WO2017006903A1 - Dispositif de chasse d'eau de toilettes - Google Patents

Dispositif de chasse d'eau de toilettes Download PDF

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Publication number
WO2017006903A1
WO2017006903A1 PCT/JP2016/069766 JP2016069766W WO2017006903A1 WO 2017006903 A1 WO2017006903 A1 WO 2017006903A1 JP 2016069766 W JP2016069766 W JP 2016069766W WO 2017006903 A1 WO2017006903 A1 WO 2017006903A1
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WO
WIPO (PCT)
Prior art keywords
water
water discharge
rim
toilet bowl
discharge port
Prior art date
Application number
PCT/JP2016/069766
Other languages
English (en)
Japanese (ja)
Inventor
康宏 近藤
謙一 伊藤
光 松原
幸満 稲毛
Original Assignee
株式会社Ｌｉｘｉｌ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015137258A external-priority patent/JP6548487B2/ja
Priority claimed from JP2015137259A external-priority patent/JP2017020213A/ja
Priority claimed from JP2015179523A external-priority patent/JP6495146B2/ja
Application filed by 株式会社Ｌｉｘｉｌ filed Critical 株式会社Ｌｉｘｉｌ
Priority to EP16821372.6A priority Critical patent/EP3321438B1/fr
Priority to CN201680036606.8A priority patent/CN107709676B/zh
Publication of WO2017006903A1 publication Critical patent/WO2017006903A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • E03D11/08—Bowls with means producing a flushing water swirl
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D2201/00—Details and methods of use for water closets and urinals not otherwise provided for
    • E03D2201/40—Devices for distribution of flush water inside the bowl

Definitions

  • the present invention relates to a flush toilet.
  • Patent Document 1 proposes a toilet cleaning device in which three water outlets are provided at the rear of the toilet bowl, and the discharge mode of the wash water discharged from the three water outlets can be changed by a switching valve.
  • the discharge mode of the washing water a discharge mode using only one of the three water discharge ports and a mode using two water discharge ports in combination are disclosed.
  • JP 2006-9382 A Japanese Patent No. 5553188 Japanese Patent Laying-Open No. 2015-67954
  • the toilet bowl usually has a receiving surface for receiving filth and a rim connected to the upper edge of the receiving surface.
  • a cleaning method of this toilet bowl there is a method of cleaning the toilet bowl by discharging the cleaning water from the water outlet formed in the rim to one side in the circumferential direction along the inner peripheral surface of the rim. known.
  • this cleaning method a wider range in the stool portion including the inner peripheral surface of the rim portion can be cleaned with the cleaning water than a method of cleaning the stool portion by discharging the cleaning water downward from the water outlet of the rim portion. There is an advantage that good cleanliness can be obtained.
  • the 1st invention is made in view of such a subject, and the object is to provide the flush toilet which can acquire the good rim washing ability.
  • Patent Document 1 includes a concave portion formed below a bowl-shaped filth receiving surface, a rim portion, and two water discharge portions, and the main flow of cleaning water discharged from the two water discharge portions flows into the concave portion.
  • a flush toilet is disclosed.
  • flush toilets are required to be able to be washed with a smaller amount of water in order to effectively use water resources.
  • FIG. 11 of Patent Document 2 shows an inflow path of cleaning water from two rim water spouting portions.
  • the main stream from these rim water spouting portions flows in a biased manner toward the front side and the right side in the recess in plan view of the toilet bowl. For this reason, it is thought that the cleaning power of the filth adhering to the back side and the left side in the recess is insufficient in the toilet front view.
  • the downward flow mainly toward the trap entrance is mainly formed in the mainstream, it is difficult to form a downward flow in the left back area of the recess in front view of the toilet, and stagnant filth remains It is also possible to do.
  • when washing is performed with a small amount of water there is a concern that the influence of the deviation of the water flow in the recess and the downward flow becomes significant.
  • the second invention is made in view of such a problem, and an object thereof is to provide a flush toilet capable of obtaining a good recess cleaning ability by suppressing the deviation of the water flow and the downward flow in the recess. .
  • the flush toilet comprises a toilet bowl body having a toilet bowl portion and a water discharge section for discharging the wash water into the toilet bowl portion, and the toilet bowl portion has a receiving surface portion for receiving filth and an upper edge portion of the receiving surface portion.
  • a rim portion connected to the rim portion, the water discharge portion has three water discharge ports formed in the rim portion, and from the three water discharge ports to one side in the circumferential direction along the inner peripheral surface of the rim portion.
  • a toilet part for discharging the wash water and the toilet bowl part has a left and right center line that bisects the left and right dimension of the outer surface part of the toilet body in plan view, and the front and rear dimensions of the inner part of the toilet bowl part It has four divided areas that are divided by a front-rear center line that bisects in the front-rear direction, and the three spouts are individually formed in each of the three divided areas among the four divided areas. According to this aspect, individual spouts are formed in each of the three divided areas among the four divided areas.
  • the inner peripheral length of the rim part from each water outlet to the other water outlet adjacent to one side in the circumferential direction is set. Can be shortened. For this reason, it becomes easy to make cleaning water reach the whole inner peripheral surface of a rim
  • the first aspect of the second invention for solving the above problem is a flush toilet.
  • the flush toilet includes a toilet body having a toilet bowl.
  • the toilet bowl portion includes a receiving surface portion for receiving filth, a rim portion connected to the upper edge portion of the receiving surface portion, and a recessed portion formed to be recessed downward from the lower edge portion of the receiving surface portion.
  • the concave portion is partitioned by three standing walls including a left standing wall and a right standing wall corresponding to the left and right sides of the triangle whose bottom side is located behind the left and right sides in plan view, and a rear standing wall corresponding to the bottom side.
  • the rim portion includes a first water outlet provided on the side of the concave portion, a second water outlet provided in front of the concave portion, and a third water outlet provided behind the concave portion in plan view. Two water outlets are provided, and the three water outlets discharge cleaning water in one circumferential direction along the rim portion.
  • FIG. 2 is a sectional view taken along line AA in FIG. 1. It is a figure for demonstrating the left-right centerline of the toilet body of 1st Embodiment, and the front-back centerline of a toilet bowl part. It is a figure which shows how the washing water flows in the initial stage in the toilet bowl part which concerns on 1st Embodiment. It is a figure which shows how the wash water flows in the middle stage in the toilet bowl part which concerns on 1st Embodiment.
  • FIG. 9 (a) is a figure which shows the toilet bowl main body which concerns on a 1st modification
  • FIG.9 (b) is a figure which shows the toilet bowl main body which concerns on 1st Embodiment. . It is a figure for demonstrating the centrifugal force provided to washing water.
  • FIG.11 (a) is a figure which shows the structure around the 2nd water discharge port which concerns on 1st Embodiment
  • FIG.11 (b) is a figure which shows the structure around the 2nd water discharge port which concerns on a 2nd modification.
  • It is a figure which shows the structure around the 3rd water discharge outlet of 1st Embodiment.
  • It is a schematic diagram which shows the example of the arrangement pattern of the water outlet which can obtain an effect (2).
  • 16 is a sectional view taken along line AA in FIG. It is a schematic diagram explaining the water flow around the turning part of 2nd Embodiment. It is a figure for demonstrating the central axis of the recessed part of 2nd Embodiment. It is a top view which expands and shows the inner edge of the recessed part of 2nd Embodiment. It is a figure which shows typically how the wash water flows in the toilet bowl part of 2nd Embodiment. It is a figure which shows typically the range through which the wash water flows in the toilet bowl part of 2nd Embodiment.
  • FIG. 1 is a side sectional view of a flush toilet 10 according to the first embodiment
  • FIG. 2 is a plan view of the flush toilet 10.
  • the flush toilet 10 includes a toilet body 12 made of ceramic.
  • the toilet body 12 is a wall-mounted toilet that is attached in a state of being hung on the side wall surface 100 of the toilet room.
  • a box containing a hot water cleaning device such as a local cleaning device, a toilet lid and a toilet seat that are rotatably supported by the box are disposed above the toilet body 12.
  • the toilet bowl body 12 has a toilet bowl portion through a toilet bowl portion 14 formed at the front portion of the toilet bowl body 12 and an entrance 16 (see also FIG. 2) formed at the bottom of the toilet bowl portion 14. 14 and a trap portion 18 communicating with the inside.
  • the trap part 18 becomes a part of the drainage passage part 20 for discharging the filth in the toilet bowl part 14 to the sewer side water channel (not shown).
  • the drainage passage portion 20 includes a connecting pipe 22 connected to the downstream end portion of the trap portion 18, and filth is discharged into the sewage side water channel through the inside thereof.
  • the trap portion 18 stores a sealed water 24 that blocks the flow of air in the direction of water flow, and the backflow of odors from the sewage side water channel is prevented by the sealed water 24.
  • FIG. 3 is a sectional view taken along line AA in FIG.
  • the toilet bowl portion 14 is formed in an elliptical shape whose front and rear dimensions are larger than the left and right dimensions in plan view.
  • the toilet bowl portion 14 includes a receiving surface portion 26 for receiving filth, a rim portion 28 that is connected to the upper edge portion of the receiving surface portion 26 and forms the upper edge portion of the toilet bowl portion 14, and a lower edge of the receiving surface portion 26. And a recess 30 formed to be recessed downward from the portion.
  • the receiving surface portion 26 and the recessed portion 30 are provided continuously in an annular shape.
  • the receiving surface portion 26 is formed so as to incline with a downward slope toward the ring center side.
  • the recessed part 30 is formed in a bottomed shape, and the inlet 16 of the trap part 18 opens at the bottom. A part of the sealing water 24 is stored in the recess 30.
  • the rim portion 28 has three rim conduits 34A to 34C formed so as to extend in the circumferential direction of the toilet bowl portion 14 from each of the three water outlets 32A to 32C.
  • the water discharge ports 32A to 32C are collectively referred to as “water discharge port 32”
  • the rim water conduits 34A to 34C are collectively referred to as “rim water conduit 34”.
  • the rim water guide channel 34 is formed to guide the cleaning water discharged from the water discharge port 32 so as to turn.
  • the rim conduit 34 has a shelf 34 a extending from the upper edge 26 a of the receiving surface 26 toward the outside of the toilet bowl 14, a standing wall 34 b rising from the outer peripheral end of the shelf 34 a, And an overhang portion 34c extending from the upper end portion of the standing wall portion 34b toward the inside of the toilet bowl portion 14.
  • the radial dimension of the shelf 34 a is formed so as to become shorter from the spout 32 in the swirl flow turning direction Da (described later). The same applies to the overhang portion 34c.
  • the wash water discharged from the water discharge port 32 gradually flows down to the receiving surface portion 26 as it leaves the water discharge port 32.
  • the three rim conduits 34 include a first rim conduit 34A to a third rim conduit 34C corresponding to each of the three first outlets 32A to 32C.
  • the first rim water conduit 34A is formed so as to extend in the swirl flow turning direction Da from the first water outlet 32A to the terminal position 34Aa with the end position 34Aa in the vicinity of the second water outlet 32B and the inner side in the plan view. Is done.
  • the second rim conduit 34B is formed so as to extend in the swirl flow turning direction Da from the second water outlet 32B to the terminal position 34Ba, with the vicinity of the third water outlet 32C and the inside thereof as the terminal position 34Ba.
  • the third rim conduit 34C is formed so as to extend from the third water outlet 32C to the terminal position 34Ca with the vicinity of the first water outlet 32A and the inside thereof as the terminal position 34Ca.
