JPH0222173B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toilet bowl cleaning device that automatically cleans the toilet bowl by sensing the user of the toilet bowl.

Conventionally, there have been various structures for this type of toilet bowl cleaning device, but the representative one is the
There is one in Publication No. 19420.

The device disclosed in Japanese Patent Publication No. 56-19420 has a sensing part that detects the use of the toilet, an electric control part that operates based on the sensing signal, and a supply of flush water to the toilet based on the output of the electric control part. A water supply section is provided, and an electric control section is configured to allow a predetermined time period from sensing to supplying cleaning water to be adjusted as appropriate, and to ignore the sensing signal during that time period. However, this system supplies flush water to the toilet bowl only after a predetermined period of time has passed since the first use, even if many people use the toilet during a predetermined time. Not only is it smelly, but the toilet bowl is also very dirty, making it both unpleasant and unsanitary.

Further, even if there are few people using the toilet, urine spoils quickly when the outside temperature is high, such as in summer, and the odor becomes strong before the predetermined time is reached, causing discomfort.

Therefore, the technical problem to be solved by the present invention is to automatically change the interval at which the toilet bowl is flushed depending on the outside temperature, and when many people use the toilet bowl within a predetermined time, even if the predetermined time has elapsed. The method is to supply water to the toilet bowl even before the toilet is used a predetermined number of times.

The technical means taken by the present invention to achieve the above-mentioned technical problem include a sensing unit that detects the use of a toilet bowl;
The electric control section is equipped with an electric control section that operates based on a sensing signal of the sensing section, and a water supply section that operates based on the output of the electric control section and supplies flush water to the toilet bowl, and the electric control section has a counter that counts the sensing signals. a counter control section that includes a circuit and generates a first output signal when the count of sensing signals reaches a predetermined number; a timer circuit that is activated by the sensing signal; and a timer circuit that changes the time-up time of the timer circuit depending on the room temperature. a timer control section having an outside temperature correction circuit and generating a second output signal when the timer circuit times up;
The output control section is provided with an output control section that generates the above output when receiving the output signal or the second output signal, and also resets the count of the counting circuit and the elapsed time of the timer circuit.

Therefore, when the count of sensing signals reaches a predetermined number, purified water is supplied to the toilet bowl even before the timer circuit times up, and even if the count of sensing signals does not reach the predetermined number, the timer circuit times up. Once the time has elapsed, flushing water will be supplied to the toilet bowl.

Furthermore, the time-up time is automatically set to an optimal time depending on the room temperature.

Since the present invention has the above configuration, it has the following unique effects.

(1) When the toilet is used frequently, flushing water is supplied to the toilet as soon as the number of users reaches a predetermined number, so the concentration of sewage in the trap of the toilet and the drain pipe does not increase, and scale adhesion to these areas is prevented. can be reduced.

(2) When the toilet is not used very often, flush water is supplied to the toilet at predetermined intervals, and the time interval is automatically changed according to the room temperature, so the toilet can be used for the optimal time according to the room temperature. It is cleaned at regular intervals to prevent urine from rotting and emitting a bad odor even when the outside temperature is high, such as in the summer.

Hereinafter, an example of implementation of the present invention will be described based on the drawings.

In the figure, b is a sensing section, c is an electric control section, d is a water supply section, and a is a toilet bowl, and the sensing section b is constituted by a known photoelectric sensor that changes the amount of reflected light.

As shown in FIG. 3, the sensing part b has a main body 1 that is connected to a base 2, a support 3 that is rotatable in a horizontal plane with respect to the base 2, and a support that is attached to the tip of the support 3 in a vertical plane. The head 4 is rotatably attached to the head 4, and the head 4 is equipped with a light projecting section 5, a light receiving section 6, and a pilot lamp 7.

Therefore, the projection angle of this sensing part b can be changed freely.

This sensing part b is attached to the ceiling near the toilet bowl a, and projects infrared light, visible light, ultraviolet light, etc., for example, infrared light, into the space where the toilet user is located.

A part of the above-mentioned infrared light is diffusely reflected by the floor and walls of the toilet, and a certain amount of reflected light is received by the light receiving section 6. However, when a person using the toilet enters the projection space, part of the projected light is absorbed by the human body. When the amount of light received by the light receiving section 6 changes as more of the light is reflected or absorbed, a signal is sent to the electric control section c.

As shown in the block diagram of FIG. 4, the electric control section c includes a counter control section c-1 and a timer control section c.
-2, and also integrally includes a cleaning switch part c-3 and an equipment protection control part c-4.

