance of filth.

詳細には、特許文献1の大便器では、便鉢の鉢面部の下方に溜水部が設けられ、溜水部の底部に排水路の入口が設けられる。鉢面部内には第1リム吐水部から鉢面部内を旋回する洗浄水が吐水され、その一部は鉢面部の前方から溜水部に流入する。また、鉢面部内には第2リム吐水部から鉢面部内を旋回する他の洗浄水が吐水され、その洗浄水は鉢面部の横方向から溜水部に流入する。これらにより、溜水部内の溜水を上下方向に攪拌し、汚物を溜水内に沈めて排水路内に効率よく排出できると記載されている。   In detail, in the toilet bowl of patent document 1, the reservoir part is provided below the bowl surface part of a toilet bowl, and the entrance of a drainage channel is provided in the bottom part of a reservoir part. Wash water that swirls in the pot surface portion is discharged from the first rim water discharge portion into the pot surface portion, and a part of the water flows into the reservoir portion from the front of the pot surface portion. Moreover, the other wash water which turns in the bowl surface part from the 2nd rim water discharging part is discharged into the bowl surface part, and the washing water flows into the water storage part from the lateral direction of the bowl surface part. It is described that, by these, the water stored in the water storage portion can be stirred up and down, and the filth can be submerged in the water and efficiently discharged into the drainage channel.

特許第5553188号Japanese Patent No. 5553188

ところで、特許文献1の水洗大便器のように、各リム吐水部から吐水した洗浄水により鉢面部内を旋回する旋回流を形成する場合、水量を抑えつつ鉢面部内の広い範囲を洗浄できる利点があるものの、溜水部に流入する水流の水勢が弱くなるという問題点もある。つまり、特許文献1の水洗大便器では、第1リム吐水部、第2リム吐水部から鉢面部の立面部に沿うように洗浄水が吐水され、各洗浄水は鉢面部内を旋回してから溜水部に流入している。よって、各洗浄水は鉢面部内を旋回する過程で水勢が失われるうえ、鉢面部の立面部と当たることで勢いが失われてしまい、溜水部には水勢の弱い水流しか流入できなくなる。溜水部に流入する水流の水勢が弱いと、溜水部内の汚物を排水路に排出し難くなるため、その改善が求められる。   By the way, like the flush toilet of Patent Document 1, when forming a swirling flow that swirls in the bowl surface portion with the washing water discharged from each rim water spouting portion, it is possible to wash a wide range in the bowl surface portion while suppressing the amount of water. However, there is also a problem that the water current flowing into the reservoir is weak. That is, in the flush toilet of Patent Document 1, wash water is discharged from the first rim water discharge portion and the second rim water discharge portion along the elevation surface portion of the bowl surface portion, and each wash water swirls in the pot surface portion. Flowing into the reservoir. Therefore, each washing water loses its water force in the process of swirling in the pot surface part, and loses its momentum by hitting the elevation part of the pot surface part, so that only a weak water flow can flow into the reservoir part. . If the water flow of the water flowing into the water reservoir is weak, it becomes difficult to discharge the filth in the water reservoir to the drainage channel.

本発明は、このような課題に鑑みてなされ、その目的は、鉢面部内を旋回流により洗浄しつつ、汚物の排出能力を高められる水洗大便器を提供することにある。   This invention is made | formed in view of such a subject, The objective is to provide the flush toilet which can raise the discharge | emission capability of filth, wash | cleaning the inside of a bowl surface part by a swirl flow.

上記課題を解決するために、本発明のある態様の水洗大便器は、鉢面部と、鉢面部の下方に形成される溜水部と、を有する便鉢と、溜水部の底部に形成される入口を通して溜水部内に連通される排水路と、鉢面部内に洗浄水を吐き出し、鉢面部内で旋回する第1主流を形成する第1吐水部と、溜水部に向けて洗浄水を吐き出し、鉢面部内から溜水部に流入する第2主流を形成する第2吐水部と、を備え、第1主流が第2主流と合流することにより、第2主流の水勢を増幅させるように構成される。
この態様によれば、吐水孔から溜水部に向けて吐き出される洗浄水により第2主流が形成されるため、溜水部以外に向けて洗浄水を吐き出すよりも、強い水勢の第2主流が溜水部内に流入できる。また、第1主流と第2主流との合流により第2主流の水勢を増幅させるため、更に強い水勢の第2主流が流入でき、溜水部内の汚物を排水路に排出させ易くなる。よって、鉢面部内を旋回する第1主流により鉢面部内を洗浄しつつ、汚物の排出能力を高められる。
In order to solve the above-described problems, a flush toilet according to an aspect of the present invention is formed on a toilet bowl having a bowl surface part, a reservoir part formed below the bowl surface part, and a bottom part of the reservoir part. A drainage channel that communicates with the reservoir through the inlet, a first discharger that discharges the washwater into the bowl surface, and forms a first main flow that swirls within the bowl surface, and the washwater toward the reservoir And a second water discharge portion that forms a second main flow that flows into the reservoir portion from the bowl surface portion, and the first main flow merges with the second main flow so as to amplify the water flow of the second main flow. Composed.
According to this aspect, since the second main flow is formed by the wash water discharged from the water discharge hole toward the reservoir, the second main flow having a stronger water force than the discharge of the wash water toward other than the reservoir. Can flow into the reservoir. In addition, since the water flow of the second main flow is amplified by the merging of the first main flow and the second main flow, the second main flow having a stronger water flow can flow in, and the filth in the water reservoir can be easily discharged to the drainage channel. Therefore, the waste discharge capability can be enhanced while washing the inside of the bowl surface portion by the first mainstream swirling inside the bowl surface portion.

前述の態様において、溜水部は、第2主流によって、排水路の入口に上から下に向かう誘導流を形成するように構成されてもよい。
この態様によれば、溜水部内に流入した強い水勢の第2主流により、強い水勢の誘導流を形成でき、その誘導流により溜水部内の汚物を排水路に勢いよく押し流せるようになり、汚物の排出能力を更に高められる。
In the above-described aspect, the water reservoir may be configured to form an induced flow from the top to the bottom at the inlet of the drainage channel by the second main flow.
According to this aspect, it is possible to form a strong water flow induced flow by the strong water second main flow that has flowed into the water reservoir, and the induced flow allows the filth in the water reservoir to be pushed into the drainage channel vigorously. The waste discharge capacity can be further increased.

前述の態様において、第2主流は、溜水部の内周面に沿って流入してもよい。
この態様によれば、第2主流は溜水部の内周面に沿ってスムーズに方向変換し易くなる。よって、第2主流の流入方向前方に位置する壁面に第2主流が衝突するときの勢いを水平方向に逃がし易くなり、鉢面部内への第2主流の乗り上げを防止できる。
In the aforementioned aspect, the second main flow may flow along the inner peripheral surface of the water reservoir.
According to this aspect, the second main flow can be easily changed in direction smoothly along the inner peripheral surface of the water reservoir. Therefore, the moment when the second main flow collides with the wall surface located in front of the second main flow in the inflow direction can be easily released in the horizontal direction, and the second main flow can be prevented from riding into the bowl surface portion.

前述の態様において、第1主流は、鉢面部内での旋回途中に第1分流と第2分流を形成し、第1分流は、鉢面部内を更に旋回してから鉢面部内で第2主流と合流し、第2分流は、溜水部内の第2主流と合流し、これらにより、第2主流の水勢を増幅させてもよい。
この態様によれば、鉢面部内の広い範囲を第1主流により洗浄しつつ、多くの第1主流を無駄にせずに第2主流の水勢を大きく増幅できる。
In the above-described aspect, the first main flow forms a first diversion and a second diversion during the turning in the bowl surface portion, and the first diversion further swirls in the pot surface portion and then the second main flow in the pot surface portion. The second branch stream may merge with the second main stream in the water reservoir, thereby amplifying the water flow of the second main stream.
According to this aspect, it is possible to greatly amplify the water flow of the second mainstream without wasting a lot of the first mainstream while washing a wide range in the bowl surface portion with the first mainstream.

前述の態様において、第1吐水部と第2吐水部は、鉢面部に形成される単一の吐水孔であってもよい。
この態様によれば、洗浄水を吐き出して第1主流、第2主流を形成するうえで、別々の吐水孔を鉢面部に設けずともよくなり、清掃時の作業性が良好になる。
In the above-mentioned aspect, the 1st water discharging part and the 2nd water discharging part may be a single water discharging hole formed in the bowl surface part.
According to this aspect, in discharging the cleaning water to form the first main flow and the second main flow, it is not necessary to provide separate water discharge holes in the bowl surface portion, and the workability during cleaning is improved.

前述の態様において、吐水孔の上流側に設けられる通水部と、通水部内に洗浄水を吐き出し、吐水孔に供給される第1内部主流を形成する第1吐出部と、通水部内に洗浄水を吐き出し、吐水孔に供給される第2内部主流を形成する第2吐出部と、を備え、吐水孔に供給される第1内部主流及び第2内部主流により第1主流及び第2主流が形成されてもよい。
この態様によれば、各内部主流が吐水孔に供給されるときの水勢、流れ方向、流量等の調整により、第1主流、第2主流の水勢、流れ方向、流量等を様々に調整できる。
In the above-mentioned aspect, in the water flow part provided in the upstream of a water discharge hole, the 1st discharge part which discharges washing water in a water flow part, and forms the 1st internal mainstream supplied to a water discharge hole, and in a water flow part A second discharge part that discharges the wash water and forms a second internal main flow supplied to the water discharge hole, and the first main flow and the second main flow by the first internal main flow and the second internal main flow supplied to the water discharge hole May be formed.
According to this aspect, the first main flow, the second main flow, the flow direction, the flow rate, and the like can be variously adjusted by adjusting the water flow, flow direction, flow rate, and the like when each internal main flow is supplied to the water discharge hole.

前述の態様において、吐水孔に第1内部主流が先に供給されることにより、第2主流より第1主流の流量が多くなるように第1主流及び第2主流が形成され、その後に吐水孔に第1内部主流及び第2内部主流が供給されることにより、第1主流より第2主流の流量が多くなるように第1主流及び第2主流が形成されてもよい。
この態様によれば、吐水孔に第1内部主流が供給されている状態では、吐水孔から吐き出される洗浄水の多くを第1主流に用い、鉢面部内の汚物を溜水部内に洗い落とし易くなる。また、鉢面部内の広い範囲の汚物を第1主流により洗い落とした後は、多くの洗浄水を第1主流に用いても、汚物の排出能力が向上し難く洗浄水が無駄になり易い。この点、吐水孔に第1内部主流、第2内部主流が供給されている状態では、汚物の排出能力の向上に寄与し難い第1主流の流量を減らし、排出能力の向上に寄与する第2主流の流量を多くでき、洗浄水の無駄を抑えつつ汚物の排出能力を高められる。
In the above-described aspect, the first main main flow is supplied to the water discharge hole first, so that the first main flow and the second main flow are formed so that the flow rate of the first main flow is larger than the second main flow, and then the water discharge hole. The first main flow and the second main flow may be formed so that the flow rate of the second main flow is larger than that of the first main flow by supplying the first internal main flow and the second internal main flow.
According to this aspect, in the state where the first internal main flow is supplied to the water discharge hole, most of the washing water discharged from the water discharge hole is used for the first main flow, and the filth in the bowl surface portion is easily washed out into the water storage portion. . Further, after washing a wide range of filth in the pot surface portion by the first main stream, even if a large amount of wash water is used in the first main stream, the discharge capacity of the filth is difficult to improve and the wash water tends to be wasted. In this regard, in a state where the first internal main flow and the second internal main flow are supplied to the water discharge hole, the flow rate of the first main flow that is difficult to contribute to the improvement of the discharge capability of the filth is reduced, and the second contributes to the improvement of the discharge capability. The main flow rate can be increased, and waste discharge capacity can be increased while reducing waste of washing water.