  • Each of the rim conduits 34A to 34C is formed so as to extend over an angle range corresponding to at least 1/4 of an angular range around a center point Cp (described later) of the toilet bowl portion 14.
  • FIG. 4 is a view for explaining the left-right center line La of the toilet body 12 and the front-rear center line Lb of the toilet bowl portion 14.
  • the left-right center line La of the toilet main body 12 refers to a straight line extending in the front-rear direction by equally dividing the left-right dimension Lx of the outer surface portion of the toilet main body 12 in a plan view. Specifically, a straight line that bisects the left-right dimension Lx from the left end position 12L to the right end position 12R of the outer surface portion of the toilet body 12 is the left-right center line La.
  • the front-rear center line Lb of the toilet bowl portion 14 bisects the front-rear dimension Ly of the inner surface portion of the toilet bowl portion 14 in a plan view of a horizontal section passing through the water discharge ports 32A to 32C of the toilet bowl portion 14.
  • a straight line that bisects the front-rear dimension Ly from the front end position 14F to the rear end position 14R of the inner surface portion of the toilet bowl 14 is the front-rear center line Lb.
  • the centerline Cp of the toilet bowl part 14 mentioned above refers to the intersection of the left-right centerline La and the front-rear centerline Lb.
  • the toilet bowl 14 described above has four divided regions Sr1 to Sr4 that are divided by the left-right center line La and the front-rear center line Lb of the toilet bowl 14 in a plan view.
  • a divided region on the rear side with respect to the front-rear center line Lb and on the right side with respect to the left-right center line La is referred to as a first divided region Sr1.
  • the divided areas in the counterclockwise direction in plan view from the first divided area Sr1 are sequentially designated as a second divided area Sr2, a third divided area Sr3, and a fourth divided area Sr4.
  • the second divided region Sr2 and the third divided region Sr3 are front divided regions
  • the first divided region Sr1 and the fourth divided region Sr4 are rear divided regions.
  • the toilet main body 12 further includes a water discharge section 36 having the three water discharge ports 32A to 32C described above.
  • the water discharge unit 36 has a water flow unit 38 to be described later in addition to the three water discharge ports 32A to 32C.
  • the water discharge portion 36 is for discharging wash water from the three water discharge ports 32A to 32C along the inner peripheral surface of the rim portion 28 in the swirl flow turning direction Da.
  • the water discharger 36 discharges the wash water into the toilet bowl 14 from each of the water discharge ports 32A to 32C, thereby forming a swirling flow that swirls in the toilet bowl 14 in one direction.
  • a swirl flow swirling around one side Da (counterclockwise direction) in the circumferential direction of the toilet bowl 14 is formed.
  • one side Da in the circumferential direction is referred to as a swirl flow swirl direction Da.
  • the three spouts 32A to 32C are individually formed in each of the three divided areas among the four divided areas Sr1 to Sr4 of the toilet bowl portion 14.
  • the three water outlets 32A to 32C include a first water outlet 32A located in the first divided area Sr1, a second water outlet 32B located in the third divided area Sr3, and a position located in the fourth divided area Sr4. And a third water outlet 32C. Any of the water discharge ports 32A to 32C is formed so as to open in the swirl flow swirl direction Da.
  • the water flow portion 38 is a hollow structure portion disposed on the back side of the rim portion 28 (outside in the radial direction of the toilet bowl portion 14).
  • the water passing portion 38 communicates with each of the water discharge ports 32A to 32C and becomes a passage for the washing water supplied to each of the water discharge ports 32A to 32C.
  • the water passage 38 includes an inflow passage 38a, a right water passage 38b (first water passage), and a left water passage 38c (second water passage).
  • the inflow path 38 a is disposed behind and on the back side of the rim portion 28.
  • the right-side water passage 38b is disposed on the back side of one right side portion 28R among the side portions on both the left and right sides of the rim portion 28.
  • the left water passage 38c is disposed on the back side of the other left side portion 28L among the left and right side portions of the rim portion 28.
  • the cleaning water supplied from the water supply pipe 102 which becomes a part of the cleaning water supply device flows into the inflow path 38a.
  • 1 and 2 show a supply path Ra of the cleaning water from the water supply pipe 102 to the inflow path 38a.
  • the cleaning water flows into the inflow path 38a through the introduction hole 38e formed in the rear wall 38d that is disposed behind the rim portion 28 and defines the inflow path 38a.
  • the cleaning water supply device supplies cleaning water by a water supply direct pressure type water supply method using the tap water supply pressure.
  • the inflow path 38 a is formed so as to expand in the left-right direction from the front of the introduction hole 38 e that becomes the inflow position Pa of the cleaning water from the cleaning water supply device.
  • the right-hand water passage 38b communicates with one end of the inflow passage 38a in the left-right direction
  • the left-hand water passage 38c communicates with the other end in the left-right direction.
  • the right water passage 38b is formed on the back side of the right side portion 28R of the rim portion 28 so as to extend along the front-rear direction.
  • a first water outlet 32A is formed at the downstream end of the right-side water passage 38b.
  • the left water passage 38c includes a folded portion 38ca formed at the downstream end of the left water passage 38c, and a front / rear extending portion 38cb formed so as to communicate with the folded portion 38ca and extend in the front-rear direction. included.
  • a second water discharge port 32B is formed at the downstream end of the folded portion 38ca that is the downstream end of the left water passage 38c.
  • a branch portion 38cc is formed in the front-rear extending portion 38cb of the left water passage 38c so as to extend from the midway position in the front-rear direction to the swirl flow turning direction Da and radially inward.
  • a third water discharge port 32 ⁇ / b> C is formed at the downstream end of the branch portion 38 cc, which is the midway position of the left water passage 38 c.
  • the inner bottom surface 38cd in the range from the midway position of the front / rear extending portion 38cb to the branching portion 38cc is formed so as to rise as it approaches the third water discharge port 32C.
  • the wash water supplied from the inflow passage 38a is guided to flow to the first water discharge port 32A (see direction Db).
  • the front-rear extending portion 38cb of the left water passage 38c a part of the washing water supplied from the inflow passage 38a flows toward the folded portion 38ca (see direction Dc), and the remaining portion is guided toward the branch portion 38cc. It flows as it is (see direction Dd).
  • the folded portion 38ca the washing water supplied from the upstream front / rear extending portion 38cb flows so as to be folded radially inward and guided to the second water discharge port 32B (see direction De).
  • cleans the inside of the toilet bowl part 14 with the so-called washing-off type washing
  • the operation members such as a switch and a lever for starting the supply of the cleaning water
  • the cleaning water within a predetermined flow rate range is supplied from the cleaning water supply device into the water passing portion 38 of the flush toilet 10.
  • the operation from the start to the end of the supply of cleaning water within a predetermined flow rate range will be described as a single cleaning operation.
  • Wash water flows into the inflow passage 38a of the water flow section 38, and the wash water that has flowed in is discharged from the water outlets 32A to 32C while flowing through the right water passage 38b and the left water passage 38c.
  • a water pressure corresponding to the water supply pressure is applied to the wash water in the water flow section 38 by the wash water supply device, and the wash water to which the water pressure is applied is supplied to each spout 32A. Exhaled from ⁇ 32C.
  • FIG. 5 is a view showing how the washing water flows in the toilet bowl 14.
  • This figure shows the initial stage (first stage) at which the wash water begins to flow into the toilet bowl 14.
  • the flow of washing water in the toilet bowl 14 is shown with an arrow.
  • the wash water is discharged from each of the first water discharge port 32A and the third water discharge port 32C, and the wash water is not discharged from the second water discharge port 32B.
  • the wash water discharged from the first water discharge port 32A forms a flow Dwa that swirls along the first rim conduit 34A.
  • the wash water discharged from the third water discharge port 32C forms a flow Dwb that swirls along the third rim conduit 34C.
  • the wash water flowing along the rim water guide paths 34A and 34C gradually flows down from the shelves 34a of the rim water guide paths 34A and 34C to the receiving surface portion 26, and forms a flow Dwc that turns while moving downward to the receiving surface portion 26. .
  • the water discharge unit 36 from the washing water inflow position Pa in the water flow unit 38 to each of the water discharge ports 32A to 32C.
  • the length of the water passage is set so as to satisfy a predetermined condition.
  • the length of the water flow path from the inflow position Pa of the wash water in the water flow section 38 to each of the first water discharge port 32A, the second water discharge port 32B, and the third water discharge port 32C is represented by lengths La1, La2, Let it be La3.
  • the length La2 of the water flow path of the second water discharge port 32B is set to be longer than the lengths La1 and La3 of the water flow paths of the first water discharge port 32A and the third water discharge port 32C.
  • the timing which starts discharge of the washing water of 32A of 1st spouts and 32C of 3rd spouts becomes an equivalent timing.
  • “equivalent” includes both the case where the comparison targets are the same and the case where they are substantially the same. Here, it means that both the case where the timing of starting the discharge of the washing water is the same and the case where the timing is almost the same are included. The interpretation of “equivalent” is the same in the following.
  • FIG. 6 and 7 are other views showing how the washing water flows in the toilet bowl 14.
  • an intermediate stage (second stage) after a lapse of time from the initial stage is shown.
  • 6 shows a cross-sectional view taken along the line AA of the flush toilet 10 as in FIG. 3
  • FIG. 7 shows a side partial sectional view of the flush toilet 10.
  • wash water is discharged into the toilet bowl 14 from the second water discharge port 32B in addition to the first water discharge port 32A and the third water discharge port 32C.
  • the flow of the cleaning water discharged from the first water outlet 32A and the third water outlet 32C is the same as in the initial stage.
  • Wash water discharged from the second water discharge port 32B forms a flow Dwd that swirls along the second rim conduit 34B.
  • the wash water flowing along the second rim conduit 34B gradually falls from the shelves 34a of the second rim conduit 34B to the receiving surface portion 26, and forms a flow Dwe that turns while facing the lower portion of the receiving surface portion 26.
  • Flows Dwa, Dwb, Dwc, Dwd, Dwe are formed as a swirl flow swirling in the swirl flow swirl direction Da by the wash water discharged from each of the water discharge ports 32A to 32C.
  • the flows Dwc and Dwe turn while going downward from the receiving surface portion 26 of the toilet bowl portion 14, and flow into the recess 30 from the receiving surface portion 26.
  • the flow Dwc includes a flow Dwc (1) formed by joining a part of the cleaning water discharged from the second water discharge port 32B and a part of the cleaning water discharged from the third water discharge port 32C.
  • the flow Dwc (1) is mainly formed on the receiving surface portion 26 behind the concave portion 30.
  • the flow Dwc includes a flow Dwc (2) formed by joining a part of the washing water discharged from the third water discharge port 32C and a part of the washing water discharged from the first water discharge port 32A. It is.
  • the flow Dwc (2) is mainly formed on the receiving surface portion 26 of the second divided region Sr2, which is the upstream divided region of the two front divided regions Sr2 and Sr3.
  • the main flow Fw is mainly adjacent to the third divided region Sr3 in the swirl flow swirl direction Da from the third divided region Sr3, which is the downstream divided region of the two front divided regions Sr2, Sr3. It is formed on the receiving surface portion 26 in a range extending to the four divided regions Sr4. More specifically, the mainstream Fw is the third divided region on the side (left side) and the front side of the third divided region Sr of the two front divided regions Sr2 and Sr3 when viewed from the recess 30 of the toilet bowl portion 14. It is formed on the receiving surface portion 26 of Sr3 and the fourth divided region Sr4 (see range Sa).
