JP3306675B2 - Small electrical equipment - Google Patents
Small electrical equipmentInfo
- Publication number
- JP3306675B2 JP3306675B2 JP11905293A JP11905293A JP3306675B2 JP 3306675 B2 JP3306675 B2 JP 3306675B2 JP 11905293 A JP11905293 A JP 11905293A JP 11905293 A JP11905293 A JP 11905293A JP 3306675 B2 JP3306675 B2 JP 3306675B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- main body
- response
- power supply
- signal
- 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.)
- Expired - Lifetime
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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 appliances such as a charging device, an electric toothbrush or an electric power tool, and more particularly, to a power supply main body for supplying electric power and an electric equipment main body having a load which can be separated from each other. The present invention relates to a device which is configured and capable of transferring power between the two devices using 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セ
ット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-sized electric device of this kind has a secondary battery on the device main body side, and always sets the device main body on the power supply main body side while maintaining the charged state of the secondary battery with a very small current. It was common to prepare for a short-time load drive by the device body alone. Therefore, while the primary-side oscillating unit such as the inverter circuit provided in the power supply main unit is always in the driving state, the load of the load is used for the purpose of exclusively saving power when the device main unit is removed from the power supply main unit for a long time. In some cases, the output of the primary oscillation unit is controlled in accordance with the presence or absence.
【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 unit 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 disposed close to the primary coil, the metal piece may be erroneously recognized as an appropriate 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、電源本体側から機器本体側に所定の検知信
号を送り、機器本体側から返送される応答信号に対応し
て一次側発振部の出力制御を行うことにより、上記した
発熱事故が未然に防止できるばかりか、使用される機器
本体に対応した電源本体の出力制御が適切に行なえるこ
とを知見した。The inventors of the present invention have studied in view of such inconvenience, and as a result, have transmitted a predetermined detection signal from the power supply main body to the equipment main body, and have responded to a response signal returned from the equipment main body to respond to the primary side oscillation. It has been found that by performing the output control of the unit, not only the above-mentioned heat generation accident can be prevented, but also the output control of the power supply body corresponding to the equipment body to be used can be appropriately performed.
【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、給電されるべき機器本体の電源本体に対
する装着状態を正確に検知し、インバータ回路の様な一
次側発振部の適切な出力制御が行なえ、異物を機器本体
と誤認した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 findings, and accurately detects the mounting state of a power supply main body to a power supply main body, and appropriately outputs an output of a primary side oscillation unit such as an inverter circuit. An object of the present invention is to provide a small-sized electric device capable of performing control and preventing a heat generation accident in which a foreign substance is erroneously recognized as a device body.
【０００６】本発明は更に、比較的簡単な構成を維持し
たまま、確実な機器本体の検知が行なえる小型電気機器
を提供することを目的とする。Another object of the present invention is to provide a small electric device capable of reliably detecting the device main body while maintaining a relatively simple configuration.
【０００７】本発明は更にまた、使用される機器本体の
負荷容量に対応し、電源本体側の出力制御が容易に行な
える小型電気機器を提供することを目的とする。It is still another object of the present invention to provide a small-sized electric device capable of easily controlling the output of the power supply unit corresponding to the load capacity of the device unit used.
【０００８】[0008]
【課題を解決するための手段】上記した目的を達成する
ため、本発明にかかる小型電気機器は図１にその基本的
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と、該一次側発振部
１０の一次コイル１４と電磁誘導結合された出力コイル
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とを、互いに着脱自在に結合可能として
いる。In order to achieve the above-mentioned object, a small-sized electric device according to the present invention has a primary oscillating section 10 such as an inverter circuit as shown in FIG. And a device body 20 having a load 18, such as a secondary battery, which is supplied with power via an output coil 16 electromagnetically coupled to the primary coil 14 of the primary side oscillating unit 10. They are detachably connectable to each other.
【０００９】更に上記した機器本体２０側に、所定の検
知信号２２を受けると応答信号２４を出力可能とする機
器応答手段２６を備える。一方、上記した電源本体１２
側には、機器本体２０に対して所定の検知信号２２を送
るとともに、機器応答手段２６から送られる応答信号２
４に対応した一次側発振部１０の出力制御を可能とする
機器検知手段２８を備えている。Further, the device main body 20 is provided with device response means 26 capable of outputting a response signal 24 when a predetermined detection signal 22 is received. On the other hand, the power supply body 12
Sends a predetermined detection signal 22 to the device body 20 and a response signal 2
4 is provided with a device detecting means 28 that enables output control of the primary side oscillating unit 10 corresponding to.
