WO2017026202A1 - Flush toilet device - Google Patents

Flush toilet device Download PDF

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Publication number
WO2017026202A1
WO2017026202A1 PCT/JP2016/069767 JP2016069767W WO2017026202A1 WO 2017026202 A1 WO2017026202 A1 WO 2017026202A1 JP 2016069767 W JP2016069767 W JP 2016069767W WO 2017026202 A1 WO2017026202 A1 WO 2017026202A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
rim
jet
passage
toilet bowl
Prior art date
Application number
PCT/JP2016/069767
Other languages
French (fr)
Japanese (ja)
Inventor
康宏 近藤
幸満 稲毛
光 松原
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 JP2015158962A external-priority patent/JP6584856B2/en
Priority claimed from JP2015158963A external-priority patent/JP6389150B2/en
Application filed by 株式会社Lixil filed Critical 株式会社Lixil
Priority to CN201680044823.1A priority Critical patent/CN107849841B/en
Priority to EP16834899.3A priority patent/EP3336267A4/en
Priority to EP20157069.4A priority patent/EP3670771A1/en
Publication of WO2017026202A1 publication Critical patent/WO2017026202A1/en

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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00Other 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
    • E03D11/02Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00Other 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
    • E03D11/02Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • E03D11/08Bowls with means producing a flushing water swirl
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00Other 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
    • E03D11/13Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D2201/00Details and methods of use for water closets and urinals not otherwise provided for
    • E03D2201/30Water injection in siphon for enhancing flushing
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D2201/00Details and methods of use for water closets and urinals not otherwise provided for
    • E03D2201/40Devices for distribution of flush water inside the bowl

Definitions

  • the present invention relates to a flush toilet.
  • a jet outlet may be formed in the toilet bowl of the toilet as an opening for discharging the wash water.
  • the rim spout is formed in the rim portion of the toilet bowl, and the entire toilet bowl is washed with the wash water discharged from the rim spout.
  • the jet outlet is formed at the bottom of the toilet bowl, and a water flow for promoting the discharge of filth is formed by the washing water discharged from the jet outlet.
  • Patent Document 1 includes a jet discharge port formed at a position higher than the highest water level stored in the bottom of the toilet bowl, and a wash water supply path for supplying wash water to the jet discharge port.
  • a toilet bowl is disclosed.
  • a swirl flow swirling around the horizontal axis is formed by the wash water discharged from the jet discharge port. It is described that sewage can be fed into the trap portion by this swirl flow, and sewage can be effectively discharged.
  • the 1st invention is made in view of such a subject, and the object is to provide the flush toilet which can prevent the fall of the appearance in the toilet bowl part resulting from toilet bowl washing.
  • a jet discharge hole may be formed in addition to the rim water discharge hole as an opening for discharging wash water.
  • the rim water spouting hole is formed in the rim part of the toilet bowl part, and the entire toilet bowl part is washed with the washing water discharged from the rim water spouting hole.
  • the jet discharge hole is formed at the bottom of the toilet bowl, and a water flow for promoting the discharge of filth is formed by the wash water discharged from the jet discharge hole.
  • FIG. 1 of Patent Document 1 discloses a toilet in which a rim water passage is formed on the outer peripheral side of the rim portion, and a jet communication passage that branches off from a middle position of the rim water passage is formed.
  • This toilet has a structure in which the cleaning water supplied to the rim water passage is discharged from the rim water discharge hole and discharged from the jet discharge hole through the jet communication passage.
  • the water inlet of the jet communication passage opens at a midway position along the path from the start side to the end side of the rim water passage. Therefore, the cleaning water in the rim water passage can easily flow toward the rim water discharge hole without changing the flow direction to the jet communication passage. For this reason, there is a problem that it is difficult to take in the cleaning water from the rim water passage to the jet communication passage, and the momentum of the cleaning water discharged from the jet discharge hole is weak.
  • two right and left rim water passages are formed on the outer peripheral side of the rim portion, one rim water passage is formed with a rim water discharge hole, and the other rim passage is formed. It is also conceivable that the water channel is structured to communicate with the jet communication passage.
  • a plurality of rim water discharge holes are formed in the rim portion, and the cleaning water supplied to each of the two rim water passages is discharged from separate rim water discharge holes.
  • the toilet of Patent Document 1 has only a single rim water discharge hole formed in the rim portion, and it is not assumed that there are a plurality of such rim water discharge holes.
  • the toilet bowl of patent document 1 is not what devised so that a wash water could be spit out vigorously from a jet discharge hole, providing such a some rim water discharge hole.
  • the second invention is made in view of such a problem, and an object thereof is to provide a flush toilet capable of expelling wash water from the discharge holes while expelling wash water from the rim water discharge holes through the right and left rim water passages. There is to do.
  • the first aspect of the first invention for solving the above problems is a flush toilet.
  • the flush toilet is a stool part, a trap part that is connected to the bottom part of the stool part and determines the level of non-washed water stored in the bottom part, and a jet outlet formed in the bottom part, A jet water supply channel for supplying cleaning water to the jet discharge port, and a water discharge unit that forms a water flow in the bottom by discharging the wash water from the jet discharge port, The jet discharge port is formed so as to straddle the level of the stored water when not washed.
  • “Non-cleaning” here means when the toilet bowl is in a standby state before starting cleaning.
  • the lower part of the jet discharge port is submerged in the stored water at the time of non-cleaning. Therefore, it becomes easy to join the water discharged from the jet outlet after flushing the toilet bowl to the stored water without passing along the inner surface of the toilet bowl. For this reason, after toilet bowl washing
  • the first aspect of the second invention for solving the above problem is a flush toilet.
  • the flush toilet is formed on the outer rim portion of the rim portion, the toilet rim portion having the rim portion formed on the upper end portion, the first rim water passage on the left and right sides formed on the outer peripheral side of the rim portion, and the rim portion.
  • a second rim water discharge hole a discharge hole formed in a bottom portion of the toilet bowl portion or a drainage passage portion connected to the bottom portion, a communication passage communicating the first rim water passage and the discharge hole
  • the first rim water discharge hole is formed by branching from a middle position of the path from the start end side to the terminal end side of the first rim water passage, and the water inlet of the communication path is the first It opens to the terminal side of the first rim water passage from the rim water discharge hole.
  • the wash water that has flowed to the end portion of the first rim water passage has only to change the flow direction from there, and can be easily introduced into the water introduction port in the vicinity thereof by changing the flow direction. Therefore, it becomes easy to take in the washing water from the first rim water passage to the communication passage, and it becomes easy to discharge the high-pressure washing water from the discharge hole.
  • the cleaning water can be discharged from the discharge holes vigorously while supplying the cleaning water to the right and left rim water passages and discharging the cleaning water from the plurality of rim water discharge holes.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • FIG. 3 is a sectional view taken along line BB in FIG.
  • FIG. 3 is a cross-sectional view taken along the line CC of the toilet bowl portion of FIG. 2.
  • FIG.5 (a) shows the state before the start of toilet bowl washing
  • FIG.6 (a) shows the state before the start of toilet bowl washing
  • FIG.6 (b) shows toilet bowl washing
  • An intermediate state is shown
  • FIG. 6C shows a further intermediate state.
  • FIG. 18A is a view showing the left rim water passage according to the first modified example
  • FIG. 18B is an explanatory view concerning the throttle portion. It is explanatory drawing regarding the aperture
  • FIG. 1 is a plan view of a flush toilet 10 according to the first embodiment.
  • 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.
  • the toilet main body 12 includes a toilet bowl 14 formed at the front of the toilet main body 12 and a trap 18 connected to the bottom of the toilet bowl 14.
  • the trap portion 18 communicates with the stool portion 14 through an inlet 16 (see also FIG. 1) formed at the bottom of the stool portion 14.
  • the toilet bowl portion 14 is formed with a bowl-shaped receiving surface portion 20 for receiving filth and a recess recessed downward from the lower edge portion of the receiving surface portion 20, and the toilet bowl portion 14.
  • a recess 22 that forms the bottom, and a rim 24 that is connected to the upper edge of the receiving surface 20 and forms the upper end of the toilet bowl 14 are provided.
  • the receiving surface portion 20 is formed in an elliptical shape whose front and rear dimensions are larger than the left and right dimensions in plan view.
  • the concave portion 22 is formed in a bottomed cylindrical shape, and the inlet 16 of the trap portion 18 opens at the bottom surface portion thereof.
  • the toilet body 12 further includes a water discharge portion 26 for discharging the wash water into the toilet bowl portion 14.
  • the water discharge portion 26 has a jet discharge port 28 formed in the recess 22 of the toilet bowl portion 14 and two rim water discharge ports 30A and 30B formed in the rim portion 24 of the toilet bowl portion 14.
  • the water discharge part 26 forms the water flow for promoting discharge
  • the water discharge part 26 forms the water flow for wash
  • the flush toilet 10 has one of the main features in the water discharge part 26, especially the jet discharge port 28, it demonstrates from a periphery structure first.
  • the trap unit 18 includes a first water channel unit 32, a second water channel unit 34, and a third water channel unit 36 in order from the upstream side to the downstream side.
  • the first water channel portion 32 is formed so as to descend from the inlet 16 of the trap portion 18.
  • the second water channel portion 34 is formed so that the upstream end portion is connected to the downstream end of the first water channel portion 32 in the rear and rises from the upstream end portion.
  • the third water channel portion 36 is formed such that the upstream end portion is connected to the downstream end of the second water channel portion 34 rearward and extends rearward from the upstream end portion.
  • a drain pipe 102 is connected to the downstream end of the third water channel portion 36, and filth is discharged to the sewage side water channel through the trap unit 18 and the inside of the drain tube 102.
  • Sealed water 38 that blocks the flow of air in the direction of water flow is stored in the trap unit 18 inside the first water channel unit 32 and the second water channel unit 34. Odor reverse flow from the sewage side channel is prevented by the sealing water 38.
  • a bent portion 40 is formed at the boundary portion between the second water channel portion 34 and the third water channel portion 36 to change the water flow direction of water passing through the inside.
  • the upper end edge 42 of the inner wall surface disposed inside the bent portion 40 is an overflow edge (hereinafter referred to as “overflow edge 42”) that determines the water level when the sealing water 38 in the trap portion 18 is not washed.
  • overflow edge 42 an overflow edge that determines the water level when the sealing water 38 in the trap portion 18 is not washed.
  • “at the time of non-washing” refers to a time when the toilet bowl 14 is in a standby state before starting washing.
  • a part of the sealing water 38 in the trap part 18 is stored as the stored water 44 at the bottom of the toilet bowl part 14.
  • the water level WL1 when the stored water 44 is not washed (hereinafter referred to as the initial water level WL1) is determined according to the position of the overflow edge 42 in the vertical direction, similar to the sealed water 38.
  • the rim portion 24 has two rims extending from each of the two rim spouts 30 ⁇ / b> A and 30 ⁇ / b> B to one side in the circumferential direction of the stool portion 14 (counterclockwise direction in this figure).
  • a water conduit 48 is formed.
  • the rim water channel 48 is for guiding the cleaning water discharged from the rim water outlets 30 ⁇ / b> A and 30 ⁇ / b> B to swivel so that the cleaning water can reach the rim water channel 48 from the start end position to the end position.
  • the water discharge unit 26 has an inflow port 54, a right rim water passage 56A (first water passage), and a left rim water passage 56B (second water passage).
  • a water supply channel) and a jet water supply channel 58 are illustrated in FIG. 1 and FIG. 1
  • the two rim spouts 30A and 30B include a right rim spout 30A (first spout) and a left rim spout 30B (second spout).
  • the right rim water spouting port 30 ⁇ / b> A is arranged on the right side with respect to the left-right center line CL of the toilet body 12 and at an intermediate position in the front-rear direction of the toilet bowl 14.
  • the left rim spout 30 ⁇ / b> B is disposed on the left side with respect to the left-right center line CL of the toilet body 12 and is disposed at the rear of the toilet bowl 14.
  • the left-right center line CL is a straight line extending in the front-rear direction by equally dividing the left-right dimension of the outer surface portion of the toilet body 12. Wash water is spouted from the two rim spouts 30 ⁇ / b> A and 30 ⁇ / b> B toward one side in the circumferential direction along the inner peripheral surface of the rim portion 24.
  • cleaning water supplied from a water supply pipe 104 a that is a part of the cleaning water supply device 104 flows into the inlet 54.
  • FIG. 3 the water flow path Wp of the wash water flowing into the water discharge section 26 from the water supply pipe 104a through the inlet 54 is shown.
  • the right rim water passage 56 ⁇ / b> A and the left rim water passage 56 ⁇ / b> B are for branching the wash water flowing in from the inflow port 54.
  • the washing water flowing through the right rim water passage 56A is supplied to the right rim water outlet 30A
  • the washing water flowing through the left rim water passage 56B is supplied to the left rim water outlet 30B.
  • a branch position 60 that is a branch source of the right rim water passage 56A and the left rim water passage 56B is disposed at the rear and back side of the rim portion.
  • the right rim water passage 56 ⁇ / b> A is formed to extend from the branch position 60 to one side (counterclockwise direction) in the circumferential direction on the back side of the rim portion 24.
  • a right rim water outlet 30A is formed at the downstream end of the right rim water passage 56A.
  • the left rim water passage 56 ⁇ / b> B is formed to extend from the branch position 60 to the other side (clockwise direction) in the circumferential direction on the back side of the rim portion 24.
  • the left rim water passage 56 ⁇ / b> B is formed such that the end in the extending direction becomes a dead end.
  • a branch water passage 62 is formed in the middle of the left rim water passage 56B so as to extend to one side in the circumferential direction (counterclockwise direction) and radially inward.
  • a left rim spout 30 ⁇ / b> B is formed at the downstream end of the branch water channel 62.
  • the water supply channel 58 for jets is connected to the tip of the left rim water channel 56B as shown in FIGS.
  • the jet water supply channel 58 is for supplying cleaning water to the jet discharge port 28.
  • An inlet 64 for introducing cleaning water into the jet water supply path 58 is formed on the inner bottom surface of the left rim water passage 56B.
  • the jet water supply path 58 is formed so as to connect the introduction port 64 and the jet discharge port 28.
  • the jet water supply channel 58 includes a first portion 58a extending downward from the introduction port 64, and a downstream side of the first portion 58a on the other side in the circumferential direction (clockwise direction in the figure) and downward. And a second portion 58b that extends while being bent.
  • the second portion 58 b extends while bending from the back side of the side portion of the toilet bowl portion 14 to the back side of the jet discharge port 28.
  • the jet water supply path 58 further includes a third portion 58c extending rearward from the downstream end portion of the second portion 58b toward the jet discharge port 28.
  • the jet discharge port 28 is formed on the wall surface on the left side and the front side of the recess 22 of the toilet bowl 14. From the jet discharge port 28, the wash water is directed toward one side in the circumferential direction (clockwise direction) in the concave portion 22 of the toilet bowl 14, similarly to the discharge direction of the wash water from the two rim water discharge ports 30A, 30B. Is exhaled. Wash water is discharged from the jet outlet 28 along the horizontal direction.
  • “to be along the horizontal direction” includes both the case where the discharge direction of the washing water is parallel to the horizontal plane and the case where it is substantially parallel.
  • FIGS. 2 and 4 is a cross-sectional view taken along the line CC of the toilet bowl portion 14 of FIG.
  • the jet discharge port 28 is formed so as to straddle the initial water level WL ⁇ b> 1 of the stored water 44.
  • the upper portion of the jet outlet 28 is disposed above the initial water level WL1 of the stored water 44, and the air space in the jet water supply channel 58 and the toilet bowl portion 14 are in communication with each other through the inside.
  • the lower portion of the jet outlet 28 is disposed below the initial water level WL1 of the stored water 44 and is submerged in the stored water 44.
  • the lower edge 28a of the jet discharge port 28 is disposed below the initial water level WL1.
  • the lower edge 28a is a part of the jet discharge port 28 that is located vertically below the water passing through the jet discharge port 28.
  • the jet outlet 28 of the flush toilet 10 is formed so as to straddle the initial water level WL1 of the stored water 44 up and down, and the lower part thereof is submerged in the stored water 44 at the initial water level. Therefore, after cleaning the toilet bowl, water such as make-up water and residual water that has reached the jet outlet 28 through the jet water supply channel 58 can be merged with the stored water 44 without being transmitted along the inner surface of the toilet bowl 14. For this reason, after toilet bowl washing
  • “replenishment water” refers to water that is supplied in order to store the accumulated water 44 again to the initial water level WL1 after the accumulated water 44 is discharged through the trap portion 18 by toilet flushing.
  • “Residual water” refers to water remaining in the rim water passages 56A and 56B and the jet water supply passage 58 after the supply of the cleaning water from the cleaning water supply device 104 is completed.
  • the adhering position may become dirty after the water evaporates.
  • the flow of streaky water from the jet discharge port 28 to the inner surface of the toilet bowl portion 14 can be suppressed, contamination of the inner surface of the toilet bowl portion 14 due to residual streaky water can be suppressed.
  • cleaning can be prevented.
  • the inside of the toilet bowl part 14 can also be kept clean by suppressing the stain
  • the jet outlet 28 is formed so as to straddle the initial water level WL ⁇ b> 1 of the stored water 44, and the atmospheric space between the jet water supply path 58 and the toilet bowl 14 through the inside of the upper part of the jet outlet 28. Will be in communication. This advantage will be described.
  • FIG. 5 is a schematic diagram showing how the washing water flows in the jet water supply channel 58.
  • FIG. 5A shows a state before the start of toilet cleaning.
  • the positions, dimensions, and shapes of the toilet bowl part 14, the trap part 18, the jet water supply channel 58, and the like are different from those in the other figures.
  • the cleaning water W When the cleaning water W is supplied to the left rim water passage 56B, as shown in FIG. 5B, the cleaning water flows into the jet water supply path 58 from the introduction port 64, and the jet water supply path 58 is introduced. The washing water is gradually filled from the mouth 64 side.
  • the air in the jet water supply path 58 By the inflow of the cleaning water W into the jet water supply path 58, the air in the jet water supply path 58 is pushed out toward the jet discharge port 28 by the cleaning water W (see direction Pa).
  • the atmospheric space in the jet water supply path 58 is in communication with the atmospheric space in the toilet bowl 14 through the inside of the upper portion of the jet discharge port 28. The air is smoothly exhausted through the jet outlet 28 (see direction Pb).
  • the air in the jet water supply channel 58 is discharged from the jet discharge port 28 in the state of bubbles, so that a bubble burst sound is generated. This may cause discomfort to the user.
  • the discharge of bubbles from the jet discharge port 28 can be prevented, so that the generation of a bubble burst sound can be prevented and the toilet cleaning operation can be made quieter.
  • the discharge of bubbles from the jet discharge port 28 it is possible to prevent the user from feeling uncomfortable from the viewpoint of appearance.
  • the jet water supply path 58 has an air space 66 that is continuous during non-cleaning in the range from the inlet 64 through which the cleaning water flows from the left rim water passage 56B to the jet outlet 28. Formed to exist.
  • the “atmospheric space 66” here is a space filled with the atmosphere. This means that, in this range, the sealed water that blocks the flow of air in the direction of water flow is not stored in part of the jet water supply path 58. This advantage will be described.
  • FIG. 6 is a schematic diagram showing how the washing water flows in the jet water supply path 58 according to the modification.
  • a sealed water 68 is formed in the jet water supply path 58 as shown in FIG.
  • an upstream side air 70 and a downstream side air 72 separated by the sealing water 68 exist in the jet water supply path 58.
  • the upstream air 70 is pushed out in the direction Pc by the cleaning water W together with the sealing water 68, as shown in FIG. .
  • the sealed water 68 merges with the stored water 44 in the bottom of the toilet bowl 14, and as shown in FIG.
  • the jet discharge is performed with air remaining in the jet water supply path 58.
  • the accumulated water 44 may rise from the initial water level WL1 until the outlet 28 is submerged (see direction Pd). In this case, there is a possibility that the bursting sound of the bubbles is generated by exhausting the remaining air in the state of bubbles from the jet discharge port 28 (see direction Pe).
  • the sealed water 68 in the jet water supply channel 58 is not formed, and an increase in the water level of the stored water 44 due to the sealed water 68 joining with the stored water 44 can be prevented. Therefore, it is possible to prevent a situation in which the entire jet discharge port 28 is submerged and air bubbles are exhausted from the jet discharge port 28 in a state where air remains in the jet water supply channel 58, and it is possible to effectively generate a bubble burst sound. Can be prevented.
  • the jet discharge port 28 is formed so as to straddle the initial water level WL1 of the accumulated water 44, so that the function and effect described in (1) above can be obtained. .
  • FIG. 7 is a diagram schematically showing the gradient formed on the inner bottom surface of each rim water passage 56A, 56B.
  • the inner bottom surface of each rim water passage 56A, 56B is provided with a gradient that becomes downwardly inclined from the rim water spouting ports 30A, 30B toward the back side.
  • the right rim water outlet 30A has a high position on the inner bottom surface of the right rim water passage 56A, and the first gradient in which the branch position 60 side, which is the branching source of the right rim water passage 56A and the left rim water passage 56B, has a low position.
  • 74 is provided.
  • the first gradient 74 is provided so as to be inclined downward from the right rim water spouting port 30A toward the back side.
  • a second gradient 76 is provided on the inner bottom surface of the left rim water passage 56B so that the aforementioned branching position 60 side is at a high position and the inlet 64 of the jet water supply passage 58 is at a low position.
  • the second gradient 76 is provided so as to be inclined downward from the left rim spout 30B toward the back side.
  • a third slope 78 is provided on the inner bottom surface of the left rim water passage 56B so that the tip position 56Ba that becomes a dead end becomes a high position and the inlet 64 of the jet water supply passage 58 becomes a low position.
  • the recessed part 80 recessed downward is formed in the branch position 60 of each rim water passage 56A, 56B.
  • each rim water passage 56A, 56B becomes difficult to approach the rim water outlets 30A, 30B, and hardly flows into the toilet bowl 14 through each rim water outlet 30A, 30B.
  • the water level in each rim water passage 56A, 56B falls like the above-mentioned situation, it is possible to prevent the streak-like water from flowing down from the rim water spouting ports 30A, 30 to the inner surface of the toilet bowl 14, and the toilet bowl. It is possible to effectively prevent the appearance of the toilet bowl 14 from being deteriorated due to washing.
  • the inlet 64 of the jet water supply channel 58 is disposed at a position lower than the rim water spouting ports 30A and 30B.
  • the introduction port 64 according to the present embodiment is entirely disposed at a position lower than the rim water spouting ports 30A and 30B. From another viewpoint, the introduction port 64 is at least partially disposed at a position lower than the highest position of the inner bottom surface having the first gradient 74 and the second gradient 76.
  • the introduction port 64 according to the present embodiment is entirely disposed at a position lower than the highest position of the inner bottom surface having the first gradient 74 and the second gradient 76. More specifically, the introduction port 64 is disposed below the lowest position of the inner bottom surface having the first gradient 74 and is disposed at the same position as the lowest position of the inner bottom surface having the second gradient 76.
  • each rim water passage 56A, 56B the water on the inner bottom surface of each rim water passage 56A, 56B is introduced into the jet water supply passage 58 by the first gradient 74 and the second gradient 76. It becomes easy to guide to the mouth 64 by its own weight. Therefore, the water on the inner bottom surface of each rim water passage 56A, 56B can be discharged through the jet water supply passage 58, and the amount of water flowing into the toilet bowl 14 through each rim water spouting port 30A, 30B can be easily reduced.
  • cleans the inside of the toilet bowl part 14 with the so-called washing-off type washing
  • the cleaning water within the predetermined flow rate range is supplied from the cleaning water supply device 104 into the water discharge section 26 of the flush toilet 10.
  • the cleaning water supply device 104 supplies cleaning water by a water supply direct pressure type water supply method using a tap water supply pressure.
  • the cleaning water supplied from the cleaning water supply device 104 flows into the water discharger 26 from the inlet 54.
  • the washing water that has flowed into the water discharge section 26 flows through the right rim water passage 56A, the left rim water passage 56B, and the jet water supply passage 58 (not shown), while the jet discharge port 28 and each rim water discharge port 30A. , 30B.
  • the washing water discharged from the jet discharge port 28 forms a swirl flow Dwa that swirls along the one side (counterclockwise direction) in the circumferential direction in the recess 22 of the toilet bowl 14.
  • the swirl flow Dwa cleans the inner surface of the recess 22 and collects filth in the recess 22 at the swivel center.
  • Each rim spout 30A, 30B swirls in the toilet bowl portion 14 along one side in the circumferential direction by discharging wash water to one side in the circumferential direction along the inner circumferential surface of the rim portion 24.
  • the rim portion 24 and the receiving surface portion 20 of the toilet bowl portion 14 are washed by the swirl flow Dwb.
  • a part of the washing water forming the swirl flow Dwb on the receiving surface portion 20 swirls while moving downward, and forms a flow Dwc from the receiving surface portion 20 through the recess 22 toward the inlet 16 of the trap portion 18.
  • the filth in the concave portion 22 of the toilet bowl portion 14 is swept away through the inlet 16 into the trap portion 18 by this flow Dwc.
  • the filth collected at the swirling center is swept away by the swirling flow Dwa, the filth can be effectively discharged.
  • the toilet bowl 14 and the water discharger 26 is configured so that the wash water discharged from the rim water discharge ports 30 ⁇ / b> A and 30 ⁇ / b> B reaches the accumulated water 44 after the wash water is discharged from the jet discharge port 28.
  • the toilet bowl 14 and the water discharger 26 finish pushing out the air in the jet water supply channel 58 through the jet discharge port 28 by the wash water flowing into the jet water supply channel 58 from the introduction port 64.
  • the cleaning water discharged from the rim water discharge ports 30 ⁇ / b> A and 30 ⁇ / b> B is configured to land on the accumulated water 44.
  • the water discharge section 26 includes the length of the water flow path from the inflow port 54 to each rim water discharge port 30A, 30B, the length of the water flow path of the jet water supply path 58, each water flow path 56A, The passage cross-sectional areas of 56B and 58 are adjusted. Moreover, since it comprises in this way, as for the toilet bowl part 14, the curvature radius by planar view, the inclination of each site
  • rim wash water In order to delay the timing at which the wash water discharged from the rim spouts 30A and 30B (hereinafter referred to as rim wash water) reaches the accumulated water 44, water flows from the inlet 54 to the rim spouts 30A and 30B. Adjustments are made by increasing the length of the path, increasing the radius of curvature of the toilet bowl 14 in plan view, or making some of the slope gentle.
