JP4613684B2 - Electromagnetic cooker - Google Patents

Electromagnetic cooker Download PDF

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JP4613684B2
JP4613684B2 JP2005139539A JP2005139539A JP4613684B2 JP 4613684 B2 JP4613684 B2 JP 4613684B2 JP 2005139539 A JP2005139539 A JP 2005139539A JP 2005139539 A JP2005139539 A JP 2005139539A JP 4613684 B2 JP4613684 B2 JP 4613684B2
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electrode
electrode portion
touch key
electromagnetic cooker
voltage
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JP2006318735A (en
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眞一 伊藤
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、プレートに設けるタッチキーを用いた電磁調理器に関するものである。 The present invention relates to an electromagnetic cooker with touch key over that provided in the plate.

従来、この種のタッチキーとしては、例えば、図９に示すようなものが提案されている（例えば、特許文献１参照）。   Conventionally, as this type of touch key, for example, one as shown in FIG. 9 has been proposed (for example, see Patent Document 1).

図９は、その構成を示しており、電気絶縁物のパネル部３０の裏面に電極部３１を設け、パネル部３０の電極部３１に対向する表面部を指３２でタッチするよう構成する。発振部３３は高周波電圧を発生し、この高周波電圧を、接触子３４を介して電極部３１に印加する。パネル部３０の表面部の電極部３１に対向する位置を指３２で触れたとき、高周波電圧は電極部３１、パネル部３０、指３２を通じてバイパスし、電極部３１に現れる電圧は指３２でタッチしないときの電圧より低下する。検知部３５は、入力された高周波電圧を整流して直流電圧に変換し、電極部３１にタッチしないときには高い直流電圧を、電極部３１にタッチしたときには低下した直流電圧を得る。さらに、検知部３５はこの直流電圧の差を演算し、差の値が所定値以上あるときタッチしたと判定するものである。   FIG. 9 shows the configuration, in which an electrode portion 31 is provided on the back surface of the panel portion 30 of an electrical insulator, and a surface portion facing the electrode portion 31 of the panel portion 30 is touched with a finger 32. The oscillation unit 33 generates a high frequency voltage and applies the high frequency voltage to the electrode unit 31 via the contact 34. When a position facing the electrode portion 31 on the surface portion of the panel portion 30 is touched with the finger 32, the high frequency voltage is bypassed through the electrode portion 31, the panel portion 30, and the finger 32, and the voltage appearing at the electrode portion 31 is touched with the finger 32. It is lower than the voltage when not. The detection unit 35 rectifies and converts the input high-frequency voltage into a DC voltage, and obtains a high DC voltage when the electrode unit 31 is not touched and a reduced DC voltage when the electrode unit 31 is touched. Further, the detection unit 35 calculates the difference between the DC voltages, and determines that the touch has been made when the difference value is equal to or greater than a predetermined value.

図１０に検知部３５の電圧検知動作を示す。電圧Ｖ１はタッチしないときに得られた直流電圧、時刻ｔ１でパネル部１の電極部２の対向する位置をタッチしたとき直流電圧Ｖ２が得られ、検知部３５はＶ１−Ｖ２を演算し、この演算結果ΔＶを得る。このΔＶが所定値以上あるときタッチしたと判定するものである。   FIG. 10 shows the voltage detection operation of the detection unit 35. The voltage V1 is a DC voltage obtained when not touching, and a DC voltage V2 is obtained when the position where the electrode part 2 of the panel part 1 faces is touched at time t1, and the detection part 35 calculates V1-V2. An operation result ΔV is obtained. When this ΔV is greater than or equal to a predetermined value, it is determined that the touch has been made.

図１１には、このタッチキーを電磁調理器に組み込んだ例を示す。電磁調理器の金属製筐体３６を台３７に組み込んでいる。電極部３１に設けた補助電極部３１ａに接触子３４が接触する。接触子３４は、発振部３３、検知部３５などを搭載したプリント基板部３８に取付けられている。また、接触子３４は一部曲げるなどの構造を持たせ、バネ製を有し、補助電極部３１ａに押し当てている。そして、図１２に示すように、パネル部３０の裏面から見た電極部３１の面積が大きく、補助電極部３１ａの面積は小さく設定し、電極部３１の上をタッチすれば大きな電圧差が得られ、補助電極部３１ａの上をタッチすれば小さな電圧差が得られるよう構成し、電極部３１の上をタッチしたときのみタッチしたと判定するものである。このようにパネル部３０にタッチキーを設けることにより、調理物を見ながら操作できるようになっている。
特開２００３−２２４４５９号公報 FIG. 11 shows an example in which this touch key is incorporated in an electromagnetic cooker. A metal casing 36 of the electromagnetic cooker is incorporated in the base 37. The contact 34 comes into contact with the auxiliary electrode part 31 a provided in the electrode part 31. The contact 34 is attached to a printed circuit board unit 38 on which the oscillation unit 33, the detection unit 35, and the like are mounted. Further, the contact 34 has a structure such as a partial bending, is made of a spring, and is pressed against the auxiliary electrode portion 31a. Then, as shown in FIG. 12, if the area of the electrode part 31 is large when viewed from the back surface of the panel part 30 and the area of the auxiliary electrode part 31a is set small, and touching the electrode part 31, a large voltage difference is obtained. Thus, a small voltage difference is obtained by touching the auxiliary electrode portion 31a, and it is determined that the touch is made only when the electrode portion 31 is touched. Thus, by providing a touch key in the panel part 30, it can operate | move, seeing a foodstuff.
Japanese Patent Laid-Open No. 2003-224459

