JP2009097199A - Air intake device for toilet bowl drain passage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air intake device for a toilet bowl drain passage enabling the flushing of a toilet bowl to be well performed repeatedly. <P>SOLUTION: This air intake device 20 for a toilet bowl drain passage comprises: an intake tank 30 partitioned into a first compartment 32 and a second compartment 33, which communicates with a toilet bowl drain passage 5, through a first diaphragm 31; and a drive 40 for moving the first diaphragm 31 by taking the air in the first compartment 32. The drive 40 comprises a mobile body 42 and a moving device 46 for moving the mobil body 42. A first airtight compartment 47 the volume of which is varied by the movement of the mobile body 42 and which communicates with the first compartment 32 through a communication pipe 50 is formed in a case body 41. The moving device 46 comprises a casing 46K in which a second airtight compartment 48 is formed and an actuator. The casing 46K comprises a communication hole 46U for communicating the first airtight compartment 47 with the second airtight compartment 48 and a first opening/closing valve 46V for opening and closing the communication between the second airtight compartment 48 and the atmosphere. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a suction device for a toilet drainage channel.

  FIG. 7 of Patent Document 1 discloses a conventional toilet drainage intake device. This intake device includes a suction tank and a hydraulic drive device, and sucks air from a toilet drainage channel connected downstream of the water seal portion of the toilet body.

  The suction tank is provided with a first diaphragm movably in the vertical direction when installed in the housing, and is divided into an upper first chamber and a lower second chamber by the first diaphragm. The second chamber of the suction tank communicates with the toilet drainage channel. The hydraulic drive device includes a second diaphragm that moves upward when tap water is supplied through a water conduit, and a rod-like member that is attached to the upper surface of the second diaphragm and has a tip connected to the first diaphragm. have.

  In the intake device, when toilet flushing is started, tap water is supplied to the hydraulic drive device via the water conduit. Then, the second diaphragm moves upward, the rod-shaped member pushes the first diaphragm upward, and the air in the toilet drainage channel is sucked into the second chamber of the suction tank. For this reason, the toilet drainage channel can be filled with washing water, a siphon action can be generated, and filth can be discharged out of the toilet body. When toilet flushing is completed, tap water is discharged from the hydraulic drive device through the water conduit, and the first diaphragm is lowered. Thereby, the air intake device prepares for the next toilet bowl cleaning.

JP-A-5-311719

  However, in the above-described conventional intake device, the first diaphragm stops in the middle of the descent unless the tap water is completely discharged from the hydraulic drive device due to clogging of the water conduit. In this case, since the amount of air sucked from the toilet drainage channel is reduced at the time of the next toilet flushing, the toilet drainage channel is not filled with the washing water, and there is a possibility that the siphon action does not occur. If the siphon action does not occur, the filth is not discharged out of the toilet body and the toilet bowl may not be washed well.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the inhalation | air-intake apparatus of the toilet drainage channel which can perform toilet bowl washing | cleaning repeatedly and favorably.

A suction device for a toilet drainage channel according to a first aspect of the present invention is a suction device for a toilet drainage channel that sucks air from a toilet drainage channel connected to a downstream side of a water seal portion of a toilet body,
A first diaphragm is provided in the housing so as to be movable in a vertical direction at the time of installation, and is partitioned into an upper first chamber and a lower second chamber by the first diaphragm, and the second chamber is the toilet drainage channel. A suction tank communicated with the first tank, and a drive device for sucking the air in the first chamber and moving the first diaphragm upward,
The driving device includes a cylindrical case body extending in the axial direction, a moving body housed in the case body so as to be movable in the axial direction, and a moving device for moving the moving body,
In the case body, a volume is changed by the movement of the moving body, and a first hermetic chamber is formed which is communicated with the first chamber by a communication pipe.
The moving device includes a housing that forms a second hermetic chamber therein, and an actuator that is assembled to the housing and moves the moving body,
The casing communicates the second hermetic chamber with the atmosphere when the actuator is in a standby state and the communication hole that communicates the first hermetic chamber and the second hermetic chamber, and the actuator is in a moving state. In this case, a first on-off valve for closing the communication between the second hermetic chamber and the atmosphere is provided.