  • the main flow Fw becomes a water flow having a strong water flow and a large flow rate when the wash water discharged from each of the first water discharge port 32A and the second water discharge port 32B joins.
  • the main flow Fw flows from the receiving surface portion 26 toward the inlet 16 of the trap portion 18 through the recess 30. More specifically, the main flow Fw flows from the third divided region Sr3 to the fourth divided region Sr4 on the receiving surface portion 26, that is, from the front side to the rear side on the receiving surface portion 26, and then into the concave portion 30. On the other hand, it flows into the recess 30 obliquely from the front side (left side and front side).
  • the filth in the recess 30 of the toilet bowl portion 14 is swept into the trap portion 18 through the inlet 16 using the above-described drop of the wash water flowing as the swirl flow, in particular, the drop of the wash water flowing as the main flow Fw.
  • the head of the cleaning water flowing as the main flow Fw is the difference in height from the confluence position of the cleaning water discharged from each of the first water outlet 32A and the second water outlet 32B to the inlet 16 of the trap portion 18. Hd (see FIG. 7).
  • the main flow Fw flows into the recess 30, so that it flows forward after colliding with the right side wall 30 a (first side wall) of the recess 30 in addition to the flow toward the inlet 16 of the trap portion 18.
  • a heading flow Dwf is formed. This flow Dwf flows so as to collide with the left wall 30b after flowing along the right wall 30a of the recess 30. The flow Dwf tends to flow while being lifted up by the momentum when it collides with the right side wall 30a and the left side wall 30b of the recess 30.
  • This increased flow Dwf merges with the flow Dwc (2) flowing into the recess 30 from the front side toward the rear side on the receiving surface portion 26 (see range Sb), and thereby flows toward the inlet 16 of the trap portion 18. Dwg is formed. Similarly to the flow Dwc (2), the flow Dwg also flows from the front side in the toilet bowl 14 toward the rear side.
  • the inner peripheral length of the rim portion 28 from the water outlet to another water outlet becomes longer, it becomes difficult for a sufficient amount of washing water to reach a position away from the water outlet.
  • the inner peripheral length of the rim portion 28 from the water outlet to another water outlet can be shortened in the entire rim portion 28, the cleaning water can reach the entire inner peripheral surface of the rim portion 28. It becomes easy to obtain a good rim cleaning ability.
  • the main flow Fw toward the inlet 16 of the trap portion 18 is formed by joining the cleaning water discharged from the first water discharge port 32A and the cleaning water discharged from the second water discharge port 32B. Since the second water discharge port 32B is in the front third divided region Sr3, the path through which the wash water flows from the second water discharge port 32B to the inlet 16 of the trap portion 18 rather than being provided in the rear divided region. Can be shortened. As a result, the water flow of the main flow Fw formed by the wash water discharged from the second water discharge port 32B becomes stronger, and the sewage in the toilet bowl portion 14 is pushed to the inlet 16 of the trap portion 18 by the main flow Fw of the strong water flow. Good filth discharge performance can be obtained.
  • the main flow Fw toward the inlet 16 of the trap portion 18 is such that the wash water discharged from the first water discharge port 32A and the wash water discharged from the second water discharge port 32B are on the receiving surface portion 26, that is, the toilet bowl portion 14. It is formed by merging on the inner peripheral surface. Therefore, the receiving surface part 26 can be washed by the main stream Fw of strong water, and good toilet bowl washing performance can be obtained.
  • the inner peripheral length of the rim portion 28 from one water outlet to another water outlet can be shortened as compared with the case where two water outlets are formed in the rim portion 28.
  • the amount of cleaning water discharged from the three water discharge ports 32A to 32C can be reduced, and the width of the shelf 34a of the rim conduit 34 can be reduced. Dimensions such as the height of the standing wall 34b can be reduced.
  • the water discharger 36 is configured such that the wash water is discharged from the second water discharge port 32B after the wash water is discharged from the first water discharge port 32A and the third water discharge port 32C, the following advantages are obtained.
  • Increasing the ratio of the main flow rate which is the flow rate of the main flow Fw to the total wash water amount used for a single cleaning operation, can increase the main flow rate without increasing the total wash water amount.
  • the toilet bowl cleaning ability can be increased.
  • the ratio of the main flow rate to the total amount of cleaning water can be increased. Therefore, the waste discharge capacity and the toilet bowl cleaning capacity can be enhanced by increasing the ratio of the main flow rate without increasing the total amount of cleaning water.
  • the water discharger 36 has the largest amount of water discharged from the first water outlet 32A, the second largest amount of water discharged from the second water outlet 32B, and the smallest amount of water discharged from the third water outlet 32C. Composed. That is, the cleaning water discharge amount is configured to decrease in the order of the first water discharge port 32A, the second water discharge port 32B, and the third water discharge port 32C. From another viewpoint, the first water discharge port 32A is configured to have a larger discharge amount of the cleaning water than the other two second water discharge ports 32B and 32C.
  • the washing water discharge amount here refers to the flow rate (L / s) of washing water per unit time passing through the water outlet.
  • the water discharge unit 36 is configured as follows.
  • the water flow path in the water flow part 38 from the washing water inflow position Pa (see FIG. 3) from the washing water supply device to each of the water discharge ports 32A to 32C is examined. It is assumed that there are water passages corresponding to each of the first water outlet 32A to the third water outlet 32C.
  • the amount of washing water discharged from the water outlet is proportional to the passage cross-sectional area of a portion (hereinafter referred to as a flow rate setting unit) having the smallest passage cross-sectional area in the water flow path for supplying cleaning water to the water outlet.
  • the flow rate setting unit of the first water outlet 32A is the first water outlet 32A itself at the downstream end of the water flow path of the first water outlet 32A.
  • the flow rate setting unit of the second water discharge port 32B is also the second water discharge port 32B itself, and the flow rate setting unit of the third water discharge port 32C is also the third water discharge port 32C itself.
  • the water discharge portion 36 is configured such that the opening area which is the passage cross-sectional area of the first water discharge port 32A is the largest, the opening area of the second water discharge port 32B is the next largest, and the third water discharge port 32C is the smallest. That is, it is configured such that the opening area decreases in the order of the first water outlet 32A, the second water outlet 32B, and the third water outlet 32C.
  • the first water outlet 32A is configured to have a larger opening area than the second water outlet 32B and the third water outlet 32C.
  • the opening area (passage cross-sectional area) refers to a cross-sectional area in a cross section orthogonal to the water flow direction.
  • the magnitude relationship between the respective washing water discharge amounts of the water outlets 32A to 32C is configured to be the same as the magnitude relation of the respective opening areas of the water outlets 32A to 32C.
  • FIG. 8 is a diagram showing the inner peripheral lengths Lb1 to Lb3 of the rim conduits 34A to 34C of the rim portion 28.
  • the inner peripheral length here refers to the end positions 34Aa to 34Aa to 34C of the rim conduits 34A to 34C from the water discharge ports 32A to 32C at the start positions of the rim conduits 34A to 34C in the horizontal section passing through the rim portion 28.
  • the inner peripheral length Lb1 of the first rim conduit 34A is the length of the inner peripheral surface in the range from the first water outlet 32A to the terminal position 34Aa of the first rim conduit 34A.
  • the inner peripheral length Lb1 of the first rim conduit 34A is the longest
  • the inner periphery Lb2 of the second rim conduit 34B is the second longest
  • the inner periphery Lb3 of the third rim conduit 34C is the shortest.
  • the inner circumferential length Lb1, the inner circumferential length Lb2, and the inner circumferential length Lb3 are formed so as to be shorter in this order.
  • the water discharger 36 has a relationship in magnitude of the amount of wash water discharged from each of the three water discharge ports 32A to 32C, the first rim water conduit 34A to the third rim water conduit 34C connected to each of the three water discharge ports 32A to 32C.
  • the circumferential lengths Lb1 to L3 are configured to have the same magnitude relationship.
  • the first water discharge port 32A connected to the first rim conduit 34A having the longest inner circumferential length Lb1 has the largest washing water discharge amount.
  • the third water discharge port 32C connected to the third rim conduit 34C having the shortest inner circumferential length Lb3 has the smallest amount of discharge of the cleaning water.
  • the ratio of the wash water discharge amounts of the three water discharge ports 32A to 32C is connected to each of the three water discharge ports 32A to 32C. It is configured so as to satisfy a relationship that is equivalent to the ratio of the inner circumferential lengths Lb1 to Lb3 of 34C. For example, when the ratio of the inner peripheral lengths Lb1 to Lb3 is 5: 3: 2, the ratio of the cleaning water discharge amounts of the three water discharge ports 32A to 32C satisfies the same relationship as 5: 3: 2. Configured.
  • the water discharger 36 is configured to satisfy a relationship in which the ratio of the cleaning water discharge amount of each of the three water discharge ports 32A to 32C is equivalent to the ratio of the opening area of each of the three water discharge ports 32A to 32C. Is done.
  • the first water outlet 32A has a larger amount of washing water discharge than the other second water outlet 32B and the third water outlet 32C. Therefore, the toilet bowl portion 14 is washed by the water discharged from the first water outlet 32A. It becomes easy to form the mainstream Fw inside. For this reason, by adjusting the positions of the water discharge ports 32A to 32C, the discharge direction of the wash water, etc., it is possible to set various ways of flowing the main flow Fw in the toilet bowl 14, and the degree of freedom of the washing mode by the wash water Can be enhanced.
  • the magnitude relation of the wash water discharge amount of the three water outlets 32A to 32C is the same as the magnitude relation of the inner peripheral lengths of the first rim water conduit 34A to the third rim water conduit 34C connected to the three water outlets 32A to 32C. Configured to be. Therefore, a large amount of cleaning water can be flowed through the first rim conduit 34A having a long inner peripheral length, and a sufficient amount of cleaning water can be easily distributed throughout the first rim conduit 34A.
  • the amount of cleaning water used in the third rim conduit 34C can be suppressed by flowing a small amount of cleaning water in the third rim conduit 34C having a short inner peripheral length. For this reason, a sufficient amount of cleaning water is distributed over the entire inner peripheral surface of the rim portion 28 to obtain a good rim cleaning capability, and the amount of cleaning water used for cleaning the entire inner peripheral surface of the rim portion 28 is reduced. Easy to suppress.
  • the right-side water passage 38b that supplies cleaning water to the first water outlet 32A has a larger passage cross-sectional area than the left-side water passage 38c in order to increase the amount of washing water discharged from the first water outlet 32A over the other water outlets 32B and 32C. It is necessary to ensure.
  • the right side passage having a larger passage cross-sectional area than the first water discharge port 32A is provided in the front divided region.
  • the front and rear dimensions of the water channel 38b can be suppressed, and the water discharge portion 36 can be easily downsized. Therefore, it is possible to easily reduce the size of the water discharger 36 as a whole while obtaining good rim cleaning ability, waste discharging ability, and toilet bowl cleaning ability.
  • the total amount of cleaning water discharged from the first water outlet 32A and the second water outlet 32B (hereinafter also referred to as the total discharge amount) is larger than the amount of cleaning water discharged from the third water outlet 32C.
  • the total discharge amount is larger than the amount of cleaning water discharged from the third water outlet 32C.
  • the water discharger 36 has a ratio of the total discharge amount of the first water discharge port 32A and the second water discharge port 32B to the total amount of water used in one cleaning operation of 60% to 80%. It is preferable to be configured so that Here, the total amount of washing water is synonymous with the total amount of washing water discharged from each of the first water outlet 32A to the third water outlet 32C.
