JP2009125333A - Toilet seat apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet seat apparatus capable of suppressing inrush current of a toilet seat heater. <P>SOLUTION: This toilet seat apparatus is provided with a changeover drive unit 1300 capable of changing over the toilet seat heater 450 and a hot-water heater 1020 between serial and parallel arrangements; and is configured to serially connect the toilet seat heater 450 and the hot-water heater 1020 at an initial time when actuating the toilet seat heater 450 and then, connect the toilet seat heater 450 and the hot-water heater 1020 in parallel to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a toilet seat device.

  In the field of sanitary washing devices for washing the local part of the human body, in order to avoid discomfort to the human body, for example, a heating device for adjusting washing water used for washing to an appropriate temperature or a contact portion with the human body. Devices having various functions such as a toilet seat device for adjusting the temperature to an appropriate temperature have been devised. Especially, according to the toilet seat apparatus shown above, even when the temperature is low such as in winter, the user can sit on the toilet seat without feeling uncomfortable (see, for example, Patent Document 1).

  In the sanitary washing device described in Patent Document 1, a linear heater is provided inside a toilet seat casing formed of a magnesium alloy. The linear heater includes a core wire, a heating wire wound around the core wire, and a coated tube that covers the core wire and the heating wire. The linear heater is disposed so as to meander over the entire back surface of the toilet seat casing, and 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. And the heat is transmitted to a toilet seat casing via a covering tube. Thereby, the temperature of the toilet seat casing rises and the user can comfortably sit on the toilet seat.
JP 2003-310485 A

  By the way, in the conventional sanitary washing apparatus as described above, the heating wire is designed to flow a large current with a low resistance value in order to improve the rising characteristics. In particular, if the heat capacity of the heating wire is increased in order to raise the temperature rapidly, the resistance value further decreases when the line temperature of the heating wire is low, and an inrush current flows at the start of energization. There were problems such as exceeding.

  An object of the present invention is to provide a toilet seat device capable of quickly raising the temperature of a toilet seat while suppressing the inrush current to the heating wire of the toilet seat and suppressing the total power as a device.

  In order to solve the above-described problems, a toilet seat device according to the present invention includes a toilet seat, a toilet seat main body that supports the toilet seat and is placed on a toilet, and various functional units of the toilet seat device provided inside the toilet seat device main body. When the use of the toilet seat is detected, the toilet seat heater that heats the seating surface of the toilet seat by heating the seat is selectively connected in series or in parallel to the toilet seat heater and the power load provided in the various functional units. Serial / parallel switching means, and the serial / parallel switching means is connected in series with the power load at the start of large power input to the toilet seat heater.

  As a result, at the start of energization of the large-capacity toilet seat heater, it is connected in series with at least one of the power loads provided in the various functional units, that is, other power loads built in the device, and Generation | occurrence | production can be suppressed and a toilet seat can be heated up rapidly, suppressing the total electric power as an apparatus.

ADVANTAGE OF THE INVENTION According to this invention, the toilet seat apparatus which can suppress the rush current to a toilet seat heater reliably can be provided.

  When the first invention detects use of the toilet seat, the toilet seat main body that supports the toilet seat and is placed on the toilet, the various functional units of the toilet seat device provided in the toilet seat main body, and the use of the toilet seat A toilet seat heater that raises the temperature of the seating surface of the toilet seat by electric power and heats, and a series / parallel switching means that selectively connects the toilet seat heater and an electric power load provided in the various functional units in series or in parallel, The series / parallel switching means is connected in series with the electric power load at the start of supplying large electric power to the toilet seat heater.

  Thereby, in the heated toilet seat configured to detect the use of the toilet seat and energize the toilet seat heater to heat the toilet seat immediately before sitting, the power load of various functional units provided in the toilet seat heater and the toilet seat device, It is possible to prevent the inrush current of the toilet seat heater from being generated in series only at the start of supplying large power to the toilet seat heater. Furthermore, even if the power load is driven in series with the power load in the toilet seat device temporarily, the drive is effective when the toilet seat device is used.

  The second invention has a hot water heater unit as various functional units, and the power load is a heater of the hot water heater unit. Thus, by using the hot water heater of the hot water heater unit as the electric power load, conventionally, the operation of warming the water circuit system immediately before using the hot water as a preheat at the time of sitting is performed. Further pre-energization of the preheat is performed, and the warm water heater supplements the warming energy of the preheat.

  According to a third aspect of the present invention, the serial / parallel switching means switches the connection between the power load and the toilet seat heater in parallel before the start of large power input to the toilet seat heater and after a predetermined time has elapsed after the start of large power input. , Each is driven separately. Thereby, after switching to parallel connection, a heating operation can be performed at an appropriate operation timing for each toilet seat heater and each functional unit.

  In a fourth aspect of the invention, the series / parallel switching device is constituted by an electromagnetic relay.

  5th invention is provided with a human body detection means, and when it detects that the user entered the toilet room by the said human body detection means, start-up of the big electric power to a toilet seat heater is started.

  Thereby, energization to the toilet seat heater is started immediately upon detection of a human body, and the toilet seat is heated while suppressing the inrush current. Therefore, energy-saving and safe toilet seat heating can be realized.

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

<1> Appearance of sanitary washing device and toilet device provided with the same FIG. 1 is an external perspective view showing a sanitary washing device and a toilet device provided therewith according to an embodiment of the present invention. The toilet apparatus 1000 is installed in a toilet room.

  In the toilet apparatus 1000, the sanitary washing apparatus 100 is attached to the toilet bowl 700. The sanitary washing device 100 includes a main body 200, a remote operation device 300, a toilet seat 400 and a lid 500. Each component of the sanitary washing device 100 excluding the lid 500 constitutes a toilet seat device 110 described later.

A toilet seat 400 and a lid 500 are attached to the main body 200 so as to be openable and closable.
The main body 200 is provided with a cleaning water supply mechanism (not shown) and a control unit 90 (FIG. 2) described later.

  In FIG. 1, a seating sensor 610 provided in the upper front portion of the main body 200 is shown. The seating sensor 610 is, for example, a reflective infrared sensor. In this case, the seating sensor 610 detects the presence of a user on the toilet seat 400 by detecting infrared rays reflected from the human body.

  Further, FIG. 1 shows a state in which the toilet nozzle 40 provided at the lower front portion of the main body 200 protrudes inside the toilet 700. The toilet nozzle 40 is connected to the above-described washing water supply mechanism.

  The washing water supply mechanism is connected to a water pipe (not shown). Thereby, the wash water supply mechanism supplies the wash water supplied from the water pipe to the toilet nozzle 40. Thereby, washing water is ejected from the toilet nozzle 40 to a wide area on the inner surface of the toilet 700 (toilet bowl pre-washing). Alternatively, washing water is ejected from the toilet nozzle 40 to the back side of the inner surface of the toilet 700 (toilet rear cleaning). Details will be described later.

  Further, the cleaning water supply mechanism is connected to a nozzle unit 20 described later. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the nozzle unit 20. Thereby, washing water is ejected from the nozzle part 20 to a user's local part.

  The remote operation device 300 is provided with a plurality of switches. The remote control device 300 is attached to a place where a user sitting on the toilet seat 400 can operate, for example.

  The entrance detection sensor 600 is attached to an entrance of a toilet room or the like. The entrance detection sensor 600 is, for example, a reflective infrared sensor. In this case, the entrance detection sensor 600 detects that the user has entered the toilet room when detecting infrared rays reflected from the human body.

  The control unit 90 (FIG. 2) of the main body unit 200 controls the operation of each unit of the sanitary washing device 100 based on signals transmitted from the remote operation device 300, the room entry detection sensor 600, and the seating sensor 610.

(1-a) Configuration of Toilet Seat Device FIG. 2 is a schematic diagram showing the configuration of the toilet seat device 110. As described above, the toilet seat device 110 includes the main body portion 200, the remote control device 300, the toilet seat portion 400, and the entrance detection sensor 600 that is a human body detection unit that detects that the user has entered the toilet room.

  As shown in FIG. 2, the main body 200 includes a control unit 90, a temperature measurement unit 401, a heater driving unit 402, a toilet seat temperature adjustment lamp RA <b> 1, and a seating sensor 610.

  The toilet seat 400 includes a toilet seat heater 450 and a thermistor 401a.

  The control unit 90 is formed of, for example, a microcomputer, and includes a determination unit that determines the user's entrance and the temperature of the toilet seat 400, a timer unit having a timer function, a storage unit that stores various information, and a heater driving unit 402. Including an energization rate switching circuit for controlling the operation.

The temperature measuring unit 401 of the main body 200 is connected to the thermistor 401 a of the toilet seat 400. Thereby, the temperature measurement part 401 measures the temperature of the toilet seat part 400 based on the signal output from the thermistor 401a. Hereinafter, the temperature of the toilet seat 400 measured by the temperature measuring unit 401 through the thermistor 401a is referred to as a measured temperature value.

  Further, the heater driving unit 402 of the main body 200 is connected to the toilet seat heater 450 of the toilet seat 400. As a result, the heater driving unit 402 drives the toilet seat heater 450.

  In the present embodiment, toilet seat device 110 operates as follows. At the time of initial setting, the temperature of the toilet seat 400 is adjusted to about 18 ° C., for example, by the control unit 90 controlling the heater driving unit 402. The temperature at this time is referred to as a standby temperature.

  Here, when the user operates the toilet seat temperature adjustment switch 333 of the remote control device 300, the toilet seat set temperature is transmitted to the control unit 90. The control unit 90 stores the toilet seat set temperature received from the remote operation device 300 in the storage unit.

