JP2009007847A - Air vent structure for flush toilet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air vent structure for a flush toilet having compact construction for more surely preventing air release and water leakage. <P>SOLUTION: The air vent structure for the flush toilet has a washing water supply means 22 for supplying washing water to a jet side water supply passage 46, wherein, at the initial stage of supplying washing water to the jet side water supply passage, air residing in the jet side water supply passage is released from the jet side water supply passage. It comprises an air vent pipe 70 for discharging air residing in the jet side water supply passage, from the jet side water supply passage, a flapper valve 72 for establishing an opened condition or a closed condition between the jet side water supply passage and the air vent pipe, and an energizing means provided in the flapper valve for energizing the flapper valve to make the flapper valve into an opened condition with no operation even when receiving the pressure of air or to make the flapper valve into a closed condition with operation when receiving the water pressure of the washing water supplied into the jet side water supply passage. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air vent structure of a flush toilet, and more particularly, a flush toilet for extracting air staying in a jet side water supply channel from the jet side water supply channel in an initial stage of supplying wash water to the jet side water supply channel. This relates to the air bleeding structure.

  Conventionally, in order to prevent the air that has accumulated in the jet water distribution pipe from being discharged from the jet water outlet at the start of jet water discharge and causing noise such as “bumps”, the air in the jet water distribution pipe is removed. There is known a jet water supply apparatus that discharges not from a jet water outlet but from other parts. For example, Patent Document 1 discloses a toilet water supply device in which a branch flow path is connected to a water distribution pipe for jet water discharge, and a backflow prevention valve is provided at the tip of the branch flow path.

Japanese Patent Laid-Open No. 04-327618

  However, the jet water supply apparatus as described above requires a branch pipe and a backflow prevention valve, and when there is not much space around the water distribution pipe, it may be difficult to arrange the branch pipe and the backflow prevention valve. It was. Further, depending on the state of the water discharge amount and water discharge pressure at the start of jet water discharge, the air may not be completely removed, and further, it may not be possible to completely prevent the water in the water distribution pipe from leaking.

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to provide an air vent structure for a flush toilet that can prevent air leakage and water leakage more reliably. And

In order to achieve the above object, the present invention has a jet-side water supply channel communicating with a jet water outlet and a cleaning water supply means for supplying cleaning water to the jet-side water supply channel. This is a flushing structure of a flush toilet for extracting air remaining in the jet side water supply channel from the jet side water supply channel in the initial stage of supply, and is connected to the jet side water supply channel. An air vent pipe communicating with the atmosphere for discharging the staying air from the jet side water supply path, a flapper pipe provided between the air vent pipe and the jet side water supply path, and provided in the flapper pipe A flapper valve that can be opened or closed between the jet-side water supply passage and the air vent pipe, and is provided in the flapper valve and pushed out by washing water The flapper valve is not operated even if it receives the pressure of the remaining air, or the flapper valve is opened. Alternatively, the flapper valve is closed when the pressure of the washing water supplied to the jet water supply passage is received. And an urging means for urging the flapper valve.
In the present invention configured as described above, a flapper valve that can open or close between the jet side water supply channel and the air vent pipe is provided, and further, the flapper valve is retained by being pushed out by the washing water. The flapper valve is not operated even if it receives the pressure of the air that is in the open state, or the flapper valve is closed to operate when the water pressure of the washing water supplied to the jet water supply passage is received, Since the urging means for urging the flapper valve is provided in the flapper valve, it is possible to prevent air leakage and water leakage more reliably.

In the present invention, preferably, the flapper valve is rotatable about the axis of its upper edge, and the flapper pipe and the flapper valve are arranged so that when the flapper valve is oriented in the vertical direction, A gap is formed to allow air to pass to the extraction tube, and the flapper valve is configured to close the flapper tube when the flapper valve is tilted at an angle. It is a weight attached to the flapper valve so as to have a weight, and the weight of the flapper valve is a vertical downward force due to gravity applied to the flapper valve when receiving air pressure in the initial stage of supplying cleaning water. When the air pressure is overcome and the flapper valve is directed vertically to escape the air, the pressure of the wash water supplied to the jet side water supply channel is received. Flapper valve prevailed that water pressure from the force in the vertically downward due to gravity, according to the flapper valve is adjusted so as to shield the wash water obliquely inclined.
In the present invention configured as described above, a weight is attached so that the flapper valve has a predetermined weight, and by adjusting the weight of the weight, the pressure of the air in the initial stage of supplying cleaning water can be reduced. When receiving, the vertical downward force due to gravity applied to the flapper valve overcomes the air pressure, and the flapper valve faces in the vertical direction to form a gap through which air passes from the jet side water supply channel to the air vent pipe, When the water pressure of the washing water supplied to the jet side water supply passage is received, the flap pressure is tilted obliquely by the force of the vertical pressure due to gravity applied to the flapper valve, and the flapper valve closes the flapper pipe. Therefore, it is possible to prevent air leakage and water leakage more effectively with a simple and compact configuration.

