JP2002175870A - Surface heater and its manufacturing method - Google Patents
Surface heater and its manufacturing methodInfo
- Publication number
- JP2002175870A JP2002175870A JP2001077359A JP2001077359A JP2002175870A JP 2002175870 A JP2002175870 A JP 2002175870A JP 2001077359 A JP2001077359 A JP 2001077359A JP 2001077359 A JP2001077359 A JP 2001077359A JP 2002175870 A JP2002175870 A JP 2002175870A
- Authority
- JP
- Japan
- Prior art keywords
- insulating layer
- planar
- irregularities
- planar heater
- heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Surface Heating Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、面状発熱体と、面
状発熱体に密着して面状発熱体を被覆する絶縁層とを備
える面状ヒータとその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet heater having a sheet heating element and an insulating layer for covering the sheet heating element in close contact with the sheet heating element and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】面状発熱体と、面状発熱体に密着して面
状発熱体を被覆する絶縁層とを備える面状ヒータが、各
種暖房装置に使用されている。2. Description of the Related Art A planar heater including a planar heating element and an insulating layer which is in close contact with the planar heating element and covers the planar heating element has been used for various heating devices.
【０００３】[0003]
【発明が解決しようとする課題】面状ヒータは自立性を
有さないので、支持体に貼着して使用される。支持体の
湾曲表面に面状ヒータを貼着すると、面状ヒータに皺が
でき、面状発熱体が折れ曲がって面状ヒータの性能が低
下する。面状ヒータは一般に薄膜状の面状発熱体と薄膜
状の絶縁層とを積層し加熱プレスすることにより製造さ
れる。両者を積層し加熱プレスする際に、薄膜状の絶縁
層が面状発熱体に一度に全面密着するので、両者の境界
面にエア溜まりが発生し、面状ヒータの性能が低下す
る。本発明は上記問題に鑑みてなされたものであり、支
持体の湾曲表面に貼着しても皺ができ難く、面状発熱体
と絶縁層との間にエア溜まりが無い面状ヒータと、その
製造方法とを提供することを目的とする。Since the planar heater does not have self-supporting properties, it is used by attaching it to a support. When the sheet heater is attached to the curved surface of the support, the sheet heater becomes wrinkled, and the sheet heating element is bent, thereby deteriorating the performance of the sheet heater. In general, a sheet heater is manufactured by laminating a sheet-like sheet heating element and a thin-film insulating layer and pressing them by heating. When both are laminated and heated and pressed, the thin-film-shaped insulating layer is brought into close contact with the planar heating element all at once, so that air is trapped at the boundary between the two and the performance of the planar heater is reduced. The present invention has been made in view of the above problems, a planar heater that is not easily wrinkled even when attached to a curved surface of a support, and has no air accumulation between the planar heating element and the insulating layer, An object of the present invention is to provide a manufacturing method thereof.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明においては、面状発熱体と、面状発熱体に密
着して面状発熱体を被覆する絶縁層とを備え、絶縁層表
面に凹凸が形成されていることを特徴とする面状ヒータ
を提供する。絶縁層表面に凹凸を有する面状ヒータを、
支持体の湾曲表面に貼着すると、凹凸が変形して絶縁層
表面が伸縮し、面状ヒータは支持体の湾曲表面に追随し
て変形する。従って、面状ヒータには皺はできず、面状
ヒータの性能は低下しない。絶縁層表面の凹凸は、凹凸
を形成した金型を用いて積層体を加熱プレスする、凹凸
を形成した型板を被成形体と金型との間に挟んで積層体
を加熱プレスする等の方法により形成される。この場
合、金型、型板の凹凸の凸部に対峙する絶縁層の部位
が、凹部に対峙する絶縁層の部位よりも先に面状発熱体
に押圧されるので、絶縁層は面状発熱体に一度に全面密
着しない。従って、両者の境界面にエア溜まりは形成さ
れず、エア溜まりの存在による面状ヒータの性能低下は
起こらない。In order to solve the above-mentioned problems, the present invention provides a planar heating element and an insulating layer that covers the planar heating element in close contact with the planar heating element. Provided is a planar heater in which unevenness is formed on a layer surface. A planar heater having irregularities on the surface of the insulating layer,
When attached to the curved surface of the support, the irregularities are deformed and the surface of the insulating layer expands and contracts, and the planar heater deforms following the curved surface of the support. Therefore, the planar heater does not wrinkle, and the performance of the planar heater does not decrease. Irregularities on the surface of the insulating layer are obtained by hot-pressing the laminate using a mold having irregularities, or hot-pressing the laminate with a mold plate having irregularities sandwiched between a molded object and a mold. Formed by the method. In this case, the portion of the insulating layer facing the convex portion of the concave and convex portions of the mold and the mold plate is pressed by the sheet heating element before the portion of the insulating layer facing the concave portion. Does not adhere to body at once. Therefore, no air pocket is formed at the boundary between the two, and the performance of the planar heater does not deteriorate due to the presence of the air pool.
【０００５】本発明の好ましい態様においては、絶縁層
表面の部位によって凹凸の寸法が異なる。凹凸の寸法が
変わると絶縁層表面の伸縮性が変わる。従って、支持体
の湾曲表面の曲率が部位によって異なる場合、絶縁層表
面の凹凸の寸法を、当該凹凸が対峙する湾曲表面の曲率
に応じて適正に異ならせることにより、曲率が部位によ
って異なる支持体の湾曲表面に、面状ヒータを追随させ
ることができる。[0005] In a preferred embodiment of the present invention, the size of the unevenness differs depending on the portion on the surface of the insulating layer. When the size of the unevenness changes, the elasticity of the insulating layer surface changes. Therefore, when the curvature of the curved surface of the support is different depending on the portion, the size of the unevenness on the surface of the insulating layer is appropriately changed according to the curvature of the curved surface facing the unevenness, so that the support has a different curvature depending on the portion. A planar heater can be made to follow the curved surface of.
