JP3176909B2 - Sanitary washing device misoperation prevention device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a sanitary washing device for injecting warm water into a local part of a human body after a stool and sanitarily cleaning the local part. The present invention relates to a device for preventing erroneous operation of a sanitary washing device in which the washing water is not ejected even if a washing switch for ejecting washing water heated to an appropriate temperature is operated unless the toilet seat is placed on the toilet seat.

[Conventional technology]

In recent years, washing water (hot water) that has heated the local area of erroneous use to an appropriate temperature
There has been a remarkable spread of sanitary washing apparatuses that perform more hygienic and comfortable washing. In the above-mentioned sanitary washing device, for example, as shown in FIGS. 1 and 2, a horizontally long control box 3 is attached to the rear upper surface of a style toilet 2 on which a toilet seat 1 is mounted so that the toilet seat can be turned upside down. 3, a water supply pipe 4 connected to a water supply source (not shown) is provided via a solenoid valve 5 and a heating device 6 for heating the cleaning water to an appropriate temperature. Is mounted so as to be able to advance and retreat at a predetermined angle toward the inside of the toilet 2.

In use, the washing water is heated by a heater 10 attached to a heating device 6 and connected to a commercial power supply 8 via a switching element 9 as shown in FIG. Is detected by a temperature sensor (not shown),
This detection signal is sent to the control device 11, and a gate signal is sent from the control device 11 to the switching element 9 based on the detection signal so as to control the energization, so that the washing water flowing into the heating device 6 can be used. The cleaning water is heated to an appropriate temperature, and the cleaning water is ejected from the local spotting nozzle 7 of the human body to clean the local area of the user in a sanitary manner.

At the time of operating the sanitary washing device, as shown in FIG. 2, an operation case extended at one end of the control box 3 to accommodate the control device 11 and the power supply device 12 (see FIG. 7). Push button type switch S ₁ "wash"
S ₂ "dry" · S ₃ of the "seat", for example, when the switch S _1, which is labeled "washed" to introduce the washing water through the water supply pipe 4 from the water supply source solenoid valve 5 is opened Heating device 6
The washing water is buried in the heating device 6 and is instantaneously heated to a temperature suitable for washing by the heater 10 which is controlled to be energized by a command from the control device 11 and is ejected from the nozzle 7. After washing the private parts, when stopping the jetting of washing water, when interrupting the closing state by pushing the switch S ₁ again, the solenoid valve 5
Closes to stop the flushing of water.

Moreover, by operating the switch S _2, labeled as "dry", and driven hot air machine (not shown), hot air is ejected toward the private parts, to dry the wet by washing local. or,
To warm toilet seat 1, switch S ₃ labeled "Toilet seat"
Is operated to energize a heater (not shown) wired in the toilet seat 1 to warm the surface of the toilet seat 1 to a comfortable temperature suitable for seating.

The power supply device 12 shown in FIG. 7 includes a power transformer 13 having a primary side connected to the commercial power supply 8 and a diode bridge 14 having an AC input terminal connected to the secondary side of the transformer 13.
When, a smoothing capacitor C ₁ connected in parallel to the DC output terminal of the diode bridge 14, voltage regulator AVR, this is constituted by a voltage regulator AVR output end and the smoothing capacitor C ₂ connected between the ground, the commercial power supply A DC constant voltage power supply Vcc that is stepped down and full-wave rectified is supplied to the control device 11 as an operation power supply.

