JP5029483B2 - Toilet seat device - Google Patents

Description

  The present invention relates to seating detection of a toilet seat device.

  Conventionally, as a toilet seat device of this type, in a sanitary washing device having a washing function for washing a local part of a human body, in order to avoid discomfort to the human body, for example, washing water used for washing is appropriately used. A heating device that adjusts to a temperature and a device that has a function of adjusting the temperature of a toilet seat that is a contact portion with a human body to an appropriate temperature have been devised (see, for example, Patent Document 1).

  In the sanitary washing device described in Patent Document 1, a heater is provided inside an upper toilet seat casing formed of a magnesium alloy. The heater is composed of a core wire, a heating wire wound around the core wire, and a coated tube covering the core wire and the heating wire. A power supply circuit is connected to both ends of the heating wire.

  In such a configuration, the heating wire generates heat when a voltage is applied from the power supply circuit to the heating wire. Then, the heat is transmitted to the upper toilet seat casing. Thereby, the temperature of the upper toilet seat casing rises, and the user can comfortably sit on the toilet seat.

  As a seating detection method used for controlling the local cleaning function and the like, there is a seating detection device for toilet seats in which electrostatic electrodes are arranged inside the toilet seat (see, for example, Patent Document 2).

  In the seat detection device for a toilet seat described in Patent Document 2, a heating element for heating the toilet seat that is laid in the toilet seat in the vicinity of the seating surface, a metal heat transfer plate that is electrically insulated from the heating element, and a metal transfer plate A detection electrode plate for detection of seating that is electrically insulated from the heat plate, and a circuit unit that detects a change in capacitance using the detection electrode plate as one electrode to detect seating on the seating surface. .

In such a configuration, seating is detected by applying a high-frequency voltage to the detection electrode plate and electrically detecting a change in capacitance between the detection electrode plate and the ground.
JP 2003-310485 A Japanese Patent No. 3896629

  By the way, in the conventional sanitary washing apparatus as described above, capacitance detection is performed by an upper toilet seat casing formed of a magnesium alloy as described in Patent Document 1 and a detection electrode plate as described in Patent Document 2. When combined, the toilet seat is a metal part in contact with the human body, so it is grounded to the ground, and the detection electrode plate placed inside the toilet seat has a toilet seat connected to the ground between the human body and the detection electrode plate. Then, the capacitance change with and without the human body disappears, and seating detection due to the capacitance change becomes impossible.

  An object of the present invention is to provide a toilet seat device that can detect a seating by detecting a capacitance of a human body even when combined with a metallic toilet seat grounded to a ground.

In order to solve the conventional problems, a toilet seat device of the present invention includes a toilet seat having a seating surface including a metal material, and a capacitance detection electrode disposed in the vicinity of the seating surface, and the metal material is used. A seating surface including a seating detection unit for detecting seating of a human body in accordance with a change in capacitance of the reference potential and the capacitance detection electrode is connected to a reference potential with a specified impedance. It is.

  As a result, the user sitting on the toilet seat can be detected by detecting the changing capacitance between the presence and absence of a human body between the toilet seat connected to the reference potential and the capacitance detection electrode. It can be detected.

  The toilet seat device of the present invention can detect seating of a human body with a simple configuration by adding a capacitance detection electrode in addition to a toilet seat having a seating surface containing a metal material.

  A first invention includes a toilet seat having a seating surface including a metal material, and a capacitance detection electrode disposed in the vicinity of the seating surface, and the seating surface including the metal material is set to a reference potential with a specified impedance. Connected and provided with a seating detection unit that detects seating of the human body in accordance with changes in the reference potential and the capacitance of the capacitance detection electrode, the toilet seat connected to the reference potential and the capacitance detection The user sitting on the toilet seat can be detected by detecting the changing electrostatic capacity between when the human body is present and not between the electrodes.

  In a second aspect of the invention, in particular, in the first aspect of the present invention, when a user is seated on the toilet seat by providing a main body for pivotally supporting the toilet seat and installing a capacitance detection electrode on the main body, The user's body rear part is interposed between the seating surface of the toilet seat and the capacitance electrode installed on the main body, and the seating is detected by changing the capacitance between the seating surface and the capacitance electrode. Can do.

