JP4305109B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet, and more particularly, to a flushing prevention structure for a flush toilet that performs flushing by supplying wash water to a bowl portion so as to swirl.

As a conventional flush toilet bowl, a flush toilet bowl is known in which flush water is supplied to the bowl portion so as to swirl to wash the toilet bowl. (For example, refer to Patent Document 1).
The flush toilet described in Patent Document 1 will be described with reference to FIGS. FIG. 18 is an explanatory view showing the toilet bowl with the upper surface almost broken over the entire area, and FIG. 19 is each part of the AA, BB, CC, and DD lines of FIG. It is the general | schematic fragmentary sectional view which fractured | ruptured the rim | limb part.
As shown in FIG. 18, the cleaning water supplied from the cleaning water supply hole 140 passes through the cleaning water supply channel 141, the Zet water supply channel 146 communicated with the Zet jet outlet 122 provided at the bottom of the bowl portion 120, and the rim. Branching is made to a rim water supply passage 143 communicating with a rim outlet 144 provided at the left rear portion of the portion 121. The rim cleaning water RS ejected from the rim outlet 144 through the rim water supply channel 143 flows on the upper surface of the shelf 150 formed around the rim 121 near the bowl 120, and the bowl 120. Rotate to wash water. In addition, a siphon action is generated by the jet washing water ejected from the set ejection port 122, and the filth in the bowl portion 120 is discharged together with the stored water.
The shelf 150 is configured by a substantially horizontal surface as shown in FIG. 19, and an overhang portion 152 is formed so as to cover the shelf 150, so that the rim cleaning water that swirls around the shelf vigorously. It prevents the RS from jumping out of the toilet bowl.

Japanese Patent Laid-Open No. 2001-279991

The flush toilet described in Patent Document 1 can provide a rim portion that is significantly more cleanable than a conventional toilet, but there is an overhang portion 152 provided to prevent water splashing, so that the shelf Although the rim cleaning water RS turning around the portion 150 does not jump out to the outside, it appears depending on the standing position when dirt adheres to the back side of the overhang portion 152 (the surface opposite to the bowl portion 120). It was difficult to clean the part.
Therefore, the present invention has been made to solve the above problems, and the problem of the present invention is that the rim cleaning water jumps out of the flush toilet in a toilet that is placed on a shelf and swirls the rim cleaning water. An object of the present invention is to provide a flush toilet in which rim washing water does not jump out even if there is no overhang portion covering the shelf.

In order to achieve the above object, in the flush toilet according to claim 1, the flush toilet is configured to supply toilet bowl wash water to a toilet bowl portion in which stored water is stored to wash the toilet bowl, from the upper edge of the bowl portion. A main washing shelf is formed on the inner periphery of the bowl part on the way to the water storage part, and a sub-washing shelf part is formed outside the main washing shelf at least near the front end of the toilet bowl part. The main cleaning shelf and the sub-cleaning shelf form a bowl portion inner surface continuously by a main cleaning vertical surface rising from the main cleaning shelf, and are placed in a substantially horizontal direction on the main cleaning shelf. And a main bowl part jetting part for jetting cleaning water so as to cause swirling.

Accordingly, since the cleaning water is placed on the main cleaning shelf and the auxiliary cleaning shelf provided on the inner periphery of the bowl and swivels in the horizontal direction, the bowl cleaning water path is formed by a surface continuous with the bowl. Excellent cleaning performance.
A sub-washing shelf is formed on the outer periphery at the front end position of the toilet bowl portion where the washing water is likely to jump out due to centrifugal force because the curvature is the smallest in the path swirling horizontally along the main washing shelf. Therefore, even if the washing water jumps out of the main washing shelf by centrifugal force, it can be received by the sub washing shelf, so that the washing water can be prevented from jumping out from the upper edge of the bowl portion.