  • the water discharger 36 is configured such that the ratio of the wash water discharge amount of the first water discharge port 32A to the total wash water amount used in one cleaning operation is 40% to 60%.
  • the first water discharge port 32A to the third water discharge port 32C are the third downstream region Sr2 and the third divided region Sr3 on the downstream side of the swirl flow swirl direction Da.
  • Each of the divided areas Sr3, the two rear first divided areas Sr1, and the fourth divided areas is formed individually.
  • the first water discharge port 32A to the third water discharge port 32C are in the second divided region Sr2 upstream of the swirling flow turning direction Da in the two front divided second regions Sr2 and Sr3. Is not formed.
  • Fig.9 (a) is the figure which shows the toilet bowl main body 12 which concerns on a 1st modification.
  • the second water discharge port 32B is formed in the second divided region Sr2.
  • the small water received by the receiving surface portion 26 of the toilet bowl 14 may be scattered around (see direction Df).
  • the small water is transmitted to the inner peripheral surface region along the circumferential direction. There is a possibility of entering from 32B to the right water passage 38b.
  • FIG. 10 is a view showing the toilet body 12 according to the first modification of FIG.
  • Centrifugal force Fc directed radially outward is applied to the wash water flowing along the inner peripheral surface of the toilet bowl 14.
  • the centrifugal force Fc increases as the radius of curvature of the portion through which the washing water flows, and the greater the centrifugal force, the weaker the water flow flowing toward the inlet 16 of the trap portion 18 becomes.
  • the second water discharge port 32B is provided in the second divided region Sr2.
  • the cleaning water discharged from the water discharge port 32 flows through the inner peripheral surface region at the left and right center position Pa on the front side of the rim portion 28.
  • the inner peripheral surface region at the left and right center position Pa since the toilet bowl portion 14 is formed in an elliptical shape having a front-rear dimension larger than the left-right dimension, the radius of curvature is usually likely to be smaller than other positions. Therefore, when the second water discharge port is provided in the second divided region Sr2, the water flow of the cleaning water discharged from the second water discharge port 32B is likely to be weakened by the centrifugal force Fc.
  • the wash water discharged from the second water discharge port 32B is used as the center of the left and right sides of the rim portion 28 having a small curvature radius. It is possible to flow toward the inlet 16 of the trap portion 18 without going through the inner peripheral surface area at Pa. Accordingly, the main flow Fw formed by the wash water discharged from the second water outlet 32B is less likely to weaken the water force due to the centrifugal force Fc, and is a better toilet bowl than the second water outlet 32B disposed in the second divided region Sr2. It is possible to obtain cleaning ability and waste discharge ability.
  • the left water passage 38c that supplies the cleaning water to the second water discharge port 32B is formed to extend along the front-rear direction on the back side of the left side portion 28L.
  • the left water passage 38c is formed on the back side of the left side portion 28L on the side where the third divided region Sr3 where the second water discharge port 32B is formed is located in the left side portion 28L and the right side portion 28R of the rim portion 28. Is done.
  • the left water passage 38c is formed so as to straddle the front-rear center line Lb on the back side of the left side portion 28L in plan view. From another viewpoint, the left water passage 38c is not formed so as to straddle the front-rear center line Lb on the back side of the right side portion 28R of the rim portion 28. This advantage will be described.
  • the left-side water passage 38c can be arranged with a layout that does not pass through the back side of the left and right center position Pb on the front side of the rim portion 28. Therefore, the water flow path from the washing water inflow position Pa can be made shorter than the water flow path arranged so as to pass through the back side of the right and left center position Pb of the rim portion 28, and the water flow from the second water discharge port 32B.
  • the strong washing water can be discharged. As a result, better rim cleaning ability, toilet bowl cleaning ability, and waste discharging ability can be obtained. This effect is obtained more effectively as the position of the second water discharge port 32B approaches the rear side of the third divided region Sr3 of the toilet bowl portion 14.
  • the water passage for the first water outlet 32A and the water passage for the second water outlet 32B are connected to the rim portion. It is necessary to arrange side by side in the left-right direction behind the right side portion 28R of 28.
  • the right-side water passage 38b for the first water outlet 32A and the left-side water passage 38c for the second water outlet 32B are arranged in the left-right direction behind the right-side portion 28R of the rim portion 28. It will be better without placement. Therefore, the width dimension of the back side portion of the right side portion 28R of the rim portion 28 can be reduced. Thereby, as shown in FIG. 1, FIG. 2, the width dimension of the side part 12b extended to the side from the upper end edge of the toilet bowl part 14 among the upper surface parts 12a of the toilet bowl main body 12 can be made small.
  • a straight section 34Bb that extends linearly at a position away from the second water discharge port 32B in the swirl flow swirl direction Da is formed on the inner peripheral surface of the second rim conduit 34B.
  • a curvature decreasing section 34Bc formed so that the curvature decreases as the distance from the second water outlet 32B increases. Is formed.
  • a straight section 34Cb that extends linearly at a position away from the third water discharge port 32C in the swirl flow swirl direction Da is also formed on the inner peripheral surface of the third rim conduit 34C.
  • a curvature decreasing section 34Cc formed such that the curvature decreases as the distance from the third water outlet 32C increases in a continuous range from the third water outlet 32C to the straight section 34Cb. Is formed.
  • curvature decreasing sections 34Bc and 34Cb continuous from the water outlets 32B and 32C are formed on the inner peripheral surfaces of the rim conduits 34B and 34C. Therefore, the strong wash water immediately after being discharged from each of the water outlets 32B and 32C flows through the section having a large radius of curvature in the range from the discharge from each of the water outlets 32B and 32C to passing through the straight sections 34Bb and 34Ca. Therefore, it becomes difficult to apply a large centrifugal force to the wash water flowing through the range. For this reason, the water flow toward the inlet 16 of the trap portion 18 after being discharged from the water outlets 32B and 32C is less likely to weaken from the strong water state immediately after being discharged from the water outlets 32B and 32C. As a result, the filth can be pushed in by the strong water flow, and a better filth discharge performance can be obtained.
  • Fig.11 (a) is a figure which shows the structure around the 2nd water discharge port 32B which concerns on embodiment.
  • the second water discharge port 32B includes an inner standing wall 34b (hereinafter also referred to as an inner standing wall 34b (1)) and an outer standing wall 34b (hereinafter referred to as an outer standing wall 34b (2)) that are adjacent in the radial direction of the toilet bowl 14. (Also called).
  • the circumferential end portion 34ba of the outer standing wall portion 34b (2) and the circumferential end portion 34bb of the inner standing wall portion 34b (1) are virtual extending from the center point Cp of the toilet bowl portion 14. It arrange
  • alignment includes a case where the angle range where the two standing wall portions 34b overlap in the circumferential direction is 3 ° or less when viewed from the center point Cp of the toilet bowl portion 14. It can be said that the two standing wall portions 34b are arranged so that the angle range overlapping in the circumferential direction is 3 ° or less when viewed from the center point Cp of the toilet bowl portion 14. This advantage will be described.
  • FIG. 11B is a diagram showing a structure around the second water discharge port 32B according to the second modification.
  • the circumferential end portions 34ba and 34bb of the two standing wall portions 34b do not line up on the imaginary line Lc, and the angle range where the two standing wall portions 34b overlap in the circumferential direction becomes large.
  • separate water channel portions 40 connected to the upstream end and the downstream end of the folded portion 38ca are formed side by side in the radial direction.
  • the two inner wall surfaces 38f opposed in the radial direction at the folded-back portion 38ca are directed to the abutting position 38g of the folded-back portion 38ca because the rim conduit 34A is formed radially inward with respect to the folded-back portion 38ca. It becomes easy to form so that it may become narrow. Therefore, the width dimension of each water channel portion 40 is also easily formed so as to become narrower as it approaches the folded portion 38ca. For this reason, in the path Rb from the front-rear extending portion 38cb of the left water passage 38c to the second water discharge port 32B via the folded portion 38ca, the portion having a smaller passage cross-sectional area than the second water discharge port 32B is the inner vertical wall portion.
  • the 2nd water discharge port 32B is formed in the division area Sr3 of the front side of the toilet bowl part 14, it exists in the position where it is hard to be visually recognized by the user at the time of normal use. Therefore, it arrange
  • “during normal use” refers to a situation in which a user sits on a toilet seat and uses a toilet after approaching the flush toilet 10 from the front.
  • FIG. 12 is a view showing a structure around the third water discharge port 32C.
  • the width dimension of the left water passage 38c at the position where the left water passage 38c and the front-rear center line Lb overlap is defined as W1.
  • a width change region 38h is formed so that the width dimension gradually increases toward the rear from the front-rear center line Lb.
  • the third water discharge port 32C is formed behind the reference position 38i.
  • the third water discharge port 32C is formed at a position ahead of the reference position 38i (for example, the range Sd), it is necessary to secure a wall portion for guiding the cleaning water to the third water discharge port 32C around the third water discharge port 32C.
  • the water passage from the periphery to the second water discharge port 32B tends to become narrow.
  • the third water outlet 32C is formed behind the reference position 38i, the water passage toward the second water outlet 32B is less likely to be narrowed by the wall portion for guiding the wash water to the third water outlet 32C. It becomes easy to supply a sufficient amount of washing water to the second water discharge port 32B.
  • the flush toilet 10 has been described with an example of using the wash-off method as the cleaning method, the inside of the toilet bowl 14 may be cleaned by a cleaning method combined with another method such as a siphon type or a siphon-zette type.
  • a cleaning method combined with another method such as a siphon type or a siphon-zette type.
  • the flush toilet 10 has been described with respect to an example in which a water supply direct pressure system is used as a water supply system, a water supply system such as a gravity water supply system using gravity or a flash valve system may be used.
  • the toilet body 12 has been described by taking a wall-mounted toilet as an example, it may be a floor-standing toilet installed on the floor surface of a toilet room.
  • the toilet body 12 may be made of resin or the like in addition to pottery.
  • the shelf 34 a of the rim conduit 34 is such that the gradient of the upper surface portion connected to the upper edge 26 a of the receiving surface portion 26 is gentler than the gradient of the inner surface portion of the receiving surface portion 26 connected to the upper edge 26 a of the receiving surface portion 26. It only has to be formed. As long as these conditions are satisfied, the upper surface portion of the shelf 34a may be formed in a flat shape as shown in FIG. 1 or the like, or may be formed in an arc shape. Further, the rim conduit 34 has a vertical cross-sectional shape orthogonal to the swirl flow swirl direction D formed into a curved surface that is continuous by the upper surface portion of the shelf portion 34a of the rim conduit 34 and the lower surface portion of the overhang portion 34c. May be.
  • the rim conduit 34 may not have the overhang portion 34c. Further, the example has been described in which the three rim conduits 34A to 34C are formed so as to be separated from the end positions 34Aa, 34Ba, 34Ca without being continuous with other rim conduits. And may be formed continuously.
  • the three water discharge ports 32A to 32C may be formed individually in each of the three divided regions among the four divided regions Sr1 to Sr4. From this viewpoint, the positions of the three water discharge ports 32A to 32C are not limited to the contents of the embodiment.
  • FIG. 13 is a schematic diagram showing an example of an arrangement pattern of the water discharge ports 32A to 32C that can obtain the effect (1).
  • the first water outlet 32A is provided in the first divided region Sr1
  • the second water outlet 32B is provided in the second divided region Sr2, and the fourth division.