しかしながら、前記従来の構成では、パネル部３０と金属製筐体３６との距離ｄが変化したとき検知感度が変わってしまう。すなわち、距離ｄが小さいとき、電極部３１に印加された高周波電圧は金属製筐体３６にもバイパスされ、パネル部３０を指でタッチしても所定電圧の電圧降下が得られず検知感度が低下する。また、逆に距離ｄが大きいとき、検知感度は上がりパネル部３０の所定位置から外れた場所をタッチしても、タッチしたと判定してしまうという課題があった。   However, in the conventional configuration, when the distance d between the panel unit 30 and the metal housing 36 is changed, the detection sensitivity is changed. That is, when the distance d is small, the high-frequency voltage applied to the electrode unit 31 is also bypassed to the metal casing 36, and even if the panel unit 30 is touched with a finger, a voltage drop of a predetermined voltage cannot be obtained and the detection sensitivity is improved. descend. On the other hand, when the distance d is large, the detection sensitivity is increased, and there is a problem that even if a place outside the predetermined position of the panel unit 30 is touched, it is determined that the touch has been made.

本発明は、前記従来の課題を解決するもので、パネル部であるプレートと金属製筐体との間の距離が変化しても、あるいはばらついても検知感度に変動のない安定したタッチキーを用いた電磁調理器を提供することを目的とする。 The present invention is the one that solves the conventional problem, even if the distance between the plate and the metallic chasis is panel portion is changed, or a stable touch key over no fluctuation in detection sensitivity fluctuates It aims at providing the used electromagnetic cooker.

前記従来の課題を解決するために、本発明のタッチキーを用いた電磁調理器は、アース電位に設定された金属製筐体と、電気絶縁物よりなり、鍋を置くための表示部及びタッチ
キーが設けられたプレートと、前記表示部の下部に設け前記鍋を加熱する加熱コイルと、を備え、前記タッチキーは、前記プレートの裏面に設けた第１の電極部と、前記第１の電極部と対面する側の面に第２の電極部を有する電極基板部と、前記第１の電極部と前記第２の電極部とを電気的に接続する接続部と、前記第２の電極部に所定の周波数の電圧を印加する発振部と、前記第２の電極部の出力電圧を検知する検知部とを備え、前記電極基板部は、前記第２の電極部と反対面に前記金属製筐体に接続された第３の電極部を有する構成にしたものである。 In order to solve the conventional problems, electromagnetic cooker with touch key over the present invention includes a metal housing which is set to the ground potential, Ri name from an electrically insulating material, and a display unit for placing the pan touch
A plate provided with a key, and a heating coil provided at a lower portion of the display unit for heating the pan, wherein the touch key includes a first electrode unit provided on a back surface of the plate , and the first electrode an electrode portion and the facing sides of the second electrode collector to have a portion electrode substrate to the surface portion, and a connecting portion for electrically connecting the first electrode portion and the second electrode portion, the second an oscillator for applying a voltage of a predetermined frequency to the electrode portion of, and a detecting section for detecting the output voltage of the second electrode portion, the electrode substrate portion, on the opposite surface and the second electrode portion it is obtained by a configuration having a third electrode portion connected to the metal housing.

これによって、第１あるいは第２の電極部に印加される高周波電圧は、第２の電極部と電極基板部、第３の電極部で構成される容量値のみに影響されることとなり、第２の電極部と電極基板部、第３の電極部で構成される容量値は一定で、プレートと金属製筐体との距離が変化しても、あるいはばらついても高周波電圧は影響されず、検知電圧は一定で検知感度に変動のない安定したものとなる。 As a result, the high-frequency voltage applied to the first or second electrode portion is affected only by the capacitance value constituted by the second electrode portion, the electrode substrate portion, and the third electrode portion. The capacitance value composed of the electrode part, the electrode substrate part, and the third electrode part is constant, and even if the distance between the plate and the metal casing changes or varies, the high-frequency voltage is not affected and is detected. The voltage is constant and stable with no variation in detection sensitivity.

本発明のタッチキーを用いた電磁調理器は、プレートと金属製筐体との間の距離が変化しても、あるいはばらついても検知感度に変動のない安定したものとなる。 Electromagnetic range using a touch key over the present invention, even if the distance changes between the plate and the metallic chasis, or even becomes stable without variations in the detection sensitivity varies.