  In addition, the main bowl part ejection part is provided at the rear side of the toilet bowl part side, and the wash water ejected from the main bowl part ejection part is connected to the main washing shelf part and the auxiliary washing partway through the bowl part front end. If it is formed so as to branch to the shelf, the washing water spouted from the rear side of the bowl side is the main washing shelf in front of the top of the bowl portion where the curvature of the elliptical bowl surface changes greatly. Branches to a sub-cleaning shelf that is configured outside the main cleaning shelf. At that time, a large amount of cleaning water is distributed to the main cleaning shelf, so the bowl is strongly cleaned with a relatively large amount of cleaning water. In addition, it is possible to clean the sub-cleaning shelf without causing water splashing with a relatively small amount of cleaning water supplied from the main bowl spraying portion supplied to the sub-cleaning shelf.

  Further, the main bowl portion ejection portion is provided at the rear side of the toilet bowl portion side, and a main washing shelf portion is formed on the inner periphery of the bowl surface in the middle from the upper edge of the bowl portion in front of the toilet bowl portion. The sub-cleaning shelf is continuously formed on the rim upper edge side of the main bowl portion ejection portion, and a sub-bowl portion ejection portion for supplying cleaning water to the sub-cleaning shelf portion is provided. If it is, the sub-washing shelf is configured in the portion where the curvature of the toilet bowl tip where water splash is likely to occur is small, and the main cleaning shelf is configured to reduce the change in curvature at the lower part, Of the main bowl wash water and sub-bowl wash water jetted from the rear side of the bowl, the main bowl wash water is set stronger to ensure the peripheral washability of the bowl and the swirling force of the stored water. At the same time, the secondary bowl cleaning water is supplied to the top of the bowl. By setting the shelf so that it circulates in a water force that does not jump out of the bowl surface, it ensures strong cleaning power near the draft surface where water is swirling and dirty, and water from the tip of the bowl surface. It is possible to perform bowl cleaning while suppressing popping out of the water. At this time, since the wash water can be ejected from the main bowl portion ejection portion and the sub bowl portion ejection portion based on the prescribed distribution, it is possible to easily supply an appropriate amount of washing water to each of the main and secondary wash shelves. .

  Further, the main washing shelf facing the center line of the flush toilet is provided with a second main bowl ejection part for ejecting washing water in the same turning direction as the main bowl part ejection part. For example, the bowl portion washing water can be supplied to the entire circumference of the rim including the rear portion of the toilet bowl in a short time, and the unwashed portion of the bowl portion can be eliminated.

  The main washing shelf facing the center line of the flush toilet is provided with a second main bowl ejection part for ejecting washing water in a direction to merge at the main bowl part ejection part and the toilet bowl end. If so, a large amount of bowl part washing water can be supplied to the front end of the bowl part, and a mainstream (striking) of filth transfer to the outlet of the flush toilet can be created, improving the toilet bowl washing performance. .

  Further, if a bubble mixing means for mixing bubbles into the bowl washing water is provided, it is possible to prevent water splashing due to contact with the shelf due to mixing of bubbles, and as a result, it is possible to prevent water from jumping out.

  Further, if the inner periphery of the bowl portion upper edge of the flush toilet is vertically or outwardly widened, the inner periphery of the bowl portion upper edge is vertically or outwardly widened. The entire bowl part including the part can be visually observed and cleaned, and is more excellent in cleanability.

  An overhang of the rim portion of the toilet bowl can be eliminated to improve cleaning performance, and a toilet bowl in which rim washing water does not jump out of the toilet bowl can be provided.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 is a plan view of a flush toilet according to the first embodiment of the present invention, FIG. 2 is a sectional view of the flush toilet, FIG. 3 is a perspective view of a water conduit to the bowl portion, and FIG. -A, BB sectional drawing, FIG. 5 is the figure which showed the flow of the rim washing water in FIG.

  The flush toilet A is made of earthenware, and includes a bowl portion 1 that is a waste receiving surface, a rim portion 2 that forms an opening edge of the bowl portion 1, and a tank portion 3 that is provided behind the bowl portion 1. In FIG. 1, the tank portion 3 is a so-called one-piece flush toilet in which the tank portion 3 is continuously formed integrally with the rim portion 2.