  According to a third aspect of the present invention, in particular, in the first aspect, the capacitance detection electrode is installed on the outer periphery of the toilet seat so that when the user is seated on the toilet seat, the user's buttocks and thighs are It is interposed between the seating surface and the capacitance electrode installed on the outer periphery of the toilet seat, and the seating can be detected by changing the capacitance between the seating surface and the capacitance electrode.

  According to a fourth aspect of the present invention, in particular, in the first aspect, when the user sits on the toilet seat by installing the capacitance detection electrode on the inner periphery of the toilet seat, the user's buttocks and thighs are Between the seating surface and the capacitance electrode installed on the outer periphery of the toilet seat, and the capacitance between the seating surface and the capacitance electrode changes, so that the seating can be detected.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, a binary value is set as an output threshold value of the capacitance detection electrode of the seating detection unit, and one of the values of the human body approaching the toilet seat is set. By using the other value for detection of seating, the user who entered the toilet room to use the toilet seat device at one threshold is detected, and the user seated on the toilet seat at the other threshold is detected. Since it is possible to detect the approach and seating of the human body with one electrode, a simple and low-cost toilet seat device can be provided.

  According to a sixth aspect of the present invention, there is provided a seating detection unit that detects a reference potential due to a change in the distance between the capacitance detection electrode and the toilet seat due to opening and closing of the toilet seat and a capacitance change between the capacitance detection electrodes. It is possible to detect the open / closed state and the seating / non-sitting state with a single capacitance detection electrode.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a schematic diagram showing a configuration of a warm water washing toilet seat device 100. Toilet seat for hot water washing 100
Includes a main body 200 and a toilet seat 400.

  As shown in FIG. 1, the main body 200 includes a control unit 210 formed of, for example, a microcomputer, a temperature measurement unit 401 that measures the temperature of the toilet seat, a heater drive unit 402 that drives the toilet seat heater, and a display unit that displays settings and abnormalities. 220, a control power supply unit 250 that generates a constant voltage DC voltage from a commercial power supply 240 for a circuit such as an operation unit 230 and a control unit that the user operates when changing settings of the toilet seat, etc. The water stop solenoid valve 310, the hot water heater 320 for heating the water to warm water, the local cleaning nozzle 330 for cleaning the buttocks and the bidet, and the seating detection unit 340 for detecting the seating of the human body.

  The negative side of the constant voltage generated by the control power supply unit 250 is a reference potential, and the reference potential is connected to one side of the commercial power supply 240 with a prescribed impedance C0 in the control power supply unit. Further, the commercial power supply 240 and the internal ground of the warm water washing toilet seat are connected by a capacitor having a prescribed impedance CY.

  The toilet seat 400 includes a toilet seat heater 450 and a thermistor 401a. The temperature measuring unit 401 converts the toilet seat temperature into a voltage based on the temperature signal output from the thermistor 401 a and inputs the voltage to the control unit 210.

  The control unit 210 inputs an energization rate switching signal to the heater drive unit 402 or displays the toilet seat set temperature or the like on the display unit 220 in accordance with the preset toilet seat temperature set and stored and the input from the operation unit 230. Or The heater drive unit 402 controls the current supplied from the commercial power supply 240 in accordance with the energization rate switching signal to control the energization to the toilet seat heater 450.

  FIG. 2 is an exploded perspective view of the toilet seat 400.

  As shown in FIG. 2, in the toilet seat 400, a substantially horseshoe-shaped toilet seat heater 450 is attached to the inner surface side of a substantially elliptical upper toilet seat casing 410 formed mainly of aluminum that forms a seating surface, and the thermistor 401a. Is provided, and includes a substantially oval lower toilet seat casing 420 formed of a synthetic resin.

  3 is a view of the toilet seat heater 450 attached to the upper toilet seat casing 410 as viewed from below, FIG. 4 (a) is a cross-sectional view taken along line AA in FIG. 3, and FIG. 4 (b) is FIG. 4 (a). FIG.

  Hereinafter, the front side viewed from the seated user is defined as the front portion of the toilet seat 400, and the rear side viewed from the seated user is defined as the rear of the toilet seat 400.

  As shown in FIGS. 2 and 3, the toilet seat heater 450 is formed in a substantially horseshoe shape in which a part of the front portion is cut off. The toilet seat heater 450 may have a substantially oval shape. The toilet seat heater 450 has a configuration in which a linear heater 460 is sandwiched between metal foils 451 and 453 made of, for example, aluminum.