  • the toilet bowl 14 and the water discharger 26 are configured so that the entire jet discharge port 28 is submerged after the air in the jet water supply path 58 has been exhausted from the jet discharge port 28. It can be said that it is comprised. This also prevents the entire jet discharge port 28 from being submerged due to a rise in the water level of the stored water 44 before the air in the jet water supply path 58 has been pushed out by the wash water.
  • the water 44 in the recessed part 22 of the toilet bowl part 14 is the water level from the initial water level WL1 by the wash water discharged from the jet discharge port 28 and the rim water discharge ports 30A and 30B. It rises to WL2 (see also FIGS. 2 and 4).
  • the entire jet discharge port 28 is submerged.
  • the supply amount of the cleaning water supplied from the cleaning water supply device 104 is adjusted so as to achieve such a water level WL2.
  • the flush toilet 10 has been described as 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 method.
  • a cleaning method combined with another method such as a siphon method.
  • water supply systems such as a gravity water supply system using gravity, may be used besides this.
  • 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 jet discharge port 28 is formed on the wall surface on the left side and the front side of the recess 22
  • the position thereof is not limited thereto.
  • the water discharge part 26 demonstrates the example comprised so that the swirling flow swirling along the one side of the circumferential direction may be formed in the bottom part of the toilet bowl part 14 by discharging wash water from the jet discharge port 28. did.
  • the water flow formed by the washing water discharged from the jet discharge port 28 is not limited to this, and for example, a water flow passing through the inlet 16 of the trap portion 18 toward the deep side of the trap portion 18 may be formed. In any case, a water flow that promotes the discharge of filth through the trap portion 18 may be formed.
  • the jet discharge port 28 has an initial water level WL1 of the accumulated water 44 in a range from 1/4 to 3/4 with respect to the vertical dimension La when the vertical dimension of the jet discharge port 28 is La. It may be formed so as to be arranged on the lower side with respect to.
  • the rim spouts 30 ⁇ / b> A and 30 ⁇ / b> B have been described as an example of spouts for discharging wash water into the toilet bowl 14. This spout may not be formed in the rim part 24, and may be formed in the warm water washing apparatus mounted on the toilet body 12. Further, the example in which the two rim spouts 30A and 30B are formed in the rim portion 24 has been described, but only one rim spout may be formed in the rim portion 24, or three or more rim spouts may be formed. A water mouth may be formed.
  • rim water discharge ports 30 ⁇ / b> A and 30 ⁇ / b> B have been described with respect to the example in which the cleaning water is discharged toward one side in the circumferential direction along the inner peripheral surface of the rim portion 24.
  • the spout formed in the rim part 24 should just be for discharging wash water in the toilet bowl part 14, and the discharge direction of wash water is not restricted to this. For example, the washing water may be discharged downward.
  • left rim water passage 56B and the right rim water passage 56A are formed on the back side of the rim portion 24, only one of them may be formed.
  • the inlet 64 of the jet water supply channel 58 is formed on the inner bottom surface of the left rim water channel 56B.
  • the inlet 64 may be formed on the inner surface of the left rim water passage 56B, or the inner bottom surface of the right rim water passage 56A. Or you may form in an inner surface.
  • a flush toilet according to a second aspect of the first invention is the flush toilet according to the first aspect, wherein the stool part and the water discharge part are configured so that the air in the water supply passage for the jet is exhausted from the jet outlet and the jet You may comprise so that the whole discharge outlet may be submerged.
  • the entire jet discharge port is submerged due to a rise in the water level of the stored water before the air in the jet water supply channel has been pushed out by the washing water.
  • the entire jet discharge port is submerged while air remains in the jet water supply channel, so that it is possible to prevent the bubbles from being exhausted from the jet discharge port, and the generation of bubble burst noise. It can be effectively prevented.
  • the water discharge part has a spout for discharging wash water into the toilet bowl part, and the toilet bowl part and the water discharge part are: After the cleaning water is discharged from the jet discharge port, the cleaning water discharged from the rim water discharge port may land on the stored water.
  • the cleaning water discharged from the rim water spouting water reaches the pool water, and the entire jet discharge port is increased by increasing the water level of the pool water. Can be prevented from being submerged. As a result, the entire jet discharge port is submerged while air remains in the jet water supply channel, so that it is possible to prevent the bubbles from being exhausted from the jet discharge port, and the generation of bubble burst noise. It can be effectively prevented.
  • the flush toilet of the fourth aspect of the first invention is any one of the first to third aspects, wherein the jet water supply channel is in a range from the inlet for introducing the wash water to the jet outlet. Further, it may be formed such that there is a continuous atmospheric space at the time of non-cleaning. If sealed water that blocks the flow of air in the direction of water flow is formed in the jet water supply channel, if cleaning water flows from the inlet of the jet water supply channel, the air between the inlet and the sealed water Is pushed out together with the sealed water, and the sealed water joins the stored water, so that the stored water rises from the water level at the time of non-washing.
  • the air in the jet water supply channel is exhausted in the state of bubbles from the jet discharge port, and there is a possibility that a bursting sound of the bubbles is generated.
  • the sealed water is not formed in the jet water supply channel, it is possible to prevent an increase in the level of the stored water due to the sealed water in the jet water channel joining the stored water. Therefore, the entire jet outlet can be submerged while air remains in the jet water supply channel, preventing bubbles from being exhausted from the jet outlet, and the effect of generating a bursting sound of the bubbles is effective. Can be prevented.
  • 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 stool part has a rim part that forms an upper end part of the stool part, and the water discharge part Has a rim water outlet formed in the rim portion, and a rim water passage formed on the back side of the rim portion for supplying cleaning water to the rim water outlet.
  • the bottom surface may be provided with a slope that is inclined downward from the rim water spouting port toward the back side.
  • the water on the inner bottom surface of the rim water passage easily flows due to its own weight in the direction away from the rim water spouting port due to the gradient of the inner bottom surface. That is, it becomes difficult for water on the inner bottom surface of the rim water passage to approach the rim spout and to flow into the toilet bowl through the rim spout. Therefore, when the water level in the rim water passage is lowered as described above, streaky water can be prevented from flowing down from the rim spout to the inner surface of the toilet bowl, and the appearance in the toilet bowl caused by toilet flushing can be prevented. Reduction can be effectively prevented.
  • a flush toilet according to a sixth aspect of the first invention is the flush toilet according to the fifth aspect, wherein an inlet for introducing the wash water into the jet water supply passage is formed on an inner wall surface of the rim water passage. At least a part may be disposed at a position lower than the water inlet.
  • the water on the inner bottom surface of the rim water channel can be easily guided to the inlet of the jet water channel by its own weight due to the gradient. Therefore, the water on the inner bottom surface of the rim water passage can be discharged through the jet water supply passage, and the amount of water flowing into the toilet bowl through the rim spout can be easily reduced.
  • FIG. 11 is a plan view of a flush toilet 210 according to the second embodiment.
  • the flush toilet 210 includes a toilet body 212 made of ceramic.
  • the toilet body 212 is a wall-mounted toilet that is attached in a state of being hung on the side wall surface 200 of the toilet room.
  • the toilet bowl 212 includes a toilet bowl 214 formed at the front of the toilet bowl 212 and a drainage passage 216 connected to the bottom of the toilet bowl 214.
  • the drainage passage 216 serves as a passage for waste discharged from the toilet bowl 214 to a sewage water channel (not shown).
  • the drainage passage part 216 includes a trap part 220 in which sealed water 218 for blocking the flow of air in the direction of water flow is stored.
  • a connecting pipe 202 is connected to the downstream end of the trap part 220, and the drainage passage part 216 is connected to the sewage side water channel via the connecting pipe 202.
  • FIG. 13 is a cross-sectional view taken along line BB in FIG.
  • the toilet bowl 214 is formed at the bottom of the toilet bowl 214 while being recessed downward from the bottom edge of the bowl receiving surface 222 for receiving filth and the receiving surface 222.
  • a rim portion 226 formed at the upper end of the toilet bowl 214.
  • the receiving surface portion 222 is formed in an elliptical shape whose front and rear dimensions are larger than the left and right dimensions in plan view.
  • An inlet 216 a of the drainage passage 216 is opened at the bottom surface of the recess 224, and a part of the sealed water 218 is stored as the accumulated water 228 in the recess 224.
  • the toilet body 212 includes a water discharge unit 230 for discharging the wash water.
  • the water discharger 230 has two rim water passages 232L and 232R formed on the outer peripheral side of the rim portion 226, and a common water passage 234 for supplying cleaning water to each of the rim water passages 232L and 232R (also FIG. 12). Reference) and two rim water discharge holes 236L and 236R formed in the rim portion 226.
  • the water discharger 230 includes a jet discharge hole 238 formed in the recess 224 of the toilet bowl 214 and a jet communication path 240 for supplying cleaning water to the jet discharge hole 238.
  • the flush toilet 210 has one of the main features in the rim water passage 232L, the other features of the water discharger 230 will be described first.
  • the two rim water passages 232 ⁇ / b> L and 232 ⁇ / b> R include a left rim water passage 232 ⁇ / b> L (first rim water passage) on the left and right sides of the toilet body 212 and a right rim passage on the right and left sides of the toilet body 212. And a water channel 232R (second rim water channel).
  • the left rim water passage 232L is disposed on the left side with respect to the left-right center line CL of the toilet body 212, as shown in FIG.
  • the right rim water passage 232R is arranged on the right side with respect to the left-right center line CL of the toilet body 212.
  • the left-right center line CL is a straight line extending in the front-rear direction by dividing the left-right dimension of the outer surface portion of the toilet body 212 into two equal parts.
  • the rim water passages 232L and 232R are formed by branching left and right from the downstream end of the common water passage 234.
  • a branch position 242 serving as a branch source of each rim water passage 232L, 232R is arranged behind the rim portion 226.
  • the common water passage 234 is supplied with cleaning water from a water supply pipe 204 a that is a part of the cleaning water supply device 204.
  • the left rim water passage 232L is formed to extend from the start end 232a on the branching position 242 side to one side in the circumferential direction (clockwise direction in FIG. 13).
  • the end portion 232b at the end position in the extending direction of the left rim water passage 232L is formed to be a dead end. Details of the left rim water passage 232L will be described later.
  • the right rim water passage 232R is formed so as to extend from the branch position 242 on the start end side to the other side in the circumferential direction (counterclockwise direction in FIG. 13).
  • a right rim water discharge hole 236R is formed at a terminal portion that is a terminal position in the extending direction of the right rim water passage 232R.
  • “one end side in the circumferential direction” is referred to as a clockwise direction
  • “the other end side in the circumferential direction” is referred to as a counterclockwise direction.
  • the two rim water discharge holes 236L and 236R include a left rim water discharge hole 236L (first rim water discharge hole) on the left side of the toilet body 212 and a right rim water discharge hole 236R (second rim water discharge hole) on the toilet body 212. included.
  • the left rim water discharge hole 236 ⁇ / b> L is disposed on the left side of the left-right center line CL of the toilet body 212 and at the rear of the toilet bowl 214.
  • the right rim water discharge hole 236 ⁇ / b> R is disposed on the right side with respect to the left-right center line CL of the toilet main body 212 and at an intermediate position in the front-rear direction of the toilet bowl 214.
  • the left rim water discharge hole 236L is for discharging water from the left rim water passage 232L into the toilet bowl 214.
  • the right rim water discharge hole 236R is for discharging water into the toilet bowl 214 from the right rim water passage 232R. Wash water is spouted in the counterclockwise direction along the inner peripheral surface of the rim portion 226 from the two rim water discharge holes 236L and 236R. Thereby, a water flow for cleaning the inner surface of the toilet bowl 214, particularly the inner surface of the rim 226 and the receiving surface 222 is formed. This water flow becomes a swirl flow guided so as to swirl counterclockwise in the toilet bowl 214.
  • the jet discharge hole 238 is formed on the wall surface on the left side and the front side of the recess 224 of the toilet bowl 214. Wash water is spouted from the jet discharge hole 238 toward the accumulated water 228 (see FIG. 12) in the recess 224 of the toilet bowl 214. Specifically, the wash water is spouted in the counterclockwise direction along the inner peripheral surface of the recess 224 toward the water 228 in the recess 224 of the toilet bowl 214. As a result, a counterclockwise swirl flow is formed in the recess 224 of the toilet bowl 214, and the filth in the recess 224 is collected at the swivel center by this swirl flow.
  • the filth is pushed away through the inlet 216a into the drainage passage 216 by the cleaning water flowing into the recess 224 from the receiving surface 222. In this manner, a water flow for promoting the discharge of filth is formed in the accumulated water 228 by the cleaning water discharged from the jet discharge holes 238.
  • the jet communication path 240 communicates with the left rim water passage 232L and the jet discharge hole 238.
  • the jet communication path 240 includes a first portion 240 a, a second portion 240 b, and a third portion 240 that are sequentially provided from the left rim water passage 232 ⁇ / b> L to the jet discharge hole 238.
  • the first portion 240a extends downward and radially inward of the toilet bowl 214 from a water inlet 240d (described later) that opens in the inner wall surface of the left rim water passage 232L.
  • the second portion 240b extends on the outer peripheral side of the toilet bowl 214 while bending in the clockwise direction and downward from the downstream end of the first portion 240a.
  • the third portion 240c extends rearward from the downstream end portion of the second portion 240b toward the jet discharge hole 238.
  • FIG. 14 is an enlarged view of the left rim water passage 232L of FIG.
  • the left rim water passage 232L has a shape that extends while bending in an L shape from the start end 232a toward the end end 232b.
  • the wash water supplied from the start end 232a to the left rim water passage 232L is guided to the end portion 232b while changing the flow direction by hitting the inner wall surface of the left rim water passage 232L.
  • the left rim water passage 232L is formed so that the washing water can be guided from the start side toward the end side.
  • the left rim water discharge hole 236L is formed by branching from a middle position of the path Pa from the start end side to the end side of the left rim water passage 232L.
  • the left rim water discharge hole 236L is formed so as to extend from the midway position inside the toilet bowl 214 and in the counterclockwise direction.
  • Water introduction port 240d for introducing cleaning water into jet communication passage 240 opens to the end side of left rim water passage 232L from left rim water discharge hole 236L. Specifically, the water introduction port 240d opens at the inner bottom surface of the end portion 232b of the left rim water passage 232L. The water inlet 240d is disposed on the left side of the toilet body 212 on the front side of the toilet body 212 from the left rim water discharge hole 236L.
  • the cleaning water supplied from the start end side to the left rim water passage 232L is guided to the left rim water passage 232L, and flows first into the water passage portion on the water introduction port 240d side from the left rim water discharge hole 236L.
  • a part of the cleaning water changes its flow direction on the way from the start side to the end side of the left rim water channel 232L. It flows into the left rim water discharge hole 236L (see direction Pb).
  • the left rim water discharge hole 236L is formed at a position where the wash water supplied from the start end side of the left rim water passage 232L can flow in by changing the flow direction.
  • FIG. 15 is a sectional view taken along the line DD of FIG. 14, and FIG. 16 is a sectional view taken along the line EE of FIG.
  • a throttle portion 244 is formed between the left rim water discharge hole 236L and the water introduction port 240d.
  • the position of the aperture 244 is indicated by a two-dot chain line.
  • the throttle portion 244 is formed to throttle the flow of the cleaning water from the start end side to the end side of the left rim water passage 232L.
  • the restricting portion 244 has a wall portion 244a protruding from the inner wall surface of the left rim water passage 232L, and a water passage portion 244b through which the cleaning water can pass.
  • the water passage portion 244b is formed as an opening surrounded by the inner wall surface of the left rim water passage 232L and the wall portion 244a.
  • the throttle portion 244 is formed so that the space in the left rim water passage 232L is expanded after being narrowed from the start end side toward the end end side.
  • the throttling portion 244 starts from a water channel portion 232d on the start end side with respect to the throttling portion 244 of the left rim water passage 232L (hereinafter referred to as a start end side water passage portion 232d), and is located on the terminal side of the throttling portion 244 of the left rim water passage 232L. It has a function of reducing the flow rate of the cleaning water flowing into the H.232e (hereinafter referred to as the end-side water channel portion 232e).
  • cleaning water is supplied to the common water passage 234 from the water pipe 204a.
  • the cleaning water is branched and supplied from the branch position 242 of the common water passage 234 to the rim water passages 232L and 232R (see direction Wp in FIG. 13).
  • Wash water flowing through the right rim water passage 232R is discharged from the right rim water discharge hole 236R.
  • Part of the wash water flowing through the left rim water passage 232L is discharged from the left rim water discharge hole 236L, and the remaining portion is discharged from the jet discharge hole 238 through the jet communication path 240.
  • the left rim water discharge hole 236L is formed in the end portion 232b of the left rim water passage 232L, and the water introduction port 240d of the jet communication passage 240 opens at a midpoint in the path from the start end side to the end end side. think of.
  • the cleaning water flowing from the start end side in the left rim water passage 232L is easily guided to the left rim water discharge hole 236L of the end portion 232b without changing the flow direction even if the jet communication passage 240 is provided. Therefore, it becomes difficult to take in the washing water from the left rim water passage 232L through the jet communication passage 240, and it becomes difficult to discharge the high-pressure washing water from the jet discharge hole 238.
  • the wash water that has flowed to the end portion 232b of the left rim water passage 232L can only change the flow direction from there, and the water inlet 240d in the vicinity thereof. It is easy to be introduced by changing the flow direction. Therefore, it becomes easy to take in the washing water from the left rim water passage 232L to the jet communication path 240, and it becomes easy to discharge high-pressure washing water from the jet discharge hole 238.
  • the cleaning water can be discharged from the jet discharge holes 238 while supplying the cleaning water to the left and right rim water passages 232L, 232R and discharging the cleaning water from the plurality of rim water discharge holes 236L, 236R.
  • the water pressure by the washing water of the water channel part located on the start end side from the throttle part 244 can be increased early, and the high water pressure washing water can be discharged from the water channel part through the left rim water discharge hole 236L at an early stage.
  • the timing of discharging the high-pressure washing water from the left rim water discharge hole 236L is delayed by the amount of the water channel portion on the terminal side of the left rim water passage 232L from the left rim water discharge hole 236L. easy. Even in this case, by forming the throttle portion 244 between the left rim water discharge hole 236L and the water introduction port 240d, the high water pressure wash water is discharged from the jet discharge hole 238 while the high water pressure wash water is discharged to the left rim water discharge hole. There is an advantage that 236L can be discharged early.
  • FIG. 17 is a diagram schematically showing the gradient formed on the inner bottom surface of each rim water passage 232L, 232R.
  • the gradient from the high position to the low position is indicated by an arrow.
  • the inner bottom surface of each rim water passage 232L, 232R is provided with a slope that becomes downwardly inclined from the rim water discharge holes 236L, 236R toward the back side.
  • the branch position 242 side that is the branching source of each rim water passage 232L, 232R is a high position, and the water introduction port 240d of the jet communication path 240 is a low position.
  • One gradient 250 is provided.
  • the first gradient 250 is provided so as to be inclined downward from the left rim water discharge hole 236L toward the back side.
  • a second slope 252 is provided on the inner bottom surface of the right rim water passage 232R in which the right rim water discharge hole 236R is at a high position and the branch position 242 side of each rim water passage 232L, 232R is at a low position.
  • the second gradient 252 is provided so as to be inclined downward from the right rim water discharge hole 236R toward the back side.
  • the recessed part 254 recessed downward is formed in the branch position 242 of each rim water passage 232L, 232R.
  • the water introduction port 240d of the jet communication path 240 is at least partially disposed at a position lower than the rim water discharge holes 236L and 236R.
  • the entire water inlet 240d according to the present embodiment is disposed at a position lower than the rim water spouting holes 236L and 236R.
  • the residual water remaining on the inner bottom surfaces of the rim water passages 232L and 232R can be discharged from the jet communication passage 240 through the water inlets 240d located lower than the rim water discharge holes 236L and 236R. It becomes easy to reduce the amount of water flowing into the toilet bowl 214 through the rim water discharge holes 236L and 236R. Thereby, when the water level in each rim water passage 232L, 232R falls like the above-mentioned situation, it is possible to prevent the streak-like water from flowing down the inner surface of the toilet bowl 214 from each rim water discharge hole 236L, 236R. It is possible to effectively prevent the appearance of the toilet bowl 214 from being deteriorated due to the cleaning.
  • residual water here includes those formed by remaining washing water used for toilet cleaning.
  • makeup water supplied to re-store the stored water 228 remains after the stored water 228 is discharged from the trap unit 220 by toilet cleaning.
  • the water on the inner bottom surface of the rim water passages 232L and 232R is supplied to the water in the jet communication passage 240 by the first gradient 250 and the second gradient 252. It becomes easy to guide to the introduction port 240d by its own weight. Therefore, the water on the inner bottom surfaces of the rim water passages 232L and 232R can be discharged through the jet communication passage 240, and the amount of water flowing into the toilet bowl 214 through the rim water discharge holes 236L and 236R can be easily reduced.
  • the water channel portion 236d on the left rim water discharge hole 236L side (start end side) with respect to the throttle portion 244 is referred to as a start end side water channel portion 236d, and the water inlet port 240d is connected to the throttle portion 244.
  • the water channel portion 236e on the side (terminal side) is referred to as a terminal side water channel portion 236e.
  • the bottom surface 244c of the water flow portion 244b of the throttle portion 244 is such that the inner bottom surface of the start end side water channel portion 236d and the inner bottom surface of the end side water channel portion 236e move from the left rim water discharge hole 236L side to the water introduction port 240d side.
  • the bottom surface 244c is formed in a range extending over the entire width of the left rim water passage 232L in the water passage width direction at the position where the throttle portion 244 is formed.
  • Such a throttle portion 244 has a shape capable of guiding the residual water transmitted on the inner bottom surface of the left rim water passage 232L in the direction Pc from the left rim water discharge hole 236L side to the water introduction port 240d side. .
  • the bottom surface 244c of the throttle portion 244 connects the inner bottom surface of the start end side water channel portion 232d and the inner bottom surface of the end side water channel portion 232e horizontally from the start end side toward the end side. It suffices to connect them so that the end side is lower than the start side.
  • the residual water transmitted on the inner bottom surface of the left rim water passage 232L has a shape capable of conducting water from the left rim water discharge hole 236L side toward the water introduction port 240d.
  • the bottom surface 244c of the throttle portion 244 may be formed in a range over a part of the left rim water passage 232L in the water channel width direction at the position where the throttle portion 244 is formed. Good.
  • the first bottom surface 250 (see FIG. 17) is provided on the inner bottom surface of the left rim water passage 232L so as to be inclined downward toward the water introduction port 240d of the jet communication passage 240. Therefore, when the water pressure corresponding to the supply water pressure is applied to the cleaning water in the terminal side water channel portion 236e of the left rim water passage 232L, the cleaning water in the terminal side water channel portion 236e is introduced along the first gradient 250. It becomes easy to guide smoothly toward the mouth 240d. As a result, the cleaning water can be more easily taken into the jet communication path 240 from the left rim water passage 232L, and the high water pressure cleaning water can be more easily discharged from the jet discharge hole 238.
  • FIG. 18A is a diagram showing a left rim water passage 232L according to the first modification.
  • the left rim water passage 232L is shown from the same viewpoint as FIG.
  • the restricting portion 244 of the present example includes a wall portion 244a between the start-side water channel portion 232d and the terminal-side water channel portion 232e so as to block the flow of fluid through these lower regions. Is different in that it is formed.
  • the above-described effects (A) and (B) can be obtained.
  • the present inventor conducted an experimental study and found that bubbles are easily discharged from the jet discharge hole 238.
  • a bursting sound of the air bubbles may be generated or the user may feel uncomfortable from the viewpoint of appearance, which may cause discomfort to the user.
  • the mechanism of this phenomenon is not clear, but is presumed to be due to the following reasons.
  • the cleaning water W is supplied to the left rim water passage 232L, the starting end side water channel portion 232d is filled with the cleaning water W first as shown in FIG.
  • the air Ar may remain without leaving the terminal-side water channel portion 232e.
  • air Ar is present on the terminal end side as viewed from the water passage portion 244b of the throttle portion 244. Accordingly, when the cleaning water W flows into the terminal side water channel portion 232e through the water flow portion 244b in this state, the cleaning water W flows into the jet communication path 240 while entraining the air Ar in the terminal side water channel portion 232e. And It is presumed that the entrained air is discharged as bubbles from the jet discharge hole 238.
  • the throttle portion 244 blocks the flow of fluid passing through these upper regions between the start-side water channel portion 232 d and the end-side water channel portion 232 e.
  • a wall portion 244a is formed.
  • the wall portion 244 a is formed in a range extending over the entire width of the left rim water passage 232 ⁇ / b> L in the water passage width direction at the position where the throttle portion 244 is formed.
  • the wall portion 244 of the throttle portion 244 as described above, when the cleaning water is supplied into the left rim water passage 232L, the terminal side water passage of the left rim water passage 232L. Air Ar tends to remain from the portion 232e without escaping outside. Therefore, when the cleaning water W passes through the water flow portion 244b of the throttle portion 244, the air Ar becomes a resistance, so that the cleaning water flowing into the terminal side water channel portion 232e is difficult to spread. As a result, it is possible to prevent a decrease in the water force due to the spreading of the cleaning water in the terminal-side water channel portion 232e, and to easily discharge the cleaning water from the jet discharge hole 238.
  • the wall portion 244a of the throttle portion 244 is located from the inner upper surface of the left rim water passage 232L when the height of the left rim water passage 232L is H0 at the formation position of the throttle portion 244. Is formed such that the height dimension H1 is equal to or greater than 1 ⁇ 2 of the water channel height H0.
  • the wall portion 244a of the throttle portion 244 may be formed such that the height dimension H1 from the upper inner surface of the left rim water passage 232L is 3/4 or more of the water passage height H0.
  • the flush toilet 210 may wash the inside of the toilet bowl 214 by a washing method such as a wash-off type or a siphon type.
  • the flush toilet 210 may use a water supply system such as a direct water pressure system or a gravity water supply system using gravity.
  • the toilet body 212 is described as an example of a wall-mounted toilet, but may be a floor-standing toilet installed on the floor surface of a toilet room.
  • the toilet body 212 may be made of resin or the like in addition to pottery.
