JPH048577B2 - - Google Patents

Description

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

(Prior Art and its Problems) Hitherto, various structures of this type of toilet bowl cleaning device have been known, and the simplest one is the one disclosed in Japanese Patent Publication No. 47-5784 as shown in Fig. 10. . To explain the system shown in Fig. 10, this system includes a sensing section 2 installed at the entrance 24 of the toilet 23, which detects the use of the toilet bowl 1 by entering and exiting the toilet 23, and generates a sensing signal, and a sensing section 2 which counts the sensing signals and sets a predetermined value. This is a toilet bowl cleaning device equipped with an electric control section 3 that generates an output when the number reaches a certain number, and a water supply section 4 that supplies flushing water to the toilet bowl based on the output of the electric control section 3. It is installed at the entrance to the toilet, so
Since the system detects and counts people who enter the toilet not to relieve themselves but to wash their hands, there is a lot of wasted washing and no water-saving effect can be achieved.

In order to eliminate this inconvenience, some toilets have a sensing part installed near the toilet to only sense the user of the toilet, but whenever the user moves and moves out of the sensing area while using the toilet. Even if there is only one user, a sensing signal is generated in a short period of time, and the toilet bowl is flushed when the number reaches a predetermined number, resulting in wasted flushing water being consumed. On the other hand, if the number of sensing signals does not reach a certain number, the toilet bowl may not be flushed for a long time, and the toilet bowl becomes extremely contaminated, causing problems such as foul odors and scale build-up. There is.

Therefore, a predetermined duplicate detection prevention time is started from the time a sensing signal is generated from the sensing section, and the sensing signals within the duplicate detection prevention time are ignored, and after a certain period of time has elapsed, that is, after the duplicate detection prevention time has elapsed, the water supply section Some toilets are equipped with a redundant detection prevention circuit in the electric control unit that activates the toilet, but this type always flushes the toilet bowl after a certain period of time has passed after a sensing signal is generated from the sensing unit. Although the above-mentioned problem of the toilet not being flushed for a long period of time has been resolved, the number of flushes per user is large because it must be flushed even when only one user uses it, and as a result, the problem still remains. The waste of toilet flushing water has not been improved, and it has been impossible to achieve an effective water saving effect, especially in public spaces where there are many users.

(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to prevent the duplication detection circuit provided in the electric control unit from detecting duplication. The number of signals emitted when the detection prevention time has elapsed is counted, and when the number of signals reaches a predetermined number initially set, the toilet bowl is flushed, and the number of signals does not reach a predetermined number within a predetermined time. To ensure that the toilet bowl can be flushed even when the toilet bowl is clean, and to perform effective flushing of the toilet bowl that can achieve a balance between effective water saving effect and prevention of toilet bowl contamination.

(Means for Achieving the Object) Technical means achieved by the present invention to achieve the above object include a sensing section installed near a toilet bowl to sense the user of the toilet bowl and generate a sensing signal; A sensing signal is generated in a toilet bowl cleaning device equipped with an electric control section that counts signals and generates an output when a predetermined number is reached, and a water supply section that supplies flushing water to the toilet bowl based on the output of the electric control section. a redundant sensing prevention circuit that starts a predetermined redundant sensing prevention time from time and ignores sensing signals within the redundant sensing prevention time, and counts a signal that the redundant sensing prevention circuit issues when the redundant sensing prevention time elapses; a counting circuit that starts and operates the water supply section when the signal reaches a predetermined number; and an ignore control section that starts and operates the water supply section when the signal does not reach the predetermined number set by the counting circuit within a predetermined time. The electric control section is configured to include the following.

(Operation) When the sensing part senses the user and a sensing signal is generated by the technical means of raising the air, a predetermined duplicate sensing prevention time starts from the time this sensing signal is generated, and within this time. The sensing signal is ignored, so if you move your body while using the toilet and move out of the sensing area,
Even if a sensing signal is generated again by entering the sensing area again, it will not be counted, and even if several people use it within the duplicate sensing prevention time, it will not be counted, and the number of signals emitted from the duplicate sensing prevention circuit will not be counted. When the predetermined number of toilet bowls is reached, the water supply section is activated to flush the toilet bowl.

