JP6876239B2 - Heating toilet seat - Google Patents

Description

The present invention relates to a heated toilet seat.

Conventionally, heating provided with a toilet seat, a heating element unit provided on the back surface of the toilet seat, and a heating element prevention device (overheat protection unit) that detects an abnormal temperature rise of the toilet seat and shuts off the energization of the heating element unit. The toilet seat is known.

Among such heating toilet seats, there is one that constitutes a heating element unit by sandwiching a heater (linear heater) arranged in a meandering shape between two metal foils (for example, Patent Document 1). Further, in this heating toilet seat, the heating element unit is provided with a folded-back portion folded back from the back surface of the toilet seat, and an overtemperature prevention device is arranged in the folded-back portion.

Japanese Unexamined Patent Publication No. 2014-68667

By the way, in the above-mentioned heating toilet seat, since the heating element unit is folded back, the heaters may come close to each other at the folded-back portion. In this case, the portion where the heaters are close to each other generates heat excessively, and the heat is excessively transferred to the overtemperature prevention device, which may cut off the energization of the heating element unit. ..

The present invention has been made in view of these circumstances. The purpose is to provide a heated toilet seat capable of suppressing excessive heat transfer to the overheat protection section.

The heated toilet seat that solves the above problems includes a toilet seat having a seating surface, a linear heater that generates heat when energized, a main body portion that has a shape corresponding to the toilet seat, and a main body portion that extends from the main body portion and extends to the main body portion. The linear heater is energized when it is sandwiched between the heat transfer sheet having the first sandwiching portion that is folded back toward the toilet and the main body portion and the first sandwiching portion and an excessive temperature rise of the toilet seat is detected. When the portion of the main body portion that overlaps with the first sandwiching portion when the first sandwiching portion is folded back is used as the second sandwiching portion, the first sandwiching portion and the said Of the second sandwiching portions, one sandwiching portion has a heating surface provided by meandering the linear heater, and the other sandwiching portion has a non-heating surface not provided with the linear heater.

According to the above configuration, when the first sandwiching portion is folded back toward the main body portion, it is possible to prevent the linear heaters from being arranged close to each other at the portion where the first sandwiching portion and the second sandwiching portion overlap. Therefore, it is possible to suppress excessive heat generation in the portion where the first sandwiching portion and the second sandwiching portion overlap. As a result, excessive heat transfer to the overheat protection unit can be suppressed.

In the heating toilet seat, when the direction in which the first sandwiching portion extends in the heat transfer sheet is the extending direction, the overheat protection portion is in the extending direction of the first sandwiching portion and the second sandwiching portion. It is preferable that it is sandwiched between the middle portions of the above.

When the overheat protection portion is sandwiched between the first sandwiching portion and the end portion of the second sandwiching portion in the extension direction, the overheat protection portion comes into contact with the end portion of the heating surface in the extension direction, resulting in overheating. It is difficult for the heat of the linear heater to be transferred to the protection part. In this respect, according to the above configuration, since the overheat protection portion comes into contact with the intermediate portion of the heating surface in the extending direction, the heat of the linear heater is easily transferred to the overheat protection portion. In this way, it is possible to suppress a decrease in the responsiveness of the superheat protection unit while suppressing excessive heat transfer to the superheat protection unit.

In the heated toilet seat, the overheat protection portion is preferably wrapped in the sandwiching portion having the heating surface among the first sandwiching portion and the second sandwiching portion.

According to the above configuration, the contact area between the superheat protection portion and the linear heater can be increased as compared with the case where the superheat protection portion is wrapped with the sandwiching portion having the non-heated surface. Therefore, the heat of the linear heater is easily transferred to the overheat protection portion. In this way, it is possible to suppress a decrease in the responsiveness of the overheat protection unit.

In the heating toilet seat, the overheat protection portion has a columnar shape, and the heating surface is spaced by the linear heater provided on the heating surface in a direction forming an acute angle with the axial direction of the overheat protection portion. It is preferable that a plurality of straight portions arranged therein and a plurality of curved portions connecting adjacent straight portions are provided.

According to the above configuration, the contact area of the linear heater in the overheat protection portion is compared with the case where the linear portions of the linear heater on the heating surface are arranged at intervals in the direction orthogonal to the axial direction of the overheat protection portion. Becomes larger. Therefore, the heat of the linear heater is easily transferred to the overheat protection portion. In this way, it is possible to further suppress the decrease in the responsiveness of the overheat protection unit.

