JP2004236476A - Electromagnetic coupler, power feeder and power receiver - Google Patents

Electromagnetic coupler, power feeder and power receiver Download PDF

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JP2004236476A
JP2004236476A JP2003024594A JP2003024594A JP2004236476A JP 2004236476 A JP2004236476 A JP 2004236476A JP 2003024594 A JP2003024594 A JP 2003024594A JP 2003024594 A JP2003024594 A JP 2003024594A JP 2004236476 A JP2004236476 A JP 2004236476A
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power
power supply
coil
power receiving
magnetic body
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JP3943038B2 (en
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Mitsuru Kuramochi
充 倉持
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Riso Kagaku Corp
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Riso Kagaku Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic coupler in which power receiving condition can be altered and alteration of power receiving condition can be recognized as variation in color when a light emitting means is employed as a body being power supplied. <P>SOLUTION: The electromagnetic coupler 1A comprises a power supply 2A, a power feeder 3A, and a power receiver 4A. The power feeder 3A has an electromagnetically open magnetic body 11 around which current feed wiring 12 is wound. The wiring 12 forms power feeding coils 12A and 12B by reversing the winding direction in the way of the magnetic body 11. A drive circuit 8A feeds an AC current to the power feeding coils 12A and 12B. The power receiver 4A has a tubular body 15 being inserted, relatively movably, into the magnetic body 11 and around which a power receiving coil 16 is wound wherein light emitting means D1 and D2 are connected, as bodies 17 being power supplied, to the opposite ends of the power receiving coil 16. Since winding direction of the power feeding coils 12A and 12B is reversed, lighting of the light emitting means D1 and D2 is switched when the tubular body 15 is moved along the magnetic body 11. Winding direction of the power feeding coils is reversed partially. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、電流が流れる給電用コイルを磁性体に巻き込み、受電用コイルが巻き込まれた筒状部材を磁性体に装着し、磁性体と筒状部材の相対的な移動や給電用コイルに流す電流を制御することにより給電用コイルに流れる電流を受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置と、この電磁気的結合装置を構成する給電装置と受電装置に関する。
【０００２】
【従来の技術】
従来、家庭用電源や電池等の電源から電力の供給を受ける場合、この電源や電源回路等に接続された配線にコネクタやソケット等を設け、配線に直接的な電気的接触を行うことにより電力を取り出していた。例えば、蛍光灯や電球等を利用した照明装置を設置する際には、配線上に設けられたコネクタやソケットに蛍光灯や電球等を取り付け、コネクタやソケットを介して電力の供給を受けていた。また、電飾装置を設ける場合においても、予め配線上に設けられたソケット等を介して電飾に電力を供給していた。さらに、防犯のためのセンサ等を設ける場合でも、予め決められた位置に設けられたコネクタ等を介してセンサ等に電力を供給していた。
この出願の発明に関連する先行技術文献情報としては下記のものがある。
【０００３】
【特許文献１】
特開平６−５１７０７号公報
【０００４】
【特許文献２】
特開２００２−８４０７号公報
【０００５】
このように、従来の電力を供給する方法としては、コネクタやソケット等のように機械的接触を介して供給する物が一般的であった。しかし、このような構成では、例えば使用者が蛍光灯や電球等の位置や個数を変更しようとした場合、電力を取り出す位置や個数が配線に直接的接触を持つコネクタやソケットの位置や個数によって決まって来る。このため、大きな設計変更や工事が必要となってしまうという課題がある。しかも、配線と直接的な電気的接触をもつコネクタやソケット等の場合、その接続部に機械的ストレスが集中してしまうため、短絡や断線、感電のおそれがあった。
【０００６】
【発明が解決しようとする課題】
ところで、上述した問題を解消するための対策として、磁気を用いて非接触により電力を供給する給電装置が提案されている。
【０００７】
図１１は上記提案されている給電装置の概略構成を示している。図１１に示す給電装置５１は、電源装置５２と配電装置５３を備えている。
【０００８】
電源装置５２は、電源５４、発振回路５５、分周回路５６、駆動回路５７を備えている。電源５４は、直流電流を駆動電源として発振回路５５、分周回路５６、駆動回路５７のそれぞれに出力している。発振回路５５は、所定の周波数の発振信号を発生して出力している。分周回路５６は、発振回路５５から出力された信号を所望の周波数に分周して分周信号を出力している。駆動回路５７は、分周回路５６から出力された分周信号を所定の周期で正負方向に切り替えて交流電流を出力している。
【０００９】
配電装置５３は、配線５８、配電手段５９、被給電体６０を備えている。配線５８は、環状に形成され、電源装置５２の駆動回路５７から電磁的に誘導されて出力された交流電流を流している。配電手段５９は、配線５８の近傍に設けられ、配線５８に流れる交流電流により電磁的に誘導された双方向電流が磁性体に巻かれた銅線に流されることにより配電を行うものである。被給電体６０は、配電手段５９の巻線に接続され、巻線に流れる双方向電流により駆動される。
【００１０】
上記構成による給電装置５１では、電源５４により発振回路５５を駆動させ、所定の周波数の信号を発生させる。発振回路５５により発生した信号は分周回路５６に入力される。分周回路５６は、入力された信号を所望の周波数に分周するための分周信号とその正負の向きを切り替えるための切替信号を駆動回路５７に出力する。駆動回路５７は、入力された分周信号と切替信号に基づいて所望の周期の信号を一定の周期で正負方向に切り替えて交流電流を出力する。この駆動回路５７から出力された交流電流は配線５８に流される。配線５８に流された交流電流は、配電手段５９の磁性体の巻線に電磁的に誘導される。これにより、配電手段５９の磁性体の巻線に双方向電流が流れる。そして、この双方向電流は、配電手段５９の巻線の両端に接続された被給電体６０に電力として供給される。
【００１１】
しかしながら、上述した図１１に示す給電装置５１では、駆動回路５７からの交流電流を流すための環状の配線５８と配電手段５９の巻線との間が磁気的に結合されており、配線５８上のどの位置でも配電手段５９の受電状態が同じであり、配線５８上の配電手段５９の位置に応じて受電状態を変えることができなかった。従って、この種の給電装置５１の被給電体６０に発光素子を用い、電飾装置として利用した場合には、発光手段への電流のＯＮ／ＯＦＦによる点灯／消灯の切換えしかできず、表示の自由度が低いという課題が生じる。
【００１２】
そこで、本発明は、上記問題点に鑑みてなされたものであり、受電状態を変化させることができ、被給電体として発光手段を用いた場合には、受電状態の変化を色の変化として認識することができる電磁気的結合装置を提供することを目的としている。
【００１３】
【課題を解決するための手段】
上記目的を達成するため、請求項１の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、前記給電用コイルの巻き方向が部分的に逆であることを特徴とする。
【００１４】
請求項２の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、前記給電用コイルの密集度が部分的に変化していることを特徴とする。
【００１５】
請求項３の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、前記給電用コイルが前記磁性体の複数箇所に設けられており、
前記給電用コイルを駆動する信号の位相とオン・オフとの少なくともいずれか一方を制御する駆動回路を備えたことを特徴とする。
【００１６】
請求項４の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、
前記受電用コイルが前記筒状部材の複数箇所に設けられ、
前記給電用コイルが前記受電用コイルの長さと同一又は整数倍以上の長さで前記磁性体の複数箇所に設けられ、
前記磁性体と前記筒状部材の相対的な移動に伴うコイル間の電位差により受電状態が変化することを特徴とする。
【００１７】
請求項５の発明は、請求項１〜４の何れかに記載の電磁気的結合装置において、前記被給電体が発光手段であることを特徴とする。
【００１８】
請求項６の発明は、請求項１〜４の何れかに記載の電磁気的結合装置において、前記磁性体および前記筒状部材が柔軟性を有することを特徴とする。
【００１９】
請求項７の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記磁性体に対して相対的に移動可能に取り付けられる筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置に用いられる給電装置であって、
前記給電用コイルは、部分的に巻き方向が逆転して前記磁性体に巻き込まれていることを特徴とする。
【００２０】
請求項８の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記磁性体に対して相対的に移動可能に取り付けられる筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置に用いられる給電装置であって、
前記給電用コイルは、密集度が部分的に変化して前記磁性体に巻き込まれていることを特徴とする。
【００２１】
請求項９の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記磁性体に対して相対的に移動可能に取り付けられる筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置に用いられる給電装置であって、
前記給電用コイルは、前記磁性体の複数箇所に設けられていることを特徴とする。
【００２２】
請求項１０の発明は、電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記給電用コイルに流れる電流が電磁気的に誘起される受電用コイルを有する受電装置とを備えた電磁気的結合装置に用いられる受電装置であって、
前記受電用コイルが筒状部材に巻き込まれており、該筒状部材が前記磁性体に対して相対的に移動可能に設けられることを特徴とする。
【００２３】
【発明の実施の形態】
図１は本発明による電磁気的結合装置の第１実施の形態を示す図、図２は図１の電磁気的結合装置における駆動回路の構成図、図３は図１の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【００２４】
まず、本発明による電磁気的結合装置の第１実施の形態を図１乃至図３に基づいて説明する。
【００２５】
図１に示すように、第１実施の形態の電磁気的結合装置１Ａ（１）は、電源装置２Ａ、給電装置３Ａ、受電装置４Ａを備えて構成される。
【００２６】
図１に示すように、電源装置２Ａは、更に電源５、発振回路６、分周回路７、駆動回路８Ａを備えている。電源５は、直流電流を駆動電源として発振回路６、分周回路７、駆動回路８Ａのそれぞれに出力している。発振回路６は、所定の周波数（例えば数十Ｈｚから数ｋＨｚ）の信号を発生して出力している。分周回路７は、発振回路６からの発振信号を分周しており、例えば数百Ｈｚから数十ｋＨｚの周波数の分周信号を発生して出力している。
【００２７】
駆動回路８Ａは、例えば図２に示すような回路により構成される。図２に示す駆動回路８Ａは、分周回路７の出力がインバータＮＯＴ１に入力している。インバータＮＯＴ１の出力は、並列接続されたインバータＮＯＴ２とインバータＮＯＴ３に入力している。そして、インバータＮＯＴ２の出力がトランジスタＴｒ１のベースに入力しており、インバータＮＯＴ３の出力がトランジスタＴｒ２のベースに入力している。トランジスタＴｒ１，Ｔｒ２とはダーリントン接続されている。トランジスタＴｒ１のコレクタとトランジスタＴｒ２のエミッタとの間には、トランジスタＴｒ２のエミッタ側をアノードとしてダイオードＤ１，Ｄ２が直列接続されている。さらに、トランジスタＴｒ１，Ｔｒ２の接続点Ｐ１から引き出された出力８ａには、後述する給電装置３Ｂの配線１２（第１給電用コイル１２Ａ側）に接続されている。
