JP2010029425A - Heated toilet seat and sanitary washer using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet seat having a heating function which prevents the failure of a heating element mounted on a sitting portion and achieves uniform heating distribution and the low cost. <P>SOLUTION: In a toilet seat heater 450U, by configuring toilet seat heaters 450L and 450R divided into right and left in a single current system, not only the cost is reduced by effectively utilizing a material used in first metallic foil 453 and second metallic foil 451, but also the toilet seat heater 450U is stuck to a sitting surface 410U easily and surely without sticking defects such as wrinkles and floating. As a result, not only the partial self-heating of a linear heating element 460 is prevented and the failure of the linear heating element 460 is prevented to substantially improve durability by the thermal stress buffering of mitigating and reducing thermal stress distortion due to the thermal expansion and contraction of the linear heating element 460, but also the temperature distribution characteristics of the sitting surface 410U are improved and comfortable heating is achieved by a relatively simple control configuration. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heated toilet seat and a sanitary washing device using the same.

  Conventionally, as shown in FIG. 16, this type of heated toilet seat has a horseshoe-shaped single sheet heating element 101 embedded in a seat portion of a synthetic horseshoe-shaped toilet seat. This sheet heating element 101 is a continuous wire having a substantially U-shaped cord-like heater 105 having an outer diameter of 1 mm or less having a fluororesin insulating film 104 between a horseshoe-shaped single metal foil sheet 102 and an adhesive tape 103. It is sandwiched between patterns.

  Actually, the resistance wire 106 made of seven 0.05 mm nickel chrome alloy wires in a twisted state is coated with ETFE (crosslinked ethylene-tetrafluoroethylene copolymer) as a fluororesin, and the outer diameter The cord heater 105 is about 0.55 mm.

As a result, the outer diameter of the cord-like heater 105 can be reduced by using a fluororesin that has a sufficient mechanical strength and is not easily melted to a relatively high temperature as the insulating film 104 of the cord-like heater 105. The surface of the sheet heating element 101 can be made almost smooth, and the flow of the synthetic resin can be made smooth when embedded in the toilet seat (for example, Patent Document 1). reference).
JP-A-8-78143

  However, in the conventional configuration, the planar heating element 101 is a single horseshoe-shaped heater unit configuration, and in the process of attaching the planar heating element 101 to the toilet seat, it follows the shape of the seating portion of the toilet seat. Since it is necessary to stick to the center of the horseshoe shape of the sheet heating element 101, a sticking failure part such as a wrinkle or a float caused by a sticking deviation on the left and right is likely to occur, and the sticking operation itself is also complicated. .

  Furthermore, in the process in which the sheet heating element 101 is formed in a horseshoe shape, the inner part of the horseshoe shape of the metal foil sheet 102 and the adhesive tape 103 is often scrapped, and there are problems such as inefficiency of material utilization and cost increase. there were.

  In this state, when the cord-like heater 105 is energized, thermal expansion occurs when the resistance wire 106 generates heat, and the longitudinal heating direction of the substantially long U-shape or the planar heating element 101 described above. In the wrinkles and poorly adhered portions near the center of the horseshoe shape, the heat release from the resistance wire 106 is reduced and self-heating is increased, so that the degree of expansion tends to be particularly high.

  In the heated toilet seat, in order to maintain the heat retaining function, energization is controlled to be turned on and off, and accordingly, the resistance wire 106 of the cord heater 105 repeats thermal expansion and contraction.

  The distortion due to the thermal expansion and contraction is concentrated and amplified in the gap 107 generated between the cord heater 105, the metal foil sheet 102, and the adhesive tape 103, and is thus amplified. In the longitudinal direction of the letter shape, or in the wrinkles or poorly adhered portions near the center of the horseshoe shape of the planar heating element 101, disconnection sometimes occurs, and the heating performance of the toilet seat may be lost.

  The present invention solves the above-mentioned conventional problems, and can easily and reliably attach the toilet seat heater to the seating surface of the toilet seat, and at the same time not only realizes cost reduction by effectively using the material, but also linear heat generation It is intended to absorb the thermal expansion and contraction of the body to prevent the linear heating element from being damaged and to greatly improve the durability.