  • left rim water passage 232L and the right rim water passage 232R have been described as being branched from the downstream end of the common water passage 234, they may be formed separately.
  • the jet discharge hole 238 may be formed in the trap portion 220 of the drainage passage portion 216.
  • the water flowing toward the downstream side of the trap portion 220 is formed in the sealed water 218 by the cleaning water discharged from the jet discharge holes 238, and the discharge of filth is promoted. That is, the jet discharge hole 238 only needs to be formed in the bottom of the toilet bowl 214 or the drainage passage 216. In these cases, a water flow for promoting discharge of filth is formed in the stored water 228 or the sealed water 218.
  • the jet communication path 240 the example in which the jet discharge hole 238 communicates with the left rim water passage 232L has been described, but the jet discharge hole 238 and the right rim water passage 232R may communicate with each other.
  • the water introduction port 240d of the communicating path 240 for jets demonstrated the example opened to the termination
  • the water introduction port 240d only needs to be opened on the inner wall surface of the rim water passage, and may be opened on the inner side surface in addition to the inner bottom surface of the rim water passage.
  • the water flow portion 244 b of the throttle portion 244 has been described as being surrounded by the inner wall surface of the left rim water passage 232 ⁇ / b> L and the wall portion 244 a of the throttle portion 244.
  • the water passage portion 244b is formed with a notch 256 in the wall portion 244a of the throttle portion 244, and is surrounded by the notch 256 and the inner wall surface of the left rim water passage 232L. It may be formed.
  • the water flow part 244b may be formed in multiple places, as shown in FIG.
  • the water passage portion 244b may be formed by forming a through hole in the wall portion 244a of the throttle portion 244 and only the through hole of the wall portion 244a.
  • the first rim water discharge hole 36L that discharges the cleaning water supplied to the left rim water passage 232L is arranged on the left side with respect to the left-right center line CL, and the cleaning water supplied to the right rim water passage 232R
  • the second rim water discharge hole 236R to be discharged has been described as being disposed on the right side with respect to the left-right center line CL.
  • the first rim water discharge hole 236L may be disposed on the right side with respect to the left-right center line CL
  • the second rim water discharge hole 236R may be disposed on the left side with respect to the left-right center line CL.
  • the position of each rim water discharge hole 236L, 236R is not particularly limited.
  • another rim water discharge hole may be formed in the rim portion 226.
  • FIG. 17 illustrates an example in which the water inlets 240d are arranged at lower positions than the rim water discharge holes 236L and 236R by providing the gradients 250 and 252 on the inner bottom surfaces of the rim water passages 232L and 232R.
  • the water introduction port 240d is disposed at a lower position than the first rim water discharge hole 236L by providing a step which becomes a step downward from the first rim water discharge hole 236L of the first rim water passage 232L toward the terminal side. May be.
  • rim water discharge holes 236L and 236R have been described as examples in which cleaning water is discharged toward one side in the circumferential direction along the inner peripheral surface of the rim portion 226.
  • the spout formed in the rim portion 226 may be any one for discharging the wash water into the toilet bowl 214, and the discharge direction of the wash water is not limited to this.
  • the washing water may be discharged downward.
  • jet discharge hole 238 is formed on the wall surface on the left side and the front side of the recess 224
  • the position thereof is not limited thereto.
  • the flow of the wash water is restricted between the first rim water discharge hole and the water inlet.
  • a narrowed portion may be formed.
  • the water channel portion that is closer to the start side than the throttle portion of the first rim water passage can be more easily filled with the cleaning water earlier than the water channel portion that is closer to the end side than the throttle portion. Therefore, the water pressure due to the cleaning water in the water channel portion on the start end side from the throttle portion can be increased early, and the high water pressure cleaning water can be quickly discharged from the water channel portion through the first rim water discharge hole.
  • At least a part of the water introduction port may be disposed at a position lower than the first rim water spouting hole. According to this aspect, it becomes easy to discharge the residual water in the first rim water passage through the water introduction port located lower than the first rim water discharge hole, and the amount of water flowing into the toilet bowl through the first rim water discharge hole. It becomes easy to reduce. Thereby, it is possible to prevent the streak-like water from flowing down from the first rim spouting hole to the inner surface of the toilet bowl portion.
  • a flush toilet according to a fourth aspect of the second aspect of the present invention is the flush toilet according to the second aspect, wherein the water inlet is at least partially disposed at a position lower than the first rim water spouting hole, and the throttle portion is the first rim.
  • the shape which can guide the residual water which transmits on the inner bottom face of a water flow path from the said 1st rim water discharge hole side toward the said water inlet side may be sufficient. According to this aspect, it becomes easy for residual water in the first rim water passage to flow without stagnation from the first rim water discharge hole side to the water introduction port side with respect to the throttle portion.
  • the throttle portion is formed in the first rim water passage, the residual water in the first rim water passage can be easily discharged through the communication passage. Thereby, it is possible to effectively prevent the streak-like water from flowing down from the first rim spouting hole to the inner surface of the toilet bowl portion.
  • a flush toilet according to a fifth aspect of the second invention is the third aspect or the fourth aspect, wherein the inner bottom surface of the first rim water passage is inclined downward from the first rim water discharge hole toward the back side.
  • a gradient may be provided.
  • the residual water in the first rim water passage can be easily guided to the water introduction port by its own weight, and the amount of water flowing into the toilet bowl through the first rim water discharge hole can be easily reduced. Thereby, it is possible to effectively prevent the streak-like water from flowing down from the first rim spouting hole to the inner surface of the toilet bowl portion.
  • a flush toilet according to a sixth aspect of the second invention is the flush toilet according to the second aspect or the fourth aspect, wherein the throttle portion includes a water channel portion on a start side with respect to the throttle portion, and a water channel on a terminal side with respect to the throttle portion. Between the portions, there may be wall portions that block the flow of fluid through these upper regions.
  • the start side water channel portion is first filled with the wash water and air remains in the upper region of the end side water channel portion. In this case, according to this aspect, not the air but the cleaning water is likely to exist on the end side when viewed from the water passing portion of the throttle portion.
  • the flush toilet of the seventh aspect of the second invention is the flush toilet according to any one of the first to sixth aspects, wherein the first rim water spouting hole is disposed on one side of the toilet body, and the water inlet is You may arrange
  • a throttle portion for restricting a flow of washing water is formed in the first rim water passage between the first rim water discharge hole and the water introduction port.
  • the present invention relates to a flush toilet.

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  • Sanitary Device For Flush Toilet (AREA)

Abstract

This flush toilet device is provided with a toilet bowl portion 14, a trap portion 18 which is connected to the bottom of the toilet bowl portion 14 and which determines the water level when accumulated water 44 that has accumulated in the bottom is not being flushed out, and a spout section which has a jet discharge port 28 formed in the bottom and which forms a water stream inside the bottom by discharging flushing water out from the jet discharge port 28, the jet discharge port 28 being formed so as to reach above and below the water level WL1 of the accumulated water 44 when the accumulated water 44 is not being flushed out.

Description

水洗大便器Flush toilet
 本発明は、水洗大便器に関する。 The present invention relates to a flush toilet.
1.大便器の便鉢部には、洗浄水を吐き出すための開口として、リム吐水口の他にジェット吐出口が形成されることがある。リム吐水口は、便鉢部のリム部に形成され、リム吐水口から吐き出される洗浄水により便鉢部全体が洗浄される。ジェット吐出口は、便鉢部の底部等に形成され、ジェット吐出口から吐き出される洗浄水により、汚物の排出を促進するための水流が形成される。 1. In addition to the rim spout, a jet outlet may be formed in the toilet bowl of the toilet as an opening for discharging the wash water. The rim spout is formed in the rim portion of the toilet bowl, and the entire toilet bowl is washed with the wash water discharged from the rim spout. The jet outlet is formed at the bottom of the toilet bowl, and a water flow for promoting the discharge of filth is formed by the washing water discharged from the jet outlet.
 例えば、特許文献1には、便鉢部の底部内に溜められる溜水の最高水位より高位置に形成されるジェット吐出口と、ジェット吐出口に洗浄水を供給する洗浄水供給路と、を有する便器が開示されている。この便器では、ジェット吐出口から吐き出される洗浄水により、水平軸周りに旋回する旋回流が形成される。この旋回流によりトラップ部内に汚物を送り込むことができ、汚物を効果的に排出できると記載されている。 For example, Patent Document 1 includes a jet discharge port formed at a position higher than the highest water level stored in the bottom of the toilet bowl, and a wash water supply path for supplying wash water to the jet discharge port. A toilet bowl is disclosed. In this toilet, a swirl flow swirling around the horizontal axis is formed by the wash water discharged from the jet discharge port. It is described that sewage can be fed into the trap portion by this swirl flow, and sewage can be effectively discharged.
特開2008-45276号公報JP 2008-45276 A
 本発明者は、特許文献1の構造に関して検討した結果、以下の課題を認識するに至った。特許文献1の便器では、便器洗浄後、洗浄水供給路に残留した残留水が、すじ状の水(以下、すじ状水という)となって、ジェット吐出口から便鉢部の内面を伝って流れ落ちてしまう。このすじ状水は、便鉢部の内面を伝う経路を不規則に変えながら流れるうえ、長期間に亘って流れ落ちることもあり、見栄えの低下を招く原因となる。 As a result of studying the structure of Patent Document 1, the present inventor has recognized the following problems. In the toilet of Patent Document 1, residual water remaining in the cleaning water supply path after toilet cleaning becomes streak-like water (hereinafter referred to as streak-like water), which travels from the jet outlet to the inner surface of the toilet bowl. It will flow down. This streak-like water flows while irregularly changing the path along the inner surface of the toilet bowl, and may flow down over a long period of time, causing a decrease in appearance.
 第1発明は、このような課題に鑑みてなされ、その目的は、便器洗浄に起因する便鉢部内の見栄えの低下を防止できる水洗大便器を提供することにある。 The 1st invention is made in view of such a subject, and the object is to provide the flush toilet which can prevent the fall of the appearance in the toilet bowl part resulting from toilet bowl washing.
2.大便器の便鉢部には、洗浄水を吐き出すための開口として、リム吐水孔の他にジェット吐出孔が形成されることがある。リム吐水孔は、便鉢部のリム部に形成され、リム吐水孔から吐き出される洗浄水により便鉢部全体が洗浄される。ジェット吐出孔は、便鉢部の底部等に形成され、ジェット吐出孔から吐き出される洗浄水により、汚物の排出を促進するための水流が形成される。 2. In the toilet bowl portion of the toilet bowl, a jet discharge hole may be formed in addition to the rim water discharge hole as an opening for discharging wash water. The rim water spouting hole is formed in the rim part of the toilet bowl part, and the entire toilet bowl part is washed with the washing water discharged from the rim water spouting hole. The jet discharge hole is formed at the bottom of the toilet bowl, and a water flow for promoting the discharge of filth is formed by the wash water discharged from the jet discharge hole.
 例えば、特許文献1の図1には、リム部の外周側にリム通水路を形成し、リム通水路の途中位置から分岐するジェット用連通路を形成した便器が開示されている。この便器では、リム通水路に供給される洗浄水を、リム吐水孔から吐き出すとともに、ジェット用連通路を通してジェット吐出孔から吐き出す構造となっている。 For example, FIG. 1 of Patent Document 1 discloses a toilet in which a rim water passage is formed on the outer peripheral side of the rim portion, and a jet communication passage that branches off from a middle position of the rim water passage is formed. This toilet has a structure in which the cleaning water supplied to the rim water passage is discharged from the rim water discharge hole and discharged from the jet discharge hole through the jet communication passage.
 ところで、特許文献1の便器では、リム通水路の始端側から終端側に向かう経路の途中位置にジェット用連通路の水導入口が開口している。よって、リム通水路内の洗浄水はジェット用連通路に流れ方向を変えずにリム吐水孔に向けて流れ易くなっている。このため、リム通水路からジェット用連通路に洗浄水を取り込み難く、ジェット吐出孔から吐き出される洗浄水の勢いが弱いという問題点がある。 By the way, in the toilet of Patent Document 1, the water inlet of the jet communication passage opens at a midway position along the path from the start side to the end side of the rim water passage. Therefore, the cleaning water in the rim water passage can easily flow toward the rim water discharge hole without changing the flow direction to the jet communication passage. For this reason, there is a problem that it is difficult to take in the cleaning water from the rim water passage to the jet communication passage, and the momentum of the cleaning water discharged from the jet discharge hole is weak.
 これを改善するため、特許文献1の図5のように、リム部の外周側に左右二つのリム通水路を形成し、一方のリム通水路にはリム吐水孔を形成し、他方のリム通水路はジェット用連通路に連通する構造にすることも考えられる。 In order to improve this, as shown in FIG. 5 of Patent Document 1, two right and left rim water passages are formed on the outer peripheral side of the rim portion, one rim water passage is formed with a rim water discharge hole, and the other rim passage is formed. It is also conceivable that the water channel is structured to communicate with the jet communication passage.
 ここで、洗浄態様の自由度を高めるため、リム部に複数のリム吐水孔を形成し、二つのリム通水路のそれぞれに供給される洗浄水を、別々のリム吐水孔から吐き出すように構成することがある。特許文献1の便器は、リム部に単数のリム吐水孔しか形成されておらず、このような複数のリム吐水孔がある場合を想定したものではない。また、特許文献1の便器は、このような複数のリム吐水孔を設けつつ、ジェット吐出孔から勢いよく洗浄水を吐き出せるように工夫したものでもない。 Here, in order to increase the degree of freedom of the cleaning mode, a plurality of rim water discharge holes are formed in the rim portion, and the cleaning water supplied to each of the two rim water passages is discharged from separate rim water discharge holes. Sometimes. The toilet of Patent Document 1 has only a single rim water discharge hole formed in the rim portion, and it is not assumed that there are a plurality of such rim water discharge holes. Moreover, the toilet bowl of patent document 1 is not what devised so that a wash water could be spit out vigorously from a jet discharge hole, providing such a some rim water discharge hole.
 第2の発明は、このような課題に鑑みてなされ、その目的は、左右のリム通水路を通してリム吐水孔から洗浄水を吐き出しつつ、吐出孔から勢いよく洗浄水を吐き出せる水洗大便器を提供することにある。 The second invention is made in view of such a problem, and an object thereof is to provide a flush toilet capable of expelling wash water from the discharge holes while expelling wash water from the rim water discharge holes through the right and left rim water passages. There is to do.
 上記課題を解決するための第1発明の第1態様は水洗大便器である。水洗大便器は、便鉢部と、前記便鉢部の底部に接続され、前記底部に溜められる溜水の非洗浄時の水位を定めるトラップ部と、前記底部に形成されるジェット吐出口と、前記ジェット吐出口に洗浄水を供給するためのジェット用給水路と、を有し、前記ジェット吐出口から洗浄水を吐き出すことにより、該底部内に水流を形成する吐水部と、を備え、前記ジェット吐出口は、非洗浄時の前記溜水の水位を上下に跨がるように形成される。ここでの「非洗浄時」とは、便鉢部内の洗浄を開始する前の待機状態にある時をいう。 The first aspect of the first invention for solving the above problems is a flush toilet. The flush toilet is a stool part, a trap part that is connected to the bottom part of the stool part and determines the level of non-washed water stored in the bottom part, and a jet outlet formed in the bottom part, A jet water supply channel for supplying cleaning water to the jet discharge port, and a water discharge unit that forms a water flow in the bottom by discharging the wash water from the jet discharge port, The jet discharge port is formed so as to straddle the level of the stored water when not washed. “Non-cleaning” here means when the toilet bowl is in a standby state before starting cleaning.
 この態様によれば、ジェット吐出口の下側部分が非洗浄時の溜水に水没した状態になる。よって、便器洗浄後、ジェット吐出口から吐き出される水を、便鉢部の内面を伝わせずに溜水に合流させ易くなる。このため、便器洗浄後、ジェット吐出口から便鉢部の内面へのすじ状水の流れ落ちを抑えることで、便器洗浄に起因する便鉢部内の見栄えの低下を防止できる。 According to this aspect, the lower part of the jet discharge port is submerged in the stored water at the time of non-cleaning. Therefore, it becomes easy to join the water discharged from the jet outlet after flushing the toilet bowl to the stored water without passing along the inner surface of the toilet bowl. For this reason, after toilet bowl washing | cleaning, the fall of the appearance in the toilet bowl part resulting from toilet bowl washing | cleaning can be prevented by suppressing the flow-down of the streaky water from a jet discharge port to the inner surface of a toilet bowl part.
 上記課題を解決するための第2の発明の第1態様は水洗大便器である。水洗大便器は、リム部が上端部に形成される便鉢部と、前記リム部の外周側に形成される左右一方側の第1リム通水路と、前記リム部の外周側に形成される左右他方側の第2リム通水路と、前記第1リム通水路内から前記便鉢部内に吐水するための第1リム吐水孔と、前記第2リム通水路内から前記便鉢部内に吐水するための第2リム吐水孔と、前記便鉢部の底部、又は、該底部に接続される排水通路部に形成される吐出孔と、前記第1リム通水路と前記吐出孔を連通する連通路と、を備え、前記第1リム吐水孔は、前記第1リム通水路の始端側より終端側に向かう経路の途中位置から分岐して形成され、前記連通路の水導入口は、前記第1リム吐水孔より前記第1リム通水路の終端側に開口することを特徴とする。 The first aspect of the second invention for solving the above problem is a flush toilet. The flush toilet is formed on the outer rim portion of the rim portion, the toilet rim portion having the rim portion formed on the upper end portion, the first rim water passage on the left and right sides formed on the outer peripheral side of the rim portion, and the rim portion. The second rim water passage on the left and right sides, the first rim water discharge hole for discharging water from the first rim water passage into the toilet bowl, and the water discharged from the second rim water passage into the toilet bowl. A second rim water discharge hole, a discharge hole formed in a bottom portion of the toilet bowl portion or a drainage passage portion connected to the bottom portion, a communication passage communicating the first rim water passage and the discharge hole The first rim water discharge hole is formed by branching from a middle position of the path from the start end side to the terminal end side of the first rim water passage, and the water inlet of the communication path is the first It opens to the terminal side of the first rim water passage from the rim water discharge hole.
 この態様によれば、第1リム通水路の終端部まで流れ込んだ洗浄水は、そこから流れ方向を変えるしかなく、その近傍にある水導入口に流れ方向を変えて導入され易くなる。よって、第1リム通水路から連通路に洗浄水を取り込み易くなり、高水圧の洗浄水を吐出孔から吐き出し易くなる。この結果、左右のリム通水路に洗浄水を供給して複数のリム吐水孔から洗浄水を吐き出しつつ、吐出孔から勢いよく洗浄水を吐き出せるようになる。 According to this aspect, the wash water that has flowed to the end portion of the first rim water passage has only to change the flow direction from there, and can be easily introduced into the water introduction port in the vicinity thereof by changing the flow direction. Therefore, it becomes easy to take in the washing water from the first rim water passage to the communication passage, and it becomes easy to discharge the high-pressure washing water from the discharge hole. As a result, the cleaning water can be discharged from the discharge holes vigorously while supplying the cleaning water to the right and left rim water passages and discharging the cleaning water from the plurality of rim water discharge holes.
第1実施形態に係る水洗大便器の平面図である。It is a top view of the flush toilet concerning a 1st embodiment. 図2は図1のA-A線断面図である。2 is a cross-sectional view taken along line AA in FIG. 図2のB-B線断面図である。FIG. 3 is a sectional view taken along line BB in FIG. 図2の便鉢部のC-C線断面を示す図である。FIG. 3 is a cross-sectional view taken along the line CC of the toilet bowl portion of FIG. 2. 第1実施形態に係るジェット用給水路内での洗浄水の流れ方を示す模式図であり、図5(a)は便器洗浄の開始前の状態を示し、図5(b)は便器洗浄の途中状態を示す。It is a schematic diagram which shows the flow of the wash water in the water supply channel for jets concerning 1st Embodiment, Fig.5 (a) shows the state before the start of toilet bowl washing | cleaning, FIG.5 (b) shows toilet bowl washing | cleaning. Indicates a midway condition. 第1変形例に係るジェット用給水路内での洗浄水の流れ方を示す模式図であり、図6(a)は便器洗浄の開始前の状態を示し、図6(b)は便器洗浄の途中状態を示し、図6(c)は更に後の途中状態を示す。It is a schematic diagram which shows the flow of the washing water in the jet water supply channel which concerns on a 1st modification, FIG.6 (a) shows the state before the start of toilet bowl washing | cleaning, FIG.6 (b) shows toilet bowl washing | cleaning. An intermediate state is shown, and FIG. 6C shows a further intermediate state. 第1実施形態に係るリム通水路の内底面に形成される勾配を模式的に示す図である。It is a figure which shows typically the gradient formed in the inner bottom face of the rim water passage which concerns on 1st Embodiment. 第1実施形態に係る便鉢部内での洗浄水の流れ方を示す図である。It is a figure which shows how the wash water flows in the toilet bowl part which concerns on 1st Embodiment. ジェット吐出口から洗浄水が吐き出される前にリム吐水口から吐き出される洗浄水が着水した場合の状態を示す模式図である。It is a schematic diagram which shows the state at the time of the washing water discharged from a rim water discharge port landing before washing water is discharged from a jet discharge port. 第1実施形態に係る便鉢部内での溜水の水位の変わり方を示す模式図である。It is a schematic diagram which shows how to change the water level of the stored water in the toilet bowl part which concerns on 1st Embodiment. 第2実施形態に係る水洗大便器の平面図である。It is a top view of the flush toilet concerning a 2nd embodiment. 図12は図11のA-A線断面図である。12 is a cross-sectional view taken along line AA in FIG. 図12のB-B線断面図である。FIG. 13 is a sectional view taken along line BB in FIG. 12. 図13の左リム通水路の拡大図である。It is an enlarged view of the left rim water passage of FIG. 図14のD-D線断面図であるIt is the DD sectional view taken on the line of FIG. 図14のE-E線断面図である。It is the EE sectional view taken on the line of FIG. 第2実施形態に係る各リム通水路の内底面に形成される勾配を模式的に示す図である。It is a figure which shows typically the gradient formed in the inner bottom face of each rim water passage which concerns on 2nd Embodiment. 図18(a)は第1変形例に係る左リム通水路を示す図であり、図18(b)は絞り部に関する説明図である。FIG. 18A is a view showing the left rim water passage according to the first modified example, and FIG. 18B is an explanatory view concerning the throttle portion. 図15の絞り部に関する説明図である。It is explanatory drawing regarding the aperture | diaphragm | squeeze part of FIG. 第2変形例に係る絞り部を示す図である。It is a figure which shows the aperture | diaphragm | squeeze part which concerns on a 2nd modification.
 以下、実施形態、変形例では、同一の構成要素に同一の符号を付し、重複する説明を省略する。また、各図面では、説明の便宜のため、構成要素の一部を適宜省略する。 Hereinafter, in the embodiment and the modification, the same reference numerals are given to the same components, and the duplicate description is omitted. Moreover, in each drawing, a part of component is abbreviate | omitted suitably for convenience of explanation.
1.第1発明の好ましい実施の形態を説明する。 1. A preferred embodiment of the first invention will be described.
 図1は第1実施形態に係る水洗大便器10の平面図である。
 水洗大便器10は、陶器を素材とする便器本体12を備える。便器本体12は、トイレ室の側壁面100に掛けた状態で取り付けられる壁掛け型便器である。
FIG. 1 is a plan view of a flush toilet 10 according to the first embodiment.
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.
 図2は図1のA-A線断面図である。
 便器本体12は、図1に示すように、便器本体12の前部に形成される便鉢部14と、便鉢部14の底部に接続されるトラップ部18とを備える。トラップ部18は、便鉢部14の底部に形成される入口16(図1も参照)を通して便鉢部14内に連通する。
2 is a cross-sectional view taken along line AA in FIG.
As shown in FIG. 1, the toilet main body 12 includes a toilet bowl 14 formed at the front of the toilet main body 12 and a trap 18 connected to the bottom of the toilet bowl 14. The trap portion 18 communicates with the stool portion 14 through an inlet 16 (see also FIG. 1) formed at the bottom of the stool portion 14.
 図3は図2のB-B線断面図である。
 便鉢部14は、図2、図3に示すように、汚物を受けるための鉢状の受け面部20と、受け面部20の下縁部から下方に窪んで形成されるとともに便鉢部14の底部を形成する凹部22と、受け面部20の上縁部に接続されるとともに便鉢部14の上端部を形成するリム部24と、を備える。受け面部20は、平面視にて左右寸法より前後寸法が大きくなるような楕円状に形成される。凹部22は有底筒状に形成され、その底面部にはトラップ部18の入口16が開口する。
3 is a cross-sectional view taken along line BB in FIG.
As shown in FIGS. 2 and 3, the toilet bowl portion 14 is formed with a bowl-shaped receiving surface portion 20 for receiving filth and a recess recessed downward from the lower edge portion of the receiving surface portion 20, and the toilet bowl portion 14. A recess 22 that forms the bottom, and a rim 24 that is connected to the upper edge of the receiving surface 20 and forms the upper end of the toilet bowl 14 are provided. The receiving surface portion 20 is formed in an elliptical shape whose front and rear dimensions are larger than the left and right dimensions in plan view. The concave portion 22 is formed in a bottomed cylindrical shape, and the inlet 16 of the trap portion 18 opens at the bottom surface portion thereof.
 便器本体12は、図3に示すように、便鉢部14内に洗浄水を吐き出すための吐水部26を更に備える。吐水部26は、便鉢部14の凹部22に形成されるジェット吐出口28と、便鉢部14のリム部24に形成される二つのリム吐水口30A、30Bと、を有する。吐水部26は、ジェット吐出口28から洗浄水を吐き出すことにより、汚物の排出を促進するための水流を便鉢部14の凹部22内に形成する。また、吐水部26は、二つのリム吐水口30A、30Bから洗浄水を吐き出すことにより、便鉢部14の内面を洗浄するための水流を形成する。水洗大便器10は、吐水部26、特に、ジェット吐出口28に主な特徴の一つがあるが、先に周辺構造から説明する。 As shown in FIG. 3, the toilet body 12 further includes a water discharge portion 26 for discharging the wash water into the toilet bowl portion 14. The water discharge portion 26 has a jet discharge port 28 formed in the recess 22 of the toilet bowl portion 14 and two rim water discharge ports 30A and 30B formed in the rim portion 24 of the toilet bowl portion 14. The water discharge part 26 forms the water flow for promoting discharge | emission of filth in the recessed part 22 of the toilet bowl part 14 by discharging wash water from the jet discharge port 28. As shown in FIG. Moreover, the water discharge part 26 forms the water flow for wash | cleaning the inner surface of the toilet bowl part 14 by discharging wash water from the two rim water discharge ports 30A and 30B. Although the flush toilet 10 has one of the main features in the water discharge part 26, especially the jet discharge port 28, it demonstrates from a periphery structure first.
