JP5597910B2 - Heating toilet seat and toilet device equipped with it - Google Patents

Description

  The present invention relates to a toilet seat having a heating function.

Conventionally, in this type of heated toilet seat, as shown in FIG. 7, a sheet heating element 101 is embedded in a seat portion of a horseshoe-shaped toilet seat made of synthetic resin. In the sheet heating element 101, a cord-like heater 105 having an outer diameter of 1 mm or less having a fluororesin insulating film 104 is sandwiched between a metal foil sheet 102 and an adhesive tape 103 by a continuous wiring pattern having a substantially long U shape. Is.
Actually, the resistance wire 106 in which seven 0.05 mm nickel chrome alloy wires are twisted 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, thermal expansion occurs when the cord-like heater 105 is energized and the resistance wire 106 generates heat, and in particular, the degree of expansion tends to be high in the longitudinal direction of the substantially long U shape. .

  Further, in the heating toilet seat, in order to maintain the heat retaining function, ON / OFF control of energization is performed, and accordingly, the resistance wire 106 of the cord-like 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 the cord heater 105 is continuously amplified. The heating and cooling performance of the toilet seat may be lost because the portion that is most bent and stretched may break.

  In addition, when the toilet seat is made of a heat-conducting material and is heated instantaneously only when it is used, energy saving is required. In a few seconds, the user needs to warm up to the cool sensation limit temperature at which the user does not feel cold. When the temperature of the toilet seat surface is raised from 5 ° C. to 29 ° C. assuming the winter season, the heater wire temperature rises by about 100 to 150K. As described above, in the instant heating toilet seat, when the heater line temperature becomes very high and the temperature distribution due to the heater wiring pattern is uneven, the line temperature becomes locally high. Since the elongation due to thermal expansion is larger than that of the heater, and the degree of bending and stretching of the heater is also increased, it has been a problem to shorten the time to break.

  The present invention has been made in view of the above problems, and provides a heating toilet seat that can suppress the influence of heat and can maintain the heater performance for a long time as a heater pattern that minimizes the influence of repeated thermal expansion and contraction. Objective.

A heated toilet seat according to the present invention includes a seat portion, a toilet seat body disposed below the seat portion, and a cord-like heat generation formed in a meandering manner by a set of 180 ° folded portions disposed on the inner surface of the seat portion. The seat is divided into a plurality of regions, the lengths of the cord-like heating elements per unit area of each region are made substantially equal, and the upper foil body and the lower foil body are on one side of the aluminum foil material be those where there is an insulating sheet, said clamping the cord-like heating element, the lower foil and adhered the upper foil between them with aluminum foil side between the lower foil member and the upper foil adhered with The end face of the body is sealed with an insulating member, the upper foil body is attached to the inner surface of the seating portion, and the cord-like heating element is arranged close to the toilet seat body fitting portion and formed in a meandering shape. In a region where the temperature is higher than the other part of the cord-like heating element It is short for straight section length of the cord-shaped heating element.

According to the above invention, in a specific part of the heating element that is hotter than other parts, distortion due to expansion and contraction is also increased, but the length of the linear part of the cord-like heating element disposed in that part is shortened, The breakage can be suppressed by minimizing the influence of heat. Then, the upper foil and Shitahakutai is a in which one side of the aluminum foil member is an insulating sheet, the code between them with aluminum foil side between the lower foil member and the upper foil adhered with the Jo heating element sandwiched, the end face of the lower foil and the upper foil adhered sealed with the insulating member, a heating toilet seat was attached to the upper foil member to the inner surface of the seat, insulation It can be greatly improved.

  As described above, according to the present invention, it is possible to provide a heated toilet seat in which the heating performance is not impaired over a long period of time.