  In order to solve the above-described conventional problems, a heated toilet seat according to the present invention includes a toilet seat having a seating surface, and a plurality of toilet seat heaters disposed on the back side of the seating surface, the toilet seat heater including an inner peripheral side of the seating surface, It is composed of a plurality of series of linear heating elements formed in a meandering manner so that the bent portion is positioned on the outer peripheral side, and is set to a single or a plurality of current systems.

  In this way, by dividing the toilet seat heater into a plurality of parts, for example, when attaching the toilet seat heater in a substantially horseshoe shape on the back side of the seating surface, it is only necessary to attach the toilet seat heater divided into the left and right parts to the respective right and left portions. The positioning of each toilet seat heater is easy to position, and there is almost no occurrence of defective sticking such as wrinkles or floats in the prior art. Therefore, it is possible to prevent partial self-heating of the linear heating element that is likely to occur at such a sticking failure portion during energization.

  In addition, the material for each toilet seat heater can be freely arranged so that the amount of waste material is minimized in the cutting process, and the cost can be reduced by effectively using the material.

  In addition, by setting a plurality of toilet seat heaters to a plurality of current systems, it is possible to individually adjust the difference in temperature rise that may occur in each toilet seat heater by controlling the input to each toilet seat heater. As a result, the user can be provided with a more comfortable feeling. Regardless of the number of current systems, even if one of the toilet seat heaters fails, only the failed toilet seat heater can be easily replaced and reattached. There is an advantage that the minimum processing is required.

  Furthermore, the thermal expansion and contraction of the linear heating element that occurs when energization is repeatedly turned on and off is absorbed by the bending portion to prevent the problem of disconnection of the heating element, and multiple series of meandering linear shapes Since it is a heating element, the heating distribution on the outer periphery of the seating portion where the heat dissipation is large can be enhanced to make the heating temperature uniform.

  The heating toilet seat of the present invention not only realizes cost reduction by effectively using the material used for the toilet seat heater, but also facilitates the sticking of the toilet seat heater to the seating surface, and without sticking defects such as wrinkles and floats As a result, linear heat generation is prevented by the thermal stress buffering action that prevents partial self-heating of the linear heating element and also reduces and reduces thermal stress distortion due to thermal expansion and contraction of the linear heating element. Not only can the body be prevented from being damaged and the durability greatly improved, but the temperature distribution characteristics of the seating surface can be enhanced to realize comfortable heating.

A first invention includes a toilet seat having a seating surface and a plurality of toilet seat heaters disposed on the back side of the seating surface, and the toilet seat heater has bending portions positioned on an inner peripheral side and an outer peripheral side of the seating surface. Each is composed of a plurality of series of linear heating elements formed in a meandering shape, and is set to a single current system. Thus, for example, when attaching a toilet seat heater in a substantially horseshoe shape on the back side of the seating surface, the toilet seat heater divided into left and right may be attached to the corresponding portions on the left and right, respectively, and the positioning of the attachment of each toilet seat heater is easy Thus, there are almost no occurrences of poorly adhered parts such as wrinkles and floats. In addition, the material for each toilet seat heater can be freely arranged so that the amount of waste material is minimized in the cutting process, and the cost can be reduced by effectively using the material. In addition, even if one of the toilet seat heaters breaks down, it is easy to replace and reattach only the failed toilet seat heater. That's it. Furthermore, even for a plurality of toilet seat heaters, by setting a single current system, for example, by detecting the temperature of the representative point on one side of the left and right seats, the entire toilet seat heater can be controlled, Easy control configuration. Further, the thermal expansion and contraction of the cord-like heating element that occurs when the energization is repeatedly turned on and off is absorbed by the bent portion to prevent the problem of disconnection of the heating element, and a plurality of serpentine linear heating elements For this reason, the heating distribution on the outer periphery of the seating portion where the heat dissipation is large can be enhanced to make the heating temperature uniform.

  The second invention includes a toilet seat having a seating surface and a plurality of toilet seat heaters disposed on the back side of the seating surface, and the toilet seat heater has bending portions positioned on the inner peripheral side and the outer peripheral side of the seating surface. Each is composed of a plurality of series of linear heating elements formed in a meandering shape, and is set to a plurality of current systems. As a result, there may be some differences in temperature rise between multiple toilet seat heaters, but at least to a certain degree for each toilet seat heater, such as adjusting the input voltage to the main toilet seat heater and fine ON / OFF. As a result, the user can be provided with a more comfortable feeling.