The timer control unit c-2 stores the sensing signal of the sensing unit b taken out through the OR circuit 8 and the gate circuit 9, and includes a first memory circuit 10 that operates the _T1 timer circuit 11, and a signal of the first memory circuit 10. It operates _{for 1} hour at T, and when the time is up, it outputs a second output signal to the _T0 timer circuit 27, which will be described later.
The _T1 timer circuit 11, the first memory set circuit 12 which receives the signal from the _T0 timer circuit 27 and sends a signal to the first memory circuit 10 to erase its memory, and the _T1 timer circuit 11 which operates according to the room temperature. It is composed of an outside temperature correction circuit 13 that outputs a signal to change the time.

The above-mentioned outside temperature correction circuit 13 constitutes a CR timer using, for example, a thermistor and a capacitor, and is designed to shorten _T1 time when the outside temperature becomes high, and lengthen _T1 time when the outside temperature becomes low. In summer, when urine spoils quickly, we try to wash it early.

Note that the _T1 time can be set by adjusting the time as appropriate.

Above, the relationship between temperature and T ₁ hour is arbitrary; the lower the temperature, the longer T ₁ hour, and the higher the temperature, the longer T ₁ hour.
It would be better if the time was shorter.

The counter control unit c-1 stores the sensing signal taken out through the OR circuit 8 and the gate circuit 9 and starts the _T3 timer circuit 15.
A memory circuit 14 and a _T3 timer circuit 15 which operates for T3 hours with the signal from the _third memory circuit 14 and generates a pulse signal when the time is up to activate the third memory reset circuit 16, and a pulse signal from the _T3 timer circuit 15. 3rd memory circuit 1
The third memory reset circuit 16, which issues a signal to erase the memory of 4, and the pulse signal issued by the _T3 timer circuit 15 are counted, and when the number of taunts reaches a predetermined number set by the counter setting external switch 18, the _T0 timer is activated. A counting circuit 17 that outputs a first output signal to the circuit 27, a counter setting external switch 18 that sets the count number by operating an external switch, and a counter setting external switch 18 that receives a signal from the _T0 timer circuit 27 and resets the counting of the counting circuit 17. It consists of a counter reset circuit 19.

The cleaning switch part c-3 is connected to the second memory circuit 2.
Cleaning switch 2 that issues an operation signal to activate 1
0 and receives a signal from the cleaning switch 20,
The _T2 timer circuit 22 stores the signal and
and the second memory circuit 21 which sends a signal to the _T0 timer circuit 27, and operates for _T2 hours upon receiving the signal from the second memory circuit 21, and when the time is up, issues a signal to activate the second memory reset circuit 23.
It is composed of a T ₂ timer circuit 22 and a second memory reset circuit 23 which receives a signal from the T ₂ timer circuit 22 and erases the memory in the second memory circuit 21 .

Equipment protection control unit c-4 is _T4 timer circuit 2
4 and a _T4 timer reset circuit 25,
By using toilet bowl a or cleaning switch 2
When the T ₀ timer circuit 27 is started and the output circuit 28 is activated by the input of 0, the T ₄ timer reset circuit 25 is activated and the elapsed time of the T ₄ timer circuit 24 is reset.

T ₀ When the timer circuit 27 times up, T ₄
The operation of the timer reset circuit 25 is stopped and T ₄
Timer circuit 24 is started.

That is, the equipment protection control unit c-4 is
_T0 timer circuit 2 is used to prevent the sealing water of toilet bowl a from getting steam or scale when it is not flushed.
7 to activate the output circuit 28,
The _T4 timer circuit 24 is configured to be settable, for example, from 3 hours to 24 hours, and the OR circuit 26, the _T0 timer circuit 27, and the output circuit 28 are connected to the timer control section c-
2. It is shared by the counter control section c-1 and the cleaning switch section c-3.

T ₀ timer circuit 27 is a counter control section c-
1, the timer control section, the signal from c-2, the cleaning switch section c-3, and the equipment protection control section c-4 through the OR circuit 26, and output the signal for _T0 time. The first memory reset circuit 12 and the third memory reset circuit 1
6. The counter reset circuit 19 and the _T4 timer reset circuit 25 are activated, respectively, and the output circuit 28 amplifies the output signal and energizes the water supply section d.

Although a tank-type electromagnetic siphon or the like may be used for the water supply part d, in this embodiment, a known electromagnetic flush valve that integrally combines a flush valve 29 and a driving electromagnet 30 is used.
The inlet side of the toilet bowl 9 is connected to a water supply source via a water supply pipe 36, and the outlet side thereof is connected to a toilet bowl a via a water purification pipe 37.

