JP2000309974A - Flow-path changeover device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flow-path changeover device capable of automatically controlling the opening and closing of an open-close valve without resulting in an increase in cost. SOLUTION: Open-close valves 15, 16 in which valve bodies V are opened and closed are installed to each of a plurality of the flow paths Q, R. Cams 24, 25 or the like transmitting mechanical operating force for opening and closing each valve body V are mounted at open-close valve 15, 16 respectively at that time, a motor 20 imparting mechanical operating force to each open-close valve 15, and 16 through the cams 24, 25 or the like respectively, and the flow- path changeover valve is constituted so that the output periods of mechanical operating force from the motor 20 to each cam 24, 25 or the like have fixed time lags at every cam 24, 25 or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for controlling the opening and closing of a valve element of each of a plurality of flow paths when the valve element is mechanically opened and closed. The present invention relates to a device configured to be able to be performed by means.

[0002]

2. Description of the Related Art For example, in a forced siphon toilet,
A two-line flow passage is provided, a flow passage for supplying wash water to the toilet bowl through the rim water passage, and a flow passage for supplying wash water directly from the jet hole in the discharge pipe. Conventionally, a method has been proposed in which a siphon effect is forcibly generated by controlling the timing of water supply to a road so as to be shifted in time.

FIG. 17 shows an example of a forced siphon toilet 1 having such a flow path switching device. In this channel switching device,
Two branch water supply pipes Q, R are connected via a constant flow valve L in the middle of a main water supply pipe P connected to a water supply source, and each branch water supply pipe Q,
R is provided with opening valves M and N, and one branch water supply pipe Q
Is connected to the rim water channel 2 and the other branch water supply pipe R is connected to the toilet bowl 4.
Is connected to the jet hole 5 at the bottom of the.

In such a conventional flow switching device, when cleaning the forced siphon toilet 1, the cleaning water is supplied from the branch water supply pipe Q to the rim water passage 2 side by opening only one of the opening valves M first. Then, the toilet bowl 4 is washed. Next, the opening and closing valve M is closed, and the other opening and closing valve N is opened, and the washing water is jetted from the jet hole 5 into the discharge pipe 3 through the branch water supply pipe R. As a result, the discharge pipe 3 is quickly filled with water, so that a siphon action is quickly generated. At a timing when the washing water is discharged and the siphon action ends, the opening valve N is closed to stop the water supply to the branch water supply pipe R on the jet hole 5 side, and the opening valve M is opened again to open the rim water passage. Wash water is supplied into the toilet bowl 4 from the branch water pipe Q on the second side, and the toilet 1
Form a water seal inside.

[0005]

However, in the above-described conventional flow path switching device, if the opening and closing of the opening valves M and N provided in the branch water supply pipes Q and R are controlled automatically, the opening valve M ,
It is necessary that N be motorized valves that are each driven by a motor. In this case, in the flow path switching device using two opening / closing valves, two motors are also required, resulting in an increase in cost.

The present invention has been made in view of the above-mentioned conventional circumstances, and it is an object of the present invention to provide a flow path switching device capable of automatically controlling the opening and closing of an opening valve without increasing costs. It is an issue.

[0007]

In a flow path switching device according to the present invention, an opening valve for mechanically opening and closing a valve element is provided in each of a plurality of flow paths, and each of the valve elements is opened and closed. Transmission means for transmitting a mechanical operating force for operating is provided for each of the on-off valves, and operating means for applying a mechanical operating force to each of the open / close valves through the transmission means is provided. The output timing of the mechanical operation force to each of the transmission means is configured to have a predetermined time lag for each of the transmission means.

