JP2010051672A - Toilet seat heater and heated toilet seat using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet seat heater which raises the temperature of a seat surface of a toilet seat in a considerably short time, and is safe even if water enters the toilet seat. <P>SOLUTION: A linear heat generator 460 made of an enamel wire is held between a thermofusible adhesive layer 452b of a first waterproof insulation foil 453 and a non-adhesive layer of a second waterproof insulation foil 451, and is uniformly thermally bonded, so that the toilet seat heater 450 is provided which has a sheet shape and in which entrance of water is prevented at a boundary P on the outer circumferential end surface between the first waterproof insulation foil 453 and the second waterproof insulation foil 451. Therefore, heat drawn from the linear heat generator 460 to the first waterproof insulation foil 453 is minimized to be considerably efficiently transferred to the seat surface 410U through the second waterproof insulation foil 451. Thus, the heated toilet seat 400 is provided which has reliable temperature rise performance while securing waterproof insulation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a toilet seat heater and a heated toilet seat using the same.

  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 heated toilet seat for adjusting the temperature to an appropriate temperature have been devised. Especially, according to the heating toilet seat shown above, even if 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 heating toilet seat described in Patent Document 1, as shown in FIG. 10, a linear heater 2 is provided inside a toilet seat casing 1 formed of a magnesium alloy. The linear heater 2 is disposed so as to meander over the entire back surface of the toilet seat casing 1, and a power supply circuit 3 is connected to both ends of the linear heater 2.

In such a configuration, the linear heater 2 generates heat when a voltage is applied from the power supply circuit 3 to the linear heater 2. And the heat of the linear heater 2 is transmitted to the toilet seat casing 1, the temperature of the toilet seat casing 1 rises, and the user can comfortably sit on the toilet seat.
No. 2003-310485

  However, in the conventional heating toilet seat as described above, in order to insulate the linear heater 2 and the toilet seat casing 1 from each other, a coated tube made of silicon rubber or vinyl chloride is used. In this case, it was necessary to increase the thickness of the coated tube in order to ensure manufacturing and electrical insulation.

  Therefore, when the thickness of the covering tube of the linear heater 2 is increased, the heat transfer efficiency from the linear heater 2 to the toilet seat casing 1 is reduced, and it is difficult to quickly raise the temperature of the toilet seat casing 1.

  In view of the problems of the prior art, the problem to be solved by the present invention is to ensure the electrical insulation of the linear heater with respect to the toilet seat and to increase the temperature of the toilet seat quickly, and to use it Was to provide a heated toilet seat.

  In order to solve the above problems, a toilet seat heater according to the present invention comprises a heating wire and a thin insulating layer covering the outer periphery thereof, a linear heating element provided on the back side of the toilet seat, the first waterproof insulating foil and the second A linear heating element is sandwiched between the first waterproof insulating foil and the second waterproof insulating foil, and the first waterproof insulating foil and the second waterproof insulating foil are joined together. The boundary portion facing the outer peripheral end face is made into a water-inhibiting structure.

  Furthermore, the heating toilet seat of the present invention comprises a toilet seat having a seating surface and containing a metal material, and the toilet seat heater described above, and the adhesive layer side of the second waterproof insulating foil is adhered to the back surface of the seating surface of the toilet seat. It is.

In the toilet seat heater and the toilet seat device using the same, heat generated by the heating wire is transmitted to the toilet seat via the insulating layer and the waterproof insulating layer, and the temperature of the toilet seat rises. In this case, since the toilet seat heater has an insulating layer formed on the linear heating element and is sandwiched between waterproof insulating foils, a double insulating configuration is secured.

  Therefore, even if the toilet seat heater is submerged, moisture does not come into contact with the linear heating element, and a reliable insulation state can be secured, and the toilet seat heater can be used as a toilet seat including a metal material. Even if it is affixed, insulation between the seating surface and the linear heating element can be ensured.

  As a result, it is possible to provide a heated toilet seat capable of quickly raising the temperature of the seating surface while reliably insulating the heating wire and the toilet seat.