【０００６】本発明の好ましい態様においては、人体に
対峙する絶縁層表面の凹凸の凸部の面積が、人体に対峙
しない絶縁層表面の凹凸の凸部の面積よりも小さい。人
体に接触する暖房装置に、本発明の面状ヒータを使用す
る場合、人体に対峙する絶縁層表面の凹凸の凸部の面積
を、人体に対峙しない絶縁層表面の凹凸の凸部の面積よ
りも小さくすることにより、暖房装置の人体に接触する
部位の加熱を防止し、火傷を防止することができる。In a preferred embodiment of the present invention, the area of the projections of the irregularities on the surface of the insulating layer facing the human body is smaller than the area of the projections of the irregularities on the surface of the insulating layer not facing the human body. When the planar heater of the present invention is used for a heating device that comes into contact with the human body, the area of the convexities of the irregularities on the surface of the insulating layer facing the human body is larger than the area of the convexities of the irregularities on the surface of the insulating layer that does not face the human body. By also reducing the size of the heating device, it is possible to prevent heating of a portion of the heating device that comes into contact with the human body, thereby preventing burns.
【０００７】本発明の好ましい態様においては、面状ヒ
ータの絶縁層表面に電装部品の敷設に十分な広さの平坦
部が形成されている。面状ヒータの絶縁層表面に温度検
出素子等の電装部品を敷設する場合がある。面状ヒータ
の絶縁層表面に電装部品の敷設に十分な広さの平坦部が
形成されていれば、電装部品の敷設を容易に行うことが
できる。In a preferred embodiment of the present invention, a flat portion having a width sufficient for laying electrical components is formed on the surface of the insulating layer of the planar heater. In some cases, electrical components such as temperature detection elements are laid on the surface of the insulating layer of the planar heater. If a flat portion having a sufficient width for laying the electrical component is formed on the surface of the insulating layer of the planar heater, the laying of the electrical component can be performed easily.
【０００８】本発明においては、支持体の湾曲表面に貼
着される上記何れかの面状ヒータであって、絶縁層表面
の凹凸の深さと、凹凸が対峙する湾曲表面の曲率との間
に、正の相関が在ることを特徴とする面状ヒータを提供
する。本発明においては、支持体の湾曲表面に貼着され
る上記何れかの面状ヒータであって、絶縁層表面の凹凸
の配設密度と、凹凸が対峙する湾曲表面の曲率との間
に、正の相関が在ることを特徴とする面状ヒータを提供
する。絶縁層表面の凹凸の深さが増加し、或いは凹凸の
配設密度が増加すると、絶縁層表面の伸縮性が増加す
る。従って、上記何れかの面状ヒータを支持体の湾曲表
面に貼着する場合、絶縁層表面の凹凸の深さと凹凸が対
峙する湾曲表面の曲率との間に正の相関が在り、或いは
絶縁層表面の凹凸の配設密度と凹凸が対峙する湾曲表面
の曲率との間に正の相関が在れば、貼着に際して大きな
曲率で湾曲すべき部位では絶縁層表面が大きく伸縮でき
るので、面状ヒータは支持体の湾曲表面に追随すること
ができる。本発明においては、支持体の湾曲表面に貼着
される上記何れかの面状ヒータであって、絶縁層表面の
凹凸の巾と、凹凸が対峙する湾曲表面の曲率との間に、
負の相関が在ることを特徴とする面状ヒータを提供す
る。絶縁層表面の凹凸の巾が減少すると、絶縁層表面の
伸縮性が増加する。従って、上記何れかの面状ヒータを
支持体の湾曲表面に貼着する場合、絶縁層表面の凹凸の
巾と凹凸が対峙する湾曲表面の曲率との間に負の相関が
在れば、貼着に際して大きな曲率で湾曲すべき部位では
絶縁層表面が大きく伸縮できるので、面状ヒータは支持
体の湾曲表面に追随することができる。According to the present invention, there is provided any one of the above planar heaters attached to the curved surface of the support, wherein the depth of the unevenness on the surface of the insulating layer is equal to the curvature of the curved surface facing the unevenness. , A sheet heater characterized in that there is a positive correlation. In the present invention, in any one of the above planar heaters adhered to the curved surface of the support, between the density of the irregularities on the surface of the insulating layer and the curvature of the curved surface facing the irregularities, A planar heater characterized by having a positive correlation is provided. When the depth of the unevenness on the surface of the insulating layer increases or the arrangement density of the unevenness increases, the elasticity of the surface of the insulating layer increases. Therefore, when any of the above planar heaters is attached to the curved surface of the support, there is a positive correlation between the depth of the irregularities on the surface of the insulating layer and the curvature of the curved surface where the irregularities face each other, or If there is a positive correlation between the arrangement density of the surface irregularities and the curvature of the curved surface facing the irregularities, the insulating layer surface can be greatly expanded and contracted at the part where it should be curved with a large curvature when sticking. The heater can follow the curved surface of the support. In the present invention, in any one of the above planar heaters adhered to the curved surface of the support, between the width of the irregularities on the surface of the insulating layer and the curvature of the curved surface facing the irregularities,
A planar heater characterized by having a negative correlation is provided. As the width of the irregularities on the surface of the insulating layer decreases, the elasticity of the surface of the insulating layer increases. Therefore, when any of the above planar heaters is adhered to the curved surface of the support, if there is a negative correlation between the width of the irregularities on the surface of the insulating layer and the curvature of the curved surface where the irregularities face each other, the pasting is performed. Since the surface of the insulating layer can greatly expand and contract at a portion where it should be curved with a large curvature upon attachment, the planar heater can follow the curved surface of the support.
【０００９】本発明においては、支持体の湾曲表面に貼
着される上記何れかの面状ヒータであって、貼着後に凹
に湾曲する絶縁層表面部位における凹凸の凹部の面積
が、貼着後に凸に湾曲する絶縁層表面部位の凹凸の凹部
の面積よりも広いことを特徴とする面状ヒータを提供す
る。凹凸の凹部の面積が増加すると、絶縁層表面の縮性
が増加する。従って、貼着後に凹に湾曲する絶縁層表面
部位における凹凸の凹部の面積が、貼着後に凸に湾曲す
る絶縁層表面部位の凹凸の凹部の面積よりも広ければ、
面状ヒータは支持体の湾曲表面に追随することができ
る。According to the present invention, there is provided any one of the above planar heaters to be attached to a curved surface of a support, wherein the area of the concave and convex concave portions in the surface portion of the insulating layer which is concavely curved after the attaching is determined. Provided is a planar heater characterized in that the area is larger than the area of the concave and convex concave portions on the surface portion of the insulating layer that curves convexly later. As the area of the concave and convex portions increases, the shrinkage of the insulating layer surface increases. Therefore, if the area of the concave and convex concave portions in the insulating layer surface portion that is concavely curved after bonding is larger than the area of the concave and convex concave portion of the insulating layer surface portion that is convexly curved after bonding.