  In the suction device for a toilet drainage channel according to the first aspect of the present invention, when the actuator returns to the standby state, the moving body moves and the first diaphragm descends. In this case, the first on-off valve provided in the second hermetic chamber is opened, and the second hermetic chamber is communicated with the atmosphere. When the second hermetic chamber communicates with the atmosphere, the first hermetic chamber communicates with the atmosphere via the communication hole, and the first chamber communicates with the atmosphere via the communication tube. For this reason, air is reliably discharged from the first hermetic chamber and the first chamber is reliably filled with air. Therefore, the moving body and the first diaphragm are surely lowered to the lowered position without stopping during the lowering.

  Also, when the moving body that has been lowered to the lowered position is moved upward by the moving device, the actuator is driven from the standby state to the moving state, the first on-off valve is closed, and the communication between the second hermetic chamber and the atmosphere is Closed. For this reason, the air in the first chamber moves reliably into the first hermetic chamber, and the first diaphragm can be reliably raised to the raised position. Therefore, when performing toilet cleaning, air can be reliably sucked from the toilet drainage channel, and siphon action can be reliably generated.

  Therefore, the air intake device of the first invention can repeatedly and satisfactorily perform toilet cleaning.

A suction device for a toilet drainage channel according to a second aspect of the present invention is a suction device for a toilet drainage channel that sucks air from a toilet drainage channel connected to the downstream side of the water seal portion of the toilet body,
A first diaphragm is provided in the housing so as to be movable in a vertical direction at the time of installation, and is partitioned into an upper first chamber and a lower second chamber by the first diaphragm, and the second chamber is the toilet drainage channel. A suction tank communicated with the first tank, and a drive device for sucking the air in the first chamber and moving the first diaphragm upward,
The driving device includes a cylindrical case body extending in the axial direction, a moving body housed in the case body so as to be movable in the axial direction, and a moving device for moving the moving body,
In the case body, a volume is changed by the movement of the moving body, and a first hermetic chamber is formed which is communicated with the first chamber by a communication pipe.
The communicating pipe is provided with a small hole for communicating the inside of the communicating pipe with the atmosphere.

  In the toilet drainage intake device according to the second aspect of the present invention, when the moving body descends and thereby the first diaphragm descends, the first hermetic chamber and the first chamber communicate with the atmosphere through a small hole provided in the communication pipe. Therefore, air is reliably discharged from the first hermetic chamber, and the first chamber is reliably filled with air. For this reason, the moving body and the first diaphragm are surely lowered to the lowered position without stopping during the lowering.

  Further, when the moving body that has been lowered to the lowered position is moved upward by the moving device, the moving body suddenly moves upward, and the first hermetic chamber sucks a large amount of air at once. At this time, air also flows into the first hermetic chamber from the small hole provided in the communication pipe. However, since the amount is small, the first hermetic chamber reliably sucks the air in the first chamber, The diaphragm can be reliably raised to the raised position. For this reason, when toilet flushing is performed, air can be reliably sucked from the toilet drainage channel, and siphon action can be reliably generated.

  Therefore, the inhaler of the second invention can repeatedly and satisfactorily perform toilet cleaning.

An air intake device for a toilet drainage channel according to a third aspect of the present invention is an air intake device for a toilet drainage channel that sucks air from a toilet drainage channel connected to the downstream side of the water seal portion of the toilet body,
A first diaphragm is provided in the housing so as to be movable in a vertical direction at the time of installation, and is partitioned into an upper first chamber and a lower second chamber by the first diaphragm, and the second chamber is the toilet drainage channel. A suction tank communicated with the first tank, and a drive device for sucking the air in the first chamber and moving the first diaphragm upward,
The driving device includes a cylindrical case body extending in the axial direction, a moving body housed in the case body so as to be movable in the axial direction, and a moving device for moving the moving body,
In the case body, a volume is changed by the movement of the moving body, and a first hermetic chamber is formed which is communicated with the first chamber by a communication pipe.
The communication pipe is normally provided with a second on-off valve that communicates the communication pipe with the atmosphere, and closes the communication between the communication pipe and the atmosphere when the pressure in the communication pipe becomes lower than the atmospheric pressure. Features.