  When the user enters the toilet room, the entry detection sensor 600 detects the entry of the user. As a result, a user entry detection signal is transmitted to the control unit 90.

  Next, the operation during normal use will be described. The determination unit of the control unit 90 detects the user's entry into the toilet room based on the entry detection signal from the entry detection sensor 600. Therefore, the determination unit selects a specific heater control pattern related to driving of the toilet seat heater 450 based on the measured temperature value of the toilet seat unit 400 and the toilet seat set temperature stored in the storage unit.

  The energization rate switching circuit controls the operation of the heater driving unit 402 based on the selected heater control pattern and time information obtained by the time measuring unit.

  Accordingly, the toilet seat heater 450 is driven by the heater driving unit 402, and the temperature of the toilet seat 400 is instantaneously increased to the toilet seat set temperature.

(1-b) First Example of Toilet Seat 400 FIG. 3 is an exploded perspective view of the toilet seat 400. FIG. 4A is a plan view of the toilet seat heater 450 of the toilet seat 400 of the first example, and FIG. 4B is an enlarged view of a region C72 in FIG. 4A. FIG. 5 is a plan view of the toilet seat 400 of the first example. FIG. 6 is a C5-C5 cross-sectional view of the toilet seat 400 of FIG.

  As shown in FIG. 3, the toilet seat 400 includes a substantially oval upper toilet seat casing 410 formed mainly of aluminum, a substantially horseshoe-shaped toilet seat heater 450, and a substantially oval lower toilet seat casing 420 formed of a synthetic resin. Prepare.

  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. 4A and 5, 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 includes metal foils 451 and 453 made of, for example, aluminum and a linear heater 460.

  The linear heater 460 is disposed in a meandering manner in accordance with the shape of the upper toilet seat casing 410 in the region from the seat center portion SE3 to the seat one end portion SE1 and in the region from the seat center portion SE3 to the seat other end portion SE2. .

  Specifically, the linear heater 460 is formed to have U-shaped portions of about six rows on the left and right. These U-shaped parts are arranged in parallel substantially along the direction of the thigh of the seated user. The interval between the linear heaters 460 in each U-shaped portion 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.

  Further, as shown in FIG. 4B, a plurality of bent portions CU serving as thermal stress buffering portions are provided in the path of the meandering linear heater 460.

  As shown in FIG. 6, the distance ds1 of the linear heater 460 in the region G1 along the outer side of the upper toilet seat casing 410 and the distance ds3 of the linear heater 460 in the region G3 along the inner side are It is set to be smaller than the distance ds2 between the linear heaters 460 in the central region G2 of the toilet seat casing 410. Thereby, in the area | region G1 along the outer side edge of the upper toilet seat casing 410, and the area | region G3 along the inner side edge, the linear heaters 460 are arranged densely compared with the area | region G2 of a center part.

(1-c) Second Example of Toilet Seat 400 FIG. 7A is a plan view of the toilet seat heater 450 of the toilet seat 400 of the second example, and FIG. 7B is the region of FIG. 7A. FIG. 8 is an enlarged view of C77, and FIG. 8 is a plan view of the toilet seat 400 of the second example.

  As shown in FIGS. 7A and 8, the linear heater 460 is provided in the upper toilet seat casing in the region from the seat center portion SE3 to the seat one end portion SE1 and in the region from the seat center portion SE3 to the seat other end portion SE2. It is arranged in a meandering shape that meanders in the left-right direction according to the shape of 410. In this example, the linear heater 460 is disposed so that the meandering bent portion is positioned in the vicinity of the outer side and the inner side of the upper toilet seat casing 410.

  Specifically, the linear heater 460 extends while meandering left and right from one side of the rear portion of the toilet seat heater 450 to the vicinity of the seat one end SE1, thereby forming the first series A meandering shape of FIG. Is done. Further, the linear heater 460 meanders from the vicinity of the sheet one end part SE1 to the left and right while extending to the vicinity of the sheet other end part SE2 through the vicinity of the sheet center part SE3, thereby forming the second series B meandering shape. Is done. Further, the linear heater 460 extends from the vicinity of the seat other end portion SE2 to the one side of the rear portion of the toilet seat heater 450 through the vicinity of the seat center portion SE3, thereby forming a first series A meandering shape.

  Further, as shown in FIG. 7B, the first series A meandering linear heater 460 and the second series B meandering linear heater 460 are arranged substantially in parallel. The meandering linear heaters 460 of the first series A and the second series B are continuous from the heater start end portion 460a to the heater end portion 460b.

  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.

  In this example, the linear heater 460 has a meandering shape in which a bent portion is positioned in the vicinity of the inner side of the toilet seat heater 450 and in the vicinity of the outer side. Thereby, the space | interval between bending parts is short. Therefore, since the length change resulting from thermal expansion and thermal contraction is small, even if the linear heater 460 expands and contracts, the strain due to expansion and contraction is absorbed and buffered at the bending portion. As a result, the stress resulting from the thermal expansion and contraction of the linear heater 460 is reduced, and damage due to long-term use can be suppressed.

  In addition, since the thermal expansion and contraction of the linear heater 460 is small, the adhesion to the metal foils 451 and 453 can be maintained satisfactorily for a long time. Thereby, heating of the toilet seat heater 450 can be performed efficiently and reliably.

  Moreover, as shown in FIG.7 (b), the length La of a bending part, Lb and the space | interval S between bending parts can be adjusted arbitrarily. Thereby, the heating distribution of the toilet seat heater 450 can be adjusted.

  For example, the lengths La and Lb of the bent portions and the spacing S between the bent portions are adjusted so that the heating density in the vicinity of the outer side and the inner side of the toilet seat heater 450 is higher than the heating density in the central portion of the toilet seat heater 450. To do. Thereby, the uniform heating temperature can be maintained in the entire region of the toilet seat heater 450.

  In this example, the current direction in the first series A meandering linear heater 460 is opposite to the current direction in the first series B meandering linear heater 460. Thereby, the electromagnetic waves generated from the linear heaters 460 cancel each other. As a result, generation of noise is prevented.

(1-d) Third Example of Toilet Seat 400 FIG. 9A is a plan view of the toilet seat heater 450 of the toilet seat 400 in the third example, and FIG. 9B is a diagram of FIG. 9A. It is an expanded sectional view of a part.

  As shown in FIG. 9A, temperature measuring portions 450T in which the linear heaters 460 meander at high density are formed on both sides of the rear portion of the toilet seat heater 450, respectively. As shown in FIG. 9B, the one thermometer 450T is provided with a resettable thermostat 450Q using bimetal or the like. The other temperature detecting section 450T is provided with a non-returnable thermostat 450Q using a thermal fuse or the like.

  For example, when the toilet seat heater 450 reaches an unexpected abnormal temperature, the energization is temporarily stopped by opening the return thermostat 450Q. In addition, when the reset thermostat 450Q causes a failure or the like and the toilet seat heater 450 attempts to reach a dangerous temperature, the non-reset thermostat 450Q is opened to cut off the supply of electric power.

  Here, it is desirable that the operating temperature setting of the thermostat 450Q or the thermal fuse for preventing overheating is set lower than the temperature at which it is actually desired to shut off. The toilet seat having the configuration described in the present embodiment has a high rate of temperature increase. Therefore, depending on the operating speed of the safety device (for example, the thermostat 450Q or the thermal fuse), the toilet seat surface may be at a temperature higher than the preset temperature at the timing when the energization is actually stopped. Because there is. Of the human skin, the skin of the buttocks and thighs that are not normally exposed are more sensitive than the skin of other parts. Thereby, a higher safety design as described above becomes important.

(1-e) Fourth Example of Toilet Seat 400 FIG. 10 is a plan view of the toilet seat heater 450 of the toilet seat 400 in the fourth example.

  As shown in FIG. 10, a linear heater 460 arranged in a region from the sheet center part SE3 to the left sheet one end part SE1, and a linear pattern arranged in a region from the sheet center part SE3 to the sheet other end part SE2. The heater 460 is separated from each other.

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

(1-f) Example of Structure of Toilet Seat Heater 450 FIG. 11 is a cross-sectional view showing an example of the structure of the toilet seat heater 450 attached to the upper toilet seat casing 410.

  As shown in FIG. 11, the upper toilet seat casing 410 is formed of, for example, an aluminum plate 413 having a thickness of 1 mm. An alumite layer 412 and a surface decorative layer 411 are formed on the upper surface of the aluminum plate 413. The upper surface of the surface decorative layer 411 becomes the seating surface 410U. A coating film 414 is formed on the lower surface of the aluminum plate 413. The coating film 414 is a polyester powder coating film having a film thickness of 40 μm and heat resistance of 150 ° C., for example.

  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 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. Such an enameled wire 463 sufficiently secures an electrical withstand voltage performance of 1 minute or more at 1000 V, which is an electrical equipment technical standard, even if the enamel layer 463b has a very thin film thickness of about 0.01 to 0.02 mm. be able to. 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. In this case, even if the thickness of the insulating coating layer 462 is as thin as 0.05 to 0.1 mm, it is possible to ensure electrical withstand voltage performance that can withstand lightning surge.

  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.

  In this manner, a double insulation structure can be ensured by forming the insulating coating layer 462 on the single enamel wire 463.

  Further, sufficient insulation can be obtained even if the insulating coating layer 462 is relatively thin. Therefore, the thickness of the insulating coating layer 462 can be reduced. In the above example, the resin layers (enamel layer 463b and insulating coating layer 462) of the linear heater 460 are as thin as about 0.12 mm. In this case, heat conduction from the heating wire 463a to the metal foil 451 and the toilet seat casing 410 can be performed very agile.

