JP2008225574A

JP2008225574A - Two-wire switching device

Info

Publication number: JP2008225574A
Application number: JP2007059029A
Authority: JP
Inventors: Kiyoshi Goto; 潔後藤; Shuji Matsuura; 修次松浦
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2007-03-08
Filing date: 2007-03-08
Publication date: 2008-09-25
Anticipated expiration: 2027-03-08
Also published as: JP4899950B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two-wire switching device for improving performance at start-up. <P>SOLUTION: A two-wire switching device SW comprises a main opening/closing unit 1; a control function unit F composed of a control unit 8 switching between an off operation and an on operation when an operation signal is input and a function unit 9 outputting an operation signal to the control unit 8; a power supply unit for power off 4 to be used in the off operation; a power supply unit for power on 5 to be used in the on operation; an auxiliary power supply unit 6 outputting a direct current in stead of the power supply 5 while the direct current is not outputted from the power supply 5; a stabilization circuit unit 7 applying a stabilized voltage made by stabilizing the output voltages from the power supply units 4, 5, 6 to the function unit F; and a voltage detection unit 14 outputting a power supply start signal to the circuit unit 7 when it is determined that the output voltages are higher than a voltage obtained by a stabilized voltage necessary for stating an operation of the function unit F, wherein the circuit 7 is configured so as to apply the stabilized voltage to the function unit F when the start signal is inputted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、２線式スイッチ装置に関するものである。 The present invention relates to a two-wire switch device.

近年、配線器具の電子化が進んでいる。これに伴い、電子スイッチ装置に用いられるスイッチ要素としては、無接点のスイッチ素子である３端子双方向性サイリスタ（トライアック）や、サイリスタなどが広く用いられるようになってきている。しかし、省配線の見地から見れば、２線配線式のスイッチ装置（２線式スイッチ装置）においては、上記スイッチ要素は、交流電源と負荷との直列回路の両端間に接続される（負荷が交流電源を介してスイッチ要素の両端間に接続される）ことになるため、スイッチ装置に電源線を個別に引き込むことができず、如何にして自己の回路電源を確保するかが問題となっている。 In recent years, digitization of wiring devices has progressed. Accordingly, as a switch element used in an electronic switch device, a three-terminal bidirectional thyristor (triac) that is a contactless switch element, a thyristor, and the like have been widely used. However, from the viewpoint of reduced wiring, in a two-wire wiring type switch device (two-wire type switch device), the switch element is connected between both ends of a series circuit of an AC power source and a load (the load is Since it is connected between both ends of the switch element via an AC power supply), it is not possible to individually draw power lines into the switch device, and how to secure its own circuit power supply becomes a problem Yes.

そこで、このような問題を解決するために、図２に示すような回路構成を有する２線式スイッチ装置ＳＷが提案されている（同様のものとしては、特許文献１が挙げられる）。 In order to solve such a problem, a two-wire switch device SW having a circuit configuration as shown in FIG. 2 has been proposed (for example, Patent Document 1 is cited).

図２に示す２線式スイッチ装置ＳＷは、例えば屋内に設けられたスイッチボックスから引き出した商用電源の２本の屋内配線を用いて商用電源および負荷に接続され、主に屋内の壁部などの造営材に埋め込み設置された状態で使用される２線式配線器具であり、商用電源からなる交流電源ＡＣと、制御対象となる負荷（例えば、白熱灯や蛍光灯を備える照明器具や換気扇などの機器）ＬＦからなる直列回路の両端それぞれが接続される接続端子Ｔ１，Ｔ２を備えている。 The two-wire switch device SW shown in FIG. 2 is connected to a commercial power source and a load using, for example, two indoor wirings of a commercial power source drawn from a switch box provided indoors. It is a two-wire wiring device that is used in a state where it is embedded in a construction material. It is an AC power supply AC made up of a commercial power supply and a load to be controlled (for example, a lighting device equipped with an incandescent lamp or a fluorescent lamp, a ventilation fan, etc. Device) It has connection terminals T1 and T2 to which both ends of a series circuit made of LF are connected.

接続端子Ｔ１，Ｔ２間には、図２に示すように、３端子双方向性サイリスタからなる主開閉部１が接続されている。３端子双方向性サイリスタは、ゲート端子に所定の閾値以上の電流（ゲート電流）が入力された際に、オンとなる（ターンオンする）常開型のスイッチであって、両端間に印加された電圧がゼロになったときに（ゼロクロス点で）、オフに切り換わる特性を有している。 Between the connection terminals T1 and T2, as shown in FIG. 2, a main opening / closing part 1 composed of a three-terminal bidirectional thyristor is connected. A three-terminal bidirectional thyristor is a normally-open switch that is turned on (turned on) when a current exceeding a predetermined threshold (gate current) is input to the gate terminal, and is applied between both ends. When the voltage becomes zero (at the zero cross point), it has a characteristic of switching off.

交流電源ＡＣを介して負荷ＬＦを接続端子Ｔ１，Ｔ２間に接続した際には、主開閉部１の両端間に負荷ＬＦが交流電源ＡＣを介して接続されて、交流電源ＡＣと負荷ＬＦと主開閉部１とからなる閉回路が構成される。この閉回路では、主開閉部１がオンであれば、交流電源ＡＣから負荷ＬＦには、負荷ＬＦを動作させるのに十分な電力が供給され、主開閉部１がオフであれば、交流電源ＡＣから負荷ＬＦには、負荷ＬＦを動作させるのに十分な電力が供給されない。また、接続端子Ｔ１，Ｔ２間にはサージアブソーバＺとノイズフィルタ用のコンデンサＣ１とが接続され、主開閉部１と接続端子Ｔ２との間にはノイズフィルタ用のインダクタンスＬが接続されている。なお、以下の説明では、主開閉部１において接続端子Ｔ１に接続された一端を電源側端子と称し、接続端子Ｔ２に接続された他端を負荷側端子と称する。 When the load LF is connected between the connection terminals T1 and T2 via the AC power supply AC, the load LF is connected between the both ends of the main switching unit 1 via the AC power supply AC, and the AC power supply AC and the load LF are connected. A closed circuit including the main opening / closing part 1 is configured. In this closed circuit, if the main switching unit 1 is on, sufficient power is supplied from the AC power source AC to the load LF to operate the load LF. If the main switching unit 1 is off, the AC power source AC is not supplied to the load LF enough power to operate the load LF. Further, a surge absorber Z and a noise filter capacitor C1 are connected between the connection terminals T1 and T2, and a noise filter inductance L is connected between the main switching part 1 and the connection terminal T2. In the following description, one end of the main switching unit 1 connected to the connection terminal T1 is referred to as a power supply side terminal, and the other end connected to the connection terminal T2 is referred to as a load side terminal.

２線式スイッチ装置ＳＷは、交流電源ＡＣから負荷ＬＦに給電しないオフ動作と、交流電ＡＣから負荷ＬＦに給電するオン動作とを行うように構成されており、オフ動作とオン動作との切り換えは、制御部８により行われるようになっている。 The two-wire switch device SW is configured to perform an off operation in which power is not supplied from the AC power supply AC to the load LF and an on operation in which power is supplied from the AC power AC to the load LF. Switching between the off operation and the on operation is not possible. The control unit 8 performs this operation.

制御部８は、操作信号が入力される毎にオフ動作とオン動作とを切り換えるように構成されており、制御部８には、制御部８とともに所定の機能を発揮する機能部９が接続されている。 The control unit 8 is configured to switch between an off operation and an on operation each time an operation signal is input. The control unit 8 is connected to a function unit 9 that exhibits a predetermined function together with the control unit 8. ing.

機能部９は、例えば、２線式スイッチ装置ＳＷのオン動作とオフ動作を切り換えるための操作信号を制御部８に出力するように構成されている。このような機能部９の一例としては、リモコンと通信を行う受信装置が挙げられる。この場合、機能部９は、リモコンが送信するリモコン信号を受信した際に制御部８に操作信号を出力する。なお、機能部９としては、この他に、周囲の明るさに応じて負荷ＬＦを動作させるための照度センサ、人を検出した際に負荷ＬＦを動作させるための赤外線センサなどを採用できる。また、機能部９としては、制御部８の出力を元にして、２線式スイッチ装置ＳＷがオン動作とオフ動作のいずれの状態であるかを表示するものであってもよい。例えば、オン動作であれば緑色光を放射し、オフ動作であれば赤色光を放射する発光表示機能を有するものであってもよい。 The function unit 9 is configured to output, for example, an operation signal for switching between the ON operation and the OFF operation of the two-wire switch device SW to the control unit 8. An example of such a function unit 9 is a receiving device that communicates with a remote controller. In this case, the function unit 9 outputs an operation signal to the control unit 8 when receiving a remote control signal transmitted by the remote control. In addition, as the function unit 9, an illuminance sensor for operating the load LF according to ambient brightness, an infrared sensor for operating the load LF when a person is detected, and the like can be employed. The function unit 9 may display whether the two-wire switch device SW is in an on operation or an off operation based on the output of the control unit 8. For example, it may have a light emitting display function that emits green light in the on operation and emits red light in the off operation.