[Problems to be solved by the invention]

However, in the above-mentioned sanitary washing device, when the electromagnetic valve 5 is opened at the time of local cleaning, for example, the electromagnetic valve control device 16 shown in FIG. 8 has been used. The electromagnetic valve controller 16, the relay X and the switch S ₁ which is inserted in series between ground and the constant voltage source Vcc, constituted by the diode D ₁ inserted between the terminals of the relay X, the switch S ₁ When pressed, the relay X was energized, closing its normally open contact Xa (for example, one inserted into the circuit of the solenoid valve 5 in FIG. 7) to open the solenoid valve 5. However, in the structure of the solenoid valve control device 16, for example, when the toilet 2 or the like is being cleaned, or the switch S that is erroneously arranged on the operation casing 3a and is displayed on the operation case 3a is displayed on the operation case 3a. _{When 1} is pressed, the electromagnetic valve 5 is immediately opened, and the washing water heated by the heating device 6 is jetted from the nozzle 7 to wet clothes of a cleaner or the like,
The toilet floor was sometimes flooded.

In order to solve the above problem, for example, a mechanical weight switch and detection sensors are attached to a portion corresponding to the upper surface of the toilet below the toilet seat, and when the user sits on the toilet seat, the seating is detected by the weight of the user. It is possible to sit down using an infrared or ultrasonic sensor attached near the toilet seat. However, in the former case, it is not possible to determine the distinction between the human body and the object, and even if the object is placed on the toilet seat, seating may be detected, or conversely, if the child is light, seating may not be detected reliably. there were. In the latter case, even if a person or an object is brought close to the toilet seat without sitting on the toilet seat, the seat may be erroneously determined to be seated.
Thus, even if attached to the weight switch and a sensor, etc., often determines that incorrectly seated, in this case, a problem that when accidentally turning on the "wash" switch S _1, still cleaning water is ejected from the nozzle And could not be a solution for preventing erroneous operation.

The present invention has been made in view of the above-described problem, and allows a user to turn on a switch labeled “washing” of a sanitary washing device only when a user sits on a toilet seat, thereby opening an electromagnetic valve due to erroneous operation of the switch. Accordingly, it is an object of the present invention to provide an apparatus for preventing an erroneous operation of a sanitary washing apparatus, in which washing water is not spouted and does not wet user's clothes and the floor of a toilet.

[Means for solving the problem]

The present invention connects one winding and a choke coil of a high-frequency transformer to an energizing circuit of a toilet seat warming heater arranged on the inner surface of the toilet seat, and the other winding of the high-frequency transformer includes an oscillation circuit and a resonance coil. To connect the heater side to one electrode and the ground side to the other electrode, and further comprise the high-frequency transformer, a toilet seat heating heater, a choke coil, and a resonance coil to provide an electrostatic capacitance between the electrodes. A sanitary washing device comprising a resonance circuit for detecting a change in capacitance and a comparison circuit for comparing the output of the resonance circuit with a reference value and outputting a predetermined signal; and when the predetermined signal is output from the comparison circuit. Is operably controlled.

Also, the present invention connects one winding of a high frequency transformer and a choke coil to an energizing circuit of a toilet seat warming heater arranged on the inner surface of the toilet seat, and the other winding of the high frequency transformer has an oscillation circuit and a resonance circuit. And the other side is connected to a coil, and the heater side is used as one electrode, and the ground side is used as the other electrode. A resonance circuit that detects a change in capacitance; and a comparison circuit that compares the output of the resonance circuit with a reference value and outputs a predetermined signal. When a predetermined signal is output from the comparison circuit, cleaning is performed. The water discharge valve is controlled to be openable.

(Operation)

In the present invention, the heater in the resonance circuit is formed as one electrode, the other electrode is set to the ground, and when not sitting on the toilet seat, the capacitance between the two electrodes is only the dielectric constant of air. Therefore, the resonance frequency generated in the resonance circuit becomes extremely small, that is, the resonance frequency is greatly different from the oscillation frequency output from the oscillation circuit, so that only a small amount of resonance current flows in the resonance circuit. Since the voltage generated at both ends of the resonance coil is also low, and as a result, an "L" level signal is output from the output terminal of the comparison circuit, the transistor is kept off and does not excite the solenoid valve control relay. Therefore, even if the "washing" switch is turned on in this state, the solenoid valve is not opened and remains closed, so that the washing water is not discharged.