  Incidentally, in the conventional toilet seat device, the thickness of the covering tube made of silicone rubber, vinyl chloride or the like of the linear heater is about 1 mm, which is about 10 times that of the above example. The heat conduction rate of such a coated tube was extremely slow, and the temperature raising rate of the toilet seat could not be increased.

  In the conventional toilet seat device, when a large electric power is supplied to the heater wire in order to forcibly increase the temperature raising rate of the toilet seat, the coated tube is melted and burnt out as in the case where the temperature of the heater wire is increased in the heat insulating state. Therefore, raising the temperature of the toilet seat by such a method has not been practical.

  On the other hand, when the enameled wire 463 having excellent heat resistance as in this example is used as a heater wire, the temperature of the toilet seat can be raised in a sufficiently short time, and electrical insulation and safety can be ensured. Therefore, the structure of this example can be effectively used for various toilet seat devices.

  In the structure of this example, the resin layer composed of the enamel layer 463b and the insulating coating layer 462 can be formed with a thin thickness of about 0.1 to 0.4 mm. Thus, the temperature of the toilet seat can be rapidly raised in a state where the absolute temperature of the heating wire 463a and the resin layer is maintained at a low temperature. As a result, a relatively inexpensive insulating material can be used instead of an expensive heat-resistant insulating material.

In this example, in order to efficiently transfer the heat of the linear heater 460 to the toilet seat casing 410, the linear heater 460 is sandwiched between aluminum foils 451 and 452. Here, in the linear heater 460 of this example, since the enamel layer 463b and the insulating coating layer 462 can be thinned, the outer diameter of the linear heater 460 can be reduced (about φ0.2 to φ0.4). In this case, when the aluminum foil 451 and the aluminum foil 452 are bonded together, the air layer between the aluminum foil 451 and the aluminum foil 452 can be reduced, and wrinkles of the aluminum foils 451 and 452 can be reduced. it can. Thereby, the local high heat of the enamel wire 463 is suppressed, and the disconnection of the enamel wire 463 and the damage to the electrical insulating layer (enamel layer 463b and the insulating coating layer 462) are prevented. As a result, the service life of the toilet seat device 110 can be extended.

  Further, since the enamel wire 463 can be made thin, the weight of the toilet seat heater 450 can be reduced, and the toilet seat opening / closing torque can be reduced. Thereby, the electric opening / closing unit for opening and closing the toilet seat can be downsized, and the toilet seat device 110 can be downsized.

(1-g) Another Example of the Structure of the Toilet Seat Heater 450 FIG. 12 is a cross-sectional view illustrating another example of the structure of the toilet seat heater 450 attached to the upper toilet seat casing 410.

  In the example of FIG. 12, a plurality of enamel wires 463 are twisted and covered with an insulating coating layer 462. Each enamel wire 463 is constituted by, for example, a heating wire 463a having a diameter of 0.1 mm and an enamel layer 463b having a thickness of 10 μm.

  Thus, a double insulation structure can be ensured by forming the insulation coating layer 462 so as to surround the bundle of the plurality of enamel wires 463.

  In the example of FIG. 12, seven enamel wires 463 are twisted together, but the number of enamel wires 463 is not limited to seven. For example, two heating wires 463a (hereinafter referred to as a single heating wire 463a) that are not covered with the two enamel wires 463 and the enamel layer 463b may be twisted together.

  In this configuration, for example, when one enamel layer 463b of the two enamel wires 463 is broken down due to local high heat or the like, the heating wire 463a of the enamel wire 463 and the single heating wire 463a described above Are electrically connected. Therefore, according to this configuration, the dielectric breakdown of the enamel layer 463b can be detected by using the single heating wire 463a as the dielectric breakdown detection line. Thereby, when the enamel layer 463b of any one of the two enamel wires 463 is broken down, the energization to all the heating wires 463a can be cut off.

  That is, even when the enamel layer 463b of any of the enamel wires 463 is broken down due to local high heat or the like by making at least one of the plurality of stranded wires non-insulated electric wires without the enamel layer 463b, Dielectric breakdown can be detected quickly. Thereby, it is possible to safely cut off the power supply to the heating wire 463a.

  In the above description, the case where a plurality of enamel wires 463 are twisted together has been described. However, a plurality of enamel wires 463 may be simply bundled.

  Further, the direction of the current flowing through the predetermined number of the heating lines 463a among the plurality of heating lines 463a may be reversed from the direction of the current flowing through the remaining heating lines 463a. In this case, the magnetic field generated by the current flowing in one direction and the magnetic field generated by the current flowing in the other direction cancel each other. Thereby, generation | occurrence | production of a leakage magnetic field and generation | occurrence | production of noise can be suppressed.

(1-h) Still Another Example of the Structure of the Toilet Seat Heater 450 FIG. 13 is a cross-sectional view showing still another example of the structure of the toilet seat heater 450 attached to the upper toilet seat casing 410.

  In the example of FIG. 13, a heat resistant insulating layer 455 is formed between the metal foil 451 and the adhesive layer 452b. Further, a heat resistant insulating layer 456 is formed between the adhesive layer 452b and the metal foil 453. The heat-resistant insulating layer 455 is made of, for example, polyethylene terephthalate (PET) having a heat resistance of 150 ° C. and a film thickness of 12 to 25 μm. Similarly, the heat-resistant insulating layer 455 is made of PET having a heat resistance of 150 ° C. and a film thickness of 12 to 25 μm, for example.

  In this manner, a triple insulation structure can be secured by forming the insulating coating layer 462 on the single enamel wire 463 and forming the heat resistant insulating layers 455 and 456.

  In the toilet seat heater 450 of FIG. 13, a bundle of a plurality of enamel wires 463 may be used instead of the single enamel wire 463.

(1-i) Covering Thickness of Heating Wire 463a FIG. 14 is a diagram showing a measurement result of the relationship between the coating thickness of the heating wire 463a and the temperature rise of each part of the toilet seat 400. In FIG. 14, the horizontal axis represents the coating thickness of the heating wire 463a, and the vertical axis represents the temperature increase value [K] 6 seconds after the start of energization.

  For the measurement, a toilet seat heater 450 having the structure of FIG. 13 was used. The coating thickness of the heating wire 463a is the thickness between the heating wire 463a and the aluminum plate 413. In this example, the total thickness of the enamel layer 463b, the heat-resistant insulating layer 455, the adhesive layer 452a, and the coating film 414 It is.

  Here, the temperature rise of the seating surface 410U of the toilet seat 400, which is about 10K in 6 seconds, was regarded as the practical temperature rise performance, and the temperature rise of about 13K in 6 seconds was taken as the target temperature rise performance.

  In FIG. 14, a circle mark is a temperature increase value of the seating surface 410 U of the toilet seat 400, a triangle mark is a temperature increase value of the metal foil 451 made of aluminum, and a square mark is a temperature increase value of the insulating coating layer 462. .

  From the results of FIG. 14, it can be seen that practical temperature rise performance is obtained when the coating thickness of the heating wire 463a is 0.4 mm or less. It can also be seen that the target temperature rise performance is obtained when the coating thickness of the heating wire 463a is 0.2 mm or less. Therefore, the coating thickness of the heating wire 463a is preferably 0.4 mm or less, and more preferably 0.2 mm or less.

(1-j) Material of Insulating Coating Layer 462 Next, an AC voltage of 100 V was applied to three types of toilet seat heaters 450 having the structure of FIG. 13 to measure the temperature of the heating wire 463a.

  In the first toilet seat heater 450, PFA having a film thickness of 100 μm and a heat resistant temperature of 260 ° C. is used as the material of the insulating coating layer 462, and PET having a film thickness of 25 μm and a heat resistant temperature of 150 ° C. is used as the material of the heat resistant insulating layers 455 and 456, respectively. It was. In the second toilet seat heater 450, a PI winding coating having a film thickness of 35 to 40 μm and a heat resistant temperature of 350 ° C. is used as the material of the insulating coating layer 462, and a film thickness of 25 μm and a heat resistant temperature of 150 ° C. are used as the material of the heat resistant insulating layers 455 and 456, respectively. PET was used. In the third toilet seat heater 450, a PI winding coating having a film thickness of 35 to 40 μm and a heat resistant temperature of 350 ° C. is used as the material for the insulating coating layer 462, and a film thickness of 3 to 6 μm and a heat resistant temperature are used as the material for the heat resistant insulating layers 455 and 456, respectively. A 90 ° C. acrylic resin was used.

  For the first toilet seat heater 450, the temperature of the heating wire 463a was 162.3 ° C., which is lower than the heat resistance temperature 260 ° C. of the insulating coating layer 462 made of PFA. For the second toilet seat heater 450, the temperature of the heating wire 463a was 155.4 ° C., which is lower than the heat resistance temperature 350 ° C. of the insulating coating layer 462 made of PI. For the third toilet seat heater 450, the temperature of the heating wire 463a was 125.7 ° C., which was lower than the heat resistance temperature 350 ° C. of the insulating coating layer 462 made of PI.

  From these results, it was found that not only PFA but also other resins such as PI can be used as the material of the insulating coating layer 462.

(1-k) Connection Method Between Linear Heater 460 and Lead Wire 470 FIG. 15 is a diagram illustrating a connection method between the linear heater 460 and the lead wire 470. FIG. 16 is a cross-sectional view of a connection portion between the linear heater 460 and the lead wire 470. FIG. 17 is a diagram illustrating a heat caulking method.

  As shown in FIGS. 15 and 16, the core wire of the lead wire 470 is connected to the terminal 471. The terminal 471 is bent into a U shape, and the bent tip of the linear heater 460 is inserted into the U-shaped bent portion of the terminal 471.