このような制御部８と機能部９とによって、制御機能部Ｆが構成されており、制御機能部Ｆでは、制御部８から機能部９に電力が供給されるようになっている。 A control function unit F is configured by the control unit 8 and the function unit 9, and in the control function unit F, power is supplied from the control unit 8 to the function unit 9.

ところで、図２に示す２線式スイッチ装置ＳＷでは、主開閉部１の両端それぞれに入力端子（以下、「交流入力端子」と称する）が接続された整流回路部２と、整流回路部２の高電位側の出力端子（以下、「直流出力端子」と称する）に接続されたオフ用電源部４およびオン用電源部５と、オフ用電源部４およびオン用電源部５の出力端の両方に接続された補助電源部６と、オフ用電源部４またはオン用電源部５または補助電源部６の出力電圧を安定化してなる安定化電圧を制御機能部Ｆの制御部８に印加する安定化回路部７とによって、交流電源ＡＣから制御機能部Ｆに電力を供給するようになっている。 By the way, in the two-wire switch device SW shown in FIG. 2, a rectifier circuit unit 2 having input terminals (hereinafter referred to as “AC input terminals”) connected to both ends of the main opening / closing unit 1, Both the off power supply unit 4 and the on power supply unit 5 connected to the output terminal on the high potential side (hereinafter referred to as “DC output terminal”), and the output terminals of the off power supply unit 4 and the on power supply unit 5 And a stabilizing voltage obtained by stabilizing the output voltage of the auxiliary power supply unit 6 connected to the power supply unit 4 and the power supply unit 4 for turning off or the power supply unit 5 for turning on or the auxiliary power supply unit 6 to the control unit 8 of the control function unit F. The control circuit unit 7 supplies power to the control function unit F from the AC power supply AC.

整流回路部２は、例えば、交流電源ＡＣが出力する交流電流を整流して整流電流（脈流）を出力するダイオードブリッジであり、一対の交流入力端子の一方が主開閉部１の負荷側端子に接続され、他方が主開閉部１の電源側端子に接続されている。 The rectifier circuit unit 2 is, for example, a diode bridge that rectifies an AC current output from the AC power supply AC and outputs a rectified current (pulsating current), and one of a pair of AC input terminals is a load side terminal of the main switching unit 1. The other is connected to the power supply side terminal of the main opening / closing part 1.

ここで、整流回路部２の一方の交流入力端子と主開閉部１の負荷側端子との間には、主開閉部１用の駆動回路部（以下、「第１駆動回路部」と称する）３が接続されている。 Here, between one AC input terminal of the rectifier circuit unit 2 and the load side terminal of the main switching unit 1, a driving circuit unit for the main switching unit 1 (hereinafter referred to as “first driving circuit unit”). 3 is connected.

第１駆動回路部３は、整流回路部２の直流出力端子間が短絡された際に、主開閉部１のゲート端子に所定の閾値以上のゲート電流を出力して主開閉部１をオンに切り換えるゲート駆動回路であり、例えば、駆動用コンデンサ（図示せず）と抵抗（図示せず）の並列回路からなり、整流回路部２の前記一方の交流入力端子との接続点が主開閉部１のゲート端子に接続されている。つまり、第１駆動回路部３は、駆動用コンデンサの充電電圧に比例するゲート電流を主開閉部１のゲート端子に出力するから、整流回路部２の直流出力端子間を短絡した電流によって、駆動用コンデンサが充電されて、ゲート電流が前記閾値以上となった際に、主開閉部１がオンに切り換えられる。 When the DC output terminals of the rectifier circuit unit 2 are short-circuited, the first drive circuit unit 3 outputs a gate current exceeding a predetermined threshold to the gate terminal of the main switching unit 1 to turn on the main switching unit 1 A gate driving circuit to be switched, which is composed of, for example, a parallel circuit of a driving capacitor (not shown) and a resistor (not shown), and a connection point between the one AC input terminal of the rectifying circuit unit 2 is a main switching unit 1 Is connected to the gate terminal. That is, since the first drive circuit unit 3 outputs a gate current proportional to the charging voltage of the drive capacitor to the gate terminal of the main switching unit 1, the first drive circuit unit 3 is driven by a current short-circuited between the DC output terminals of the rectifier circuit unit 2. When the capacitor for use is charged and the gate current becomes equal to or greater than the threshold value, the main switching unit 1 is switched on.

また、整流回路部２の直流出力端子間には、オンに切り換えられた際に出力端子間を短絡する常開型の補助開閉部１０が接続されている。この補助開閉部１０は、補助開閉部用の駆動回路部（以下、「第２駆動回路部」と称する）１１によってオン・オフが切り換えられるようになっており、第２駆動回路部１１は、制御部８により後述する制御信号が入力された際に、補助開閉部１０をオンに切り換えるように構成されている。なお、このような補助開閉部１０はサイリスタなどにより実現され、第２駆動回路部１１は第１駆動回路部３と同様のゲート駆動回路などにより実現されている。 Further, between the DC output terminals of the rectifier circuit unit 2, a normally open type auxiliary opening / closing unit 10 that short-circuits between the output terminals when switched on is connected. The auxiliary opening / closing unit 10 is switched on and off by a driving circuit unit (hereinafter referred to as “second driving circuit unit”) 11 for the auxiliary opening / closing unit, and the second driving circuit unit 11 includes: When a control signal (to be described later) is input by the control unit 8, the auxiliary opening / closing unit 10 is switched on. The auxiliary opening / closing unit 10 is realized by a thyristor or the like, and the second drive circuit unit 11 is realized by a gate drive circuit similar to the first drive circuit unit 3 or the like.

オフ用電源部４は、オフ動作時に用いられるものであって、整流回路部２の整流電流を元に直流電流を出力するように構成されている。このオフ用電源部４の出力電圧には上限が設定されており、安定化回路部７の後述する３端子レギュレータＲＧの入力端子とグランドとの間に過剰な電圧が印加されないように、余分な電流をグランドに流すようになっている。このようなオフ用電源部４は、例えば、電流制限を行う抵抗（図示せず）や、電圧をクリップして定電圧化するツェナーダイオード（図示せず）を利用して構成することができる。ところで、上述したようにグランドに流された余分な電流は、グランドを通じて整流回路部２の低電位側の直流出力端子に戻された後に、接続端子Ｔ２より負荷ＬＦに供給されることになるので、オフ用電源部４は、前記余分な電流によって負荷ＬＦが誤動作をすることがないように、そのインピーダンスが高く設定されている。 The off power supply unit 4 is used during an off operation, and is configured to output a direct current based on the rectified current of the rectifier circuit unit 2. An upper limit is set for the output voltage of the power supply unit 4 for turning off, so that an excessive voltage is not applied between the input terminal of a later-described 3-terminal regulator RG of the stabilization circuit unit 7 and the ground. Current is passed to ground. Such an off power supply unit 4 can be configured using, for example, a resistor (not shown) for limiting current and a Zener diode (not shown) for clipping the voltage to make it constant. By the way, as described above, the excess current flowing to the ground is returned to the DC output terminal on the low potential side of the rectifier circuit unit 2 through the ground, and then supplied to the load LF from the connection terminal T2. The impedance of the power supply unit 4 for turning off is set high so that the load LF does not malfunction due to the excess current.

オン用電源部５は、オン動作時に用いられるものであって、整流回路部２の整流電流を元に直流電流を出力するように構成されている。このオン用電源部５では、オフ用電源部４と同様に、出力電圧に上限が設定されているが、オフ用電源部４とは異なり、後述するオン信号が入力された際に動作を開始し（直流電流を出力し）、後述するオフ信号が入力された際に動作を停止する（直流電流を出力しない）ように構成されている。また、オン用電源部５は、オン用電源部５が動作している場合には、整流回路部２の出力がオフ用電源部４に供給されないように、オフ用電源部４よりもインピーダンスが低く設定されている。 The on power supply unit 5 is used during an on operation, and is configured to output a direct current based on the rectified current of the rectifier circuit unit 2. In the ON power supply unit 5, an upper limit is set for the output voltage in the same manner as the OFF power supply unit 4. However, unlike the OFF power supply unit 4, the operation starts when an ON signal described later is input. (DC current is output), and the operation is stopped (no DC current is output) when an OFF signal to be described later is input. Further, the on power source unit 5 has an impedance higher than that of the off power source unit 4 so that the output of the rectifier circuit unit 2 is not supplied to the off power source unit 4 when the on power source unit 5 is operating. It is set low.

