JPH0837121A - Power supply device - Google Patents
Power supply deviceInfo
- Publication number
- JPH0837121A JPH0837121A JP6174031A JP17403194A JPH0837121A JP H0837121 A JPH0837121 A JP H0837121A JP 6174031 A JP6174031 A JP 6174031A JP 17403194 A JP17403194 A JP 17403194A JP H0837121 A JPH0837121 A JP H0837121A
- Authority
- JP
- Japan
- Prior art keywords
- core
- primary
- power supply
- winding
- wound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 97
- 239000004020 conductor Substances 0.000 claims description 13
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 32
- 238000010168 coupling process Methods 0.000 abstract description 27
- 238000005859 coupling reaction Methods 0.000 abstract description 27
- 230000008878 coupling Effects 0.000 abstract description 26
- 238000010586 diagram Methods 0.000 description 30
- 230000005669 field effect Effects 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 12
- 230000010355 oscillation Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000009499 grossing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、非接触式充電器や浴室
内等の水回りで使用可能な電気機器に用いられる給電装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device used in a non-contact type charger or an electric device that can be used around a water such as in a bathroom.
【０００２】[0002]
【従来の技術】従来、変圧器を介して１次入力から所要
の２次出力を得る自励式インバータ電源回路が報告され
ている（「Ｃ級自励発振形コンバータについて」電子情
報通信学会技術研究報告 第1〜6頁，Vol 91，No 37，19
91年5月17日発行）。2. Description of the Related Art Conventionally, a self-excited inverter power supply circuit that obtains a required secondary output from a primary input via a transformer has been reported ("Class C Self-Excited Oscillation Converter" Technical Report of IEICE. Report 1-6, Vol 91, No 37, 19
Published May 17, 1991).
【０００３】この回路図を図２２に示す。このインバー
タ電源回路は、自励発振のために、トランス１の１次巻
線Ｌ１及びコンデンサＣ１からなる共振回路、スイッチ
ング用の電界効果トランジスタ２及び１次巻線Ｌ１と結
合する帰還巻線Ｌ３等を備えており、２次巻線Ｌ２に出
力を送出するようになっている。バイアス電圧発生用の
コンデンサＣ２は、抵抗Ｒ１を介して電源３に接続さ
れ、電源３からコンデンサＣ２への充電によりバイアス
電圧ＶBが得られている。抵抗Ｒ１とコンデンサＣ２と
の接続点は、帰還巻線Ｌ３を介して電界効果トランジス
タ２のゲートに接続されており、帰還巻線Ｌ３を介して
得られるゲート・ソース間電圧（以下、ゲート電圧ＶG
という）が電界効果トランジスタ２のスレショルド電圧
Ｖｔｈに達すると、電界効果トランジスタ２をオンさせ
るようになっている。また、抵抗Ｒ１とコンデンサＣ２
との接続点は、抵抗Ｒ２及びダイオードＤ１の直列回路
で構成されるバイアス制御回路を介して共振回路のＡ点
に接続されている。そして、電界効果トランジスタ２の
オン期間中に、コンデンサＣ２のバイアス電圧ＶBが電
界効果トランジスタ２のドレイン電圧ＶDより高くなる
と、上記バイアス電圧制御回路、電界効果トランジスタ
２を通って、コンデンサＣ２の電荷が放電されるように
なっている。FIG. 22 shows this circuit diagram. This inverter power supply circuit includes a resonance circuit including a primary winding L1 of a transformer 1 and a capacitor C1 for self-excited oscillation, a field effect transistor 2 for switching, and a feedback winding L3 coupled to the primary winding L1. And outputs the output to the secondary winding L2. The bias voltage generating capacitor C2 is connected to the power source 3 via the resistor R1, and the bias voltage V B is obtained by charging the capacitor C2 from the power source 3. The connection point between the resistor R1 and the capacitor C2 is connected to the gate of the field effect transistor 2 via the feedback winding L3, and the gate-source voltage (hereinafter referred to as the gate voltage V3) obtained via the feedback winding L3. G
Is reached to the threshold voltage Vth of the field effect transistor 2, the field effect transistor 2 is turned on. Also, the resistor R1 and the capacitor C2
The connection point between and is connected to the point A of the resonance circuit via a bias control circuit formed of a series circuit of a resistor R2 and a diode D1. When the bias voltage V B of the capacitor C2 becomes higher than the drain voltage V D of the field effect transistor 2 during the ON period of the field effect transistor 2, the capacitor C2 passes through the bias voltage control circuit and the field effect transistor 2. The electric charge is designed to be discharged.
【０００４】なお、トランス１の２次巻線Ｌ２には、２
次巻線Ｌ２に誘起された電力を整流するダイオードＤ２
が接続されており、このダイオードＤ２を経て直流電流
が負荷４へ供給されるようになっている。The secondary winding L2 of the transformer 1 has 2
Diode D2 that rectifies the power induced in the secondary winding L2
Are connected, and a direct current is supplied to the load 4 via the diode D2.
【０００５】次に、定常時における動作について図２３
の波形図を用いて説明する。ここで、コンデンサＣ２の
バイアス電圧をＶB、電界効果トランジスタ２のドレイ
ン電圧をＶD、ゲート電圧をＶGとする。先ず、電源３の
接続による起動時について説明すると、抵抗Ｒ１を通し
てコンデンサＣ２が充電され、バイアス電圧ＶBが上昇
する。そして、バイアス電圧ＶBによりゲート電圧ＶGが
電界効果トランジスタ２のスレショルド電圧Ｖｔｈに達
することにより、電界効果トランジスタ２がオンし、以
後、図２３に示すように発振動作が持続される。Next, the operation in the steady state is shown in FIG.
This will be described with reference to the waveform chart of. Here, the bias voltage of the capacitor C2 is V B , the drain voltage of the field effect transistor 2 is V D , and the gate voltage is V G. First, the start-up by connecting the power supply 3 will be described. The capacitor C2 is charged through the resistor R1 and the bias voltage V B rises. When the gate voltage V G reaches the threshold voltage Vth of the field effect transistor 2 by the bias voltage V B , the field effect transistor 2 is turned on, and thereafter, the oscillation operation is continued as shown in FIG.
【０００６】ここで、ドレイン電圧ＶDがバイアス電圧
ＶBより低下すると、上記バイアス制御回路から電界効
果トランジスタ２を通してコンデンサＣ２の電荷が放電
され、バイアス電圧ＶBが低下する。このため、このバ
イアス電圧ＶBに重畳されているゲート電圧ＶGが徐々に
低下していって、電界効果トランジスタ２のスレショル
ド電圧Ｖｔｈに近づいて電界効果トランジスタ２のオン
時間が短縮される。一方、電界効果トランジスタ２のオ
ン時間が短縮されると、コンデンサＣ２の放電時間が減
少することとなって、バイアス電圧ＶBは逆に上昇する
こととなる。When the drain voltage V D becomes lower than the bias voltage V B , the electric charge of the capacitor C2 is discharged from the bias control circuit through the field effect transistor 2 and the bias voltage V B is lowered. Therefore, the bias voltage began to decrease gradually the gate voltage V G, which is superimposed on the V B, the ON time of the field effect transistor 2 is reduced close to the threshold voltage Vth of the field effect transistor 2. On the other hand, when the ON time of the field effect transistor 2 is reduced, becomes the discharge time of the capacitor C2 is reduced, the bias voltage V B becomes possible to increase the reverse.