  ADVANTAGE OF THE INVENTION According to this invention, the toilet seat heater which can heat up a toilet seat rapidly, and a toilet seat apparatus using the same can be provided, insulating a toilet seat and a heating wire reliably.

  1st invention comprises the heat generating wire and the thin insulating layer which coat | covered the outer periphery, the linear heat generating body provided in the back side of a toilet seat, 1st waterproof insulating foil, and 2nd waterproof insulating foil, A linear heating element is sandwiched between the first waterproof insulating foil and the second waterproof insulating foil, and the boundary facing the outer peripheral end surface where the first waterproof insulating foil and the second waterproof insulating foil are joined is submerged. It is a prevention structure.

  Thereby, the heat generated in the heating wire is transmitted to the first waterproof insulating foil and the second waterproof insulating foil through the insulating layer on the outer periphery of the heating wire, and is transmitted to the entire first and second waterproof insulating foils. Thermal diffusion.

  On the other hand, since the flooding is prevented at the boundary facing the outer peripheral end surfaces where the first and second waterproof insulating foils are joined, the linear heating element can come into contact with moisture even if it is submerged. Therefore, it is possible to realize a toilet seat heater that always ensures a double insulation state.

  Therefore, since only the first and second waterproof insulating foils are present around the linear heating element, when this toilet seat heater is attached to the heated body, the heated body is quickly heated. Therefore, it is possible to combine both immediate temperature and insulating properties with the minimum necessary configuration.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, the first waterproof insulating foil and the second waterproof insulating foil are provided with an adhesive layer on the first waterproof insulating foil that is not joined to the toilet seat, and the first waterproof insulating foil A linear heating element is sandwiched between the adhesive layer side and the non-adhesive layer side of the second waterproof insulating foil, and the first waterproof insulating foil is adhered to the second waterproof insulating foil.

  Accordingly, the first waterproof insulating foil and the second waterproof insulating foil are in close contact with each other via the linear heating element, so that not only the outer peripheral end face portions of the first and second waterproof insulating foils but also a wide range. Even if the end face of the first and second waterproof insulating foils is damaged and becomes submerged, the linear heating element does not come into contact with moisture. Heavy insulation can be maintained.

  And sticking with an adhesive layer in this way can comprise a sheet-like toilet seat heater as a whole.

  According to a third invention, in particular, in the first or second invention, the first waterproof insulating foil and the second waterproof insulating foil use polyester resin foil.

  Thereby, the first and second waterproof insulating foils have a configuration that does not allow moisture to pass completely, and a waterproof toilet seat heater can be realized.

  According to a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the polyester resin foil uses one of polyethylene terephthalate, polyesterimide, polyamideimide, and polyimide.

  Thereby, selection according to the actual highest use temperature of a linear heating element is possible. For example, it is possible to select polyethylene terephthalate up to about 180 ° C., polyester imide at about 200 ° C., polyamide imide or polyimide at about 250 ° C.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the adhesive layer of the first waterproof insulating foil uses a heat-fusible adhesive layer, and the adhesive layer of the second waterproof insulating foil is An adhesive layer is used.

  Thereby, a toilet seat heater can be easily comprised by heat-pressing a 1st waterproof insulating foil and a 2nd waterproof insulating foil with a laminator etc. FIG.

  In this case, the heat-fusible adhesive layer may use a normal laminating adhesive, such as ethylene-vinyl acetate copolymer resin (EVA), or a polyester-based hot melt agent, and its thickness is 0.002 A strong adhesive force can be obtained at about 0.01 mm, and the thickness can be reduced to about one-tenth compared to the case where a thickness of about 0.03 to 0.07 mm is required when an adhesive layer is used. .

  Therefore, it is possible to minimize the heat transfer loss of heat generated from the linear heating element. On the other hand, by using the adhesive layer of the second waterproof insulating foil as an adhesive layer, even a portion having a large number of curved surfaces such as the back surface of the seating surface of the toilet seat can be reliably adhered to the shape.

  In this way, a flexible seat-type toilet seat heater that can be attached to reduce the possibility of generating voids in accordance with various shapes and can realize quick heat conduction can be configured.