補助電源部６は、例えば、電解コンデンサなどの大容量のコンデンサや充電池からなる。この補助電源部６は、オフ用電源部４またはオン用電源部５が出力する直流電流により充電される。また、補助電源部６は、主開閉部１または補助開閉部１０がオンである際（すなわち、オン用電源部５に整流回路部２の整流電流が供給されていないとき）に、オン用電源部５の代わりに直流電流を出力するようになっている。なお、補助電源部６とオン用電源部５との間には、補助電源部６からオン用電源部５側に電流が流れることを防止する逆流阻止用ダイオードＤが介在されている。 The auxiliary power supply unit 6 includes, for example, a large capacity capacitor such as an electrolytic capacitor or a rechargeable battery. The auxiliary power supply unit 6 is charged by a direct current output from the off power supply unit 4 or the on power supply unit 5. Further, the auxiliary power supply unit 6 is turned on when the main switching unit 1 or the auxiliary switching unit 10 is on (that is, when the rectified current of the rectifying circuit unit 2 is not supplied to the on power supply unit 5). Instead of the unit 5, a direct current is output. Note that a reverse current blocking diode D is interposed between the auxiliary power supply unit 6 and the on power supply unit 5 to prevent current from flowing from the auxiliary power supply unit 6 to the on power supply unit 5 side.

安定化回路部（安定化電源部）７は、例えば、３端子レギュレータＲＧを有している。３端子レギュレータＲＧの入力端子は、補助電源部６の高電位側に接続されており、出力端子は、制御機能部Ｆの制御部８に接続されている。したがって、安定化回路部７は、オフ用電源部４またはオン用電源部５または補助電源部６の出力電圧（すなわちオフ用電源部４とオン用電源部５と補助電源部６のいずれかの出力電圧）を安定化してなる安定化電圧（３端子レギュレータＲＧの出力電圧）を制御機能部Ｆに印加するように構成されている。なお、３端子レギュレータＲＧの出力端子とグランドの間にはコンデンサＣ２および電解コンデンサＣ３の並列回路が接続されており、これらコンデンサＣ２および電解コンデンサＣ３は、３端子レギュレータＲＧの規格に応じた値に設定され、３端子レギュレータＲＧの動作を安定化するために使用される。 The stabilization circuit unit (stabilized power supply unit) 7 includes, for example, a three-terminal regulator RG. The input terminal of the three-terminal regulator RG is connected to the high potential side of the auxiliary power supply unit 6, and the output terminal is connected to the control unit 8 of the control function unit F. Therefore, the stabilization circuit unit 7 outputs the output voltage of the off power supply unit 4 or the on power supply unit 5 or the auxiliary power supply unit 6 (that is, any one of the off power supply unit 4, the on power supply unit 5, and the auxiliary power supply unit 6). A stabilized voltage (an output voltage of the three-terminal regulator RG) obtained by stabilizing the output voltage) is applied to the control function unit F. Note that a parallel circuit of a capacitor C2 and an electrolytic capacitor C3 is connected between the output terminal of the three-terminal regulator RG and the ground, and these capacitors C2 and electrolytic capacitor C3 have values according to the standards of the three-terminal regulator RG. Set and used to stabilize the operation of the three-terminal regulator RG.

ところで、オン用電源部５の出力端とダイオードＤとの接続点には、電圧検出部１２が接続されている。この電圧検出部１２は、補助電源部６の充電が完了しているか否かを判定するものであって、補助電源部６の充電が完了していれば（または、補助電源部６の充電電圧が所定電圧、例えば、補助開閉部１０がオンとなってから主開閉部１がオフとなるまでの間に、つまり、オン用電源部５から直流電流が出力されない期間に、制御機能部Ｆを継続して動作させるために必要な電圧以上であれば）、制御部８に充電完了信号（充電終了信号）を出力するように構成されている。 By the way, a voltage detection unit 12 is connected to a connection point between the output terminal of the on power supply unit 5 and the diode D. The voltage detection unit 12 determines whether or not the auxiliary power supply unit 6 has been charged. If the auxiliary power supply unit 6 has been charged (or the charging voltage of the auxiliary power supply unit 6). Is set to a predetermined voltage, for example, between the time when the auxiliary opening / closing part 10 is turned on and the time when the main opening / closing part 1 is turned off, that is, during the period when no direct current is output from the power supply part 5 for turning on. If the voltage is higher than the voltage necessary for continuous operation), the controller 8 is configured to output a charge completion signal (charge end signal).

制御部８は、上述したように、操作信号が入力される毎にオフ動作とオン動作を切り換えるためのものであって、例えば、ＣＰＵなどのハードウェア資源と、ハードウェア資源と共動するソフトウェアとにより実現されている。 As described above, the control unit 8 is for switching between an off operation and an on operation each time an operation signal is input. For example, a hardware resource such as a CPU and software cooperating with the hardware resource. And is realized.

制御部８は、２線式スイッチ装置ＳＷがオフ動作しているときに操作信号が入力されると、前述のオン信号をオン用電源部５に出力してオン用電源部５の動作を開始させ、２線式スイッチ装置ＳＷがオン動作しているときに操作信号が入力されると、前述のオフ信号をオン用電源部５に出力してオン用電源部５の動作を停止させるように構成されている。 When an operation signal is input when the two-wire switch device SW is in an off operation, the control unit 8 outputs the aforementioned on signal to the on power source unit 5 and starts the operation of the on power source unit 5. When an operation signal is input while the two-wire switch device SW is on, the above-described off signal is output to the on power source 5 to stop the operation of the on power source 5. It is configured.

また、制御部８は、オン用電源部５にオン信号を出力してからオフ信号を出力するまでの間（オン用電源部５が動作している間）であるオン動作時に、電圧検出部１２から充電完了信号が入力されると、第２駆動回路部１１に前述の制御信号を出力するように構成されている。ここで、第２駆動回路部１１は、少なくとも制御信号が入力されている間、補助開閉部１０をオンして整流回路部２の直流出力端子間を短絡するから、制御部８が制御信号を出力する期間は、整流回路部２の直流出力端子間を短絡した電流（補助開閉部１０を通過した電流）によって第１駆動回路部１１の駆動用コンデンサの充電電圧が主開閉部１をオンする電圧以上となるような期間に設定される。なお、制御部８は、制御信号の出力期間を、内蔵されたタイマ（図示せず）によって計時している。 The control unit 8 also includes a voltage detection unit during an on operation that is from when the on signal is output to the on power source unit 5 until the off signal is output (while the on power source unit 5 is operating). When a charge completion signal is input from 12, the control signal is output to the second drive circuit unit 11. Here, since the second drive circuit unit 11 turns on the auxiliary opening / closing unit 10 and short-circuits the DC output terminals of the rectifier circuit unit 2 at least while the control signal is input, the control unit 8 outputs the control signal. During the output period, the charging voltage of the driving capacitor of the first driving circuit unit 11 turns on the main switching unit 1 due to the current short-circuited between the DC output terminals of the rectifying circuit unit 2 (current passing through the auxiliary switching unit 10). The period is set to be equal to or higher than the voltage. The control unit 8 measures the output period of the control signal with a built-in timer (not shown).

以上により図２に示す２線式スイッチ装置ＳＷは構成されており、まず、その起動時の動作について説明する。ここで、２線式スイッチ装置ＳＷは、交流電源ＡＣに接続されていない状態では、主開閉部１および補助開閉部１０それぞれはオフであり、オン用電源部５、制御部８、および機能部９それぞれの動作も停止している。 The two-wire switch device SW shown in FIG. 2 is configured as described above. First, the operation at the time of activation will be described. Here, in the state where the two-wire switch device SW is not connected to the AC power source AC, the main opening / closing part 1 and the auxiliary opening / closing part 10 are each off, and the on power supply part 5, the control part 8, and the function part 9 Each operation is also stopped.

