JP2000282538A - Flood prevention mechanism for flush toilets - Google Patents

Abstract

(57) [Summary] [Problem] In recent years, overflowing water leakage accidents due to clogging of flush toilets have frequently occurred in nursing homes and hospitals. A device has been proposed in which a flush-type toilet is provided with a water level sensor to raise an alarm when the water level exceeds the upper limit in order to prevent flooding due to clogging of foreign objects. The overflow of water is caused by flushing water with foreign matter clogged, so if the flushing water flows between the time when an alarm is issued and the time when the clogged foreign matter is removed, there is also a risk of overflowing. There is. Therefore, in the present invention, in a flush toilet that flushes by flushing water by opening a flush valve to perform flushing, a flush level sensor 4 is installed in the flush toilet 3, and a flush level above a predetermined level is detected by the flush level sensor. The present invention proposes an overflow prevention mechanism in a flush toilet configured to issue an alarm when detected and to keep the opening operation of the flush valve disabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flushing prevention mechanism for a flush toilet.

[0002]

2. Description of the Related Art In recent years, toilets have become dry in nursing homes and hospitals, and there have been no floor steps at the entrance from the viewpoint of barrier-free facilities. Are occurring frequently. The clogging of the flush toilet occurs when a resident or a patient inserts a disposable diaper, a large amount of toilet paper, or a foreign object such as a paper cup, etc.
In order to flush out these clogged foreign substances, the flushing water overflows from the flush toilet by flowing flush water many times, and the water flows out to the corridor or leaks to the lower floor. Further, when a foreign substance is clogged in the flush toilet, it is difficult for the administrator to immediately know the foreign substance without notification, and it is difficult to quickly perform a foreign substance removing operation or the like.

For the purpose of preventing overflow due to such foreign matter clogging, there has been proposed an apparatus provided with a water level sensor in a flush toilet so as to issue an alarm when the water level exceeds an upper limit. (See Japanese Utility Model Publication No. 7-24458)

[0004]

As described above, the overflow of the washing water from the flush toilet is caused by flushing the washing water in a state where foreign matters or the like are clogged. If the washing water is flushed before the foreign matter is removed, there is also a risk of overflow. In this case, the washing water may be caused to flow by a person or when the person is no longer detected by a photoelectric sensor or the like. An object of the present invention is to solve such a problem.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a flush toilet for flushing by flushing water by opening a flush valve, and installing a water level sensor on the flush toilet. In addition, the present invention proposes an overflow prevention mechanism in a flush toilet, which is configured to issue an alarm when a water level sensor detects a water level higher than a predetermined level and to keep the opening operation of the flush valve impossible.

Further, according to the present invention, in the above configuration,
A power supply control unit that supplies power to the cleaning valve device that opens and closes the cleaning valve is controlled by a water level detected by a water level sensor, and a power supply to the cleaning valve device is shut off when a predetermined water level or more is detected. Suggest.

Further, in the present invention, a water level sensor is installed in the flush toilet and an alarm is issued when the water level sensor detects a predetermined or higher water level, and an overflow hole is formed in the upper part of the flush toilet. The present invention proposes a flood prevention mechanism for a flush toilet configured to be connected to a flush water discharge pipe.