With this configuration, the opening and closing of the individual opening and closing valves provided in the plurality of flow paths can be operated with a time lag by one operating means. For this reason, the opening and closing of the opening and closing valve can be automatically controlled without increasing the cost. In the flow path switching device of the present invention, the operating means is a motor, and as each transmitting means, a plurality of cams having different phases attached to a rotating shaft directly or indirectly driven to rotate by the motor; A valve attached to a valve shaft connected to the valve body of each valve and configured to receive an operating force that can come into contact with each cam can be employed. When the operating means is a motor, it is desirable to provide a backup power supply for rotating each cam to a predetermined position in the event of a power failure.

In the flow path switching device of the present invention, a manual operating means capable of manually rotating the rotating shaft to which the cam is attached can be provided. In this case, it is possible to manually perform the opening and closing operation of the opening and closing valve. Further, in the flow path switching device of the present invention, a clutch mechanism is provided between the output shaft of the motor and the rotation shaft to which each cam is attached, and the operating force of the manual operation means is transmitted to the output section of the clutch mechanism. It is preferred that this be done. With this configuration, the operation force transmission path from the motor and the operation force transmission path from the manual operation unit can be shared, so that the structure can be simplified.

In the flow path switching device of the present invention, a worm gear and a worm wheel can be used as a transmission mechanism for transmitting a rotational operation force from the output portion of the clutch mechanism to the rotary shaft on which each cam is mounted. As a result, it is possible to suppress sudden rotation of the cam. In the conventional channel switching device,
If the cleaning water is to be supplied by manual operation, another piping system must be provided, and there is a problem that the configuration becomes complicated. In this regard, in the channel switching device of the present invention,
Preferably, the operating means comprises a manual member. In this case, a plurality of cams of different phases attached to a rotating shaft that is manually or directly driven to rotate, and attached to a valve shaft connected to each valve element of each open / close valve, A transmission means is constituted by a receiving member of an operating force which can be contacted, and an adjusting means for adjusting a transmission time length of a rotation operation force input from a manual member to a rotation shaft to which each cam is attached to a predetermined time is provided. . With such a configuration,
By adjusting the transmission time of the operating force input from the manual member, the rotation speed of the cam can be adjusted to a required speed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows, for example, water supply to a rim water passage 2 and a jet hole 5 in place of a conventional flow passage switching device of a forced siphon toilet 1 shown in FIG. An embodiment is shown in which the present invention is applied to a flow path switching device 10 that forcibly generates a siphon action by shifting the time. Other configurations of the forced siphon toilet 1 are the same as the conventional one.

The flow switching device 10 of the present embodiment is attached to a valve device. This valve device supplies washing water supplied from a water supply source via a valve 11 and a primary water supply pipe 12 to a rim water passage 2 and a jet hole 5. This valve device comprises an opening and closing valve 15 for the rim water passage 2 and an opening and closing valve 16 for the jet hole 5. The opening / closing valves 15 and 16 have a built-in constant flow rate mechanism, or the opening / closing valves 15 and 1
It is desirable that the valve 6 is not a built-in constant flow mechanism and the valve 11 is a constant flow valve.

An output gear 21 is fixed to an output shaft 20 a of a motor 20, and a cam 2 is attached to a rotation shaft 23 that is rotationally driven via a clutch 22.
4 and 25 are provided integrally, and the cams 24 and 25 come into contact with the inner surfaces of cam receiving boxes 26 and 27 as receiving tools attached to the ends of the respective valve shafts 17 and 18 of the opening / closing valves 15 and 16. Is configured.

The clutch 22 is a one-way clutch. An output gear 21 fixed to the motor 20 has an input gear 22a urged by a spring 22c of the clutch 22.
It is connected to the. On the other hand, the output gear 22 of the clutch 22
The rotating shaft 23 is connected to b, and a manual operation unit described later is connected to b. In the present embodiment, the valve shafts 17 and 18 are protruded in parallel from the side-by-side opening and closing valves 15 and 16, respectively, and the rotary shaft 23 is disposed at right angles to these valve shafts 17 and 18. The switching device 10 can be made compact.

