JP5130802B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet, and more particularly to a flush toilet equipped with a water storage tank that is provided at substantially the same height as the toilet bowl and stores flush water for washing the toilet bowl.

  In recent years, in flush toilets, in addition to the toilet body and storage tank, devices such as a pressurizing pump that pressurizes the wash water that flows to the bowl, a switching valve that switches between the jet water supply side and the rim water supply side, and these A circuit board for controlling the operating state and electrical components such as a warm water washing toilet seat are provided.

JP 2005-264469 A

  However, the above-described machinery, that is, equipment, substrates, electrical components, and the like are vulnerable to moisture such as corrosion, and are preferably installed separately from a water supply channel or a water storage tank. However, in particular, when the water storage tank supplies water in the water storage tank to the water supply channel, it is necessary to take air into the water storage tank, and an air intake port or a vent pipe is provided at any location. Therefore, water vapor or the like in the water storage tank flows out of the air intake port or the ventilation pipe to the outside and causes dew condensation, which may corrode machinery (equipment, board, electrical equipment, etc.).

  In addition, in a water storage tank, when the water supply pipe that supplies the wash water to the water storage tank has a negative pressure, or when pressure from the flush toilet is applied to the water storage tank, the water in the water storage tank There was also a problem that it was easy to flow back to the water supply pipe.

The present invention has been made to solve the above-described problems of the prior art, and provides a flush toilet capable of preventing the water vapor in the water storage tank from adversely affecting the machinery and the like. For the purpose.
Moreover, an object of this invention is to provide the flush toilet bowl which can prevent the water in a water storage tank flowing back to the water supply pipe | tube to the water storage tank.

In order to achieve the above object, the present invention provides a toilet body, a water storage tank for storing cleaning water provided at the rear and substantially at the same height as the toilet body for cleaning the toilet body, and the water storage A pressurizing pump that pumps cleaning water in the tank to the toilet body, a jet-side water supply pipe that supplies cleaning water to the jet side, a rim-side water supply pipe that supplies cleaning water to the rim side, a water storage tank, and a pressure pump A flush toilet equipped with a casing that covers and a machine such as a pressure pump accommodated in the casing, and is connected to a water supply pipe on either the jet side or the rim side and is always open to the atmosphere a vacuum breaker having an opening, is connected to one end portion to the upper portion of the water storage tank includes a vent tube in communication with the inside thereof water storage tank, a vacuum breaker is top plate covering the upper surface substantially Has the other end of the vent pipe is adapted to open toward the top plate portion, it is characterized in that is provided so as to constantly communicate with the atmosphere opening portion of the vacuum breaker.
In the present invention configured as described above, one end portion of a vent pipe communicating with the inside of the water storage tank is connected to the upper portion of the water tank, and the other end of the vent pipe substantially covers the upper surface of the vacuum breaker. It is provided so that it may open toward. Therefore, the water vapor generated in the water storage tank is discharged through the vent pipe toward the top plate part that almost covers the upper surface of the vacuum breaker. It is returned to the water storage tank through or discharged to each water supply pipe. As a result, it is possible to prevent moisture from being condensed and corroded by machinery such as a pressure pump housed in the casing.

In the present invention, preferably, the water storage tank has an upper space protruding upward at an upper portion thereof, and one end portion of a water supply pipe for supplying water to the water storage tank is connected to the upper space. In addition, one end of the vent pipe is connected to the same height as or above the one end of the water supply pipe.
In the present invention configured as described above, the upper space acts by the vent pipe in the same manner as the open air portion, so even if negative pressure is generated in the water supply pipe for supplying water to the water storage tank, air is sucked in. Therefore, the reverse flow of water from the water storage tank to the water supply pipe can be prevented.

In the present invention, preferably, in the upper space, one end of the ventilation pipe connected to the upper space and / or one end of the water supply pipe is provided with a floating for water stop that can block the one end. A ball and a hook member for holding it are provided.
In the present invention configured as described above, a water-stopping floating ball that can block one end of the vent pipe and / or one end of the water supply pipe and a gutter member that holds it are provided. When the water in the tank rises to the upper space, the water can be prevented from flowing back to the vent pipe and / or the water supply pipe. Therefore, for example, when a toilet cup is clogged, the water in the water storage tank is pressurized by pushing the zette mouth with a rubber cup, so that sewage flows back through the ventilation pipe and / or water supply pipe and enters the water main. Can be prevented.

