JPS6344033A - Water saving apparatus of flash toilet - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] purpose of invention (Industrial application field) The present invention relates to a water saving device for a flush toilet.

(Prior art) Conventionally, in flush toilets, the operation means for operating the water discharging means and discharging flush water into the toilet bowl is left to the user's will, so its use is particularly difficult in women's flush toilets. Regardless of the size of the water, after graduating from university, the first thing to do is to spray water (hereinafter referred to as etiquette cleaning), then to use the water, spray water several times for Otoura (hereinafter referred to as sound-reducing water), and finally. There are many cases where washing water is wasted, such as when water is sprayed for cleaning. Therefore, a water-saving device has been proposed that controls the amount of water discharged by installing a sensor or the like that detects the state of use (squatting, etc.) of the user in the flush toilet.

(Problems to be Solved by the Invention) However, in all of the water-saving devices described above, sensors and the like that detect the user's usage status in the flush toilet require a large installation space, give the user a sense of discomfort, etc. There were problems such as malfunctions due to the difference in height between adults and children.

An object of the present invention is to provide a water-saving device for a flush toilet that can solve the above-mentioned problems and improve water-saving efficiency.

Structure of the Invention (Means for Solving the Problems) Therefore, the present invention includes a water discharging means for discharging flushing water into the toilet bowl, and a water discharging means provided on both sides of the toilet bowl so as to prevent the user from straddling the toilet at a position above the toilet bowl. The present invention is provided with a posture detecting means for detecting whether the user is straddling the user, and a water spraying control means for driving and controlling the water spraying means based on a detection signal obtained by the posture detecting means detecting the straddling state of the user.

(Function) With the above configuration, the posture detection means can be installed on both sides of the flush toilet without taking up a large space, and can detect the state of the user straddling the toilet at a position above the toilet without giving the user a sense of discomfort, and water can be discharged. When the control means determines that the user has started using the apparatus based on the detection signal from the attitude detection means, the control means drives and controls the water spraying means to spray cleaning water based on the determination.

(Example) Hereinafter, a first example in which this invention is embodied in a Japanese-style flush toilet will be described.

In the drawing, reference numeral 1 denotes a flush toilet with a Japanese-style flush toilet 2 provided inside, and is surrounded by walls 3 on all sides. In addition,
A door 5 for opening and closing the entrance 4 is provided on the wall 3a on the near side. Reference numeral 6 denotes a control box installed on the wall 3 at the back left of the flush toilet 1 shown in FIG. 2, and contains various water discharging devices such as a solenoid valve 8 and a water pressure control valve 10, which will be described later.

Reference numeral 7 denotes a water discharge pipe for discharging flush water to the flush toilet 2, and a solenoid valve 8 as a water discharge means for starting and stopping discharge of flush water to the water discharge pipe 7, and a water supply to the solenoid valve 8. Water pressure control valve 1 that controls the water pressure from the water supply pipe 9
0 is set.

Reference numeral 11 denotes a step stool provided on both sides of the flush toilet 2, and a 7-way switch 118 serving as posture detection means is installed inside.
．． 11b is built-in, and when the user places his/her feet on both step stools 11, that is, when the user steps over the flush toilet 2, the built-in foot switches 11a, 11b are turned on by the user's weight, and the CP to write on signal later
It continues to be output to U13. Reference numeral 12 denotes a water discharge switch as an operating means provided in the control box 6, and when operated by the user, a CPL 113 (described later) is activated.
Outputs operation signals to.

Next, the electrical configuration of this water saving device will be explained.

13 is a central processing circuit (hereinafter referred to as CP) as a water discharge control means.
A read-only memory (hereinafter referred to as R) and a read-only memory (hereinafter referred to as R
It operates based on a control program stored in the OM (OM) 14. 15 is a readable and writable memory (
(hereinafter referred to as RAM), which temporarily stores the results of calculations performed by the CPU 13, etc. Reference numeral 16 denotes a timer circuit, which operates to measure the time t based on a control signal from the CPU 13. Reference numeral 17 denotes a drive circuit, which excites and drives the solenoid valve 8 based on a control signal from the CPtJ13.

Now, the operation of the water saving device constructed as above will be explained according to the flowchart shown in FIG.

When the M source is turned on, the CPtJ 13 waits in step 1 for detection signals to be input from the foot switches 11a and 11b. Then, when a user enters the flush toilet 1 and starts using it, and a detection signal is input from both foot switches 11a and 11b by stepping over the flush toilet 2, the CPIJ 13 activates the timer circuit 1 in step 2.
6, start measuring time t. Next, the CPU 13 waits for the water discharge switch 12 to be operated in step 3, and until it is operated, determines whether both foot switches lla and 11b are off in step 4,
If it is not off, go to step 3 again. C.P.
U13 operates both foot switches 11 in step 4.
If it is determined that a and 11b are off, the process from step 1 onwards is repeated again.