The invention according to claim 1 is a cord formed in a meandering manner by a set of a seat portion, a toilet seat body disposed below the seat portion, and a 180 ° folded portion disposed on the inner surface of the seat portion. A heating element, the seating portion is divided into a plurality of regions, the cord-like heating element length per unit area of each region is substantially equal, and the upper foil body and the lower foil body are one side of an aluminum foil material be those where there is an insulating sheet, the lower they were sandwiching the cord-like heating element between the upper foil adhered with aluminum foil side to each other and the lower foil, and the upper foil adhered The end surface of the foil body is sealed with an insulating member, the upper foil body is attached to the inner surface of the seating portion, and the arrangement of the cord-like heating element is dense in the vicinity of the toilet seat body fitting portion, in a meandering manner. In a region where the temperature is higher than other portions of the cord-like heating element formed A heating toilet seat in which the length of the linear portion of the cord-like heating element is shortened, and in a specific part of the heating element that is hotter than other places, distortion due to expansion / contraction increases, but the cord-like shape disposed in that part By shortening the length of the straight portion of the heat generating element and reducing the influence of heat as much as possible, breakage of the cord-shaped heat generating element can be suppressed. And, having an insulating sheet on one side, the cord-like heating element is sandwiched between the upper foil body and the lower foil body bonded on the aluminum foil bodies side, and the end surfaces of the bonded upper foil body and lower foil body are It is a heated toilet seat that is sealed with an insulating member and has an upper thermal conductive foil attached to the inner surface of the seating portion, and the insulation can be greatly improved.

  The falling height of the edge of the seating part varies depending on the place of the seating part, and this part is difficult to form a cord-like heating element for fitting with the toilet seat body, and the amount of heat radiation from there becomes large . By adopting a configuration that increases the watt density on the side where it is difficult to configure the cord-like heating element as described above, the uniformity of the temperature distribution of the seating portion is improved.

In terms of heating the seating part, when attention is paid to each part of the seating part, the following parts are particularly required to be heated to high temperatures. In particular, the portion of the seating portion that is in contact with the user's thigh, etc., needs to be heated to a particularly high temperature in preparation for seating, and to be at a temperature sufficient for seating. When seated, the surface of the toilet seat is covered with the human body and does not dissipate heat. However, since the human body is deprived of heat, it is necessary to increase the temperature compared to the surroundings. Also, the place where safety devices such as thermostats and thermal fuses are installed is to prevent the heat-generating body heat from being deprived of the heat capacity of these safety devices, and the rate of temperature rise on the seating surface of that part is reduced. Raise the density of the cord-shaped heating elements and increase the temperature around the location where the safety device is installed and the surrounding area. In certain parts of the heating element that are hotter than these other parts, distortion due to expansion and contraction also increases, but the length of the linear part of the cord-like heating element arranged in that part is shortened to reduce the influence of heat. The breakage can be suppressed by making it as small as possible. Also, if the former and the latter are designed in accordance with the actual design, the arrangement density of the heating elements is different, and the actual temperature rise is different, but even in that case, the degree of expansion of the cord-like heating element according to the temperature rise Therefore, it is possible to cope with each part individually by changing the length of the straight line portion.

The invention according to claim 4 is a toilet apparatus in which, in any one of the first to third inventions, a heated toilet seat having a seating portion made of a heat conducting material is mounted on a toilet. Because the seating part is a heat conducting material, the toilet seat is instantaneously heated compared to a heated toilet seat that uses a conventional resin material for the seating part, and the user's entry into the toilet room is detected. Because it can provide a sufficiently comfortable warmth even when energized, the toilet seat can be turned off when there is no user, and the toilet seat is equipped with a heated toilet seat that saves energy. It becomes the toilet device of the function.

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

(Embodiment 1)
1A and 1B are arrangement diagrams of the heating element 4 of the heating toilet seat 1. FIG. 2 shows a top view of the seating portion 3 of the heating toilet seat 1. FIG. 3 shows the a1-a1 cross section and the a2-a2 cross section of FIG. FIG. 4 shows an enlarged cross-sectional view of the heating element 4.

  The heating toilet seat 1 is made of synthetic resin or the like, and has a toilet seat body 2 containing various functional units attached to the toilet seat device, and a thermally conductive plate material such as aluminum having a thickness of about 1 mm provided above the toilet seat body 2 (for example, And a seating portion 3 formed by molding a highly conductive plate material such as aluminum having a thermal conductivity of 237 W / (m · K) and copper of 420 w / (m · K). Since the seat portion 3 is made of a thermally conductive plate material, toilet seat heating only when necessary, for example, entering a toilet room is detected by a human body detection sensor, and the seat portion 3 is quickly moved between entrance and seat. The temperature can be raised thermally, and heating to the seating portion 3 can be stopped or maintained at a heat retention temperature lower than a predetermined temperature when unnecessary, thus saving energy.

