JP2009091813A - Flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush toilet bowl which is saved in space and in which specified refill water is supplied at all times. <P>SOLUTION: This flush toilet bowl comprises a first tank (14) for storing flushing water to supply the flushing water to a first discharge hole (14a) and a second tank (16) for storing the flushing water to supply the flushing water to a second discharge hole (16a). The second tank is disposed inside the first tank. The flushing water is supplied to the second tank through a water supply pipe (48). The second tank comprises a supplement water pipe (22) for supplying refill water to a toilet bowl body and a first tank flushing water supply hole (50) for supplying the flushing water to the first tank by making the flushing water overflow from the second tank. When the flushing water is supplied to the second tank through the water supply pipe and a level of the flushing water in the second tank exceeds a predetermined level, the refill water is supplied to the toilet bowl body through the supplement water pipe, and also supplied to the first tank through the first tank flushing water supply hole. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flush toilet, and in particular, a water storage tank for storing cleaning water for cleaning the toilet body, a first water outlet and a first water outlet for supplying cleaning water from the water storage tank to the toilet body. The present invention relates to a flush toilet having two spouts.

Patent Document 1 discloses a flush toilet in which, when the water level of the rim cleaning water tank rises, the cleaning water flows from the notch portion of the rim cleaning water tank to the jet cleaning water tank. Yes.
Further, Patent Document 2 discloses a flush toilet having a replenishment water pipe for supplying refill water from a water supply pipe on the toilet body side separately from an overflow pipe in a low tank.
Similarly, Patent Document 3 discloses a flush toilet having a replenishment water pipe for supplying refill water from a water supply pipe on the toilet body side separately from an overflow pipe in a low tank.

JP 2006-291451 A Japanese Utility Model Publication No.4-1276 JP 61-122339 A

  Here, in the flush toilet described in Patent Document 1, the refill water from the water supply pipe is directly supplied into the overflow pipe via the extension of the water supply pipe, and is supplied to the overflow pipe. The wash water bypasses the jet spout and returns the water level of the wash water in the bowl portion to a predetermined position after refining (refill). However, such an extension of the water supply pipe takes up space in the tank, which hinders miniaturization of the tank. In addition, there has been a problem that the amount of refill water varies due to fluctuations in the feed pressure of the wash water from the feed pipe.

  On the other hand, even with the structures described in Patent Documents 2 and 3, it is necessary to provide a replenishment water pipe for supplying refill water from the water supply pipe on the toilet main body side separately from the overflow pipe. This hindered the miniaturization of the tank. These structures also have a problem in that the amount of refill water varies due to fluctuations in the feed pressure of the wash water from the feed water pipe.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a flush toilet that can supply a constant amount of refilled water in a space-saving manner.

  In order to achieve the above object, the present invention includes a water storage tank for storing cleaning water for cleaning the toilet body, a first discharge port for supplying cleaning water to the toilet body from the storage tank, and a second discharge port. A tank structure of a flush toilet having an outlet, wherein the water storage tank has a first tank for storing wash water for supplying wash water to the first discharge port, and wash water for the second discharge port. A second tank for storing cleaning water for supply, the first tank is provided with a first drain valve for supplying and stopping the cleaning water to the first discharge port, The second tank is provided with a second drain valve for supplying and stopping washing water to the second discharge port, and the second tank is supplied with washing water from a water supply pipe. When the water level of the wash water in the first tank exceeds the predetermined water level, the water is stopped. The tank has a replenishment water pipe for supplying refill water to the toilet body, and a first tank wash water supply for overflowing wash water from the second tank and supplying the wash water to the first tank. When the cleaning water is supplied from the water supply pipe to the second tank and the water level of the second tank exceeds a predetermined water level, refill water is supplied from the makeup water pipe to the toilet body and The cleaning water is supplied to the first tank from one tank cleaning water supply port.

  In the present invention configured as described above, cleaning water is supplied to the second tank from the water supply pipe, and a supply water pipe for supplying refill water to the toilet body is supplied to the second tank, A first tank wash water supply port is provided for overflowing wash water from the tank and supplying the wash water to the first tank, and the wash water is supplied from the water supply pipe to the second tank. When the level of the cleaning water in the tank exceeds a predetermined level, refill water is supplied from the makeup water pipe to the toilet body, and the cleaning water is supplied from the first tank cleaning water supply port to the first tank. Yes. Therefore, the refill water can be supplied by overflow from the make-up water pipe, and the conventional make-up water pipe structure in which the water supply valve and the overflow pipe are communicated with each other becomes unnecessary, so that the arrangement of parts in the second tank can be simplified. A space can be created in the second tank. In addition, since the water supply pipe is not directly connected to the makeup water pipe, when supplying refill water, it is difficult to be affected by the water supply pressure of the water supply pipe, and the amount of auxiliary water supplied from the auxiliary water pipe can be kept almost constant. .

In the present invention, preferably, the first tank cleaning water supply port is provided at the peripheral edge of the second tank, and the makeup water pipe is disposed in the second tank at a position close to the first tank cleaning water supply port. Has been.
In the present invention configured as described above, the refill water supply amount and the cleaning water supply amount to the first tank are accurately adjusted even if an error occurs in the mounting position of the second tank to the first tank. I can do it. In addition, the flow of the cleaning water into the replenishing water channel and the water supply from the first tank cleaning water supply port to the first tank are started almost simultaneously.