第１の発明は、アース電位に設定された金属製筐体と、電気絶縁物よりなり、鍋を置くための表示部及びタッチキーが設けられたプレートと、前記表示部の下部に設け前記鍋を加熱する加熱コイルと、を備え、前記タッチキーは、前記プレートの裏面に設けた第１の電極部と、前記第１の電極部と対面する側の面に第２の電極部を有する電極基板部と、前記第１の電極部と前記第２の電極部とを電気的に接続する接続部と、前記第２の電極部に所定の周波数の電圧を印加する発振部と、前記第２の電極部の出力電圧を検知する検知部とを備え、前記電極基板部は、前記第２の電極部と反対面に前記金属製筐体に接続された第３の電極部を有するとすることにより、第１あるいは第２の電極部に印加される高周波電圧は、第２の電極部と電極基板部、第３の電極部で構成される容量値のみに影響されることとなり、第２の電極部と電極基板部、第３の電極部で構成される容量値は一定で、プレートと金属製筐体との距離が変化しても、あるいはばらついても高周波電圧は影響されず、検知電圧は一定で検知感度に変動のない安定したものとなる。 The first invention includes a metal housing which is set to the ground potential, Ri name from electrically insulating material, a plate display unit and a touch key is provided for placing the pan, the provided at a lower portion of the display unit comprising a heating coil for heating a pan, wherein the touch key is used, the number and the first electrode portion provided on the rear surface of said plate, said second electrode portions on the surface of the side facing the first electrode portion and electrodes substrate portion to a connecting portion which connects the said first electrode portion and the second electrode portion electrically, an oscillator for applying a voltage of a predetermined frequency to the second electrode portions, and a detector for detecting an output voltage of the second electrode portion, the electrode substrate portion includes a third electrode portion connected to the metal housing to the opposite surface and the second electrode portion Thus, the high-frequency voltage applied to the first or second electrode portion is the same as that of the second electrode portion and the electrode base. Parts, will be influenced only constituted capacitance value by the third electrode portion, the second electrode portion and the electrode substrate portion, with the capacitance constituted by the third electrode part fixed, plate and metal Even if the distance to the housing changes or varies, the high-frequency voltage is not affected, and the detection voltage is constant and the detection sensitivity does not vary.

また、タッチキーを用いた電磁調理器とすることにより、調理物を見ながらプレート表面で操作でき確実動作を実現できる。  In addition, by using an electromagnetic cooker using touch keys, it is possible to operate on the plate surface while watching the cooked food, thereby realizing a reliable operation.

第２の発明は、特に、第１の発明において、第２の電極部は、電極基板部を挟んで第３の電極部に対向する面積を第３の電極部に対向しない面積より大きく設定したことにより、第２の電極部に印加した高周波電圧が金属製筐体から受ける影響は小さくでき安定したタッチキーを実現できる。   In the second invention, in particular, in the first invention, the area of the second electrode portion facing the third electrode portion across the electrode substrate portion is set larger than the area not facing the third electrode portion. Accordingly, the influence of the high frequency voltage applied to the second electrode portion from the metal casing can be reduced, and a stable touch key can be realized.

第３の発明は、特に、第１または第２の発明において、接続部は電気的に導通する弾性体で構成したことにより、電極基板部をパネル部に押し付け、第１の電極部と第２の電極部の導通を確実にし、プレートと金属製筐体との距離が変化しても感度の変化のない安定したタッチキーを実現できる。 According to a third aspect of the invention, in particular, in the first or second aspect of the invention, the connection portion is made of an electrically conductive elastic body, so that the electrode substrate portion is pressed against the panel portion, and the first electrode portion and the second electrode portion are pressed. Thus, it is possible to realize a stable touch key that does not change in sensitivity even if the distance between the plate and the metal casing changes.

第４の発明は、特に、第１〜第３のいずれか１つの発明において、接続部は導電性ゴムで構成したことにより、第１の電極部と第２の電極部の導通を確実にし、プレートと金属製筐体との距離が変化しても感度の変化のない安定したタッチキーを実現できる。 In the fourth invention, in particular, in any one of the first to third inventions, the connection portion is made of conductive rubber, thereby ensuring conduction between the first electrode portion and the second electrode portion, Even if the distance between the plate and the metal casing changes, it is possible to realize a stable touch key that does not change in sensitivity.

第５の発明は、特に、第１〜第３のいずれか１つの発明において、接続部は金属製バネ
で構成したことにより、第１の電極部と第２の電極部の導通を確実にし、プレートと金属製筐体との距離が変化しても感度の変化のない安定したタッチキーを実現できる。 In the fifth invention, in particular, in any one of the first to third inventions, the connection portion is constituted by a metal spring, thereby ensuring conduction between the first electrode portion and the second electrode portion, Even if the distance between the plate and the metal casing changes, it is possible to realize a stable touch key that does not change in sensitivity.

第６の発明は、特に、第１〜第５のいずれか１つの発明において、金属製筐体に設けたバネを備え、前記バネを第３の電極部に接触させ電極基板部をプレートに押し付ける構成としたことにより、第３の電極部を確実にアース電位にし、かつ電極基板部をプレートに押し付けることができ、プレートと金属製筐体との距離が変化しても感度の変化のない安定したタッチキーを実現できる。 A sixth invention is particularly, in any one invention of the first to fifth, with the bus Ne provided in a metal housing, the spring in the third is brought into contact with the electrode plate of the electrode substrate portion By adopting the pressing structure, the third electrode portion can be reliably set to the ground potential, and the electrode substrate portion can be pressed to the plate , and the sensitivity does not change even if the distance between the plate and the metal casing changes. A stable touch key can be realized.