Further, in the present invention, preferably, it further has a water storage tank for storing the wash water, the air vent pipe also serves as an overflow pipe for escaping the wash water overflowing from the water storage tank, and the wash water overflowing from the water storage tank is It passes through this overflow pipe, flows through the gap between the flapper valve and the flapper pipe, which is biased by gravity and faces in the vertical direction, and flows into the jet water supply channel.
In the present invention configured as described above, since the air vent pipe and the overflow pipe are combined, it is possible to prevent air from leaking and prevent water from leaking with a simpler and more compact configuration. Moreover, even if washing water flows into the overflow pipe, the washing water flows into the water storage tank, so that water leakage can be prevented.

In the present invention, it is preferable to further include a rim water supply channel that supplies cleaning water to the rim water spouting port, and the air vent pipe is connected to the rim water supply channel from the jet side water supply channel.
In the present invention configured as described above, it is possible to prevent air leakage and water leakage with a simpler and more compact configuration. Moreover, even if washing water flows into the overflow pipe, the washing water flows to the rim spout, so that water leakage can be prevented.

In the present invention, it is preferable that the biasing means is a spring, and the flapper valve has a biasing force of the spring over the air pressure when the air pressure is received in the initial stage of supplying the cleaning water, so that the flapper valve is in the vertical direction. When the pressure of the washing water supplied to the jet side water supply channel is received, the pressure of the water is adjusted so that the flapper valve tilts diagonally by overcoming the biasing force of the spring. The gap is formed so that air passes from the jet-side water supply channel to the air vent pipe when facing the direction, and the flapper valve is inclined obliquely by receiving the washing water pressure. It is formed to close.
In the present invention configured as described above, when the air pressure is received by the spring in the initial stage of supplying the cleaning water, the biasing force of the spring prevails over the air pressure, and the flapper valve faces in the vertical direction so that the jet side water supply channel On the other hand, when air passes through the air vent pipe and receives the water pressure of the washing water supplied to the jet side water supply path, the water pressure overcomes the biasing force of the spring and the flapper valve tilts diagonally, and the flapper valve moves the flapper pipe. Since it is configured to be closed, it is possible to more effectively prevent air leakage and water leakage with a simple and compact configuration.

  According to the air vent structure of the flush toilet according to the present invention, it is possible to prevent air leakage and water leakage more reliably.

Hereinafter, an air bleeding 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 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 illustrates a 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 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 discharge, as will be described later, the wash water stored in the water storage tank 20 built in the function unit 10 is pressurized by the pressurizing pump 22 as the wash water supply means, and the jet water discharge port is supplied at a large flow rate. 16 is discharged.

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 to which cleaning water is supplied from the water supply. 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 a controller 62 provided in 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 A of the bowl portion 12 of the toilet 1. 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 wash water overflowing from the air release portion of the rim water spouting vacuum breaker 48 flows into the water storage tank 20 through the return pipe 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 connection portion between the tank side water supply path 40 and the water storage tank 20. Even when the water storage tank 20 is filled with the ball check valve 43, the ball 43a rises and closes the connecting portion with the tank-side water supply path 40. It is designed not to flow backward.
Similarly, a ball type check valve 44 is also provided at the connection portion between the return pipe 50 and the water storage tank 20, so that even when the water storage tank 20 becomes full, the washing water flows back into the return pipe 50. There is nothing to do.