Further, in the present invention, preferably, it further includes a water supply path switching valve for switching the water supply to the jet side water supply pipe and the rim side water supply pipe, and the jet side water supply pipe has a space between the water supply path switching valve and the water storage tank. A water supply pipe is included, and a vacuum breaker is connected to the water supply pipe.
In the present invention configured as described above, the moisture condensed by the vacuum breaker is returned to the water storage tank through the water supply pipe or the vent pipe.

In order to achieve the above object, the present invention includes a toilet body, a water storage tank provided at substantially the same height as the toilet body, and a pressure pump that pumps water in the water storage tank to the toilet body. A flush toilet comprising a water tank and a casing covering the pressure pump, one end of which is connected to the upper part of the water tank, a water supply pipe for supplying water into the water storage tank, and a water supply pipe connected to the water supply pipe The vacuum breaker having a top plate that almost covers the upper surface, and an air release portion that is always open to the atmosphere, and one end of the vacuum breaker connected to the upper portion of the water storage tank communicates with the upper space of the water storage tank. And one end portion of the vent pipe and / or one end portion of the water supply pipe respectively connected to the upper part of the water storage tank, and a floating ball for water stop that can block the one end portion thereof And the buttocks that hold it Is provided, the other end of the vent tube is adapted to open toward the top plate of the vacuum breaker is characterized in that is provided so as to constantly communicate with the atmosphere opening portion of the vacuum breaker.
In the present invention configured as described above, one end portion of a vent pipe communicating with the inside of the water storage tank is connected to the upper portion of the water tank, and the other end of the vent pipe substantially covers the upper surface of the vacuum breaker. It is provided so that it may open toward. Therefore, the water vapor generated in the water storage tank is discharged through the vent pipe toward the top plate part that almost covers the upper surface of the vacuum breaker. It is returned to the water storage tank through or discharged to each water supply pipe. Furthermore, a water-stopping floating ball that can block one end of the aeration pipe and / or one end of the water supply pipe and a gutter member that holds it are provided, so that the water in the water storage tank rises to the upper space. In this case, it is possible to prevent water from flowing back into the vent pipe and / or the water supply pipe.

  According to the present invention, it is possible to prevent the water vapor in the water storage tank from adversely affecting the machinery. Further, it is possible to prevent the water in the water storage tank from flowing back to the water supply pipe to the water storage tank.

Hereinafter, 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 FIGS. 1 is a side view of a flush toilet according to an embodiment of the present invention, FIG. 2 is a plan view of the flush toilet shown in FIG. 1, and FIG. 3 is a channel system of the flush toilet according to an embodiment of the present invention. FIG.

  As shown in FIGS. 1 and 2, the flush toilet 1 according to the embodiment of the present invention is disposed so as to cover the toilet body 2, the toilet seat 4 disposed on the upper surface of the toilet body 2, and the toilet seat 4. The cover 6 and the local washing | cleaning apparatus 8 arrange | positioned at the back upper part of the toilet bowl main body are provided. Further, a functional unit 10 is disposed behind the toilet body 2, and the functional unit 10 is covered with a side panel (casing) 11.

The toilet body 2 includes a bowl portion 12 for receiving filth, a drain trap pipe 14 extending from the bottom of the bowl section 12, a water distribution pipe 15 connected to the lower end of the drain trap pipe 14, and a jet for jetting water. A water discharge port 16 and a rim water discharge port 18 for performing rim water discharge are formed.
The jet spout 16 is formed at the bottom of the bowl portion 12 and is disposed substantially horizontally toward the inlet of the drain trap pipe 14 to discharge the wash water toward the drain trap pipe 14. ing. The rim water spouting port 18 is formed at the upper left rear of the bowl portion 12 and discharges cleaning water along the upper edge of the bowl portion 12.

  The drain trap pipe 14 includes an inlet 14a, a trap ascending pipe 14b that rises from the inlet 14a, and a trap descending pipe 14c that descends from the trap ascending pipe 14b. The trap ascending pipe 14b and the trap descending pipe 14c 14d is the top portion 14d. The above-described water distribution pipe 15 is connected to the lower end of the trap descending pipe 14c.