  In the toilet drainage intake device according to the third aspect of the present invention, when the moving body is lowered and the first diaphragm is thereby lowered, the pressure in the communication pipe does not become lower than the atmospheric pressure, so the second on-off valve is opened. . For this reason, since the first hermetic chamber and the first chamber communicate with the atmosphere through the second on-off valve provided in the communication pipe, air is reliably discharged from the first hermetic chamber and Is reliably filled with air. Therefore, the moving body and the first diaphragm are surely lowered to the lowered position without stopping during the lowering.

  Further, when the moving body that has been lowered to the lowered position is moved upward by the moving device, the pressure in the communication pipe becomes smaller than the atmospheric pressure, so the on-off valve is closed and the communication between the communication pipe and the atmosphere is closed. . For this reason, the air in the first chamber can surely move into the first hermetic chamber, and the first diaphragm can be more reliably raised to the raised position. Therefore, when performing toilet cleaning, air can be reliably sucked from the toilet drainage channel, and siphon action can be reliably generated.

  Therefore, the inhaler of the third invention can repeatedly and satisfactorily perform toilet cleaning.

  In the intake device of the third invention, the second on-off valve can close the communication between the communication pipe and the atmosphere when the pressure in the communication pipe falls below a specific pressure from the atmospheric pressure.

  In this case, it is possible to avoid closing the second on-off valve other than during toilet cleaning. That is, even if the pressure inside the communication pipe becomes slightly lower than the atmospheric pressure due to a temperature change or the like, the second on-off valve is not closed, and the communication between the communication pipe and the atmosphere is maintained. For this reason, when the pressure in the communication pipe is slightly smaller than the atmospheric pressure, the second on-off valve closes, so that the first diaphragm moves upward and the second chamber is located in the toilet drainage channel. It is possible to prevent the wash water stored in the water seal portion of the toilet body from flowing into the toilet drainage channel and cutting off the seal water.

  The specific pressure is larger than the pressure range in which the pressure in the communication pipe fluctuates due to a temperature change or the like when the moving body of the intake device is located at the lowered position, and the moving body of the intake device rises during toilet cleaning. Accordingly, the pressure is appropriately determined within a range smaller than the negative pressure generated in the communication pipe. For this reason, at the time of toilet flushing, the second on-off valve is reliably closed, the air in the first chamber can be moved into the intake chamber, and the first diaphragm can be more reliably raised to the raised position. Therefore, when toilet flushing is performed, air can be reliably sucked from the toilet drainage channel, the siphon action can be reliably generated, and toilet flushing can be performed satisfactorily.

  Hereinafter, Embodiments 1 to 3 in which the toilet device drainage intake device of the first to third inventions is embodied as a Western style flush toilet will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the Western-style flush toilet of Example 1 includes a toilet body 1 and a toilet cleaning device S. Illustration of the toilet seat and toilet lid is omitted.

  The toilet body 1 has a rim 3 on the upper inner periphery of the toilet bowl 2. Further, the toilet body 1 is formed with an upward flow path 2 </ b> A extending upward from the lower end of the toilet bowl 2, and a water seal 4 is formed below the toilet bowl 2. The ascending flow path 2A of the toilet body 1 is connected to a connecting pipe, and a toilet drainage channel 5, a retention portion 6 and a drainage port 7 are formed in the connecting pipe.

  The toilet flushing device S includes a flush water supply device 10 and an intake device 20 for the toilet drainage channel 5.

  The flush water supply device 10 is connected to a stop cock V1 attached to a water pipe drawn from a floor surface or a wall surface of a toilet room in which the toilet body 1 is installed, and is connected to a rim 3 of the toilet body 1. 11. The water guide pipe 11 is provided with a strainer device 12, a constant flow valve 13, an on-off valve V2, and a vacuum breaker 14 that incorporate a water stop valve and a strainer in order from the upstream side.

  The suction device 20 of the toilet drainage channel 5 includes a suction tank 30 provided with a first diaphragm 31 movable in a vertical direction when installed in a housing 30H, and a drive device 40 that moves the first diaphragm 31 upward. It has. Although not shown, the suction tank 30 and the driving device 40 are surrounded by a side wall of the toilet body 1 and are disposed in a storage space formed behind the toilet bowl 2.

