JP5721575B2 - Toilet bowl cleaning device and flush toilet bowl - Google Patents

Description

  The present invention relates to a toilet bowl cleaning device and a flush toilet bowl.

  Patent Document 1 discloses a conventional toilet cleaning device. This toilet flushing apparatus includes a washing tank, a jet pump mechanism, a container, and a toilet water supply channel. The washing tank stores the washing water that has flowed in. The jet pump mechanism has an injection nozzle and a throat arranged at a position facing the injection nozzle with a gap, and is arranged so as to be submerged in the cleaning water stored in the cleaning tank. The container surrounds the jet pump mechanism and is open at the top. The upper end of the container is formed at a position lower than the maximum water level of the cleaning water stored in the cleaning tank. Further, the container has an opening penetrating the side surface and an opening / closing lid for opening and closing the opening. The toilet water supply channel connects the jet pump mechanism and the toilet body.

  When this toilet flushing device injects the washing water from the jet nozzle, it draws the washing water in the container and flows into the throat. For this reason, the wash water supplied to the toilet body through the toilet water supply channel is added with the wash water drawn into the wash water sprayed from the spray nozzle, so the flow rate (the amount of water supplied per unit time, the same applies hereinafter). Can be more.

  Moreover, this toilet bowl washing | cleaning apparatus can increase / decrease the amount of washing water supplied to a toilet bowl main body by opening and closing the opening which penetrated the side surface of the container with an opening-and-closing lid. That is, in a state where the opening penetrating the side surface of the container is opened, the cleaning water stored outside the container can flow into the container through the opening. For this reason, the wash water stored outside the container can also be drawn in by the jet pump mechanism, and can be supplied to the toilet body through the toilet water supply channel.

  On the other hand, in the state where the opening penetrating the side of the container is closed by the opening / closing lid, if the water level of the cleaning water in the cleaning tank becomes equal to the upper end of the container, the cleaning water outside the container will flow into the container at that time. I can't. For this reason, after the water level of the washing water in the washing tank becomes equal to the upper end of the container, only the washing water in the container is drawn by the jet pump mechanism and supplied to the toilet body through the toilet water supply channel. In this way, it is better to supply cleaning water to the toilet body with the opening closed with an opening / closing lid than when supplying cleaning water to the toilet body with the opening penetrating the side of the container open. The amount of clean water supplied to the water is reduced. For this reason, this toilet bowl washing | cleaning apparatus can perform large washing | cleaning and small washing | cleaning.

JP 2004-156382 A

  However, in the toilet bowl cleaning apparatus disclosed in Patent Document 1, in order to draw the cleaning water in the cleaning tank by the jet pump mechanism, the jet pump mechanism must be submerged in the cleaning water in the cleaning tank. For this reason, in order to effectively use the wash water stored in the wash tank for toilet flushing, the jet pump mechanism must be disposed near the bottom surface of the wash tank.

  When the jet pump mechanism is arranged near the bottom surface of the washing tank, and the washing tank is arranged at a position lower than the upper surface of the toilet body, the toilet water supply channel that connects the jet pump mechanism and the toilet body becomes longer, and the toilet bowl The ascending slope of the water supply channel may be steep. If the toilet water supply channel becomes long or the ascending slope of the toilet water supply channel becomes steep, the pressure loss of the wash water passing through the toilet water supply channel will increase, and the flow rate of the wash water supplied to the toilet body will decrease. For this reason, toilet cleaning may be insufficient.

  The present invention has been made in view of the above-described conventional situation, and has a degree of freedom in installation position, and a toilet bowl cleaning device that can perform toilet bowl cleaning well, and a flush toilet equipped with the toilet bowl cleaning device Providing is an issue to be solved.

The toilet bowl cleaning device of the present invention is a toilet bowl cleaning apparatus that supplies cleaning water to the toilet bowl body,
A first tank in which the wash water flows in and stores the wash water that flows in;
An inlet through which washing water flows from the lower part of the first tank, and an outlet provided above the inlet, communicating with the toilet body, and when supplying washing water to the toilet body, A second tank that maintains the wash water in a full state under the influence of the pressure of the wash water in the first tank when no air flows from the first tank through the inlet;
A jet pump mechanism having an injection nozzle that is disposed in a position facing the outlet in the second tank with a gap, and injects cleaning water toward the outlet;
A toilet water supply channel communicating the outlet and the toilet body is provided.