When the water supply section d receives the output from the electric control section c, the plunger 32 is attracted toward the fixed iron core 33 by the electromagnetic force of the coil 31 of the electromagnet 30, and the push rod 34 provided integrally with the plunger 32 is advanced. and press the activation rod 35 of the flash valve 29,
Activate the flush valve 29 to flush flush water to the toilet bowl a.

Then, after T ₀ hours, the output of the electric control section c disappears and the pressing force on the push rod 34 is released, the starting rod 35 retreats due to the elastic force of the spring 36, and the flush valve 29 releases one wash water. The system is configured to drain water and shut off the water supply.

The operation of this toilet bowl cleaning device will be explained below. When the sensing part b senses the use of the toilet bowl a, the sensing signal passes through the OR circuit 8 and the gate circuit 9, and is sent to the first memory circuit 10 of the timer control part c-2 and the third memory circuit of the counter control part c-1. 14
The first memory circuit 10 activates the _T1 timer circuit 11.

On the other hand, when the third memory circuit 14 receives the sensing signal, it enters a memorized state and starts a _T3 timer circuit 15 which can be set, for example, from 15 seconds to 60 seconds.

When the third memory circuit 14 is in the storage state, it does not accept sensing signals. After the _T3 timer circuit 15 has started and the duplicate detection prevention time _T3 has elapsed, the _T3 timer circuit 15 times up and generates a pulse signal, and also activates the third memory reset circuit 16 to release the memorized state of the third memory circuit 14. death,
The third memory circuit 14 will accept new sensing signals.

The counting circuit 17 counts the pulse signals, and when the pulse signals reach a predetermined number (in this embodiment, it is set to 3) set by the counter setting external switch 18, it generates a first output signal and outputs a T signal. ₀ timer circuit 27 and T ₀ timer circuit 27
An output is generated from the T ₀ time output circuit 28, which is in operation, to operate the water supply section d.

Further, the counter reset circuit 19 is activated by the operation of the T ₀ timer circuit 27 to return the count of the counting circuit 17 to 0, and the first memory reset circuit 12 is activated to erase the memory of the _first memory circuit 10. 11 elapsed time is reset.

Therefore, T ₀ timer circuit 27 and output circuit 2
8 constitutes an output control section c-5.

It should be noted that the timer control section c-2 generates a second output signal by time-up when the count of the counter control section c-1 does not reach a predetermined number 3 during the time _T1 , and outputs a second output signal to the _T0 timer circuit 27. is activated, the counter reset circuit 19 is activated, and the counting circuit 1 is activated.
The count of 7 is returned to 0, and the output circuit 28 generates an output.

Further, when water is to be flushed regardless of the user's detection, such as when cleaning the toilet bowl a, the switch 20 of the cleaning switch section c-3 is turned on and the second memory circuit 21 is activated. Second memory circuit 21
Once the switch 20 is turned on, it is memorized and starts the T ₂ timer circuit 22 and activates the T ₀ timer circuit 27, so the T ₀ time output circuit 28 is activated and the water supply section d is driven.
At this time, due to the operation of the T ₀ timer circuit 27,
T ₁ Elapsed time of timer circuit 11 and counting circuit 1
The counts of 7 are also reset. On the other hand, when the _T2 timer circuit 22 times out, it activates the second memory reset circuit 23, erases the memory in the second memory circuit 21, and waits for the next cleaning switch 20 to be turned on.

Therefore, when the first operation signal is generated, the second memory circuit 21 memorizes it and performs cleaning, but no matter how many times the switch 20 is turned on again while the signal is being memorized, the second memory circuit 21 does not accept the signal and the cleaning is performed. will not be carried out. This T ₂ time is tentatively called a prohibition time, and the T ₂ time is set to, for example, 10 seconds to 30 seconds. _T2 timer circuit 22 times up,
The second memory reset circuit 23 is activated and the second
After the memory in the memory circuit 21 is erased, the switch 2
When 0 is input, cleaning is performed again at that point.

On the other hand, in the equipment protection control unit c-3, the T ₀ timer circuit 27 is started by using the toilet a or by turning on the cleaning switch 20, and the output circuit 28 is activated.
When activated, the _T4 timer reset circuit 25 is activated and the elapsed time of the _T4 timer circuit 24 is reset.

T ₀ When the timer circuit 27 times up, T ₄
The operation of the timer reset circuit 25 is stopped and T ₄
Timer circuit 24 is started. Therefore, T ₄ hours will be tentatively called equipment protection time.