CPtJ13 is the water discharge switch 1 in step 3.
2 is turned on, it compares the measured time t of the timer circuit 16 with a predetermined time T (150 seconds in this embodiment) stored in advance in the ROM 14, and if it is determined that t≦K, water is sprayed for small use. It is determined that there is enough water, and in step 6 33 a small control signal is output to the drive circuit 17 to spray a small amount of water (approximately 6 liters in this embodiment), and the processes from step 3 onwards are repeated.

In addition, if it is determined in step 5 that t≦K, it is determined that it is necessary to spray water from the large river, and in step 7, a small control signal is output to the drive circuit 17 to spray a large amount of water (in this example, approximately 12 liters) of water, and step 3
Repeat the following process.

As detailed above, both foot switches 11a.

11b allows the step stool 11 to be installed on both sides of the flush toilet bowl 2 without taking up a large space, without giving the user a sense of discomfort, and without being affected by the user's height, movement, etc. in the position above the toilet bowl. The CPU 13 detects a state in which the user straddles the user, and the CPU 13 causes the timer circuit 16 to measure the usage time t based on the detection signal.
It is possible to correctly determine when a large amount of water is required after the predetermined time T has elapsed, and to efficiently utilize the cleaning water.

Further, both foot switches 11a and 11b can be manufactured from limit switches or the like with a simple structure, and the user will not feel any discomfort.

(Second Embodiment) Next, a description will be given of a second embodiment embodying the present invention, only with respect to the differences from the first embodiment.

In the first embodiment, the CPU 13 turns on the water discharge switch 12 after both foot switches 11a and 11t) are turned on.
The drive circuit 17 is controlled according to the time t measured by the timer circuit 16 until the timer circuit 16 is operated, and a predetermined water spray is performed. However, in this embodiment, the water spray switch 12 is omitted and the predetermined water spray timing is controlled. Let the CPU 13 decide based on its own judgment,
The drive circuit 17 is configured to perform a predetermined water spray.

That is, as shown in FIG.
In step 1, both foot switches 11a and 11b are turned on, and when it is determined that they have been turned on, in step 12, the drive circuit 17 is driven to drive the solenoid valve 8 for a predetermined period of time as an etiquette cleaning. ~4 liters of cleaning water is discharged, and the timer circuit 16 starts measuring operation. Furthermore, the CPU 13 performs step 1
In step 3, it is determined whether the time t is 30 seconds x n (where n is a natural number), and if the above condition is satisfied, in step 14, the solenoid valve 8 is activated for the drive circuit 17 for a predetermined period of time as a sound-muffling water discharge. In this embodiment, about 5 liters of washing water is discharged, and the process returns to step 13 again. That is, a sound-deadening water spray is performed every 30 seconds.

If it is determined in step 13 that the CPU 3 does not meet the above conditions, it is determined in step 15 whether or not both foot switches 118.11b are turned off, and if it is determined that they are still turned on, the process returns to step 13. return.

When cpul 3 determines in step 15 that the user has finished using the foot switches 11a and 11b and that both foot switches 11a and 11b are off, the cpul 3 waits for a predetermined time T (150 seconds as in the previous embodiment) in step 16. ), and if it is determined that t<king, step 1
In step 7, the electromagnetic valve 8 is driven for a predetermined period of time by the drive circuit 17 as a small cleaning, and in this embodiment, about 6 liters of cleaning water is discharged, and the process returns to step 1 again.

If the CPU 13 determines in step 16 that the above conditions are not satisfied, in step 18 it causes the drive circuit 17 to drive the solenoid valve 8 for a predetermined period of time to flush out approximately 12 liters of cleaning water in step 18. Return to step 1 again.

Therefore, in this embodiment, both foot switches 11a and 11 do not depend on the user's operation of the water discharge switch 12.
Based on the detection signal b and the time t measured by the timer circuit 16, etiquette cleaning is performed at the same time as the start of use, and thereafter, sound-deadening water is sprayed every 30 seconds. Furthermore, both foot switches 1
When the time from when 18.11b is turned on to when it is turned off is shorter than the predetermined time T, less wash water for small use is discharged, and conversely, when it is longer, more wash water for large rivers is discharged.

Therefore, it is possible to efficiently perform a water discharging operation that matches the usage pattern of the user.

(Third Embodiment) Next, a third embodiment embodying the present invention will be described only with respect to the differences from the first embodiment.

In this embodiment, the timer circuit 16 is omitted, and the CPU 13 stores in the RAM 15 the number N of operations of the water discharge switch 12 after both foot switches 11a and 11b are turned on, and uses the RAM 15 as a counting means. The drive circuit 17 is configured to perform predetermined water spraying in accordance with N.

That is, as shown in FIG. 6, the CPU 13 waits for both foot switches 11a and 11b to be turned on in step 21, and when it determines that they have been turned on, resets the number of operations N in the RAM 15 to 0 in step 22.

Next, the CPtJ 13 waits for the water discharge switch 12 to be turned on in step 23, and unless it is turned on, the CPtJ 13 waits for both foot switches 11a, 1 in step 24.
1b is turned off, and if it is determined that it is still turned on, the process returns to step 23, and the user finishes using both foot switches 11a.