【０００７】この結果、バイアス電圧ＶBが安定化する
方向に負帰還がかかり、図２３に示すように共振回路に
よる安定した自励発振動作が持続することとなる。ま
た、電源電圧が変動した時、例えば電源３の電圧が変動
して高くなると、電界効果トランジスタ２のオン時間が
長くなるのでコンデンサＣ２の放電時間が長くなり、バ
イアス電圧ＶBが低下して、負荷電力を一定化するよう
にオン時間が短縮される。As a result, negative feedback is applied in the direction in which the bias voltage V B is stabilized, and the stable self-excited oscillation operation by the resonance circuit is continued as shown in FIG. When the power supply voltage fluctuates, for example, when the voltage of the power supply 3 fluctuates and becomes high, the ON time of the field effect transistor 2 becomes long, the discharge time of the capacitor C2 becomes long, and the bias voltage V B decreases. The on-time is shortened so that the load power becomes constant.
【０００８】このようなインバータ電源回路が適用され
る給電装置の構成の一例を図２４に示す。この給電装置
は、電源部１０と負荷部１１とが別体で構成され、電源
部１０側に１次巻線Ｌ１が巻回された１次コア７を、負
荷部１１側に２次巻線Ｌ２が巻回された２次コア６を備
え、接点を有しない非接触式になっている。電源部１０
に接続された交流商用電源から入力された電圧が整流平
滑回路９で直流電圧に変換され、この電圧が発振回路８
により発振する。この発振により、コ字状の１次コア７
に巻回された１次巻線Ｌ１に交流磁束が発生する。この
交流磁束は、１次巻線Ｌ１に対向して配置される負荷部
１１のＩ字状の２次コア６に巻回された２次巻線Ｌ２に
伝えられ、相互誘導作用により、２次巻線Ｌ２に電圧が
誘起される。この誘起電圧は整流平滑回路５で整流さ
れ、直流電流が２次電池からなる負荷４に供給される。FIG. 24 shows an example of the structure of a power supply device to which such an inverter power supply circuit is applied. In this power supply device, a power supply unit 10 and a load unit 11 are separately configured, and a primary core 7 having a primary winding L1 wound around the power supply unit 10 side and a secondary winding 7 around the load unit 11 side. It is a non-contact type having a secondary core 6 around which L2 is wound and having no contact. Power supply 10
The voltage input from the AC commercial power source connected to is converted into a DC voltage by the rectifying and smoothing circuit 9, and this voltage is generated by the oscillating circuit 8.
Oscillates by. Due to this oscillation, the U-shaped primary core 7
AC magnetic flux is generated in the primary winding L1 wound around. This AC magnetic flux is transmitted to the secondary winding L2 that is wound around the I-shaped secondary core 6 of the load section 11 that is arranged so as to face the primary winding L1, and the secondary magnetic flux is generated by the mutual induction action. A voltage is induced in the winding L2. This induced voltage is rectified by the rectifying / smoothing circuit 5, and a direct current is supplied to the load 4 composed of a secondary battery.
【０００９】このように、電源部１０と負荷部１１とを
別体で構成し、接点を有しない非接触式にすることによ
って、非接触式の充電器や浴室内等の水回りで使用可能
な電気機器に適用することができる。As described above, the power source unit 10 and the load unit 11 are separately formed, and by making them non-contact type without any contact point, they can be used around a water such as a non-contact type charger or a bathroom. It can be applied to various electrical equipment.
【００１０】[0010]
【発明が解決しようとする課題】しかしながら、上記従
来の給電装置においては、１次巻線Ｌ１が１次コア７の
中央部に巻回されているため、磁力線の分布が、図２５
の点線で示すようになっており、１次コア７の１次巻線
Ｌ１で発生した磁束の多くが、２次コア６以外の空間に
漏れている。However, in the above-mentioned conventional power feeding device, since the primary winding L1 is wound around the central portion of the primary core 7, the distribution of magnetic field lines is as shown in FIG.
As shown by the dotted line in FIG. 5, most of the magnetic flux generated in the primary winding L1 of the primary core 7 leaks to the space other than the secondary core 6.
【００１１】このため、１次巻線Ｌ１と２次巻線Ｌ２と
の結合係数は低下する。また、コアに近接して金属製の
電子部品等を配置すると、この漏れ磁束による渦電流損
の発生によって発熱し、電気特性等を変化させてしまう
ため、コア近傍に電子部品等を配置することができな
い。Therefore, the coupling coefficient between the primary winding L1 and the secondary winding L2 is lowered. If electronic parts made of metal are placed close to the core, heat will be generated due to the generation of eddy current loss due to this leakage magnetic flux, and the electrical characteristics will change, so place electronic parts near the core. I can't.
【００１２】また、巻線が巻回されるコアを可能な限り
小型化することによって装置全体の小型化が可能になる
が、漏れ磁束を増大させることなく更に小型化すること
が困難であった。[0012] Also, by miniaturizing the core around which the winding is wound as much as possible, it is possible to miniaturize the entire apparatus, but it is difficult to further miniaturize without increasing leakage flux. .
【００１３】従来、ギャップを有して対向するコア間の
漏れ磁束を低減するチョークコイルのボビンが提案され
ている（特開平５−１３２４５号公報）。しかし、この
ボビンは、高抵抗、高透磁率材料で形成することにより
磁束が巻線巻回部分から漏洩するのを防止するものであ
って、１次巻線を有する１次コアと２次巻線を有する２
次コアとが分離して構成され、巻線間の相互誘導作用を
利用する場合に生じるコアからの磁束の漏れを防止する
ものではない。Conventionally, there has been proposed a bobbin of a choke coil which has a gap and reduces leakage magnetic flux between opposing cores (JP-A-5-13245). However, this bobbin prevents leakage of magnetic flux from the winding winding portion by being formed of a material having high resistance and high magnetic permeability, and has a primary core having a primary winding and a secondary winding. Two with lines
It does not prevent the leakage of magnetic flux from the core, which occurs when the mutual induction action between the windings is used because it is configured separately from the next core.
【００１４】本発明は、上記課題に鑑みてなされたもの
で、１次コアと２次コアとの結合係数を増大させ、漏れ
磁束を低減して、装置本体の小型化を図る給電装置を提
供することを目的とする。The present invention has been made in view of the above problems, and provides a power supply device for increasing the coupling coefficient between the primary core and the secondary core and reducing the leakage flux to reduce the size of the device body. The purpose is to do.
【００１５】また、本発明は、漏れ磁束を低減しつつコ
アを小型化する給電装置を提供することを目的とする。It is another object of the present invention to provide a power feeding device that reduces the leakage flux and downsizes the core.
【００１６】[0016]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、１次巻線が巻回された１次コアを有する
電源部と、２次巻線が巻回された２次コアを有する負荷
部とがそれぞれ分離独立して形成されてなり、上記電源
部に上記負荷部を装着することにより上記１次コアの両
端面と上記２次コアの両端面とが互いに対向して磁気結
合する給電装置において、上記１次コア及び上記２次コ
アは、それぞれ一対の脚部とその間の橋渡し部とからな
り、上記装着時に各コアの脚部両端面の対向部が互いに
対向する位置に設けられており、少なくとも上記１次巻
線は、上記１次コアの両脚部に直列接続されるように巻
回されている（請求項１）。In order to achieve the above object, the present invention provides a power supply unit having a primary core around which a primary winding is wound, and a secondary around which a secondary winding is wound. A load part having a core is formed separately from each other, and by mounting the load part on the power supply part, both end faces of the primary core and both end faces of the secondary core face each other. In the magnetically-coupling power feeding device, the primary core and the secondary core each include a pair of legs and a bridging portion therebetween, and positions at which opposing portions of both end faces of each core face each other when the core is mounted. And at least the primary winding is wound so as to be connected in series to both legs of the primary core (claim 1).
【００１７】また、上記１次巻線及び上記２次巻線は、
プリント基板上の導電材からなるパターンで形成されて
いる（請求項２）。The primary winding and the secondary winding are
It is formed in a pattern made of a conductive material on a printed circuit board (claim 2).
【００１８】また、上記１次コアの脚部には、帰還巻線
が巻回されている（請求項３）。A feedback winding is wound around the leg of the primary core (claim 3).