A heating element 4 is disposed on the inner surface of the seat 3. That is, the heating element 4 employs a cord-like heating element 7 in which an enameled wire 5 is covered with an insulating material 6 and is held between the upper and lower foil bodies 8 and 9 in a meandering manner. The enameled wire 5 has an outer diameter of 0.254 mm, in which a copper wire 10 having an outer diameter of 0.25 mm is coated with an insulating coating 11 having a coating thickness of 0.012 mm made of PAI or PI, and the outer periphery is made of PFA or the like. It is the structure of the coaxial cable shape further coat | covered with the insulating coating 6 with a coating thickness of 0.12 mm. It said upper clamping enamel wire 5, under the foil 8,9 is used 0.05mm aluminum foil material, their opposing surfaces, that is, PET having a thickness of 0.025mm on enameled wire clamping face The heat-resistant insulating layers 12 and 13 are applied. The upper and lower foil bodies 8 and 9 are integrated by adhering the heat-resistant insulating layers 12 and 13 with an adhesive, and the upper foil body 8 is also bonded to the inner surface of the seat portion 3 through the adhesive. It is. At this time, above with rolling, that continue to adhere Shitahakutai 8,9, the air pocket produced by bonding a minimal ones, on the cord-shaped heating element 7, the bottom foil body 8,9 Improve the thermal conductivity. Thus, code-like heating element 7, insulating coating 11 of the enameled wire 5, the insulating material 6 that covers it, further on, the triple insulation measures of a heat insulating layer 12, 13 of the lower foil body 8,9 Because it has been applied, it is very safe. In addition, when the cord-like heating element 7 is sandwiched, it adheres to the seating portion 3 on the foil body 8 side, which is a flat surface without unevenness, so that the generation of unnecessary bubbles serving as a heat insulating layer is suppressed, and the seating portion 3 Improve surface temperature uniformity.

The specific arrangement of the heating elements 4 is configured by a U-shaped set having a straight portion length of 80 mm or less. The U-shape is arranged substantially symmetrically at a certain angle α with respect to the direction of the center line 14 of the seating portion 3, and the length of the U-shaped linear portion increases as α is reduced. By adjusting this α, the length of the straight portion of the cord-like heating element 7 can be adjusted. Further, the length of the cord-like heating element 7 can be locally adjusted by adjusting the distance L1 between the lines and the distance L2 between the left and right U shapes for each U shape. Since the arrangement is a target with respect to the center line 14, the adjustment can be easily made so as to obtain a uniform temperature distribution. The U-shaped portion is R4 to R7 in the present embodiment.

  The heating element 4 holds the cord-like heating element 7 by the upper and lower foil bodies 8 and 9, but since the toilet seat heating is repeatedly performed, an influence due to a heat change occurs. At this time, the adhesive used for bonding is softened at a high temperature, and the held cord-like heating element 7 itself is thermally expanded at a high temperature to cause “elongation” and move from the held state. There is. At that time, the longer the straight line portion, the larger the difference in expansion and contraction between the normal temperature and the high temperature, and a situation occurs such that a part of the straight line portion is bent or lifted in a stuck state. Then, when the temperature is raised, heat is not emitted to the upper and lower foil bodies 8 and 9 at the portion where the floating occurs, and the cord-like heating element 7 is locally overheated, and the covering material is broken or disconnected. Therefore, it is necessary to set the wiring pattern so as to minimize the influence of expansion and contraction when repeatedly raising the temperature, and it has become clear that the length of the straight portion and the repetition of the bent portion are greatly involved. The bent shape of the U-turn part can absorb the influence of this expansion and contraction to some extent, so it has a structure with a moderately long straight part and bent part to minimize the influence of temperature changes due to repeated high temperatures. It becomes a very big subject to hold down and make the optimal arrangement pattern which can make the seating part heating temperature of a toilet seat uniform by shortening the full length of the cord-shaped heating element 7 as much as possible. An example of an arrangement pattern that can solve this problem is this configuration.

