WO2018142957A1 - 水洗便器 - Google Patents

水洗便器 Download PDF

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Publication number
WO2018142957A1
WO2018142957A1 PCT/JP2018/001420 JP2018001420W WO2018142957A1 WO 2018142957 A1 WO2018142957 A1 WO 2018142957A1 JP 2018001420 W JP2018001420 W JP 2018001420W WO 2018142957 A1 WO2018142957 A1 WO 2018142957A1
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WO
WIPO (PCT)
Prior art keywords
water supply
bowl
shelf
water
supply space
Prior art date
Application number
PCT/JP2018/001420
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
真吾 寳角
Original Assignee
パナソニックＩｐマネジメント株式会社
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 JP2017015754A external-priority patent/JP6706800B2/ja
Priority claimed from JP2017015756A external-priority patent/JP6796800B2/ja
Priority claimed from JP2017015755A external-priority patent/JP6706801B2/ja
Priority claimed from JP2017015753A external-priority patent/JP6796799B2/ja
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201880009093.0A priority Critical patent/CN110249098B/zh
Publication of WO2018142957A1 publication Critical patent/WO2018142957A1/ja

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • E03D11/08—Bowls with means producing a flushing water swirl

Definitions

  • the present invention relates to a flush toilet.
  • Patent Document 1 Conventionally, a flush toilet having a shelf part on a part of a bowl surface shown in Patent Document 1 is known.
  • the shelf is formed in an annular shape in a plan view along the upper edge opening in a portion below the upper edge opening of the bowl surface, and the upper surface faces upward. While the cleaning water discharged in the circumferential direction of the bowl is placed on the upper surface of the shelf and circulates, the cleaning water is caused to flow down to the inside of the bowl diameter (bottom side of the central portion of the bowl surface).
  • a covering wall portion protrudes upward in part in the circumferential direction of the bowl, and a space covered by the covering wall portion on the shelf portion becomes a water supply space to which water from the water supply portion is supplied.
  • the water supplied from the water supply section to the water supply space is directed from the water outlet at the downstream end of the water supply space (downstream end of the covering wall section) to the upper surface of the shelf in the circumferential direction of the bowl. Discharged. At this time, it was difficult for the washing water to flow down to the inside of the bowl diameter at the portion immediately downstream of the water outlet.
  • the present invention was invented in view of the above-described conventional problems, and an object thereof is to provide a flush toilet in which flush water can easily flow down to the inside of the bowl diameter at a portion immediately downstream of the water outlet.
  • a flush toilet includes a bowl surface that opens upward to receive filth and washing water.
  • the bowl surface has a shelf and an upper wall surface.
  • the shelf is formed in an annular shape or a C shape in plan view along the upper edge opening at a portion lower than a predetermined height from the upper edge opening of the bowl surface, and faces upward.
  • the upper wall surface rises from the outer end of the bowl diameter on the upper surface of the shelf, and the normal line faces the inner side of the bowl diameter.
  • the flush toilet has a covering wall portion protruding upward in a part of the upper surface of the shelf in the circumferential direction of the bowl.
  • a space sandwiched between the cover wall portion and the upper wall surface on the upper surface of the shelf portion is a water supply space to which water from the water supply portion is supplied, and corresponds to the water supply space on the upper surface of the shelf portion.
  • the part to do becomes the water supply surface.
  • a portion of the upper surface of the shelf that is downstream of the water supply surface is a shelf surface that is not covered by the cover wall.
  • the end in the bowl circumferential direction which is the downstream end of the water supply space, serves as a spout for discharging water to the shelf surface.
  • the upper wall surface of the water supply space has a protrusion that protrudes inward of the bowl diameter and whose upper surface becomes the water supply surface.
  • the horizontal length in the cross section orthogonal to the bowl circumferential direction of the lower water supply space which is the lower region of the range where the projecting portion is located in the upper and lower ranges of the water supply space, is the region above the lower water supply space of the water supply space It is formed shorter than the horizontal length in the cross section orthogonal to the bowl circumferential direction of the upper water supply space.
  • FIG. 1 is a plan view of the flush toilet of the first embodiment.
  • 2 is a cross-sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along line BB in FIG.
  • FIG. 4 is a plan view of the bowl portion of the flush toilet.
  • FIG. 5 is the perspective view which looked at the water supply space periphery of the bowl part same as the above from diagonally forward.