In the present invention, preferably, the makeup water pipe also serves as an air guide passage for injecting air into the trap portion of the toilet body.
In the present invention configured as described above, since the air guide passage is used as a makeup water pipe, it is not necessary to newly provide a refill water passage in the toilet body, and the space can be used effectively. Moreover, since it is not necessary to provide the toilet body with a plurality of passages, the manufacturing cost of the toilet body can be reduced.

In the present invention, it is preferable that the second tank is disposed inside the first tank, the second discharge port is located above the first discharge port, and the first discharge port is a jet discharge port. The first tank is a jet tank that stores cleaning water to be supplied to the jet discharge port, the second discharge port is a rim discharge port, and the second tank is a cleaning to be supplied to the rim discharge port. It is a rim tank that stores water.
In the present invention configured as described above, since the rim tank having a smaller tank capacity than the jet tank is installed inside and above the jet tank, the entire washing water tank can be further downsized.

  According to the present invention, a constant amount of refill water can be supplied in a space-saving manner.

Hereinafter, a tank structure of a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, the structure of a flush toilet according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view of a flush toilet according to an embodiment of the present invention.

As shown in FIG. 1, a flush toilet 1 according to an embodiment of the present invention has a toilet body 2 made of earthenware. The toilet body 2 includes a bowl portion 4 for receiving filth, and a bottom portion of the bowl portion 4. A drain trap pipe 6 extending from the nozzle, a jet water outlet 8 for performing jet water discharge, and a rim water outlet 10 for performing rim water discharge are formed.
The jet spout 8 is formed at the bottom of the bowl portion 4 and is disposed substantially horizontally toward the inlet of the drain trap pipe 6 to discharge the wash water toward the drain trap pipe 6. ing. The rim water spouting port 10 is formed at the upper left rear of the bowl portion 4 and discharges cleaning water along the upper edge of the bowl portion 4.

  The drain trap pipe 6 includes an inlet 6a, a trap ascending pipe 6b that rises from the inlet 6a, and a trap descending pipe 6c that descends from the trap ascending pipe 6b. The trap ascending pipe 6b and the trap descending pipe 6c Between the two is the top 6d. A water pipe (not shown) is connected to the lower end of the trap downcomer 6c.

  The jet water outlet 8 and the rim water outlet 10 are connected to a cleaning water tank 12 so that the cleaning water in the cleaning water tank 12 is discharged from the jet water outlet 8 and the rim water outlet 10. More specifically, the jet water spouting port 8 is connected to the jet tank 14, and cleaning water in the jet tank 14 is supplied to the jet water spouting port 8 through the jet discharge port 14a (see FIG. 3). The rim water spouting port 10 is connected to a rim tank 16 provided inside the jet tank 14 as will be described later, and the cleaning water in the rim tank 16 is passed through the rim discharge port 16a (see FIG. 3). 10 is supplied.

  The flush toilet 1 further includes an air guide passage 20. The air guide passage 20 is provided in the rim tank 16 as will be described later, and the air guide pipe line 22 whose upper end is open to the atmosphere, and a part of the side surface of the drain trap pipe 6 inside the toilet body 2. And the air guide chamber 24 formed in the above. The air guide passage 22 and the air guide chamber 24 also serve as a replenishment water channel for supplying refill water to the bowl portion 4 as described later.

Furthermore, an air introduction hole 28 is formed in the inlet 6 a of the drain trap pipe 6, and the drain trap pipe 6 and the air guide chamber 24 are communicated with each other. Here, the operation of the air guide passage 20 will be described.
First, since the air guide chamber 24 communicates with the drain trap pipe 6 through the air guide hole 28, the water stored in the air guide chamber 24 is drawn into the drain trap pipe 6 through the air guide hole 28 by siphon action. As a result, the water level in the air guide chamber 24 drops. As the siphon action continues, most of the accumulated water in the air guide chamber 24 is drawn into the drain trap pipe 6 from the air guide hole 28, and the water level in the air guide chamber 24 is higher than the upper edge of the air guide hole 28. If descent also occurs, drainage of the stored water in the air guide chamber 24 is almost completed. Then, the air in the air guide chamber 24 is drawn into the drain trap pipe 6 through the air guide holes 28, and the atmosphere starts to be introduced into the drain trap pipe 6 through the air guide passage 24.

  Further, since air is drawn into the drain trap pipe 6 from the air guide hole 28, the negative pressure in the drain trap pipe 6 is reduced by that amount, and the bowl part 4 due to siphon action enters the drain trap pipe 6. The power to suck in the accumulated water is weakened. At this time, the water level in the bowl part 4 is located slightly above the upper edge of the drain trap pipe inlet part 6a, and is in a state immediately before air is drawn into the drain trap pipe 6 from the bowl part 4. It has become.

  Furthermore, since the force for sucking the accumulated water from the bowl part 4 into the drain trap pipe 6 due to the siphon action is maintained while weakening, the water level in the bowl part 4 further decreases. When the water level in the bowl part 4 is lower than the upper edge of the drain trap pipe inlet 6a, a space is formed between the water surface of the bowl part 4 and the upper edge of the drain trap pipe inlet 6a. After the air is drawn into the duct 6, the siphon action is finished.