As shown in FIG. 2A, the rim water passage 2
Cam 24 is formed so as to project bidirectionally symmetrically with respect to the rotating shaft 23. On the other hand, as shown in (B), the cam 25 for the jet hole 5 is formed so as to protrude only in one direction with respect to the rotating shaft 23. In addition, the cam 24 for the jet hole 5 and the cam 25 for the rim water passage 2 have a rotating shaft 2 so that the protruding directions are shifted from each other by 90 degrees.
3.

When the cams 24 and 25 are rotated together with the rotating shaft 23 by the motor 20 shown in FIG.
7, the valve shafts 17 and 18 move in the axial direction,
Opening operations 5 and 16 are performed. As the motor 20, a motor whose rotation angle can be controlled to a predetermined angle, for example, a geared motor, a stepping motor or the like is used. Further, a rotary encoder E for monitoring the amount of rotation of the rotating shaft 23 and a control device C for controlling the operation of the motor 20 are provided at appropriate places. A window f is formed in the rotary encoder E, and the rotation angle, that is, the cam 2 is formed.
It is preferable to be able to visually confirm the rotation positions of the rotations 4 and 25.

Opening / closing valve 1 accompanying rotation of cam 24 shown in FIG.
As shown in FIG. 2 (A), the washing water supplied from the primary water supply pipe 12 to the rim water channel 2 by opening and closing
3, flows into the opening / closing valve 15, and is supplied to the branch water supply pipe Q for the rim water passage 2 via the vacuum breaker 19. On the other hand, as shown in FIG. 1B, the cleaning water supplied to the jet hole 5 by opening the opening valve 16 accompanying the rotation of the cam 25 shown in FIG. It flows into the valve opening 16 and is supplied to the branch water supply pipe R for the jet hole 5 via the vacuum breaker 19.

As shown in FIG. 1, a manual operation mechanism for manually operating the opening and closing of the opening and closing valves 15 and 16 includes a handle 40 as shown in FIG.
The gear 50 is connected to the rotating shaft 41 connected to the
0 is engaged with a gear 51 having a different gear ratio.
Is connected to the output gear 22b. By using the clutch 22 as a one-way clutch, the rotation operation of the rotation shaft 23 by the manual operation mechanism can be freely performed on the motor 20. Therefore, a manual operation does not exert a load on the motor 20 such as a geared motor.

Next, the operation of the flow switching device 10 will be described with reference to FIGS.
This will be described with reference to FIG. In each of the drawings, FIG. 1A shows an opening / closing valve 15 for the rim water passage 2 corresponding to a cross-sectional view taken along line II-II in FIG. 1, and FIG. 1B shows II-I in FIG. The opening / closing valve 16 for water flow of the jet hole 5 corresponding to the sectional view taken along the line is shown. FIG. 2 shows an initial state, that is, a state of non-water passage in which both the open / close valves 15 and 16 are closed. In the figure, the valve bodies V in the open / close valves 15 and 16 are urged in a seating direction by a spring S to close the flow path.

In the above state, when the toilet cleaning is instructed,
The control device C shown in FIG. 1 drives the motor 20 to rotate the cams 24 and 25 counterclockwise by 90 degrees from the state of FIG. 2 to the state of FIG. Then, as shown in FIG. 3A, only the cam receiving box 26 on the rim water passage 2 side is
4 rotates to the right in the drawing, and the valve body V is unseated via the valve shaft 17. As a result, the washing water flows from the primary water supply pipe 12 into the opening valve 15 through the inflow port 13 and is supplied to the rim water passage 2 via the vacuum breaker 19, and as a result, the washing water is supplied to the toilet bowl 4 And the toilet bowl 4 is first washed.