以下、本発明の実施の形態について図面を用いて説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１、図２は、本発明の実施の形態１におけるタッチキーを示すものである。 (Embodiment 1)
1 and 2 show a touch key according to Embodiment 1 of the present invention.

図に示すように、本実施の形態におけるタッチキーは、ガラスなどの表面の平らな電気絶縁物よりなるパネル部１と、パネル部１の裏面に設けた第１の電極部２と、第１の電極部２の対面側に第２の電極部３を有し、かつ第２の電極部３と反対面に第３の電極部４を有する電極基板部５と、第１の電極部２と第２の電極部３とを電気的に接続する導電性の接続部６と、第２の電極部３に所定の周波数の電圧を印加する発振部７と、第２の電極部３の出力電圧を検知する検知部８とを有し、第３の電極部４をアース電位に接続しアース電位に保持するものである。   As shown in the figure, the touch key in the present embodiment includes a panel portion 1 made of a flat electrical insulator such as glass, a first electrode portion 2 provided on the back surface of the panel portion 1, a first An electrode substrate portion 5 having a second electrode portion 3 on the opposite side of the electrode portion 2 and having a third electrode portion 4 on the opposite surface of the second electrode portion 3; A conductive connection part 6 that electrically connects the second electrode part 3, an oscillation part 7 that applies a voltage of a predetermined frequency to the second electrode part 3, and an output voltage of the second electrode part 3 The third electrode unit 4 is connected to the ground potential and held at the ground potential.

そして、第２の電極部３に発振部７で発生させた高周波電圧を、接続部６を介して第１の電極部２に印加する。ここで、パネル部１の第１の電極部２に対向する表面部位置を指９で触れたとき、高周波電圧は第１の電極部２、パネル部１、指９を通じてバイパスし、第１の電極部２に現れる電圧は指９でタッチしないときの電圧より低下する。検知部８は、入力された高周波電圧を整流して直流電圧に変換し、第１の電極部２にタッチしないときには高い直流電圧を、第１の電極部２にタッチしたときには低下した直流電圧を得る。さらに、検知部８はこの直流電圧の差を演算し、差の値が所定値以上あるときタッチしたと判定するものである（背景技術と同じ）。   Then, the high-frequency voltage generated by the oscillation unit 7 in the second electrode unit 3 is applied to the first electrode unit 2 through the connection unit 6. Here, when the surface portion of the panel portion 1 facing the first electrode portion 2 is touched with the finger 9, the high frequency voltage is bypassed through the first electrode portion 2, the panel portion 1, and the finger 9, The voltage appearing at the electrode unit 2 is lower than the voltage when the finger 9 does not touch. The detection unit 8 rectifies and converts the input high frequency voltage into a DC voltage. obtain. Further, the detection unit 8 calculates the difference between the DC voltages, and determines that the touch is made when the difference value is equal to or greater than a predetermined value (same as the background art).

図２は、このタッチキーを有する電磁調理器の金属製筐体１１を台１２に組み込んだ構成例を示す。電極基板部５には第２の電極部３とつながったパターン１４を有し、このパターン１４にコネクタ１５が接続されている。このコネクタ１５よりリード線１６を介して発振部７や検知部８を搭載した電子回路搭載基板１０に接続されている。また、電極基板部５の第３の電極部４は、アース電位に設定された金属製筐体１１と金属製筐体１１に設けたバネ１３を介して接続され、アース電位に設定されている。したがって、第１の電極部２あるいは第２の電極部３に印加される高周波電圧は、第１の電極部２あるいは第２の電極部３と金属製筐体１１とで構成される浮遊容量による影響は受けず、第２の電極部３と電極基板部５、第３の電極部４で構成される容量値のみに影響される。この第２の電極部３と電極基板部５、第３の電極部４で構成される容量値は一定で、パネル部１と金属製筐体１１との距離ｄが変化しても高周波電圧は影響されず、検知電圧は一定で検知感度に変動のない安定したものとなる。   FIG. 2 shows a configuration example in which a metal casing 11 of an electromagnetic cooker having this touch key is incorporated in a base 12. The electrode substrate portion 5 has a pattern 14 connected to the second electrode portion 3, and a connector 15 is connected to the pattern 14. The connector 15 is connected via a lead wire 16 to an electronic circuit mounting substrate 10 on which the oscillation unit 7 and the detection unit 8 are mounted. Further, the third electrode portion 4 of the electrode substrate portion 5 is connected to the metal casing 11 set to the earth potential via a spring 13 provided on the metal casing 11 and set to the earth potential. . Therefore, the high-frequency voltage applied to the first electrode part 2 or the second electrode part 3 depends on the stray capacitance formed by the first electrode part 2 or the second electrode part 3 and the metal casing 11. It is not affected, and is affected only by the capacitance value constituted by the second electrode portion 3, the electrode substrate portion 5, and the third electrode portion 4. The capacitance value constituted by the second electrode portion 3, the electrode substrate portion 5, and the third electrode portion 4 is constant, and the high-frequency voltage does not change even if the distance d between the panel portion 1 and the metal casing 11 changes. Without being affected, the detection voltage is constant and the detection sensitivity is stable without fluctuation.