On the other hand, when the toilet user is seated, the capacitance between the electrodes rapidly increases, whereby the resonance frequency determined by the capacitance between the electrodes and the resonance coil becomes the oscillation frequency output from the oscillation circuit. When they match or approach each other, a large resonance current flows through the resonance circuit, whereby the output from the comparison circuit changes from “L” level to “H” level. In this state, the sanitary washing device is activated, for example, when the "wash" switch is turned on, the switch operation circuit, that is, the solenoid valve control device is operated, and the washing water heated to an appropriate temperature is ejected from the nozzle and the local washing is performed. It is designed to perform washing, and this allows the user to mistakenly "wash" when not sitting on the toilet seat or when simply placing an object on the toilet seat.
The present invention is characterized in that the solenoid valve control device does not malfunction even if the switch indicated as "" is turned on.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 2 to 5, the same reference numerals as those in FIGS. 1, 7 and 8 denote the same parts.

FIG. 5 shows an electric circuit diagram of the solenoid valve control device 20 used in the device for preventing malfunction of the sanitary washing device of the present invention. The solenoid valve control device 20 is roughly divided into the same constant voltage power supply Vcc as before. A power supply circuit 12, an oscillation circuit 21, a resonance circuit 22, a detection and smoothing circuit 23, a reference voltage setting circuit 24, a comparison circuit 25, a water discharge command circuit 26, and a switch operation circuit 27 are provided. I have.

Next, the configuration of each circuit will be described. The power supply circuit 12 comprises a commercial power supply 18, a solenoid valve 5, a normally open contact Ya of a relay Y provided in the solenoid valve control circuit 20, a washing water heating heater 10 attached to the heating device 6, and command signals from the control device 11. A switching element 9 for controlling energization of the heater 10 by the
The primary side of the power supply transformer 13 is connected in parallel with each other, and the secondary side of the power supply transformer 13 is connected to the controller 11 and each circuit of the solenoid valve control circuit 20 and the toilet seat temperature control device 28, which will be described later. It is configured with the same output terminal as before to supply the constant voltage power supply Vcc.

Oscillator circuit 21, a sine wave of high-frequency signal from the output terminal supplied with a constant voltage source Vcc (for example, 500KH _z) and the resonant circuit 22 and described below, will be described later reference voltage setting circuit 24
At a certain frequency.

Next, the resonance circuit 22 includes a high-frequency transformer 29 (hereinafter, referred to as a high-frequency transformer), a toilet seat heating heater 30 attached to the inner surface of the toilet seat 1, a choke coil 31, and a resonance coil 32.
The primary side of the high-frequency transformer 29 is connected on one side to the output terminal of the oscillation circuit 21, the other side is grounded via a resonance coil 32, and the secondary side is used for keeping the toilet seat warm. A heater (hereinafter simply referred to as a toilet seat heater) 30;
By connecting a switching element 33 and a choke coil 31 that are energized and controlled by a command signal from the toilet seat temperature control device 28 in series with the commercial power supply 18 to form a resonance circuit 22, the resonance circuit 22 The choke coil 31 inserted and connected to the secondary side of the high-frequency transformer 29 has a low impedance with respect to a low-frequency power supply such as the commercial power supply 18, and has a high impedance with respect to a high-frequency signal output from the oscillation circuit 21. Is used. Therefore, the toilet seat heater 30 does not cause any trouble when energized from the commercial power supply 18 due to the presence of the choke coil 31, but is insulated from the high-frequency signal and the high-frequency signal is supplied to the heater 30. In order to prevent looping in the circuit, that is, the heater 30 is configured such that the energizing circuit thereof is not closed by the choke coil 31 for a high-frequency signal. A and none
On the ground side, for example, the floor surface 40 of the toilet can be used as the other electrode B. The high frequency signal output from the oscillation circuit 21 always flows through the resonance coil 32 connected to the primary side of the high frequency transformer 29, but when the capacitance between the electrodes A and B is small (toilet seat) 1), the oscillation frequency of the oscillation circuit 21 greatly deviates from the resonance frequency of the resonance circuit 22, so that the voltage generated at both ends of the resonance coil 32 is low. Therefore, the oscillation circuit
The oscillation frequency output from 21 is different from the resonance frequency of the resonance circuit 22 determined by the capacitance C between the electrodes A and B and the inductance L of the resonance coil 32 due to the presence of the human body between the electrodes A and B. By selecting the constants so as to match, when the toilet seat 1 is seated, the resonance current flowing through the resonance circuit 22 becomes maximum, thereby increasing (maximizing) the voltage generated at both ends of the resonance coil 32. It becomes possible.