Washing of the toilet bowl 4 is set to be performed only for a preset time (for example, 7 seconds). That is, if a certain time has elapsed from the start of washing the toilet bowl 4, the control device C shown in FIG.
The cams 24 and 25 are further moved counterclockwise from the state of FIG.
Rotate by 0 degrees to obtain the state shown in FIG. As a result, FIG.
As shown in (B), since the cam 25 presses the cam receiving box 27 on the jet hole 5 side to move it to the right, the valve stem 18
The valve body V is unseated, and the on-off valve 16 becomes permeable. As a result, the washing water is supplied to the jet hole 5 and the ejection to the discharge pipe 3 is started. At the same time, as shown in FIG. 4A, in order to stop the projection of the cam 24 from pressing the cam receiving box 26 on the rim water passage 2 side, the valve body V of the on-off valve 15 is stopped.
Is seated by being biased by the spring S, and the supply of water to the rim water passage 2 is stopped.

The supply of the washing water to the jet hole 5 takes a time required for forcibly generating a siphon action (for example,
(About 7 seconds). Therefore, if a certain period of time has elapsed since the start of water supply to the jet hole 5, the motor 20 shown in FIG.
4, 25 are rotated by 90 degrees to obtain the state shown in FIG. At this time, as shown in FIG. 5B, the valve body V of the on-off valve 16 is seated and the supply of water to the jet hole 5 is stopped, and as shown in FIG. V leaves and rim waterway 2
From the washing water is supplied to the toilet bowl 4. In this way, after the washing water is discharged due to the occurrence of the siphon action, the washing water is replenished from the rim water passage 2 to the toilet bowl 4, whereby the toilet bowl 4
A water seal can be formed therein. In the step of replenishing the toilet bowl 4 with the washing water through the rim water channel 2, it may be maintained for a certain time (for example, 7 seconds). After a certain period of time has elapsed after the supply of the washing water from the rim water passage 2 to the toilet bowl 4 has started, the cams 24 and 25 are rotated by the motor 20 shown in FIG. 1 to return to the initial state in FIG.

As shown in FIG. 1, the flow path switching device 10 of the present embodiment has a mechanism for manually opening and closing the on-off valves 15 and 16, so that it can be used in the event of a power failure or failure of the motor 20. It is also possible to execute a toilet flush with a siphon action. The operation of the handle 40 when the toilet is manually washed may be performed in accordance with the driving mode of the cams 24 and 25 by the motor 20. That is, if the operation of rotating the handle 40 by 90 degrees at regular intervals (for example, every 7 seconds) is performed, it is possible to perform the same toilet flush as when the motor 20 is driven. In this case, it is desirable to provide means for checking the positions of the cams 24 and 25. This means that, for example, the peripheral surface of the rotating shaft 23 is divided into four colors and divided so that the color of the rotating shaft 23 can be observed from the window f of the rotary encoder E. Thereby, the rotation angle of the rotating shaft 23, that is, the cams 24, 25
Can be confirmed.

Further, if a power failure occurs during the operation of the flow path switching device 10, the cam 24,
Depending on the position of 25, one or both of the on-off valves 15 and 16 are opened, and the supply of water to the jet hole 5 and / or the rim water passage 2 does not stop. Therefore, it is conceivable to provide a backup power supply 20b such as a battery and drive the motor 20 to rotate the rotating shaft 23 to a predetermined position. Specifically, when a power failure occurs, the positions of the cams 24 and 25 are confirmed by the rotary encoder E and the like, and the motor 20 is driven by the backup power supply 20b to execute one cycle of toilet flushing. At the same time, the on-off valves 15 and 16 can be reliably closed.

Further, even when the operation by the manual operation mechanism is stopped halfway, there is a problem that the water supply to the jet hole 5 and / or the rim water passage 2 cannot be stopped. To deal with such a problem, a sensor is provided for detecting the flow time or flow amount of the washing water in the on-off valves 15 and 16, and when the flow time or flow amount of the wash water is abnormal, an alarm is issued or the cams 24 and 25 are issued. Until the on-off valves 15 and 16 are closed.
By providing means for forcibly rotating the rotating shaft 23, it is possible to cope with the problem. (Second Embodiment) In the flow path switching device 10 of the first embodiment shown in FIG. 1, a clutch 22 is incorporated in order to prevent a load from being applied to the motor 20 during manual operation. The rotation shaft 23 to which the cams 24 and 25 are attached can freely rotate with respect to the motor 20. For this reason, when the cam 24 on the rim water passage 2 closes the on-off valve 15, the rotary shaft 23 rotates suddenly, and the on-off valve 15 may be rapidly closed to cause a water hammer.