【００１９】また、請求項１記載の給電装置において、
孔が穿設されたプリント基板を備え、上記プリント基板
は、上記孔を介して上記１次コアに貫通され、かつ、基
板面上には上記孔を中心に導電材からなる螺旋状のパタ
ーンを有する帰還巻線が形成されている（請求項４）。Further, in the power feeding device according to claim 1,
The printed circuit board is provided with a hole, the printed circuit board penetrates the primary core through the hole, and a spiral pattern made of a conductive material is formed around the hole on the substrate surface. The feedback winding has is formed (claim 4).
【００２０】また、上記１次コア及び上記２次コアは、
それぞれ上記対向部の断面積が相対的に大きく形成され
ている（請求項５）。Further, the primary core and the secondary core are
Each of the facing portions is formed to have a relatively large cross-sectional area (claim 5).
【００２１】また、上記２次コアは、上記対向部の断面
積が相対的に大きく形成されている（請求項６）。Further, in the secondary core, the cross-sectional area of the facing portion is relatively large (claim 6).
【００２２】また、上記１次コア及び上記２次コアは、
それぞれ上記対向部が別体で形成されている（請求項
７）。Further, the primary core and the secondary core are
The facing portions are formed separately from each other (claim 7).
【００２３】また、請求項１記載の給電装置において、
上記電源部を収納する第１の筐体と、上記負荷部を収納
する第２の筐体とを備え、上記１次コアは、上記対向部
が上記第１の筐体に埋設され、上記２次コアは、上記対
向部が上記第２の筐体に埋設されている（請求項８）。Further, in the power supply device according to claim 1,
A first housing for accommodating the power supply unit and a second housing for accommodating the load unit, wherein the opposing portion of the primary core is embedded in the first housing, In the next core, the facing portion is embedded in the second casing (claim 8).
【００２４】また、上記２次コアは、上記対向部がプリ
ント基板上の磁性材からなるパターンで形成されている
（請求項９）。The opposing portion of the secondary core is formed in a pattern made of a magnetic material on a printed circuit board (claim 9).
【００２５】[0025]
【作用】請求項１記載の発明によれば、少なくとも１次
巻線は、１次コアの両脚部に直列接続されるように巻回
されているので、１次コアと２次コアとの結合係数が増
大し、１次側から２次側への漏れ磁束が低減することと
なる。なお、２次巻線の方も、２次コアの両脚部に直列
接続されるように巻回するようにしてもよい。According to the invention described in claim 1, since at least the primary winding is wound so as to be connected in series to both legs of the primary core, the coupling between the primary core and the secondary core is achieved. The coefficient increases, and the leakage flux from the primary side to the secondary side is reduced. The secondary winding may also be wound so as to be connected in series to both legs of the secondary core.
【００２６】また、請求項２記載の発明によれば、少な
くとも１次巻線は、１次コアの両脚部に直列接続される
ように巻回されているので、漏れ磁束が低減する。従っ
て、プリント基板を共用化して電子回路部品等を搭載し
ても、悪影響が及ぼされることがないため、スペース効
率が向上することとなる。According to the second aspect of the present invention, since at least the primary winding is wound so as to be connected in series to both legs of the primary core, the leakage magnetic flux is reduced. Therefore, even if the printed circuit board is shared and an electronic circuit component or the like is mounted, no adverse effect is exerted, and the space efficiency is improved.
【００２７】また、請求項３記載の発明によれば、帰還
巻線は、１次巻線が巻回された１次コアの脚部に巻回さ
れているので、１次巻線との磁気結合状態が向上し、漏
れ磁束が低減する。According to the third aspect of the invention, the feedback winding is wound around the leg of the primary core around which the primary winding is wound. The coupling state is improved and the leakage magnetic flux is reduced.
【００２８】また、請求項４記載の発明によれば、漏れ
磁束が低減するので、プリント基板を共用化して帰還巻
線に近接して電子回路部品等を搭載しても、悪影響が及
ぼされることがないため、スペース効率が向上すること
となる。Further, according to the invention as set forth in claim 4, since the leakage magnetic flux is reduced, even if the printed circuit board is shared and the electronic circuit parts and the like are mounted in the vicinity of the feedback winding, a bad influence is exerted. Therefore, the space efficiency is improved.
【００２９】また、請求項５記載の発明によれば、磁気
結合状態が低下することなく、１次コア及び２次コアの
対向部以外の部分が小型化される。According to the fifth aspect of the invention, the parts other than the facing parts of the primary core and the secondary core are downsized without deteriorating the magnetic coupling state.
【００３０】また、請求項６記載の発明によれば、磁気
結合状態が低下することなく、２次コアの対向部以外の
部分が小型化される。According to the sixth aspect of the present invention, the magnetic coupling state is not deteriorated, and the portion of the secondary core other than the facing portion is downsized.
【００３１】また、請求項７記載の発明によれば、対向
部が相対的に大きい場合には、別体形成により、コア成
形が容易になる。According to the invention described in claim 7, when the facing portion is relatively large, the core molding is facilitated by forming a separate body.
【００３２】また、請求項８記載の発明によれば、電源
部に負荷部を装着すると、第１の筐体及び第２の筐体に
よって、１次コアと２次コアの対向部のギャップ長が規
制される。従って、ギャップ長が一定に保持される。According to the eighth aspect of the present invention, when the load section is attached to the power source section, the gap length between the opposing portions of the primary core and the secondary core is increased by the first casing and the second casing. Is regulated. Therefore, the gap length is kept constant.
【００３３】また、請求項９記載の発明によれば、漏れ
磁束が低減するので、プリント基板を共用化して２次巻
線に近接して電子回路部品等を搭載しても、悪影響が及
ぼされることがないため、スペース効率が向上すること
となる。According to the ninth aspect of the invention, since the leakage magnetic flux is reduced, even if the printed circuit board is shared and the electronic circuit parts and the like are mounted in the vicinity of the secondary winding, adverse effects are exerted. Therefore, the space efficiency is improved.
【００３４】[0034]
【実施例】以下、本発明に係る給電装置の実施例につい
て、図面を参照しながら説明する。図１は磁気結合部分
の第１実施例を示す構成図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a power supply device according to the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a first embodiment of a magnetic coupling portion.
【００３５】この給電装置は、電源部１０と負荷部１１
とが別体で構成され、電源部１０側に１次巻線Ｌ１が巻
回された１次コアＫ１を、負荷部１１側に２次巻線Ｌ２
が巻回された２次コアＫ２を備えている。そして、電源
部１０に負荷部１１を装着すると、１次巻線Ｌ１と２次
巻線Ｌ２とが磁気結合して、１次巻線Ｌ１側から２次巻
線Ｌ２側に電磁誘導によって電力が伝達可能になってい
る。This power supply device includes a power supply section 10 and a load section 11.
Is a separate body, and the primary core K1 on which the primary winding L1 is wound on the power supply unit 10 side and the secondary core L2 on the load unit 11 side.
Is provided with a secondary core K2. Then, when the load unit 11 is mounted on the power supply unit 10, the primary winding L1 and the secondary winding L2 are magnetically coupled, and electric power is generated from the primary winding L1 side to the secondary winding L2 side by electromagnetic induction. It can be transmitted.
【００３６】１次コアＫ１は、一対の脚部Ｋ１１及びそ
の間の橋渡し部Ｋ１２からなるコ字状を有している。２
次コアＫ２は、同様に、一対の脚部Ｋ２１及びその間の
橋渡し部Ｋ２２からなるコ字状を有し、脚部Ｋ１１と脚
部Ｋ２１の端面が対向しえるようになっている。なお、
脚部Ｋ１１，Ｋ２１の端面面積は、一致している。The primary core K1 has a U-shape composed of a pair of leg portions K11 and a bridging portion K12 between them. Two
Similarly, the next core K2 has a U-shape including a pair of leg portions K21 and a bridging portion K22 between them, and the end surfaces of the leg portions K11 and K21 can face each other. In addition,
The end surface areas of the legs K11 and K21 are the same.