  In a sixth aspect of the invention, in particular, in any one of the first to fifth aspects, the adhesive layer between the first waterproof insulating foil and the second waterproof insulating foil uses an adhesive layer.

  Thus, the adhesive layer of the first waterproof insulating foil is used as an adhesive layer, so that it is not only easy to maintain the arrangement pattern of the linear heating elements, but the first waterproof insulating foil is Even if wrinkles are generated at the time of sticking to the waterproof insulation foil, the adhesive layer has a part of the adhesive layer due to the fluidity of the adhesive layer. The waterproofness of the adhesive portion of the foil can be ensured and the double insulation can be maintained.

  In a seventh aspect of the invention, particularly in the sixth aspect of the invention, the adhesive layer of the first waterproof insulating foil is configured to be thicker than the adhesive layer of the second waterproof insulating foil.

  As a result, it is not only easy to hold the arrangement pattern of the linear heating elements, but also at the time of sticking the first waterproof insulating foil to the second waterproof insulating foil, relatively many Even when wrinkles or the like occur, due to the fluidity caused by increasing the thickness of the pressure-sensitive adhesive layer, a part of the pressure-sensitive adhesive layer wraps around the many wrinkles described above. Since the waterproofness of the part is not impaired, double insulation can be maintained.

Therefore, a good insulating product can be obtained even if there are many wrinkles, the yield in the manufacturing process of the toilet seat heater can be maintained high, and the influence on the manufacturing cost can be minimized.

  According to an eighth invention, in particular, in any one of the first to seventh inventions, the linear heating element is configured such that at least an enamel layer is formed on the insulating layer of the heating wire.

  As a result, the enamel layer can sufficiently insulate the outer periphery of the heating wire at around 10 μm, and at the same time maintain the flexibility to withstand bending, and can constitute a linear heating element that is easy to pattern wiring.

  According to a ninth aspect of the invention, particularly in the eighth aspect of the invention, the linear heating element comprises a plurality of insulating layers of the heating lines, an enamel layer as the innermost layer, and a fluorine-containing resin layer as the outermost layer. is there.

  As a result, the enamel layer can be sufficiently insulated around the outer circumference of the heating wire with a thickness of around 10 μm, and a fluorine-containing resin layer is formed on the outer layer. A linear heating element capable of securing a structure and withstanding a high temperature of about 180 to 220 ° C. and ensuring quick heat transfer can be obtained.

  A tenth invention includes a toilet seat having a seating surface and containing a metal material, and the toilet seat heater according to any one of the first to ninth inventions, and a second waterproof insulating foil on the back surface of the seating surface of the toilet seat. The adhesive layer side of is attached.

  Accordingly, the toilet seat heater can be easily and reliably attached to the back side of the seating surface having a relatively large number of curved surfaces. In addition, in the unlikely event that the toilet seat is submerged, moisture does not come into contact with the linear heating element, and a reliable double insulation state can be maintained. A toilet seat can be realized.

  Therefore, even if this toilet seat heater is attached to a toilet seat containing a metal material, insulation between the seating surface and the linear heating element can be ensured.

  As a result, it is possible to provide a heating toilet seat capable of quickly raising the temperature of the seating surface while reliably insulating the heating wire and the toilet seat.

  Since the object of the present invention can be achieved by using the first to tenth aspects of the present invention as the main part of the embodiments, details of the embodiments corresponding to the respective claims will be described below with reference to the drawings. It will be described and the best mode for carrying out the present invention will be described. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is an enlarged cross-sectional view of a main part of a heating toilet seat according to Embodiment 1 of the present invention, FIG. 2 is a front view of a toilet seat heater used in the heating toilet seat, FIG. 3 is an exploded perspective view of the heating toilet seat, and FIG. FIG. 5 is a partially enlarged view of a region x in FIG. 2, FIG. 6 is a conceptual diagram of a control block of the heating toilet seat, and FIG. 7 is a sanitary washing composed of the heating toilet seat. It is a perspective view of an apparatus.

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

In FIG. 3, a heated toilet seat 400 (FIG. 7) includes 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 the toilet seat base 420 and the seating surface 410U. The toilet seat heater 450 is configured to have a horseshoe shape, and the adhesive layer 452a (FIG. 1) is adhered and fixed to a fixed position on the inner surface of the seating surface 410U. Yes.

