JPH06311659A - Miniature electric appliance - Google Patents
Miniature electric applianceInfo
- Publication number
- JPH06311659A JPH06311659A JP5119053A JP11905393A JPH06311659A JP H06311659 A JPH06311659 A JP H06311659A JP 5119053 A JP5119053 A JP 5119053A JP 11905393 A JP11905393 A JP 11905393A JP H06311659 A JPH06311659 A JP H06311659A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- main body
- foreign matter
- contact surface
- supply body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は充電装置、電動歯ブラ
シあるいは電動工具の様な各種の小型電気機器であっ
て、特に電力を供給する電源本体と負荷を備えた機器本
体とを互いに分離可能に構成するとともに、両者間で電
磁誘導結合を利用して電力を受け渡し可能とするものに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various small electric devices such as a charging device, an electric toothbrush or an electric tool, and in particular, a power supply main body for supplying electric power and an equipment main body having a load can be separated from each other. The present invention relates to a device which is configured and is capable of transferring electric power between the two by utilizing electromagnetic induction coupling.
【0002】[0002]
【従来の技術】従来この種の小型電気機器は、機器本体
側に二次電池を備え、常時は電源本体側に機器本体を装
着して微小電流で二次電池の充電状態を持続しながら、
機器本体単独による短時間の負荷駆動に備えるものが一
般的であった。したがって、電源本体に備えたインバー
タ回路の様な一次側発振部を常に駆動状態とする一方、
機器本体が長時間に亘って電源本体から取り外された時
の省電力を専ら図る目的で、負荷の有無に対応させて一
次側発振部の出力を制御することも行なわれている。2. Description of the Related Art Conventionally, a small electric device of this type is provided with a secondary battery on the device body side, and the device body is always mounted on the power source body side to maintain a charged state of the secondary battery with a small current,
It was general to prepare for load driving for a short time by the device body alone. Therefore, while the primary side oscillation unit such as the inverter circuit provided in the power supply body is always in the drive state,
For the purpose of exclusively saving power when the device body is removed from the power supply body for a long time, the output of the primary side oscillating section is also controlled depending on the presence or absence of a load.
【0003】[0003]
【発明が解決しようとする課題】しかしながら上記構成
にあっては、電源本体側に備えた一次側発振部から出力
可能な電力を増大させた場合、機器本体に代えてクリッ
プの様な金属片を一次コイルに接近して配置しても、こ
の金属片を適正な負荷と誤認して過大な渦電流を流して
発熱させる虞れがあることが判った。However, in the above configuration, when the power that can be output from the primary side oscillating section provided on the power supply main body side is increased, a metal piece such as a clip is used instead of the device main body. It has been found that even if the metal piece is placed close to the primary coil, the metal piece may be mistaken for a proper load and an excessive eddy current may flow to generate heat.
【0004】本発明者等はかかる不都合に鑑みて考察を
行った結果、電源本体内の一次側発振部を常時駆動状態
を維持して待機状態にしておいても、電源本体側の周面
位置の形状を、機器本体とは異なる物が乗り難くいか、
たとえ無理に乗せても直ちに除去させる様に構成するこ
とにより、上記した不都合が一挙に解消することを知見
した。As a result of consideration made in view of such inconvenience, the present inventors have found that even if the primary side oscillating portion in the power source body is kept in a standby state while always being driven, the peripheral surface position on the power source body side is Is it difficult to ride something different from the main body of the device?
It has been found that the above-mentioned inconveniences can be solved all at once by constructing such a configuration that even if it is forcibly placed, it is immediately removed.
【0005】本発明は上記した知見に基づいてなされた
ものであって、電源本体に接近して配置された異物を機
器本体と誤認する発熱事故を未然に防止できる小型電気
機器を提供することを目的とする。The present invention has been made on the basis of the above-mentioned findings, and it is an object of the present invention to provide a small electric device capable of preventing a heat generation accident in which a foreign substance placed close to a power supply main body is mistakenly recognized as a device main body. To aim.
【0006】[0006]
【課題を解決するための手段】本発明にかかる小型電気
機器は、図1にその全体的な構成を概略的に示す如く、
インバータ回路の様な一次側発振部10を備えた電源本
体12に対し、その一次側発振部10の一次コイル14
と電磁誘導結合される出力コイル16を介して給電され
る二次電池の様な負荷18を備えた機器本体20を、着
脱自在に装着可能としたものである。A small electric device according to the present invention has a general structure as shown in FIG.
For the power supply main body 12 including the primary side oscillating section 10 such as an inverter circuit, the primary coil 14 of the primary side oscillating section 10 is provided.