  As described above, when air is drawn from the bowl portion 4 into the drain trap pipe 6, the air in the air guide passage 24 has already been introduced into the drain trap pipe 6 from the air guide hole 28. Since the force for sucking accumulated water from the bowl portion 4 into the drain trap pipe 6 due to the siphon action in the trap pipe 6 is weakened, the siphon sound is hardly heard.

Next, referring to FIGS. 2 and 3, the structure of the cleaning water tank according to the first embodiment of the present invention will be described. FIG. 2 is a plan view of the inside of the washing water tank according to the first embodiment of the present invention as viewed from above, with the lid portion of the washing water tank omitted and the toilet body side facing forward. FIG. 3 is a cross-sectional view of the washing water tank taken along line III-III in FIG.
As shown in FIGS. 2 and 3, a jet drain valve 30 that can open and close the jet discharge port 14 a is provided on the bottom surface of the jet tank 14. The jet drain valve 30 is connected to an operation mechanism unit 34 connected to a cleaning operation lever 32 by a ball chain (not shown). Then, when the cleaning operation lever 32 is turned, the jet drain valve 30 is pulled up, the jet discharge port 14a is opened for a predetermined time, and the cleaning water stored in the jet tank 14 flows into the jet water discharge port 8. ing.

A rim drain valve 36 that can open and close the rim discharge port 16 a is provided on the bottom surface of the rim tank 16. The rim drain valve 36 is also connected to the operation mechanism 34 by a ball chain (not shown), like the jet drain valve 30. Then, when the cleaning operation lever 32 is turned, the rim drain valve 36 is pulled up, the rim discharge port 16a is opened for a predetermined time, and the cleaning water stored in the rim tank 16 flows into the rim water discharge port 10. Yes.
In this embodiment, it is set so that the jet drain valve 30 and the rim drain valve 36 can be opened by a single operation.

  A ball tap 40 is provided in the jet tank 14 of the cleaning water tank 12. The ball tap 40 mainly has a float 42 and a diaphragm valve 44. When the level of the washing water around the float 42 is lowered, the position of the float 42 is also lowered, and when it is lowered, the diaphragm valve 44 is opened. On the other hand, when the washing water level around the float 42 rises, the float 42 floats on the washing water, the position rises upward, and the diaphragm valve 44 is closed.

  Here, a water supply pipe 48 connected to the water supply is connected to the diaphragm valve 44 through a stop cock 46. The water supply pipe 48 includes a first portion 48 a extending from the stop cock 46 to the bottom of the washing water tank 12, a second portion 48 b extending from the bottom of the jet tank 14 to the diaphragm valve 44, and water supply from the diaphragm valve 44 to the rim tank 16. The third portion 48d extends to the mouth 48c. When the diaphragm valve 44 is opened, the cleaning water is supplied into the rim tank 16 from the water supply port 48c. When the diaphragm valve 44 is closed, the supply of the cleaning water to the rim tank 16 is stopped.

In the rim tank 16, the air conduit 22 is provided as described above. The air conduit 22 also serves as a replenishment water channel for supplying refill water to the bowl portion 4. That is, when the washing water from the water supply pipe 48 into Rimutanku 16 is supplied, increases the cleaning water Rimutanku 16, when the water level comes up to the top portion shown in L ₀ in FIG. 3 of the supply water path 22, the supply Wash water flows into the water channel 22 and the wash water that has flowed in is supplied to the bowl portion 4 as refill water.

Here, when the toilet body 1 is washed and the washing water in the jet tank 14 and the rim tank 16 is lowered to DWL (dead water line), the jet drain valve 30 and the rim drain valve 36 are closed, and the water supply pipe 48 is closed. The supply of cleaning water from the water supply port 48c into the rim tank 16 starts. In the embodiment of the present invention, when the cleaning water in the rim tank 16 rises to the line indicated by L ₀ in FIG. 3, the cleaning water flows into the replenishing water channel 22 as described above, and at the same time the line L ₀ is lowered. Water supply to the jet tank 14 is started from the jet tank cleaning water supply port 50 serving as the edge via the jet tank water conduit 52. When the cleaning water level in the jet tank 14 rises, the float 42 of the ball tap 40 rises and reaches a predetermined water level, the diaphragm valve 44 is closed, and the water supply port 48c of the water supply pipe 48 enters the rim tank 16. The cleaning water supply is finished.

  Here, the configuration of the jet tank cleaning water supply port 50 and the jet tank conduit 52 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a perspective view showing a rim tank according to the first embodiment of the present invention, FIG. 5 is a side view of the rim tank according to the first embodiment of the present invention as viewed from the side, and FIG. FIG. 7 is a plan view of the rim tank according to the first embodiment as viewed from above, FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6, and FIG. 8 is taken along line VIII-VIII in FIG. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG.

As shown in FIG. 4, the rim tank 16 has a jet tank cleaning water supply port 50 formed by cutting out a part of its peripheral edge. As shown in FIGS. 4 and 5, the jet tank cleaning water supply port 50 is notched substantially in a rectangular shape in side view, the lower edge portion 50a of the space, the line indicated by L ₀ in Fig. 3 In the position. The lower edge, because it is in another position lower than the peripheral portion around the Rimutanku 16, the washing water Rimutanku 16 rises to the line indicated by L ₀ in FIG. 3, the washing water the jet tank washing water It overflows from the water supply port 50. Then, water supply to the jet tank 14 is performed.

