JP3406717B2 - Sanitary fitting cleaning equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for sanitary appliances such as urinals used in public toilets and the like.

[0002]

2. Description of the Related Art Conventionally, each urinal (hereinafter referred to simply as a urinal) installed in a public toilet has a cleaning device. As shown in FIGS. 9 and 10, each toilet bowl 1 is installed on a wall surface 2 and a water supply pipe 3 is provided therein. Each water supply pipe 3 is provided with an electromagnetic control valve 4 in the vicinity of the toilet 1. The electromagnetic control valve 4 uses a latching solenoid that consumes electric power only when it is operated, thereby reducing the power consumption of the cleaning device. Each control valve 4 is connected to a cleaning device provided in a control box 5 provided for each toilet 1. Each control box 5 is provided in the wall surface 2 located slightly above the toilet bowl 1. The control box 4 includes the control valve 4
A power supply circuit unit 6 and a control circuit unit 7 which together form a cleaning device
And the detection part 8 is arrange | positioned. The control box 5 is exposed to the outside so that its surface plate 9 constitutes a part of the wall surface 2. The detection unit 8 is attached to the surface plate 9, and the detection unit 8 is attached.
Is composed of a light emitting diode that emits light forward and a photodiode that receives reflected light of the light emitted by the light emitting diode.

FIG. 11 shows an electric circuit of the cleaning device. The cleaning device includes an electromagnetic control valve 4, a power supply circuit section 6, a control circuit section 7
And a detector 8. The power supply circuit section 6 is
It is composed of a step-down transformer 10 and a bridge rectifier circuit 11. A commercial AC power supply AC is input to the primary side input terminal of the transformer 10 via a switch 12. The power supply AC is also supplied to the cleaning device provided in another toilet bowl 1 via the switch 12. The step-down transformer 10 steps down the commercial AC power supply AC and outputs it to the bridge rectifier circuit 11. The bridge rectifier circuit 11 is a step-down AC power supply AC.
Is full-wave rectified and the full-wave rectified voltage VS is output to the control circuit unit 7.

The control circuit section 7 includes a capacitor 13 for charging power, a constant voltage circuit 14, a microcomputer (hereinafter,
It is composed of a microcomputer 15), a detector control circuit 16 and a valve drive circuit 17. The capacitor 13 has one end connected to the rectifier circuit 11 and the other end grounded. The capacitor 13 charges the full-wave rectified voltage VS.
The constant voltage circuit 14 is composed of a three-terminal regulator,
The charging voltage of the capacitor 13 is input and a stable DC voltage without ripple is output to the power supply line 18. This DC voltage is supplied as an operating power supply for the detection unit control circuit 16 and the valve drive circuit 17 via the power supply line 18.

The microcomputer 15 is a central processing unit (CPU)
And a read-only memory (ROM) 15a storing a control program, a readable / rewritable memory (RAM) 15b, a timer 15c, and an input / output interface. The microcomputer 15 has an output port P1 and an input port P2, and both ports P1 and P2 are connected to the detection unit control circuit 16. The microcomputer 15 outputs a light emission signal to the detection unit control circuit 16. The detection unit control circuit 16 causes the light emitting diode of the detection unit 9 to emit light based on the light emission signal. Further, the detection unit control circuit 16 outputs to the microcomputer 15 a light reception signal obtained by amplifying and waveform-shaping the detection signal output by the phototransistor based on the reflected light of the light emitted by the light emitting diode.

The microcomputer 15 has output ports P3 and P4.
Both ports P3 and P4 are connected to the valve drive circuit 17. The microcomputer 15 outputs from the output port P3 to 1
The valve opening signal O consisting of a pulse and the valve closing signal C consisting of one pulse are output from the output port P4 to the valve drive circuit 17, respectively. The valve drive circuit 17 responds to the valve open signal O to switch the electromagnetic control valve 4 to the valve open position. Also, the valve drive circuit 1
7 responds to the valve closing signal C to switch the electromagnetic control valve 4 to the valve closing position.