このようにタッチキーを構成することで、電磁調理器などのパネル部１と金属製筐体１１との間の距離が狭いところにも実装することができる。図３は、電極基板部５にタッチキーが３個搭載されている構成例を示している。   By configuring the touch key in this way, the touch key can be mounted in a place where the distance between the panel unit 1 such as an electromagnetic cooker and the metal casing 11 is narrow. FIG. 3 shows a configuration example in which three touch keys are mounted on the electrode substrate unit 5.

第２の電極部３ａ、３ｂ、３ｃはパターン１４でコネクタ１５に接続されている。この
第２の電極部３ａ、３ｂ、３ｃの電極基板部５を挟んで対向する位置に第３の電極部４が設けられている。金属製筐体１１との浮遊容量の影響を小さくするためには、第２の電極部３ａ、３ｂ、３ｃのそれぞれの面積に対し、第３の電極部４の面積を大きく設定し、かつ高周波電流をアースに取られ感度を落とさないようにするために、第２の電極部３ａ、３ｂ、３ｃの面積を小さく設定している。 The second electrode portions 3 a, 3 b, 3 c are connected to the connector 15 with a pattern 14. A third electrode portion 4 is provided at a position facing the second electrode portions 3a, 3b, and 3c across the electrode substrate portion 5. In order to reduce the influence of the stray capacitance with the metal casing 11, the area of the third electrode part 4 is set larger than the area of each of the second electrode parts 3a, 3b, 3c, and the high frequency The area of the second electrode portions 3a, 3b, and 3c is set to be small so that the current is grounded and the sensitivity is not lowered.

以上のように、本実施の形態では、第２の電極部３と第３の電極部４を有する電極基板部５を設け、第３の電極部４をアースすることにより、安定確実に動作し、狭い場所にも組み込むことができるタッチキーを提供することができるものである。なお、第３の電極部４は、前記したように大きい方が金属製筐体１１との浮遊容量の影響を受けにくく安定に動作するが、小さくして、場合によっては第２の電極部３の面積よりも小さくしてもよい。このとき、金属製筐体１１との浮遊容量の影響が出てくるが、第３の電極部４の存在で浮遊容量の影響を軽減することができる。   As described above, in the present embodiment, the electrode substrate portion 5 having the second electrode portion 3 and the third electrode portion 4 is provided, and the third electrode portion 4 is grounded to operate stably and reliably. It is possible to provide a touch key that can be incorporated even in a narrow place. As described above, the larger third electrode portion 4 is less affected by the stray capacitance with the metal casing 11 and operates stably. It may be smaller than the area. At this time, the influence of the stray capacitance with the metal casing 11 appears, but the presence of the third electrode portion 4 can reduce the influence of the stray capacitance.

（実施の形態２）
図４は、本発明の実施の形態２におけるタッチキーを示すものである。実施の形態１と同一要素については同一符号を付してその説明を省略する。 (Embodiment 2)
FIG. 4 shows a touch key according to Embodiment 2 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

図に示すように、本実施の形態におけるタッチキーの第２の電極部３は、第３の電極部４の真上になく、ずらせて配置し、電極基板部５を挟んで第３の電極部４に対向する面積Ｓ２を、第３の電極部４に対向しない面積Ｓ１より大きく設定したものである。その他の構成は実施の形態１と同じである。   As shown in the figure, the second electrode portion 3 of the touch key in the present embodiment is not disposed directly above the third electrode portion 4 but is shifted from the third electrode portion 3 with the electrode substrate portion 5 interposed therebetween. The area S2 facing the portion 4 is set larger than the area S1 not facing the third electrode portion 4. Other configurations are the same as those of the first embodiment.

このように、本実施の形態では、第２の電極部３と第３の電極部４の関係において、面積Ｓ２を面積Ｓ１より大きく設定したことにより、第２の電極部３に印加した高周波電圧が金属製筐体１１から受ける影響は小さくでき安定したタッチキーを実現できる。すなわち、金属製筐体１１との浮遊容量の影響を大きく軽減でき、第２の電極部３、第３の電極部４、あるいは電極基板部５などの設計余裕度を広げ、かつ安定動作のタッチキーが提供できるものである。   As described above, in the present embodiment, in the relationship between the second electrode portion 3 and the third electrode portion 4, the high frequency voltage applied to the second electrode portion 3 is set by setting the area S2 to be larger than the area S1. Is less affected by the metal casing 11, and a stable touch key can be realized. That is, the influence of the stray capacitance with the metal casing 11 can be greatly reduced, the design margin of the second electrode unit 3, the third electrode unit 4, or the electrode substrate unit 5 is expanded, and a stable operation touch is achieved. A key can be provided.

（実施の形態３）
次に、本発明の実施の形態３におけるタッチキーについて説明する。 (Embodiment 3)
Next, the touch key in Embodiment 3 of this invention is demonstrated.