Detection and smoothing circuit 23, detection diode the anode of D ₂ is connected to a connection point of the primary side of the high-frequency transformer 29 and the resonance coil 32, the cathode resistance R ₁ connected in parallel with said resonance coil 32
And it is configured to connect to the capacitor C _3, the resonant circuit
As well as half-wave rectification by the detection diode D ₂ resonance current (AC output) flowing to 22, smoothed by the CR time constant set by the resistor R ₁ and capacitor C ₃ and outputs a DC output (Vt) with.

Reference voltage setting circuit 24, an oscillation circuit 21 output and the current detection resistor R ₂ to be inserted and connected between the ground to detect the AC output from the oscillation circuit 21, the detection diode the anode of the oscillation circuit of the D ₃ 21 parallel connected with the current detection resistor R ₂ to the output terminal, the cathode is configured to connect to the resistor R ₃ and capacitor C _4, to detect the AC output from the oscillation circuit 21 by the current detection resistor R _2, wherein as well as half-wave rectified by a resistor R current detecting diode D ₃ that occurs at both ends of the _2, and outputs the set output (reference voltage) Vs by CR time constant by the resistor R ₃ and capacitor C _4.

The comparison circuit 25 includes a comparator CP having an open collector output, and a reference voltage setting circuit 24 is provided at its inverting input terminal.
Is the output terminal connected also to the non-inverting input terminal connected to the output terminal of the detection and smoothing circuit 23, further, by connecting the output terminal of the comparator CP via the resistor R ₄ to the constant voltage source Vcc This comparator CP is a reference voltage input to the inverting input terminal.
Vs and the output of the detection and smoothing circuit 23 input to the non-inverting input terminal
When Vs <Vt, an "H" level signal is output from the output terminal, and when Vs≥Vt, an "L" level signal is output.

In addition, when the reference voltage Vs input to the comparator CP is not seated on the toilet seat 1, the output voltage from the detection / smoothing circuit 23 is lower than a certain level. Since they are output, they are set at an intermediate level value between these two voltages.

The water discharge command circuit 26 is provided between the constant voltage power supply Vcc and one input terminal of the AND element 34 of the switch operation circuit 27 described later.
A resistor R ₅ and the "wash" switch S ₁ constructed by inserting in series, when turning the switch S _1, and sends the "H" level signal from its output to the AND element 34.

The switch operation circuit 27 described above is connected to the output terminal of the comparison circuit 25 to one input terminal of the AND element 34, and to the output terminal of the water discharge command circuit 26 to the other input terminal.
The output end of 34 via a resistor R ₆ is grounded and the base of the transistor Q of the emitter grounded and between the base resistor R ₆ and the transistor Q and the ground a resistor R _7, also the collector and the constant voltage of the transistor Q together between the power supply Vcc to insert the relay Y in series, and constituted by connecting a diode D ₄ between the relay Y terminals, "H" level signal from the output terminal of the aND element 34 is output At this time, the transistor Q is turned on to excite the relay Y.

 Next, the operation will be described.