 トラップ部18は、図2に示すように、上流側から下流側にかけて順に第1水路部32、第2水路部34及び第3水路部36を有する。第1水路部32は、トラップ部18の入口16から下降するように形成される。第2水路部34は、第1水路部32の下流端部に対して後方に上流端部が接続され、その上流端部から上昇するように形成される。第3水路部36は、第2水路部34の下流端部に対して後方に上流端部が接続され、その上流端部から後方に延び出るように形成される。第3水路部36の下流端部には排水管102が接続され、トラップ部18及び排水管102の内部を通して汚物が下水側水路に排出される。 As shown in FIG. 2, the trap unit 18 includes a first water channel unit 32, a second water channel unit 34, and a third water channel unit 36 in order from the upstream side to the downstream side. The first water channel portion 32 is formed so as to descend from the inlet 16 of the trap portion 18. The second water channel portion 34 is formed so that the upstream end portion is connected to the downstream end of the first water channel portion 32 in the rear and rises from the upstream end portion. The third water channel portion 36 is formed such that the upstream end portion is connected to the downstream end of the second water channel portion 34 rearward and extends rearward from the upstream end portion. A drain pipe 102 is connected to the downstream end of the third water channel portion 36, and filth is discharged to the sewage side water channel through the trap unit 18 and the inside of the drain tube 102.
 トラップ部18には通水方向の空気の流れを遮断する封水38が第1水路部32及び第2水路部34の内部に溜められる。下水側水路からの臭気の逆流は封水38により防がれる。第2水路部34と第3水路部36の境界部分には内部を通る水の通水方向が変わる曲げ部40が形成される。曲げ部40の曲げ内側に配置される内壁面の上端縁42は、トラップ部18内の封水38の非洗浄時の水位を定める溢れ縁(以下、「溢れ縁42」という)となる。ここでの「非洗浄時」とは、便鉢部14内の洗浄を開始する前の待機状態にある時をいう。トラップ部18内の封水38が溢れ縁42を超えると、その溢れ縁42からトラップ部18内の封水38が下流側にあふれ出る。 Sealed water 38 that blocks the flow of air in the direction of water flow is stored in the trap unit 18 inside the first water channel unit 32 and the second water channel unit 34. Odor reverse flow from the sewage side channel is prevented by the sealing water 38. A bent portion 40 is formed at the boundary portion between the second water channel portion 34 and the third water channel portion 36 to change the water flow direction of water passing through the inside. The upper end edge 42 of the inner wall surface disposed inside the bent portion 40 is an overflow edge (hereinafter referred to as “overflow edge 42”) that determines the water level when the sealing water 38 in the trap portion 18 is not washed. Here, “at the time of non-washing” refers to a time when the toilet bowl 14 is in a standby state before starting washing. When the sealing water 38 in the trap portion 18 exceeds the overflow edge 42, the sealing water 38 in the trap portion 18 overflows from the overflow edge 42 to the downstream side.
 トラップ部18内の封水38の一部は便鉢部14の底部に溜水44として溜められる。溜水44の非洗浄時の水位WL1(以下、初期水位WL1という)は、封水38と同様、溢れ縁42の鉛直方向での位置に応じて定められる。 A part of the sealing water 38 in the trap part 18 is stored as the stored water 44 at the bottom of the toilet bowl part 14. The water level WL1 when the stored water 44 is not washed (hereinafter referred to as the initial water level WL1) is determined according to the position of the overflow edge 42 in the vertical direction, similar to the sealed water 38.
 リム部24には、図3に示すように、二つのリム吐水口30A、30Bのそれぞれから便鉢部14の周方向の一方側(本図では反時計回り方向)に延びるように二つのリム導水路48が形成される。リム導水路48は、リム吐水口30A、30Bから吐き出される洗浄水を旋回させるように導くことにより、リム導水路48の始端位置から終端位置まで洗浄水を届かせるためのものである。 As shown in FIG. 3, the rim portion 24 has two rims extending from each of the two rim spouts 30 </ b> A and 30 </ b> B to one side in the circumferential direction of the stool portion 14 (counterclockwise direction in this figure). A water conduit 48 is formed. The rim water channel 48 is for guiding the cleaning water discharged from the rim water outlets 30 </ b> A and 30 </ b> B to swivel so that the cleaning water can reach the rim water channel 48 from the start end position to the end position.
 吐水部26は、ジェット吐出口28と、二つのリム吐水口30A、30Bとの他に、流入口54と、右リム通水路56A(第1通水路)と、左リム通水路56B(第2通水路)と、ジェット用給水路58と、を有する。ジェット吐出口28の詳細は後述し、他の構成を先に説明する。 In addition to the jet discharge port 28 and the two rim water discharge ports 30A and 30B, the water discharge unit 26 has an inflow port 54, a right rim water passage 56A (first water passage), and a left rim water passage 56B (second water passage). A water supply channel) and a jet water supply channel 58. Details of the jet outlet 28 will be described later, and other configurations will be described first.
 二つのリム吐水口30A、30Bには、右リム吐水口30A(第1吐水口)と左リム吐水口30B(第2吐水口)とが含まれる。右リム吐水口30Aは、図1に示すように、便器本体12の左右中心線CLに対して右側であって、便鉢部14の前後方向での中間位置に配置される。左リム吐水口30Bは、便器本体12の左右中心線CLに対して左側であって、便鉢部14の後部に配置される。ここでの左右中心線CLとは便器本体12の外面部分の左右寸法を二等分して前後方向に沿って延びる直線をいう。二つのリム吐水口30A、30Bからは、リム部24の内周面に沿って周方向の一方側に向けて洗浄水が吐き出される。 The two rim spouts 30A and 30B include a right rim spout 30A (first spout) and a left rim spout 30B (second spout). As shown in FIG. 1, the right rim water spouting port 30 </ b> A is arranged on the right side with respect to the left-right center line CL of the toilet body 12 and at an intermediate position in the front-rear direction of the toilet bowl 14. The left rim spout 30 </ b> B is disposed on the left side with respect to the left-right center line CL of the toilet body 12 and is disposed at the rear of the toilet bowl 14. Here, the left-right center line CL is a straight line extending in the front-rear direction by equally dividing the left-right dimension of the outer surface portion of the toilet body 12. Wash water is spouted from the two rim spouts 30 </ b> A and 30 </ b> B toward one side in the circumferential direction along the inner peripheral surface of the rim portion 24.
 流入口54には、図2に示すように、洗浄水供給装置104の一部となる送水管104aから供給される洗浄水が流入する。図3では、送水管104aから流入口54を通して吐水部26内に流入する洗浄水の通水経路Wpを示す。 As shown in FIG. 2, cleaning water supplied from a water supply pipe 104 a that is a part of the cleaning water supply device 104 flows into the inlet 54. In FIG. 3, the water flow path Wp of the wash water flowing into the water discharge section 26 from the water supply pipe 104a through the inlet 54 is shown.
 右リム通水路56A及び左リム通水路56Bは、流入口54から流入した洗浄水を分岐させて流すためのものである。右リム通水路56Aを流れる洗浄水は右リム吐水口30Aに供給され、左リム通水路56Bを流れる洗浄水は左リム吐水口30Bに供給される。右リム通水路56A及び左リム通水路56Bの分岐元となる分岐位置60はリム部の後方かつ裏側に配置される。 The right rim water passage 56 </ b> A and the left rim water passage 56 </ b> B are for branching the wash water flowing in from the inflow port 54. The washing water flowing through the right rim water passage 56A is supplied to the right rim water outlet 30A, and the washing water flowing through the left rim water passage 56B is supplied to the left rim water outlet 30B. A branch position 60 that is a branch source of the right rim water passage 56A and the left rim water passage 56B is disposed at the rear and back side of the rim portion.
 右リム通水路56Aは、分岐位置60からリム部24の裏側にて周方向の一方側(反時計回り方向)に延びるように形成される。右リム通水路56Aの下流端には右リム吐水口30Aが形成される。 The right rim water passage 56 </ b> A is formed to extend from the branch position 60 to one side (counterclockwise direction) in the circumferential direction on the back side of the rim portion 24. A right rim water outlet 30A is formed at the downstream end of the right rim water passage 56A.
 左リム通水路56Bは、分岐位置60からリム部24の裏側にて周方向の他方側(時計回り方向)に延びるように形成される。左リム通水路56Bは延びる方向の先端部が行き止まりとなるように形成される。左リム通水路56Bの途中位置には周方向の一方側(反時計回り方向)かつ径方向内側に延びるように分岐水路62が形成される。分岐水路62の下流端には左リム吐水口30Bが形成される。 The left rim water passage 56 </ b> B is formed to extend from the branch position 60 to the other side (clockwise direction) in the circumferential direction on the back side of the rim portion 24. The left rim water passage 56 </ b> B is formed such that the end in the extending direction becomes a dead end. A branch water passage 62 is formed in the middle of the left rim water passage 56B so as to extend to one side in the circumferential direction (counterclockwise direction) and radially inward. A left rim spout 30 </ b> B is formed at the downstream end of the branch water channel 62.
 ジェット用給水路58は、図2、図3に示すように、左リム通水路56Bの先端部に接続される。ジェット用給水路58は、ジェット吐出口28に洗浄水を供給するためのものである。左リム通水路56Bの内底面にはジェット用給水路58内に洗浄水を導入するための導入口64が形成される。ジェット用給水路58は、導入口64とジェット吐出口28とをつなぐように形成される。詳しくは、ジェット用給水路58は、導入口64から下方に向かって延びる第1部分58aと、第1部分58aの下流端部から周方向の他方側(本図の時計回り方向)かつ下方に向かって曲がりながら延びる第2部分58bと、を有する。第2部分58bは、便鉢部14の側部の裏側からジェット吐出口28の裏側にかけて曲がりながら延びる。ジェット用給水路58は、さらに、第2部分58bの下流端部からジェット吐出口28に向かって後方に延びる第3部分58cを有する。 The water supply channel 58 for jets is connected to the tip of the left rim water channel 56B as shown in FIGS. The jet water supply channel 58 is for supplying cleaning water to the jet discharge port 28. An inlet 64 for introducing cleaning water into the jet water supply path 58 is formed on the inner bottom surface of the left rim water passage 56B. The jet water supply path 58 is formed so as to connect the introduction port 64 and the jet discharge port 28. Specifically, the jet water supply channel 58 includes a first portion 58a extending downward from the introduction port 64, and a downstream side of the first portion 58a on the other side in the circumferential direction (clockwise direction in the figure) and downward. And a second portion 58b that extends while being bent. The second portion 58 b extends while bending from the back side of the side portion of the toilet bowl portion 14 to the back side of the jet discharge port 28. The jet water supply path 58 further includes a third portion 58c extending rearward from the downstream end portion of the second portion 58b toward the jet discharge port 28.
 ジェット吐出口28は、便鉢部14の凹部22の左側かつ前側の壁面に形成される。ジェット吐出口28からは、二つのリム吐水口30A、30Bからの洗浄水の吐き出し方向と同様に、便鉢部14の凹部22内に周方向の一方側(時計回り方向)に向けて洗浄水が吐き出される。ジェット吐出口28からは水平方向に沿うように洗浄水が吐き出される。ここでの「水平方向に沿うように」とは、洗浄水の吐き出し方向が水平面と平行な場合と、ほぼ平行な場合との両方が含まれる。 The jet discharge port 28 is formed on the wall surface on the left side and the front side of the recess 22 of the toilet bowl 14. From the jet discharge port 28, the wash water is directed toward one side in the circumferential direction (clockwise direction) in the concave portion 22 of the toilet bowl 14, similarly to the discharge direction of the wash water from the two rim water discharge ports 30A, 30B. Is exhaled. Wash water is discharged from the jet outlet 28 along the horizontal direction. Here, “to be along the horizontal direction” includes both the case where the discharge direction of the washing water is parallel to the horizontal plane and the case where it is substantially parallel.
 図4は図2の便鉢部14のC-C線断面を示す図である。
 ジェット吐出口28は、図2、図4に示すように、溜水44の初期水位WL1を上下に跨がるように形成される。ジェット吐出口28の上側部分は溜水44の初期水位WL1より上側に配置され、その内側を通してジェット用給水路58内と便鉢部14内との大気空間が連通した状態になる。ジェット吐出口28の下側部分は溜水44の初期水位WL1より下側に配置され、その溜水44内に水没した状態になる。詳しくは、ジェット吐出口28の下縁28aが初期水位WL1より下側に配置される。この下縁28aは、ジェット吐出口28内を通る水に対して鉛直下側に位置するジェット吐出口28の一部分である。
4 is a cross-sectional view taken along the line CC of the toilet bowl portion 14 of FIG.
As shown in FIGS. 2 and 4, the jet discharge port 28 is formed so as to straddle the initial water level WL <b> 1 of the stored water 44. The upper portion of the jet outlet 28 is disposed above the initial water level WL1 of the stored water 44, and the air space in the jet water supply channel 58 and the toilet bowl portion 14 are in communication with each other through the inside. The lower portion of the jet outlet 28 is disposed below the initial water level WL1 of the stored water 44 and is submerged in the stored water 44. Specifically, the lower edge 28a of the jet discharge port 28 is disposed below the initial water level WL1. The lower edge 28a is a part of the jet discharge port 28 that is located vertically below the water passing through the jet discharge port 28.
 以上の水洗大便器10の作用効果を説明する。
(1)水洗大便器10のジェット吐出口28は溜水44の初期水位WL1を上下に跨がるように形成され、その下側部分が初期水位の溜水44に水没した状態になる。よって、便器洗浄後、ジェット用給水路58を通してジェット吐出口28まで到達した補給水、残留水等の水を、便鉢部14の内面を伝わせずに溜水44に合流させられる。このため、便器洗浄後、ジェット吐出口28から便鉢部14の内面へのすじ状水の流れ落ちを抑えることで、便器洗浄に起因する便鉢部14内の見栄えの低下を防止できる。なお、ここでの「補給水」とは、便器洗浄により溜水44がトラップ部18を通して排出された後、再び溜水44を初期水位WL1まで溜めるために供給される水をいう。また、「残留水」とは、洗浄水供給装置104からの洗浄水の供給終了後、リム通水路56A、56B、ジェット用給水路58内に残留している水をいう。
The effect of the flush toilet 10 will be described.
(1) The jet outlet 28 of the flush toilet 10 is formed so as to straddle the initial water level WL1 of the stored water 44 up and down, and the lower part thereof is submerged in the stored water 44 at the initial water level. Therefore, after cleaning the toilet bowl, water such as make-up water and residual water that has reached the jet outlet 28 through the jet water supply channel 58 can be merged with the stored water 44 without being transmitted along the inner surface of the toilet bowl 14. For this reason, after toilet bowl washing | cleaning, the fall of the appearance in the toilet bowl part 14 resulting from toilet bowl washing | cleaning can be prevented by suppressing the flow of the streak-like water from the jet discharge port 28 to the inner surface of the toilet bowl part 14. FIG. Here, “replenishment water” refers to water that is supplied in order to store the accumulated water 44 again to the initial water level WL1 after the accumulated water 44 is discharged through the trap portion 18 by toilet flushing. “Residual water” refers to water remaining in the rim water passages 56A and 56B and the jet water supply passage 58 after the supply of the cleaning water from the cleaning water supply device 104 is completed.
 また、仮に、ジェット吐出口28から便鉢部14の内面にすじ状水が流れ落ちると、すじ状水の一部が便鉢部14の内面に付着した状態のまま残留してしまう場合がある。この場合、便鉢部14の内面に付着した水の水質によっては、その水の蒸発後に付着位置に汚れができてしまう。この点、本実施形態によれば、ジェット吐出口28から便鉢部14の内面へのすじ状水の流れ落ちを抑えられるため、すじ状水の残留による便鉢部14の内面の汚れを抑えられ、便器洗浄に起因する便鉢部14内の見栄えの低下を防止できる。また、すじ状水の残留による便鉢部14の内面の汚れを抑えることで、便鉢部14内を清潔に保つこともできる。 Also, if streaky water flows down from the jet discharge port 28 to the inner surface of the toilet bowl 14, a part of the streaky water may remain attached to the inner surface of the toilet bowl 14. In this case, depending on the quality of the water adhering to the inner surface of the toilet bowl portion 14, the adhering position may become dirty after the water evaporates. In this respect, according to the present embodiment, since the flow of streaky water from the jet discharge port 28 to the inner surface of the toilet bowl portion 14 can be suppressed, contamination of the inner surface of the toilet bowl portion 14 due to residual streaky water can be suppressed. Moreover, the fall of the appearance in the toilet bowl part 14 resulting from toilet bowl washing | cleaning can be prevented. Moreover, the inside of the toilet bowl part 14 can also be kept clean by suppressing the stain | pollution | contamination of the inner surface of the toilet bowl part 14 by residual streak-like water.
 また、ジェット吐出口28は溜水44の初期水位WL1を上下に跨がるように形成され、ジェット吐出口28の上側部分の内側を通してジェット用給水路58と便鉢部14内との大気空間が連通した状態になる。この利点を説明する。 The jet outlet 28 is formed so as to straddle the initial water level WL <b> 1 of the stored water 44, and the atmospheric space between the jet water supply path 58 and the toilet bowl 14 through the inside of the upper part of the jet outlet 28. Will be in communication. This advantage will be described.
 図5はジェット用給水路58内での洗浄水の流れ方を示す模式図である。図5(a)は便器洗浄の開始前の状態を示す。本図では、説明の便宜のため、便鉢部14、トラップ部18、ジェット用給水路58等の位置、寸法及び形状について、他図と異なるものを示す。 FIG. 5 is a schematic diagram showing how the washing water flows in the jet water supply channel 58. FIG. 5A shows a state before the start of toilet cleaning. In this figure, for convenience of explanation, the positions, dimensions, and shapes of the toilet bowl part 14, the trap part 18, the jet water supply channel 58, and the like are different from those in the other figures.
 左リム通水路56Bに洗浄水Wが供給されると、図5(b)に示すように、ジェット用給水路58内には導入口64から洗浄水が流入し、ジェット用給水路58の導入口64側から徐々に洗浄水が満たされる。ジェット用給水路58内への洗浄水Wの流入により、ジェット用給水路58内の空気は洗浄水Wによりジェット吐出口28側に押し出される(方向Pa参照)。このとき、前述のように、ジェット用給水路58内の大気空間はジェット吐出口28の上側部分の内側を通して便鉢部14内の大気空間と連通した状態になるため、ジェット用給水路58内の空気がジェット吐出口28内を通してスムーズに排気される(方向Pb参照)。仮に、ジェット吐出口28の全体が溜水44内に水没している場合、ジェット用給水路58内の空気が気泡になった状態でジェット吐出口28から吐き出されるため、気泡の破裂音が生じることで、使用者に不快感を与えかねない。この点、本実施形態によれば、便器洗浄時、ジェット吐出口28からの気泡の吐き出しを防止できるため、気泡の破裂音の発生を防止でき、便器洗浄動作の静音化を図ることができる。また、この他にも、ジェット吐出口28からの気泡の吐き出しを防止することで、見た目の面から使用者に違和感を与えるのを防止できる。 When the cleaning water W is supplied to the left rim water passage 56B, as shown in FIG. 5B, the cleaning water flows into the jet water supply path 58 from the introduction port 64, and the jet water supply path 58 is introduced. The washing water is gradually filled from the mouth 64 side. By the inflow of the cleaning water W into the jet water supply path 58, the air in the jet water supply path 58 is pushed out toward the jet discharge port 28 by the cleaning water W (see direction Pa). At this time, as described above, the atmospheric space in the jet water supply path 58 is in communication with the atmospheric space in the toilet bowl 14 through the inside of the upper portion of the jet discharge port 28. The air is smoothly exhausted through the jet outlet 28 (see direction Pb). If the entire jet discharge port 28 is submerged in the stored water 44, the air in the jet water supply channel 58 is discharged from the jet discharge port 28 in the state of bubbles, so that a bubble burst sound is generated. This may cause discomfort to the user. In this regard, according to the present embodiment, during the toilet bowl cleaning, the discharge of bubbles from the jet discharge port 28 can be prevented, so that the generation of a bubble burst sound can be prevented and the toilet cleaning operation can be made quieter. In addition to this, by preventing the discharge of bubbles from the jet discharge port 28, it is possible to prevent the user from feeling uncomfortable from the viewpoint of appearance.
 次に、水洗大便器10の他の特徴を説明する。
 ジェット用給水路58は、図5(a)に示すように、左リム通水路56Bより洗浄水が流入する導入口64からジェット吐出口28にかけての範囲において、非洗浄時に連続する大気空間66が存在するように形成される。ここでの「大気空間66」とは大気が満ちている空間をいう。これは、この範囲において、ジェット用給水路58の一部に通水方向の空気の流れを遮断する封水が溜められていないことを意味する。この利点を説明する。
Next, other features of the flush toilet 10 will be described.
As shown in FIG. 5A, the jet water supply path 58 has an air space 66 that is continuous during non-cleaning in the range from the inlet 64 through which the cleaning water flows from the left rim water passage 56B to the jet outlet 28. Formed to exist. The “atmospheric space 66” here is a space filled with the atmosphere. This means that, in this range, the sealed water that blocks the flow of air in the direction of water flow is not stored in part of the jet water supply path 58. This advantage will be described.
 図6は変形例に係るジェット用給水路58内での洗浄水の流れ方を示す模式図である。
 仮に、図6(a)に示すように、ジェット用給水路58に封水68が形成される場合を考える。この場合、ジェット用給水路58内には封水68により分断される上流側空気70と下流側空気72とが存在する状態になる。この状態で左リム通水路56Bから洗浄水がジェット用給水路58内に流入すると、図6(b)に示すように、上流側空気70が封水68とともに洗浄水Wにより方向Pcに押し出される。これにより、便鉢部14の底部内の溜水44に封水68が合流することで、図6(c)に示すように、ジェット用給水路58内に空気が残存した状態で、ジェット吐出口28が水没するまで溜水44が初期水位WL1から上昇する可能性がある(方向Pd参照)。この場合、その残存した空気が気泡になった状態でジェット吐出口28から排気されることにより(方向Pe参照)、気泡の破裂音が生じる可能性がある。
FIG. 6 is a schematic diagram showing how the washing water flows in the jet water supply path 58 according to the modification.
Suppose that a sealed water 68 is formed in the jet water supply path 58 as shown in FIG. In this case, an upstream side air 70 and a downstream side air 72 separated by the sealing water 68 exist in the jet water supply path 58. In this state, when cleaning water flows into the jet water supply channel 58 from the left rim water channel 56B, the upstream air 70 is pushed out in the direction Pc by the cleaning water W together with the sealing water 68, as shown in FIG. . As a result, the sealed water 68 merges with the stored water 44 in the bottom of the toilet bowl 14, and as shown in FIG. 6C, the jet discharge is performed with air remaining in the jet water supply path 58. The accumulated water 44 may rise from the initial water level WL1 until the outlet 28 is submerged (see direction Pd). In this case, there is a possibility that the bursting sound of the bubbles is generated by exhausting the remaining air in the state of bubbles from the jet discharge port 28 (see direction Pe).
 一方、前述の構成によれば、ジェット用給水路58内の封水68が形成されず、封水68が溜水44と合流することによる、溜水44の水位の上昇を防止できる。よって、ジェット用給水路58内に空気が残存した状態でジェット吐出口28の全体が水没し、ジェット吐出口28から気泡が排気されてしまう事態を防止でき、気泡の破裂音の発生を効果的に防止できる。 On the other hand, according to the above-described configuration, the sealed water 68 in the jet water supply channel 58 is not formed, and an increase in the water level of the stored water 44 due to the sealed water 68 joining with the stored water 44 can be prevented. Therefore, it is possible to prevent a situation in which the entire jet discharge port 28 is submerged and air bubbles are exhausted from the jet discharge port 28 in a state where air remains in the jet water supply channel 58, and it is possible to effectively generate a bubble burst sound. Can be prevented.
 なお、本例に係る水洗大便器10でも、ジェット吐出口28が溜水44の初期水位WL1を上下に跨がるように形成されるため、前述の(1)で説明した作用効果を得られる。 In the flush toilet 10 according to the present example as well, the jet discharge port 28 is formed so as to straddle the initial water level WL1 of the accumulated water 44, so that the function and effect described in (1) above can be obtained. .
 次に、ジェット吐出口28ではなく、リム吐水口30A、30Bからのすじ状水の流れ落ちを防止するための工夫点を説明する。 Next, a device for preventing the flow of streaky water from the rim spout ports 30A and 30B, not the jet discharge port 28, will be described.
 図7は各リム通水路56A、56Bの内底面に形成される勾配を模式的に示す図である。本図では高位置から低位置に向かう勾配を矢印により示す。
 各リム通水路56A、56Bの内底面には、各リム吐水口30A、30Bから奥側に向かうにつれて下り傾斜となる勾配が設けられる。詳しくは、右リム通水路56Aの内底面には右リム吐水口30Aが高位置となり、右リム通水路56A及び左リム通水路56Bの分岐元となる分岐位置60側が低位置となる第1勾配74が設けられる。第1勾配74は右リム吐水口30Aから奥側に向かうにつれて下り傾斜となるように設けられる。
FIG. 7 is a diagram schematically showing the gradient formed on the inner bottom surface of each rim water passage 56A, 56B. In this figure, the gradient from the high position to the low position is indicated by an arrow.
The inner bottom surface of each rim water passage 56A, 56B is provided with a gradient that becomes downwardly inclined from the rim water spouting ports 30A, 30B toward the back side. Specifically, the right rim water outlet 30A has a high position on the inner bottom surface of the right rim water passage 56A, and the first gradient in which the branch position 60 side, which is the branching source of the right rim water passage 56A and the left rim water passage 56B, has a low position. 74 is provided. The first gradient 74 is provided so as to be inclined downward from the right rim water spouting port 30A toward the back side.