  • FIG. 6 is a sectional view of the periphery of the water supply space of the bowl portion as seen from the front in the bowl circumferential direction.
  • FIG. 7 is the perspective view which looked at the water supply space periphery of the bowl part of the flush toilet of 2nd embodiment from the front diagonally upward direction.
  • FIG. 8 is a cross-sectional view of the water supply space around the bowl portion as seen from the front in the bowl circumferential direction.
  • the present disclosure relates to a flush toilet, and more particularly, to a flush toilet having a shelf on a part of a bowl surface.
  • the flush toilet 1 includes a bowl portion 2 and a rim portion 3.
  • the bowl portion 2 has an inner surface serving as a bowl surface 20 that receives filth and washing water, and opens upward.
  • the bowl portion 2 has a bottom portion 21 at the center, and a drain port portion 22 is provided at the bottom portion 21.
  • the bottom 21 may not be formed at the exact center of the bowl 2.
  • the front, rear, left and right are defined as shown in FIGS.
  • the direction of the user sitting on the toilet seat (not shown) is assumed in design, and the direction in which the user sitting on this toilet seat faces is the front.
  • Back, left, and right are determined with respect to the front.
  • the drain port portion 22 is a cylindrical member integrally formed so that the inner space is continuous by connecting the horizontal tube portion 222 to the rear portion of the vertical tube portion 221. .
  • An upper end opening 220 of the vertical cylinder portion 221 that is the upstream end of the drain port portion 22 opens upward at the bottom portion 21 of the bowl portion 2.
  • a rear end opening of the horizontal cylindrical portion 222 that is the downstream end of the drain port portion 22 opens rearward.
  • the movable trap has a deformable trap cylinder formed of rubber, resin or the like.
  • the position and direction of the other end (tip) in the axial direction of the trap cylinder are changed by the motor.
  • the trap is configured in such a posture that the tip of the trap cylinder is located at the upper position and the tip opening faces upward, so that the accumulated water can be formed in the bowl portion 2.
  • the trapped water in the bowl portion 2 can be discharged together with the filth in a posture in which the tip of the trap cylinder is located at the lower position and the tip opening faces downward.
  • a movable trap need not be provided, and a fixed trap cylinder may be connected to the rear end of the horizontal cylinder portion 222.
  • the flush toilet 1 is integrally incorporated together with the movable trap to constitute a toilet device.
  • the toilet device may include various devices such as a deodorizing device and a local cleaning device as appropriate.
  • Rim 3 is provided on the upper edge of the bowl 2.
  • the toilet seat is placed on the upper surface 31 of the rim portion 3.
  • the inner edge of the rim portion 3 is located inside the upper end portion of the bowl portion 2 (upper edge opening 201 of the bowl surface 20) in plan view.
  • a skirt portion 11 made of resin is integrally fixed to the rim portion 3.
  • the skirt portion 11 covers the front, left, and right sides of the bowl portion 2.
  • limb part 3, and the skirt part 11 are integrally formed, and the flush toilet 1 is comprised.
  • a metal frame portion is provided to support the bowl portion 2, the rim portion 3, and the skirt portion 11 integrally formed of resin.
  • the rim portion 3 and the skirt portion 11 are provided in the flush toilet 1, but the rim portion 3 and the skirt portion 11 may not be provided in the flush toilet 1.
  • the bowl surface 20 is a part of the bowl surface 20 for flowing cleaning water passed in the bowl circumferential direction (arrow 10 in FIG. 4) along the upper edge opening 201 of the bowl surface 20. It has a shelf 4.
  • the shelf portion 4 is formed in a ring shape in plan view along the upper edge opening 201 at a portion lower than the upper edge opening 201 of the bowl surface 20 by a predetermined height (30 mm below the upper edge opening 201).
  • the shelf 4 is formed in an annular shape in plan view, but the shelf 4 may be formed in a C shape in plan view. In the first embodiment, the shelf 4 is formed at a portion 30 mm below the upper edge opening 201 of the bowl surface 20. However, the numerical value may be, for example, 5 to 100 mm, and is not limited.
  • the shelf 4 has an upper surface 40 facing upward as shown in FIGS.
  • the upper surface 40 faces in a direction in which the normal line forms an angle of 20 degrees or less with respect to the vertically upward direction.