  The inside of the suction tank 30 is partitioned by a first diaphragm 31 into an upper first chamber 32 and a lower second chamber 33. The first chamber 32 and the second chamber 33 are airtight. The first chamber 32 is in communication with a first hermetic chamber 47 of the electromagnetic drive device 40 described later via a communication pipe 50. The second chamber 33 is communicated with the toilet drainage channel 5 via the suction pipe 60.

  The drive device 40 includes a cylindrical case main body 41 extending in the vertical direction, a moving body 42 accommodated in the case main body 41 so as to be movable in the vertical direction, and a moving device 46 provided at the lower end of the case main body 41. Have. In the case main body 41, a first hermetic chamber 47 is formed, which is surrounded by the moving body 42 and the moving device 46 and whose volume changes as the moving body 42 moves.

  The case main body 41 has an opening 41 </ b> A through which air can enter and exit at the upper end surface. A filter is attached to the opening 41 </ b> A so that dust and the like do not enter the case main body 41. The cylindrical case body 41 extending in the vertical direction has an open lower end. The upper portion of the moving device 46 is inserted into the opening from below, and the upper portion of the moving device 46 is accommodated in the case main body 41. The case main body 41 and the moving device 46 are connected so as to maintain airtightness with a packing P interposed therebetween.

  A communication pipe 50 is connected to the side wall of the case main body 41, and the first hermetic chamber 47 is connected to the first chamber 32 of the suction tank 30 via the communication pipe 50.

  The moving body 42 is attached to the upper surface of the second diaphragm 43 having flexibility, the first guide 44 attached to the lower surface of the central portion 43C of the second diaphragm 43, and the central portion 43C of the second diaphragm 43. The second guide 45 is configured. The second diaphragm 43 extends in the vertical direction along the inner peripheral surface of the case main body 41, and extends outward from one end of the cylindrical portion 43A so as to be sandwiched and fixed by the inner peripheral surface of the case main body 41. The flange portion 43B and a central portion 43C extending inward from the other end of the cylindrical portion 43A are formed.

  The first guide 44 includes an upper wall 44A attached to the lower surface of the central portion 43C of the second diaphragm 43, and a side wall 44B extending downward from the periphery of the upper wall 44A and extending downward along the inner peripheral surface of the case body 41. A downward cup shape formed from a flange 44C extending outward from the outer peripheral edge of the lower end of the side wall 44B. The upper wall 44 </ b> A has a similar shape that is slightly smaller than the central portion 43 </ b> C of the second diaphragm 43. The first guide 44 is located at the lower part in the case main body 41 in the lowered position.

  The second guide 45 is formed of a bottom wall 45A attached to the upper surface of the central portion 43C of the second diaphragm 43, and a side wall 45B extending in the vertical direction from the periphery of the bottom wall 45A and extending along the inner peripheral surface of the case body 41. Has been. The bottom wall 45A has a similar shape larger than the upper wall 44A of the first guide 44.

  The moving body 42 can be smoothly raised and lowered in the case main body 41 by the first guide 44 and the second guide 45. That is, when the moving body 42 moves up and down, the moving body 42 moves along the inner peripheral surface of the case body 41 by the side wall 44B and the flange 44C of the first guide 44 and the side wall 45B of the second guide 45. Moving. For this reason, the central portion 43C of the second diaphragm 43 can move in the vertical direction while maintaining a horizontal state.

  Further, when the moving body 42 moves up, the second diaphragm 43 is deformed so as to cover the outer peripheral surface of the side wall 44B of the first guide 44, as shown in FIG. On the other hand, when the moving body 42 descends, as shown in FIG. 1, the second diaphragm 43 is deformed while being pressed by the lower edge of the side wall 45 </ b> B of the second guide 45. For this reason, since the 2nd diaphragm 43 does not slide with respect to the internal peripheral surface of the case main body 41, the 2nd diaphragm 43 cannot be worn easily and the airtightness of the 1st airtight chamber 47 is maintained over a long period of time. Therefore, this drive device 40 can exhibit excellent durability. In addition, the maintenance work of the driving device 40 such as replacement of the second diaphragm 43 can be reduced.