Therefore, as shown in FIG. 6, in the flow path switching device 10 of the second embodiment, a worm gear 52 is mounted on the output shaft 22d of the clutch 22 and the worm wheel is connected to the worm gear 52 and the rotating shaft 23. 53 is connected to transmit the rotational operation force. This makes it possible to prevent the rapid rotation of the rotating shaft 23. Other configurations, operations, and effects are the same as those of the first embodiment. (Third Embodiment) FIGS.
7 shows an embodiment in which the shapes of the cams 28 and 29 abutting on 7 are changed. In this embodiment, as shown in FIGS. 7 to 10A, the cam 28 on the rim water passage 2 side has a substantially lemon-like shape in which two symmetrical portions protrude from the disk. FIG.
-10 (B), the cam 29 on the jet hole 5 side
Has a substantially water-drop shape with one place protruding from the disk.
Each of the cams 28, 29 has a protrusion 28a, 29a
It is attached to the rotating shaft 23 so as to be shifted by 0 degrees.

With the cams 28 and 29 having such shapes, the flow path can be switched by rotating the rotating shaft 23 at a constant speed. That is, from the initial state shown in FIG.
When the rotation shaft 23 is rotated counterclockwise and the rotation angle reaches 90 degrees, as shown in FIG. 7A, the protrusion 28a of the cam 28 on the rim water passage 2 side moves the cam receiving box 26 rightward. 8A, the valve body V of the on-off valve 15 as shown in FIG.
To start the supply of the washing water to the rim water passage 2. The supply of the washing water to the rim water passage 2 is continued until the cam 28 starts to push the cam receiving box 26 and further rotates 90 degrees. As shown in FIG. 9A, after the valve body V of the on-off valve 15 is seated and washing of the toilet bowl 4 is completed, the rotation of the rotating shaft 23 is further continued.

Then, as shown in FIG. 9B, the cam 29 on the jet hole 5 side is pushed by the projecting portion 29a to move the cam receiving box 27 to the right, and the valve element V of the on-off valve 16 is released. And water flow to the jet hole 5 is started. As a result, the washing water is spouted from the jet hole 5 into the discharge pipe 3 to force the siphon action. The flow of water through the jet hole 5 also continues until the cam 29 starts rotating by 90 degrees after the cam 29 starts pushing the cam receiving box 27, as shown in FIG. When the water flow to the jet hole 5 is completed, FIG.
As shown in (A), the cam 28 on the rim water passage 2 again moves the cam receiving box 26 to the right, and the valve body V of the on-off valve 15
And water is supplied to the rim water passage 2. The water supply to the rim water passage 2 also continues while the cam 28 rotates 90 degrees as shown in FIG. By supplying water to the rim water channel 2, the toilet bowl 4 is supplied with washing water after the siphon action is completed, and a water seal is formed in the toilet bowl 4. When the cam 28 rotates and returns to the initial state, the flow of water to the rim water passage 2 ends.

The channel switching device 10 of the present embodiment includes a cam 2
Since the shapes of 8, 29 are formed as described above, the motor 2
The control of 0 can be a continuous rotation drive instead of the intermittent rotation drive as in the first embodiment. That is, desired toilet flushing can be performed only by rotating the cams 28 and 29 at a constant rotation speed. Further, since there is no sudden closing of the on-off valves 15 and 16, there is an advantage that water hammer hardly occurs.