A device main body 20 having a load 18 such as a secondary battery, which is supplied with power via an output coil 16 electromagnetically coupled with, is detachably mountable.
【0007】かかる構成において、上記した電源本体1
2側の当接面22に、機器本体20とは異なる物を当接
面22上から除去可能とする手段26を備えたことを特
徴とする。In such a structure, the power source body 1 described above
It is characterized in that the contact surface 22 on the second side is provided with a means 26 for allowing an object different from the device body 20 to be removed from the contact surface 22.
【0008】上記した除去手段26としては、図2に例
示する如く、電源本体12側の当接面22の略全面に亘
って形成された突状部28により構成することができ
る。また、上記した一次コイル14と出力コイル16は
コア30・32を個別に備え、コア30・32の両端面
90・92を、電源本体12と機器本体20の当接面2
2・24上に互いに離間して配設することが好ましい。As shown in FIG. 2, the above-mentioned removing means 26 can be constituted by a protruding portion 28 formed over substantially the entire contact surface 22 on the power source body 12 side. Further, the primary coil 14 and the output coil 16 described above are individually provided with the cores 30 and 32, and the both end surfaces 90 and 92 of the cores 30 and 32 are connected to the contact surface 2 of the power source body 12 and the device body 20.
It is preferable to dispose them separately from each other on 2 · 24.
【0009】[0009]
【作用】上記の如く、電源本体12側の当接面22上に
金属片の様な異物を乗せると、当接面22上に形成され
た突状部28の様な受動的な構成、あるいは揺動機構の
様な能動的な構成を備えた異物の除去手段26が働き、
異物を当接面22上から滑り落とす。As described above, when a foreign object such as a metal piece is placed on the contact surface 22 on the power source body 12 side, a passive structure such as a protrusion 28 formed on the contact surface 22 or The foreign matter removing means 26 having an active structure such as a rocking mechanism works,
The foreign matter is slid off from the contact surface 22.
【0010】一方、電源本体12に対して機器本体20
を当接面22・24を介して装着すると、電源本体12
側の除去手段26は機器本体20を有効に判断し、一次
コイル14と出力コイル16は適正に結合されて電源本
体12側から機器本体20側の負荷18に対して必要な
給電を行なうのである。On the other hand, the main body 20 of the device is different from the main body 12 of the power supply.
Is attached via the contact surfaces 22 and 24, the power supply body 12
The removal means 26 on the side effectively determines the device body 20, and the primary coil 14 and the output coil 16 are properly coupled to each other to supply the necessary power from the power supply body 12 side to the load 18 on the device body 20 side. .
【0011】[0011]
【発明の効果】本発明は上記の如く、電源本体12側の
当接面22上に異物の除去手段26を備えたので、金属
片の様な異物を誤って電源本体12側に乗せても、その
異物は直ちに当接面22上から滑り落とされ、異物に磁
界を流して発熱させることを未然に防止できる。As described above, according to the present invention, since the foreign matter removing means 26 is provided on the contact surface 22 on the power source body 12 side, even if a foreign matter such as a metal piece is accidentally placed on the power source body 12 side. The foreign matter is immediately slid off from the contact surface 22, and it is possible to prevent the foreign matter from flowing a magnetic field to generate heat.
【0012】[0012]
【実施例】以下本発明を、図2〜図4に示す二次電池の
充電装置に実施した一例を示すがこれに限らず、電動歯
ブラシや電動工具など各種の小型電気機器に対しても略
同様に実施できることは勿論である。EXAMPLE An example in which the present invention is applied to the rechargeable battery charging device shown in FIGS. 2 to 4 is shown below, but the present invention is not limited to this, and it is also applicable to various small electric devices such as electric toothbrushes and electric tools. Of course, the same can be done.
【0013】本発明を実施する充電装置は、図2にその
全体的な構成を示す如く、インバータ式の電源本体12
と、その電源本体12に対してその下端が着脱自在に嵌
まり、電源本体12から電磁誘導結合を利用して送られ
る充電電流を用いて内部の二次電池34を充電可能とす
る機器本体20とから構成される。The charging device embodying the present invention has an inverter type power supply main body 12 as shown in FIG.
And the lower end of which is detachably fitted to the power supply main body 12, and the secondary battery 34 inside can be charged by using the charging current sent from the power supply main body 12 using electromagnetic induction coupling. Composed of and.
【0014】充電装置を構成する電気回路は、図4にそ
の構成を具体的に例示する如く、電源本体12の本体ケ
ース36から外部に向けて伸びる電源プラグ38を介し
て入力された商用交流電源40を、保護回路42を介し
てインバータ回路11に接続する。The electric circuit constituting the charging device has a commercial AC power source input through a power source plug 38 extending from the main body case 36 of the power source main body 12 to the outside, as specifically illustrated in FIG. 40 is connected to the inverter circuit 11 via the protection circuit 42.