  The toilet seat heater 450 is equipped with a thermistor 401a (FIG. 6) for adjusting the temperature of the normal seating surface 410U. Further, the toilet seat heater 450 has a linear heating element 460 wired in a fixed pattern, and a part of the pattern is a dense region 480 (FIG. 2), and the seating surface 410U is provided even in an abnormal state. It is configured to be in contact with an overheat prevention device (not shown) for controlling the temperature so as not to rise above a certain level. On the other hand, the control unit 90 (FIG. 6) has a signal input 600a from the human body detection sensor 600, a seating signal input 610a, an output from the thermistor 401a, and a toilet seat heater 450 via an overheat prevention device in between. The energization path is connected.

  As shown in FIGS. 2, 4, 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 410U. Specifically, a single linear heating element 460 is divided into a first series A linear heating element 460a and a second series B linear heating element 460b as shown in FIG. Both are arranged almost in parallel.

  In this arrangement of the linear heating elements 460, since the line spacing between the bent portions is short, the change in the line length of the linear heating elements 460 due to thermal expansion and contraction becomes small, and the thermal expansion and contraction occurs at the bending portions. It is configured to buffer the thermal stress caused by and suppress disconnection. Note that the lengths La and Lb of the bent portions in the region x in FIG. 2 and the spacing S between the bent portions can be arbitrarily adjusted, whereby 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. In addition, a uniform heating temperature can be maintained in almost the entire region of the toilet seat heater 450.

  In this example, as indicated by an arrow, 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. The magnetic field generated from the linear heating elements 460a and 460b tends to be canceled out, and as a result, generation of noise and the like is suppressed.

  1 and 2, the seating surface 410U is formed of, for example, an aluminum plate 413 having a thickness of 1 mm. A coating film 411 made of polyester resin having a heat resistance of about 150 to 180 ° C. is formed on the upper and lower surfaces of the aluminum plate 413 with a thickness of about 0.05 to 0.2 mm so that the fabric of the aluminum plate is not exposed. It has become. 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.

  Further, the toilet seat heater 450 sandwiches the linear heating element 460 between the heat-sealing adhesive layer 452b side of the first waterproof insulating foil 453 and the non-adhesive layer side of the second waterproof insulating 451, The meandering shape array described above is retained. And the main part of the heating toilet seat 400 is comprised by sticking the adhesion layer 452a side of the 2nd waterproof insulation foil 451 in the toilet seat heater 450 to the lower surface side of the seating surface 410U.

As the first waterproof insulating foil 453 and the second waterproof insulating foil 451 of the toilet seat heater 450, for example, polyethylene terephthalate (PET), which is relatively versatile among polyester resins, is used. Moreover, since the thickness of the 1st waterproof insulating foil 453 and the 2nd waterproof insulating foil 451 needs the softness | flexibility for pinching the linear heat generating body 460, and waterproof insulation, it is 0.012-0. .05 mm, and in this example 0.025 mm.

  The material of the first waterproof insulation foil 453 and the second waterproof insulation foil 451 can be selected from materials with higher heat resistance among polyester resins depending on the operating temperature range and allowable cost of the linear heating element. It is. For example, polyesterimide (PEI) can be selected at about 200 ° C., and polyamideimide (PAI) or polyimide (PI) can be selected at about 250 ° C.

  The linear heating element 460 includes a heating wire 463a having a substantially circular cross section and an insulating layer including an enamel layer 463b covering the outer periphery thereof.

  The heating wire 463a is made of copper or a copper alloy having a diameter of 0.16 to 0.25 mm, for example. 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 layer of the heating wire 463a, is made of PEI, for example. 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, when PAI or PI is used as another material of the enamel layer 463b, the heat resistance is further increased.

  By the way, the main process for constructing the toilet seat heater 450 will be described. First, after the linear heating element 460 is patterned with the wiring pattern, the first waterproof insulating foil 453 is bonded by heat fusion. The first waterproof insulating foil and the linear heating element 460 are heat-bonded with the surface on the layer 452b side facing the linear heating element 460.