  In this toilet bowl cleaning device, the inlet of the second tank is provided so that the cleaning water can flow from the lower part of the first tank. For this reason, air does not flow into the second tank from the first tank via the inlet until the water level of the cleaning water in the first tank drops below the inlet of the second tank. Under the influence of the water pressure of the wash water in the first tank, the second tank can maintain the wash water in a full state. That is, most of the cleaning water in the first tank can flow into the second tank. Since the wash water that has flowed into the second tank is supplied to the toilet body by the jet pump mechanism through the toilet water supply channel, a large flow of wash water can be supplied to the toilet body. Thus, this toilet bowl washing | cleaning apparatus can perform toilet bowl washing | cleaning favorably using most of the wash water stored in the 1st tank and the 2nd tank.

  Further, the second tank can be maintained in a full state with the washing water until most of the washing water in the first tank flows into the second tank. For this reason, even if the jet pump mechanism is arranged at the upper part of the second tank, the jet pump mechanism draws the cleaning water in the second tank until most of the cleaning water in the first tank flows into the second tank. Can be sent to the toilet waterway.

  Since the jet pump mechanism can be arranged in the upper part of the second tank, even when the toilet flushing device (the first tank and the second tank) is arranged at a position lower than the upper surface of the toilet body, the toilet water supply channel is long. Moreover, since the ascending slope of the toilet bowl water supply channel does not become steep, the pressure loss of the washing water passing through the toilet bowl water supply channel can be reduced. For this reason, a large flow of washing water can be supplied to the toilet body. Moreover, this toilet bowl washing | cleaning apparatus can supply most flush water stored in the 1st tank and the 2nd tank to the toilet bowl main body.

  Therefore, the toilet bowl cleaning device of the present invention has a degree of freedom in installation position and can perform toilet bowl cleaning satisfactorily.

  The outlet may be provided in an upper part of the second tank, and the injection nozzle may be provided in an upper part of the second tank. In this case, even if the toilet bowl cleaning device is disposed at a position lower than the upper surface of the toilet bowl body, a large flow of flush water can be supplied to the toilet bowl body by the jet pump mechanism. For this reason, by providing this toilet bowl cleaning device, a low silhouette flush toilet bowl can be realized.

  The spray nozzle may spray wash water until air flows into the second tank from the first tank through the inlet and the water level in the second tank decreases. In this case, when air flows into the second tank from the first tank through the inlet, the water level in the second tank rapidly decreases, and the jet pump mechanism can draw the cleaning water in the second tank. Therefore, the spray nozzle finishes spraying the cleaning water. When the supply pressure of the cleaning water to the injection nozzle changes, the flow rate of the cleaning water to be injected changes, so the flow rate of the cleaning water in the second tank drawn into the jet pump mechanism also changes. As described above, when the supply pressure of the washing water to the injection nozzle fluctuates, the flow rate of the washing water supplied to the toilet main body fluctuates. Can be constant.

  That is, the amount of cleaning water drawn into the jet pump mechanism until the water level in the second tank decreases is equal to the amount of cleaning water stored outside the second tank and stored in the first tank. It is constant. When the jet pump mechanism draws a fixed amount of cleaning water, if the flow rate of cleaning water sprayed from the spray nozzle is small, the ejection time becomes long, and if the flow rate of cleaning water sprayed from the spray nozzle is large, the spray time becomes short. . Thus, in order for the jet pump mechanism to draw in a constant amount of cleaning water, the amount of cleaning water ejected from the ejection nozzle also ejects a substantially constant amount of water. For this reason, even if the flow rate of the wash water supplied from the injection nozzle fluctuates and the flow rate of the wash water in the second tank to be drawn fluctuates, the flow rate of the wash water supplied to the toilet bowl fluctuates. The amount of washing water supplied to the toilet body by the device can be made substantially constant.