  The flush toilet 1 according to the present embodiment is directly connected to a water supply that supplies cleaning water, and the cleaning water is discharged from the rim spout 18 by the water supply pressure of the water supply. As for the jet water spouting, as will be described later, the washing water stored in the water storage tank 20 built in the functional unit 10 is pressurized by the pressurizing pump 22 and discharged from the jet water spouting port 16 at a large flow rate. It has become.

Next, the functional part 10 of the flush toilet 1 according to the present embodiment will be described in detail with reference to FIG.
As shown in FIG. 3, the functional unit 10 is provided with a water supply path 24 through which cleaning water is supplied from the water supply. The water supply path 24 has a stop cock 26, a strainer 28, and a branch fitting 30 from the upstream side. A constant flow valve 32, a diaphragm type electromagnetic on-off valve 34, and a water supply path switching valve 36 are provided. The constant flow valve 32 is for restricting the wash water flowing in through the stop cock 26, the strainer 28, and the branch fitting 30 to a predetermined flow rate or less.

  The constant flow valve 32, the electromagnetic on-off valve 34, and the water supply channel switching valve 36 are integrally assembled as a valve unit 37 as shown in FIG. Further, on the downstream side of the water supply path switching valve 36, there are a rim side water supply path 38 for supplying cleaning water to the rim spout 18 and a tank side water supply path 40 for supplying cleaning water to the water storage tank 20. It is connected.

Here, the wash water that has passed through the constant flow valve 32 flows into the electromagnetic on-off valve 34, and the wash water that has passed through the electromagnetic on-off valve 34 is rimmed from the rim water supply path 38 on the rim side by the water supply path switching valve 36. It is supplied to the water storage tank 20 from the water outlet 18 or from the tank side water supply path 40 which is the tank side. The water supply path switching valve 36 can supply cleaning water to both the rim side water supply path 38 and the tank side water supply path 40 at the same timing, and can change the ratio of the water supply amount to the rim side and the tank side arbitrarily. It is a valve.
The opening / closing operation of the electromagnetic opening / closing valve 34 and the switching operation of the water supply channel switching valve 36 are controlled by the controller 62 of the function unit 10.

  A jet-side water supply path 46 is connected to the lower part of the water storage tank 20, and a downstream end of the jet-side water supply path 46 is connected to the jet water outlet 16. Further, the pressurizing pump 22 described above is provided in the middle of the jet side water supply passage 46. The pressurizing pump 22 pressurizes the cleaning water stored in the water storage tank 20 and discharges it from the jet water outlet 16. The rotation speed, operating time, and the like of the pressure pump 22 are controlled by a controller 62 provided in the function unit 10.

  The jet-side water supply path 46 includes an upstream jet-side water supply path 46 a upstream from the pressurizing pump 22 and a downstream-side downstream jet-side water supply path 46 b. Here, as shown in FIG. 3, the downstream jet side water supply passage 46 b first extends upward from the pressurizing pump 22, and a pipe is disposed above the water storage surface of the bowl portion 12 of the toilet 1, and then The piping is configured to extend downward. Thus, in the downstream jet side water supply path 46b formed in the upward convex shape, the top portion 46c, which is the highest part of the convex portion, is a jet side water supply path from the water storage tank 20 to the jet spout 16. It is the highest part of 46.

Next, the rim-side water supply passage 38 is provided with a rim water discharge vacuum breaker 48 to prevent backflow of the cleaning water from the rim discharge port 18 when negative pressure is generated in the water supply passage 24. Yes. Further, as shown in FIG. 3, the rim discharge vacuum breaker 48 is disposed above the upper end surface of the bowl portion 12, thereby reliably preventing backflow. Further, the washing water overflowing from the air release portion of the rim water spouting vacuum breaker 48 flows into the water storage tank 20 through the vent pipe (return pipe line) 50.
The tank side water supply path 40 is also provided with a vacuum breaker 42 as a check valve to prevent the backflow of the wash water from the water storage tank.