【００３７】１次巻線Ｌ１は、１次コアＫ１の両脚部Ｋ
１１に互いに逆極性となるように直列に巻回され、１次
巻線Ｌ１の両端は、従来装置同様、発振回路に接続さ
れ、交流電源が供給されるようになっている。また、２
次巻線Ｌ２は、２次コアＫ２の両脚部Ｋ２１に直列に巻
回され、その両端は整流平滑回路を介して負荷に接続さ
れている。The primary winding L1 is composed of both legs K of the primary core K1.
11 are wound in series so that the polarities thereof are opposite to each other, and both ends of the primary winding L1 are connected to an oscillation circuit as in the conventional device to be supplied with AC power. Also, 2
The secondary winding L2 is wound in series around both legs K21 of the secondary core K2, and both ends thereof are connected to a load via a rectifying / smoothing circuit.
【００３８】このように、１次巻線Ｌ１及び２次巻線Ｌ
２を、各コアの脚部Ｋ１１，Ｋ２１に巻回することによ
って、磁力線の分布が図２の点線で示すようになり、従
来の場合に比して、漏れ磁束を大幅に低減することがで
きる。特に、橋渡し部Ｋ１２，Ｋ２２近傍における漏れ
磁束が低減できるので、金属製の電子回路部品を橋渡し
部Ｋ１２，Ｋ２２に近接して配置することができる。従
って、スペース効率を向上し、装置の小型化が図れる。Thus, the primary winding L1 and the secondary winding L
By winding No. 2 around the leg portions K11 and K21 of each core, the distribution of the lines of magnetic force becomes as shown by the dotted line in FIG. 2, and the leakage magnetic flux can be significantly reduced as compared with the conventional case. . In particular, since the leakage magnetic flux in the vicinity of the bridging portions K12, K22 can be reduced, it is possible to dispose the metal electronic circuit component in the vicinity of the bridging portions K12, K22. Therefore, space efficiency can be improved and the device can be downsized.
【００３９】図３は磁気結合部分の第２実施例を示す構
成図である。第２実施例では、１次巻線Ｌ１のみが１次
コアＫ１の脚部Ｋ１１に巻回され、２次巻線Ｌ２は、２
次コアＫ２の橋渡し部Ｋ２２に巻回されている。この場
合でも、同様に漏れ磁束を低減することができる。FIG. 3 is a block diagram showing a second embodiment of the magnetic coupling portion. In the second embodiment, only the primary winding L1 is wound around the leg K11 of the primary core K1, and the secondary winding L2 is
It is wound around the bridging portion K22 of the next core K2. Even in this case, the leakage magnetic flux can be similarly reduced.
【００４０】図４は磁気結合部分の第３実施例を示す構
成図である。第３実施例では、１次巻線Ｌ１及び２次巻
線Ｌ２は、それぞれプリント基板Ｐ１，Ｐ２上に形成さ
れた導電材からなるパターンで構成されている。FIG. 4 is a block diagram showing a third embodiment of the magnetic coupling portion. In the third embodiment, each of the primary winding L1 and the secondary winding L2 is formed of a conductive material pattern formed on the printed circuit boards P1 and P2.
【００４１】プリント基板Ｐ１は、２箇所に孔Ｐ１１が
穿設され、１次コアＫ１の脚部Ｋ１１がこの孔Ｐ１１に
貫通した状態で、不図示の支持手段によって電源部１０
の筐体内に支持されている。導電材からなるパターン
は、各孔Ｐ１１の周囲に螺旋状に形成されてなり、両パ
ターン間をジャンパー線Ｊで逆極性となるように直列に
接続するとともに、リード線Ｂで図外の発振回路に接続
されている。The printed circuit board P1 is provided with holes P11 at two positions, and the power source unit 10 is supported by a supporting means (not shown) with the leg K11 of the primary core K1 penetrating the hole P11.
It is supported in the housing. The pattern made of a conductive material is formed in a spiral shape around each hole P11, and both patterns are connected in series by a jumper wire J so as to have opposite polarities, and a lead wire B connects an oscillation circuit (not shown). It is connected to the.
【００４２】プリント基板Ｐ２は、プリント基板Ｐ１と
同様に、２箇所に孔Ｐ２１が穿設され、２次コアＫ２の
脚部Ｋ２１がこの孔Ｐ２１に貫通した状態で、不図示の
支持手段によって負荷部１１の筐体内に支持されてい
る。２次巻線Ｌ２は、導電材からなるパターンが各孔Ｐ
２１の周囲に螺旋状に形成されて構成されている。そし
て、両パターンは、１次巻線Ｌ１の場合と同様、ジャン
パー線とリード線で整流平滑回路に接続されている。Like the printed board P1, the printed board P2 is provided with holes P21 at two positions, and the legs K21 of the secondary core K2 are penetrated through the holes P21. It is supported in the housing of the part 11. The secondary winding L2 has a pattern made of a conductive material for each hole P.
It is formed by spirally forming around 21. Both patterns are connected to the rectifying / smoothing circuit by jumper wires and lead wires, as in the case of the primary winding L1.
【００４３】このように、導電材からなるパターンで構
成された１次巻線Ｌ１及び２次巻線Ｌ２を、各コアの脚
部Ｋ１１，Ｋ２１に巻回することによって、第１実施例
と同様に、漏れ磁束を大幅に低減することができる。ま
た、各巻線Ｌ１，Ｌ２がプリント基板Ｐ１，Ｐ２上に形
成されているので、コイルボビンを用いることなく、巻
線を固定することができる。また、漏れ磁束が低減され
ているので、図４に示すように、２次巻線Ｌ２近傍のプ
リント基板Ｐ２上に電子部品Ａを配設しても、渦電流損
に伴う発熱等の異常事態が生じることがない。従って、
スペース効率を向上することができる。As described above, by winding the primary winding L1 and the secondary winding L2, which are made of a conductive material pattern, around the leg portions K11 and K21 of each core, the same as in the first embodiment. Moreover, the leakage flux can be significantly reduced. Further, since the windings L1 and L2 are formed on the printed boards P1 and P2, the windings can be fixed without using the coil bobbin. Further, since the leakage magnetic flux is reduced, as shown in FIG. 4, even if the electronic component A is arranged on the printed circuit board P2 near the secondary winding L2, an abnormal situation such as heat generation due to eddy current loss. Does not occur. Therefore,
Space efficiency can be improved.
【００４４】図５は磁気結合部分の第４実施例を示す構
成図である。第４実施例では、コイルボビンＨ１，Ｈ２
が用いられている。コイルボビンＨ１，Ｈ２は、各コア
の脚部Ｋ１１，Ｋ２１に嵌合し、接触圧や摩擦力などに
よって固定され、１次巻線Ｌ１及び２次巻線Ｌ２がそれ
ぞれ直列接続されるように巻回されている。この構成に
よっても、１次コアＫ１と２次コアＫ２間の漏れ磁束を
低減できる。FIG. 5 is a block diagram showing a fourth embodiment of the magnetic coupling portion. In the fourth embodiment, the coil bobbins H1, H2
Is used. The coil bobbins H1 and H2 are fitted to the leg portions K11 and K21 of each core, fixed by contact pressure or frictional force, and wound so that the primary winding L1 and the secondary winding L2 are connected in series. Has been done. Also with this configuration, the leakage magnetic flux between the primary core K1 and the secondary core K2 can be reduced.
【００４５】また、１次側のコイルボビンＨ１の一方に
は、帰還巻線Ｌ３が併せて巻回されており、１次巻線Ｌ
１との結合状態を向上させている。この帰還巻線Ｌ３
は、発振回路に接続され、１次巻線Ｌ１の発振を持続さ
せるためのものである。A feedback winding L3 is also wound around one of the primary side coil bobbins H1.