実施の形態１における第１の電極部２と第２の電極部３とを電気的に接続する接続部６は、第２の電極部３に印加された高周波電圧を確実に第１の電極部２に伝えなければならないため、電気的に導通するものでなければならない。しかしながら、伝えるのは高周波電圧であるため、直流抵抗は有していても使用周波数に対して低いインピーダンスであればよい。   The connection portion 6 that electrically connects the first electrode portion 2 and the second electrode portion 3 in the first embodiment reliably supplies the high-frequency voltage applied to the second electrode portion 3 to the first electrode portion. It must be electrically conductive because it must be communicated to 2. However, since it is a high frequency voltage that is transmitted, even if it has a DC resistance, it only needs to have a low impedance with respect to the operating frequency.

そこで、本実施の形態における接続部６は、導電性であり、しかも弾性体で構成しているものである。その他の構成は実施の形態１と同じである。   Therefore, the connecting portion 6 in the present embodiment is conductive and is made of an elastic body. Other configurations are the same as those of the first embodiment.

このように、本実施の形態では、接続部６で電極基板部５をパネル部１に押し付け、第１の電極部２と第２の電極部３の導通を確実にし、パネル部１と金属製筐体１１との距離が変化しても感度の変化のない安定したタッチキーを実現できる。   As described above, in the present embodiment, the electrode substrate portion 5 is pressed against the panel portion 1 by the connecting portion 6 to ensure conduction between the first electrode portion 2 and the second electrode portion 3, and the panel portion 1 and the metal are made of metal. A stable touch key that does not change in sensitivity even when the distance to the housing 11 changes can be realized.

（実施の形態４）
次に、本発明の実施の形態４におけるタッチキーについて説明する。 (Embodiment 4)
Next, a touch key according to Embodiment 4 of the present invention will be described.

本実施の形態における接続部６は、導電性ゴムで構成しているものである。具体的には
、図５に示すように、接続部６に用いた導電ゴムを電極基板部５の第２の電極部３に接着し、他端の第１の電極部２に接触する部分を押し付けられると曲がりやすく、例えば、先細で複数の山形状に加工することにより、第１の電極部２との接続を弾力によってより確実にしている。 The connection part 6 in this Embodiment is comprised with conductive rubber. Specifically, as shown in FIG. 5, the conductive rubber used for the connecting portion 6 is bonded to the second electrode portion 3 of the electrode substrate portion 5, and the portion that contacts the first electrode portion 2 at the other end is attached. When pressed, it is easy to bend, and for example, it is tapered and processed into a plurality of mountain shapes, so that the connection with the first electrode portion 2 is made more reliable by elasticity.

このように、本実施の形態では、接続部６を導電性ゴムで構成していることにより、第１の電極部２と第２の電極部３の導通を確実にし、パネル部１と金属製筐体１１との距離が変化しても感度の変化のない安定したタッチキーを実現できる。   Thus, in this Embodiment, the connection part 6 is comprised with conductive rubber, thereby ensuring the electrical connection between the first electrode part 2 and the second electrode part 3, and the panel part 1 and the metal are made of metal. A stable touch key that does not change in sensitivity even when the distance to the housing 11 changes can be realized.

（実施の形態５）
次に、本発明の実施の形態５におけるタッチキーについて説明する。 (Embodiment 5)
Next, a touch key according to Embodiment 5 of the present invention will be described.

本実施の形態における接続部６は、図６、図７に示すように、金属製バネ６ａで構成しているものである。具体的には、金属製バネ６ａの基板部四隅を第２の電極部３にハンダ付け１７している。   The connection part 6 in this Embodiment is comprised with the metal springs 6a as shown in FIG. 6, FIG. Specifically, the four corners of the substrate portion of the metal spring 6 a are soldered 17 to the second electrode portion 3.

このように、本実施の形態では、接続部６を金属製バネ６ａで構成していることにより、第１の電極部２と第２の電極部３の導通を確実にし、パネル部１と金属製筐体１１との距離が変化しても感度の変化のない安定したタッチキーを実現できる。特に、パネル部１の表面で調理する際に高温が加わっても何ら問題がなく、信頼性の高いタッチキーを提供できる。   Thus, in this Embodiment, the connection part 6 is comprised by the metal springs 6a, thereby ensuring the conduction between the first electrode part 2 and the second electrode part 3, and the panel part 1 and the metal A stable touch key that does not change in sensitivity even when the distance from the housing 11 changes can be realized. In particular, there is no problem even when a high temperature is applied when cooking on the surface of the panel unit 1, and a highly reliable touch key can be provided.

（実施の形態６）
次に、本発明の実施の形態６におけるタッチキーについて説明する。 (Embodiment 6)
Next, a touch key according to Embodiment 6 of the present invention will be described.

本実施の形態においては、実施の形態１で示した通り、金属製筐体１１と、この筐体１１に設けたバネ１３とを備え、バネ１３を第３の電極部４に接触させ電極基板部５をパネル部１に押し付ける構成としているものである。バネ１３は金属製筐体１１から直接きり起こし形成しているが、当然、他のバネ材でバネ１３を形成し用いてもよい。さらに、バネ１３を金属製筐体１１と同一の部材で構成し、これを第３の電極部４に接触させ、第３の電極部４の電位をアース電位に設定しているが、電気的に非道通の素材でバネ１３を構成すれば、第３の電極部４を別の配線などによりアース電位に設定すればよい。   In the present embodiment, as shown in the first embodiment, a metal casing 11 and a spring 13 provided on the casing 11 are provided, and the spring 13 is brought into contact with the third electrode portion 4 to form an electrode substrate. The portion 5 is pressed against the panel portion 1. The spring 13 is directly raised from the metal casing 11, but naturally, the spring 13 may be formed by using other spring materials. Further, the spring 13 is made of the same member as that of the metal casing 11 and is brought into contact with the third electrode portion 4 so that the potential of the third electrode portion 4 is set to the ground potential. If the spring 13 is made of a non-conductive material, the third electrode portion 4 may be set to the ground potential by another wiring or the like.