  When the moving body 42 is lowered, the upper portion of the moving device 46 is housed inside the first guide 44 as shown in FIG. For this reason, size reduction of the electromagnetic drive device 40 can be achieved, and the electromagnetic drive device 40 can be easily disposed in the storage space provided behind the toilet bowl 2.

  The moving device 46 includes a housing 46K that forms a second hermetic chamber 48 therein, and an actuator that is assembled to the housing 46K and moves the moving body 42. A communication hole 46 </ b> U that communicates the first hermetic chamber 47 and the second hermetic chamber 48 is provided on the upper surface of the housing 46 </ b> K. A first opening / closing valve 46V biased by a spring 46S is provided on the lower surface of the housing 46K in a direction in which the valve body 46T is closed.

  The actuator has a motor 46M, a screw shaft 46A rotated by the motor 46M, and a nut portion fitted on the screw shaft 46A at the lower end, and the upper end protrudes from above the moving device 46, and a disk-shaped push-up plate 46C is fixed. And a pressing plate 46D extending laterally from the lower end of the rod-like body 46B. The upper surface of the push-up plate 46C is not fixed to the moving body 42. When the push-up plate 46C is raised, the movable body 42 is pushed upward, and when the push-up plate 46C is lowered, the movable body 42 is lowered by its own weight. When the pressing plate 46D is in the lowered position, that is, when the actuator is in a standby state, the pressing plate 46D pushes down the valve body 46T of the first on-off valve 46V and opens the first on-off valve 46V. The second hermetic chamber 48 communicates with the atmosphere. As shown in FIG. 2, when the push-down plate 46D moves to the raised position, that is, when the actuator is in the moving state, the valve body 46T of the first on-off valve 46V is closed by the biasing force of the spring 46S. The second hermetic chamber 48 is closed from communication with the atmosphere.

  One end of a pulling chain 49 that can manually move the moving body 42 upward is attached to the upper surface of the central portion of the moving body 42, and the other end of the chain 49 is the upper end surface of the case body 41. It is pulled out from the outside.

  The toilet flushing of the Western-style flush toilet of Example 1 is performed as follows.

  When the user operates a toilet flushing switch of a Western style flush toilet (not shown), first, the on-off valve V2 of the flush water supply device 10 is opened. As a result, washing water is supplied from the water conduit 11 to the rim 3 and flows down while turning along the inner surface of the toilet bowl 2, and a swirling flow is formed in the toilet bowl 2. This swirling flow collects filth on the center side of the toilet bowl 2 and the toilet paper loosens and blends with the washing water, and then disperses in the water. If a siphon action occurs later, the filth and the toilet paper are smooth. It is discharged outside the toilet body 1.

  When the washing water is supplied to the toilet bowl 2 and the water level in the toilet bowl 2 becomes sufficiently high, the driving device 40 is driven. That is, as shown in FIG. 2, the motor 46M of the moving device 46 is driven, the push-up plate 46C of the rod-like body 46B is raised to a predetermined height at a predetermined speed, and the moving body 42 is pushed up to a predetermined height. As a result, the volume of the first hermetic chamber 47 is expanded at a predetermined speed to a predetermined amount. At this time, since the push-down plate 46D moves to the raised position, the valve body 46T of the first on-off valve 46V is closed by the urging force of the spring 46S, and the second hermetic chamber 48 closes communication with the atmosphere. For this reason, the air in the 1st chamber 32 moves to the 1st airtight chamber 47 reliably, and can raise the 1st diaphragm 31 to a raise position reliably. Thereby, air is sucked into the second chamber 33 from the toilet drainage channel 5. At this time, washing water overflowing from the ascending flow path 2A flows into the staying portion 6 and the space between the toilet drainage channel 5 and the drain outlet 7 is completely sealed, so the toilet drainage channel 5 is cleaned. Water becomes full, siphon action occurs, and filth is discharged out of the toilet body 1.