前述の態様において、通水部は、第1内部主流又は第2内部主流の何れか一方が衝突し、その衝突した内部主流を吐水孔に導く導水部を有してもよい。
この態様によれば、第1内部主流又は第2内部主流の一方は導水部に衝突して水勢を弱めてから吐水孔に導かれるため、第1内部主流又は第2内部主流の他方と合流するときに生じる飛沫を低減できる。
In the above-described aspect, the water flow section may include a water guiding section that collides with either the first internal main flow or the second internal main flow and guides the collided internal main flow to the water discharge hole.
According to this aspect, since one of the first internal main flow or the second internal main flow collides with the water guide portion and weakens the water force and is guided to the water discharge hole, it merges with the other of the first internal main flow or the second internal main flow. Splashes that sometimes occur can be reduced.

前述の態様において、吐水孔は便鉢内と通水部内を隔てる壁部に形成され、導水部は、壁部により一部が形成されてもよい。
この態様によれば、吐水孔は導水部の近傍に設けられることになる。よって、導水部に衝突した内部主流は導水部の近傍にある吐水孔から早期に吐き出され、通水部内の他の箇所に流出し難くなり、吐水孔からは大流量の内部主流を吐き出し易くなる。この結果、通水部に供給した多くの洗浄水を無駄にせずに大流量の主流を便鉢内に形成でき、便鉢内の洗浄力を高められる。
In the above-described aspect, the water discharge hole may be formed in the wall part separating the toilet bowl and the water passage part, and the water guide part may be partially formed by the wall part.
According to this aspect, the water discharge hole is provided in the vicinity of the water guiding portion. Therefore, the internal main flow that has collided with the water conveyance section is discharged from the water discharge hole in the vicinity of the water conveyance section at an early stage, and it is difficult for the main flow to flow out to other places in the water flow section. . As a result, a main flow having a large flow rate can be formed in the toilet bowl without wasting a lot of washing water supplied to the water flow section, and the cleaning power in the toilet bowl can be enhanced.

前述の態様において、第1内部主流及び第2内部主流は通水部内で合流した後に吐水孔から吐き出されてもよい。
この態様によれば、各内部主流を便鉢内で合流させるよりも、各内部主流が合流したときに生じる飛沫の飛散範囲を制限でき、便鉢内から外側への飛沫の飛散を防止できる。
In the above-described aspect, the first internal main flow and the second internal main flow may be discharged from the water discharge hole after joining in the water flow portion.
According to this aspect, rather than merging the internal mainstreams in the stool, it is possible to limit the splashing range of the droplets generated when the internal mainstreams merge, and to prevent the splashing from the stool to the outside.

前述の態様において、通水部の内壁面には、吐水孔に向かうにつれて通水部の高さ寸法を狭めるように傾斜する誘導面が形成されてもよい。
この態様によれば、吐水孔に向けて供給される内部主流の一部が誘導面に当たると、その水流は誘導面に沿って吐水孔に誘導されることで整流される。この結果、吐水孔の直前での水流の乱れを抑えられ、吐水孔からの飛沫の飛散を抑えられる。
In the above-mentioned aspect, the guide surface which inclines so that the height dimension of a water flow part may be narrowed may be formed in the inner wall surface of a water flow part as it goes to a water discharge hole.
According to this aspect, when a part of the internal main flow supplied toward the water discharge hole hits the guide surface, the water flow is rectified by being guided to the water discharge hole along the guide surface. As a result, the disturbance of the water flow immediately before the water discharge hole can be suppressed, and the splash of the splash from the water discharge hole can be suppressed.

本発明によれば、鉢面部内を旋回する第1主流により鉢面部内を洗浄しつつ、汚物の排出能力を高められる。   ADVANTAGE OF THE INVENTION According to this invention, the discharge | emission capacity | capacitance of filth can be improved, washing | cleaning the inside of a bowl surface part by the 1st mainstream which turns in the bowl surface part.

第1実施形態に係る水洗大便器の側面断面図である。It is side surface sectional drawing of the flush toilet concerning 1st Embodiment. 第1実施形態に係る水洗大便器の平面断面図である。It is a plane sectional view of the flush toilet concerning a 1st embodiment. 図2のA−A線断面図である。It is the sectional view on the AA line of FIG. 第1実施形態に係る水洗大便器の通水部の内部を示す平面断面図である。It is a plane sectional view showing the inside of the water flow part of the flush toilet concerning the first embodiment. 図2のB−B線断面図である。FIG. 3 is a sectional view taken along line B-B in FIG. 2. 第1実施形態に係る水洗大便器の通水部内での各内部主流の流れ方を示す図である。It is a figure which shows how each internal mainstream flows in the water flow part of the flush toilet concerning 1st Embodiment. 第1実施形態に係る水洗大便器の通水部内での各内部主流の流れ方を示す他の図である。It is another figure which shows how each internal mainstream flows in the water flow part of the flush toilet which concerns on 1st Embodiment. 第1実施形態に係る水洗大便器の便鉢内での主流の流れ方を示す平面断面図である。It is a plane sectional view showing how the mainstream flows in the toilet bowl of the flush toilet according to the first embodiment. 第1実施形態に係る水洗大便器の便鉢内での主流の流れ方を示す側面断面図である。It is side surface sectional drawing which shows the way of the mainstream in the toilet bowl of the flush toilet bowl which concerns on 1st Embodiment. 第1実施形態に係る水洗大便器の便鉢内での主流の流れ方を示す他の平面断面図である。It is another plane sectional view showing how the mainstream flows in the toilet bowl of the flush toilet according to the first embodiment. 第1実施形態に係る分配器の内部構造の一部を示す部分断面側面図である。It is a fragmentary sectional side view which shows a part of internal structure of the divider | distributor which concerns on 1st Embodiment. 図11(a)は第1実施形態に係る通水部の吐水孔周りを示す側面断面図であり、図11(b)は第2実施形態に係る通水部の吐水孔周りを示す側面断面図である。Fig.11 (a) is side sectional drawing which shows the periphery of the water discharge hole of the water flow part which concerns on 1st Embodiment, FIG.11 (b) is side surface cross section which shows the water discharge hole periphery of the water flow part which concerns on 2nd Embodiment. FIG. 第3実施形態に係る水洗大便器を示す平面図である。It is a top view which shows the flush toilet concerning 3rd Embodiment.

以下、各実施形態では、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。また、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する。   Hereinafter, in each embodiment, the same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted. Moreover, in each drawing, a part of component is abbreviate | omitted suitably for convenience of explanation.

[第1の実施の形態]
図1は第1実施形態に係る水洗大便器10の側面断面図である。以下の説明では、水洗大便器10の便座(図示せず)に通常の姿勢で座る人の向きを基準として前後左右を表す。水洗大便器10は、便器本体12の前部に設けられる便鉢14を備える。便鉢14は、上側に開放する鉢面部16と、鉢面部16の下縁部から下方に窪んで形成される溜水部18とを有する。
[First Embodiment]
FIG. 1 is a side sectional view of a flush toilet 10 according to the first embodiment. In the following description, front, rear, left and right are represented with reference to the direction of a person sitting in a normal posture on a toilet seat (not shown) of the flush toilet 10. The flush toilet 10 includes a toilet bowl 14 provided at the front part of the toilet body 12. The toilet bowl 14 includes a bowl surface portion 16 that opens upward, and a water storage portion 18 that is formed to be recessed downward from the lower edge portion of the bowl surface portion 16.

図2は水洗大便器10の平面断面図である。
鉢面部16は、平面視にて左右寸法より前後寸法の大きい楕円状に形成される。溜水部18は、平面視にて便鉢14の左右方向の略中央位置であって、前後方向の中央部分より後方寄りの位置に配置される。
FIG. 2 is a plan sectional view of the flush toilet 10.
The bowl surface portion 16 is formed in an elliptical shape having a front-rear dimension larger than a left-right dimension in plan view. The water reservoir 18 is arranged at a substantially central position in the left-right direction of the toilet bowl 14 in a plan view and closer to the rear than the central part in the front-rear direction.

鉢面部16は、図1に示すように、汚物を受けるための受け面部22と、受け面部22の上縁部から略鉛直に立ち上がる立面部24と、を有する。受け面部22と立面部24は環状に連続し、受け面部22は鉢面部16の中央側に向けて下り勾配で傾斜する。溜水部18は、底部26と、鉢面部16の下縁部と底部26を接続する立壁部28と、を有する。底部26の後方領域には便鉢14内の汚物を排出するための排水路30の入口32が形成される。立壁部28は鉢面部16の下縁部から垂下するとともに環状に連続して設けられる。立壁部28は、水平面に対する勾配が受け面部22より大きくなる。   As shown in FIG. 1, the bowl surface portion 16 includes a receiving surface portion 22 for receiving filth and an elevation surface portion 24 that rises substantially vertically from the upper edge portion of the receiving surface portion 22. The receiving surface portion 22 and the elevation surface portion 24 are annularly continuous, and the receiving surface portion 22 is inclined with a downward slope toward the center side of the bowl surface portion 16. The water reservoir 18 has a bottom 26 and a standing wall 28 that connects the bottom edge of the pot surface 16 and the bottom 26. In the rear region of the bottom portion 26, an inlet 32 of the drainage channel 30 for discharging the filth in the toilet bowl 14 is formed. The standing wall portion 28 hangs from the lower edge portion of the bowl surface portion 16 and is provided continuously in an annular shape. The standing wall portion 28 has a larger gradient than the receiving surface portion 22 with respect to the horizontal plane.

立壁部28は、図2に示すように、左右一方寄りの前側、つまり、右前側に設けられる右前壁部34(第1壁部)と、左右他方寄りの前側、つまり、左前側に設けられる左前壁部36(第2壁部)とを含む。右前壁部34と左前壁部36は各々の前端部が接続され、その接続部は外向きに凸状に湾曲する。また、右前壁部34及び左前壁部36は、底部26に対して、外向きに凸状に湾曲する角部27を介して接続される。   As shown in FIG. 2, the standing wall 28 is provided on the right front wall 34 (first wall) provided on the front side on the left and right sides, that is, on the right front side, and on the front side on the left and right other side, ie, on the left front side Left front wall portion 36 (second wall portion). The right front wall portion 34 and the left front wall portion 36 are connected at their front end portions, and the connecting portions are curved outwardly in a convex shape. The right front wall portion 34 and the left front wall portion 36 are connected to the bottom portion 26 via a corner portion 27 that curves outwardly in a convex shape.