  The water level at which air starts to flow into the second tank from the first tank through the inlet may be changed. In this case, the amount of washing water supplied to the toilet body can be changed by changing the water level at which air starts to flow into the second tank from the first tank through the inlet. In other words, if the water level at which air starts to flow into the second tank from the first tank through the inlet is lowered, the time for the water level in the second tank to decrease is delayed, and the jet pump mechanism is moved into the second tank. The wash water can be drawn in for a long time. For this reason, the amount of washing water supplied to the toilet bowl body by the toilet bowl cleaning device can be increased. On the other hand, if the water level at which air starts to flow into the second tank from the first tank through the inlet is increased, the water level of the wash water in the second tank decreases earlier, and the jet pump mechanism is moved into the second tank. The cleaning water cannot be drawn in early. For this reason, the amount of washing water supplied to the toilet bowl body by the toilet bowl cleaning device can be reduced. Thus, since this toilet bowl washing | cleaning apparatus can change easily the amount of washing water supplied to a toilet bowl main body, it can respond easily to the multiple types of toilet bowl main body from which the toilet bowl washing water volume differs.

  The communication path which connects the lower part of the said 1st tank and the said injection nozzle, and the water supply mechanism which is provided in this communication path and supplies the washing water stored in the said 1st tank to the said injection nozzle may be provided. In this case, since the cleaning water is supplied to the injection nozzle using the water supply mechanism, the stable high water pressure cleaning water can be supplied to the injection nozzle. For this reason, the jet pump mechanism can strongly draw the wash water in the second tank, and can stably supply a large amount of wash water to the toilet body via the toilet water supply channel.

  The flush toilet of the present invention is characterized by comprising a toilet body and the toilet cleaning device. In this case, this flush toilet bowl has a degree of freedom in the installation position of the toilet bowl cleaning device as described above, and can perform toilet bowl cleaning well.

It is the schematic which shows the flush toilet bowl of Example 1. FIG. It is the schematic which shows the toilet bowl washing | cleaning state of the flush toilet bowl of Example 1. FIG. In the flush toilet bowl of Example 1, it is the schematic which shows the state which complete | finishes supply of the wash water to a toilet bowl main body. In the flush toilet bowl of Example 1, it is the schematic which shows the state which stores wash water in the 1st tank and the 2nd tank. It is the schematic which shows the toilet bowl washing | cleaning apparatus of Example 2. FIG. It is the schematic which shows the toilet bowl washing | cleaning apparatus of Example 3. 6 is a schematic view showing a flush toilet of Example 4. FIG.

  Embodiments 1 to 4 embodying a flush toilet equipped with the toilet cleaning device of the present invention will be described with reference to the drawings.

<Example 1>
As shown in FIG. 1, the flush toilet of Example 1 includes a toilet main body 10 and a toilet cleaning device 20 that supplies cleaning water to the toilet main body 10. The toilet body 10 includes a toilet bowl 11 and a toilet drainage channel 12 communicating with the downstream side of the toilet bowl 11.

  The toilet bowl cleaning device 20 is disposed behind the toilet bowl body 10 and at a position lower than the upper surface of the toilet bowl body 10. For this reason, this flush toilet has a low silhouette. The toilet cleaning device 20 includes a first tank 21, a second tank 22, a jet pump mechanism 23, and a toilet water supply channel 24. Wash water flows into the first tank 21 through a tank water supply path 25 that communicates with a water pipe that is a water supply source. The tank water supply path 25 has a tank water supply valve 25V provided at the downstream end. The first tank 21 can store the wash water that has flowed in via the tank water supply channel 25.

  The second tank 22 is disposed in the first tank 21. The second tank 22 has an inflow port 22 </ b> A that opens downward near the lower portion in the first tank 21. The second tank 22 has an outlet 22B at the upper end. In the second tank 22, a branch water supply path 27 for supplying cleaning water to an injection nozzle 26 described later is inserted in a watertight manner from the upper surface. The opening area of the outlet 22B is formed larger than the opening area of the injection port 26A of the injection nozzle 26.

  The toilet water supply channel 24 communicates the outlet 22 </ b> B and the toilet body 10. The toilet water supply channel 24 continuously extends from the opening edge of the outlet 22B. For this reason, the flow passage area of the toilet water supply channel 24 is formed larger than the opening area of the injection port 26 </ b> A of the injection nozzle 26. Further, the toilet water supply channel 24 has an ascending slope that extends obliquely upward to reach the upper rear end of the toilet body 10, and the water outlet 24 </ b> A at the downstream end is formed on the upper peripheral edge of the toilet bowl 11 of the toilet body 10. It arrange | positions so that washing water may be discharged along. For this reason, the wash water discharged from the water outlet 24 </ b> A of the toilet water supply channel 24 flows in one direction along the surface of the toilet bowl 11, and can form a swirling flow in the toilet bowl 11.