The planar heater can follow the curved surface of the support.
【００１０】本発明においては、支持体の湾曲表面に貼
着される上記何れかの面状ヒータであって、貼着の際に
延伸する絶縁層表面部位の凹凸の配列方向が、延伸方向
に対して傾斜していることを特徴とする面状ヒータを提
供する。貼着の際に延伸する絶縁層表面部位の凹凸の配
列方向が、延伸方向に対して傾斜していれば、凹凸は延
伸方向へ容易に伸びるので、面状ヒータは支持体の湾曲
表面に追随することができる。[0010] In the present invention, any one of the above planar heaters attached to the curved surface of the support, wherein the arrangement direction of the irregularities on the surface portion of the insulating layer that is extended at the time of attachment is in the stretching direction. Provided is a planar heater characterized by being inclined with respect to the plane heater. If the arrangement direction of the irregularities on the surface of the insulating layer that is stretched at the time of sticking is inclined with respect to the stretching direction, the irregularities easily extend in the stretching direction, so that the planar heater follows the curved surface of the support. can do.
【００１１】本発明においては、支持体の湾曲表面に貼
着される上記何れかの面状ヒータであって、貼着の際に
延伸する絶縁層表面部位の延伸方向と、絶縁層の易延伸
方向とが一致することを特徴とする面状ヒータを提供す
る。絶縁層の延伸性が非等方である場合、面状ヒータの
貼着の際に延伸する絶縁層表面部位の延伸方向と、絶縁
層の易延伸方向とが一致すれば、絶縁層表面は容易に延
伸するので、面状ヒータは支持体の湾曲面に容易に追随
することができる。According to the present invention, there is provided any one of the above planar heaters to be attached to a curved surface of a support, wherein a stretching direction of an insulating layer surface portion to be stretched at the time of sticking, and an easy stretching of the insulating layer. Provided is a planar heater characterized in that the directions coincide with each other. When the stretchability of the insulating layer is anisotropic, the surface of the insulating layer can be easily formed if the stretching direction of the surface portion of the insulating layer that is stretched during the attachment of the planar heater matches the easy stretching direction of the insulating layer. Therefore, the sheet heater can easily follow the curved surface of the support.
【００１２】本発明においては、面状発熱体と、面状発
熱体に密着して面状発熱体を被覆する絶縁層とを備え、
支持体の湾曲表面に貼着される面状ヒータであって、貼
着の際に延伸する絶縁層表面部位の延伸方向と、絶縁層
の易延伸方向とが一致することを特徴とする面上する面
状ヒータを提供する。絶縁層の延伸性が非等方である場
合、面状ヒータの貼着の際に延伸する絶縁層表面部位の
延伸方向と、絶縁層の易延伸方向とが一致すれば、絶縁
層表面は容易に延伸するので、面状ヒータは支持体の湾
曲面に容易に追随することができる。According to the present invention, there is provided a sheet heating element, and an insulating layer for covering the sheet heating element in close contact with the sheet heating element,
A planar heater attached to a curved surface of a support, wherein an extending direction of an insulating layer surface portion extending at the time of attaching and an easily extending direction of the insulating layer coincide with each other. To provide a planar heater. When the stretchability of the insulating layer is anisotropic, the surface of the insulating layer can be easily formed if the stretching direction of the surface portion of the insulating layer that is stretched during the attachment of the planar heater matches the easy stretching direction of the insulating layer. Therefore, the sheet heater can easily follow the curved surface of the support.
【００１３】本発明においては、上記何れかの面状ヒー
タを備えることを特徴とする暖房便座装置を提供する。
本発明に係る面状ヒータは、湾曲した便座の下面に貼着
するのに適している。従って、本発明に係る面状ヒータ
は暖房便座に使用可能である。According to the present invention, there is provided a heating toilet seat device comprising any one of the above planar heaters.
The sheet heater according to the present invention is suitable for being attached to the lower surface of a curved toilet seat. Therefore, the planar heater according to the present invention can be used for a heated toilet seat.
【００１４】本発明においては、面状発熱体と、熱可塑
性樹脂から成る接着層を有する絶縁層とを積層して積層
体を形成し、当該積層体を加熱しつつ積層方向に加重を
掛け、面状発熱体と絶縁層とを圧着すると共に絶縁層表
面に凹凸を形成することを特徴とする面状ヒータの製造
方法を提供する。上記方法によれば、面状発熱体と絶縁
層との圧着と凹凸の形成とを同時に行えるので、面状ヒ
ータの生産性が向上する。In the present invention, a laminate is formed by laminating a sheet heating element and an insulating layer having an adhesive layer made of a thermoplastic resin, and a load is applied in the laminating direction while heating the laminate. Provided is a method for manufacturing a planar heater, which comprises crimping a planar heating element and an insulating layer and forming irregularities on the surface of the insulating layer. According to the above method, the pressure bonding of the planar heating element and the insulating layer and the formation of the unevenness can be performed at the same time, so that the productivity of the planar heater is improved.