【００２８】
また、分周回路７の出力はインバータＮＯＴ４とインバータＮＯＴ５に入力している。そして、インバータＮＯＴ４の出力がトランジスタＴｒ３のベースに入力しており、インバータＮＯＴ５の出力がトランジスタＴｒ４のベースに入力している。トランジスタＴｒ３，Ｔｒ４とはダーリントン接続されている。トランジスタＴｒ３のコレクタとトランジスタＴｒ４のエミッタとの間には、トランジスタＴｒ４のエミッタ側をアノードとしてダイオードＤ３，Ｄ４が直列接続されている。さらに、トランジスタＴｒ３，Ｔｒ４の接続点Ｐ２から引き出された出力８ｂには、後述する給電装置３Ｂの配線１２（第２給電用コイル１２Ｂ側）に接続されている。
【００２９】
この駆動回路８Ａでは、分周回路７からの分周信号により交流電流の周期が決定され、後述する給電装置３Ａの第１給電用コイル１２Ａと第２給電用コイル１２Ｂに対し、数百Ｈｚから数十ｋＨｚの周波数で図３に示すような電圧を印加して交流電流を供給している。
【００３０】
給電装置３Ａは、磁性体１１と、磁性体１１の外周面に巻き込まれて固定された配線１２とを備えて構成される。磁性体１１は、電磁気的に開放された状態（環状に一体形成されていない状態）で構成される。図１の例では、直線状の棒状物で磁性体１１が形成されている。また、図１の例において、１本の配線１２により、第１給電用コイル１２Ａと第２給電用コイル１２Ｂの２つのコイルを形成している。さらに説明すると、駆動回路８の一方の出力８ａから配線１２が磁性体１１の下方から上方に向かって引き出される。磁性体１２の上方に引き出された配線１２は、磁性体１２の中央部に向かって右上がりに巻き込まれて所定長さの第１給電用コイル１２Ａを形成している（図１のＡ部）。この第１給電用コイル１２Ａを形成した配線１２は、磁性体１１の略中央部の位置から逆方向、すなわち右下がりに巻き込まれて第１給電用コイルと略同等の長さの第２給電用コイル１２Ｂを形成している（図１のＢ部）。磁性体１１の下方まで引き出された配線１２は、駆動回路８の他方の出力８ｂに接続される。
【００３１】
図１に示すように、受電装置４Ａは、筒状部材１５、受電用コイル１６、被給電体１７を備えて構成される。筒状部材１５は、磁性体で構成され、給電装置３Ａの配線１２が巻き込まれた磁性体１１に挿通可能な構成とされる。
【００３２】
受電用コイル１６は、筒状部材１５を磁性体１１に挿通した際に、磁性体１１に巻き込まれた第１給電用コイル１２Ａと略平行をなすように、筒状部材１５の外周面に第１給電用コイル１２Ａと同一方向に巻き込まれて固定されている。この受電用コイル１６は、給電用コイル１２Ａ，１２Ｂと略同等の長さで筒状部材１５に巻き込まれる。
【００３３】
被給電体１７は、例えばＬＥＤ（発光ダイオード）や電球等の発光手段で構成される。図１の例では、被給電体１７がＬＥＤであり、２つのＬＥＤＤ１，Ｄ２が受電用コイル１６の両端に互いに逆方向に接続されている。
【００３４】
上記構成による電磁気的結合装置１Ａでは、受電装置４Ａの筒状部材１５を給電装置３Ａの磁性体１１に挿通して取り付ける。そして、ＬＥＤＤ１，Ｄ２を取り付けた受電用コイル１６が磁性体１１の第１給電用コイル１２Ａと重なっている状態（図１のＡ部）では、駆動回路８Ａから図３に示すような電圧が第１給電用コイル１２Ａを介して受電用コイル１６に電磁的に誘起され、受電用コイル１６の両端に接続されたＬＥＤＤ２が点灯する。そして、受電装置４Ａの筒状部材１５を給電装置３Ａの磁性体１１に沿って下方に移動して受電用コイル１６が第２給電用コイル１２Ｂと重なる状態（図１のＢ部）になると、受電用コイル１６に誘起される電圧は図３のように方向が変化する。これにより、ＬＥＤＤ２が消灯してＬＥＤＤ１が点灯する。このように、給電装置３Ａの磁性体１１に巻き込まれる給電用コイル１２Ａ，１２Ｂの巻き方向を逆転させることにより、受電用コイル１６の両端に接続されたＬＥＤＤ１，Ｄ２の発光が切り替わる。
【００３５】
なお、図３において、ＬＥＤＤ１，Ｄ２の動作は、点灯確認できる意味であり、実際の駆動波形ではない。また、上記動作説明では、筒状部材１５を磁性体１１に沿って移動させているが、磁性体１１を筒状部材１５に沿って移動させても同様に作用する。すなわち、磁性体１１と筒状部材１５の相対的な移動によって受電用コイル１６に接続された２つのＬＥＤＤ１，Ｄ２の発光を切り替えることができる。
【００３６】
このように、第１実施の形態では、給電装置３Ａの磁性体１１に巻き込まれる配線１２を部分的にその巻き方向を逆にして給電用コイル１２Ａ，１２Ｂを形成している。これにより、駆動回路８Ａから給電用コイル１２Ａ，１２Ｂに電磁的に誘起される電圧は、第１給電用コイル１２Ａと第２給電用コイル１２Ｂとで逆になるので、磁性体１１に挿通される筒状部材１５の位置によって被給電体１７への受電状態を変化させることができる。その際、被給電体１７として異なる発光色（例えば緑色と赤色など）の発光手段を用いれば、受電状態の変化を色の変化として認識することができる。
【００３７】
次に、本発明による電磁気的結合装置の第２実施の形態を図４および図５に基づいて説明する。なお、第１実施の形態と同一の構成要素には同一番号を付して説明する。
【００３８】
図４は本発明による電磁気的結合装置の第２実施の形態を示す図、図５は図４の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【００３９】
図４に示すように、第２実施の形態の電磁気的結合装置１Ｂ（１）は、電源装置２Ｂ、給電装置３Ｂ、受電装置４Ｂを備えて構成される。
【００４０】
図４に示すように、電源装置２Ｂは、更に電源５、発振回路６、分周回路７、駆動回路８Ｂを備えている。電源５は、直流電流を駆動電源として発振回路６、分周回路７、駆動回路８Ｂのそれぞれに出力している。発振回路６は、所定の周波数（例えば数十Ｈｚから数ｋＨｚ）の信号を発生して出力している。分周回路７は、発振回路６からの発振信号を分周しており、例えば数百Ｈｚから数十ｋＨｚの周波数の分周信号を発生して出力している。
【００４１】
駆動回路８Ｂは、第１実施の形態と同様に、例えば図２に示すような回路により構成される。この駆動回路８Ｂでは、分周回路７からの分周信号により交流電流の周期が決定され、後述する給電装置３Ｂの第１給電用コイル１２Ａと第２給電用コイル１２Ｂに対し、数百Ｈｚから数十ｋＨｚの周波数で図５に示すような電圧を印加して交流電流を供給している。
【００４２】
給電装置３Ｂは、棒状の磁性体１１と、磁性体１１の外周面に巻き込まれて固定された配線１２とを備えて構成される。また、図４の例において、１本の配線１２により、第１給電用コイル１２Ａと第２給電用コイル１２Ｂを形成している。さらに説明すると、駆動回路８Ｂの一方の出力８ａから配線１２が磁性体１１の下方から上方に向かって引き出される。磁性体１１の上方に引き出された配線１２は、磁性体１１の中央部に向かって右上がりに巻き込まれて所定長さの第１給電用コイル１２Ａを形成している（図４のＡ部）。この第１給電用コイル１２Ａを形成した配線１２は、第１給電用コイル１２Ａの下方に部分的に巻き込みを行わない無巻線部分１８（図４のＣ部）を形成した後、磁性体１１の下方に向かって第１給電用コイル１２Ａと同方向の右上がりに巻き込まれて第１給電用コイル１２Ａと略同等長さの第２給電用コイル１２Ｂを形成している（図４のＢ部）。磁性体１１の下方まで引き出された配線１２は、駆動回路８Ｂの他方の出力８ｂに接続される。
【００４３】
図４に示すように、受電装置４Ｂは、筒状部材１５、受電用コイル１６、被給電体１７を備えて構成される。筒状部材１５は、磁性体で構成され、給電装置３Ａの配線１２が巻き込まれた磁性体１１に挿通可能な構成とされる。
【００４４】
受電用コイル１６は、筒状部材１５を磁性体１１に挿通した際に、磁性体１１に巻き込まれた２つの給電用コイル１２Ａ，１２Ｂと略平行をなすように、筒状部材１５の外周面に給電用コイル１２Ａ，１２Ｂと同一方向に巻き込まれて固定されている。この受電用コイル１６は、給電用コイル１２Ａ，１２Ｂと略同等の長さで筒状部材１５に巻き込まれる。
【００４５】
被給電体１７は、例えばＬＥＤ（発光ダイオード）や電球等の発光手段で構成される。図４の例では、被給電体１７がＬＥＤであり、２つのＬＥＤＤ１，Ｄ２が受電用コイル１６の両端に互いに同方向に接続されている。
【００４６】
上記構成による電磁気的結合装置１Ｂでは、受電装置４Ｂの筒状部材１５を給電装置３Ｂの磁性体１１に挿通して取り付ける。そして、ＬＥＤＤ１，Ｄ２を取り付けた受電用コイル１６が磁性体１１の第１給電用コイル１２Ａと重なっている状態（図４のＡ部）では、図５に示すような電圧が第１給電用コイル１２Ａを介して受電用コイル１６に電磁的に誘起され、ＬＥＤＤ１，Ｄ２が共に点灯する。そして、受電装置４Ｂの筒状部材１５を給電装置３Ｂの磁性体１１に沿って下方に移動して受電用コイル１６が無巻線部分１８に位置すると、受電用コイル１６に誘起される電圧が図５に示すように無くなり、ＬＥＤＤ１，Ｄ２が共に消灯する。そして、更に受電装置４Ｂの筒状部材１５を給電装置３Ｂの磁性体１１に沿って下方に移動して受電用コイル１６が第２給電用コイル１２Ｂと重なる状態（図４のＢ部）になると、図５に示すような電圧が第２給電用コイル１２Ｂを介して受電用コイル１６に誘起され、ＬＥＤＤ１，Ｄ２が再び点灯する。このように、給電装置３Ｂの磁性体１１に巻き込まれる給電用コイル１２Ａ，１２Ｂの間に無巻線部分１８を設けることにより、受電用コイル１６の両端に接続されたＬＥＤＤ１，Ｄ２の発光が点灯・消灯・点灯と変化する。
【００４７】
なお、図５において、ＬＥＤＤ１，Ｄ２の動作は、点灯確認できる意味であり、実際の駆動波形ではない。また、上記動作説明では、筒状部材１５を磁性体１１に沿って移動させているが、磁性体１１を筒状部材１５に沿って移動させても同様に作用する。
【００４８】
このように、第２実施の形態では、磁性体１１に巻き込まれる配線１２の配線密集度を部分的に変化させている。図４の例では、配線１２によって形成される第１給電用コイル１２Ａと第２給電用コイル１２Ｂとの間に無巻線部分１８を形成している。これにより、磁性体１１に挿通される筒状部材１５の位置によって被給電体１７への受電状態を変化させることができる。その際、被給電体１７として発光手段を用いれば、受電状態の変化を発光手段の点灯と消灯の動作変化として認識することができる。
【００４９】
次に、本発明による電磁気的結合装置の第３実施の形態を図６乃至図８に基づいて説明する。なお、第１実施の形態と同一の構成要素には同一番号を付して説明する。
【００５０】
図６は本発明による電磁気的結合装置の第３実施の形態を示す図、図７は図６の電磁気的結合装置における駆動回路の構成図、図８は図６の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【００５１】
図６に示すように、第３実施の形態の電磁気的結合装置１Ｃ（１）は、電源装置２Ｃ、給電装置３Ｃ、受電装置４Ｃを備えて構成される。
【００５２】
図６に示すように、電源装置２Ｃは、更に電源５、発振回路６、分周回路７、駆動回路８Ｃを備えている。電源５は、直流電流を駆動電源として発振回路６、分周回路７、駆動回路８Ｃのそれぞれに出力している。発振回路６は、所定の周波数（例えば数十Ｈｚから数ｋＨｚ）の信号を発生して出力している。分周回路７は、発振回路６からの発振信号を分周しており、例えば数百Ｈｚから数ｋＨｚの周波数の分周信号を発生して出力するしている。
【００５３】
駆動回路８Ｃは、図６に示すように、第１駆動回路８Ｃ１と第２駆動回路８Ｃ２を備えており、分周回路７から出力された分周信号により交流電流を出力している。さらに説明すると、駆動回路８Ｃは、例えば図７に示すような回路により構成される。図７において、第１駆動回路８Ｃ１は、分周回路７の出力がインバータＮＯＴ１に入力している。インバータＮＯＴ１の出力は、並列接続されたインバータＮＯＴ２とインバータＮＯＴ３に入力している。そして、インバータＮＯＴ２の出力がトランジスタＴｒ１のベースに入力しており、インバータＮＯＴ３の出力がトランジスタＴｒ２のベースに入力している。トランジスタＴｒ１，Ｔｒ２とはダーリントン接続されている。トランジスタＴｒ１のコレクタとトランジスタＴｒ２のエミッタとの間には、トランジスタＴｒ２のエミッタ側をアノードとしてダイオードＤ１，Ｄ２が直列接続されている。さらに、トランジスタＴｒ１，Ｔｒ２の接続点Ｐ１は、後述する給電装置３Ｃの第１給電用コイル１２Ａに接続されている。
【００５４】
また、分周回路７の出力はインバータＮＯＴ４とインバータＮＯＴ５に入力している。そして、インバータＮＯＴ４の出力がトランジスタＴｒ３のベースに入力しており、インバータＮＯＴ５の出力がトランジスタＴｒ４のベースに入力している。トランジスタＴｒ３，Ｔｒ４とはダーリントン接続されている。トランジスタＴｒ３のコレクタとトランジスタＴｒ４のエミッタとの間には、トランジスタＴｒ４のエミッタ側をアノードとしてダイオードＤ３，Ｄ４が直列接続されている。さらに、トランジスタＴｒ３，Ｔｒ４の接続点Ｐ２は、後述する給電装置３Ｃの第３給電用コイル１２Ｃに接続されている。
【００５５】
第２駆動回路８Ｃ２は、第１駆動回路８Ｃ１のインバータＮＯＴ１の出力が、並列接続されたインバータＮＯＴ６とインバータＮＯＴ７に入力している。そして、インバータＮＯＴ６の出力がトランジスタＴｒ５のベースに入力しており、インバータＮＯＴ７の出力がトランジスタＴｒ６のベースに入力している。トランジスタＴｒ５，Ｔｒ６とはダーリントン接続されている。トランジスタＴｒ５のコレクタとトランジスタＴｒ６のエミッタとの間には、トランジスタＴｒ６のエミッタ側をアノードとしてダイオードＤ５，Ｄ６が直列接続されている。さらに、トランジスタＴｒ５，Ｔｒ６の接続点Ｐ３は、後述する給電装置３Ｃの第２給電用コイル１２Ｂに接続されている。
【００５６】
また、分周回路７の出力がインバータＮＯＴ８とインバータＮＯＴ９に入力している。そして、インバータＮＯＴ８の出力がトランジスタＴｒ７のベースに入力しており、インバータＮＯＴ９の出力がトランジスタＴｒ８のベースに入力している。トランジスタＴｒ７，Ｔｒ８とはダーリントン接続されている。トランジスタＴｒ７のコレクタとトランジスタＴｒ８のエミッタとの間には、トランジスタＴｒ８のエミッタ側をアノードとしてダイオードＤ７，Ｄ８が直列接続されている。さらに、トランジスタＴｒ７，Ｔｒ８の接続点Ｐ４は、後述する給電装置３Ｃの第４給電用コイル１２Ｄに接続されている。
【００５７】
これら第１、第２駆動回路８Ｃ１，８Ｃ２では、分周回路７からの分周信号により交流電流の周期が決定される。そして、第１駆動回路８Ｃ１は、後述する給電装置３Ｃの第１給電用コイル１２Ａと第３給電用コイル１２Ｃに対し、数百Ｈｚから数十ｋＨｚの周波数で図８に示すような電圧を印加して交流電流を供給している。また、第２駆動回路８Ｃ２は、後述する給電装置３Ｃの第２給電用コイル１２Ｂと第４給電用コイル１２Ｄに対し、数百Ｈｚから数十ｋＨｚの周波数で図８に示すような電圧を印加して交流電流を供給している。
【００５８】