  After a siphon action occurs and a predetermined time has elapsed, the motor 46M is rotated in the reverse direction to lower the push-up plate 46C of the rod-like body 46B. Then, the moving body 42 is lowered by its own weight, and the air in the first hermetic chamber 47 moves to the first chamber 32 of the suction tank 30 through the communication pipe 50, so that the first diaphragm 31 is lowered. When the pressing plate 46D returns to the lowered position, the pressing plate 46D pushes down the valve body 46T of the first on-off valve 46V and opens the first on-off valve 46V, so that the second hermetic chamber 48 communicates with the atmosphere. . For this reason, air is reliably discharged from the first hermetic chamber 47 and the first chamber 32 is reliably filled with air. Therefore, the moving body 42 and the first diaphragm 31 are surely lowered to the lowered position without stopping in the middle of the lowering.

  When the first diaphragm 31 is lowered, air is discharged from the second chamber 33 into the toilet drainage channel 5, so that the toilet drainage channel 5 cannot be maintained in a full state with the washing water, and the siphon action ends. Thereafter, the cleaning water is supplied from the cleaning water supply device 10 so that the water sealing part 4 having a predetermined water level is formed in the toilet bowl 2.

  As described above, in the intake device 20 according to the first embodiment, air can be reliably sucked from the toilet drainage channel 5 to generate a siphon action. Further, when the toilet bowl cleaning is completed, the moving body 42 and the first diaphragm 31 are lowered to the lowered position in preparation for the next toilet bowl cleaning. For this reason, also in the next toilet flushing, the intake device 20 can reliably suck air from the toilet drainage channel 5 and generate a siphon action.

  Therefore, the air intake device according to the first embodiment can perform toilet cleaning repeatedly and favorably.

  Further, when the motor 46M cannot be driven due to a power failure or the like, the user manually opens the on-off valve V2, and then the user manually pulls up the chain 49, thereby moving the moving body 42 upward. Move to. As a result, the first diaphragm 31 of the suction tank 30 moves upward and air is sucked from the toilet drainage channel 5, so that the toilet drainage channel 5 is filled with washing water and siphon action occurs, so that dirt, etc. It can be discharged out of the toilet body 1.

  As shown in FIGS. 3 and 4, the Western-style flush toilet of Example 2 is provided with a small hole 51 in the middle portion of the communication pipe 50 for communicating the inside of the communication pipe 50 with the atmosphere. Further, the moving device 46 does not communicate the interior of the housing 46 </ b> K with the first hermetic chamber 47. Further, the housing 46K does not have a structure for opening and closing communication between the inside of the housing 46K and the atmosphere. Since the configuration other than this is the same as that of the first embodiment, the same configuration is denoted by the same reference numeral, and detailed description thereof is omitted.

  As shown in FIG. 3, in the air intake device 100 of the second embodiment, when the moving body 42 is lowered and the first diaphragm 31 is thereby lowered, the first airtight chamber 47 and the first chamber 32 are provided in the communication pipe 50. Since the air is communicated with the atmosphere through the small hole 51, the air is surely discharged from the first hermetic chamber 47 and the first chamber 32 is reliably filled with air. For this reason, the moving body 42 and the 1st diaphragm 31 fall reliably to a descent | fall position, without stopping in the middle of a fall.

  In addition, as shown in FIG. 4, when the moving body 42 is moved upward by the moving body device 46, when the first diaphragm 31 rises, the air K is supplied from the small hole 51 provided in the communication pipe 50. 1 The air flows into the airtight chamber 47, but the amount is small, so the air in the first chamber 32 is surely sucked by the first airtight chamber 47, and the first diaphragm 31 is reliably raised to the raised position at a predetermined speed. Can be made. For this reason, when toilet flushing is performed, air can be reliably sucked from the toilet drainage channel, and siphon action can be reliably generated.

  As described above, the intake device 100 of the second embodiment can also reliably suck air from the toilet drainage channel 5 and generate a siphon action. Further, when the toilet bowl cleaning is completed, the moving body 42 and the first diaphragm 31 are lowered to the lowered position in preparation for the next toilet bowl cleaning. For this reason, also in the next toilet flushing, the air intake device 100 can reliably suck air from the toilet drainage channel 5 and generate a siphon action.

  Therefore, the air intake apparatus according to the second embodiment can perform the toilet cleaning repeatedly and favorably.