  Moreover, since the outflow port 22B of the 2nd tank 22 is formed in the upper end part of the 2nd tank 22, the toilet bowl water supply path 24 does not become long, and the toilet bowl water supply path 24 does not go up steeply. For this reason, the pressure loss of the washing water passing through the toilet water supply channel 24 can be reduced.

  The jet pump mechanism 23 has an injection nozzle 26 that is disposed in the second tank 22 at a position facing the outlet 22B of the second tank 22 with a gap. The jet pump mechanism 23 includes an outlet 22B of the second tank and an injection nozzle 26. The spray nozzle 26 is provided in the upper part of the second tank 22 and directs the wash water to the outlet 22 </ b> B so that the sprayed wash water flows along the toilet water supply channel 24. As described above, the jet pump mechanism 23 is disposed on the upper portion of the second tank 22. Wash water flows into the injection nozzle 26 via a branch water supply path 27 that branches off the tank water supply path 25. The branch water supply path 27 has an injection nozzle valve 27V.

  Next, the toilet cleaning process of the flush toilet having such a configuration will be described.

  In the standby state before toilet flushing, as shown in FIGS. 1 and 4, the wash water that has flowed from the tank water supply channel 25 flows into the first tank 21. Further, the washing water also flows into the second tank 22 from the lower part of the first tank 21 through the inlet 22A of the second tank 22. In this way, the flush toilet is in a standby state before flushing the toilet with the flush water stored in the first tank 21 and the second tank 22. In this standby state, the tank water supply valve 25V and the injection nozzle valve 27V are closed.

  Moreover, in the standby state before toilet flushing, since the opening area of the downstream end of the toilet water supply channel 24 is smaller than the opening area opened above the first tank 21, the water pressure of the washing water in the first tank 21 Wash water flows from the second tank 22 into the toilet water supply channel 24 communicating with the downstream side. That is, the second tank 22 is full of washing water, and the washing water level in the toilet water supply channel 24 rises to a position higher than the washing water level in the first tank 21 outside the second tank 22. ing.

  Next, when toilet flushing is started, as shown in FIG. 2, the injection nozzle valve 27V is opened, the cleaning water is injected from the injection port 26A of the injection nozzle 26, and the cleaning water in the second tank 22 is drawn. . The wash water in the second tank 22 drawn into the wash water jetted from the jet port 26 </ b> A of the jet nozzle 26 merges and is supplied to the toilet body 10 through the outlet 22 </ b> B and the toilet water supply channel 24. At this time, the wash water having a flow rate of about 3 to 4 times the flow rate of the wash water ejected from the ejection port 26 </ b> A of the ejection nozzle 26 can be supplied to the toilet body 10.

  In this toilet bowl cleaning device 20, since the jet pump mechanism 23 is disposed on the upper part of the second tank 22, the toilet bowl water supply path 24 does not become long, and the ascending gradient of the toilet bowl water supply path 24 does not become steep. For this reason, the pressure loss of the wash water passing through the toilet water supply channel 24 can be reduced, and the toilet bowl cleaning device 20 can supply a large flow of flush water to the toilet body 10.

  The washing water in the second tank 22 is drawn by the jet pump mechanism 23 and a large flow of washing water starts to be supplied to the toilet body 10, and at the same time, the washing water in the lower part of the first tank 21 flows into the second tank 22. Since the water flows into the second tank 22 through the inlet 22A, the water level of the cleaning water in the first tank 21 decreases. At this time, since the wash water in the second tank 22 is affected by the pressure of the wash water in the first tank 21, the inside of the second tank 22 is maintained in a full state with the wash water. For this reason, the jet pump mechanism 23 can maintain a state of being submerged in the cleaning water in the second tank 22. Therefore, the jet pump mechanism 23 can continue to draw the wash water in the second tank 22 and can continue to supply a large flow of wash water to the toilet body 10.

  If the toilet flushing is further continued, as shown in FIG. 3, the level of the washing water in the first tank 21 is further lowered, and the level of the washing water in the first tank 21 is lowered from the inlet 22 </ b> A of the second tank 22. To do. Then, air flows into the second tank 22 from the first tank 21 through the inlet 22A of the second tank 22, and the level of the cleaning water in the second tank 22 is lowered at a stretch. For this reason, the jet pump mechanism 23 is exposed in the second tank 22, and the jet pump mechanism 23 cannot draw the cleaning water.