 また、左リム通水路56Bの内底面には、前述の分岐位置60側が高位置となり、ジェット用給水路58の導入口64が低位置となる第2勾配76が設けられる。第2勾配76は、左リム吐水口30Bから奥側に向かうにつれて下り傾斜となるように設けられる。また、左リム通水路56Bの内底面には、行き止まりとなる先端位置56Baが高位置となり、ジェット用給水路58の導入口64が低位置となる第3勾配78が設けられる。なお、各リム通水路56A、56Bの分岐位置60には下向きに窪む窪み部80が形成される。 Also, a second gradient 76 is provided on the inner bottom surface of the left rim water passage 56B so that the aforementioned branching position 60 side is at a high position and the inlet 64 of the jet water supply passage 58 is at a low position. The second gradient 76 is provided so as to be inclined downward from the left rim spout 30B toward the back side. Further, a third slope 78 is provided on the inner bottom surface of the left rim water passage 56B so that the tip position 56Ba that becomes a dead end becomes a high position and the inlet 64 of the jet water supply passage 58 becomes a low position. In addition, the recessed part 80 recessed downward is formed in the branch position 60 of each rim water passage 56A, 56B.
 以上の構成の利点を説明する。洗浄水供給装置104からの洗浄水の供給が終了し、各リム吐水口30A、30Bの下縁近くまで各リム通水路56A、56B内の水位が下がった状況を考える。この状況のとき、各リム通水路56A、56Bの内底面上の残留水、補給水等の水は、第1勾配74、第2勾配76により、各リム吐水口30A、30Bから離れる方向に自重によって流れ易くなる。つまり、各リム通水路56A、56Bの内底面上の水が各リム吐水口30A、30Bに近づき難くなり、各リム吐水口30A、30Bを通して便鉢部14内にまで流れ難くなる。これにより、前述の状況のように各リム通水路56A、56B内の水位が下がったとき、各リム吐水口30A、30から便鉢部14の内面をすじ状水が流れ落ちるのを防止でき、便器洗浄に起因する便鉢部14内の見栄えの低下を効果的に防止できる。 Explain the advantages of the above configuration. Consider a situation in which the supply of cleaning water from the cleaning water supply device 104 is finished and the water level in each rim water passage 56A, 56B has dropped to near the lower edge of each rim spout 30A, 30B. In this situation, water such as residual water and make-up water on the inner bottom surfaces of the rim water passages 56A and 56B is self-weighted in a direction away from the rim water spouting ports 30A and 30B by the first gradient 74 and the second gradient 76. Makes it easier to flow. That is, the water on the inner bottom surface of each rim water passage 56A, 56B becomes difficult to approach the rim water outlets 30A, 30B, and hardly flows into the toilet bowl 14 through each rim water outlet 30A, 30B. Thereby, when the water level in each rim water passage 56A, 56B falls like the above-mentioned situation, it is possible to prevent the streak-like water from flowing down from the rim water spouting ports 30A, 30 to the inner surface of the toilet bowl 14, and the toilet bowl. It is possible to effectively prevent the appearance of the toilet bowl 14 from being deteriorated due to washing.
 また、ジェット用給水路58の導入口64は、各リム吐水口30A、30Bより低位置に少なくとも一部が配置される。本実施形態に係る導入口64は、各リム吐水口30A、30Bより低位置に全体が配置される。別の観点からいうと、導入口64は、第1勾配74、第2勾配76をもつ内底面の最高位置より低位置に少なくとも一部が配置される。本実施形態に係る導入口64は、第1勾配74、第2勾配76をもつ内底面の最高位置より低位置に全体が配置される。より詳しくは、導入口64は、第1勾配74をもつ内底面の最低位置より下側に配置され、第2勾配76をもつ内底面の最低位置と同位置に配置される。 Further, at least a part of the inlet 64 of the jet water supply channel 58 is disposed at a position lower than the rim water spouting ports 30A and 30B. The introduction port 64 according to the present embodiment is entirely disposed at a position lower than the rim water spouting ports 30A and 30B. From another viewpoint, the introduction port 64 is at least partially disposed at a position lower than the highest position of the inner bottom surface having the first gradient 74 and the second gradient 76. The introduction port 64 according to the present embodiment is entirely disposed at a position lower than the highest position of the inner bottom surface having the first gradient 74 and the second gradient 76. More specifically, the introduction port 64 is disposed below the lowest position of the inner bottom surface having the first gradient 74 and is disposed at the same position as the lowest position of the inner bottom surface having the second gradient 76.
 よって、各リム通水路56A、56B内の水位が下がる過程において、各リム通水路56A、56Bの内底面上の水を、第1勾配74、第2勾配76により、ジェット用給水路58の導入口64まで自重によって導き易くなる。よって、各リム通水路56A、56Bの内底面上の水をジェット用給水路58を通して排出でき、各リム吐水口30A、30Bを通して便鉢部14内に流れる水の量を減らし易くなる。この結果、各リム通水路56A、56B内の水位が下がる過程において、各リム吐水口30A、30Bから便鉢部14の内面をすじ状水が流れ落ちるのをより効果的に防止でき、便器洗浄に起因する便鉢部14内の見栄えの低下を更に効果的に防止できる。 Therefore, in the process of lowering the water level in each rim water passage 56A, 56B, the water on the inner bottom surface of each rim water passage 56A, 56B is introduced into the jet water supply passage 58 by the first gradient 74 and the second gradient 76. It becomes easy to guide to the mouth 64 by its own weight. Therefore, the water on the inner bottom surface of each rim water passage 56A, 56B can be discharged through the jet water supply passage 58, and the amount of water flowing into the toilet bowl 14 through each rim water spouting port 30A, 30B can be easily reduced. As a result, in the process of lowering the water level in each rim water passage 56A, 56B, it is possible to more effectively prevent the streak-like water from flowing down from the respective rim spouts 30A, 30B to the inner surface of the toilet bowl 14, and for toilet cleaning. The resulting deterioration in the appearance of the toilet bowl 14 can be more effectively prevented.
 次に、以上の水洗大便器10を用いた便鉢部14の洗浄方法を図8を用いて説明する。
 水洗大便器10は、便鉢部14内の汚物を水の落差を用いてトラップ部18内に押し流す、いわゆる洗い落し式の洗浄方式により便鉢部14内を洗浄する。洗浄水の供給を開始するためのスイッチ、レバー等の操作部材の操作により、水洗大便器10の吐水部26内には洗浄水供給装置104から所定の流量範囲内の洗浄水が供給される。以下、所定の流量範囲内の洗浄水の供給を開始してから終了するまでの動作を一回の洗浄動作として説明する。なお、洗浄水供給装置104は、本実施形態において、水道水の給水圧を用いた水道直圧式の給水方式により洗浄水を供給する。
Next, the washing | cleaning method of the toilet bowl part 14 using the above flush toilet 10 is demonstrated using FIG.
The flush toilet 10 wash | cleans the inside of the toilet bowl part 14 with the so-called washing-off type washing | cleaning system which pours the waste in the toilet bowl part 14 in the trap part 18 using the drop of water. By operating the operation members such as a switch and a lever for starting the supply of the cleaning water, the cleaning water within the predetermined flow rate range is supplied from the cleaning water supply device 104 into the water discharge section 26 of the flush toilet 10. Hereinafter, 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. In the present embodiment, the cleaning water supply device 104 supplies cleaning water by a water supply direct pressure type water supply method using a tap water supply pressure.
 洗浄水供給装置104から供給される洗浄水は吐水部26内に流入口54から流入する。吐水部26内に流入した洗浄水は、右リム通水路56A、左リム通水路56B、ジェット用給水路58(不図示)のそれぞれの内部を流れつつ、ジェット吐出口28、各リム吐水口30A、30Bのそれぞれから吐き出される。 The cleaning water supplied from the cleaning water supply device 104 flows into the water discharger 26 from the inlet 54. The washing water that has flowed into the water discharge section 26 flows through the right rim water passage 56A, the left rim water passage 56B, and the jet water supply passage 58 (not shown), while the jet discharge port 28 and each rim water discharge port 30A. , 30B.
 ジェット吐出口28から吐き出される洗浄水は、便鉢部14の凹部22内を周方向の一方側(反時計回り方向)に沿って旋回する旋回流Dwaを形成する。この旋回流Dwaにより凹部22の内面が洗浄されるとともに、凹部22内の汚物が旋回中心に集められる。 The washing water discharged from the jet discharge port 28 forms a swirl flow Dwa that swirls along the one side (counterclockwise direction) in the circumferential direction in the recess 22 of the toilet bowl 14. The swirl flow Dwa cleans the inner surface of the recess 22 and collects filth in the recess 22 at the swivel center.
 各リム吐水口30A、30Bはリム部24の内周面に沿って周方向の一方側に洗浄水を吐き出すことにより、便鉢部14内を周方向の一方側に沿って旋回する旋回流Dwbを形成する。この旋回流Dwbにより便鉢部14のリム部24や受け面部20が洗浄される。受け面部20上の旋回流Dwbを形成する洗浄水の一部は、下方に向かいながら旋回し、受け面部20上から凹部22内を通ってトラップ部18の入口16に向かう流れDwcを形成する。便鉢部14の凹部22内の汚物は、この流れDwcによって、トラップ部18内に入口16を通して押し流される。特に、前述の旋回流Dwaにより旋回中心に集められた汚物が押し流されるため、汚物を効果的に排出できる。 Each rim spout 30A, 30B swirls in the toilet bowl portion 14 along one side in the circumferential direction by discharging wash water to one side in the circumferential direction along the inner circumferential surface of the rim portion 24. Form. The rim portion 24 and the receiving surface portion 20 of the toilet bowl portion 14 are washed by the swirl flow Dwb. A part of the washing water forming the swirl flow Dwb on the receiving surface portion 20 swirls while moving downward, and forms a flow Dwc from the receiving surface portion 20 through the recess 22 toward the inlet 16 of the trap portion 18. The filth in the concave portion 22 of the toilet bowl portion 14 is swept away through the inlet 16 into the trap portion 18 by this flow Dwc. In particular, since the filth collected at the swirling center is swept away by the swirling flow Dwa, the filth can be effectively discharged.
 ここで、ジェット用給水路58内での洗浄水の流れ方を考える。ジェット用給水路58内に流入する洗浄水は、図5(b)に示すように、ジェット用給水路58内の空気をジェット吐出口28側に押し出しつつ流れ、ジェット吐出口28に達した時点でジェット吐出口28から吐き出され始める。よって、図9に示すように、ジェット吐出口28から洗浄水が吐き出される前にジェット吐出口28の全体が水没してしまうと、洗浄水により押し出される空気がジェット用給水路58内に空気が残存した状態のままになってしまう。この場合、ジェット用給水路58内の空気がジェット吐出口28から気泡になった状態で排気され(方向Pf参照)、便鉢部14内で気泡の破裂音が生じてしまう。このような事態は、ジェット吐出口28から洗浄水が吐き出される前に、リム吐水口30A、30Bから吐き出される洗浄水によって、溜水44が初期水位WL1から上昇した場合に起こりえる。 Here, let us consider how the washing water flows in the jet water supply channel 58. The cleaning water flowing into the jet water supply path 58 flows while pushing the air in the jet water supply path 58 toward the jet discharge port 28 and reaches the jet discharge port 28 as shown in FIG. 5B. Then, it begins to be discharged from the jet discharge port 28. Therefore, as shown in FIG. 9, if the entire jet discharge port 28 is submerged before the cleaning water is discharged from the jet discharge port 28, the air pushed out by the cleaning water is moved into the jet water supply path 58. The remaining state will remain. In this case, the air in the jet water supply path 58 is exhausted in the form of bubbles from the jet discharge port 28 (see direction Pf), and a bursting sound of bubbles is generated in the toilet bowl portion 14. Such a situation may occur when the stored water 44 rises from the initial water level WL1 by the cleaning water discharged from the rim water discharge ports 30A and 30B before the cleaning water is discharged from the jet discharge port 28.
 そこで、本実施形態に係る便鉢部14及び吐水部26は、ジェット吐出口28から洗浄水が吐き出されてから、リム吐水口30A、30Bから吐き出される洗浄水が溜水44に着水するように構成される。別の観点からいうと、便鉢部14及び吐水部26は、ジェット用給水路58内に導入口64から流入する洗浄水によって、ジェット用給水路58内の空気をジェット吐出口28を通して押し出し終えてから、リム吐水口30A、30Bから吐き出される洗浄水が溜水44に着水するように構成される。これにより、ジェット用給水路58内の空気を洗浄水により押し出し終える前に、リム吐水口30A、30Bから吐き出される洗浄水が溜水44に着水し、溜水44の水位の上昇によりジェット吐出口28の全体が水没してしまう事態を防止できる。この結果、ジェット用給水路58内に空気が残存した状態でジェット吐出口28の全体が水没してしまうことで、ジェット吐出口28から気泡が排気されてしまう事態を防止でき、気泡の破裂音の発生を効果的に防止できる。 Therefore, the toilet bowl 14 and the water discharger 26 according to the present embodiment is configured so that the wash water discharged from the rim water discharge ports 30 </ b> A and 30 </ b> B reaches the accumulated water 44 after the wash water is discharged from the jet discharge port 28. Configured. From another point of view, the toilet bowl 14 and the water discharger 26 finish pushing out the air in the jet water supply channel 58 through the jet discharge port 28 by the wash water flowing into the jet water supply channel 58 from the introduction port 64. After that, the cleaning water discharged from the rim water discharge ports 30 </ b> A and 30 </ b> B is configured to land on the accumulated water 44. As a result, before the air in the jet water supply path 58 is completely pushed out by the cleaning water, the cleaning water discharged from the rim water spouting ports 30A and 30B reaches the accumulated water 44, and the jet water discharge is caused by the rise in the level of the accumulated water 44. A situation in which the entire outlet 28 is submerged can be prevented. As a result, it is possible to prevent a situation where bubbles are exhausted from the jet discharge port 28 due to the entire jet discharge port 28 being submerged in a state where air remains in the jet water supply channel 58, and the burst sound of the bubble is generated. Can be effectively prevented.
 このように構成するため、吐水部26は、流入口54から各リム吐水口30A、30Bまでの通水経路の長さ、ジェット用給水路58の通水経路の長さ、各通水路56A、56B、58の通路断面積等が調整される。また、このように構成するため、便鉢部14は、平面視での曲率半径、各部位の傾斜等が調整される。ジェット吐出口28から早期に洗浄水を吐き出すうえでは、ジェット吐出口28に早期に洗浄水が到達するようにするため、ジェット用給水路58の通水経路の長さを短く、ジェット用給水路58の通路断面積を小さくする等して調整する。各リム吐水口30A、30Bから吐き出される洗浄水(以下、リム洗浄水という)が溜水44に着水するタイミングを遅くするうえでは、流入口54から各リム吐水口30A、30Bまでの通水経路の長さを長くする、便鉢部14の平面視での曲率半径を大きくする、一部の傾斜を緩やかにする等して調整する。 In this way, the water discharge section 26 includes the length of the water flow path from the inflow port 54 to each rim water discharge port 30A, 30B, the length of the water flow path of the jet water supply path 58, each water flow path 56A, The passage cross-sectional areas of 56B and 58 are adjusted. Moreover, since it comprises in this way, as for the toilet bowl part 14, the curvature radius by planar view, the inclination of each site | part, etc. are adjusted. In order to discharge the cleaning water from the jet discharge port 28 at an early stage, the length of the water supply path of the jet water supply path 58 is shortened so that the cleaning water can reach the jet discharge port 28 at an early stage. 58 is adjusted by reducing the cross-sectional area of the passage. In order to delay the timing at which the wash water discharged from the rim spouts 30A and 30B (hereinafter referred to as rim wash water) reaches the accumulated water 44, water flows from the inlet 54 to the rim spouts 30A and 30B. Adjustments are made by increasing the length of the path, increasing the radius of curvature of the toilet bowl 14 in plan view, or making some of the slope gentle.
 以上の構成を別の観点からいうと、便鉢部14及び吐水部26は、ジェット用給水路58内の空気がジェット吐出口28から排気され終えてから、ジェット吐出口28全体が水没するように構成されるともいえる。これによっても、ジェット用給水路58内の空気を洗浄水により押し出し終える前に、溜水44の水位の上昇によりジェット吐出口28の全体が水没してしまう事態を防止できる。 From another point of view, the toilet bowl 14 and the water discharger 26 are configured so that the entire jet discharge port 28 is submerged after the air in the jet water supply path 58 has been exhausted from the jet discharge port 28. It can be said that it is comprised. This also prevents the entire jet discharge port 28 from being submerged due to a rise in the water level of the stored water 44 before the air in the jet water supply path 58 has been pushed out by the wash water.
 このように構成するうえでは、ジェット用給水路58内の空気がジェット吐出口28から排気され終える前に、ジェット吐出口28全体が水没するまで溜水44の水位を上昇させなくする条件を満たす必要がある。このような溜水44の水位の上昇は、リム洗浄水が溜水44に着水することによって起こる。よって、前述の条件を満たすうえでは、前述と同様、(A)ジェット吐出口28から早期に洗浄水を吐き出すようにしつつ、(B)リム洗浄水が溜水44に着水するタイミングを遅くするように、吐水部26、便鉢部14を構成すればよい。(A)を条件としたのは、ジェット吐出口28から早期に洗浄水を吐き出すようにすれば、それだけジェット用給水路58内の空気を排気し終えるタイミングを早められるからである。 In this configuration, before the air in the jet water supply path 58 is exhausted from the jet discharge port 28, the condition that the water level of the accumulated water 44 is not raised until the entire jet discharge port 28 is submerged is satisfied. There is a need. Such a rise in the water level of the accumulated water 44 occurs when the rim cleaning water reaches the accumulated water 44. Therefore, in order to satisfy the above-described conditions, (B) the timing at which the rim cleaning water reaches the pooled water 44 is delayed while the cleaning water is discharged from the jet discharge port 28 at an early stage, as described above. Thus, the water discharge part 26 and the toilet bowl part 14 should just be comprised. The reason for the condition (A) is that if the washing water is discharged from the jet outlet 28 at an early stage, the timing of exhausting the air in the jet water supply path 58 can be advanced accordingly.
 なお、図10に示すように、便器洗浄時において、ジェット吐出口28、リム吐水口30A、30Bから吐き出される洗浄水により、便鉢部14の凹部22内の溜水44は初期水位WL1から水位WL2(図2、図4も参照)まで上昇する。この水位WL2にあるとき、ジェット吐出口28の全体は水没する。このような水位WL2になるように、洗浄水供給装置104から供給される洗浄水の供給量が調整される。 In addition, as shown in FIG. 10, at the time of toilet bowl washing | cleaning, the water 44 in the recessed part 22 of the toilet bowl part 14 is the water level from the initial water level WL1 by the wash water discharged from the jet discharge port 28 and the rim water discharge ports 30A and 30B. It rises to WL2 (see also FIGS. 2 and 4). When the water level is WL2, the entire jet discharge port 28 is submerged. The supply amount of the cleaning water supplied from the cleaning water supply device 104 is adjusted so as to achieve such a water level WL2.
 以上、実施の形態に基づき第1発明を説明したが、実施の形態は、第1発明の原理、応用を示すにすぎない。また、実施の形態には、請求の範囲に規定された第1発明の思想を逸脱しない範囲において、多くの変形例や配置の変更が可能である。 The first invention has been described above based on the embodiment, but the embodiment only shows the principle and application of the first invention. In the embodiment, many variations and arrangements can be made without departing from the concept of the first invention defined in the claims.
 水洗大便器10は、洗浄方式として洗い落し式を用いる例を説明したが、サイホン式等の他方式と組み合わせた洗浄方式により便鉢部14内を洗浄してもよい。水洗大便器10は、給水方式として水道直圧式を用いる例を説明したが、この他にも重力を用いた重力給水式等の給水方式が用いられてもよい。便器本体12は壁掛け式便器を例に説明したが、トイレ室の床面上に設置される床置き式便器でもよい。また、便器本体12は陶器の他に樹脂等を素材としてもよい。 Although the flush toilet 10 has been described as 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 method. Although the flush toilet 10 explained the example which uses a water supply direct pressure system as a water supply system, water supply systems, such as a gravity water supply system using gravity, may be used besides this. Although 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.
 トラップ部18の入口16は便鉢部14の底部(凹部22)の底面部に開口する例を説明したが、底部の側面部に開口してもよい。 Although the example in which the inlet 16 of the trap part 18 opens in the bottom part of the bottom part (concave part 22) of the toilet bowl part 14 was demonstrated, you may open in the side part of a bottom part.
 ジェット吐出口28は凹部22の左側かつ前側の壁面に形成される例を説明したが、その位置はこれに限られない。また、吐水部26は、ジェット吐出口28から洗浄水を吐き出すことにより、便鉢部14の底部内に周方向の一方側に沿って旋回する旋回流を形成するように構成される例を説明した。このジェット吐出口28から吐き出される洗浄水により形成される水流は、これに限られず、たとえば、トラップ部18の入口16を通してトラップ部18の奥側に向かう水流が形成されてもよい。いずれにしても、トラップ部18を通して汚物の排出を促進する水流が形成されればよい。 Although an example in which the jet discharge port 28 is formed on the wall surface on the left side and the front side of the recess 22 has been described, the position thereof is not limited thereto. Moreover, the water discharge part 26 demonstrates the example comprised so that the swirling flow swirling along the one side of the circumferential direction may be formed in the bottom part of the toilet bowl part 14 by discharging wash water from the jet discharge port 28. did. The water flow formed by the washing water discharged from the jet discharge port 28 is not limited to this, and for example, a water flow passing through the inlet 16 of the trap portion 18 toward the deep side of the trap portion 18 may be formed. In any case, a water flow that promotes the discharge of filth through the trap portion 18 may be formed.
 また、この他に、ジェット吐出口28は、ジェット吐出口28の上下寸法をLaとしたとき、上下寸法Laに対して1/4以上3/4以下の範囲が、溜水44の初期水位WL1に対して下側に配置されるように形成されてもよい。 In addition to this, the jet discharge port 28 has an initial water level WL1 of the accumulated water 44 in a range from 1/4 to 3/4 with respect to the vertical dimension La when the vertical dimension of the jet discharge port 28 is La. It may be formed so as to be arranged on the lower side with respect to.
 リム吐水口30A、30Bは、便鉢部14内に洗浄水を吐き出すための吐水口の一例として説明した。この吐水口はリム部24に形成されていなくともよく、便器本体12上に搭載される温水洗浄装置に形成されてもよい。また、リム部24には二つのリム吐水口30A、30Bが形成される例を説明したが、リム部24には一つのリム吐水口のみが形成されてもよいし、三つ以上のリム吐水口が形成されてもよい。また、リム吐水口30A、30Bはリム部24の内周面に沿って周方向の一方側に向けて洗浄水を吐き出す例を説明した。リム部24に形成される吐水口は、便鉢部14内に洗浄水を吐き出すためのものであればよく、洗浄水の吐き出し方向はこれに限られない。たとえば、下向きに洗浄水を吐き出してもよい。 The rim spouts 30 </ b> A and 30 </ b> B have been described as an example of spouts for discharging wash water into the toilet bowl 14. This spout may not be formed in the rim part 24, and may be formed in the warm water washing apparatus mounted on the toilet body 12. Further, the example in which the two rim spouts 30A and 30B are formed in the rim portion 24 has been described, but only one rim spout may be formed in the rim portion 24, or three or more rim spouts may be formed. A water mouth may be formed. Further, the rim water discharge ports 30 </ b> A and 30 </ b> B have been described with respect to the example in which the cleaning water is discharged toward one side in the circumferential direction along the inner peripheral surface of the rim portion 24. The spout formed in the rim part 24 should just be for discharging wash water in the toilet bowl part 14, and the discharge direction of wash water is not restricted to this. For example, the washing water may be discharged downward.
 また、リム部24の裏側には左リム通水路56B及び右リム通水路56Aが形成される例を説明したが、いずれか片方のみが形成されてもよい。 Further, although an example has been described in which the left rim water passage 56B and the right rim water passage 56A are formed on the back side of the rim portion 24, only one of them may be formed.
 また、ジェット用給水路58の導入口64は左リム通水路56Bの内底面に形成される例を説明した。導入口64は、吐水口に洗浄水を供給するための通水路の内壁面に形成される場合、左リム通水路56Bの内側面に形成されてもよいし、右リム通水路56Aの内底面又は内側面に形成されてもよい。 Also, an example in which the inlet 64 of the jet water supply channel 58 is formed on the inner bottom surface of the left rim water channel 56B has been described. When the inlet 64 is formed on the inner wall surface of the water passage for supplying cleaning water to the water outlet, it may be formed on the inner surface of the left rim water passage 56B, or the inner bottom surface of the right rim water passage 56A. Or you may form in an inner surface.
 以上の実施形態、変形例により具体化される発明を一般化すると、以下の技術的思想が導かれる。 Generalizing the invention embodied by the above embodiments and modifications leads to the following technical idea.
 第1発明の第2態様の水洗大便器は、第1態様において、前記便鉢部及び前記吐水部は、前記ジェット用給水路内の空気が前記ジェット吐出口から排気され終えてから、前記ジェット吐出口全体が水没するように構成されてもよい。
 この態様によれば、ジェット用給水路内の空気を洗浄水により押し出し終える前に、溜水の水位の上昇によりジェット吐出口全体が水没してしまう事態を防止できる。この結果、ジェット用給水路内に空気が残存した状態でジェット吐出口の全体が水没してしまうことで、ジェット吐出口から気泡が排気されてしまう事態を防止でき、気泡の破裂音の発生を効果的に防止できる。
A flush toilet according to a second aspect of the first invention is the flush toilet according to the first aspect, wherein the stool part and the water discharge part are configured so that the air in the water supply passage for the jet is exhausted from the jet outlet and the jet You may comprise so that the whole discharge outlet may be submerged.
According to this aspect, it is possible to prevent a situation in which the entire jet discharge port is submerged due to a rise in the water level of the stored water before the air in the jet water supply channel has been pushed out by the washing water. As a result, the entire jet discharge port is submerged while air remains in the jet water supply channel, so that it is possible to prevent the bubbles from being exhausted from the jet discharge port, and the generation of bubble burst noise. It can be effectively prevented.