  As shown in FIGS. 4 and 6, the jet tank cleaning water supply port 50 is formed to be concave from the peripheral edge of the rim tank 16 toward the inside of the rim tank 16 in plan view. In the present embodiment, the concave portion 50b is formed in a substantially rectangular shape. The concave shape may be another shape such as a semicircle or a semi-ellipse.

  Next, as shown in FIGS. 4 and 6, the jet tank cleaning water supply port 50 has a rectangular shape in which a corner portion 50 d is formed in an R shape in plan view. Also, as shown in FIGS. 4 and 6 to 9, the jet tank washing water supply port 50 has two lower end portions formed in an R shape with three straight sides when seen in a plan view. In the corner portion, it is composed of a curved surface 50e having a curved shape protruding sideways and obliquely upward. More specifically, the curved line 50e having a curved shape at the lower end has a normal line that changes in cross section. That is, the normal line is directed upward in the vertical direction at the upper edge part of the lower end part, and changes from the upper part in the vertical direction to the obliquely lower side toward the lower side as it goes from the upper part to the lower part of the lower end part. The lower edge portion of the lower end portion extends in the horizontal direction on the side. The curved surface 50e has a circular cross section.

  In addition, the curved shape of the lower end portion may be configured by a surface of another shape instead of the arc shape. Thus, by providing the curved surface 50e, the washing water overflowing from the jet tank washing water supply port 50 does not leave the curved surface 50e due to its viscosity or surface tension, and Without flowing away from the jet tank conduit 52 continuously connected to the curved surface 50e, the jet tank conduit 52 flows downward.

  Next, a jet tank conduit 52 is formed below the lower end portion 50 c of the jet tank cleaning water supply port 50. The jet tank conduit 52 is configured by a downwardly extending portion 50b formed in a concave shape in a plan view of the jet tank cleaning water supply port. The jet tank conduit 52 extends downward along the outer wall of the rim tank 16. The washing water overflowing from the jet tank washing water supply port 50 flows downward through the jet tank water channel 52 without leaving the jet tank water channel 52 due to its viscosity or surface tension. The lower end of the jet tank conduit 52 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14. Accordingly, the wash water overflowing from the rim tank 16 smoothly reaches the wash water in the jet tank 14.

  Here, in this embodiment, the rim tank is made of resin and the jet tank is made of earthenware, and such a combination is good. However, the rim tank is made of earthenware, and the rim tank and the jet tank may be integrally formed. Therefore, in the present embodiment, the jet tank cleaning water supply port 50 is provided in the vicinity of the replenishment water channel (air guide conduit) 22. Therefore, even if an error occurs in the attachment position of the rim tank 16 to the jet tank 14, as described above, the flow of cleaning water into the replenishing water channel 22 and the supply of water from the jet tank cleaning water supply port 50 to the jet tank 14 Are starting almost simultaneously.

  At this time, the ratio of the amount of refill water from the replenishing water channel 22 and the amount of water from the jet tank cleaning water supply port 50 to the jet tank 14 of cleaning water is in the range of 0.3 to 0.45. For example, the amount of refill water is 1.7 (l), and the amount of water from the jet tank washing water supply port 50 is 4.7 (l).

Next, the function and effect of the first embodiment of the present invention will be described.
First, in the first embodiment of the present invention, the rim tank 16 is disposed inside the jet tank 14, and cleaning water is supplied to the rim tank 16 from a water supply pipe 48. The rim tank 16 is provided with a jet tank cleaning water supply port 50 for overflowing the cleaning water from the rim tank 16 and supplying the cleaning water to the jet tank 14. The jet tank cleaning water supply port 50 is connected to a jet tank water conduit 52 extending substantially along the outer wall of the rim tank 16 that guides the cleaning water to the jet tank 14, and the lower end of the water conduit 52 is washed in the jet tank 14. It is located below the residual water level (DWL) after draining water.

  According to such a configuration, the cleaning water flows from the jet tank cleaning water supply port 50 to the jet tank water conduit 52, and the wash water overflowing from the rim tank 16 flows along the water conduit 52 due to its viscosity or surface tension. And it descends toward the bottom of the jet tank 14 without leaving the water conduit 52.

  And since the lower end of the water conduit 52 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14, the wash water overflowing from the rim tank 16 Instead of splashing water like “bashabasha” on the surface of the water, it will smoothly land on the wash water in the jet tank 14. Therefore, the washing water does not directly hit the surface of the washing water in the tank, and the landing sound of the washing water from the rim tank 16 to the jet tank 14 can be suppressed and water can be stored in the jet tank 14.

  In addition, since the jet tank conduit 52 extends substantially along the outer wall of the rim tank 16, there is almost no space in the width direction in the jet tank 14. Therefore, the water can be stored in a space-saving manner without directly hitting the surface of the cleaning water in the tank.

  Next, the jet tank cleaning water supply port 50 is formed by being cut out in a concave shape downward from the upper edge of the jet tank 14 in a side view and concave inward of the rim tank 16 in a plan view. Is formed. The jet tank water conduit 52 is configured such that a concave portion in plan view of the jet tank cleaning water supply port 50 extends downward. Accordingly, the water in the rim tank 16 can smoothly overflow into the jet tank cleaning water supply port 50.