  • the third water discharge port 32C may be formed in the region Sr4.
  • a first water discharge port 32A is formed in the first divided region Sr1
  • a second water discharge port 32B is formed in the second divided region Sr2
  • a third water discharge port 32C is formed in the third divided region Sr3. May be.
  • FIG. 13A a first water discharge port 32A is formed in the first divided region Sr1
  • a second water discharge port 32B is formed in the second divided region Sr2
  • a third water discharge port 32C is formed in the third divided region Sr3. May be. Further, as shown in FIG.
  • a first water discharge port 32A is formed in the second divided region Sr2
  • a second water discharge port 32B is formed in the third divided region Sr3
  • a third water discharge port 32C is formed in the fourth divided region Sr4. May be.
  • the first water discharge port 32A having the largest cleaning water discharge amount may be formed not in the rear divided region but in the front divided region. In any case, it can be said that, out of the four divided areas Sr1 to Sr4, the water outlet is not formed in one divided area, and the water outlet is individually formed in the other three divided areas.
  • the three water discharge ports 32A to 32C may be formed so that at least one of the four divided regions Sr1 to Sr4 is included in each of the four divided regions Sr1 to Sr4, and straddles adjacent divided regions. It may be formed as follows. For example, while forming the second water discharge port 32B in the third divided region Sr3 and the third water discharge port 32C in the fourth divided region Sr4, the first water discharge port 32A straddles the first divided region Sr1 and the second divided region Sr2. You may form so that. In addition, the second water discharge port 32B may be formed so as to straddle the adjacent divided regions, or the third water discharge port 32C may be formed so as to straddle the adjacent divided regions. Good.
  • the three water outlets 32A to 32C are arranged so that an angle range of 1/4 or more is separated from the center point Cp of the toilet bowl portion 14. It may be. Further, the washing water discharge amount and the opening area of the three water discharge ports 32A to 32C are not limited to the contents of the embodiment. For example, the wash water discharge amounts of the three water discharge ports 32A to 32C may be the same, or only the wash water discharge amounts of two of the three water discharge ports 32A to 32C may be the same.
  • the toilet bowl portion 14 has two divided regions separated by the front-rear center line Lb.
  • the two divided areas here are composed of a first divided area Sr1 and a fourth divided area Sr4, and the other is a second divided area Sr2 and a third divided area. It is composed of Sr3.
  • the two water discharge ports include a first water discharge port 32A formed in one of the two divided regions Sr1 to Sr4 and a second water discharge port 32B formed in the front divided region. As long as it is included.
  • the second water discharge port 32B may be formed in the same divided region as the divided region in which the first water discharge port 32A is formed, or may be formed in another divided region.
  • the positions of these two water discharge ports 32A and 32B are not limited to the contents of the embodiment.
  • FIG. 14 is a schematic diagram illustrating an example of an arrangement pattern of the water discharge ports 32A and 32B that can obtain the effect (2).
  • the first water discharge port 32A is formed in the first divided region Sr1
  • the second water discharge port 32B is formed in the third divided region Sr3. Also good.
  • the first water discharge port 32A may be formed in the second divided region Sr2
  • the second water discharge port 32B may be formed in the third divided region Sr3.
  • a third water discharge port 32C may be further formed in the fourth divided region Sr4.
  • each of the water discharge ports 32A to 32C of the rim portion 28 of the toilet bowl portion 14 is disposed so as to overlap in the vertical direction.
  • each of the water discharge ports 32A to 32C of the rim portion 28 has any one of the water discharge ports 32A to 32C, or all the water discharge ports 32A to 32C do not overlap in the vertical direction.
  • the front-rear center line Lb of the toilet bowl portion 14 is divided in the left-right direction by equally dividing the front-rear dimension of the inner surface portion of the toilet bowl portion 14 in a plan view of the horizontal section passing through the lowermost spout. It is defined by a straight line that extends.
  • the water discharger 36 joins the wash water discharged from the first water discharge port 32A and the wash water discharged from the second water discharge port 32B to generate the main flow Fw toward the inlet 16 of the drainage passage unit. Configured to form.
  • the water discharger 36 can be configured to form such a main flow Fw by adjusting the positions of the water discharge ports 32A and 32B, the cleaning water discharge amount, and the cleaning water discharge direction.
  • discharge start timing the timing of starting the discharge of the wash water from the first water outlet 32A and the third water outlet 32C.
  • the discharge start timing may be earlier than the discharge start timing of the wash water from the second water discharge port 32B, and the discharge start timing may be shifted between the first water discharge port 32A and the third water discharge port 32C.
  • the water discharge unit 36 adjusts the passage cross-sectional area of the water flow path corresponding to the water discharge ports 32A to 32C in order to adjust the discharge amount of the cleaning water at each of the water discharge ports 32A to 32C has been described.
  • the washing water discharge amount may be adjusted by a throttle valve or the like provided in the middle of the water flow path for each of the water discharge ports 32A to 32C.
  • a valve mechanism such as an electrically driven valve may be used to adjust the timing for starting the discharge of the wash water from each of the water discharge ports 32A to 32C.
  • the three water outlets may include a first water outlet having a larger amount of washing water discharged than the other two water outlets. According to this aspect, it becomes easy to form a mainstream in the toilet bowl by the wash water discharged from the first water outlet. For this reason, by adjusting the positions of the three water outlets, the discharge direction of the washing water, and the like, various ways of flowing the main flow in the toilet bowl can be set, and the degree of freedom of the washing mode by the washing water can be increased.
  • the first spout may be provided in a rear divided area of the four divided areas.
  • the water passage that supplies the cleaning water to the first water outlet has a larger passage cross-sectional area in order to increase the amount of cleaning water discharged from the first water outlet than the other water outlets.
  • the front and rear dimensions of the water passage having a larger passage cross-sectional area than the first water outlet provided in the front divided area It becomes easy to make the water discharge part small. Therefore, the whole water discharge part can be easily miniaturized while obtaining good rim cleaning ability.
  • the flush toilet of the 4th mode of the 1st invention is adjacent to one side of the peripheral direction to the divided field in which the 1st spout is formed among the four divided fields in the 2nd mode or the 3rd mode.
  • the other two spouts need not be formed in the divided region.
  • the flush toilet of the fifth aspect of the first invention is the flush toilet according to any one of the first to fourth aspects, wherein the rim portion is formed to extend from one of the three water outlets to one side in the circumferential direction. It has a rim waterway, and the water discharge part has the same size relationship of the amount of washing water discharged from each of the three water outlets as the size relationship of the inner peripheral lengths of the three rim water channels connected to each of the three water outlets. You may be comprised so that it may become. According to this aspect, it is possible to flow a large amount of washing water through the rim conduit having a long inner circumference, and it is easy to allow a sufficient amount of washing water to reach the entire rim conduit.
  • the amount of cleaning water used in the rim conduit can be suppressed by flowing a small amount of cleaning water in the rim conduit having a short inner peripheral length. For this reason, it is easy to suppress the amount of cleaning water used for cleaning the entire inner peripheral surface of the rim part, while obtaining a sufficient amount of cleaning water to reach the entire inner peripheral surface of the rim part and obtaining a good rim cleaning ability. it can.
  • the water discharger is configured so that the amount of the wash water discharged from each of the three water discharge ports is large and small. You may comprise so that the magnitude relationship of each opening area may become the same.
  • a flush toilet according to a seventh aspect of the first invention is the flush toilet according to any one of the first to sixth aspects, wherein the three spouts are divided areas on one side in the circumferential direction of the two divided areas on the front side. Each of the two rear divided regions may be formed individually.
  • the small water transmitted along the inner peripheral surface region is difficult to enter from the spout to the back side. . Therefore, the possibility that urine components remain on the back side of the spout can be suppressed, and the generation of dirt and odor can be prevented accordingly.
  • the flush toilet of the eighth aspect of the first invention is the flush toilet according to any one of the first to seventh aspects, wherein one of the three water outlets is circumferential in the two divided areas on the front side.
  • the water discharge portion has a water passage that supplies cleaning water to one water outlet, and the water passage is one of the side portions on the left and right sides of the rim portion in the circumferential direction. You may form so that it may extend along the front-back direction in the back side of the side part of the side with a side division area.
  • the water passage can be arranged in a layout that does not pass through the back side of the left and right center position on the front side of the rim portion.
  • the eighth aspect at the downstream end of the water passage, there is a folded portion that circulates the washing water supplied from the upstream side so as to be led to one outlet.
  • One spout is formed partly by two wall portions adjacent in the radial direction of the toilet bowl portion, and the circumferential end portions of the two wall portions are on a virtual line extending from the center point of the toilet bowl portion. It may be arranged to line up.
  • the flush toilet according to the tenth aspect of the first invention is the drainage apparatus according to any one of the first to ninth aspects, wherein the toilet body communicates with the inside of the toilet bowl through an inlet formed at the bottom of the toilet bowl.
  • the three water outlets include a first water outlet formed in any one of the divided areas and a second water outlet formed in the front divided area;
  • the cleaning water discharged from the first water outlet and the cleaning water discharged from the second water outlet may be joined to form a main flow toward the inlet.
  • the main flow toward the inlet of the drainage passage portion is formed by joining the wash water discharged from the first water discharge port and the wash water discharged from the second water discharge port.
  • the path through which the wash water flows from the second water discharge port to the inlet of the drainage passage can be made shorter than that provided in the rear divided region.
  • the mainstream water formed by the wash water discharged from the second outlet becomes stronger, and the sewage in the toilet bowl is pushed to the entrance of the drainage passage by the mainstream of strong water, so that good filth discharge performance is achieved. It will be obtained.
  • the flush toilet of the twelfth aspect of the first invention is the eleventh aspect, wherein the first water outlet, the second water outlet, and the third water outlet are sequentially disposed in one of the circumferential directions, and the water outlet is the first water outlet.
  • the washing water discharge amount of the sum total of the 2nd spout may be comprised so that it may be larger than the wash water discharge amount of the 3rd spout. According to this aspect, it can be expected that the amount of cleaning water more than half of the total amount of cleaning water used in one cleaning operation is used for forming the mainstream. Therefore, the flow rate of the main stream of strong water can be increased, and particularly good waste discharge performance can be obtained by pushing the filth in the toilet bowl to the entrance of the drainage passage by the main stream of strong water and large flow rate.
  • the flush toilet according to the thirteenth aspect of the first invention is characterized in that the water discharge portion is flushed from the second water outlet after the wash water is discharged from the first water outlet and the third water outlet. May be configured to be discharged.
  • Increasing the ratio of the main flow rate to the total amount of cleaning water used for a single cleaning operation can increase the waste discharge capacity without increasing the total amount of cleaning water.
  • the ratio of the main flow rate to the total amount of cleaning water can be increased. Therefore, the waste discharge performance can be enhanced by increasing the ratio of the main flow rate.
  • the flush toilet of the fourteenth aspect of the first aspect of the invention is any one of the tenth to thirteenth aspects, wherein the toilet bowl portion is a left-right center line that bisects the left-right dimension of the outer surface portion of the toilet body in plan view And the four divided regions divided by the front and rear center lines, and the second water discharge port may be formed in a divided region on one side in the circumferential direction among the two divided regions on the front side. According to this aspect, the wash water discharged from the second water discharge port can flow toward the entrance of the drainage passage portion without passing through the inner peripheral surface region at the left and right center position of the toilet bowl portion having a small curvature radius. become.
