JP2010075533A - Warm toilet seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warm toilet seat with entire warm surface having a surface heater which is possible to be pasted on a toilet seat frame of complicated three-dimensional curved surface shape. <P>SOLUTION: A warm toilet seat 10 includes a toilet seat frame 20, and a surface heater 30 which is pasted to the toilet seat frame 20 to warm the toilet seat frame 20. The surface heater 30 includes: an insulation sheet 32; a plurality of heating strips 33 which is formed by resistance coating material radially printed on the insulation sheet 32; an insulating coating layer 34 which is formed by the insulation coating printed on heating strip 33; a plurality of radiating feeders 35 which is formed by conductive coating material radially printed along the heating strip 33 on insulating coating layer 34 and are joined to an end of heating strip 33; a connection line 36 which is formed by conductive coating material radially printed to connect a plurality of radial feeders 35; and a plurality of cuts 31 which are formed so as to avoid the heating strip 33, radial feeders 35 and connection lines 36. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heated toilet seat.

  A conventional heated toilet seat includes a toilet seat outer shell obtained by vacuum forming a thermoplastic resin material, a conductive paint layer applied to the inner surface of the toilet seat outer shell, and a thermoplastic resin material that covers the conductive paint layer. And a backing layer by injection molding. First, a conductive paint is applied to a sheet made of a thermoplastic resin material, and the conductive paint layer is vacuum-formed toward the inside of the toilet seat outer shell to form the toilet seat outer shell. In vacuum forming, a conductive current-carrying member is attached to supply current from the outside. Next, the toilet seat backing layer is formed by injection molding a thermoplastic resin material so as to cover the entire area of the conductive paint layer. (For example, refer to Patent Document 1).

Moreover, the conventional heating toilet seat is provided with a planar heater having a large positive resistance temperature coefficient inside the toilet seat. The planar heater is made of a carbon heater and is attached in close contact with the upper surface of the toilet seat (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 55-133900 JP 59-218131 A

  However, in the heated toilet seat of Patent Document 1, it is difficult to attach a sheet of thermoplastic resin material coated with a conductive paint to a complicated three-dimensional curved toilet seat casing. In order to attach the sheet to the toilet seat housing having a complicated shape, it is necessary to make a cut in the sheet. However, if the cut is made in the conductive paint layer, the conductive paint layer is exposed, and there is a risk of leakage. is there. Moreover, since the layer of the conductive paint is exposed when the cut is made, there is a possibility that the layer of the conductive paint is corroded due to adhesion of moisture or air oxidation.

  Moreover, in the heating toilet seat of patent document 2, it is difficult to affix the planar heater which has a big positive resistance temperature coefficient on the toilet seat housing of a complicated three-dimensional curved surface shape. In order to attach the planar heater to the toilet seat housing having a complicated shape, it is necessary to make a cut in the planar heater. However, if a cut is made in the planar heater, a conductive part is exposed, which causes electric leakage. There is a fear. In addition, if a cut is made, corrosion may occur due to moisture adhesion or air oxidation.

  The present invention has been made in view of the above problems, and has an object to provide a heated toilet seat that includes a planar heater that can be attached to a toilet seat housing having a complicated three-dimensional curved surface shape and is warm on the entire surface. .

In order to solve the above-mentioned problem, the invention according to claim 1 is a heating toilet seat comprising a toilet seat housing and a planar heater attached to the toilet seat housing and warming the toilet seat housing, wherein the planar heater is provided. Is an insulating sheet, a plurality of strip-shaped heating elements formed by radially printing a resistor paint on the insulating sheet, and an insulating coating layer formed by printing an insulating paint on the strip-shaped heating element, A plurality of radial power supply lines that are formed by printing a conductive paint radially along the belt-like heating element on the insulating paint layer and joined to an end of the belt-like heating element, and the plurality of radial power supply lines are connected. And having a connection line formed by printing the conductive paint,
It is characterized by comprising a plurality of incisions formed radially up to a predetermined distance where energization of the belt-like heating element, the radial power supply line and the connection line is maintained.