  As shown in FIGS. 5 and 6, the Western-style flush toilet of Example 3 always connects the inside of the communication pipe 50 and the atmosphere to the middle part of the communication pipe 50, and the pressure in the communication pipe 50 is atmospheric pressure. There is provided a second on-off valve 52 having a built-in spring 52A that closes communication between the communication pipe 50 and the atmosphere when the pressure is lower than a specific pressure. Since the other configuration is the same as that of the first and / or second embodiment, the same reference numeral is given to the same configuration, and the detailed description is omitted.

  As shown in FIG. 5, in the intake device 200 of the third embodiment, when the moving body 42 is lowered and the first diaphragm 31 is thereby lowered, the pressure in the communication pipe 50 does not become lower than the atmospheric pressure. The on-off valve 52 is open, and the communication pipe 50 communicates with the atmosphere. For this reason, air is reliably discharged from the first hermetic chamber 47, and the first chamber 32 is reliably filled with air. Therefore, the moving body 42 and the first diaphragm 31 are surely lowered to the lowered position without stopping in the middle of the lowering.

  Further, as shown in FIG. 6, when the first diaphragm 31 is lifted by moving the moving body 42 upward by the moving device 46, the volume of the first hermetic chamber 47 is increased at a predetermined speed at a predetermined amount. Therefore, the pressure in the communication pipe 50 becomes a specific pressure or lower than the atmospheric pressure. Therefore, the communication between the communication pipe 50 and the atmosphere is closed by moving against the biasing force of the spring in which the valve body of the second on-off valve 52 is built and closing. Therefore, the air in the first chamber 32 can surely move into the first hermetic chamber 47, and the first diaphragm 31 can be reliably raised to the raised position. For this reason, when toilet flushing is performed, air can be reliably sucked from the toilet drainage channel, and siphon action can be reliably generated.

  Thus, the intake device 200 of Example 3 can also reliably suck air from the toilet drainage channel 5 and generate a siphon action. Further, when the toilet bowl cleaning is completed, the moving body 42 and the first diaphragm 31 are lowered to the lowered position in preparation for the next toilet bowl cleaning. For this reason, in the next toilet flushing, the intake device 200 can reliably suck air from the toilet drainage channel 5 and generate a siphon action.

  Therefore, the inhaler of Example 3 can also perform toilet cleaning repeatedly and favorably.

  Further, even if the pressure inside the communication pipe 50 becomes slightly smaller than the atmospheric pressure due to a temperature change or the like, the second on-off valve 52 does not close, and the communication between the communication pipe 50 and the atmosphere is maintained. For this reason, when the pressure in the communication pipe 50 is slightly lower than the atmospheric pressure, the second opening / closing valve 52 closes, so that the first diaphragm 31 moves upward and the second chamber opens. It is possible to suck the air in the toilet drainage channel 5 and prevent the washing water stored in the water seal portion 4 of the toilet body 1 from flowing into the toilet drainage channel 5 side and the sealing water from being cut off.

  In the above, the first to third inventions have been described according to the first to third embodiments. However, the present invention is not limited to the above-described embodiments, and can be appropriately modified and applied without departing from the spirit of the invention. Needless to say, it can be done.

  For example, the spring 52 of the second on-off valve 52 of the third embodiment can be omitted. In this case, since the second on-off valve 52 closes the communication between the communication pipe 50 and the atmosphere when the pressure in the communication pipe 50 becomes lower than the atmospheric pressure, the air in the first chamber 32 is kept in the first airtight chamber during toilet cleaning. The first diaphragm 31 can be reliably moved up to the raised position. For this reason, air can be reliably attracted | sucked from a toilet drainage channel and a siphon effect | action can be produced | generated reliably.

  Further, the valve body of the second on-off valve 52 of the third embodiment can be formed into a spherical shape. In this case, the spring 52A need not be built in.

  The present invention can be used for a Western style flush toilet.