給電装置３Ｃは、棒状の磁性体１１と、磁性体１１の外周面に巻き込まれて固定された配線１２とを備えて構成される。図６の例において、各々独立した４本の配線１２により、磁性体１１の上方から第１給電用コイル１２Ａ、第２給電用コイル１２Ｂ、第３給電用コイル１２Ｃ、第４給電用コイル１２Ｄを形成している。
【００５９】
第１給電用コイル１２Ａは、磁性体１１の最上部に位置し、第１駆動回路８Ｃ１の一方の出力８ａ１から配線１２が磁性体１１の上方に引き出され、磁性体１１の下方に向かって右上がりに巻き込まれ、その先端が第１駆動回路８Ｃ１の他方の出力８ｂ１に接続される。第２給電用コイル１２Ｂは、第１給電用コイル１２Ａの下に位置し、第２駆動回路８Ｃ２の一方の出力８ａ２から第１給電用コイル１２Ａの近傍まで引き出され、磁性体１１の下方に向かって第１給電用コイル１２Ａと同一方向の右上がりに巻き込まれ、その先端が第２駆動回路８Ｃ２の他方の出力８ｂ２に接続される。第３給電用コイル１２Ｃは、第２給電用コイル１２Ｂの下に位置し、第１駆動回路８Ｃ１の一方の出力８ａ１から第２給電用コイル１２Ｂの近傍まで引き出され、磁性体１１の下方に向かって第１給電用コイル１２Ａと同一方向の右上がりに巻き込まれ、その先端が第１駆動回路８Ｃ１の他方の出力８ｂ１に接続される。第４給電用コイル１２Ｄは、第３給電用コイル１２Ｃの下に位置し、第２駆動回路８Ｃ２の一方の出力８ａ２から第３給電用コイル１２Ｃの近傍まで引き出され、磁性体１１の下方に向かって第１給電用コイル１２Ａと同一方向の右上がりに巻き込まれ、その先端が第２駆動回路８Ｃ２の他方の出力８ｂ２に接続される。なお、各給電用コイル１２Ａ〜１２Ｄは、略同等の長さで磁性体１１に巻き込まれる。
【００６０】
図６に示すように、受電装置４Ｃは、筒状部材１５、受電用コイル１６、被給電体１７を備えて構成される。筒状部材１５は、磁性体で構成され、給電装置３Ｃの配線１２が巻き込まれた磁性体１１に挿通可能な構成とされる。
【００６１】
受電用コイル１６は、筒状部材１５を磁性体１１に挿通した際に、磁性体１１に巻き込まれた第１乃至第４の給電用コイル１２Ａ〜１２Ｄと平行をなすように、筒状部材１５の外周面に給電用コイル１２Ａ〜１２Ｄと同一方向に巻き込まれて固定されている。この受電用コイル１６は、給電用コイル１２Ａ〜１２Ｄと略同等の長さで筒状部材１５に巻き込まれる。
【００６２】
被給電体１７は、例えばＬＥＤ（発光ダイオード）や電球等の発光手段で構成される。図６の例では、被給電体１７がＬＥＤであり、２つのＬＥＤＤ１，Ｄ２が受電用コイル１７の両端に互いに逆方向に接続されている。
【００６３】
上記構成による電磁気的結合装置１Ｃでは、受電装置４Ｃの筒状部材１５を給電装置３Ｃの磁性体１１に挿通して取り付ける。そして、ＬＥＤＤ１，Ｄ２を取り付けた受電用コイル１６が磁性体１１の第１給電用コイル１２Ａと重なっている状態（図６のＡ部）から第２給電用コイル１２Ｂと重なる状態（図６のＢ部）に移動させた場合、各駆動回路８Ｃ１，８Ｃ２の位相が逆転しているときは、受電用コイル１６に誘起される電圧が図８に示すように方向が変化する。これにより、受電用コイル１６が第１給電用コイル１２Ａ又は第３給電用コイル１２Ｃの何れかに重なっている状態（図６のＡ部）ではＬＥＤＤ２が点灯する。また、受電用コイル１６が給電用コイル１２Ａ〜１２Ｄの２つのコイルの境界部分を跨がっている状態（図６のＣ部）では両方のＬＥＤＤ１，Ｄ２が消灯する。さらに、受電用コイル１６が第２給電用コイル１２Ｂ又は第４給電用コイル１２Ｄの何れかに重なっている状態（図６のＢ部）ではＬＥＤＤ１が点灯する。
【００６４】
ここで、第２駆動回路８Ｃ２の波形が第１駆動回路８Ｃ１の波形と同位相になると、受電用コイル１６が第２給電用コイル１２Ｂ又は第４給電用コイル１２Ｄと重なっている状態（図６のＢ部）でＬＥＤＤ２が点灯する。しかも、受電用コイル１６が給電用コイル１２Ａ〜１２Ｄの２つのコイルの境界部分を跨がっている状態（図６のＣ部）でもＬＥＤＤ２が点灯し続けることになり、ＬＥＤＤ２は給電用コイル１２Ａ〜１２Ｄ上の全ての位置で点灯する。このように、駆動回路８Ｃの位相を制御することにより、受電用コイル１６の移動を行わなくても発光手段の発光を制御することが可能となる。
【００６５】
なお、図８において、ＬＥＤＤ１，Ｄ２の動作は、点灯確認できる意味であり、実際の駆動波形ではない。また、上記動作説明では、筒状部材１５を磁性体１１に沿って移動させているが、磁性体１１を筒状部材１５に沿って移動させても同様に作用する。
【００６６】
このように、第３実施の形態では、磁性体１１の複数箇所に配線１２を巻き込んで複数の給電用コイル１２Ａ〜１２Ｄを形成し、これらの給電用コイル１２Ａ〜１２Ｄを駆動する信号の位相やオン・オフを複数の駆動回路８Ｃ１，８Ｃ２により制御している。図６の例では、磁性体１１に対し４つの配線１２により個々に独立して第１乃至第４給電用コイル１２Ａ〜１２Ｄを形成し、第１給電用コイル１２Ａと第３給電用コイル１２Ｃを第１駆動回路８Ｃ１により制御し、第２給電用コイル１２Ｂと第４給電用コイル１２Ｄを第２駆動回路８Ｃ２により制御している。これにより、磁性体１１に挿通される筒状部材１５の位置によって被給電体１７への受電状態を変化させることができる。その際、被給電体１７として異なる発光色（例えば緑色と赤色など）の発光手段を用いれば、受電状態の変化を発光手段の点灯と消灯の動作変化として認識することができる。
【００６７】
次に、本発明による電磁気的結合装置の第４実施の形態を図９および図１０に基づいて説明する。なお、第１実施の形態と同一の構成要素には同一番号を付して説明する。
【００６８】
図９は本発明による電磁気的結合装置の第４実施の形態を示す図、図１０は図９の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【００６９】
図９に示すように、第４実施の形態の電磁気的結合装置１Ｄ（１）は、電源装置２Ｄ、給電装置３Ｄ、受電装置４Ｄを備えて構成される。
【００７０】
図９に示すように、電源装置２Ｄは、更に電源５、発振回路６、分周回路７、駆動回路８Ｄを備えている。電源５は、直流電流を駆動電源として発振回路６、分周回路７、駆動回路８Ｄのそれぞれに出力している。発振回路６は、所定の周波数（例えば数十Ｈｚから数ｋＨｚ）の信号を発生して出力している。分周回路７は、発振回路６からの発振信号を分周しており、例えば数百Ｈｚから数十ｋＨｚの周波数の分周信号を発生して出力している。
【００７１】
駆動回路８Ｄは、第１実施の形態と同様に、例えば図２に示すような回路により構成される。この駆動回路８Ｄでは、分周回路７からの分周信号により交流電流の周期が決定され、後述する給電装置３Ｄの第１乃至第３給電用コイル１２Ａ，１２Ｂ，１２ｃに対し、数百Ｈｚから数十ｋＨｚの周波数で図１０に示すような電圧を印加して交流電流を供給している。
【００７２】
給電装置３Ｄは、棒状の磁性体１１と、磁性体１１の外周面に巻き込まれて固定された配線１２とを備えて構成される。図９の例において、各々独立した３本の配線１２により、磁性体１１の上方から第１給電用コイル１２Ａ、第２給電用コイル１２Ｂ、第３給電用コイル１２Ｃを形成している。
【００７３】
第１給電用コイル１２Ａは、磁性体１１の最上部に位置し、駆動回路８Ｄの一方の出力８ａから配線１２が磁性体１１の上方に引き出され、磁性体１１の下方に向かって右上がりに巻き込まれ、その先端が駆動回路８Ｄの他方の出力８ｂに接続される。第２給電用コイル１２Ｂは、第１給電用コイル１２Ａの下に位置し、駆動回路８Ｄの他方の出力８ｂから第１給電用コイル１２Ａの近傍まで引き出され、磁性体１１の下方に向かって第１給電用コイル１２Ａと同一方向の右上がりに巻き込まれ、その先端が駆動回路８Ｄの一方の出力８ａに接続される。すなわち、この第２給電用コイル１２Ｂは、駆動回路８Ｄに対して第１給電用コイル１２Ａとは逆に接続されている。第３給電用コイル１２Ｃは、第２給電用コイル１２Ｂの下に位置し、駆動回路８Ｄの一方の出力８ａから第２給電用コイル１２Ｂの近傍まで引き出され、磁性体１１の下方に向かって第１給電用コイル１２Ａと同一方向の右上がりに巻き込まれ、その先端が駆動回路８Ｄの他方の出力８ｂに接続される。
【００７４】
なお、各給電用コイル１２Ａ〜１２Ｃは、後述する受電装置４Ｄの受電用コイルと略同一長さ又は整数倍以上の長さで磁性体１１に巻き込まれるものである。図９の例では、第１給電用コイル１２Ａと第２給電用コイル１２Ｂが略同一長さで磁性体１１に巻き込まれ、第３給電用コイル１２Ｃがその略倍の長さで磁性体１１に巻き込まれている。
【００７５】
図９に示すように、受電装置４Ｄは、筒状部材１５、受電用コイル１６、被給電体１７を備えて構成される。筒状部材１５は、磁性体で構成され、給電装置３Ｄの配線１２が巻き込まれた磁性体１１に挿通可能な構成とされる。
【００７６】
図９の例において、受電用コイル１６は、各々独立した２本の巻線からなる第１受電用コイル１６Ａと第２受電用コイル１６Ｂを形成している。これら第１、第２受電用コイル１６Ａ，１６Ｂは、筒状部材１５を磁性体１１に挿通した際に、磁性体１１に巻き込まれた第１乃至第３給電用コイル１２Ａ〜１２Ｃと平行をなすように、筒状部材１５の外周面に給電用コイル１２Ａ〜１２Ｃと同一方向に巻き込まれて固定されている。図９の例では、各受電用コイル１６Ａ，１６Ｂが第１給電用コイル１２Ａと略同等又はそれより短い長さで筒状部材１５に巻き込まれている。
【００７７】
被給電体１７は、例えばＬＥＤ（発光ダイオード）や電球等の発光手段で構成される。図９の例では、被給電体１７がＬＥＤであり、Ｄ１〜Ｄ５の５つのＬＥＤで構成される。さらに説明すると、ＬＥＤＤ１，ＬＥＤＤ２は、第１受電用コイル１６Ａの始端と第２受電用コイル１６Ｂの始端との間に互いに逆方向に並列接続されている。また、ＬＥＤＤ３，Ｄ４は、第２受電用コイル１６Ｂの始端と終端との間に互いに逆方向に並列接続されている。さらに、ＬＥＤＤ５は、第１受電用コイル１６Ａの始端と第２受電用コイル１６Ｂの終端との間に対し、第２受電用コイル１６Ｂ側をアノードとして接続されている。このＬＥＤＤ５のＶＦ（直流順電圧）は、受電用コイル１６に対して同一方向に接続されたＬＥＤＤ１とＬＥＤＤ３のＶＦ（直流順電圧）よりも小さいものとなっている。
【００７８】
上記構成による電磁気的結合装置１Ｄでは、受電用コイル１６Ａ，１６Ｂが図９のＡ部に位置している状態では、第１給電用コイル１２Ａと第２給電用コイル１２Ｂを介して受電用コイル１６Ａ，１６Ｂに誘起された電圧によりＬＥＤＤ１とＬＥＤＤ４が点灯する。筒状部材１５を磁性体１１に沿って下方に移動し、受電用コイル１６Ａ，１６Ｂが図９のＣ部に位置すると、各々の受電用コイル１６Ａ，１６Ｂには逆方向の交流電流が流れる。その結果、受電用コイル１６Ａ，１６Ｂにより発生する電圧が無くなり、全てのＬＥＤＤ１〜ＬＥＤＤ５は消灯する。さらに筒状部材１５を磁性体１１に沿って下方に移動し、受電用コイル１６Ａ，１６Ｂが図９のＢ部に位置すると、受電用コイル１６Ａ，１６ＢにはＡ部の時とは逆の電圧が誘起される。これにより、ＬＥＤＤ２とＬＥＤＤ３が点灯する。そして、さらに筒状部材１５を磁性体１１に沿って下方に移動し、受電用コイル１６Ａ，１６Ｂが図９のＥ部、Ｄ部に位置すると、受電用コイル１６Ａに発生する電圧が徐々にその極性を反転し、ＬＥＤＤ５に対して電圧を印加する。そして、ＬＥＤＤ５が点灯すると、この順方向電圧により受電用コイル１６Ａ，１６Ｂからの発生電圧が抑えられるため、本来点灯すべきＬＥＤＤ３とＬＥＤＤ１は消灯する。
【００７９】
なお、図１０において、ＬＥＤＤ１〜ＬＥＤＤ５の動作は、点灯確認できる意味であり、実際の駆動波形ではない。また、上記動作説明では、筒状部材１５を磁性体１１に沿って移動させているが、磁性体１１を筒状部材１５に沿って移動させても同様に作用する。
【００８０】
また、図９の例では、第１給電用コイル１２Ａと第３給電用コイル１２Ｃの両端が駆動回路８Ｄの出力に対して同一に接続され、第２給電用コイル１２Ｂの両端が駆動回路８Ｄに対して第１給電用コイル１２Ａとは逆に接続されているが、全ての給電用コイル１２Ａ〜１２Ｃの両端を駆動回路８Ｄの出力に対して同一に接続してもよい。この場合、第１給電用コイル１２Ａと第３給電用コイル１２Ｃを同一方向に巻き込み、第２給電用コイル１２Ｂの巻き方向を第１給電用コイル１２Ａとは逆にする。
【００８１】
このように、第４実施の形態では、給電装置３Ｄの磁性体１１に巻き込まれる給電用コイル１２を３箇所に設けて各々独立した複数の回路を構成し、受電装置４Ｄの筒状部材１５に巻き込まれる受電用コイル１６を２箇所に設け、磁性体１１と筒状部材１５の相対的な移動に伴うコイル間の電位差により受電状態を変化させている。これにより、磁性体１１に挿通される筒状部材１５の位置によって被給電体１７への受電状態を変化させることができる。その際、被給電体１７として異なる発光色の発光手段、例えば図９においてＬＥＤＤ１〜ＬＥＤＤ４が緑色、ＬＥＤＤ５が赤色に発光する発光手段を用いれば、受電状態の変化を発光手段の点灯と消灯の動作変化や色変化として認識することができる。
【００８２】
以上説明した本例の電磁気的結合装置によれば、磁性体１１に給電用コイル１２が巻き込まれた給電装置３と、給電装置３の磁性体１１に挿通される筒状部材１５に受電用コイル１６が巻き込まれた受電装置４との位置関係によって受電状態を任意に変えることができる。
【００８３】
また、給電装置３の磁性体１１の両端が開放された構成なので、被給電体１７が接続される受電装置４を給電装置３の磁性体１１に対して簡単に着脱することができる。しかも、被給電体１７として発光手段を接続した場合には、給電装置３に対して発光手段が接続された受電装置４を自由に交換でき、発光手段の発光色パターンを任意に変えることができる。すなわち、単なる点灯や消灯の切り替えだけでなく、給電装置３と受電装置４との位置関係に伴う受電状態の変化により表示の自由度を向上させることができる。
【００８４】
さらに、給電装置３の磁性体１１としては、剛体に限らず、柔軟性を有するもので構成することが可能である。この場合、柔軟性を有する磁性体１１に挿通される受電装置４の筒状部材１５も磁性体１１に沿ってスムーズに移動できるように柔軟性を有するのが好ましい。これにより、直線に限らず、曲線、環状など様々な形状に自由に変形することができる。また、給電装置３の磁性体１１の一部（例えば一端部）に電源装置２を内蔵させる構成とすれば、さらに構成の簡略化を図ることができる。
【００８５】
そして、本例の電磁気的結合装置１（１Ａ〜１Ｄ）は、給電装置３と受電装置４の相対的な移動により、その位置関係によって受電状態が変化する。これにより、本例の電磁気的結合装置１において給電装置３から受電装置４を介して非接触で被給電体１７に伝達される電力エネルギーを様々なものに利用できる。
【００８６】
例えば被給電体１７として発光手段を用いれば、クリスマスツリーの電飾装置として利用することができる。また、給電装置３の磁性体１１を様々な形（例えば文字、絵など）に変形して衣類の表面に装着し、被給電体１７として発光手段を用いれば、この発光手段の各種色の組み合わせで発光する様々なデザインの衣類を提供することができる。
【００８７】