  The invention according to claim 2 is characterized in that the belt-like heating element contains an insulating resin and conductive carbon particles and has a positive resistance temperature characteristic.

  The invention according to claim 3 is characterized in that the plurality of belt-like heating elements are connected in parallel by the radial power supply line and the connection line.

  In the first aspect of the present invention, the planar heater includes a plurality of radially formed cuts, and therefore, even a complicated three-dimensional curved toilet seat housing can be applied to the entire surface without wrinkling. Moreover, since it is possible to arrange a plurality of strip-like heating elements to every corner in a radial manner, it is possible to warm the entire surface of the portion that is touched by a person when sitting on the heating toilet seat. Further, the sheet heater has improved corrosion resistance and insulation properties by an insulating sheet on which the belt-like heating element is printed and an insulating paint layer printed on the belt-like heating element. Further, the insulating sheet and the insulating paint layer can prevent the belt-like heating element, the radial power supply line, and the connection line from being damaged during assembly. In addition, the planar heater can be produced at a low cost by a series of printing processes of resistor paint, insulating paint, and conductive paint.

  In the invention described in claim 2, since the belt-like heating element has a positive resistance temperature characteristic, the temperature safety is high, and the control circuit can be simplified.

  In the invention according to claim 3, since the plurality of belt-like heating elements are connected in parallel by the plurality of radial feeding lines and connection lines, to the band-like heating element where one radial feeding line is disconnected and connected Even if the current is not energized, the energization of the belt-shaped heating element connected to the other radial feeder is continued. Therefore, it is possible to continue to function as a heating toilet seat, and the resistance to disconnection is higher than that of a series wiring heater.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall perspective view showing a toilet 1 provided with a heating toilet seat 10 of the present invention. The heating toilet seat 10 is rotatably provided on the toilet 70, and can be used by being placed on the upper side of the toilet 70 and sitting on the toilet 70 or keeping the state of being rotated upward. . The toilet 70 further includes an upper lid 80 that covers the upper side of the heating toilet seat 10, but is not limited thereto, and the upper lid 80 may not be provided. On the back surface of the toilet bowl 70, a tank 90 for storing water to be passed to the toilet bowl 70 is provided.

  FIG. 2 is a perspective view of the heating toilet seat 10 of the present invention as viewed from above. The heating toilet seat 10 has a substantially ring shape or a horseshoe shape. The outer periphery on the back side of the heating toilet seat 10 has a linear shape, and the outer periphery on the near side has a curved shape, and is generally D-shaped as a whole. The inner circumference of the heating toilet seat 10 has a curved shape with different curvatures on the back side and the near side.

  FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 showing the heating toilet seat 10 of the present invention. The heating toilet seat 10 includes an outer peripheral wall portion 21 extending substantially vertically downward from the outer periphery in the AA cross section, a horizontal portion 22 extending from the outer periphery to the horizontal inner side, an inclined portion 23 extending from the inner side of the horizontal portion to the inner periphery, and an inner periphery A toilet seat housing 20 having an inner peripheral wall portion 24 extending substantially vertically, and a sheet heater attached to the back side of the toilet seat housing 20 along the outer peripheral wall portion 21, the horizontal portion 22, the inclined portion 23, and the inner peripheral wall portion 24. 30. A toilet seat back cover 60 is attached to the lower side of the toilet seat housing 20 via a packing 50 in order to prevent moisture due to water splashing or condensation. As described above, the toilet seat housing 20 to which the planar heater 30 is attached has a complicated three-dimensional curved surface shape.

  FIG. 4 is a plan view of the toilet seat housing 20 to which the planar heater 30 is attached as viewed from the planar heater 30 side. As shown in FIG. 4, the planar heater 30 includes a plurality of radial cuts 31 on the outer peripheral portion and the inner peripheral portion. By this cut 31, the planar heater 30 can be attached to the toilet seat housing 20 having a complicated three-dimensional curved surface without forming wrinkles or tension.