  Between the bowl portion 1 and the rim portion 2, a main washing shelf 1a and a sub washing shelf 1b are formed. The two shelves 1a and 1b are surfaces that are nearly parallel to the floor surface formed at a position close to the rim portion 2 above the bowl portion 1, and in the present invention, the rim is an inclination angle of the surfaces. The surfaces where the angle formed by the tangent of the surface from the part 2 to the bowl part 1 and the horizontal surface with the floor surface is in the range of 0 to 15 degrees are defined as the shelf parts 1a and 1b.

As shown in FIG. 2, the main cleaning shelf 1a and the auxiliary cleaning shelf 1b are connected by a main cleaning vertical surface 1c rising from the main cleaning shelf 1a , and the auxiliary cleaning shelf 1b and the rim are connected. The part 2 is connected by a sub-cleaning vertical surface 1d. Specifically, in the cross section of the bowl part 1, the surface having an angle of 0 ° to 15 ° with the horizontal surface formed in front from the inside to the outside (the rim part 2 side) is mainly. It is the cleaning shelf 1a, and the surface that is continuous with the main cleaning shelf 1a and that has an angle of more than 15 degrees with the horizontal plane is the main cleaning vertical surface 1c, and is continuous with the main cleaning vertical surface 1c. The sub-cleaning shelf 1b is a surface in the range of 0 ° to 15 ° with respect to the horizontal surface and is a surface continuous with the sub-cleaning shelf 1b, and the angle with the horizontal surface is 15 °. The surface connected to the rim portion 2 beyond this is the sub-cleaning vertical surface 1d.

At the time of toilet cleaning, the user rotates the drain lever 5 to move the drain valve 6 upward, and the wash water stored in the tank unit 3 flows into the wash water conduit 7. The wash water that has flowed into the wash water conduit 7 is divided into the rim conduit 8 and the jet conduit 9, and the rim wash water W that has flowed into the rim conduit 8 is a main bowl portion ejection portion (see FIG. 5). It is ejected from the rim spout) 10 toward the upper surfaces of the shelf portions 1a and 1b. On the other hand, the Zet washing water Wz that has flowed into the Zet water conduit 9 is jetted into the accumulated water 12 from the Zet spout 11 and pushes the accumulated water 12 toward the trap part 13 to generate a siphon action and discharge the filth. .
The trap portion 13 and a drain pipe (not shown) provided on the floor surface are connected by a resin drain socket 14 formed separately from the flush toilet A. Inside the path, a flow path is bent to promote the generation of siphon action.

Next, the cleaning of the bowl portion 1 will be described with reference to FIGS.
The main bowl portion ejection portion 10 that ejects cleaning water toward the bowl portion 1 is configured in common with the sub-cleaning shelf portion 1b and the bottom thereof (see FIG. 4A). The rim cleaning water W ejected from the main bowl portion ejection portion 10 is ejected on the sub washing shelf portion 1b, and the shelf width of the sub washing shelf portion 1b is narrow in the vicinity of the main bowl portion ejection portion 10. It is configured. That is, as shown in FIG. 4B, by connecting the sub-cleaning shelf 1b and the main cleaning vertical surface 1c with a surface having a large curvature, the angle formed with the horizontal plane is 15 degrees or less. The width is narrow.
Therefore, most of the rim cleaning water W ejected from the main bowl portion ejection portion 10 flows down to the main washing shelf surface 1a. Therefore, a large flow main cleaning shelf cleaning water Wa branched from the rim cleaning water W swivels the main cleaning shelf 1a, and the bowl portion 1 is strongly cleaned with the large flow main cleaning shelf cleaning water Wa. To do.

On the other hand, since the sub-cleaning shelf cleaning water Wb has a small flow rate, and the sub-cleaning shelf 1b is formed wide at the front, the flow in the sub-cleaning shelf 1b by the sub-cleaning shelf cleaning water Wb. Is weak and widely distributed on the shelf. Therefore, even if the sub-cleaning vertical surface 1d rises substantially vertically and there is no folded portion or the like, the sub-cleaning shelf cleaning water Wb does not jump out of the rim portion 2 and wet the outside of the flush toilet A.
In addition, since the main washing shelf washing water Wa has a large flow rate, it may exceed the main washing vertical surface 1c, but there is a sub washing shelf 1b there, and the outside of the flush toilet A is outside. Pop-out does not occur.