The binding state with 1 is improved. This feedback winding L3
Is connected to the oscillation circuit and is for maintaining the oscillation of the primary winding L1.
【００４６】図６は磁気結合部分の第５実施例を示す構
成図である。第５実施例では、帰還巻線Ｌ３は、第４実
施例と異なり、プリント基板Ｐ３上に形成された導電材
からなるパターンで構成されている。プリント基板Ｐ３
は、孔Ｐ３１が穿設されており、１次コアＫ１に貫通さ
れた状態で、橋渡し部Ｋ１２に配設されている。帰還巻
線Ｌ３を構成する導電材からなるパターンは、孔Ｐ３１
の周囲に形成されている。FIG. 6 is a block diagram showing a fifth embodiment of the magnetic coupling portion. In the fifth embodiment, the feedback winding L3 is different from the fourth embodiment in that the feedback winding L3 has a pattern made of a conductive material formed on the printed circuit board P3. Printed circuit board P3
Has a hole P31 and is provided in the bridging portion K12 in a state of being penetrated by the primary core K1. The pattern made of the conductive material forming the feedback winding L3 has a hole P31.
Is formed around the.
【００４７】このような構成により、漏れ磁束が低減し
ているので、プリント基板Ｐ３上の帰還巻線Ｌ３に近い
位置に対しても、図６に示すように電子部品Ａを実装す
ることができる。従って、スペース効率を向上すること
ができる。Since the leakage flux is reduced by such a configuration, the electronic component A can be mounted as shown in FIG. 6 even at a position near the feedback winding L3 on the printed board P3. . Therefore, space efficiency can be improved.
【００４８】図７は磁気結合部分の第６実施例を示す構
成図である。第６実施例では、１次コアＫ１及び２次コ
アＫ２の断面積を脚部Ｋ１１，Ｋ２１の端部で相対的に
大きくさせている。すなわち、対向部Ｋ１３，Ｋ２３が
各コアの脚部Ｋ１１，Ｋ２１の先端に形成され、この対
向部Ｋ１３，Ｋ２３の端面面積が第１実施例と同様にな
っている。一方、橋渡し部Ｋ１２，Ｋ２２及び脚部Ｋ１
１，Ｋ２１は薄形化され、橋渡し部Ｋ１２，Ｋ２２は更
に細くされている。なお、各巻線Ｌ１，Ｌ２は、第１実
施例と同様に、それぞれ脚部Ｋ１１，Ｋ２１に巻回され
ている。FIG. 7 is a block diagram showing a sixth embodiment of the magnetic coupling portion. In the sixth embodiment, the cross-sectional areas of the primary core K1 and the secondary core K2 are relatively large at the ends of the leg portions K11 and K21. That is, the facing portions K13 and K23 are formed at the tips of the leg portions K11 and K21 of each core, and the end surface areas of the facing portions K13 and K23 are the same as in the first embodiment. On the other hand, the bridging parts K12 and K22 and the leg part K1
1, K21 are made thinner, and the bridging parts K12, K22 are made thinner. The windings L1 and L2 are wound around the leg portions K11 and K21, respectively, as in the first embodiment.
【００４９】対向部Ｋ１３，Ｋ２３の端面面積を相対的
に大きくした理由は、以下のとおりである。図８は全体
的にほぼ同一の太さで形成され、脚部Ｋ１１，Ｋ２１に
１次巻線Ｌ１及び２次巻線Ｌ２が巻回されているものを
示している。この磁気的な簡易等価回路を図９に示す。
図９において、Ｒｇは、１次コアＫ１と２次コアＫ２と
の対向部のギャップにおける磁気抵抗、Ｒ１，Ｒ２は、
それぞれ１次コアＫ１、２次コアＫ２の磁気抵抗、Ｒ０
１，Ｒ０２は、それぞれ１次コアＫ１、２次コアＫ２の
空間部の磁気抵抗である。なお、一般的に、Ｒ０１，Ｒ
０２＞Ｒｇで、Ｒ１，Ｒ２≪Ｒｇである。The reason why the end face areas of the facing portions K13 and K23 are made relatively large is as follows. FIG. 8 shows that the primary winding L1 and the secondary winding L2 are wound around the leg portions K11 and K21, which are formed to have substantially the same thickness as a whole. This magnetic simple equivalent circuit is shown in FIG.
In FIG. 9, Rg is the magnetic resistance in the gap between the primary core K1 and the secondary core K2, and R1 and R2 are
Reluctance of primary core K1 and secondary core K2, R0, respectively
Reference numerals 1 and R02 are magnetic resistances of the space portions of the primary core K1 and the secondary core K2, respectively. Incidentally, in general, R01, R
02> Rg, and R1 and R2 << Rg.
【００５０】ここで、１次コアＫ１で発生した磁束が、
２次コアＫ２に可能な限り多く鎖交していることが望ま
しい。各磁気抵抗は、磁路の長さに比例し、断面積に反
比例する。従って、各コアの断面積を小さくすると磁気
抵抗Ｒ１，Ｒ２はそれに比例して増加するが、Ｒ１，Ｒ
２≪Ｒｇの関係に影響を与えるほどではない。Here, the magnetic flux generated in the primary core K1 is
It is desirable that the secondary core K2 has as many chains as possible. Each magnetic resistance is proportional to the length of the magnetic path and inversely proportional to the cross-sectional area. Therefore, if the cross-sectional area of each core is reduced, the magnetic resistances R1 and R2 increase in proportion to that, but R1 and R2
It does not affect the relationship of 2 << Rg.
【００５１】一方、磁気抵抗Ｒｇは、図１０に示すよう
に、対向部のギャップ長ｌに比例し、対向部空間の断面
積Ｓ’に反比例する。また、対向部空間の断面積Ｓ’
は、各コアの対向面の面積Ｓに比例する。従って、磁気
抵抗Ｒｇは、ほぼコア対向面の面積Ｓとギャップ長ｌと
によって決定されるので、コア対向面の面積Ｓが縮小さ
れなければ、磁気抵抗Ｒｇが増加することはない。On the other hand, as shown in FIG. 10, the magnetic resistance Rg is proportional to the gap length l of the facing portion and inversely proportional to the cross-sectional area S'of the facing portion space. Also, the cross-sectional area S'of the facing space
Is proportional to the area S of the facing surface of each core. Therefore, since the magnetic resistance Rg is substantially determined by the area S of the core facing surface and the gap length l, the magnetic resistance Rg does not increase unless the area S of the core facing surface is reduced.
【００５２】以上より、図７に示すように、対向部Ｋ１
３，Ｋ２３を各コアの脚部Ｋ１１，Ｋ２１の先端に形成
し、コアの対向面積を図８と同等に維持することによ
り、漏れ磁束が増大することなく、他のコア磁路部、す
なわち脚部Ｋ１１，Ｋ２１を薄形化し、橋渡し部Ｋ１
２，Ｋ２２を細く形成して、コアの小型化を図ることが
できる。From the above, as shown in FIG. 7, the facing portion K1
By forming K3 and K23 at the tips of the leg portions K11 and K21 of each core and maintaining the facing areas of the cores equal to those in FIG. 8, the leakage magnetic flux does not increase and other core magnetic path portions, that is, the leg portions. The parts K11 and K21 are made thinner, and the bridging part K1
The cores 2 and K22 can be made smaller by forming the K2 and K22 thinner.