  The linear heater 460 is disposed in a meandering shape in accordance with the shape of the upper toilet seat casing 410. The interval between the linear heaters 460 is about 5 mm.

  The heater start end portion 460 a and the heater end portion 460 b of the linear heater 460 are respectively connected to lead wires 470 drawn from one side of the rear portion of the toilet seat 400.

Furthermore, as shown in FIG. 3, a plurality of bent portions serving as thermal stress buffering portions are provided in the path of the meandering linear heater 460.

  Furthermore, as shown in FIG. 4, the upper toilet seat casing 410 forming the seating surface is formed of an aluminum plate 413 having a thickness of 1 mm, for example. A surface decorative layer 411 is formed on the upper surface of the aluminum plate 413. A coating film 414 is formed on the lower surface of the aluminum plate 413. The coating film 414 is, for example, a polyester powder coating film having a film thickness of 40 μm and heat resistance of 150 ° C., and can sufficiently secure an electrical withstand voltage performance of 1 minute or more at 1000 V, which is an electrical equipment technical standard.

  Instead of the aluminum plate 413, one or more of a copper plate, a stainless steel plate, an aluminum plated steel plate, and a zinc aluminum plated steel plate may be used.

  A metal foil 451 made of, for example, aluminum is attached to the lower surface of the coating film 414 via an adhesive layer 452a. The film thickness of the metal foil 451 is, for example, 50 μm. The metal foil 451 is composed of a PET layer 495a 25 μm and an aluminum foil layer 451a 25 μm, and has a structure in which strength is increased by the PET layer 451a.

  The linear heater 460 includes a heating wire 463a having a circular cross section, an enamel layer 463b, and an insulating coating layer 462. The outer peripheral surface of the heating wire 463a having a circular cross section is sequentially covered with the enamel layer 463b and the insulating coating layer 462. The enamel wire 463 is constituted by the heating wire 463a and the enamel layer 463b.

  The heating wire 463a has a diameter of 0.16 to 0.25 mm, for example, and is made of copper or a copper alloy. In this example, a high tensile strength heater wire made of 4% Ag—Cu alloy having a diameter of 0.176 mm is used as the heating wire 463a. The resistance value is 0.833 Ω / m.

  The enamel layer 463b is made of, for example, polyesterimide (PEI) having heat resistance of 180 to 300 ° C. The film thickness of the enamel layer 463b is 20 μm or less, and is 12 to 13 μm in this example. Alternatively, polyimide (PI) or polyamideimide (PAI) may be used as the material for the enamel layer 463b.

  The insulating coating layer 462 is made of a fluororesin such as a perfluoroalkoxy mixture (hereinafter referred to as PFA) having heat resistance of 260 ° C., for example. The thickness of the insulating coating layer 462 is, for example, 0.1 to 0.15 mm. The insulating coating layer 462 made of PFA can be formed by extrusion. Note that polyimide (PI) or polyamideimide (PAI) may be used as the material of the insulating coating layer 462.

The outer diameter of the linear heater 460 is, for example, 0.46 to 0.50 mm. The power density of the linear heater 460 is, for example, 0.95 W / cm ² .

  The linear heater 460 is attached to the metal foil 451 so as to be covered with an adhesive layer 452b and a metal foil 453 made of, for example, aluminum. The film thickness of the metal foil 453 is, for example, 50 μm. The metal foil 453 includes a PET layer 495b of 25 μm and an aluminum foil layer 453a of 25 μm, and has a structure in which strength is increased by the PET layer 495b.

  In addition, by coating the entire circumference of the end surface to which the metal foil 453 and the metal foil 451 are attached with the coating material 490, the inner surface side of the toilet seat can cover the charging part with the PET layer 495b and the coating material, and the toilet seat has water inside. Even if a spills, the structure will not cause leakage.

FIG. 5 is an external view of the warm water washing toilet seat device 100, and FIG. 5 is a schematic diagram showing a cross section taken along a dotted line C shown in FIG. 5 in a state where the user 500 is seated on the toilet seat 400.