【００１０】本発明は更に、電源本体１２側から出力さ
れる検知信号２２として、一次側発振部１０の出力を十
分抑制した状態で一次コイル１４から出力される信号を
利用する一方、機器検知手段２８では、機器応答手段２
６から応答信号２４を受け取ると、一次側発振部１０か
らの出力を、負荷１８を駆動するのに十分な大きさに増
大させることを特徴とする。なお、上記した機器本体２
０側の機器応答手段２６は、入力された検知信号２２に
対応した応答信号２４を外部に出力可能とする単なる信
号路であってもよいし、入力された検知信号２２とは異
なったその機器固有の応答信号２４を出力可能とするも
のでもよい。The present invention further provides an output from the power supply body 12 side.
As the detection signal 22 to be detected, the output of the primary side
The signal output from the primary coil 14 with the
On the other hand, the device detection unit 28 uses the device response unit 2
6 receives the response signal 24 from the primary oscillation unit 10
Their output large enough to drive the load 18.
It is characterized by increasing. In addition, the above-mentioned device body 2
The device response means 26 on the 0 side may be a simple signal path capable of outputting a response signal 24 corresponding to the input detection signal 22 to the outside or a device different from the input detection signal 22. not good, even those that can be output a unique response signal 24.
【００１１】上記した構成により、電源本体１２側から
は、一次側発振部１０の出力を間欠駆動させるなどして
十分抑制した状態で一次コイル１４から検知信号２２が
出力される。この時、機器本体２０が電源本体１２上の
所定位置に結合されていない間は応答信号２４の機器検
知手段２８に対する入力はなく、一次側発振部１０は間
欠動作するなどしてその出力を抑制しつづける。With the above configuration, the power supply body 12
Is to intermittently drive the output of the primary oscillation unit 10
The detection signal 22 is output from the primary coil 14 in a state where it is sufficiently suppressed . During this time, the input while the device body 20 is not coupled to a predetermined position on the power supply body 12 of the appliance detection unit 28 of the response signal 24 is not the primary-side oscillating section 10
It continues to suppress its output, for example, by missing work.
【００１２】ここで機器本体２０が電源本体１２に装着
されると、電源本体１２側から送られる検知信号２２
は、機器本体２０内の機器応答手段２６により、検知信
号２２と実質的に同一、あるいは検知信号２２とは異な
ったその機器固有の応答信号２４として電源本体１２に
向けて送られる。すると機器検知手段２８はその応答信
号２４の入力に対応し、一次側発振部１０に所定の制御
信号３０を送り、機器本体２０側が必要とするだけの電
力を供給できる様に一次側発振部１０の出力を制御する
のである。Here, when the device main body 20 is mounted on the power supply main body 12, a detection signal 22 sent from the power supply main body 12 side is provided.
Is transmitted to the power supply main body 12 as a response signal 24 which is substantially the same as the detection signal 22 or is different from the detection signal 22 by the device response means 26 in the device main body 20. Then, the device detecting means 28 responds to the input of the response signal 24 and sends a predetermined control signal 30 to the primary side oscillating portion 10 so that the primary side oscillating portion 10 can supply as much power as the device body 20 needs. It controls the output of.
【００１３】[0013]
【発明の効果】本発明は上記の如く、電源本体１２側か
ら検知信号２２を送り、所定の応答信号２４を受けとる
と、機器本体２０が適正に接続されているものと判断し
て、一次側発振部１０を定格動作させる様に構成したの
で、機器本体２０の電源本体１２に対する装着が確実に
判断され、金属片を負荷と誤認して発熱させる事故は確
実に防止される。As described above, according to the present invention, when the detection signal 22 is sent from the power supply main body 12 and a predetermined response signal 24 is received, it is determined that the equipment main body 20 is properly connected, and the primary side is determined. Since the oscillating unit 10 is configured to perform the rated operation, the attachment of the device main body 20 to the power supply main body 12 is reliably determined, and an accident in which a metal piece is mistakenly regarded as a load and generates heat is reliably prevented.
【００１４】更に、装着される機器本体２０として固有
の情報を応答信号２４に重畳して電源本体１２側に戻す
ように構成することにより、使用される機器本体２０の
負荷容量に適切に対応した一次側発振部１０の出力制御
が行われる。Further, by configuring the device main body 20 to be mounted so that information unique to the device main body 20 is superimposed on the response signal 24 and returned to the power supply main body 12 side, the load capacity of the device main body 20 to be used is appropriately dealt with. Output control of the primary side oscillation unit 10 is performed.