The electromagnetic control valve 4 is composed of a latch type solenoid. Therefore, after the electromagnetic control valve 4 is switched to the valve open position by the valve drive circuit 17 in response to the valve open signal O, the state of the valve open position is maintained. That is, the electromagnetic control valve 4 remains in this valve open position unless it is switched to the valve close position by the valve drive circuit 17 in response to the valve close signal C. Therefore, the flush water is supplied to the toilet bowl 1 only while the electromagnetic control valve 4 is in the valve open position. Then, the microcomputer 15 stores in the RAM 15c whether the electromagnetic control valve 4 at that time is in the valve open position or the valve closed position.

In the cleaning device thus constructed,
When a person stands in front of the toilet 1, the light emitted by the light emitting diode hits the person and is reflected, and the reflected light is received by the photodiode. The detection unit control circuit 16 outputs a light reception signal to the microcomputer 15 based on the light reception of the photodiode.
The microcomputer 15 determines that a person stands in front of the toilet 1.

Then, when the person leaves, the phototransistor does not receive the reflected light, and the light receiving signal from the detector control circuit 16 disappears. The microcomputer 15 outputs the valve opening signal O to the valve drive circuit 17 in response to the disappearance of the light receiving signal. The valve drive circuit 17 switches the electromagnetic control valve 4 from the valve closed position to the valve open position in response to the one-pulse valve open signal O. At this time, data in which the state of the electromagnetic control valve 4 changes from the valve closed position to the valve open position is stored in the RAM 15b. Further, the microcomputer 15 causes the timer 15c to count the time.

When the timer 15c counts a predetermined time, the microcomputer 15 outputs the valve closing signal C to the valve drive circuit 1
Output to 7. The valve drive circuit 17 switches the electromagnetic control valve 4 from the valve open position to the valve close position in response to the valve closing signal C of one pulse. At this time, data in which the state of the electromagnetic control valve 4 is changed from the valve open position to the valve closed position is stored in the RAM 15b. Therefore, the cleaning device supplies cleaning water to the toilet bowl 1 for a predetermined time after the person leaves the toilet bowl 1 and then stops supplying the cleaning water, and waits for the next cleaning (normal cleaning).

Further, if the electromagnetic control valve 4 is in the valve open position and a power failure occurs during cleaning, the supply of the AC power supply AC to the power supply circuit 6 is stopped. However, the electromagnetic control valve 4 is switched to the valve closed position based on the charging voltage charged in the charging capacitor 13. That is, the capacitor 13 secures the charging voltage required to switch the electromagnetic control valve 4 to the valve closed position only once when a power failure occurs. Therefore, even if a power failure occurs during cleaning, the cleaning water does not continue to flow.

Furthermore, in the cleaning device for each toilet 1, the switch 12 is closed to check the operation after construction, and the cleaning water is flowed to the toilet 1 for a certain period of time in the form of initial cleaning only once. ing. Therefore, when the switch 12 is closed and the AC power supply AC is supplied to the cleaning device of each toilet 1, the toilets 1 are simultaneously subjected to the initial cleaning.
This initial cleaning is executed by the microcomputer 15 when the operating voltage is applied based on the control program of the ROM 15a and the microcomputer 15 is initially set.

[0013]

By the way, it is necessary to wash each toilet bowl 1 in a public toilet. At this time, it is convenient if flush water can be flushed to each of the toilets 1 all at once.
Therefore, the initial cleaning described above is used. That is, the switch 12 is opened and closed to flush the flush water to each of the toilets 1 all at once. However, when the switch 12 is opened and closed to flush the flush water to each of the toilets 1 all at once, there are the following problems. That is, even if the switch 12 is opened to cut off the supply of the AC power supply AC, the charge of the capacitor 13 is not immediately discharged and the charging voltage does not become 0 immediately. This is because the above power outage is taken into consideration. Therefore, the microcomputer 15
Has a time until the operating power supply becomes 0 and the operating voltage is input again and is initially set. as a result,
If the time for opening and closing the switch 12 for a short time is short, the microcomputer 15 is not initially set and simultaneous initial cleaning cannot be performed. Therefore, it is very inconvenient because the switch 12 has to be closed until the capacitor 13 is completely discharged.