  Next, since the jet tank cleaning water supply port 50 has a rectangular shape in which the corner portion 50d is formed in an R shape in plan view, the water in the rim tank 16 is supplied to the jet tank cleaning water supply port. It can overflow to 50 smoothly.

  Next, the jet tank cleaning water supply port 50 is configured by a curved surface 50e that protrudes sideways and obliquely upward. The jet tank cleaning water supply port 50 is formed in a curved surface having a curved cross section, and the normal of the curved surface portion is directed from the top to the side as it goes from the top to the bottom in the cross section. It is composed of a curved surface that changes so as to be inclined. Therefore, when the water in the rim tank 16 overflows from the jet tank cleaning water supply port 50, the cleaning water can flow smoothly along the curved surface 50e by viscosity or surface tension without splashing. Further, since the curved curved surface 50e has an R-shaped cross section, the cleaning water in the rim tank 16 more reliably flows smoothly from the jet tank cleaning water supply port 50 along the curved surface 50e. I can do it.

  Next, the rim tank 16 is disposed inside the jet tank 14, and cleaning water is supplied to the rim tank 16 from a water supply pipe 48. When the cleaning water level of the jet tank 14 exceeds a predetermined level, The water is stopped. In the rim tank 16, a replenishment water pipe 22 for supplying refill water to the bowl portion 4 of the toilet body 1 and a jet tank cleaning for overflowing the cleaning water from the rim tank 16 and supplying the cleaning water to the jet tank 14. A water supply port 50 is provided. When cleaning water is supplied from the water supply pipe 48 to the rim tank 16 and the cleaning water level in the rim tank 16 exceeds a predetermined water level, refill water is supplied from the replenishing water pipe 22 to the bowl portion 4 and from the jet tank cleaning water supply port 50. Washing water is supplied to the jet tank 14.

  Accordingly, the refill water can be supplied by overflow from the makeup water pipe 22, and a conventional makeup water pipe structure in which the water supply valve and the overflow pipe are communicated with each other is not required. Therefore, the arrangement of components in the rim tank 16 can be simplified. Space can be created in the rim tank 16. Further, since the water supply pipe 48 is not directly connected to the makeup water pipe 22, when supplying refill water, it is difficult to be affected by fluctuations in the water supply pressure of the water supply pipe 48, and the amount of auxiliary water supplied from the auxiliary water pipe is kept substantially constant. I can do it. The auxiliary water pipe and the jet tank cleaning water supply port are divided into one and the left divided into two at the center line in the plan view of the cleaning water tank (see FIG. 2), and are arranged at close positions, so the rim tank is attached to the jet tank. Even if an error occurs in the position, the refill water supply amount and the cleaning water supply amount to the first tank can be accurately adjusted.

Further, since the air guide passage 20 is used as the makeup water pipe 22, it is not necessary to newly provide a refill water passage in the toilet body, and the space can be used effectively. Moreover, since it is not necessary to provide the toilet body 1 with a plurality of passages, the manufacturing cost of the toilet body 1 can be reduced.
Here, the refill water supply by the conventional thin tube has a small diameter and a squeezing sound is generated by the supply water pressure, but this time the squeezing sound is reduced due to the refill water supply caused by overflowing from the replenishment water pipe.

  In addition, since the water supply from the jet tank cleaning water supply port 50 to the jet tank 14 is started at the same time as the cleaning water flows into the replenishing water channel 22, the respective water amounts can be adjusted with high accuracy.

Next, a flush water tank structure of a flush toilet according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a perspective view showing a rim tank according to the second embodiment of the present invention, FIG. 11 is a side view of the rim tank according to the second embodiment of the present invention as seen from the side, and FIG. FIG. 13 is a plan view of the rim tank according to the second embodiment as seen from above, and FIG. 13 is a cross-sectional view taken along the line III-III of FIG.
The configuration of the flush toilet according to the second embodiment is the same as that of the first embodiment. In the second embodiment, the configurations of the jet tank cleaning water supply port 50 and the jet tank conduit 52 are different. Here, the description about the same structure as 1st Embodiment is abbreviate | omitted, and a different characteristic part is demonstrated.

As shown in FIG. 10, the rim tank 16 has a jet tank cleaning water supply port 150 formed by cutting out a part of the peripheral edge thereof. As shown in FIGS. 10 and 11, the jet tank cleaning water supply port 150 is cut out in a substantially rectangular shape in a side view, and the lower edge 150a (see FIG. 12) of the space is shown in FIG. It is at the position of the line indicated by L ₀ . The lower edge, because it is in another position lower than the peripheral portion around the Rimutanku 16, the washing water Rimutanku 16 rises to the line indicated by L ₀ in FIG. 3, the washing water the jet tank washing water It overflows from the water supply port 150. Then, water supply to the jet tank 14 is performed.

  Further, as shown in FIG. 12, the jet tank cleaning water supply port 150 is formed to be concave from the peripheral edge of the rim tank 16 toward the inside of the rim tank 16 in a plan view. In the present embodiment, the concave portion 150b is formed in a substantially rectangular shape.

  Next, as shown in FIG. 13, a jet tank conduit 152 is formed below the lower end 150 a of the jet tank cleaning water supply port 150. As shown in FIGS. 10 and 12, the jet tank conduit 152 has a configuration in which a portion 150 b formed in a concave shape in plan view of the jet tank cleaning water supply port is extended downward. The jet tank conduit 152 extends downward along the outer wall of the rim tank 16. The lower end of the jet tank conduit 152 is positioned below the residual water level (DWL) after draining the wash water stored in the jet tank 14.