In this state, as shown in FIG. 17, the U-shaped bent portion of the terminal 471 is connected to the pair of electrodes EL1.
, EL2. A current is supplied from the transformer TS to the terminal 471 and the linear heater 460 through the electrodes EL1 and EL2 while pressing the U-shaped bent portion of the terminal 471 with the pair of electrodes EL1 and EL2. Thereby, as shown in FIG. 16, the insulating coating layer 462 and the enamel layer 463b of the linear heater 460 are melted. As a result, the heating wire 463a of the linear heater 460 contacts the terminal 471 at the contact point 463C.

  As shown in FIG. 15, a heat-resistant sheet 480 made of a polyimide thin film having a thickness of 12 μm, for example, is wound around the connection portion 475 between the terminal 471 of the lead wire 470 and the linear heater 460 two or three times. Furthermore, the connection part 475 between the terminal 471 of the lead wire 470 and the linear heater 460 is covered with a silicone resin and sandwiched between the metal foils 451 and 453 of FIGS.

  Thus, the heat of the heating wire 463a of the linear heater 460 is conducted to the metal foils 451 and 453 and the terminal 471 of the lead wire 470. Thereby, local overheating and disconnection of the heating wire 463a are prevented, and the heat uniformity of the toilet seat heater 450 is ensured.

  Further, the connecting portion 475 between the heating wire 463a of the linear heater 460 and the terminal 471 of the lead wire 470 has a double insulation structure of the heat-resistant sheet 480 and silicone resin. In this case, the heat of the connecting portion 475 is conducted to the metal foils 451 and 453 of the toilet seat heater 450 through the heat-resistant sheet 480 and the silicone resin. Thereby, local overheating and disconnection of the heating wire 463a are prevented while ensuring sufficient insulation.

  Furthermore, since the heating wire 463a of the linear heater 460 and the terminal 471 of the lead wire 470 are connected by thermal caulking, a thin and reliable electrical connection is realized. Further, since the heating wire 463a is prevented from floating, local overheating and disconnection of the heating wire 463a are prevented.

  In order to ensure the safety of the toilet seat 400, the toilet seat device 110 includes two safety circuits. One safety circuit is connected between one lead wire 470 of the toilet seat heater 450 and the toilet seat heater breakdown detection circuit inside the printed circuit board 230, and the other safety circuit is connected to both lead wires of the toilet seat heater 450. It is connected between 470 and the toilet seat heater disconnection detection circuit. Both safety circuits are used to prevent electric shock of the user when an abnormality occurs in the toilet seat heater 402.

  The toilet seat heater dielectric breakdown detection circuit detects that a current flows between the toilet seat heater 450 and the metal foil 451 when the insulating coating layer 462 is melted when the toilet seat heater 450 abnormally generates heat. The toilet seat heater disconnection detection circuit detects that the voltage waveform generated at both ends of the toilet seat heater 450 is not generated when the toilet seat heater 450 is disconnected. The heater driving unit 402 energizes the toilet seat heater 450 only when both of the two safety circuits detect a normal state.

(1-1) Connecting method of toilet seat heater and electric load provided to various functional units The main body 200 is provided with a hot water heating unit 1000, a drying unit 1100, a room heating unit 1200, etc. as functional units. Each of the various functional units incorporates a hot water heater 1020, a drying heater 1120, and a room heater 1220, and each heater is also configured to function as a power load.

FIG. 19 shows a connection method between the toilet seat heater 450 and the hot water heater 1020 of the hot water heating unit 1000. The toilet seat heater 450 and the hot water heater 1020 are driven by the heater driving unit 402 with the toilet seat heater 450 and the hot water heater 1020 connected in series via the series / parallel switching unit 1300, and the toilet seat heater 450 and the hot water heater. A state in which the toilet seat heater driving unit 402 and the hot water heater driving unit 1020 are respectively driven in parallel with 1020 can be selected. Toilet seat heater 450 is rated for an input of 1200 W, but when the initial ambient temperature is room temperature, the resistance value of linear heater 460 is low, so an inrush current flows, and the heater input reaches about 1400 W and reaches the rated value. Although greatly exceeding, inrush current can be suppressed by connecting the hot water heater 1020 which is another electric power load to the toilet seat heater 450 in series by a series parallel switching unit.

  When connected in series with the hot water heater 1020, the human body is detected by the entrance detection sensor 600 and power is supplied to the toilet seat heater 450 connected in series with the hot water heater 1020. The hot water heater is connected to the water circuit system. After the preheating operation of the water circuit system is completed, the hot water heater 1020 connected in series to the toilet seat heater 450 is directly connected to the toilet seat heater 450 and the toilet seat heater driving unit 402 by the series / parallel switching unit 1300, By directly supplying electric power to the heater 402, a large current is input to the toilet seat heater 450 after the toilet seat heater 450 is sufficiently heated, so that an inrush current to the toilet seat heater 450 can be suppressed.

  Next, regarding the specific configuration of the series-parallel unit 1300, as shown in FIG. 20, an electromagnetic relay A1310 and an electromagnetic relay B1320 are arranged, and the electromagnetic relay A1310 is inserted into one line of the toilet seat heater 450 wiring, and both sides of the hot water heater 1020 are placed. By switching the series and parallel in the electromagnetic relay A 1310 and the electromagnetic relay B 1320, the toilet seat heater 450 and the hot water heater 1020 can be switched between a single operation parallel connection and an operation connected in series.

(1-m) Operation of Toilet Seat Heater 450 Next, the operation of the toilet seat heater 450 will be described. When a constant voltage is applied between the heater start end portion 460a and the heater end portion 460b of the toilet seat heater 450, a current flows through the internal heating line 463a, and the heating line 463a generates heat. At this time, the generated heat is conducted from the heating wire 463a to the seating surface 410U of the upper toilet seat casing 410 through the enamel layer 463b and the metal foils 451 and 453.

  In the linear heater 460, since the insulating coating layer 462 is formed of PFA having a heat resistance of about 260 ° C., even if the thickness of the insulating coating layer 462 is as thin as 0.1 to 0.15 mm, for example, the heating wire 463a It is possible to prevent the enamel layer 463b from being destroyed even at a rapid temperature rise to 100 to 150 ° C. Therefore, the temperature of the seating surface 410U can be raised rapidly by rapidly advancing the heat conduction from the linear heater 460 to the seating surface 410U.

  In this case, it takes a short time of 5 to 6 seconds from the start of energization to the linear heater 460, for example, until the user enters the toilet room and sits on the seating surface 410U. It takes less than 7-8 seconds. Therefore, even if the energization detection sensor 600 detects that the user has entered the toilet room and at the same time the energization of the linear heater 460 is started, the seating surface 410U has a sufficiently optimum temperature until the user is seated. Can be reached.

  Further, the inner region G3 and the outer region G1 of the seating surface 410U in FIG. 6 have higher heat dissipation than the central region G2. In the present embodiment, the linear heaters 460 are arranged more densely in the inner region G3 and the outer region G1 than in the central region G2. Therefore, the temperature unevenness and the cold feeling are not felt at the moment when the user is seated on the seating surface 410U.

  On the other hand, the linear heater 460 is as long as about 10 m in total length, and rapidly expands as the heating wire 463a rapidly rises. As a result, the linear heater 460 expands in the length direction. In addition, when the energization is stopped, the temperature of the heating wire 463a is decreased and returns to the original length due to contraction. That is, thermal stress strain due to thermal expansion and contraction is repeatedly formed on the heating wire 463a.

  When the adhesion between the linear heater 460 and the metal foils 451 and 453 is weak, or when a gap is formed between the linear heater 460 and the seating surface 410U, the entire thermal stress strain is at the most easily moved portion of them. concentrate. As a result, a relatively strong bending / extending motion occurs in the linear heater 460, and damage to the linear heater 460 such as breakage of the heating wire 463a occurs due to accumulation of stress fatigue.

  In this example, since a plurality of bent portions are formed as thermal stress buffering portions in the linear heater 460, these bent portions finely disperse the entire thermal stress strain, and the bent portion exhibits thermal stress strain. Also acts to absorb. Therefore, the thermal stress at the bent portion is extremely small, and as a result, only slight bending and stretching occur. As a result, the heating wire 463a is not broken, and the life and durability of the linear heater 460 are improved.

  In addition, in the inner region G3 and the outer region G1 of the seating surface 410U with relatively large heat dissipation, the interval between the linear heaters 460 may be increased and the number of bent portions may be reduced as compared with the central region G2. .

  As described above, the overall length of the linear heater 460 is as long as approximately 10 m, and a bent portion is formed in the linear heater 460. Therefore, it is necessary to maintain and fix the arrangement of the linear heaters 460 when the linear heaters 460 are mounted on the seating surface 410U. A unitized toilet seat heater 450 is configured by closely attaching the linear heater 460 to the metal foils 451 and 453 in a state where the linear heater 460 is sandwiched between the metal foils 451 and 453. Therefore, the linear heater 460 can be bonded to the seating surface 410U in a state where the arrangement of the linear heaters 460 is firmly maintained.

  Further, since the linear heater 460 is sandwiched between the metal foils 451 and 453, the metal foils 451 and 453 perform heat distribution evenly. Thereby, it can prevent that the linear heater 460 heats up. In addition, the seating surface 410U is soaked and the toilet seat heater 450 is prevented from being damaged.

(1-n) Energization Sequence of Toilet Seat Device 110 The driving control of the toilet seat heater 450 is performed by changing the power for driving the toilet seat heater 450 to three.