  The main body case includes an upper casing 201 formed of synthetic resin. The detection electrode 342 of the seating detection unit 340 is disposed inside the position of the upper casing 201 close to the user's back surface. The detection electrode 342 is made of a conductive material such as copper or aluminum and has a sheet shape with an area of 4 square centimeters or more. The detection electrode 342 is fixed to the inner surface of the upper casing 201 with an adhesive tape or a screw so as not to be detached by vibration or the like.

  Since the upper toilet seat casing 410 is a metal part that forms a seating surface that comes into contact with the human body, it is connected to the ground. When the internal ground of the toilet seat device is connected to the ground, since the ground and one side of the commercial power supply are at the same potential, CY is short-circuited, and the upper toilet seat casing 410 of the toilet seat 400 is defined as a reference potential. Are connected at an impedance C0. Further, when not connected to the ground depending on the construction situation in the home, the upper toilet seat casing 410 of the toilet seat 400 is connected with a reference potential and a prescribed impedance C0 + CY.

  About the sanitary washing toilet seat comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the internal ground is connected to the ground, the seating detection circuit 341 measures the combined capacitance 1 / (1 / CX + 1 / C0) in advance when not seated. Next, when the user is seated on the toilet seat 400, the air is very small compared to the dielectric constant of the human body, so that the parasitic capacitance CX between the detection electrode 342 and the upper toilet seat casing 410 is due to the difference between the dielectric constant of the air and the human body. ΔCX increases, and the combined capacitance measured by the seating detection circuit 341 increases to 1 / (1 / (CX + ΔCX) + 1 / C0). This change is detected to determine the seating, and the seating detection circuit 341 sends a seating signal to the control unit 210.

  When the internal ground is not connected to the ground, the seating detection circuit 341 measures the electrostatic capacity 1 / (1 / CX + 1 / C0 + 1 / CY) when not seated in advance. Next, when the user is seated on the toilet seat 400, the air is very small compared to the dielectric constant of the human body, so that the parasitic capacitance CX between the detection electrode 342 and the upper toilet seat casing 410 is due to the difference between the dielectric constant of the air and the human body. ΔCX increases, and the combined capacitance measured by the seating detection circuit 341 increases to 1 / (1 / (CX + ΔCX) + 1 / C0 + 1 / CY). This change is detected to determine the seating, and the seating detection circuit 341 sends a seating signal to the control unit 210.

  Only when a seating signal is received, the control unit 210 can execute an operation of a function used in the seating state. For example, when the seated user performs a local cleaning operation, the water stop electromagnetic valve 310 is opened by the input signal to the operation unit 230 and the local cleaning nozzle 330 is moved to perform the local cleaning. When there is no seating signal, even if there is an input signal to the operation unit 230, it is possible to prevent washing water from jumping out of the toilet bowl by not performing local cleaning and not sitting by the user. In addition, even when the user suddenly stands up during washing, the seating detection circuit 341 determines the absence of seating due to a change in parasitic capacitance, and the control unit 210 stops the local washing and the washing water jumps out of the toilet. Can be prevented.

  Thus, even when combined with a metallic toilet seat such as aluminum, seating of the human body can be detected with high accuracy by detecting the capacitance.

  In the present embodiment, the hot water cleaning toilet seat device having a cleaning function such as a local cleaning nozzle for cleaning a local part of the human body has been described. However, the cleaning function is not an essential element of the present invention and has a cleaning function. There may be no toilet seat device.

(Embodiment 2)
FIG. 7 is a schematic diagram showing a configuration of a warm water washing toilet seat device 100 according to the second embodiment of the present invention, and FIG. 8 is an exploded perspective view of the toilet seat 400 portion. Explanation of the same parts as those in Embodiment 1 is omitted.

  As shown in FIG. 7, the main body 200 includes a control unit 210, a temperature measurement unit 401, a heater drive unit 402, a display unit 220, an operation unit 230, a control power supply unit 250, a water stop solenoid valve 310, a hot water heater 320, and a local unit. A cleaning nozzle 330 and a seating detection unit 340 are included.

  The toilet seat 400 includes a toilet seat heater 450, a thermistor 401a, and a detection electrode 343.