  In the third invention, in particular, in the second invention, the number of current systems set in the toilet seat heater is made to coincide with the number of toilet seat heaters. Thereby, adjustment of the input voltage to the toilet seat heater, fine ON, OFF, etc. can be individually adjusted for every toilet seat heater, and a comfortable feeling for use by the user can be provided.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the toilet seat heater is configured in two substantially symmetrical shapes. This makes it possible to construct a pair of left and right symmetric toilet seat heaters according to a horseshoe shape or a substantially O-shaped seating section, making it extremely easy to stick, and taking the material of each toilet seat heater into the cutting process In this case, it is possible to arrange such that the amount of waste material is minimized, and the cost can be reduced by effectively using the material.

  According to a fifth aspect of the present invention, in particular, in any one of the first to fourth aspects, the toilet seat heater includes at least one temperature detection sensor that detects the temperature of the seating surface, and an output signal from the temperature detection sensor. This is linked to a control unit that controls the energization amount. As a result, the energization amount control of a predetermined toilet seat heater is performed by interlocking the output signal of the temperature detection sensor and the control unit, and as a result, the seating surface can always maintain the optimum temperature state.

  According to a sixth aspect of the present invention, in particular, in any one of the first to fifth aspects, the toilet seat heater comprises a meandering linear heating element having an enameled wire and an outer periphery covered with an insulating coating. It is configured to be fixed to the body and adhered to the back side of the seating surface. As a result, the enamel layer excellent in chemical resistance and heat resistance can cover the conductor wire to form the first insulating layer, and the second insulating coating such as fluorine-containing resin is formed on the outer periphery thereof. A double insulation coating is formed, and the insulation of the cord-like heating element is greatly improved.

  According to a seventh aspect of the invention, in particular, in the sixth aspect of the invention, the toilet seat heater includes a linear heating element sandwiched between two layers of heat-conducting foil members, and one heat-conducting foil member is disposed on the inner surface of the seating portion. Attached. Thereby, for example, a sheet-like toilet seat heater can be constituted by sandwiching between two layers of metal foil bodies having high thermal conductivity (high thermal conductivity) such as aluminum foil, copper foil, etc. Heat generation can be distributed over the entire surface of the foil body to keep the entire toilet seat heater in a substantially uniform heat generation state, thereby avoiding an unnecessary high temperature of the linear heat generation body and preventing disconnection and the like. Therefore, by sticking this toilet seat heater on the inner surface of the seating section, it is possible to conduct heat conduction quickly and uniformly throughout the seating section.

The eighth aspect of the invention includes the heating toilet seat according to any one of the first to seventh aspects, the main body, and the cleaning device. This provides a sanitary washing device provided with a heated toilet seat that not only significantly improves durability by preventing breakage of the heating element, but also enhances the temperature distribution characteristics of the seating portion and can realize comfortable heating. be able to.

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

(Embodiment 1)
1 is a front view of a toilet seat heater used in the heating toilet seat according to Embodiment 1 of the present invention, FIG. 2 is a front view of the toilet seat heater configured in a single current system, and FIG. 3 is an exploded perspective view of the entire toilet seat, 4 is a state diagram in which the toilet seat heater is attached to the seating surface, FIG. 5 is a partially enlarged view of a region E in FIG. 2, FIG. 6 is a partially enlarged sectional view of a linear heating element of the toilet seat heater, and FIG. FIG. 8 is a conceptual diagram of a control block of the heating toilet seat in the same embodiment, and FIG. 9 shows the material removal of a single horseshoe-shaped toilet seat heater. FIG. 10 is a conceptual diagram showing material removal of the toilet seat heater used in the same embodiment.

  The configuration, operation, and action of the toilet seat device according to Embodiment 1 of the present invention will be described with reference to the above drawings.

  In FIG. 1, the toilet seat heater 450U includes toilet seat heaters 450L and 450R that are divided symmetrically.

  FIG. 2 shows a toilet seat heater 450U in which the toilet seat heaters 450L and 450R are configured in a single current system, and an end portion of the linear heating element 460 is connected to a lead wire 465 provided with an insulating coating. The toilet seat heaters 450L and 450R constitute a single current toilet seat heater 450U by connecting each end of the lead wire 465 with a connector 465A.