  The seat portion 3 of the toilet seat has a complicated cubic curved surface shape. When the heating element 4 in which the cord-like heating element 7 is meandered is pasted, the bent portion absorbs the twist of the line, which is convenient.

The shape of the seat portion 3 of the toilet seat is a complicated cubic curved surface. Since the surface area changes depending on the uneven surface of each place of the seat portion 3, the heat radiation from the surface of the seat portion 3 also changes. Further, since the rising portion of the edge difficult to dispose the heating element 4, large heat dissipation in the edges near the so varies the radiation amount by the difference of the falling height of the edge code at a uniform distance between lines When the heating elements 7 are arranged, the surface temperature of the seating portion 3 is uneven. However, in this arrangement, since the U-shaped U-turn portion is configured in the vicinity of the edge, the watt density in the vicinity of the U-turn portion separation is increased, which is convenient. In addition, since the cord-like heating element 7 to be wired is a coaxial cable, it can be bent and arranged without worrying about the directionality unlike a surface heater or the like. Further, by adjusting the angle α and between lines distance L1, U-shaped distance L2 when it is this structure, cord-shaped in large part of the heat dissipation due to the high rise of the surface area is wide portion or edge for the irregularities of the seat 3 Since the heating elements 7 can be arranged densely, and conversely, the cord-like heating elements 7 can be arranged roughly in places where heat dissipation is low, so that the density can be locally provided in the entire heating element. The surface temperature distribution of No. 3 is uniform and uniform. Specifically, the heating element density is arranged so as to be coarse in the region A1 and dense in the region A2. As the cross-sectional view of FIG. 3, compared to the region A1, for narrow area of the rising high seat 3 edge in the region A2, the proportion of the area of the part that can not be disposed relatively code-like heating element 7 large. Therefore, the watt density of the entire seating portion 3 can be made substantially uniform by arranging it more densely than the region A1 in consideration of heat radiation from there. That is, it is possible to make the temperature distribution uniform by setting the length of the cord-like heating element per unit area to be substantially equal for each divided region.

In the configuration described above, when heat is generated by energizing the cord-shaped heating element 7, the top heat is transferred to the seat portion 3 from the lower foil body 8,9, and warming the entire surface to a predetermined heating temperature Become. Up, down foils 8 and 9 since the form of those two vertically are integrated, transmitted almost thermal the thermal conductivity tends to upper foil element 8, which is conducted to the lower foil 9, effective The heat transfer to the seating portion 3 is performed.

Since the cord-like heating element 7 has a different watt density in each region, but the wiring pattern is adjusted so that the temperature rise values are substantially equal, the surface temperature of the entire seating portion 3 becomes uniform, and the expansion / Distortion due to shrinkage is minimized, and breakage of the cord-like heating element 7 can be suppressed. Furthermore, since the length of the straight portion is as short as 80 mm or less, the enamel wire with a linear expansion coefficient of 16.8 × 10 −6 has an elongation at a temperature rise of 150 K of 0.2 mm or less, and the change in length due to thermal expansion is extremely small. Thus, since stress due to thermal expansion is reduced, damage or the like can be suppressed even after long-term use. Further, in this wiring pattern, a large number of U-shaped 180 ° folded portions that serve as buffering sites for the expansion and contraction of the cord-like heating element 7 can be configured efficiently in space, so that the extension and contraction of the cord-like heating element 7 due to thermal expansion can be achieved. The influence of can be reduced. In addition, on the thermal expansion and contraction of the cord-like heating element 7 is small, adhesion may become the long-term can be preferably maintained with respect to the lower foil body 8,9, thereby warming efficient seat 3, and surely Is something that can be done.