It is a schematic diagram of a Western style flush toilet equipped with an air intake device for the toilet drainage channel of Example 1. It is a schematic diagram which shows the toilet bowl washing | cleaning state of the Western-style flush toilet bowl provided with the suction device of the toilet drainage channel of Example 1. FIG. It is a schematic diagram of the Western-style flush toilet bowl provided with the suction device of the toilet drainage channel of Example 2. It is a schematic diagram which shows the toilet bowl washing | cleaning state of the western-style flush toilet bowl provided with the suction device of the toilet drainage channel of Example 2. FIG. It is a schematic diagram of the western style flush toilet equipped with the air intake apparatus of the toilet drainage channel of Example 3. It is a schematic diagram which shows the toilet bowl washing | cleaning state of the western style flush toilet bowl provided with the suction device of the toilet drainage channel of Example 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Toilet body 4 ... Water seal part 5 ... Toilet drain channel 20, 200 ... Intake device 30 ... Suction tank 30H ... Housing 31 ... 1st diaphragm 32 ... 1st chamber 33 ... 2nd chamber 40 ... Drive device 41 ... Case body 42 ... moving body 46 ... moving device 46K ... housing 46M, 46A, 46B, 46C, 46D ... actuator (46M ... motor, 46A ... screw shaft, 46B ... rod-like body, 46C ... push-up plate, 46D ... pressing plate)
46V ... 1st on-off valve 47 ... 1st airtight chamber 48 ... 2nd airtight chamber 50 ... Communication pipe 51 ... Small hole 52 ... 2nd on-off valve

Claims (4)

In the intake device of the toilet drainage channel that sucks air from the toilet drainage channel connected to the downstream side of the water seal part of the toilet body,
A first diaphragm is provided in the housing so as to be movable in a vertical direction at the time of installation, and is partitioned into an upper first chamber and a lower second chamber by the first diaphragm, and the second chamber is the toilet drainage channel. A suction tank communicated with the first tank, and a drive device for sucking the air in the first chamber and moving the first diaphragm upward,
The driving device includes a cylindrical case body extending in the axial direction, a moving body housed in the case body so as to be movable in the axial direction, and a moving device for moving the moving body,
In the case body, a volume is changed by the movement of the moving body, and a first hermetic chamber is formed which is communicated with the first chamber by a communication pipe.
The moving device includes a housing that forms a second hermetic chamber therein, and an actuator that is assembled to the housing and moves the moving body,
The casing communicates the second hermetic chamber with the atmosphere when the actuator is in a standby state and the communication hole that communicates the first hermetic chamber and the second hermetic chamber, and the actuator is in a moving state. If there is, the first on-off valve for closing the communication between the second hermetic chamber and the atmosphere is provided. In the intake device of the toilet drainage channel that sucks air from the toilet drainage channel connected to the downstream side of the water seal part of the toilet body,
A first diaphragm is provided in the housing so as to be movable in a vertical direction at the time of installation, and is partitioned into an upper first chamber and a lower second chamber by the first diaphragm, and the second chamber is the toilet drainage channel. A suction tank communicated with the first tank, and a drive device for sucking the air in the first chamber and moving the first diaphragm upward,
The driving device includes a cylindrical case body extending in the axial direction, a moving body housed in the case body so as to be movable in the axial direction, and a moving device for moving the moving body,
In the case body, a volume is changed by the movement of the moving body, and a first hermetic chamber is formed which is communicated with the first chamber by a communication pipe.
The communication pipe is provided with a small hole for communicating the inside of the communication pipe with the atmosphere. In the intake device of the toilet drainage channel that sucks air from the toilet drainage channel connected to the downstream side of the water seal part of the toilet body,
A first diaphragm is provided in the housing so as to be movable in a vertical direction at the time of installation, and is partitioned into an upper first chamber and a lower second chamber by the first diaphragm, and the second chamber is the toilet drainage channel. A suction tank communicated with the first tank, and a drive device for sucking the air in the first chamber and moving the first diaphragm upward,
The driving device includes a cylindrical case body extending in the axial direction, a moving body housed in the case body so as to be movable in the axial direction, and a moving device for moving the moving body,
In the case body, a volume is changed by the movement of the moving body, and a first hermetic chamber is formed which is communicated with the first chamber by a communication pipe.
The communication pipe is normally provided with a second on-off valve that communicates the communication pipe with the atmosphere, and closes the communication between the communication pipe and the atmosphere when the pressure in the communication pipe becomes lower than the atmospheric pressure. Features a toilet drainage intake device.   The toilet device drainage intake device according to claim 3, wherein the second open / close valve closes the communication between the communication pipe and the atmosphere when the pressure in the communication pipe becomes a specific pressure lower than the atmospheric pressure.

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