JP2014047561A - Water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water closet capable of increasing the momentum of wash water flowing from a front side of a bowl part to an inlet of a drain trap part, and capable of improving dirt discharge performance even when an amount of wash water used for washing a toilet bowl is set at a smaller amount.SOLUTION: An inventive water closet 1 includes: a bowl part 4 provided with a dirt receiving surface 10 and a shelf part 12; a rim part 14 formed in an upper edge of the bowl part; and a standing wall part 20 formed on a rear side shelf part 12a of the bowl part or in a conduit in an upstream thereof and protruded upward. The standing wall part is formed such that wash water supplied from a wash water source and discharged from a central water discharge port 8 of a central conduit 6 at the back of the bowl part collides with the standing wall part, thereafter is branched into both sides disposed on left and right sides thereof, and flows to a front side of the bowl part via a lateral side shelf part 12b of the bowl part.

Description

  The present invention relates to a flush toilet, and more particularly, to a flush toilet in which a toilet body is washed with wash water supplied from a wash water source to discharge filth.

  Conventionally, as a flush toilet that flushes the toilet body with the wash water supplied from the wash water source and discharges filth, for example, as described in Patent Document 1, on the rear surface of the rim portion of the toilet body, One having a flat slit opening in the horizontal direction is known. In such flush toilets, a distribution unit that distributes the wash water to the left and right is provided in the upstream water conduit near the slit opening, and the wash water supplied from the wash water source into the water conduit is distributed in the distribution unit. The water is distributed to the left and right by passing through, and the washing water is discharged from the slit opening to the bowl portion. The wash water distributed to the left and right swirls on the shelf of the bowl portion to form a main flow from the front side of the rim portion toward the trap inlet, and the main flow pushes filth into the trap together with the stored water. It comes to discharge.

JP 2009-97172 A

However, in the conventional flush toilet described above, some of the washing water discharged from the slit opening may flow directly to the rear surface of the bowl portion without sufficiently turning to the front side of the bowl portion. For this reason, there is a problem that the flow of cleaning water flowing from the front side of the bowl portion to the inlet of the drain trap portion becomes weak, resulting in poor cleaning. Therefore, how to increase the amount of washing water swirled to the front side of the bowl part and how to improve the flow of washing water flowing from the front side of the bowl part to the inlet of the drain trap part becomes a serious issue. ing.
Moreover, in the conventional flush toilet, the slit opening formed in the rear surface of the rim portion of the toilet body is formed in the lower portion of the rear surface of the rim portion of the toilet body, but above the slit opening. This part is located above the shelf where the wash water swirls, so even if the amount of wash water swung to the front side of the bowl part is increased, the part that is not washed especially on the rear surface of the bowl part (not There is also a problem that a large amount of the cleaning section is left behind.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and can increase the momentum of washing water flowing from the front side of the bowl portion to the inlet of the drain trap portion, and is used for toilet cleaning. An object of the present invention is to provide a flush toilet that can improve the waste discharge performance even when the amount of washing water to be set is small.

In order to achieve the above-described object, the present invention is a flush toilet that cleans a toilet body with washing water supplied from a washing water source and discharges waste, and a waste receiving surface that receives the waste, and the waste receiving A bowl portion having a shelf portion formed on the upper edge of the surface, a rim portion formed on the upper edge of the bowl portion for discharging cleaning water into the bowl portion, and formed below the bowl portion. A water trap, a drain trap that is formed to extend rearward from an inlet connected to the lower end of the water reservoir, and discharges filth, and a shelf on the rear side of the bowl or a water guide channel upstream thereof. A standing wall portion that is formed inside and protrudes upward, and the standing wall portion is supplied with the washing water source, and the washing water discharged from the substantially central conduit at the rear of the bowl portion is The bows placed on the left and right after colliding with the standing wall Diverted laterally side parts, is characterized in that it is formed to flow to the front of the bowl portion via the ledge of the lateral side of the bowl portion.
In the present invention configured as described above, the cleaning water supplied from the cleaning water source and discharged from the substantially central water conduit at the rear of the bowl portion collides with the standing wall portion, and then the bowl portion disposed on the left and right sides. The flow is diverted to the side and flows to the front side of the bowl portion via the shelf on the side of the bowl portion. At this time, since the washing water collides with the standing wall portion and is once received, the amount of washing water flowing to the front side of the bowl portion via the shelf portion on the side of the bowl portion can be increased. Therefore, it is possible to push in the filth by increasing the momentum of the washing water flowing from the front side of the bowl part to the entrance of the drain trap part, so even when the amount of washing water used for toilet cleaning is set low, the filth discharge performance is improved. Can be made.