Furthermore, even when the number of signals does not reach the initially set predetermined number within a predetermined time, the water supply section operates to flush the toilet bowl.

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

In the figure, 2 is a sensing section, 3 is an electric control section, 4 is a water supply section, and 1 is a toilet bowl, and the sensing section 2 is constituted by a known photoelectric sensor that changes the amount of reflected light.

As shown in FIG. 3, the sensing unit 2 has a main body 5 that is connected to a base 6, a support 7 that is rotatable in a horizontal plane with respect to the base 6, and a support that is attached to the tip of the support 7 in a vertical plane. The head 8 is rotatably attached to the head 8, and the head 8 is equipped with a light projecting section 9, a light receiving section 10, and a pilot lamp 11.

Therefore, this sensing section 2 can freely change the projection angle.

This sensing section 2 is attached to the ceiling of the toilet near the toilet bowl 1, and projects infrared light, visible light, ultraviolet light, etc., for example, infrared light, into the space where the toilet user is located when doing errands.

A part of the upper air infrared light is diffusely reflected by the floor and walls of the toilet, and a certain amount of reflected light is reflected by the light receiving section 10.
However, when a toilet user enters the projection space and a portion of the projected light is further reflected or absorbed by the human body, and the amount of light received by the light receiving section 10 changes, a signal is sent to the electric control section 3.

As shown in the block diagram of FIG. 4, the electric control section 3 includes an OR circuit 3a, a gate circuit 3b, a duplicate detection prevention circuit A, a counting circuit 3e, a counter setting external switch 3i, a counter reset circuit 3j, and an ignore control section B. , equipment protection control section C, cleaning switch section D, _T0 timer circuit 3f and output circuit 3g
Consisting of

Therefore, the sensing signal from the sensing section 2 is sent to the OR circuit 3.
a, duplicate detection prevention circuit A through gate circuit 3b
and enters the ignore control section B.

The duplicate detection prevention circuit B includes the first memory circuit 3
c, a _T1 timer circuit 3d and a first memory reset circuit 3h, and the sensing signal passing through the gate circuit 3b enters the first memory circuit 3c.

When the first memory circuit 3c receives the sensing signal, it enters a storage state and starts the _T1 timer circuit 3d.

When the first memory circuit 3c is in the storage state, it does not accept the sensing signal. When the _T1 timer circuit 3d starts and the duplicate detection prevention time _T1 elapses, the _T1 timer circuit 3d times up and generates a pulse signal, and also activates the first memory reset circuit 3h to reset the memory state of the first memory circuit 3c. The first memory circuit 3c will accept a new sensing signal.

T ₁ hour is set to a relatively short average time required for errands, for example, 10 to 50 seconds.

The counting circuit 3e counts the pulse signal,
When the pulse signal reaches a predetermined number arbitrarily set by the counter setting external switch 3i, the _T0 timer circuit 3f is started, and an output is generated from the _T0 output circuit 3g during the time that the T0 _timer circuit 3f is operating. Activate the water supply section 4.

Furthermore, the counter reset circuit 3j is activated by the operation of the output circuit 3g, and the count of the counting circuit 3e is returned to zero.

The ignore control section B is for obtaining an output in T2 hours when the sensing section ₂ senses a person and the count does not reach the set number set by the _counter setting external switch 3i. The sensing signal passing through the gate circuit 3b is input to the second memory circuit 3l.

When the second memory circuit 3l receives the sensing signal, it enters a memory state and activates the _T2 timer circuit 3k.

When the second memory circuit 3l is in the storage state, it does not accept the sensing signal. The T ₂ timer circuit 3k operates for a time T ₂ based on the signal from the second memory circuit 3l, and when the time is up, generates a signal that activates the T ₀ timer circuit 3f and the second memory reset circuit 3m. The second memory reset circuit 3m operates upon receiving a time-up signal from the _T2 timer circuit 3k or a signal from the third memory circuit 3o of the cleaning switch section D, which will be described later, and releases the memorized state of the second memory circuit 3l. , the counting circuit 3
It is also activated by the output signal when the T ₀ timer circuit 3f is started by the activation of e. As a result, the ignoring control section B is canceled when the counting circuit 3e counts the signals after the overlap detection prevention time elapsed by the overlap detection prevention circuit A and reaches a predetermined number and activates the _T0 timer circuit 3f. However, if the signal does not reach the predetermined number within _T2 hours, the _T2 timer circuit 3k times up and the _T0 timer circuit 3f
The output circuit 3g generates an output to operate the water supply unit 4, and if the number of signals after the overlap detection prevention time does not reach a predetermined number and the toilet has not been flushed for a long time, the toilet will be flushed. This is to prevent contamination from getting worse.