【0015】保護回路42は、インバータ回路11に対
する給電ラインと直列に接続された金属皮膜抵抗44に
より大電流の入力を阻止する一方、並列に接続された過
電圧吸収素子46によりサージ電圧の入力を防止する。
更に整流器48により入力電圧を整流した後、温度ヒュ
ーズ50によって過熱時におけるインバータ回路11の
動作を強制的に停止可能とし、またコンデンサ52によ
りインバータ回路11側からのノイズの流出を阻止する
様にしている。The protection circuit 42 blocks the input of a large current by the metal film resistor 44 connected in series with the power supply line to the inverter circuit 11, while preventing the input of the surge voltage by the overvoltage absorbing element 46 connected in parallel. To do.
Further, after the input voltage is rectified by the rectifier 48, the operation of the inverter circuit 11 at the time of overheating can be forcibly stopped by the temperature fuse 50, and the outflow of noise from the inverter circuit 11 side is prevented by the capacitor 52. There is.
【0016】インバータ回路11は、スイッチング用ト
ランジスタ54のコレクタ側に一次コイル14を、エミ
ッタ側に保護用抵抗56を各々介装するとともに、ベー
ス側に出力制御部58と出力制限部60とを備えてい
る。The inverter circuit 11 includes a primary coil 14 on the collector side of the switching transistor 54, a protective resistor 56 on the emitter side, and an output control section 58 and an output limiting section 60 on the base side. ing.
【0017】出力制御部58は、抵抗62、コンデンサ
64および帰還コイル66を直列接続したものであっ
て、抵抗62およびコンデンサ64の充放電時定数によ
りスイッチング用トランジスタ54のオンオフ周期を例
えば40kHz程度に規制する一方、帰還コイル66お
よびコンデンサ64でスイッチング用トランジスタ54
のオン時間を規制する様にしている。The output control unit 58 is composed of a resistor 62, a capacitor 64 and a feedback coil 66 connected in series. The on / off cycle of the switching transistor 54 is set to, for example, about 40 kHz depending on the charging / discharging time constant of the resistor 62 and the capacitor 64. While regulating, the feedback coil 66 and the capacitor 64 make the switching transistor 54
The on-time of is regulated.
【0018】すなわち、抵抗62を介してコンデンサ6
4が充電され、スイッチング用トランジスタ54のベー
ス電圧が設定値を超えると、一次コイル14にコレクタ
電流が流れ始め、かかるコレクタ電流の増加が帰還コイ
ル66におけるトランジスタ54をオンする方向への電
圧を発生させ、トランジスタ54を急激にオンさせる。
トランジスタ54のオン後、コンデンサ64の充放電が
すすみ、ベース電流が減少することによって帰還コイル
66から出力される電圧の方向が反転し、トランジスタ
54のベース・エミッタ間に逆バイアスを加えてトラン
ジスタ54を急激にオフする。上記したトランジスタ5
4のオンオフ動作を繰り返すことにより、インバータ回
路11は所定周波数による自励発振を行う。That is, the capacitor 6 is connected via the resistor 62.
4 is charged, and when the base voltage of the switching transistor 54 exceeds a set value, collector current begins to flow in the primary coil 14, and the increase in the collector current generates a voltage in a direction to turn on the transistor 54 in the feedback coil 66. Then, the transistor 54 is rapidly turned on.
After the transistor 54 is turned on, charging and discharging of the capacitor 64 progresses, and the base current decreases, so that the direction of the voltage output from the feedback coil 66 is reversed, and a reverse bias is applied between the base and emitter of the transistor 54 to cause the transistor 54 Turn off rapidly. Transistor 5 mentioned above
By repeating the on / off operation of No. 4, the inverter circuit 11 performs self-excited oscillation at a predetermined frequency.
【0019】なお、一次コイル14と並列に接続された
コンデンサ68は、トランジスタ54のオフ時に発生す
る衝撃電圧を吸収するものである。またトランジスタ5
4のエミッタ側に介装された保護用抵抗56は、コレク
タ電流の増大に対応してトランジスタ54のエミッタ電
位を上昇させることによってトランジスタ54のオフ時
期を規制し、過大な電流がトランジスタ54に流入する
のを防止するものである。The capacitor 68 connected in parallel with the primary coil 14 absorbs a shock voltage generated when the transistor 54 is turned off. Also transistor 5
The protection resistor 56 provided on the emitter side of 4 controls the off time of the transistor 54 by raising the emitter potential of the transistor 54 in response to the increase of the collector current, and an excessive current flows into the transistor 54. It is to prevent it.