Some cleaning apparatuses are driven by batteries. In this case, the power supply circuit 6 is not necessary, which is advantageous. Then, the condenser 13 is provided similarly to the above-mentioned cleaning device. This is to prevent the same problem that occurs when the battery is exhausted and a power failure occurs in the cleaning device.

However, in a cleaning device using a battery, it may be desired to remove the battery and inspect the control circuit section 7. In this case, since the electric charge is stored in the capacitor 13, there is a disadvantage that the inspection cannot be performed until the electric charge is completely discharged.

The present invention has been made to solve the above problems, and its purpose is to provide a capacitor with reserve power for returning the electromagnetic control valve in the valve open position to the valve closed position in the event of a power failure or the like. It is an object of the present invention to provide a sanitary equipment cleaning device that can store electricity and can immediately discharge electricity when the electromagnetic control valve is placed in the valve closed position.

[0017]

In order to solve the above problems, the invention according to claim 1 is provided with a capacitor for charging the power of the power supply, and when the power supply from the power supply is stopped, the charging power of the capacitor is reduced. In the sanitary equipment cleaning device in which the electromagnetic control valve is switched to the valve closed position where the washing water is not supplied to the sanitary equipment, the charging that discharges the charging power of the capacitor with the electromagnetic control valve in the valve closed position is performed. A power discharging means was provided.

The invention described in claim 2 is the invention according to claim 1, wherein the charging power discharging means determines whether the charging power discharging means is in a state where power is supplied from a power source or not. And discharging means for discharging the charging power of the capacitor, and discharging control means for discharging the charging power of the capacitor by the discharging means when no power is supplied based on the determination result of the power supply determining means.

According to a third aspect of the invention, in the second aspect of the invention, the discharging means is a switching element connected between the high potential side of the capacitor and the ground, and the discharging control means is the switching element. Was switched to connect between the high potential side of the capacitor and the ground.

According to a fourth aspect of the invention, in the invention according to the second aspect, the discharging means includes valve driving means for driving an electromagnetic control valve, and the discharging control means is electromagnetically controlled by the valve driving means. The valve was continuously driven to the closed position.

[0021]

Therefore, according to the first aspect of the present invention, when the power supply from the power source is stopped, the electromagnetic control valve in the valve open position is switched to the valve closed position by the charging power of the capacitor and placed in the valve closed position. Some solenoid control valves remain. Then, the charging power of the capacitor is discharged by the charging power discharging means with the electromagnetic control valve in the valve closed position. As a result, when the power supply from the power source is cut off, the charging power other than that used to drive the electromagnetic control valve to switch to the valve closed position is quickly discharged. Then, when power is supplied again, the capacitor is newly charged with electric power.

According to the invention described in claim 2, in addition to the function of the invention described in claim 1, the power supply from the power source is determined by the power supply determination means, and the discharge control means determines the determination. Based on the result, the charging means discharges the charging power of the capacitor.

According to the invention described in claim 3, in addition to the function of the invention described in claim 2, the discharge from the capacitor connects the high potential side of the capacitor and the ground with a switching element. Done by.

According to the invention described in claim 4, in addition to the effect of the invention described in claim 2, the discharge from the capacitor is performed by the continuous power supply to the electromagnetic control valve.

[0025]

【Example】

(First Embodiment) Hereinafter, a first embodiment in which the present invention is embodied in a cleaning device for a male urinal as a sanitary device will be described with reference to FIGS.
Follow the instructions below. The present embodiment is different only in that the discrimination circuit 30 and the discharge circuit 40 are added to the conventional control circuit section 7 and that the control operation of the microcomputer 15 based on both circuits 30 and 40 is different. . Therefore, the points different from the conventional one will be described in detail, and the same configurations will be denoted by the same reference numerals and the description thereof will be omitted.