  As shown in FIG. 8, the toilet seat 400 has a structure in which a substantially horseshoe-shaped toilet seat heater 450 is attached to the inner surface side of a substantially elliptical upper toilet seat casing 410 formed mainly of aluminum, and a thermistor 401a is further attached. And a substantially elliptical lower toilet seat casing 420 formed of synthetic resin. A detection electrode 343 is disposed inside the outer periphery of the lower toilet seat casing 420.

  FIG. 9 is a schematic diagram showing a cross section taken along the dotted line D shown in FIG. 8 in a state where the user 500 is seated on the toilet seat 400. When the user is seated on the toilet seat, the seating detection unit 340 measures the parasitic capacitance between the detection electrode 343 and the upper toilet seat casing 410 connected to the reference potential, which increases due to the difference between the dielectric constant of air and the human body. The seating detection unit 340 determines whether the seating is performed based on the value, and sends a seating signal to the control unit 210. Only when a seating signal is received, the control unit 210 opens the water stop electromagnetic valve 310 and moves the local cleaning nozzle 330 in accordance with an input signal to the operation unit 210 to perform local cleaning. When there is no seating signal, even if there is an input signal to the operation unit 230, it is possible to prevent washing water from jumping out of the toilet bowl by not performing local cleaning and not sitting by the user. In addition, even when the user suddenly rises during washing, the seating detection unit 340 determines the absence of seating due to the change in the parasitic capacitance CX, the control unit 210 stops the local washing, and the washing water jumps out of the toilet bowl. This can be prevented.

  By providing the detection electrode 343 on the outer periphery of the toilet seat, even when a small person sits on the front side of the toilet seat, the user's thigh is close to somewhere on the outer periphery of the toilet seat so Can be detected.

  Thus, even when combined with a metallic toilet seat such as aluminum, seating of the human body can be detected with high accuracy by detecting the capacitance.

  In the present embodiment, the detection electrode is disposed inside the outer periphery of the lower toilet seat casing 420. However, the present invention is not limited to this, and the detection electrode may be disposed at another position such as the inner periphery.

  10 is a schematic view showing a state in which the detection electrode is arranged on the inner periphery of the lower toilet seat casing 420, FIG. 11 is an exploded perspective view, and FIG. 12 is a schematic view showing a section taken along a dotted line E in FIG.

  By arranging the detection electrode 343 also inside the inner periphery of the lower toilet seat casing 420, even if the user's foot is lifted and measurement with the outer detection electrode becomes difficult, seating can be detected by the inner detection electrode 343. , Seating detection is ensured.

  Further, in the present embodiment, as in the first embodiment, the hot water cleaning toilet seat apparatus having a cleaning function such as a local cleaning nozzle for cleaning a local part of the human body has been described. However, the cleaning function is essential for the present invention. It may be a toilet seat device that is not an element and does not have a cleaning function.

(Embodiment 3)
FIGS. 13, 14 and 15 are schematic views showing the configuration of the warm water flush toilet seat device 100 according to the third embodiment of the present invention. The description of the same parts as in the first and second embodiments is omitted. FIG. 13 shows the case where the user 500 is seated on the toilet seat, FIG. 14 shows the case where the user 500 is away, and FIG. 15 shows the case where the user 500 approaches the toilet seat with hot water washing.

  The electrostatic capacitance CX between the toilet seat 410 and the detection electrode 342 changes according to the difference between the dielectric constant of air and the human body existing between the toilet seat and the detection electrode 342, and the parasitic capacitance CX increases as the dielectric constant increases. Since the dielectric constant of air is very small compared to the human body, the parasitic capacitance CX increases in the order of the non-sitting state of FIG. 14, the state of approaching the user of FIG. 15, and the sitting state of FIG. By setting a threshold value between the three states, the seating detection circuit 341 can determine non-seating, human body detection, and seating states.

  In this way, by making the determination value of detection based on binary determination of approaching and sitting of the human body, it is possible to detect a change in capacitance when the human body approaches, and the user 500 can change to the warm water washing toilet seat. It is possible to detect approaching. Therefore, only when the human body approaches, for example, by starting energization of the toilet seat and warming the toilet seat, the electricity bill can be saved greatly.

  In the present embodiment, as in the first and second embodiments, a hot water cleaning toilet seat apparatus having a cleaning function such as a local cleaning nozzle for cleaning a local part of a human body will be described. However, the cleaning function is essential for the present invention. It may be a toilet seat device that is not an element and does not have a cleaning function.