  • the upper surface 40 and the portion immediately below the upper surface 40 of the bowl surface 20 are continuous with a smooth curve in a cross section perpendicular to the circumferential direction of the bowl, but are not particularly limited.
  • the bowl surface 20 rises as a part from the end of the upper surface 40 of the shelf 4 on the outer side of the bowl diameter (that is, the opposite side to the center side of the bowl surface 20 in plan view).
  • An upper wall surface 23 is provided.
  • the upper wall surface 23 is formed in an annular shape in plan view, and its normal line faces the inside of the bowl diameter.
  • the normal line of the upper wall surface 23 forms an angle of 0 to 40 degrees upward with respect to the horizontal direction.
  • the upper end of the upper wall surface 23 becomes the upper edge opening 201 of the bowl surface 20.
  • the rim portion 3 described above is provided so as to be continuous with the upper edge opening 201 of the bowl portion 2.
  • An upper wall surface 32 whose normal is directed downward from the horizontal direction is located above the upper surface 40 of the shelf 4.
  • the flush toilet 1 has a covering wall portion 42 protruding upward in a part of the upper surface 40 of the shelf portion 4 in the bowl circumferential direction.
  • a cover wall portion 42 of about 15 to 20 degrees as a central angle in the bowl circumferential direction is provided in a rearward portion on the right side of the bowl surface 20.
  • the water supply unit 6 is supplied with water from a water source such as a water supply or a hot water storage tank.
  • the water supply unit 6 has a water supply outlet 60 that discharges water at the downstream end, and the downstream end is introduced into the water supply space 5.
  • a water supply nozzle (not shown) as the water supply unit 6 is disposed in advance in the water supply space 5, and an external water supply pipe (not shown) for supplying water from a water source is connected to the water supply nozzle. It may be.
  • the water supply outlet 60 may be formed integrally with a portion constituting the water supply space 5 without using the water supply nozzle.
  • a portion corresponding to the water supply space 5 on the upper surface 40 of the shelf 4 is a water supply surface 50.
  • a portion of the upper surface 40 of the shelf 4 on the downstream side of the water supply surface 50 is a shelf surface 43 that is not covered by the cover wall 42.
  • a water supply outlet position at which the water supply outlet 60 is disposed at a predetermined position and orientation is determined at a portion on one end side in the bowl circumferential direction, which is the upstream end of the water supply space 5.
  • 3 and 4 show a state where the water supply section 6 is arranged in the water supply space 5 and the water supply outlet 60 is arranged at a predetermined position and orientation at the water supply outlet position.
  • the internal diameter (diameter) of the feed outlet 60 is 10 mm, it is not limited to the said numerical value in particular.
  • the predetermined position of the water supply outlet 60 is in the vicinity of the rear end portion of the water supply space 5 as shown in FIGS. 4 and 5 in the bowl circumferential direction. Further, as shown in FIG.
  • the predetermined position of the water supply outlet 60 is formed such that the lower end thereof is slightly higher than the water supply surface 50 (for example, 1 to 2 mm, but not particularly limited to the above numerical value). .
  • the lower end of the water supply outlet 60 may be positioned on the water supply surface 50.
  • the predetermined position of the water supply outlet 60 is the central portion of the water supply space 5 as shown in FIG.
  • the water supply outlet 60 does not need to be located in the center part in the bowl diameter inside / outside direction of the water supply surface 50.
  • the predetermined direction of the feed water outlet 60 is that the direction of the cleaning water discharged from the feed water outlet 60 (see arrow 61 in the figure) is the downstream side in the bowl circumferential direction (FIG. 4, This is the direction that is the front side in FIG.
  • the other end in the bowl circumferential direction which is the downstream end of the water supply space 5 becomes a spout 44 for discharging water to the shelf surface 43.
  • the upper wall surface 23 corresponding to the lower portion of the water supply outlet position protrudes inward of the bowl diameter, and the upper surface is the water supply surface
  • the protrusion 7 which becomes 50 is provided.
  • the position in the bowl circumferential direction of the protrusion part 7 is an area
  • the length of the protrusion 7 in the bowl circumferential direction is about half of the length of the water supply space 5 in the bowl circumferential direction.
  • the position and length of the protruding portion 7 in the bowl circumferential direction are not limited to the above.