In FIG. 1, the detection circuit 30 which constitutes the power supply discriminating means is composed of a diode 31, a Zener diode 32, a transistor 33 and resistors 34 and 35. The diode 31 has an anode connected to the full-wave rectifier 11 and a cathode connected to the constant voltage circuit 14. The capacitor 13 is connected between the cathode of the diode 31 and the ground. The Zener diode 32 has its cathode connected to the full-wave rectifier 11 and its anode connected to the base of the transistor 33 via the resistor 34. Therefore, the full-wave rectified voltage Vs shown in FIG. 3 from the full-wave rectifier 11 is input to the cathode of the Zener diode 32 so that the diode 31 does not affect the charging voltage of the capacitor 13. Therefore, when the voltage value of the full-wave rectified voltage Vs input to the cathode of the Zener diode 32 becomes a predetermined value or more, the Zener diode 32 applies the base current to the transistor 33. That is, the transistor 33 periodically inputs the base current while the AC power supply AC is supplied.

The collector of the transistor 33 is a resistor 35.
Is connected to the power supply line 18 via the, and the emitter is grounded. Therefore, the transistor 33 performs on / off operation based on the base current that is periodically input. That is, while the AC power supply AC is being supplied, the transistor 3
3 repeats on / off operation. And AC power supply AC
Is cut off, the transistor 33 is turned off.

The collector of the transistor 33 is connected to the input port P5 of the microcomputer 15. Input port P
The ON / OFF signal G of the transistor 33 is output to the terminal 5.
Therefore, the detection circuit 30 is connected to the input port P of the microcomputer 15.
When the AC power supply AC is being supplied to the power supply circuit section 6 with respect to 5, the ON / OFF signal G is output. On the contrary, the detection circuit 30 causes the on / off signal G to disappear when the AC power supply AC is not supplied to the power supply circuit section 6 for the input port P5 of the microcomputer 15.

Next, the discharge circuit 40 will be described. The discharge circuit 40 is composed of a transistor 41 and resistors 42 and 43. The transistor 41 has a collector connected to the capacitor 13 via a resistor 42 and an emitter grounded. The base of the transistor 41 is connected to the output port P6 of the microcomputer 15 via the resistor 43. Therefore, the discharging circuit 40 discharges the charging voltage of the capacitor 13 via the transistor 41 when the discharging signal S is output from the output port P6 of the microcomputer 15 and the transistor 41 is turned on.

When the on / off signal G input from the input port P5 disappears (turns off), the microcomputer 15 as the power supply determination means and the discharge control means measures the elapsed time from that point by the timer 15c. . Then, when the elapsed time until the ON / OFF signal G is input again is within 200 ms, the microcomputer 15 is in a state of performing normal cleaning as it is not a power failure. Also, the microcomputer 15
Determines that there is a power outage when the elapsed time from the disappearance of the on / off signal G until it is input again exceeds 200 ms. Then, the valve position of the electromagnetic control valve 4 is set to the RAM 15
The judgment is made based on the data stored in b. Microcomputer 1
When the electromagnetic control valve 4 is in the valve open position, 5 outputs the discharge signal S after outputting the valve closing signal C of one pulse from the output port P4 to the valve driving circuit 17 as the valve driving output.
Further, the microcomputer 15 outputs the continuous discharge signal S from the output port P6 when the electromagnetic control valve 4 is already in the valve closed position.
Is immediately output to the discharge circuit 40. Furthermore, microcomputer 1
5 is a state in which the discharge signal S is being output (that is, a state in which the charge voltage of the capacitor 13 is operable), and when the on / off signal G is input, the output of the discharge signal S is stopped because the power failure has ended To do.

Next, the operation of the cleaning apparatus of this embodiment will be described with reference to the flow chart of FIG. When the switch 12 is closed and the power is turned on, the microcomputer 15 is initially set. Therefore, the microcomputer 15 first performs the initial cleaning according to the control program (step 1, hereinafter referred to as S1). Further, the capacitor 13 is charged when the power is turned on. Next, the microcomputer 15 executes normal cleaning based on the light reception signal from the detection unit control circuit 16 (S2, 3).