 第1発明の第3態様の水洗大便器は、第1態様において、前記吐水部は、前記便鉢部内に洗浄水を吐き出すための吐水口を有し、前記便鉢部及び前記吐水部は、前記ジェット吐出口から洗浄水が吐き出されてから、前記リム吐水口から吐き出される洗浄水が前記溜水に着水するように構成されてもよい。
 この態様によれば、ジェット用給水路内の空気を洗浄水により押し出し終える前に、リム吐水口から吐き出される洗浄水が溜水に着水し、溜水の水位の上昇によりジェット吐出口の全体が水没してしまう事態を防止できる。この結果、ジェット用給水路内に空気が残存した状態でジェット吐出口の全体が水没してしまうことで、ジェット吐出口から気泡が排気されてしまう事態を防止でき、気泡の破裂音の発生を効果的に防止できる。
In the flush toilet of the third aspect of the first invention, in the first aspect, the water discharge part has a spout for discharging wash water into the toilet bowl part, and the toilet bowl part and the water discharge part are: After the cleaning water is discharged from the jet discharge port, the cleaning water discharged from the rim water discharge port may land on the stored water.
According to this aspect, before the air in the jet water supply channel is completely pushed out by the cleaning water, the cleaning water discharged from the rim water spouting water reaches the pool water, and the entire jet discharge port is increased by increasing the water level of the pool water. Can be prevented from being submerged. As a result, the entire jet discharge port is submerged while air remains in the jet water supply channel, so that it is possible to prevent the bubbles from being exhausted from the jet discharge port, and the generation of bubble burst noise. It can be effectively prevented.
 第1発明の第4態様の水洗大便器は、第1態様から第3態様のいずれかにおいて、前記ジェット用給水路は、洗浄水を導入するための導入口から前記ジェット吐出口にかけての範囲において、非洗浄時に連続する大気空間が存在するように形成されてもよい。
 仮に、ジェット用給水路内に通水方向の空気の流れを遮断する封水が形成される場合、ジェット用給水路の導入口から洗浄水が流入すると、導入口と封水との間の空気が封水とともに押し出され、溜水に封水が合流することで、溜水が非洗浄時の水位から上昇してしまう。これにより、ジェット用給水路内の空気がジェット吐出口から気泡になった状態で排気され、気泡の破裂音が生じる可能性がある。
 この態様によれば、ジェット用給水路内に封水が形成されないため、ジェット用給水路内の封水が溜水と合流することによる溜水の水位の上昇を防止できる。よって、ジェット用給水路内に空気が残存した状態でジェット吐出口の全体が水没してしまうことで、ジェット吐出口から気泡が排気されてしまう事態を防止でき、気泡の破裂音の発生を効果的に防止できる。
The flush toilet of the fourth aspect of the first invention is any one of the first to third aspects, wherein the jet water supply channel is in a range from the inlet for introducing the wash water to the jet outlet. Further, it may be formed such that there is a continuous atmospheric space at the time of non-cleaning.
If sealed water that blocks the flow of air in the direction of water flow is formed in the jet water supply channel, if cleaning water flows from the inlet of the jet water supply channel, the air between the inlet and the sealed water Is pushed out together with the sealed water, and the sealed water joins the stored water, so that the stored water rises from the water level at the time of non-washing. Thereby, the air in the jet water supply channel is exhausted in the state of bubbles from the jet discharge port, and there is a possibility that a bursting sound of the bubbles is generated.
According to this aspect, since the sealed water is not formed in the jet water supply channel, it is possible to prevent an increase in the level of the stored water due to the sealed water in the jet water channel joining the stored water. Therefore, the entire jet outlet can be submerged while air remains in the jet water supply channel, preventing bubbles from being exhausted from the jet outlet, and the effect of generating a bursting sound of the bubbles is effective. Can be prevented.
 第1発明の第5態様の水洗大便器は、第1態様から第4態様のいずれかにおいて、前記便鉢部は、該便鉢部の上端部を形成するリム部を有し、前記吐水部は、前記リム部に形成されるリム吐水口と、前記リム部の裏側に形成され、前記リム吐水口に洗浄水を供給するためのリム通水路と、を有し、前記リム通水路の内底面には、前記リム吐水口から奥側に向かうにつれて下り傾斜となる勾配が設けられてもよい。
 リム吐水口の下縁近くまで通水路内の水位が下がった状況を考える。この態様によれば、この状況のとき、リム通水路の内底面上の水は、その内底面の勾配により、リム吐水口から離れる方向に自重により流れ易くなる。つまり、リム通水路の内底面上の水がリム吐水口まで近づき難くなり、リム吐水口を通して便鉢部内にまで流れ難くなる。よって、前述の状況のようにリム通水路内の水位が下がったとき、リム吐水口から便鉢部の内面をすじ状水が流れ落ちるのを防止でき、便器洗浄に起因する便鉢部内の見栄えの低下を効果的に防止できる。
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 stool part has a rim part that forms an upper end part of the stool part, and the water discharge part Has a rim water outlet formed in the rim portion, and a rim water passage formed on the back side of the rim portion for supplying cleaning water to the rim water outlet. The bottom surface may be provided with a slope that is inclined downward from the rim water spouting port toward the back side.
Consider the situation where the water level in the waterway has dropped to near the lower edge of the rim spout. According to this aspect, in this situation, the water on the inner bottom surface of the rim water passage easily flows due to its own weight in the direction away from the rim water spouting port due to the gradient of the inner bottom surface. That is, it becomes difficult for water on the inner bottom surface of the rim water passage to approach the rim spout and to flow into the toilet bowl through the rim spout. Therefore, when the water level in the rim water passage is lowered as described above, streaky water can be prevented from flowing down from the rim spout to the inner surface of the toilet bowl, and the appearance in the toilet bowl caused by toilet flushing can be prevented. Reduction can be effectively prevented.
 第1発明の第6態様の水洗大便器は、第5態様において、前記ジェット用給水路内に洗浄水を導入するための導入口は、前記リム通水路の内壁面に形成され、前記リム吐水口より低位置に少なくとも一部が配置されてもよい。
 この態様によれば、リム通水路内の水位が徐々に下がる過程において、リム通水路の内底面上の水を勾配によりジェット用給水路の導入口まで自重によって導き易くなる。よって、リム通水路の内底面上の水をジェット用給水路を通して排出でき、リム吐水口を通して便鉢部内に流れる水の量を減らし易くなる。この結果、リム通水路内の水位が下がる過程において、リム吐水口から便鉢部の内面をすじ状水が流れ落ちるのをより効果的に防止でき、便器洗浄に起因する見栄えの低下を更に効果的に防止できる。
A flush toilet according to a sixth aspect of the first invention is the flush toilet according to the fifth aspect, wherein an inlet for introducing the wash water into the jet water supply passage is formed on an inner wall surface of the rim water passage. At least a part may be disposed at a position lower than the water inlet.
According to this aspect, in the process of gradually lowering the water level in the rim water channel, the water on the inner bottom surface of the rim water channel can be easily guided to the inlet of the jet water channel by its own weight due to the gradient. Therefore, the water on the inner bottom surface of the rim water passage can be discharged through the jet water supply passage, and the amount of water flowing into the toilet bowl through the rim spout can be easily reduced. As a result, in the process of lowering the water level in the rim water passage, it is possible to more effectively prevent the streaky water from flowing from the rim spout to the inner surface of the toilet bowl, and to further effectively reduce the appearance due to toilet cleaning. Can be prevented.
2.第2発明の好ましい実施の形態を説明する。 2. A preferred embodiment of the second invention will be described.
 図11は第2実施形態に係る水洗大便器210の平面図である。
 水洗大便器210は、陶器を素材とする便器本体212を備える。便器本体212は、トイレ室の側壁面200に掛けた状態で取り付けられる壁掛け型便器である。
FIG. 11 is a plan view of a flush toilet 210 according to the second embodiment.
The flush toilet 210 includes a toilet body 212 made of ceramic. The toilet body 212 is a wall-mounted toilet that is attached in a state of being hung on the side wall surface 200 of the toilet room.
 図12は図11のA-A線断面図である。
 便器本体212は、便器本体212の前部に形成される便鉢部214と、便鉢部214の底部に接続される排水通路部216と、を備える。排水通路部216は、便鉢部214内から下水側水路(不図示)に排出される汚物の通り道となる。排水通路部216は、通水方向の空気の流れを遮断するための封水218が貯められるトラップ部220を備える。トラップ部220の下流端部には接続管202が接続され、排水通路部216は接続管202を介して下水側水路に接続される。
12 is a cross-sectional view taken along line AA in FIG.
The toilet bowl 212 includes a toilet bowl 214 formed at the front of the toilet bowl 212 and a drainage passage 216 connected to the bottom of the toilet bowl 214. The drainage passage 216 serves as a passage for waste discharged from the toilet bowl 214 to a sewage water channel (not shown). The drainage passage part 216 includes a trap part 220 in which sealed water 218 for blocking the flow of air in the direction of water flow is stored. A connecting pipe 202 is connected to the downstream end of the trap part 220, and the drainage passage part 216 is connected to the sewage side water channel via the connecting pipe 202.
 図13は図12のB-B線断面図である。
 便鉢部214は、図12、図13に示すように、汚物を受けるための鉢状の受け面部222と、受け面部222の下縁部から下方に窪むとともに便鉢部214の底部に形成される凹部224と、便鉢部214の上端部に形成されるリム部226と、を備える。受け面部222は、平面視にて左右寸法より前後寸法が大きくなるような楕円状に形成される。凹部224の底面部には排水通路部216の入口216aが開口し、凹部224には封水218の一部が溜水228として貯められる。
13 is a cross-sectional view taken along line BB in FIG.
As shown in FIGS. 12 and 13, the toilet bowl 214 is formed at the bottom of the toilet bowl 214 while being recessed downward from the bottom edge of the bowl receiving surface 222 for receiving filth and the receiving surface 222. And a rim portion 226 formed at the upper end of the toilet bowl 214. The receiving surface portion 222 is formed in an elliptical shape whose front and rear dimensions are larger than the left and right dimensions in plan view. An inlet 216 a of the drainage passage 216 is opened at the bottom surface of the recess 224, and a part of the sealed water 218 is stored as the accumulated water 228 in the recess 224.
 便器本体212は、図13に示すように、洗浄水を吐き出すための吐水部230を備える。吐水部230は、リム部226の外周側に形成される二つのリム通水路232L、232Rと、各リム通水路232L、232Rのそれぞれに洗浄水を供給するための共通通水路234(図12も参照)と、リム部226に形成される二つのリム吐水孔236L、236Rと、を有する。また、吐水部230は、便鉢部214の凹部224に形成されるジェット吐出孔238と、ジェット吐出孔238に洗浄水を供給するためのジェット用連通路240と、を有する。水洗大便器210は、リム通水路232Lに主な特徴の一つがあるが、先に吐水部230の他の特徴から説明する。 As shown in FIG. 13, the toilet body 212 includes a water discharge unit 230 for discharging the wash water. The water discharger 230 has two rim water passages 232L and 232R formed on the outer peripheral side of the rim portion 226, and a common water passage 234 for supplying cleaning water to each of the rim water passages 232L and 232R (also FIG. 12). Reference) and two rim water discharge holes 236L and 236R formed in the rim portion 226. The water discharger 230 includes a jet discharge hole 238 formed in the recess 224 of the toilet bowl 214 and a jet communication path 240 for supplying cleaning water to the jet discharge hole 238. Although the flush toilet 210 has one of the main features in the rim water passage 232L, the other features of the water discharger 230 will be described first.
 二つのリム通水路232L、232Rには、便器本体212の左右一方側となる左側の左リム通水路232L(第1リム通水路)と、便器本体212の左右他方側となる右側の右リム通水路232R(第2リム通水路)とが含まれる。左リム通水路232Lは、図1に示すように、便器本体212の左右中心線CLに対して左側に配置される。右リム通水路232Rは、便器本体212の左右中心線CLに対して右側に配置される。この左右中心線CLとは、便器本体212の外面部分の左右寸法を二等分して前後方向に沿って延びる直線をいう。 The two rim water passages 232 </ b> L and 232 </ b> R include a left rim water passage 232 </ b> L (first rim water passage) on the left and right sides of the toilet body 212 and a right rim passage on the right and left sides of the toilet body 212. And a water channel 232R (second rim water channel). The left rim water passage 232L is disposed on the left side with respect to the left-right center line CL of the toilet body 212, as shown in FIG. The right rim water passage 232R is arranged on the right side with respect to the left-right center line CL of the toilet body 212. The left-right center line CL is a straight line extending in the front-rear direction by dividing the left-right dimension of the outer surface portion of the toilet body 212 into two equal parts.
 図13に戻り、各リム通水路232L、232Rは共通通水路234の下流端部から左右に分岐して形成される。各リム通水路232L、232Rの分岐元になる分岐位置242はリム部226の後方に配置される。共通通水路234には、図12に示すように、洗浄水供給装置204の一部となる送水管204aから洗浄水が供給される。 13, the rim water passages 232L and 232R are formed by branching left and right from the downstream end of the common water passage 234. A branch position 242 serving as a branch source of each rim water passage 232L, 232R is arranged behind the rim portion 226. As shown in FIG. 12, the common water passage 234 is supplied with cleaning water from a water supply pipe 204 a that is a part of the cleaning water supply device 204.
 左リム通水路232Lは、分岐位置242側の始端部232aから周方向の一方側(図13中の時計回り方向)に延びるように形成される。左リム通水路232Lの延び方向の末端位置にある終端部232bは行き止まりとなるように形成される。左リム通水路232Lの詳細は後述する。 The left rim water passage 232L is formed to extend from the start end 232a on the branching position 242 side to one side in the circumferential direction (clockwise direction in FIG. 13). The end portion 232b at the end position in the extending direction of the left rim water passage 232L is formed to be a dead end. Details of the left rim water passage 232L will be described later.
 右リム通水路232Rは、始端側となる分岐位置242から周方向の他方側(図13中の反時計回り方向)に延びるように形成される。右リム通水路232Rの延び方向の末端位置となる終端部には右リム吐水孔236Rが形成される。以下、「周方向の一端側」を時計回り方向といい、「周方向の他端側」を反時計回り方向という。 The right rim water passage 232R is formed so as to extend from the branch position 242 on the start end side to the other side in the circumferential direction (counterclockwise direction in FIG. 13). A right rim water discharge hole 236R is formed at a terminal portion that is a terminal position in the extending direction of the right rim water passage 232R. Hereinafter, “one end side in the circumferential direction” is referred to as a clockwise direction, and “the other end side in the circumferential direction” is referred to as a counterclockwise direction.
 二つのリム吐水孔236L、236Rには、便器本体212の左側の左リム吐水孔236L(第1リム吐水孔)と、便器本体212の右側のリム吐水孔236R(第2リム吐水孔)とが含まれる。左リム吐水孔236Lは、図1に示すように、便器本体212の左右中心線CLに対して左側であって、便鉢部214の後部に配置される。右リム吐水孔236Rは、便器本体212の左右中心線CLに対して右側であって、便鉢部214の前後方向での中間位置に配置される。 The two rim water discharge holes 236L and 236R include a left rim water discharge hole 236L (first rim water discharge hole) on the left side of the toilet body 212 and a right rim water discharge hole 236R (second rim water discharge hole) on the toilet body 212. included. As shown in FIG. 1, the left rim water discharge hole 236 </ b> L is disposed on the left side of the left-right center line CL of the toilet body 212 and at the rear of the toilet bowl 214. The right rim water discharge hole 236 </ b> R is disposed on the right side with respect to the left-right center line CL of the toilet main body 212 and at an intermediate position in the front-rear direction of the toilet bowl 214.
 図13に戻る。左リム吐水孔236Lは、左リム通水路232Lから便鉢部214内に吐水するためのものである。右リム吐水孔236Rは、右リム通水路232Rから便鉢部214内に吐水するためのものである。二つのリム吐水孔236L、236Rからは、リム部226の内周面に沿って反時計回り方向に洗浄水が吐き出される。これにより、便鉢部214の内面、特に、リム部226や受け面部222の内面を洗浄するための水流が形成される。この水流は、便鉢部214内を反時計回り方向に旋回するように導かれる旋回流となる。 Return to FIG. The left rim water discharge hole 236L is for discharging water from the left rim water passage 232L into the toilet bowl 214. The right rim water discharge hole 236R is for discharging water into the toilet bowl 214 from the right rim water passage 232R. Wash water is spouted in the counterclockwise direction along the inner peripheral surface of the rim portion 226 from the two rim water discharge holes 236L and 236R. Thereby, a water flow for cleaning the inner surface of the toilet bowl 214, particularly the inner surface of the rim 226 and the receiving surface 222 is formed. This water flow becomes a swirl flow guided so as to swirl counterclockwise in the toilet bowl 214.
 ジェット吐出孔238は、便鉢部214の凹部224の左側かつ前側の壁面に形成される。ジェット吐出孔238からは便鉢部214の凹部224内の溜水228(図12参照)に向けて洗浄水が吐き出される。詳しくは、便鉢部214の凹部224の溜水228に向けて、凹部224の内周面に沿うように反時計回り方向に洗浄水が吐き出される。これにより、便鉢部214の凹部224内に反時計回りの旋回流が形成され、この旋回流により凹部224内の汚物が旋回中心に集められる。この汚物は、受け面部222上から凹部224内に流れ込む洗浄水によって、排水通路部216内に入口216aを通して押し流される。このように、ジェット吐出孔238から吐き出される洗浄水により、汚物の排出を促進するための水流が溜水228に形成される。 The jet discharge hole 238 is formed on the wall surface on the left side and the front side of the recess 224 of the toilet bowl 214. Wash water is spouted from the jet discharge hole 238 toward the accumulated water 228 (see FIG. 12) in the recess 224 of the toilet bowl 214. Specifically, the wash water is spouted in the counterclockwise direction along the inner peripheral surface of the recess 224 toward the water 228 in the recess 224 of the toilet bowl 214. As a result, a counterclockwise swirl flow is formed in the recess 224 of the toilet bowl 214, and the filth in the recess 224 is collected at the swivel center by this swirl flow. The filth is pushed away through the inlet 216a into the drainage passage 216 by the cleaning water flowing into the recess 224 from the receiving surface 222. In this manner, a water flow for promoting the discharge of filth is formed in the accumulated water 228 by the cleaning water discharged from the jet discharge holes 238.
 ジェット用連通路240は、左リム通水路232Lとジェット吐出孔238を連通する。ジェット用連通路240は、左リム通水路232Lからジェット吐出孔238にかけて順に設けられる、第1部分240a、第2部分240b及び第3部分240を有する。第1部分240aは、左リム通水路232Lの内壁面に開口する水導入口240d(後述する)から下方かつ便鉢部214の径方向内側に向かって延びる。第2部分240bは、便鉢部214の外周側にて、第1部分240aの下流端部から時計回り方向かつ下方に向かって曲がりながら延びる。第3部分240cは、第2部分240bの下流端部からジェット吐出孔238に向かって後方に延びる。 The jet communication path 240 communicates with the left rim water passage 232L and the jet discharge hole 238. The jet communication path 240 includes a first portion 240 a, a second portion 240 b, and a third portion 240 that are sequentially provided from the left rim water passage 232 </ b> L to the jet discharge hole 238. The first portion 240a extends downward and radially inward of the toilet bowl 214 from a water inlet 240d (described later) that opens in the inner wall surface of the left rim water passage 232L. The second portion 240b extends on the outer peripheral side of the toilet bowl 214 while bending in the clockwise direction and downward from the downstream end of the first portion 240a. The third portion 240c extends rearward from the downstream end portion of the second portion 240b toward the jet discharge hole 238.
 図14は、図13の左リム通水路232Lの拡大図である。
 左リム通水路232Lは、始端部232aから終端部232bに向けてL字状に曲がりながら延びる形状である。左リム通水路232Lに始端部232aから供給される洗浄水は、左リム通水路232Lの内壁面に当たることで流れ方向を変えつつ終端部232bまで誘導される。このように左リム通水路232Lは、始端側から終端側に向けて洗浄水を誘導可能に形成される。
FIG. 14 is an enlarged view of the left rim water passage 232L of FIG.
The left rim water passage 232L has a shape that extends while bending in an L shape from the start end 232a toward the end end 232b. The wash water supplied from the start end 232a to the left rim water passage 232L is guided to the end portion 232b while changing the flow direction by hitting the inner wall surface of the left rim water passage 232L. As described above, the left rim water passage 232L is formed so that the washing water can be guided from the start side toward the end side.
 左リム吐水孔236Lは、左リム通水路232Lの始端側より終端側に向かう経路Paの途中位置から分岐して形成される。左リム吐水孔236Lは、この途中位置から便鉢部214の内側、かつ、反時計回り方向に延びるように形成される。 The left rim water discharge hole 236L is formed by branching from a middle position of the path Pa from the start end side to the end side of the left rim water passage 232L. The left rim water discharge hole 236L is formed so as to extend from the midway position inside the toilet bowl 214 and in the counterclockwise direction.
 ジェット用連通路240内に洗浄水を導入するための水導入口240dは、左リム吐水孔236Lより左リム通水路232Lの終端側に開口する。詳しくは、水導入口240dは、左リム通水路232Lの終端部232bの内底面に開口する。また、この水導入口240dは、便器本体212の左側にて左リム吐水孔236Lより便器本体212の前方側に配置される。 Water introduction port 240d for introducing cleaning water into jet communication passage 240 opens to the end side of left rim water passage 232L from left rim water discharge hole 236L. Specifically, the water introduction port 240d opens at the inner bottom surface of the end portion 232b of the left rim water passage 232L. The water inlet 240d is disposed on the left side of the toilet body 212 on the front side of the toilet body 212 from the left rim water discharge hole 236L.
 左リム通水路232Lに始端側から供給される洗浄水は、左リム通水路232Lに誘導されることにより、左リム吐水孔236Lより水導入口240d側にある水路部分に先に流れ込む。左リム吐水孔236Lより水導入口240d側の水路部分が洗浄水で満たされはじめると、洗浄水の一部は、左リム通水路232Lの始端側から終端側に向かう途中で流れ方向を変えて左リム吐水孔236Lに流入する(方向Pb参照)。このように左リム吐水孔236Lは、左リム通水路232Lの始端側から供給される洗浄水が流れ方向を変えることで流入可能な位置に形成される。 The cleaning water supplied from the start end side to the left rim water passage 232L is guided to the left rim water passage 232L, and flows first into the water passage portion on the water introduction port 240d side from the left rim water discharge hole 236L. When the water channel portion on the side of the water introduction port 240d from the left rim water discharge hole 236L begins to be filled with the cleaning water, a part of the cleaning water changes its flow direction on the way from the start side to the end side of the left rim water channel 232L. It flows into the left rim water discharge hole 236L (see direction Pb). Thus, the left rim water discharge hole 236L is formed at a position where the wash water supplied from the start end side of the left rim water passage 232L can flow in by changing the flow direction.
 図15は、図14のD-D線断面図であり、図16は、図14のE-E線断面図である。
 左リム通水路232Lには、図14~図16に示すように、左リム吐水孔236Lと水導入口240dの間に絞り部244が形成される。図14では絞り部244の位置を二点鎖線で示す。
15 is a sectional view taken along the line DD of FIG. 14, and FIG. 16 is a sectional view taken along the line EE of FIG.
In the left rim water passage 232L, as shown in FIGS. 14 to 16, a throttle portion 244 is formed between the left rim water discharge hole 236L and the water introduction port 240d. In FIG. 14, the position of the aperture 244 is indicated by a two-dot chain line.
 絞り部244は、左リム通水路232Lの始端側から終端側に向かう洗浄水の流れを絞るために形成される。絞り部244は、左リム通水路232Lの内壁面から突き出る壁部分244aと、洗浄水が通過可能な通水部分244bと、を有する。通水部分244bは、左リム通水路232Lの内壁面と壁部分244aとにより囲まれた開口部として形成される。絞り部244は、左リム通水路232L内の空間が始端側から終端側に向かって狭められた後に広がるように形成される。絞り部244は、左リム通水路232Lの絞り部244より始端側にある水路部分232d(以下、始端側水路部分232dという)から、左リム通水路232Lの絞り部244より終端側にある水路部分232e(以下、終端側水路部分232eという)に流れ込む洗浄水の流量を減少させる機能をもつ。 The throttle portion 244 is formed to throttle the flow of the cleaning water from the start end side to the end side of the left rim water passage 232L. The restricting portion 244 has a wall portion 244a protruding from the inner wall surface of the left rim water passage 232L, and a water passage portion 244b through which the cleaning water can pass. The water passage portion 244b is formed as an opening surrounded by the inner wall surface of the left rim water passage 232L and the wall portion 244a. The throttle portion 244 is formed so that the space in the left rim water passage 232L is expanded after being narrowed from the start end side toward the end end side. The throttling portion 244 starts from a water channel portion 232d on the start end side with respect to the throttling portion 244 of the left rim water passage 232L (hereinafter referred to as a start end side water passage portion 232d), and is located on the terminal side of the throttling portion 244 of the left rim water passage 232L. It has a function of reducing the flow rate of the cleaning water flowing into the H.232e (hereinafter referred to as the end-side water channel portion 232e).
 以上の水洗大便器210の動作を説明する。
 図12、図13に示すように、共通通水路234には、送水管204aから洗浄水が供給される。送水管204aから洗浄水が供給されると、共通通水路234の分岐位置242から各リム通水路232L、232Rに洗浄水が分岐して供給される(図13の方向Wp参照)。右リム通水路232Rを流れる洗浄水は右リム吐水孔236Rから吐き出される。左リム通水路232Lを流れる洗浄水の一部は左リム吐水孔236Lから吐き出され、残部はジェット用連通路240を通してジェット吐出孔238から吐き出される。
The operation of the flush toilet 210 will be described.
As shown in FIGS. 12 and 13, cleaning water is supplied to the common water passage 234 from the water pipe 204a. When the cleaning water is supplied from the water supply pipe 204a, the cleaning water is branched and supplied from the branch position 242 of the common water passage 234 to the rim water passages 232L and 232R (see direction Wp in FIG. 13). Wash water flowing through the right rim water passage 232R is discharged from the right rim water discharge hole 236R. Part of the wash water flowing through the left rim water passage 232L is discharged from the left rim water discharge hole 236L, and the remaining portion is discharged from the jet discharge hole 238 through the jet communication path 240.