  FIG. 3 shows a toilet seat base 420 made of synthetic resin, a seating surface 410U formed of a metal having high thermal conductivity such as aluminum, and toilet seat heaters 450L and 450R are interposed between the toilet seat base 420 and the seating surface 410U. In the configuration, the toilet seat heaters 450L and 450R are each fixed by sticking the adhesive layer 452a to a fixed position on the inner surface of the seating surface 410U.

  FIG. 4 shows a state in which toilet seat heaters 450L and 450R are attached to the back surface of the seating surface 410U to form a substantially horseshoe-shaped toilet seat heater 450U. As described above, when the toilet seat heater is attached to the back side of the seating surface 410U in a substantially horseshoe shape, the bow-shaped toilet seat heaters 450L and 450R divided into the left and right portions may be attached to the corresponding portions on the left and right, respectively. Therefore, the positioning of the toilet seat heaters 450L and 450R can be easily performed, and each can be reliably adhered to the back surface of the seating surface 410U. For this reason, there is almost no occurrence of a sticking failure portion such as wrinkles or floating, which is likely to occur when sticking a single horseshoe-shaped toilet seat heater configuration. Thereby, it is possible to prevent a durability problem such as partial self-heating of the linear heating element that is likely to occur in such a poorly adhered portion, and it is possible to increase the heating distribution and make the heating temperature uniform. .

As shown in FIGS. 1 and 5, the linear heating element 460 is arranged in a meandering shape that meanders in the left-right direction in accordance with the shape of the seating surface 410U. The linear heating element 460 is arranged so that the meandering bent portion is positioned in the vicinity of the outer side and the inner side of the seating surface. Specifically, one continuous linear heating element 460 is divided into a first series A linear heating element 460a and a second series B linear heating element 460b, and both are arranged substantially in parallel. Has been. In this arrangement, since the line interval between the bent portions is short, the change in the line length of the linear heating element 460 due to thermal expansion and contraction becomes small, and the thermal stress due to thermal expansion and contraction is buffered at the bent portion. In this configuration, disconnection is suppressed. Note that the lengths La and Lb of the bent portions in the region E in FIG.
Any adjustment is possible, and thereby the heating distribution of the toilet seat heater 450U 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 450U is higher than the heating density in the central portion of the toilet seat heater 450U. In addition, a uniform heating temperature can be maintained in almost the entire region of the toilet seat heater 450U.

  Further, in this example, the current direction in the first series A linear heating element 460a is opposite to the current direction in the first series B linear heating element 460b, and therefore both the linear heating elements 460a. The magnetic field generated from 460b tends to be canceled, and as a result, generation of noise and the like is suppressed.

  In FIG. 6, the seating surface 410U is formed of, for example, an aluminum plate 413 having a thickness of 1 mm. On the upper surface of the aluminum plate 413, an undercoat layer 412 and a surface decorative layer 411 are formed in two layers with a thickness of about 0.08 to 0.14 mm, and the lower surface is coated with a thickness of about 0.06 to 0.1 mm. A film 414 is formed. In this example, the undercoat layer 412, the surface decorative layer 411, and the lower surface coating film 414 are made of a polyester resin material having a heat resistance of about 150 ° C. In addition to the aluminum plate 413, any one or a combination of a copper plate, a stainless steel plate, an aluminum-plated steel plate, and a zinc-aluminum-plated steel plate may be used for the seating surface 410U.

  On the other hand, a toilet seat heater 450U is attached to the lower surface coating film 414 side of the seating surface 410U. The toilet seat heater 450U holds the meandering shape arrangement by sandwiching the linear heating element 460 between the adhesive layer 452b side of the first metal foil 453 and the non-adhesive layer side of the second metal foil 451. It is a thing. As the first metal foil 453 and the second metal foil 451, for example, an aluminum foil having a relatively high thermal conductivity and a thickness of 0.05 mm is used. In addition, the first metal foil 453 and the second metal foil 451 have a higher thermal conductivity such as a copper foil. When a metal material is used, the heating performance as the toilet seat heater 450U increases.