Now, if the on / off signal G is interrupted and exceeds 200 ms after the interruption, the microcomputer 15 determines that there is a power failure (S2). The microcomputer 15 has a RAM 15
Based on the data of b, it is determined whether the electromagnetic control valve 4 is in the valve closed position (S4). When the electromagnetic control valve 4 is not in the valve closed position, the microcomputer 15 outputs a valve close signal C to the valve drive circuit 17 to switch the electromagnetic control valve 4 from the valve open position to the valve closed position (S5). . Then, the microcomputer 15 outputs the discharge signal S from the output port P6 to the discharge circuit 40 (S6). The microcomputer 15 immediately outputs the discharge signal S when the electromagnetic control valve 4 is in the valve closed position. As a result,
The transistor 41 is turned on, and the charge charged in the capacitor 13 is rapidly discharged through the resistor 42. On this occasion,
Electric power for driving the microcomputer 15, the electromagnetic control valve 4, etc. is supplied from the capacitor 13. Also, the microcomputer 15
While the discharge signal S is being output, while the voltage supplied from the capacitor 13 is not lower than the operating voltage of the microcomputer 15, the output of the discharge signal S is stopped when the on / off signal G is input again (S7, 8). ). Then, the microcomputer 15 stands by to newly perform normal cleaning. Further, the microcomputer 15 stops the operation when the voltage supplied from the capacitor 13 becomes equal to or lower than the operating voltage while the discharge signal S is being output (S7, 9). It should be noted that the charging voltage of the capacitor 13 changes from the time when the valve closing signal C is output to the microcomputer 15
It takes about 100 ms, for example, until the voltage becomes less than the operating voltage. Therefore, the time from the interruption of the on / off signal G until the operating voltage is not supplied to the microcomputer 15 is about 300 ms.

As described in detail above, according to the sanitary ware cleaning apparatus of this embodiment, the discrimination circuit 30 causes the AC power supply AC to operate.
Of AC power supply is stopped for 200ms
The state in which the voltage exceeds V is judged to be a power failure, and the discharge circuit 40 discharges the charging voltage of the capacitor 13. As a result, even when the switch 12 is opened to stop the power supply to the cleaning device, the charge of the capacitor 13 is quickly discharged and the microcomputer 15 stops operating. Therefore, when cleaning all the toilet bowls 1 simultaneously, even if the switch 12 is once opened and then quickly closed, each cleaning device can be made to perform the initial cleaning. (Second Embodiment) Next, a second embodiment of the present invention embodied in a urinal cleaning device will be described with reference to FIGS. The present embodiment is different only in that the discrimination circuit 30 is added to the control circuit section 7 of the conventional example, and the control operation of the microcomputer 15 based on the discrimination circuit 30 is different. The discrimination circuit 30 has the same structure as the discrimination circuit 30 of the first embodiment. Therefore, only the control operation of the microcomputer 15 based on the determination circuit 30 will be described in detail, and the same components will be denoted by the same reference numerals and the description thereof will be omitted.

When the on / off signal G input from the input port P5 disappears, the microcomputer 15 measures the elapsed time from that point by the timer 15c. Then, when the elapsed time is within 200 ms until the on / off signal G is input again, the microcomputer 15 remains in the state of performing the normal cleaning because it is not a power failure. Also, the microcomputer 15
The elapsed time until the ON / OFF signal G is input again is 2
When it exceeds 00 ms, it is determined that there is a power failure. Then, the microcomputer 15 outputs a continuous valve closing signal C from the output port P4 to the valve drive circuit 17 regardless of the open / closed state of the electromagnetic control valve 4 at that time. That is, the valve closing signal C is
Unlike the one-pulse valve closing signal C that is output during normal cleaning, this is a signal that is output even after the electromagnetic control valve 4 is driven to switch from the valve open position to the valve closed position. When the on / off signal G is input while the microcomputer 15 is outputting the valve closing signal C, the output of the valve closing signal C is stopped because the power failure has ended. Next, the operation of the cleaning apparatus of this embodiment will be described according to the flowchart of FIG. Also in this embodiment, similarly to the first embodiment, the microcomputer 15 first performs the initial cleaning when the switch 12 is closed and the power is turned on (S11). Also, the capacitor 13 is charged. Further, the microcomputer 15 executes normal cleaning based on the light reception signal from the detection unit control circuit 16 (S12, 13).