排水路30は、図1に示すように、入口32を通して溜水部18内に連通される。排水路30は、上流側に設けられるトラップ部38と、下流側に設けられる接続配管40とを有する。トラップ部38の一部には洗浄水が溜まり、通水方向での空気の流れが洗浄水により遮断される。このとき、溜水部18内には洗浄水が溜水42として貯溜される。接続配管40は、トラップ部38の下流端部に設けられる排出口44と、便器本体12が設置される床面46に開口する排水管の流入口(図示せず)とを連通する。接続配管40には排出口44の下側に絞り部48が形成される。排水路30を通して洗浄水が排出されるとき、排水路30内では洗浄水が絞り部48と衝突等して水膜が形成され、水膜によりサイホン作用の発生が促進される。   As shown in FIG. 1, the drainage channel 30 communicates with the water reservoir 18 through the inlet 32. The drainage channel 30 includes a trap portion 38 provided on the upstream side and a connection pipe 40 provided on the downstream side. Wash water accumulates in a part of the trap portion 38, and the air flow in the direction of water flow is blocked by the wash water. At this time, the wash water is stored in the water reservoir 18 as the water 42. The connection pipe 40 communicates a discharge port 44 provided at the downstream end of the trap portion 38 and an inflow port (not shown) of a drain pipe that opens in the floor surface 46 where the toilet body 12 is installed. The connecting pipe 40 is formed with a throttle portion 48 below the discharge port 44. When the cleaning water is discharged through the drainage channel 30, the cleaning water collides with the throttle part 48 in the drainage channel 30 to form a water film, and the water film promotes the generation of siphon action.

図3は図2のA−A線断面図である。
鉢面部16の後部には、図2、図3に示すように、吐水孔50が形成される。吐水孔50は、溜水部18より後方であって、便鉢14の前方から見て左右方向の中心位置より左寄りの位置に形成される。また、吐水孔50は立面部24の高さ方向の途中位置に形成される。吐水孔50は左右方向に長い長孔である。吐水孔50からは洗浄水が吐き出され、後述するように、鉢面部16の右側領域に向かう第1主流F1と、溜水部18に向かう第2主流F2とが形成される。
3 is a cross-sectional view taken along line AA in FIG.
As shown in FIGS. 2 and 3, a water discharge hole 50 is formed in the rear part of the bowl surface portion 16. The water discharge hole 50 is formed at a position behind the water reservoir 18 and on the left side of the center position in the left-right direction when viewed from the front of the toilet bowl 14. Further, the water discharge hole 50 is formed at an intermediate position in the height direction of the upright portion 24. The water discharge hole 50 is a long hole long in the left-right direction. Wash water is discharged from the water discharge holes 50, and a first main flow F1 directed to the right region of the bowl surface portion 16 and a second main flow F2 directed to the water storage portion 18 are formed as described later.

便器本体12の上面部には、図1に示すように、後述する通水部76の後方に収納部52が形成される。収納部52は便器本体12の上面部にて窪んで形成される。収納部52上には洗浄水を貯留する貯水タンク56が取り付けられる。収納部52内には貯水タンク56から供給される洗浄水を分配する分配器58の一部が配置される。   As shown in FIG. 1, a storage portion 52 is formed on the upper surface of the toilet body 12 behind a water passage portion 76 described later. The storage portion 52 is formed to be recessed in the upper surface portion of the toilet body 12. A water storage tank 56 for storing cleaning water is attached on the storage unit 52. A part of a distributor 58 that distributes the wash water supplied from the water storage tank 56 is disposed in the storage unit 52.

分配器58は、図2に示すように、貯水タンク56から洗浄水が流入する流入部60と、流入部60の下流端部から左右方向の外向きに分岐して設けられる左側分岐部62(第1分岐部)及び右側分岐部64(第2分岐部)とを有する。   As shown in FIG. 2, the distributor 58 includes an inflow portion 60 into which cleaning water flows from the water storage tank 56, and a left branch portion 62 (branched outward from the downstream end of the inflow portion 60 in the left-right direction). A first branch part) and a right branch part 64 (second branch part).

流入部60は上下方向に延在する管体であり、その上端部が貯水タンク56の排水口(図示せず)に接続される。左側分岐部62及び右側分岐部64は可撓性及び伸縮性を有する蛇腹状の管体であり、収納部52に形成される挿通孔66に挿通される。分配器58には、流入部60と各分岐部62、64との根元部の前方に接続口68が設けられ、その接続口68には右側吐出部70(第1吐出部)が接続される。右側吐出部70は硬質な管体であり、収納部52の挿通孔66に挿通される。左側分岐部62の下流端部には左側吐出部72(第2吐出部)が接続される。左側吐出部72は管体であり、可撓性及び伸縮性を有する蛇腹状に一部が構成される。右側分岐部64の下流端部74は閉塞される。   The inflow portion 60 is a tubular body extending in the vertical direction, and an upper end portion thereof is connected to a drain port (not shown) of the water storage tank 56. The left branch part 62 and the right branch part 64 are bellows-like tubes having flexibility and stretchability, and are inserted through insertion holes 66 formed in the storage part 52. The distributor 58 is provided with a connection port 68 in front of the root portion of the inflow portion 60 and the branch portions 62 and 64, and the right discharge portion 70 (first discharge portion) is connected to the connection port 68. . The right discharge part 70 is a hard tube and is inserted into the insertion hole 66 of the storage part 52. A left discharge part 72 (second discharge part) is connected to the downstream end of the left branch part 62. The left discharge part 72 is a tubular body, and a part thereof is configured in a bellows shape having flexibility and stretchability. The downstream end 74 of the right branch 64 is closed.

図4は便器本体12に設けられる中空構造の通水部76の内部を示す平面断面図である。
便器本体12には、便鉢14の後方に通水部76が設けられる。通水部76は吐水孔50の上流側に設けられる。通水部76は、便鉢14の鉢面部16の一部であって、便鉢14内と通水部76内とを隔てる前壁部78を有する。
FIG. 4 is a plan cross-sectional view showing the inside of a hollow water passage 76 provided in the toilet body 12.
The toilet body 12 is provided with a water passing portion 76 behind the toilet bowl 14. The water flow portion 76 is provided on the upstream side of the water discharge hole 50. The water flow part 76 is a part of the bowl surface part 16 of the toilet bowl 14, and has a front wall part 78 that separates the toilet bowl 14 and the water flow part 76.

通水部76は、前後方向の中間位置で左右方向の内寸法を狭めるとともに、その中間位置から前後方向の両側に向かうにつれて内寸法を広げる形状に形成される段差部80を有する。通水部76の下壁面82は、段差部80を境界として左右方向内側の方が外側より低位置となるように高低差が設けられる。通水部76の左右方向の内寸法が狭くなる部位には孔壁部84が設けられ、孔壁部84内には上下に貫通する取付孔86が形成される。取付孔86には、便器本体12に便座を取り付けるためのねじ等の固定具(図示せず)が挿通される。   The water flow portion 76 has a stepped portion 80 formed in a shape that narrows the inner dimension in the left-right direction at an intermediate position in the front-rear direction and increases the inner dimension from the intermediate position toward both sides in the front-rear direction. The lower wall surface 82 of the water flow portion 76 is provided with a height difference so that the inner side in the left-right direction is positioned lower than the outer side with the stepped portion 80 as a boundary. A hole wall portion 84 is provided in a portion where the inner dimension in the left-right direction of the water flow portion 76 becomes narrow, and a mounting hole 86 penetrating vertically is formed in the hole wall portion 84. A fixing tool (not shown) such as a screw for attaching the toilet seat to the toilet body 12 is inserted into the attachment hole 86.

通水部76の下壁面82には、勾配を有する案内領域83が設けられる。案内領域83は、本例では、下壁面82の全域に亘り設けられる。案内領域83の勾配は、前壁部78と下壁面82との間の隅角部85の左右方向中心位置(図4の領域B1)まで、案内領域83上の洗浄水を案内可能に設けられる。本図では案内領域83の勾配を矢印で示す。   A guide area 83 having a gradient is provided on the lower wall surface 82 of the water flow portion 76. In this example, the guide area 83 is provided over the entire lower wall surface 82. The gradient of the guide region 83 is provided so that the cleaning water on the guide region 83 can be guided to the center position (region B1 in FIG. 4) of the corner portion 85 between the front wall portion 78 and the lower wall surface 82. . In this figure, the gradient of the guide area 83 is indicated by an arrow.

通水部76には、鉢面部16寄りの位置に導水部88が設けられる。導水部88は、前壁部78と段差部80との一部により前後に挾まれて形成される。導水部88は、便鉢14の前方から見て左右方向の中心位置より左寄りの位置に形成される吐水孔50よりも、更に左側にずれた位置に設けられる。導水部88は通水部76内で左右方向の外側に袋小路となるように形成される。   The water flow portion 76 is provided with a water guide portion 88 at a position near the pot surface portion 16. The water guide portion 88 is formed by being squeezed back and forth by a part of the front wall portion 78 and the stepped portion 80. The water guide portion 88 is provided at a position further shifted to the left side from the water discharge hole 50 formed at the left side of the center position in the left-right direction when viewed from the front of the toilet bowl 14. The water guide portion 88 is formed in the water passing portion 76 so as to form a bag path on the outer side in the left-right direction.

図5は図2のB−B線断面の一部を示す図である。
右側吐出部70の先端部には、図2、図5に示すように、右側吐出口90(第1吐出口)が形成される。右側吐出口90は、右側吐出部70の先端部から右向きであって斜め前側に向けて開放する。右側吐出口90からは吐水孔50に向けて洗浄水が吐き出されて第1内部主流F3が形成される。左側吐出部72の先端部には、左側吐出口92(第2吐出口)が形成される。左側吐出口92は、左側吐出部72の先端部から左右方向の一方である右向きであって、斜め下側に向けて開放する。左側吐出口92からは導水部88の後側内壁面88aに向けて洗浄水が吐き出されて第2内部主流F4が形成される。本図では各内部主流F3、F4の流れ方向に符号を付して示す。
FIG. 5 is a view showing a part of a cross section taken along line BB of FIG.
As shown in FIGS. 2 and 5, a right discharge port 90 (first discharge port) is formed at the tip of the right discharge unit 70. The right discharge port 90 opens rightward from the front end portion of the right discharge unit 70 and obliquely forward. Wash water is discharged from the right discharge port 90 toward the water discharge hole 50 to form a first internal main flow F3. A left discharge port 92 (second discharge port) is formed at the tip of the left discharge unit 72. The left discharge port 92 faces rightward, which is one of the left and right directions, from the front end portion of the left discharge portion 72 and opens obliquely downward. Washing water is discharged from the left discharge port 92 toward the rear inner wall surface 88a of the water guide section 88 to form a second internal main flow F4. In this figure, the flow directions of the internal mainstreams F3 and F4 are indicated with reference numerals.