In the present invention, preferably, the rim portion is formed such that a rear surface thereof covers a part of the standing wall portion via a predetermined gap.
In the present invention configured as described above, the cleaning water supplied from the cleaning water source is discharged from the substantially central water conduit at the rear of the bowl portion toward the vertical wall portion, and a part of the cleaning water gets over the vertical wall portion. In this case, the washing water that has passed over can flow into the rear side of the filth receiving surface of the bowl portion through a predetermined gap between the rear surface of the rim portion and the standing wall portion. Therefore, it is possible to satisfactorily clean the rear region in the bowl portion that is difficult to wash with only the wash water that flows to the front side of the bowl portion via the shelf on the side of the bowl portion after colliding with the standing wall portion. it can. In addition, since the rear surface of the rim portion is formed so as to cover a part of the standing wall portion through a predetermined gap, the area of the rear surface of the rim portion that is a non-cleaning portion can be reduced. The cleaning property of the toilet body can be improved.

In this invention, Preferably, the said standing wall part is formed in the curved shape so that the circumferential direction of the said shelf part may be met in planar view.
In the present invention configured as described above, the standing wall portion is formed in a curved shape so as to be along the circumferential direction of the shelf portion in a plan view, so that the cleaning water discharged and received by the standing wall portion is received by the standing wall portion. Can be smoothly guided to the front side of the bowl part along the water flow path, so that the amount of washing water flowing from the water guide channel behind the bowl part to the front side of the bowl part via the side shelf part of the bowl part is increased. Can do. Therefore, it is possible to push in the filth by increasing the momentum of the washing water flowing from the front side of the bowl part to the entrance of the drain trap part, so even when the amount of washing water used for toilet cleaning is set low, the filth discharge performance is improved. Can be made.

In the present invention, preferably, the standing wall portion is formed so that the center portion thereof is the highest in a front view, and is formed so as to become lower toward the side end portion of the standing wall portion.
In the present invention configured as described above, the central portion of the standing wall portion where the washing water supplied from the washing water source and discharged from the substantially central water conduit behind the bowl portion collides most is among the standing wall portions. The amount of washing water that flows from the shelf on the side of the bowl portion to the front side of the bowl portion by colliding with the central portion of the standing wall portion by forming it higher and lowering toward the side edge of the standing wall portion In addition, it is possible to make the amount of washing water flowing over the standing wall portion and flowing into the rear side of the filth receiving surface of the bowl portion uniform. Therefore, even when the amount of cleaning water used for toilet cleaning is set to be small, it is possible to satisfactorily clean the entire dirt receiving surface of the bowl portion.

In this invention, Preferably, the said standing wall part is formed symmetrically in front view.
In the present invention configured as described above, the cleaning water supplied from the cleaning water source and discharged from the substantially central water conduit behind the bowl portion collides with the central portion of the standing wall portion, and the side of the bowl portion is The amount of washing water flowing from the shelf part to the front side of the bowl part and the amount of washing water flowing over the standing wall part to the rear side of the filth receiving surface of the bowl part can be made uniform. Therefore, since it is possible to push in the filth by increasing the momentum of the washing water flowing from the front side of the bowl part and the rear side of the filth receiving surface to the entrance of the drain trap part, when the amount of washing water used for toilet cleaning is set small In addition, the waste discharge performance can be improved.

In the present invention, preferably, the bowl portion further includes a non-shelf region in which the shelf is not formed on the front side thereof, or an inclined shelf region that is most inclined among the shelf, and the filth. A recess formed to extend in the front-rear direction in a central region on the front side of the receiving surface.
In the present invention configured as described above, the wash water flowing to the front side of the bowl part via the shelf part on the side of the bowl part after colliding with the standing wall part is the non-shelf part region of the bowl part or The slanted shelf region and the recess in the central region on the front side of the bowl portion's filth receiving surface can flow from the front side of the bowl portion to the inlet of the drain trap portion to increase the momentum of the washing water and push in the filth. Furthermore, the flow of the washing water that has merged on the front side of the bowl portion via the shelf portions on the left and right sides of the bowl portion is disturbed by the collision at the time of merging, but is caused by the recess in the central region of the bowl portion. The turbulence can be adjusted to flow from the front side of the bowl part to the inlet of the drain trap part. Therefore, even when the amount of washing water used for toilet cleaning is set to be small, the waste discharging performance can be improved.