(1) When not sitting on the toilet seat 1 When the user does not sit on the toilet seat 1, the capacitance between the electrodes A and B is extremely small, and the toilet seat heater 30
In the energizing circuit, the presence of the choke coil 31 has a high impedance with respect to a high-frequency signal of a constant cycle output from the oscillating circuit 21. Therefore, the output from the oscillating circuit 21 Not flowing. However, since the choke coil 31 has a low impedance with respect to the commercial power supply 18, the energization from the power supply 18 can be received without any trouble and the toilet seat 1 can be kept at an appropriate temperature. At this time, a high-frequency transformer 29 is interposed between the energizing circuit (strong electric power) of the toilet seat heater 30 and the weak electric circuits such as the reference constant voltage setting circuit 24 and the detection / smoothing circuit 23.
The high-frequency transformer 29 serves to insulate the current-carrying circuit of the toilet seat heater 30 from the weak electric circuit, and protects the weak electric circuit from the commercial power supply 18. Since the human body is not seated on the toilet seat 1 between the electrodes A and B of the resonance circuit 22, the resonance frequency determined by the capacitance C between the electrodes A and B and the inductance L of the resonance coil 32, and the oscillation circuit 21 Since the oscillation frequency of the high-frequency signal output from the inverter does not match, a resonance current (AC output) hardly flows through the resonance circuit 22. Therefore, the output Vt from the detection and smoothing circuit 23 is small, and the reference voltage setting circuit 24
Since the output Vs is larger than the output Vs, the output from the comparison circuit 25 outputs an "L" level signal because the input has a relationship of Vs> Vt (see the outputs 22 to 25 in FIG. 6). ). In this state, be charged to "wash" switch S ₁ of the water discharge command circuit 26, since the output terminal of the AND element 34 of the switch operating circuit 27 does not output only "L" level signal, the solenoid valve 5 is opened However, the washing water heated to an appropriate temperature does not blow out from the nozzle 7 (see the outputs of S ₁ and S 5 in FIG. 6).

(2) When the user P sits on the toilet seat 1 As shown in FIG. 3, when the user P sits on the toilet seat 1 for refilling, the capacitance C between the electrodes A and B in the resonance circuit 22 becomes the capacitance of the human body. Does the resonance frequency rapidly increase due to the capacitance Cm, and the resonance frequency determined by the capacitance C between the electrodes A and B and the inductance L of the resonance coil 32 matches the oscillation frequency of the high-frequency signal output from the oscillation circuit 21? Or, when they approach each other as much as possible, a large resonance current (AC output) flows through the resonance circuit 22, and the voltage between both ends of the resonance coil 32 is increased to be output to the detection and smoothing circuit 23 (see the output 22 in FIG. 6). . The output is half-wave rectified by the detecting diode D _2, and outputs to the comparator circuit 25 is smoothed by the CR time constant of the resistor R ₁ and capacitor C _3. The output voltage Vt from the detection / smoothing circuit 23 is compared with the reference voltage Vs of the reference voltage setting circuit 24 which is always input to the comparator CP. Outputs “H” level signal. It is detected that the human body is seated on the toilet seat 1 at the time when the "H" level signal is output from the comparison circuit 25 (see FIG. 6).
See outputs 23-23).

After sitting detected as described above, when the user P turns on the "wash" switch S ₁ of the water discharge command circuit 26 finishing Yotashi, switch operation is output to "H" level signal from the water discharge command circuit 26 The signal is input to the AND element 34 of the circuit 27.
Since the "H" level signal has already been input to the AND element 34 from the comparison circuit 25 as described above, the AND element 34
A signal of "H" level is output from the output terminal of the transistor ( ₁ ) to turn on the transistor Q (see the output of S1, 34 in FIG. 6). The constant voltage power supply Vcc → relay Y →
A current flows between the collector and the emitter of the transistor Q and ground, energizing the relay Y and closing its normally closed contact Ya. For this reason, the solenoid valve 5 is excited and opened by energization from the commercial power supply 18, and heats the washing water flowing into the heating device 6 to an appropriate temperature by energizing the heater 10 in accordance with a command signal from the control device 11. This is discharged from the nozzle 7 to sanitarily clean the local area of the user P. To cancel the washing, by open water discharge command circuit 26 by introducing a "wash" switch S ₁ again, turns off the transistors Q, releases the excitation of the relay Y electromagnetic the open circuit of the normally-open contact Ya The energization of the valve 5 is stopped, the solenoid valve 5 is closed, and the discharge of the cleaning water heated to an appropriate temperature is stopped (see 5 in FIG. 6).