If it is determined that 11b is turned off, the process returns to step 21.

The CPU 13 switches the water discharge switch 1 in step 23.
2 is turned on, R is turned on in step 25.
1 is added to the number of operations N stored in the AM 15, and it is determined in step 26 whether the number of operations N is 5×n (however, n is an integer), and if it is determined that it is not a multiple of 5, step 27 , the number of operations N is 1
Determine whether or not. When the CPU 13 determines that the number of operations N is 1 in step 27, this is the first operation of the water discharge switch 12 after both foot switches 11a and 11b have been turned on, so the CPU 13 proceeds to step 28 to perform etiquette cleaning. The electromagnetic valve 8 is driven in the circuit 17 for a predetermined period of time to discharge cleaning water. CPtJ13 has the number of operations N in step 27.
If it is determined that is not 1, then in step 29, the drive circuit 17 drives the solenoid valve 8 for a predetermined period of time to discharge a small amount of cleaning water for silent cleaning or small-purpose cleaning.

If the cpul 3 determines in step 26 that the number of operations N is a multiple of 5, in step 30 it causes the drive circuit 17 to drive the solenoid valve 8 for a predetermined period of time to discharge a large amount of washing water. , step 23
Return to

Therefore, in this embodiment, etiquette cleaning, sound-deadening water spraying, small-purpose cleaning, and large-scale cleaning are performed depending on the number of times N of operation of the water discharge switch 12 after the user turns on both foot switches 11a and 11b. Because it is possible to
Washing water from the large river is not unnecessarily discharged, and the necessary minimum amount of water can be discharged efficiently.

Note that the present invention is not limited to the above-mentioned embodiments, and may be modified by changing the predetermined time T, changing the number of operations N,
The present invention may be embodied in a tank-type flush toilet or may be embodied in a Western-style flush toilet. Also, C
Step 4, Step 15, Step 2 for PU13
4, both foot switches 11a and 11b are not both off, but both foot switches 11a.

Any changes may be made without departing from the spirit of the invention, such as by determining that it is off if at least one of 11b is off.

Effects of the Invention As detailed above, in the present invention, the posture detecting means is simply provided on the scaffolding on both sides of the flush toilet, so it does not take up much space, does not give the user a sense of discomfort, and moreover, it is possible to detect the posture of the user at a position above the toilet. The water discharging control means detects the straddling state of the user without being affected by height or motion, and based on the detection signal, the water discharging control means determines an appropriate water discharging operation, so that cleaning water is sprayed onto the water discharging means without wasting water. It has the advantage of being highly effective in industrial applications, as it can be controlled and controlled.

[Brief explanation of the drawing]

1 to 4 show a first embodiment embodying the present invention, FIG. 1 is a block circuit diagram showing water flow control means, etc., FIG. 2 is a plan view of a flush toilet, and FIG. 3 is a Similarly, FIG. 4 is a side view showing the main parts of the flush toilet, FIG. 4 is a flowchart showing the action of the water saving device, FIG. 5 is a flowchart showing the action of the second embodiment, and FIG. 6 is a flowchart showing the action of the third embodiment. It is a flowchart figure shown. Flush toilet 1, flush toilet 2, water discharge means 8, operating means 12,
ROM 14, RAM 15, water spray control means 13, posture detection means 11a, 11b, timer 16° Patent applicant Takamatsu Electric Co., Ltd. Attorney Patent attorney On 1) Hironobu S figure S figure 6

Claims (1)

[Scope of Claims] 1. Water spraying means for discharging flushing water into the toilet bowl; Posture detection means provided on both sides of the toilet bowl and detecting whether or not a user is straddling the toilet bowl; A water saving device for a flush toilet comprising a water discharge control means for driving and controlling a water discharge means based on a detection signal obtained by the posture detection means detecting a state in which the user is straddling the user. 2. The water discharge control means includes an operating means for activating the water discharge means to start discharging flushing water into the toilet bowl, and a timer operation control means for operating a timer based on a detection signal from the posture detection means. A water-saving device for a flush toilet according to claim 1, which comprises: 3. The water spraying control means drives and controls the water spraying means so that when the time measured by the timer when the operating means is operated is short, the amount of water sprayed is decreased, and when the time measured by the timer is long, the amount of water sprayed is increased. Water-saving device for flush toilets as described in section. 4. The water spraying control means is provided with a timer operation control means for measuring and operating a timer based on the detection signal from the attitude detecting means, and drives and controls the water spraying means based on the measured time. Water saving device for flush toilets as described. 5. The water discharge control means includes an operating means for activating the water discharging means to start discharging flushing water into the toilet bowl, and counts the number of times the operating means has been operated after a detection signal is input from the posture detecting means. 2. A water saving device for a flush toilet according to claim 1, comprising a counting means and driving and controlling the water discharging means according to the number of times the water discharging means is counted.