Further, the present invention is a flush toilet that cleans a toilet bowl body with washing water supplied from a washing water source and discharges filth, and is formed on a filth receiving surface that receives the filth and an upper edge of the filth receiving surface. A bowl part provided with a ledge part, a rim part formed on the upper edge of the bowl part for discharging cleaning water into the bowl part, a water storage part formed below the bowl part, A drain trap part that is formed to extend rearward from an inlet connected to the lower end of the water storage part and discharges filth, and is formed in a shelf on the rear side of the bowl part or in a water conduit upstream of the bowl part. And the rim portion is formed such that a rear surface of the rim portion covers a part of the standing wall portion through a predetermined gap.
In the present invention configured as described above, when the cleaning water supplied from the cleaning water source is spouted from the rim portion to the bowl portion, the cleaning water over the standing wall portion has a predetermined amount of the rear surface of the rim portion and the standing wall portion. Since it can flow from the gap to the rear side in the bowl portion, the rear side in the bowl portion can be washed. In addition, since the rear surface of the rim portion is formed so as to cover a part of the standing wall portion through a predetermined gap, the area of the rear surface of the rim portion that is a non-cleaning portion can be reduced. The cleaning property of the toilet body can be improved.

  According to the flush toilet of the present invention, the momentum of washing water flowing from the front side of the bowl portion to the inlet of the drain trap portion can be increased, and even when the amount of washing water used for toilet flushing is set to a small amount, Performance can be improved.

It is a top view of the flush toilet according to one embodiment of the present invention. It is sectional drawing seen along the II-II line of FIG. It is a disassembled perspective view which shows the state which cut off the rear side part of the rim | limb part, and the upper surface of a central water conduit in the flush toilet by one Embodiment of this invention. It is sectional drawing seen along the IV-IV line of FIG. It is front sectional drawing which shows the state which cut off the rear side part of the rim | limb part in the flush toilet according to one Embodiment of this invention shown in FIG. It is the elements on larger scale which expanded the part of the standing wall part of the flush toilet according to one Embodiment of this invention shown in FIG. It is sectional drawing seen along the VII-VII line of FIG. It is the figure explaining the flow of the washing water at the time of toilet bowl washing | cleaning in the flush toilet bowl by one Embodiment of this invention.

Hereinafter, a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a plan view of a flush toilet according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. In FIG. 2, the flow of cleaning water is indicated by arrows.
As shown in FIGS. 1 and 2, a flush toilet 1 according to an embodiment of the present invention is a so-called flush-type flush toilet, in which filth is washed away by flowing water due to a drop of water in a bowl portion. The toilet body 2 is made of the like. In addition, a gravity water supply type storage tank (not shown) is provided above the rear part of the toilet body 2 as a cleaning water source for storing cleaning water used for toilet cleaning and supplying the toilet water to the toilet body 2.
The cleaning water source for supplying cleaning water to the toilet body 2 is not limited to a tank-type tank such as the gravity water supply storage tank (not shown) shown in the present embodiment. A direct water supply type that is directly used, a flush valve type, or a type that supplies cleaning water using the supplementary pressure of a pump may be used. Moreover, in the flush toilet 1 of this embodiment, although the form of what is called a floor-standing flush toilet which the bottom part of the toilet bowl body 2 was installed in the floor is demonstrated as an example, it is not restricted to such a form Instead, it may be in the form of a so-called wall-mounted flush toilet where the back side of the toilet body is installed on the rear wall or the like.

  Next, a bowl portion 4 is formed at the front upper portion of the toilet body 2. On the other hand, a central water conduit 6 is formed in the substantially horizontal central portion of the rear upper part of the toilet body 2 so as to extend in the front-rear direction, and the washing supplied to the central water conduit 6 from a water storage tank (not shown). Water is introduced toward the central water outlet 8 located at the downstream end of the central water conduit 6 (the front end of the central water conduit 6).

