JP2000179024A - Device for preventing water leakage for toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water leakage preventive device to prevent an accidental flooding in a toilet by generating water leakage in a local part washing device or a washing tank, etc., provided in the toilet to proceed further with flowing out from the water leakage part. SOLUTION: A flow rate sensor 78 and a cut-off solenoid valve 32 for closing a supply channel 50 are provided on the supply channel 50 for water supplying to a discharging apparatus (a washing tank, a local part washing device) in the toilet. Then, the cut-off solenoid valve 32 is automatically and closely operated at the time of judging that water supply detected with the flow rate sensor 78 corresponds to abnormal water supply set beforehand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet water leakage prevention device.

[0002]

2. Description of the Related Art Recently, a local cleaning device provided in a toilet and spraying cleaning water from a nozzle to a local part of a human body for cleaning has been widely used in recent years. By the way, in this local cleaning device, for example, the switching element for turning on / off the water supply main valve of the local cleaning device for injecting / stopping the cleaning water from the nozzle remains in the water supply main valve open state. Cleaning water may continue to be sprayed from the nozzle for a long time due to malfunction, etc., and the floor around the toilet may be wet. In this case, especially when the toilet is on the second floor, the floor of the toilet must be waterproof. Otherwise, the ceiling on the first floor could get wet.

[0003] Alternatively, when the toilet flushing device breaks down, or when water leaks due to a seam of a pipe on a water supply channel to the toilet flushing device, etc., the same applies to a case where a person has been away for a long time. Water continued to flow into the toilet and the toilet could be flooded.

[0004]

The toilet water leakage prevention device of the present invention has been devised to solve such a problem. According to the first aspect, a flow rate sensor and a water stop valve for closing the water supply path are provided on a water supply path for supplying water to the water discharge device in the toilet, and water supplied by the flow rate sensor is detected. A control unit for closing the water shutoff valve when it is determined that the water supply corresponds to a preset abnormal water supply is provided.

According to a second aspect of the present invention, in the toilet water leakage prevention device according to the first aspect, the control unit continuously supplies water to the water supply passage detected by the flow rate sensor over a set limit time. Alternatively, it is characterized in that when the water continuously flows beyond the set limit flow rate, it is determined that the water supply is abnormal, and the water stop valve is closed.

According to a third aspect of the present invention, in the toilet water leakage prevention device according to any one of the first and second aspects, a local cleaning device for cleaning a human body part is provided downstream of the water stop valve as the water discharging device. In addition to the above, the control unit is configured to perform an abnormality when a water supply flow rate of the water supply channel per unit time is less than a set maximum value of a water supply flow rate to the local cleaning device and a continuous water supply time exceeds a first set limit time. It is characterized in that it is determined that water is supplied and the water shutoff valve is closed.

According to a fourth aspect of the present invention, in the toilet water leakage prevention device according to any one of the first to third aspects, a toilet flushing device is provided as the water discharging device downstream of the water shutoff valve, and the control is performed. The unit is determined to be abnormal water supply when the water supply flow rate of the water supply channel per unit time is equal to or more than the minimum setting value of the water supply flow rate to the toilet cleaning device and the continuous water supply time exceeds the second set limit time. The water shutoff valve is closed.

According to a fifth aspect of the present invention, there is provided the toilet water leakage prevention device according to any one of the first to fourth aspects, wherein the water stop valve comprises: (a) a movable iron core and a valve; (D) a solenoid coil for attracting the iron core in the valve closing direction, (c) a spring for urging the movable iron core together with the valve body in the valve closing direction,
A magnet for attracting and holding the movable iron core at the valve opening position,
(E) The solenoid valve is characterized by comprising a solenoid valve including a movable iron core at the valve closing position and a reset member for returning the valve body to the valve opening position by manual operation.

According to a sixth aspect of the present invention, in the toilet water leakage prevention device according to the fifth aspect, the reset member has a rod shape and has a display member protruding from a pushing position when the valve body is closed. The display member is configured to protrude by the valve closing operation of the valve element to display that the water stop valve is at the valve closing position.