本例の装置を位置センサとして例えば水位計に用いた場合には、被給電体１７として発光手段を接続した受電装置４をフロートに取り付け、水位によってフロートが上下した際、水位を発光手段の色により認識することができる。例えば第４実施の形態において、Ｄ部の位置を異常位置と設定し、ＬＥＤＤ５の発光色を赤色とすれば、受電装置４を設けたフロートがＤ部の位置まで水位が下がったときにＬＥＤＤ５が赤色に発光するので、そのときに同時にアラーム音を出力すれば、色と音により異常を知らせることができる。
【００８８】
さらに、本例の装置を例えば剣や刀などの棒状物に採用すれば、剣や刀を振り下ろした際の力の入れ具合に応じて発光手段の色が変化する玩具を構成することができる。この他、受電装置４が受電した電力を電源駆動用信号とＯＮ／ＯＦＦ信号としてＩＣに入力し、このＩＣの駆動により液晶表示器の表示を制御することも可能である。また、受電装置４の受電用コイル１６から取り出せる電力を大きくすれば、モータ等の駆動電源としても利用可能である。
【００８９】
【発明の効果】
以上の説明で明らかなように、本発明に係る電磁気的結合装置によれば、磁性体に給電用コイルが巻き込まれた給電装置と、給電装置の磁性体に挿通される筒状部材に受電用コイルが巻き込まれた受電装置との位置関係によって受電状態を任意に変えることができる。
【００９０】
また、磁性体と筒状部材とを柔軟性を有する構成とすれば、直線に限らず、曲線、環状などの様々な形状に自由に変形することができる。
【００９１】
さらに、被給電体として発光手段を用いれば、単なる点灯や消灯の切り替えだけでなく、給電装置と受電装置との位置関係によって受電状態を変えることにより表示の自由度を向上させることができる。
【００９２】
そして、給電装置の磁性体に巻き込まれる給電用コイルを部分的にその巻き方向を逆にする構成とすれば、給電用コイルに電磁的に誘起される電圧は、巻き方向によって逆になるので、磁性体に挿通される筒状部材の位置によって被給電体への受電状態を変化させることができる。その際、被給電体として異なる発光色（例えば緑色と赤色など）の発光手段を用いれば、受電状態の変化を色の変化として認識することができる。
【００９３】
磁性体に巻き込まれる給電用コイルの配線密集度を部分的に変化させる構成とすれば、磁性体に挿通される筒状部材の位置によって被給電体への受電状態を変化させることができる。その際、被給電体として発光手段を用いれば、受電状態の変化を発光手段の点灯と消灯の動作変化として認識することができる。
【００９４】
磁性体の複数箇所に給電用コイルを巻き込み、これらの給電用コイルを駆動する信号の位相やオン・オフを複数の駆動回路により制御する構成とすれば、磁性体に挿通される筒状部材の位置によって被給電体への受電状態を変化させることができる。その際、被給電体として異なる発光色（例えば緑色と赤色など）の発光手段を用いれば、受電状態の変化を発光手段の点灯と消灯の動作変化として認識することができる。
【００９５】
磁性体に巻き込まれる給電用コイルを複数箇所に設けて各々独立した複数の回路を構成し、筒状部材に巻き込まれる受電用コイルを複数箇所に設け、磁性体と筒状部材の相対的な移動に伴うコイル間の電位差により受電状態を変化させる構成とすれば、磁性体に挿通される筒状部材の位置によって被給電体への受電状態を変化させることができる。その際、被給電体として異なる発光色の発光手段を用いれば、受電状態の変化を色の変化として認識することができる。
【図面の簡単な説明】
【図１】本発明による電磁気的結合装置の第１実施の形態を示す図である。
【図２】図１の電磁気的結合装置における駆動回路の構成図である。
【図３】図１の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【図４】本発明による電磁気的結合装置の第２実施の形態を示す図である。
【図５】図４の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【図６】本発明による電磁気的結合装置の第３実施の形態を示す図である。
【図７】図６の電磁気的結合装置における駆動回路の構成図である。
【図８】図６の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【図９】本発明による電磁気的結合装置の第４実施の形態を示す図である。
【図１０】図９の電磁気的結合装置を動作させたときの給電用コイルと受電用コイルの電圧波形を含むタイミングチャートである。
【図１１】非接触により電力を得る給電装置の概略構成を示す図である。
【符号の説明】
１（１Ａ〜１Ｄ）…電磁気的結合装置、２（２Ａ〜２Ｄ）…電源装置、３（３Ａ〜３Ｄ）…給電装置、４（４Ａ〜４Ｄ）…受電装置、８（８Ａ〜８Ｄ）…駆動回路、１１…磁性体、１２…配線、１２Ａ，１２Ｂ…給電用コイル、１５…筒状部材、１６（１６Ａ，１６Ｂ）…受電用コイル、１７…被給電体、１８…無巻線部分。[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a power supply coil through which an electric current flows is wound around a magnetic body, a cylindrical member around which the power receiving coil is wound is attached to the magnetic body, and the relative movement between the magnetic body and the cylindrical member and the power supply coil flow. The present invention relates to an electromagnetic coupling device that obtains power by electromagnetically inducing a current flowing in a power feeding coil into a power receiving coil by controlling a current, and a power feeding device and a power receiving device that constitute the electromagnetic coupling device.
[0002]
[Prior art]
Conventionally, when power is supplied from a power supply such as a home power supply or a battery, a connector or a socket is provided on a wiring connected to the power supply or the power supply circuit, and the power is supplied by making direct electrical contact with the wiring. Had been taken out. For example, when installing a lighting device using a fluorescent lamp, a light bulb, or the like, a fluorescent light, a light bulb, or the like is attached to a connector or a socket provided on the wiring, and power is supplied through the connector or the socket. . In addition, even when an electric decoration device is provided, electric power is supplied to the electric decoration via a socket or the like provided in advance on the wiring. Further, even when a sensor or the like for crime prevention is provided, power is supplied to the sensor or the like via a connector or the like provided at a predetermined position.
Prior art document information related to the invention of this application includes the following.
[0003]
[Patent Document 1]
JP-A-6-51707
[0004]
[Patent Document 2]
JP-A-2002-8407
[0005]
As described above, as a conventional method of supplying power, a method of supplying power through mechanical contact, such as a connector or a socket, has been common. However, in such a configuration, for example, when the user attempts to change the position or the number of the fluorescent lamp or the light bulb, the position or the number of the electric power to be taken out depends on the position or the number of the connector or the socket having direct contact with the wiring. Come on. For this reason, there is a problem that a large design change or construction is required. Moreover, in the case of a connector or a socket having direct electrical contact with the wiring, mechanical stress concentrates on the connection portion, and there is a risk of short-circuit, disconnection, and electric shock.
[0006]
[Problems to be solved by the invention]
By the way, as a countermeasure for solving the above-mentioned problem, a power supply device for supplying electric power in a non-contact manner using magnetism has been proposed.
[0007]
FIG. 11 shows a schematic configuration of the power supply device proposed above. The power supply device 51 illustrated in FIG. 11 includes a power supply device 52 and a power distribution device 53.
[0008]
The power supply device 52 includes a power supply 54, an oscillation circuit 55, a frequency dividing circuit 56, and a driving circuit 57. The power supply 54 outputs a DC current as a drive power supply to each of the oscillation circuit 55, the frequency divider 56, and the drive circuit 57. The oscillation circuit 55 generates and outputs an oscillation signal of a predetermined frequency. The frequency dividing circuit 56 divides the signal output from the oscillation circuit 55 to a desired frequency and outputs a frequency-divided signal. The drive circuit 57 outputs an alternating current by switching the frequency-divided signal output from the frequency-divider circuit 56 in a positive / negative direction at a predetermined cycle.
[0009]
The power distribution device 53 includes a wiring 58, a power distribution unit 59, and a power-supplied body 60. The wiring 58 is formed in a ring shape, and carries an alternating current electromagnetically induced and output from the driving circuit 57 of the power supply device 52. The power distribution means 59 is provided in the vicinity of the wiring 58, and performs power distribution by causing a bidirectional current electromagnetically induced by an alternating current flowing through the wiring 58 to flow through a copper wire wound around a magnetic body. The power-supplied body 60 is connected to the winding of the power distribution means 59 and is driven by a bidirectional current flowing through the winding.
