JPH06311658A - Miniature electric appliance - Google Patents
Miniature electric applianceInfo
- Publication number
- JPH06311658A JPH06311658A JP5119052A JP11905293A JPH06311658A JP H06311658 A JPH06311658 A JP H06311658A JP 5119052 A JP5119052 A JP 5119052A JP 11905293 A JP11905293 A JP 11905293A JP H06311658 A JPH06311658 A JP H06311658A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- output
- response
- signal
- detection 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.)
- Granted
Links
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 electric device of this type is provided with a secondary battery on the device main body side, and the device main body is always set on the power supply main body side to maintain the state of charge 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 oscillating part such as the inverter circuit provided in the power supply main body is always in the driving state, the load main body is exclusively used for the purpose of power saving when the main body is removed from the power supply main body for a long time. The output of the primary side oscillating unit is also controlled according to 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 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。As a result of consideration made in view of such an inconvenience, the present inventors have sent a predetermined detection signal from the power supply main body side to the device main body side and oscillate the primary side in response to a response signal returned from the device main body side. It was found that not only can the above-mentioned heat generation accident be prevented by controlling the output of the power supply section, but also the output control of the power supply main body corresponding to the equipment main body 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-mentioned findings, and accurately detects the mounting state of the equipment main body to be fed to the power supply main body, and appropriately outputs the primary side oscillating unit such as an inverter circuit. An object of the present invention is to provide a small electric device that can be controlled and can prevent a heat generation accident in which a foreign substance is mistaken for the 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。A further object of the present invention is to provide a small electric device capable of surely detecting the device body while maintaining a relatively simple structure.
【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。A further object of the present invention is to provide a small electric device which can cope with the load capacity of the device main body used and can easily control the output on the power supply main body side.
【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 electric device according to the present invention has a primary side oscillating section 10 such as an inverter circuit, as shown in the basic structure of FIG. And a device body 20 having a load 18, such as a secondary battery, which is fed via an output coil 16 electromagnetically coupled to the primary coil 14 of the primary side oscillating unit 10. It can be detachably connected 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 side is provided with a device response means 26 capable of outputting a response signal 24 when receiving a predetermined detection signal 22. On the other hand, the power supply body 12 described above
On the side, a predetermined detection signal 22 is sent to the device body 20 and a response signal 2 sent from the device response means 26.
4 is provided with a device detection unit 28 that enables output control of the primary side oscillation unit 10.
【００１０】なお、上記した機器本体２０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。ま
た出力を充分に抑制した状態で一次側発振部１０を駆動
し、一次コイル１４から検知信号２２を出力させる様に
することも可能である。The device response means 26 on the side of the device body 20 may be a simple signal path that allows the response signal 24 corresponding to the input detection signal 22 to be output to the outside, or may be input. A response signal 24 different from the detection signal 22 and unique to the device may be output. It is also possible to drive the primary side oscillating section 10 in a state where the output is sufficiently suppressed so that the primary coil 14 outputs the detection signal 22.
【００１１】[0011]
【作用】上記した構成により、電源本体１２側から常時
あるいは間欠的に検知信号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はその動作を停止あるいは
その出力を抑制しつづける。With the above-described structure, the detection signal 22 is constantly or intermittently output from the power supply body 12 side. At this time,
While the device body 20 is not coupled to the predetermined position on the power supply body 12, the response signal 24 is not input to the device detection means 28, and the primary side oscillation unit 10 stops its operation or continues to suppress its output.
【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。When the device body 20 is attached to the power supply body 12, the detection signal 22 sent from the power supply body 12 side.
Is sent to the power supply body 12 as a response signal 24, which is substantially the same as the detection signal 22 or different from the detection signal 22, and which is unique to the device, by the device response means 26 in the device 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 unit 10 so that the primary side oscillating unit 10 can supply the electric power required by the device main body 20 side. Control 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 side and the predetermined response signal 24 is received, it is determined that the device 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 mounting of the device main body 20 to the power supply main body 12 can be reliably determined, and the accident that the 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。Furthermore, the load capacity of the equipment body 20 to be used can be appropriately dealt with by constructing the device body 20 to be mounted by superimposing information specific to the response signal 24 and returning it to the power supply body 12 side. The output control of the primary side oscillator 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。EXAMPLE An example in which the present invention is applied to a charging device for a secondary battery will be shown below, but it is needless to say that the present invention can be applied to various small electric devices such as an electric toothbrush and an electric tool in a similar manner. .