[0010]

As described above, the water leakage prevention device according to the first aspect of the present invention is provided with a flow sensor and a water stop valve on a water supply path to a water discharging device in a toilet, and water supplied by the flow sensor is detected. When it is determined that the water supply corresponds to abnormal water supply, the control unit closes the water stop valve.
According to this water leakage prevention device, when water is leaked from a spouting device or a seam of a water supply pipe to the spouting device and the water supply to the spouting device is abnormal water supply different from normal water supply, By detecting and closing the water stop valve, it is possible to automatically stop water supply to the water discharge device in which the water leakage has occurred. Thereby, it is possible to prevent an accident such that the water continues to flow into the toilet due to the water leakage from the water spouting device, the toilet is flooded, and the ceiling downstairs may be wet in some cases.

The control unit determines that the water supply in the water supply channel is abnormal water supply when the water continuously flows beyond the set limit time or continuously exceeds the set limit flow rate, and closes the water stop valve. (Claim 2).

[0012] Generally, a water spouting device in a toilet, for example, a local cleaning device or a toilet flushing device as described above, has a substantially constant water spouting time or amount during use. For example, in the case of a local cleaning device, it is not usually used for 20 minutes or more. Alternatively, in the case of a toilet flushing device, for example, in the case of a toilet flushing device that performs flushing by storing flushing water in a flushing tank and discharging the flushing water to the flushing bowl, the capacity of the tank is constant and the tank is empty. The time or flow required to fill the water is constant.

Therefore, a certain limit time or a limit flow rate is set, and when the water supply is performed beyond the limit time or the limit flow rate, it can be determined that the water supply is abnormal, and based on this, the water shutoff valve is determined. In the event that a water discharge device such as a local cleaning device or a toilet flushing device leaks water due to a failure or the like, such a problem that the water discharge device continues to leak and floods the toilet. Can be prevented.

The above-mentioned local cleaning device is for cleaning a local part of a human body by injecting washing water from a nozzle, and the injection flow rate of washing water from the nozzle is relatively small. Therefore, in the apparatus according to claim 3, when the maximum value of the water supply flow rate to the local cleaning device is set, and when the water supply flow rate in the water supply channel is less than the set maximum value and the continuous water supply time uses the local cleaning device, If the water continues for a long time exceeding the limit time (first set limit time), it is determined that the water supply is abnormal and the water shutoff valve is closed. According to this water leakage prevention device, local cleaning is performed. When water leaks due to a failure or the like of the device, the leak can be detected from the water supply flow rate, and the water supply to the local cleaning device can be automatically stopped. As a result, it is possible to prevent the water from being continuously leaked from the local cleaning device.

According to a fourth aspect of the present invention, the minimum value of the flow rate of water supplied to the toilet flushing device is set, and the flow rate of water supplied in the water supply channel is equal to or more than the set minimum value, and the continuous water supply time is set to the toilet flushing device. When the water supply exceeds the time limit for water supply (second set time limit), it is determined that the water supply is abnormal and the water shutoff valve is closed. According to this water leakage prevention device, the cleaning tank, etc. When water leaks due to failure of the toilet flushing device or the like, subsequent water leakage can be automatically prevented by closing the water stop valve.

A local flushing device and a toilet flushing device are provided downstream of the water stop valve, and the control unit is provided with a water supply flow rate per unit time in the water supply passage that is less than the set maximum value and is used for continuous water supply. When the time exceeds the first set limit time or when the water supply flow rate per unit time is equal to or more than the set minimum value and the continuous water supply time exceeds the second set limit time, the water stop valve is closed. Can be done.

With this arrangement, when the local cleaning device and the toilet flushing device are installed together downstream of the water shutoff valve, when any one of them leaks water, the water supplied through the water supply channel is caused by the water leakage. It is possible to appropriately determine whether or not the water is leaking, and based on this, the water supply can be stopped by closing the water stop valve to stop the water leakage.

In the toilet water leakage prevention device according to the first aspect, the control unit may control the water supply of the water supply passage detected by the flow rate sensor to intermittently repeatedly flow at a constant time interval and accumulate the flow. When the time exceeds the set limit time, it is determined that the water supply is abnormal, and the water stop valve may be closed.