  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 end float switch 64a and a lower end float switch 64b are arranged. The upper end 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 on-off valve 34. The lower end 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 channel 70 having one end 70a opened and the other end 70b connected to the downstream jet side water supply channel 64b is provided at a position above the upper end 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. That is, since the other end 70b of the overflow channel 70 is provided above the water level of the stored water in the bowl portion 12, the downstream jet side water supply channel 46b from the one end 70a of the overflow channel 70 during normal standby. Inhalation of air toward the edge allows cutting of the edge, and since it has a downward slope from one end 70a to the other end 70b of the overflow flow path 70, water intrusion in a normal standby state is prevented. It is supposed to be.

  Here, 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, referring to FIG. 4, a schematic configuration of an air vent structure for releasing air accumulated in the jet side water supply passage 46 according to the embodiment of the present invention will be described. FIG. 4 is a cross-sectional perspective view showing a flapper structure according to an embodiment of the present invention.
As shown in FIG. 4, a flapper structure 74 that is an air vent structure is a flapper connection pipe 80 that is inserted and connected to the other end 70b of the overflow hose of the overflow channel (air vent channel) 70 described above. And a connecting pipe main body 82 connected to the downstream jet side water supply passage 46b described above.
Here, the connecting pipe main body 82 has a first connecting portion 82a, a second connecting portion 82b, and a third connecting portion 82c. The flapper connection pipe 80 is connected to the second connection portion 82 b via the square packing 84. A flapper valve 72 is provided at the boundary between the flapper connection pipe 80 and the second connection part 82b. Depending on the operation of the flapper valve 72, the flapper connection pipe 80 and the connection pipe main body 82 are They are designed to communicate or shield each other.

  On the other hand, the connecting pipe main body 82 has a first connecting portion 82a connected to the elbow member 86 of the downstream jet side water supply passage 46b via an O-ring 88, and a third connection portion 82c connected to the downstream jet side water supply passage 46b. Is connected to a jet hose on the downstream side through a zet packing 90 and a fixing fitting 92. The elbow member 86 is inserted and connected to the jet hose 46d. The first connecting portion 82a and the third connecting portion 82c of the connecting pipe main body 82 communicate with each other without any valve body, and the cleaning water of the jet water is passed from the upstream U to the downstream D. It is supposed to flow.

  Next, the air vent structure including the flapper valve 72 according to the embodiment of the present invention will be further described with reference to FIGS. FIG. 5 is a front view (a) showing the structure of the flapper valve on the connecting pipe main body side, a side view (b) of the flapper valve, and a rear view (c) showing the structure of the flapper valve on the flapper connecting pipe side. 6 is a sectional perspective view (a) and a sectional side view (b) showing the flapper structure when the flapper valve is opened, and FIG. 7 is a flapper structure when the flapper valve is closed. It is the cross-sectional perspective view (a) and cross-sectional side view (b) which show a body.

  As shown in FIG. 5, the flapper valve 72 includes a flapper plate 72a having an upper half formed in a rectangular shape and a lower half formed in a semicircular shape, and a flapper plate 72a formed on an upper edge portion of the flapper plate 72a. It consists of a flapper shaft 72b to be supported, two circular weights 72d fixed to the front side and the back side by truss screws 72c, and a buffer packing 72e.

  As shown in FIGS. 6B and 7B, both end portions of the flapper shaft 72b are fitted into holes 82d formed in the connecting pipe main body 82, and the flapper valve 72 is centered on the flapper shaft 72b. It can swing. Then, as shown in FIG. 6, the flapper valve 72 is connected to the first position where it is hung down straight due to gravity mainly applied to the weight, and as shown in FIG. It swings between the second position moved obliquely upward toward the tube 80.

  First, the first position is shown in FIG. Here, as shown in FIG. 6A, the second connecting portion 82b of the connecting pipe main body 82 and a part of the other end portion 70b of the overflow channel 70 that is in contact with the second connecting portion 82b. Is formed with a space E having a rectangular cross section. This rectangular cross section E is shown in phantom in FIG. Thus, in the first position, the gap E1 exists between the lower half semicircular portion of the flapper plate 72a and the space E, so that the flapper connection pipe 80 and the connection pipe body 82 are in communication with each other. As described later, air is allowed to escape from the gap E1 to the overflow channel 70 as will be described later.