Next, the bowl part 4 is provided with the filth receiving surface 10 which receives filth, and the shelf part 12 formed in the upper edge of this filth receiving surface 10, and in the upper edge of the bowl part 4, it extends over the perimeter. A rim portion 14 is formed.
Further, below the bowl portion 4 is formed a water storage portion 16 in which a predetermined amount of water stored in the initial water level is indicated by W0. Furthermore, an inlet 18a of a drain trap pipe 18 is connected to the lower end of the water reservoir 16, the drain trap pipe 18 extends rearward from the inlet 18a, and its downstream end is a drain socket. It is connected to a discharge pipe (not shown) under the floor via (not shown).

Further, as shown in FIGS. 1 and 2, a standing wall portion 20 (details will be described later) protruding upward is formed on the shelf portion 12 a on the rear side of the bowl portion 4 of the toilet body 2.
As shown in FIGS. 1 and 2, a rear rim conduit 22 that communicates with the central conduit 6 and branches from the central outlet 8 to the left and right sides is formed on the rear side of the standing wall 20. . The cleaning water supplied from a water storage tank (not shown) as a cleaning water source and discharged from the central water conduit 6 behind the bowl portion 4 collides with the vicinity of the central portion of the back surface 20a of the standing wall portion 20 and then left and right. The flow is divided into the respective rear rim conduits 22 arranged so as to be able to turn to the front side of the bowl part 4 via the shelf part 12 b on the side of the bowl part 4.

Next, the details of the bowl part, the rim part, and the standing wall part of the flush toilet according to this embodiment will be described with reference to FIGS.
FIG. 3 is an exploded perspective view showing a state in which the rear side portion of the rim portion and the upper surface of the central water conduit are cut off in the flush toilet according to the embodiment of the present invention. 4 is a cross-sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a rear side portion of the rim portion in the flush toilet according to the embodiment of the present invention shown in FIG. It is front sectional drawing which shows the state. Furthermore, FIG. 6 is a partially enlarged cross-sectional view in which the portion of the standing wall portion of the flush toilet according to the embodiment of the present invention shown in FIG. 2 is enlarged. In FIG. 6, the flow of the cleaning water over the standing wall is indicated by an arrow.

  First, as shown in FIG.1 and FIG.3, the standing wall part 20 is formed in the curved shape so that the circumferential direction of the shelf part 12a of the back side may be met in planar view. Thereby, after the wash water spouted from the central water outlet 8 of the central water conduit 6 behind the bowl part 4 collides with the vicinity of the center part of the back surface 20a of the standing wall part 20 and is once received by the standing wall part 20, The inside of the rear rim water guide path 22 is smoothly guided along the back surface 20a of the upright wall portion 20 from both sides behind the bowl portion 4 to the front side.

  Next, as shown in FIGS. 3 and 5, when the rear side portion 14 a of the rim portion 14 is cut off, the standing wall portion 20 is formed so that the upper end 20 b of the center portion C is the highest in the front view. It is formed so as to be gradually lowered toward the side end portions 20c located on both sides of the standing wall portion 20, and is formed symmetrically about the central portion C. Accordingly, the wash water discharged from the central water outlet 8 of the central water conduit 6 behind the bowl portion 4 and colliding with the back surface 20a of the standing wall portion 20 from the rear rim conduit 22 to the side shelf of the bowl portion 4 is stored. The amount of washing water for turning to the front side of the bowl part 4 via the part 12b can be secured. Further, a part of the cleaning water discharged from the central water outlet 8 of the central water conduit 6 toward the standing wall portion 20 gets over the standing wall portion 20 and flows into the rear side of the filth receiving surface 10 of the bowl portion 4 uniformly. Can be made.