Further, as shown in FIG. 4 (b), the cord-shaped heating element 7 is configured such that the heat-resistant insulating layers 12 and 13 are placed on the outer side with respect to the enameled wire 5 and the lower foil bodies 8 and 9 are configured. after, on integrated, also conceivable arrangement for sealing the end face of the lower foil body 8,9 of an insulating member 15. In this configuration, in terms of keeping the structure the same triple insulation in FIG. 4 (a), on the NetsuRyo-conductive immediately outside the enameled wire 5, because of the lower foil body 8,9, cord-shaped heat quickly above the heating element 7, endothermic by the temperature distribution is uniform under the foil 8 and 9, it is possible to suppress the result because the line temperature of the copper wire 10 is also lowered the cord-shaped heating element 7 fracture.

  On the other hand, when the user is seated, first, the user feels cold, and the wiring density of the cord-like heating element 7 around the area A3, which is the area where the thigh having a large contact area will contact, is relatively high. It is also possible to reduce the density of the remaining area and to make the temperature distribution on the toilet seat surface uneven. By doing so, it is possible to provide an instant heating toilet seat with higher comfort.

In addition, a temperature measuring unit 16 in which a part of the cord-shaped heating element 7 is meandered is formed, and a return thermostat using bimetal or the like is installed in the temperature detecting unit 16. For example, when the seating portion 3 reaches an unexpected abnormal temperature, the reset thermostat is opened to temporarily stop energization and shut off the power supply. A plurality of such densely meandering portions may be provided as many as the number of safety devices. In addition, since the portion where the linear density of the temperature measuring portion is high has a high temperature rise and the heat influence is larger than other portions, the length of the straight portion is 15 to 20 mm in the present embodiment than the seating portion. It is shorter than the part of FIG. With this configuration, the thermal effect of this portion is also alleviated and disconnection is suppressed.

(Embodiment 2)
5A and 5B show arrangement diagrams of the heating element 4 of the heating toilet seat 1. This arrangement is different from that of the first embodiment, and the rest is the same as that of the first embodiment. The same reference numerals are given to the components that perform the same operation, and the detailed description is the same as that of the first embodiment. .

A specific arrangement of the cord-like heating elements 7 is configured by a U-shaped set with a straight portion length of 80 mm or less. The U-shapes are arranged parallel to the left and right with respect to the central direction of the seating portion 3, and are arranged by forming blocks as indicated by dotted lines B in the figure. The temperature distribution can be adjusted in a direction perpendicular to the center line 14 of the seating portion 3 by changing the distance L3 between the U-shaped lines arranged in parallel. Specifically, the falling height of the edge of the seat portion 3 varies depending on the location of the seat portion 3, and this portion is difficult to form the cord-like heating element 7 for fitting with the toilet seat body 2. , The amount of heat released from it increases. Therefore, the temperature distribution can be made uniform by increasing the inter-line distance L3 at the center of the seating part 3 and decreasing the inter-line distance L3 toward the edge. That is, since the U-shape of the cord-like heating element 7 is arranged in the direction along the center line 14, the density of the watt density in the direction perpendicular to the center line 14 is easy to adjust. .

Further, the shape of the seat portion 3 of the toilet seat is a complicated cubic curved surface, and the surface area varies depending on the unevenness of each place of the seat portion 3. Therefore, by changing the line distance L3 for each block, the line density for each block can be adjusted, and the temperature distribution of the heating toilet seat 1 can be made uniform as a whole.

  Furthermore, this arrangement can be configured with a linear distance of the cord-like heating element 7 of about 30 to 50 mm, so that the expansion of the cord-like heating element 7 when the temperature rises becomes smaller and the cord-like Since the number of U-shaped U-turn portions serving as buffer zones for the expansion of the heating element 7 also increases, the breakage of the cord-like heating element 7 can be further suppressed.

(Embodiment 3)
FIG. 6A and FIG. 6B show arrangement diagrams of the heating element 4 of the heating toilet seat 1. This arrangement is different from that of the first embodiment, and the rest is the same as that of the first embodiment. The same reference numerals are given to the components that perform the same operation, and the detailed description is the same as that of the first embodiment. .

The specific arrangement of the heating elements 4 is configured as a U-shaped set with a straight portion length of 80 mm or less. The U-shape is arranged so as to have a straight portion in the left-right direction when seated. The temperature distribution in the front-rear direction of the seating section 3 can be adjusted by changing the line-to-line distances L4 and L5 of the cord-like heating element 7 , and the temperature distribution in the left-right direction of the seating section 3 can be adjusted by changing the line-to-line distance L6.

