JPH04106234A - Automatic cleaner for toilet seat - Google Patents

Abstract

PURPOSE:To prevent waste of water, by providing a touch switch and a sensor sensible of a human body on a flushing device selecting a larger flushing or a smaller flushing in accordance with the required occupied time and by regulating a valve by a controller based on the time when the electric source is jointed and the time interval while a human body is detected. CONSTITUTION:A touch switch 14 and a sensor 16 sensible of a human body are provided on a flushing device for a toilet seat selecting a larger flushing or a smaller flushing in accordance with the required occupied time and a controller 15 provided with a timer, a time-changing means, and a flushing command means is equipped. And after the touch switch 14 is turned on, the time while the human body H is detected is measured by a timer. Only when the time interval is longer than a specified time, a larger flushing command is outputted; but in the case of other shorter time, a smaller flushing command is outputted or no flushing command is outputted. In this way, waste of flushing water can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic flushing device for a toilet bowl, and more particularly to an automatic flushing device that can select a large flush or a small flush as a flushing method for the toilet bowl.

(Prior art) In women's toilets at stations, department stores, etc., it has been empirically shown that the amount of water used for flushing the toilet bowl is sufficient to perform a large flush, regardless of whether the toilet bowl is used for a large or small toilet. It is known that washing water is wasted significantly.

Therefore, we measure the time the booth is occupied, and when the booth is occupied for a short time, it is cleaned with less water (small cleaning), and when the booth is occupied for a long time, it is cleaned with more water (large cleaning). conduct,
A washing device that saves washing water was published in Japanese Patent Application Laid-Open No. 60-14443.
It is proposed in No. 4.

In addition, since this system determines whether the booth is large or small based on the length of time spent in the booth, the usage determined by the user may not necessarily match the actual usage, and the use of dogs may be affected. However, there is a problem that only a small wash is performed and the dirt cannot be completely removed, resulting in a loss of cleanliness. Therefore, if a small wash continues for example 5 times, a large wash is performed instead of a small wash on the 5th time. , which solves the above-mentioned problem.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional cleaning device, there remains the problem that cleanliness is impaired when there is a time interval between small cleanings.

This invention was made in view of the above circumstances, and an object of the present invention is to provide a flushing device that can save water without sacrificing cleanliness, regardless of the frequency of use.

(Means for Solving the Problems) The present invention provides an automatic toilet flushing device that can select between a large flush and a small flush depending on the length of time required for urination, including a timer for setting a predetermined time at startup; A cleaning command means that issues a cleaning command when the remaining time of this timer reaches ; and sets the timer to an initial value; and a cleaning command means that forcibly reduces the remaining time of this timer when small cleaning is selected. The key point is to have time rehabilitation means that allow

(Function) The automatic toilet cleaning device of the present invention performs cleaning after a predetermined period of time has elapsed, and by performing this cleaning, residual waste can also be discharged and cleanliness is maintained. If a small flush is performed before flushing, the predetermined time is shortened and the time between flushes is shortened, so cleanliness is maintained according to the frequency of use of the toilet bowl. I'll come.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show an automatic toilet flushing device according to an embodiment of the present invention, in which FIG. 1 is a schematic side view of the toilet, FIG. 2 is a block diagram, and FIGS. 3 and 4 are a schematic side view of the toilet. It is a flowchart, FIG. 5, or a timing chart.

In FIG. 1, B indicates a booth partitioned by a wall panel 11 and a ceiling panel 12 in the toilet, and a toilet bowl 17 is installed in the booth B.

13 is a door. Touch switch 1 on wall panel 11
4 and a box 15 are fixedly installed, and the ceiling panel 1
2 is provided with a sensor 16 for detecting a person H in the booth B. As shown in FIG. 2, the sensor 16 has a light emitting means 16a that emits infrared light or the like, and a light receiving means 16b that receives the light emitted by the light emitting means 16b, and these light emitting means x 6a, ! l: The light emitting means 16b is connected to a controller 22, which will be described later. This sensor 16 detects the person H based on whether or not light is received by the light receiving means 16b.