２線式スイッチ装置ＳＷの起動は、接続端子Ｔ１，Ｔ２に、交流電源ＡＣおよび負荷ＬＦからなる直列回路を接続して交流電源ＡＣより２線式スイッチ装置ＳＷに給電することにより行われる。このとき、主開閉部１がオフであるから、交流電源ＡＣから負荷ＬＦには十分な電流が供給されず、負荷ＬＦの動作は停止し、交流電源ＡＣの交流電流は、整流回路部２により脈流に整流されて出力される。整流回路部２から出力された脈流はオフ用電源部４に入力され、オフ用電源部４からは直流電流が出力される。オフ用電源部４の出力が安定化回路部７により安定化されて制御機能部Ｆに供給されることにより、制御機能部Ｆの動作が開始して、２線式スイッチ装置ＳＷの起動が完了する。 The two-wire switch device SW is activated by connecting a series circuit including an AC power supply AC and a load LF to the connection terminals T1 and T2 and supplying power to the two-wire switch device SW from the AC power supply AC. At this time, since the main switching unit 1 is off, sufficient current is not supplied from the AC power source AC to the load LF, the operation of the load LF is stopped, and the AC current of the AC power source AC is Rectified into pulsating flow and output. The pulsating current output from the rectifier circuit unit 2 is input to the off power source unit 4, and a direct current is output from the off power source unit 4. The output of the off power supply unit 4 is stabilized by the stabilization circuit unit 7 and supplied to the control function unit F, whereby the operation of the control function unit F starts and the start of the two-wire switch device SW is completed. To do.

次に、図２に示す２線式スイッチ装置ＳＷのオフ動作およびオン動作について説明する。２線式スイッチ装置ＳＷがオフ動作を行っている場合には、主開閉部１および補助開閉部１０それぞれはオフであり、オン用電源部５の動作が停止している。したがって、交流電源ＡＣから負荷ＬＦには十分な電流が供給されず、負荷ＬＦの動作は停止し、交流電源ＡＣの交流電流は、整流回路部２により脈流に整流されて出力される。整流回路部２から出力された脈流はオフ用電源部４に入力され、オフ用電源部４からは直流電流が出力され、この直流電流は、安定化回路部７に入力され、安定化回路部７によって安定化されて制御部機能部Ｆに供給される。つまり、２線式スイッチ装置ＳＷのオフ動作時には、オフ用電源部４が制御機能部Ｆに給電を行う。 Next, an off operation and an on operation of the two-wire switch device SW shown in FIG. 2 will be described. When the two-wire switch device SW is performing an off operation, each of the main opening / closing unit 1 and the auxiliary opening / closing unit 10 is off, and the operation of the on power supply unit 5 is stopped. Accordingly, a sufficient current is not supplied from the AC power supply AC to the load LF, the operation of the load LF is stopped, and the AC current of the AC power supply AC is rectified into a pulsating flow by the rectifier circuit unit 2 and output. The pulsating current output from the rectifier circuit unit 2 is input to the off power source unit 4, and a direct current is output from the off power source unit 4. This direct current is input to the stabilization circuit unit 7, and the stabilization circuit It is stabilized by the unit 7 and supplied to the control unit function unit F. That is, when the two-wire switch device SW is turned off, the power supply unit 4 for turning off supplies power to the control function unit F.

２線式スイッチ装置ＳＷのオフ動作時に、機能部９から制御部８に操作信号が出力されると、制御部８は、オン用電源部５にオン信号を出力してオン用電源部５の動作を開始させる。これによりオン用電源部５から直流電流を出力され、この直流電流は、安定化回路部７に入力され、安定化回路部７によって安定化されて制御機能部Ｆに供給される。また、オン用電源部５から出力された直流電流によって補助電源部６が充電される。なお、オン用電源部５が動作を行っている間は、整流回路部２の出力は殆どがオン用電源部５に入力されるため、オフ用電源部４からは直流電流が殆ど出力されなくなる。 When an operation signal is output from the function unit 9 to the control unit 8 during the OFF operation of the two-wire switch device SW, the control unit 8 outputs an ON signal to the ON power supply unit 5 to output the ON power supply unit 5. Start operation. As a result, a DC current is output from the ON power supply unit 5, and this DC current is input to the stabilization circuit unit 7, stabilized by the stabilization circuit unit 7, and supplied to the control function unit F. In addition, the auxiliary power supply unit 6 is charged by the direct current output from the power supply unit 5 for turning on. During the operation of the on power supply unit 5, most of the output of the rectifier circuit unit 2 is input to the on power supply unit 5, so that no direct current is output from the off power supply unit 4. .

オン用電源部５が出力する直流電流によって補助電源部６の充電が完了すると（充電電圧が前記所定電圧以上となると）、電圧検出部１２から制御部８に充電完了信号が出力される。制御部８は、充電完了信号が入力されると、第２駆動回路部１１に制御信号を出力して補助開閉部１０をオンさせる。補助開閉部１０がオンになると、整流回路部２の直流出力端子間が短絡され、補助開閉部１０を通る短絡電流によって、第１駆動回路部３の駆動用コンデンサが充電される。そして、ゲート電流が所定の閾値以上となった際に、主開閉部１がオンに切り換わり、交流電源ＡＣから負荷ＬＦに十分な大きさの電流が供給され、負荷ＬＦの動作が開始される。 When the charging of the auxiliary power supply unit 6 is completed by the direct current output from the on power supply unit 5 (when the charging voltage becomes equal to or higher than the predetermined voltage), a voltage completion signal is output from the voltage detection unit 12 to the control unit 8. When the charging completion signal is input, the control unit 8 outputs a control signal to the second drive circuit unit 11 to turn on the auxiliary opening / closing unit 10. When the auxiliary switching unit 10 is turned on, the DC output terminals of the rectifying circuit unit 2 are short-circuited, and the driving capacitor of the first drive circuit unit 3 is charged by the short-circuit current passing through the auxiliary switching unit 10. When the gate current becomes equal to or greater than a predetermined threshold value, the main switching unit 1 is turned on, a sufficiently large current is supplied from the AC power supply AC to the load LF, and the operation of the load LF is started. .

ここで、主開閉部１または補助開閉部１０がオンである期間は、オン用電源部５に交流電源ＡＣの電力が供給されないから、オン用電源部５から直流電流が出力されないが、この場合には、オン用電源部５の代わりに補助電源部６が直流電流を出力し、この直流電流が安定化回路部７に入力されることで、制御機能部Ｆに電力が供給される。つまり、主開閉部１または補助開閉部１０がオンである期間は、補助電源部６が制御機能部Ｆに電力を供給する。 Here, during the period in which the main opening / closing part 1 or the auxiliary opening / closing part 10 is on, since the power of the AC power supply AC is not supplied to the power supply part 5 for turning on, no direct current is output from the power supply part 5 for turning on. In this case, the auxiliary power supply unit 6 outputs a DC current instead of the ON power supply unit 5, and the DC current is input to the stabilization circuit unit 7, whereby electric power is supplied to the control function unit F. That is, the auxiliary power supply unit 6 supplies power to the control function unit F during a period in which the main switching unit 1 or the auxiliary switching unit 10 is on.

ところで、主開閉部１がオンになった後には、主開閉部１は、３端子双方向性サイリスタであるため、交流電源ＡＣの交流電圧のゼロクロス点でオンからオフに切り換わり、交流電源ＡＣから負荷ＬＦへの電力供給が中止される。そのため、主開閉部１がゼロクロス点でオフに切り換わった場合には、交流電源ＡＣから整流回路部２に交流電流が入力され、整流回路部２から出力された整流電流は、オン用電源部５に入力され、オン用電源部５から直流電流が出力される。そのため、補助電源部６は、再度、オン用電源部５が出力する直流電流により充電され、充電が完了した際に電圧検出部１２から制御部８に充電完了信号が出力され、制御部８は、第２駆動回路部１１に制御信号を出力し、これにより上述した動作が行われて主開閉部１が再度オンに切り換えられる。 By the way, after the main opening / closing part 1 is turned on, the main opening / closing part 1 is a three-terminal bidirectional thyristor. Therefore, the main opening / closing part 1 is switched from ON to OFF at the zero cross point of the AC voltage of the AC power supply AC. To the load LF is stopped. Therefore, when the main switching unit 1 is switched off at the zero cross point, an alternating current is input from the alternating current power supply AC to the rectifying circuit unit 2, and the rectified current output from the rectifying circuit unit 2 is 5, and a direct current is output from the ON power supply unit 5. Therefore, the auxiliary power supply unit 6 is charged again by the direct current output from the power supply unit 5 for turning on, and when charging is completed, a charge completion signal is output from the voltage detection unit 12 to the control unit 8. Then, a control signal is output to the second drive circuit unit 11, whereby the above-described operation is performed and the main opening / closing unit 1 is turned on again.