According to the present invention, when a foreign substance or the like is clogged in the flush toilet and the water level exceeds a predetermined level, the water level can be detected by a water level sensor and an alarm can be issued. Can be performed promptly.
According to the first and second aspects of the present invention, when a foreign substance or the like is clogged, an alarm is issued and the cleaning water cannot be flown. Therefore, it is possible to prevent overflow of the cleaning water flowing until the foreign substance is removed. According to the third aspect of the present invention, even if the washing water flows and the water level rises between the time when the foreign matter is clogged and the alarm is issued and the foreign matter is removed, the washing water is discharged from the overflow hole through the washing water discharge pipe. Therefore, flooding can be prevented.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 conceptually shows a first embodiment of a flood prevention mechanism of the present invention, and FIG. 2 shows an example of a flush toilet applied to the first embodiment. In the figure, reference numeral 1 denotes a main body device, and 2 denotes a cleaning valve device that opens and closes a cleaning valve (not shown) for ejecting cleaning water. A flush toilet 3 is provided with a water level sensor 4 above the flush toilet 3. Water level sensor 4
For example, a specific configuration and an installation method are appropriate, such as, for example, installing a pair of electrode wires at intervals, and setting them to an energized state when they are immersed in water. Reference numeral 5 denotes a signal device for operating the cleaning valve device 2. The signal device 5 includes, for example, a push button switch 6 for manually operating the cleaning valve device 2 and a cleaning valve when no human is detected. This is a configuration in which a photoelectric sensor 7 for operating the device 2 is provided. The configuration of such a signal device 5 is appropriate, and a device currently implemented as a toilet flushing system can be used. The cleaning valve device 2 opens the cleaning valve from the signal device 5,
The operating valve is opened and closed in response to each signal of closing, and the power is supplied through a power control unit 8 provided in the main unit 1. The cleaning valve device 2 includes:
As a power failure protection function, a function is provided to prevent the cleaning water from being left open and the cleaning water flowing by forcibly closing the cleaning valve when the power is cut off. On the other hand, the main unit 1 includes a water level detecting unit 9 for detecting the water level of the flush toilet 3 based on the energized state of the water level sensor 4.
Is provided, and the water level detection unit 9 issues a detection signal when the water level of the flush toilet 3 rises to a predetermined water level. The water level detection unit 9 turns on the display lamp 10 provided in the main body device 1 according to the detection signal, and also operates the power supply control unit 8 to shut off the power to the cleaning valve device 2. Activates the alarm device 11 installed at a remote place to perform an alarm operation such as sounding of a buzzer or lighting of an alarm lamp. The main unit 1 is provided with a return switch 12 for returning from these operations. The main body device 1 having the above configuration is installed in a toilet, and the alarm device 11 is installed in a management room such as a nurse station.

The operation flow of the mechanism of the present invention in the above configuration will be described with reference to the flowchart of FIG. First, assuming that clogging of the flush toilet 3 with foreign matter occurs in step S1, the water level in the toilet 3 due to flush water rises higher than usual as shown in step S2. Thus, in step S3, when the water level reaches the predetermined water level, the water level sensor 4 is turned on, and the water level detection unit 9 of the main device 1 detects the predetermined water level and issues a detection signal. In response to this detection signal, the alarm device 11 in the control room is activated as shown in step S4. That is, the alarm device 11 turns on the alarm display lamp and sounds the buzzer.
In addition, the form of the alarm in the alarm device 11 is appropriate. On the other hand, in response to the detection signal, as shown in step S5, the power supply controller 8 operates to cut off the power to the cleaning valve device 2, and the display lamp 10 provided on the main unit 1 is turned on. (Note that the display lamp 10 may be turned on in the normal state and turned off in step S5. That is, the display lamp 10 may be turned on or off in the normal state. In step S5, the power supply control unit 8 shuts off the power to the cleaning valve device 2, so that the cleaning valve device 2
As shown in FIG. 6, the protection function at the time of power failure is activated, the cleaning valve is forcibly closed, and that state is maintained. Therefore, even if the signal device 5 is operated, the washing water is not supplied, and the overflow can be prevented. As described above, in this embodiment, the supply of the cleaning water by the cleaning valve device 2 is stopped by shutting off the power supply.
It is possible to prevent the flushing valve device 2 from receiving the open signal from the signal device 5 and then receiving a next signal, as in the case where the close signal is issued from, so that the open state is not maintained. it can. Next, by the operation of the alarm device 11 in step S4 described above, the person in charge of managing the toilet can know that the foreign object is clogged in the flush toilet 3 of the toilet indicated by the alarm device 11, and can quickly remove the foreign object. Can be started. If the alarm device 11 is activated in step S4 and the manager confirms this, any of the alarm operations, for example, the sounding of the buzzer which becomes a noise, can be stopped. As shown in the above, the operation of maintaining only the lighting state of the alarm display lamp can be performed. Next, in step S7, foreign matters clogged in the flush toilet 3 are removed, and when the water level in the flush toilet 3 drops as shown in step S8, the management person installs the water in the main body device 1 as shown in step S9. The reset switch 12 is activated. Thus, the return switch 1
By operating the device 2, the elements in the main device 1 return to the normal state, the power supply to the cleaning valve device 2 by the power control unit 8 is restored, and the display lamp 10 of the main device 1 is turned off (or lit). Then, the display becomes the normal state. And furthermore
A return signal is sent to the alarm device 11 to return the elements of the alarm device 11 to the normal state. In this way, the alarm display lamp which has been lit up until then is turned off, and the alarm device 11 returns to the normal state.