次に、以上の水洗大便器10を用いた便鉢14の洗浄方法とともに、洗浄水の流れ方を説明する。図1に示すように、貯水タンク56内の洗浄水を排水して便器洗浄を行うと、分配器58に洗浄水が供給される。図2に示すように、分配器58には流入部60に洗浄水が流入し、流入した洗浄水は右側吐出部70と左側吐出部72に分配され、各吐出部70、72の吐出口90、92から洗浄水が吐き出される。   Next, the method for washing the toilet bowl 14 using the flush toilet 10 will be described, along with how the washing water flows. As shown in FIG. 1, when the flush water in the water storage tank 56 is drained and toilet flushing is performed, the flush water is supplied to the distributor 58. As shown in FIG. 2, the wash water flows into the inflow portion 60 into the distributor 58, and the wash water that has flowed in is distributed to the right discharge portion 70 and the left discharge portion 72, and the discharge ports 90 of the discharge portions 70 and 72. , 92 is discharged from the washing water.

図6は通水部76内での各内部主流F3、F4の流れ方を示す図である。本図では第1内部主流F3の流れる主な範囲に符号を付し、第2内部主流F4の流れ方向を示す矢印に符号を付して示す。
第1内部主流F3は右側吐出口90から吐水孔50に向けて流れ、吐水孔50に供給される。この流れ方向は吐水孔50を通った後に鉢面部16の右側領域16aに向かう方向となる。第1内部主流F3は、前壁部78の吐水孔50周りの部位に当たって分散しつつ、その大半が勢いよく吐水孔50から吐き出される。
FIG. 6 is a view showing how the internal main flows F3 and F4 flow in the water flow section 76. FIG. In this figure, the main range in which the first internal main flow F3 flows is indicated by a reference numeral, and the arrow indicating the flow direction of the second internal main flow F4 is indicated by a reference numeral.
The first internal main flow F3 flows from the right discharge port 90 toward the water discharge hole 50 and is supplied to the water discharge hole 50. This flow direction is a direction toward the right region 16 a of the bowl surface portion 16 after passing through the water discharge hole 50. The first internal main flow F <b> 3 hits and disperses the portion around the water discharge hole 50 of the front wall portion 78, and most of the first internal main flow F <b> 3 is rapidly discharged from the water discharge hole 50.

第1内部主流F3の形成に寄与する洗浄水は、分配器58内で第2内部主流F4の形成に寄与する洗浄水と分かれてから吐水孔50に供給される。各内部主流F3、F4の形成に寄与する洗浄水が分配器58で分かれてから吐水孔50に供給されるまでに通る経路の長さを経路長とすると、第1内部主流F3の形成に寄与する洗浄水の経路長は、第2内部主流F4の形成に寄与する洗浄水の経路長より短くなるように調整される。これにより、第1内部主流F3は第2内部主流F4より吐水孔50に先に供給され、その第1内部主流F3が吐水孔50から吐き出されることにより、左右方向に横長な第1吐水流Faが形成される。以下、この状態を第1状態という。   The cleaning water contributing to the formation of the first internal main flow F3 is supplied to the water discharge holes 50 after being separated from the cleaning water contributing to the formation of the second internal main flow F4 in the distributor 58. If the length of the path through which the wash water contributing to the formation of the internal main flows F3 and F4 is divided by the distributor 58 and supplied to the water discharge holes 50 is defined as the path length, it contributes to the formation of the first internal main flow F3. The path length of the cleaning water to be adjusted is adjusted to be shorter than the path length of the cleaning water contributing to the formation of the second internal main flow F4. Accordingly, the first internal main flow F3 is supplied to the water discharge hole 50 earlier than the second internal main flow F4, and the first internal main flow F3 is discharged from the water discharge hole 50, whereby the first water discharge Fa that is horizontally long in the left-right direction. Is formed. Hereinafter, this state is referred to as a first state.

第1吐水流Faは溜水部18の上方を一部が通るとともに、鉢面部16の右側領域16a上を残部が通るように吐水孔50から吐き出される。第1吐水流Faの一部は溜水部18の上方を通るときに分流されて第1主流F1を形成し、残部が第2主流F2を形成する。第1状態にあるとき、第2主流F2より第1主流F1の流量が多くなる。   The first water discharge Fa is discharged from the water discharge hole 50 so that a part thereof passes above the water reservoir 18 and the remaining part passes over the right region 16 a of the bowl surface part 16. A part of the first water discharge Fa is divided when passing over the reservoir 18 to form the first main flow F1, and the remaining part forms the second main flow F2. When in the first state, the flow rate of the first main flow F1 is larger than that of the second main flow F2.

第2内部主流F4は左側吐出口92から導水部88の後側内壁面88aに向けて流れ、後側内壁面88aと衝突し、導水部88の左右方向の外側(図6中左側)に送り込まれる。このとき、第2内部主流F4は、左側吐出口92から導水部88の後側内壁面88aを通るまでの間、平面視にて第1内部主流F3と交差する領域A1を通る。この第1内部主流F3と第2内部主流F4との衝突を避けるため、これらは領域A1にて高さ方向にずれた位置を通る(図5も参照)。   The second internal main flow F4 flows from the left discharge port 92 toward the rear inner wall surface 88a of the water guide section 88, collides with the rear inner wall surface 88a, and is sent to the outer side in the left-right direction of the water guide section 88 (left side in FIG. 6). It is. At this time, the second internal main flow F4 passes through the region A1 intersecting with the first internal main flow F3 in plan view until it passes from the left outlet 92 to the rear inner wall surface 88a of the water guide section 88. In order to avoid a collision between the first internal main flow F3 and the second internal main flow F4, they pass through positions shifted in the height direction in the region A1 (see also FIG. 5).

図7は通水部76内での各内部主流F3、F4の流れ方を示す他の図である。
第2内部主流F4が流れ続けると、導水部88内の洗浄水が吐水孔50に近づく方向(図7中右側)に向けて押し出されるように導かれる。また、導水部88内の洗浄水は導水部88の下壁面82の勾配により吐水孔50に近づく側に導かれる。これらが相まって、吐水孔50には左右方向の一方である左側に向かう速度ベクトルをもつ第2内部主流F4が供給される。
FIG. 7 is another view showing how the internal main flows F3 and F4 flow in the water flow section 76.
When the second internal main flow F4 continues to flow, the cleaning water in the water guide section 88 is guided so as to be pushed out in a direction approaching the water discharge hole 50 (right side in FIG. 7). Further, the cleaning water in the water guide section 88 is guided to the side approaching the water discharge hole 50 by the gradient of the lower wall surface 82 of the water guide section 88. Together, these are provided with a second internal main flow F4 having a velocity vector toward the left side which is one of the left and right directions.

この吐水孔50には右側吐出口90から左右方向の他方である右側に向かう速度ベクトルをもつ第1内部主流F3が供給される。吐水孔50内や直近の通水部76内を含む領域A2では、左右方向の速度ベクトルが異なる第1内部主流F3、第2内部主流F4が合流する。合流した水流が吐水孔50から便鉢14内に吐き出されることにより、第2吐水流Fbが形成される。以下、この状態を第2状態という。   The water discharge hole 50 is supplied with a first internal main flow F3 having a velocity vector directed from the right discharge port 90 toward the right side which is the other in the left-right direction. In the area A2 including the inside of the water discharge hole 50 and the inside of the nearest water flow section 76, the first internal main flow F3 and the second internal main flow F4 having different velocity vectors in the left-right direction merge. The merged water flow is discharged into the toilet bowl 14 from the water discharge hole 50, whereby a second water discharge flow Fb is formed. Hereinafter, this state is referred to as a second state.

第2状態にあるとき、第2内部主流F4は、導水部88と衝突していることから、第1内部主流F3より水勢が弱くなっている。よって、第2内部主流F4の流れ方向は、第1内部主流F3との合流により、第1内部主流F3の流れ方向に近づくように大きく変換され、第2内部主流F4の多くは吐水孔50から溜水部18に向けて流れるようになる。この結果、第2吐水流Fbは、第1吐水流Faよりも溜水部18に向かう流量が多くなり、第2吐水流Fbにより形成される第1主流F1より第2主流F2の流量が多くなる。このとき、第1主流F1の形成には第1内部主流F3が主に寄与し、第2主流F2の形成には第2内部主流F4が主に寄与する。   When in the second state, since the second internal main flow F4 collides with the water guide section 88, the water force is weaker than the first internal main flow F3. Therefore, the flow direction of the second internal main flow F4 is largely changed so as to approach the flow direction of the first internal main flow F3 by merging with the first internal main flow F3, and most of the second internal main flow F4 passes through the water discharge holes 50. It flows toward the water reservoir 18. As a result, the second discharged water flow Fb has a higher flow rate toward the water reservoir 18 than the first discharged water flow Fa, and the second main flow F2 has a higher flow rate than the first main flow F1 formed by the second discharged water flow Fb. Become. At this time, the first internal main flow F3 mainly contributes to the formation of the first main flow F1, and the second internal main flow F4 mainly contributes to the formation of the second main flow F2.

図8は便鉢14内での各主流F1、F2の流れ方を示す平面断面図である。本図では溜水部18に第2主流F2が流入し始める初期段階を示す。
第1主流F1は、吐水孔50から鉢面部16の右側領域16a、前側領域16b、左側領域16cを順に経由して後側領域16dに至るように、平面視にて鉢面部16内で反時計方向に旋回する。本図では第1主流F1が鉢面部16の前側領域16bまで到達した状態を示す。第1主流F1は、鉢面部16の受け面部22の上縁部や立面部24に沿って流れる。
FIG. 8 is a plan sectional view showing how the mainstreams F1 and F2 flow in the toilet bowl. This figure shows an initial stage in which the second main flow F2 starts to flow into the water reservoir 18.
The first main flow F1 is counterclockwise in the bowl surface portion 16 in a plan view so as to reach the rear region 16d from the water discharge hole 50 through the right side region 16a, the front side region 16b, and the left side region 16c in this order. Turn in the direction. In this figure, the state which the 1st mainstream F1 reached | attained to the front side area | region 16b of the bowl surface part 16 is shown. The first main flow F <b> 1 flows along the upper edge portion and the elevation surface portion 24 of the receiving surface portion 22 of the bowl surface portion 16.

第2主流F2は、吐水孔50から溜水部18に向けて流れる。第2主流F2は、鉢面部16内から溜水部18内に落ち込むように流入する。第2主流F2は、溜水部18の内周面の横側領域に沿って流入する。ここでいう「溜水部18の内周面に沿って流入する」とは、第2主流F2が溜水部18内に流入した直後において、流れ方向横側に位置する溜水部18の内周面18aを通る接線に沿うように流入することをいう。   The second main flow F <b> 2 flows from the water discharge hole 50 toward the water reservoir 18. The second main flow F <b> 2 flows so as to fall from the pot surface portion 16 into the water reservoir 18. The second main flow F <b> 2 flows along the lateral region of the inner peripheral surface of the water reservoir 18. Here, “inflow along the inner peripheral surface of the reservoir 18” means that the interior of the reservoir 18 positioned on the lateral side in the flow direction immediately after the second main flow F2 flows into the reservoir 18. It means flowing in along a tangent line passing through the peripheral surface 18a.