【0020】出力制限部60は、前記した帰還コイル6
6と並列にコンデンサ70を接続するとともに、該コン
デンサ70と直列にツエナーダイオード72を接続した
ものである。ここで、帰還コイル66とコンデンサ70
間には、スイッチング用トランジスタ54のオフ期間に
限定して充電を可能とするダイオード74を介装する一
方、ツエナーダイオード72とコンデンサ70間には、
トランジスタ54のオン期間中にベース電圧によりオン
し、コンデンサ70を放電可能な方向にダイオード76
が各々介装されている。The output limiting section 60 includes the feedback coil 6 described above.
A capacitor 70 is connected in parallel with the capacitor 6, and a zener diode 72 is connected in series with the capacitor 70. Here, the feedback coil 66 and the capacitor 70
A diode 74, which enables charging only during the off period of the switching transistor 54, is interposed between the two, and between the Zener diode 72 and the capacitor 70,
During the ON period of the transistor 54, the diode 76 is turned on by the base voltage to allow the capacitor 70 to be discharged.
Are installed respectively.
【0021】従って、トランジスタ54のオフ期間中に
帰還コイル66によって充電されるコンデンサ70の充
電電圧は、一次コイル14と出力コイル16とで構成さ
れるインバータトランスのレギュレーション特性が悪い
ことに起因して、インバータ回路11から取り出される
負荷電流が小さいほど大きくなり、この充電電圧がツエ
ナーダイオード72に対してオンさせる方向にベース電
圧に加算して印加される。その結果、定常の充電中より
低いベース電圧でツエナーダイオード72はオンし、ベ
ース電流を分流してトランジスタ54のオン時間を短縮
し、機器本体20が電源本体12から取り外された無負
荷あるいは軽負荷時におけるインバータ回路11の消費
電力を可及的に制限可能としている。Therefore, the charging voltage of the capacitor 70 charged by the feedback coil 66 during the off period of the transistor 54 is due to the poor regulation characteristic of the inverter transformer composed of the primary coil 14 and the output coil 16. The smaller the load current taken out from the inverter circuit 11, the larger the load current, and this charging voltage is added to the base voltage in the direction of turning on the Zener diode 72 and applied. As a result, the Zener diode 72 is turned on at a base voltage lower than that during steady charging, the base current is shunted to shorten the on time of the transistor 54, and the device body 20 is unloaded or lightly loaded from the power source body 12. The power consumption of the inverter circuit 11 can be limited as much as possible.
【0022】上記の様にしてインバータ回路11で発生
された商用周波数より充分に高い周波数の電力信号は、
一次コイル14と電磁誘導結合された機器本体20側の
出力コイル16で充電電圧にまで降圧されたあと、ダイ
オード78で半波分を選択的に二次電池34に供給して
充電を行う。A power signal of a frequency sufficiently higher than the commercial frequency generated by the inverter circuit 11 as described above is
The output coil 16 on the side of the apparatus body 20 electromagnetically coupled with the primary coil 14 reduces the voltage down to the charging voltage, and then the diode 78 selectively supplies a half-wave to the secondary battery 34 for charging.
【0023】機器本体20は、断面が矩形状の中空な本
体ケース80内の上部に、複数本のニカド電池の様な二
次電池34を収納する一方、本体ケース80内の下部に
二次電池34に所定の充電電流を供給する給電部82を
備える。更に本体ケース80の下端側に、電源本体12
側の当接面22を嵌める受部84を備え、上面側に、二
次電池34からモータの様な外部負荷83に対して給電
するためのプラグ86を備えている。The device main body 20 accommodates a plurality of secondary batteries 34 such as nicad batteries in an upper part of a hollow main body case 80 having a rectangular cross section, and a secondary battery in the lower part of the main body case 80. 34 is provided with a power feeding unit 82 that supplies a predetermined charging current. Further, on the lower end side of the main body case 80, the power supply main body 12
The receiving portion 84 into which the side contact surface 22 is fitted is provided, and the upper surface side is provided with a plug 86 for supplying power from the secondary battery 34 to an external load 83 such as a motor.