In the heating toilet seat, an adhesive layer is interposed between the first sandwiching portion and the second sandwiching portion, while the sandwiching portion having the heating surface and the overheating of the first sandwiching portion and the second sandwiching portion. It is preferable that no adhesive layer is interposed between the protective portion.

According to the above configuration, the overheat protection portion can be fixed between the first sandwiching portion and the second sandwiching portion by joining the first sandwiching portion and the second sandwiching portion with the adhesive layer. On the other hand, since the adhesive layer is not interposed between the sandwiching portion having the heating surface and the overheat protection portion, the heat of the linear heater is easily transferred to the overheat protection portion. As a result, it is possible to further suppress a decrease in the responsiveness of the overheat protection unit.

The perspective view of the heated toilet seat in one Embodiment. An exploded perspective view of the toilet seat. Bottom view of the toilet seat excluding the lower plate of the toilet seat. Partial bottom view of the toilet seat excluding the lower plate of the toilet seat. FIG. 4 is a cross-sectional view taken along the line AA in FIG. Sectional drawing of the toilet seat in the comparative example. The bottom view of the toilet seat excluding the lower plate of the toilet seat which concerns on the 1st modification. FIG. 3 is a cross-sectional view of the toilet seat according to the first modification. Sectional drawing of the toilet seat which concerns on the 2nd modification. The partial bottom view of the toilet seat excluding the lower plate of the toilet seat which concerns on the 3rd modification. The bottom view of the toilet seat excluding the lower plate of the toilet seat which concerns on the 4th modification. FIG. 3 is a cross-sectional view of the toilet seat according to the fourth modification. The bottom view of the toilet seat excluding the lower plate of the toilet seat which concerns on the 5th modification.

Hereinafter, an embodiment of the heated toilet seat will be described.

As shown in FIG. 1, the heated toilet seat 1 is provided with a main body 10 having the main functions of the heated toilet seat 1, a toilet seat 20 on which the user sits, a toilet lid 40 covering the toilet seat 20, and a switch. It includes an operation unit 40. The heated toilet seat 1 of the present embodiment is used in a state of being attached to the upper surface of the toilet bowl 60.

The main body 10 is provided behind the upper part of the toilet bowl 60. The main body 10 has, for example, a hot water tank that heats the stored water, a washing nozzle unit that cleans the local part of the user with hot water supplied from the hot water tank, and blows hot air to dry the local part of the user. Equipped with a hot air dryer. Further, the main body 10 has a built-in control unit 11 that controls the operation of the constituent members of the heating toilet seat 1.

The toilet seat 20 is provided so as to be swingable with respect to the main body 10. The toilet seat 20 is provided with a heating function so that the seating surface 21A on which the user is seated is warmed. The detailed configuration of the toilet seat 20 will be described later.

Like the toilet seat 20, the toilet lid 40 is provided so as to be swingable with respect to the main body 10. As shown in FIG. 1, the toilet lid 40 stands at a position behind the heating toilet seat 1 in the open state. When the toilet lid 40 is closed, it covers the upper surface of the toilet seat 20.

The operation unit 50 is provided so as to extend from the side surface of the main body 10 to the front side. The operation unit 40 has a button or the like for starting or stopping the operation of the heating toilet seat 1.

Next, the configuration of the toilet seat 20 will be described with reference to FIGS. 2 to 5.

As shown in FIGS. 2 and 3, the toilet seat 20 includes a toilet seat upper plate 21 having a seating surface 21A, a toilet seat heater 30 arranged on the back surface 21B of the toilet seat upper plate 21, and a toilet seat heater 30 together with the toilet seat upper plate 21. The toilet seat lower plate 22 to be accommodated and the overheat protection unit 70 provided in the toilet seat heater 30 are provided.

As shown in FIG. 2, the toilet seat upper plate 21 and the toilet seat lower plate 22 have a substantially elliptical shape, and a substantially circular hole is formed in the center. The toilet seat upper plate 21 and the toilet seat lower plate 22 may be joined by welding, for example, or may be connected by a fastening member such as a screw. Further, the toilet seat upper plate 21 and the toilet seat lower plate 22 are formed of, for example, metal or resin.