Now, when the on / off signal G is interrupted and exceeds 200 ms after the interruption, the microcomputer 15 outputs a continuous valve closing signal C to the valve drive circuit 17 regardless of the open / closed state of the electromagnetic control valve 4. Output (S14). Valve drive circuit 1
7 continues to drive the solenoid control valve 4 using the charging voltage of the capacitor 13 to keep it in the valve closed position. As a result, the charging voltage of the capacitor 13 is discharged in a time t shorter than the conventional discharging time. When the voltage supplied from the capacitor 13 does not fall below the operating voltage of the microcomputer 15 while the microcomputer 15 is outputting the valve closing signal C, if the on / off signal G is input again, the valve closing signal C is input.
Is stopped (S15, 16). Then, the microcomputer 15 stands by to newly perform normal cleaning. Further, the microcomputer 15 stops the operation when the voltage supplied from the capacitor 13 becomes equal to or lower than the operating voltage while the valve closing signal C is being output (S15, 17).

As described above, according to the present embodiment, the determination circuit 30 determines the supply of the AC power supply AC, and when the supply stop exceeds 200 ms, it is determined that there is a power failure, and the valve is continuously closed. The signal C is output to the valve drive circuit 17. As a result, even when the switch 12 is opened to stop the power supply to the cleaning device, the charge of the capacitor 13 is quickly discharged and the microcomputer 15 stops operating. Therefore, when cleaning all the toilet bowls 1 simultaneously, it is possible to open the switch 12 once and then immediately close it to cause each cleaning device to perform the initial cleaning. (Third Embodiment) Next, a third embodiment in which the present invention is embodied in a urinal cleaning device will be described with reference to FIGS. The present embodiment is different in that the conventional power supply circuit section 6 is replaced by the battery 50, and that the control circuit section 7 is provided with the same discharge circuit 40 and determination circuit 51 as in the first embodiment. The only difference is that the control operation of the microcomputer 15 based on the two circuits 40 and 51 is different. Therefore, the points different from the conventional one will be described in detail, and the same configurations will be denoted by the same reference numerals and the description thereof will be omitted.

In FIG. 7, the judgment circuit 51 is composed of a diode 52, a comparator 53 and a resistor 54. The diode 52 has an anode connected to the battery 50 and a cathode connected to the constant voltage circuit 14. The capacitor 13 is connected between the cathode of the diode 52 and the ground. The inverting input terminal of the comparator 53 is connected to the anode of the diode 52, and the non-inverting input terminal is connected to the cathode of the diode 52. The output end of the comparator 53 is connected to the input port P5 of the microcomputer 15. Therefore, the battery 5
When 0 is connected, the anode potential of the diode 52 becomes higher than the cathode potential, and when the battery 50 is removed, the cathode potential becomes higher than the anode potential. Then, the comparator 53 outputs a determination signal J which becomes L level when the battery 50 is connected and becomes H level when the battery 50 is removed. or,
The resistor 54 fixes the potential of the inverting input terminal of the comparator 53 to 0 with the battery 50 removed.

The microcomputer 15 determines whether or not the battery 50 is removed based on the determination signal J. That is, when the determination signal J changes from L level to H level, the microcomputer 15
The time elapsed from that point is measured by the timer 15c.
Then, when the elapsed time until the determination signal J becomes L level again is within 1 second, the microcomputer 15 recharges the battery 5
The discharge signal S is not output because 0 is not removed. Further, when the elapsed time until the determination signal J becomes L level again exceeds 1 second, the microcomputer 15 determines the battery 50.
Judge that is removed. Then, the valve position of the electromagnetic control valve 4 is determined based on the data stored in the RAM 15b. The microcomputer 15 outputs a one-pulse valve closing signal C from the output port P4 to the valve drive circuit 17 and then outputs a discharge signal S when the electromagnetic control valve 4 is in the valve open position. Further, the microcomputer 15 immediately outputs the continuous discharge signal S to the discharge circuit 40 from the output port P6 when the electromagnetic control valve 4 is already in the valve closed position. Further, the microcomputer 15 outputs the H level determination signal J while the discharge signal S is being output.
Becomes low, it is determined that the battery 50 has been attached again, and the output of the discharge signal S is stopped.