An electromagnetic flush valve (not shown), a faucet drive circuit 20 for driving the flush valve, and a controller 22 are housed in the box I5, and the controller 22 includes the aforementioned sensor 16, touch switch 14, and faucet drive circuit 2o. is connected. The flush valve includes a solenoid connected to the faucet drive circuit 2° and a valve driven by the solenoid, and is interposed in the middle of the water pipe 18 leading to the toilet bowl 17. In this flush valve, the energizing current value of the solenoid corresponds to the valve opening degree, and when the energizing current value of the solenoid is large, the valve opens at a large opening degree and a large amount of flushing water is supplied to the toilet bowl 17 (large flush). , if the energizing current value of the solenoid is small, a small amount of flush water is supplied to the toilet bowl 17 by opening the valve at a small opening (small flush).
. The faucet drive circuit 20 includes a controller 22 and a dog washer 19.
Alternatively, a command signal for a small flush is manually applied, and a large current is applied to the solenoid of the flush valve when a large cleaning command signal is applied manually, and a small current is applied when a small cleaning command signal is applied manually.

The controller 22, as shown in FIG.
Consisting of U23, memory 24, and input/output interface 25, the input/output interface 25 includes the sensor 1 described above.
6, the touch switch 14 and the faucet drive circuit 2o are connected. As will be described in detail later, this controller 22 determines how long a person is in the booth B based on a push button operation by a touch switch 14 or a detection signal from a sensor 16, and performs extensive cleaning based on the length of the person's time in the booth B. A command signal or a small wash command signal is output to the faucet drive circuit 2o, and furthermore, the interval time between large washes is controlled. The above-mentioned controller corresponds to a time limit means, a time change means, and a cleaning command means.

The above-mentioned controller 22 can also distinguish between large and small washes based on the magnitude of the current applied to the solenoid of the flash valve, or distinguish between large and small washes based on the length of the energization time. be.

In the automatic cleaning device of this embodiment, the controller 2
2, the cleaning is controlled by carrying out the processes shown in FIGS. 3 and 4. As shown in FIG. 3, when the power is turned on (step 1), the first timer (equipment protection timer) is activated (step 2). Then, it is determined whether or not the person H is sensed (step 3), and when the person H is sensed, the second timer T2 is started to measure the sensing time (step 4). After this, when the detection of person H disappears (step 5)
If the sensing time is within a predetermined time (on-delay time) of 14, it is assumed to be a false detection and cleaning is performed.If the occupancy time exceeds the predetermined time T, the sensing time is determined. Determine the merits and demerits of (Step P7)
. Then, if the sensing time is less than the predetermined time T1, a small cleaning command signal is output and the second timer T2 is reset (step 8.9).
. Step 10), the sensing time or the predetermined time 12
If the above is the case, a large cleaning command signal is output and the first timer T is
and the second timer T2 (step 14.1
5).

If no person H is detected in step 3, the time counted by the first timer T1 is determined (step 11), and if the time counted by the first timer TI has expired, a large cleaning command signal is output and the first timer T1 (step 12.1)
3)6 On the other hand, in the program in the above flowchart, interrupts are always permitted except for a predetermined time from the output of each cleaning command signal (step 8゜12.14), so the push button of the touch switch 14 is operated. Then, the process shown in the flowchart of FIG. 4 is performed. As shown in this flowchart, when a button is pressed (step 21), it is determined whether or not the person H is detected (step 22).
is detected and if the sensing time is longer than the predetermined time 16 (step 23), a large cleaning command signal is output (step 24),
Also, if the person H is not detected or the sensing time is less than the predetermined time, a small cleaning command signal is output (step 25), and then the original program returns (step 2).
6).

By executing the above-mentioned program, this automatic cleaning device operates as shown in the timing chart of FIG.