【0024】電源本体12に備えるインバータ回路11
の一次コイル14は、本体ケース36内における中央部
分に、その中心軸を長手方向に向けて水平状態で備えた
コイルボビン88上に巻かれている。更にコイルボビン
88の中心を貫通させて、フェライトの様な強磁性体で
形成された細棒状のコア30を伸ばすとともに、そのコ
ア30の両端90・90を、当接面22における長手方
向両端に分離して配置している。Inverter circuit 11 provided in the power supply body 12
The primary coil 14 is wound on a coil bobbin 88 that is provided in a central portion of the main body case 36 in a horizontal state with its central axis oriented in the longitudinal direction. Further, the center of the coil bobbin 88 is penetrated to extend the thin rod-shaped core 30 formed of a ferromagnetic material such as ferrite, and the both ends 90 of the core 30 are separated into both ends in the longitudinal direction of the contact surface 22. Have been arranged.
【0025】一方、機器本体20側の出力コイル16
も、電源本体12側の一次コイル14と略同様な構成で
あって、コア32の両端面92・92を当接面24上に
まで伸ばすとともに、一次コイル14側のコア30の両
端面90・90と配設位置を一致させている。On the other hand, the output coil 16 on the device body 20 side
Also has substantially the same structure as the primary coil 14 on the power supply body 12 side, and extends both end faces 92 of the core 32 up to the contact face 24, and both end faces 90 of the core 30 on the primary coil 14 side. 90 and the arrangement position are matched.
【0026】したがって図3(b)に示す様に、電源本
体12と機器本体20とが当接面22・24を一致させ
て適切に装着されると、電源本体12側と機器本体20
側のコア30・32がその両端面90・92を介して互
いに接合される。その結果、一次コイル14と出力コイ
ル16の間を一周する磁路93が形成されて両コイル1
4・16が適切に電磁誘導結合され、一次コイル14内
の電流変化に対応して所定の電圧が出力コイル16両端
に誘起される。かかる誘起電圧は、インバータ回路11
のスイッチング用トランジスタ54がオフ期間中に発生
する電圧を整流用ダイオード78で選択的に取り出し、
二次電池34に送って充電に利用するのである。Therefore, as shown in FIG. 3B, when the power source main body 12 and the device main body 20 are properly mounted with the contact surfaces 22 and 24 aligned, the power source main body 12 side and the device main body 20 are attached.
The cores 30 and 32 on the side are joined to each other through the end faces 90 and 92 thereof. As a result, the magnetic path 93 that goes around between the primary coil 14 and the output coil 16 is formed, and both coils 1
4 and 16 are appropriately electromagnetically inductively coupled, and a predetermined voltage is induced across the output coil 16 in response to a change in current in the primary coil 14. The induced voltage is applied to the inverter circuit 11
The voltage generated during the off period of the switching transistor 54 is selectively extracted by the rectifying diode 78,
It is sent to the secondary battery 34 and used for charging.
【0027】本発明は上記した構成にあって、電源本体
12と機器本体20間における当接面22・24の構成
にその特徴を有する。The present invention has the above-described structure, and is characterized by the structure of the contact surfaces 22 and 24 between the power supply main body 12 and the device main body 20.
【0028】すなわち図3(a)の如く、電源本体12
側の当接面22における中央部分を上方に向けてなだら
かな円弧状に隆起させ突状部28を形成することによ
り、当接面22上にクリップの様な異物が乗っても、そ
の上から容易に滑り落ちる様な構成としている。That is, as shown in FIG. 3A, the power supply main body 12
Even if a foreign matter such as a clip is placed on the contact surface 22, the central portion of the contact surface 22 on the side is bulged upward in a gentle arc shape to form the protrusion 28. It is designed to slide easily.
【0029】更に、一次コイル14と当接面22間の距
離を可及的に増大させることにより、当接面22上にお
ける一次コイル14による磁界94の磁束密度を減少さ
せ、たとえ当接面22上に異物が載置されたとしても、
インバータ回路11の出力制限部60と相俟って、異物
に発生する熱が最小限に抑制される様に構成している。Further, by increasing the distance between the primary coil 14 and the contact surface 22 as much as possible, the magnetic flux density of the magnetic field 94 by the primary coil 14 on the contact surface 22 is reduced, and even if the contact surface 22 is Even if a foreign object is placed on the
Together with the output limiting unit 60 of the inverter circuit 11, the heat generated in the foreign matter is suppressed to the minimum.
【0030】一方、機器本体20側の当接面24の形状
を、電源本体12側の当接面22に設けた突状部28の
形状と一致させて湾曲させるとともに、電源本体12側
の本体ケース36における上端部分を周面96から包囲
して嵌める受部84を機器本体20側に設けることによ
り、機器本体20を電源本体12側にしっかりと装着
し、電源本体12上から滑り落ちるのを防止している。On the other hand, the shape of the contact surface 24 on the device body 20 side is curved so as to match the shape of the protrusion 28 provided on the contact surface 22 on the power supply body 12 side, and the body on the power supply body 12 side is curved. By providing the device main body 20 side with the receiving portion 84 that surrounds and fits the upper end portion of the case 36 from the peripheral surface 96, the device main body 20 is firmly attached to the power supply main body 12 side and prevented from sliding off from the power supply main body 12. is doing.