  The toilet bowl cleaning device 20 has a water level sensor (for example, a float sensor) (not shown) that detects the water level in the second tank 22, and when this water level sensor detects a drop in the water level in the second tank 22, an injection is performed. The nozzle valve 27V is closed. In this way, the supply of the washing water to the toilet body 10 is finished. That is, the injection nozzle 26 injects wash water until air flows from the first tank 21 into the second tank 22 through the inlet 22A and the water level in the second tank 22 decreases.

  When the supply water pressure of the cleaning water to the injection nozzle 26 changes, the flow rate of the cleaning water to be injected changes, so the flow rate of the cleaning water in the second tank 22 drawn into the jet pump mechanism 23 also changes. Thus, when the supply pressure of the washing water to the injection nozzle 26 fluctuates, the flow rate of the washing water supplied to the toilet main body 10 fluctuates, but the toilet flushing device 20 of this flush toilet is attached to the toilet main body 10. The amount of cleaning water supplied can be made substantially constant.

  That is, the amount of cleaning water drawn into the jet pump mechanism 23 until the water level in the second tank 22 decreases is the amount of cleaning water stored outside the second tank 22 and stored in the first tank 21. Since they are equal, they are substantially constant. When the jet pump mechanism 23 draws a fixed amount of cleaning water, if the flow rate of cleaning water injected from the injection port 26A of the injection nozzle 26 is small, the injection time becomes longer and the cleaning water injected from the injection port 26A of the injection nozzle 26 If there is much flow volume of, the ejection time will become short. Thus, in order for the jet pump mechanism 23 to draw in a constant amount of cleaning water, the amount of cleaning water ejected from the ejection port 26 </ b> A of the ejection nozzle 26 also ejects a substantially constant amount of water. For this reason, the flow rate of the wash water supplied from the injection port 26A of the injection nozzle 26 varies, and the flow rate of the wash water in the second tank 22 to be drawn fluctuates. Even if it fluctuates, the amount of wash water supplied to the toilet body 10 by the toilet bowl cleaning device 20 can be made substantially constant.

  Thereafter, as shown in FIG. 4, the tank water supply valve 25 </ b> V is opened, the cleaning water is caused to flow into the first tank 21 from the tank water supply passage 25, and the cleaning water is stored in the first tank 21 and the second tank 22. By doing so, as shown in FIG. 1, the flush toilet is returned to the standby state before toilet flush. In this way, one cycle of the toilet bowl cleaning process is completed.

  In this flush toilet, the toilet flushing device 20 is disposed behind the toilet body 10 at a position lower than the upper surface of the toilet body 10 to realize a low silhouette, and the jet pump mechanism 23 is disposed above the second tank 22. Since the toilet water supply channel 24 is not lengthened and the ascending slope of the toilet water supply channel 24 does not become steep, the pressure loss of the washing water in the toilet water supply channel 24 is reduced, and the toilet body 10 has a large flow rate. The cleaning water can be supplied. Further, the toilet flushing device 20 allows the jet pump mechanism 23 to draw the flush water in the second tank 22 until most of the flush water in the first tank 21 flows into the second tank 22, and the toilet body 10 can be supplied with a large flow of washing water. That is, this flush toilet bowl can use most of the wash water stored in the first tank 21 and the second tank 22.

  Therefore, the flush toilet of Example 1 has the freedom of the installation position of the toilet cleaning device 20, and can perform toilet cleaning well.

<Example 2>
In the flush toilet of Example 2, as shown in FIG. 5, the second tank 31 of the toilet bowl cleaning device 30 forms a side surface 31A in a bellows shape, and the second tank 31 extends from the first tank 21 through the inlet 31A. Unlike the first embodiment, the water level at which the inflow of air can be changed. Other configurations are the same as those of the first embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

  The flush toilet 30 of the flush toilet includes a water level at which air starts to flow into the second tank 31 from the first tank 21 through the inlet 31A by expanding and contracting the bellows portion of the side surface 31B of the second tank 31. Therefore, the amount of washing water supplied to the toilet body 10 can be changed.