Further, since almost all the U-shapes are parallel, when sandwiched between the upper foil body 8 and the lower foil body 9 , bubbles are difficult to enter simply by rolling from a certain direction. A configuration in which air bubbles can be surely eliminated is preferable because occurrence of movement and floating of the cord-like heating element 7 can be minimized.

  Considering the region as indicated by the dotted line C in the figure, the temperature distribution of the heating toilet seat 1 as a whole can be adjusted by adjusting L4, L5, and L6 for each region according to the surface shape of the seat portion 3 that is a cubic surface. Uniformity can also be achieved.

  As is apparent from the above embodiment, the essence of the present invention is that the configuration of the heating element 4 is constituted by a cord-like heating element 7 meandering as a set of U-shaped short straight portions. The heating element 7 is not limited to the enamel wire 5, and may be a thicker linear one or a plurality of twisted ones. In addition, it can be developed not only for an immediate heat type seating section but also for a normal heating toilet seat that maintains the heating temperature at all times.

  As described above, the heated toilet seat according to the present invention has an improved temperature characteristic of the seating portion and can provide a comfortable toilet.

(A) Front view showing arrangement of heating elements of heating toilet seat in embodiment 1 of the present invention (b) Right side view (c) Left side view (d) Bottom view (e) Top view (F) Rear view of heating element of heating toilet seat in embodiment 1 of the present invention Top view of the seating portion of the heating toilet seat in the first embodiment (A) A1-A1 sectional view of the top view of the seating part of the heating toilet seat in the first embodiment (b) A2-A2 sectional view (A) Enlarged sectional view of the heating element in the first embodiment (b) Explanatory drawing of the sealing configuration of the heating element (A) Front view showing arrangement of heating elements of heating toilet seat according to embodiment 2 (b) Right side view (c) Left side view (d) Bottom view (e) Top view (F) Rear view of heating element of heating toilet seat in embodiment 2 (A) Front view showing arrangement of heating elements of heating toilet seat according to embodiment 2 (b) Right side view (c) Left side view (d) Bottom view (e) Top view (F) Rear view of heating element of heating toilet seat in embodiment 3 (A) The figure which shows the heater wiring of the conventional sanitary washing apparatus (b) Sectional drawing of the heater attachment part of the toilet seat of the apparatus

DESCRIPTION OF SYMBOLS 1 Heating toilet seat 2 Toilet seat main body 3 Seating part 4 Heating body 5 Enamel wire 6 Insulating material 7 Cord-like heating body 8 Upper foil body 9 Lower foil body 10 Copper wire 11 Insulation coating 12, 13 Heat-resistant insulating layer 14 Center line 15 Insulating member

Claims (4)

A seat portion, and a toilet seat body disposed below the seat portion;
A cord-like heating element formed in a meandering manner by a set of 180 ° folded portions disposed on the inner surface of the seating portion;
The seat portion is divided into a plurality of regions, the lengths of the cord-like heating elements per unit area for each region are made substantially equal, and the upper foil body and the lower foil body have an insulating sheet on one side of the aluminum foil material a is, they were sandwiching the cord-like heating element between the upper foil adhered with aluminum foil side to each other and the lower foil, the insulating end faces of the lower foil and the upper foil adhered Sealed with a member, the upper foil body is attached to the inner surface of the seating portion, and the cord-like heating element is disposed close to the toilet seat body fitting portion, and the cord-like heat generation is formed in a meandering shape. A heating toilet seat in which the length of the straight portion of the cord-like heating element is shortened in a region where the temperature is higher than that of other parts of the body. The heating toilet seat according to claim 1, wherein the cord-like heating element is formed of an enameled wire. The heating toilet seat according to claim 2, wherein the enameled wire is further coated with an insulating coating. The toilet apparatus which mounted | wore the toilet bowl with the heating toilet seat of any one of Claims 1-3 which comprised the said seating part with the heat | fever conducting material.