  Specifically, the surface of the first waterproof insulating foil 453 on the side of the heat-fusible adhesive layer 452b is brought close to the surface of the linear heating element 460 from above, so Almost simultaneously with the contact of the adhesive layer 452b, the non-adhesive surface of the first waterproof insulating foil 453 is pressure-bonded while being heated uniformly. The heating temperature and the pressure bonding time at this time are, for example, about 200 to 250 ° C. and 1 to 5 seconds.

  Note that the material of the heat-fusible adhesive layer 452b may be a normal laminating adhesive, such as ethylene-vinyl acetate copolymer resin (EVA), or a polyester hot melt agent. In this example, EVA effective for preventing flooding was used, and its thickness was about 0.002 to 0.01 mm. At this time, the heat-fusible adhesive layer 452b and the enamel layer 463b of the linear heating element 460 are fused, and the wiring pattern of the linear heating element 460 is fixed to the first waterproof insulating foil 453.

  After that, the first waterproof insulating foil 453 is sandwiched between the first waterproof insulating foil 453 and the non-adhesive layer side of the second waterproof insulating foil 451 by a heating roller laminator. Is uniformly heat-sealed to the non-adhesive layer side of the second waterproof insulating foil 451.

  In this way, as shown in FIGS. 2 and 4, the toilet seat heater 450 has the entire surface of the first waterproof insulating foil 453 and the second waterproof insulating foil 451 formed by the adhesive layer 452 b of the first waterproof insulating foil 453. As a result of joining, the first waterproof insulating foil 453 and the second waterproof insulating foil 451 facing the outer peripheral end face (the end face that becomes the outer side and the inner side of the horseshoe shape shown in FIG. 2 and FIG. 4) are joined. In the boundary portion P, a water-inhibiting structure is formed by the adhesive layer 452b, and a sheet-like toilet seat heater 450 that completely prevents water infiltration is configured.

  Accordingly, the toilet seat heater 450 is extremely flexible, and the adhesive layer 452a having a thickness of 0.05 mm is used as the adhesive layer of the second waterproof insulating foil 451, so that there are many curved surfaces such as the back surface of the seating surface 410U. However, the gap can be reduced as much as possible in accordance with the shape, and it can be reliably adhered.

  In this way, by using the heating wire 463a that is simply the enamel layer 463b coated on the linear heating element 460, heat conduction from the heating wire 463a can be improved while maintaining insulation.

  Further, the adhesive layer of the first waterproof insulating foil 453 is a heat-sealable adhesive layer 452b that provides a strong adhesive force with a thickness of about 0.002 to 0.01 mm. Can be reduced to about one-tenth as compared with the necessity of 0.03 to 0.07 mm.

  Therefore, heat taken from the linear heating element 460 to the first waterproof insulating foil 453 can be minimized, and the heat can be transferred to the seating surface 410U through the second waterproof insulating foil 451 with extremely high efficiency. As a result, quick heating performance can be ensured while ensuring waterproof insulation of the heating toilet seat 400.

  In FIG. 6, the toilet seat device 110 includes a main body 200, a remote control device 300, a heated 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. Further, the toilet seat 400 includes the toilet seat heater 450 and the thermistor 401a of the present invention.

  The control unit 90 is composed of, for example, a microcomputer, and determines a user's entrance and temperature of the heating 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 functions such as.

  The temperature measurement 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 450 of the heating toilet seat 400, and the toilet seat heater 450 Drive.

  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 temperature of the heating toilet seat 400 is 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.

  Next, the control unit 90 selects a predetermined heater control pattern based on the measured temperature value of the heating toilet seat 400 and the toilet seat set temperature, and then the toilet seat heater 450 is driven by the heater driving unit 402 so that the temperature of the heating toilet seat 400 is increased. It is heated instantly to the toilet seat set temperature. Therefore, even when the user is seated on the toilet seat 400 relatively early, comfortable use is possible without feeling cold.

  In FIG. 7, 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 900 includes a main body 200, a remote operation device 300, a heated toilet seat 400, and a lid 500.