Next, the operation of the cleaning apparatus of this embodiment will be described with reference to the flowchart of FIG. When the battery 50 is attached, the microcomputer 15 is initially set and the capacitor 13 is charged. In this state, the potential of the anode of the diode 52 becomes higher than the potential of the cathode, so that the L-level determination signal J is output to the microcomputer 15. The microcomputer 15 executes normal cleaning based on the light reception signal from the detection unit control circuit 16 (S21, S2).
2).

When the battery 50 is removed, the cathode potential of the diode 52 becomes higher than the anode potential because the capacitor 13 is charged. As a result, the determination signal J input to the microcomputer 15 becomes H level.
Now, when the determination signal J goes to the H level and 1 second is exceeded from the time when the decision signal J goes to the H level, the microcomputer 15 causes the battery 5
It is determined that 0 has been removed (S21). Then, the microcomputer 15 determines whether or not the electromagnetic control valve 4 is in the valve closed position based on the data in the RAM 15b (S23). When the electromagnetic control valve 4 is not in the valve closed position, the microcomputer 15 outputs a valve close signal C to the valve drive circuit 17 to switch the electromagnetic control valve 4 from the valve open position to the valve closed position (S24). Further, the microcomputer 15 outputs the discharge signal S to the discharge circuit 40 (S
25). When the electromagnetic control valve 4 is in the valve closed position, the microcomputer 15 immediately outputs the discharge signal S. As a result, the transistor 41 is turned on and the electric charge charged in the capacitor 13 is rapidly discharged through the resistor 42. Further, the microcomputer 15 outputs the discharge signal S when the determination signal J changes from H level to L level again while the voltage supplied from the capacitor 13 does not become lower than the operating voltage of the microcomputer 15 while outputting the discharge signal S. Output (S2
6, 27). Then, the microcomputer 15 stands by to perform new normal cleaning. Further, the microcomputer 15 stops its operation when the voltage supplied from the capacitor 13 becomes equal to or lower than the operating voltage while the discharge signal S is being output (S2
6, 28).

As described above, according to the cleaning apparatus of this embodiment, the determination circuit 51 determines the supply of the battery voltage, and when the supply of the battery voltage is stopped for more than 1 second, the battery 5 is discharged.
0 is judged to be in the removed state, and the discharge circuit 40
Then, the charging voltage of the capacitor 13 is discharged.
As a result, even when the battery 50 is once attached and then removed, the charge of the capacitor 13 is quickly discharged and the microcomputer 15 stops operating. Therefore, when the control circuit unit 7 is inspected, the battery 50 once attached can be removed and then immediately inspected.

The present invention is not limited to the above embodiment, but may be constructed as follows. (1) In the third embodiment, instead of discharging the charging power of the capacitor 13 by the discharging circuit 40, by continuously outputting the valve closing signal C to the valve driving circuit 17 as in the second embodiment. It may be configured to consume the charging voltage of the capacitor 13.

(2) In each of the embodiments, the control by the microcomputer 15 may be controlled by the wired logic. (3) In the first embodiment, the time from when the on / off signal G is not input until the valve closing signal C and the discharge signal S are output, and in the second embodiment, the on / off signal G is input. The time from when the valve is closed until the valve closing signal C is output may be changed appropriately. Further, in the third embodiment, the judgment signal J
The time from when the signal becomes H level until the valve closing signal C is output may be changed appropriately.

(4) In each embodiment, the bridge rectifier circuit (full-wave rectifier circuit) 12 of the power supply circuit section 6 may be a half-wave rectifier circuit. (5) The constant voltage circuit 14 may be omitted in each embodiment.

(6) In each embodiment, the NPN transistors 33 and 41 may be replaced with other switching elements such as FETs. (7) The present invention is applied to not only men's urinals, but also, for example, a cleaning device for sanitary ware such as a wash basin.