Next, as shown in FIGS. 4 and 6, the rear side portion 14a of the rim portion 14 is over so that the upper end 20b of the standing wall portion 20 and the upper portion of the front surface 20d are partially covered with a predetermined gap. A rim hanging wall portion 14b formed in a hung shape is provided. That is, the gap formed between the rim hanging wall portion 14 b and the standing wall portion 20 substantially forms a slit-like opening (slit opening 24) on the rear side of the rim portion 14. Thereby, when a part of the washing water discharged from the central water outlet 8 of the central water conduit 6 toward the standing wall portion 20 gets over the standing wall portion 20, the washing water that has passed over the rear side portion of the rim portion 14. 14a passes through the slit opening 24 between the rim hanging wall portion 14b of the rim 14a and the standing wall portion 20 and can flow into the rear side of the filth receiving surface 10 of the bowl portion 4, so that the rear side in the bowl portion 4 is washed. Be able to.
Further, since the rim hanging wall portion 14b is formed so as to cover a part of the standing wall portion 20 through a predetermined gap (slit opening 24), the surface 14c of the rim hanging wall portion 14b which is a non-cleaning portion is formed. The area S can be reduced, and the cleaning property of the toilet body 2 can be improved.

Incidentally, the maximum height dimension h of the standing wall portion 20 shown in FIG. 6 is preferably set to 30 mm to 50 mm, and most preferably set to 35 mm to 45 mm.
Moreover, it is preferable to set to 5 mm-15 mm about the clearance gap d1 (refer FIG. 6) of the perpendicular direction formed between the upper end 20b of the standing wall part 20 and the upper surface 22b in the back side rim water guide path 22. Most preferably, it is set to 8 mm to 12 mm.
Further, the gap interval d2 (see FIG. 6) of the slit opening 24 is preferably set to 5 mm to 15 mm, and most preferably set to 8 mm to 12 mm.
Further, as shown in FIG. 6, the rim hanging wall portion 14 b of the standing wall portion 20 along the flow path formed in a section (overlap section) covering the upper portion of the front surface 20 d from the upper end 20 b of the standing wall section 20. The length dimension l from the vicinity of the upper end 20b to the vicinity of the lower end of the rim hanging wall portion 14b is preferably set to 10 mm to 20 mm, and most preferably set to 13 mm to 17 mm.

  Next, as shown in FIGS. 1 to 5, rim water discharge ports 26 of the rear rim conduit 22 are formed in the vicinity of the side end portions 20 c on both sides of the standing wall portion 20. The wash water discharged from each of the rim water discharge ports 26 flows to the front side along the shelf portion 12b on the side of the bowl portion 4 so that it can turn to the front side of the bowl portion 4. It has become.

  FIG. 7 is a sectional view taken along line VII-VII in FIG. As shown in FIGS. 1, 2, and 7, the bowl portion 4 includes a non-shelf region A <b> 1 in which no shelf 12 is formed in a region on the front side of the filth receiving surface 10, and this non-shelf region A <b> 1. More specifically, the sewage receiving surface 10 on the rear side of the sewage receiving part 16 will be described in detail. Is formed. As a result, the washing water discharged from each of the rim spouts 26 and swirled to the non-shelf region A1 on the front side of the bowl part 4 via the shelf part 12b on the side of the bowl part 4 becomes the filth receiving surface. 10 can flow into the recess 28 in the central area A2 on the front side, and can increase the momentum of the cleaning water flowing from the recess 28 to the inlet 18a of the drain trap pipe 18 through the reservoir 16 to push in the filth. It is like that. Furthermore, the flow of the washing water that has merged on the front side of the bowl portion 4 via the shelf portions 12b on the left and right sides of the bowl portion 4 is disturbed by the collision at the time of merging. The recess 28 in the region A can adjust the turbulence from the front side of the bowl portion 4 to the flow flowing to the inlet 18 a of the drain trap portion 18.

Next, the operation of the flush toilet according to one embodiment of the present invention will be described with reference to FIGS.
FIG. 8 is a diagram illustrating the flow of washing water during toilet flushing in a flush toilet according to an embodiment of the present invention. In FIG. 8, the flow of cleaning water is indicated by arrows.
As shown in FIG. 8, when flush water is supplied from the flush water source into the central conduit 6 of the toilet body 2 of the flush toilet 1 and toilet flushing is started, the flush water in the central conduit 6 is The water is discharged forward from the water outlet 8 and collides with the vicinity of the central portion of the back surface 20a of the standing wall 20 facing the central water outlet 8 (see flow f1 in FIG. 8).
After this collision, the wash water that cannot get over the standing wall portion 20 flows in from the inlets 22a of the rear rim conduit 22 disposed on the left and right sides of the central spout 8 and diverts to each of the rear rim conduits 22. (Refer to flow f2 in FIG. 8).
Then, the wash water that has flowed downstream along the rear rim conduit 22 is discharged from the rim spout 26 to the front side shelf 12b in front of the bowl, along the side ledge 12b. It turns to the non-shelf part area | region A1 of the front side of the part 4 (refer the flow f3 of FIG. 8).