  Here, in the second embodiment, as shown in FIG. 10 and FIG. 13, a plate-like member 154 that covers the jet tank cleaning water supply port 150 and extends downwardly away from the jet tank cleaning water supply port 150 is provided. Is provided. The plate-like member 154 has a lower end portion (inclined portion) 154 a that is inclined toward the side surface portion of the rim tank 16.

In the second embodiment, the wash water that has collided with the plate-like member 154 flows toward the jet tank conduit 152 that is a part of the wall surface of the rim tank 16 through the inclined portion 154a. The washing water that has flowed in this way is formed so as to flow downward along the jet tank conduit 152 of the rim tank 16.
The plate-like member 154 may be entirely inclined so that the washing water overflowing from the rim tank 16 flows toward the jet tank water conduit 152 that is a part of the wall surface of the rim tank 16.

Next, the function and effect of the second embodiment of the present invention will be described.
First, the washing water overflowing from the jet tank washing water supply port 150 is caused to flow toward the jet tank water conduit 152 by the plate-like member 154 and its inclined portion 154a. The tension flows downward through the jet tank conduit 152 without leaving the jet tank conduit 152. The lower end of the jet tank conduit 152 is positioned below the residual water level (DWL) after draining the wash water stored in the jet tank 14. Accordingly, the wash water overflowing from the rim tank 16 smoothly reaches the wash water in the jet tank 14.
Further, since only such a plate-like member 154 is provided, the cleaning water overflowing from the rim tank 16 can be smoothly landed on the cleaning water in the jet tank 14 at a simple and low cost.

Next, a cleaning water tank structure according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 14 is a perspective view illustrating a jet tank cleaning water supply port and a jet tank conduit for a rim tank according to a third embodiment of the present invention, and FIG. 15 is a jet tank cleaning water for a rim tank according to a third embodiment of the present invention. It is a side view which shows a water supply opening and a jet tank conduit.
The configuration of the flush toilet according to the third embodiment is the same as that of the first embodiment. In the third embodiment, the configurations of the jet tank cleaning water supply port 50 and the jet tank conduit 52 are different. Here, the description about the same structure as 1st Embodiment is abbreviate | omitted, and a different characteristic part is demonstrated.

  As shown in FIGS. 14 and 15, a rim tank (not shown) is formed with a jet tank cleaning water supply port 250 in which a part of the peripheral edge thereof is cut out. The jet tank cleaning water supply port 250 is provided with a rectifying member for cleaning water overflowing from the rim tank 16, that is, a plurality of slits 254.

  Next, a jet tank conduit 252 is formed below the lower end portion 250 c of the jet tank cleaning water supply port 250. The jet tank water conduit 252 is configured such that a concave portion formed in a plan view of the jet tank cleaning water supply port 250 extends downward. The jet tank conduit 252 extends downward along the outer wall of the rim tank 16. The lower end of the jet tank conduit 252 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14.

Next, the function and effect of the third embodiment of the present invention will be described.
First, the amount of water flowing through the slits 254 of the cleaning water overflowing from the jet tank cleaning water supply port 250 is substantially uniform over the width direction of the jet tank cleaning water supply port 250 by the rectifying member 254. . That is, by providing the rectifying member 254, the washing water overflowing from the rim tank 16 flows with a uniform amount of water in the width direction without increasing or decreasing depending on the position in the width direction.

  Accordingly, the washing water overflowing with a uniform amount of water in the width direction is guided downward to the jet tank conduit 252 due to its viscosity or surface tension, turns downward, and leaves the jet tank conduit 252. Instead, it flows down along the jet tank conduit 252. Since the lower end of the jet tank conduit 252 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14, the wash water overflowing from the rim tank 16 is discharged from the jet tank 14. Smoothly lands in the wash water inside.

  The rectifying member 254 according to the third embodiment may be provided in the jet tank cleaning water supply port 50 according to the first embodiment described above or the jet tank cleaning water supply port 150 according to the second embodiment. Even in such a case, in addition to the effects of the first embodiment and the second embodiment described above, the wash water overflowing from the rim tank 16 can be more reliably guided to the jet tank conduits 52 and 152 without being separated. I can do it.

Next, a flush water tank structure of a flush toilet according to a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 16 is a perspective view showing a rim tank according to a fourth embodiment of the present invention, FIG. 17 is a side view of the rim tank according to the fourth embodiment of the present invention as viewed from the side, and FIG. FIG. 19 is a plan view of the rim tank according to the fourth embodiment as viewed from above, and FIG. 19 is a cross-sectional view taken along the line IX-IX in FIG.
The configuration of the flush toilet of the fourth embodiment is the same as that of the first embodiment. In the fourth embodiment, the configurations of the jet tank cleaning water supply port 50 and the jet tank conduit 52 are different. Here, the description about the same structure as 1st Embodiment is abbreviate | omitted, and a different characteristic part is demonstrated.

  In the fourth embodiment, as shown in FIGS. 16 to 19, a mesh member 354 is provided at the jet tank cleaning water supply port 350 so as to cover the jet tank cleaning water supply port, and the mesh member 354 is guided. It extends downward along the water channel 352.