【００１５】[0015]
【発明の実施の形態】本発明の実施例に係る面状ヒータ
を説明する。図１に示すように、面状ヒータ１は、導電
性繊維混抄紙２と、導電性繊維混抄紙２の両端に取り付
けられた１対の金属箔電極３と、これらをサンドイッチ
状に挟んで被覆する絶縁樹脂層４とを備えている。絶縁
層４の表面には、凹凸５が形成されている。面状ヒータ
１は、図２に示すように、金属箔電極３が取り付けられ
た導電性繊維混抄紙２を、ホットメルトやエチレンビニ
ルアセテートコポリマー（ＥＶＡ）等の熱可塑性樹脂か
ら成る接着層４ａが積層されたポリエチレンテレフタレ
ート（ＰＥＴ）やポリエチレン（ＰＥ）等から成る絶縁
樹脂層４でサンドイッチ状に挟んで積層体を形成し、予
め凹凸形状を形成した金型内で前記積層体を積層方向に
加圧加熱することにより、製造される。導電性繊維混抄
紙２と絶縁層４との圧着と凹凸５の形成とが同時に行わ
れ、面状ヒータ１が効率良く生産される。自立できない
面状ヒータ１は、図３に示すように、支持体である便座
６の湾曲した裏面に貼着され、便座６と協働して暖房便
座７を構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A planar heater according to an embodiment of the present invention will be described. As shown in FIG. 1, a sheet heater 1 includes a conductive fiber-mixed paper 2, a pair of metal foil electrodes 3 attached to both ends of the conductive fiber-mixed paper 2, and sandwiches these in a sandwich shape. And an insulating resin layer 4. Irregularities 5 are formed on the surface of the insulating layer 4. As shown in FIG. 2, the sheet heater 1 includes a conductive fiber mixed paper 2 having a metal foil electrode 3 attached thereto, and an adhesive layer 4 a made of a thermoplastic resin such as hot melt or ethylene vinyl acetate copolymer (EVA). A laminate is sandwiched between the laminated insulating resin layers 4 made of polyethylene terephthalate (PET), polyethylene (PE), or the like to form a laminate, and the laminate is applied in the laminating direction in a mold in which irregularities are formed in advance. Manufactured by pressure heating. The pressure bonding of the conductive fiber mixed paper 2 and the insulating layer 4 and the formation of the unevenness 5 are simultaneously performed, and the planar heater 1 is efficiently produced. As shown in FIG. 3, the non-self-supporting planar heater 1 is attached to a curved back surface of a toilet seat 6 as a support, and forms a heating toilet seat 7 in cooperation with the toilet seat 6.
【００１６】図３から分かるように、便座6裏面の湾曲
部６ａにおいて、湾曲部６ａに貼着される絶縁層４表面
の凹凸５が拡大して絶縁層４表面が伸び、反対側の湾曲
部６ａに貼着されない絶縁層４表面の凹凸５が縮小して
絶縁層４表面が縮むことにより、面状ヒータ１は便座６
裏面の湾曲部６ａに追随して、湾曲部６ａ密着すること
ができる。従って、面状ヒータ１には皺は発生せず、皺
による導電性繊維混抄紙２の極端な屈曲は発生せず、面
状ヒータ１の性能は低下しない。図３から分かるよう
に、面状ヒータ１においては、便座６裏面の曲率の大き
な部位６ａに対峙する凹凸５の面積、深さを、便座６裏
面の曲率の小さな部位６ｂに対峙する凹凸５の面積、深
さよりも大きくしている。寸法の大きな凹凸５が形成さ
れた絶縁層４表面は、寸法の小さな凹凸５が形成された
絶縁層４表面に比べて伸縮性が大きいので、便座６裏面
の曲率の大きな部位６ａに対峙する絶縁層４表面は大き
く伸縮でき、便座６裏面の曲率の小さな部位に対峙する
絶縁層４表面は小さく伸縮できる。従って、面状ヒータ
１は、部位によって曲率が異なる便座６裏面の湾曲に追
随して、当該裏面に密着することができる。従って、面
状ヒータ１を暖房便座６の裏面に貼着する際に、面状ヒ
ータ１には皺は発生せず、導電性繊維混抄紙２は極端に
屈曲せず、面状ヒータ１の性能は低下しない。図３に示
すように、絶縁層４表面に平坦部４ｂを形成すれば、サ
ーミスタ等の電装部品８を絶縁層４表面に容易に敷設す
ることができ、暖房便座７の利便性が向上する。As can be seen from FIG. 3, in the curved portion 6a on the back surface of the toilet seat 6, the unevenness 5 on the surface of the insulating layer 4 attached to the curved portion 6a is enlarged, the surface of the insulating layer 4 is extended, and the curved portion on the opposite side is formed. The unevenness 5 on the surface of the insulating layer 4 that is not adhered to 6a is reduced and the surface of the insulating layer 4 is reduced, so that the sheet heater 1
Following the curved portion 6a on the back surface, the curved portion 6a can be in close contact. Accordingly, no wrinkles are generated in the sheet heater 1, the conductive fiber mixed paper 2 is not extremely bent due to the wrinkles, and the performance of the sheet heater 1 is not reduced. As can be seen from FIG. 3, in the sheet heater 1, the area and depth of the unevenness 5 facing the large curvature portion 6 a on the rear surface of the toilet seat 6 are changed by changing the area and depth of the unevenness 5 facing the small curvature portion 6 b on the rear surface of the toilet seat 6. It is larger than the area and depth. Since the surface of the insulating layer 4 on which the large-sized unevenness 5 is formed has a greater elasticity than the surface of the insulating layer 4 on which the small-sized unevenness 5 is formed, the insulation facing the large curvature portion 6a on the back surface of the toilet seat 6 The surface of the layer 4 can be greatly expanded and contracted, and the surface of the insulating layer 4 facing the small curvature portion on the back surface of the toilet seat 6 can be expanded and contracted small. Therefore, the planar heater 1 can follow the curvature of the back surface of the toilet seat 6 having a different curvature depending on the portion, and can adhere to the back surface. Therefore, when the sheet heater 1 is attached to the back surface of the heating toilet seat 6, the sheet heater 1 does not wrinkle, the conductive fiber mixed paper 2 does not extremely bend, and the performance of the sheet heater 1 is reduced. Does not drop. As shown in FIG. 3, if the flat part 4 b is formed on the surface of the insulating layer 4, the electrical component 8 such as a thermistor can be easily laid on the surface of the insulating layer 4, and the convenience of the heating toilet seat 7 is improved.