  • the protrusion length 700 protruding inward of the bowl diameter of the protrusion 7 is formed to be shorter toward the upstream side.
  • the water supply space 5 is set to the lower water supply space 51 using the middle of the height of the protrusion 7 (in the first embodiment, the height is half the height of the protrusion 7 but not limited) as a virtual boundary. And divided into the upper water supply space 52.
  • a particularly narrowed region in the lower part of the range where the projecting portion 7 is located in the upper and lower range of the water supply space 5 is defined as a lower water supply space 51
  • an upper region of the lower water supply space 51 in the water supply space 5 is defined as To do.
  • the horizontal length 511 (the length in the bowl diameter inside / outside direction) in the cross section orthogonal to the bowl circumferential direction of the lower water supply space 51 is formed shorter than the horizontal length 521 in the cross section orthogonal to the bowl circumferential direction of the upper water supply space 52. ing.
  • the water supply surface 50 on the upper surface of the protruding portion 7 has an upstream end portion 701 inclined upward toward the downstream side (front side), and a downstream portion 702 of the upstream end portion 701 is horizontal. Alternatively, it is inclined downward toward the downstream side.
  • the upward inclination angle toward the downstream side of the upstream end portion 701 is 25 to 60 degrees
  • the downward inclination angle toward the downstream side of the portion 702 downstream of the upstream end portion 701 is 0 to 20 degrees. It is not limited to the said numerical value in particular.
  • an inner / downstream region 501 that is located on the inner side of the bowl diameter from the protruding portion 7 of the water supply surface 50 and reaches the water discharge port 44 and an inner connection region 431 that is located on the inner side of the bowl diameter of the shelf surface 43 and connected to the inner / downstream region 501.
  • the downward inclination angle of the inner downstream area 501 and the inner connection area 431 downwardly inclined toward the inside of the bowl diameter is 5 to 20 degrees, but is not particularly limited to the above numerical values.
  • the wash water is first discharged from the water supply outlet 60 in the direction of the arrow 61 as shown in FIGS.
  • FIG. 6 of the cleaning water discharged from the water supply outlet 60, most of the cleaning water that passes through the upper water supply space 52 jumps over the protruding portion 7 and the remaining part of the cleaning water It rides on the water supply surface 50 on the upper surface of the protrusion 7, passes through the protrusion 7, and is discharged from the water outlet 44 shown in FIG. 5 to the shelf surface 43.
  • the wash water that passes through the upper water supply space 52 can pass through the upper water supply space 52 with a small horizontal resistance 521 without the protruding portion 7 being positioned with a small flow resistance. It is possible to circulate around the shelf surface 43 without greatly reducing the flow velocity.
  • the wash water that passes through the portion of the lower feed water space 51 has a horizontal length 511 shorter than the horizontal length 521 of the upper feed water space 52 due to the protrusion of the protrusion 7. It passes through the lower water supply space 51 whose flow path resistance is larger than that of the upper water supply space 52. For this reason, the wash water that passes through the portion of the lower water supply space 51 is greatly scraped off when passing through the side of the protrusion 7, and is discharged from the water outlet 44 to the shelf surface 43, and then the shelf surface 43. Is less likely to circulate and easily flows down to the inside of the bowl diameter.
  • the protruding portion 7 is formed with a protruding length 700 that protrudes inward of the bowl diameter toward the upstream side. For this reason, the flow resistance of the lower water supply space 51 is continuously changed, and the loss of kinetic energy of the washing water due to a sudden change in flow resistance is suppressed.
  • the inner and downstream regions 501 of the water supply surface 50 and the inner connection region 431 of the shelf surface 43 are inclined downward toward the inside of the bowl diameter as indicated by an arrow 12. For this reason, in the portion immediately downstream of the water discharge port 44, the cleaning water discharged from the water discharge port 44 to the shelf surface 43 becomes easier to flow down to the inside of the bowl diameter.
  • the flush toilet 1 according to the second embodiment will be described with reference to FIGS.
  • the flush toilet 1 of 2nd embodiment is the same as the flush toilet 1 of 1st embodiment in most. For this reason, about the description which overlaps with 1st embodiment, the same code
  • the protruding portion 7 of the second embodiment is located over the entire length of the water supply space 5 in the inner and outer directions of the bowl diameter, and the water supply surface 50 that is the upper surface thereof has a main inclined surface 71 that inclines downward toward the inside of the bowl diameter.