[0010]
In the power supply device 51 having the above configuration, the oscillation circuit 55 is driven by the power supply 54 to generate a signal of a predetermined frequency. The signal generated by the oscillation circuit 55 is input to the frequency dividing circuit 56. The frequency divider 56 outputs to the drive circuit 57 a frequency-divided signal for dividing the input signal to a desired frequency and a switching signal for switching between the positive and negative directions. The drive circuit 57 outputs an alternating current by switching a signal of a desired cycle in a positive / negative direction at a fixed cycle based on the input frequency-divided signal and the switching signal. The alternating current output from the drive circuit 57 flows through the wiring 58. The alternating current flowing through the wiring 58 is electromagnetically induced in a magnetic winding of the power distribution means 59. As a result, a bidirectional current flows through the magnetic winding of the power distribution means 59. Then, this bidirectional current is supplied as power to the power-supplied body 60 connected to both ends of the winding of the power distribution means 59.
[0011]
However, in the above-described power supply device 51 shown in FIG. 11, the annular wiring 58 for passing the alternating current from the drive circuit 57 and the winding of the power distribution means 59 are magnetically coupled. The power receiving state of the power distribution means 59 is the same at any position of the power distribution means 59, and the power receiving state cannot be changed according to the position of the power distribution means 59 on the wiring 58. Accordingly, when a light-emitting element is used as the power-supplied body 60 of the power supply device 51 of this type and used as an electric decoration device, only turning on / off by turning on / off the current to the light-emitting means can be performed, and the display of the display can be performed. There is a problem that the degree of freedom is low.
[0012]
Therefore, the present invention has been made in view of the above problems, and can change a power receiving state. When a light emitting unit is used as a power-supplied body, the change in the power receiving state is recognized as a color change. It is an object of the present invention to provide an electromagnetic coupling device capable of performing the following.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the present invention provides a power supply device in which a power supply coil through which a current flows is wound around an electromagnetically opened magnetic body, and a power supply device that supplies an AC current to the power supply coil. And a power receiving device in which a power receiving coil is wound around the cylindrical member, and a power receiving body is connected to the power receiving coil, and electromagnetically induces a current flowing through the power feeding coil in the power receiving coil. An electromagnetic coupling device for obtaining electric power,
The cylindrical member is relatively movably attached to the magnetic body, and a winding direction of the power supply coil is partially reversed.
[0014]
According to a second aspect of the present invention, there is provided a power supply device in which a power supply coil through which an electric current flows is wound around an electromagnetically opened magnetic body, a power supply device that supplies an alternating current to the power supply coil, and a power receiving device that receives a cylindrical member. Power receiving device in which a power supply coil is wound and a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing in the power feeding coil to the power receiving coil to obtain power. And
The cylindrical member is relatively movably attached to the magnetic body, and the density of the power supply coil is partially changed.
[0015]
According to a third aspect of the present invention, there is provided a power supply device in which a power supply coil through which an electric current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an alternating current to the power supply coil, and a power receiving device that receives a cylindrical member. Power receiving device in which a power supply coil is wound and a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing in the power feeding coil to the power receiving coil to obtain power. And
The tubular member is relatively movably attached to the magnetic body, the power supply coil is provided at a plurality of locations of the magnetic body,
A driving circuit for controlling at least one of a phase of the signal for driving the power feeding coil and ON / OFF of the signal is provided.
[0016]
According to a fourth aspect of the present invention, there is provided a power supply device in which a power supply coil through which an electric current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an alternating current to the power supply coil, and a power receiving device that receives a cylindrical member. Power receiving device in which a power supply coil is wound and a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing in the power feeding coil to the power receiving coil to obtain power. And
The tubular member is attached to the magnetic body so as to be relatively movable,
The power receiving coil is provided at a plurality of locations of the tubular member,
The power supply coil is provided at a plurality of locations of the magnetic body with the same length or an integral multiple or more of the length of the power receiving coil,
The power receiving state changes according to a potential difference between the coils accompanying the relative movement of the magnetic body and the cylindrical member.
[0017]
According to a fifth aspect of the present invention, in the electromagnetic coupling device according to any one of the first to fourth aspects, the power-supplied body is a light emitting unit.
[0018]
According to a sixth aspect of the present invention, in the electromagnetic coupling device according to any one of the first to fourth aspects, the magnetic body and the cylindrical member have flexibility.
[0019]
The invention according to claim 7 provides a power supply device in which a power supply coil through which a current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an alternating current to the power supply coil, And a power receiving device in which a power receiving coil is wound around a tubular member that is relatively movably attached to the power receiving coil, and a power receiving device is connected to the power receiving coil. A power supply device used for an electromagnetic coupling device that electromagnetically induces power to obtain electric power,
The power supply coil is wound around the magnetic body with the winding direction partially reversed.
[0020]
The invention according to claim 8 provides a power supply device in which a power supply coil through which a current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an alternating current to the power supply coil, And a power receiving device in which a power receiving coil is wound around a tubular member that is relatively movably attached to the power receiving coil, and a power receiving device is connected to the power receiving coil. A power supply device used for an electromagnetic coupling device that electromagnetically induces power to obtain electric power,
The power feeding coil is characterized in that the density is partially changed and the power feeding coil is wound around the magnetic body.
[0021]
According to the ninth aspect of the present invention, there is provided a power supply device in which a power supply coil through which a current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an alternating current to the power supply coil, And a power receiving device in which a power receiving coil is wound around a tubular member that is relatively movably attached to the power receiving coil, and a power receiving device is connected to the power receiving coil. A power supply device used for an electromagnetic coupling device that electromagnetically induces power to obtain electric power,
The power supply coil is provided at a plurality of locations on the magnetic body.
[0022]
According to a tenth aspect of the present invention, there is provided a power supply device in which a power supply coil through which a current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an alternating current to the power supply coil, and a power supply coil. A power receiving device used for an electromagnetic coupling device including a power receiving device having a power receiving coil in which a flowing current is electromagnetically induced,
The power receiving coil is wound around a tubular member, and the tubular member is provided so as to be relatively movable with respect to the magnetic body.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a diagram showing a first embodiment of an electromagnetic coupling device according to the present invention, FIG. 2 is a configuration diagram of a drive circuit in the electromagnetic coupling device of FIG. 1, and FIG. 3 operates the electromagnetic coupling device of FIG. 6 is a timing chart including voltage waveforms of the power feeding coil and the power receiving coil when the power supply coil is turned on.
[0024]
First, an electromagnetic coupling device according to a first embodiment of the present invention will be described with reference to FIGS.
[0025]
As shown in FIG. 1, the electromagnetic coupling device 1A (1) of the first embodiment includes a power supply device 2A, a power supply device 3A, and a power receiving device 4A.
[0026]
As shown in FIG. 1, the power supply device 2A further includes a power supply 5, an oscillation circuit 6, a frequency dividing circuit 7, and a driving circuit 8A. The power supply 5 outputs a DC current to each of the oscillation circuit 6, the frequency dividing circuit 7, and the driving circuit 8A as a driving power supply. The oscillation circuit 6 generates and outputs a signal of a predetermined frequency (for example, several tens Hz to several kHz). The frequency dividing circuit 7 divides the frequency of the oscillation signal from the oscillation circuit 6, and generates and outputs a frequency-divided signal having a frequency of, for example, several hundred Hz to several tens of kHz.
[0027]
The drive circuit 8A is configured by, for example, a circuit as shown in FIG. In the drive circuit 8A shown in FIG. 2, the output of the frequency divider 7 is input to the inverter NOT1. The output of the inverter NOT1 is input to the inverters NOT2 and NOT3 connected in parallel. The output of the inverter NOT2 is input to the base of the transistor Tr1, and the output of the inverter NOT3 is input to the base of the transistor Tr2. The transistors Tr1 and Tr2 are Darlington connected. Diodes D1 and D2 are connected in series between the collector of the transistor Tr1 and the emitter of the transistor Tr2 with the emitter side of the transistor Tr2 serving as the anode. Further, an output 8a drawn from a connection point P1 of the transistors Tr1 and Tr2 is connected to a wiring 12 (a first power supply coil 12A side) of a power supply device 3B described later.
[0028]
The output of the frequency divider 7 is input to the inverters NOT4 and NOT5. The output of the inverter NOT4 is input to the base of the transistor Tr3, and the output of the inverter NOT5 is input to the base of the transistor Tr4. The transistors Tr3 and Tr4 are Darlington connected. Diodes D3 and D4 are connected in series between the collector of the transistor Tr3 and the emitter of the transistor Tr4 with the emitter side of the transistor Tr4 serving as the anode. Further, an output 8b drawn from a connection point P2 of the transistors Tr3 and Tr4 is connected to a wiring 12 (on the second power supply coil 12B side) of a power supply device 3B described later.
[0029]
In this driving circuit 8A, the period of the alternating current is determined by the frequency-divided signal from the frequency-dividing circuit 7, and is applied to the first power-supplying coil 12A and the second power-supplying coil 12B of the power supply device 3A described later from several hundred Hz. An alternating current is supplied by applying a voltage as shown in FIG. 3 at a frequency of several tens of kHz.
[0030]
The power supply device 3 </ b> A includes a magnetic body 11 and a wiring 12 wound around and fixed to the outer peripheral surface of the magnetic body 11. The magnetic body 11 is configured in an electromagnetically opened state (a state in which it is not integrally formed in an annular shape). In the example of FIG. 1, the magnetic body 11 is formed of a linear rod. In the example of FIG. 1, two wires, a first power supply coil 12 </ b> A and a second power supply coil 12 </ b> B, are formed by one wiring 12. More specifically, the wiring 12 is drawn upward from below the magnetic body 11 from one output 8 a of the drive circuit 8. The wiring 12 pulled out above the magnetic body 12 is wound upward to the right toward the center of the magnetic body 12 to form a first power supply coil 12A having a predetermined length (part A in FIG. 1). . The wiring 12 on which the first power supply coil 12A is formed is wound in the opposite direction from the position of the substantially central portion of the magnetic body 11, that is, sloping downward and to the right, and has a second power supply length substantially equal to that of the first power supply coil. The coil 12B is formed (part B in FIG. 1). The wiring 12 extended to below the magnetic body 11 is connected to the other output 8 b of the drive circuit 8.
[0031]
As illustrated in FIG. 1, the power receiving device 4 </ b> A includes a tubular member 15, a power receiving coil 16, and a power-supplied body 17. The cylindrical member 15 is made of a magnetic material, and is configured to be insertable into the magnetic material 11 in which the wiring 12 of the power supply device 3A is entangled.
[0032]
The power receiving coil 16 is formed on the outer peripheral surface of the tubular member 15 so as to be substantially parallel to the first power feeding coil 12A wound around the magnetic body 11 when the tubular member 15 is inserted through the magnetic body 11. It is wound and fixed in the same direction as one power supply coil 12A. The power receiving coil 16 is wound around the tubular member 15 with a length substantially equal to that of the power feeding coils 12A and 12B.
[0033]
The power-supplied body 17 is configured by a light-emitting unit such as an LED (light-emitting diode) or a light bulb. In the example of FIG. 1, the power receiving body 17 is an LED, and two LEDs D <b> 1 and D <b> 2 are connected to opposite ends of the power receiving coil 16 in opposite directions.
[0034]
In the electromagnetic coupling device 1A having the above configuration, the tubular member 15 of the power receiving device 4A is inserted into and attached to the magnetic body 11 of the power feeding device 3A. Then, in a state where the power receiving coil 16 to which the LEDs D1 and D2 are attached overlaps the first power feeding coil 12A of the magnetic body 11 (part A in FIG. 1), a voltage as shown in FIG. Electromagnetically induced in the power receiving coil 16 via the one power feeding coil 12A, the LEDs D2 connected to both ends of the power receiving coil 16 are turned on. Then, when the tubular member 15 of the power receiving device 4A is moved downward along the magnetic body 11 of the power feeding device 3A, and the power receiving coil 16 overlaps with the second power feeding coil 12B (part B in FIG. 1), The direction of the voltage induced in the power receiving coil 16 changes as shown in FIG. Thereby, LEDD2 is turned off and LEDD1 is turned on. In this way, by reversing the winding direction of the power supply coils 12A and 12B wound around the magnetic body 11 of the power supply device 3A, the light emission of the LEDs D1 and D2 connected to both ends of the power reception coil 16 is switched.
[0035]
In FIG. 3, the operations of the LEDs D1 and D2 mean that the lighting can be confirmed, and are not actual driving waveforms. Further, in the above description of the operation, the cylindrical member 15 is moved along the magnetic member 11, but the same effect can be obtained by moving the magnetic member 11 along the cylindrical member 15. That is, the light emission of the two LEDs D1 and D2 connected to the power receiving coil 16 can be switched by the relative movement of the magnetic body 11 and the cylindrical member 15.
[0036]
As described above, in the first embodiment, the power supply coils 12A and 12B are formed by partially reversing the winding direction of the wiring 12 wound around the magnetic body 11 of the power supply device 3A. As a result, the voltage electromagnetically induced in the power supply coils 12A and 12B from the drive circuit 8A is reversed between the first power supply coil 12A and the second power supply coil 12B, so that the voltage is inserted into the magnetic body 11. The power receiving state to the power-supplied body 17 can be changed depending on the position of the tubular member 15. At this time, if light-emitting means of different light-emitting colors (for example, green and red) are used as the power-supplied body 17, a change in the power receiving state can be recognized as a color change.
[0037]
Next, a second embodiment of the electromagnetic coupling device according to the present invention will be described with reference to FIGS. The same components as those in the first embodiment will be described with the same reference numerals.
[0038]
FIG. 4 is a diagram showing a second embodiment of the electromagnetic coupling device according to the present invention, and FIG. 5 is a timing chart including voltage waveforms of the power feeding coil and the power receiving coil when the electromagnetic coupling device of FIG. 4 is operated. It is.