In the water leakage prevention device for a toilet according to any one of claims 1 to 4, the flow rate sensor is constituted by an impeller, and a generator for generating electric power by rotating the impeller and a power storage means are provided. In addition, the power storage unit can be used as a power source for operating the control unit.

Further, the water stop valve includes a movable iron core and a valve body,
A solenoid coil that attracts the movable iron core together with the valve body in the valve closing direction, a spring that urges the valve body in the valve closing direction, a magnet that attracts and holds the movable iron core at the valve open position, and manually opens the valve body. An electromagnetic valve including a reset member that returns the valve to the valve opening position can be provided (claim 5). In the water stop valve composed of this solenoid valve, power is supplied to the coil only for the valve closing operation, and the return to the valve open position is manually performed by the reset member, so that power consumption can be reduced.

Further, in this case, the reset member has a bar-shaped indicating member, and the resetting member is caused to protrude by the closing operation of the valve body of the water stop valve to bring the water stop valve into the closed state. It is possible to display that there is something (claim 6). If you do this,
It is possible to inform the user that the water shutoff valve has been closed due to water leakage from the water discharging device.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, 10 is a toilet bowl, 12 is a toilet body, 14 and 16 are a toilet seat and a toilet lid, respectively, and 18 is a washing tank (toilet washing device) installed on the rear upper surface of the toilet body 12. .

Reference numeral 20 denotes a local cleaning device for cleaning a local part of a human body by injecting cleaning water from one of a pair of nozzles 22. The main body box 24 has a mechanism for performing various operations therein. Built-in. The main body box 24 is provided with an operation section 26 on the side upper surface of the toilet body 12.

Reference numeral 28 denotes a water supply pipe end provided on the wall W of the toilet. A water stopcock 30 is connected to the water supply pipe end 28, and a water stop solenoid valve is connected to the water stopcock 30. (Water stop valve)
32 and a branch tap 34 are connected. This stopcock 3
0 and the water stop electromagnetic valve 32 can be configured as an integrated unit.

A pair of supply pipes 36,
38 extend from each end to the cleaning tank 1
8 and the local cleaning device 20. Water supplied from the water supply pipe end 28 is supplied to the cleaning tank 18 and the local cleaning device 20 through these supply pipes 36 and 38, respectively.

The water stopcock 30 is a normal water stopcock and is shown in FIG.
As shown in the figure, the valve body 40 and the shaft 42 integral therewith are provided.
When a tool is engaged with the engaging groove 44 on the rear end face of the shaft portion 42 and the tool is rotated, the shaft portion 42 and the valve body 40 advance by the screw feed action of the screw portion 46, Valve element 40
Abuts on the valve seat 48 to close the water supply passage 50.

On the other hand, the water stop solenoid valve 32 has a valve seat 52 and a diaphragm 54 as a main valve on the water supply passage 50, and closes the water supply passage 50 by the contact of the diaphragm 54 with the valve seat 52. . The diaphragm 54 is urged by a spring 56 in the valve closing direction.

Reference numeral 58 denotes a pilot valve in the water shutoff electromagnetic valve 32, which is a valve body 60 and a movable iron core 62 integral with the valve body 60 in a valve closing direction, that is, a direction in which the valve body 60 is brought into contact with a valve seat 64. The valve body 60 and the movable iron core 62 are kept at the valve-opening position by the attraction force between the solenoid coil 66 to be attracted, the spring 68 for urging the valve body 60 in the valve closing direction, and the magnet 70 provided on the movable iron core 62. Magnet 71, valve body 6 in valve closing position
2 is provided with a reset button (reset member) 72 which pushes 0 to the lower side in FIG. 2 to return to the valve opening position. Here, the reset button 72 is always urged upward by the spring 73, that is, in the return direction.

In the closed state, the pilot valve 58 partially guides water in the water supply passage 50 to a passage 74 on the back surface of the diaphragm 54 (a small through-hole is formed in the diaphragm 54). The diaphragm 54 is kept in a closed state by the back pressure.