  • the horizontal length 511 in the cross section orthogonal to the bowl circumferential direction of the lower water supply space 51 is formed shorter than the horizontal length 521 in the cross section orthogonal to the bowl circumferential direction of the upper water supply space 52. Is the same as in the first embodiment.
  • the main inclined surface 71 has a lower main inclined surface 72 located on the inner side of the bowl diameter, and an upper main inclined surface 73 located on the outer side of the bowl diameter from the lower main inclined surface 72.
  • the downward inclination angle 731 that inclines down to the inside of the bowl diameter of the upper main inclined surface 73 is smaller than the down inclination angle 721 that inclines to the inside of the bowl diameter of the lower main inclined surface 72.
  • the downward inclination angle 731 of the upper main inclined surface 73 is 25 to 30 degrees in the second embodiment, but is not particularly limited to the above numerical value.
  • the downward inclination angle 721 of the lower main inclined surface 72 is 50 to 60 degrees in the second embodiment, but is not particularly limited to the above numerical value. In other words, the downward inclination angle of the main inclined surface 71 inclined downward to the inside of the bowl diameter is 25 to 60 degrees, but is not particularly limited to the above numerical value.
  • the upper main inclined surface 73 is inclined downward toward the downstream side of the bowl circumferential direction (see arrow 732), and the inclination angle with respect to the horizontal direction is 5 to 20 degrees in the second embodiment.
  • it is not particularly limited to the above numerical values.
  • the upper main inclined surface 73 is formed such that the length 733 in the inner and outer directions of the bowl diameter becomes shorter toward the upstream side.
  • the lower main inclined surface 72 and the upper main inclined surface 73 are continuous by a smooth curve in the cross section.
  • the shelf surface 43 is positioned outside the bowl diameter and connected to the upper main inclined surface 73, and the shelf surface 43 protrudes upward and the upper surface of the shelf surface 450 forms the shelf surface 43.
  • the outer protrusion 45 is formed.
  • the outer shelf surface 450 is inclined downward toward the downstream side in the bowl circumferential direction (see arrow 451), and the inclination angle with respect to the horizontal direction is 5 to 20 degrees in the second embodiment. It is not limited.
  • the outer shelf surface 450 is continuous with the upper main inclined surface 73, and the outer shelf surface 450 is also inclined downward toward the inside of the bowl diameter (see arrow 452) in the same manner as the upper main inclined surface 73.
  • the inclination angle with respect to is 25 to 30 degrees, but is not particularly limited to the above numerical values.
  • the shelf surface 43 is located on the inner diameter side of the bowl and is connected to the inner connecting region connected to the lower main inclined surface 72.
  • the inner projection 46 protrudes upward and the upper surface thereof becomes the inner shelf surface 460 constituting the shelf surface 43.
  • Have The inner shelf surface 460 is inclined downward toward the inside of the bowl diameter (see arrow 461), and the inclination angle with respect to the horizontal direction is 40 to 60 degrees in the second embodiment, but is not particularly limited to the above numerical values.
  • the inner shelf surface 460 is continuous with the outer shelf surface 450 in the inner and outer directions of the bowl diameter, and is continuous with the lower main inclined surface 72 in the bowl circumferential direction.
  • the inner shelf surface 460 is inclined downward toward the downstream side of the bowl circumferential direction (see arrow 462), and the inclination angle with respect to the horizontal direction is 5 to 20 degrees in the second embodiment. It is not limited.
  • the shelf portion 4 may have either a ring shape in plan view or a C shape in plan view, but is formed in a ring shape in plan view in the second embodiment. Therefore, the wash water discharged from the water discharge port 44 to the shelf surface 43 circulates around the shelf surface 43 while being guided by the upper wall surface 23 and reaches the inside of the bowl diameter of the covering wall portion 42. Further, when the washing water flows downstream from the covering wall portion 42, it moves to the outside of the bowl diameter by centrifugal force and tries to enter a portion immediately downstream of the water discharge port 44. When the circulating wash water enters the portion immediately downstream of the spout 44, it collides with the wash water just discharged from the spout 44 and jumps to the toilet seat side.
  • the guide portion 8 is configured integrally with the inner protrusion 46 so that the configuration can be simplified.