  • the main flow formed by the wash water discharged from the second water discharge port is less likely to weaken the water force due to the centrifugal force, and the second water discharge port is formed in the other divided region in the circumferential direction of the two front divided regions. Rather than doing so, it will be possible to obtain a better waste discharge capacity.
  • the flush toilet according to the fifteenth aspect of the first invention is the flush toilet according to any one of the tenth to fourteenth aspects, wherein the water discharger is a wash water discharged from the first water discharge port, and a wash water discharged from the second water discharge port.
  • the inner peripheral surface of the toilet bowl portion can be cleaned by the mainstream of strong water, and good toilet bowl cleaning performance can be obtained.
  • a toilet bowl body having a toilet bowl, a drainage passage communicating with the toilet bowl through an inlet formed at the bottom of the toilet bowl, and a water discharger for discharging washing water into the toilet bowl
  • the toilet bowl has a receiving surface for receiving filth, and a rim connected to the upper edge of the receiving surface
  • the water discharge portion has two water discharge ports formed in the rim portion, and discharges wash water from the two water discharge ports into the toilet bowl portion on one side in the circumferential direction
  • the toilet bowl portion has two divided regions that are divided by a front-rear center line that bisects the front-rear dimension of the inner surface portion of the toilet bowl portion in plan view,
  • the two spouts include a first spout formed in one of the two divided regions, and a second spout formed in the front divided region
  • the water discharge unit is configured to join the wash water discharged from the first water discharge port and the wash water discharged from the second water discharge port to form a main flow toward the inlet. Flush
  • Patent Document 2 a first flushing port is provided in the rear side of the toilet bowl part and one of the left and right sides, and a second flushing port is provided in the rear side of the toilet bowl part and the left and right side areas.
  • a toilet bowl has been proposed. In this flush toilet, the wash water discharged from each water outlet flows into the recess of the toilet bowl, and the accumulated water in the recess is stirred in the vertical direction. It is described that such agitation of the stored water in the recesses makes it possible to sink and discharge the filth in the recesses easily, and improve the filth discharge performance.
  • Patent Document 2 As a result of studying the structure of Patent Document 2, the present inventor has recognized the following problems.
  • the flush toilet of Patent Document 2 has a long path through which the wash water flows from each water outlet to the entrance of the drain pipe. Therefore, the wash water discharged from the water discharge port reaches the recessed portion in a state where the water force is relatively weakened. For this reason, there is a room for improvement in terms of filth discharge performance because the water flow for draining filth into the drainage pipe tends to be insufficient.
  • the invention described in the first item has been made in view of such a problem, and an object thereof is to provide a flush toilet capable of obtaining a good waste discharge capability.
  • FIG. 15 is a side sectional view of a flush toilet 300 according to the second embodiment
  • FIG. 16 is a plan view of the flush toilet 300
  • FIG. 17 is a top view of flush toilet 300 when cut along a horizontal plane along line AA in FIG.
  • the lateral direction of the flush toilet 300 is defined as the X axis
  • the longitudinal direction of the flush toilet 300 is defined as the Y axis
  • the height direction is defined as the Z axis.
  • the X axis positive direction is “right direction”
  • the X axis negative direction is “left direction”.
  • the left direction is the first direction
  • the other direction on the left and right is referred to as the second direction.
  • the left direction is the first direction and the right direction is the second direction.
  • the flush toilet 300 includes a toilet body 302 made of ceramic.
  • the toilet body 302 is a wall-mounted toilet that is attached in a state of being hung on the wall surface 210 of the toilet room.
  • a box containing a hot water cleaning device such as a local cleaning device, a toilet lid and a toilet seat that are rotatably supported by the box are disposed above the toilet body 302.
  • the toilet body 302 has a toilet bowl 310, a drainage pipe section 312, and a peripheral wall section 314.
  • the drainage pipe part 312 is formed in the lower part of the toilet bowl part 310.
  • the peripheral wall part 314 shields internal structures such as the toilet bowl part 310 and the drainage pipe part 312.
  • the drainage pipe part 312 forms a U-shaped sealing part 316e at the connection part with the toilet bowl part 310.
  • stagnant water is always stored, thereby blocking the odor of the drainage pipe portion 312.
  • the filth falling on the sealed water portion 316e is pushed out together with the staying water by the washing water.
  • the toilet bowl 310 is formed in an elliptical shape whose front-rear dimension is larger than the left-right dimension in plan view.
  • the toilet bowl 310 includes a bowl-shaped receiving surface 330 for receiving filth, a rim portion 308 that is connected to the upper edge of the receiving surface 330 and forms the upper edge of the toilet bowl 310, and the receiving surface 330.
  • a concave portion 316 formed to be depressed downward from the lower edge portion.
  • the receiving surface portion 330 is formed to incline with a downward slope toward the center side.
  • the concave portion 316 is formed in a bottomed shape, and an inlet of the sealing portion 316e is opened in the bottom portion 316k. A portion of the accumulated water is stored in the recess 316.
  • the recess 316 will be described later.
  • FIG. 19 is a diagram for explaining the central axis M1 of the recess 316 and the shape of the recess 316.
  • the concave portion 316 has a front end portion 316f corresponding to a vertex shared by the left and right sides when seen in a plan view.
  • a straight line extending in the front-rear direction by dividing the left-right range Lx of the recess 316 into two equal parts is denoted as a central axis M1.
  • a straight line that passes through the front end 316f and extends in the left-right direction is denoted as a straight line N1.
  • An intersection point of the central axis M1 and the straight line N1 is denoted as a point P.
  • a left end 220 a is located on the left standing wall 220 of the recess 316, and a right end 222 a is located on the right standing wall 222.
  • the front end portion 316f is located on the central axis M1.
  • the toilet bowl portion 310 has four divided regions Sr1 to Sr4 divided by the central axis M1 and the straight line N1 in a plan view.
  • the left divided region is the first divided region Sr1 and the right divided region is the fourth divided region Sr4 with respect to the central axis M1.
  • the left divided region is the second divided region Sr2 and the right divided region is the third divided region Sr3, which is the front side with respect to the straight line N1 and the central axis M1.
  • a first rim conduit 324a mainly provided on the left side, a second rim conduit 324b mainly provided on the right side, and mainly on the left rear are provided in the rim portion 308 .
  • Three water conduits of the third rim water conduit 324c are formed.
  • the three water conduits of the first rim water conduit 324a, the second rim water conduit 324b, and the third rim water conduit 324c are collectively referred to as “water conduit 324”.
  • the rim portion 308 has three water discharge ports, a first water discharge port 322a, a second water discharge port 322b, and a third water discharge port 322c.
  • the three water outlets of the first water outlet 322a, the second water outlet 322b, and the third water outlet 322c are collectively referred to as “water outlet 322”.
  • the water outlet 322 will be described later.
  • the water outlet 322 is formed in the water conduit 324 and opens toward the rim water passage 320 so as to be continuous with the rim water passage 320 described later.
  • the first water outlet 322a is provided at the downstream end of the first rim water conduit 324a
  • the second water outlet 322b is provided at the downstream end of the second rim water conduit 324b
  • the third water outlet 322c is the third rim water conduit 324c. At the downstream end.
  • the cleaning water supplied from the water supply pipe 304 that is a part of the cleaning water supply device is supplied to each of the rim water conduits 324 through the inflow passage 238a and the water conduit 238b.
  • the cleaning water supplied to the rim water conduit 324 is discharged from the water outlet 322 toward the rim water passage 320 described later.
  • the discharged wash water turns in the circumferential direction along the rim water passage 320.
  • the direction of turning in the circumferential direction of the cleaning water is simply referred to as “turning direction”.
  • a first rim water passage 320a, a second rim water passage 320b, and a third rim water passage 320c are formed in the rim portion 308 so as to extend from each of the three water outlets 322 in the circumferential direction of the toilet bowl portion 310. Is done.
  • the three rim water passages 320a, 320b, and 320c are collectively referred to as “rim water passage 320”.
  • the first rim water passage 320a extends in the circumferential direction from the first water outlet 322a to the vicinity of the second water outlet 322b on the downstream side in the turning direction.
  • the second rim water passage 320b extends in the circumferential direction from the second water outlet 322b to the vicinity of the third water outlet 322c on the downstream side in the turning direction.
  • the third rim water passage 320c extends in the circumferential direction from the third water outlet 322c to the vicinity of the first water outlet 322a on the downstream side in the turning direction.
  • the first rim water passage 320a, the second rim water passage 320b, and the third rim water passage 320c may be partially connected.
  • the rim water passage 320 is formed to swirl the cleaning water discharged from the water outlet 322.
  • the rim water passage 320 includes a shelf portion 326b extending from the upper end edge 326c of the receiving surface portion 330 toward the outside of the toilet bowl portion 310, and a side wall portion rising from the outer peripheral end portion of the shelf portion 326b. 326a, an overhang portion 318 extending from the upper end portion of the side wall portion 326a toward the inside of the toilet bowl 310, and a turning portion 332 that bends a part of the flow of the washing water inward.
  • the turning portion 332 will be described later.
  • each shelf 326b in the rim water passage 320 is formed smaller toward the downstream side as shown in FIG. With this configuration, the cleaning water discharged from the water discharge port 322 gradually flows down to the receiving surface portion 330 as it flows downstream.
  • An inner edge 318 a of the overhang portion 318 is formed so as to protrude inward from the upper end of the toilet bowl portion 310.
  • the upper surface of the overhang portion 318 is flattened so as to be a support surface of the toilet seat.
  • a rim water passage 320 serving as a path for the swirling water flow is formed.
  • the shape of the recess in plan view will be described. From the viewpoint of efficiently cleaning the standing wall of the recess with a small amount of cleaning water, it is advantageous that the area of the standing wall to be cleaned is small. Since the area of the standing wall is determined by the length of the contour of the peripheral edge of the concave portion in plan view and the height dimension of the vertical wall, the area of the vertical wall can be reduced by reducing the length of the contour of the peripheral edge of the concave portion. In other words, it is advantageous to make the length of the contour of the peripheral edge of the recess small to efficiently clean the recess.
  • the left and right dimensions and the front and rear dimensions of the recess be greater than a predetermined dimension.
  • a rectangular shape, an elliptical shape, a shape obtained by combining these in the front-rear direction, and a shape obtained by deforming them can be considered.
  • the contour length of the peripheral edge of the concave portion is shorter than that of a rectangle or an ellipse. Therefore, from the viewpoint of efficiently cleaning the standing wall of the concave portion, the outline of the peripheral edge of the concave portion is advantageous to be triangular.
  • the shape of the concave portion of the toilet bowl portion being substantially triangular means that each side constituting the triangle is constituted by a curve or a straight line having a curvature radius of 100 mm or more in a plan view.
  • the angles of the three corners can be formed as acute angles of 90 degrees or less in plan view.
  • FIG. 20 is an enlarged plan view showing the inner edge of the recess 316.
  • the recess 316 has a substantially triangular shape that is partitioned by three standing walls corresponding to the three sides of the triangle 230 with the bottom 230u positioned behind the left and right sides 230h and 230m in plan view.
  • the left standing wall 220 and the right standing wall 222 correspond to the left and right sides 230h and 230m, and the rear standing wall 224 corresponds to the bottom 230u.
  • the three standing walls of the left standing wall 220, the right standing wall 222, and the rear standing wall 224 are collectively referred to as “standing wall 226”.
  • the recess 316 includes a front end 316f corresponding to the vertex 230a shared by the left and right sides 230h and 230m, a left corner 316h corresponding to the left rear vertex 230c, and a right corner 316m corresponding to the right rear vertex 230b.