【００１５】[0015]
【実施例】以下本発明を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。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the present invention is applied to a charging device for a secondary battery will be described below. However, the present invention is not limited to this, and it goes without saying that the present invention can be applied to various small electric devices such as an electric toothbrush and an electric tool. .
【００１６】本発明を実施する充電装置は、図２〜図４
にその構成を具体的に示す如く、本体ケース３２内に一
次側発振部１０として保護回路３４とインバータ回路１
１からなる電気回路を収納したインバータ式の電源本体
１２と、該電源本体１２に対してその下端が着脱自在に
嵌まり、電源本体１２側から送られる充電電流を用いて
本体ケース３６の内部に負荷１８として備えた二次電池
３８を充電可能とする機器本体２０とから構成される。FIGS. 2 to 4 show a charging device embodying the present invention.
As shown in FIG. 1, the protection circuit 34 and the inverter circuit 1
And an inverter-type power supply main body 12 containing an electric circuit composed of the power supply unit 1 and a lower end thereof detachably fitted to the power supply main body 12, and a charging current sent from the power supply main body 12 side is used to enter the inside of the main body case 36. And a device main body 20 capable of charging a secondary battery 38 provided as the load 18.
【００１７】電源本体１２の本体ケース３２は、図２に
示すように矩形状の中空箱体であって、側面４０からそ
の先端に電源プラグ４２を備えた電源コード４４を伸ば
し、内部の電気回路を商用交流電源４６に接続可能とす
る。更に上面側に機器本体２０との当接面４８を設け、
その当接面４８を包囲して側面４０を上方に伸ばし、機
器本体２０の下端が挿脱自在に嵌まる受部５０を形成し
ている。The main body case 32 of the power supply main body 12 is a rectangular hollow box as shown in FIG. 2, and a power cord 44 having a power plug 42 at the end thereof is extended from a side surface 40 to provide an internal electric circuit. Can be connected to the commercial AC power supply 46. Further, a contact surface 48 with the device main body 20 is provided on the upper surface side,
The side surface 40 is extended upward so as to surround the contact surface 48 to form a receiving portion 50 into which the lower end of the device main body 20 is removably fitted.
【００１８】本体ケース３２内に収納される保護回路３
４は、図４に示す如く、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５２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５４によりサージ電圧の入力を防止する。更に整
流器５６により入力電圧を整流した後、温度ヒューズ５
８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６０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 3 housed in the main body case 32
4, a metal film resistor 52 connected in series with a power supply line to the inverter circuit 11 prevents the input of a large current, while the surge voltage input is connected by an overvoltage absorbing element 54, as shown in FIG. To prevent. After the input voltage is further rectified by the rectifier 56, the temperature fuse 5
And forcibly it can stop the operation of the inverter circuit 11 when excessive heat by 8, and also in the manner to prevent the outflow of noise from the inverter circuit 11 side by the capacitor 60.
【００１９】インバータ回路１１は、スイッチング用ト
ランジスタ６２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６４を各々介装するとともに、ベー
ス側に出力制御部６６、タイマー部６８および機器検知
部７０を各々備えている。The inverter circuit 11 has the primary coil 14 interposed on the collector side of the switching transistor 62 and the protection resistor 64 interposed on the emitter side, and has an output control section 66, a timer section 68 and a device detection section on the base side. 70 are provided.
【００２０】出力制御部６６は、抵抗７２とコンデンサ
７４を直列接続するとともに、両者の接続点とトランジ
スタ６２のベース端間に帰還コイル７６を介装し、更に
コンデンサ７４と並列にスイッチング用のトランジスタ
７８を備えている。したがってトランジスタ７８がオフ
時には、抵抗７２およびコンデンサ７４の充放電時定数
によりスイッチング用トランジスタ６２のオンオフ周期
を例えば４０ｋＨｚ程度の一定周波数に規制する一方、
帰還コイル７６およびコンデンサ７４でスイッチング用
トランジスタ６２のオン時間を規制した、通常のインバ
ータ動作が行われる様に構成している。The output control unit 66 connects a resistor 72 and a capacitor 74 in series, interposes a feedback coil 76 between the connection point of the resistor 72 and the base end of the transistor 62, and further connects a switching transistor in parallel with the capacitor 74. 78 is provided. Therefore, when the transistor 78 is off, the on / off cycle of the switching transistor 62 is regulated to a constant frequency of, for example, about 40 kHz by the charging / discharging time constant of the resistor 72 and the capacitor 74.
The feedback coil 76 and the capacitor 74 regulate the ON time of the switching transistor 62 so that a normal inverter operation is performed.