  • the inner protrusion 46, the outer protrusion 45, and the protrusion 7 which have the guide part 8 integrally are comprised integrally, and it is a still simpler structure.
  • the guide portion 8 has a guide surface 80 positioned on the inner side of the bowl diameter toward the downstream side.
  • the upper surface of the guide surface 80 is inclined downward toward the inside of the bowl diameter, and the inclination angle with respect to the horizontal direction is 40 to 60 degrees, but is not particularly limited to the above numerical values.
  • the wash water is first discharged from the water supply outlet 60 in the direction of the arrow 61 as shown in FIGS.
  • most of the wash water discharged from the feed water outlet 60 that passes through the upper water supply space 52 jumps over the protruding portion 7 and the remaining water.
  • a part rides on the water supply surface 50 of the upper surface of the protrusion part 7, passes through the protrusion part 7, and is discharged to the shelf surface 43 from the water discharge port 44 shown in FIG. For this reason, as shown in FIG.
  • the wash water that passes through the portion of the upper water supply space 52 may pass through the upper water supply space 52 with a small horizontal resistance 521 without the protruding portion 7 being positioned with a small flow path resistance. It is possible to circulate around the shelf surface 43 without greatly reducing the flow velocity.
  • the cleaning water passing through the lower water supply space 51 has a horizontal length 511 shorter than the horizontal length 521 due to the protrusion of the protrusion 7, and is higher than the upper water supply space 52. It passes through the lower water supply space 51 having a large flow path resistance. For this reason, the wash water that passes through the portion of the lower water supply space 51 is greatly scraped off when passing through the side of the protrusion 7, and is discharged from the water outlet 44 to the shelf surface 43, and then the shelf surface 43. Is less likely to circulate and easily flows down to the inside of the bowl diameter.
  • the protruding portion 7 has a lower main inclined surface 72 and an upper main inclined surface 73, and the downward inclination angle 731 of the upper main inclined surface 73 is formed smaller than the downward inclination angle 721 of the lower main inclined surface 72. .
  • a part of the wash water that passes through the upper water supply space 52 rides on the water supply surface 50 on the upper surface of the projecting portion 7, and at this time, the wash water that flows downstream on the upper main inclined surface 73 is It does not receive a large force toward the inside of the bowl diameter. Accordingly, the cleaning water that has flowed from the upper main inclined surface 73 to the shelf surface 43 can easily circulate around the shelf surface 43.
  • an outer protrusion 45 having an outer shelf surface 450 connected to the upper main inclined surface 73 is provided, and the outer shelf surface 450 is inclined downward toward the downstream side in the circumferential direction of the bowl. It is suppressed that the washing water suddenly descends (falls) to the shelf surface 43 and the kinetic energy of the washing water is lost.
  • an inner protrusion 46 having an inner shelf surface 460 connected to the lower main inclined surface 72 is provided, and the inner shelf surface 460 is inclined downward toward the inside of the bowl diameter. In the portion, the cleaning water discharged from the water discharge port 44 to the shelf surface 43 is more likely to flow down to the inside of the bowl diameter.
  • the upper main inclined surface 73 is inclined downward toward the downstream side in the circumferential direction of the bowl, and has a length 733 in the inner and outer directions of the bowl diameter that becomes shorter toward the upstream side. For this reason, since the flow path resistance on the upper main inclined surface 73 of the lower water supply space 51 changes continuously, it is suppressed that the kinetic energy of washing water is largely lost due to a sudden change in the flow path resistance.
  • the lower main inclined surface 72 and the upper main inclined surface 73 are continuous by a smooth curve in the cross section. For this reason, since the flow path resistance in the part corresponding to the lower main inclined surface 72 and the upper main inclined surface 73 of the lower water supply space 51 continuously changes, the movement of the washing water due to the rapid change of the flow path resistance Energy loss is suppressed.
  • the traveling direction (see arrow 81) of the cleaning water that circulates around the shelf surface 43 and reaches the inner portion of the covering wall portion 42 on the inner side of the bowl diameter is The direction is changed (see arrow 82). For this reason, it is suppressed that it collides with the wash water immediately after being discharged from the water discharge port 44.
  • the flow resistance of the lower water supply space 51 is continuously changed in the vertical direction by the main inclined surface 71, and the loss of kinetic energy of the washing water due to the rapid change of the flow resistance in the vertical direction is suppressed. .