  The linear heating element 460 includes a heating wire 463a having a substantially 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 is made of, for example, copper or a copper alloy having a diameter of 0.16 to 0.25 mm. In the present embodiment, a high tensile strength heater wire made of a 4% Ag—Cu alloy having a diameter of 0.168 mm is used as the heating wire 463a. Incidentally, the resistance value is 0.88 Ω / m.

  The enamel layer 463b, which is the first insulating coating of the heating wire 463a, is made of, for example, polyester imide (PEI) having heat resistance of 180 to 300 ° C. The film thickness of the enamel layer 463b is 0.02 mm or less, and is 0.01 to 0.016 mm in this embodiment. 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. In addition, if other materials such as enamel layer 463b are polyimide (PI) or polyamideimide (PAI), the heat resistance is further increased.

  Further, the second insulating coating is made of a fluororesin such as a perfluoroalkoxy mixture having a heat resistance of 260 ° C. (hereinafter referred to as PFA layer 462). The thickness of the PFA layer 462 is, for example, 0.05 to 0.15 mm. The PFA layer 462 can be formed by extrusion. In this case, even if the thickness of the PFA layer 462 is as thin as about 0.05, it is possible to ensure electrical withstand voltage performance that can withstand lightning surge.

  Therefore, a linear heating element 460 is obtained in which a thin and thin insulating coating is formed on the heating line. The outer diameter remains in the range of 0.3 to 0.50 mm. In this example, the outer diameter can be about 0.35 mm, ensuring the withstand voltage, and conducting heat from the heating wire 463a to the metal foil 451 and the seating surface 410U. Can be done very quickly.

  When enameled wire 463 with excellent heat resistance is used as a heater wire in this way, the temperature of the toilet seat can be raised in a sufficiently short time, and electrical insulation and safety can be ensured, so it can be applied to various toilet seat devices. It is.

  FIG. 7 shows another configuration example of the linear heating element 460 in which a plurality of enamel wires 463 are twisted, and each enamel wire 463 is formed as a first insulating coating on a heating wire 463a having a diameter of 0.09 mm. An enamel layer 463b having a thickness of 0.01 mm is formed.

  Further, a double insulation structure is secured by forming a PFA layer 462 as a second insulation coating so as to surround a bundle of enamel wires 463.

  In FIG. 7, seven enamel wires 463 are twisted together, but the number of enamel wires 463 is not limited to seven.

  In this configuration, since a plurality of enameled wires 463 are twisted to form a bundle of wires, thermal stress due to thermal expansion and contraction can be dispersed throughout the bundle, so that a situation such as disconnection can be suppressed. Further, by making at least one of the stranded wires an uninsulated electric wire without the enamel layer 463b, even when the enamel layer 463b of any enamel wire 463 is broken down due to local high heat or the like, the breakdown is prevented. It is possible to detect quickly and to safely cut off the power supply to the heating wire 463a.

  In FIG. 2, it is important that the electrical resistance value per unit length of the lead wire 465 is sufficiently smaller than the electrical resistance value per unit length of the linear heating element 460. By making the electrical resistance value per unit length of the lead wire 465 at least one-quarter, desirably one-tenth or less, unnecessary heat generation in the lead wire 465 can be prevented, and safety and energy saving are ensured. be able to. In addition, it is an important configuration to provide the connecting portions 466, 467, 468, and 469 between the lead wire 465 and the linear heating element 460 at positions sandwiched between the thermally conductive foil bodies 451 and 453.

  If the connecting portions 466, 467, 468, and 469 between the lead wire 465 and the linear heating element 460 are present at positions where they are not sandwiched between the thermally conductive foil bodies 451 and 453, the linear heating element 460 is provided. Heat is not transferred to the heat conductive foil bodies 451 and 453 at a high speed, so the temperature is partially increased, and the insulation of the linear heating elements 460 and the lead wires 465 in the vicinity of the connecting portions 466, 467, 468 and 469 Could be damaged.

  As described above, the lead wire 465 for connecting the plurality of toilet seat heaters 450L and 450R and the connecting portions 466, 467, 468, and 469 are not required due to the configuration in which the heat conductive foil bodies 451 and 453 are sandwiched. It is possible to ensure safety by preventing the occurrence of excessive high temperatures.