Other configurations, operations and effects are the same as those of the first embodiment. (Fourth Embodiment) The present embodiment is mainly applied to a toilet for a cold region, and aims at always discharging a small amount of washing water in order to prevent freezing. . For this purpose, in the present embodiment, FIG.
As shown in FIG. 1, the cam 30 for the jet hole 5 has
1 are formed.

When the cam 30 is rotated by 45 degrees from the state shown in FIG. 11, the protruding portion 31 of the cam 30 pushes the cam receiving box 27 to slightly move the valve body V of the on-off valve 16. open. At this time, the cam 24 for the rim water passage 2 also rotates 45 degrees, and the opening / closing valve 15 is slightly opened. Therefore, by holding the cams 24 and 30 at the 45-degree rotation position in this manner, a small amount of washing water is constantly supplied to the rim water passage 2 and the jet holes 5, and the flowing state is maintained to prevent freezing. be able to.

Thereafter, the state shown in FIG. 13 is the same as the state shown in FIG. 3 of the first embodiment. Below, other configurations,
The operation and effect are the same as in the first embodiment. In this embodiment, it is desirable to set a flow mode in which the rotary shaft 23 is rotated by 45 degrees in the rotary encoder E shown in FIG. 1 for monitoring and controlling the amount of rotation of the rotary shaft 23. Further, the flow rate of the valve 11 provided in the primary water supply pipe 12 can be changed between the normal mode and the flow mode, and the flow rate can be restricted to be smaller in the flow mode than in the normal mode. (Fifth Embodiment) FIG. 14 shows an embodiment in which the operation of the flow rate switching device 10 is performed only by a manual operation mechanism. In the present embodiment, the rotating shaft 23 to which the cams 24 and 25 are attached is connected to the output portion 22 e of the clutch 22, and the operating gear 45 provided integrally with the input shaft 44 to which the operating lever 43 is attached is connected to the input of the clutch 22. Connected to gear 22a. The operation gear 45 is provided with a return spring 46 in the rotation direction, and a built-in mainspring and the like, and a speed control gear 4 of a speed control device 48 for limiting the rotation speed to a constant.
7 is connected.

In this embodiment, since the clutch 22 is incorporated between the operating gear 45 and the rotating shaft 23, the operating gear 45 can be freely rotated with respect to the rotating shaft 23. In addition, the manual operation means having such a configuration includes the operation lever 4.
3 is rotated by a predetermined angle, and then released, the operating gear 4 is turned by the urging force in the rotational direction given to the return spring 46.
5 attempts to return and rotate in the direction opposite to the rotation operation direction.
However, the operation gear 45 is provided with a speed control gear 47 of a speed control device 48.
Is connected, the rotation speed of the operation gear 45 is limited to a predetermined speed. Therefore, the speed at which the rotating shaft 23 is rotated via the clutch 22 can be adjusted to a predetermined speed, so that the opening / closing operation of the opening / closing valves 15 and 16 is performed at desired time intervals, and the required toilet flushing is performed. be able to.

Other structures, operations and effects are the same as those of the first embodiment. In the present embodiment, the operation gear 4
If the gear ratio between the gear 5 and the input gear 22a of the clutch 22 is set to, for example, 4: 1, by rotating the operation lever 43 by 90 degrees, the rotation shaft 23 rotates once (= 360).
Rotation). (Sixth Embodiment) FIGS. 15 and 16 show another mode of the manual operation mechanism. In this embodiment, cams 62 and 63 that contact the outer surfaces of the cam receiving boxes 26 and 27 are provided on the rotating shaft 41 connected to the handle 40. These cams 62, 63
Are the same as the cams 24 and 25 of the first embodiment, which are driven to rotate by the motor 20.

Other structures, operations and effects are the same as those of the first embodiment. (Other Embodiments) The first to sixth embodiments describe the case where the present invention is applied to the flow switching device 10 of the forced siphon toilet 1, but the present invention is applied to other flow switching devices. We do not prevent passing. Further, the present invention can be applied to a case where an on-off valve is provided in three or more flow paths.