  • the flush toilet 1 of the first aspect includes a bowl surface 20 that opens upward to receive filth and washing water.
  • the bowl surface 20 has a shelf portion 4 and an upper wall surface 23.
  • the shelf 4 is formed in an annular shape or a C shape in a plan view along the upper edge opening 201 at a portion lower than the upper edge opening 201 of the bowl surface 20 by a predetermined height, and faces upward.
  • the upper wall surface 23 rises from the end of the upper surface 40 of the shelf 4 on the outer side of the bowl diameter, and the normal line faces the inner side of the bowl diameter.
  • the flush toilet 1 has a covering wall portion 42 protruding upward in a part of the upper surface 40 of the shelf portion 4 in the bowl circumferential direction.
  • a portion of the upper surface 40 of the shelf 4 on the downstream side of the water supply surface 50 is a shelf surface 43 that is not covered by the cover wall 42.
  • the end in the bowl circumferential direction which is the downstream end of the water supply space 5, becomes a spout 44 for discharging water to the shelf surface 43.
  • the upper wall surface 23 of the water supply space 5 has a protrusion 7 that protrudes inward of the bowl diameter and whose upper surface becomes the water supply surface 50.
  • the horizontal length 511 in the cross section orthogonal to the bowl circumferential direction of the lower water supply space 51 which is the lower region of the range where the projecting portion 7 is located in the vertical range of the water supply space 5, is the upper side of the lower water supply space 51 of the water supply space 5. Is formed shorter than the horizontal length 521 in the cross section perpendicular to the circumferential direction of the bowl of the upper water supply space 52.
  • the wash water that passes through the portion of the lower water supply space 51 is greatly scraped off when passing through the side of the protrusion 7, and is discharged from the spout 44 to the shelf surface 43. After that, it becomes easy to flow down inside the bowl diameter.
  • the second mode is realized by a combination with the first mode.
  • the protruding portion 7 is formed with a protruding length 700 that protrudes inward of the bowl diameter toward the upstream side.
  • the flow path resistance of the lower water supply space 51 continuously changes, it is possible to suppress a large loss of kinetic energy of the cleaning water due to a sudden change in the flow path resistance.
  • the third mode is realized by a combination with the first mode or the second mode.
  • the inner / downstream region 501 located inside the bowl diameter from the protruding portion 7 of the water supply surface 50 and reaching the water discharge port 44 and the inner / downstream region 501 located inside the bowl diameter of the shelf surface 43 are connected.
  • the inner connection region 431 is inclined downward toward the inside of the bowl diameter.
  • the cleaning water discharged from the water discharge port 44 to the shelf surface 43 is more likely to flow down to the inside of the bowl diameter.
  • the fourth aspect is realized by a combination with the first aspect.
  • the protrusion 7 has a main inclined surface 71 that is located over the entire length of the water supply space 5 in the inner and outer directions of the bowl diameter, and the upper surface of the water supply surface 50 is inclined downward toward the inside of the bowl diameter.
  • the flow resistance of the lower water supply space 51 is continuously changed in the vertical direction by the main inclined surface 71, and the kinetic energy of the washing water is caused by the flow resistance being rapidly changed in the vertical direction. Loss is suppressed.
  • the fifth aspect is realized by a combination with the fourth aspect.
  • the main inclined surface 71 has a lower main inclined surface 72 located on the inner side of the bowl diameter, and an upper main inclined surface 73 located on the outer side of the bowl diameter from the lower main inclined surface 72, and the upper main inclined surface.
  • the downward inclination angle 731 of the surface 73 is smaller than the downward inclination angle 721 of the lower main inclined surface 72.
  • the cleaning water flowing downstream on the upper main inclined surface 73 is not greatly subjected to the force directed toward the inside of the bowl diameter, and the cleaning water easily circulates on the shelf surface 43.
  • the sixth aspect is realized by a combination with the fifth aspect.
  • the shelf surface 43 is located on the outside of the bowl diameter and is connected to the upper main inclined surface 73 so as to protrude upward and the upper surface thereof becomes the outer shelf surface 450 constituting the shelf surface 43.
  • the outer shelf surface 450 has an outer protrusion 45 and is inclined downward toward the downstream side in the circumferential direction of the bowl.
  • the cleaning water is prevented from falling from the upper main inclined surface 73 to the shelf surface 43 and losing the kinetic energy of the cleaning water.