【００１７】以上本発明の実施例を説明したが、本発明
は上記実施例に限定されない。面状発熱体１の使用目的
に応じて、非導電性繊維混抄紙２の片面のみを絶縁層４
で被覆しても良い。金型に凹凸を形成するのに代えて、
テフロン（登録商標）、シリコン等の樹脂製の凹凸指示
材により凹凸５を形成しても良い。凹凸５の形状は、円
形でも良く、矩形でも良く、或いは他の任意の形状でも
良い。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. Depending on the purpose of use of the sheet heating element 1, only one side of the non-conductive fiber mixed paper 2 is coated with the insulating layer 4.
It may be covered with. Instead of forming irregularities on the mold,
The irregularities 5 may be formed by a resin irregularity indicating material such as Teflon (registered trademark) or silicon. The shape of the unevenness 5 may be circular, rectangular, or any other shape.
【００１８】面状ヒータ１において、人体に対峙する絶
縁層４表面、すなわち便座６の裏面に貼着される絶縁層
４表面の凹凸５の凸部の面積を、人体に対峙しない絶縁
層４表面、すなわち便座６の裏面に貼着されない絶縁層
４表面の凹凸５の凸部の面積よりも小さくしても良い。
係る構成により、暖房便座６の人体に接触する部位の加
熱を防止し、便座利用者の火傷を防止することができ
る。In the planar heater 1, the area of the surface of the insulating layer 4 facing the human body, that is, the area of the protrusions of the irregularities 5 on the surface of the insulating layer 4 attached to the back surface of the toilet seat 6 is reduced by the surface of the insulating layer 4 not facing the human body. That is, the area may be smaller than the area of the protrusions of the unevenness 5 on the surface of the insulating layer 4 that is not attached to the back surface of the toilet seat 6.
With such a configuration, it is possible to prevent the heating of the portion of the heating toilet seat 6 that comes into contact with the human body, thereby preventing a burn of the toilet seat user.
【００１９】面状ヒータ１において、凹凸５の深さと、
当該凹凸５が対峙する便座６裏面の曲率との間に、正の
相関を持たせても良い。面状ヒータ１において、凹凸５
の配設密度と、当該凹凸５が対峙する便座６裏面の曲率
との間に、正の相関を持たせても良い。絶縁層４表面の
凹凸５の深さが増加し、或いは凹凸５の配設密度が増加
すると、絶縁層４表面の伸縮性が増加する。従って、面
状ヒータ１を便座６の湾曲裏面に貼着する場合、絶縁層
４表面の凹凸５の深さと凹凸５が対峙する湾曲裏面の曲
率との間に正の相関が在り、或いは絶縁層４表面の凹凸
５の配設密度と凹凸５が対峙する湾曲裏面の曲率との間
に正の相関が在れば、貼着に際して大きな曲率で湾曲す
べき部位では絶縁層４表面が大きく伸縮できるので、面
状ヒータ１は便座６の湾曲裏面に追随して密着すること
ができる。In the planar heater 1, the depth of the unevenness 5
A positive correlation may be provided between the unevenness 5 and the curvature of the back surface of the toilet seat 6 facing each other. In the planar heater 1, unevenness 5
And the curvature of the back surface of the toilet seat 6 to which the unevenness 5 faces may have a positive correlation. When the depth of the unevenness 5 on the surface of the insulating layer 4 increases, or the arrangement density of the unevenness 5 increases, the elasticity of the surface of the insulating layer 4 increases. Therefore, when the sheet heater 1 is attached to the curved back surface of the toilet seat 6, there is a positive correlation between the depth of the unevenness 5 on the surface of the insulating layer 4 and the curvature of the curved back surface facing the unevenness 5, or If there is a positive correlation between the arrangement density of the irregularities 5 on the surface 4 and the curvature of the curved back surface facing the irregularities 5, the surface of the insulating layer 4 can be greatly expanded and contracted at a portion to be bent with a large curvature when sticking. Therefore, the sheet heater 1 can follow and closely adhere to the curved back surface of the toilet seat 6.
【００２０】面状ヒータ１において、凹凸５の巾と、当
該凹凸５が対峙する便座６裏面の曲率との間に、負の相
関を持たせても良い。絶縁層４表面の凹凸５の巾が減少
すると、絶縁層４表面の伸縮性が増加する。従って、面
状ヒータ1を便座6の湾曲裏面に貼着する場合、絶縁層4
表面の凹凸5の巾と凹凸5が対峙する湾曲裏面の曲率との
間に負の相関が在れば、貼着に際して大きな曲率で湾曲
すべき部位では絶縁層4表面が大きく伸縮できるので、
面状ヒータ1は便座6の湾曲裏面に追随して密着すること
ができる。In the planar heater 1, a negative correlation may be provided between the width of the unevenness 5 and the curvature of the back surface of the toilet seat 6 facing the unevenness 5. As the width of the irregularities 5 on the surface of the insulating layer 4 decreases, the elasticity of the surface of the insulating layer 4 increases. Therefore, when the sheet heater 1 is attached to the curved back surface of the toilet seat 6, the insulating layer 4
If there is a negative correlation between the width of the unevenness 5 on the front surface and the curvature of the curved back surface facing the unevenness 5, the surface of the insulating layer 4 can be greatly expanded and contracted at a portion to be bent with a large curvature at the time of sticking.
The sheet heater 1 can follow and adhere to the curved back surface of the toilet seat 6.
【００２１】面状ヒータ１において、便座６の裏面に貼
着後に凹に湾曲する絶縁層4表面部位４ｃの凹凸５の凹
部の面積を、便座６の裏面に貼着後に凸に湾曲する絶縁
層４表面部位４ｄの凹凸５の凹部の面積よりも広くして
も良い。凹凸５の凹部の面積が増加すると、絶縁層４表
面の縮性が増加する。従って、貼着後に凹に湾曲する絶
縁層４表面部位４ｃにおける凹凸５の凹部の面積が、貼
着後に凸に湾曲する絶縁層４表面部位４ｄの凹凸５の凹
部の面積よりも広ければ、面状ヒータ１は便座６の湾曲
裏面に追随して密着することができる。In the planar heater 1, the area of the concave portion of the unevenness 5 on the surface portion 4c of the insulating layer 4 which is concavely curved after being attached to the back surface of the toilet seat 6 is changed to the insulating layer which is convexly curved after being attached to the rear surface of the toilet seat 6. The area of the concave portion of the unevenness 5 on the four surface portions 4d may be larger than that of the concave portion. When the area of the concave portion of the unevenness 5 increases, the shrinkage of the surface of the insulating layer 4 increases. Therefore, if the area of the concave portion of the unevenness 5 in the surface portion 4c of the insulating layer 4 that is concavely curved after attachment is larger than the area of the concave portion of the unevenness 5 in the surface portion 4d of the insulating layer 4 that is convexly curved after attachment, The heater 1 can closely follow the curved back surface of the toilet seat 6.