【００５３】なお、図１１に示すように、脚部Ｋ１１，
Ｋ２１を、橋渡し部Ｋ１２，Ｋ２２と同様に細く形成す
ると、更にコアの小型化を図ることができる。この場合
でも、対向部Ｋ１３，Ｋ２３によってコアの対向面積が
図８と同等に維持されているので、漏れ磁束の増加はほ
とんどない。As shown in FIG. 11, the leg portions K11,
If K21 is formed thin like the bridging portions K12 and K22, the core can be further miniaturized. Even in this case, since the facing area of the core is maintained to be equal to that in FIG. 8 by the facing portions K13 and K23, the leakage flux hardly increases.
【００５４】また、図１２に示すように、２次側の脚部
Ｋ２１及び橋渡し部Ｋ２２を細く形成し、または、図１
３に示すように、細く形成された橋渡し部Ｋ２２と脚部
先端となる対向部Ｋ２３とで２次コアＫ２を構成して、
２次コアＫ２のみを小型化してもよい。通常、２次側の
負荷部は、小型化が強く要求される電気機器を構成する
ので、図１２、図１３に示すような構成が有効である。Further, as shown in FIG. 12, the leg portion K21 and the bridging portion K22 on the secondary side are thinly formed, or, as shown in FIG.
As shown in FIG. 3, the bridging portion K22 that is thinly formed and the facing portion K23 that is the tip of the leg portion constitute the secondary core K2,
Only the secondary core K2 may be downsized. Usually, the load section on the secondary side constitutes an electric device which is strongly required to be downsized, and therefore the configurations shown in FIGS. 12 and 13 are effective.
【００５５】なお、図１１の対向部Ｋ１３，Ｋ２３は、
図１４に示すように、それぞれ脚部Ｋ１１，Ｋ２１と分
離した別体として形成し、両脚部Ｋ１１の先端にそれぞ
れ対向部Ｋ１３を、両脚部Ｋ２１の先端にそれぞれ対向
部Ｋ２３を当接して、１次コアＫ１及び２次コアＫ２を
構成してもよい。The opposing portions K13 and K23 shown in FIG.
As shown in FIG. 14, the leg portions K11 and K21 are formed separately from each other, and the tip portions of both leg portions K11 are brought into contact with the facing portion K13, and the tip portions of both leg portions K21 are brought into contact with the facing portion K23, respectively. The secondary core K1 and the secondary core K2 may be configured.
【００５６】このように、別体として形成した脚部Ｋ１
１と対向部Ｋ１３、脚部Ｋ２１と対向部Ｋ２３を当接し
てコアを構成した場合、図１５に示すように、ギャップ
長をｌ1、対向部Ｋ１３と脚部Ｋ１１及び対向部Ｋ２３
と脚部Ｋ２１の当接に伴う隙間寸法をそれぞれｌ2，ｌ3
とすると、ｌ1≫ｌ2，ｌ3になるので、全体の磁気抵抗
は、ほぼギャップ長ｌ1のみで決定される。The leg portion K1 formed as a separate body in this way
When the core is formed by abutting the 1 and the facing portion K13 and the leg portion K21 and the facing portion K23, as shown in FIG. 15, the gap length is l 1 , the facing portion K13, the leg portion K11 and the facing portion K23.
And the clearance between the leg K21 and the leg K21 are respectively set to l 2 , l 3
Then, l 1 >> l 2 and l 3 , so that the overall magnetic resistance is determined only by the gap length l 1 .
【００５７】従って、図７や図１１で示した一体構成の
場合と、磁気的特性をほとんど同一にすることができる
ので、漏れ磁束を低減しつつ、コアの小型化が図れる。
また、一体構成の場合よりもコア成形の製造が容易にな
る。また、当接前の状態でコイルボビンをコアに挿入す
ることができるので、コイルボビンを用いることもでき
る。Therefore, since the magnetic characteristics can be made almost the same as in the case of the integrated structure shown in FIGS. 7 and 11, the leakage flux can be reduced and the core can be downsized.
Further, the core molding is easier to manufacture than the case of the integral structure. In addition, since the coil bobbin can be inserted into the core before the contact, the coil bobbin can be used.
【００５８】図１６は磁気結合部分の第７実施例を示す
構成図、図１７は同断面図である。第７実施例では、各
コアの対向部Ｋ１３，Ｋ２３を、電源部１０及び負荷部
１１の筐体１０１，１１１内に埋設している。この構成
により、図１７に示すように、筐体１０１，１１１によ
って、各コアが保持され、各コアの対向部Ｋ１３，Ｋ２
３間のギャップ長が設定される。また、対向部Ｋ１３，
Ｋ２３を筐体１０１，１１１内に埋設することにより、
装置の小型化が図れる。また、図１４に示したように対
向部Ｋ１３，Ｋ２３を別体で形成する場合は、対向部Ｋ
１３，Ｋ２３を、筐体１０１，１１１に同時成型等で一
体に構成することができる。従って、製造工程を簡略化
できる。FIG. 16 is a structural view showing a seventh embodiment of the magnetic coupling portion, and FIG. 17 is a sectional view of the same. In the seventh embodiment, the facing portions K13 and K23 of each core are embedded in the housings 101 and 111 of the power supply unit 10 and the load unit 11. With this configuration, as shown in FIG. 17, the cores are held by the casings 101 and 111, and the facing portions K13 and K2 of the cores are held.
The gap length between 3 is set. In addition, the facing portion K13,
By embedding K23 in the housings 101 and 111,
The size of the device can be reduced. When the facing portions K13 and K23 are separately formed as shown in FIG. 14, the facing portion K
13, K23 can be integrally formed in the housings 101, 111 by simultaneous molding or the like. Therefore, the manufacturing process can be simplified.
【００５９】図１８、図１９は磁気結合部分の第８実施
例を示す構成図で、図１８はコ字状の２次コアＫ２、図
１９はＩ字状の２次コアＫ２を示している。図２０、図
２１は図１８、図１９の断面図である。第８実施例で
は、２次コアＫ２の対向部Ｋ２３を電子部品Ａなどが搭
載されたプリント基板Ｐ２上の導電材からなるパターン
で、２次巻線Ｌ２を磁性材からなるパターンで形成して
いる。なお、１次コアも同様に構成されているが図略し
ている。18 and 19 are configuration diagrams showing an eighth embodiment of the magnetic coupling portion. FIG. 18 shows a U-shaped secondary core K2, and FIG. 19 shows an I-shaped secondary core K2. . 20 and 21 are cross-sectional views of FIGS. 18 and 19. In the eighth embodiment, the facing portion K23 of the secondary core K2 is formed by a pattern made of a conductive material on the printed circuit board P2 on which the electronic component A and the like are mounted, and the secondary winding L2 is formed by a pattern made of a magnetic material. There is. The primary core has the same structure but is not shown.
【００６０】一般に、１次側及び２次側は、それぞれ給
電制御のための発振回路や整流回路の電子回路部品を搭
載したプリント基板が配設されていることから、このプ
リント基板を利用して各巻線Ｌ１，Ｌ２や対向部Ｋ２３
と電子回路を一体的に構成し、スペース効率を向上して
いる。Generally, a printed circuit board on which electronic circuit components such as an oscillation circuit and a rectifier circuit for power supply control are mounted is arranged on the primary side and the secondary side. Each winding L1, L2 and the facing portion K23
And the electronic circuit are integrated to improve space efficiency.
【００６１】本実施例では、図１８、図１９の断面図に
示すように、コアの形状に関わりなく、各巻線Ｌ１，Ｌ
２や対向部Ｋ２３と電子回路とを一体的に構成すること
ができる。In this embodiment, as shown in the sectional views of FIGS. 18 and 19, the windings L1 and L are irrespective of the shape of the core.
2 and the facing portion K23 and the electronic circuit can be integrally configured.