Here, the water storage tank 20 is a sealed type water storage tank, and a ball type check valve 43 is provided at a connecting portion 80 between the tank side water supply path 40 and the water storage tank 20 as described later. The ball check valve 43 causes the ball 90 to rise and close the connection with the tank-side water supply path 40 even when the water storage tank 20 is full. It is designed not to flow backward.
Similarly, a ball type check valve 44 is provided at the connecting portion 82 between the vent pipe 50 and the water storage tank 20 as will be described later, so that even when the water storage tank 20 becomes full, the washing water is returned to the return pipe. The flow does not flow back to the path 50.

  Furthermore, a jet water spouting flapper valve 56 and a water drain plug 58, which are check valves, are provided in the upstream jet side water supply path 46a of the jet side water supply path 46. The jet water spouting flapper valve 56 and the water drain plug 58 are arranged at a height near the lower end of the water storage tank 20 below the pressurizing pump 22. For this reason, by opening the water drain plug 58, the cleaning water in the water storage tank 20 and the pressure pump 22 can be drained during maintenance or the like.

  Further, by disposing the jet water spouting flapper valve 56 between the water storage tank 20 and the pressurizing pump 22, when the water level in the water storage tank 20 becomes lower than the height of the pressurizing pump 22, washing water is added. The pressure pump 22 flows backward to the water storage tank 20 to prevent the washing water in the pressurizing pump 22 from escaping and the pressurizing pump 22 from idling. A water receiving tray 60 is disposed below the pressurizing pump 22 so as to receive condensed water droplets and water leakage.

  Inside the water storage tank 20, an upper float switch 64a and a lower float switch 64b are arranged. The upper float switch 64a is turned on when the water level in the water storage tank 20 reaches the full water position (L1) during normal use, and the controller 62 detects this and closes the electromagnetic switching valve 34. The lower float switch 64b is turned on when the water level in the water storage tank 20 drops to a predetermined water level (L3), and the controller 62 detects this and stops the pressurizing pump 22.

Further, an overflow flow path 70 having one end 70a opened and the other end 70b connected to the downstream jet side water supply path 64b is provided above the upper float switch 64a of the water storage tank 20. A flapper valve 72 that is a check valve is attached to the overflow channel 70.
When the water in the water storage tank 20 becomes higher than the opening 70a, the overflow flow path 70 allows the water in the water storage tank 20 to escape to the jet-side water supply passage 46 and the water overflows from the water storage tank 20. It is something to prevent.

  Further, the overflow flow path 70 and the flapper valve 72 prevent backflow from the jet water outlet 16 of the washing water, and can perform edge cutting between them. In addition, since the other end 70b of the overflow channel 70 is provided above the level of the stored water in the bowl portion 12, the backflow from the jet spout 16 of the cleaning water can be more reliably prevented. Yes.

  The operation contents of the electromagnetic on-off valve 34, the water supply channel switching valve 36, the pressurizing pump 22 and the like described above will be described. The controller 62 operates the electromagnetic on / off valve 34 and the water supply channel switching valve 36 by the operation of the toilet flushing switch (not shown) by the user, and first discharges water from the rim water discharge port 18 and continues the rim water discharge while continuing the rim water discharge. Then, the pressure pump 22 is operated to start water discharge from the jet water discharge port, and a siphon action is generated to discharge and wash the accumulated water in the bowl portion 12 together with the filth. Further, the controller 62 continues the rim water discharge even after the operation of the pressurizing pump 22 is stopped, stores the accumulated water in the bowl portion 12, and finishes the cleaning. After the cleaning is completed, the water supply path switching valve 36 is switched to the water storage tank 20 side to supply cleaning water to the water storage tank 20. When the water level in the water storage tank 20 rises and the upper float switch 64a detects a specified water storage amount, the controller 62 closes the electromagnetic valve 34 and stops water supply.

Next, the upper lid structure of the water storage tank 20 will be described with reference to FIGS. FIG. 4 is a perspective view of the upper lid of the water storage tank according to the embodiment of the present invention as viewed obliquely from above, and FIG. 5 is a perspective view of the back side of the upper lid of the water storage tank according to the embodiment of the present invention as viewed from diagonally below. FIG. 6 is a cross-sectional view of the upper lid taken along line VI-VI in FIG.
As shown in FIGS. 4 and 5, the upper lid portion 84 is formed in the same shape as the outer shape of the water storage tank 20 in plan view, and its peripheral edge portion is coupled to the tank body. The upper lid portion 84 is formed with an upper protruding portion 86 protruding upward, and the inner upper space S is above the full water position L1 and filled with air, as shown in FIG. .