このように、本実施の形態では、バネ１３を備えることにより、第３の電極部４を確実にアース電位にし、かつ電極基板部５をパネル部１に押し付けることができ、パネル部１と金属製筐体１１との距離が変化しても感度の変化のない安定したタッチキーを実現できる。   Thus, in this embodiment, by providing the spring 13, the third electrode portion 4 can be reliably set to the ground potential, and the electrode substrate portion 5 can be pressed against the panel portion 1. A stable touch key that does not change in sensitivity even when the distance from the housing 11 changes can be realized.

（実施の形態７）
図８は、本発明の実施の形態７における、タッチキーを用いた電磁調理器を示すものである。 (Embodiment 7)
FIG. 8 shows an electromagnetic cooker using touch keys in Embodiment 7 of the present invention.

本実施の形態においては、電磁調理器１８のプレート１９上に、第１の電極部２の対向位置を示す部位であるタッチキー２０、２１を設け、調理物を見ながらタッチキー２０、２１を操作できるようにしている。プレート１９には右と左に鍋などを置く表示部２２、２３があり、この表示部２２、２３の下部に加熱コイルがあり、加熱コイルから発生する高周波磁界により表示部２２、２３上の鍋などに誘導電流を流し加熱するものである。さらに、プレート１９上には鍋などを直接加熱することができるヒータ２４を設けている。   In the present embodiment, touch keys 20 and 21 which are portions indicating the opposed positions of the first electrode unit 2 are provided on the plate 19 of the electromagnetic cooker 18, and the touch keys 20 and 21 are viewed while watching the food. It can be operated. The plate 19 has display units 22 and 23 for placing pans and the like on the right and left sides. A heating coil is provided below the display units 22 and 23, and the pans on the display units 22 and 23 are generated by a high-frequency magnetic field generated from the heating coil. Inductive current is passed through and heated. Furthermore, a heater 24 that can directly heat a pan or the like is provided on the plate 19.

この電磁調理器１８は、調理台２５に組み込み使用するもので、電磁調理器１８の正面
にはロースター２６、表示部２７、スイッチ２８などがある。また、前述のタッチキー２０、２１は操作のしやすさから電磁調理器１８の前面正面部上に設けてある。 The electromagnetic cooker 18 is used by being incorporated in the cooking table 25, and includes a roaster 26, a display unit 27, a switch 28, and the like on the front surface of the electromagnetic cooker 18. Further, the touch keys 20 and 21 are provided on the front face of the electromagnetic cooker 18 for ease of operation.

このように、本実施の形態では、各実施の形態１〜６におけるタッチキーを用いた電磁調理器とすることにより、調理物を見ながらパネル部表面で操作できる確実動作のタッチキー付き電磁調理器を実現できる。なお、タッチキーは小型で薄く構成できるため電磁調理器用に非常に有用である。   Thus, in this embodiment, by using the electromagnetic cooker that uses the touch key in each of the first to sixth embodiments, electromagnetic cooking with a touch key that can be operated on the surface of the panel unit while watching the cooked food is possible. Can be realized. In addition, since a touch key is small and can be comprised thinly, it is very useful for electromagnetic cookers.

以上のように、本発明にかかるタッチキーとこれを用いた電磁調理器は、パネル部と金属製筐体との間の距離が変化しても、あるいはばらついても検知感度に変動のない安定したものとなる。特に、タッチキーは電磁調理器への適用だけでなく、電子レンジなど家電機器あるいは各種の機器への用途にも適用できる。   As described above, the touch key according to the present invention and the electromagnetic cooker using the touch key are stable with no change in detection sensitivity even when the distance between the panel unit and the metal casing changes or varies. Will be. In particular, the touch key can be applied not only to an electromagnetic cooker but also to home appliances such as a microwave oven or various devices.

本発明の実施の形態１〜４、６におけるタッチキーのブロック図Block diagram of touch keys in the first to fourth and sixth embodiments of the present invention 同タッチキーを筐体に組み込んだ状態の断面図Sectional view of the touch key assembled in the housing 同タッチキーの構成例を示す平面図Plan view showing a configuration example of the touch key 本発明の実施の形態２におけるタッチキーの電極基板部を示す平面図The top view which shows the electrode substrate part of the touch key in Embodiment 2 of this invention 本発明の実施の形態４におけるタッチキーの接続部を示す斜視図The perspective view which shows the connection part of the touch key in Embodiment 4 of this invention. 本発明の実施の形態５におけるタッチキーの接続部を示す断面図Sectional drawing which shows the connection part of the touch key in Embodiment 5 of this invention. 同タッチキーの接続部の平面図Top view of the touch key connection 本発明の実施の形態７における電磁調理器を示す斜視図The perspective view which shows the electromagnetic cooker in Embodiment 7 of this invention. 従来例のタッチキーのブロック図Block diagram of a conventional touch key 同タッチキーの検知電圧波形図Detection voltage waveform diagram of the touch key 同タッチキーを筐体に組み込んだ状態の断面図Sectional view of the touch key assembled in the housing 同タッチキーの電極部の平面図Plan view of electrode part of the touch key