  Next, in the non-shelf region A1 on the front side of the bowl part 4 (near the front end in the bowl part 4), the flow swirling the side shelf parts 12b on both sides joins, and the dirt receiving surface 10 It flows into the concave portion 28 of the central area A2 on the front side. The cleaning water finally flows vigorously from the recessed portion 28 through the rear water storage portion 16 to the inlet 18a of the drain trap pipe 18 and discharges the filth in the bowl portion 4 (flow f4 in FIG. 8). reference).

  On the other hand, as shown in FIGS. 6 and 8, of the cleaning water discharged from the central water discharge port 8 of the central water conduit 6 toward the standing wall portion 20, the cleaning water that has passed over the standing wall portion 20 is in the rim portion 14. It flows into the rear side of the filth receiving surface 10 of the bowl part 4 from a predetermined gap (slit opening 24) between the rim hanging wall part 14b and the standing wall part 20 of the rear side part 14a, and the rear side in the bowl part 4 is washed ( (See the flow f5 in FIGS. 6 and 8).

  According to the flush toilet 1 according to the embodiment of the present invention described above, the wash water supplied from the wash water source and discharged from the central water conduit 6 of the bowl portion 4 collides with the back surface 20a of the standing wall portion 20, and temporarily In the state where it is received by the standing wall portion 20 and the amount of washing water is increased, it is diverted to the inlet 22a of the rear rim conduit 22 of the bowl portion 4 arranged on the left and right, flows in the rear rim conduit 22 and flows into the rim. The water can be swung from the water port 26 to the front side of the bowl portion 4 via the side shelf 12 b of the bowl portion 4. Therefore, since the amount of washing water swirled forward of the bowl portion 4 can be increased, it is possible to increase the momentum of the washing water flowing from the front side of the bowl portion 4 to the inlet 18a of the drain trap pipe 18 and push in filth. . As a result, even when the amount of washing water used for toilet cleaning is set to be small, the waste discharging performance can be improved.

  Moreover, according to the flush toilet 1 according to the present embodiment, the wash water supplied from the wash water source is discharged from the central water outlet 8 of the central water conduit 6 at the rear of the bowl portion 4 toward the standing wall portion 20, and this washing is performed. When a part of the water climbs over the standing wall portion 20, the washing water that has passed over the bowl comes from a predetermined gap (slit opening 24) between the rim hanging wall portion 14 b and the standing wall portion 20 of the rear side portion 14 a of the rim portion 14. It can flow into the rear side of the filth receiving surface 10 of the part 4. Therefore, the rear region in the bowl portion 4 that is difficult to wash with only the wash water flowing to the front side of the bowl portion 4 via the side shelf 12b of the bowl portion 4 after colliding with the standing wall portion 20 is good. Can be washed. Further, since the rim hanging wall portion 14b is formed so as to cover a part of the standing wall portion 20 through a predetermined gap (slit opening 24), the surface 14c of the rim hanging wall portion 14b which is a non-cleaning portion is formed. The area S can be reduced, and the cleanability of the toilet body 2 can be improved.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the standing wall portion 20 is formed in a curved shape so as to follow the circumferential direction of the shelf portion 12a on the rear side in a plan view. The wash water discharged from the central water outlet 8 of the rear central water conduit 6 collides with the vicinity of the central portion of the rear surface 20a of the standing wall 20 and is temporarily received by the standing wall 20, and then in the rear rim conduit 22. Is smoothly guided to the front side from both the back side of the bowl part 4 along the back surface 20a of the standing wall part 20, so that the side side shelf part 12b of the bowl part 4 is moved from the rear side water conduit 22 at the back side of the bowl part 4. It is possible to increase the amount of washing water that turns to the front side of the bowl portion 4 via the route. Therefore, since it is possible to push in the filth by increasing the momentum of the washing water flowing from the front side of the bowl portion 4 to the inlet 18a of the drain trap pipe 18, even when the amount of washing water used for toilet flushing is set small, the filth The discharge performance can be improved.