【００２１】すなわち、抵抗７２を介してコンデンサ７
４が充電され、スイッチング用トランジスタ６２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７６におけるトランジスタ６２をオンする方向への電
圧を発生させ、トランジスタ６２を急激にオンさせる。
トランジスタ６２のオン後、コンデンサ７４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
７６から出力される電圧の方向が反転し、トランジスタ
６２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６２を急激にオフする。上記したトランジスタ６
２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のである。That is, the capacitor 7 is connected via the resistor 72.
4 is charged and when the base voltage of the switching transistor 62 exceeds the set value, a collector current starts to flow through the primary coil 14, and the increase in the collector current generates a voltage in a direction in which the transistor 62 in the feedback coil 76 is turned on. Then, the transistor 62 is rapidly turned on.
After the transistor 62 is turned on, the charging and discharging of the capacitor 74 progresses, and the direction of the voltage output from the feedback coil 76 is reversed due to the decrease in the base current. Turn off sharply. Transistor 6 described above
By repeating the on / off operation of No. 2, the inverter circuit 11 performs self-excited oscillation at a predetermined frequency.
【００２２】なお、一次コイル１４と並列に接続された
コンデンサ７９は、スイッチング用トランジスタ６２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
スイッチング用トランジスタ６２のエミッタ側に介装さ
れた保護用抵抗６４は、コレクタ電流の増大に対応して
スイッチング用トランジスタ６２のエミッタ電位を上昇
させることによってスイッチング用トランジスタ６２の
オフ時期を規制し、過大な電流がスイッチング用トラン
ジスタ６２に流入するのを防止するものである。The capacitor 79 connected in parallel with the primary coil 14 absorbs the shock voltage generated when the switching transistor 62 is turned off. The protection resistor 64 interposed on the emitter side of the switching transistor 62 regulates the off-time of the switching transistor 62 by increasing the emitter potential of the switching transistor 62 in response to the increase of the collector current, This prevents an excessive current from flowing into the switching transistor 62.
【００２３】タイマー部６８は、商用交流電源４６との
接続時には常時通電され、例えば１分毎に１０分の１秒
間程度の短時間だけハイレベルとなるクロック信号をト
ランジスタ７８のベース端に入力している。したがっ
て、トランジスタ７８は常時はオンしてコンデンサ７４
の両端を短絡し、インバータ回路１１を強制的に停止状
態としているが、タイマー部６８から信号が入力される
毎に短時間だけトランジスタ７８をオフし、インバータ
回路１１を１分間隔で間欠駆動させることにより、一次
コイル１４を介して電源本体１２の外部に向けて検知信
号２２を出力できる様にしている。The timer section 68 is always energized when connected to the commercial AC power supply 46, and inputs a clock signal that goes high for a short period of time, for example, about one tenth of a second, to the base end of the transistor 78. ing. Therefore, the transistor 78 is always turned on and the capacitor 74 is turned on.
Are short-circuited to forcibly stop the inverter circuit 11, but the transistor 78 is turned off for a short time each time a signal is input from the timer unit 68, and the inverter circuit 11 is intermittently driven at one-minute intervals. Thus, the detection signal 22 can be output to the outside of the power supply main body 12 via the primary coil 14.
【００２４】一方機器検知部７０は、検知信号２２に対
応して機器本体２０側から送られる応答信号２４により
検知コイル８０に誘起される電圧を、ダイオード８２を
用いてコンデンサ８４に充電するとともに、ダイオード
８６を介してこの充電電圧をトランジスタ７８のベース
端に入力する様にしている。従って、応答信号２４を受
けている期間中、すなわち機器本体２０が電源本体１２
に装着中はトランジスタ７８はオフ状態となり、インバ
ータ回路１１は連続駆動され、一次コイル１４から機器
本体２０側の出力コイル１６へ向けて必要な電力を供給
する。しかし、応答信号２４の入力がなくなると、コン
デンサ８４と並列接続された抵抗８８により充電電圧は
直ちに放電され、トランジスタ７８を再びオンしてイン
バータ回路１１は停止制御される。On the other hand, the device detecting section 70 charges the capacitor 84 with the voltage induced in the detecting coil 80 by the response signal 24 sent from the device main body 20 in response to the detection signal 22 by using the diode 82. This charging voltage is input to the base terminal of the transistor 78 via the diode 86. Therefore, during the period of receiving the response signal 24, that is, when the device main body 20
During the mounting, the transistor 78 is turned off, the inverter circuit 11 is continuously driven, and the necessary power is supplied from the primary coil 14 to the output coil 16 on the device main body 20 side. However, when there is no input of the response signal 24, the charging voltage is immediately discharged by the resistor 88 connected in parallel with the capacitor 84, and the transistor 78 is turned on again to control the inverter circuit 11 to stop.