【００２２】面状ヒータ１において、便座６に貼着する
際に延伸する絶縁層４表面部位４ｄの凹凸５の配列方向
を、図３で白抜き矢印で示す延伸方向に対して、傾斜さ
せても良い。図４に、格子状にエンボス加工を施した面
状ヒータ１の、延伸方向と格子の配設方向との成す角α
と、引っ張り応力と、伸びとの関係を、ＪＩＳ規格引っ
張り試験に準じた引っ張り試験に基づいて調査した結果
を示す。図４から、延伸方向が格子の配設方向に対して
傾斜していると、延伸方向が格子の配設方向と平行であ
る場合に比べて、伸びが大きいことが分かる。従って、
便座６に貼着する際に延伸する絶縁層４表面部位４ｄの
凹凸５の配列方向を、図３で白抜き矢印で示す延伸方向
に対して、傾斜させることにより、絶縁層４表面部位４
ｄの延伸量を増加させることができ、面状ヒータ１を便
座６の湾曲裏面追随させて密着させることができる。In the planar heater 1, the arrangement direction of the irregularities 5 on the surface portion 4d of the insulating layer 4 extending when the heater 1 is attached to the toilet seat 6 is inclined with respect to the extending direction indicated by a white arrow in FIG. Is also good. FIG. 4 shows the angle α between the extending direction and the arrangement direction of the grid of the planar heater 1 embossed in a grid.
The results obtained by investigating the relationship between tensile stress and elongation based on a tensile test according to a JIS standard tensile test are shown. From FIG. 4, it can be seen that when the stretching direction is inclined with respect to the arrangement direction of the lattice, the elongation is larger than when the stretching direction is parallel to the arrangement direction of the lattice. Therefore,
By inclining the arrangement direction of the irregularities 5 on the surface portion 4d of the insulating layer 4 that extends when it is attached to the toilet seat 6, with respect to the extending direction indicated by the white arrow in FIG.
The extension amount of d can be increased, and the sheet heater 1 can follow and follow the curved back surface of the toilet seat 6.
【００２３】面状ヒータ１において、便座６に貼着する
際に延伸する絶縁層４表面部位４ｄの延伸方向（図３で
白抜き矢印で示す）と、表面部位４ｄを含む絶縁層４の
易延伸方向とを一致させても良い。図５に、ポリエチレ
ンフィルムの、延伸方向とのロール巻き取り方向との成
す角βと、引っ張り応力と、伸びとの関係をＪＩＳ規格
引っ張り試験に準じた引っ張り試験に基づいて調査した
結果を示す。図５から、延伸方向がポリエチレンフィル
ムのロール巻き取り方向と一致する場合に、伸びが大き
いことが分かる。ロールに巻き取ったポリエチレンフィ
ルムのように、易延伸性が非等方である素材を絶縁層４
として使用する場合には、便座６に貼着する際に延伸す
る絶縁層４表面部位４ｄの延伸方向と、表面部位４ｄを
含む絶縁層４の易延伸方向とを一致させることにより、
絶縁層４表面部位４ｄの延伸量を増加させることがで
き、面状ヒータ１を暖房便座６の湾曲裏面に追随させて
密着させることができる。In the planar heater 1, the direction of extension of the surface portion 4 d of the insulating layer 4 (shown by a white arrow in FIG. 3) that extends when the insulating layer 4 is attached to the toilet seat 6, The stretching direction may be matched. FIG. 5 shows the results of an investigation of the relationship between the angle β between the stretching direction and the roll winding direction, the tensile stress, and the elongation of the polyethylene film based on a tensile test according to the JIS standard tensile test. FIG. 5 shows that the elongation is large when the stretching direction matches the roll winding direction of the polyethylene film. A material having anisotropic stretchability, such as a polyethylene film wound on a roll, is used for the insulating layer 4.
When used as, the stretching direction of the surface portion 4d of the insulating layer 4 that is stretched when attached to the toilet seat 6 and the easy stretching direction of the insulating layer 4 including the surface portion 4d are matched.
The amount of extension of the surface portion 4d of the insulating layer 4 can be increased, and the planar heater 1 can follow and closely adhere to the curved back surface of the heating toilet seat 6.
【００２４】面状ヒータ１は、便座６の湾曲裏面に貼着
して暖房便座７を構成するのに適しているが、便座６に
限らず種々の湾曲面に貼着可能であり、暖房便座７に限
らず種々の暖房器具を構成可能である。The sheet heater 1 is suitable for forming the heating toilet seat 7 by attaching it to the curved back surface of the toilet seat 6, but it can be attached not only to the toilet seat 6 but also to various curved surfaces. Various heating appliances are not limited to 7, and various heating appliances can be configured.