【００６２】なお、上記各実施例において、給電装置
は、負荷部１１が２次電池を備え、電源部１０によって
充電されるものでも、負荷部１１がモータ等の負荷を備
え、電源部１０から電力が供給されるものでも、電源部
１０と負荷部１１とが別体で構成され、電磁誘導によっ
て電源部１０から負荷部１１に電力が伝達されるもので
あれば、同様の効果が得られる。In each of the above-mentioned embodiments, even if the load unit 11 of the power supply device is equipped with a secondary battery and is charged by the power supply unit 10, the load unit 11 is equipped with a load such as a motor and the like. Even if power is supplied, the same effect can be obtained as long as the power supply unit 10 and the load unit 11 are configured separately and the power is transmitted from the power supply unit 10 to the load unit 11 by electromagnetic induction. .
【００６３】また、上記各実施例において、給電装置
は、１次コアＫ１と２次コアＫ２とで構成されるものに
ついて説明したが、３次以上の多次で構成されるもので
も、同様の効果が得られる。Further, in each of the above-described embodiments, the power supply device has been described as having the primary core K1 and the secondary core K2, but the same applies to a power supply device having a tertiary or higher order. The effect is obtained.
【００６４】また、上記各実施例において、各コアは、
コ字型の形状のものを用いて説明したが、Ｕ字型やＥ字
型等のように、対向面に先端部を有する構成であれば、
同様の効果が得られる。In each of the above embodiments, each core is
Although the description has been made using the U-shaped one, if it is a configuration having a tip portion on the facing surface such as a U-shaped or E-shaped,
The same effect can be obtained.
【００６５】[0065]
【発明の効果】以上説明したように、請求項１の発明に
よれば、少なくとも１次巻線を１次コアの両脚部に直列
接続されるように巻回するようにしたので、漏れ磁束を
低減し、結合係数を増加できる。従って、伝達効率の向
上が図れるとともに、各コアに近接して電子回路部品を
配置することが可能となり、装置の小型化が図れる。As described above, according to the first aspect of the present invention, since at least the primary winding is wound so as to be connected in series to both legs of the primary core, the leakage flux is prevented. It can be reduced and the coupling coefficient can be increased. Therefore, the transmission efficiency can be improved, and the electronic circuit parts can be arranged close to each core, and the size of the device can be reduced.
【００６６】また、請求項２の発明によれば、１次巻線
及び２次巻線をプリント基板上の導電材からなるパター
ンで形成するようにしたので、漏れ磁束を低減できると
ともに、プリント基板を各巻線と他の電子部品実装と共
用化できるため、装置の小型化が実現できる。According to the second aspect of the invention, since the primary winding and the secondary winding are formed of a pattern made of a conductive material on the printed circuit board, the leakage flux can be reduced and the printed circuit board can be reduced. Since each winding can be shared with other windings of electronic components, the device can be downsized.
【００６７】また、請求項３の発明によれば、１次コア
の脚部に帰還巻線を巻回するようにしたので、１次巻線
と帰還巻線との磁気結合を向上できる。According to the third aspect of the invention, since the feedback winding is wound around the leg of the primary core, the magnetic coupling between the primary winding and the feedback winding can be improved.
【００６８】また、請求項４の発明によれば、プリント
基板は、孔を介して１次コアに貫通され、かつ、基板面
上には孔を中心に導電材からなる螺旋状のパターンを有
する帰還巻線を形成するようにしたので、プリント基板
を帰還巻線と他の電子部品実装と共用化できるため、装
置の小型化が実現できる。Further, according to the invention of claim 4, the printed circuit board has a spiral pattern made of a conductive material with the hole centered on the surface of the printed circuit board and penetrating the primary core through the hole. Since the feedback winding is formed, the printed wiring board can be shared with the feedback winding and mounting of other electronic components, and the device can be downsized.
【００６９】また、請求項５の発明によれば、１次コア
及び２次コアは、それぞれ対向部の断面積が相対的に大
きくなるように形成したので、漏れ磁束を低減できると
ともに、対向部以外の小型化が図れることから、装置の
小型化が実現できる。Further, according to the invention of claim 5, since the primary core and the secondary core are formed such that the cross-sectional areas of the facing portions are relatively large, the leakage flux can be reduced and the facing portions can be reduced. Other devices can be miniaturized, so that the device can be miniaturized.
【００７０】また、請求項６の発明によれば、２次コア
は、対向部の断面積が相対的に大きくなるように形成し
たので、漏れ磁束を低減できるとともに、対向部以外の
小型化が図れることから、負荷部の小型化が実現でき
る。Further, according to the invention of claim 6, since the secondary core is formed so that the cross-sectional area of the facing portion is relatively large, the leakage magnetic flux can be reduced and the size other than the facing portion can be reduced. As a result, the load section can be downsized.
【００７１】また、請求項７の発明によれば、１次コア
及び２次コアは、それぞれ対向部を別体で形成するよう
にしたので、各コアの製造が容易になる。また、対向部
の断面積が相対的に大きい場合でも、巻線が巻回された
コイルボビンを脚部に配設することができる。According to the seventh aspect of the present invention, since the facing portions of the primary core and the secondary core are formed separately, the manufacturing of each core becomes easy. Further, even when the cross-sectional area of the facing portion is relatively large, the coil bobbin around which the winding wire is wound can be arranged on the leg portion.
【００７２】また、請求項８の発明によれば、１次コア
の対向部を第１の筐体に埋設し、２次コアの対向部を第
２の筐体に埋設するようにしたので、対向部間のギャッ
プ長を一定にできる。また、埋設した分だけ装置の小型
化が図れる。また、一体成形することにより、製造工程
の簡略化が図れる。Further, according to the invention of claim 8, the facing portion of the primary core is embedded in the first casing, and the facing portion of the secondary core is embedded in the second casing. The gap length between the facing portions can be made constant. Further, the device can be downsized by the amount of the buried portion. In addition, the integral molding can simplify the manufacturing process.
【００７３】また、請求項９の発明によれば、２次コア
の対向部をプリント基板上の磁性材からなるパターンで
形成するようにしたので、プリント基板を他の電子部品
実装と共用化できるため、装置の小型化が実現できる。According to the ninth aspect of the invention, since the facing portion of the secondary core is formed with the pattern made of the magnetic material on the printed board, the printed board can be shared with other electronic component mounting. Therefore, downsizing of the device can be realized.
【図１】本発明に係る給電装置の磁気結合部分の第１実
施例を示す構成図である。FIG. 1 is a configuration diagram showing a first embodiment of a magnetic coupling portion of a power feeding device according to the present invention.
【図２】磁力線の分布を示す説明図である。FIG. 2 is an explanatory diagram showing a distribution of magnetic force lines.
【図３】本発明に係る給電装置の磁気結合部分の第２実
施例を示す構成図である。FIG. 3 is a configuration diagram showing a second embodiment of the magnetic coupling portion of the power feeding device according to the present invention.
【図４】本発明に係る給電装置の磁気結合部分の第３実
施例を示す構成図である。FIG. 4 is a configuration diagram showing a third embodiment of the magnetic coupling portion of the power feeding device according to the present invention.
【図５】本発明に係る給電装置の磁気結合部分の第４実
施例を示す構成図である。FIG. 5 is a configuration diagram showing a fourth embodiment of the magnetic coupling portion of the power feeding device according to the present invention.
【図６】本発明に係る給電装置の磁気結合部分の第５実
施例を示す構成図である。FIG. 6 is a configuration diagram showing a fifth embodiment of the magnetic coupling portion of the power feeding device according to the present invention.
【図７】本発明に係る給電装置の磁気結合部分の第６実
施例を示す構成図である。FIG. 7 is a configuration diagram showing a sixth embodiment of the magnetic coupling portion of the power feeding device according to the present invention.
【図８】１次コアＫ１及び２次コアＫ２を示す構成図で
ある。FIG. 8 is a configuration diagram showing a primary core K1 and a secondary core K2.
【図９】図８の磁気的な等価回路を示す説明図である。9 is an explanatory diagram showing a magnetic equivalent circuit of FIG. 8. FIG.