[0036]

According to the present invention, the opening and closing of individual on-off valves provided in a plurality of flow paths can be operated with a time lag by one operating means. For this reason, the opening and closing of the valve can be automatically controlled without reducing the number of components and increasing the cost. In addition, since the channel structure is simplified and the structure is simplified, the device can be made compact.

Further, since it is not necessary to separately provide an on-off valve for manual operation, the number of members is reduced. In addition, since the pressure loss is reduced, the advantage that the flow rate can be ensured even at a low feedwater pressure is obtained.

[Brief description of the drawings]

FIG. 1 relates to a first embodiment of the present invention,
It is a top view showing the schematic structure of a channel switching device.

2A and 2B show an initial state according to the first embodiment of the present invention, in which FIG. 2A is a side sectional view of a main part corresponding to line II in FIG. 1, and FIG. FIG. 2 is a side sectional view of a main part corresponding to line II-II of FIG.

FIG. 3 shows a first state of water supply to the rim water channel according to the first embodiment of the present invention, and FIG.
FIG. 2B is a side sectional view of a main part corresponding to line II of FIG. 1, and FIG. 2B is a side cross sectional view of a main part corresponding to line II-II of FIG.

FIG. 4 shows a jet hole 5 according to the first embodiment of the present invention.
FIG. 1 (A) shows the state of water supply to
FIG. 2B is a side cross-sectional view of a main part corresponding to line I-II, and FIG. 2B is a side cross-sectional view of a main part corresponding to line II-II in FIG.

FIG. 5 shows a state of water supply to the rim water channel after completion of the siphon according to the first embodiment of the present invention, and FIG. 5 (A) is a side view of a main part corresponding to line II in FIG. Sectional view,
FIG. 2B is a side sectional view of a main part corresponding to line II-II in FIG.

FIG. 6 relates to a second embodiment of the present invention,
It is a top view showing the schematic structure of a channel switching device.

7A and 7B show an initial state according to the third embodiment of the present invention. FIG. 7A is a side sectional view of a main part corresponding to line II of FIG. 1, and FIG. FIG. 2 is a side sectional view of a main part corresponding to line II-II of FIG.

FIG. 8 shows a first state of water supply to the rim water channel according to the third embodiment of the present invention, and FIG.
FIG. 2B is a side sectional view of a main part corresponding to line II of FIG. 1, and FIG. 2B is a side cross sectional view of a main part corresponding to line II-II of FIG.

FIG. 9 shows a jet hole 5 according to a third embodiment of the present invention.
FIG. 1 (A) shows the state of water supply to
FIG. 2B is a side cross-sectional view of a main part corresponding to line I-II, and FIG. 2B is a side cross-sectional view of a main part corresponding to line II-II in FIG.

FIG. 10 shows a state of water supply to the rim water channel after termination of the siphon according to the third embodiment of the present invention, and FIG. 10 (A) is a side view of a main part corresponding to line II in FIG. Sectional view,
FIG. 2B is a side sectional view of a main part corresponding to line II-II in FIG.

11A and 11B show an initial state according to the fourth embodiment of the present invention. FIG. 11A is a side sectional view of a main part corresponding to line II in FIG. 1, and FIG. FIG. 2 is a side sectional view of a main part corresponding to line II-II of FIG.

12A and 12B show a flow mode in a fourth embodiment of the present invention. FIG. 12A is a side sectional view of a main part corresponding to line II in FIG. 1, and FIG. FIG. 2 is a side sectional view of a main part corresponding to line II-II of FIG.

FIG. 13 shows a state of water supply to a rim water passage according to a fourth embodiment of the present invention, and FIG.
FIG. 2B is a side cross-sectional view of a main part corresponding to line I-II, and FIG. 2B is a side cross-sectional view of a main part corresponding to line II-II in FIG.

FIG. 14 is a plan view according to a fifth embodiment of the present invention, showing a general configuration of a flow path switching device.