 ここで、仮に、左リム通水路232Lの終端部232bに左リム吐水孔236Lが形成され、始端側から終端側に向かう経路の途中位置にジェット用連通路240の水導入口240dが開口する場合を考える。この場合、左リム通水路232L内を始端側から流れる洗浄水は、ジェット用連通路240があっても流れ方向を変えずに終端部232bの左リム吐水孔236Lまで誘導され易くなる。よって、左リム通水路232L内からジェット用連通路240を通して洗浄水を取り込み難くなり、高水圧の洗浄水をジェット吐出孔238から吐き出し難くなる。 Here, if the left rim water discharge hole 236L is formed in the end portion 232b of the left rim water passage 232L, and the water introduction port 240d of the jet communication passage 240 opens at a midpoint in the path from the start end side to the end end side. think of. In this case, the cleaning water flowing from the start end side in the left rim water passage 232L is easily guided to the left rim water discharge hole 236L of the end portion 232b without changing the flow direction even if the jet communication passage 240 is provided. Therefore, it becomes difficult to take in the washing water from the left rim water passage 232L through the jet communication passage 240, and it becomes difficult to discharge the high-pressure washing water from the jet discharge hole 238.
(A)一方、本実施形態の水洗大便器210によれば、左リム通水路232Lの終端部232bまで流れ込んだ洗浄水は、そこから流れ方向を変えるしかなく、その近傍にある水導入口240dに流れ方向を変えて導入され易くなる。よって、左リム通水路232Lからジェット用連通路240に洗浄水を取り込み易くなり、高水圧の洗浄水をジェット吐出孔238から吐き出し易くなる。この結果、左右のリム通水路232L、232Rに洗浄水を供給して複数のリム吐水孔236L、236Rから洗浄水を吐き出しつつ、ジェット吐出孔238から勢いよく洗浄水を吐き出せるようになる。 (A) On the other hand, according to the flush toilet 210 of the present embodiment, the wash water that has flowed to the end portion 232b of the left rim water passage 232L can only change the flow direction from there, and the water inlet 240d in the vicinity thereof. It is easy to be introduced by changing the flow direction. Therefore, it becomes easy to take in the washing water from the left rim water passage 232L to the jet communication path 240, and it becomes easy to discharge high-pressure washing water from the jet discharge hole 238. As a result, the cleaning water can be discharged from the jet discharge holes 238 while supplying the cleaning water to the left and right rim water passages 232L, 232R and discharging the cleaning water from the plurality of rim water discharge holes 236L, 236R.
(B)また、左リム通水路232Lには左リム吐水孔236Lと水導入口240dの間に絞り部244が形成される。このため、左リム通水路232Lの絞り部244より始端側にある水路部分まで流れ込んだ洗浄水のうちの一部が、絞り部244を通して、左リム通水路232Lの絞り部244より終端側にある水路部分に流れ込む。よって、左リム通水路232Lの絞り部244より始端側にある水路部分の方が、絞り部244より終端側にある水路部分よりも、早期に洗浄水が満たされ易くなる。これにより、絞り部244より始端側にある水路部分の洗浄水による水圧を早期に高めることができ、その水路部分から左リム吐水孔236Lを通して高水圧の洗浄水を早期に吐き出せるようになる。この結果、一回の洗浄動作の中で、高水圧の洗浄水を左リム吐水孔236Lから吐き出す時間を長くでき、それだけ便器洗浄能力や汚物排出能力を高め易くなる。 (B) Further, in the left rim water passage 232L, a narrowed portion 244 is formed between the left rim water discharge hole 236L and the water introduction port 240d. For this reason, a part of the wash water that has flowed to the water channel portion on the start end side from the throttle portion 244 of the left rim water passage 232L passes through the throttle portion 244 and is located on the terminal side from the throttle portion 244 of the left rim water passage 232L. It flows into the channel part. Therefore, the water channel portion that is closer to the start side than the throttle portion 244 of the left rim water passage 232L is more easily filled with the cleaning water earlier than the water channel portion that is closer to the end side than the throttle portion 244. Thereby, the water pressure by the washing water of the water channel part located on the start end side from the throttle part 244 can be increased early, and the high water pressure washing water can be discharged from the water channel part through the left rim water discharge hole 236L at an early stage. As a result, it is possible to lengthen the time for discharging high-pressure washing water from the left rim water discharge hole 236L in one washing operation, and it is easy to increase the toilet cleaning ability and the waste discharging ability.
 もともと、本実施形態の水洗大便器210では、左リム吐水孔236Lより左リム通水路232Lの終端側の水路部分がある分、高水圧の洗浄水を左リム吐水孔236Lから吐き出すタイミングが遅くなり易い。この場合でも、左リム吐水孔236Lと水導入口240dの間に絞り部244を形成することで、高水圧の洗浄水をジェット吐出孔238から吐き出しつつ、高水圧の洗浄水を左リム吐水孔236Lから早期に吐き出せるようになる利点がある。 Originally, in the flush toilet 210 of the present embodiment, the timing of discharging the high-pressure washing water from the left rim water discharge hole 236L is delayed by the amount of the water channel portion on the terminal side of the left rim water passage 232L from the left rim water discharge hole 236L. easy. Even in this case, by forming the throttle portion 244 between the left rim water discharge hole 236L and the water introduction port 240d, the high water pressure wash water is discharged from the jet discharge hole 238 while the high water pressure wash water is discharged to the left rim water discharge hole. There is an advantage that 236L can be discharged early.
 また、この他にも、絞り部244の通水部分244dの寸法調整により、左リム通水路232Lの始端側から、左リム吐水孔236L及びジェット吐出孔238のそれぞれに分配される洗浄水の分配量を調整できるようになる。 In addition to this, the distribution of the cleaning water distributed to the left rim water discharge hole 236L and the jet discharge hole 238 from the start end side of the left rim water passage 232L by adjusting the size of the water flow portion 244d of the throttle portion 244. The amount can be adjusted.
 次に、水洗大便器210の他の特徴を説明する。
 各リム通水路232L、232Rに残留した残留水は、すじ状の水(以下、すじ状水という)となって、各リム吐水孔236L、236Rから便鉢部214の内面を伝って流れ落ちる場合がある。このすじ状水は、便鉢部の内面を伝う経路を不規則に変えながら流れるうえ、長期間に亘って流れ落ちることもあり、見栄えの低下を招く原因となる。以下、これを改善するための工夫点を説明する。
Next, other features of the flush toilet 210 will be described.
Residual water remaining in the rim water passages 232L and 232R becomes streak-like water (hereinafter referred to as streak-like water) and may flow down from the rim water discharge holes 236L and 236R along the inner surface of the toilet bowl 214. is there. This streak-like water flows while irregularly changing the path along the inner surface of the toilet bowl, and may flow down over a long period of time, causing a decrease in appearance. Hereinafter, the point for improving this will be described.
 図17は、各リム通水路232L、232Rの内底面に形成される勾配を模式的に示す図である。本図では高位置から低位置に向かう勾配を矢印により示す。各リム通水路232L、232Rの内底面には、各リム吐水孔236L、236Rから奥側に向かうにつれて下り傾斜となる勾配が設けられる。 FIG. 17 is a diagram schematically showing the gradient formed on the inner bottom surface of each rim water passage 232L, 232R. In this figure, the gradient from the high position to the low position is indicated by an arrow. The inner bottom surface of each rim water passage 232L, 232R is provided with a slope that becomes downwardly inclined from the rim water discharge holes 236L, 236R toward the back side.
 詳しくは、左リム通水路232Lの内底面には、各リム通水路232L、232Rの分岐元となる分岐位置242側が高位置となり、ジェット用連通路240の水導入口240dが低位置となる第1勾配250が設けられる。第1勾配250は、左リム吐水孔236Lから奥側に向かうにつれて下り傾斜となるように設けられる。右リム通水路232Rの内底面には、右リム吐水孔236Rが高位置となり、各リム通水路232L、232Rの分岐位置242側が低位置となる第2勾配252が設けられる。第2勾配252は、右リム吐水孔236Rから奥側に向かうにつれて下り傾斜となるように設けられる。なお、各リム通水路232L、232Rの分岐位置242には下向きに窪む窪み部254が形成される。 Specifically, on the inner bottom surface of the left rim water passage 232L, the branch position 242 side that is the branching source of each rim water passage 232L, 232R is a high position, and the water introduction port 240d of the jet communication path 240 is a low position. One gradient 250 is provided. The first gradient 250 is provided so as to be inclined downward from the left rim water discharge hole 236L toward the back side. On the inner bottom surface of the right rim water passage 232R, a second slope 252 is provided in which the right rim water discharge hole 236R is at a high position and the branch position 242 side of each rim water passage 232L, 232R is at a low position. The second gradient 252 is provided so as to be inclined downward from the right rim water discharge hole 236R toward the back side. In addition, the recessed part 254 recessed downward is formed in the branch position 242 of each rim water passage 232L, 232R.
 以上の勾配252、254により、ジェット用連通路240の水導入口240dは、各リム吐水孔236L、236Rより低位置に少なくとも一部が配置される。本実施形態に係る水導入口240dは、各リム吐水孔236L、236Rより低位置に全体が配置される。 Due to the above gradients 252 and 254, the water introduction port 240d of the jet communication path 240 is at least partially disposed at a position lower than the rim water discharge holes 236L and 236R. The entire water inlet 240d according to the present embodiment is disposed at a position lower than the rim water spouting holes 236L and 236R.
 以上の構成の利点を説明する。洗浄水供給装置204からの洗浄水の供給が終了すると、各リム通水路232L、232R内の水は、各リム吐水孔236L、236Rの他に、左リム通水路232Lの水導入口240dを通してジェット用連通路240から排出される。ここで、各リム吐水孔236L、236Rの下縁近くまで各リム通水路232L、232R内の水位が下がった状況を考える。この状況のとき、各リム通水路232L、232Rの内底面上に残留する残留水は、各リム吐水孔236L、236Rより低位置にある水導入口240dを通してジェット用連通路240から排出でき、各リム吐水孔236L、236Rを通して便鉢部214内に流れる水の量を減らし易くなる。これにより、前述の状況のように各リム通水路232L、232R内の水位が下がったとき、各リム吐水孔236L、236Rから便鉢部214の内面をすじ状水が流れ落ちるのを防止でき、便器洗浄に起因する便鉢部214内の見栄えの低下を効果的に防止できる。 Explain the advantages of the above configuration. When the supply of the cleaning water from the cleaning water supply device 204 is completed, the water in the rim water passages 232L and 232R is jetted through the water inlet 240d of the left rim water passage 232L in addition to the rim water discharge holes 236L and 236R. It is discharged from the communication passage 240. Here, a situation is considered in which the water level in each rim water passage 232L, 232R has dropped to near the lower edge of each rim water discharge hole 236L, 236R. In this situation, the residual water remaining on the inner bottom surfaces of the rim water passages 232L and 232R can be discharged from the jet communication passage 240 through the water inlets 240d located lower than the rim water discharge holes 236L and 236R. It becomes easy to reduce the amount of water flowing into the toilet bowl 214 through the rim water discharge holes 236L and 236R. Thereby, when the water level in each rim water passage 232L, 232R falls like the above-mentioned situation, it is possible to prevent the streak-like water from flowing down the inner surface of the toilet bowl 214 from each rim water discharge hole 236L, 236R. It is possible to effectively prevent the appearance of the toilet bowl 214 from being deteriorated due to the cleaning.
 なお、ここでの「残留水」には、便器洗浄に用いられる洗浄水が残留して形成されるものが含まれる。また、この他にも、便器洗浄により溜水228がトラップ部220から排出された後、再び溜水228を溜めるために供給される補給水が残留して形成されるものも含まれる。 In addition, the “residual water” here includes those formed by remaining washing water used for toilet cleaning. In addition to this, there is also included a case in which makeup water supplied to re-store the stored water 228 remains after the stored water 228 is discharged from the trap unit 220 by toilet cleaning.
 また、各リム通水路232L、232R内の水位が下がる過程において、各リム通水路232L、232Rの内底面上の水を、第1勾配250、第2勾配252により、ジェット用連通路240の水導入口240dまで自重によって導き易くなる。よって、各リム通水路232L、232Rの内底面上の水をジェット用連通路240を通して排出でき、各リム吐水孔236L、236Rを通して便鉢部214内に流れる水の量を減らし易くなる。この結果、各リム通水路232L、232R内の水位が下がる過程において、各リム吐水孔236L、236Rから便鉢部214の内面をすじ状水が流れ落ちるのをより効果的に防止でき、便器洗浄に起因する便鉢部214内の見栄えの低下を更に効果的に防止できる。 Further, in the process of lowering the water levels in the rim water passages 232L and 232R, the water on the inner bottom surface of the rim water passages 232L and 232R is supplied to the water in the jet communication passage 240 by the first gradient 250 and the second gradient 252. It becomes easy to guide to the introduction port 240d by its own weight. Therefore, the water on the inner bottom surfaces of the rim water passages 232L and 232R can be discharged through the jet communication passage 240, and the amount of water flowing into the toilet bowl 214 through the rim water discharge holes 236L and 236R can be easily reduced. As a result, in the process of lowering the water level in each rim water passage 232L, 232R, it is possible to more effectively prevent the streak-like water from flowing down the inner surface of the toilet bowl 214 from each rim water discharge hole 236L, 236R. The resulting deterioration in the appearance of the toilet bowl 214 can be more effectively prevented.
 ここで、図15に示すように、絞り部244に対して左リム吐水孔236L側(始端側)にある水路部分236dを始端側水路部分236dといい、絞り部244に対して水導入口240d側(終端側)にある水路部分236eを終端側水路部分236eという。このとき、絞り部244の通水部分244bの底面244cは、始端側水路部分236dの内底面と、終端側水路部分236eの内底面とを、左リム吐水孔236L側から水導入口240d側に向かって下り傾斜の面で滑らかに連ねるように接続する。この底面244cは、図16に示すように、絞り部244の形成位置において、左リム通水路232Lの水路幅方向の全幅に亘る範囲で形成される。このような絞り部244は、左リム通水路232Lの内底面上を伝わる残留水を、左リム吐水孔236L側から水導入口240d側に向けて方向Pcに導水可能な形状をもつことになる。 Here, as shown in FIG. 15, the water channel portion 236d on the left rim water discharge hole 236L side (start end side) with respect to the throttle portion 244 is referred to as a start end side water channel portion 236d, and the water inlet port 240d is connected to the throttle portion 244. The water channel portion 236e on the side (terminal side) is referred to as a terminal side water channel portion 236e. At this time, the bottom surface 244c of the water flow portion 244b of the throttle portion 244 is such that the inner bottom surface of the start end side water channel portion 236d and the inner bottom surface of the end side water channel portion 236e move from the left rim water discharge hole 236L side to the water introduction port 240d side. Connect them so that they line up smoothly on a downwardly inclined surface. As shown in FIG. 16, the bottom surface 244c is formed in a range extending over the entire width of the left rim water passage 232L in the water passage width direction at the position where the throttle portion 244 is formed. Such a throttle portion 244 has a shape capable of guiding the residual water transmitted on the inner bottom surface of the left rim water passage 232L in the direction Pc from the left rim water discharge hole 236L side to the water introduction port 240d side. .
 これにより、絞り部244に対して左リム吐水孔236L側から水導入口240d側に残留水が淀みなく流れ易くなる。よって、左リム通水路232Lに絞り部244が形成される場合でも、各リム通水路232L、232R内からジェット用連通路240を通して洗浄水を排出し易くなる。この結果、各リム吐水孔236L、236Rから便鉢部214の内面をすじ状水が流れ落ちるのを効果的に防止できる。 This makes it easy for residual water to flow from the left rim water discharge hole 236L side to the water introduction port 240d side without stagnation with respect to the throttle portion 244. Therefore, even when the throttle portion 244 is formed in the left rim water passage 232L, the cleaning water can be easily discharged from the rim water passages 232L and 232R through the jet communication passage 240. As a result, the streak-like water can be effectively prevented from flowing down from the rim water discharge holes 236L, 236R to the inner surface of the toilet bowl 214.
 なお、このような観点から、絞り部244の底面244cは、始端側水路部分232dの内底面と、終端側水路部分232eの内底面とを、始端側から終端側に向かって水平に連ねるように接続するか、始端側より終端側が低位置となるように接続していればよい。いずれの場合でも、左リム通水路232Lの内底面上を伝わる残留水を、左リム吐水孔236L側から水導入口240d側に向けて導水可能な形状をもつことになる。 From this point of view, the bottom surface 244c of the throttle portion 244 connects the inner bottom surface of the start end side water channel portion 232d and the inner bottom surface of the end side water channel portion 232e horizontally from the start end side toward the end side. It suffices to connect them so that the end side is lower than the start side. In any case, the residual water transmitted on the inner bottom surface of the left rim water passage 232L has a shape capable of conducting water from the left rim water discharge hole 236L side toward the water introduction port 240d.
 また、このような作用効果を発揮する観点から、絞り部244の底面244cは、絞り部244の形成位置において、左リム通水路232Lの水路幅方向の一部に亘る範囲で形成されていればよい。 Further, from the viewpoint of exhibiting such operational effects, the bottom surface 244c of the throttle portion 244 may be formed in a range over a part of the left rim water passage 232L in the water channel width direction at the position where the throttle portion 244 is formed. Good.
 ちなみに、前述のように、左リム通水路232Lの内底面には、ジェット用連通路240の水導入口240dに近づくにつれて下り傾斜となる第1勾配250(図17参照)が設けられる。よって、左リム通水路232Lの終端側水路部分236e内の洗浄水に給水圧に応じた水圧が付与されたとき、その終端側水路部分236e内の洗浄水が第1勾配250に沿って水導入口240dに向けてスムーズに誘導され易くなる。この結果、左リム通水路232Lからジェット用連通路240に洗浄水を更に取り込み易くなり、高水圧の洗浄水をジェット吐出孔238から更に吐き出し易くなる。 Incidentally, as described above, the first bottom surface 250 (see FIG. 17) is provided on the inner bottom surface of the left rim water passage 232L so as to be inclined downward toward the water introduction port 240d of the jet communication passage 240. Therefore, when the water pressure corresponding to the supply water pressure is applied to the cleaning water in the terminal side water channel portion 236e of the left rim water passage 232L, the cleaning water in the terminal side water channel portion 236e is introduced along the first gradient 250. It becomes easy to guide smoothly toward the mouth 240d. As a result, the cleaning water can be more easily taken into the jet communication path 240 from the left rim water passage 232L, and the high water pressure cleaning water can be more easily discharged from the jet discharge hole 238.
 次に、水洗大便器210の他の特徴を説明する。
 図18(a)は、第1変形例に係る左リム通水路232Lを示す図である。本図では図15と同様の視点から左リム通水路232Lを示す。本例の絞り部244は、図15の例と比べて、始端側水路部分232dと、終端側水路部分232eとの間で、これらの下側領域を通る流体の流れを遮るように壁部分244aが形成される点で異なる。なお、この水洗大便器210でも前述の(A)、(B)の作用効果を得られる。
Next, other features of the flush toilet 210 will be described.
FIG. 18A is a diagram showing a left rim water passage 232L according to the first modification. In this figure, the left rim water passage 232L is shown from the same viewpoint as FIG. Compared with the example of FIG. 15, the restricting portion 244 of the present example includes a wall portion 244a between the start-side water channel portion 232d and the terminal-side water channel portion 232e so as to block the flow of fluid through these lower regions. Is different in that it is formed. In this flush toilet 210, the above-described effects (A) and (B) can be obtained.
 このような絞り部244がある場合、本発明者が実験的検討をしたところ、ジェット吐出孔238から気泡が吐き出され易くなるという知見を得た。このようにジェット吐出孔238から気泡が吐き出されると、気泡の破裂音が生じたり、見た目の面から違和感があるため、使用者に不快感を与えかねない。 In the case where such a throttle portion 244 is present, the present inventor conducted an experimental study and found that bubbles are easily discharged from the jet discharge hole 238. When air bubbles are discharged from the jet discharge holes 238 as described above, a bursting sound of the air bubbles may be generated or the user may feel uncomfortable from the viewpoint of appearance, which may cause discomfort to the user.
 この現象のメカニズムは明らかではないが、以下の理由によるものと推察される。前述のように、左リム通水路232Lに洗浄水Wが供給されると、図18(b)に示すように、始端側水路部分232dが先に洗浄水Wで満たされる。このとき、終端側水路部分232eには空気Arが抜けずに残る場合がある。この場合、絞り部244の通水部分244bから見て終端側に空気Arが存在する状態となる。よって、この状態のままで通水部分244bを通して終端側水路部分232eに洗浄水Wが流れ込むと、終端側水路部分232e内の空気Arを巻き込みつつ洗浄水Wがジェット用連通路240に流れ込もうとする。この巻き込まれた空気がジェット吐出孔238から気泡として吐き出されてしまうものと推察される。 The mechanism of this phenomenon is not clear, but is presumed to be due to the following reasons. As described above, when the cleaning water W is supplied to the left rim water passage 232L, the starting end side water channel portion 232d is filled with the cleaning water W first as shown in FIG. At this time, the air Ar may remain without leaving the terminal-side water channel portion 232e. In this case, air Ar is present on the terminal end side as viewed from the water passage portion 244b of the throttle portion 244. Accordingly, when the cleaning water W flows into the terminal side water channel portion 232e through the water flow portion 244b in this state, the cleaning water W flows into the jet communication path 240 while entraining the air Ar in the terminal side water channel portion 232e. And It is presumed that the entrained air is discharged as bubbles from the jet discharge hole 238.
 これに対して、図15に示すように、本実施形態に係る絞り部244は、始端側水路部分232dと終端側水路部分232eとの間で、これらの上側領域を通る流体の流れを遮るように壁部分244aが形成される。壁部分244aは、図16に示すように、絞り部244の形成位置において、左リム通水路232Lの水路幅方向の全幅に亘る範囲で形成される。 On the other hand, as shown in FIG. 15, the throttle portion 244 according to the present embodiment blocks the flow of fluid passing through these upper regions between the start-side water channel portion 232 d and the end-side water channel portion 232 e. A wall portion 244a is formed. As shown in FIG. 16, the wall portion 244 a is formed in a range extending over the entire width of the left rim water passage 232 </ b> L in the water passage width direction at the position where the throttle portion 244 is formed.
 この利点を説明する。図19に示すように、左リム通水路232Lの始端側水路部分232dが先に洗浄水Wで満たされ、終端側水路部分232eに空気Arが残る場合を考える。この場合、本実施形態によれば、絞り部244の通水部分244bから見て終端側には空気Arではなく洗浄水Wが存在する状態となる。よって、この状態のままで通水部分244bを通して終端側水路部分232eに洗浄水Wが流れ込んだとしても、終端側水路部分232e内の空気が洗浄水Wに巻き込まれ難くなり、ジェット用連通路240に空気が流れ込み難くなる。このため、左リム通水路232Lに絞り部244を形成した場合でも、ジェット吐出孔238からの気泡の吐き出しを防止できる。 Explain this advantage. As shown in FIG. 19, a case is considered in which the start end side water channel portion 232d of the left rim water passage 232L is filled with the cleaning water W first, and the air Ar remains in the end side water channel portion 232e. In this case, according to the present embodiment, the cleaning water W is present instead of the air Ar on the end side as viewed from the water passage portion 244b of the throttle portion 244. Therefore, even if the cleaning water W flows into the terminal-side water channel portion 232e through the water flow portion 244b in this state, the air in the terminal-side water channel portion 232e is not easily caught in the cleaning water W, and the jet communication path 240 It becomes difficult for air to flow into. For this reason, even when the throttle portion 244 is formed in the left rim water passage 232L, the discharge of bubbles from the jet discharge hole 238 can be prevented.
 また、この他にも、前述のような絞り部244の壁部分244が形成されることで、左リム通水路232L内に洗浄水が供給されたときに、左リム通水路232Lの終端側水路部分232eから空気Arが外部に逃げずに残り易くなる。よって、絞り部244の通水部分244bを洗浄水Wが通ったとき、その空気Arが抵抗となることで、終端側水路部分232e内に流れ込む洗浄水が広がり難くなる。この結果、洗浄水が終端側水路部分232e内で広がることによる水勢の低下を防止でき、ジェット吐出孔238から勢いよく洗浄水を吐き出し易くなる。 In addition, by forming the wall portion 244 of the throttle portion 244 as described above, when the cleaning water is supplied into the left rim water passage 232L, the terminal side water passage of the left rim water passage 232L. Air Ar tends to remain from the portion 232e without escaping outside. Therefore, when the cleaning water W passes through the water flow portion 244b of the throttle portion 244, the air Ar becomes a resistance, so that the cleaning water flowing into the terminal side water channel portion 232e is difficult to spread. As a result, it is possible to prevent a decrease in the water force due to the spreading of the cleaning water in the terminal-side water channel portion 232e, and to easily discharge the cleaning water from the jet discharge hole 238.
 なお、図16に示すように、絞り部244の壁部分244aは、絞り部244の形成位置において、左リム通水路232Lの水路高さをH0としたとき、左リム通水路232Lの内上面からの高さ寸法H1が水路高さH0の1/2以上となるように形成される。絞り部244の壁部分244aは、左リム通水路232Lの上内面からの高さ寸法H1が水路高さH0の3/4以上となるように形成されてもよい。 As shown in FIG. 16, the wall portion 244a of the throttle portion 244 is located from the inner upper surface of the left rim water passage 232L when the height of the left rim water passage 232L is H0 at the formation position of the throttle portion 244. Is formed such that the height dimension H1 is equal to or greater than ½ of the water channel height H0. The wall portion 244a of the throttle portion 244 may be formed such that the height dimension H1 from the upper inner surface of the left rim water passage 232L is 3/4 or more of the water passage height H0.
 以上、実施の形態に基づき第2発明を説明したが、実施の形態は、第2発明の原理、応用を示すにすぎない。また、実施の形態には、請求の範囲に規定された第2発明の思想を逸脱しない範囲において、多くの変形例や配置の変更が可能である。 As described above, the second invention has been described based on the embodiment, but the embodiment only shows the principle and application of the second invention. In the embodiment, many modifications and changes in arrangement can be made without departing from the spirit of the second invention defined in the claims.
 水洗大便器210は、洗い落し式、サイホン式等の洗浄方式により便鉢部214内を洗浄してもよい。水洗大便器210は、水道直圧式、重力を用いた重力給水式等の給水方式が用いられてもよい。便器本体212は壁掛け式便器を例に説明したが、トイレ室の床面上に設置される床置き式便器でもよい。また、便器本体212は陶器の他に樹脂等を素材としてもよい。 The flush toilet 210 may wash the inside of the toilet bowl 214 by a washing method such as a wash-off type or a siphon type. The flush toilet 210 may use a water supply system such as a direct water pressure system or a gravity water supply system using gravity. The toilet body 212 is described as an example of a wall-mounted toilet, but may be a floor-standing toilet installed on the floor surface of a toilet room. The toilet body 212 may be made of resin or the like in addition to pottery.