【0031】なお突状部28の形状は、上記の様な長手
方向にのみ伸びる円弧状の斜面に限らず、短辺方向にも
同様な傾斜を設けたり、傾斜を直線状とするなどの変更
も可能である。要するに、その上に金属の小片を乗せよ
うとしてもその載置状態が安定せず、直ちにあるいは少
しの振動で床面に滑り落ちる様な構成であれば、任意に
その形状を変更できる。The shape of the protrusion 28 is not limited to the arcuate slope extending only in the longitudinal direction as described above, and the same inclination may be provided in the short side direction or the inclination may be linear. Is also possible. In short, even if a small piece of metal is placed on it, the mounting state is not stable, and if the structure is such that it slides down onto the floor immediately or with a slight vibration, its shape can be arbitrarily changed.
【0032】なおこの滑り落ちるべき範囲は、コア30
の磁束が金属片に及ぼす磁化力により決定すればよい。
例えば前記実施例では、コア30の両端90・90の各
々の周縁をなだらかに突状にし、その中間部を平坦状も
しくは凹入状にする様な台形状や2コブラクダ状にする
なども可能である。この凹入状部分に滑り落ちた金属片
が人体等に影響の小さい温度(例えば、40℃以下)に
達しても、実用上は支障がない範囲であればよいのであ
る。The range of sliding down is the core 30.
It may be determined by the magnetizing force exerted by the magnetic flux on the metal piece.
For example, in the above-described embodiment, it is also possible to make the peripheral edges of both ends 90 of the core 30 gently projecting, and make the middle part flat or recessed into a trapezoidal shape or a double camel shape. is there. Even if the metal piece slipped down into the recessed portion reaches a temperature (for example, 40 ° C. or less) that has a small effect on the human body or the like, it may be in a range in which there is no practical problem.
【0033】更に一次コイル14と出力コイル16の形
状及び結合状態は、電磁誘導結合ができるものであれば
適宜変更して実施できる。例えば、コア30の位置ある
いは方向を変更したり、インバータ回路11における発
振周波数を上昇させることにより、コイルをプリント状
に形成してコアそれ自体をなくすなどの変更も可能であ
る。Further, the shapes and coupling states of the primary coil 14 and the output coil 16 can be changed as appropriate as long as electromagnetic induction coupling is possible. For example, the position or direction of the core 30 may be changed, or the oscillation frequency of the inverter circuit 11 may be increased to form the coil in a printed shape and eliminate the core itself.
【0034】またインバータ回路11は、上記の様な自
励式のものに代え、スイッチング用トランジスタ54を
オンオフする発振器を別に備えた他励式とするなど、そ
の構成は特に限定されるものでない。更にまた一次側発
振部10としては、上記の様なインバータ回路11を利
用するものに代えて、商用交流電源40の周波数をその
まま利用するものであってもよい。Further, the inverter circuit 11 is not limited to the self-excited type as described above, and may be of the separately excited type additionally provided with an oscillator for turning on / off the switching transistor 54, and the configuration thereof is not particularly limited. Furthermore, as the primary side oscillation unit 10, instead of using the inverter circuit 11 as described above, the frequency of the commercial AC power source 40 may be used as it is.
【0035】図5は本発明の他の実施例であって、電源
本体12側の当接面22に形成する突状部28を直線状
の斜面とするとともに、その突状部28を枢支点98を
中心に上下方向に揺動自在に構成する。更にバネ体10
0で上方に付勢することにより、図5(a)で示す機器
本体20の取り外し状態においては、突状部28の傾斜
位置を維持する様に構成している。また、一次コイル1
4のコア30を垂直方向を向けるとともに、当接面22
に設けた孔102からその先端を出没自在とする一方、
出力コイル16を空心とすることにより、図5(b)に
示す機器本体20の装着時には、コア30が出力コイル
16の中心104に嵌まって一次コイル14と結合する
様に構成している。FIG. 5 shows another embodiment of the present invention in which the protrusion 28 formed on the contact surface 22 on the power source body 12 side is a linear slope and the protrusion 28 is a pivot point. It is configured to be swingable in the vertical direction around 98. Further spring body 10
When the device main body 20 is detached as shown in FIG. 5 (a), the inclined position of the projecting portion 28 is maintained by urging it upward at 0. Also, the primary coil 1
The core 30 of No. 4 is oriented in the vertical direction, and the contact surface 22
While the tip of the hole 102 is provided on the
By making the output coil 16 air-core, when the device main body 20 shown in FIG. 5B is mounted, the core 30 is fitted in the center 104 of the output coil 16 and coupled to the primary coil 14.