【００２５】機器本体２０は、矩形状中空の本体ケース
３６内の上部に、複数本のニカド電池の様な二次電池３
８を収納する一方、本体ケース３６内の下部に二次電池
３８に所定の充電電流を供給する給電部９０と、電源本
体１２側に応答信号２４を送る機器応答部９２を備え
る。更に本体ケース３６の下端側に、電源本体１２の受
部５０に嵌まってその当接面４８に当たる当接面９４を
設け、上面側に、二次電池３８からモータの様な外部負
荷９５に対して給電するためのプラグ９６を備えてい
る。The device main body 20 has a plurality of rechargeable batteries 3 such as NiCd batteries mounted on an upper part in a rectangular hollow main body case 36.
A power supply unit 90 for supplying a predetermined charging current to the secondary battery 38 and a device response unit 92 for transmitting the response signal 24 to the power supply main body 12 are provided at a lower portion in the main body case 36 while housing the power supply 8. Further, on the lower end side of the main body case 36, a contact surface 94 that fits into the receiving portion 50 of the power supply main body 12 and contacts the contact surface 48 is provided, and on the upper surface side, an external load 95 such as a motor from the secondary battery 38 is connected. A plug 96 is provided for supplying power to the battery.
【００２６】インバータ回路１１の一次コイル１４は、
電源本体１２側の本体ケース３２内に備えたコイルボビ
ン９８上に巻かれており、その中心を貫通するコア１０
０を当接面４８から突出させている。一方、機器本体２
０側の当接面９４上に一次コイル１４のコア１００が嵌
まる係合穴１０２を設け、その係合穴１０２と中心を一
致させてボビン１０４を備えるとともに、そのボビン１
０４上に出力コイル１６を巻いている。したがって、電
源本体１２と機器本体２０とが当接面４８・９４を一致
させて適切に配置されると、同一コア１００上に一次コ
イル１４と出力コイル１６が位置して互いに電磁誘導結
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両端に誘起される様にしてい
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６２がオフ期間中に発生する電圧を
整流用ダイオード１０６で選択的に取り出し、二次電池
３８に送って充電に利用する。The primary coil 14 of the inverter circuit 11 is
The core 10 is wound on a coil bobbin 98 provided in the main body case 32 on the power supply main body 12 side, and passes through the center thereof.
0 protrudes from the contact surface 48. On the other hand, the device body 2
An engagement hole 102 in which the core 100 of the primary coil 14 is fitted is provided on the abutting surface 94 on the 0 side, and a bobbin 104 is provided so that the center of the engagement hole 102 is aligned with the bobbin 104.
The output coil 16 is wound on the reference numeral 04. Therefore, when the power supply main body 12 and the device main body 20 are appropriately arranged with the contact surfaces 48 and 94 aligned with each other, the primary coil 14 and the output coil 16 are located on the same core 100 and electromagnetically coupled to each other, A predetermined voltage is induced across the output coil 16 in response to a change in the current in the primary coil 14. The induced voltage is used to charge the voltage generated during the off-period of the switching transistor 62 of the inverter circuit 11 by the rectifier diode 106 and selectively sent to the secondary battery 38 for use.
【００２７】一方、機器応答部９２は一次コイル１４と
略同様な構成の応答コイル１０８であって、スイッチン
グ用トランジスタ６２のオン期間中に対応して出力コイ
ル１６から出力される電圧をダイオード１１０を用いて
選択的に印加し、誘導電流が流される。かかる応答コイ
ル１０８は、電源本体１２側の当接面４８の対応位置に
備えた、出力コイル１６と略同様な構成の検知コイル８
０とコア１１２を介して一体に結合され、所定の応答信
号２４を機器本体２０側から電源本体１２側に無接触状
態で送り、インバータ回路１１を連続駆動させるのであ
る。On the other hand, the device response section 92 is a response coil 108 having substantially the same configuration as that of the primary coil 14, and applies a voltage output from the output coil 16 to the diode 110 during the ON period of the switching transistor 62. And selectively apply to induce an induced current. The response coil 108 is provided at a position corresponding to the contact surface 48 on the side of the power supply main body 12, and has a detection coil 8 having substantially the same configuration as the output coil 16.
0, and are integrally connected via the core 112, and a predetermined response signal 24 is transmitted from the device main body 20 side to the power supply main body 12 in a non-contact state to continuously drive the inverter circuit 11.