  For example, when the temperature of the toilet seat 400 is raised with a first temperature gradient, the heater driver 402 in FIG. 2 drives the toilet seat heater 450 with about 1200 W of power (1200 W drive).

  As described above, the resistance value of the toilet seat heater 450 is 0.833 Ω / m, and the total length is 10 m. Therefore, the resistance value of the toilet seat heater 450 is 8.33Ω. When AC 100 V is applied to the toilet seat heater 450 having this resistance value, power of (100 V × 100 V) ÷ 8.33Ω = 1200 W is generated. That is, 1200 W of electric power is generated by passing a current through the toilet seat heater 450 over the entire period of the AC power supply.

  When the temperature of the toilet seat 400 is raised at a second temperature gradient that is slightly gentler than the first temperature gradient, the heater driving unit 402 drives the toilet seat heater 450 with about 600 W of power (600 W drive). Further, when the temperature of the toilet seat 400 is kept constant, the heater driving unit 402 drives the toilet seat heater 450 with about 50 W of power (low power driving). Note that low power driving means driving the toilet seat heater 450 with sufficiently low power (for example, power in the range of 0 W to 50 W) compared to 1200 W driving and 600 W driving.

  Switching between 1200 W driving, 600 W driving, and low power driving is performed by the energization rate switching circuit of the control unit 90 controlling energization from the heater driving unit 402 to the toilet seat heater 450.

  An AC current is supplied to the heater driving unit 402 from a power supply circuit (not shown). Therefore, the heater drive unit 402 causes the alternating current supplied based on the energization control signal provided from the energization rate switching circuit to flow through the toilet seat heater 450.

  FIG. 18 is a diagram illustrating a driving example of the toilet seat heater 450 and a change in the surface temperature of the toilet seat 400.

  FIG. 18 shows a graph showing the relationship between the surface temperature of the toilet seat 400 and the time, and a graph showing the relationship between the energization rate and the time when the toilet seat heater 450 is driven. The horizontal axis of these two graphs is a common time axis.

  In this example, it is assumed that the user turns on the heating function in advance and sets the toilet seat set temperature high (38 ° C.).

  When the room temperature such as in winter is lower than the standby temperature of 18 ° C., the control unit 90 (FIG. 2) adjusts the temperature of the toilet seat 400 so that the temperature becomes 18 ° C. As described above, the controller 90 controls the toilet seat heater 450 so that the surface temperature of the toilet seat 400 is constant at 18 ° C. during the waiting period D1 until the user's entrance is detected by the entrance detection sensor 600. Low power drive is performed.

  When the entry detection sensor 600 detects entry of the user at time t1, the control unit 90 performs 600 W driving during the inrush current reduction period D2. This 600 W drive is performed in order to sufficiently reduce the inrush current. In this case, the surface temperature of the toilet seat 400 is raised with a slightly gentle second temperature gradient.

  As for the suppression of the inrush current, the hot water heater 1020 and the series / parallel switching unit 1300 may be connected in series only at the start of energization to suppress the inrush current. When connected in series with the hot water heater 1020, the human body is detected by the room detection sensor 600 and power is supplied to the toilet seat heater 450 connected in series with the hot water heater 1020. The hot water heater 1020 is connected to the water circuit system. After the remaining heat operation of the water circuit system is completed, the connection of the hot water heater 1020 connected in series to the toilet seat heater 450 is switched to the connection in which power is directly supplied to the toilet seat heater 450 by the series / parallel switching unit 1300. Therefore, the inrush current to the toilet seat heater 450 can be suppressed.

  Thereafter, the control unit 90 starts 1200W driving of the toilet seat heater 450 at time t2 after the rush current reduction period D2 has elapsed, and continues 1200W driving of the toilet seat heater 450 during the first temperature rising period D3. In this case, the surface temperature of the toilet seat 400 is increased with the first temperature gradient described above.

  Here, the surface temperature of the toilet seat 400 is rapidly increased. The toilet seat heater 450 is driven at 1200 W until the surface temperature of the toilet seat 400 reaches a predetermined temperature (for example, 30 ° C.). Of course, the predetermined temperature may be a temperature set as the heating temperature. However, the predetermined temperature is not a temperature sufficiently increased to the heating temperature, and even when the predetermined temperature is lower than the predetermined temperature, when the user is seated. It may be the lowest limit temperature (limit temperature) that does not cause an unpleasant feeling of being cold. This limit temperature has been found to be about 29 ° C. by subject experiments conducted by the inventors.

Thus, in the first temperature increase period D3, the surface temperature of the toilet seat 400 is rapidly increased to a predetermined temperature by 1200 W driving. Thus, the user can sit on the toilet seat 400 without feeling that the toilet seat 400 is cold.

  Further, the toilet seat heater 450 and the hot water heater 1020 can be selected to be connected in series by the series / parallel switching unit 1300. Toilet seat heater 450 is rated for an input of 1200 W, but when the initial temperature is turned on and the ambient temperature is at room temperature, the resistance value of linear heater 460 is low, so an inrush current may flow and the heater input may reach about 1400 W However, inrush current can be suppressed by connecting the toilet seat heater 450 and another power load in series. When connected in series with the hot water heater 1020, the human body is detected and power is applied to the toilet seat heater 450, and the warming operation of the water circuit system is started to start the temperature increase of the toilet seat, and then the toilet seat heater 450 is connected in series. The inrush current to the toilet seat heater 450 can be suppressed by switching the connection of the connected hot water heater 1020 to a parallel connection and directly supplying power.

  After the temperature rise of the toilet seat is completed and seating of the human body is detected, preheating to the hot water heater 1020 (described in the description of the operation after sitting) is performed. In this way, heat is supplied to the entire hot water heater by performing energization to the hot water heater 1020 at the same time as preventing the inrush current of the toilet seat heater 450 and preheating at the time of sitting twice, that is, two-stage preheating. It is difficult to cool down and can be preheated enough. Of course, for energization for preventing inrush current to the toilet seat heater 450, priority is given to the control of the toilet seat heater 450, and sufficient energization and temperature rise as preheating to the hot water heater 1020 may be performed at the time of sitting.

  In addition, as described above, when the surface temperature of the toilet seat 400 is rapidly increased, an overshoot occurs in the temperature change. However, in this example, when the surface temperature of the toilet seat 400 reaches a predetermined temperature, the 1200 W drive of the toilet seat heater 450 is switched to the 600 W drive. Therefore, even when the change in the surface temperature of the toilet seat 400 overshoots, the surface temperature does not exceed the toilet seat set temperature. As a result, the user is prevented from feeling the toilet seat 400 hot when seated.

  Subsequently, the control unit 90 starts 600W driving of the toilet seat heater 450 at time t3 after the elapse of the first temperature rising period D3, and continues 600 W driving of the toilet seat heater 450 during the second temperature rising period D4. To do. In this case, the surface temperature of the toilet seat 400 is raised with the second temperature gradient described above.

  The 600 W drive of the toilet seat heater 450 is performed until the surface temperature of the toilet seat 400 reaches the toilet seat set temperature (38 ° C.).

  The second temperature gradient is gentler than the first temperature gradient. This prevents a large overshoot from occurring in the change in the surface temperature of the toilet seat 400.

  The controller 90 starts low-power driving of the toilet seat heater 450 at time t4 after the elapse of the second temperature rising period D4, and continues low-power driving of the toilet seat heater 450 during the first maintenance period D5. Thereby, the surface temperature of the toilet seat 400 is constant at the toilet seat set temperature.

  When the seating sensor 290 detects that the user is seated on the toilet seat 400 at time t5, the controller 90 reduces the energization rate of the low-power drive, and the surface of the toilet seat 400 during the first seating period D6. The low-power drive of the toilet seat heater 450 is continued so that the temperature maintains the toilet seat set temperature. In this example, the first seating period D6 is set to about 10 minutes.

In addition, the control unit 90 further reduces the energization rate of the low power drive at time t6 after the first seating period D6 has elapsed, and the surface temperature of the toilet seat 400 during the second seating period D7 is the toilet seat set temperature. The low-power drive of the toilet seat heater 450 is continued so that the temperature is lowered to a slightly lower temperature (36 ° C.). In this example, the second seating period D7 is set to about 2 minutes.

  At time t7 after the elapse of the second seating period D7, the control unit 90 further decreases the energization rate of the low power drive, and the surface temperature of the toilet seat 400 is lower than the toilet seat set temperature during the second maintenance period D8. The low-power drive of the toilet seat heater 450 is continued so as to be constant at a slightly low temperature (36 ° C.). In the following description, the surface temperature of the toilet seat 400 that is maintained constant in the second maintenance period D8, that is, a temperature slightly lower than the toilet seat set temperature is referred to as a maintenance temperature.

  Thus, in this example, after the user is seated on the toilet seat 400, the controller 90 gradually reduces the surface temperature of the toilet seat 400. This prevents the user from getting burned at low temperatures.

  When it is detected by the seating sensor 290 that the user has left the toilet seat 400 at time t8, the controller 90 stops driving the toilet seat heater 450 during the stop period D9. Thereby, the surface temperature of the toilet seat 400 decreases.

  The controller 90 starts the low-power driving of the toilet seat heater 450 again at time t9 when the surface temperature of the toilet seat 400 reaches 18 ° C., and waits for the surface temperature of the toilet seat 400 to be constant at 18 ° C. The low power driving of the toilet seat heater 450 is maintained during D10.

  Thus, when the temperature gradient becomes gradually gentle, the overshoot caused by the temperature change of the toilet seat 400 can be sufficiently reduced.