  Next, the second position is shown in FIGS. Here, the flapper connection tube 80 is formed in a circular shape in cross section, and the opening 80e toward the connection tube main body 82 is also formed in a circular shape. This circular opening 80e is indicated by an imaginary line in FIG. In this way, in the second position, the buffer packing 72e of the flapper valve 72 that has received water pressure and moved obliquely upward toward the flapper connection pipe 80 comes into contact with the opening 80e to the connection pipe main body 82, so that the flapper connection The pipe 80 and the connecting pipe main body 82 are in a shielding state, and the washing water of the jet water discharge is prevented from flowing into the overflow channel 70 as will be described later.

Next, the function and effect of the embodiment of the present invention will be described mainly with reference to FIG. FIG. 8 is a view schematically showing an air vent structure provided with a flapper valve in order to explain the operation and effect of the embodiment of the present invention. The flapper valve is shown in an open state (a) and a closed state (b), respectively. Show.
First, as shown in FIG. 3, when washing is not performed, air is accumulated in the jet-side water supply path 46 above the reservoir surface A of the bowl portion 12 of the toilet 1. And at the time of jet water discharge start, as shown to Fig.8 (a), the washing water Wr flows so that such air Air may be extruded. Here, the weight of the flapper valve 72 is adjusted by the weight 72d. With the air pressure generated by such pushing, the flapper valve 72 receives the first position described above, that is, the gravity mainly applied to the weight. It remains in the position as shown in FIG. 8A that hangs straight down. Accordingly, the air Air passes through the gap E1 between the lower half semicircular portion of the flapper plate 72a and the space E, and then escapes to the overflow channel 70.

Next, after such air is almost pushed out through the gap E1, as shown in FIG. 8 (b), the connecting pipe body 82 is filled with the cleaning water Wr and from the pressurizing pump 22. Pressure is applied. Here, the weight of the flapper valve 72 is adjusted by the weight 72d. When the flapper valve 72 receives the pressure of the pressurized washing water, the flapper valve 72 is in the second position, that is, the flapper connection. As shown in FIG. 8B, the buffer packing 72e moves obliquely upward toward the tube 80 and seals against the opening 80e of the flapper connection tube 80. Accordingly, the cleaning water Wr flows through the jet-side water supply channel 46 without flowing back into the overflow channel 70.
As described above, according to the embodiment of the present invention, the air venting structure for venting air using the overflow channel 70 is provided, and noise such as “bumps” at the start of jet water discharge can be prevented.

  As a modified example, as shown in FIG. 9, the pipe 170 to the rim-side water supply path 38 is connected to the jet-side water supply path 46 without using the overflow flow path 70, and a similar operation is performed via a flapper valve 172. You may make it acquire an effect | action. In this case, the air accumulated in the jet side water supply passage 46 is discharged from the rim water spouting port at the start of jet water spouting.

In the present embodiment, the flapper valve 72 is biased by the weight 72d so that the flapper valve 72 is opened when receiving air pressure and shielded when receiving water pressure. As shown in FIG. 10, a spring 273 may be attached to the flapper valve 272 so that the flapper valve 272 is opened when receiving air pressure and shielded when receiving water pressure. In such a case, when receiving the pressure of the air in the initial stage of supplying the cleaning water, the biasing force of the spring 273 is greater than the air pressure, and the flapper valve is directed in the vertical direction, and the cleaning supplied to the jet side water supply passage 46 is performed. When receiving the water pressure of the water, it is preferable to adjust the water pressure so that the flapper valve 272 tilts obliquely over the urging force of the spring 273.
Note that the urging means corresponds to a case where the flapper valve itself is made of a material having a large specific gravity (metal or the like) to provide the same urging effect.