【0036】一方、図6で示す実施例は、電源本体12
側の当接面22に、該当接面22上に乗った異物を本体
ケース36の外部に強制的に排出する閉止板106を備
えている。すなわち、電源本体12側の本体ケース36
内に、機器本体20の出力コイル16部分が本体ケース
80ごと挿入される取付孔108を設けるとともに、図
6(a)で示す如く、その開口110をバネ体112で
閉じ方向に付勢された閉止板106で閉じている。この
場合、閉止板106は本体ケース36の外壁と同一面ま
で移動する必要はなく、コア30の磁化力の影響を受け
ない位置まで金属片等を移動させることができれば十分
である。On the other hand, the embodiment shown in FIG.
The side contact surface 22 is provided with a closing plate 106 for forcibly discharging the foreign matter on the contact surface 22 to the outside of the main body case 36. That is, the main body case 36 on the power supply main body 12 side
Inside, a mounting hole 108 into which the output coil 16 portion of the device body 20 is inserted together with the body case 80 is provided, and as shown in FIG. 6A, the opening 110 is biased in the closing direction by a spring body 112. It is closed by a closing plate 106. In this case, the closing plate 106 does not have to move to the same plane as the outer wall of the main body case 36, and it is sufficient if the metal piece or the like can be moved to a position that is not affected by the magnetizing force of the core 30.
【0037】図7は更に他の実施例であって、電源本体
12の本体ケース36を上下面114・114が平坦な
円筒状に構成する。更に、一次コイル14を貫通するコ
ア30を直線状として水平方向を向けて本体ケース36
の中央に配設するとともに、コア30の両端面90・9
0を本体ケース36の周面116にまで伸ばしている。
したがって、電源本体12側の当接面22は常時は鉛直
方向を向くとともに、たとえ本体ケース36を横に倒し
て当接面22を上に向けても、その当接面22を含む本
体ケース36の周面116には突状部28が全体に亘り
形成されており、金属片等の異物の載置は強制的に排除
される。FIG. 7 shows still another embodiment, in which the main body case 36 of the power source main body 12 is formed in a cylindrical shape with the upper and lower surfaces 114, 114 being flat. Further, the core 30 penetrating the primary coil 14 is formed into a linear shape so that the main body case 36 faces the horizontal direction.
Is disposed in the center of the
0 extends to the peripheral surface 116 of the main body case 36.
Therefore, the contact surface 22 on the power supply main body 12 side always faces the vertical direction, and even if the main body case 36 is laid sideways so that the contact surface 22 faces upward, the main body case 36 including the contact surface 22. A projecting portion 28 is formed on the entire peripheral surface 116, and the placement of foreign matter such as metal pieces is forcibly excluded.
【図1】本発明の基本的な構成を示す概略図である。FIG. 1 is a schematic diagram showing a basic configuration of the present invention.
【図2】本発明を充電装置に実施した一例を示す一部を
破断した斜視図である。FIG. 2 is a partially cutaway perspective view showing an example in which the present invention is applied to a charging device.
【図3】電源本体に対する機器本体の装着手順を示す説
明図であって、(a)は両者の取り外し状態を、(b)
は組合せ状態を各々示す。FIG. 3 is an explanatory view showing a procedure for mounting the device main body on the power supply main body, in which (a) shows a detached state of the both and (b).
Indicates a combination state.
【図4】充電装置の電気回路の一例を示す回路図であ
る。FIG. 4 is a circuit diagram showing an example of an electric circuit of the charging device.
【図5】本発明の他の実施例を示す説明図であって、
(a)は電源本体から機器本体を取り外した状態を、
(b)は装着した状態を各々示す。FIG. 5 is an explanatory view showing another embodiment of the present invention,
(A) shows the state where the device body is removed from the power supply body,
(B) shows the mounted state.
【図6】本発明の更に他の実施例を示す説明図であっ
て、(a)は電源本体から機器本体を取り外した状態
を、(b)は装着した状態を各々示す。6A and 6B are explanatory views showing still another embodiment of the present invention, in which FIG. 6A shows a state in which the device body is removed from the power source body, and FIG.
【図7】本発明の更に他の実施例を示す説明図であっ
て、(a)は電源本体から機器本体を取り外した状態
を、(b)は装着した状態を各々示す。7A and 7B are explanatory views showing still another embodiment of the present invention, in which FIG. 7A shows a state in which the device body is removed from the power source body, and FIG.
