JPH03212525A - Automatic flushing device of closet - Google Patents

Abstract

PURPOSE:To enhance the effect of saving water by providing such a constitution as changing the definite time of a device conducting preliminary flushing and main flushing on the basis of human body detection between the case of both preliminary flushing and main flushing and the case of only main flushing. CONSTITUTION:An automatic flushing device 1 capable of both preliminary flushing and main flushing or only main flushing on the basis of the human body detection exceeding a determined definite time by a human body sensor 2 is provided. The definite time is set short when both preliminary flushing and main flushing are carried out and long when only main flushing is carried out. In the case of preliminary flushing, water is immediately supplied when a user H stands in front of an urinal B, and in the case of only main flushing, water is supplied after urination. Saving water thus can be realized.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automatic toilet cleaning device.

(Prior Art) Conventionally, automatic toilet flushing devices have been known that have both a preliminary cleaning function for cleaning the toilet bowl before use, and a main cleaning function for cleaning the toilet bowl after use. Such a cleaning action is performed based on detection of a human body for a period exceeding a predetermined fixed time by a human body detection sensor.

Furthermore, in order to conserve water, automatic cleaning devices have been proposed that can perform only main cleaning without preliminary cleaning by switching a switch or setting a pre-cleaning timer to 0. .

(Problem to be solved by the invention) By the way, in the conventional automatic toilet flushing device as described above,
The same determination time is used when performing both main cleaning and preliminary cleaning, and when performing only main cleaning. For example, if you set a longer determination time, human body detection will occur when performing both main cleaning and preliminary cleaning. Even if the sensor detects a human body, the pre-washing is not carried out easily, and the pre-washing starts during or after using the toilet, making it impossible to fulfill its role as a pre-washing.Also, if the confirmation time is set too short, the main washing will not be performed properly. It is convenient if you perform both pre-washing and pre-washing because the pre-washing starts immediately, but if you only perform main washing, you will be washing even when you just pass in front of the toilet.
This had the disadvantage of being contrary to water conservation.

(Means for Solving the Problems) In order to solve the above problems, the automatic toilet cleaning device of the present invention performs both preliminary cleaning and main cleaning or main cleaning based on the detection of a human body exceeding a predetermined fixed time by a human body detection sensor. In an automatic toilet flushing device that can perform only
The determined time can be configured to be variable depending on whether both preliminary cleaning and main cleaning are performed or only main cleaning is performed.

(Function) In the automatic toilet cleaning device of the present invention, when performing both preliminary cleaning and main cleaning, by shortening the determination time, preliminary cleaning can be performed immediately after a human body is detected, and only main cleaning can be performed. If this is done, by lengthening the determination time, it is possible to prevent cleaning from being performed when a human body is detected for a short period of time, such as when a person simply passes by.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

The automatic cleaning device 1 shown in the block diagram in Fig. 1 is a urinal B.
A human body detection sensor 2 such as an infrared diffuse reflection type or ultrasonic type that detects when a user H is located in front of the urinal B, and a detection from the detection sensor 2. It has a control section 4 that controls a drive section 3 of a solenoid valve SQL provided in a water supply pipe P to the urinal B based on a signal. A power supply section 5 is connected to the control section 4, and a changeover switch 6 is provided which can be switched between performing both preliminary cleaning and main cleaning and performing only main cleaning.

Next, control by the control section 4 will be explained based on the flowchart shown in FIG.

First, the case where both preliminary cleaning and main cleaning are performed will be described. First, the process proceeds from 5TART to step S1, where flags (detection flag and confirmation flag to be described later) are reset. Next, in step S2, a pre-cleaning set is determined, and since there is a pre-cleaning set, the process advances to step S3. In step S3, a definite time K is set, and in this case, it can be set as =S (a short time, for example, about 2 seconds). Next, in step S4, it is determined whether or not the human body detection sensor 2 has detected a human body, and if there is no human body detection, the process proceeds to step 515, where it is determined whether or not a confirmation flag is set. Since the confirmation flag is not set here, the process proceeds to step 31B, the timer is reset, and the detection flag is set to 0 in step S19.
is reset and returns to step S2 again. (In this case, the timer and detection flag are originally in a reset state.) Therefore, if the human body detection sensor 2 does not detect the user H, nothing operates and cleaning is not performed. On the other hand, if the human body sensor 2 detects the user H in step S4, the process advances to step S5, and it is determined whether the detection flag is set. At this point, the detection flag is not set yet, so step S13
Then, the detection flag is set to 1. Next, the process advances to step S14, a timer starts, and the process returns to step S2 again. From step S2 again to step S3.
When the process goes from step S4 to step S5, the detection flag is set to -1, so the process goes to step S6. In step S6, the timer time T and confirmed time K (-3) are compared, and if T<K, the process returns to step S2, and if T≧, the process proceeds to step S7, where it is determined whether the confirmed flag is set or not. I can judge. Since the confirmation flag is not set at this point, the timer is reset in step S8, and the confirmation flag is set to -1 in step S9.