このように２線式スイッチ装置ＳＷのオン動作時には、主開閉部１をオンして交流電源ＡＣから負荷ＬＦに電力を供給する第１期間と、主開閉部１をオフして前記第１期間中に制御機能部Ｆの動作を行わせるために交流電源ＡＣにより補助電源部６を充電する第２期間とが存在し、第１期間と第２期間とが交互に繰り返されることで、交流電源ＡＣから負荷ＬＦへ電力が供給されることになる。そして、第２期間は、交流電源ＡＣの半周期毎に存在するが、このような第２期間は第１期間に比べて非常に短い時間であるから、負荷ＬＦの動作に影響を及ぼすことはない。 As described above, when the two-wire switch device SW is turned on, the main switching unit 1 is turned on to supply power from the AC power supply AC to the load LF, and the main switching unit 1 is turned off to the first period. There is a second period in which the auxiliary power supply unit 6 is charged by the AC power supply AC in order to cause the operation of the control function unit F, and the first period and the second period are alternately repeated, whereby the AC power supply Electric power is supplied from the AC to the load LF. The second period is present every half cycle of the AC power supply AC. Since the second period is much shorter than the first period, the operation of the load LF is not affected. Absent.

一方、制御機能部Ｆにおいて、機能部９から制御部８に操作信号が出力されると、制御部８は、オン用電源部５にオフ信号を出力してオン用電源部５の動作を停止させる。制御部８は、オン用電源部５の動作を停止させた後は（すなわちオフ動作時には）、充電完了信号が入力されても第２駆動回路部１１に制御信号を出力しなくなり、主開閉部１は、ゼロクロス点で一旦オフとなった後には、オンに切り換わることなくオフ状態が維持される。つまり、２線式スイッチ装置ＳＷは、オン動作時に機能部９から制御部８に操作信号が出力されることによって、オン動作からオフ動作に切り換えられる。 On the other hand, in the control function unit F, when an operation signal is output from the function unit 9 to the control unit 8, the control unit 8 outputs an off signal to the on power supply unit 5 and stops the operation of the on power supply unit 5. Let After stopping the operation of the on power supply unit 5 (that is, during the off operation), the control unit 8 does not output a control signal to the second drive circuit unit 11 even if a charge completion signal is input, and the main switching unit 1 is kept off without being turned on once it is turned off at the zero cross point. That is, the two-wire switch device SW is switched from the on operation to the off operation by outputting an operation signal from the function unit 9 to the control unit 8 during the on operation.

ところで、図２に示す２線式スイッチ装置ＳＷのように、２線式スイッチ装置ＳＷに種々の機能を持たせるために機能部９を設けると、当然ながら、２線式スイッチ装置ＳＷの消費電力が増えてしまう。 By the way, when the functional unit 9 is provided in order to give various functions to the two-wire switch device SW like the two-wire switch device SW shown in FIG. Will increase.

そこで、制御部８に、安定化回路部７から機能部９への給電路をオン・オフする機能を持たせて、機能部９に供給する電力を２線式スイッチ装置ＳＷの機能（制御機能部Ｆの機能）が低下しない程度に間引くことにより、２線式スイッチ装置ＳＷの消費電力の低減を図ることが提案されている。 Therefore, the control unit 8 has a function of turning on and off the power supply path from the stabilization circuit unit 7 to the function unit 9, and the power supplied to the function unit 9 is supplied to the function (control function) of the two-wire switch device SW. It has been proposed to reduce the power consumption of the two-wire switch device SW by thinning out to such an extent that the function of the part F does not deteriorate.

このようにすれば、制御部８が動作した後には、２線式スイッチ装置ＳＷの消費電力が低減されるから、負荷ＬＦに供給される電力が不足して、例えば、負荷ＬＦが照明器具である場合に、フラッシュや、フリッカ（ちらつき）などが発生したり、機能が低下したりすることを防止できる。 In this way, after the control unit 8 operates, the power consumption of the two-wire switch device SW is reduced, so that the power supplied to the load LF is insufficient, for example, the load LF is a lighting fixture. In some cases, it is possible to prevent a flash, flicker (flicker), or the like from occurring or a decrease in function.

なお、図２に示す２線式スイッチ装置ＳＷと同様のものとしては、図３に示す２線式スイッチ装置ＳＷが提案されている。図３に示す例では、制御部８を経由してではなく、安定化回路部７から電源コントロールＩＣ（例えば、イネーブル機能付レギュレータなど）からなる電源制御部ＰＣを経由して機能部９に電力が供給されるようになっている。ここで、制御部８は、電源制御部ＰＣの動作を制御（すなわち、機能部９に電力を供給するか否かを制御）するように構成されており、これによって図２に示す例と同様に、２線式スイッチ装置ＳＷの消費電力の低減を図っている。
特開２００１−１６８０４号公報 As a similar device to the two-wire switch device SW shown in FIG. 2, a two-wire switch device SW shown in FIG. 3 has been proposed. In the example shown in FIG. 3, power is not supplied to the functional unit 9 from the stabilization circuit unit 7 but via the power control unit PC including a power control IC (for example, a regulator with an enable function), not via the control unit 8. Is to be supplied. Here, the control unit 8 is configured to control the operation of the power supply control unit PC (that is, control whether or not to supply power to the function unit 9), which is similar to the example shown in FIG. In addition, the power consumption of the two-wire switch device SW is reduced.
Japanese Patent Laid-Open No. 2001-16804

上述したような図２，３に示す２線式スイッチ装置ＳＷでは、制御部８が動作した後には、機能部９に供給する電力が制御部８によって間引かれるから、消費電力の低減が図れる。しかしながら、２線式スイッチ装置ＳＷの起動時には、オフ用電源部４の出力電圧が低く、制御部８の動作を開始させるリセット電圧Ｖ_Ｒ以上となる安定化電圧が得られない場合があり、このような場合、制御部８が完全に動作せずに中途半端に動作してしまうため、制御部８が消費電力の多い状態で起動したり、制御部８による機能部９への電力供給が制限されなかったりするおそれがある。 In the two-wire switch device SW shown in FIGS. 2 and 3 as described above, the power supplied to the function unit 9 is thinned out by the control unit 8 after the control unit 8 is operated, so that power consumption can be reduced. . However, at the time of startup of the two-wire switch device SW, may output voltage of the off-power source unit 4 is low, not stabilized voltage is obtained as the above reset voltage V _R to start the operation of the control unit 8, the In such a case, since the control unit 8 does not operate completely and operates halfway, the control unit 8 starts up with a large amount of power consumption, or the power supply to the functional unit 9 by the control unit 8 is limited. There is a risk of not being done.

そのため、安定化電圧がリセット電圧Ｖ_Ｒに達するまでは、図４に示すように、２線式スイッチ装置ＳＷの消費電流は、リセット電圧Ｖ_Ｒ以上の安定化電圧が制御部８に印加された後（すなわち動作時）よりも、リセット電圧Ｖ_Ｒ未満の安定化電圧が制御部８に印加される前（すなわち起動時）のほうが大きくなる。 Therefore, until the stabilization voltage reaches the reset voltage V _R, as shown in FIG. 4, the current consumption of the two-wire switch device SW is reset voltage V _R or the stabilized voltage is applied to the control unit 8 after (or operating time) than, more previous (i.e. during startup) that stabilized voltage lower than the reset voltage V _R is applied to the control unit 8 is increased.

したがって、図２，３に示す従来の２線式スイッチ装置ＳＷでは、制御部８が動作を開始した後の動作時には、消費電力の低減が図れるが、制御部８が動作を開始するまでの起動時には、消費電力の低減が図れないため、例えば、負荷ＬＦとしてインピーダンスが高い照明器具（例えば、電子スタータ式の照明器具）を用いた際には、起動時に必要な電力が不足して２線式スイッチ装置ＳＷが起動しない場合があった。 Therefore, in the conventional two-wire switch device SW shown in FIGS. 2 and 3, the power consumption can be reduced during the operation after the control unit 8 starts the operation, but the start-up until the control unit 8 starts the operation. In some cases, power consumption cannot be reduced. For example, when a high-impedance lighting device (for example, an electronic starter-type lighting device) is used as the load LF, the power required for startup is insufficient and the two-wire type. There was a case where the switch device SW did not start.