10 一次側発振部 11 インバータ回路 12 電源本体 14 一次コイル 16 出力コイル 18 負荷 20 機器本体 22 電源本体側の当接面 24 機器本体側の当接面 26 除去手段 28 突状部 30 一次コイルのコア 32 出力コイルのコア 34 二次電池 36 電源本体の本体ケース 40 商用交流電源 58 出力制御部 60 出力制限部 80 機器本体の本体ケース 90 コア端面 92 コア端面 93 磁路 94 磁界 106 閉止板 10 primary side oscillating section 11 inverter circuit 12 power supply body 14 primary coil 16 output coil 18 load 20 equipment body 22 contact surface on power supply body side 24 contact surface on equipment body side 26 removing means 28 projecting portion 30 core of primary coil 32 Output coil core 34 Secondary battery 36 Power supply main body case 40 Commercial AC power supply 58 Output control unit 60 Output limiting unit 80 Device main body case 90 Core end face 92 Core end face 93 Magnetic path 94 Magnetic field 106 Closing plate
フロントページの続き (72)発明者 山中 光夫 福岡県田川郡方城町大字伊方4680番地 九 州日立マクセル株式会社内 (72)発明者 畠中 高則 福岡県田川郡方城町大字伊方4680番地 九 州日立マクセル株式会社内 (72)発明者 坂田 栄二 福岡県田川郡方城町大字伊方4680番地 九 州日立マクセル株式会社内Front page continuation (72) Inventor Mitsuo Yamanaka 4680 Ikata, Hachijo-machi, Tagawa-gun, Fukuoka Prefecture Kyushu Hitachi Maxell Co., Ltd. In Hitachi Maxell Co., Ltd. (72) Inventor Eiji Sakata 4680 Ikata, Hachijo-machi, Tagawa-gun, Fukuoka Prefecture Kyushu Hitachi Maxell Co., Ltd.
Claims (3)
(12)と、該一次側発振部(10)の一次コイル(1
4)と電磁誘導結合される出力コイル(16)を介して
給電される負荷(18)を備えた機器本体(20)と
を、その当接面(22)(24)を介して互いに着脱自
在に装着可能とした小型電気機器であって、 上記した電源本体(12)側の当接面(22)に、機器
本体(20)とは異なる物を当接面(22)上から除去
可能とする手段(26)を備えたことを特徴とする小型
電気機器。1. A power supply body (12) having a primary side oscillating section (10) and a primary coil (1) of the primary side oscillating section (10).
4) and a device body (20) having a load (18) fed with power through an output coil (16) electromagnetically coupled to each other, are detachable from each other via contact surfaces (22) (24) thereof. A small electric device that can be mounted on the contact surface (22) on the power supply body (12) side, which is different from the device body (20) and can be removed from the contact surface (22). A small electric device comprising means (26) for
(12)側の当接面(22)の略全面に亘って形成され
た突状部(28)であることを特徴とする請求項1記載
の小型電気機器。2. The removing means (26) is a projection (28) formed over substantially the entire contact surface (22) on the power source body (12) side. Item 1. A small electric device according to item 1.
ル(16)はコア(30)(32)を個別に備え、両コ
ア(30)(32)の端面(90)(92)を、電源本
体(12)と機器本体(20)の当接面(22)(2
4)上に互いに離間して配設したことを特徴とする請求
項2記載の小型電気機器。3. The above-mentioned primary coil (14) and output coil (16) are individually provided with cores (30) (32), and end faces (90) (92) of both cores (30) (32) are connected to a power source. Contact surfaces (22) (2) of the main body (12) and the device main body (20)
4) The small electric device according to claim 2, wherein the small electric devices are arranged above each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11905393A JP3338939B2 (en) | 1993-04-21 | 1993-04-21 | Small electrical equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11905393A JP3338939B2 (en) | 1993-04-21 | 1993-04-21 | Small electrical equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06311659A true JPH06311659A (en) | 1994-11-04 |
JP3338939B2 JP3338939B2 (en) | 2002-10-28 |
Family
ID=14751745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11905393A Expired - Fee Related JP3338939B2 (en) | 1993-04-21 | 1993-04-21 | Small electrical equipment |
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JP (1) | JP3338939B2 (en) |
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CN105765824B (en) * | 2013-11-18 | 2019-12-31 | 株式会社Ihi | Non-contact power supply system |
US11095157B2 (en) | 2013-11-18 | 2021-08-17 | Ihi Corporation | Wireless power-transmitting system |
JP2015154539A (en) * | 2014-02-12 | 2015-08-24 | 株式会社デンソー | Non-contact power supply device |
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