【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。A charging device for carrying out the present invention is shown in FIGS.
As specifically shown in the configuration thereof, the protection circuit 34 and the inverter circuit 1 as the primary side oscillation unit 10 are provided in the main body case 32.
An inverter type power supply main body 12 accommodating an electric circuit composed of 1 and a lower end thereof is detachably fitted to the power supply main body 12, and is charged inside the main body case 36 by using a charging current sent from the power supply main body 12 side. It is composed of a device body 20 capable of charging the 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 body case 32 of the power source body 12 is a rectangular hollow box body as shown in FIG. 2, and a power cord 44 having a power plug 42 at its tip is extended from the side surface 40 to form an internal electric circuit. Can be connected to the commercial AC power supply 46. Further, a contact surface 48 with the device body 20 is provided on the upper surface side,
Surrounding the contact surface 48, the side surface 40 extends upward to form a receiving portion 50 into which the lower end of the device body 20 is detachably 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によって加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。A protection circuit 3 housed in the main body case 32.
4, the metal film resistor 52 connected in series with the power supply line to the inverter circuit 11 blocks the input of a large current, while the overvoltage absorption element 54 connected in parallel prevents the surge voltage from being input. To prevent. Further, after rectifying the input voltage by the rectifier 56, the temperature fuse 5
8 makes it possible to forcibly stop the operation of the inverter circuit 11 at the time of heating, and the capacitor 60 prevents the noise from flowing out from the side of the inverter circuit 11.
【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。In the inverter circuit 11, the primary coil 14 is provided on the collector side of the switching transistor 62 and the protective resistor 64 is provided on the emitter side, and the output control section 66, the timer section 68 and the device detection section are provided on the base side. 70 are provided respectively.
【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 section 66 has a resistor 72 and a capacitor 74 connected in series, a feedback coil 76 is provided between the connection point between them and the base end of the transistor 62, and a switching transistor in parallel with the capacitor 74. Equipped with 78. Therefore, when the transistor 78 is off, the on / off cycle of the switching transistor 62 is restricted to a constant frequency of, for example, about 40 kHz by the charging / discharging time constant of the resistor 72 and the capacitor 74, while
The feedback coil 76 and the capacitor 74 are configured so that a normal inverter operation is performed in which the on time of the switching transistor 62 is regulated.
【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 a set value, collector current begins to flow in the primary coil 14, and the increase in the collector current generates a voltage in the direction of turning on the transistor 62 in the feedback coil 76. Then, the transistor 62 is rapidly turned on.
After the transistor 62 is turned on, the capacitor 74 is charged and discharged, and the base current is reduced, so that the direction of the voltage output from the feedback coil 76 is reversed, and a reverse bias is applied between the base and emitter of the transistor 62 to make the transistor 62. Turn off rapidly. Transistor 6 mentioned above
By repeating the ON / OFF operation of No. 2, the inverter circuit 11 performs self-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. Further, the protection resistor 64 provided on the emitter side of the switching transistor 62 regulates the off-timing of the switching transistor 62 by raising the emitter potential of the switching transistor 62 in response to the increase of the collector current. This is to prevent 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, which is at a high level for a short time of, for example, about 1/10 second every minute, to the base end of the transistor 78. ing. Therefore, the transistor 78 is normally turned on and the capacitor 74 is turned on.
The inverter circuit 11 is forcibly stopped by short-circuiting both ends thereof, but each time a signal is input from the timer unit 68, the transistor 78 is turned off for a short time to intermittently drive the inverter circuit 11 at 1-minute intervals. As a result, the detection signal 22 can be output to the outside of the power supply 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 detection section 70 charges the capacitor 84 using the diode 82 with the voltage induced in the detection coil 80 by the response signal 24 sent from the device body 20 side in response to the detection signal 22. This charging voltage is input to the base terminal of the transistor 78 via the diode 86. Therefore, while the response signal 24 is being received, that is, the device body 20 is
During mounting, the transistor 78 is turned off, the inverter circuit 11 is continuously driven, and the required power is supplied from the primary coil 14 to the output coil 16 on the device body 20 side. However, when the input of the response signal 24 disappears, the charging voltage is immediately discharged by the resistor 88 connected in parallel with the capacitor 84, the transistor 78 is turned on again, and the inverter circuit 11 is stopped and controlled.