このように従来の２線式スイッチ装置ＳＷでは、起動時に、制御部８の動作に必要な電圧に満たない安定化電圧が印加されるため、制御部８の動作が中途半端に行われ、その結果、２線式スイッチ装置ＳＷの動作が不安定になったり、場合によっては、２線式スイッチ装置ＳＷが起動しなくなったりするという問題が生じていた。 As described above, in the conventional two-wire switch device SW, since the stabilization voltage that is less than the voltage required for the operation of the control unit 8 is applied at the time of startup, the operation of the control unit 8 is performed halfway. As a result, there has been a problem that the operation of the two-wire switch device SW becomes unstable, or in some cases, the two-wire switch device SW does not start.

本発明は上述の点に鑑みて為されたもので、その目的は、起動時の性能を改善できる２線式スイッチ装置を提供することにある。 The present invention has been made in view of the above points, and an object of the present invention is to provide a two-wire switch device capable of improving the performance at the time of startup.

上述の課題を解決するために、請求項１の発明では、負荷が交流電源を介して両端間に接続され交流電源のゼロクロス点でオフに切り換わる常開型の主開閉部と、操作信号が入力されると交流電源から負荷に給電しないオフ動作と交流電源から負荷に給電するオン動作とを切り換える制御部および当該制御部とともに所定の機能を発揮する機能部からなる制御機能部と、主開閉部の両端それぞれに入力端子が接続され交流電源の交流電流を整流して出力する整流回路部と、整流回路部の一方の入力端子と主開閉部との間に接続され整流回路部の出力端子間が短絡されると主開閉部をオンに切り換える駆動回路部と、整流回路部の出力端子間に接続されオンに切り換えられた際に出力端子間を短絡する常開型の補助開閉部と、前記オフ動作時に用いられ整流回路部の整流電流を元に直流電流を出力するオフ用電源部と、前記オン動作時に用いられ整流回路部の整流電流を元に直流電流を出力するオン用電源部と、少なくともオン用電源部の直流電流により充電され主開閉部または補助開閉部がオンである際にオン用電源部の代わりに直流電流を出力する補助電源部と、オフ用電源部またはオン用電源部または補助電源部の出力電圧を安定化してなる安定化電圧を制御機能部に印加する安定化回路部と、補助電源部の充電電圧および前記出力電圧を検出する電圧検出部とを備え、電圧検出部は、前記充電電圧により補助電源部の充電が終了したと判定した際に充電完了信号を制御部に出力する機能と、前記出力電圧が制御機能部の動作開始に必要な安定化電圧が得られる電圧以上であれば給電開始信号を安定化回路部に出力する機能とを有し、制御部は、前記オン動作時に充電完了信号が入力されると、補助開閉部をオンに切り換える制御信号を出力して主開閉部をオンに切り換えるように構成され、安定化回路部は、給電開始信号が入力された際に安定化電圧を制御機能部に印加するように構成されていることを特徴とする。 In order to solve the above-mentioned problems, in the invention of claim 1, a load is connected between both ends via an AC power source, and a normally open type main opening / closing portion that switches off at the zero cross point of the AC power source, and an operation signal are provided. A control function unit comprising a control unit that switches between an off operation that does not supply power to the load from the AC power source and an on operation that supplies power to the load from the AC power source, a control function unit that performs a predetermined function together with the control unit, and main switching A rectifier circuit unit that rectifies and outputs an alternating current of an AC power source, with input terminals connected to both ends of the unit, and an output terminal of the rectifier circuit unit that is connected between one input terminal of the rectifier circuit unit and the main switching unit A drive circuit unit that turns on the main switching unit when the circuit is short-circuited, and a normally-open auxiliary switching unit that is connected between the output terminals of the rectification circuit unit and short-circuits between the output terminals when switched on, During the off operation An off power source that outputs a direct current based on the rectified current of the rectifier circuit, an on power source that outputs a direct current based on the rectified current of the rectifier circuit used during the on operation, and at least on Auxiliary power supply unit that outputs DC current instead of the on power supply unit when the main switching unit or the auxiliary switching unit is charged and is charged by the direct current of the main power supply unit, and the off power supply unit or the on power supply unit or auxiliary A stabilization circuit unit that applies a stabilization voltage obtained by stabilizing the output voltage of the power supply unit to the control function unit, and a voltage detection unit that detects the charging voltage of the auxiliary power supply unit and the output voltage, the voltage detection unit is A function of outputting a charge completion signal to the control unit when it is determined that charging of the auxiliary power supply unit is completed by the charging voltage, and a voltage at which the output voltage provides a stabilization voltage necessary for starting the operation of the control function unit Or more A function of outputting a power supply start signal to the stabilization circuit unit, and when the charging completion signal is input during the on operation, the control unit outputs a control signal for switching on the auxiliary opening / closing unit and outputs the main switching unit The stabilization circuit unit is configured to apply a stabilization voltage to the control function unit when a power supply start signal is input.

請求項１の発明によれば、オフ用電源部またはオン用電源部または補助電源部の出力電圧が、制御機能部の動作に必要な安定化電圧が得られる電圧以上となった際に、制御機能部に安定化電圧を印加するので、制御機能部の動作に必要な電圧に満たない安定化電圧が制御機能部に印加されることによって制御機能部の動作が中途半端に行われて２線式スイッチ装置の動作が不安定になったり、交流電源から得られる電力を無駄に消費したりしてしまうことを防止できるから、起動時に制御機能部を確実に動作させることができるようになり、起動時の性能を改善できる。 According to the first aspect of the present invention, when the output voltage of the off power supply unit or the on power supply unit or the auxiliary power supply unit becomes equal to or higher than a voltage at which a stabilization voltage necessary for the operation of the control function unit is obtained, the control is performed. Since the stabilization voltage is applied to the function unit, the control function unit is operated halfway by applying a stabilization voltage less than the voltage necessary for the operation of the control function unit to the control function unit. Since it is possible to prevent the operation of the type switch device from becoming unstable or consuming wasteful power from the AC power supply, the control function unit can be reliably operated at the time of startup, The startup performance can be improved.

本発明は、起動時に制御機能部を確実に動作させることができるようになり、起動時の性能を改善できるという効果を奏する。 According to the present invention, the control function unit can be reliably operated at the time of activation, and the performance at the time of activation can be improved.

本発明の一実施形態の２線式スイッチ装置ＳＷは、図２に示す従来例と同様に、屋内に設けられたスイッチボックスから引き出した商用電源の２本の屋内配線を用いて商用電源および負荷に接続され、主に屋内の壁に埋め込み設置された状態で使用される２線式配線器具であり、図１に示すように、負荷ＬＦが交流電源ＡＣを介して両端間に接続された３端子双方向性サイリスタからなる主開閉部１を備える。また、操作信号が入力されると２線式スイッチ装置ＳＷのオフ動作とオン動作とを切り換える制御部８、および制御部８とともに所定の機能を発揮する機能部９からなる制御機能部Ｆを備えている。なお、機能部９は、２線式スイッチ装置ＳＷのオン動作とオフ動作を切り換えるための操作信号を制御部２に出力するように構成されている。 As in the conventional example shown in FIG. 2, the two-wire switch device SW according to one embodiment of the present invention uses a commercial power source and a load using two indoor wirings of a commercial power source drawn from a switch box provided indoors. Is a two-wire wiring device used mainly in a state of being embedded and installed in an indoor wall. As shown in FIG. 1, a load LF is connected between both ends via an AC power source AC. A main opening / closing part 1 comprising a terminal bidirectional thyristor is provided. In addition, a control function unit F including a control unit 8 that switches between an off operation and an on operation of the two-wire switch device SW when an operation signal is input, and a function unit 9 that performs a predetermined function together with the control unit 8 is provided. ing. The function unit 9 is configured to output an operation signal for switching between the ON operation and the OFF operation of the two-wire switch device SW to the control unit 2.

また、本実施形態の２線式スイッチ装置ＳＷは、交流電源ＡＣの電力を制御機能部Ｆに供給するために、主開閉部１の両端それぞれに入力端子が接続され交流電源ＡＣの交流電流を整流して出力する整流回路部２と、オフ動作時に用いられ整流回路部２の整流電流を元に直流電流を出力するオフ用電源部４と、オン動作時に用いられ整流回路部２の整流電流を元に直流電流を出力するオン用電源部５と、オフ用電源部４またはオン用電源部５の直流電流により充電されオン用電源部５から直流電流が出力されていないときにオン用電源部５の代わりに直流電流を出力する補助電源部６と、オフ用電源部４またはオン用電源部５または補助電源部６の出力を安定化して制御機能部Ｆに供給する安定化回路部７とを備える。 In addition, the two-wire switch device SW of the present embodiment has an input terminal connected to each of both ends of the main switching unit 1 to supply the AC current of the AC power source AC in order to supply the power of the AC power source AC to the control function unit F. The rectifying circuit unit 2 for rectifying and outputting, the off power source unit 4 for outputting a direct current based on the rectified current of the rectifying circuit unit 2 used during the off operation, and the rectified current of the rectifying circuit unit 2 used during the on operation ON power supply unit 5 that outputs a DC current based on the power supply, and an ON power supply unit 5 that is charged by a DC current of the OFF power supply unit 4 or the ON power supply unit 5 and that is not outputting a DC current from the ON power supply unit 5 An auxiliary power supply unit 6 that outputs a direct current instead of the unit 5, and a stabilization circuit unit 7 that stabilizes the output of the off power supply unit 4 or the on power supply unit 5 or the auxiliary power supply unit 6 and supplies it to the control function unit F With.

