JP2671050B2 - Automatic toilet bowl cleaning device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic toilet bowl cleaning device.

(Prior Art) Conventionally known as an automatic toilet cleaning device has both the functions of pre-cleaning for cleaning the toilet before use and main cleaning for cleaning the toilet after use. However, such a cleaning action is performed based on the human body detection by the human body detection sensor that exceeds a predetermined fixed time.

In order to save water, it is proposed that such an automatic cleaning device can perform only main cleaning without preliminary cleaning by switching a switch or setting a timer for preliminary cleaning time to zero. .

(Problems to be Solved by the Invention) In the conventional automatic toilet cleaning device as described above, the same fixed time is used when both the main cleaning and the preliminary cleaning are performed, and when only the main cleaning is performed. For example, if the fixed time is set to be long, even if the human body detection sensor detects a human body when both the main cleaning and the preliminary cleaning are performed, the preliminary cleaning is not easily performed, and the preliminary cleaning starts during or after the toilet. In this case, the role of pre-cleaning cannot be fulfilled, and if the fixed time is set to a short time, it is convenient because both pre-cleaning and pre-cleaning will start immediately if pre-cleaning is performed. Had a drawback that it was against the water saving because it washes even when it just passed in front of the toilet bowl.

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

(Operation) In the toilet bowl automatic cleaning device of the present invention, when both pre-cleaning and main cleaning are performed, pre-cleaning can be performed immediately after human detection by shortening the settling time, and only main cleaning is performed. In the case of performing the cleaning, it is possible to prevent the cleaning from being performed by detecting the human body in a short time such as a simple passage by increasing the fixed time.

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

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

Next, the control by the control unit 4 will be described based on the flowchart shown in FIG.

First, the case of performing both the preliminary cleaning and the main cleaning will be described. First, from START, the process proceeds to step S1 and the flags (the detection flag and the confirmation flag described below) are reset. Next, in step S2, the preliminary cleaning set is determined,
Since there is a preliminary cleaning set, the process proceeds to step S3. In step S3, a fixed time K is set, and in this case K = S
(For example, about 2 seconds in a short time). Next, step S4
The presence or absence of human body detection by the human body detection sensor 2 is determined by
If no, the process proceeds to step S15, and it is determined whether the confirmation flag is set. Since the confirmation flag is not set here, the process proceeds to step S18, the timer is reset, the detection flag is reset to 0 in step S19, and the process returns to step S2 again. (In this case, the timer and the detection flag are originally in the reset state.) Therefore, if the human body detection sensor 2 does not detect the user H, nothing is operated and no cleaning is performed. On the other hand, when the human body sensor 2 detects the user H in step S4, the process proceeds to step S5, and it is determined whether the detection flag is set. Since the detection flag has not been set at this point, the process proceeds to step S13, where the detection flag = 1 is set. Next, the process proceeds to step S14, the timer is started, and the process returns to step S2 again. When the process goes from step S2 to step S3 again and from step S4 to step S5, the detection flag = 1 is set this time, so the process proceeds to step S6. In step S6, the timer time T and the fixed time K (= S) are compared. When T <K, the flow returns to step S2 again. When T ≧ K, the flow advances to step S7 to determine whether the fixed flag is set. To be judged. Since the confirmation flag is not set at this point, the timer is reset in step S8, and the determination flag = 1 is set in step S9. Next, in step S10, a preliminary cleaning set is determined. In this case, since preliminary cleaning is present, the process proceeds to step S11, and preliminary cleaning is performed. At this stage, since the confirmation flag is set in step S8, the process directly returns from step S7 to step S2.

Next, after the urination, when the user H leaves the urinal B and the human body detection by the detection sensor 2 disappears, the process proceeds from step S4 to step S15. As described above, since the determination flag = 1 at this point, the cleaning is performed in step S16, the determination flag = 0 is set in step S17, and the step S18 is performed.
In step S19, the timer is reset, and in step S19, the detection flag = 0. Next, the process returns to step S2, but there is no detection by the detection sensor 2 and the confirmation flag is set to 0. Therefore, the process proceeds from step S4 to step S15 to steps S18 and S19, and no cleaning is performed.

Next, the case of performing only the main cleaning will be described. In this case, the process proceeds from step S2 to step S12, and the fixed time K
= L (for a 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 S18 and further to step S19 as before, and the cleaning is not performed. If there is detection by the detection sensor 2, steps S5 to S1
Go to step 3, and go to step S14 to start the timer. When T ≧ K in step S6, the timer is reset in step S8, and the confirmation flag = 1 is set in step S9. Further, since the preliminary cleaning is not performed here, the process directly returns from step S10 to step S2. Next, when the detection by the detection sensor 2 disappears, it is determined that the user H has left the urinal B and left, and the steps S4 to S1 are performed.
The routine proceeds from step 5 to step S16, where the main cleaning is performed.

As described above, in the automatic cleaning device 1 of the present embodiment, when both the preliminary cleaning and the main cleaning are performed, the preparatory cleaning is performed by the user H by setting the fixed time K = S in step S3 to be short.
Can be made to stand immediately in front of the urinal B and detected immediately by the detection sensor 2, and flush water can be made to flow in the urinal B before the urine is made to sufficiently fulfill the role of preliminary cleaning. it can. On the other hand, in the case of performing only the main cleaning, by setting the confirmation time K = L in step S12 to be long, the confirmation time cannot be reached by the user H simply passing in front of the urinal B. The purpose of saving water can be achieved by flowing the washing water only when urine is made in B.

(Effects of the Invention) In the toilet bowl automatic cleaning apparatus of the present invention, when both the pre-cleaning and the main cleaning are performed, the pre-cleaning starts immediately by setting a short fixed time, so that the user performs the toilet. The preliminary cleaning can be surely performed before, and the original purpose of the preliminary cleaning can be sufficiently achieved. Further, when only the main cleaning is performed, the fixed time is set to be long, so that the main cleaning can be prevented from being performed by a short time detection such as when a person simply passes in front of the toilet bowl. , It has an advantage that it can sufficiently fulfill the purpose of saving water.

[Brief description of the drawings]

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

Claims (1)

(57) [Claims] 1. An automatic toilet cleaning device for a toilet, wherein both preliminary cleaning and main cleaning or only main cleaning can be performed based on human body detection exceeding a predetermined confirmation time by a human body detection sensor. An automatic cleaning device for a toilet, which is configured to be variable depending on whether to perform both main cleaning and main cleaning.