On the other hand, by opening the valve body 60, the back pressure trapped inside the passage 74 on the back side of the diaphragm 54 is released through the passage 76, and the diaphragm 54 as the main valve body is moved by the water pressure in the water supply passage 50. The valve is opened to open the water supply passage 50, and water can be supplied to the cleaning tank 18 and the local cleaning device 20 through the water supply passage 50.

FIG. 3 shows the specific operation of the pilot valve 58. As shown in FIG. 3, the pilot valve 58 is movable by the solenoid coil 66 when the solenoid coil 66 is excited by energization. The iron core 62 is sucked upward, whereby the valve body 60 comes into contact with the valve seat 64 to shut off the passages 74 and 76. That is, the valve body 60 performs the valve closing operation (FIGS. 3 (I) and 3 (II)).

When the reset button 72 is pushed downward in this state, the movable iron core 62 and the valve body 60 are pushed back in the valve opening direction. And the movable iron core 62 reaching the valve opening position is
By the attraction force of the magnets 70 and 71, the valve is held at the valve-open position against the urging force of the spring 68 (see FIG.
I)).

As shown in FIG. 2, a flow sensor 78 composed of an impeller is provided at the upstream of the water supply passage 50, specifically, the diaphragm 54, and the flow of water in the water supply passage 50 is detected by the flow sensor 78. Is detected. The control unit 80 controls the operation of the electromagnetic shutoff valve 32, specifically, the operation of the pilot valve 58, based on the flow rate detected by the flow rate sensor 78.

The flow sensor (impeller) 78 is connected to the generator 8
2, the generator 82 generates electric power based on the rotation of the impeller, and the electric power is charged (stored) in a capacitor 84 as a storage means. A power supply / rectifier circuit 86 and a charging circuit 88 are provided between the generator 82 and the capacitor 84. In this example, the control unit 80 operates using the capacitor 84 as a power supply.

In the water leakage prevention device of this embodiment, the local cleaning device 2
Control is performed when the water supply flows continuously in the water supply passage 50 for a time longer than the time when 0 is normally used, and when the water supply flows in the water supply passage 50 for a longer time than the time required for supplying the washing tank 18. The section 80 determines that the water supply is abnormal and determines whether the
Specifically, the pilot valve 58 is closed and the water supply is stopped. More specifically, the electric energy stored in the capacitor 84 as power storage means is supplied to the solenoid coil 66 through the switch circuit 90, and the pilot valve 5
The valve element 60 of No. 8 is closed.

FIG. 4 specifically shows the contents of control by the control unit 80. The contents of the control will be described below. In this example, the control unit 80 determines that there is water supply to the washing tank 18 when there is a flow of water supply in the water supply passage 50 and the flow rate of the water supply is 3 liters or more per minute, and the water supply continuation time Is longer than 10 minutes (second set limit time) or more, it is determined that the water supply is abnormal, and the water stop solenoid valve 32 is closed (step S1).
0, S12, S14, S16, S18).

Since the capacity of the washing tank 18 is constant and the amount of water for filling the water is about 20 liters, for example, the time for supplying water to the washing tank 18 does not exceed 10 minutes. Is continuously abnormal for 10 minutes or more, this is determined to be abnormal, and the water stop solenoid valve 32
Is closed.

On the other hand, when the water supply flow rate is less than 3 liters per minute, it is determined that the local cleaning device 20 is used, and the water supply continuation time is 20 minutes (first set limit time).
If so, it is considered that an abnormality has occurred in the local cleaning device 20, and the water stop solenoid valve 32 is closed (steps S20, S22, S18).

Usually, the local cleaning device 20 is not continuously used for more than 20 minutes, and the
When the flow of the water supply in the inside of the tank continuously occurs for 20 minutes or more, it is determined that the water supply is abnormal, and the water stop electromagnetic valve 32 is closed.

As another control method, the water supply channel 50
30 liters of continuous water supply (set limit flow)
At this point, the water stop solenoid valve 32 may be closed. Regardless of whether the local cleaning device 20 is used or water is supplied to the cleaning tank 18, water is not continuously supplied for more than 30 liters. It is also possible to make a judgment and close the water stop electromagnetic valve 32.