  That is, as shown in FIG. 5A, the bellows portion of the side surface 31 </ b> B of the second tank 31 is extended, and the inlet 31 </ b> A of the second tank 31 is disposed below the first tank 21. As a result, the water level at which air starts to flow into the second tank 31 from the first tank 21 through the inlet 31A can be lowered. Then, after the toilet bowl cleaning is started, the timing of lowering the level of the washing water in the second tank 31 can be delayed, so that the jet pump mechanism 23 can draw the washing water in the second tank 31 for a long time. . For this reason, the amount of washing water supplied to the toilet body 10 by the toilet bowl cleaning device 3 can be increased. That is, of the wash water stored in the first tank 21 and the second tank 31, the amount of water stored in the first tank 21 above the inflow port 31A and outside the second tank 31 (FIG. 5A The amount of water corresponding to the X portion) can be supplied to the toilet body 10.

  On the other hand, as shown in FIG. 5B, the bellows portion of the side surface 31B of the second tank 31 is contracted to bring the inlet 31A of the second tank 31 to a high position. Thereby, the water level at which air starts to flow into the second tank 31 from the first tank 21 via the inflow port 31A can be increased. Then, after the toilet bowl cleaning is started, the level of the cleaning water in the second tank 31 is rapidly lowered, so that the jet pump mechanism 23 cannot draw the cleaning water in the second tank 31 at an early stage. For this reason, the amount of wash water supplied to the toilet body 10 by the toilet bowl cleaning device 30 can be reduced. That is, of the wash water stored in the first tank 21 and the second tank 31, the amount of water stored in the first tank 21 above the inlet 31A and outside the second tank 31 (FIG. 5B The amount of water corresponding to the Y portion shown in FIG. 3) (a smaller amount of water than when the bellows portion of the side surface 31B of the second tank 31 is extended) can be supplied to the toilet body 10.

  Thus, since the toilet flushing apparatus 30 of the flush toilet bowl of Example 2 can change easily the amount of the wash water supplied to the toilet bowl main body 10, the toilet bowl main body 10 of multiple types from which the toilet bowl wash water quantity differs is different. Can be easily accommodated.

<Example 3>
As shown in FIG. 6, the flush toilet of the third embodiment is different from the first embodiment in that the flush toilet is a toilet cleaning device 40 that can replace a plurality of second tanks 41, 42 having different vertical dimensions of the side surfaces. To do. Other configurations are the same as those of the first embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

  This toilet flushing device 40 for flush toilets replaces the second tanks 41 and 42 having different vertical lengths on the side surfaces, thereby allowing air from the first tank 21 to the second tanks 41 and 42 through the inlets 41A and 42A. Since the water level at which water starts to flow can be changed, the amount of washing water supplied to the toilet body 10 can be changed.

  That is, as shown in FIG. 6A, the inlet 41A of the second tank 41 is disposed below the first tank 21 by attaching the second tank 41 having a long side dimension in the first tank 21. To do. Thereby, the water level at which air starts to flow into the second tank 41 from the first tank 21 through the inlet 41A can be lowered. Then, after the toilet bowl cleaning is started, the timing of lowering the level of the washing water in the second tank 41 can be delayed, so that the jet pump mechanism 23 can draw the washing water in the second tank 41 for a long time. . For this reason, the amount of wash water supplied to the toilet body 10 by the toilet bowl cleaning device 40 can be increased. That is, of the wash water stored in the first tank 21 and the second tank 41, the amount of water stored in the first tank 21 above the inlet 41A and outside the second tank 41 (FIG. 6A). The amount of water corresponding to the X portion) can be supplied to the toilet body 10.

  On the other hand, as shown in FIG. 6 (B), the second tank 42 having a short vertical dimension on the side surface is mounted in the first tank 21 to bring the inlet 42A of the second tank 42 to a high position. Thereby, the water level at which air starts to flow into the second tank 42 from the first tank 21 through the inlet 42A can be increased. Then, after the toilet bowl cleaning is started, the level of the cleaning water in the second tank 42 is quickly lowered, so that the jet pump mechanism 23 cannot draw the cleaning water in the second tank 42 at an early stage. For this reason, the amount of washing water supplied to the toilet body 10 by the toilet bowl cleaning device 40 can be reduced. That is, of the wash water stored in the first tank 21 and the second tank 42, the amount of water stored in the first tank 21 above the inflow port 42A and outside the second tank 42 (FIG. 6B The amount of water corresponding to the Y portion shown in ()) can be supplied to the toilet body 10 (the amount of water is smaller than that in the case where the second tank 41 having a long vertical side surface is attached).