【００２５】[0025]
【発明の効果】上記説明から分かるように、絶縁層表面
に凹凸を有する面状ヒータを、支持体の湾曲表面に貼着
すると、凹凸が変形して絶縁層表面が伸縮し、面状ヒー
タは支持体の湾曲表面に追随して変形する。従って、面
状ヒータには皺はできず、面状ヒータの性能は低下しな
い。従って、本発明により、支持体の湾曲表面に貼着し
ても皺ができにくい面状ヒータが提供される。絶縁層表
面の凹凸は、凹凸を形成した金型を用いて積層体を加熱
プレスする、凹凸を形成した型板を被成形体と金型との
間に挟んで積層体を加熱プレスする等の方法により形成
される。この場合、金型、型板の凹凸の凸部に対峙する
絶縁層の部位が、凹部に対峙する絶縁層の部位よりも先
に面状発熱体に押圧されるので、絶縁層は面状発熱体に
一度に全面密着しない。従って、両者の境界面にエア溜
まりは形成されず、エア溜まりの存在による面状ヒータ
の性能低下は起こらない。As can be seen from the above description, when a planar heater having irregularities on the surface of the insulating layer is attached to the curved surface of the support, the irregularities are deformed and the surface of the insulating layer expands and contracts. Deforms following the curved surface of the support. Therefore, the planar heater does not wrinkle, and the performance of the planar heater does not decrease. Therefore, according to the present invention, there is provided a planar heater which is hardly wrinkled even when attached to a curved surface of a support. Irregularities on the surface of the insulating layer can be obtained by heating and pressing the laminated body using a mold having irregularities, and hot-pressing the laminated body with a mold plate having irregularities sandwiched between a molded body and a mold. Formed by the method. In this case, the portion of the insulating layer facing the convex portion of the concave and convex portions of the mold and the mold plate is pressed by the planar heating element before the portion of the insulating layer facing the concave portion. Does not adhere to body at once. Therefore, no air pocket is formed at the boundary between the two, and the performance of the planar heater does not deteriorate due to the presence of the air pool.
【図１】本発明の実施例に係る面状ヒータの断面図であ
る。FIG. 1 is a sectional view of a sheet heater according to an embodiment of the present invention.
【図２】図１の面状ヒータの製造過程での断面図であ
る。FIG. 2 is a cross-sectional view of the planar heater of FIG. 1 in a manufacturing process.
【図３】図１の面状ヒータが湾曲裏面に貼着された便座
の断面図である。FIG. 3 is a sectional view of a toilet seat in which the planar heater of FIG. 1 is attached to a curved back surface.
【図４】面状ヒータの延伸方向と伸びとの関係を示す図
である。（ａ）は絶縁層表面に形成した格子状凹部の配
設方向と引っ張り方向との成す角度αを説明する図であ
り、（ｂ）は引っ張り試験結果を示す線図である。FIG. 4 is a diagram showing a relationship between a stretching direction and elongation of a planar heater. (A) is a figure explaining the angle (alpha) which the arrangement direction of the lattice-shaped recessed part formed in the insulating layer surface and the tension | pulling direction makes, (b) is a diagram which shows the tension test result.
【図５】エチレンフィルムの延伸方向と伸びとの関係を
示す図である。（ａ）はエチレンフィルムのロール方向
と引っ張り方向との成す角度βを説明する図であり、
（ｂ）は引っ張り試験結果を示す線図である。FIG. 5 is a view showing a relationship between a stretching direction and an elongation of an ethylene film. (A) is a diagram for explaining the angle β between the roll direction and the tensile direction of the ethylene film,
(B) is a diagram showing a tensile test result.
１ 面状ヒータ ２ 導電性繊維混抄紙 ３ 金属箔電極 ４ 絶縁層 ５ 凹凸 ６ 便座 ７ 暖房便座 Reference Signs List 1 sheet heater 2 conductive fiber mixed paper 3 metal foil electrode 4 insulating layer 5 unevenness 6 toilet seat 7 heating toilet seat
フロントページの続き (72)発明者 坪井 宏之 福岡県北九州市小倉北区中島２丁目１番１ 号 東陶機器株式会社内 (72)発明者 田中 真吾 福岡県北九州市小倉北区中島２丁目１番１ 号 東陶機器株式会社内 (72)発明者 平山 一行 福岡県北九州市小倉北区中島２丁目１番１ 号 東陶機器株式会社内 Ｆターム(参考） 3K034 AA02 AA06 AA09 AA15 BA08 BA13 BA18 BB08 BB13 BC16 BC17 CA02 CA17 HA04 JA01 JA09 Continued on the front page (72) Inventor Hiroyuki Tsuboi 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-city, Fukuoka Prefecture Inside Totoki Equipment Co., Ltd. (72) Shingo Tanaka 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture No. 1 Toto Kiki Co., Ltd. (72) Inventor Kazuyuki Hirayama 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term in Toko Kiki Co., Ltd. (Reference) 3K034 AA02 AA06 AA09 AA15 BA08 BA13 BA18 BB08 BB13 BC16 BC17 CA02 CA17 HA04 JA01 JA09
Claims (13)
状発熱体を被覆する絶縁層とを備え、絶縁層表面に凹凸
が形成されていることを特徴とする面状ヒータ。1. A planar heater, comprising: a planar heating element; and an insulating layer that covers the planar heating element in close contact with the planar heating element, wherein the surface of the insulating layer has irregularities. .
異なることを特徴とする請求項１に記載の面状ヒータ。2. The planar heater according to claim 1, wherein the size of the unevenness differs depending on the portion on the surface of the insulating layer.
の面積が、人体に対峙しない絶縁層表面の凹凸の凸部の
面積よりも小さいことを特徴とする請求項１又は２に記
載の面状ヒータ。3. The insulating layer according to claim 1, wherein the area of the projections of the unevenness on the surface of the insulating layer facing the human body is smaller than the area of the unevenness of the projections on the surface of the insulating layer not facing the human body. Sheet heater.
さの平坦部が形成されていることを特徴とする請求項１
乃至３の何れか１項に記載の面状ヒータ。4. The insulating layer according to claim 1, wherein a flat portion having a width sufficient for laying electrical components is formed on the surface of the insulating layer.
The planar heater according to any one of claims 3 to 3.
乃至４何れか１項に記載の面状ヒータであって、絶縁層
表面の凹凸の深さと、凹凸が対峙する湾曲表面の曲率と
の間に、正の相関が在ることを特徴とする面状ヒータ。5. The method according to claim 1, wherein the adhesive is attached to a curved surface of the support.
5. The surface heater according to any one of claims 4 to 4, wherein a positive correlation exists between the depth of the irregularities on the surface of the insulating layer and the curvature of the curved surface facing the irregularities. Heater.