  Here, as shown in FIG. 3, when the drain trap pipe 14 of the toilet body 2 is clogged and the water level in the bowl portion 12 rises, the jet water spouting flapper valve 56 and the flapper valve 72 of the overflow channel 70 are debris. If it does not function normally due to chewing or the like, the water level of the water storage tank 20 rises from the upper surface of the bowl portion 12 to a water level overflowing with water. Therefore, the distance between the upper surface of the bowl portion 12 and the water outlet 80b of the tank-side water supply passage 40 is called a so-called air gap. By securing this distance by a predetermined amount (1 inch or more), the water tank 20 It is possible to prevent water from flowing back to the water main.

  However, as shown in FIG. 3, in the water storage tank 20 of the present embodiment, the upper space S in the upper protrusion 86 is narrow and the upper surface of the bowl portion 12 is formed in order to reduce the volume of the water storage tank 20 and make it compact. Although a predetermined distance can be ensured in the vertical direction between the water outlet 80b of the tank side water supply path 40 and the water outlet 80b of the tank side water supply path 40, the distance between the side wall of the upper protrusion 86 and the water outlet 80b of the tank side water supply path 40 cannot be ensured.

  Here, when the tank-side water supply path 40, which is the primary side of the water channel system, becomes negative pressure, the communication connected to the atmosphere opening part A of the vacuum breaker 42, as will be described later, next to the connection part 80. Since the trachea 50 is provided, the tank-side water supply path 40 does not suck the water in the water storage tank 20 but sucks air from the vent pipe 50, so that the water in the water storage tank 20 is supplied to the tank-side water supply. It is possible to prevent the flow back to the path 40.

  On the other hand, when water pressure is applied from the jet water spouting port 16 to the water storage tank 20 by a rubber cup (not shown) used when the toilet bowl is clogged or the like, the jet water spouting flapper valve 56 and the flapper valve 72 of the overflow channel 70 are debris. If it does not function normally due to chewing or the like, the water in the water storage tank 20 rises due to the water pressure. Ball type check valves 43 and 44 provided to prevent backflow into the tank-side water supply path 40 in such a case will be described. As shown in FIGS. 3 to 5, a connection portion 80 to which the tank-side water supply channel 40 is connected and a connection portion to which the vent pipe 50 is connected to the upper surface of the upper protrusion 86 of the upper lid portion 84 described above. 82 is provided. In the connection portion 80, a hollow cylindrical connection member 80a to which the tank side water supply path 40 is connected is provided, and a water discharge port 80b is formed in the connection member 80a. In the connecting portion 82, a vent pipe 50 (return pipe 50 for flowing the wash water overflowing from the atmosphere opening portions of the tank side water supply channel vacuum breaker 42 and the rim water discharge vacuum breaker 48 into the water storage tank 20) is connected. A hollow cylindrical connecting member 82a is provided, and an outlet 82b for water vapor or air is formed in the connecting member 82a. In this embodiment, the connection part 80 to which the tank side water supply path 40 is connected and the connection part 82 to which the vent pipe 50 is connected are arranged at substantially the same height, but the tank side water supply path 40 is connected. The connecting portion 82 (connecting member 82a, outlet 82b) to which the vent pipe 50 is connected may be arranged above the connecting portion 80 (connecting member 80a, discharge port 80b).

  As shown in FIGS. 5 and 6, balls (floating balls) 90 and 92 filled with air are provided below the connection members 80a and 82a, respectively. Further, these balls 90, Scissors members 94 and 96 for holding 92 are provided. When the inside of the upper protrusion 86 is filled with air, the balls 90 and 92 are received by the flange members 94 and 96, and the connection members 80a and 80b (the water discharge port 80b and the outlet 82b) are opened. ing. Therefore, water can be discharged from the water outlet 80b of the tank-side water supply passage 40, and water vapor and air can flow out from the water vapor and air outlet 82b.

  Accordingly, when water pressure is applied to the water storage tank 20 from the jet outlet 16 by a rubber cup (not shown) used when the toilet bowl is clogged, the balls 90 and 92 are respectively stored in the water storage tank. 20 receives the water in the ball 20 and floats by the buoyancy of the balls 90 and 92 itself, closes the water outlet 80b (connecting member 80a) and the outlet 82b (connecting member 82a), and the water in the water storage tank 20 flows into the tank-side water supply channel 40 and The reverse flow to the water passage 50 is prevented.