  Moreover, according to the flush toilet 1 by this embodiment, the standing wall part 20 is formed so that the upper end 20b of the center part C may become the highest in front view, and the side edge part located in the both sides of the standing wall part 20 Since it is formed so as to be gradually lowered toward 20c and symmetrically formed, water is discharged from the central water outlet 8 of the central water conduit 6 behind the bowl portion 4 and collides with the back surface 20a of the standing wall portion 20 It is possible to secure an amount of cleaning water for the cleaning water to turn from the rear side rim conduit 22 to the front side of the bowl part 4 via the shelf part 12 b on the side of the bowl part 4. Further, a part of the cleaning water discharged from the central water outlet 8 of the central water conduit 6 toward the standing wall portion 20 gets over the standing wall portion 20 and flows into the rear side of the filth receiving surface 10 of the bowl portion 4 uniformly. Can be. As a result, even when the amount of washing water used for toilet cleaning is set to be small, the entire filth receiving surface 10 of the bowl portion 4 can be washed well, and the filth discharge performance can be improved.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the flow swirling each of the side shelves 12b on both sides merges in the non-shelf region A1 on the front side of the bowl portion 4, and the waste receiving surface 10 When it flows into the recess 28 in the central area A2 on the front side, it can flow into the inlet 18a of the drain trap pipe 18 through the water reservoir 16 at the back of the recess 28, and the filth can be pushed in. Furthermore, the flow of the washing water that has merged on the front side of the bowl portion 4 via the shelf portions 12b on the left and right sides of the bowl portion 4 is disturbed by the collision at the time of merging. Due to the recess 28 in the region A, the disturbance can be adjusted to flow from the front side of the bowl portion 4 to the inlet 18 a of the drain trap portion 18. Therefore, even when the amount of washing water used for toilet cleaning is set to be small, the waste discharging performance can be improved.

  In the flush toilet according to the embodiment of the present invention described above, the bowl portion 4 includes a non-shelf region A1 in which the shelf portion 12 is not formed in the region on the front side of the filth receiving surface 10. Although it demonstrated, it is not restricted to such a form, Instead of non-shelf part area | region A1, the area | region (inclined shelf) in which the shelf part inclined most downwardly from front to back was formed among the perimeters of a shelf part. (Part area) may be provided in the area on the front side of the filth receiving surface 10. Thereby, in the inclined shelf part area | region of the front side of the bowl part 4, the flow which swirled each of the side shelf parts 12b of both sides merges, and in the recessed part 28 of the center area | region A2 of the front side of the filth receiving surface 10 When it flows, it can flow vigorously into the inlet 18a of the drain trap pipe 18 through the water reservoir 16 behind the recess 28. Therefore, even when the amount of washing water used for toilet cleaning is set to be small, the waste discharging performance can be improved.

  Further, in the flush toilet 1 according to the present embodiment, the wash-out flush toilet has been described as an example. However, the filth in the bowl portion is sucked using the siphon action and discharged from the drain trap pipe to the outside at once. The so-called siphon type flush toilet may be used.

  Furthermore, in the flush toilet 1 according to the present embodiment, the mode in which only the rim water discharge by the rim water discharge port 26 and the slit opening 24 is described, but the present invention is not limited to such a mode, and the Zet water channel and the Zet water discharge port. It is also possible to use a combination of the Zet water discharge and the rim water discharge described above.

  Furthermore, in the flush toilet 1 according to the present embodiment, the form in which the standing wall part 20 is formed on the shelf part 12a on the rear side of the bowl part 4 of the toilet body 2 is not limited to such a form. You may provide a standing wall part in the water conduit located upstream from the shelf part of the back side of a bowl part. Thereby, the surface area of the rim drooping wall part of the back side part of the rim | limb part which is a non-washing part can be made small, and the cleaning property of a toilet bowl main body can be improved.

  Moreover, in the flush toilet 1 by this embodiment, the standing wall part 20 is formed so that the upper end 20b of the center part C may become the highest in front view, and the side edge part 20c located in the both sides of the standing wall part 20 However, the present invention is not limited to such a form, and the height of the standing wall part is not limited to such a form. May be set to be asymmetrical with respect to the central portion. As a result, the position where the wash water spouted from the rim spout is swirled in the bowl portion and merged can be changed to a left-right asymmetric position in the bowl portion, and the swivel force due to the rim spout and the pushing force due to the jet spout By using together, it is possible to effectively discharge floating filth.