Note that after the second memory circuit 3l is released, a new sensing signal will be accepted.

In addition, the outside temperature correction circuit 3m constitutes a CR timer with, for example, a thermistor and a capacitor,
If the outside temperature is high, T ₂ hours will be shortened, and if the outside temperature is low, T ₂ hours will be lengthened.

In this example, if T ₂ time at 0°C is T ₂ ⁰ hours, T ₂ ¹⁵ hours at 15°C, and T ₂ ³⁰ hours at 30°C, then T ₂ ⁰ = 1.2T ₂ ¹⁵ and T ₂ ³⁰ = 0.8. It is set so that T ₂ ¹⁵ .

The relationship between this temperature and _T2 hours is shown graphically in Figure 5.

As mentioned above, the outside temperature correction circuit 3n is provided.
Changing _T2 time according to changes in outside temperature has the following advantages.

In other words, the time it takes for urine to develop a bad odor varies depending on the temperature; the higher the temperature, the faster the urine decomposes, and if the temperature is high, such as in the summer, the bad odor will build up in the toilet in a short period of time if you do not wash it after using it. However, when the temperature is high, the _T2 time becomes shorter, and even when the number of toilet users is low and the set number of users is not reached, it is possible to clean the toilet quickly and prevent bad odors. can also be reduced.

Note that _T2 time can be set from 30 seconds to 15 minutes.

When the cleaning switch section D receives a signal from the cleaning switch 22, it stores the signal and also outputs T ₃
The third memory circuit 3o sends a signal to the timer circuit 3p and the _T0 timer circuit 3f, and receives the signal from the third memory circuit 3o and operates for _T3 hours, and when the time is up, sends a signal to activate the third memory reset circuit 3q. The third memory reset circuit 3q receives the signal from the third timer circuit 3p and outputs a signal to erase _T2 to the third memory circuit 3o.

Then, when this cleaning switch part D turns on the cleaning switch 22 and activates the third memory circuit 3o, this third memory circuit 3o memorizes it, starts the _T3 timer 3p, and
T ₀ timer circuit 3f is also activated.

Therefore, the T ₀ time output circuit 3g outputs an output to operate the water supply section 4.

On the other hand, when the _T3 timer circuit 3p times out, it activates the third memory reset circuit 3q.
Erase the memory of the third memory circuit 3o. Even if the cleaning switch ₂₂ is turned on again, the third memory circuit 3o will not accept the time T3 stored in the third memory circuit 3o.

Incidentally, when the output circuit 3g generates an output, the second memory reset circuit 3m, counter reset circuit 3j, first memory reset circuit 3c, and fourth timer reset circuit 3r, which will be described later, all operate to cancel all memories.

The equipment protection control unit C starts the _T0 timer circuit 3f and operates the output circuit 3g in order to prevent the sealing water in the toilet bowl 1 from evaporating and scale to adhere when the toilet bowl 1 is not flushed for a long time. It consists of a _T4 timer circuit 3s and a _T4 timer reset circuit 3r.

In the equipment protection control section C, when the _T0 timer circuit 3f is started and the output circuit 3g is activated by using the toilet bowl 1 or turning on the cleaning switch 22, the _T4 timer reset circuit 3r is activated and the _T4 timer circuit is activated. 3 seconds, the elapsed time is reset.

T ₀ When timer circuit 3f times up, T ₄
The operation of the timer reset circuit 3r stops and T ₄
The timer circuit 3s starts.