  A heating 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 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, due to efficient heat transfer from the toilet seat heater 450, the seating surface 410U rises rapidly 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, by promptly raising the temperature of the heating toilet seat 400, a sanitary washing device that enables a user to have a comfortable toilet in the toilet room is obtained. Even if water is generated in the toilet seat heater 450, it is possible to prevent water from entering the toilet seat heater 450, and a sanitary washing device capable of ensuring and maintaining electrical insulation and safety can be obtained.

  Note that the structure for preventing water intrusion at the boundary portion P facing the outer peripheral end face where the first waterproof insulating foil 453 and the second waterproof insulating foil 451 are joined in the present embodiment is performed by the heat-fusible adhesive layer 452b. However, a structure may be adopted in which one end portion of the first waterproof insulating foil 453 or the second waterproof insulating foil 451 is folded back so as to cover the other outer peripheral end surface and bonded by a heat-fusible adhesive layer 452b. .

(Embodiment 2)
FIG. 8 is an enlarged sectional view of a main part of the heating toilet seat according to the second embodiment of the present invention. This embodiment is basically the same as the configuration shown in FIGS. 2 to 7 in the first embodiment, and in FIG. 8, the same reference numerals as those in the first embodiment have the same structure. The configuration, operation, and action of the toilet seat heater will be described focusing on the differences from the first embodiment.

  In FIG. 8, the difference from Embodiment 1 is that the linear heating element 460a of the toilet seat heater 450a has a heat resistance of, for example, 260 ° C. as an enamel layer 463b of the linear heating element 460 and a second insulating layer. A fluororesin such as a perfluoroalkoxy mixture (hereinafter referred to as PFA layer 462) is coated.

  About the process which comprises the toilet seat heater 450a used for the heating toilet seat 400a, it is as substantially the same as Embodiment 1, and description is abbreviate | omitted. 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 460a having a double thin film insulating coating such as an enamel layer 463b and a PFA layer 462 on the heating wire 463a is obtained. The outer diameter stays in the range of 0.3 to 0.50 mm, and in this example, it can be about 0.35 mm, ensuring the withstand voltage, and from the heating wire 463a through the second waterproof insulating foil 451, Of course, the heat conduction to the seating surface 410U can be performed very quickly.

  As described above, the toilet seat heater 450a reliably prevents water from entering the boundary portion P facing the outer peripheral end surfaces of the first waterproof insulating foil 453 and the second waterproof insulating foil 451, and ensures multiple insulation properties. Since the temperature of the seating surface 410U can be raised in a sufficiently short time, the heated toilet seat 400a that ensures electrical insulation, safety, and comfort can be provided. The present embodiment can also be applied to the invention of the first embodiment.

(Embodiment 3)
FIG. 9 is an enlarged cross-sectional view of a main part of the heating toilet seat according to Embodiment 3 of the present invention. This embodiment is basically the same as the configuration shown in FIGS. 2 to 7 in the first embodiment, and also in FIG. 9, the same reference numerals as those in the first embodiment have the same structure. The configuration, operation, and action of the toilet seat heater will be described focusing on the differences from the first embodiment.

  In FIG. 9, the difference from Embodiments 1 and 2 is that the thickness of the adhesive layer 452a of the second waterproof insulating foil 451 is the adhesive layer of the first waterproof insulating foil 453 of the toilet seat heater 450b used in the heating toilet seat 400b. An adhesive layer 452c having a thickness of 0.07 mm, which is larger than the thickness, is used.

  Since the adhesive layer of the first waterproof insulating foil 453 is a relatively thick adhesive layer 452c, it is not necessary to use a heating roller laminator in the process of constructing the toilet seat heater 450b, thereby reducing the energy required for heating. In addition, it is easy to hold the arrangement pattern of the linear heating elements 460a, and the first waterproof insulating foil 453a is attached to the non-adhesive layer side of the second waterproof insulating foil 451. Even if a flaw 455 is generated at the time, a part of the pressure-sensitive adhesive layer 452c wraps around the portion of the flaw 455 due to the fluidity of the pressure-sensitive adhesive layer 452c. Toilet seat heater 450b can be obtained in which the waterproof property of boundary P desired on the outer peripheral end face of insulating foil 451 is more reliably obtained. As a result, the yield during production of the heated toilet seat 400b can also be improved.