Alternatively, even when the water supply occurs intermittently, when the water supply intermittently repeatedly flows at a constant time interval and the accumulated time of circulation exceeds the set limit time, it is determined that the water supply is abnormal. The water shutoff electromagnetic valve 32 may be closed.

According to the water leakage prevention device of this embodiment, water leakage from the cleaning tank 18 and the local cleaning device 20 occurs, and the water supply to the cleaning tank 18 and the local cleaning device 20 is different from the normal water supply. When this happens, the water stop solenoid valve 32 can be automatically closed by detecting this. As a result, the cleaning tank 18 and the local cleaning device
Water can be automatically stopped and water leaks from the washing tank 18 and the local washing device 20 to prevent water from flowing into the toilet and flooding the toilet, which in some cases wets the ceiling downstairs. be able to.

In the water stop solenoid valve 32 of this embodiment, power is supplied to the solenoid coil 66 only for the valve closing operation, and the return to the valve opening position is manually performed by the reset button 72, so that the power consumption is small. Has advantages.

Further, in this embodiment, the reset button 72 has a bar-shaped display member 92 as shown in FIG. 5, and the reset button 72 is caused to protrude by the closing operation of the valve body 60 of the water shutoff electromagnetic valve 32. Let the water stop solenoid valve 32
Indicates that the valve is in a closed state. By doing so, when water leaks from the cleaning tank 18 and the local cleaning device 20 and the water shutoff electromagnetic valve 32 closes, the user can be notified of this.

In this case, upper and lower through holes are provided in the reset button 72, and an axial display member 92 is slidably inserted therethrough, and a colored portion 94 such as red is provided at the upper end thereof. Can be kept.

In such a case, when the axial display member 92 moves upward when the water stop solenoid valve 32 is closed, the colored portion 94 is exposed to the outside, and the colored portion 94 is closed. The exposure can clearly inform the user that the water shutoff electromagnetic valve 32 has been closed.

Alternatively, as shown in FIG. 6, the reset button 72 is provided with an opening / closing lid 96 which is opened and closed by a spring, and when the water shutoff electromagnetic valve 32 is closed, the opening / closing lid 96 is opened. The shaft-shaped display member 92 may be pushed upward and the user may be informed that the water shutoff electromagnetic valve 32 has closed by the colored portion 94 at the upper end thereof. In addition, the user can be notified of this by a buzzer or voice when the water shutoff electromagnetic valve 32 is closed.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, the alternating current generated by the generator 82 can be directly supplied to the control unit 80 via the power supply / rectifier circuit 86. As a control method by the control unit 80, the power supply from the local cleaning device 20 or the Upon receiving the signal, when the local cleaning device 20 is not operating, it is determined that an abnormality has occurred when there is a flow of water in the water supply passage 50, and the water stop electromagnetic valve 32 is closed. You can also.

Alternatively, the water stop solenoid valve 32 can be automatically closed when the voltage of the condenser 84 becomes equal to or higher than the set voltage without relying on the water supply detection signal from the flow rate sensor 78. It is.

In the above example, the control unit 80 is operated based on the electric power generated by the generator 82. However, the control unit 80, the switch circuit 90, and the like are operated using a dry cell or the like as a power source. You can also.

Further, in the present invention, only the abnormal water supply to the local cleaning device 20 is determined and only the water supply to the local cleaning device 20 is stopped, or only the abnormal water supply to the cleaning tank 18 is determined and the abnormal water supply to the cleaning tank 18 is determined. It is also possible to stop only the supply of water. In the former case, the flow rate sensor 78
And the water stop solenoid valve 32 is connected to the local cleaning device
In the latter case, the flow rate sensor 78 and the water stop solenoid valve 32 can be provided downstream of the branch tap 34 on the cleaning tank 18 side.

The present invention can be configured in variously modified forms without departing from the gist of the present invention. For example, a flow sensor other than the impeller may be used as the flow sensor 78.