  Such a backflow prevention action is particularly effective when the above-described air gap is relatively small. That is, even when the size of the water storage tank 20 is formed to be relatively small in relation to other devices, substrates, electrical components, etc., backflow can be effectively prevented.

Next, the structure of the vacuum breaker of the tank side water supply channel and the piping of each pipe will be described with reference to FIGS. FIG. 7 is a cross-sectional view showing the structure of the vacuum breaker according to the embodiment of the present invention. FIG. 8 is a perspective view of the vacuum breaker, the tank-side water supply pipe, the vent pipe, and the like according to the embodiment of the present invention when viewed obliquely from above. FIG.
First, as shown in FIG. 7, the vacuum breaker 42 has a water inlet 42a, a water outlet 42b, and an air opening 42c. The upstream portion 40a of the tank side water supply path 40 is connected to the water inlet 42a, the downstream portion 40b of the tank side water supply path 40 is connected to the water outlet 42b, and the atmosphere opening port 42c is open to the atmosphere. The air opening 42c is closed by a vacuum breaker piece 42f. The vacuum breaker piece 42f is arranged so as to be movable in the vertical direction, and has a shaft part 42e slidable by a guide part 42d.

  In use, when washing water flows from the water inlet 42a, the vacuum breaker piece 42f is moved to the upper position by the water force, and the atmosphere opening port 42c is closed. Thereby, the wash water flowing in from the water inlet 42a is discharged from the water outlet 42b. Further, when the inflow of washing water from the water inlet 42a is stopped, the vacuum breaker piece 42f is moved to a lower position by gravity, and the water inlet 42a is closed. Further, the water outlet 42b communicates with the air opening 42c. The vacuum breaker piece 42f moves to a lower position due to gravity and closes the water inlet 42a. However, in the present embodiment, a slight gap is formed between the vacuum breaker piece 42f and the water inlet 42a. . Therefore, even if the upstream portion 40a of the tank-side water supply passage 40 which is the primary side becomes negative pressure, the reverse flow of water from the downstream portion 40b side of the tank-side water supply passage 40 by sucking air through such a gap Can be prevented. Moreover, it is also possible to return the water which overflowed in the vacuum breaker 42 to the upstream part 40a of the tank side water supply path 40 which is a primary side by such a clearance gap.

Next, the vacuum breaker 42 is formed with a vent pipe attachment port 42h, and the vent pipe 50 is attached to the vent pipe attachment port 42h. The washing water overflowing from the atmosphere opening portion A of the vacuum breaker 42 in the tank side water supply passage flows into the water storage tank 20 through the return pipe 50.
Next, as shown in FIGS. 7 and 8, a vacuum breaker top plate portion 42 g is attached to the vacuum breaker 42. The vacuum breaker top plate portion 42g is provided so as to substantially cover the atmosphere opening portion A of the vacuum breaker 42, but has a slight gap around the vacuum breaker body and is open to the atmosphere. .

Here, the vent pipe attachment port 42h and the vent pipe 50 in the vicinity of the attachment port 42h extend toward the vacuum breaker top plate portion 42g. Accordingly, the water vapor or air discharged from the water storage tank 20 through the vent pipe 50 first flows out toward the vacuum breaker top plate portion 42g and hits the vacuum breaker top plate portion 42g. As a result, the water vapor condenses on the vacuum breaker top plate portion 42g and accumulates in the air release portion A of the vacuum breaker. It returns to the inside of the water storage tank 20 again through the downstream part 40b.
As a result, it is possible to prevent a problem that water vapor escapes from the water storage tank 20, and moisture adheres to other devices and substrates, in particular, electrical components such as a warm water washing toilet seat, and corrodes.
In the present embodiment, the top plate portion of the vacuum breaker 42 for the rim water spouting may be used as the top plate portion for condensing water vapor, although the vacuum breaker 42 of the tank side water supply channel is used.