【００２８】なお、機器応答部９２と機器検知部７０
は、応答信号２４として磁気を用いたものを例示したが
これに限らず、発光ダイオードとフォトトランジスタに
よる光を用いたもの、超音波発生器と受音素子による超
音波を用いたもの、両者間でコンデンサを構成して電界
の大小を検知するなど、利用する応答信号２４の媒体は
任意に変更して実施できる。The device response unit 92 and the device detection unit 70
Is an example using magnetism as the response signal 24, but is not limited to this. One using light from a light emitting diode and a phototransistor, one using ultrasonic waves from an ultrasonic generator and a sound receiving element, The medium of the response signal 24 to be used can be arbitrarily changed, for example, by forming a capacitor to detect the magnitude of the electric field.
【００２９】また、出力コイル１６に誘起される電圧の
半波を利用して機器応答部９２を駆動するのに代えて、
出力コイル１６とは別にサーチコイルをボビン１０４上
に備え、このコイルからの出力電圧で機器応答部９２を
駆動するものであってもよい。また一次コイル１４と出
力コイル１６、応答コイル１０８と検知コイル８０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１００・１１２
の突出位置あるいは方向を変更したり、両コイル１４・
１６にコアを個別に備えてコアの本体ケース３２・３６
からの突出をなくしたり、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１４・１６
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。Also, instead of using the half-wave of the voltage induced in the output coil 16 to drive the device response unit 92,
A search coil may be provided on the bobbin 104 separately from the output coil 16 and the device response unit 92 may be driven by an output voltage from this coil. Further, the shapes and coupling states of the primary coil 14 and the output coil 16 and the response coil 108 and the detection coil 80 can be appropriately changed as long as electromagnetic induction coupling can be performed. For example, cores 100 and 112
Change the projecting position or direction of the
16 are provided with individual cores, and core body cases 32 and 36 are provided.
By eliminating the protrusion from the coils and raising the oscillation frequency in the inverter circuit 11, the coils 14 and 16
It is also possible to make changes such as forming the core in a print shape and eliminating the core itself.
【００３０】更にまた、機器本体２０を電源本体１２か
ら取り外し時に、タイマー部６８を用いてインバータ回
路１１を間欠駆動させて検知信号２２を出力させるのに
代え、インバータ回路１１からの出力電力を十分抑制さ
せた状態で連続あるいは間欠駆動することにより検知信
号２２を形成し、機器本体２０が接続されたことを上記
の如く検知された時に、インバータ回路１１をフルパワ
ー状態で連続駆動させる様に構成することもできる。Further, when the device main body 20 is detached from the power supply main body 12, instead of using the timer section 68 to intermittently drive the inverter circuit 11 to output the detection signal 22, the output power from the inverter circuit 11 is sufficiently reduced. The detection signal 22 is formed by continuous or intermittent driving in the suppressed state, and the inverter circuit 11 is continuously driven in the full power state when the connection of the device main body 20 is detected as described above. You can also.
【００３１】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６２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４６の周波数をそ
のまま利用するものであってもよい。The configuration of the inverter circuit 11 is not particularly limited. For example, the inverter circuit 11 is of a separately-excited type provided with an oscillator for turning on and off the switching transistor 62 instead of the self-excited type as described above. Furthermore, as the primary-side oscillating unit 10, instead of the one using the inverter circuit 11 as described above, the one using the frequency of the commercial AC power supply 46 as it is may be used.
【００３２】図５（ａ）および（ｂ）は本発明の他の実
施例であって、何れも機器本体２０が電源本体１２に対
して適正に装着された時における磁気変化を検知し、イ
ンバータ回路１１の出力を制御する様にしたものであ
る。FIGS. 5 (a) and 5 (b) show another embodiment of the present invention. In each of FIGS. 5 (a) and 5 (b), a magnetic change when the device main body 20 is properly mounted to the power supply main body 12 is detected, and The output of the circuit 11 is controlled.
【００３３】すなわち図５（ａ）の実施例にあっては、
機器本体２０側に出力コイル１６の誘起電圧で駆動され
る、インバータ回路１１の発振周波数より十分高い周波
数の応答信号、例えばＡＭ、ＦＭ変調信号を出力可能と
する機器応答部９２を備える一方、電源本体１２側に、
一次コイル１４に流れる電流又は一次コイル１４と同芯
に巻かれた帰還コイルや独立のサーチコイルの様なコイ
ルに流れる電流から、バンドパスフィルターのような信
号弁別手段を介して所定発振周波数の応答信号を取り出
し可能な機器検知部７０を備えている。That is, in the embodiment of FIG.
