JPH03128019A - Toilet seat equipped with deodorizing device - Google Patents

Abstract

PURPOSE:To operate a deodorizing device for a prescribed time independently of the duration of a toilet seat using time by operating the deodorizing device when a human body detection output signal is generated, and operating the deodorizing device for a prescribed time by the output signal of a monostable multivibrator even after the above-described signal disappears. CONSTITUTION:Detecting the presence of a person using a toilet seat 21, a human body detection part 3 outputs a detection signal into a control part 4. A deodorizing device 1 is turned-ON/OFF by the output signal 6 supplied from the control part 4, and odor is sucked from a suction port 11a installed on a case 11 by a fan 13, and the deodorized air is discharged from a blow-out port 11b. When a starting-down signal (in the case when the user stands up from the toilet seat 21 or is outside a detection range) of the output signal of the human body detection part 3 is received, an output is for a prescribed time T transmitted into a multivibrator IC1, and the deodorizing device 1 is operated for the time T.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a toilet seat equipped with a deodorizing device, and particularly to a means for optimally controlling the operating time of the deodorizing device regardless of the length of use.

(Prior art) Conventional toilet seats used to remove bad odors from inside the toilet bowl used a fan to forcefully exhaust the bad odors and adsorbed them to a deodorizing agent such as activated carbon, but this method had a weak deodorizing effect and Since there are drawbacks such as the need for time and effort to change and replenish deodorizers, toilet seats are equipped with ozone generators that are effective in deodorizing and sterilizing flush water and can be used semi-permanently to decompose odor molecules with ozone. is proposed.

FIG. 5 shows a schematic longitudinal cross-sectional view of a toilet seat with a deodorizing device of this type disclosed in Japanese Patent Publication No. 60-31719, for example.

In the figure, 2 is a toilet bowl, 21 is a toilet seat, and 7 is a low tank. The deodorizing device 1 includes an ozone generator 12 housed in a case 11 having a suction D 11 a and an outlet flb, a fan 13 driven by a motor 13 a, and the like.

Now, when a user sits on the toilet seat 21, a human body detection switch (not shown) is turned on due to the user's weight, and the ozone generator 1 is turned on.
2 is operated during that time, and when the user leaves the toilet seat, the switch is turned off and the operation is stopped.

However, if the ozone generator 12 is stopped immediately after use, deodorization may not be completed and odor may remain. An improvement proposal has been made in which the deodorizing device 1 is operated for a certain period of time after receiving an on signal from a human body detection sensor such as a type or infrared cutoff type or a switch activated by the opening and closing of a toilet door.

[Problem to be solved by the invention]

However, as is well known, the amount of time people use the toilet varies greatly from person to person, with some people using the toilet longer and others shorter.
When the timer is set for a long time, electricity costs are wasted for those who use the timer for a short time, and if high concentration of ozone remains, it is harmful to the human body.

On the other hand, if the timer is set too short, people who use the timer for a long time may not have enough time, resulting in incomplete deodorization.
With the timer method, it is virtually difficult to set the optimal time in all cases.

This invention was made in view of the conventional problems as described above, and its purpose is to provide a means for operating a deodorizing device for a predetermined period of time after the user is no longer present, regardless of the length of time the toilet seat has been used. It is said that

[Means to solve the problem]

Therefore, in the present invention, a human body detection means for detecting the presence of a user is provided in the deodorizing area of the deodorizing means having an ozone generator provided at the rear of the toilet seat, and this human body detection output signal is provided. The above object is achieved by providing a control means configured to operate the deodorizing means when the deodorizing means is activated, and to operate the deodorizing means for a predetermined period of time using the output signal of the monostable multivibrator even after this signal disappears. .

[Effect]

With the above configuration, the deodorizing means is activated for a predetermined period of time after there is no longer a human body in the deodorizing area, regardless of the length of the toilet seat time due to individual differences, resulting in wasted electricity costs and a state where deodorization is not yet determined. Fear disappears.

〔Example〕

The present invention will be explained below based on examples. FIG. 2 shows a schematic plan view of the construction of an embodiment of a toilet seat with a deodorizing device according to the present invention, and the same (equivalent) components as in FIG. 5 of the conventional example are designated by the same reference numerals. In other words, 1 is toilet bowl 2
This deodorizing device is installed inside the case 11 at the rear of the upper toilet seat 21, and is turned on/off by an output signal 6 from the control unit 4, which will be described later. Odor is inhaled through the port 11a, and deodorized air is discharged through the outlet flb.

Sulfur S and nitrogen N molecules with a certain structure in the odor molecules inhaled from the suction port 11a are
Ozone 0 converted from oxygen 02 by the discharge of 12a
3, it is decomposed and deodorized.