  In this example, after the user sits on the toilet seat 400, the surface temperature of the toilet seat 400 is gradually decreased by adjusting the power used to drive the toilet seat heater 450. The user may stop when sitting on the toilet seat 400. Even in this case, it is possible to prevent the user from getting burned at a low temperature.

  As described above, in this example, it has been described that the driving of the toilet seat heater 450 is stopped when it is detected that the user has left the toilet seat 400 at time t8, but the driving of the toilet seat heater 450 is stopped. May be performed after a lapse of a certain time (for example, 1 minute) from time t8 when it is detected that the user has left the toilet seat 400. In this case, the surface temperature of the toilet seat 400 does not decrease even when the user once again leaves the toilet seat 400 and again feels comfortable and sits on the toilet seat 400 again. As a result, the user can comfortably sit on the toilet seat 400.

  The energization state of the toilet seat heater 450 during 1200 W drive, 600 W drive, and low power drive will be described together with the energization control signal of the energization rate switching circuit.

  In the following description, the energization rate refers to the ratio of the time during which an alternating current is passed through the toilet seat heater 450 for one cycle of the alternating current.

  FIG. 21A is a waveform diagram of a current flowing through the toilet seat heater 450 during 1200 W drive, and FIG. 21B is a waveform diagram of an energization control signal supplied from the energization rate switching circuit to the heater drive unit 402 during 1200 W drive.

As shown in FIG. 21B, the energization control signal at the time of 1200 W driving is always logic “1”. When the energization control signal is logic “1”, the heater drive unit 402 causes an alternating current supplied from the power supply circuit to flow through the toilet seat heater 450 (FIG. 21A, bold line portion). Thereby, an alternating current flows through the toilet seat heater 450 over the entire period. As a result, the toilet seat heater 450 is about 12
Driven with 00W power.

  FIG. 22A is a waveform diagram of a current flowing through the toilet seat heater 450 during 600 W drive, and FIG. 22B is a waveform diagram of an energization control signal supplied from the energization rate switching circuit to the heater drive unit 402 during 600 W drive.

  As shown in FIG. 22B, the energization control signal at the time of 600 W driving is composed of pulses having the same cycle as the alternating current supplied to the heater driving unit 402. The duty ratio of the pulse is set to 50%.

  When the energization control signal is logic “1”, the heater drive unit 402 causes an alternating current supplied from the power supply circuit to flow through the toilet seat heater 450 (FIG. 22A, bold line portion). Thereby, an alternating current flows through the toilet seat heater 450 during a half cycle. As a result, the toilet seat heater 450 is driven with about 600 W of electric power.

  FIG. 23A is a waveform diagram of a current flowing through the toilet seat heater 450 during low power driving, and FIG. 23B is a waveform diagram of an energization control signal supplied from the energization rate switching circuit to the heater driving unit 402 during low power driving. .

  As shown in FIG. 23 (b), the energization control signal at the time of low power driving is composed of pulses having the same cycle as the alternating current supplied to the heater driving unit 402. The duty ratio of the pulse is set to be smaller than 50% (for example, about several percent).

  The heater drive unit 402 causes an alternating current supplied from the power supply circuit to flow through the toilet seat heater 450 when the energization control signal is logic “1” (FIG. 23A, bold line portion). In each cycle, an alternating current flows through the toilet seat heater 450 for a period corresponding to the pulse width. As a result, the toilet seat heater 450 is driven with electric power of about 50 W, for example.

  In addition to the above, when the temperature of the toilet seat 400 is lowered, or when the heating function of the toilet seat device 110 is turned off, the energization rate switching circuit does not give an energization control signal to the heater drive unit 402 (energization control). Set the signal to logic "0"). Thereby, the heater driving unit 402 does not drive the toilet seat heater 450.

  Here, generally, when the current supplied to the electronic device has a harmonic component, noise is generated. In this example, when 1200 W drive or 600 W drive of the toilet seat heater 450 is performed as described above, the current supplied to the toilet seat heater 450 changes so as to draw a sine curve. However, the generation of noise is sufficiently reduced.

  Further, when the toilet seat heater 450 is driven at low power, the current supplied to the toilet seat heater 450 has a harmonic component, but the magnitude of the current is much smaller than that at the time of 1200 W driving and 600 W driving, so Occurrence is sufficiently reduced.

  As described above, in the present embodiment, toilet seat heater 450 is driven by electric power of 1200 W, 600 W, and about 50 W, but toilet seat heater 450 may be driven by other electric power.

  For example, when an alternating current is passed through the toilet seat heater 450 for a period of half a cycle, the timing for flowing the alternating current is set at intervals of a predetermined cycle such as two cycles or three cycles. As a result, the toilet seat heater 450 can be driven with power of a magnitude different from 1200 W, 600 W, and about 50 W while sufficiently preventing the generation of noise.

  In this example, the control unit 90 supplies current to the toilet seat heater 450 when the energization control signal is logic “1”, and supplies current to the toilet seat heater 450 when the energization control signal is logic “0”. Although it is stopped, the supply of current to the toilet seat heater 450 is stopped when the energization control signal is logic “1”, and the current is supplied to the toilet seat heater 450 when the energization control signal is logic “0”. Good.

  In addition, since the on / off of the toilet seat heater 450 is controlled by time, the temperature of the toilet seat 400 does not exceed the predetermined value or does not reach the predetermined value when the time measurement is shifted. Therefore, the control unit 90 measures the time during which the toilet seat 400 is turned on using two measurement sources so that the time measurement does not deviate. As one measurement source, the on-time of the toilet seat heater 450 is measured by an oscillator that defines the effective speed of the program of the control unit 90, and another measurement source is used as the reference of the toilet seat heater 450 based on the cycle of the AC voltage. Measure the on time. When at least one of these measured values exceeds the specified time, the process proceeds to the next energization pattern.

  In particular, excessive temperature rise is reliably prevented by accurately measuring the time during which 1200 W is energized in the toilet seat. This further improves the safety of the device. Although a method for improving the measurement accuracy by providing a plurality of measurement sources has been described here, it is a method for measuring the time during which the toilet seat heater 450 is fully energized and forcibly interrupting or restricting the energization of the heater. However, the same effect can be obtained.

(1-0) Effects on Toilet Seat Device 110 In the toilet seat device 110 of this example, heat generated by the heating wire 463a of the linear heater 460 is transmitted to the upper toilet seat casing 410 via the enamel layer 463b and the insulating coating layer 462. Is done. Thereby, the temperature of the seating surface 410U rises.

  Here, the enamel layer 463b has sufficient electrical insulation. Therefore, even if the thickness of the enamel layer 463b is reduced, the heating wire 463a and the upper toilet seat casing 410 can be sufficiently insulated. Thereby, the thickness of the insulating coating layer 462 can also be reduced.

  Therefore, in the toilet seat device 110, the thickness of the enamel layer 463b and the insulating coating layer 462 can be reduced while reliably insulating the heating wire 463a and the aluminum plate 413 of the upper toilet seat casing 410. In this case, the heat capacities of the enamel layer 463b and the insulating coating layer 462 can be reduced, so that the heat generated by the heating wire 463a can be efficiently transmitted to the seating surface 410U.

  In the toilet seat device 110, an aluminum plate 413 is used for the upper toilet seat casing 410. Therefore, the heat generated by the heating wire 463a can be transmitted to the seating surface 410U more efficiently.

  As a result, it is possible to quickly raise the temperature of the seating surface 410U while reliably insulating the heating wire 463a and the aluminum plate 413 of the upper toilet seat casing 410.

  Moreover, since the heat of the heating wire 463a can be efficiently transmitted to the seating surface 410U, the amount of heat generated by the heating wire 463a can be suppressed. Thereby, durability of the enamel layer 463b and the insulating coating layer 462 is improved. As a result, the reliability of the toilet seat device 110 is improved.

  Moreover, since the thickness of the enamel layer 463b and the insulating coating layer 462 for insulating the heating wire 463a and the aluminum plate 413 of the upper toilet seat casing 410 can be reduced, the weight of the toilet seat device 110 can be reduced.

  In addition, since the heating wire 463a is covered with the enamel layer 463b having sufficient heat resistance, a material having low heat resistance can be used for the insulating coating layer 462. Thereby, the product cost of the toilet seat apparatus 110 can be reduced reliably.

  Further, when the enamel layer 463b is formed of polyester imide or polyamide imide, the polyester imide and polyamide imide are excellent in electrical insulation and heat resistance. Therefore, the heating wire 463a and the aluminum plate 413 of the upper toilet seat casing 410 are more connected. It is possible to quickly raise the temperature of the seating surface 410U while ensuring insulation.

  Furthermore, when the sum of the thickness of the enamel layer 463b and the thickness of the insulating coating layer 462 is 0.4 mm or less, the seating surface 410U is reliably insulated from the heating wire 463a and the aluminum plate 413 of the upper toilet seat casing 410. The temperature can be raised more quickly.

  In particular, when the sum of the thickness of the enamel layer 463b and the thickness of the insulating coating layer 462 is 0.2 mm or less, the temperature of the seating surface 410U can be raised more rapidly.

  Further, since the insulating coating layer 462 is made of a material having lower heat resistance than the enamel layer 463b, the product cost of the toilet seat device 110 can be sufficiently reduced.

  Further, since the linear heater 460 is provided so as to be sandwiched between the metal foil 451 and the metal foil 453 provided on the back surface side of the upper toilet seat casing 410, the heat generated by the heating wire 463a is the metal foils 451 and 453. Is transmitted efficiently. One surface of the metal foil 451 is attached to the back surface of the upper toilet seat casing 410 and one surface of the metal foil 453 is attached to the other surface of the metal foil 451. Thereby, the heat transmitted from the heating wire 463a to the metal foils 451 and 453 can be efficiently transmitted to the entire back surface of the upper toilet seat casing 410. Thereby, the entire seating surface 410U can be heated uniformly.