Next, in step S10, a pre-cleaning set is determined, and in this case, since pre-cleaning is present, the process proceeds to step Sll, where pre-cleaning is performed. At this stage, since the confirmation flag is set in step S8, the process returns directly from step S7 to step S2.

Next, after the user H leaves the urinal B and the detection sensor 2 no longer detects a human body, the process proceeds from step S4 to step S15. As mentioned earlier, at this point, the confirmation flag = 1, so cleaning is performed in step S16, the confirmation flag = 0 in step S17, the timer is reset in step 518, and then the process proceeds to step S.
At step 19, the detection flag is set to O. Next, the process returns to step S2, but since there is no detection by the detection sensor 2 and the determination flag is set to 0, the process proceeds from step S4 to step S15 to step 31B and step S19, and no cleaning is performed.

Next, the case where only the main cleaning is performed will be explained. In this case, the process proceeds from step S2 to step 312, and the determined time can be set to =L (long time, for example, 5 to 10 seconds).

Next, the process proceeds to step S4, but if there is no detection by the detection sensor 2, the process proceeds from step S15 to step S as before.
18 The process then proceeds to step 819, where no cleaning is performed.

If there is a detection by the detection sensor 2, the process proceeds from step S5 to step S13, and further proceeds to step S14, where a timer is started. When T≧K in step S6, the timer is reset in step S8, and the determination flag is set to 1 in step S9. Further, since no preliminary cleaning is performed here, the process returns directly from step SIO to step S2. Next, when the detection sensor 2 no longer detects the detection, it is determined that the user H has left the urinal B, and the process proceeds from step S4 to step S15 to step 31.
Proceeding to step 6, main cleaning is performed.

As described above, in the automatic cleaning device 1 of this embodiment, when performing both preliminary cleaning and main cleaning, by setting =S short in the determination time of step S3, the preliminary cleaning can be performed by the user H.
The user can stand in front of the urinal B and urinate as soon as it is detected by the detection sensor 2, and before urinating, flushing water can be flowed into the urinal B to fully fulfill the role of preliminary cleaning. can. On the other hand, if only the main cleaning is to be performed, by setting =L long for the determined time in step 312, the determined time will not be reached if the user H simply passes in front of the urinal B, and the urinal The purpose of saving water can be achieved by flushing water only when urine is urinated in B.

(Effects of the Invention) In the automatic toilet bowl cleaning device of the present invention, when performing both preliminary cleaning and main cleaning, the preliminary cleaning starts immediately by setting a short fixed time, so that the user can use the toilet without having to use the toilet. Preliminary cleaning can be reliably performed before the cleaning, and the original purpose of preliminary cleaning can be fully fulfilled. Also, if only the main flush is to be performed, by setting a long confirmation time, it is possible to prevent the main flush from being performed if a short period of time, such as when a person simply passes in front of the toilet bowl, is detected. , has the advantage of being able to fully fulfill the purpose of water conservation.

[Brief explanation of drawings]

The figures show one embodiment of the present invention. Fig. 1 is a block diagram showing an automatic urinal cleaning device together with a user and a urinal, and Fig. 2 is a control section of the automatic urinal cleaning device shown in Fig. 1. It is a figure which shows the flowchart of control by. 1 Automatic cleaning device 2 Detection sensor 6 Changeover switch H User B Urinal funeral diagram 1 Automatic cleaning device 2 Detection sensor 6 Changeover switch H User B・・Urinal table diagram

Claims (1)

[Claims] In an automatic toilet cleaning device that can perform both preliminary cleaning and main cleaning, or only main cleaning, based on human body detection exceeding a predetermined fixed time by a human body detection sensor,
An automatic toilet bowl cleaning device characterized in that the determined time is configured to be variable between when performing both preliminary cleaning and main cleaning and when performing only main cleaning.