図9は便鉢14内での各主流F1、F2の流れ方を示す側面断面図である。
溜水部18に流入した第2主流F2は、溜水部18の右前壁部34と当たることで溜水部18の左前壁部36に向けて流れ方向を変えつつ流れた後に左前壁部36と衝突する。左前壁部36と衝突する主流F2は、溜水部18の底部26と左前壁部36を接続する湾曲する角部27により押し上げられるように上昇する。また、左前壁部36と衝突する主流F2は、溜水部18の左前壁部36と当たることで溜水部18の後側領域に向けて流れ方向が変換される。これらにより、左前壁部36と衝突する主流F2は、溜水部18内で上昇しつつ、水流の流れ方向が排水路30の入口32に向けて変換され、排水路30の入口32に上から下に向かう誘導流F2bが第2主流F2の一部として形成される。
FIG. 9 is a side sectional view showing how the mainstreams F1 and F2 flow in the toilet bowl.
The second main flow F <b> 2 that has flowed into the water reservoir 18 hits the right front wall 34 of the water reservoir 18 and flows toward the left front wall 36 of the water reservoir 18 while changing the flow direction. Collides with the wall 36. The main flow F <b> 2 that collides with the left front wall portion 36 rises so as to be pushed up by a curved corner portion 27 that connects the bottom portion 26 of the reservoir 18 and the left front wall portion 36. In addition, the main flow F <b> 2 that collides with the left front wall portion 36 is contacted with the left front wall portion 36 of the water reservoir 18, so that the flow direction is changed toward the rear region of the water reservoir 18. As a result, the main flow F2 colliding with the left front wall portion 36 rises in the water reservoir 18 and the flow direction of the water flow is changed toward the inlet 32 of the drainage channel 30, and the A downward induced flow F2b is formed as a part of the second main flow F2.

図10は便鉢14内での各主流F1、F2の流れ方を示す他の平面断面図である。本図では初期段階より時間が経過した後の途中段階を示す。
第1主流F1は、鉢面部16内での旋回途中に前側領域16bにて第1分流F1aと第2分流F1bを形成する。第1分流F1aは、鉢面部16の左側領域16cを経由して後側領域16dまで流れるように更に旋回してから、鉢面部16内で第2主流F2と合流する(範囲A4参照)。第1分流F1aは、第2主流F2と合流するとき、第2主流F2と同様に溜水部18内に向かう速度ベクトルをもち、鉢面部16内の第2主流F2の水勢を増幅させる。第2主流F2は、水勢を増幅させた状態で溜水部18内に流入し、初期状態より水勢の強い誘導流F2bを形成する。第2分流F1bは鉢面部16の左寄りの前側領域16bから溜水部18内の排水路30の入口32に向けて流入し、溜水部18内の第2主流F2である誘導流F2bと合流する(範囲A5参照)。第2分流F1bは、誘導流F2bと同様に排水路30の入口32に向かう速度ベクトルをもち、溜水部18内の誘導流F2bの水勢を増幅させる。
FIG. 10 is another plan sectional view showing how the mainstreams F1 and F2 flow in the toilet bowl. This figure shows the intermediate stage after time has elapsed from the initial stage.
The first main flow F1 forms a first diversion F1a and a second diversion F1b in the front region 16b during the turning in the bowl surface portion 16. The first diversion F1a further swirls so as to flow to the rear region 16d via the left region 16c of the bowl surface portion 16, and then merges with the second main flow F2 in the bowl surface portion 16 (see range A4). When the first diversion F1a merges with the second main flow F2, the first diversion F1a has a velocity vector that goes into the water reservoir 18 like the second main flow F2, and amplifies the water force of the second main flow F2 in the pot surface portion 16. The second main flow F2 flows into the water reservoir 18 in a state where the water flow is amplified, and forms an induced flow F2b having a stronger water flow than the initial state. The second diversion F1b flows from the front side region 16b on the left side of the pot surface portion 16 toward the inlet 32 of the drainage channel 30 in the reservoir 18 and joins with the induced flow F2b which is the second main flow F2 in the reservoir 18. (Refer to range A5). Similar to the induced flow F2b, the second diversion F1b has a velocity vector toward the inlet 32 of the drainage channel 30, and amplifies the water flow of the induced flow F2b in the water reservoir 18.

ここで、初期段階(図8の段階)にあるとき、溜水部18内の汚物は誘導流F2bにより排水路30内に勢いよく押し流され、排水路30を通して外部の排水管に排出される。初期状態にあるとき、通水部76内での水流の状態は、第1状態(図6の状態)となってから第2状態(図7の状態)に変わる。よって、初期状態にあるとき、まずは第1状態となることで第1主流F1及び第2主流F2全体の流量は比較的に少なくなり、この後に第2状態となることで第1主流F1及び第2主流F2全体の流量は第1状態より多くなる。また、初期状態にあるとき、まずは第1状態になることで第1主流F1の方が第2主流F2より流量が多くなり、この後に第2状態となることで第2主流F2の方が第1主流F1より流量が多くなる。   Here, when in the initial stage (the stage of FIG. 8), the filth in the water reservoir 18 is forced into the drainage channel 30 by the induced flow F2b and is discharged to the external drainage pipe through the drainage channel 30. When in the initial state, the state of the water flow in the water flow section 76 changes from the first state (the state of FIG. 6) to the second state (the state of FIG. 7). Therefore, when in the initial state, the flow rate of the first main flow F1 and the second main flow F2 as a whole is relatively reduced by first entering the first state, and then the first main flow F1 and the first flow by entering the second state thereafter. The flow rate of the entire two main flows F2 is greater than that in the first state. Further, when in the initial state, the first main flow F1 first has a higher flow rate than the second main flow F2 by entering the first state, and then the second main flow F2 has the second state by entering the second state. The flow rate is higher than 1 main flow F1.

この後、便鉢14内での水流の状態は途中段階(図10の段階)に変わる。途中段階にあるときも初期段階にあるときと同様に汚物は誘導流F2bにより排水路30内に押し流されるが、途中段階にあるときは誘導流F2bの水勢が初期段階より大きく増幅され、初期段階より勢いよく押し流される。   Thereafter, the state of the water flow in the toilet bowl 14 changes to an intermediate stage (stage shown in FIG. 10). In the middle stage, as in the initial stage, the filth is pushed into the drainage channel 30 by the induced flow F2b. However, when the middle stage is in the middle stage, the water flow of the induced flow F2b is greatly amplified from the initial stage. It is swept away more vigorously.

以上の通り、本実施形態に係る水洗大便器10では、吐水孔50から溜水部18に向けて吐き出される洗浄水により第2主流F2が形成されるため、溜水部18以外に向けて洗浄水が吐き出されるよりも、強い水勢の第2主流F2が溜水部18内に流入できる。また、第1主流F1と第2主流F2との合流するにより第2主流F2の水勢を増幅させるため、更に水勢の強い第2主流が流入でき、溜水部18内の汚物を排水路30に排出させ易くなる。よって、鉢面部16を旋回する第1主流F1により鉢面部16内を洗浄しつつ、汚物の排出能力を高められる。このとき、溜水に浮遊する浮遊性汚物を特に効果的に排出できる。   As described above, in the flush toilet 10 according to the present embodiment, since the second main flow F2 is formed by the wash water discharged from the water discharge hole 50 toward the water reservoir 18, the water is washed toward other than the water reservoir 18. The second main flow F <b> 2 having a stronger water flow can flow into the water reservoir 18 than the water is discharged. Further, since the water flow of the second main flow F2 is amplified by the merge of the first main flow F1 and the second main flow F2, the second main flow having a stronger water flow can flow in, and the filth in the water reservoir 18 can flow into the drainage channel 30. It becomes easy to discharge. Therefore, the waste discharging ability can be enhanced while cleaning the inside of the bowl surface portion 16 by the first main flow F1 turning around the bowl surface portion 16. At this time, the floating filth floating in the stored water can be discharged particularly effectively.

また、吐水孔50から溜水部18に向けて吐き出される洗浄水により第2主流F2が形成されるため、溜水部18内に早期に第2主流F2が流入できる。この結果、トラップ部38内に貯められた洗浄水を排出口44に早期に送り出せ(図1参照)、排水路30内で洗浄水を絞り部48と衝突等させて早期に水膜を形成でき、早期にサイホン作用を発生させられる。   Moreover, since the 2nd main flow F2 is formed with the wash water discharged toward the stored water part 18 from the water discharge hole 50, the 2nd main flow F2 can flow in into the stored water part 18 at an early stage. As a result, the cleaning water stored in the trap portion 38 can be sent to the discharge port 44 at an early stage (see FIG. 1), and the cleaning water can collide with the throttle portion 48 in the drainage channel 30 to form a water film at an early stage. The siphon action is generated early.

また、溜水部18は、第2主流によって、排水路30に向かう誘導流F2bを形成するように構成される。よって、溜水部18内に流入した強い水勢の第2主流F2により、強い水勢の誘導流F2bを形成でき、その誘導流F2bにより溜水部18内の汚物を排水路30に勢いよく押し流せるようになり、汚物の排出能力を更に高められる。   Further, the water reservoir 18 is configured to form an induced flow F2b toward the drainage channel 30 by the second main flow. Therefore, the strong water-induced second flow F2b that has flowed into the water reservoir 18 can form a strong water-induced flow F2b, and the sewage in the water reservoir 18 can be swept away into the drainage channel 30 by the induced flow F2b. As a result, the waste discharge capacity can be further enhanced.

また、第2主流F2は溜水部18の内周面に沿って流入するため、溜水部18の内周面に沿ってスムーズに方向変換し易くなる。かりに、第2主流F2が溜水部18の内周面と大きく交差する方向に流入すると、第2主流F2の流入方向前方に位置する壁面との衝突時の勢いにより鉢面部16内に第2主流F2が乗り上げる恐れがある。この点、本実施形態によれば、第2主流F2の流入方向前方に位置する壁面に第2主流F2が衝突するときの勢いを水平方向に逃がし易くなり、鉢面部16内への第2主流F2の乗り上げを防止できる。また、第2主流F2の多くを誘導流F2bの形成に利用でき、少ない流量でも水勢の強い誘導流F2bを形成できる。   Further, since the second main flow F <b> 2 flows along the inner peripheral surface of the water reservoir 18, the direction can be easily changed smoothly along the inner peripheral surface of the water reservoir 18. If the second main flow F2 flows in a direction that largely intersects with the inner peripheral surface of the water reservoir 18, the second main flow F2 enters the pot surface 16 due to the momentum of collision with the wall surface located in front of the second main flow F2 in the inflow direction. The mainstream F2 may ride up. In this regard, according to the present embodiment, the moment when the second main flow F2 collides with the wall surface located in front of the inflow direction of the second main flow F2 can be easily released in the horizontal direction, and the second main flow into the bowl surface portion 16 is achieved. F2 can be prevented from climbing. Further, most of the second main flow F2 can be used for forming the induced flow F2b, and the induced flow F2b having a strong water flow can be formed even with a small flow rate.