In FIG. 8, the heated toilet seat 110 includes a main body 200, a remote control device 300, a toilet seat 400, and a human body detection sensor 600. The main body 200 includes a control unit 90, a temperature measuring unit 401, a heater driving unit 402, a toilet seat temperature adjustment lamp RA1, and a seating sensor 610. The toilet seat 400 includes a toilet seat heater 450U in which the toilet seat heaters 450L and 450R are configured in a single current system, and a thermistor 401a. The thermistor 401a is disposed on the back surface of the seating surface 410U or on one side of the toilet seat heaters 450L and 450R, and detects the representative temperature of the toilet seat 400.

  The control unit 90 is composed of, for example, a microcomputer, and determines the user's entrance and the temperature of the toilet seat 400, a timer function, storage of various information, and switching of energization rate for controlling the operation of the heater driving unit 402. It has the function of.

  The temperature measuring unit 401 is connected to the thermistor 401a and measures the temperature of the toilet seat 400 based on a signal output from the thermistor 401a. The heater driving unit 402 is connected to the toilet seat heater 450U and drives the toilet seat heater 450U.

  In this example, as a normal use state, at the time of initial setting, the control unit 90 controls the heater driving unit 402 so that the toilet seat 400 is temperature-adjusted to, for example, about 18 ° C. as a standby temperature. The controller 90 detects the user's entry into the toilet room based on the entry detection signal from the human body detection sensor 600. Subsequently, the control unit 90 selects a predetermined heater control pattern based on the measured temperature value of the toilet seat 400 and the toilet seat set temperature, and the toilet drive heater 450 is driven by the heater driving unit 402, so that the temperature of the toilet seat 400 is set to the toilet seat setting. Instantly warms to temperature. Then, the thermistor 401a detects the representative temperature of the toilet seat 400, and the temperature of the toilet seat 400 is maintained within a certain suitable temperature, for example, in the range of 34 to 42 ° C. according to the preference of the user. Therefore, when the user sits on the toilet seat 400, comfortable use is possible without feeling cold.

  In general, the heated toilet seat 110 is seated with the skin in direct contact with the toilet seat 400, and thus sufficient consideration is required for safety. It can be used safely and comfortably in normal use, but in the unlikely event that a malfunction occurs in the control unit 90 due to some abnormality, and energization control to the toilet seat heater 450U becomes impossible, an immediate operation of the safety device is necessary. For example, an overheat prevention device (not shown) or the like may be provided in the energization path to the toilet seat heater 450U to quickly detect an overtemperature of the toilet seat heater 450U and to block the energization path to the toilet seat heater 450U. Is possible.

  FIG. 9 is an example of material removal when the toilet seat heater is formed in a single horseshoe shape, and the required material size is W0 × H0. On the other hand, as shown in FIG. 10, the material removal when the toilet seat heaters 450L and 450R in this example are configured is a rectangle of W = 0.79 × W0 and H1 = 1.05 × H0, It is about 83% compared to the material removal in the single horseshoe shape, and the material of the first metal foil 453 and the second metal foil 451 can be reduced by 17%. Therefore, the use cost can be reduced by dividing and processing the toilet seat heater 450U into the toilet seat heaters 450L and 450R.

  As described above, not only cost reduction is achieved by effectively utilizing the materials used, but also the toilet seat heater 450U can be easily attached to the seating surface 410U, and reliably without defects such as wrinkles and floats. As a result, the linear heating element 460 can prevent partial self-heating, and at the same time, the thermal heating buffer 460 can reduce or reduce thermal stress distortion caused by thermal expansion and contraction. In addition to preventing the body 460 from being damaged and greatly improving durability, the temperature distribution characteristics of the seating surface 410U can be enhanced with a relatively simple control configuration to realize comfortable heating.

(Embodiment 2)
FIG. 11 is a front view in which two toilet seat heaters used in the heating toilet seat in Embodiment 2 of the present invention are configured in a two-current system, and FIG. 12 is a conceptual diagram of a control block of the heating toilet seat in the same embodiment.

  The configuration, operation, and action of the toilet seat device according to Embodiment 2 of the present invention will be described with reference to the above drawings.