１ パネル部
２ 第１の電極部
３、３ａ、３ｂ、３ｃ 第２の電極部
４ 第３の電極部
５ 電極基板部
６ 接続部
７ 発振部
８ 検知部
１１ 金属製筺体
１３ バネ
１８ 電磁調理器 DESCRIPTION OF SYMBOLS 1 Panel part 2 1st electrode part 3, 3a, 3b, 3c 2nd electrode part 4 3rd electrode part 5 Electrode board | substrate part 6 Connection part 7 Oscillation part 8 Detection part 11 Metal enclosure 13 Spring 18 Electromagnetic cooker

Claims (6)

アース電位に設定された金属製筐体と、電気絶縁物よりなり、鍋を置くための表示部及びタッチキーが設けられたプレートと、前記表示部の下部に設け前記鍋を加熱する加熱コイルと、を備え、前記タッチキーは、前記プレートの裏面に設けた第１の電極部と、前記第１の電極部と対面する側の面に第２の電極部を有する電極基板部と、前記第１の電極部と前記第２の電極部とを電気的に接続する接続部と、前記第２の電極部に所定の周波数の電圧を印加する発振部と、前記第２の電極部の出力電圧を検知する検知部とを備え、前記電極基板部は、前記第２の電極部と反対面に前記金属製筐体に接続された第３の電極部を有する電磁調理器。 A metal housing which is set to the ground potential, Ri name from electrically insulating material, a plate display unit and a touch key for placing the pan provided, heating coil for heating the pot is provided at a lower portion of the display unit When, wherein the touch key, a first electrode portion provided on the rear surface of the plate, and the first electrode portion and facing the surface on the side second electrodes substrate portion to have the electrode portion A connection part for electrically connecting the first electrode part and the second electrode part, an oscillation part for applying a voltage of a predetermined frequency to the second electrode part, and the second electrode part and a detecting section for detecting the output voltage, the electrode substrate portion, an electromagnetic cooker having a third electrode portion connected to the metal housing to the opposite surface and the second electrode portion. 第２の電極部は、電極基板部を挟んで第３の電極部に対向する面積を前記第３の電極部に対向しない面積より大きく設定した請求項１に記載の電磁調理器。 2. The electromagnetic cooker according to claim 1, wherein the second electrode portion has an area facing the third electrode portion across the electrode substrate portion set larger than an area not facing the third electrode portion. 接続部は電気的に導通する弾性体で構成した請求項１または２に記載の電磁調理器。 The electromagnetic cooker according to claim 1 or 2, wherein the connecting portion is made of an electrically conductive elastic body. 接続部は導電性ゴムで構成した請求項１〜３のいずれか１項に記載の電磁調理器。 The electromagnetic cooker according to any one of claims 1 to 3, wherein the connecting portion is made of conductive rubber. 接続部は金属製バネで構成した請求項１〜３のいずれか１項に記載の電磁調理器。 The electromagnetic cooker according to any one of claims 1 to 3, wherein the connecting portion is formed of a metal spring. 金属製筐体に設けたバネを備え、前記バネを第３の電極部に接触させ電極基板部をプレートに押し付ける構成とした請求項１〜５のいずれか１項に記載の電磁調理器。
Comprising a bar Ne provided in a metal chassis, an electromagnetic cooker according to any one of claims 1 to 5, the spring and the third electrode substrate portion in contact with the electrode portion is configured to press against the plate.
JP2005139539A 2005-05-12 2005-05-12 Electromagnetic cooker Expired - Fee Related JP4613684B2 (en)

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JP5013977B2 (en) * 2007-06-08 2012-08-29 三菱電機株式会社 Built-in cooking device
JP5231951B2 (en) * 2008-11-18 2013-07-10 株式会社東芝 Cooker
EP2395531A4 (en) * 2009-02-04 2017-01-04 Shin-Etsu Polymer Co. Ltd. Capacitance-type input switch
JP5186419B2 (en) * 2009-03-11 2013-04-17 リンナイ株式会社 Detection electrode of touch switch
JP5779485B2 (en) * 2011-09-08 2015-09-16 日立アプライアンス株式会社 refrigerator
FR3015128B1 (en) * 2013-12-13 2017-06-09 Valeo Systemes Thermiques PROXIMITY SENSOR
JP6872949B2 (en) * 2017-03-29 2021-05-19 大阪瓦斯株式会社 Built-in stove
JP7145778B2 (en) * 2019-02-08 2022-10-03 リンナイ株式会社 heating cooker
WO2024071022A1 (en) * 2022-09-29 2024-04-04 積水ポリマテック株式会社 Touch sensor, and connection structure for touch sensor and object to be connected

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