  FIG. 5 is an explanatory diagram showing a planar state of the planar heater 30 before being attached to the toilet seat housing 20. The planar heater 30 includes an insulating sheet 32, a plurality of strip-shaped heating elements 33 printed radially on the insulating sheet 32, and an insulating coating layer on which an insulating coating is printed so as to cover a part of the strip-shaped heating element 33. 34, printed on the insulating coating layer 34 along the belt-like heating element 33, and a plurality of radial power supply lines 35 joined to a part of the belt-like heating element 33, and conductive to connect the plurality of radial power supply lines 35. A connection line 36 on which paint is printed, a power supply line 37 for supplying electricity to the belt-shaped heating element 33 via the connection line 36 and the radial power supply line 35 from the outside, a band-shaped heating element 33, the radial power supply line 35, and the connection line 36. And the cuts 31 that are radially formed. In FIG. 5, the radial power supply line 35 and the connection line 36 are sandwiched between the insulating sheet 32 and the insulating sheet 40, but are drawn with solid lines for explanation of the shape.

  6 is a cross-sectional view taken along the line BB in FIG. 5 showing the planar heater 30, FIG. 7 is a cross-sectional view taken along the line CC in FIG. 5 showing the planar heater 30, and FIG. It is D sectional drawing. With reference to FIGS. 5 to 8, a method of creating the planar heater 30 will be described. First, a resistor paint prepared by mixing carbon powder into a resin having positive resistance temperature characteristics or the like is formed on the insulating sheet 32 made of polyethylene terephthalate (PET) resin as a belt-like heating element 33 (radial) shown in FIG. A plurality of belt-like heating elements 33 arranged in the above are formed to form the belt-like heating element 33. Next, the insulating paint layer 34 is formed by printing the insulating paint so that the portion of the belt-like heating element 33 that becomes the joint portion 38 with the radial power supply line 35 is left in a later step and the other portions are covered. Next, the conductive paint is printed in the shape shown in FIG. 5 as the radial power supply line 35 and the connection line 36 (a plurality of radial lines and a line connecting the radial lines), and the radial power supply line 35 and the connection line 36 are printed. Form. At this time, the conductive paint for forming the radial power supply line 35 is directly printed on the portion of the belt-like heating element 33 where the insulating paint is not printed, and a joint portion 38 between the belt-like heating element 33 and the radial power supply line 35 is formed. The A feeding line 37 is disposed at the end of the connection line 36. Next, an adhesive is applied to form an adhesive layer 39, and the insulating sheet 40 is attached. An adhesive is applied to the back side of the insulating sheet 32 to form an adhesive layer 41, and the adhesive layer 41 is covered with a release paper 42. Finally, a plurality of radial cuts 31 are made at positions on the outer peripheral portion and the inner peripheral portion where the belt-like heating element 33, the radial feed line 35, the connection line 36, and the feed line 37 are not cut, and before being attached to the toilet seat housing 20 The planar heater 30 is completed. The insulating sheets 32 and 40 are not limited to polyethylene terephthalate (PET) resin, but may be resin insulating sheets such as polyethylene naphthalate (PEN) or polyimide (PI).

  Since the sheet heater 30 of the heating toilet seat 10 according to the present invention includes a plurality of radial cuts 31 on the outer peripheral portion and the inner peripheral portion, the sheet heater 30 is wrinkled and stuck on the substantially entire surface of the complicated three-dimensional curved toilet seat casing 20. I can do it. Further, the sheet heater 30 of the heating toilet seat 10 of the present invention includes the belt-like heating element 33 made of a resistor paint having a positive resistance temperature characteristic, so that the temperature safety is high and the control circuit is simplified. I can do it. In addition, since the plurality of belt-like heating elements 33 can be arranged in every corner in a radial manner, the entire surface of a portion that is touched by a person when seated on the heating toilet seat 10 can be warmed.