The technical ideas other than the claims that can be understood from the above-described embodiments will be described below along with their effects. (1) In the sanitary ware cleaning device according to claim 1, the power supply determining means is a transistor 33 which is switched by the full-wave rectified voltage VS and outputs a pulsed on / off signal G, and an on / off signal G. And a microcomputer 15 that determines the supply of power by inputting. According to this configuration, the supply of commercial power can be determined by the microcomputer.

(2) In the sanitary ware cleaning device according to claim 1, the power supply discriminating means compares the potential of the diode 52 for inputting a DC voltage with the potentials of the anode and cathode of the diode 52 to generate the determination signal J. It is composed of a comparator 53 for outputting and a microcomputer 15 for inputting a judgment signal J to judge the supply of power. According to this structure, the supply of the DC power supply can be determined by the microcomputer.

[0048]

As described in detail above, according to the first and second aspects of the invention, the reserve power for returning the electromagnetic control valve in the valve open position to the valve closed position in the event of a power failure or the like is stored in the capacitor. In addition to being able to store electricity in the air, it can immediately discharge when the electromagnetic control valve is placed in the valve closed position.

According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, the discharge circuit can be constructed with a simple structure. According to the invention described in claim 4, in addition to the effect of the invention described in claim 2, it is possible to perform the discharge without newly configuring the discharge circuit.

[Brief description of drawings]

FIG. 1 is an electric block diagram of a urinal cleaning device according to a first embodiment.

FIG. 2 is a flowchart showing the operation of the cleaning device.

FIG. 3 is an operation chart of input power supply voltage and discharge timing.

FIG. 4 is an electrical block diagram of a cleaning device according to a second embodiment.

FIG. 5 is a flowchart showing the operation of the cleaning device.

FIG. 6 is an operation chart of input power supply voltage and discharge timing.

FIG. 7 is an electric block diagram of a cleaning device according to a third embodiment.

FIG. 8 is a flowchart showing the operation of the automatic cleaning device.

FIG. 9 is a cross-sectional side view of a part of a conventional urinal and cleaning device.

FIG. 10 is a front view of a urinal and a cleaning device.

FIG. 11 is an electrical block diagram of the cleaning device.

[Explanation of symbols]

1 ... Urinal as sanitary equipment, 4 ... Electromagnetic control valve, 13 ...
A condenser, a microcomputer as a power supply discriminating means and a discharge control means, a valve driving circuit as a valve driving means, a discriminating circuit as a power supply discriminating means, a condenser circuit.
NPN transistor as a switching element, 50 ...
A battery as a power source, 51 ... A determination signal generating circuit as a power supply determining means, AC ... An AC power source as a power source.

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Claims (4)

(57) [Claims] 1. A capacitor (13) for charging power source power
And when the power supply from the power supply (50, AC) is cut off, the electromagnetic control valve (4) is switched to the valve closed position where the washing water is not supplied to the sanitary ware (1) by the charging power of the capacitor (13). A washing device for sanitary ware, wherein the device for driving sanitary ware has a charging power discharging means for discharging the charging power of the capacitor (13) with the electromagnetic control valve (4) in the valve closed position. 2. The charging power discharging means is a power source (50, A
Power supply determining means (15, 30, 51) for determining whether there is power supply from C) or not, and discharging means for discharging charge power of the capacitor (13);
When there is no power supply based on the determination result of the power supply determination means (15, 30, 51), the discharging means causes the capacitor (1
The cleaning device for sanitary ware according to claim 1, comprising a discharge control means (15) for discharging the charging power of 3). 3. The discharge means comprises a switching element (41) connected between the high potential side of the capacitor (13) and the ground, and the discharge control means (15) is the switching element (4).
3. The cleaning device for sanitary ware according to claim 2, wherein 1) is switched to connect between the high potential side of the capacitor (13) and the ground. 4. The discharging means includes valve driving means (17) for driving the electromagnetic control valve (4), and the discharging control means (15) controls the electromagnetic control valve (4) by the valve driving means (17). The sanitary device cleaning device according to claim 2, wherein the sanitary device cleaning device is continuously driven to a closed position.