【図１０】磁気抵抗の説明図である。FIG. 10 is an explanatory diagram of a magnetic resistance.
【図１１】第６実施例の変形例を示す構成図である。FIG. 11 is a configuration diagram showing a modification of the sixth embodiment.
【図１２】第６実施例の別の変形例を示す構成図であ
る。FIG. 12 is a configuration diagram showing another modification of the sixth embodiment.
【図１３】第６実施例の別の変形例を示す構成図であ
る。FIG. 13 is a configuration diagram showing another modification of the sixth embodiment.
【図１４】第６実施例の別の変形例を示す構成図であ
る。FIG. 14 is a configuration diagram showing another modification of the sixth embodiment.
【図１５】図１４の磁気抵抗の説明図である。15 is an explanatory diagram of the magnetic resistance of FIG.
【図１６】本発明に係る給電装置の磁気結合部分の第７
実施例を示す構成図である。FIG. 16 is a seventh magnetic coupling portion of the power feeding device according to the present invention.
It is a block diagram which shows an Example.
【図１７】第７実施例の各コアの構成を示す断面図であ
る。FIG. 17 is a cross-sectional view showing the structure of each core of the seventh embodiment.
【図１８】本発明に係る給電装置の磁気結合部分の第８
実施例を示す構成図で、コ字状のコアを示している。FIG. 18 is the eighth magnetic coupling portion of the power feeding device according to the present invention.
It is a block diagram which shows an Example, and has shown the U-shaped core.
【図１９】本発明に係る給電装置の磁気結合部分の第８
実施例を示す構成図で、Ｉ字状のコアを示している。FIG. 19 is the eighth magnetic coupling portion of the power feeding device according to the present invention.
It is a block diagram which shows an Example, and has shown the I-shaped core.
【図２０】図１８の断面図である。20 is a cross-sectional view of FIG.
【図２１】図１９の断面図である。21 is a cross-sectional view of FIG.
【図２２】従来のインバータ電源回路の回路図である。FIG. 22 is a circuit diagram of a conventional inverter power supply circuit.
【図２３】同電源回路の波形図である。FIG. 23 is a waveform diagram of the power supply circuit.
【図２４】同電源回路が適用される従来の給電装置の構
成例を示すブロック図である。FIG. 24 is a block diagram showing a configuration example of a conventional power supply device to which the power supply circuit is applied.
【図２５】図２４の給電装置の磁力線の分布を示す説明
図である。FIG. 25 is an explanatory diagram showing a distribution of magnetic force lines of the power feeding device of FIG. 24.
１０ 電源部 １１ 負荷部 Ａ 電子部品 Ｋ１ １次コア Ｋ２ ２次コア Ｋ１１，Ｋ２１ 脚部 Ｋ１２，Ｋ２２ 橋渡し部 Ｋ１３，Ｋ２３ 対向部 Ｌ１ １次巻線 Ｌ２ ２次巻線 Ｌ３ 帰還巻線 Ｐ１，Ｐ２ プリント基板 10 power supply section 11 load section A electronic part K1 primary core K2 secondary core K11, K21 legs K12, K22 bridging section K13, K23 facing section L1 primary winding L2 secondary winding L3 feedback winding P1, P2 print substrate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平田 勝弘 大阪府門真市大字門真1048番地 松下電工 株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Katsuhiro Hirata 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.
Claims (9)
電源部と、２次巻線が巻回された２次コアを有する負荷
部とがそれぞれ分離独立して形成されてなり、上記電源
部に上記負荷部を装着することにより上記１次コアの両
端面と上記２次コアの両端面とが互いに対向して磁気結
合する給電装置において、上記１次コア及び上記２次コ
アは、それぞれ一対の脚部とその間の橋渡し部とからな
り、上記装着時に各コアの脚部両端面の対向部が互いに
対向する位置に設けられており、少なくとも上記１次巻
線は、上記１次コアの両脚部に直列接続されるように巻
回されていることを特徴とする給電装置。1. A power supply section having a primary core around which a primary winding is wound and a load section having a secondary core around which a secondary winding is wound are formed independently of each other. A power supply unit in which both end faces of the primary core and both end faces of the secondary core are magnetically coupled to each other by mounting the load unit on the power supply unit, the primary core and the secondary core being provided. Each of which is composed of a pair of leg portions and a bridging portion between them, and is provided at a position where the opposing portions of both end surfaces of the leg portions of each core face each other at the time of mounting, and at least the primary winding is A power feeding device, which is wound so as to be connected in series to both legs of the next core.
ント基板上の導電材からなるパターンで形成されている
ことを特徴とする請求項１記載の給電装置。2. The power supply device according to claim 1, wherein the primary winding and the secondary winding are formed of a pattern made of a conductive material on a printed circuit board.
回されていることを特徴とする請求項１記載の給電装
置。3. The power supply device according to claim 1, wherein a feedback winding is wound around the leg of the primary core.
穿設されたプリント基板を備え、上記プリント基板は、
上記孔を介して上記１次コアに貫通され、かつ、基板面
上には上記孔を中心に導電材からなる螺旋状のパターン
を有する帰還巻線が形成されていることを特徴とする給
電装置。4. The power supply device according to claim 1, further comprising a printed circuit board having holes formed therein, wherein the printed circuit board comprises:
A power feeding device characterized in that a feedback winding is formed through the hole through the primary core and has a spiral pattern made of a conductive material around the hole on the substrate surface. .
ぞれ上記対向部の断面積が相対的に大きく形成されてい
ることを特徴とする請求項１記載の給電装置。5. The power supply device according to claim 1, wherein the primary core and the secondary core are formed such that the cross-sectional areas of the facing portions are relatively large.
相対的に大きく形成されていることを特徴とする請求項
１記載の給電装置。6. The power feeding device according to claim 1, wherein the secondary core is formed such that a cross-sectional area of the facing portion is relatively large.
ぞれ上記対向部が別体で形成されていることを特徴とす
る請求項１記載の給電装置。7. The power feeding device according to claim 1, wherein the opposing portions of the primary core and the secondary core are formed separately.
電源部を収納する第１の筐体と、上記負荷部を収納する
第２の筐体とを備え、上記１次コアは、上記対向部が上
記第１の筐体に埋設され、上記２次コアは、上記対向部
が上記第２の筐体に埋設されていることを特徴とする給
電装置。8. The power supply device according to claim 1, further comprising: a first housing that houses the power supply unit, and a second housing that houses the load unit, wherein the primary core is opposed to the first housing. The power feeding device is characterized in that a portion is embedded in the first casing, and the secondary core has the facing portion embedded in the second casing.
基板上の磁性材からなるパターンで形成されていること
を特徴とする請求項１記載の給電装置。9. The power feeding device according to claim 1, wherein the opposing portion of the secondary core is formed in a pattern made of a magnetic material on a printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6174031A JPH0837121A (en) | 1994-07-26 | 1994-07-26 | Power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6174031A JPH0837121A (en) | 1994-07-26 | 1994-07-26 | Power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0837121A true JPH0837121A (en) | 1996-02-06 |
Family
ID=15971427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6174031A Pending JPH0837121A (en) | 1994-07-26 | 1994-07-26 | Power supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0837121A (en) |
Cited By (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940903A3 (en) * | 1998-03-02 | 2000-11-08 | Polar Electro Oy | Charging method and charging arrangement |
| WO2010032116A1 (en) * | 2008-09-22 | 2010-03-25 | Panasonic Electric Works Co. Ltd. | Contactless power supply system |
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-
1994
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| JP2011045467A (en) * | 2009-08-26 | 2011-03-10 | Panasonic Electric Works Co Ltd | Play facility |
| JPWO2012029179A1 (en) * | 2010-09-03 | 2013-10-28 | 富士通株式会社 | Wireless power transmission device |
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