  • the seventh aspect is realized by a combination with the fifth aspect or the sixth aspect.
  • the upper main inclined surface 73 is inclined downward toward the downstream side in the bowl circumferential direction, and the length 733 in the bowl diameter inner and outer direction is formed shorter toward the upstream side.
  • the kinetic energy of the washing water is largely lost due to a sudden change in the flow path resistance. It is suppressed.
  • the eighth aspect is realized by a combination with any one of the fifth to seventh aspects.
  • the lower main inclined surface 72 and the upper main inclined surface 73 are continuous by a smooth curve in the cross section.
  • the flow resistance in the portion corresponding to the lower main inclined surface 72 and the upper main inclined surface 73 of the lower water supply space 51 continuously changes, the flow resistance changes rapidly. The loss of kinetic energy of washing water due to is suppressed.
  • the ninth aspect is realized by a combination with any of the fourth to eighth aspects.
  • the main inclined surface 71 has a lower main inclined surface 72 located on the inner side of the bowl diameter, and an upper main inclined surface 73 located on the outer side of the bowl diameter from the lower main inclined surface 72.
  • the shelf surface 43 has an inner protrusion 46 that protrudes upward and has an upper surface serving as an inner shelf surface 460 that constitutes the shelf surface 43 in an inner connection region 431 that is located inside the bowl diameter and is connected to the lower main inclined surface 72.
  • the inner shelf surface 460 is inclined downward toward the inside of the bowl diameter.
  • the inner shelf surface 460 is inclined downward toward the inside of the bowl diameter, the wash water discharged from the water outlet 44 to the shelf surface 43 is immediately downstream of the water outlet 44. It becomes easier to flow down inside the bowl diameter.
  • the tenth aspect is realized by a combination with any one of the first to ninth aspects.
  • the guide portion 8 that changes the traveling direction of the water that has been discharged from the water discharge port 44 and circulated around the shelf surface 43 to the inside of the bowl diameter on the portion on the inside of the bowl diameter from the covering wall portion 42 of the shelf 4.
  • the cleaning water that has circulated around the shelf surface 43 and reached the inner portion of the covering wall portion 42 in the bowl diameter is discharged from the water outlet 44 because the traveling direction is changed to the inner side of the bowl diameter. Collision with the wash water immediately after is suppressed.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)
PCT/JP2018/001420 2017-01-31 2018-01-18 水洗便器 WO2018142957A1 (ja)

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JP2017-015754 2017-01-31
JP2017-015753 2017-01-31
JP2017015754A JP6706800B2 (ja) 2017-01-31 2017-01-31 水洗便器
JP2017-015756 2017-01-31
JP2017015756A JP6796800B2 (ja) 2017-01-31 2017-01-31 水洗便器
JP2017-015755 2017-01-31
JP2017015755A JP6706801B2 (ja) 2017-01-31 2017-01-31 水洗便器
JP2017015753A JP6796799B2 (ja) 2017-01-31 2017-01-31 水洗便器

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004156309A (ja) * 2002-11-06 2004-06-03 Toto Ltd 水洗便器
JP2005213880A (ja) * 2004-01-29 2005-08-11 Toto Ltd 水洗便器
JP2008138419A (ja) * 2006-11-30 2008-06-19 Matsushita Electric Works Ltd 水洗便器
JP2013170396A (ja) * 2012-02-21 2013-09-02 Toto Ltd 水洗大便器
JP2015196959A (ja) * 2014-03-31 2015-11-09 Toto株式会社 水洗大便器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3381261B2 (ja) * 1996-10-15 2003-02-24 東陶機器株式会社 水洗便器
JP2007327223A (ja) * 2006-06-07 2007-12-20 Janis Ltd 洋風水洗便器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004156309A (ja) * 2002-11-06 2004-06-03 Toto Ltd 水洗便器
JP2005213880A (ja) * 2004-01-29 2005-08-11 Toto Ltd 水洗便器
JP2008138419A (ja) * 2006-11-30 2008-06-19 Matsushita Electric Works Ltd 水洗便器
JP2013170396A (ja) * 2012-02-21 2013-09-02 Toto Ltd 水洗大便器
JP2015196959A (ja) * 2014-03-31 2015-11-09 Toto株式会社 水洗大便器

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