また、第1主流F1が形成する第1分流F1aは鉢面部16内を更に旋回してから第2主流F2と合流して水勢を増幅させ、第1主流F1が形成する第2分流F1bは溜水部18内で第2主流F2である誘導流F2bと合流して水勢を増幅させる。よって、鉢面部16内の広い範囲を第1主流F1により洗浄しつつ、多くの第1主流F1を無駄にせずに第2主流F2の水勢を大きく増幅できる。   Further, the first diversion F1a formed by the first main flow F1 further swirls in the bowl surface portion 16, and then merges with the second main flow F2 to amplify the water force, and the second diversion F1b formed by the first main flow F1 is accumulated. In the water part 18, it joins with the induced flow F2b which is the 2nd mainstream F2, and amplifies a water force. Therefore, it is possible to greatly amplify the water flow of the second main flow F2 without wasting a lot of the first main flow F1, while washing a wide range in the bowl surface portion 16 with the first main flow F1.

また、第1主流F1、第2主流F2が単一の吐水孔50から吐き出される。よって、洗浄水を吐き出して第1主流F1、第2主流F2を形成するうえで、別々の吐水孔50を鉢面部16に設けずともよくなり、鉢面部16への加工作業が減るうえ、清掃時の作業性が良好になる。また、吐水孔50を複数ではなく単一にした場合でも、鉢面部16内を旋回する第1主流F1や、溜水部18内に誘導流F2bを形成する第2主流F2を形成でき、便鉢14の洗浄力の低下を防止できる利点もある。   Further, the first main flow F <b> 1 and the second main flow F <b> 2 are discharged from the single water discharge hole 50. Therefore, in discharging the washing water to form the first main flow F1 and the second main flow F2, it is not necessary to provide the separate water discharge holes 50 in the bowl surface portion 16, and the processing work on the bowl surface portion 16 is reduced and cleaning is performed. Workability at the time becomes better. Moreover, even when the water discharge holes 50 are made into a single rather than a plurality, the first main flow F1 swirling in the bowl surface portion 16 and the second main flow F2 forming the induced flow F2b in the water storage portion 18 can be formed. There also exists an advantage which can prevent the fall of the cleaning power of the bowl 14.

また、通水部76内には別々の第1内部主流F3、第2内部主流F4が形成され、各内部主流F3、F4により第1主流F1、第2主流F2が形成される。よって、単一の吐水孔50から洗浄水を吐き出して第1主流F1、第2主流F2を形成する場合でも、各内部主流F3、F4が吐水孔50に供給されるときの水勢、流れ方向、流量等の調整により、第1主流F1、第2主流F2の水勢、流れ方向、流量等を様々に調整できる。各内部主流F3、F4の水勢等の因子と各主流F1、F2の水勢等の因子との相関関係は、予め実験、解析等により求めておけばよい。これにより、この相関関係に基づいて、各主流F1、F2の水勢等について所望の条件を満たすように、各内部主流F3、F4の水勢等を調整できる。   Further, separate first internal main flow F3 and second internal main flow F4 are formed in the water flow section 76, and the first main flow F1 and the second main flow F2 are formed by the internal main flows F3 and F4. Therefore, even when the cleaning water is discharged from the single water discharge hole 50 to form the first main flow F1 and the second main flow F2, the water flow when the internal main flows F3 and F4 are supplied to the water discharge hole 50, the flow direction, By adjusting the flow rate and the like, the water flow, flow direction, flow rate, and the like of the first main flow F1 and the second main flow F2 can be variously adjusted. The correlation between the factors such as the water flow in each of the internal mainstreams F3 and F4 and the factors such as the water flow in each of the mainstreams F1 and F2 may be obtained in advance through experiments, analysis, and the like. Thereby, based on this correlation, the water flow etc. of each internal main flow F3, F4 can be adjusted so that desired conditions may be satisfied about the water flow etc. of each main flow F1, F2.

また、図6に示す第1状態では第2主流F2より第1主流F1の流量が多く、第2状態では第1主流F1より第2主流F2の流量が多くなる。よって、第1状態では、吐水孔50から吐き出される洗浄水の多くを第1主流F1に用い、鉢面部16内の汚物を溜水部18内に洗い落とし易くなる。また、鉢面部16内の広い範囲の汚物を第1主流F1により洗い落とした後は、多くの洗浄水を第1主流F1に用いても、汚物の排出能力が向上し難く洗浄水が無駄になり易い。この点、第2状態では、汚物の排出能力の向上に寄与し難い第1主流F1の流量を減らしたうえで、排出能力の向上に寄与する第2主流F2の流量を多くでき、洗浄水の無駄を抑えつつ汚物の排出能力を高められる。   Further, in the first state shown in FIG. 6, the flow rate of the first main flow F1 is higher than that of the second main flow F2, and in the second state, the flow rate of the second main flow F2 is higher than that of the first main flow F1. Therefore, in the first state, most of the washing water discharged from the water discharge hole 50 is used for the first main flow F1, and the filth in the bowl surface portion 16 is easily washed out in the water storage portion 18. Further, after washing a wide range of filth in the bowl surface portion 16 with the first mainstream F1, even if a large amount of washing water is used in the first mainstream F1, the discharge capacity of the filth is difficult to improve and the washing water is wasted. easy. In this regard, in the second state, the flow rate of the second main flow F2 that contributes to the improvement of the discharge capacity can be increased after the flow rate of the first main flow F1 that is difficult to contribute to the improvement of the discharge capacity of the filth is reduced. The waste discharge capacity can be increased while reducing waste.

また、別々の第1内部主流F3、第2内部主流F4を単一の吐水孔50に供給するうえでは、吐水孔50を通る前後で各内部主流F3、F4が合流し易くなる。各内部主流F3、F4が合流するとき、その衝突により飛沫が生じ易くなり、便鉢14内から外側に飛沫が飛散する恐れがある。この点、本実施形態によれば、第2内部主流F4は導水部88に衝突して水勢を弱めてから吐水孔50に導かれるため、第1内部主流F3と合流するときに生じる飛沫を低減でき、便鉢14内から外側への飛沫の飛散を防止できる。   Moreover, when supplying separate 1st internal main flow F3 and 2nd internal main flow F4 to the single water discharge hole 50, each internal main flow F3, F4 becomes easy to merge before and after passing through the water discharge hole 50. FIG. When the internal mainstreams F3 and F4 join, splashes are likely to be generated due to the collision, and there is a possibility that the splashes are scattered from the inside of the toilet bowl 14 to the outside. In this regard, according to the present embodiment, the second internal main flow F4 collides with the water guide portion 88 and weakens the water force, and then is guided to the water discharge hole 50, so that splashes generated when joining the first internal main flow F3 are reduced. It is possible to prevent splashing from the inside of the toilet bowl 14 to the outside.

また、吐水孔50は前壁部78に形成され、導水部88は前壁部78により一部が形成されるため、吐水孔50は導水部88の近傍に設けられることになる。よって、導水部88に衝突した第2内部主流F4は導水部88の近傍にある吐水孔50から早期に吐き出され、通水部76内の他の箇所に流出し難くなる。よって、吐水孔50からは大流量の第2内部主流F4を吐き出し易くなる。この結果、通水部76に供給した多くの洗浄水を無駄にせずに大流量の第2主流F2を便鉢14内に形成でき、便鉢14内の洗浄力を高められる。   Moreover, since the water discharge hole 50 is formed in the front wall part 78 and the water conveyance part 88 is partially formed by the front wall part 78, the water discharge hole 50 is provided in the vicinity of the water conveyance part 88. Therefore, the second internal main flow F <b> 4 that has collided with the water guide part 88 is discharged from the water discharge hole 50 in the vicinity of the water guide part 88 at an early stage, and does not easily flow out to other locations in the water flow part 76. Therefore, it becomes easy to discharge the second internal main flow F4 having a large flow rate from the water discharge hole 50. As a result, the second main flow F2 having a large flow rate can be formed in the toilet bowl 14 without wasting a large amount of washing water supplied to the water flow section 76, and the cleaning power in the toilet bowl 14 can be enhanced.

また、第1内部主流F3及び第2内部主流F4が通水部76内で合流した後に吐水孔50から吐き出されるため、各内部主流F3、F4を便鉢14内で合流させるよりも、各内部主流F3、F4が合流したときに生じる飛沫の飛散範囲を制限できる。よって、便鉢14内から外側への飛沫の飛散を防止できる。   In addition, since the first internal main flow F3 and the second internal main flow F4 are discharged from the water discharge hole 50 after joining in the water flow portion 76, each internal main flow F3, F4 is more than combined in the toilet bowl 14 It is possible to limit the splash range of the splash that occurs when the mainstreams F3 and F4 merge. Therefore, it is possible to prevent splashing from the inside of the toilet bowl 14 to the outside.

なお、貯水タンク56の大きさに応じて分配器58に供給される洗浄水に働く水圧(以下、供給水圧という)が変化する。この供給水圧が過度に大きいと、便鉢14内に吐水孔50から吐き出される洗浄水の水勢が過度に強くなり、便鉢14内で飛沫が飛散し易くなる。この対策として、本実施形態に係る分配器58は、以下のように構成される。   Note that the water pressure (hereinafter referred to as supply water pressure) acting on the wash water supplied to the distributor 58 changes in accordance with the size of the water storage tank 56. If the supply water pressure is excessively large, the water flow of the washing water discharged from the water discharge hole 50 into the toilet bowl 14 becomes excessively strong, and the droplets are easily scattered in the toilet bowl 14. As a countermeasure, the distributor 58 according to the present embodiment is configured as follows.

図11は分配器58の内部構造の一部を示す部分断面側面図である
分配器58の流入部60は軸方向に分割した形状の上流側管部60aと下流側管部60bを有する。これらは下流側管部60bの上端部内に上流側管部60aの下端部が圧入等することにより脱着可能に接続される。上流側管部60aの内部には流入部60の通水方向での流路断面を狭める絞り孔60cが形成される。貯水タンク56から供給される洗浄水は、絞り孔60cを通ることで供給水圧より減圧されてから、分配器58の各吐出部70、72に供給される。よって、供給水圧が大きい場合でも、吐水孔50から吐き出される洗浄水の水勢を弱め、便鉢14内での飛沫の飛散を抑えられる。
FIG. 11 is a partial sectional side view showing a part of the internal structure of the distributor 58. The inflow section 60 of the distributor 58 has an upstream pipe section 60a and a downstream pipe section 60b that are divided in the axial direction. These are detachably connected when the lower end of the upstream pipe 60a is press-fitted into the upper end of the downstream pipe 60b. A throttle hole 60c is formed in the upstream pipe portion 60a to narrow the cross section of the flow path in the water flow direction of the inflow portion 60. The wash water supplied from the water storage tank 56 is reduced in pressure from the supply water pressure by passing through the throttle hole 60 c, and then supplied to the discharge units 70 and 72 of the distributor 58. Therefore, even when the supply water pressure is high, the water flow of the wash water discharged from the water discharge hole 50 is weakened, and splashing of the splash in the toilet bowl 14 can be suppressed.