 左リム通水路232L、右リム通水路232Rは共通通水路234の下流端部から分岐して形成される例を説明したが、これらは別々に分離して形成されてもよい。 Although the left rim water passage 232L and the right rim water passage 232R have been described as being branched from the downstream end of the common water passage 234, they may be formed separately.
 ジェット吐出孔238は便鉢部214の底部に形成される例を説明したが、排水通路部216のトラップ部220に形成されてもよい。この場合、ジェット吐出孔238から吐き出される洗浄水により、トラップ部220の下流側に向かう水流が封水218に形成され、汚物の排出が促進される。つまり、ジェット吐出孔238は便鉢部214の底部または排水通路部216に形成されていればよい。これらの場合、汚物の排出を促進するための水流が溜水228又は封水218に形成されることになる。 Although the example in which the jet discharge hole 238 is formed in the bottom portion of the toilet bowl 214 has been described, it may be formed in the trap portion 220 of the drainage passage portion 216. In this case, the water flowing toward the downstream side of the trap portion 220 is formed in the sealed water 218 by the cleaning water discharged from the jet discharge holes 238, and the discharge of filth is promoted. That is, the jet discharge hole 238 only needs to be formed in the bottom of the toilet bowl 214 or the drainage passage 216. In these cases, a water flow for promoting discharge of filth is formed in the stored water 228 or the sealed water 218.
 ジェット用連通路240は、ジェット吐出孔238と左リム通水路232Lを連通する例を説明したが、ジェット吐出孔238と右リム通水路232Rを連通してもよい。また、ジェット用連通路240の水導入口240dは、左リム通水路232Lの終端部232bに開口する例を説明したが、リム通水路のリム吐水孔より終端側に開口していればよい。また、ジェット用連通路240の水導入口240dは左リム通水路232Lの内底面に開口する例を説明した。水導入口240dはリム通水路の内壁面に開口していればよく、リム通水路の内底面の他にも内側面に開口していてもよい。 In the jet communication path 240, the example in which the jet discharge hole 238 communicates with the left rim water passage 232L has been described, but the jet discharge hole 238 and the right rim water passage 232R may communicate with each other. Moreover, although the water introduction port 240d of the communicating path 240 for jets demonstrated the example opened to the termination | terminus part 232b of the left rim water passage 232L, it should just be opened to the terminal side from the rim water discharge hole of the rim water passage. Further, the example in which the water introduction port 240d of the jet communication passage 240 opens on the inner bottom surface of the left rim water passage 232L has been described. The water introduction port 240d only needs to be opened on the inner wall surface of the rim water passage, and may be opened on the inner side surface in addition to the inner bottom surface of the rim water passage.
 図16の例では、絞り部244の通水部分244bは、左リム通水路232Lの内壁面と絞り部244の壁部分244aにより囲まれて形成される例を説明した。この他に、通水部分244bは、図20に示すように、絞り部244の壁部分244aに切り欠き256を形成し、その切り欠き256と左リム通水路232Lの内壁面等によって囲まれて形成されてもよい。また、通水部分244bは、図20に示すように、複数箇所に形成されていてもよい。この他に、通水部分244bは、絞り部244の壁部分244aに貫通孔を形成し、その壁部分244aの貫通孔のみによって形成されてもよい。 In the example of FIG. 16, the water flow portion 244 b of the throttle portion 244 has been described as being surrounded by the inner wall surface of the left rim water passage 232 </ b> L and the wall portion 244 a of the throttle portion 244. In addition, as shown in FIG. 20, the water passage portion 244b is formed with a notch 256 in the wall portion 244a of the throttle portion 244, and is surrounded by the notch 256 and the inner wall surface of the left rim water passage 232L. It may be formed. Moreover, the water flow part 244b may be formed in multiple places, as shown in FIG. In addition, the water passage portion 244b may be formed by forming a through hole in the wall portion 244a of the throttle portion 244 and only the through hole of the wall portion 244a.
 図11の例では、左リム通水路232Lに供給される洗浄水を吐き出す第1リム吐水孔36Lは左右中心線CLに対して左側に配置され、右リム通水路232Rに供給される洗浄水を吐き出す第2リム吐水孔236Rは左右中心線CLに対して右側に配置される例を説明した。この他にも、第1リム吐水孔236Lは左右中心線CLに対して右側に配置されてもよいし、第2リム吐水孔236Rは左右中心線CLに対して左側に配置されてもよい。いずれにしても、各リム吐水孔236L、236Rの位置は特に限られない。また、リム部226には更に他のリム吐水孔が形成されてもよい。 In the example of FIG. 11, the first rim water discharge hole 36L that discharges the cleaning water supplied to the left rim water passage 232L is arranged on the left side with respect to the left-right center line CL, and the cleaning water supplied to the right rim water passage 232R The second rim water discharge hole 236R to be discharged has been described as being disposed on the right side with respect to the left-right center line CL. In addition, the first rim water discharge hole 236L may be disposed on the right side with respect to the left-right center line CL, and the second rim water discharge hole 236R may be disposed on the left side with respect to the left-right center line CL. In any case, the position of each rim water discharge hole 236L, 236R is not particularly limited. Further, another rim water discharge hole may be formed in the rim portion 226.
 図17では各リム通水路232L、232Rの内底面に勾配250、252を設けることで、各リム吐水孔236L、236Rより水導入口240dが低位置に配置されるようにした例を説明した。この他にも、第1リム通水路232Lの第1リム吐水孔236Lから終端側に向けて下り段となる段差を設けることで、第1リム吐水孔236Lより水導入口240dが低位置に配置されてもよい。 FIG. 17 illustrates an example in which the water inlets 240d are arranged at lower positions than the rim water discharge holes 236L and 236R by providing the gradients 250 and 252 on the inner bottom surfaces of the rim water passages 232L and 232R. In addition, the water introduction port 240d is disposed at a lower position than the first rim water discharge hole 236L by providing a step which becomes a step downward from the first rim water discharge hole 236L of the first rim water passage 232L toward the terminal side. May be.
 また、リム吐水孔236L、236Rはリム部226の内周面に沿って周方向の一方側に向けて洗浄水を吐き出す例を説明した。リム部226に形成される吐水口は、便鉢部214内に洗浄水を吐き出すためのものであればよく、洗浄水の吐き出し方向はこれに限られない。たとえば、下向きに洗浄水を吐き出してもよい。 Further, the rim water discharge holes 236L and 236R have been described as examples in which cleaning water is discharged toward one side in the circumferential direction along the inner peripheral surface of the rim portion 226. The spout formed in the rim portion 226 may be any one for discharging the wash water into the toilet bowl 214, and the discharge direction of the wash water is not limited to this. For example, the washing water may be discharged downward.
 ジェット吐出孔238は凹部224の左側かつ前側の壁面に形成される例を説明したが、その位置はこれに限られない。 Although the example in which the jet discharge hole 238 is formed on the wall surface on the left side and the front side of the recess 224 has been described, the position thereof is not limited thereto.
 以上の実施形態、変形例により具体化される発明を一般化すると、以下の技術的思想が導かれる。 Generalizing the invention embodied by the above embodiments and modifications leads to the following technical idea.
 第2の発明の第2態様の水洗大便器は、第1態様において、前記第1リム通水路には、前記第1リム吐水孔と前記水導入口の間に、洗浄水の流れを絞るための絞り部が形成されてもよい。
 この態様によれば、第1リム通水路の絞り部より始端側にある水路部分の方が、絞り部より終端側にある水路部分よりも、早期に洗浄水が満たされ易くなる。よって、絞り部より始端側にある水路部分の洗浄水による水圧を早期に高めることができ、その水路部分から第1リム吐水孔を通して高水圧の洗浄水を早期に吐き出せるようになる。
In the flush toilet of the second aspect of the second invention, in the first aspect, in the first rim water passage, the flow of the wash water is restricted between the first rim water discharge hole and the water inlet. A narrowed portion may be formed.
According to this aspect, the water channel portion that is closer to the start side than the throttle portion of the first rim water passage can be more easily filled with the cleaning water earlier than the water channel portion that is closer to the end side than the throttle portion. Therefore, the water pressure due to the cleaning water in the water channel portion on the start end side from the throttle portion can be increased early, and the high water pressure cleaning water can be quickly discharged from the water channel portion through the first rim water discharge hole.
 第2発明の第3態様の水洗大便器は、第1態様又は第2態様において、前記水導入口は、前記第1リム吐水孔より低位置に少なくとも一部が配置されてもよい。
 この態様によれば、第1リム通水路内の残留水を、第1リム吐水孔より低位置にある水導入口を通して排出し易くなり、第1リム吐水孔を通して便鉢部内に流れる水の量を減らし易くなる。これにより、第1リム吐水孔から便鉢部の内面をすじ状水が流れ落ちるのを防止できる。
In the flush toilet of the third aspect of the second invention, in the first aspect or the second aspect, at least a part of the water introduction port may be disposed at a position lower than the first rim water spouting hole.
According to this aspect, it becomes easy to discharge the residual water in the first rim water passage through the water introduction port located lower than the first rim water discharge hole, and the amount of water flowing into the toilet bowl through the first rim water discharge hole. It becomes easy to reduce. Thereby, it is possible to prevent the streak-like water from flowing down from the first rim spouting hole to the inner surface of the toilet bowl portion.
 第2発明の第4態様の水洗大便器は、第2態様において、前記水導入口は、前記第1リム吐水孔より低位置に少なくとも一部が配置され、前記絞り部は、前記第1リム通水路の内底面上を伝わる残留水を、前記第1リム吐水孔側から前記水導入口側に向けて導水可能な形状であってもよい。
 この態様によれば、第1リム通水路内の残留水が絞り部に対して第1リム吐水孔側から水導入口側に淀みなく流れ易くなる。よって、第1リム通水路に絞り部が形成される場合でも、第1リム通水路内の残留水を連通路を通して排出し易くなる。これにより、第1リム吐水孔から便鉢部の内面をすじ状水が流れ落ちるのを効果的に防止できる。
A flush toilet according to a fourth aspect of the second aspect of the present invention is the flush toilet according to the second aspect, wherein the water inlet is at least partially disposed at a position lower than the first rim water spouting hole, and the throttle portion is the first rim. The shape which can guide the residual water which transmits on the inner bottom face of a water flow path from the said 1st rim water discharge hole side toward the said water inlet side may be sufficient.
According to this aspect, it becomes easy for residual water in the first rim water passage to flow without stagnation from the first rim water discharge hole side to the water introduction port side with respect to the throttle portion. Therefore, even when the throttle portion is formed in the first rim water passage, the residual water in the first rim water passage can be easily discharged through the communication passage. Thereby, it is possible to effectively prevent the streak-like water from flowing down from the first rim spouting hole to the inner surface of the toilet bowl portion.
 第2発明の第5態様の水洗大便器は、第3態様又は第4態様において、前記第1リム通水路の内底面には、前記第1リム吐水孔から奥側に向かうにつれて下り傾斜となる勾配が設けられてもよい。
 この態様によれば、第1リム通水路内の残留水を自重によって水導入口まで導き易くなり、第1リム吐水孔を通して便鉢部内に流れる水の量を減らし易くなる。これにより、第1リム吐水孔から便鉢部の内面をすじ状水が流れ落ちるのを効果的に防止できる。
A flush toilet according to a fifth aspect of the second invention is the third aspect or the fourth aspect, wherein the inner bottom surface of the first rim water passage is inclined downward from the first rim water discharge hole toward the back side. A gradient may be provided.
According to this aspect, the residual water in the first rim water passage can be easily guided to the water introduction port by its own weight, and the amount of water flowing into the toilet bowl through the first rim water discharge hole can be easily reduced. Thereby, it is possible to effectively prevent the streak-like water from flowing down from the first rim spouting hole to the inner surface of the toilet bowl portion.
 第2発明の第6態様の水洗大便器は、第2態様又は第4態様において、前記絞り部は、該絞り部に対して始端側の水路部分と、該絞り部に対して終端側の水路部分との間で、これらの上側領域を通る流体の流れを遮る壁部分を有してもよい。
 始端側水路部分が先に洗浄水で満たされ、終端側水路部分の上側領域に空気が残る場合を考える。この場合、本態様によれば、絞り部の通水部分から見て終端側には空気ではなく洗浄水が存在し易い状態になる。よって、この状態のままで絞り部を通して終端側水路部分に洗浄水が流れ込んだとしても、終端側水路部分内の空気が洗浄水に巻き込まれ難くなり、連通路に空気が流れ込み難くなる。このため、第1リム通水路に絞り部を形成した場合でも、吐出孔からの気泡の吐き出しを防止できる。
A flush toilet according to a sixth aspect of the second invention is the flush toilet according to the second aspect or the fourth aspect, wherein the throttle portion includes a water channel portion on a start side with respect to the throttle portion, and a water channel on a terminal side with respect to the throttle portion. Between the portions, there may be wall portions that block the flow of fluid through these upper regions.
Consider a case where the start side water channel portion is first filled with the wash water and air remains in the upper region of the end side water channel portion. In this case, according to this aspect, not the air but the cleaning water is likely to exist on the end side when viewed from the water passing portion of the throttle portion. Therefore, even if the cleaning water flows into the terminal-side water channel portion through the throttle portion in this state, the air in the terminal-side water channel portion is not easily caught in the cleaning water, and the air does not easily flow into the communication channel. For this reason, even when the throttle portion is formed in the first rim water passage, the discharge of bubbles from the discharge hole can be prevented.
 第2発明の第7態様の水洗大便器は、第1態様から第6態様のいずれかにおいて、前記第1リム吐水孔は、前記便器本体の左右一方側に配置され、前記水導入口は、前記便器本体の左右一方側にて前記第1リム吐水孔より該便器本体の前方側に配置されてもよい。 The flush toilet of the seventh aspect of the second invention is the flush toilet according to any one of the first to sixth aspects, wherein the first rim water spouting hole is disposed on one side of the toilet body, and the water inlet is You may arrange | position in the front side of this toilet bowl main body from the said 1st rim water discharge hole in the left-right one side of the said toilet bowl main body.
 なお、以上の実施形態、変形例には、以下の項目に記載の発明が含まれているともいえる。
[項目]
 リム部が上端部に形成される便鉢部と、
 前記リム部の外周側に形成される第1リム通水路と、
 前記第1リム通水路内から前記便鉢部内に洗浄水を吐水するための第1リム吐水孔と、
 前記便鉢部の底部、又は、該底部に接続される排水通路部に形成される吐出孔と、
 前記第1リム通水路と前記吐出孔を連通する連通路と、を備え、
 前記第1リム吐水孔は、前記第1リム通水路の始端側より終端側に向かう経路の途中位置から分岐して形成され、
 前記連通路の水導入口は、前記第1リム吐水孔より前記第1リム通水路の終端側に開口し、
 前記第1リム通水路には、前記第1リム吐水孔と前記水導入口の間に、洗浄水の流れを絞るための絞り部が形成されることを特徴とする水洗大便器。
In addition, it can be said that the above described embodiments and modifications include the inventions described in the following items.
[item]
A toilet bowl with a rim formed at the upper end;
A first rim water passage formed on the outer peripheral side of the rim portion;
A first rim spout for discharging wash water from the first rim water passage into the toilet bowl,
A discharge hole formed in the bottom of the toilet bowl, or a drainage passage connected to the bottom;
A communication passage that communicates the first rim water passage and the discharge hole,
The first rim water discharge hole is formed by branching from a midway position of the path from the start end side to the terminal end side of the first rim water passage,
The water introduction port of the communication passage opens from the first rim water discharge hole to the terminal end side of the first rim water passage,
The flush toilet according to claim 1, wherein a throttle portion for restricting a flow of washing water is formed in the first rim water passage between the first rim water discharge hole and the water introduction port.
10…水洗大便器、14…便鉢部、16…入口、18…トラップ部、24…リム部、26…吐水部、28…ジェット吐出口(吐出口)、30A…右リム吐水口(第1吐水口)、30B…左リム吐水口(第2吐水口)、44…溜水、56A…右リム通水路(第1通水路)、56B…左リム通水路(第2通水路)、58…ジェット用給水路(給水路)、64…導入口、66…大気空間、210…水洗大便器、214…便鉢部、216…排水通路部、226…リム部、232L…左リム通水路(第1リム通水路)、232R…右リム通水路(第2リム通水路)、236L…左リム吐水孔(第1リム吐水孔)、236L…右リム吐水孔(第2リム吐水孔)、238…ジェット吐出孔(吐出孔)、240…ジェット用連通路(連通路)、240d…水導入口、244…絞り部、250…勾配、252…勾配。 DESCRIPTION OF SYMBOLS 10 ... Flush toilet, 14 ... Toilet bowl part, 16 ... Inlet, 18 ... Trap part, 24 ... Rim part, 26 ... Water discharge part, 28 ... Jet discharge port (discharge port), 30A ... Right rim water discharge port (1st Water outlet), 30B ... Left rim water outlet (second water outlet), 44 ... Reserved water, 56A ... Right rim water passage (first water passage), 56B ... Left rim water passage (second water passage), 58 ... Jet water supply path (water supply path), 64 ... inlet, 66 ... atmospheric space, 210 ... flush toilet, 214 ... toilet bowl part, 216 ... drainage passage part, 226 ... rim part, 232L ... left rim water passage (first 1 rim water passage), 232R ... right rim water passage (second rim water passage), 236L ... left rim water outlet (first rim water outlet), 236L ... right rim water outlet (second rim water outlet), 238 ... Jet discharge hole (discharge hole), 240 ... jet communication path (communication path), 240d ... water guide Mouth, 244 ... throttle section, 250 ... gradient, 252 ... gradient.
 本発明は、水洗大便器に関する。 The present invention relates to a flush toilet.

Claims (13)

  1.  便鉢部と、
     前記便鉢部の底部に接続され、前記底部に溜められる溜水の非洗浄時の水位を定めるトラップ部と、
     前記底部に形成されるジェット吐出口と、前記ジェット吐出口に洗浄水を供給するためのジェット用給水路とを有し、前記ジェット吐出口から洗浄水を吐き出すことにより、該底部内に水流を形成する吐水部と、を備え、
     前記ジェット吐出口は、非洗浄時の前記溜水の水位を上下に跨がるように形成されることを特徴とする水洗大便器。
    Toilet bowl,
    A trap portion that is connected to the bottom of the toilet bowl and determines the water level during non-washing of the water stored in the bottom;
    A jet discharge port formed in the bottom portion and a jet water supply channel for supplying cleaning water to the jet discharge port; by discharging the cleaning water from the jet discharge port, a water flow is generated in the bottom portion; A water discharge portion to be formed,
    The flush toilet is characterized in that the jet discharge port is formed so as to straddle the level of the stored water when not washed.
  2.  前記便鉢部及び前記吐水部は、前記ジェット用給水路内の空気が前記ジェット吐出口から排気され終えてから、前記ジェット吐出口全体が水没するように構成されることを特徴とする請求項1に記載の水洗大便器。 The stool section and the water discharge section are configured such that the entire jet discharge port is submerged after the air in the jet water supply channel has been exhausted from the jet discharge port. The flush toilet according to 1.
  3.  前記吐水部は、前記便鉢部内に洗浄水を吐き出すためのリム吐水口を有し、
     前記便鉢部及び前記吐水部は、前記ジェット吐出口から洗浄水が吐き出されてから、前記リム吐水口から吐き出される洗浄水が前記溜水に着水するように構成されることを特徴とする請求項1に記載の水洗大便器。
    The water discharge unit has a rim water discharge port for discharging wash water into the toilet bowl,
    The toilet bowl portion and the water discharge portion are configured such that the wash water discharged from the rim water discharge port contacts the pooled water after the wash water is discharged from the jet discharge port. The flush toilet according to claim 1.
  4.  前記ジェット用給水路は、洗浄水を導入するための導入口から前記ジェット吐出口にかけての範囲において、非洗浄時に連続する大気空間が存在するように形成されることを特徴とする請求項1から3のいずれかに記載の水洗大便器。 2. The jet water supply channel is formed so that a continuous atmospheric space exists during non-cleaning in a range from an inlet for introducing cleaning water to the jet outlet. The flush toilet according to any one of 3 above.
  5.  前記便鉢部は、該便鉢部の上端部を形成するリム部を有し、
     前記吐水部は、前記リム部に形成されるリム吐水口と、前記リム部の裏側に形成され、前記リム吐水口に洗浄水を供給するためのリム通水路と、を有し、
     前記リム通水路の内底面には、前記リム吐水口から奥側に向かうにつれて下り傾斜となる勾配が設けられることを特徴とする請求項1から4のいずれかに記載の水洗大便器。
    The toilet bowl part has a rim part forming the upper end part of the toilet bowl part,
    The water discharge portion has a rim water discharge port formed in the rim portion, and a rim water passage formed on the back side of the rim portion for supplying cleaning water to the rim water discharge port,
    The flush toilet according to any one of claims 1 to 4, wherein the inner bottom surface of the rim water passage is provided with a slope that is inclined downward from the rim spout to the back side.
  6.  前記ジェット用給水路内に洗浄水を導入するための導入口は、前記リム通水路の内壁面に形成され、前記リム吐水口より低位置に少なくとも一部が配置されることを特徴とする請求項5に記載の水洗大便器。 The introduction port for introducing cleaning water into the jet water supply passage is formed on an inner wall surface of the rim water passage, and at least a part thereof is disposed at a position lower than the rim water discharge port. Item 6. A flush toilet according to Item 5.
  7.  リム部が上端部に形成される便鉢部と、
     前記リム部の外周側に形成される便器本体の左右一方側の第1リム通水路と、
     前記リム部の外周側に形成される便器本体の左右他方側の第2リム通水路と、
     前記第1リム通水路内から前記便鉢部内に吐水するための第1リム吐水孔と、
     前記第2リム通水路内から前記便鉢部内に吐水するための第2リム吐水孔と、
     前記便鉢部の底部、又は、該底部に接続される排水通路部に形成される吐出孔と、
     前記第1リム通水路と前記吐出孔を連通する連通路と、を備え、
     前記第1リム吐水孔は、前記第1リム通水路の始端側より終端側に向かう経路の途中位置から分岐して形成され、
     前記連通路の水導入口は、前記第1リム吐水孔より前記第1リム通水路の終端側に開口することを特徴とする水洗大便器。
    A toilet bowl with a rim formed at the upper end;
    A first rim water passage on one of the left and right sides of the toilet body formed on the outer peripheral side of the rim portion;
    A second rim water passage on the other side of the toilet body formed on the outer peripheral side of the rim portion;
    A first rim water discharge hole for discharging water into the toilet bowl from the first rim water passage;
    A second rim water discharge hole for discharging water into the toilet bowl from the second rim water passage;
    A discharge hole formed in the bottom of the toilet bowl, or a drainage passage connected to the bottom;
    A communication passage that communicates the first rim water passage and the discharge hole,
    The first rim water discharge hole is formed by branching from a midway position of the path from the start end side to the terminal end side of the first rim water passage,
    The flush toilet is characterized in that the water introduction port of the communication passage opens from the first rim water discharge hole to the end side of the first rim water passage.
  8.  前記第1リム通水路には、前記第1リム吐水孔と前記水導入口の間に、洗浄水の流れを絞るための絞り部が形成されることを特徴とする請求項7に記載の水洗大便器。 8. The water washing according to claim 7, wherein the first rim water passage is formed with a throttle portion for restricting a flow of washing water between the first rim water discharge hole and the water introduction port. toilet bowl.
  9.  前記水導入口は、前記第1リム吐水孔より低位置に少なくとも一部が配置されることを特徴とする請求項7または8に記載の水洗大便器。 The flush toilet according to claim 7 or 8, wherein at least a part of the water introduction port is disposed at a position lower than the first rim water discharge hole.
  10.  前記水導入口は、前記第1リム吐水孔より低位置に少なくとも一部が配置され、
     前記絞り部は、前記第1リム通水路の内底面上を伝わる残留水を、前記第1リム吐水孔側から前記水導入口側に向けて導水可能な形状であることを特徴とする請求項8に記載の水洗大便器。
    The water inlet is at least partially disposed at a position lower than the first rim water spouting hole,
    The throttle part has a shape capable of guiding residual water transmitted on the inner bottom surface of the first rim water passage from the first rim water discharge hole side toward the water introduction port side. 8. A flush toilet according to 8.
  11.  前記第1リム通水路の内底面には、前記第1リム吐水孔から奥側に向かうにつれて下り傾斜となる勾配が設けられることを特徴とする請求項9または10に記載の水洗大便器。 The flush toilet according to claim 9 or 10, wherein the inner bottom surface of the first rim water passage is provided with a slope that is inclined downward from the first rim water discharge hole toward the back side.
  12.  前記絞り部は、該絞り部に対して始端側の水路部分と、該絞り部に対して終端側の水路部分との間で、これらの上側領域を通る流体の流れを遮る壁部分を有することを特徴とする請求項8または10に記載の水洗大便器。 The throttle portion has a wall portion that blocks a flow of fluid passing through the upper region between a water channel portion on the start side with respect to the throttle portion and a water channel portion on the terminal side with respect to the throttle portion. The flush toilet according to claim 8 or 10, wherein:
  13.  前記第1リム吐水孔は、前記便器本体の左右一方側に配置され、
     前記水導入口は、前記便器本体の左右一方側にて前記第1リム吐水孔より該便器本体の前方側に配置されることを特徴とする請求項7から12のいずれかに記載の水洗大便器。
    The first rim spouting hole is disposed on one of the left and right sides of the toilet body,
    The flushing size according to any one of claims 7 to 12, wherein the water introduction port is arranged on the front side of the toilet body with respect to the first rim spouting hole on one side of the toilet body. Toilet bowl.
PCT/JP2016/069767 2015-08-11 2016-07-04 Flush toilet device WO2017026202A1 (en)

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CN201680044823.1A CN107849841B (en) 2015-08-11 2016-07-04 Water closet
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CN112310188A (en) * 2019-07-23 2021-02-02 珠海格力电器股份有限公司 Lateral variable doping terminal structure and manufacturing method thereof
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