【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 rectangular hollow main body case 36, and a secondary battery 3 such as a plurality of nicad batteries is provided in an upper portion of the main body case 36.
8 is housed, a power supply unit 90 that supplies a predetermined charging current to the secondary battery 38 and a device response unit 92 that sends a response signal 24 to the power supply body 12 side are provided in the lower portion of the body case 36. 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 thereof is provided, and on the upper surface side, from the secondary battery 38 to an external load 95 such as a motor. A plug 96 for supplying power to the power supply is provided.
【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 the coil bobbin 98 provided in the main body case 32 on the power supply main body 12 side and penetrates through the center thereof.
0 is projected from the contact surface 48. On the other hand, the device body 2
An engaging hole 102 into which the core 100 of the primary coil 14 is fitted is provided on the contact surface 94 on the 0 side, and a bobbin 104 is provided so that the center of the engaging hole 102 coincides with that of the bobbin 1.
The output coil 16 is wound on 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 positioned on the same core 100 and are electromagnetically inductively 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 selectively extracted by the rectifying diode 106 a voltage generated during the off period of the switching transistor 62 of the inverter circuit 11 and sent to the secondary battery 38 to be used for charging.
【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 structure as the primary coil 14, and outputs the voltage output from the output coil 16 to the diode 110 corresponding to the ON period of the switching transistor 62. And selectively applied to induce an induced current. The response coil 108 is provided at a position corresponding to the contact surface 48 on the power supply body 12 side and has a configuration substantially similar to that of the output coil 16 and thus the detection coil 8 is provided.
0 and the core 112 are integrally coupled, and a predetermined response signal 24 is sent from the device body 20 side to the power supply body 12 side 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
Exemplifies the one using magnetism as the response signal 24, but not limited to this, one using light from a light emitting diode and a phototransistor, one using ultrasonic waves from an ultrasonic wave generator and a sound receiving element, The medium of the response signal 24 to be used can be arbitrarily changed and implemented by, for example, configuring 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。Further, instead of using the half wave of the voltage induced in the output coil 16 to drive the device response section 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 the 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 changed as appropriate as long as electromagnetic induction coupling is possible. For example, the cores 100 and 112
Change the protruding position or direction of the
16 separately provided with cores 32, 36
By eliminating the protrusion from the coil or increasing the oscillation frequency in the inverter circuit 11,
It is also possible to make a change in that the core itself is eliminated by forming a printed shape.
【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。Furthermore, instead of outputting the detection signal 22 by intermittently driving the inverter circuit 11 using the timer section 68 when the device body 20 is detached from the power source body 12, the output power from the inverter circuit 11 is sufficient. A detection signal 22 is formed by continuously or intermittently driving in a suppressed state, and when the connection of the device body 20 is detected as described above, the inverter circuit 11 is continuously driven in a full power state. You can also do it.
【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。Further, the inverter circuit 11 is not limited to the self-exciting type as described above, and may be of the separately exciting type in which an oscillator for turning on / off the switching transistor 62 is separately provided. Furthermore, as the primary side oscillating unit 10, instead of using the inverter circuit 11 as described above, the frequency of the commercial AC power source 46 may be used as it is.