1 is a side view of a flush toilet according to an embodiment of the present invention. It is a top view of the flush toilet shown in FIG. It is a whole lineblock diagram showing the channel system of the flush toilet by the embodiment of the present invention. It is the perspective view which looked at the upper cover of the water storage tank by the embodiment of the present invention from the slanting upper part. It is the perspective view which looked at the back side of the upper cover of the water storage tank by the embodiment of the present invention from the slanting lower part. FIG. 6 is a cross-sectional view of the upper lid taken along line VI-VI in FIG. It is sectional drawing which shows the structure of the vacuum breaker by embodiment of this invention. It is the perspective view which looked at the vacuum breaker by the embodiment of the present invention, the tank side water supply line, the ventilation pipe, etc. from the slanting upper part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 12 Bowl part 14 Drain trap pipe 16 Jet spout 18 Rim spout 20 Reservoir tank 22 Pressurizing pump 24 Water supply path 38 Rim side water supply path 40 Tank side water supply path 42 Vacuum of tank side water supply path Breaker 42g Vacuum breaker top plate portion 42h Vent pipe mounting port 46 Jet side water supply path 46a Upstream jet side water supply path 46b Downstream jet side water supply path 43, 44 Ball type check valve 50 Vent pipe (return pipe)
56 Jet water spouting flapper valve 64a Upper float switch 64b Lower float switch 70 Overflow flow path 72 Flapper valve 80 Connection part 80a between tank side water supply path and water storage tank 80a Connection member 80b Water discharge port 82 Return line (vent pipe) and water storage tank Connecting part 82a connecting member 82b outlet 86 upward projecting part 90, 92 ball (floating ball) of water storage tank
94, 96 籠 Member A Air release part S of vacuum breaker of tank side water supply channel S Upper space of upward projecting part of water storage tank

Claims (5)

A toilet body, a water storage tank that is provided at the rear of the toilet body and stores cleaning water for cleaning the toilet body, and the wash water in the water storage tank is pumped to the toilet body. A pressure pump, a jet-side water supply pipe for supplying cleaning water to the jet side, a rim-side water supply pipe for supplying cleaning water to the rim side, a casing covering the water storage tank and the pressure pump, and a casing A flush toilet equipped with machinery such as the pressurized pump accommodated therein,
A vacuum breaker connected to the water supply pipe on either the jet side or the rim side and provided with an air release portion that is always open to the atmosphere ;
One end of the water storage tank is connected to the upper part of the water storage tank, and a vent pipe communicated with the water storage tank.
The vacuum breaker has a top plate part that substantially covers the upper surface thereof, and the other end of the vent pipe opens toward the top plate part, and is provided so as to always communicate with the atmosphere opening part of the vacuum breaker. A flush toilet characterized by being made. The water storage tank has an upper space protruding upward at the upper part thereof,
One end of a water supply pipe for supplying water to the water storage tank is connected to the upper space, and one end of the vent pipe is connected to the same height as or above the one end of the water supply pipe. The flush toilet according to Item 1. In the upper space, one end of the vent pipe and / or one end of the water supply pipe connected to the upper space holds a floating ball for water stop that can block the one end. The flush toilet bowl according to claim 2 , wherein a bowl member is provided. Furthermore, it has a water supply path switching valve for switching the water supply to the jet side water supply pipe and the rim side water supply pipe,
The jet-side water supply pipe includes a water supply pipe between the water supply path switching valve and the water storage tank, and the vacuum breaker is connected to the water supply pipe. The flush toilet according to. A toilet body, a water storage tank provided at substantially the same height as the toilet body, a pressure pump that pumps water in the water storage tank to the toilet body, and a casing that covers the water storage tank and the pressure pump. A flush toilet comprising
One end of the water storage tank is connected to the water tank, and a water supply pipe for supplying water into the water storage tank;
A vacuum breaker that is connected to the water supply pipe and substantially covers the top surface thereof , and an air release part that is always open to the atmosphere ;
One end of which is connected to the upper part of the water tank, and has a vent pipe communicating with the upper space of the water tank,
One end of the vent pipe and / or one end of the water supply pipe respectively connected to the upper part of the water storage tank, a floating ball for stopping water that can close the one end, and a gutter member that holds the ball is provided, the other end of the vent tube is washed with water, characterized in that said toward the top plate of the vacuum breaker while opening is provided so as to be always communicated with the atmosphere opening portion of the vacuum breaker Toilet bowl.

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