First, as shown in FIG. 16, the rim tank 16 is formed with a jet tank cleaning water supply port 350 by notching a part of the peripheral edge portion thereof. As shown in FIGS. 16 and 17, the jet tank cleaning water supply port 350 is cut out in a substantially rectangular shape in a side view, and the lower edge portion 350a (see FIG. 19) of the space is shown in FIG. It is at the position of the line indicated by L ₀ . The lower edge, because it is in another position lower than the peripheral portion around the Rimutanku 16, the washing water Rimutanku 16 rises to the line indicated by L ₀ in FIG. 3, the jet tank cleaning water supply port 350 Overflowing from. Then, water supply to the jet tank 14 is performed.

  As shown in FIG. 18, the jet tank cleaning water supply port 350 is formed to be concave from the peripheral edge of the rim tank 16 toward the inside of the rim tank 16 in a plan view. In the present embodiment, the concave portion 350b is formed in a substantially rectangular shape.

  Next, as shown in FIGS. 16, 17, and 19, a jet tank conduit 352 is formed below the lower end portion 350 a of the jet tank cleaning water supply port 350. As shown in FIGS. 16 and 18, the jet tank water conduit 352 is configured by a downwardly extending portion 350 b formed in a concave shape in a plan view of the jet tank cleaning water supply port. The jet tank water conduit 352 extends downward along the outer wall of the rim tank 16. The lower end of the jet tank conduit 352 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14.

  Here, in the fourth embodiment, as described above, the mesh member 354 is provided so as to cover the jet tank cleaning water supply port 350. Further, the mesh member 354 extends downward over the jet tank conduit 352.

  In the fourth embodiment, the washing water that is about to overflow from the rim tank 16 hits the mesh member 354 provided in the jet tank washing water supply port 350, and the mesh member 354 is caused to change depending on the viscosity or surface tension of the washing water. Accordingly, it flows downward along the jet tank conduit 352.

  The mesh member 354 according to the fourth embodiment may be provided in the jet tank cleaning water supply port 50 according to the first embodiment described above or the jet tank cleaning water supply port 150 according to the second embodiment. Furthermore, the mesh member 354 may be provided in the jet tank conduit 52 according to the first embodiment or the conduit 152 according to the second embodiment. In these cases, in addition to the effects of the first and second embodiments described above, the wash water overflowing from the rim tank 16 can be more reliably guided to the jet tank conduits 52 and 152 without being separated. I can do it.

Next, the function and effect of the fourth embodiment of the present invention will be described.
First, the washing water overflowing from the jet tank washing water supply port 350 obtains a larger surface tension by the mesh member 354 and flows toward the jet tank conduit 352. Then, due to the viscosity or surface tension of the washing water, the water flows downward through the jet tank conduit 352 provided with the mesh member 354 without leaving the jet tank conduit 352. The lower end of the jet tank conduit 352 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14. Accordingly, the wash water overflowing from the rim tank 16 smoothly reaches the wash water in the jet tank 14.
As described above, according to the mesh member 354, the surface tension between the jet tank cleaning water supply port 350, the jet tank water conduit 352, and the mesh member 354 increases, so that the washing water overflowing from the rim tank 16 jumps out vigorously. The stored water in the jet tank 14 can be allowed to flow without the cleaning water being peeled off.

Next, a flush water tank structure of a flush toilet according to a fifth embodiment of the present invention will be described with reference to FIGS. 20 is a perspective view showing a rim tank according to a fifth embodiment of the present invention, FIG. 21 is a side view of the rim tank according to the fifth embodiment of the present invention as seen from the side, and FIG. FIG. 23 is a plan view of the rim tank according to the fifth embodiment viewed from above, and FIG. 23 is a cross-sectional view taken along line IV-IV in FIG.
The configuration of the flush toilet of the fifth embodiment is the same as that of the first embodiment. In the fifth embodiment, the configurations of the jet tank cleaning water supply port 50 and the jet tank conduit 52 are different. Here, the description about the same structure as 1st Embodiment is abbreviate | omitted, and a different characteristic part is demonstrated.

First, as shown in FIG. 20, the rim tank 16 has a jet tank cleaning water supply port 450 formed by cutting out a part of its peripheral edge. As shown in FIG. 20, the jet tank cleaning water supply port 450 is cut out in a substantially rectangular shape in a side view, and the lower edge 450a (see FIG. 23) of the space is L ₀ in FIG. It is in the position of the line shown. The lower edge, because it is in another position lower than the peripheral portion around the Rimutanku 16, the washing water Rimutanku 16 rises to the line indicated by L ₀ in FIG. 3, the jet tank cleaning water supply port 450 Overflowing from. Then, water supply to the jet tank 14 is performed.

  Next, as shown in FIGS. 20, 21, and 23, a guide plate 454 and a guide surface 456 for cleaning water overflowing from the rim tank 16 are formed in the jet tank cleaning water supply port 450. A circular hole 458 is formed at the center of the guide surface 456, and a hollow cylindrical member 452 is attached below the circular hole. The hollow cylindrical member 452 extends downward substantially parallel to the outer wall of the rim tank 16. The lower end of the hollow cylindrical member 452 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14.