(Embodiment 4)
16 and 17 are configuration diagrams showing the configuration of the hot water toilet seat device 100 according to the fourth embodiment of the present invention. The description of the same parts as in the first to third embodiments is omitted. FIG. 16 shows the case where the toilet seat is closed, and FIG. 17 shows the case where the toilet seat is opened. When the toilet seat is opened, the parasitic capacitance CX changes due to a change in the distance between the toilet seat and the detection electrode 342. Since the parasitic capacitance CX is inversely proportional to the distance, in FIG. 17, when the toilet seat is opened, the toilet seat and the detection electrode are separated from each other, so that the parasitic capacitance CX between the toilet seat and the detection electrode is reduced. The seating detection circuit 341 can detect that CX is smaller than that in the non-sitting state, and can detect that the toilet seat is opened.

  In this way, by detecting the open state of the toilet seat and shutting off the energization of the heated toilet seat at that time, it is possible to greatly save the electricity bill.

  In the present embodiment, as in the first to third embodiments, the hot water cleaning toilet seat apparatus having a cleaning function such as a local cleaning nozzle for cleaning a local part of the human body has been described. The toilet seat device which is not an essential element and does not have a cleaning function may be used.

  Since the seated human body can be detected, the present invention can be applied to uses such as a heater used in a seated state.

Schematic diagram of warm water washing toilet seat device in Embodiment 1 of the present invention The exploded perspective view of the toilet seat part in Embodiment 1 of this invention The bottom view of the upper toilet seat casing in Embodiment 1 of this invention (A) is AA sectional drawing of FIG. 3, (b) is the B section enlarged view of (a). External view of warm water washing toilet seat in Embodiment 1 of the present invention FIG. 5 is a schematic diagram showing a cross section of a portion C in FIG. Schematic diagram of a warm water washing toilet seat device in Embodiment 2 of the present invention The exploded perspective view of the toilet seat in Embodiment 2 of the present invention FIG. 8 is a schematic diagram showing a cross section of a D part in FIG. Schematic diagram of a warm water washing toilet seat device in Embodiment 2 of the present invention The exploded perspective view of the toilet seat in Embodiment 2 of the present invention FIG. 11 is a schematic diagram showing a cross section of an E portion of FIG. The schematic diagram which shows the seating state in Embodiment 3 of this invention The schematic diagram which shows the non-seating state in Embodiment 3 of this invention The schematic diagram which shows the human body detection state in Embodiment 3 of this invention The schematic diagram which shows the time of toilet seat closing in Embodiment 4 of this invention The schematic diagram which shows the time of toilet seat opening in Embodiment 4 of this invention

Explanation of symbols

100 Toilet seat device with hot water washing (toilet seat device)
200 Main Body 340 Seating Detection Unit 342, 343 Detection Electrode (Capacitance Detection Electrode)
400 Toilet seat (toilet seat)
410 Upper toilet seat casing (sitting surface)

Claims (6)

A toilet seat having a seating surface including a metal material; and a capacitance detection electrode disposed in the vicinity of the seating surface, wherein the seating surface including the metal material is connected to a reference potential with a prescribed impedance, and the reference potential And a seating detection unit for detecting seating of a human body in accordance with a change in capacitance of the capacitance detection electrode. The toilet seat device according to claim 1, wherein a main body that pivotally supports the toilet seat is provided, and a capacitance detection electrode is installed on the main body. The toilet seat device according to claim 1, wherein the capacitance detection electrode is installed on an outer peripheral portion of the toilet seat. The toilet seat device according to claim 1, wherein a toilet seat having a seating surface and containing a metal material and an electrostatic capacitance detection electrode are installed on an inner periphery of the toilet seat. The seating detection unit sets two values as a threshold value of the capacitance change between the reference potential and the capacitance detection electrode, and uses one value to detect a human body approaching the toilet seat, and the other value to detect seating. The toilet seat apparatus of any one of Claim 1 to 4 used for. A seating detection unit that also detects the opening and closing of the toilet seat by a change in the capacitance between the reference potential and the capacitance detection electrode due to a change in the distance between the capacitance detection electrode and the seating surface of the toilet seat due to the opening and closing of the toilet seat The toilet seat device according to claim 2.