[0039]
As shown in FIG. 4, the electromagnetic coupling device 1B (1) according to the second embodiment includes a power supply device 2B, a power supply device 3B, and a power receiving device 4B.
[0040]
As shown in FIG. 4, the power supply device 2B further includes a power supply 5, an oscillation circuit 6, a frequency dividing circuit 7, and a driving circuit 8B. The power supply 5 outputs a DC current to each of the oscillation circuit 6, the frequency dividing circuit 7, and the driving circuit 8B as a driving power supply. The oscillation circuit 6 generates and outputs a signal of a predetermined frequency (for example, several tens Hz to several kHz). The frequency dividing circuit 7 divides the frequency of the oscillation signal from the oscillation circuit 6, and generates and outputs a frequency-divided signal having a frequency of, for example, several hundred Hz to several tens of kHz.
[0041]
The drive circuit 8B is configured by a circuit as shown in FIG. 2, for example, as in the first embodiment. In this driving circuit 8B, the period of the alternating current is determined by the frequency-divided signal from the frequency-dividing circuit 7, and is applied to the first power-supplying coil 12A and the second power-supplying coil 12B of the power supply device 3B described later from several hundred Hz. An alternating current is supplied by applying a voltage as shown in FIG. 5 at a frequency of several tens of kHz.
[0042]
The power supply device 3 </ b> B includes a rod-shaped magnetic body 11 and a wiring 12 wound around and fixed to the outer peripheral surface of the magnetic body 11. Further, in the example of FIG. 4, the first power supply coil 12 </ b> A and the second power supply coil 12 </ b> B are formed by one wire 12. More specifically, the wiring 12 is drawn upward from below the magnetic body 11 from one output 8a of the drive circuit 8B. The wiring 12 pulled out above the magnetic body 11 is wound upward and rightward toward the center of the magnetic body 11 to form a first power supply coil 12A having a predetermined length (part A in FIG. 4). . The wiring 12 on which the first power supply coil 12A is formed is formed by forming a non-winding portion 18 (part C in FIG. 4) in which the winding 12 is not partially wound below the first power supply coil 12A. Is wound upward to the right in the same direction as the first power supply coil 12A to form a second power supply coil 12B having substantially the same length as the first power supply coil 12A (part B in FIG. 4). ). The wiring 12 extended to below the magnetic body 11 is connected to the other output 8b of the drive circuit 8B.
[0043]
As shown in FIG. 4, the power receiving device 4 </ b> B includes a tubular member 15, a power receiving coil 16, and a power-supplied body 17. The cylindrical member 15 is made of a magnetic material, and is configured to be insertable into the magnetic material 11 in which the wiring 12 of the power supply device 3A is entangled.
[0044]
The power receiving coil 16 is configured such that, when the cylindrical member 15 is inserted through the magnetic body 11, the outer peripheral surface of the cylindrical member 15 is substantially parallel to the two power feeding coils 12 </ b> A and 12 </ b> B wound around the magnetic body 11. Are wound and fixed in the same direction as the power supply coils 12A and 12B. The power receiving coil 16 is wound around the tubular member 15 with a length substantially equal to that of the power feeding coils 12A and 12B.
[0045]
The power-supplied body 17 is configured by a light-emitting unit such as an LED (light-emitting diode) or a light bulb. In the example of FIG. 4, the power receiving body 17 is an LED, and two LEDs D1 and D2 are connected to both ends of the power receiving coil 16 in the same direction.
[0046]
In the electromagnetic coupling device 1B having the above configuration, the tubular member 15 of the power receiving device 4B is inserted into and attached to the magnetic body 11 of the power feeding device 3B. Then, in a state where the power receiving coil 16 to which the LEDs D1 and D2 are attached is overlapped with the first power feeding coil 12A of the magnetic body 11 (part A in FIG. 4), the voltage as shown in FIG. Electromagnetically induced in the power receiving coil 16 via 12A, the LEDs D1 and D2 are both turned on. Then, when the tubular member 15 of the power receiving device 4B is moved downward along the magnetic body 11 of the power feeding device 3B and the power receiving coil 16 is located at the non-winding portion 18, the voltage induced in the power receiving coil 16 is reduced. As shown in FIG. 5, the LEDs D1 and D2 are both turned off. Then, when the cylindrical member 15 of the power receiving device 4B is further moved downward along the magnetic body 11 of the power feeding device 3B, and the power receiving coil 16 overlaps with the second power feeding coil 12B (part B in FIG. 4). A voltage as shown in FIG. 5 is induced in the power receiving coil 16 via the second power feeding coil 12B, and the LEDs D1 and D2 are turned on again. Thus, by providing the non-winding portion 18 between the power supply coils 12A and 12B wound around the magnetic body 11 of the power supply device 3B, the light emission of the LEDs D1 and D2 connected to both ends of the power reception coil 16 is turned on.・ Changes to off / on.
[0047]
In FIG. 5, the operations of the LEDs D1 and D2 mean that the lighting can be confirmed, and are not actual driving waveforms. Further, in the above description of the operation, the cylindrical member 15 is moved along the magnetic member 11, but the same effect can be obtained by moving the magnetic member 11 along the cylindrical member 15.
[0048]
As described above, in the second embodiment, the wiring density of the wiring 12 wound around the magnetic body 11 is partially changed. In the example of FIG. 4, the non-winding portion 18 is formed between the first power supply coil 12A and the second power supply coil 12B formed by the wiring 12. Thereby, the power receiving state to the power-supplied body 17 can be changed depending on the position of the cylindrical member 15 inserted into the magnetic body 11. At this time, if a light emitting unit is used as the power receiving body 17, a change in the power receiving state can be recognized as a change in the operation of turning on and off the light emitting unit.
[0049]
Next, a third embodiment of the electromagnetic coupling device according to the present invention will be described with reference to FIGS. The same components as those in the first embodiment will be described with the same reference numerals.
[0050]
6 is a diagram showing a third embodiment of the electromagnetic coupling device according to the present invention, FIG. 7 is a configuration diagram of a drive circuit in the electromagnetic coupling device of FIG. 6, and FIG. 8 operates the electromagnetic coupling device of FIG. 6 is a timing chart including voltage waveforms of the power feeding coil and the power receiving coil when the power supply coil is turned on.
[0051]
As shown in FIG. 6, the electromagnetic coupling device 1C (1) of the third embodiment includes a power supply device 2C, a power supply device 3C, and a power reception device 4C.
[0052]
As shown in FIG. 6, the power supply device 2C further includes a power supply 5, an oscillation circuit 6, a frequency dividing circuit 7, and a driving circuit 8C. The power supply 5 outputs a DC current to each of the oscillation circuit 6, the frequency dividing circuit 7, and the driving circuit 8C as a driving power supply. The oscillation circuit 6 generates and outputs a signal of a predetermined frequency (for example, several tens Hz to several kHz). The frequency dividing circuit 7 divides the frequency of the oscillation signal from the oscillation circuit 6, and generates and outputs a frequency-divided signal having a frequency of several hundred Hz to several kHz, for example.
[0053]
The drive circuit 8C includes a first drive circuit 8C1 and a second drive circuit 8C2, as shown in FIG. 6, and outputs an AC current based on the frequency-divided signal output from the frequency-divider circuit 7. More specifically, the drive circuit 8C is configured by, for example, a circuit as shown in FIG. In FIG. 7, in the first drive circuit 8C1, the output of the frequency divider 7 is input to the inverter NOT1. The output of the inverter NOT1 is input to the inverters NOT2 and NOT3 connected in parallel. The output of the inverter NOT2 is input to the base of the transistor Tr1, and the output of the inverter NOT3 is input to the base of the transistor Tr2. The transistors Tr1 and Tr2 are Darlington connected. Diodes D1 and D2 are connected in series between the collector of the transistor Tr1 and the emitter of the transistor Tr2 with the emitter side of the transistor Tr2 serving as the anode. Further, a connection point P1 of the transistors Tr1 and Tr2 is connected to a first power supply coil 12A of a power supply device 3C described later.
[0054]
The output of the frequency divider 7 is input to the inverters NOT4 and NOT5. The output of the inverter NOT4 is input to the base of the transistor Tr3, and the output of the inverter NOT5 is input to the base of the transistor Tr4. The transistors Tr3 and Tr4 are Darlington connected. Diodes D3 and D4 are connected in series between the collector of the transistor Tr3 and the emitter of the transistor Tr4 with the emitter side of the transistor Tr4 serving as the anode. Further, a connection point P2 between the transistors Tr3 and Tr4 is connected to a third power supply coil 12C of a power supply device 3C described later.
[0055]
In the second drive circuit 8C2, the output of the inverter NOT1 of the first drive circuit 8C1 is input to the inverters NOT6 and NOT7 connected in parallel. The output of the inverter NOT6 is input to the base of the transistor Tr5, and the output of the inverter NOT7 is input to the base of the transistor Tr6. The transistors Tr5 and Tr6 are Darlington connected. Diodes D5 and D6 are connected in series between the collector of the transistor Tr5 and the emitter of the transistor Tr6, using the emitter side of the transistor Tr6 as the anode. Further, a connection point P3 between the transistors Tr5 and Tr6 is connected to a second power supply coil 12B of a power supply device 3C described later.
[0056]
The output of the frequency dividing circuit 7 is input to the inverters NOT8 and NOT9. The output of the inverter NOT8 is input to the base of the transistor Tr7, and the output of the inverter NOT9 is input to the base of the transistor Tr8. The transistors Tr7 and Tr8 are Darlington connected. Diodes D7 and D8 are connected in series between the collector of the transistor Tr7 and the emitter of the transistor Tr8 with the emitter side of the transistor Tr8 serving as the anode. Further, a connection point P4 between the transistors Tr7 and Tr8 is connected to a fourth power supply coil 12D of a power supply device 3C described later.
[0057]
In these first and second driving circuits 8C1 and 8C2, the period of the alternating current is determined by the frequency-divided signal from the frequency-dividing circuit 7. Then, the first drive circuit 8C1 applies a voltage as shown in FIG. 8 to the first power supply coil 12A and the third power supply coil 12C of the power supply device 3C described later at a frequency of several hundred Hz to several tens of kHz. To supply alternating current. Further, the second drive circuit 8C2 applies a voltage as shown in FIG. 8 to the second power supply coil 12B and the fourth power supply coil 12D of the power supply device 3C described later at a frequency of several hundred Hz to several tens of kHz. To supply alternating current.
[0058]
The power supply device 3 </ b> C includes a rod-shaped magnetic body 11 and a wiring 12 wound around and fixed to the outer peripheral surface of the magnetic body 11. In the example of FIG. 6, the first power supply coil 12A, the second power supply coil 12B, the third power supply coil 12C, and the fourth power supply coil 12D are arranged from above the magnetic body 11 by four independent wires 12. Has formed.
[0059]
The first power supply coil 12 </ b> A is located at the uppermost part of the magnetic body 11, and the wiring 12 is drawn out above the magnetic body 11 from one output 8 a 1 of the first drive circuit 8 </ b> C <b> 1. The leading end is connected to the other output 8b1 of the first drive circuit 8C1. The second power supply coil 12B is located below the first power supply coil 12A, is pulled out from one output 8a2 of the second drive circuit 8C2 to the vicinity of the first power supply coil 12A, and is directed downward of the magnetic body 11. The coil is wound up and to the right in the same direction as the first power supply coil 12A, and its tip is connected to the other output 8b2 of the second drive circuit 8C2. The third power supply coil 12C is located below the second power supply coil 12B, is drawn out from one output 8a1 of the first drive circuit 8C1 to the vicinity of the second power supply coil 12B, and is directed below the magnetic body 11. As a result, it is wound upward and to the right in the same direction as the first power supply coil 12A, and its tip is connected to the other output 8b1 of the first drive circuit 8C1. The fourth power supply coil 12D is located below the third power supply coil 12C, is pulled out from one output 8a2 of the second drive circuit 8C2 to the vicinity of the third power supply coil 12C, and is directed below the magnetic body 11. The coil is wound up and to the right in the same direction as the first power supply coil 12A, and its tip is connected to the other output 8b2 of the second drive circuit 8C2. Each of the power supply coils 12A to 12D is wound around the magnetic body 11 with substantially the same length.
[0060]
As shown in FIG. 6, the power receiving device 4 </ b> C includes a tubular member 15, a power receiving coil 16, and a power-supplied body 17. The cylindrical member 15 is made of a magnetic material, and is configured to be able to be inserted into the magnetic material 11 in which the wiring 12 of the power supply device 3C is wound.
[0061]
The power receiving coil 16 is configured such that, when the cylindrical member 15 is inserted through the magnetic body 11, the cylindrical member 15 is parallel to the first to fourth power supply coils 12 </ b> A to 12 </ b> D wound around the magnetic body 11. Are wound around and fixed in the same direction as the power supply coils 12A to 12D. The power receiving coil 16 is wound around the tubular member 15 with a length substantially equal to that of the power feeding coils 12A to 12D.
[0062]
The power-supplied body 17 is configured by a light-emitting unit such as an LED (light-emitting diode) or a light bulb. In the example of FIG. 6, the power receiving body 17 is an LED, and two LEDs D <b> 1 and D <b> 2 are connected to both ends of the power receiving coil 17 in opposite directions.