  The sheet heater 30 of the heating toilet seat 10 according to the present invention includes an insulating sheet 32 on which a belt-like heating element 33 is printed, an insulating coating layer 34 that covers a part of the belt-like heating element 33 except a part thereof, a radial feed line 35, and a connection line. Corrosion resistance and insulation are improved by the insulating sheet 40 covering 36, the feeder line 37, and the like. Further, the insulating sheets 32 and 40 and the insulating paint layer 34 can prevent the belt-like heating element 33, the radial power supply line 35, and the connection line 36 from being damaged when assembled.

  The sheet heater 30 of the heating toilet seat 10 of the present invention can perform printing of an insulating paint in a series of printing processes such as a resistor paint and a conductive paint. Therefore, the sheet heater 30 with improved corrosion resistance and insulation can be produced at a low price.

  In the heating toilet seat 10 of the present invention, moisture adhering to the belt-like heating element 33 causing deterioration in corrosion resistance and insulation performance is doubled by the insulating sheets 32 and 40 of the sheet heater 30, the insulating paint layer 34, and the toilet seat back cover 60. Therefore, the deterioration of corrosion resistance and insulation performance can be prevented more reliably.

  Another embodiment will be described with reference to FIG. FIG. 9 is a cross-sectional view taken along the line BB of FIG. 5 showing another embodiment of the planar heater 100. In the present embodiment, members common to those in the above embodiment are denoted by the same reference numerals, and description thereof is omitted. In the above embodiment, the adhesive is applied after the radial power supply line 35 and the connection line 36 are printed and the power supply line 37 is arranged. However, in this embodiment, before applying the adhesive, as shown in FIG. The insulating paint layer 101 is formed by printing the insulating paint and covers the belt-like heating element 33, the radial power supply line 35, the connection line 36, and the like. Thereby, the corrosion resistance / insulation properties of the belt-like heating element 33, the radial power supply line 35, the connection line 36, and the like can be further improved.

It is a whole perspective view which shows the toilet provided with the heating toilet seat of this invention. It is the perspective view which looked at the heating toilet seat of this invention from upper direction. It is AA sectional drawing of FIG. 2 which shows the heating toilet seat of this invention. It is the top view which looked at the toilet seat housing | casing to which the planar heater was affixed from the planar heater side. It is explanatory drawing which shows the planar state of the planar heater before affixing on a toilet seat housing. It is BB sectional drawing of FIG. 5 which shows a planar heater. It is CC sectional drawing of FIG. 5 which shows a planar heater. It is DD sectional drawing of FIG. 5 which shows a planar heater. It is BB sectional drawing of FIG. 5 which shows the other Example of a planar heater.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heating toilet seat 20 Toilet seat housing 30 Planar heater 31 Notch 32 Insulation sheet 33 Strip | belt-shaped heating element 34 Insulating paint layer 35 Radial feed line 36 Connection line

Claims (3)

Toilet seat enclosure,
A heating toilet seat provided with a sheet heater that is affixed to the toilet seat casing and warms the toilet seat casing,
The planar heater is
An insulating sheet;
A plurality of belt-like heating elements formed by radially printing resistor paint on the insulating sheet;
An insulating paint layer formed by printing an insulating paint on the belt-like heating element; and
A plurality of radial feeders that are formed by printing a conductive paint radially along the belt-like heating element on the insulating paint layer and joined to an end of the belt-like heating element;
And having a connection line formed by printing the conductive paint so as to connect the plurality of radial power supply lines,
A heating toilet seat, comprising a plurality of incisions formed radially to a predetermined distance at which energization of the belt-shaped heating element, the radial power supply line, and the connection line is maintained. The heating toilet seat according to claim 1, wherein the belt-shaped heating element contains an insulating resin and conductive carbon particles, and has a positive resistance temperature characteristic. The heating toilet seat according to claim 1 or 2, wherein the plurality of belt-like heating elements are connected in parallel by the radial power supply line and the connection line.

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