FIG. 15 relates to a sixth embodiment of the present invention, and is a plan view illustrating a schematic configuration of a flow path switching device.

FIG. 16 relates to a sixth embodiment of the present invention, in which FIG. (A) is a side sectional view of a main part corresponding to line II in FIG. 15, and FIG. FIG. 2 is a side sectional view of a main part corresponding to line II.

FIG. 17 is a side sectional view showing a schematic configuration of a conventional forced siphon toilet.

[Explanation of symbols]

10: flow path switching device Q, R: flow path (branch water supply pipe) V: valve body 15, 16: open / close valve 24, 25, 28, 29, 30, 26, 27, 17, 1
8, 23 ... transmission means (24, 25, 28, 29, 30 ...)
Cam, 26, 27 ... receiving device (cam receiving box), 17, 18
... Valve shaft, 23 ... Rotary shaft) 20, 43 ... Operating means (20 ... Motor, 43 ... Operating lever) 20a ... Output shaft 40,41,50,51,43,44,45 ... Manual operating means (40 ... Handle , 41: rotating shaft, 50, 51: gear, 43: operating lever, 44: input shaft, 45: operating gear) 22: clutch mechanism (clutch) 22b, 22e: output unit (22b: output gear) 52, 53 ... Transmission mechanism (52: worm gear, 53: worm wheel) 20b: Backup power supply 45, 46, 48, 47 ... Adjusting means (45: operation gear,
46: return spring, 48: governor, 47: governing gear)

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kenichi Ito 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Hideya Koike 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Co., Ltd. Inside Inax (72) Inventor Koji Miwa 5-1-1 Koie Honcho, Tokoname City, Aichi Prefecture Inax Company (72) Inventor Shoichi Nakamura 5-1-1 Koie Honcho, Tokoname City, Aichi Prefecture Inax Company (72) Inventor Yutaka Mizutani 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Atsushi 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation F-term (reference) 2D039 AC04 AD01 CB01 EA01 FD01

Claims (7)

[Claims] An opening valve is provided in each of a plurality of flow passages for mechanically opening and closing a valve body, and a transmission means for transmitting a mechanical operating force for opening and closing each of the valve bodies is provided. An operating means is provided for each of the open / close valves, and provides a mechanical operating force to each of the open / close valves through the transmitting means, and an output timing of the mechanical operating force from the operating means to each of the transmitting means. Wherein the transmission means has a predetermined time lag for each of the transmission means. The operating means is a motor, and each transmitting means is provided with a plurality of cams having different phases attached to a rotating shaft which is directly or indirectly driven to rotate by the motor; Attached to the valve shaft connected to the valve body,
2. The flow path switching device according to claim 1, further comprising a receiving member of an operating force capable of contacting each of said cams. 3. The flow path switching device according to claim 2, further comprising a manual operation means for manually rotating the rotation shaft to which the cam is attached. 4. A clutch mechanism is interposed between an output shaft of a motor and a rotation shaft to which each cam is attached, so that an operation force of a manual operation means is transmitted to an output portion of the clutch mechanism. The flow path switching device according to claim 3. 5. The flow path switching device according to claim 4, wherein a worm gear and a worm wheel are used as a transmission mechanism for transmitting a rotational operation force from an output portion of the clutch mechanism to a rotary shaft on which each cam is mounted. 6. The flow path switching device according to claim 2, wherein a backup power supply is provided for rotating each cam to a predetermined position when a power failure occurs. 7. The operating means comprises a manual member, and each transmitting means comprises a plurality of cams having different phases attached to a rotating shaft which is directly or indirectly rotationally driven manually, and each of the respective opening / closing valves. A transmission time length of a rotational operating force input from the manual member to the rotary shaft to which each of the cams is attached, the transmission time length being constituted by a receiving member of an operating force attached to the valve shaft connected to the valve body and being in contact with each of the cams. The flow path switching device according to claim 1, further comprising an adjusting unit that adjusts the flow to a predetermined time.