As shown in FIG. 3, the toilet seat heater 30 includes a heat transfer sheet 31 made of a material having high thermal conductivity, and a linear heater 32 that generates heat when energized.

The heat transfer sheet 31 is formed of a metal foil such as aluminum. The heat transfer sheet 31 is formed in a substantially horseshoe shape with a part of the front portion cut off. Further, the heat transfer sheet 31 has a main body portion 33 having a shape corresponding to the toilet seat 20, and a first holding portion 34 extending from the main body portion 33 and folded back toward the main body portion 33. There is. In the following description, in the main body 33, a portion that overlaps with the first holding portion 34 when the first holding portion 34 is folded back toward the main body 33 is referred to as a second holding portion 35. In the present embodiment, the first holding portion 34 (second holding portion 35) has a rectangular shape in a plan view.

The linear heater 32 is provided meandering in the heat transfer sheet 231 so as to heat substantially the entire region of the main body 33 except for the second sandwich 35. The linear heater 32 is composed of, for example, a sheathed heater. In this way, since the toilet seat heater 30 is provided with the linear heater 32 as a whole on the heat transfer sheet 31 having high thermal conductivity, heat can be uniformly transferred to substantially the entire area of the toilet seat upper plate 21 and can be uniformly transferred on the toilet seat. The seating surface 21A of the plate 21 can be warmed.

The first sandwiching portion 34 of the heat transfer sheet 31 has a heating surface 36 provided by meandering the linear heater 32. On the other hand, the linear heater 32 is not provided in the second sandwiching portion 35 in a meandering manner, and the area where the linear heater 32 is arranged in the second sandwiching portion 35 is small. Therefore, it can be said that the amount of heat generated by the linear heater 32 provided in the second sandwiching portion 35 is small, and the second sandwiching portion 35 has a non-heated surface 37. Further, on the heating surface 36 of the first sandwiching portion 34, a plurality of straight portions 38 arranged at intervals in a direction orthogonal to the axial direction of the superheat protection portion 70 forming a substantially columnar shape by the linear heater 32. , A plurality of curved portions 39 that connect the adjacent straight portions 38 to each other are provided.

The overheat protection unit 70 is a thermal fuse in which conductors are connected to both ends of the soluble alloy contained in a substantially columnar case. The overheat protection unit 70 is arranged in the middle of the energization circuit of the linear heater 32. When the overheat protection unit 70 detects an excessive temperature rise of the toilet seat 20, the soluble alloy is melted. Then, the superheat protection unit 70 cuts off the energization of the linear heater 32 by causing the melted soluble alloy to be suspected and divided toward the conductors at both ends. Further, the superheat protection unit 70 does not recover when the operation of shutting off the energization of the linear heater 32 is performed. In this way, the temperature of the toilet seat 20 does not rise excessively.

Next, the attachment structure of the overheat protection portion 70 to the toilet seat heater 30 will be described. In the present embodiment, it is assumed that the adhesive material 80 such as double-sided tape is provided on the surface opposite to the surface on which the linear heater 32 of the toilet seat heater 30 is arranged.

First, as shown in FIG. 3, the main body 33 is attached to almost the entire back surface 21B of the toilet seat upper plate 21, and then the overheat protection portion 70 is arranged on the toilet seat heater 30. Specifically, when the extending direction of the first holding portion 34 is set to the extending direction X, the overheat protection portion 70 is arranged at the intermediate portion of the second holding portion 35 in the extending direction X. Then, as shown in FIGS. 4 and 5, the first sandwiching portion 34 is folded back toward the main body portion 33 in a state where the overheat protection portion 70 is arranged on the second sandwiching portion 35. In this way, the overheat protection portion 70 is sandwiched between the first sandwiching portion 34 and the second sandwiching portion 35. Further, in the present embodiment, when the first holding portion 34 is folded back toward the main body portion 33, the overheat protection portion 70 is wrapped by the first holding portion 34 so as to follow the outer shape of the overheat protection portion 70. Here, since the adhesive material is provided between the first sandwiching portion 34 and the second sandwiching portion 35, the first sandwiching portion 34 is adhesively fixed to the second sandwiching portion 35 (main body portion 33). As a result, the overheat protection unit 70 is fixed to the toilet seat heater 30.