  11 and 12, the difference from the first embodiment is that the left and right toilet seat heaters 450AL and 450AR constituting the toilet seat heater 450AU constitute one current system, and the toilet seat heater AU constitutes a two current system. The thermistors 401a and 401b used to measure the representative temperatures of the left and right portions of the toilet seat 400 are provided in the toilet seat 400 at positions corresponding to the toilet seat heaters 450AL and 450AR, respectively, and are connected to the temperature measurement unit 401. Each current system from 450AL and 450AR is connected to the heater drive unit 402. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, and abbreviate | omits description.

  With the above configuration, as in the first embodiment, when the user enters the toilet room, the control unit 90 controls the left and right sides based on the temperature values measured by the thermistors 401a and 401b of the toilet seat 400 and the toilet seat set temperature. After the predetermined heater control pattern is selected, the left and right toilet seat heaters 450AL and 450AR are individually driven by the heater driving unit 402, and the temperature of the toilet seat 400 is instantaneously heated to the toilet seat set temperature. At this time, the heater driving unit 402 optimizes the energization amounts of the toilet seat heaters 450AL and 450AR via the control unit 90 based on the temperature signals from the thermistors 401a and 401b. Therefore, the temperature of the toilet seat 400 is small and uniform as a whole with little difference in temperature between the left and right, regardless of the finish of the toilet seat heaters 450AL and 450AR, the degree of sticking, or the variation of the linear heating element 460 at that time. The temperature distribution can be secured, and the comfort for the user can be further realized.

(Embodiment 3)
FIG. 13 is a conceptual diagram showing material removal of the toilet seat heater according to Embodiment 3 of the present invention.

  The configuration, operation, and action of the toilet seat device according to Embodiment 3 of the present invention will be described using the above drawings.

  In FIG. 13, the difference from the first embodiment is that the left and right toilet seat heaters 450L and 450R of the toilet seat heater 450U are housed in a parallelogram. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, and abbreviate | omits description.

  The material removal of the left and right toilet seat heaters 450L and 450R is a parallelogram with a width W2 = 0.79 × W0 and a height H2 = 1.02 × H0, and the area is a single horseshoe shape (FIG. 9). The material can be reduced by 20% compared to about 80%. Therefore, the usage cost can be further reduced by dividing the toilet seat heater 450U into the toilet seat heaters 450BL and 450BR and cutting them diagonally as parallelograms.

(Embodiment 4)
FIG. 14 is an external perspective view showing a sanitary washing device according to Embodiment 4 of the present invention, and includes any one of the heating toilet seat and toilet seat heater shown in Embodiments 1 to 3.

  In FIG. 14, the sanitary washing device 900 installed in the toilet room is attached to the upper surface of the toilet bowl 700. The sanitary washing device 800 includes a main body 200, a remote operation device 300, a toilet seat 400, and a lid 500.

  The toilet seat 400 includes any one of the toilet seat devices shown in the first to third embodiments, and the toilet seat 400 and the lid portion 500 are attached to the main body 200 so as to be openable and closable. The main body 200 is provided with a cleaning device 800 that enters and exits the toilet bowl 700 and a cleaning water supply mechanism (not shown), and a control unit 90 is built therein.

When the user enters the toilet room, the human body detection sensor 600 (for example, a reflective infrared sensor) detects the infrared light reflected from the human body and detects the user's room entry.

  At that time, as described in the first embodiment, the seating surface 410U of the toilet seat 400 rapidly rises to a temperature at which the user does not feel cold, for example, within 6 seconds.

  Next, when the user is seated on the seating surface 410U, a seating sensor 610 (for example, a reflective infrared sensor) provided on the front upper portion of the main body 200 detects infrared rays reflected from the human body, and thereby the toilet seat 400 is placed on the toilet seat 400. Detecting the presence of the user, the seating surface 410U is held at an appropriate temperature that allows comfortable seating.

  When the user operates the remote control device 300 after the stool is finished and sends a cleaning instruction as a signal to the main body 200, the cleaning device 800 directly connected to the cleaning water supply mechanism connected to the water pipe (not shown). Protrudes and washing water (arrow) spouts from the vicinity of the tip to wash the user's local area. Further, when the user operates the remote control device 300 after the cleaning is completed and sends a cleaning stop signal to the main body 200, the cleaning device 900 is accommodated in the main body 200. Finally, the user stands up from the seating surface 410U and leaves the toilet room.