Next, the effect of 5th Embodiment of this invention is demonstrated.
First, the cleaning water overflowing from the rim tank 16 flows into the space surrounded by the guide plate 454 and the guide surface 456, and the flowing cleaning water flows into the hollow cylindrical member 452 through the hole 458, and further, the hollow cylindrical member 452. It will flow downward along. Here, the lower end of the hollow cylindrical member 452 is located below the residual water level (DWL) after draining the wash water stored in the jet tank 14. Accordingly, the wash water overflowing from the rim tank 16 smoothly reaches the wash water in the jet tank 14.

  In the first to fifth embodiments described above, as a configuration in which the jet tank is provided in the rim tank, a tank cleaning water supply port and a water conduit may be formed as in each embodiment. Further, the rim tank and the jet tank may be integrally formed and the rim cleaning water storage area and the jet tank storage area may be separated, or the rim tank and the jet tank may be arranged in parallel. In the present embodiment, the refill water conduit is used in combination with the air conduit, but may be used in combination with the rim conduit, the zette conduit, and another conduit. Further, for example, the refill water is taken by the overflow water from the rim tank, but the refill may be taken by the overflow water from the jet tank. The refill opening may be outside the rim tank.

It is sectional drawing of the flush toilet bowl by embodiment of this invention. It is the top view which looked at the inside of the washing water tank by a 1st embodiment of the present invention from the upper part. It is sectional drawing of the washing water tank seen along the III-III line of FIG. 1 is a perspective view showing a rim tank according to a first embodiment of the present invention. It is the side view which looked at the rim tank by a 1st embodiment of the present invention from the side. It is the top view which looked at the rim tank by a 1st embodiment of the present invention from the upper part. It is sectional drawing seen along the VII-VII line of FIG. It is sectional drawing seen along the VIII-VIII line of FIG. It is sectional drawing seen along the IX-IX line of FIG. It is a perspective view which shows the rim tank by 2nd Embodiment of this invention. It is the side view which looked at the rim tank by 2nd Embodiment of this invention from the side. It is the top view which looked at the rim tank by a 2nd embodiment of the present invention from the upper part. It is sectional drawing seen along the III-III line of FIG. It is a perspective view which shows the jet tank washing water supply port and jet tank water conduit of the rim tank by 3rd Embodiment of this invention. It is a side view which shows the jet tank washing water supply port and jet tank water conduit of the rim tank by 3rd Embodiment of this invention. It is a perspective view which shows the rim tank by 4th Embodiment of this invention. It is the side view which looked at the rim tank by 4th Embodiment of this invention from the side. It is the top view which looked at the rim tank by 4th Embodiment of this invention from upper direction. It is sectional drawing seen along the IX-IX line of FIG. It is a perspective view which shows the rim tank by 5th Embodiment of this invention. It is the side view which looked at the rim tank by 5th Embodiment of this invention from the side. It is the top view which looked at the rim tank by a 5th embodiment of the present invention from the upper part. It is sectional drawing seen along the IV-IV line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 4 Bowl part 6 Drain trap conduit 8 Jet spout 10 Rim spout 12 Wash water tank 14 Jet tank 16 Rim tank 20 Air guide passage (supply water channel)
22 Air conduit (supply channel)
24 Air guide chamber (supply channel)
30 Jet drain valve 36 Rim drain valve 40 Ball tap 48 Water supply pipes 50, 150, 250, 350, 450 Jet tank cleaning water supply port 50e Curved curved surfaces 52, 152, 252 and 352 Jet tank conduit 452 Hollow cylindrical member

Claims (4)

A tank structure of a flush toilet having a water storage tank for storing cleaning water for cleaning the toilet body, and a first discharge port and a second discharge port for supplying cleaning water from the water storage tank to the toilet body. Because
The water storage tank stores a first tank that stores cleaning water for supplying cleaning water to the first discharge port, and a second tank that stores cleaning water for supplying cleaning water to the second discharge port. A tank,
The first tank is provided with a first drain valve for supplying and stopping washing water to the first discharge port,
The second tank is provided with a second drain valve for supplying and stopping washing water to the second discharge port,
Wash water is supplied to the second tank from a water supply pipe, and the wash water is stopped when the wash water level of the first tank exceeds a predetermined water level,
The second tank has a makeup water pipe for supplying refill water to the toilet body, and a supply of the washing water to the first tank by overflowing the washing water from the second tank. A first tank cleaning water supply port;
When wash water is supplied from the water supply pipe to the second tank and the water level of the second tank exceeds a predetermined water level, refill water is supplied from the make-up water pipe to the toilet body and the first tank. A flush toilet, wherein flush water is supplied to the first tank from a flush water supply port.   The first tank cleaning water supply port is provided at a peripheral portion of the second tank, and the makeup water pipe is disposed in the second tank at a position close to the first tank cleaning water supply port. Item 4. A flush toilet according to Item 1.   The flush toilet according to claim 1 or 2, wherein the makeup water pipe also serves as an air guide passage for injecting air into the trap portion of the toilet body.   The second tank is disposed inside the first tank, the second discharge port is located above the first discharge port, the first discharge port is a jet discharge port, The first tank is a jet tank that stores wash water supplied to the jet discharge port, the second discharge port is a rim discharge port, and the second tank is the wash water supplied to the rim discharge port. The flush toilet bowl according to any one of claims 1 to 3, which is a rim tank that stores water.

Images