By the way, as shown in FIG. 6, unlike the present embodiment, in the case of the comparative example in which the first sandwiching portion 534 and the second sandwiching portion 535 have the heating surface 36, the first sandwiching portion 534 and the second sandwiching portion 535 There is a possibility that the linear heater 532 provided in the first sandwiching portion 534 and the linear heater 532 provided in the second sandwiching portion 535 come into contact with each other at the folded portion. In this case, the portion where the linear heaters 532 come into contact with each other may generate excessive heat. As shown in FIG. 5, in the present embodiment, it is difficult for the linear heaters 32 to come into contact with each other at the portion where the first sandwiching portion 34 and the second sandwiching portion 35 are folded. Therefore, it is possible to suppress excessive heat generation in the portion where the first sandwiching portion 34 and the second sandwiching portion 35 are folded.

Further, since the overheat protection portion 70 is wrapped by the first sandwiching portion 34 having the heating surface 36, the overheat protection portion is compared with the case where the overheat protection portion is wrapped by the first sandwiching portion having no heating surface 36. The contact area between the 70 and the linear heater 32 can be increased. Therefore, the heat of the linear heater 32 is easily transferred to the superheat protection unit 70.

Further, unlike the present embodiment, when the overheat protection portion is arranged at the end on the side of the first sandwiching portion in the extension direction X of the second sandwiching portion, and the opposite of the first sandwiching portion in the extension direction of the second sandwiching portion. When the overheat protection portion is arranged at the side end portion, the overheat protection portion comes into contact with the end portion of the heating surface in the extending direction. Therefore, it is difficult for the heat of the linear heater to be transferred to the overheat protection portion. As shown in FIG. 4, since the superheat protection unit 70 in the present embodiment comes into contact with the intermediate portion of the heating surface 36 in the extension direction X, the heat of the linear heater 32 is easily transferred to the superheat protection unit 70. ..

As described in detail above, the following effects can be obtained according to the present embodiment.
(1) Since it is possible to prevent the linear heaters 32 from being arranged close to each other at the portion where the first sandwiching portion 34 and the second sandwiching portion 35 are folded, the portion where the first sandwiching portion 34 and the second sandwiching portion 35 are folded. Excessive heat generation can be suppressed. As a result, excessive heat transfer to the superheat protection unit 70 can be suppressed.
(2) Since the superheat protection unit 70 comes into contact with the intermediate portion of the heating surface 36 in the extension direction X, the heat of the linear heater 32 is easily transferred to the superheat protection unit 70. In this way, it is possible to suppress a decrease in the responsiveness of the superheat protection unit 70 while suppressing excessive heat transfer to the superheat protection unit 70.
(3) The contact area between the superheat protection portion 70 and the linear heater 32 can be increased as compared with the case where the superheat protection portion is wrapped with the sandwiching portion having the non-heated surface. Therefore, the heat of the linear heater 32 is easily transferred to the superheat protection unit 70. In this way, it is possible to suppress a decrease in the responsiveness of the overheat protection unit 70.

The above embodiment may be changed as shown below.

-As shown in FIG. 7, the first sandwiching portion 134 may be provided with the non-heated surface 37, while the second sandwiching portion 135 may be provided with the heated surface 36. Then, as in the present embodiment, the first sandwiching portion 134 may be folded back toward the side of the main body portion 133 where the adhesive material 80 is not provided. Further, as shown in FIG. 8, unlike the present embodiment, the first sandwiching portion 134 may be folded back toward the side of the main body portion 133 where the adhesive material 80 is provided. Further, since the adhesive material is provided on the contact surfaces of the first holding portion 134 and the toilet seat upper plate 21, the first holding portion 34 is adhesively fixed to the back surface 21B of the toilet seat upper plate 21.

As shown in FIG. 9, the first sandwiching portion 234 is directed toward the main body portion 233 with the overheat protection portion 70 arranged at the end of the second sandwiching portion 235 on the extension direction X on the side of the first sandwiching portion 234. You may fold it back. As in the modified example of FIG. 8, the first sandwiching portion 234 may be folded back toward the side of the main body portion 233 where the adhesive material 80 is provided. Further, the overheat protection portion 70 may be arranged at the end of the second sandwiching portion 235 on the opposite side of the first sandwiching portion 234 in the extending direction X, and the first sandwiching portion 234 may be folded back to the main body portion 233.