[0063]
In the electromagnetic coupling device 1C having the above configuration, the tubular member 15 of the power receiving device 4C is inserted and attached to the magnetic body 11 of the power feeding device 3C. Then, the state in which the power receiving coil 16 to which the LEDs D1 and D2 are attached overlaps with the first power supply coil 12A of the magnetic body 11 (part A in FIG. 6) and the state in which it overlaps with the second power supply coil 12B (B in FIG. 6). When the phase of each of the drive circuits 8C1 and 8C2 is reversed, the direction of the voltage induced in the power receiving coil 16 changes as shown in FIG. As a result, the LED D2 is lit in a state where the power receiving coil 16 overlaps with either the first power feeding coil 12A or the third power feeding coil 12C (part A in FIG. 6). In a state where the power receiving coil 16 straddles the boundary between the two coils of the power feeding coils 12A to 12D (part C in FIG. 6), both LEDs D1 and D2 are turned off. Further, when the power receiving coil 16 overlaps with either the second power feeding coil 12B or the fourth power feeding coil 12D (part B in FIG. 6), the LED D1 is turned on.
[0064]
Here, when the waveform of the second drive circuit 8C2 has the same phase as the waveform of the first drive circuit 8C1, the state in which the power receiving coil 16 overlaps the second power feeding coil 12B or the fourth power feeding coil 12D (FIG. 6) The LEDD2 is turned on at (B section). Moreover, even in a state where the power receiving coil 16 straddles the boundary between the two power feeding coils 12A to 12D (part C in FIG. 6), the LEDD2 continues to be lit, and the LEDD2 is turned on by the power feeding coil 12A. Lights up in all positions on １２12D. As described above, by controlling the phase of the driving circuit 8C, it is possible to control the light emission of the light emitting means without moving the power receiving coil 16.
[0065]
In FIG. 8, the operations of the LEDs D1 and D2 mean that the lighting can be confirmed, and are not actual driving waveforms. Further, in the above description of the operation, the cylindrical member 15 is moved along the magnetic member 11, but the same effect can be obtained by moving the magnetic member 11 along the cylindrical member 15.
[0066]
As described above, in the third embodiment, the wiring 12 is wound around a plurality of portions of the magnetic body 11 to form a plurality of power supply coils 12A to 12D, and the phase of a signal for driving these power supply coils 12A to 12D is determined. ON / OFF is controlled by a plurality of drive circuits 8C1 and 8C2. In the example of FIG. 6, the first to fourth power supply coils 12A to 12D are formed independently of the magnetic body 11 by the four wirings 12, and the first power supply coil 12A and the third power supply coil 12C are formed. The second power supply coil 12B and the fourth power supply coil 12D are controlled by the second drive circuit 8C2, while being controlled by the first drive circuit 8C1. Thereby, the power receiving state to the power-supplied body 17 can be changed depending on the position of the cylindrical member 15 inserted into the magnetic body 11. At this time, if light-emitting means of different light-emitting colors (for example, green and red) are used as the power-supplied body 17, a change in the power receiving state can be recognized as a change in the operation of turning on and off the light-emitting means.
[0067]
Next, a fourth embodiment of the electromagnetic coupling device according to the present invention will be described with reference to FIGS. The same components as those in the first embodiment will be described with the same reference numerals.
[0068]
FIG. 9 is a diagram showing a fourth embodiment of the electromagnetic coupling device according to the present invention, and FIG. 10 is a timing chart including voltage waveforms of the power feeding coil and the power receiving coil when the electromagnetic coupling device of FIG. 9 is operated. It is.
[0069]
As shown in FIG. 9, the electromagnetic coupling device 1D (1) according to the fourth embodiment includes a power supply device 2D, a power supply device 3D, and a power reception device 4D.
[0070]
As shown in FIG. 9, the power supply device 2D further includes a power supply 5, an oscillation circuit 6, a frequency dividing circuit 7, and a driving circuit 8D. The power supply 5 outputs a DC current to each of the oscillation circuit 6, the frequency dividing circuit 7, and the driving circuit 8D as a driving power supply. The oscillation circuit 6 generates and outputs a signal of a predetermined frequency (for example, several tens Hz to several kHz). The frequency dividing circuit 7 divides the frequency of the oscillation signal from the oscillation circuit 6, and generates and outputs a frequency-divided signal having a frequency of, for example, several hundred Hz to several tens of kHz.
[0071]
The drive circuit 8D is configured by a circuit as shown in FIG. 2, for example, as in the first embodiment. In this driving circuit 8D, the period of the alternating current is determined by the frequency-divided signal from the frequency-dividing circuit 7, and is applied to the first to third power-supply coils 12A, 12B, and 12c of the power-supplying device 3D described later from several hundred Hz. An alternating current is supplied by applying a voltage as shown in FIG. 10 at a frequency of several tens of kHz.
[0072]
The power supply device 3 </ b> D includes a bar-shaped magnetic body 11 and a wiring 12 wound around and fixed to the outer peripheral surface of the magnetic body 11. In the example of FIG. 9, a first power supply coil 12 </ b> A, a second power supply coil 12 </ b> B, and a third power supply coil 12 </ b> C are formed from above the magnetic body 11 by three independent wires 12.
[0073]
The first power supply coil 12 </ b> A is located at the uppermost part of the magnetic body 11, and the wiring 12 is pulled out from the one output 8 a of the drive circuit 8 </ b> D above the magnetic body 11, and rises to the right below the magnetic body 11. It is caught and its tip is connected to the other output 8b of the drive circuit 8D. The second power supply coil 12B is located below the first power supply coil 12A, is pulled out from the other output 8b of the drive circuit 8D to the vicinity of the first power supply coil 12A, and extends downward from the magnetic body 11. One coil 12A is wound up and to the right in the same direction as the power supply coil 12A, and its tip is connected to one output 8a of the drive circuit 8D. That is, the second power supply coil 12B is connected to the drive circuit 8D in a reverse manner to the first power supply coil 12A. The third power supply coil 12C is located below the second power supply coil 12B, is pulled out from one output 8a of the drive circuit 8D to the vicinity of the second power supply coil 12B, and extends downward from the magnetic body 11. One coil 12A is wound up and to the right in the same direction as the power supply coil 12A, and its tip is connected to the other output 8b of the drive circuit 8D.
[0074]
Each of the power supply coils 12A to 12C is wound around the magnetic body 11 with substantially the same length as the power receiving coil of the power receiving device 4D described later or a length that is an integral multiple or more. In the example of FIG. 9, the first power supply coil 12A and the second power supply coil 12B are wound around the magnetic body 11 with substantially the same length, and the third power supply coil 12C is wound around the magnetic body 11 with a length almost double that length. I'm caught.
[0075]
As illustrated in FIG. 9, the power receiving device 4D includes a tubular member 15, a power receiving coil 16, and a power-supplied body 17. The cylindrical member 15 is made of a magnetic material, and is configured to be insertable into the magnetic material 11 in which the wiring 12 of the power supply device 3D is wound.
[0076]
In the example of FIG. 9, the power receiving coil 16 forms a first power receiving coil 16A and a second power receiving coil 16B each including two independent windings. These first and second power receiving coils 16A and 16B are parallel to the first to third power feeding coils 12A to 12C wound around the magnetic body 11 when the cylindrical member 15 is inserted through the magnetic body 11. In this manner, the power supply coils 12A to 12C are wound around and fixed to the outer peripheral surface of the tubular member 15 in the same direction. In the example of FIG. 9, each of the power receiving coils 16A and 16B is wound around the tubular member 15 with a length substantially equal to or shorter than the first power feeding coil 12A.
[0077]
The power-supplied body 17 is configured by a light-emitting unit such as an LED (light-emitting diode) or a light bulb. In the example of FIG. 9, the power-supplied body 17 is an LED, and includes five LEDs D1 to D5. More specifically, the LEDD1 and the LEDD2 are connected in parallel in opposite directions between the starting end of the first power receiving coil 16A and the starting end of the second power receiving coil 16B. The LEDs D3 and D4 are connected in parallel in opposite directions between the start and end of the second power receiving coil 16B. Further, the LED D5 is connected between the start end of the first power receiving coil 16A and the end of the second power receiving coil 16B with the second power receiving coil 16B side as an anode. The VF (DC forward voltage) of the LED D5 is smaller than the VF (DC forward voltage) of the LEDs D1 and LEDD3 connected to the power receiving coil 16 in the same direction.
[0078]
In the electromagnetic coupling device 1D having the above-described configuration, when the power receiving coils 16A and 16B are located at the portion A in FIG. 9, the power receiving coil 16A is connected via the first power feeding coil 12A and the second power feeding coil 12B. , 16B turn on LEDD1 and LEDD4. When the cylindrical member 15 is moved downward along the magnetic body 11 and the power receiving coils 16A and 16B are located at the portion C in FIG. 9, alternating current flows in the power receiving coils 16A and 16B in the opposite directions. As a result, the voltage generated by the power receiving coils 16A and 16B disappears, and all the LEDs D1 to LEDD5 are turned off. Further, when the cylindrical member 15 is moved downward along the magnetic body 11 and the power receiving coils 16A and 16B are located at the portion B in FIG. 9, the voltage applied to the power receiving coils 16A and 16B is opposite to that at the time of the portion A. Is induced. Thereby, LEDD2 and LEDD3 are turned on. Then, the cylindrical member 15 is further moved downward along the magnetic body 11, and when the power receiving coils 16A and 16B are positioned at portions E and D in FIG. 9, the voltage generated in the power receiving coil 16A gradually increases. The polarity is inverted, and a voltage is applied to the LED D5. When the LED D5 is turned on, the voltage generated from the power receiving coils 16A and 16B is suppressed by the forward voltage, so that the LEDs D3 and LEDD1, which should be turned on, are turned off.
[0079]
In FIG. 10, the operations of the LEDs D1 to LEDD5 mean that the lighting can be confirmed, and are not actual driving waveforms. Further, in the above description of the operation, the cylindrical member 15 is moved along the magnetic member 11, but the same effect can be obtained by moving the magnetic member 11 along the cylindrical member 15.
[0080]
In the example of FIG. 9, both ends of the first power supply coil 12A and the third power supply coil 12C are connected to the output of the drive circuit 8D in the same manner, and both ends of the second power supply coil 12B are connected to the drive circuit 8D. On the other hand, it is connected in reverse to the first power supply coil 12A, but both ends of all the power supply coils 12A to 12C may be connected to the output of the drive circuit 8D in the same manner. In this case, the first power supply coil 12A and the third power supply coil 12C are wound in the same direction, and the winding direction of the second power supply coil 12B is reversed from that of the first power supply coil 12A.
[0081]
As described above, in the fourth embodiment, the power supply coil 12 wound around the magnetic body 11 of the power supply device 3D is provided at three locations to configure a plurality of independent circuits, and the cylindrical member 15 of the power reception device 4D is provided. The power receiving coil 16 is provided at two locations, and the power receiving state is changed by the potential difference between the coils due to the relative movement of the magnetic body 11 and the cylindrical member 15. Thereby, the power receiving state to the power-supplied body 17 can be changed depending on the position of the cylindrical member 15 inserted into the magnetic body 11. At this time, if light-emitting means of different emission colors are used as the power-supplied body 17, for example, the light-emitting means in which LEDD1 to LEDD4 emit green light and the LEDD5 emits red light in FIG. It can be recognized as a change or a color change.
[0082]
According to the electromagnetic coupling device of the present embodiment described above, the power supply device 3 in which the power supply coil 12 is wound around the magnetic body 11, and the power receiving coil in the cylindrical member 15 inserted into the magnetic body 11 of the power supply device 3. The power receiving state can be arbitrarily changed depending on the positional relationship between the power receiving device 4 and the power receiving device 4.
[0083]
Further, since both ends of the magnetic body 11 of the power supply device 3 are open, the power receiving device 4 to which the power-supplied body 17 is connected can be easily attached to and detached from the magnetic body 11 of the power supply device 3. In addition, when a light emitting unit is connected as the power receiving body 17, the power receiving device 4 to which the light emitting unit is connected can be freely replaced with the power supply device 3, and the emission color pattern of the light emitting unit can be changed arbitrarily. . That is, the degree of freedom of display can be improved not only by simply switching on and off, but also by a change in the power receiving state according to the positional relationship between the power supply device 3 and the power receiving device 4.
[0084]
Further, the magnetic body 11 of the power supply device 3 is not limited to a rigid body, and can be configured with a flexible material. In this case, it is preferable that the cylindrical member 15 of the power receiving device 4 inserted into the flexible magnetic body 11 also has flexibility so that it can move smoothly along the magnetic body 11. Thereby, it is possible to freely deform not only a straight line but also various shapes such as a curved line and an annular shape. If the power supply device 2 is built in a part (for example, one end) of the magnetic body 11 of the power supply device 3, the configuration can be further simplified.
[0085]
Then, in the electromagnetic coupling device 1 (1A to 1D) of the present example, the power receiving state changes depending on the positional relationship due to the relative movement of the power supply device 3 and the power receiving device 4. Thus, in the electromagnetic coupling device 1 of the present example, the power energy transmitted from the power supply device 3 to the power-supplied body 17 through the power receiving device 4 in a non-contact manner can be used for various things.
[0086]
For example, if a light emitting unit is used as the power receiving body 17, it can be used as a Christmas tree illumination device. Also, if the magnetic body 11 of the power supply device 3 is deformed into various shapes (for example, characters, pictures, etc.) and mounted on the surface of clothing, and a light-emitting means is used as the power-supplied body 17, a combination of various colors of the light-emitting means can be obtained. The present invention can provide clothing of various designs that emit light.