In other words, controller 221) N source A is turned on (ON).
Then, the first timer T1 is activated and a predetermined time is set. As shown in the range work in Fig. 5, if the toilet bowl 17 is not used within this predetermined time T1, a large current is applied to the solenoid of the flush valve after the predetermined time T1 has elapsed, and a large flush Cm is performed. , big wash c,,
Upon completion of , the first and second timers are reset.

Further, as shown in the range I+ in FIG. 5, when a person H enters the booth B, the output of the sensor 16 becomes a high potential H while the person H is in the room, and the controller The length of the potential H period determines whether the room is to be used for large or small purposes, and the predetermined pulse width T, which the delay timer outputs, is compared with (G) to determine whether the room is entered for use or not. Then, if the time spent in booth B, that is, the high potential period of the output of sensor 16 is less than the predetermined period T2 and longer than the output pulse width of the delay timer, it is determined that the time of leaving booth B or the push button is reached. During operation, a small current is applied to the solenoid of the flash valve to perform a small cleaning CI, and when the small cleaning C is performed, a predetermined time T0 is subtracted from the remaining time of the first timer T1.Therefore, the main cleaning C11
is carried out at shorter intervals than in the case of range I described above. In other words, if the time spent in booth B is short and it is determined that the space is being used sparingly, a small wash C5 is performed to save water, but each time a small wash C is performed, the interval time between large washes C1 is reduced. Shorten the length to prevent cleanliness from being compromised due to misjudgment.

Furthermore, if the aforementioned predetermined time T expires while in booth B, as shown in range H1 in FIG.
Regardless of the length of the stay, the timer is reset by performing a deep cleaning C1 when leaving the booth B or pressing a button. Therefore, there is no need to perform large washing C□ and small washing C5 at the same time, and water can be saved. Furthermore, if you stay in booth B for more than the predetermined time T2 and leave before the first timer completes, or if you press the button, you will not be able to leave or leave the booth as shown in range ■ in Figure 5. When the button is pressed, a large cleaning C is performed and the first timer is reset. Therefore, the large cleaning C1 is not performed again, and water can be saved.

In addition, the prohibition timer G in FIG. 5 outputs a signal with a predetermined pulse width in synchronization with the operation C11l, C of the flash valve, and prohibits the operation of the flash valve in the intercostal space corresponding to this pulse width. In addition, in this embodiment, when the small cleaning C3 is performed, the first timer starts counting the predetermined time T from the remaining time. Although the remaining time is subtracted, for example, the remaining time may be expressed as a percentage (division may also be performed).

Further, although the timer D is reset when a large cleaning is performed, it may be multiplied or added.

(Effects of the Invention) As explained above, in the two-position toilet bowl cleaning system according to the present invention, the toilet bowl can be flushed at predetermined intervals, or if a small flush is performed, the toilet bowl can be flushed according to the number of small flushes. By shortening the interval between cleaning, water can be conserved without sacrificing cleanliness.

[Brief Description of the Drawings] Figures 1 to 5 show an automatic flushing device for a toilet according to an embodiment of the present invention, and Figure 1 is a schematic side view of a toilet, and Figure 2 is a schematic side view of a toilet.
3 and 4 are flow charts, and FIG. 5 is a timing chart. 14...Touch switch 16...Sensor 17...Toilet bowl 22...Controller (time limit means, time change means, cleaning command means) Fig. 2 Fig. 3 Fig. 4

Claims (2)

[Claims] (1) In an automatic toilet flushing device that can select between a large flush and a small flush depending on the length of time required for defecation, there is a timer for setting a predetermined time at startup, and a timer for setting the remaining time to zero. The present invention further comprises: a cleaning command means for giving a cleaning command when a cleaning is performed and setting the time limit means to an initial value; and a time resetting means for forcibly decreasing the remaining time of the time limit means when a small wash is selected. Features: Automatic toilet cleaning device. (2) The automatic toilet flushing device according to item 1, wherein the timer is set to an initial value when large flushing is selected.