In the above-described embodiment, the supply of the cleaning water by the cleaning valve device 2 is stopped by shutting off the power supply. However, the water level detecting section 9 generates a predetermined water level detection signal. In such a case, the configuration for disabling the supply of the cleaning water by the cleaning valve device 2 may be, for example, an opening signal from the signal device 5 to keep the cleaning valve of the cleaning valve device 2 open. It is also possible that the signal device 5 does not generate an open signal by the detection signal.

Next, FIG. 4 shows a flush toilet to which the second embodiment of the present invention is applied. In this embodiment, a water level sensor 4 is provided on an appropriately configured flush toilet 3 as in the first embodiment, and an overflow hole 13 is formed in the upper part to connect to a flush water discharge pipe 14. I have. Further, components corresponding to the water level detection unit 9, the display lamp 10, the return switch 12, and the alarm device 11 in the first embodiment are configured. In the case of the second embodiment, similarly to the first embodiment, when a foreign substance or the like is clogged in the flush toilet 3 and the water level becomes higher than a predetermined level, this is detected by a water level sensor and an alarm is issued. As a result, it is possible to quickly take measures such as removing the clogged foreign matter, and wash water is flushed between the time when the foreign matter is clogged and an alarm is issued and the time when the foreign matter is removed, so that the water level is reduced. Even if it rises, it is discharged from the overflow hole 13 through the washing water discharge pipe 14, so that overflow can be prevented. The flush toilet 3 to which the second embodiment can be applied is not limited to the flush toilet 3 in which the flush water is spouted by the opening operation of the flush valve to perform the flush as in the first embodiment.

[0013]

As described above, the present invention has the following effects. a. When a foreign substance or the like is clogged in the flush toilet and the water level becomes equal to or higher than a predetermined level, the water level can be detected by a water level sensor and an alarm can be issued, so that measures such as removal of the clogged foreign substance can be taken promptly. b. According to the first and second aspects of the present invention, when foreign matter or the like is clogged, an alarm is issued and the washing water cannot be flown, so that it is possible to prevent overflow of the washing water flowing until the foreign matter is removed. c. According to the second aspect of the invention, it is possible to prevent a malfunction in which the cleaning valve is held in the open state. d. According to the third aspect of the present invention, even if the washing water flows and the water level rises between the time when the foreign matter is clogged and the alarm is issued and the foreign matter is removed, the washing water is discharged from the overflow hole through the washing water discharge pipe. Therefore, flooding can be prevented.

[Brief description of the drawings]

FIG. 1 is a system diagram conceptually showing a first embodiment of a flood prevention mechanism of the present invention.

FIG. 2 is a perspective view showing an example of a flush toilet applied to the first embodiment.

FIG. 3 is a flowchart showing an operation flow of the first embodiment.

FIG. 4 is a perspective view showing an example of a flush toilet applied to a second embodiment of the overflow prevention mechanism of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main device 2 Washing valve device 3 Rinse toilet 4 Water level sensor 5 Signal device 6 Push button switch 7 Photoelectric sensor 8 Power control unit 9 Water level detecting unit 10 Indicator lamp 11 Alarm device 12 Return switch 13 Overflow hole 14 Washing water discharge pipe

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Wataru Shimizu 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation F-term (reference) 2D039 CB02 DB05

Claims (3)

[Claims] 1. A flush toilet for flushing by flushing flush water by opening a flush valve, wherein a water level sensor is installed on the flush toilet and an alarm is issued when a water level sensor detects a water level higher than a predetermined level. And a flushing prevention mechanism for a flush toilet, wherein the flushing valve is opened and the opening operation of the flushing valve is maintained to be impossible. 2. A power control unit for supplying power to a cleaning valve device that opens and closes a cleaning valve is controlled by a water level detected by a water level sensor, and shuts off power to the cleaning valve device when a water level higher than a predetermined level is detected. 2. A flood prevention mechanism for a flush toilet according to claim 1, wherein: 3. A flush toilet is provided with a water level sensor, and when a water level sensor detects a water level higher than a predetermined level, an alarm is issued. In addition, an overflow hole is formed in an upper portion of the flush toilet to discharge flush water. Overflow prevention mechanism for flush toilet characterized by connection with pipe