【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, both of which detect a magnetic change when the device body 20 is properly attached to the power source body 12, 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 shown in FIG. 5A,
A device response unit 92 that is driven by the induced voltage of the output coil 16 and has a frequency sufficiently higher than the oscillation frequency of the inverter circuit 11, for example, an AM or FM modulated signal, is provided on the device body 20 side, while a power supply is provided. On the body 12 side,
From the current flowing through the primary coil 14 or the current flowing through a coil such as a feedback coil or an independent search coil wound concentrically with the primary coil 14, a response of a predetermined oscillation frequency via a signal discriminating means such as a bandpass filter. The 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 sending the response signal to the output coil 16 only during the period in which 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 is selectively taken out 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 arranged close to the primary coil 14, the switching transistor 62 is turned on and off substantially equally. As a result of the amount of load current flowing, the feedback coil 7
The difference voltage between the peak voltages in both positive and negative directions at both ends of 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 on / off half cycle of the switching transistor 62, and because the regulation characteristic of the inverter transformer is poor, the load current does not flow in the half cycle. In the half cycle, the differential voltage across the feedback coil 76 exceeds the set value and rises.
【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, when the device main body 20 is normally set in the power supply main body 12 and the power supply to the secondary battery 38 is started while the output power of the inverter circuit 11 is suppressed, the feedback coil 76 indicates that state as a response signal. Appears as a change in the voltage across. Therefore, the voltage change is detected by the device detection unit 70.
In this case, the inverter circuit 11 is fully driven to supply a predetermined electric power to the device 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。Further, the power source main body 20 side is provided with a component itself such as a coil or a capacitor forming the inverter circuit 11 on the power source main body 12 side or a part of a signal path to the component, and the power source main body 12 is provided with the device main body 20 side. It is also possible to configure the inverter circuit 11 to normally operate in the full drive state only when is set normally.
【００３８】図６（ａ）〜（ｄ）は更に別の実施例であ
って、本実施例にあっては何れも、検知信号２２を上記
の様にインバータ回路１１の発振を利用して一次コイル
１４から出力させるのではなく、別に設けた検知信号発
生部１１８として備えた発光ダイオード１２０から連続
的あるいは間欠的に出力される赤外光による検知信号２
２に対応した応答信号２４を、機器検知部７０として備
えたフォトトランジスタ１２２で検知し、インバータ回
路１１の出力制御を行う様にしている。FIGS. 6 (a) to 6 (d) are still another embodiment, and in all of the present embodiments, the detection signal 22 is primarily transmitted by utilizing the oscillation of the inverter circuit 11 as described above. The detection signal 2 by infrared light, which is not output from the coil 14 but is continuously or intermittently output from the light emitting diode 120 provided as the detection signal generating unit 118 provided separately,
The response signal 24 corresponding to No. 2 is detected by the phototransistor 122 provided as the device detection unit 70, and the output control of the inverter circuit 11 is performed.
【００３９】ここで図６（ａ）は、電源本体１２内に検
知信号２２を出力する発光ダイオード１２０と、応答信
号２４を検知すると所定の制御信号３０をインバータ回
路１１に送るフォトトランジスタ１２２とを備えるとと
もに、機器本体２０内に光ファイバーや反射鏡の様な光
導手段を利用した信号路１２４を機器応答部９２として
設けることにより、機器本体２０内に入射された検知信
号２２を応答信号２４としてそのまま、あるいは信号路
２４中に介装した従来と同様な変調器により所定の変調
を加えて電源本体１２側に戻すように構成している。Here, FIG. 6A shows a light emitting diode 120 which outputs a detection signal 22 in the power source body 12, and a phototransistor 122 which sends a predetermined control signal 30 to the inverter circuit 11 when the response signal 24 is detected. By providing a signal path 124 using a light guide such as an optical fiber or a reflecting mirror in the device body 20 as the device response section 92, the detection signal 22 incident in the device body 20 is directly used as the response signal 24. Alternatively, a modulator similar to the conventional one inserted in the signal path 24 is used to apply a predetermined modulation and return it to the power supply body 12 side.
【００４０】更に図６（ｂ）は、発光ダイオード１２０
から出力される検知信号２２を、機器本体２０側から伸
びる遮蔽板１２６で遮ることにより、検知信号２２より
その強度が充分に弱められた応答信号２４をフォトトラ
ンジスタ１２２に入力する様にしている。逆に図６
（ｃ）は、検知信号２２を機器本体２０側から伸びるレ
ンズ体１２８で集光することにより、検知信号２２より
その強度が十分増大された応答信号２４をフォトトラン
ジスタ１２２に入力するようにしている。Further, FIG. 6B shows a light emitting diode 120.