乃至４何れか１項に記載の面状ヒータであって、絶縁層
表面の凹凸の配設密度と、凹凸が対峙する湾曲表面の曲
率との間に、正の相関が在ることを特徴とする請求項１
乃至４何れか１項に記載の面状ヒータ。6. The method according to claim 1, wherein the adhesive is attached to a curved surface of the support.
5. The planar heater according to any one of items 4 to 4, wherein a positive correlation exists between the density of the irregularities on the surface of the insulating layer and the curvature of the curved surface facing the irregularities. Claim 1
A planar heater according to any one of claims 1 to 4.
乃至４何れか１項に記載の面状ヒータであって、絶縁層
表面の凹凸の巾と、凹凸が対峙する湾曲表面の曲率との
間に、負の相関が在ることを特徴とする請求項１乃至４
何れか１項に記載の面状ヒータ。7. The method according to claim 1, wherein the support is attached to a curved surface of the support.
5. The planar heater according to any one of claims 4 to 4, wherein there is a negative correlation between the width of the irregularities on the surface of the insulating layer and the curvature of the curved surface facing the irregularities. Items 1 to 4
A planar heater according to any one of the preceding claims.
乃至４何れか１項に記載の面状ヒータであって、貼着後
に凹に湾曲する絶縁層表面部位の凹凸の凹部の面積が、
貼着後に凸に湾曲する絶縁層表面部位の凹凸の凹部の面
積よりも広いことを特徴とする面状ヒータ。8. The method according to claim 1, wherein the support is attached to a curved surface of the support.
5. The planar heater according to any one of claims 4 to 4, wherein the area of the concave portion of the concave and convex portion of the insulating layer surface portion which is concavely curved after the application is:
A planar heater characterized in that it is wider than the area of the concave and convex concave portions on the surface portion of the insulating layer that is convexly curved after the application.
乃至４何れか１項に記載の面状ヒータであって、貼着の
際に延伸する絶縁層表面部位の凹凸の配列方向が、延伸
方向に対して傾斜していることを特徴とする面状ヒー
タ。9. The method according to claim 1, wherein the adhesive is attached to a curved surface of the support.
5. The planar heater according to any one of claims 4 to 4, wherein the arrangement direction of the irregularities on the surface portion of the insulating layer that is stretched at the time of sticking is inclined with respect to the stretching direction. heater.
１乃至４何れか１項に記載の面状ヒータであって、貼着
の際に延伸する絶縁層表面部位の延伸方向と、絶縁層の
易延伸方向とが一致することを特徴とする面状ヒータ。10. The planar heater according to any one of claims 1 to 4, which is attached to a curved surface of a support, wherein a stretching direction of an insulating layer surface portion extending at the time of attachment is: A planar heater characterized in that the direction of easy extension of the insulating layer coincides with the direction of extension.
面状発熱体を被覆する絶縁層とを備え、支持体の湾曲表
面に貼着される面状ヒータであって、貼着の際に延伸す
る絶縁層表面部位の延伸方向と、絶縁層の易延伸方向と
が一致することを特徴とする面状ヒータ。11. A sheet heater comprising a sheet heating element and an insulating layer for covering the sheet heating element in close contact with the sheet heating element, wherein the sheet heater is attached to a curved surface of the support. A planar heater characterized in that the direction of extension of the surface portion of the insulating layer, which is stretched at the time of attachment, matches the direction of easy extension of the insulating layer.
の面状ヒータを備えることを特徴とする暖房便座装置。12. A heating toilet seat device comprising the planar heater according to claim 1. Description:
接着層を有する絶縁層とを積層して積層体を形成し、当
該積層体を加熱しつつ積層方向に加重を掛け、面状発熱
体と絶縁層とを圧着すると共に表面に凹凸を形成するこ
とを特徴とする面状ヒータの製造方法。13. A laminated body is formed by laminating a planar heating element and an insulating layer having an adhesive layer made of a thermoplastic resin, and a load is applied in the laminating direction while heating the laminated body to form a planar heating element. A method for manufacturing a planar heater, comprising: crimping a body and an insulating layer and forming irregularities on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001077359A JP4655255B2 (en) | 2000-09-29 | 2001-03-19 | Planar heater and manufacturing method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000298559 | 2000-09-29 | ||
| JP2000-298559 | 2000-09-29 | ||
| JP2001077359A JP4655255B2 (en) | 2000-09-29 | 2001-03-19 | Planar heater and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002175870A true JP2002175870A (en) | 2002-06-21 |
| JP4655255B2 JP4655255B2 (en) | 2011-03-23 |
Family
ID=26601096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001077359A Expired - Fee Related JP4655255B2 (en) | 2000-09-29 | 2001-03-19 | Planar heater and manufacturing method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011103293A (en) * | 2009-11-10 | 2011-05-26 | Qinghua Univ | Heater and method of manufacturing the same |
| WO2014156038A1 (en) * | 2013-03-28 | 2014-10-02 | 株式会社デンソー | Radiant heater device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021235870A1 (en) * | 2020-05-22 | 2021-11-25 | 동우 화인켐 주식회사 | Heating element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6074698U (en) * | 1983-10-31 | 1985-05-25 | 松下電工株式会社 | heated toilet seat |
| JPH01197989A (en) * | 1988-02-01 | 1989-08-09 | Mitsubishi Cable Ind Ltd | Manufacture of snow melting mat |
-
2001
- 2001-03-19 JP JP2001077359A patent/JP4655255B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6074698U (en) * | 1983-10-31 | 1985-05-25 | 松下電工株式会社 | heated toilet seat |
| JPH01197989A (en) * | 1988-02-01 | 1989-08-09 | Mitsubishi Cable Ind Ltd | Manufacture of snow melting mat |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011103293A (en) * | 2009-11-10 | 2011-05-26 | Qinghua Univ | Heater and method of manufacturing the same |
| WO2014156038A1 (en) * | 2013-03-28 | 2014-10-02 | 株式会社デンソー | Radiant heater device |
| JP2014189251A (en) * | 2013-03-28 | 2014-10-06 | Denso Corp | Radiation heater device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4655255B2 (en) | 2011-03-23 |
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