In the case user P when away from the toilet seat 1 finishing Yotashi, or the rising inadvertently from the toilet seat 1, was charged with "wash" switch S ₁ by mistake at this time, the electrodes A, B
Since the human body is separated from the toilet seat 1, the capacitance C between them is smaller than when the user is sitting. Therefore, the resonance frequency determined by the capacitance C between the electrodes A and B and the inductance L of the resonance coil 32 does not coincide with the oscillation frequency output from the oscillation circuit 21 because the oscillation frequency is significantly different from the resonance frequency. Little current flows. Therefore, also "H" level signal from the water discharge command circuit 26 by introduction of "wash" switch S ₁ is output, since only the "L" level signal from the output terminal of the comparator circuit 25 does not output, the transistor Q Is not turned on, the relay Y keeps the non-excited state, and does not open the solenoid valve 5. Therefore, there is no possibility that the washing water at an appropriate temperature is ejected from the nozzle 7. This means, for example, that the toilet 2
During the cleaning of the toilet or when a heavy object such as a cleaning tool is placed on the toilet seat 1 or the like, the water discharge command circuit 26 is erroneously made as described above.
It is the same even if you put the "washing" switch S ₁ of.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

(1) In the present invention, a toilet seat warming heater is used as one electrode in a resonance circuit, and the other electrode is formed using the ground (floor surface of a toilet). Since it is configured to include a detection unit that outputs a detection signal and an electromagnetic valve control device that determines permission / non-permission of the washing water ejection based on the detection signal, the capacitance generated when the toilet seat is seated is reduced. It is not necessary to provide a special pair of electrodes for detecting the change, and the electromagnetic determining the permission / non-permission of the washing water ejection at the time of sitting / non-seating corresponding to the detection signal detected by the pair of electrodes. Since the valve control device has a simple configuration, the device for preventing erroneous operation of the sanitary washing device can be economically manufactured with a simple configuration.

(2) Further, the present invention comprises a high-frequency transformer, the primary side of which is connected to an oscillation circuit and a resonance coil, and the secondary side of which is connected to a toilet seat warming heater and a choke coil to form a resonance circuit. Therefore, when sitting on a toilet seat, when the capacitance between a pair of electrodes set between the toilet seat warming heater and the ground suddenly increases, the capacitance between the electrodes and the resonance coil Since the resonance frequency determined by the inductance is set to be substantially equal to the oscillation frequency from the oscillation circuit, a large resonance current flows through the resonance circuit so that the seating can be easily detected, and this resonance current is detected. Half-wave rectified to DC by the smoothing circuit, and "H"
It is configured to operate the functions of the sanitary washing device including the electromagnetic valve control device by outputting it as a level signal, to blow out hot water for local cleaning, and to activate the hot air drying and deodorizing functions (not shown). Therefore, as long as the user does not sit on the toilet seat, for example, even if the switch indicating "wash" is turned on, the washing water does not squirt at all. Therefore, it is possible to reliably solve the problem that the clothes and the toilet are wet due to the erroneous operation of the switch.