The detection signal 22 output from the device is blocked by the shield plate 126 extending from the device body 20 side, so that the response signal 24, the intensity of which is sufficiently weaker than the detection signal 22, is input to the phototransistor 122. Conversely, FIG.
In (c), the detection signal 22 is collected by the lens body 128 extending from the device main body 20 side, and the response signal 24 whose intensity is sufficiently higher than that of the detection signal 22 is input to the phototransistor 122. .
【００４１】なお、上記した図６（ａ）〜（ｃ）は何れ
も、外乱光と応答信号２４との区別を明確にするため、
検知信号２２を所定周波数で断続するなどの変調を施
し、それを選択的に取り出すようにすることが好まし
い。また利用する検知信号２２および応答信号２４は、
上記した光に代えて、磁界、電界あるいは音波にあって
も略同様に実施できる。In each of FIGS. 6 (a) to 6 (c), in order to clarify the distinction between the ambient light and the response signal 24,
It is preferable to modulate the detection signal 22 such that it is intermittent at a predetermined frequency and selectively extract it. The detection signal 22 and the response signal 24 used are
Instead of the above-mentioned light, a magnetic field, an electric field, or a sound wave can be used in a substantially similar manner.
【００４２】図６（ｄ）は更に他の実施例であって、電
源本体１２側からの検知信号２２の入射に対応し、機器
本体２０における光の反射あるいは光の放出を利用して
応答信号２４を戻すようにしている。この場合、機器本
体２０と他の物体とを区別するため、機器本体２０側に
おける検知信号２２の入射位置に、検知信号２２とは異
なった周波数の光を発生する蛍光層１３０を予め形成し
ておき、その発生光を応答信号２４として選択的に検知
する様に構成することが好ましい。FIG. 6D shows still another embodiment, which responds to the incidence of the detection signal 22 from the power source main body 12 side and utilizes the reflection or emission of light in the equipment main body 20 to make a response signal. I am trying to put back 24. In this case, in order to distinguish the device body 20 from other objects, a fluorescent layer 130 that emits light of a frequency different from that of the detection signal 22 is previously formed at the incident position of the detection signal 22 on the device body 20 side. It is preferable that the generated light is selectively detected as the response signal 24.
【００４３】図７は更に、本発明を電気かみそりに実施
した一例を示すブロック図である。本実施例にあって
は、電源本体１２側のインバータ回路１１を利用し、機
器本体２０側に備えた二次電池３８を急速充電可能とす
るとともに、二次電池３８の端子電圧、充電時間あるい
は負荷として備えたモータ１３２に対するスイッチ１３
３を介した通電状態に対応して二次電池３８における現
在の充電量を検知部１３４で積算記憶し、その充電量を
表示部１３６を使用して表示することは従来と同様であ
る。本発明にあっては更に、出力コイル１６からの給電
で駆動される機器応答部９２を備え、電源本体１２に機
器本体２０をセットして給電中は、充電量検知部１３４
で保持している二次電池３８の充電量情報を応答信号２
４上に重畳して電源本体１２側に送り、機器検知部７０
を用いて取り出した充電量情報を利用し、出力制御部１
３８によりインバータ回路１１の出力制御を行う様にし
ている。FIG. 7 is a block diagram showing an example in which the present invention is applied to an electric shaver. In the present embodiment, the secondary battery 38 provided on the device main body 20 side can be rapidly charged by using the inverter circuit 11 on the power supply main body 12 side, and the terminal voltage of the secondary battery 38, charging time, or Switch 13 for the motor 132 provided as a load
It is the same as in the prior art that the current charging amount of the secondary battery 38 is integrated and stored in the detecting unit 134 and is displayed on the display unit 136 in correspondence with the energized state via the third unit. The present invention further includes a device response section 92 that is driven by power supply from the output coil 16, and while the device body 20 is set in the power supply body 12 and power is being supplied, the charge amount detection section 134.
The charge amount information of the secondary battery 38 held by the response signal 2
4 and sends it to the power supply main body 12 side, and the device detection unit 70
Using the charge amount information extracted by using the output control unit 1
38 controls the output of the inverter circuit 11.