  Furthermore, in the flush toilet 1 according to the present embodiment, the wash water supplied from the wash water source to the central water conduit 6 is discharged from the central water outlet 8 toward the standing wall portion 20 and is diverted to each rear rim water conduit 22. In this embodiment, the water is discharged from the rim water discharge port 26 and the cleaning water that has passed over the standing wall 20 is discharged from the slit opening 24. However, the present invention is not limited to such a mode, and the water is supplied from the cleaning water source. The discharged water may be distributed to a plurality of locations using a distributor, and the discharged water may be discharged so that a part of the cleaned water collides with the back side of the standing wall portion. As a result, the washing water over the standing wall can flow into the rear side of the bowl portion from a predetermined gap between the rear surface of the rim portion and the standing wall portion, and the area of the rear surface of the rim portion which is a non-cleaning portion can be reduced. Since it can also be made small, the cleaning property of the toilet body can be improved.

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 4 Bowl part 6 Central conduit 8 Central spout 10 Soil receiving surface 12 Shelf part 12a Rear side shelf part 12b Side side shelf part 14 Rim part 14a Rear side part of rim part 14b Rim hanging wall 14c Surface of rim hanging wall 16 Reservoir 18 Drain trap pipe (drain trap)
18a Inlet of drain trap pipe 20 Standing wall portion 20a Back surface of standing wall portion 20b Upper end of standing wall portion 20c Side end portion of standing wall portion 20d Front surface of standing wall portion 22 Rear side rim waterway 22a Rear side rim waterway inlet 22b Rear side rim Upper surface of water conduit 24 Slit opening (gap)
26 Rim spout 28 Recess

Claims (7)

A flush toilet that cleans the toilet bowl body with wash water supplied from a wash water source and discharges filth,
A bowl portion comprising a filth receiving surface for receiving filth, and a shelf formed on the upper edge of the filth receiving surface;
A rim portion formed on the upper edge of the bowl portion for discharging cleaning water into the bowl portion;
A reservoir portion formed below the bowl portion;
A drain trap part that is formed so as to extend rearward from an inlet connected to the lower end of the water storage part, and discharges filth,
A standing wall portion that is formed in a shelf on the rear side of the bowl portion or a water conduit upstream thereof and protrudes upward,
The standing wall portion is provided on the side of the bowl portion disposed on the left and right after the washing water supplied from the washing water source and discharged from the substantially central water conduit at the rear of the bowl portion collides with the standing wall portion. The flush toilet is formed so as to flow to the front side of the bowl part via the shelf part on the side of the bowl part.   The flush toilet according to claim 1, wherein the rim portion is formed so that a rear surface thereof covers a part of the standing wall portion via a predetermined gap.   The flush toilet according to claim 1 or 2, wherein the standing wall portion is formed in a curved shape so as to be along a circumferential direction of the shelf portion in a plan view.   The standing wall portion according to any one of claims 1 to 3, wherein when viewed from the front, the central portion is formed so as to be highest, and is formed so as to be lowered toward a side end portion of the standing wall portion. The flush toilet described.   The flush toilet according to any one of claims 1 to 4, wherein the standing wall is formed symmetrically in a front view.   The bowl part further includes a non-shelf part area where the shelf part is not formed on the front side or an inclined shelf part area which is most inclined among the shelf parts, and a front center of the filth receiving surface. A flush toilet according to any one of claims 1 to 5, further comprising a recess formed in the region so as to extend in the front-rear direction. A flush toilet that cleans the toilet bowl body with wash water supplied from a wash water source and discharges filth,
A bowl portion comprising a filth receiving surface for receiving filth, and a shelf formed on the upper edge of the filth receiving surface;
A rim portion formed on the upper edge of the bowl portion for discharging cleaning water into the bowl portion;
A reservoir portion formed below the bowl portion;
A drain trap part that is formed so as to extend rearward from an inlet connected to the lower end of the water storage part, and discharges filth,
A standing wall portion that is formed in a shelf on the rear side of the bowl portion or a water conduit upstream thereof and protrudes upward,
The flush toilet, wherein the rim portion is formed so that a rear surface thereof covers a part of the standing wall portion through a predetermined gap.

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