(3) Further, in the present invention, since the high-frequency transformer is used for the resonance circuit, the amount of change in the impedance of the circuit connected to the secondary side thereof, that is, the impedance of the energizing circuit of the heater for keeping the toilet seat warm, is one of that of the high-frequency transformer. Because of the proportionality to the square of the turns ratio of the secondary and secondary coils, the amount of change in the impedance can be effectively extracted to the primary side of the high-frequency transformer. As a result, when the human body is seated on the toilet seat, In addition, since the capacitance between the electrodes can be reliably increased and increased as compared with the case where no resonance circuit is provided, the sensitivity of the previously unstable seat detection can be significantly improved, and the seat detection can be significantly improved. Can be performed quickly and reliably. In addition, since the energizing circuit (strong electric section) of the toilet seat warming heater and the electric circuit (weak electric section) constituting the solenoid valve control device are connected using a high frequency transformer, the strong electric section and the weak electric section are connected. Insulation with the parts can be reliably performed, whereby the insulation distance of the weak electric part can be sufficiently maintained, that is, the insulation strength of the solenoid valve control device can be sufficiently maintained. Since the insulation strength of the control device can be made sufficiently high, an unexpected accident such as an electric leakage accident can be reliably prevented.

[Brief description of the drawings]

1 is a schematic side view of a toilet seat to which a sanitary washing device is attached, FIG. 2 is a schematic plan view thereof, FIG. 3 is a perspective view showing a state of use of the sanitary washing device, FIG. FIG. 5 is an electric circuit diagram of the erroneous operation prevention device of the present invention provided in the sanitary washing device, FIG. 6 is a time chart diagram, FIG. 7 is an electric circuit diagram used in the conventional sanitary washing device, and FIG. FIG. 1 is an electric circuit diagram of a conventional solenoid valve control device. DESCRIPTION OF SYMBOLS 1 ... Toilet seat, 20 ... Solenoid valve control device 21 ... Oscillation circuit, 22 ... Resonance circuit 23 ... Detection / smoothing circuit, 24 ... Reference voltage setting circuit 25 ... Comparison circuit, 29 ... High frequency transformer 30 ... heater, 31 ... choke coil 32 ... resonance coil, 32 ... resonance coil A, B ... electrodes

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hisayoshi Ota 1 Aichi-cho, Kasugai-shi, Aichi, Japan Aichi Electric Co., Ltd. Inventor Hiroyuki Adachi 1 Aichi-cho, Kasugai-shi, Aichi Pref. Aichi Electric Co., Ltd. Examiner Masaaki Ieda (56) References JP-A-62-37433 (JP, A) Ji-58-82200 (JP, U) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) E03D 9/00-9/16 A47K 13/30

Claims (2)

(57) [Claims] An electric circuit for a toilet seat warming heater disposed on an inner surface of a toilet seat is connected to a commercial power supply of one winding of a high-frequency transformer and a tuke coil, and the other winding of the high-frequency transformer is connected to a commercial power supply. An oscillation circuit and a resonance coil are connected to each other so that the toilet seat heating heater side is used as one electrode and the ground side is used as the other electrode, and the high-frequency transformer, the toilet seat heating heater, a choke coil, and a resonance coil are used. A resonance circuit for detecting a change in capacitance between the electrodes, and a comparison circuit for comparing the output of the resonance circuit with a reference value and outputting a predetermined signal; An apparatus for preventing erroneous operation of a sanitary washing device, wherein the sanitary washing device is operably controlled when is output. 2. A high-frequency transformer having one winding and a choke coil connected to a commercial power supply in an energizing circuit of a toilet seat warming heater disposed on an inner surface of the toilet seat, and an oscillating circuit connected to the other winding of the high-frequency transformer. A circuit and a resonance coil are connected to each other, and the toilet seat warming heater side is used as one electrode, the ground side is used as the other electrode, and the high frequency transformer, the toilet seat warming heater,
A resonance circuit including a choke coil and a resonance coil for detecting a change in capacitance between the electrodes, and a comparison circuit for comparing an output of the resonance circuit with a reference value and outputting a predetermined signal; An erroneous operation preventing device for a sanitary washing device, wherein a valve for discharging wash water is controlled to be openable when a predetermined signal is output from a comparison circuit.