さらに、本実施形態の２線式スイッチ装置ＳＷは、制御部８により主開閉部１をオンに切り換えるために、整流回路部２の一方の交流入力端子と主開閉部１の負荷側端子との間に接続され整流回路部２の直流出力端子間が短絡されると主開閉部１をオンに切り換える第１駆動回路部３と、整流回路部２の直流出力端子間に接続されオンに切り換えられた際に直流出力端子間を短絡する常開型の補助開閉部１０と、制御部８の制御信号が入力された際に補助開閉部１０をオンに切り換える第２駆動回路部１１とを備えている。 Furthermore, the two-wire switch device SW of the present embodiment is configured so that the control unit 8 switches the main switching unit 1 on between one AC input terminal of the rectifier circuit unit 2 and the load side terminal of the main switching unit 1. When the DC output terminals of the rectifier circuit unit 2 are short-circuited, the first drive circuit unit 3 that switches on the main switching unit 1 and the DC output terminal of the rectifier circuit unit 2 are switched on and switched on. A normally open type auxiliary opening / closing unit 10 that short-circuits the DC output terminals when the control signal is input, and a second drive circuit unit 11 that turns on the auxiliary opening / closing unit 10 when a control signal of the control unit 8 is input. Yes.

本実施形態の２線式スイッチ装置ＳＷは、主開閉部１がオンである期間中に、制御部８および機能部９の動作を継続して行えるかどうかを判定するために、補助電源部６の充電電圧を検出し補助電源部６の充電が終了した際に充電完了信号を制御部８に出力する電圧検出部（以下、「第１電圧検出部」と称する）１２に加えて、補助電源部６の高電位側の出力端と安定化回路部７の３端子レギュレータＲＧの入力端子との接続点と、グランドとの間の電位差（すなわち、オフ用電源部４またはオン用電源部５または補助電源部６の出力電圧）を検出する電圧検出部（以下、「第２電圧検出部」と称する）１３を有している。 The two-wire switch device SW of the present embodiment is configured so that the auxiliary power supply unit 6 determines whether or not the operation of the control unit 8 and the function unit 9 can be continued during the period when the main opening / closing unit 1 is on. In addition to a voltage detection unit (hereinafter referred to as “first voltage detection unit”) 12 that detects a charging voltage of the auxiliary power supply unit 6 and outputs a charging completion signal to the control unit 8 when charging of the auxiliary power supply unit 6 is completed, Potential difference between the connection point of the output terminal on the high potential side of the unit 6 and the input terminal of the three-terminal regulator RG of the stabilization circuit unit 7 and the ground (that is, the power supply unit 4 for off or the power unit 5 for on or A voltage detection unit (hereinafter referred to as “second voltage detection unit”) 13 for detecting the output voltage of the auxiliary power supply unit 6 is included.

この第２電圧検出部１３は、検出した出力電圧が、安定化回路部７において制御機能部Ｆの動作開始に必要な安定化電圧が得られる電圧（以下、「必要電圧」と称する）以上であれば給電開始信号を安定化回路部７に出力するように構成されている。 The second voltage detection unit 13 has a detected output voltage equal to or higher than a voltage (hereinafter referred to as “necessary voltage”) at which the stabilization circuit unit 7 obtains a stabilization voltage necessary for starting the operation of the control function unit F. If there is, the feed start signal is output to the stabilization circuit unit 7.

つまり、本実施形態の２線式スイッチ装置ＳＷは、第１電圧検出部１２および第２電圧検出部１３からなる電圧検出部１４を備える点で図２に示すような従来例と異なっており、この電圧検出部１４は、補助電源部６の充電電圧により補助電源部６の充電が終了したと判定した際に充電完了信号を制御部８に出力する機能と、前記出力電圧が必要電圧以上であれば給電開始信号を安定化回路部７に出力する機能とを有している。 That is, the two-wire switch device SW of the present embodiment is different from the conventional example as shown in FIG. 2 in that the voltage detection unit 14 including the first voltage detection unit 12 and the second voltage detection unit 13 is provided. The voltage detection unit 14 outputs a charge completion signal to the control unit 8 when it is determined that charging of the auxiliary power supply unit 6 is completed by the charging voltage of the auxiliary power supply unit 6, and the output voltage is equal to or higher than a necessary voltage. If there is, it has a function of outputting a power supply start signal to the stabilization circuit unit 7.

これに対応して、本実施形態における安定化回路部７は、イネーブル機能（出力を行うか否かを選択できる機能）付の３端子レギュレータＲＧを備えており、この３端子レギュレータＲＧは、第２電圧検出部１３の給電開始信号が入力された際に、前記出力電圧を安定化してなる安定化電圧を制御機能部Ｆに印加するように構成されている。 Correspondingly, the stabilization circuit unit 7 in this embodiment includes a three-terminal regulator RG with an enable function (a function for selecting whether to perform output), and the three-terminal regulator RG When a power supply start signal of the two-voltage detection unit 13 is input, a stabilization voltage obtained by stabilizing the output voltage is applied to the control function unit F.

すなわち、本実施形態における安定化回路部７は、給電開始信号が入力された際に安定化電圧を制御機能部Ｆに印加するように構成されている点で、単に出力電圧を安定化してなる安定化電圧を制御機能部Ｆに印加する従来例と異なっている。なお、このような安定化回路部７は、イネーブル機能付の３端子レギュレータＲＧを用いなくても、制御機能部Ｆとの間に、給電開始信号によりオンするようなスイッチング素子や、リレーなどのスイッチ装置などを設けることによっても実現できる。 That is, the stabilization circuit unit 7 in the present embodiment is simply configured to stabilize the output voltage in that the stabilization voltage is applied to the control function unit F when a power supply start signal is input. This is different from the conventional example in which the stabilization voltage is applied to the control function unit F. Note that such a stabilization circuit unit 7 does not use a three-terminal regulator RG with an enable function, such as a switching element that is turned on by a power supply start signal or a relay between the control function unit F and the like. This can also be realized by providing a switch device or the like.

一方、本実施形態の２線式スイッチ装置ＳＷにおける他の構成については、図２に示す従来例と同様であるから同一の符号を付して説明を省略する。 On the other hand, other configurations in the two-wire switch device SW of the present embodiment are the same as those in the conventional example shown in FIG.

次に、本実施形態の２線式スイッチ装置ＳＷにおける起動時の動作について説明する。ここで、２線式スイッチ装置ＳＷは、交流電源ＡＣに接続されていない状態では、主開閉部１および補助開閉部１０それぞれはオフであり、オン用電源部５、制御部８、および機能部９それぞれの動作も停止している。 Next, the operation at the time of starting in the two-wire switch device SW of this embodiment will be described. Here, in the state where the two-wire switch device SW is not connected to the AC power supply AC, the main opening / closing part 1 and the auxiliary opening / closing part 10 are off, and the on-power supply part 5, the control part 8, and the function part 9 Each operation is also stopped.

２線式スイッチ装置ＳＷの起動は、接続端子Ｔ１，Ｔ２に、交流電源ＡＣおよび負荷ＬＦからなる直列回路を接続して交流電源ＡＣより２線式スイッチ装置ＳＷに給電することにより行われる。このとき、主開閉部１がオフであるから、交流電源ＡＣから負荷ＬＦには十分な電流が供給されず、負荷ＬＦの動作は停止し、交流電源ＡＣの交流電流は、整流回路部２により脈流に整流されて出力される。整流回路部２から出力された脈流はオフ用電源部４に入力され、オフ用電源部４からは直流電流が出力される。 The two-wire switch device SW is activated by connecting a series circuit including an AC power supply AC and a load LF to the connection terminals T1 and T2 and supplying power to the two-wire switch device SW from the AC power supply AC. At this time, since the main switching unit 1 is off, sufficient current is not supplied from the AC power source AC to the load LF, the operation of the load LF is stopped, and the AC current of the AC power source AC is Rectified into pulsating flow and output. The pulsating current output from the rectifier circuit unit 2 is input to the off power source unit 4, and a direct current is output from the off power source unit 4.