  As described above, it is possible to provide a sanitary washing apparatus capable of realizing comfortable heating with cost reduction, significant improvement in durability, and relatively simple control configuration.

  As described above, the heating toilet seat of the present invention not only realizes cost reduction by effectively using the material used for the toilet seat heater, but also facilitates sticking of the toilet seat heater to the seating surface, and wrinkles, floats, etc. Thermal stress buffering action that can be reliably performed without poor adhesion, and as a result, prevents partial self-heating of the linear heating element, and also reduces and reduces thermal stress distortion due to thermal expansion and contraction of the linear heating element In addition to preventing damage to the linear heating element and greatly improving durability, it is possible to realize comfortable heating by enhancing the temperature distribution characteristics of the seating surface. It can be applied as a general-purpose safety mechanism technology for heating equipment.

Front view of toilet seat heater used for heating toilet seat in Embodiment 1 of the present invention The front view which comprised the toilet seat heater in the same embodiment in the single electric current system The exploded perspective view of the whole toilet seat in the embodiment The state figure which stuck the toilet seat heater in the same embodiment on the seating surface Partial enlarged view of region E of toilet seat heater in the same embodiment Partial expanded sectional view of the linear heating element in the same embodiment Partial expanded sectional view of the other example of the linear heating element in the same embodiment Conceptual diagram of control block of toilet seat device in the embodiment Conceptual diagram showing material removal of a single horseshoe-shaped toilet seat heater The conceptual diagram which shows the material removal of the toilet seat heater in the embodiment The front view which comprised the two toilet seat heaters used for the heating toilet seat in Embodiment 2 of this invention to the two electric current system. Conceptual diagram of control block for heated toilet seat in the embodiment The conceptual diagram which shows the material removal of the toilet seat heater of the heating toilet seat in Embodiment 3 of this invention External appearance perspective view which shows the sanitary washing apparatus in Embodiment 4 of this invention. (A) Front view of sheet heating element of conventional toilet seat device, (b) Partial enlarged sectional view of the sheet heating element

Explanation of symbols

110, 120 Heating toilet seat 200 Main body portion 400 Toilet seat 410U Seating surface 450AL, 450AR, 450AU, 450L, 450R, 450U Toilet seat heater 460, 460a, 460b Linear heating element 463 Enamel wire 463a, 463b Insulation coating 451 (thermally conductive) Foil body) Second metal foil 453 (thermally conductive foil body) first metal foil
401a, 401b Temperature detection sensor (thermistor)
800 Cleaning device 900 Sanitary cleaning device

Claims (8)

A toilet seat having a seating surface, and a plurality of toilet seat heaters disposed on the back side of the seating surface, wherein the toilet seat heater is formed in a meandering shape so that bending portions are located on the inner peripheral side and the outer peripheral side of the seating surface A heating toilet seat comprising a plurality of linear heating elements and a single current system. A toilet seat having a seating surface and a plurality of toilet seat heaters disposed on the back side of the seating surface, wherein the toilet seat heater is formed in a meandering shape so that bent portions are located on the inner peripheral side and the outer peripheral side of the seating surface A heating toilet seat comprising a plurality of linear heating elements and a plurality of current systems. The heating toilet seat according to claim 2, wherein the number of systems of the current system set in the toilet seat heater is matched with the number of toilet seat heaters. The heating toilet seat according to any one of claims 1 to 3, wherein the toilet seat heater is configured in two substantially symmetrical shapes. The toilet seat heater is interlocked with at least one temperature detection sensor for detecting the temperature of the seating surface and a control unit for controlling an energization amount to the toilet seat heater by an output signal of the temperature detection sensor. The heating toilet seat of any one of 1-4. The toilet seat heater is composed of an enameled wire and a meandering linear heating element whose outer periphery is covered with an insulating coating, fixed to a thermally conductive foil body, and attached to the back side of the seating surface. The heating toilet seat according to any one of 1 to 5. The toilet seat heater according to claim 6, wherein the toilet seat heater includes a linear heating element sandwiched between two layers of thermally conductive foil bodies, and one thermally conductive foil body is adhered to the inner surface of the seating portion. The sanitary washing apparatus provided with the heating toilet seat of any one of Claims 1-7, a main-body part, and the washing | cleaning apparatus.