  • a front end 316f corresponding to the vertex 230a shared by the left and right sides 230h and 230m
  • a left corner 316h corresponding to the left rear vertex 230c
  • a right corner 316m corresponding to the right rear vertex 230b.
  • three corners including a front end portion 316f, a left corner portion 316h, and a right corner portion 316m are formed so as to pass through the three vertices of the triangle 230, respectively.
  • the three corners of the front end portion 316f, the left corner portion 316h, and the right corner portion 316m are collectively referred to as “corner portion 228”.
  • the radius of curvature of the front end portion 316f is excessively large, the water area in the concave portion 316 may turn without lowering, and in this case, the downward flow cannot be sufficiently formed and the discharge performance may be lowered. .
  • the radius of curvature of the front end portion 316f is excessively small, it may be difficult to release the material injected into the mold from the mold.
  • the concave portion 316 is formed in a curved line or a straight line in which the curvature radii of the left standing wall 220, the right standing wall 222, and the rear standing wall 224 are 100 mm or more.
  • the standing wall of the recess is a convex surface protruding inward in a plan view
  • the flow along the standing wall hardly collides with the corner.
  • the concave portion 316 is formed in a concave surface that bulges outward in a plan view.
  • the concave portion 316 is formed such that the curvature radius of the left standing wall 220, the right standing wall 222, and the rear standing wall 224 is larger than the curvature radius of the front end portion 316f.
  • the three water outlets 322 are individually formed in each of the three divided areas among the four divided areas Sr1 to Sr4.
  • the first water outlet 322a may be arranged in the first divided area Sr1, the second water outlet 322b in the third divided area Sr3, and the third water outlet 322c in the fourth divided area Sr4.
  • one of the first water outlet 322a and the second water outlet 322b may be disposed in the second divided region Sr2.
  • the three water discharge ports 322 can be arrange
  • the three water outlets 322 are formed such that the first water outlet 322a is formed on the left side of the concave portion 316 and the second water outlet 322b is formed in front of the concave portion 316.
  • a water discharge port 322 c is formed on the right side of the recess 316 and behind the rear standing wall 224.
  • the front end portion 316f of the recess 316 is located in a triangle connecting the three water outlets 322 in plan view. Further, the second water outlet 322b is located in the left-right range Lx of the recess 316, and the third water outlet 322c is located outside the left-right range Lx of the recess 316.
  • the three water outlets 322 surround the recess 316 in the circumferential direction, and the cleaning water can efficiently clean the recess 316.
  • each of the three water outlets discharges the cleaning water corresponding to each standing wall.
  • the three water outlets discharge water corresponding to the next vertical wall of the vertical wall closest to each water outlet in the direction in which the cleaning water flows. That is, in the flush toilet 300, the first water outlet 322a is provided corresponding to the right standing wall 222, the second water outlet 322b is provided corresponding to the rear standing wall 224, and the third water outlet 322c is provided on the left standing wall 220. Correspondingly provided.
  • the first main flow 362 of the first water discharge port 322a falls on the right standing wall 222
  • the first main flow 372 of the second water discharge port 322b falls on the rear standing wall 224
  • the third discharge The first main flow 382 of the water port 322c falls on the left standing wall 220.
  • the first mainstreams 362, 372, and 382 are configured to fall around the receiving surface portion 330 about a half and fall into the recess 316.
  • FIG. 21 is a diagram schematically illustrating how the wash water flows in the toilet bowl 310.
  • the wash water supplied from the water supply pipe 304 is supplied to the three rim water conduits 324 through the water conduit 238b.
  • the cleaning water 358, 368, and 378 supplied to the rim water conduit 324 is discharged from the water outlet 322 to the rim water passage 320, and the first main flow 362, 372, and 382 curved inward from the rim water passage 320, and the rim passage.
  • a second main flow 364, 374, 384 that swirls along the water channel 320.
  • the main flow of washing water means a main flow in which a large proportion of the washing water flows in the same manner, and a water discharge flow from one outlet may form a plurality of main flows.
  • a side wall portion 326a that is curved in an arc shape in plan view is formed so as to surround the concave portion 316. Due to the curved action of the side wall portion 326a, a water flow that is bent along the side wall portion 326a and turns in the circumferential direction is formed in the cleaning water.
  • the side wall portion 326a of the rim water passage 320 is provided with a turning portion 332 that bends inward a part of the flow of the washing water swirling in the circumferential direction along the side wall portion 326a.
  • the turning portion 332 bends a part of the flow of the cleaning water inward, separately from the bending action of the side wall portion 326a.
  • the turning portion 332 includes a first convex surface portion 334a, a second convex surface portion 334b, and a third convex surface portion 334c in which a part of the side wall portion 326a extends inward from both sides in the circumferential direction.
  • the first convex surface portion 334a, the second convex surface portion 334b, and the third convex surface portion 334c are collectively referred to as “convex surface portion 334”.
  • the convex surface portion 334 is provided in the rim water passage 320 on the downstream side of the water discharge port 322.
  • the first convex surface portion 334a is provided near the first water outlet 322a between the first water outlet 322a and the second water outlet 322b.
  • the second convex surface portion 334b is provided near the second water discharge port 322b between the second water discharge port 322b and the third water discharge port 322c.
  • the third convex surface portion 334c is provided between the third water outlet 322c and the first water outlet 322a so as to approach the third water outlet 322c.
  • FIG. 18 is a schematic diagram showing the periphery of the first convex surface portion 334a in an enlarged manner.
  • the outline 354a of the side wall portion when there is no convex surface portion is indicated by a broken line.
  • the guidance part 334as, the protrusion part 334at, and the downstream part 334au are formed in this order from the upstream.
  • the protrusion 334at is a portion that protrudes inward from the leading portion 334as and the downstream portion 334au on both sides thereof.
  • the washing water discharged from the first water discharge port 322a forms a first water flow 360.
  • the water flow 360s in the outer portion of the first water flow 360 collides with the leading portion 334as and flows inward along the leading portion 334as.
  • the water flow 360u in the inner portion of the first water flow 360 passes through the protrusion 334at without colliding with the leading portion 334as and swirls in the circumferential direction along the downstream portion 334au and the side wall portion 326a connected to the downstream portion 334au. .
  • the water flow 360s is drawn so as to intersect with the water flow 360u.
  • the water flow 360s and the water flow 360u are influenced by each other, and the desired first main flow 362 and the second main flow are obtained. 374.
  • the first convex surface portion 334a can form a water flow 360s that swirls from the first water flow 360 and a water flow 360u that curves inward from the swirling water flow 360s.
  • the shape of the first convex surface portion 334a to give the water flow 360s and the water flow 360u with a desired amount of water, water flow, and direction, the first main flow 362 and the second main flow 374 can be generated.
  • action are the same as that of FIG. 18 used about the 1st convex surface part 334a, and description, The overlapping description is abbreviate
  • the flow of the cleaning water can be precisely controlled by providing the turning portion 332.
  • the position of the mainstream direction change can be determined, it is difficult to be influenced by the shape of the shelf portion 326b of the rim portion 308 and the shape of the toilet bowl portion 310, and it is easy to form a target washing water flow. Become.
  • the first main flow 362 falls toward the right standing wall 222 while widely washing the receiving surface portion 330, flows along the right standing wall 222, and collides with the right corner portion 316m.
  • the first main flow 362 that has collided forms an upward flow with the downward flow 362 a and changes its direction in the recess 316 to form a lateral flow that flows along the rear wall 224.
  • the first main flow 362 flowing in the rear wall 224 joins a first main flow 372 described later to form a vortex 388 that turns counterclockwise.
  • the water falling toward the right standing wall 222 may include a part of water discharged from another water outlet.
  • the first main flow 362 flows along the right standing wall 222 to effectively clean the wall surface.
  • the first main flow 362 effectively cleans the corner by colliding with the right corner 316m.
  • the first main flow 362 flows along the rear wall 224 to effectively clean the wall surface.
  • the first main flow 362 promotes the discharge of filth from the sealed water portion 316e to the drainage pipe portion 312 by forming a downward flow 362a.
  • the washing water 368 supplied to the second rim water conduit 324b is discharged from the second water outlet 322b to the second rim water passage 320b to form a second water flow 370.
  • the second water flow 370 forms a first main flow 372 that curves inward from the second rim water passage 320b and a second main flow 374 that swirls along the second rim water passage 320b.
  • the first main flow 372 falls toward the rear wall 224 while washing the receiving surface 330 widely, flows along the rear wall 224, and collides with the left corner 316h.
  • the first main flow 372 that has collided forms an upward flow with the downward flow 372a, and forms a lateral flow that flows along the left standing wall 220 while turning counterclockwise within the recess 316.
  • the first main flow 372 flowing in the left standing wall 220 joins a first main flow 382 described later to form a vortex 388 that turns counterclockwise.
  • the water falling toward the rear wall 224 may include a part of water discharged from another water outlet.
  • the first main flow 372 flows along the rear wall 224 to effectively clean the wall surface.
  • the first main flow 372 effectively cleans the corner by colliding with the left corner 316h.
  • the first main flow 372 flows along the left standing wall 220 to effectively clean the wall surface.
  • the first main flow 372 forms a downward flow 372a, thereby forming a vertical swirl in the vortex 388, and promoting the discharge of filth from the sealed water portion 316e to the drainage pipe portion 312.
  • the washing water 378 supplied to the third rim water conduit 324c is discharged from the third water outlet 322c to the third rim water passage 320c to form a third water flow 380.
  • the third water flow 380 forms a first main flow 382 that curves inward from the third rim water passage 320c and a second main flow 384 that swirls along the third rim water passage 320c.
  • the first main flow 382 falls toward the left standing wall 220 while widely washing the receiving surface portion 330, flows along the left standing wall 220, and collides with the front end portion 316f.
  • the first main flow 382 that has collided forms an upward flow with the downward flow 382 a, and also forms a lateral flow that flows along the right standing wall 222 by turning counterclockwise within the recess 316.
  • the first main flow 382 flowing through the right standing wall 222 joins the first main flow 362 to form a vortex 388 that turns counterclockwise.
  • the water falling toward the left standing wall 220 may include a part of water discharged from another water outlet.
  • the first main flow 382 flows along the left standing wall 220 to effectively clean the wall surface.
  • the first main flow 382 collides with the front end portion 316f to effectively clean the corner portion.
  • the first main flow 382 flows along the right standing wall 222 to effectively clean the wall surface.
  • the first main flow 382 forms a downward flow 382a, thereby forming a vertical swirl in the vortex 388 and promoting discharge of filth from the sealed water portion 316e to the drainage pipe portion 312.
  • the filth is strongly collected at the center of the sealed portion 316e and discharged from the drain pipe portion 312 (see also FIG. 15).
  • the first main flow 362, the first main flow 372, and the first main flow 382 flow downward in the left standing wall 220, the right standing wall 222, and the rear standing wall 224, thereby forming a vertical swirl in the vortex 388, and The discharge from the sealed water part 316e to the drainage pipe part 312 is promoted.
  • FIG. 22 is a diagram schematically showing a main range in which the wash water flows in the toilet bowl 310.
  • the second main flow 364 turns along the first rim water passage 320a and overlaps with the second water flow 370 discharged from the second water discharge port 322b.
  • the second main flow 374 turns along the second rim water passage 320b and overlaps with the third water flow 380 discharged from the third water discharge port 322c.