  This embodiment can also be applied to the inventions of the first and second embodiments.

  As described above, the toilet seat heater of the present invention and the heating toilet seat using the toilet seat ensure the safety by reliably insulating the toilet seat and the heating wire even when an abnormality such as flooding occurs in the heating toilet seat. In addition, since the temperature of the toilet seat can be increased quickly, the toilet seat can be applied not only to the heating toilet seat but also to a heating device that assumes contact with the user.

The principal part expanded sectional view of the heating toilet seat in Embodiment 1 of this invention Front view of toilet seat heater in the first embodiment The exploded perspective view of the heating toilet seat in Embodiment 1 The state figure which stuck the toilet seat heater in Embodiment 1 on the seating surface Partial enlarged view of region x of the toilet seat heater shown in FIG. 2 in the first embodiment The conceptual diagram of the control block of the heating toilet seat in Embodiment 1 The perspective view of the sanitary washing apparatus comprised with the heating toilet seat in the Embodiment 1 The principal part expanded sectional view of the heating toilet seat in Embodiment 2 of this invention The principal part expanded sectional view of the heating toilet seat in Embodiment 3 of this invention Front view of a conventional heated toilet seat

Explanation of symbols

400, 400a, 400b Heated toilet seat 410U Seating surface 450, 450a, 450b Toilet seat heater 451 Second waterproof insulating foil 452a, 452c Adhesive layer 452b Heat-bondable adhesive layer 453 First waterproof insulating foil 460, 460a Linear heat generation Body 462 PFA layer 463a Heating wire 463b Enamel layer

Claims (10)

A heat generating wire and a thin insulating layer covering the outer periphery thereof, comprising a linear heating element provided on the back side of the toilet seat, a first waterproof insulating foil and a second waterproof insulating foil, the first waterproof insulating foil, The linear heating element is sandwiched between the second waterproof insulating foil, and the boundary portion facing the outer peripheral end surface where the first waterproof insulating foil and the second waterproof insulating foil are joined has a water-inhibiting structure. Toilet seat heater. The first waterproof insulating foil and the second waterproof insulating foil are provided with an adhesive layer on the surface of the first waterproof insulating foil that is not joined to the toilet seat, and the first waterproof insulating foil and the second waterproof insulating foil The toilet seat heater according to claim 1, wherein a linear heating element is sandwiched between the foil and the non-adhesive layer, and the first waterproof insulating foil is adhered to the second waterproof insulating foil. The toilet seat heater according to claim 1 or 2, wherein a polyester resin foil is used for the first waterproof insulating foil and the second waterproof insulating foil. The toilet seat heater according to any one of claims 1 to 3, wherein the polyester resin foil is one of polyethylene terephthalate, polyesterimide, polyamideimide, and polyimide. The adhesive layer of the first waterproof insulating foil uses a heat-fusible adhesive layer, and the adhesive layer of the second waterproof insulating foil joined to the toilet seat uses an adhesive layer according to any one of claims 1 to 4. The toilet seat heater described. The toilet seat heater according to any one of claims 1 to 5, wherein an adhesive layer is used as an adhesive layer between the first waterproof insulating foil and the second waterproof insulating foil. The toilet seat heater according to claim 6, wherein the adhesive layer of the first waterproof insulating foil is configured to be thicker than the adhesive layer of the second waterproof insulating foil. The toilet seat heater according to any one of claims 1 to 7, wherein the linear heating element comprises at least an enamel layer in an insulating layer of the heating wire. The toilet seat heater according to claim 8, wherein the linear heating element includes a plurality of insulating layers of heating lines, an enamel layer as an innermost layer, and a fluorine-containing resin layer as an outermost layer. A heating toilet seat comprising a seating surface containing a metal material and the toilet seat heater according to any one of claims 1 to 9, wherein the adhesive layer side of the second waterproof insulating foil is adhered to the back surface of the seating surface.

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