  Thus, since the toilet flushing device 40 of the flush toilet bowl of Example 3 can change easily the amount of the wash water supplied to the toilet bowl main body 10, the toilet bowl main body 10 of multiple types from which the toilet bowl wash water quantity differs is different. Can be easily accommodated.

<Example 4>
As shown in FIG. 7, the flush toilet of Example 4 is provided with a communication passage 28 in which a toilet cleaning device 50 communicates the lower part of the first tank 21 and the injection nozzle 26, and the communication passage 28. The present embodiment is different from the first embodiment in that it includes a pump P that is a water supply mechanism that supplies cleaning water stored in the tank 21 to the injection nozzle 26. Other configurations are the same as those of the first embodiment, and the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

  In the flush toilet, in the toilet flushing process, when toilet flushing is started, the pump P is driven to inject the flush water stored in the first tank 21 from the ejection port 26A of the ejection nozzle 26, and in the second tank 22 Draw wash water. Since cleaning water is supplied to the injection nozzle 26 using the pump P, stable high water pressure cleaning water can be supplied to the injection nozzle 26. For this reason, the jet pump mechanism 23 can strongly draw the wash water in the second tank 22, and can stably supply a large flow of wash water to the toilet body 10 via the toilet water supply channel 24.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the first to fourth embodiments, the second tank is arranged in the first tank, but the first tank and the second tank are arranged next to each other, and a connection path for connecting the respective lower portions is provided. Also good.
(2) In Examples 1 to 4, the second tank has a larger flow area than the toilet water supply channel, but the flow area of the second tank may be the same as the flow area of the toilet water supply channel. .
(3) In Examples 1-4, although the outflow port is provided in the upper end part of the 2nd tank, and the toilet bowl water supply channel is connected, the outflow port should just be a position higher than an inflow port.
(4) In Examples 1 to 4, the toilet water supply channel is communicated with the upper part of the toilet bowl, and the wash water is discharged on the surface of the toilet bowl, but the water outlet at the downstream end of the toilet water supply channel is provided. You may make it provide in the lower end of a toilet bowl part, or the upstream end part of a toilet drainage channel, and to discharge washing water along a toilet drainage channel.
(5) In Examples 1 to 4, when the water level of the cleaning water in the first tank decreases from the inlet of the second tank, and the water level of the cleaning water in the second tank decreases, the cleaning water is supplied to the injection nozzle. However, when the level of the cleaning water in the first tank is above the inlet of the second tank, the supply of the cleaning water to the injection nozzle may be ended.

DESCRIPTION OF SYMBOLS 10 ... Toilet body 20, 30, 40, 50 ... Toilet washing apparatus 21 ... 1st tank 22, 31, 41, 42 ... 2nd tank 22A, 31A, 41A, 42A ... Inlet 22B ... Outlet 23 ... Jet pump mechanism 24 ... Toilet water supply passage 26 ... Injection nozzle 28 ... Communication passage P ... Pump (water supply mechanism)

Claims (6)

A toilet cleaning device for supplying cleaning water to the toilet body,
A first tank in which the wash water flows in and stores the wash water that flows in;
An inlet through which washing water flows from the lower part of the first tank, and an outlet provided above the inlet, communicating with the toilet body, and when supplying washing water to the toilet body, A second tank that maintains the wash water in a full state under the influence of the pressure of the wash water in the first tank when no air flows from the first tank through the inlet;
A jet pump mechanism having an injection nozzle that is disposed in a position facing the outlet in the second tank with a gap, and injects cleaning water toward the outlet;
A toilet cleaning device, comprising a toilet water supply channel communicating the outlet and the toilet body.   The toilet flushing apparatus according to claim 1, wherein the outlet is provided in an upper part of the second tank, and the injection nozzle is provided in an upper part of the second tank.   The said injection nozzle injects washing water until air flows in into the 2nd tank from the 1st tank via the inflow mouth, and the water level in the 2nd tank falls. The toilet cleaning device according to 1 or 2.   The toilet flushing device according to claim 3, wherein a water level at which air starts to flow into the second tank from the first tank through the inflow port can be changed.   A communication path that communicates the lower portion of the first tank and the injection nozzle; and a water supply mechanism that is provided in the communication path and supplies the cleaning water stored in the first tank to the injection nozzle. The toilet bowl washing device according to any one of claims 1 to 4.   A flush toilet comprising a toilet body and the toilet cleaning device according to any one of claims 1 to 5.

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