  And the sub washing | cleaning vertical surface 1d which connects the rim | limb part 2 and the sub washing | cleaning shelf part 1b which form the bowl part upper edge of the flush toilet A is a shape which spreads to the perpendicular | vertical or the outer side. Further, the main cleaning vertical surface 1c that connects the sub-cleaning shelf 1b and the main cleaning shelf 1a is also shaped to spread vertically or outward. For this reason, the inner surface of the bowl portion 1 has no blind spot from above the bowl portion 1. Therefore, cleaning of the inner surface of the flush toilet A from the bowl portion 1 to the rim portion 2 is very simple.

  FIG. 6 is a perspective view of the water conduit to the bowl portion of the flush toilet according to the second embodiment of the present invention, and FIG. 7 is a sectional view taken along the line CC. In this flush toilet B, a distribution partition 20 is provided at the outlet portion of the rim water conduit 8, and the outlet portion is divided into a main bowl portion ejection portion 10a and a sub bowl portion ejection portion 10b. FIG. 8 is a view showing a state in which the rim cleaning water is ejected in FIG.

The main bowl portion ejection portion 10a ejects the rim cleaning water W to the main cleaning shelf portion 1a, and the sub bowl portion ejection portion 10b ejects the rim cleaning water W to the auxiliary cleaning shelf portion 1b.
Specifically, as shown in FIG. 8, the bowl cleaning water W supplied from the rim conduit 8 is distributed by the distribution partition 20 into the main shelf cleaning water Wa and the sub shelf cleaning water Wb. In addition, the opening ratio by the distribution partition 20 is set so that the distribution ratio of the main shelf cleaning water Wa and the sub shelf cleaning water Wb is about 6: 4 to 8: 2.
Therefore, even if the shelf width of the auxiliary cleaning shelf 1b is not provided as in the flush toilet A described above, the openings of the main auxiliary bowl portion ejection portion 10a and the auxiliary bowl portion ejection portion 10b are respectively the main washing. Since it is suitable for the shelf 1a and the sub-cleaning shelf 1b, the discharged wash water can be placed on the respective shelf, so that the main bowl shelf ejection portion having a large opening ratio is increased to the main washing shelf 1a. As with the flush toilet A, the occurrence of water splash can be prevented even if the rim portion 2 does not have a folded portion or the like.

Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a perspective view of the water conduit to the bowl portion of the flush toilet according to the third embodiment, FIG. 10 is a sectional view taken along the line DD, and FIG. FIG.
In this flush toilet C, as shown in FIGS. 9 and 10, a flush water branch 30 is opened at the bottom of the rim conduit 8, and this flush water branch 30 passes through the pottery of the toilet C. The main bowl portion ejection portion 10a provided in the main washing shelf 1a communicates with the main washing shelf portion 1a. Moreover, the sub bowl part ejection part 10b is opened with respect to the sub washing shelf part 1b.

In this configuration, the rim cleaning water W supplied from the rim water conduit 8 is the main cleaning shelf portion 1a provided with the cleaning water that has dropped from the cleaning water branch port 30 downward (reserved water side in FIG. 11). From the bowl part ejection part 10a, it ejects as the main washing shelf washing water Wa, and the remainder is ejected from the auxiliary bowl part ejection part 10b as the auxiliary washing shelf washing water Wb. The opening area of the cleaning water branch port 30 is set so that the distribution ratio of the main shelf cleaning water Wa and the sub shelf cleaning water Wb is about 6: 4 to 8: 2.
Therefore, the flush water flowing down from the flush branch port 30 set to the above opening area does not flow in the toilet bowl C even when the shelf width of the secondary washing shelf 1b is not narrow as in the flush toilet A described above. Since water is discharged to the main washing shelf via the interior of the pottery, a large amount of washing water can be supplied to the main washing shelf, and, like the flush toilet A, the rim portion 2 has no folded portion or the like. However, the occurrence of water splash can be prevented.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a perspective view of the water guide path to the bowl portion of the flush toilet according to the fourth embodiment, and FIG. 13 is a view showing a state in which the rim cleaning water is ejected.
In this flush toilet D, as shown in FIG. 12, the rim waterway 8 branches to the left and right (up and down in FIG. 12) across the center line in the front-rear direction of the flush toilet, and one rim waterway 8a The communicating main bowl portion jetting portion 10 opens to the sub-cleaning shelf 1b at the rear side of the bowl portion 1, and the second main bowl portion jetting portion 40 communicating with the other rim conduit 8b is connected to the rim guide. The tip of the water channel 8 is formed by making a U-turn.