-In the present embodiment, the first holding portion 34 may be folded back toward the side of the main body portion 33 where the adhesive material 80 is provided. The overheat protection portion 70 in this case is arranged on the side of the second sandwiching portion 35 where the adhesive material 80 is provided.

As shown in FIG. 10, the plurality of straight portions 338 on the heating surface 36 may be arranged at intervals in a direction forming an acute angle with the axial direction of the superheat protection portion 70. According to this, as compared with the case where the linear portions of the linear heater on the heating surface are arranged at intervals in the direction orthogonal to the axial direction of the overheat protection portion, the contact with the linear heater 332 in the overheat protection portion 70 The area becomes large. Therefore, the heat of the linear heater 332 is easily transferred to the superheat protection unit 70. In this way, it is possible to further suppress the decrease in the responsiveness of the overheat protection unit 70.

As shown in FIG. 11, the second sandwiching portion 435 having the non-heated surface 37 may be provided with an adhesive layer 90 for fixing the overheat protection portion 70 between the first sandwiching portion 34 and the second sandwiching portion 435. The adhesive layer 90 may be any one that joins the first sandwiching portion 34 and the second sandwiching portion 435, and may be, for example, a double-sided tape. Therefore, the adhesive layer 90 may be made of the same material as the double-sided tape used as the adhesive material 80. As shown in FIG. 12, when the overheat protection portion 70 is arranged on the second sandwiching portion 435 and the first sandwiching portion 34 is folded back toward the main body portion 33, the adhesive layer 90 becomes the first sandwiching portion. It is interposed between the 34 and the second sandwiching portion 435, and is interposed between the overheat protection portion 70 and the second sandwiching portion 435. On the other hand, the adhesive layer 90 does not intervene between the first sandwiching portion 34 having the heating surface 36 and the overheat protection portion 70.

According to this, the first sandwiching portion 34 and the second sandwiching portion 435 are joined by the adhesive layer 90, and the overheat protection portion 70 and the second sandwiching portion 435 are joined by the adhesive layer 90, whereby the overheat protection portion 70 Can be fixed between the first holding portion 34 and the second holding portion 435. On the other hand, the heat of the linear heater 32 is easily transferred to the overheat protection portion 70 in that the adhesive layer 90 does not intervene between the first sandwiching portion 34 having the heating surface 36 and the overheat protection portion 70. As a result, it is possible to further suppress a decrease in the responsiveness of the overheat protection unit 70.

Further, the adhesive layer 90 may be provided on the first sandwiching portion 34 having the heating surface 36. In that case, when the overheat protection portion 70 is arranged on the second sandwiching portion 35 and the first sandwiching portion 34 is folded back toward the main body portion 33, the first sandwiching portion 36 having the heating surface 36 is provided. It is preferable that the adhesive layer 90 does not intervene between the overheat protection portion 70 and the overheat protection portion 70.

Further, as shown in FIG. 13, the adhesive layer 91 may be provided in the second sandwiching portion 535 having the non-heated surface 37, in a portion other than the portion where the superheat protection portion 70 is arranged. That is, the adhesive layers 91 may be provided on both sides of the region where the superheat protection portion 70 is arranged in the extension direction X. Further, if the adhesive layer 91 has a color different from that of the heat transfer sheet 31, the adhesive layer 91 and the heat transfer sheet 31 can be easily distinguished from each other. According to this, when the overheat protection portion 70 is arranged in the second sandwiching portion 535, the overheating protection portion 70 may be arranged in the portion of the second sandwiching portion 535 where the adhesive layer 90 is not provided. It becomes easy to arrange the protection unit 70. Further, the adhesive layer 91 may be formed of a double-sided tape having an opening at the center so as to match the shape of the overheat protection portion 70.

-The overheat protection unit 70 may be configured by, for example, a thermostat. Therefore, even after the operation of detecting an excessive temperature rise of the toilet seat 20 and cutting off the energization of the linear heater 32, the toilet seat can be automatically or manually restored when the temperature of the toilet seat drops and reaches a certain temperature. ..

-In the above embodiment, the main body 31 may be attached to the back surface 21B of the toilet seat upper plate 21 using an adhesive. Further, the first sandwiching portion 34 may be adhered to the second sandwiching portion 35 by using an adhesive.