  In particular, when the metal foils 451 and 453 are made of aluminum, the heat generated by the heating wire 463a can be quickly transmitted by the upper toilet seat casing 410.

  Further, when the heat-resistant insulating layer 455 is provided between the back surface of the upper toilet seat casing 410 and the metal foil 451, the heat-resistant insulating layer 455 can more reliably insulate the heating wire 463a and the aluminum plate 413 of the upper toilet seat casing 410. Can do.

  In addition, since the connecting portion 475 between the lead wire 470 and the linear heater 460 is provided between the metal foil 451 and the metal foil 453, the heat generation at the connecting portion 475 between the lead wire 470 and the linear heater 460 is generated by the metal foil 451. , 453. Thereby, the temperature of the seating surface 410U can be raised more rapidly.

  Moreover, since the connection part 475 is coat | covered with the heat-resistant sheet | seat 480, the connection part 475 and the upper toilet seat casing 410 can be insulated reliably.

  Furthermore, since the connection part 475 is coat | covered with a silicone resin, the connection part 475 can be reliably waterproofed.

  Since the high tensile strength heater wire made of an Ag—Cu alloy is used as the heating wire 463a of the linear heater 460, the diameter of the heating wire 463a can be reduced while ensuring the strength of the heating wire 463a. Accordingly, the long heating wires 463a can be arranged at a high density in a narrow space. As a result, the temperature increase rate of the seating surface 410U can be improved.

<2> Operation Sequence of Each Part of Sanitary Washing Apparatus 100 FIG. 24 is a timing chart showing an operation sequence of each part of the sanitary washing apparatus 100.

  Here, the switching valve 13 for human bodies in FIG. 3 switches the supply path of the washing water when the switching valve motor 13m rotates.

  Here, the rotational position of the switching valve motor 13 mm for ejecting the cleaning water from the buttocks nozzle 21 is referred to as a butting cleaning position, and the rotational position of the switching valve motor 13 m for ejecting the cleaning water from the bidet nozzle 22 is referred to as a bidet cleaning position. Call. Further, the rotation position of the switching valve motor 13m for ejecting the cleaning water from the nozzle cleaning nozzle 23 before the human body cleaning is called a pre-cleaning position, and the switching valve motor for ejecting the cleaning water from the nozzle cleaning nozzle 23 after the human body cleaning. The rotational position of 13 m is referred to as a post-cleaning position, and the rotational position of the switching valve motor 13 m for preliminarily heating the cleaning water while discharging the cleaning water from the nozzle cleaning nozzle 23 is referred to as a preheat position. Furthermore, the rotational position of the switching valve motor 13m that does not supply cleaning water to the buttocks nozzle 21, bidet nozzle 22, and nozzle cleaning nozzle 23 is referred to as a stop (standby) position. In this example, the pre-cleaning position, the post-cleaning position, and the preheat position are the same.

  When the user sits on the toilet seat 400 at time t11, the controller 90 rotates the switching valve motor 13m to the preheat position, opens the water stop solenoid valve 7, and operates the pump 11 with a weak driving force. Accordingly, the cleaning water is discharged from the nozzle cleaning nozzle 23 through the heat exchanger 9, the pump 11, and the human body switching valve 13.

  When there is a possibility that water has not been passed through the water circuit as in the first energization of the main body 200, the time until the water circuit becomes full between time t11 and time t12 ( For about 3 seconds), the heat exchanger 9 is not energized.

  A period from time t12 to time t13 is provided to prevent the heat exchanger 9 from being blown. Thereafter, when the flow rate measured by the flow sensor 8 reaches a predetermined value at time t13, the control unit 90 turns on the heat exchanger 9. Thereby, the washing water is heated.

  When the temperature rise of the cleaning water is completed, at time t14, the control unit 90 rotates the switching valve motor 13m to the stop position, closes the water stop electromagnetic valve 7, and turns off the pump 11 and the heat exchanger 9.

  When the user depresses the buttocks switch 312 at time t15, the control unit 90 rotates the switching valve motor 13m to the pre-cleaning position, opens the water stop solenoid valve 7, and drives the pump 11 at a predetermined pre-cleaning time. Operate with. Thereby, the washing water is ejected from the nozzle washing nozzle 23 through the heat exchanger 9, the pump 11 and the human body switching valve 13. When the flow rate measured by the flow rate sensor 8 reaches a predetermined value at time t16, the control unit 90 turns on the heat exchanger 9. Thereby, the washing water is heated.

  At time t17, the control unit 90 rotates the switching valve motor 13m to the buttocks washing position, closes the water stop electromagnetic valve 7, and turns off the pump 11 and the heat exchanger 9.

  At time t18, the control unit 90 starts the protrusion of the buttocks nozzle 21 from the stop position by the nozzle drive motor 20m. When the buttocks nozzle 21 moves from the nozzle drive motor 20m to the standard position at time t19, the control unit 90 opens the water stop solenoid valve 7 and drives the pump 11 (set value) corresponding to the set cleaning strength. Operate with.

  When the flow rate measured by the flow rate sensor 8 reaches a predetermined value at time t20, the control unit 90 turns on the heat exchanger 9. Accordingly, the cleaning water is heated, and the heated cleaning water is ejected to the user's local area. The period from the time point t21 to the time point t22 is a period provided for eliminating the water pressure inside the nozzle portion 20 after the water stop solenoid valve 7 is closed. This period is set to about 0.5 seconds, for example.

  When the user depresses the stop switch 311 at time t21, the control unit 90 rotates the switching valve motor 13m toward the stop position, closes the water stop electromagnetic valve 7, and turns off the pump 11 and the heat exchanger 9. . Thereby, human body washing | cleaning is complete | finished.

  At time t22, the control unit 90 moves the butt nozzle 21 from the standard position toward the stop position by the nozzle drive motor 20m.

  When the switching valve motor 13m rotates to the stop position at time t23, the control unit 90 rotates the switching valve motor 13m to the post-cleaning position, opens the water stop solenoid valve 7, and operates the pump 11 with a weak driving force. Thereby, the washing water is ejected from the nozzle washing nozzle 23 through the heat exchanger 9, the pump 11 and the human body switching valve 13.

  When the flow rate measured by the flow rate sensor 8 reaches a predetermined value at time t24, the control unit 90 turns on the heat exchanger 9. Accordingly, the washing water is heated, and the butt nozzle 21 and the bidet nozzle 22 are washed with the heated washing water.

  At time t25, the control unit 90 rotates the switching valve motor 13m to the stop position, closes the water stop electromagnetic valve 7, and turns off the pump 11 and the heat exchanger 9.

<3> Operation Sequence when Using Toilet Device 1000 (3-a) When Entering Toilet Room When the user enters the toilet room, the user is detected by the entrance detection sensor 600. As a result, an entry detection signal is transmitted from the entry detection sensor 600 to the control unit 90 of the main body 200 by infrared rays.

  The room entry detection sensor 600 may continue to transmit the room entry detection signal to the control unit 90 of the main body unit 200 by infrared rays while detecting the user. However, in order to extend the battery life, the room entry detection sensor 600 may Once the entry detection signal is transmitted, it is not necessary to transmit the entry detection signal for a certain period of time.

  When receiving the entrance detection signal from the entrance detection sensor 600, the control unit 90 changes the lid 500 from the closed state to the open state by the toilet seat toilet lid opening / closing device.

  The controller 90 raises the temperature of the toilet seat 400 according to the pattern shown in FIG. Moreover, the control part 90 performs the operation | movement which prevents that a stool adheres to a toilet bowl surface by discharging water to the toilet bowl surface called toilet bowl pre-washing with the toilet nozzle 40. FIG.

  Moreover, the control part 90 illuminates the washing | cleaning water sprayed radially in order to raise a visual effect with the boy's small target display LED (light emitting diode) at the time of toilet pre-washing.

  The entrance detection sensor 600 used here detects the user entering the toilet reliably and at an early timing, and starts to raise the temperature of the toilet seat 400. Therefore, for example, even when the user enters the room without turning on the main illumination of the toilet at night, the lid 500 of the sanitary washing device 100 opens at a very early timing.

  Then, at the moment when the room entry detection sensor 600 detects the human body, the boy's small target display LED is turned on. Thereby, the light leaking from the toilet bowl 700 together with the light inside the toilet bowl 700 gently illuminates the periphery of the toilet bowl 700. Thereby, the awakening of the sleeping user is suppressed. In addition, indirect lighting of the toilet with excellent safety is performed.

(3-b) For boys small use When the user operates a toilet seat opening / closing switch (not shown) of the remote control device 300, the control unit 90 changes the toilet seat 400 from the closed state to the open state by the toilet seat toilet lid opening / closing device. To do. In addition, the control unit 90 stops energizing the toilet seat heater 450 and turns off the toilet seat temperature adjustment lamp RA1. Thereby, energy saving property further improves. In addition, the boy's small target display LED is turned on. Here, the boy's small target display LED emits light to the boy's small target portion in the toilet 700.

  When the entrance detection signal is not received from the entrance detection sensor 600 for 5 minutes with the toilet seat 400 and the lid 500 open, the controller 90 opens the toilet seat 400 and the lid 500 with the toilet seat toilet lid opening / closing device. To the closed state.