  In this configuration, most of the rim washing water W supplied from the rim conduit 8a flows down to the main washing shelf 1a since the shelf width of the auxiliary washing shelf 1b is narrow as in the flush toilet A described above. A large flow main cleaning shelf cleaning water Wa is formed, and the remainder becomes a small flow auxiliary cleaning shelf cleaning water Wb. Further, the rim cleaning water W2 ejected from the other rim conduit 8b ejects cleaning water from the second main bowl portion ejection portion 40 to the sub washing shelf 1b in the same turning direction as the main bowl portion ejection portion 10. The rear of the bowl portion 1 is configured to be washable. The rim cleaning water W2 ejected from the second main bowl portion ejection portion 40 is formed so that the majority of the rim washing water W2 flows down to the main washing shelf 1a because the shelf width of the sub washing shelf 1b is narrow. It is.

Therefore, as in the flush toilet A described above, by providing a portion with a narrow shelf width of the auxiliary washing shelf 1b, a large amount of washing water can be supplied to the main washing shelf 1a, before and after the flush toilet. Cleaning can be performed while cleaning water swirls in the same direction on each of the main cleaning shelves facing each other across the center line. Similarly to the flush toilet A, the occurrence of water splash can be prevented even if the rim portion 2 has no folded portion or the like.
And since the 2nd main bowl part ejection part 40 is provided, the ejection water flow (flow velocity) from the main bowl part ejection part 10 can be made weak, and the front (right side in FIG. 12) of the flush toilet D with the smallest curvature is possible. ) Can be suppressed.

Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a perspective view of the water conduit to the bowl portion of the flush toilet according to the fifth embodiment.
In this flush toilet E, as shown in FIG. 14, the rim water channel 8 branches right and left (up and down in FIG. 14) across the center line in the front-rear direction of the flush toilet, and one of the rim water channels 8a and The communicating main bowl part ejection part 10 opens to the secondary washing shelf 1b at the rear side of the bowl part 1 and is divided by a distribution partition 20 provided in the secondary washing shelf 1b in the same manner as the flush toilet B described above. A main bowl portion jetting portion 10a for jetting a large flow rate of the main cleaning shelf cleaning water Wa and a sub bowl portion jetting portion 10b for jetting the small flow rate of the auxiliary cleaning shelf washing water Wb are formed. In addition, the 2nd bowl part ejection part 40 connected with the other rim water guide channel 8b is formed by making the front end of the rim water guide channel 8 U-turn.

Therefore, as in the flush toilet B described above, a large amount of washing water can be supplied to the main washing shelf 1a by the distribution partition 20, and the main washing shelf that faces the front and rear direction of the flush toilet across the center line. Cleaning can be performed while the cleaning water swirls in the same direction. Similarly to the flush toilet B, the occurrence of water splash can be prevented even if the rim portion 2 has no folded portion or the like.
And since the 2nd main bowl part ejection part 40 is provided, generation | occurrence | production of the water jump in the front (right side in FIG. 14) of the flush toilet D with the smallest curvature like the flush toilet D can be suppressed. It should be noted that the width of the sub-cleaning shelf 1b in the washing water jet direction of the second main bowl portion jetting portion 40 is narrowed in the same manner as in the fourth embodiment so that most of the washing water flows down to the main washing shelf portion 1a. However, the same effect can be obtained by providing a distribution partition as in this embodiment.

Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 15 is a perspective view of the water conduit to the bowl portion of the flush toilet according to the sixth embodiment.
In this flush toilet F, as shown in FIG. 15, the rim water guide path 8 branches right and left (up and down in FIG. 15) across the center line in the front-rear direction of the flush toilet, and one rim water guide path 8a As with the flush toilet C described above, the washing water branch port 30 is provided, the main bowl portion ejection portion 10a for ejecting the large-flow main washing shelf washing water Wa, and the small-flow sub-washing shelf washing. A sub bowl portion ejection portion 10b for ejecting water Wb is formed. The second bowl portion ejection portion 40 communicating with the other rim conduit 8b is formed by making a U-turn at the tip of the rim conduit 8.