なお、複数種の上流側管部60aとして、絞り孔60cが大きいもの、小さいもの、絞り孔60cがないもの等を予め準備しておいてもよい。下流側管部60bに接続される上流側管部60aを替えれば、各吐出部70、72に供給される洗浄水の水圧を段階的に調整可能となる。   Note that a plurality of types of upstream-side pipe portions 60a may be prepared in advance, such as one having a large throttle hole 60c, one having a small throttle hole, or one having no throttle hole 60c. If the upstream side pipe part 60a connected to the downstream side pipe part 60b is changed, the water pressure of the cleaning water supplied to the discharge parts 70 and 72 can be adjusted stepwise.

[第2の実施の形態]
図12は通水部76の吐水孔50周りを示す側面断面図であり、図12(a)は第1実施形態、図12(b)は第2実施形態のものを示す。
第1実施形態に係る通水部76は、図12(a)に示すように、前壁部78と上壁部94が角部96を介して接続され、前壁部78が角部96からほぼ鉛直に延在する。この場合、吐水孔50に向けて供給される第1内部主流F3の一部が前壁部78の内壁面に当たることで、吐水孔50の直前の領域A6で水流が大きく乱れ易くなり、吐水孔50から飛沫が飛散し易くなる恐れがある。
[Second Embodiment]
FIG. 12 is a side cross-sectional view showing the periphery of the water discharge hole 50 of the water flow section 76, FIG. 12 (a) shows the first embodiment, and FIG. 12 (b) shows the second embodiment.
As shown in FIG. 12A, the water flow portion 76 according to the first embodiment has a front wall portion 78 and an upper wall portion 94 connected via a corner portion 96, and the front wall portion 78 extends from the corner portion 96. It extends almost vertically. In this case, when a part of the first internal main flow F3 supplied toward the water discharge hole 50 hits the inner wall surface of the front wall portion 78, the water flow is likely to be greatly disturbed in the region A6 immediately before the water discharge hole 50, and the water discharge hole There is a risk that the splashes from 50 will be easily scattered.

この対策として、第2実施形態に係る通水部76の内壁面には、図12(b)に示すように、吐水孔50に向かうにつれて通水部76の高さ寸法を狭めるように傾斜する誘導面98が形成される。誘導面98は、通水部76内にて凹状に湾曲して形成される。誘導面98は通水部76の上壁面に形成される。   As a countermeasure, the inner wall surface of the water flow portion 76 according to the second embodiment is inclined so as to narrow the height dimension of the water flow portion 76 toward the water discharge hole 50 as shown in FIG. A guide surface 98 is formed. The guide surface 98 is formed to be curved concavely in the water flow portion 76. The guide surface 98 is formed on the upper wall surface of the water flow portion 76.

以上の水洗大便器10によれば、吐水孔50に向けて供給される第1内部主流F3の一部が誘導面98に当たると、その水流は誘導面98に沿って吐水孔50に誘導されることで整流される。この結果、吐水孔50の直前での水流の乱れを抑えられ、吐水孔50からの飛沫の飛散を抑えられる。   According to the flush toilet 10 described above, when a part of the first internal main flow F3 supplied toward the water discharge hole 50 hits the guide surface 98, the water flow is guided to the water discharge hole 50 along the guide surface 98. It is rectified. As a result, the disturbance of the water flow immediately before the water discharge hole 50 can be suppressed, and the splash of the splash from the water discharge hole 50 can be suppressed.

[第3の実施の形態]
図13は第3実施形態に係る水洗大便器10を示す平面図である。
第1実施形態では分配器58を用いて通水部76内に洗浄水を吐き出して第1内部主流F3、第2内部主流F4を形成し、各内部主流F3、F4を吐水孔50から吐き出して第1主流F1、第2主流F2を形成する例を説明した。本実施形態では、通水部76に貯水タンク56から吐水孔50に至る通水路100が形成される。貯水タンク56から通水路100に洗浄水が供給されると、通水路100内を通して吐水孔50に洗浄水が供給される。吐水孔50からは洗浄水が吐き出され、左右方向に横長な吐水流Fcが形成される。
[Third Embodiment]
FIG. 13 is a plan view showing a flush toilet 10 according to the third embodiment.
In the first embodiment, the distributor 58 is used to discharge the wash water into the water flow section 76 to form the first internal main flow F3 and the second internal main flow F4, and the internal main flows F3 and F4 are discharged from the water discharge holes 50. The example which forms the 1st mainstream F1 and the 2nd mainstream F2 was demonstrated. In the present embodiment, a water passage 100 extending from the water storage tank 56 to the water discharge hole 50 is formed in the water passage portion 76. When the cleaning water is supplied from the water storage tank 56 to the water passage 100, the cleaning water is supplied to the water discharge hole 50 through the water passage 100. Wash water is discharged from the water discharge holes 50, and a water discharge flow Fc that is horizontally long in the left-right direction is formed.

吐水流Fcは溜水部18の上方を一部が通るとともに、鉢面部16上を残部が通るように吐き出される。吐水流Fcの一部は溜水部18の上方を通るときに分流されて第1主流F1を形成し、残部が第2主流F2を形成する。第1主流F1、第2主流F2は第1実施形態と同様に、初期段階では溜水部18に第2主流F2が流入し、途中段階では第1主流F1が第2主流F2と合流して第2主流F2の水勢を増幅させる。本実施形態のように、吐水孔50から吐き出される洗浄水により第1主流F1、第2主流F2を形成するうえでは、分配器58を用いなくともよい。   The discharged water flow Fc is discharged so that a part passes above the water reservoir 18 and the remaining part passes over the pot surface 16. A part of the water discharge flow Fc is diverted when passing over the reservoir 18 to form the first main flow F1, and the remaining portion forms the second main flow F2. As in the first embodiment, the first main flow F1 and the second main flow F2 are the first main flow F1 and the second main flow F2 that merge with the reservoir 18 in the initial stage and the second main flow F2 in the middle stage. The water flow of the second mainstream F2 is amplified. When the first main flow F1 and the second main flow F2 are formed by the wash water discharged from the water discharge holes 50 as in the present embodiment, the distributor 58 may not be used.

以上、実施の形態に基づき本発明を説明したが、実施の形態は、本発明の原理、応用を示すにすぎない。また、実施の形態には、請求の範囲に規定された本発明の思想を逸脱しない範囲において、多くの変形例や配置の変更が可能である。   As mentioned above, although this invention was demonstrated based on embodiment, embodiment only shows the principle and application of this invention. In the embodiment, many modifications and arrangements can be made without departing from the spirit of the present invention defined in the claims.

各実施形態では、第1主流F1、第2主流F2を形成するため、単一の吐水孔50から吐き出される洗浄水を用いる例を説明した。これらを一般化すると、水洗大便器10は、鉢面部16内に洗浄水を吐き出して第1主流F1を形成する第1吐水部102(図2参照)と、溜水部18に向けて洗浄水を吐き出して第2主流F2を形成する第2吐水部104とを備え、第1吐水部102及び第2吐水部104が単一の吐水孔50により構成される例を説明したことになる。この他にも、第1吐水部102と第2吐水部104とが鉢面部16に形成される別々の吐水孔により構成されてもよい。   In each embodiment, the example using the wash water discharged from the single water discharge hole 50 in order to form the 1st main flow F1 and the 2nd main flow F2 was demonstrated. When these are generalized, the flush toilet 10 is configured to wash water toward the first water discharge portion 102 (see FIG. 2) that discharges the wash water into the bowl surface portion 16 to form the first main flow F1 and the water storage portion 18. And the second water discharge part 104 that forms the second main flow F <b> 2, and the first water discharge part 102 and the second water discharge part 104 are configured by a single water discharge hole 50. In addition, the 1st water discharging part 102 and the 2nd water discharging part 104 may be comprised by the separate water discharging hole formed in the bowl surface part 16. FIG.

また、各実施形態に係る水洗大便器10では、溜水部18に第2主流F2が流入し始める初期段階と、第1主流F1及び第2主流F2が合流した後の途中段階との何れにおいても、溜水部18に水勢の異なる誘導流F2bのみが生じる場合を説明した。この他にも、初期段階においては、溜水部18内に旋回流を主に生じさせ、汚物を旋回流の中心側に集めるようにし、途中段階においては、溜水部18内に誘導流F2bを主に生じさせ、旋回流の中心側に集められた汚物を誘導流F2bにより排水路30内に勢いよく押し流すようにしてもよい。この場合でも、吐水孔50から溜水部18に向けて吐き出される洗浄水により第2主流F2が形成されるため、途中段階において、強い水勢の第2主流F2が溜水部18内に流入でき、溜水部18内の汚物を排水路30に排出させ易くなる。よって、鉢面部16内を旋回する第1主流F1により鉢面部16内を洗浄しつつ、汚物の排出能力を高められる。   Moreover, in the flush toilet 10 which concerns on each embodiment, in any of the initial stage in which the 2nd mainstream F2 begins to flow in into the water storage part 18, and the intermediate stage after the 1st mainstream F1 and the 2nd mainstream F2 merge. Also, the case where only the induced flow F2b having different water flows is generated in the water reservoir 18 has been described. In addition to this, in the initial stage, a swirling flow is mainly generated in the water reservoir 18 to collect filth on the center side of the swirling flow, and in the middle stage, the induced flow F2b in the water reservoir 18 is collected. The waste collected at the center of the swirling flow may be swept away into the drainage channel 30 by the induced flow F2b. Even in this case, since the second main flow F2 is formed by the wash water discharged from the water discharge hole 50 toward the water reservoir 18, the second main flow F2 having a strong water flow can flow into the water reservoir 18 in the middle stage. It becomes easy to discharge the filth in the water reservoir 18 to the drainage channel 30. Therefore, the discharge | emission capability of filth can be improved, washing | cleaning the inside of the bowl surface part 16 with the 1st mainstream F1 swirling in the bowl surface part 16. FIG.

溜水部18は、鉢面部16内から流入する第2主流F2によって誘導流F2bを形成するように構成されていればよく、図示の構造には限られない。   The reservoir 18 may be configured to form the induced flow F2b by the second main flow F2 flowing from the bowl surface portion 16, and is not limited to the illustrated structure.