(3-c) During Seating and Defecation The control unit 90 measures the elapsed time from when the user is seated on the toilet seat 400 based on the seating detection signal from the seating sensor 610. Then, the temperature of the toilet seat 400 is increased by the heater driving unit 402 in the pattern shown in FIG.

  When the user sits on the toilet seat 400, the preheat shown in FIG. 24 is performed to warm the water circuit including the heat exchanger 9. As described above, when the washing water is not supplied to the heat exchanger 9, the control unit 90 turns off the heaters (for example, the sheathed heaters 91 and 92) disposed in the heat exchanger 9. Whether or not the washing water is supplied to the heat exchanger 9 is detected by the flow sensor 8. However, when the sheathed heaters 91 and 92 are turned on for the first time, water is not passed through the water circuit, and therefore the time until the water circuit becomes full (about 3 seconds) is determined by the flow sensor 8 at a predetermined flow rate. Even if detected, the sheathed heaters 91 and 92 are not energized. When the user is seated on the toilet seat 400, the controller 90 operates the deodorizing unit 220. While the user continues to sit on the toilet seat 400, the deodorizing unit 220 continues to operate for a maximum of 30 minutes. The air volume of the deodorizing unit 220 is switched to three stages. From the seating of the user to the start of cleaning, the air volume is set to “medium”, the air volume is set to “weak” during the cleaning, and the air volume is set to “strong” for 1 minute after the user leaves the seat.

(3-d) Human Body Washing When the user presses the back switch 312 or the bidet switch 313 of the remote control device 300, the control unit 90 performs the above pre-cleaning to warm the water circuit. Thereby, it is prevented that cold water is discharged to a user.

  When the temperature detected by the hot water temperature sensor 98 of the heat exchanger 9 continues the specified temperature (32 ° C.) for the specified time (3 seconds) or longer, the controller 90 ends the pre-cleaning. After completion of the pre-cleaning, the control unit 90 causes the buttocks nozzle 21 or the bidet nozzle 22 to protrude by the nozzle drive motor 20m with the water stop solenoid valve 7 closed. Thereby, it is prevented that the washing water is applied to the user when the buttocks nozzle 21 or the bidet nozzle 22 protrudes.

  After the posterior nozzle 21 or the bidet nozzle 22 reaches the standard position, the control unit 90 controls the pump 11 to perform human body washing with the water force (water amount) set by the user using the remote operation device 300. The maximum cleaning time is, for example, 5 minutes.

  When the user presses the stop switch 311 of the remote control device 300, the control unit 90 closes the water stop solenoid valve 7 and stores the buttocks nozzle 21 or the bidet nozzle 22 in the nozzle unit 20 by the nozzle drive motor 20m.

  Thereafter, the control unit 90 performs post-cleaning by the nozzle cleaning nozzle 23 in order to clean the nozzle unit 20.

  During cleaning by the nozzle unit 20, the control unit 90 operates the deodorizing unit 220 in a weak state. Thereby, deodorization in the toilet room is performed.

(3-e) At the time of disengagement When the seating sensor 610 no longer detects the seating of the user, the control unit 90 moves the butt nozzle 21 and the bidet nozzle 22 back and forth by the nozzle drive motor 20m in order to increase the visual effect. The nozzle unit 20 is cleaned by the nozzle cleaning nozzle 23. At this time, the controller 90 emphasizes the nozzle cleaning operation by turning on the boy's small target display LED.

  Moreover, the control part 90 operates the deodorizing unit 220 in a strong state for 1 minute after a user's leaving. Thereby, deodorization in a toilet room is performed strongly.

  Further, when the seating sensor 610 does not detect the seating of the user and the entrance detection sensor 600 does not detect the user for 3 minutes, the control unit 90 changes the lid 500 from the open state to the closed state by the toilet seat toilet lid opening / closing device. To do.

(3-f) When leaving the room When the entrance detection sensor 600 does not detect the user for a certain period of time, the control unit 90 closes the toilet seat 400 and the lid 500 with the toilet seat toilet lid opening / closing device. Further, one minute after the entrance detection sensor 600 no longer detects the user, the control unit 90 cuts off the energization of the toilet seat heater 450 by the heater drive unit 402. Thereby, a series of operation sequences of the toilet apparatus 1000 is completed.

<4> Correspondence between each constituent element of claim and each element of the embodiment Hereinafter, an example of correspondence between each constituent element of the claim and each element of the embodiment will be described. It is not limited to.

  In the above embodiment, the toilet seat 400 is an example of a toilet seat, the heating wire is an example of a toilet seat heater, the hot water heater unit, the deodorizing device, and the room heating are examples of various functional units. A portion that becomes a power load in various functions included in a system that is attached to the toilet device and is controlled in the power corresponds to an example of the power load. Other configuration examples of the electromagnetic relay and circuit switching are examples of the series / parallel switching means, and the room entry detection sensor 600 is an example of the human body detection means. The entrance detection sensor is configured separately from the remote controller and the toilet seat apparatus body, but is provided integrally with the remote controller or the toilet seat apparatus body so that the user's seating and entrance detection can be performed with different determination conditions. It is good also as a simple detection structure.

As each constituent element in the claims, various other elements having configurations or functions described in the claims can be used. Even if the heater of the drying unit 210, the heater of the room heating function, or the like is used as the power load in various functions associated with the toilet apparatus, the same effect can be obtained. As a function that can be used after sitting on the toilet seat, the heater of the hot water function, the heater of the drying unit 210, etc., the heater energization for preventing inrush current is preheated, which is convenient for the operation of the toilet seat device. . Room heating is effective when the room temperature is low.

  INDUSTRIAL APPLICABILITY The present invention can be used for a sanitary washing device for washing a local part of a human body.

1 is an external perspective view showing a sanitary washing device according to an embodiment of the present invention and a toilet device including the same. Schematic diagram showing the configuration of the toilet seat device Disassembled perspective view of toilet seat (A) is a top view of the toilet seat heater of the toilet seat part of a 1st example, (b) is an enlarged view of the area | region of (a). The top view of the toilet seat part of the 1st example C5-C5 sectional view of the toilet seat of FIG. (A) is a top view of the toilet seat heater of the toilet seat part of a 2nd example, (b) is an enlarged view of the area | region of (a). Plan view of toilet seat part of second example (A) is a top view of the toilet seat heater of the toilet seat part of a 3rd example, (b) is a partial expanded sectional view of (a). The top view of the toilet seat heater of the toilet seat part of the 4th example Sectional drawing which shows an example of the structure of the toilet seat heater attached to an upper toilet seat casing Sectional drawing which shows the other example of the structure of the toilet seat heater attached to an upper toilet seat casing Sectional drawing which shows the further another example of the structure of the toilet seat heater attached to an upper toilet seat casing The figure which shows the measurement result of the relationship between the coating thickness of a heating wire, and the temperature rise of each part of a toilet seat part Diagram showing connection method between linear heater and lead wire Sectional view of the connection between the linear heater and the lead wire Diagram showing heat caulking method The figure which shows the drive example of a toilet seat heater, and the change of the surface temperature of a toilet seat part The figure which shows the connection method of the toilet seat heater and the hot water heater of the hot water heating unit The figure which shows the concrete constitution of the serial parallel unit (A) is a waveform diagram of the current flowing through the toilet seat heater during 1200 W drive, and (b) is a waveform diagram of an energization control signal applied from the energization rate switching circuit to the heater drive unit during 1200 W drive. (A) is a waveform diagram of the current flowing through the toilet seat heater during 600 W drive, and (b) is a waveform diagram of an energization control signal applied from the energization rate switching circuit to the heater drive unit during 600 W drive. (A) is a waveform diagram of the current flowing through the toilet seat heater during low power driving, and (b) is a waveform diagram of an energization control signal applied from the energization rate switching circuit to the heater driving unit during low power driving. Timing chart showing operation sequence of each part of sanitary washing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 90 Control part 110 Toilet seat apparatus 200 Main body part 210 Drying unit 300 Remote operation apparatus 400 Toilet seat part 401 Temperature measurement part 402 Heater drive part 410 Upper toilet seat casing 420 Lower toilet seat casing 411 Surface decorative layer 412 Anodized layer 413 Aluminum plate 414 Paint film 450 Toilet seat Heater 451, 453 Metal foil 455, 456 Heat resistant insulation layer 460 Linear heater 462 Insulation coating layer 470 Lead wire 471 Terminal 475 Connection portion 480 Heat resistant sheet 500 Lid portion 600 Entrance detection sensor 610 Seating sensor 1000 Toilet device

Claims (5)

A toilet seat, a toilet seat main body that supports the toilet seat and is placed on the toilet, various functional units of the toilet seat device provided inside the toilet seat main body, and when the use of the toilet seat is detected, the seating surface of the toilet seat is A toilet seat heater that heats up and heats by electric power, and series / parallel switching means for selectively connecting the toilet seat heater and the power load provided in the various functional units in series or in parallel, A toilet seat device that is connected in series with the power load at the start of large power input to the toilet seat heater. 2. The toilet seat device according to claim 1, further comprising a hot water heater unit as various functional units, wherein the electric power load is a heater of the hot water heater unit. The series / parallel switching means switches the connection between the power load and the toilet seat heater in parallel before the start of large power input to the toilet seat heater and after the elapse of a predetermined time after the start of large power input, and drives each separately. The toilet seat device according to claim 1, wherein the toilet seat device is provided. The toilet seat device according to any one of claims 1 to 3, wherein the series-parallel switching device is configured by an electromagnetic relay. The toilet seat device according to any one of claims 1 to 4, further comprising a human body detection unit, and when the human body detection unit detects that a user has entered the toilet room, a large amount of electric power is started to be applied to the toilet seat heater.