【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 cutaway 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 vertical cross-sectional view showing a state in which the power supply main body and the device main body of FIG. 2 are normally coupled.
【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 a 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 view showing another embodiment of the present invention, showing an example of detecting and controlling a magnetic change when the device body is installed in the power source body.
【図６】本発明の更に他の実施例を示す説明図であっ
て、検知信号の発生部をインバータ回路とは別に備えた
例を示す。FIG. 6 is an explanatory view showing still another embodiment of the present invention, showing an example in which a detection signal generating section is provided separately from the inverter circuit.
【図７】本発明を急速充電を可能とした電気かみそりに
実施した一例を示すブロック図である。FIG. 7 is a block diagram showing an example in which the present invention is applied to an electric shaver capable of quick charging.
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 検知信号 ２４ 応答信号 ２６ 機器応答手段 ２８ 機器検知手段 ３０ 制御信号 ３２ 本体ケース ３８ 二次電池 ６２ スイッチング用トランジスタ ６６ 出力制御部 ６８ タイマー部 ７０ 機器検知部 ９０ 給電部 ９２ 機器応答部 １０８ 応答コイル １１８ 検知信号発生部 １２４ 信号路 １２６ 遮蔽板 １２８ レンズ体 １３０ 蛍光層 １３８ 出力制御部 10 Primary Side Oscillator 11 Inverter Circuit 12 Power Supply Body 14 Primary Coil 16 Output Coil 18 Load 20 Equipment Body 22 Detection Signal 24 Response Signal 26 Equipment Response Means 28 Equipment Detection Means 30 Control Signal 32 Body Case 38 Secondary Battery 62 Switching Transistor 66 Output Control Section 68 Timer Section 70 Equipment Detection Section 90 Power Supply Section 92 Equipment Response Section 108 Response Coil 118 Detection Signal Generation Section 124 Signal Path 126 Shielding Plate 128 Lens Body 130 Fluorescent Layer 138 Output Control Section
───────────────────────────────────────────────────── 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 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Yamanaka 4680 Ikata, Hachijo-machi, Tagawa-gun, Fukuoka Prefecture Kyushu Hitachi Maxell Co., Ltd. (72) Takanori Hatanaka, 4680 Ikata, Hachijo-machi, Tagawa-gun, Fukuoka Address: Kyushu Hitachi Maxell Co., Ltd. (72) Inventor: Eiji Sakata 4680 Ikata, Fukujo-machi, Tagawa-gun, Fukuoka Prefecture
Claims (4)
（１２）と、該発振部（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、 上記した機器本体（２０）側に、所定の検知信号（２
２）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、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（２４）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）を備えたことを特徴とする小型電気機器。1. Power is supplied through a power supply body (12) having a primary side oscillating section (10) and an output coil (16) electromagnetically inductively coupled to the primary coil (14) of the oscillating section (10). A small electric device that can be detachably coupled to a device body (20) equipped with a load (18) that is provided with a predetermined detection signal (2) on the device body (20) side.
A device response means (26) capable of outputting a response signal (24) when receiving 2) is provided, while a predetermined detection signal (22) for the device body (20) is provided on the power supply body (12) side. And a device detecting means (28) capable of controlling the output of the primary side oscillation section (10) corresponding to the response signal (24) sent from the device responding means (26). Electrical equipment.
手段（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 device response means (26) on the side of the device body (20) is a signal path capable of outputting a response signal (24) corresponding to the input detection signal (22) to the outside. The small electric device according to claim 1.
手段（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。3. The device response means (26) on the device body (20) side can output a response signal (24) unique to the device different from the input detection signal (22). The small electric device according to claim 1, which is characterized in that.
れる検知信号（２２）が、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
る信号であることを特徴とする請求項２または３記載の
小型電気機器。4. The detection signal (22) output from the power supply body (12) side is a signal output from the primary coil (14) in a state in which the output of the primary side oscillator (10) is sufficiently suppressed. The small electric device according to claim 2, wherein the small electric device is provided.
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 true JPH06311658A (en) | 1994-11-04 |
| JP3306675B2 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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