T ₄ Before the timer circuit 3s times up, the toilet 1 is used or the cleaning switch 2 is turned off.
When the T ₀ timer circuit 3f starts with the input of 2, the elapsed time of the T ₄ timer circuit 3s is reset by the T ₄ timer reset circuit 3r. However, when the T ₀ timer circuit 3f does not start for a long time such as at night, the T ₄ timer circuit 3f starts. 3s time up and T ₀
The timer circuit 3f is started and water is supplied to the toilet bowl 1.

At the same time as the T ₀ timer circuit 3f starts, the T ₀ timer reset circuit 3f operates and the T ₄ timer circuit 3
When the elapsed time of s is reset and the operation of the T ₀ timer circuit 3f stops, the T ₄ timer circuit 3 is activated again.
s starts. In this embodiment, the _T3 time can be set to 10 seconds to 30 seconds, and the _T4 time can be set to 3 hours to 24 hours.

The water supply unit 4 is a known electromagnetic flush valve that integrally combines a flush valve 12 and a driving electromagnet 13. The inlet side of the flush valve 12 is connected to a water supply source via a water supply pipe 14, and the outlet side is connected to a water supply source through a water supply pipe 14. It is connected to the toilet bowl 1 via a drainage pipe 15.

When the water supply section 4 receives the output from the electric control section 3, the plunger 17 is attracted to the fixed iron core 18 side by the electromagnetic force of the coil 16 of the electromagnet 13, and the push rod 19 provided integrally with the plunger 17 is advanced. and press the activation rod 20 of the flash valve 12,
The flush valve 12 is operated to allow flush water to flow into the toilet bowl 1.

Then, after T ₀ hours, the output of the control unit 3 disappears,
When the push rod 19 becomes free, the activation rod 20 is moved back by the elastic force of the spring 21, and the flush valve 12 flows one wash water and then stops the water supply.

FIG. 6 shows a time chart when the count is set to 3.

(Effects of the Invention) Since the present invention has the above-mentioned configuration, it has the following effects.

Due to the overlap detection prevention time of the overlap detection prevention circuit,
During that certain period, no matter how many people use it, it is not counted; the counting circuit counts the number of signals emitted from the duplicate detection prevention circuit, and when the number of signals reaches the predetermined number set at the beginning, the water supply section is activated, so any If you set it to a predetermined number, the toilet will not be flushed unless it is used by at least the predetermined number of people (number of people). Compared to the type that flushes the toilet even if only one person is using it when the detection prevention time is reached, waste of water for flushing the toilet is eliminated, and the number of signals reaches the predetermined number initially set within the predetermined time. Since the water supply section operates even when not in use,
This eliminates the problems of toilet bowl contamination such as foul odors and scale build-up caused by the toilet bowl not being flushed for a long time after the toilet bowl has been used because the number of signals does not reach the predetermined number. , it is possible to effectively clean the toilet bowl by harmonizing the water saving effect with the prevention of contamination of the toilet bowl, especially in office buildings and hospitals where many people gather and the number of users depending on the time of day. It is very convenient and useful when used in different public spaces.

[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 6 is a time chart, FIG. 7 is a circuit configuration diagram, and FIG. 8 is a schematic diagram showing an example of a conventional toilet bowl cleaning device. 1... Toilet bowl, 2... Sensing unit, 3... Electric control unit, 3e... Counting circuit, 4... Water supply unit, A... Duplicate detection prevention circuit, B... Ignoring control unit.

Claims (1)

[Claims] 1. A sensing section installed near the toilet that detects the user of the toilet and generates a sensing signal, an electric control section that counts the sensing signals and generates an output when a predetermined number is reached, and an output of the electric control section. In a toilet bowl cleaning device equipped with a water supply section that supplies flush water to the toilet bowl based on
a redundant sensing prevention circuit that starts a predetermined redundant sensing prevention time from the time a sensing signal is generated and ignores the sensing signal within the redundant sensing prevention time; and a redundant sensing prevention circuit that generates a signal when the redundant sensing prevention time elapses. A counting circuit that counts signals and starts and operates the water supply section when the signal reaches a predetermined number, and a counting circuit that starts and operates the water supply section when the signal does not reach a predetermined number set by the counting circuit within a predetermined time. A toilet bowl cleaning device characterized in that the electric control section includes an override control section that is activated.