各実施形態では、第1主流F1が第1分流F1aと第2分流F1bを形成し、第1分流F1aが鉢面部16内で第2主流F2と合流し、第2分流F1bが溜水部18内の第2主流である誘導流F2bと合流し、これらにより、誘導流F2bの水勢を増幅させる例を説明した。本発明に係る水洗大便器10では、第2主流F2により溜水部18内で誘導流F2bが生じた後、第1主流F1が第2主流と合流して誘導流F2bの水勢を増幅させればよく、第1分流F1a、第2分流F1bを形成しなくともよい。たとえば、第1主流F1が第1分流F1aを形成せずに、図9で第2分流F1bが通る部分のみを第1主流F1が通るように洗浄水の吐出量を調整してもよい。   In each embodiment, the first main flow F1 forms a first diversion F1a and a second diversion F1b, the first diversion F1a merges with the second main flow F2 in the bowl surface portion 16, and the second diversion F1b is a reservoir 18. The example in which the water flow of the induced flow F2b is amplified by the merged with the induced flow F2b which is the second main flow in the above has been described. In the flush toilet 10 according to the present invention, after the induced flow F2b is generated in the reservoir 18 due to the second main flow F2, the first main flow F1 joins the second main flow to amplify the water flow of the induced flow F2b. The first branch flow F1a and the second branch flow F1b may not be formed. For example, the discharge amount of the cleaning water may be adjusted so that the first main flow F1 passes only through the portion where the second branch flow F1b passes in FIG. 9 without the first main flow F1 forming the first branch flow F1a.

各実施形態では、第2内部主流F4が導水部88の後側内壁面88aに衝突したが、その衝突位置は通水部76の内壁面であれば特に限られない。また、第2内部主流F4のみでなく、第1内部主流F3が通水部76の内壁面に衝突してもよいし、第1内部主流F3及び第2内部主流F4の両方が衝突してもよい。また、導水部88は、第1内部主流F3、第2内部主流F4の何れか一方が衝突し、その衝突した内部水流を吐水孔50に導ければよく、図示の構造には限られない。   In each embodiment, the second internal main flow F4 collides with the rear inner wall surface 88a of the water guide section 88, but the collision position is not particularly limited as long as the collision position is the inner wall surface of the water flow section 76. Moreover, not only the 2nd internal main flow F4 but the 1st internal main flow F3 may collide with the inner wall face of the water flow part 76, and even if both the 1st internal main flow F3 and the 2nd internal main flow F4 collide. Good. Further, the water guide section 88 is not limited to the structure shown in the drawing as long as any one of the first internal main flow F3 and the second internal main flow F4 collides and the collided internal water flow is guided to the water discharge hole 50.

また、図5、図6の例では、領域A1にて第1内部主流F3が上側、第2内部主流F4が下側を通ったが、第1内部主流F3が下側、第2内部主流F4が上側を通ってもよい。また、図2では、分配器58が第1吐出部70、第2吐出部72を有し、二股に分岐する例を説明したが、右側分岐部64の下流端部に管体である第3吐出部を接続し、三股に分岐してもよい。また、第1吐出部〜第3吐出部の何れか一つのみを有してもよい。   5 and 6, the first internal main flow F3 passes through the upper side and the second internal main flow F4 passes through the lower side in the region A1, but the first internal main flow F3 is the lower side and the second internal main flow F4. May pass through the upper side. Further, in FIG. 2, the distributor 58 has the first discharge unit 70 and the second discharge unit 72, and the bifurcated branch is described. However, a third pipe that is a tubular body at the downstream end of the right branch unit 64 is described. A discharge unit may be connected and branched into three branches. Moreover, you may have only any one of a 1st discharge part-a 3rd discharge part.

また、鉢面部16の形状は特に限られず、便鉢14の上縁部にて内周側に突き出るひさし部が設けられてもよい。また、洗浄水の供給は、貯水タンク56を用いずに、上水道から直接に供給されてもよいし、フラッシュバルブを通して供給されてもよい。   Moreover, the shape of the bowl surface portion 16 is not particularly limited, and an eaves portion protruding toward the inner peripheral side at the upper edge portion of the toilet bowl 14 may be provided. Further, the cleaning water may be supplied directly from the water supply without using the water storage tank 56 or may be supplied through a flush valve.

F1…第1主流、F1a…第1分流、F1b…第2分流、F2…第2主流、F2b…誘導流、F3…第1内部主流、F4…第2内部主流、10…水洗大便器、14…便鉢、16…鉢面部、18…溜水部、30…排水路、32…入口、50…吐水孔、70…第1吐出部、72…第2吐出部、76…通水部、88…導水部、98…誘導面。 F1 ... first main flow, F1a ... first branch flow, F1b ... second branch flow, F2 ... second main flow, F2b ... inductive flow, F3 ... first internal main flow, F4 ... second internal main flow, 10 ... flush toilet, 14 DESCRIPTION OF SYMBOLS ... Toilet bowl, 16 ... Bowl surface part, 18 ... Reservoir part, 30 ... Drainage channel, 32 ... Inlet, 50 ... Water discharge hole, 70 ... 1st discharge part, 72 ... 2nd discharge part, 76 ... Water flow part, 88 ... water guide, 98 ... guide surface.

Claims (11)

鉢面部と、前記鉢面部の下方に形成される溜水部と、を有する便鉢と、
前記溜水部の底部に形成される入口を通して該溜水部内に連通される排水路と、
前記鉢面部内に洗浄水を吐き出し、該鉢面部内で旋回する第1主流を形成する第1吐水部と、
前記溜水部に向けて洗浄水を吐き出し、前記鉢面部内から該溜水部に流入する第2主流を形成する第2吐水部と、を備え、
前記第1主流が前記第2主流と合流することにより、前記第2主流の水勢を増幅させるように構成されることを特徴とする水洗大便器。
A stool having a bowl surface part, and a reservoir part formed below the bowl surface part,
A drainage channel communicating with the water reservoir through an inlet formed at the bottom of the water reservoir,
A first water discharge part that discharges cleaning water into the bowl surface part and forms a first main flow that swirls in the bowl surface part;
A second water discharger that discharges wash water toward the water reservoir and forms a second main flow that flows into the water reservoir from the bowl surface portion;
The flush toilet is configured to amplify the water flow of the second main flow when the first main flow merges with the second main flow.
前記溜水部は、前記第2主流によって、前記排水路の入口に上から下に向かう誘導流を形成するように構成されることを特徴とする請求項1に記載の水洗大便器。   2. The flush toilet according to claim 1, wherein the water reservoir is configured to form an induced flow from top to bottom at an inlet of the drainage channel by the second main flow. 前記第2主流は、前記溜水部の内周面にって流入することを特徴とする請求項1または2に記載の水洗大便器。   The flush toilet according to claim 1 or 2, wherein the second mainstream flows in along an inner peripheral surface of the water reservoir. 前記第1主流は、前記鉢面部内での旋回途中に第1分流と第2分流を形成し、前記第1分流は、前記鉢面部内を更に旋回してから該鉢面部内で前記第2主流と合流し、前記第2分流は、前記溜水部内の第2主流と合流し、これらにより、前記第2主流の水勢を増幅させることを特徴とする請求項1から3のいずれかに記載の水洗大便器。   The first main flow forms a first divided flow and a second divided flow during the turning in the bowl surface portion, and the first divided flow further swirls in the bowl surface portion and then the second divided flow in the bowl surface portion. 4. The flow according to claim 1, wherein the second main flow merges with the second main flow in the water reservoir, and thereby amplifies the water flow of the second main flow. Flush toilet. 前記第1吐水部と前記第2吐水部は、前記鉢面部に形成される単一の吐水孔であることを特徴とする請求項1から4のいずれかに記載の水洗大便器。   The flush toilet according to any one of claims 1 to 4, wherein the first water discharge portion and the second water discharge portion are a single water discharge hole formed in the bowl surface portion. 前記吐水孔の上流側に設けられる通水部と、
前記通水部内に洗浄水を吐き出し、前記吐水孔に供給される第1内部主流を形成する第1吐出部と、
前記通水部内に洗浄水を吐き出し、前記吐水孔に供給される第2内部主流を形成する第2吐出部と、を備え、
前記吐水孔に供給される前記第1内部主流及び前記第2内部主流により前記第1主流及び前記第2主流が形成されることを特徴とする請求項5に記載の水洗大便器。
A water flow portion provided on the upstream side of the water discharge hole;
A first discharge part that discharges wash water into the water flow part and forms a first internal main flow supplied to the water discharge hole;
A second discharge part that discharges wash water into the water flow part and forms a second internal main flow supplied to the water discharge hole,
The flush toilet according to claim 5, wherein the first main flow and the second main flow are formed by the first internal main flow and the second internal main flow supplied to the water discharge hole.
前記吐水孔に前記第1内部主流が先に供給されることにより、前記第2主流より前記第1主流の流量が多くなるように第1主流及び第2主流が形成され、その後に前記吐水孔に前記第1内部主流及び前記第2内部主流が供給されることにより、前記第1主流より前記第2主流の流量が多くなるように第1主流及び第2主流が形成されることを特徴とする請求項6に記載の水洗大便器。   When the first internal main flow is supplied to the water discharge hole first, the first main flow and the second main flow are formed so that the flow rate of the first main flow is larger than the second main flow, and then the water discharge hole. When the first internal main flow and the second internal main flow are supplied to the first main flow, the first main flow and the second main flow are formed so that the flow rate of the second main flow is larger than the first main flow. The flush toilet according to claim 6. 前記通水部は、前記第1内部主流又は前記第2内部主流の何れか一方が衝突し、その衝突した内部主流を前記吐水孔に導く導水部を有することを特徴とする請求項6または7に記載の水洗大便器。   The said water flow part has a water guide part which guide | induces either the said 1st internal main flow or the said 2nd internal main flow, and guides the collided internal main flow to the said water discharge hole. A flush toilet according to 1. 前記吐水孔は、前記便鉢内と前記通水部内を隔てる壁部に形成され、
前記導水部は、前記壁部により一部が形成されることを特徴とする請求項8に記載の水洗大便器。
The water discharge hole is formed in a wall part separating the inside of the toilet bowl and the inside of the water passage part,
The flush toilet according to claim 8, wherein a part of the water guide part is formed by the wall part.
前記第1内部主流及び前記第2内部主流は前記通水部内で合流した後に前記吐水孔から吐き出されることを特徴とする請求項6から9のいずれかに記載の水洗大便器。   The flush toilet according to any one of claims 6 to 9, wherein the first internal main flow and the second internal main flow are discharged from the water discharge hole after joining in the water flow portion. 前記通水部の内壁面には、前記吐水孔に向かうにつれて該通水部の高さ寸法を狭めるように傾斜する誘導面が形成されることを特徴とする請求項6から10のいずれかに記載の水洗大便器。   The guide surface which inclines so that the height dimension of this water flow part may be narrowed as it goes to the said water discharge hole may be formed in the inner wall surface of the said water flow part. The flush toilet described.
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WO2018123271A1 (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet
WO2018123272A1 (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet
JP2018204195A (en) * 2017-05-31 2018-12-27 株式会社Lixil Flush toilet bowl
JP2022066578A (en) * 2018-04-27 2022-04-28 株式会社Lixil Flush toilet bowl

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WO2018123271A1 (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet
WO2018123272A1 (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet
JP2018105006A (en) * 2016-12-27 2018-07-05 株式会社Lixil Flush toilet bowl
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JP2018204195A (en) * 2017-05-31 2018-12-27 株式会社Lixil Flush toilet bowl
JP2022066578A (en) * 2018-04-27 2022-04-28 株式会社Lixil Flush toilet bowl
JP7441872B2 (en) 2018-04-27 2024-03-01 株式会社Lixil flush toilet

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