このとき、安定化回路部７の入力電圧（起動時においては、オフ用電源部４の出力電圧）は、第２電圧検出部１３によって監視され、オフ用電源部４の出力電圧が必要電圧以上となった際に、第２電圧検出部１３から安定化回路部７に給電開始信号を出力して、安定化回路部７の安定化電圧を制御機能部Ｆに印加させて、制御機能部Ｆの動作を開始させる。 At this time, the input voltage of the stabilization circuit unit 7 (the output voltage of the off power supply unit 4 at the time of startup) is monitored by the second voltage detection unit 13, and the output voltage of the off power supply unit 4 exceeds the necessary voltage. At this time, the power supply start signal is output from the second voltage detection unit 13 to the stabilization circuit unit 7, and the stabilization voltage of the stabilization circuit unit 7 is applied to the control function unit F. Start the operation.

したがって、本実施形態の２線式スイッチ装置ＳＷでは、オフ用電源部４の出力電圧が、必要電圧未満である期間は、安定化回路部７から制御機能部Ｆには電力が供給されない。このように本実施形態の２線式スイッチ装置ＳＷでは、図２に示すような従来例とは異なり、安定化回路部７により制御機能部Ｆの動作開始に必要な安定化電圧が得られないときには、制御機能部Ｆには電力が供給されないから、起動時に制御部８などが中途半端に動作することが防止されている。 Therefore, in the two-wire switch device SW of the present embodiment, power is not supplied from the stabilization circuit unit 7 to the control function unit F during a period in which the output voltage of the off power supply unit 4 is less than the necessary voltage. As described above, in the two-wire switch device SW of the present embodiment, unlike the conventional example as shown in FIG. 2, the stabilization voltage required for starting the operation of the control function unit F cannot be obtained by the stabilization circuit unit 7. Sometimes, no power is supplied to the control function unit F, so that the control unit 8 or the like is prevented from operating halfway during startup.

一方、オフ用電源部４の出力電圧が必要電圧以上となった場合には、安定化回路部７により制御機能部Ｆに、制御機能部Ｆの動作開始に必要な安定化電圧が印加され、その結果、制御機能部Ｆが中途半端に動作することなく、安定して動作を開始することになり、２線式スイッチ装置ＳＷの起動が完了する。 On the other hand, when the output voltage of the power supply unit 4 for turning off exceeds the required voltage, the stabilization circuit unit 7 applies a stabilization voltage necessary for starting the operation of the control function unit F to the control function unit F. As a result, the control function unit F does not operate halfway and starts to operate stably, and the activation of the two-wire switch device SW is completed.

なお、本実施形態の２線式スイッチ装置ＳＷは、図２に示す従来例と同様のオフ動作およびオン動作を行うから、オン動作およびオフ動作については説明を省略する。 Note that the two-wire switch device SW of the present embodiment performs an off operation and an on operation similar to those of the conventional example shown in FIG. 2, and thus the description of the on operation and the off operation is omitted.

以上述べた本実施形態の２線式スイッチ装置ＳＷによれば、２線式スイッチ装置ＳＷの起動時に、オフ用電源部４の出力電圧が、制御機能部Ｆの動作に必要な安定化電圧が得られる電圧以上となった際に、制御機能部Ｆに安定化電圧を印加するので、制御機能部Ｆの動作に必要な電圧に満たない安定化電圧が制御機能部Ｆに印加されることによって制御機能部Ｆの動作が中途半端に行われて２線式スイッチ装置ＳＷの動作が不安定になったり、交流電源ＡＣから得られる電力を無駄に消費したりしてしまうことを防止できるから、起動時に制御機能部Ｆを確実に動作させることができるようになり、起動時の性能を改善できる。 According to the two-wire switch device SW of the present embodiment described above, when the two-wire switch device SW is started, the output voltage of the power supply unit 4 for off is the stabilization voltage necessary for the operation of the control function unit F. Since the stabilization voltage is applied to the control function unit F when the voltage exceeds the obtained voltage, a stabilization voltage that is less than the voltage required for the operation of the control function unit F is applied to the control function unit F. Since the operation of the control function unit F is performed halfway, the operation of the two-wire switch device SW can be prevented from becoming unstable and the power obtained from the AC power supply AC can be prevented from being wasted. The control function part F can be reliably operated at the time of starting, and the performance at the time of starting can be improved.

なお、本実施形態では、第２電圧検出部１３は、オフ用電源部４の出力電圧が、安定化回路部７により制御機能部Ｆの動作開始に必要な安定化電圧が得られる電圧以上であれば給電開始信号を安定化回路部７に出力するように構成されているが、オフ用電源部４の出力電圧が少なくとも制御機能部Ｆの制御部８の動作開始に必要な安定化電圧が得られる電圧以上であれば給電開始信号を安定化回路部７に出力するようにしてもよい。 In the present embodiment, the second voltage detection unit 13 is configured such that the output voltage of the power supply unit 4 for turning off is equal to or higher than a voltage at which the stabilization circuit unit 7 can obtain a stabilization voltage necessary for starting the operation of the control function unit F. If there is a power supply start signal, the power supply unit 4 is configured to output a power supply start signal to the stabilization circuit unit 7, but the output voltage of the power supply unit 4 for turning off is at least a stabilization voltage necessary for starting the operation of the control unit 8 of the control function unit F. If the voltage is higher than the obtained voltage, a power feeding start signal may be output to the stabilization circuit unit 7.

本発明の一実施形態の２線式スイッチ装置の回路説明図である。It is circuit explanatory drawing of the two-wire type switch apparatus of one Embodiment of this invention. 従来の２線式スイッチ装置の回路説明図である。It is circuit explanatory drawing of the conventional 2-wire type switch apparatus. 従来の２線式スイッチ装置の他例の回路説明図である。It is circuit explanatory drawing of the other example of the conventional 2-wire type switch apparatus. 同上における説明図である。It is explanatory drawing in the same as the above.

Explanation of symbols

１主開閉部
４オフ用電源部
５オン用電源部
６補助電源部
７安定化回路部
８制御部
９機能部
１４電圧検出部
ＳＷ２線式スイッチ装置
Ｆ制御機能部 DESCRIPTION OF SYMBOLS 1 Main opening / closing part 4 Power supply part for OFF 5 Power supply part for ON 6 Auxiliary power supply part 7 Stabilization circuit part 8 Control part 9 Function part 14 Voltage detection part SW 2-wire type switch apparatus F Control function part

Claims

A normally open main opening / closing part where the load is connected across the AC power supply and switched off at the zero crossing point of the AC power supply, and an off operation and AC power supply that does not feed the load from the AC power supply when an operation signal is input The control unit is configured to switch the on operation to supply power to the load from the control unit, the control function unit including a function unit that performs a predetermined function together with the control unit, and the input terminals are connected to both ends of the main opening / closing unit, and the AC current of the AC power source is A rectifying circuit unit that rectifies and outputs, and a driving circuit unit that is connected between one input terminal of the rectifying circuit unit and the main switching unit, and switches on the main switching unit when the output terminals of the rectifying circuit unit are short-circuited. And a normally-open auxiliary opening / closing section that is connected between the output terminals of the rectifier circuit section and short-circuits between the output terminals when switched on, and a direct current based on the rectified current of the rectifier circuit section used during the off operation. Output current An off power supply unit, an on power supply unit that outputs a direct current based on the rectified current of the rectifier circuit unit used during the on operation, and at least a main switching unit or auxiliary switching unit that is charged by the direct current of the on power supply unit Auxiliary power supply unit that outputs direct current instead of the on power supply unit when the unit is on, and a regulated voltage that stabilizes the output voltage of the off power supply unit, the on power supply unit, or the auxiliary power supply unit A stabilization circuit unit to be applied to the functional unit, and a voltage detection unit for detecting the charging voltage of the auxiliary power supply unit and the output voltage,
A voltage detection unit configured to output a charge completion signal to the control unit when it is determined that charging of the auxiliary power source unit has been completed by the charging voltage; and a stabilization voltage necessary for the output voltage to start operation of the control function unit Has a function of outputting a power supply start signal to the stabilization circuit unit if the voltage is equal to or higher than the voltage obtained,
The control unit is configured to output a control signal for switching on the auxiliary opening / closing unit and to switch on the main opening / closing unit when a charge completion signal is input during the on operation.
The stabilization circuit unit is configured to apply a stabilization voltage to the control function unit when a power supply start signal is input.