The apparatus main body 20 includes a device response unit 92 that can output a response signal driven by an induced voltage of the output coil 16 and that has a frequency sufficiently higher than the oscillation frequency of the inverter circuit 11, for example, an AM or FM modulation signal. On the body 12 side,
From the current flowing in the primary coil 14 or the current flowing in a coil such as a feedback coil or an independent search coil wound concentrically with the primary coil 14, a response at a predetermined oscillation frequency is passed through signal discriminating means such as a band-pass filter. A device detection unit 70 capable of extracting a signal is provided.
【００３４】従って、機器本体２０が電源本体１２に結
合されている期間に限定して機器応答部９２が応答信号
を出力コイル１６に流す結果、その応答信号の変化は一
次コイル１４側に戻され、それが機器検知部７０で選択
的に取り出されて、インバータ回路１１の出力制御に利
用されるのである。Therefore, as a result of the device response section 92 passing the response signal to the output coil 16 only during the period when the device body 20 is coupled to the power supply body 12, the change in the response signal is returned to the primary coil 14 side. , Which are selectively extracted by the device detection unit 70 and used for output control of the inverter circuit 11.
【００３５】更に図５（ｂ）の実施例にあっては、金属
体の様な異物が一次コイル１４に接近して配設される
と、スイッチング用トランジスタ６２のオンオフ両期間
に亘って略等量の負荷電流が流れる結果、帰還コイル７
６の両端における正負両方向におけるピーク電圧の差電
圧は比較的小さい値を維持する。それに対し、機器本体
２０が接続された状態では、スイッチング用トランジス
タ６２のオンまたはオフの半周期間にのみ負荷電流が流
れるとともに、インバータトランスのレギュレーション
特性が悪いため、負荷電流が流れる半周期と流れない半
周期とでは、帰還コイル７６における両端の差電圧が設
定値を超えて上昇する。Further, in the embodiment shown in FIG. 5B, when a foreign substance such as a metal body is disposed close to the primary coil 14, the foreign matter is substantially equal to both the ON and OFF periods of the switching transistor 62. As a result, the feedback coil 7
The voltage difference between the peak voltages in both the positive and negative directions at both ends of No. 6 maintains a relatively small value. On the other hand, in the state where the device body 20 is connected, the load current flows only during the half cycle of ON or OFF of the switching transistor 62, and the regulation characteristic of the inverter transformer is poor. In the half cycle, the voltage difference between both ends of the feedback coil 76 rises beyond the set value.
【００３６】すなわち、インバータ回路１１の出力電力
が抑制された状態で、電源本体１２に機器本体２０を正
常にセットして二次電池３８に給電を開始すると、その
状態は応答信号として帰還コイル７６の両端電圧の変化
として現れる。そこで、その電圧変化を機器検知部７０
で捉えると、インバータ回路１１をフル駆動して機器本
体２０側に所定の電力を供給するのである。That is, in a state where the output power of the inverter circuit 11 is suppressed, when the apparatus main body 20 is normally set in the power supply main body 12 and power supply to the secondary battery 38 is started, the state is returned as a response signal to the feedback coil 76. Appears as a change in the voltage between both ends. Therefore, the voltage change is detected by the device detection unit 70.
That is, the inverter circuit 11 is fully driven to supply a predetermined power to the device main body 20 side.
【００３７】また、機器本体２０側に電源本体１２側の
インバータ回路１１を構成するコイルやコンデンサの様
な部品それ自体、あるいは部品に対する信号路の一部を
構成し、電源本体１２に機器本体２０が正常にセットさ
れた時にのみインバータ回路１１がフル駆動状態による
正常な作動を行う様に構成することも可能である。The component itself such as a coil or a capacitor constituting the inverter circuit 11 of the power supply main body 12 or a part of a signal path for the component is formed on the device main body 20 side. It is also possible to configure the inverter circuit 11 to operate normally in the full drive state only when is set normally.
【００３８】[0038]
【００３９】[0039]
【００４０】[0040]
【００４１】[0041]
【００４２】[0042]
【００４３】[0043]
【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の外観形状を
示す一部を破断した斜視図である。FIG. 2 is a partially broken perspective view showing an external shape of an example in which the present invention is applied to a charging device.
【図３】図２の電源本体と機器本体とを正常に結合した
状態を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a state in which the power supply main body and the device main body of FIG. 2 are normally connected.
【図４】充電装置の電気的な構成の一例を示す回路図で
ある。FIG. 4 is a circuit diagram showing an example of an electrical configuration 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、機
器本体が電源本体に設置された時における磁気変化を検
知して制御する例を示す。FIG. 5 is an explanatory diagram showing another embodiment of the present invention, and shows an example in which a magnetic change when a device main body is installed in a power supply main body is detected and controlled.