Further, 14 is a catalyst disposed immediately before the air outlet ttb, which has the function of decomposing unreacted ozone and adsorbing remaining odor on the surface to complete the reaction with ozone.

Reference numeral 3 denotes a human body detection unit, which has a sensor for detecting the presence of a person using the toilet seat 21, and can be of various types, such as an infrared blocking type or a reflective type, in addition to the weight detection type described above. When the presence of a human body is detected, a detection signal is output to the control section 4, which will be described later.

In addition, in the figure, 22 indicates a toilet seat lid having a hinge 22a.

Next, FIG. 1 shows a block diagram of the configuration of the control section of the deodorizing device 1 in this embodiment. The control unit 4 includes a monostable multivibrator (relaxation oscillator) ICI whose sensor input is the human body detection output signal from the human body detection unit 3 and a logic circuit I.
It consists of C2.

(Control Operation) FIG. 3(a) shows an example of a circuit diagram of the control section 4. 5 is
Sensor human power section and IC that input the output signal of the human body detection section 3
I is a monostable multivibrator, and the pulse width of its output is determined by the values of resistor R1 and capacitor CI, as is well known.

IC2 is a logical OR circuit.

FIG. 4(a) shows a timing chart of each signal at this time. Upon receiving the falling signal (1) of the output signal from the sensor human power section 5 or the human body detection section 3 (when the user stands up from the toilet seat 21 or when the user leaves the detection range), the multivibrator ICI , outputs a "high" pulse (2) for a predetermined time T. The control unit output 6 is a combination of the human body detection output and the multivibrator IC2 output by the OR circuit IC2, and the resulting output 6 causes the deodorizing device 1 to operate by T (=T+ +70) shown in (3). It turns out.

(Other Examples) If the output from the human body detection unit 3 is a signal with a waveform as shown in (1) of FIG. 4(b), for example, the output from the human body detection unit 3 is as shown in FIG. 3(b). As in, logic circuit IC
If 2 is a NAND circuit, the multivibrator ICI
outputs a “low” pulse for a predetermined time T0 in response to the rise of the human body detection output, and the control output 6 is the same as the human body detection output (1) and the multivibrator IC2 output (2).
) are synthesized in the NADA circuit IC2, and the deodorizing device 1 is operated for exactly the same time T as in (3) of FIG. 4(a).

Further, when the output (1) from the human body detection unit 3 and the output (2) from the multivibrator ICI are waveform signals shown in (1) and (2) in FIG. 4 (C) and (b), respectively In this case, if the logic circuit IC2 is made into an exclusive non-logic circuit as shown in FIGS. 3(C) and (d), then (3) in FIG. 4(a) is obtained by the same operation as above. A similar constant operating time T of the deodorizing device 3 can be obtained.

(Function) With the above-described control operation, when the user sits on the toilet seat 21, the deodorizing device 1 is activated by the human body detection signal output, and the usage time T+? & The predetermined time T continues even after the user stands up and the human body detection signal stops. The operation will continue until it stops.

Therefore, the optimal operating time of the deodorizing device is independent of individual differences in the user, and at the same time, even if the user is temporarily out of the detection range of the human body detection unit 3, such as when the user temporarily stands up, the deodorizing device 1 To continue operating without interruption,
This also has the side effect of reducing the number of times the device 1 is turned on and off, thereby improving device life.

(Effects of the Invention) As explained above, in this invention, the human body detection means and the monostable multivibrator are used to operate the toilet seat for a predetermined period of time after use, regardless of the length of time the toilet seat is used. , it is possible to reliably deodorize within an optimal time range, and to avoid waste caused by excessively long operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of a control section of a deodorizing device according to the present invention, FIG. 2 is a schematic plan view of the configuration of an embodiment of a toilet seat with a deodorizing device equipped with this control section, and FIG. 3(a) ~(d) are respective circuit examples of the control section, and FIGS. 4(a)~(d)
) are signal timing charts corresponding to FIGS. 3(a) to 3(d), respectively, and FIG. 5 is a schematic longitudinal sectional view of an example of a conventional toilet seat with a deodorizing device. i ---- Deodorizing device 3 ------- Human body detection unit 4 ------- Control unit 12 - Ozone generator 21 ---- Toilet seat I C1 -...・Monostable multivibrator To・
・・・・・・Predetermined operation time

Claims (1)

[Claims] A human body detection means for detecting the presence of a user is provided in a deodorizing area of the deodorizing means using the ozone generating means provided at the rear of the toilet seat, and when this human body detection output signal is given, the deodorizing means is activated and A toilet seat with a deodorizing device, characterized in that the toilet seat is equipped with a deodorizing device, comprising a control means configured to operate the deodorizing device for a predetermined period of time by the output signal of the monostable multivibrator even after this signal disappears.