Accordingly, as in the flush toilet C described above, a large amount of flush water can be supplied to the main washing shelf 1a through the flush water branch port 30. Like the flush toilet C, the rim 2 has a folded portion or the like. Even without it, the occurrence of water splash can be prevented.
And since the 2nd main bowl part ejection part 40 is provided, like the flush toilet D, generation | occurrence | production of the water jump in the front (right side in FIG. 15) of the flush toilet D with the smallest curvature can be suppressed. It should be noted that the width of the sub-cleaning shelf 1b in the direction of cleaning water jetting of the second bowl portion jetting portion 40 is narrowed in the same manner as in the fourth embodiment so that most of the cleaning water flows down to the main cleaning shelf 1a. However, the same effect can be obtained even if a distribution partition is provided as in this embodiment.

Next, a seventh embodiment of the present invention will be described with reference to FIGS. FIG. 16 is a perspective view of the water conduit to the bowl portion of the flush toilet according to the seventh embodiment, and FIG. 17 is a view showing a state in which the rim cleaning water is ejected.
In this flush toilet G, as shown in FIG. 16, the rim waterway 8 branches to the left and right (up and down in FIG. 16) across the center line in the front-rear direction of the flush toilet, and one rim waterway 8a As in the flush toilet C described above, the washing water branch port 30a is provided on the bottom surface, and the main bowl portion ejection portion 10a for ejecting the large-flow main washing shelf washing water Wa and the small-flow sub-washing. A sub bowl portion ejection portion 10b for ejecting the shelf cleaning water Wb is formed. A washing water branch port 30b is also provided on the bottom surface of the other rim conduit 8b, and a second main bowl portion ejection portion 40a is formed on the main washing shelf 1a.

  In the above configuration, the main washing shelf washing water Wa ejected from the main bowl portion ejection portion 10a and the second main shelf washing water W2a ejected from the second main bowl portion ejection portion 40a are the tip of the flush toilet G. Side (the right side in FIG. 17) merge to form a flow Wj toward the stored water 12. This flow can create a flow Wj toward the trap 13 and promote siphon generation, so that the waste transport performance of the toilet is improved. In addition, the presence of the sub-cleaning shelf 1b can prevent the occurrence of water splash even when a large amount of cleaning water is supplied to the main cleaning shelf 1a even if the rim 2 does not have a folded portion or the like.

  In the seventh embodiment, the washing water is supplied to the main washing shelf using a washing water branch port such as the flush toilet C, but the auxiliary washing shelf such as the flush toilet A is provided. A large amount of washing water may be supplied to the main washing shelf using a means for narrowing the width or a means for using a distribution partition such as the flush toilet B.

In the above-described embodiment, an ejector nozzle capable of mixing air into the rim water spouting port is provided, and the rim cleaning water Wr can be used as bubble mixed water. If it does so, scattering of washing water can be controlled still more effectively.
In addition to the embodiment in which the rim cleaning water supply source to the rim spout is supplied from a tank formed integrally with the rim, it can also be supplied from a tank formed separately from the rim. The tank does not need to be placed on the rim portion, and may be fixed to the corner of the toilet room.
Furthermore, the washing water supply source to the rim spout may be a direct pressure type that is supplied from a pipe directly connected to the water pipe, and in that case, it is adjusted to a predetermined flow rate by a pressure reducing valve or a constant flow valve. Need to be supplied.
Further, the sub-cleaning shelf does not need to be provided over the entire circumference of the bowl, and only has a small curvature and only near the tip of the bowl that has a high probability of splashing of cleaning water from the main cleaning shelf, or Alternatively, it may be provided only on the front half circumference of the bowl portion.