-In the present embodiment, an aluminum tape is attached so as to cover the portion where the first sandwiching portion 34 and the second sandwiching portion 35 fold, and the first sandwiching portion 34 is fixed to the second sandwiching portion 35 (main body portion 33). You may.

The first sandwiching portion 34 and the second sandwiching portion 35 may be provided with a non-heated surface 37. Therefore, when the first sandwiching portion 34 is folded back toward the main body portion 33, the linear heater 32 is not provided at the portion where the first sandwiching portion 34 and the second sandwiching portion 35 fold, so that the first sandwiching portion 34 and the first sandwiching portion 34 and Excessive heat generation at the portion where the second sandwiching portion 35 overlaps can be suppressed. As a result, excessive heat transfer to the superheat protection unit 70 can be suppressed.

A heating surface 36 may be provided on the contact surface of the second holding portion 35 that comes into contact with the overheat protection portion 70. According to this, since the linear heater 32 can be provided on the surface of the first sandwiching portion 34 and the second sandwiching portion 35 in contact with the overheat protection portion 70, the heat of the linear heater 32 is transferred to the overheat protection portion 70. Cheap. In this way, it is possible to suppress a decrease in the responsiveness of the overheat protection unit 70.

A lead wire for passing an electric current through the overheat protection portion 70 may be fixed between the first sandwiching portion 34 and the second sandwiching portion 35. According to this, the heat of the linear heater 32 is easily transferred to the overheat protection unit 70 in that the heat of the linear heater 32 is difficult to escape through the conducting wire of the overheat protection unit 70. As a result, it is possible to further suppress a decrease in the responsiveness of the overheat protection unit 70.

1: Heating toilet seat 10: Main body 11: Control unit 20: Toilet seat 21: Toilet seat upper plate 22: Toilet seat lower plate 30, 130, 330: Toilet seat heater 31, 131, 331: Heat transfer sheet 32, 132, 232, 332: Linear heater 33, 133, 233, 333, 433: Main body 34, 134, 234, 334: First holding part 35, 135, 235, 435, 535: Second holding part 36: Heating surface 37: Non-heating surface 38, 338: Straight part 39: Curved part 40: Toilet lid 50: Operation part 60: Toilet bowl 70: Overheat protection part 80: Adhesive material 90, 91: Adhesive layer

Claims (5)

Toilet seat with seating surface and
A linear heater that generates heat when energized,
A heat transfer sheet having a main body portion having a shape corresponding to the toilet seat, and a first holding portion extending from the main body portion and folded back toward the main body portion.
It is provided with an overheat protection unit that is sandwiched between the main body portion and the first sandwiching portion and shuts off the energization of the linear heater when an excessive temperature rise of the toilet seat is detected.
When the portion of the main body portion that overlaps with the first sandwiching portion when the first sandwiching portion is folded back is used as the second sandwiching portion.
Of the first sandwiching portion and the second sandwiching portion, one sandwiching portion has a heating surface provided by meandering the linear heater, and the other sandwiching portion has a non-heating surface not provided with the linear heater. With a heated toilet seat. When the direction in which the first holding portion extends in the heat transfer sheet is defined as the extension direction,
The heating toilet seat according to claim 1, wherein the overheat protection portion is sandwiched between the first sandwiching portion and the intermediate portion of the second sandwiching portion in the extending direction. The heating toilet seat according to claim 1 or 2, wherein the overheat protection portion is wrapped in the sandwiching portion having the heating surface among the first sandwiching portion and the second sandwiching portion. The overheat protection unit has a columnar shape and has a columnar shape.
On the heating surface, a plurality of straight portions arranged at intervals in a direction forming an acute angle with the axial direction of the overheat protection portion and adjacent straight portions are provided by the linear heater provided on the heating surface. The heating toilet seat according to any one of claims 1 to 3, wherein a plurality of curved portions to be connected are provided. While an adhesive layer is interposed between the first sandwiching portion and the second sandwiching portion, between the sandwiching portion having the heating surface and the overheat protection portion of the first sandwiching portion and the second sandwiching portion. The heated toilet seat according to any one of claims 1 to 4, wherein an adhesive layer is not interposed in the toilet seat.

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