１０ 一次側発振部 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 検知信号 ２４ 応答信号 ２６ 機器応答手段 ２８ 機器検知手段 DESCRIPTION OF SYMBOLS 10 Primary side oscillation part 12 Power supply body 14 Primary coil 16 Output coil 18 Load 20 Equipment main body 22 Detection signal 24 Response signal 26 Equipment response means 28 Equipment detection means
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 (56)参考文献 特開 平４−67732（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02J 7/00 - 7/12 H02J 7/34 - 7/36 Continued on the front page (72) Inventor Mitsuo Yamanaka 4680 Ikata, Ogata-machi, Tagawa-gun, Fukuoka Prefecture Inside Kyushu Hitachi Maxell K.K. Incorporated (72) Inventor Eiji Sakata 4680 Ikata, Fukuoka, Tagawa-gun, Fukuoka Prefecture Kyushu Hitachi Maxell, Inc. (56) References JP-A-4-67732 (JP, A) (58) Int.Cl. 7 , DB name) H02J 7/ 00-7/12 H02J 7 /34-7/36
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た出力コイル（１６）を介して
給電される負荷（１８）を備えた機器本体（２０）と
を、互いに着脱自在に結合可能とした小型電気機器であ
って、前記 機器本体（２０）側に、所定の検知信号（２２）を
受けると応答信号（２４）を出力可能とする機器応答手
段（２６）を備える一方、前記 電源本体（１２）側に、前記機器本体（２０）に対
して所定の検知信号（２２）を送るとともに、前記機器
応答手段（２６）から送られる応答信号（２４）に対応
した前記一次側発振部（１０）の出力制御を可能とする
機器検知手段（２８）を備え、更に 前記電源本体（１
２）側から出力される前記検知信号（２２）は、前記一
次側発振部（１０）の出力を十分抑制した状態で前記一
次コイル（１４）から出力される信号であり、 前記機器検知手段（２８）は、前記機器応答手段（２
６）から応答信号（２４）を受け取ると、前記一次側発
振部（１０）からの出力を、前記負荷（１８）を駆動す
るのに十分な大きさに増大させる ことを特徴とする小型
電気機器。1. A power supply body having a primary side oscillating unit (10).
(12) and thePrimary sidePrimary coil (1) of the oscillating unit (10)
4) via an output coil (16) which is inductively coupled to
A device body (20) with a load (18) to be fed;
Are small electric devices that can be detachably connected to each other.
WhatSaid A predetermined detection signal (22) is sent to the device body (20) side.
Device response hand that can output a response signal (24) when received
While providing a step (26);Said On the side of the power supply body (12),
And sends a predetermined detection signal (22).Saidmachine
Corresponds to the response signal (24) sent from the response means (26)
didSaidEnables output control of the primary side oscillator (10)
Equipped with device detection means (28)And more The power supply body (1
2) The detection signal (22) output from the side
With the output of the secondary oscillation section (10) sufficiently suppressed,
A signal output from the next coil (14), The device detecting means (28) is provided with the device responding means (2).
6) When the response signal (24) is received from the primary side,
The output from the vibration unit (10) is used to drive the load (18).
Increase to a size large enough to Characterized by small size
Electrical equipment.
（２６）が、入力された検知信号（２２）に対応した応
答信号（２４）を外部に出力可能とする信号路であるこ
とを特徴とする請求項１記載の小型電気機器。2. The apparatus according to claim 1, wherein the device response means (26) of the device main body (20) is a signal path for outputting a response signal (24) corresponding to the input detection signal (22) to the outside. The small electric device according to claim 1, wherein:
（２６）が、入力された検知信号（２２）とは異なった
その機器固有の応答信号（２４）を出力可能とすること
を特徴とする請求項１記載の小型電気機器。Wherein said device body (20) side of the instrument response means (26), characterized in that to enable outputs the device-specific response signal different from the input detection signal (22) (24) The small electric device according to claim 1.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11905293A JP3306675B2 (en) | 1993-04-21 | 1993-04-21 | Small electrical equipment |
| JP2000120416A JP3392103B2 (en) | 1993-04-21 | 2000-04-21 | Small electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11905293A JP3306675B2 (en) | 1993-04-21 | 1993-04-21 | Small electrical equipment |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000120416A Division JP3392103B2 (en) | 1993-04-21 | 2000-04-21 | Small electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06311658A JPH06311658A (en) | 1994-11-04 |
| JP3306675B2 true JP3306675B2 (en) | 2002-07-24 |
Family
ID=14751719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11905293A Expired - Lifetime JP3306675B2 (en) | 1993-04-21 | 1993-04-21 | Small electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3306675B2 (en) |
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