  • the second main flow 384 turns along the third rim water passage 320c and overlaps the first water flow 360 discharged from the first water outlet 322a.
  • the second main flow 364, 374, 384 (see also FIG. 21). ) Gradually falls to the receiving surface 330 while turning, and forms sheet-like falling water streams 390, 392, 394 toward the recesses 316.
  • the falling water flow 390, 392, 394 widely cleans the receiving surface portion 330 while flowing in the form of a film on the surface of the receiving surface portion 330.
  • the falling water streams 390, 392, and 394 are separated from the first main streams 362, 372, and 382. However, the falling water streams 390, 392, and 394 are separated from the first main streams 362, 372, and 382. Some washed water is also included.
  • the falling water stream 390 forms a region 396 that overlaps the falling water stream 392
  • the falling water stream 392 forms a region 398 that overlaps the falling water stream 394
  • the falling water stream 394 forms a region 400 that overlaps the falling water stream 390.
  • the overlapping region 400 is formed with a water flow that rises in a streak shape and flows down the receiving surface 330.
  • the shape of the toilet bowl 310 is configured such that each of the washing water discharged from the three water discharge ports 322 forms such first main flows 362, 372, and 382.
  • the first main flows 362, 372, and 382 are those that fall toward the three standing walls 220, 222, and 224 and flow along the standing walls 220, 222, and 224.
  • the shape of the toilet bowl 310 is configured such that the first mainstreams 362, 372, and 382 join in the region of the recess 316 (in the recess 316).
  • the shape of the toilet bowl 310 is configured such that each of the wash water discharged from the three water discharge ports 322 forms such second main flows 364, 374, and 384.
  • Such second main flows 364, 374, and 384 flow along the inner peripheral surface of the rim portion 308, and turn in the swiveling direction (counterclockwise direction in the drawing) with respect to each of the three water discharge ports 322. It overlaps with the wash water discharged from the other water discharge port 322 adjacent to the water discharge port 322.
  • the shape of the toilet bowl 310 includes the rim 308, the receiving surface 330, the recess 316, and the water outlets 322.
  • the shapes of the rim portion 308, the receiving surface portion 330, and the concave portion 316 include these curvatures and gradients.
  • flush toilet 300 a predetermined amount of flush water is supplied from the water supply pipe 304 to the water conduit 324 through the inflow channel 238a and the water conduit 238b by operation of operation members such as a predetermined switch and lever.
  • the supplied wash water is discharged from the water discharge port 322 toward the water passage 320, and the sewage in the toilet bowl 310 is pushed to the sealing part 316e below the recess 316 using a drop of the wash water, and the toilet bowl
  • the inside of the part 310 is washed widely.
  • the second mainstream can wash the rim portion 308 to the receiving surface portion 330 widely, and the toilet bowl portion 310 can be washed evenly.
  • the concave portion is circular or has a polygonal shape having four or more sides, a strong swirl vortex can be formed in the concave portion, but the downward flow becomes weak, which is disadvantageous for waste discharge.
  • the concave portion 316 is defined by three standing walls corresponding to each side of the triangle, the downward flow can be strengthened to effectively discharge filth. Further, the flow of lateral turning can be weakened to suppress the vortex 388.
  • the flush toilet 300 is formed in a range in which the interval between the three water discharge ports 322 is not less than a quarter circumference and not more than a half circumference, the unevenness of the water flow is suppressed and a good washing ability can be obtained.
  • the cleaning power of the standing wall of the recess may be biased.
  • the first water outlet 322a is provided on the left side of the concave portion 316 and the second water outlet 322b is provided in front of the concave portion 316 so as to surround the concave portion 316. Since the 322c is provided behind the recess 316, the uneven cleaning power of the standing wall of the recess 316 can be suppressed.
  • the water outlet 322 falls toward the vertical wall 226 and discharges the first main flows 362, 372, and 382 that flow along the vertical wall 226.
  • the standing wall 226 can be cleaned effectively.
  • the first main flow 362 is the first main flow 382
  • the first main flow 382 is the first main flow 372
  • the first main flow 372 is the first main flow 362. Since it merges, the influence on the water force and direction at the time of the fall to the recessed part 316 can be suppressed.
  • the wash water may not flow sufficiently and the cleaning power may be insufficient.
  • the second main flows 364, 374, and 384 flow in the circumferential direction along the side wall portion 326a of the rim water passage 320, respectively, and out of the three water outlets 322 on the swivel side. Since it is configured to overlap with the wash water discharged from the water port 322, the lack of water flow at the boundary portion of the mainstream is suppressed, and the toilet bowl 310 can be washed widely and satisfactorily.
  • the overall shape of the toilet bowl is changed in order to realize a desired water flow in the washing water, other performance may be impaired, which is a restriction for realizing the desired water flow.
  • the rim water passage 320 is provided with the turning portion 332 that bends a part of the flow of the washing water inward, the turning portion is separate from the bending action of the side wall portion 326a. By providing 332, the flow of washing water can be changed to approach the desired flow.
  • the change-over portion 332 has a convex surface portion 334 in which a part of the side wall portion 326a projects inward from both sides in the circumferential direction, so that the change in the shape of the shelf portion 326b and the toilet bowl portion 310 is minimized. To the limit.
  • the flush toilet 300 has been described with an example of using the wash-off method as the cleaning method, the inside of the toilet bowl 310 may be cleaned by a cleaning method combined with another method such as a siphon type or a siphon set type.
  • the flush toilet 300 has been described as an example using a water supply direct pressure system as a water supply system, other water supply systems such as a gravity water supply system using gravity and a flash valve system may be used.
  • the toilet main body 302 has been described by taking a wall-mounted toilet as an example, it may be a floor-standing toilet installed on the floor surface of a toilet room.
  • the toilet body 302 may be made of resin or the like in addition to pottery.
  • the present invention is not limited to this.
  • it may be configured to generate a clockwise water flow by switching the left and right.
  • SYMBOLS 10 Flush toilet bowl, 12 ... Toilet body, 14 ... Toilet bowl part, 16 ... Entrance, 20 ... Drainage passage part, 26 ... Receiving surface part, 28 ... Rim part, 28L ... Left side part, 28R ... Right side part, 32A ... 1st water outlet, 32B ... 2nd water outlet, 32C ... 3rd water outlet, 36 ... Water discharge part, 38b ... Right side water passage (first water passage) 38c ... Left side water passage (second water passage), Sr1 ⁇ Sr4: divided area, La: left-right center line, Lb: front-rear center line. 210 ... Wall surface, 220 ... Right standing wall, 222 ...
  • the present invention relates to a flush toilet.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

Le dispositif selon la présente invention est pourvu d'un corps de toilettes (12) comprenant une cuvette de toilettes (14) et un robinet à bec (36) pour décharger de l'eau de chasse dans la cuvette de toilettes (14). La cuvette de toilettes (14) présente une partie de surface de réception (26) pour recevoir les excréments, et une partie de rebord (28) reliée au bord d'extrémité supérieure (26a) de la partie de surface de réception (26). Le robinet à bec (36) présente trois ports de robinet à bec (32A à 32C) formés dans la partie de rebord (28), le robinet à bec (36) évacuant l'eau de chasse le long d'une direction circonférentielle à partir des trois ports de robinet à bec (32A à 32C) le long de la surface périphérique interne de la partie de rebord (28). La cuvette de toilettes (14) présente quatre régions segmentées (Sr1 à Sr4) qui sont divisées, en vue en plan, par un axe central gauche-droite qui coupe en deux parties égales la dimension gauche/droite de la partie de surface externe du corps des toilettes (12) et un axe central avant-arrière qui coupe en deux parties égales les dimensions avant/arrière de la partie de surface interne de la cuvette des toilettes (14). Les trois ports de robinet à bec (32A à 32C) sont formés individuellement dans chacune de trois régions segmentées parmi les quatre régions segmentées (Sr1 à Sr4).
PCT/JP2016/069766 2015-07-08 2016-07-04 Dispositif de chasse d'eau de toilettes WO2017006903A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16821372.6A EP3321438B1 (fr) 2015-07-08 2016-07-04 Dispositif de chasse d'eau de toilettes
CN201680036606.8A CN107709676B (zh) 2015-07-08 2016-07-04 抽水马桶

Applications Claiming Priority (6)

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JP2015137258A JP6548487B2 (ja) 2015-07-08 2015-07-08 水洗大便器
JP2015-137259 2015-07-08
JP2015-137258 2015-07-08
JP2015137259A JP2017020213A (ja) 2015-07-08 2015-07-08 水洗大便器
JP2015179523A JP6495146B2 (ja) 2015-09-11 2015-09-11 水洗大便器
JP2015-179523 2015-09-11

Publications (1)

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WO2017006903A1 true WO2017006903A1 (fr) 2017-01-12

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EP (1) EP3321438B1 (fr)
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EP3216929A1 (fr) * 2016-03-09 2017-09-13 Toto Ltd. Chasse d'eau
JP2017160670A (ja) * 2016-03-09 2017-09-14 Toto株式会社 水洗大便器
EP3486384A1 (fr) 2017-11-17 2019-05-22 Villeroy & Boch AG Toilettes à chasse d'eau
RU2740155C1 (ru) * 2019-03-07 2021-01-12 Дуравит Акциенгезелльшафт Санитарный объект в виде унитаза
JP2021036130A (ja) * 2020-12-03 2021-03-04 Toto株式会社 水洗大便器
JP2022174250A (ja) * 2019-12-02 2022-11-22 Toto株式会社 水洗大便器

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JP7151685B2 (ja) * 2019-09-30 2022-10-12 Toto株式会社 水洗大便器
JP7176580B2 (ja) 2021-02-26 2022-11-22 Toto株式会社 水洗大便器
EP4130407A1 (fr) * 2021-08-04 2023-02-08 Geberit International AG Wc pourvus de cuvette de forme intérieure spécifique
TWI830487B (zh) * 2022-11-08 2024-01-21 全球旺科技股份有限公司 智慧型螺旋沖水馬桶

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3216929A1 (fr) * 2016-03-09 2017-09-13 Toto Ltd. Chasse d'eau
JP2017160670A (ja) * 2016-03-09 2017-09-14 Toto株式会社 水洗大便器
US10151094B2 (en) 2016-03-09 2018-12-11 Toto Ltd. Flush toilet having a rim spout with a rim water passageway
EP3486384A1 (fr) 2017-11-17 2019-05-22 Villeroy & Boch AG Toilettes à chasse d'eau
DE102018121465A1 (de) 2017-11-17 2019-05-23 Villeroy & Boch Ag Spültoilette
EP3951110A1 (fr) 2017-11-17 2022-02-09 Villeroy & Boch AG Toilettes à chasse d'eau
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RU2740155C1 (ru) * 2019-03-07 2021-01-12 Дуравит Акциенгезелльшафт Санитарный объект в виде унитаза
JP2022174250A (ja) * 2019-12-02 2022-11-22 Toto株式会社 水洗大便器
JP7393727B2 (ja) 2019-12-02 2023-12-07 Toto株式会社 水洗大便器
JP2021036130A (ja) * 2020-12-03 2021-03-04 Toto株式会社 水洗大便器
JP7109745B2 (ja) 2020-12-03 2022-08-01 Toto株式会社 水洗大便器

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EP3321438A4 (fr) 2019-03-27
EP3321438B1 (fr) 2020-11-11
EP3321438A1 (fr) 2018-05-16
CN107709676A (zh) 2018-02-16
CN107709676B (zh) 2020-02-21

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