[Brief description of the drawings]

FIG. 1 shows a water leakage prevention device according to an embodiment of the present invention,
It is a figure shown with a washing tank etc.

FIG. 2 is a diagram showing the water stop solenoid valve in FIG. 1 together with its control unit and the like.

FIG. 3 is a view showing an operation of the water stop solenoid valve of FIG. 2;

FIG. 4 is a diagram showing, in a flowchart, control contents of a control unit in FIG. 2;

FIG. 5 is a diagram showing a main part of another embodiment of the present invention.

FIG. 6 is a view showing a main part of still another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 18 washing tank (toilet washing device) 20 local washing device 32 water stop solenoid valve (water stop valve) 50 water supply channel 60 valve body 62 movable iron core 66 solenoid coil 68 spring 70, 71 magnet 72 reset button (reset member) 78 flow rate Sensor 80 Control unit 92 Display member

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Nobuyuki Tanaka 5-1-1 Koie Honcho, Tokoname, Aichi Prefecture Inside Inax Co., Ltd. (72) Eiji Saito 5-1-1 Koie Honcho, Tokoname, Aichi Prefecture Inax Co., Ltd. (72) Inventor Motohiro Nishiuchi 5-1-1 Koie Honcho, Tokoname City, Aichi Prefecture Inax Corporation (72) Inventor Naoto Yamada 5-1-1 Koie Honmachi, Tokoname City, Aichi Prefecture Inax Corporation (72) Invention Person Masato Takeda 5-1-1 Koiehoncho, Tokoname-shi, Aichi F-term in Inax Corporation (reference) 2D038 GA00 JC00 KA22 ZA06

Claims (6)

[Claims] A water supply device for supplying water to a water discharge device in a toilet is provided with a flow sensor and a water stop valve for closing the water supply passage, and the water supply detected by the flow sensor is set to a predetermined abnormal water supply. A water leakage prevention device for a toilet, further comprising a control unit that closes the water stop valve when it is determined that the above condition is satisfied. 2. The toilet water leakage prevention device according to claim 1, wherein the control unit controls the water supply of the water supply passage detected by the flow rate sensor continuously or at a set limit flow rate beyond a set limit time. A water leakage prevention device for a toilet, characterized in that it is determined that the water supply is abnormal when the water continuously flows over the water flow, and the water shutoff valve is closed. 3. The water leakage prevention device for a toilet according to claim 1, wherein a local cleaning device for cleaning a human body part is provided downstream of the water stop valve as the water discharging device, and the control is performed. The part is determined as abnormal water supply when the water supply flow rate of the water supply channel per unit time is less than the set maximum value of the water supply flow rate to the local cleaning device and the continuous water supply time exceeds the first set limit time. A water leakage prevention device for a toilet, wherein the water shutoff valve is closed. 4. The water leakage prevention device for a toilet according to any one of claims 1 to 3, wherein a toilet flushing device is provided as the water discharging device downstream of the water stop valve, and the control unit is configured to perform a unit time operation. When the water supply flow rate of the water supply path per contact is equal to or more than the minimum setting value of the water supply flow rate to the toilet flushing device and the continuous water supply time exceeds the second set limit time, it is determined that the water supply is abnormal and the water stop valve is turned off. A water leakage prevention device for a toilet, wherein the device is operated to be closed. 5. The water leakage prevention device for a toilet according to claim 1, wherein the water shutoff valve is closed by (a) a movable iron core and a valve body, and (b) the movable iron core is closed. (C) a spring for urging the movable iron core together with the valve body in the valve closing direction, (d) a magnet for attracting and holding the movable iron core at the valve opening position, and (e) A water leakage prevention device for a toilet, comprising an electromagnetic valve including a movable iron core at a valve closing position and a reset member for returning a valve body to an opening position by manual operation. 6. The water leakage prevention device for a toilet according to claim 5, wherein the reset member has a bar shape, and has a display member that protrudes from a pushing position when the valve body is closed. A water leakage prevention device for a toilet, wherein the display member is configured to protrude by the valve closing operation of the valve body to indicate that the water shutoff valve is at the valve closing position.