T ₄ Before the timer circuit 24 times up, the toilet bowl a is used or the cleaning switch 2 is turned off.
When the T ₀ timer circuit 27 starts by inputting 0, the elapsed time of the T ₄ timer circuit 24 is reset by the T ₄ timer reset circuit 25. However, when the T ₀ timer circuit 27 does not start for a long time such as at night, the T ₄ timer circuit 24 time up,
The T ₀ timer circuit 27 is started and water is supplied to the toilet bowl a.

When the T ₀ timer circuit 27 is started, the T ₄ timer reset circuit 25 is activated and the elapsed time of the T ₄ timer circuit 24 is reset, and when the operation of the T ₀ timer circuit 27 is stopped, the T ₄ timer circuit 24 is started again. .

A time chart of the toilet bowl cleaning device of this embodiment is shown in FIG.

The present invention is not limited to the above-described embodiments, and can be modified in various ways.

For example, as the sensing part b, a so-called pyroelectric infrared sensor that detects far infrared rays emitted by the human body with a pyroelectric element made of ceramic material such as lead titanate gyriconate, as shown in FIGS. 7 and 8, may be used. It's okay.

This pyroelectric infrared center b is configured to condense infrared radiation emitted from the human body by a concave mirror 38, concentrate energy on the light receiving surface of the pyroelectric element, and increase energy density. The mirror 38 is provided on the lower surface of a substrate 39 mounted on the ceiling, and a sensor unit 40 containing a pyroelectric element is provided in front of the concave mirror 38. The concave mirror 38 is shown in the schematic diagram of FIG. 9 so as to be able to receive the infrared rays radiated by the users of all the toilets a, which are arranged in large numbers, and focus the infrared light on the light receiving surface of the pyroelectric element 41. As shown in FIG. 10, one pyroelectric infrared sensor b is formed by a series of many circular arcs with different curvatures, and forms many beam-shaped detection zones as shown in FIG.

Further, the sensor unit 40 and the concave mirror 38 are provided so as to be rotatable in two directions as shown in FIG. 8 in order to enable adjustment of the detection zone. It is covered with a cover 42 made of polypropylene or the like that allows it to pass through.

When a toilet user stands in front of the toilet bowl a and the far infrared rays emitted from the human body are received by the pyroelectric element 41, this infrared rays are converted into heat on the surface of the pyroelectric element 41, and its temperature increases. Due to the change ΔT, the element 41
The magnitude of its own spontaneous polarization △Pt changes (first
(see Figure 1), generates an electric charge, and converts this electric charge into a sensing signal using an electric circuit such as an amplifier circuit.

If a pyroelectric infrared sensor is used as the sensing part b in this way, one sensing part b can detect the use of multiple toilet bowls a, reducing installation costs, and eliminating fluctuations in the sensing distance and generation of dead zones. , the sensing is also reliable.

Further, in the electric control section c, it is convenient to provide a cleaning switch section c-3 and an equipment protection section c-4, but these are not necessarily necessary.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a toilet bowl cleaning device showing an embodiment of the present invention, Fig. 2 is a sectional view of the water supply section, Fig. 3 is a perspective view of the sensing section, Fig. 4 is a block diagram, and Fig. 5 is a The time chart, FIG. 6, is a circuit configuration diagram. 7th
The figure is a perspective view of another embodiment of the sensing section, FIG. 8 is an exploded perspective view of the same sensing section, and FIG. 9 is a schematic diagram of the same sensing section.
FIG. 10 is a schematic diagram of the entire toilet bowl cleaning device using the sensing section, and FIG. 11 is a graph explaining the operation of the sensing section. a...Toilet bowl, b...Sensing unit, c...Electric control unit, d...Water supply unit, c-1...Counter control unit, c-2...Timer control unit, c-5...Output control unit , 17... Counting circuit, 11... Timer circuit (T ₁ ), 13... Outside temperature correction circuit.

Claims (1)

[Claims] 1. Comprising a sensing section that detects the use of the toilet bowl, an electric control section that operates based on the sensing signal of the sensing section, and a water supply section that operates based on the output of the electric control section and supplies flushing water to the toilet bowl, The electric control section includes a counter control section that includes a counting circuit that counts the sensing signals and generates a first output signal when the counting of the sensing signals reaches a predetermined number, and a timer circuit that is activated by the sensing signal and the timer. a timer control section that has an outside temperature correction circuit that changes the time-up time of the circuit according to the room temperature and generates a second output signal when the timer circuit times up; and a timer control section that receives the first output signal or the second output signal. A toilet bowl cleaning device comprising: an output control section that generates the above output and also outputs a signal that resets the count of the counting circuit and the elapsed time of the timer circuit.