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. 1 is an overall configuration diagram showing a flush toilet according to an embodiment of the present invention. It is a section perspective view showing a flapper structure object by an embodiment of the present invention. They are the front view (a) which shows the structure of the flapper valve by the side of a connecting pipe main body, the side view (b) of a flapper valve, and the rear view (c) which shows the structure of the flapper valve by the side of a flapper connecting pipe. They are a cross-sectional perspective view (a) and a cross-sectional side view (b) showing the flapper structure when the flapper valve is opened. They are a cross-sectional perspective view (a) and a cross-sectional side view (b) showing the flapper structure when the flapper valve is closed. It is a figure showing typically an air bleeding structure provided with a flapper valve in order to explain an operation effect of an embodiment of the present invention, and is a figure showing an open state (a) and a closed state (b) of a flapper valve, respectively. . It is a whole block diagram which shows the flush toilet bowl by the modification of embodiment of this invention. It is a figure which shows typically the biasing structure of the flapper valve by the modification of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 12 Bowl part 14 Drain trap line 16 Jet spout 18 Rim spout 20 Reservoir tank 22 Pressurization pump 24 Water supply path 38 Rim side water supply path 40 Tank side water supply path 46 Jet side water supply path 46a Upstream Jet side water supply passage 46b Downstream jet side water supply passages 43, 44 Ball type check valve 56 Jet water spouting flapper valve 70 Overflow passage 70a One end of the overflow passage (opening)
70b, the other end 72 of the overflow channel, flapper valve 72a, flapper plate 72b, flapper shaft 72d, weight 72e, buffer packing 80, flapper connection pipe 80e, opening 82, connection pipe body 82a, first connection part 82b, second connection part 82c, third connection part E Space E1 Gap

Claims (5)

A jet-side water supply channel that communicates with the jet water outlet; and a cleaning-water supply unit that supplies cleaning water to the jet-side water supply channel, and the jet-side water supply in an initial stage of supplying the cleaning water to the jet-side water supply channel An air bleeding structure of a flush toilet for drawing air staying in a path from the jet side water supply path,
An air vent pipe connected to the jet side water supply channel and communicating with the atmosphere for discharging air staying in the jet side water supply channel from the jet side water supply channel;
A flapper pipe provided between the air vent pipe and the jet-side water supply channel;
A flapper valve provided in the flapper pipe and capable of opening or closing between the jet side water supply passage and the air vent pipe;
The flapper valve is provided in the flapper valve so that the flapper valve is not operated even when subjected to the pressure of the stagnant air pushed out by the flush water, or the flush water supplied to the jet-side water supply passage. Energizing means for energizing the flapper valve so as to actuate when the water pressure is received to close the flapper valve;
An air vent structure for a flush toilet characterized by comprising: The flapper valve is pivotable about the axis of its upper edge,
The flapper pipe and the flapper valve are configured such that when the flapper valve is oriented vertically, a gap is formed so that air passes from the jet-side water supply passage to the air vent pipe, and the flapper valve is The flapper valve is configured to close the flapper tube when tilted obliquely;
The biasing means is a weight attached to the flapper valve so that the flapper valve has a predetermined weight,
The weight of the flapper valve is such that when the pressure of the air in the initial stage of supplying the washing water is received, the vertical downward force due to gravity applied to the flapper valve overcomes the air pressure so that the flapper valve is substantially vertical. When the air pressure is released and the water pressure of the washing water supplied to the jet side water supply passage is received, the flapper valve is inclined and washed by the water pressure over the vertical downward force due to gravity applied to the flapper valve. The bleeder structure of a flush toilet according to claim 1, wherein the bleed structure is adjusted so as to shield water. In addition, it has a water storage tank for storing wash water,
The air vent pipe also serves as an overflow pipe that escapes wash water overflowing from the water storage tank,
The wash water overflowing from the water storage tank flows through the overflow pipe, flows into the jet-side water supply passage through a gap between the flapper valve and the flapper pipe that are biased by the gravity and directed in the vertical direction. The air bleed structure of the flush toilet according to 2. Furthermore, it has a rim water supply channel that supplies cleaning water to the rim spout,
The air bleed structure of a flush toilet according to claim 1 or 2, wherein the air vent pipe is connected from the jet side water supply path to the rim water supply path. The biasing means is a spring;
When the flapper valve receives air pressure in the initial stage of supplying the cleaning water, the biasing force of the spring is greater than the air pressure, the flapper valve is directed in the vertical direction, and the cleaning water is supplied to the jet side water supply passage. When the water pressure is received, the flap pressure is adjusted so that the water pressure overcomes the urging force of the spring and the flapper valve tilts diagonally,
The flapper pipe and the flapper valve are configured such that when the flapper valve is oriented in the vertical direction, a gap is formed so that air passes from the jet side water supply passage to the air vent pipe, and the flapper valve is The flushing structure of a flush toilet according to claim 1, wherein the flapper valve is formed so as to close the flapper pipe when tilted obliquely under the pressure of washing water.

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