[0087]
When the device of this example is used as a position sensor in, for example, a water level meter, the power receiving device 4 connected to the light emitting means as the power receiving body 17 is attached to the float, and when the float moves up and down depending on the water level, the water level is changed to the color of the light emitting means Can be recognized. For example, in the fourth embodiment, if the position of the portion D is set as an abnormal position and the emission color of the LED D5 is red, the LED D5 is turned off when the water level of the float provided with the power receiving device 4 drops to the position of the portion D. Since it emits red light, if an alarm sound is output at the same time, abnormality can be notified by color and sound.
[0088]
Furthermore, if the device of this example is adopted for a bar-shaped object such as a sword or a sword, it is possible to configure a toy in which the color of the light emitting means changes according to the degree of force applied when the sword or the sword is swung down. . In addition, it is also possible to input the power received by the power receiving apparatus 4 to the IC as a power supply driving signal and an ON / OFF signal, and control the display of the liquid crystal display by driving the IC. Further, if the power that can be extracted from the power receiving coil 16 of the power receiving device 4 is increased, it can be used as a drive power source for a motor or the like.
[0089]
【The invention's effect】
As is apparent from the above description, according to the electromagnetic coupling device of the present invention, the power feeding device in which the power feeding coil is wound around the magnetic material, and the power receiving device having the cylindrical member inserted into the magnetic material of the power feeding device. The power receiving state can be arbitrarily changed depending on the positional relationship with the power receiving device in which the coil is wound.
[0090]
In addition, if the magnetic body and the cylindrical member are configured to have flexibility, the magnetic body and the cylindrical member can be freely deformed into various shapes such as a curved line, an annular line, and the like.
[0091]
Furthermore, if the light emitting means is used as the power receiving body, the degree of freedom of display can be improved by changing the power receiving state depending on the positional relationship between the power feeding device and the power receiving device, as well as simply switching on and off.
[0092]
If the power supply coil wound around the magnetic body of the power supply device is configured to partially reverse the winding direction, the voltage electromagnetically induced in the power supply coil is reversed depending on the winding direction. The power receiving state to the power-supplied body can be changed depending on the position of the cylindrical member inserted into the magnetic body. At this time, if light-emitting means of different light-emitting colors (for example, green and red) are used as the power-supplied body, a change in the power receiving state can be recognized as a color change.
[0093]
With a configuration in which the wiring density of the power supply coil wound around the magnetic body is partially changed, the power receiving state to the power-supplied body can be changed depending on the position of the cylindrical member inserted into the magnetic body. At this time, if the light emitting unit is used as the power receiving body, the change in the power receiving state can be recognized as a change in the operation of turning on and off the light emitting unit.
[0094]
If a power supply coil is wound around a plurality of portions of the magnetic body, and a phase and an on / off of a signal for driving these power supply coils are controlled by a plurality of drive circuits, a cylindrical member inserted into the magnetic body is provided. The power receiving state to the power-supplied object can be changed depending on the position. At this time, if light-emitting means of different light-emitting colors (for example, green and red) are used as the power-supplied body, a change in the power receiving state can be recognized as a change in the operation of turning on and off the light-emitting means.
[0095]
A plurality of power supply coils wound around the magnetic body are provided at a plurality of locations to form a plurality of independent circuits, and a plurality of power receiving coils wound around the tubular member are provided at the plurality of places, so that the relative movement between the magnetic body and the tubular member is achieved. The power receiving state can be changed by the position of the cylindrical member inserted into the magnetic body if the power receiving state is changed by the potential difference between the coils accompanying the above. At this time, if light-emitting means of different light-emitting colors are used as power-supplied bodies, a change in the power receiving state can be recognized as a color change.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of an electromagnetic coupling device according to the present invention.
FIG. 2 is a configuration diagram of a drive circuit in the electromagnetic coupling device of FIG. 1;
3 is a timing chart including voltage waveforms of a power feeding coil and a power receiving coil when the electromagnetic coupling device of FIG. 1 is operated.
FIG. 4 is a diagram showing a second embodiment of the electromagnetic coupling device according to the present invention.
5 is a timing chart including voltage waveforms of a power feeding coil and a power receiving coil when the electromagnetic coupling device of FIG. 4 is operated.
FIG. 6 is a diagram showing a third embodiment of the electromagnetic coupling device according to the present invention.
7 is a configuration diagram of a drive circuit in the electromagnetic coupling device of FIG.
8 is a timing chart including voltage waveforms of a power feeding coil and a power receiving coil when the electromagnetic coupling device of FIG. 6 is operated.
FIG. 9 is a diagram showing a fourth embodiment of the electromagnetic coupling device according to the present invention.
10 is a timing chart including voltage waveforms of a power feeding coil and a power receiving coil when the electromagnetic coupling device of FIG. 9 is operated.
FIG. 11 is a diagram showing a schematic configuration of a power supply device for obtaining electric power in a non-contact manner.
[Explanation of symbols]
1 (1A to 1D): electromagnetic coupling device, 2 (2A to 2D): power supply device, 3 (3A to 3D): power supply device, 4 (4A to 4D): power receiving device, 8 (8A to 8D): drive Circuit, 11: Magnetic body, 12: Wiring, 12A, 12B: Power supply coil, 15: Cylindrical member, 16 (16A, 16B): Power receiving coil, 17: Power-supplied body, 18: No winding part.

Claims (10)

電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、前記給電用コイルの巻き方向が部分的に逆であることを特徴とする電磁気的結合装置。For a magnetic body that is electromagnetically opened, a power supply device in which a power supply coil in which a current flows is wound, a power supply device in which an AC current flows in the power supply coil, and a power receiving coil in a tubular member, A power receiving device in which a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing through the power feeding coil into the power receiving coil to obtain electric power,
The electromagnetic coupling device, wherein the cylindrical member is relatively movably attached to the magnetic body, and a winding direction of the power supply coil is partially reversed. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、前記給電用コイルの密集度が部分的に変化していることを特徴とする電磁気的結合装置。For a magnetic body that is electromagnetically opened, a power supply device in which a power supply coil in which a current flows is wound, a power supply device in which an AC current flows in the power supply coil, and a power receiving coil in a tubular member, A power receiving device in which a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing through the power feeding coil into the power receiving coil to obtain electric power,
The electromagnetic coupling device, wherein the cylindrical member is relatively movably attached to the magnetic body, and the density of the power supply coil is partially changed. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、前記給電用コイルが前記磁性体の複数箇所に設けられており、
前記給電用コイルを駆動する信号の位相とオン・オフとの少なくともいずれか一方を制御する駆動回路を備えたことを特徴とする電磁気的結合装置。For a magnetic body that is electromagnetically opened, a power supply device in which a power supply coil in which a current flows is wound, a power supply device in which an AC current flows in the power supply coil, and a power receiving coil in a tubular member, A power receiving device in which a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing through the power feeding coil into the power receiving coil to obtain electric power,
The tubular member is relatively movably attached to the magnetic body, the power supply coil is provided at a plurality of locations of the magnetic body,
An electromagnetic coupling device, comprising: a drive circuit that controls at least one of a phase and an on / off state of a signal for driving the power supply coil. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置であって、
前記筒状部材が前記磁性体に相対的に移動可能に取り付けられ、
前記受電用コイルが前記筒状部材の複数箇所に設けられ、
前記給電用コイルが前記受電用コイルの長さと同一又は整数倍以上の長さで前記磁性体の複数箇所に設けられ、
前記磁性体と前記筒状部材の相対的な移動に伴うコイル間の電位差により受電状態が変化することを特徴とする電磁気的結合装置。For a magnetic body that is electromagnetically opened, a power supply device in which a power supply coil in which a current flows is wound, a power supply device in which an AC current flows in the power supply coil, and a power receiving coil in a tubular member, A power receiving device in which a power receiving object is connected to the power receiving coil, and an electromagnetic coupling device that electromagnetically induces a current flowing through the power feeding coil into the power receiving coil to obtain electric power,
The tubular member is attached to the magnetic body so as to be relatively movable,
The power receiving coil is provided at a plurality of locations of the tubular member,
The power supply coil is provided at a plurality of locations of the magnetic body with the same length or an integral multiple or more of the length of the power receiving coil,
An electromagnetic coupling device, wherein a power receiving state is changed by a potential difference between coils associated with relative movement of the magnetic body and the cylindrical member. 前記被給電体が発光手段であることを特徴とする請求項１〜４の何れかに記載の電磁気的結合装置。The electromagnetic coupling device according to claim 1, wherein the power-supplied body is a light emitting unit. 前記磁性体および前記筒状部材が柔軟性を有することを特徴とする請求項１〜４の何れかに記載の電磁気的結合装置。The electromagnetic coupling device according to any one of claims 1 to 4, wherein the magnetic body and the cylindrical member have flexibility. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記磁性体に対して相対的に移動可能に取り付けられる筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置に用いられる給電装置であって、
前記給電用コイルは、部分的に巻き方向が逆転して前記磁性体に巻き込まれていることを特徴とする給電装置。A power supply device in which a power supply coil through which a current flows is wound with respect to an electromagnetically opened magnetic body, a power supply device through which an alternating current flows through the power supply coil, and a movable relative to the magnetic body. A power receiving coil is wound around the attached tubular member, and a power receiving device in which a power receiving object is connected to the power receiving coil, electromagnetically inducing a current flowing through the power feeding coil into the power receiving coil. A power supply device used for an electromagnetic coupling device for obtaining electric power,
The power feeding device, wherein the power feeding coil is partially wound in the magnetic body with the winding direction reversed. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記磁性体に対して相対的に移動可能に取り付けられる筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置に用いられる給電装置であって、
前記給電用コイルは、密集度が部分的に変化して前記磁性体に巻き込まれていることを特徴とする給電装置。A power supply device in which a power supply coil through which a current flows is wound with respect to an electromagnetically opened magnetic body, a power supply device through which an alternating current flows through the power supply coil, and a movable relative to the magnetic body. A power receiving coil is wound around the attached tubular member, and a power receiving device in which a power receiving object is connected to the power receiving coil, electromagnetically inducing a current flowing through the power feeding coil into the power receiving coil. A power supply device used for an electromagnetic coupling device for obtaining electric power,
The power feeding device, wherein the power feeding coil is wound around the magnetic body with the density partially changed. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記磁性体に対して相対的に移動可能に取り付けられる筒状部材に受電用コイルが巻き込まれ、該受電用コイルに被給電体が接続された受電装置とを備え、前記給電用コイルに流れる電流を前記受電用コイルに電磁気的に誘起して電力を得る電磁気的結合装置に用いられる給電装置であって、
前記給電用コイルは、前記磁性体の複数箇所に設けられていることを特徴とする給電装置。A power supply device in which a power supply coil through which a current flows is wound with respect to an electromagnetically opened magnetic body, a power supply device through which an alternating current flows through the power supply coil, and a movable relative to the magnetic body. A power receiving coil is wound around the attached tubular member, and a power receiving device in which a power receiving object is connected to the power receiving coil, electromagnetically inducing a current flowing through the power feeding coil into the power receiving coil. A power supply device used for an electromagnetic coupling device for obtaining electric power,
The power supply device, wherein the power supply coil is provided at a plurality of locations on the magnetic body. 電磁気的に開放された磁性体に対し、電流が流れる給電用コイルが巻き込まれた給電装置と、前記給電用コイルに交流電流を流す電源装置と、前記給電用コイルに流れる電流が電磁気的に誘起される受電用コイルを有する受電装置とを備えた電磁気的結合装置に用いられる受電装置であって、
前記受電用コイルが筒状部材に巻き込まれており、該筒状部材が前記磁性体に対して相対的に移動可能に設けられることを特徴とする受電装置。A power supply device in which a power supply coil through which a current flows is wound around a magnetic body that is electromagnetically opened, a power supply device that supplies an AC current to the power supply coil, and a current flowing through the power supply coil is electromagnetically induced. A power receiving device used for an electromagnetic coupling device including a power receiving device having a power receiving coil to be used,
The power receiving device, wherein the power receiving coil is wound around a cylindrical member, and the cylindrical member is provided so as to be relatively movable with respect to the magnetic body.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011243772A (en) * 2010-05-19 2011-12-01 Auto Network Gijutsu Kenkyusho:Kk Wireless power supply coil and wireless power supply system
WO2012169047A1 (en) * 2011-06-09 2012-12-13 トヨタ自動車株式会社 Power-receiving device, vehicle, and non-contact power supply system
WO2013012585A1 (en) * 2011-07-21 2013-01-24 Ut-Battelle, Llc Wireless power transfer electric vehicle supply equipment installation and validation tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011243772A (en) * 2010-05-19 2011-12-01 Auto Network Gijutsu Kenkyusho:Kk Wireless power supply coil and wireless power supply system
WO2012169047A1 (en) * 2011-06-09 2012-12-13 トヨタ自動車株式会社 Power-receiving device, vehicle, and non-contact power supply system
JPWO2012169047A1 (en) * 2011-06-09 2015-02-23 トヨタ自動車株式会社 Power receiving device, vehicle, and non-contact power feeding system
WO2013012585A1 (en) * 2011-07-21 2013-01-24 Ut-Battelle, Llc Wireless power transfer electric vehicle supply equipment installation and validation tool
US9260026B2 (en) 2011-07-21 2016-02-16 Ut-Battelle, Llc Vehicle to wireless power transfer coupling coil alignment sensor

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