The top view of the flush toilet concerning 1st embodiment of this invention. Sectional drawing of the flush toilet bowl of FIG. The figure which saw through the water conduit to the bowl part of the flush toilet bowl of FIG. Sectional drawing in AA of FIG. 3 and BB. The figure which showed the flow of the rim washing water in FIG. The figure which saw through the water conduit to the bowl part of the flush toilet bowl concerning 2nd embodiment. Sectional drawing in CC of FIG. The figure which showed the flow of the rim washing water in FIG. The figure which saw through the water conduit to the bowl part of the flush toilet concerning 3rd embodiment. Sectional view along DD in FIG. The figure which showed the flow of the rim washing water in FIG. The figure which saw through the water conduit to the bowl part of the flush toilet bowl concerning 4th embodiment. The figure which showed the flow of the rim washing water in FIG. The figure which saw through the water conduit to the bowl part of the flush toilet concerning a fifth embodiment. The figure which saw through the water conduit to the bowl part of the flush toilet bowl concerning 6th embodiment. The figure which saw through the water conduit to the bowl part of the flush toilet concerning 7th embodiment. The figure which showed the flow of the rim washing water in FIG. Explanatory drawing which fractures | ruptures and shows the upper surface of the conventional toilet bowl over substantially the whole region. The general | schematic partial cross section which fractured | ruptured the rim | limb part in each line of the AA line of FIG. 18, BB line, CC line, and DD line.

Explanation of symbols

A, B, C, D, E, F, G ... Flush toilet 1 ... Bowl part 1a ... Main washing shelf part 1b ... Sub washing shelf part 2 ... Rim part 3 ... Tank part 5 ... Drain lever 6 ... Drain valve 7 ... Wash water conduit 8 ... Rim conduit 9 ... Zet conduit 10 ... Main bowl portion ejection portion 10a ... Main bowl portion ejection portion 10b ... Sub bowl portion ejection portion 11 ... Zet spout 12 ... Water reservoir 13 ... Trap portion 14 ... Drainage socket 20 ... distribution partition 30 ... washing water branch port 40 ... second main bowl jetting part

Claims (8)

A flush toilet for cleaning toilet bowl by supplying bowl part wash water to the toilet bowl part for storing the stored water, and the main wash shelf is provided on the inner periphery of the bowl part from the upper edge of the bowl part to the reservoir part. Are formed, and at least in the vicinity of the front end of the toilet bowl portion, a sub-cleaning shelf is formed outside the main cleaning shelf , and the main cleaning shelf and the auxiliary cleaning shelf are: The bowl part inner surface is continuously formed by the main washing vertical surface rising from the main washing shelf,
A flush toilet comprising a main bowl portion ejection portion for ejecting washing water so as to swivel in a substantially horizontal direction on the main washing shelf.   The main bowl part ejection part is provided at the rear part on the side of the toilet bowl part, and the washing water ejected from the main bowl part ejection part is in the middle of reaching the front end of the bowl part and the main washing shelf part and the auxiliary washing shelf part. The flush toilet according to claim 1, wherein the flush toilet is formed so as to be branched into two. The bowl portion washing water is characterized with the main cleaning ledge main bowl portion ejecting unit for supplying washing water to, to be supplied by the auxiliary bowl portion ejecting unit for supplying wash water to the auxiliary cleaning ledge The flush toilet according to claim 1.   The main washing shelf facing the center line of the flush toilet is provided with a second main bowl portion ejection portion that ejects washing water in the same turning direction as the main bowl portion ejection portion. The flush toilet according to claim 2 or 3.   The main washing shelf that faces the center line of the flush toilet is provided with a second main bowl jetting part that jets washing water in a direction that merges at the main bowl jetting part and the toilet bowl tip. The flush toilet according to claim 2 or 3, wherein the flush toilet bowl is provided. The flush toilet according to any one of claims 1 to 5, further comprising bubble mixing means for mixing bubbles into the bowl portion washing water. The flush toilet bowl according to any one of claims 1 to 6, wherein the inner periphery of the upper edge of the bowl portion of the flush toilet bowl has a shape extending vertically or outward.   The flush toilet according to any one of claims 1 to 7, wherein an amount of washing water supplied to the main washing shelf is larger than an amount of washing water supplied to the sub washing shelf.

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