TW202018748A - Circuit breaker - Google Patents

Circuit breaker Download PDF

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Publication number
TW202018748A
TW202018748A TW108125534A TW108125534A TW202018748A TW 202018748 A TW202018748 A TW 202018748A TW 108125534 A TW108125534 A TW 108125534A TW 108125534 A TW108125534 A TW 108125534A TW 202018748 A TW202018748 A TW 202018748A
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circuit
trip
state
lever
contact
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TW108125534A
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Chinese (zh)
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TWI709990B (en
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森貢
三田祐也
出口智也
今枝隆之介
相良雄大
森岡遼太
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日商三菱電機股份有限公司
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle

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  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

A circuit breaker includes a transmission mechanism that moves a mover in accordance with the movement of a plunger of an electromagnetic solenoid to change it from a cut-off state to a closing state, and a drive circuit (70) that drives the electromagnetic solenoid. The drive circuit (70) includes a serial body (85) of a diode (86) and a current reduction unit (87) that reduces the current flowing through the diode (86), and the serial body (85) is connected to a coil (22) of the electromagnetic solenoid in parallel.

Description

斷路器breaker

本發明係關於將電磁螺線管利用於投入動作之斷路器。The present invention relates to a circuit breaker using an electromagnetic solenoid to be put into operation.

以往，已知有將電磁螺線管利用於投入動作之斷路器。例如，專利文獻1揭示一種斷路器，係具有連桿機構作為使電磁鐵的心棒(plunger)與可動接觸子連動之傳動機構，且藉由對電磁鐵的線圈通電使心棒移動，使可動接觸子投入到固定接觸子。 [先前技術文獻] [專利文獻]Conventionally, there has been known a circuit breaker that uses an electromagnetic solenoid to be put into operation. For example, Patent Document 1 discloses a circuit breaker that has a link mechanism as a transmission mechanism that links a plunger of an electromagnet with a movable contactor, and moves the mandrel by energizing the coil of the electromagnet to move the movable contactor Put into a fixed contact. [Prior Technical Literature] [Patent Literature]

專利文獻1：日本專利公開公報特開2010-44927號Patent Literature 1: Japanese Patent Publication No. 2010-44927

[發明所欲解決之課題][Problems to be solved by the invention]

對於斷路器有在投入動作剛開始之後能夠立即斷開之機能的需求。因此，以往利用電磁鐵來進行投入之斷路器中，為了防止因電磁鐵的心棒的慣性及殘留磁性使得投入動作剛開始之後的心棒的復歸動作遲緩，傳動機構係具有複雜的機構，構成傳動機構的構件多。由於多數的構件相關聯地動作而成為複雜的動作，持續長期間使用下會發生構件破損，機構特性隨著時間經過而發生變化之情況，而有斷路器的可靠性降低之可能性。There is a demand for a circuit breaker that can be opened immediately after the start of the operation. Therefore, in the conventional circuit breaker using the electromagnet to input, in order to prevent the return action of the heart rod just after the start of the input operation from being delayed due to the inertia and residual magnetism of the core rod of the electromagnet, the transmission mechanism has a complicated mechanism that constitutes the transmission mechanism Have many components. Since many components operate in association with each other and become complicated operations, the components may be damaged when used for a long period of time, and the mechanism characteristics may change with time, and the reliability of the circuit breaker may be reduced.

本發明係有鑑於上述課題而完成者，目的在提供可謀求傳動機構的簡單化之斷路器。 [解決課題之手段]The present invention has been completed in view of the above-mentioned problems, and an object thereof is to provide a circuit breaker that can simplify the transmission mechanism. [Means to solve the problem]

為了解決上述的課題，達成本發明的目的，本發明之斷路器係具備殼體、固定端子、可動子、電磁螺線管、傳動機構、以及驅動電路。固定端子係安裝有固定接點且固定於殼體。可動子係安裝有與固定接點相向之可動接點。電磁螺線管係具有直線狀地移動之心棒。傳動機構係使可動子隨著心棒的移動而移動，從可動接點與固定接點分開之斷開狀態變化為可動接點與固定接點接觸而通電之投入狀態。驅動電路係對電磁螺線管的線圈通電而驅動電磁螺線管。驅動電路係具備二極體與減低流到二極體的電流之電流減低部兩者的串聯體，串聯體係與電磁螺線管的線圈並聯連接。 [發明之效果]In order to solve the above-mentioned problems and achieve the object of the invention, the circuit breaker of the present invention includes a case, a fixed terminal, a mover, an electromagnetic solenoid, a transmission mechanism, and a drive circuit. The fixed terminal is installed with fixed contacts and fixed to the housing. The movable element is installed with a movable contact facing the fixed contact. The electromagnetic solenoid has a heart rod that moves linearly. The transmission mechanism makes the mover move with the movement of the mandrel, and changes from the disconnected state where the movable contact is separated from the fixed contact to the input state where the movable contact is in contact with the fixed contact and is energized. The drive circuit energizes the coil of the electromagnetic solenoid to drive the electromagnetic solenoid. The drive circuit is provided with a series body of a diode and a current reducing part that reduces the current flowing to the diode, and the series system is connected in parallel with the coil of the electromagnetic solenoid. [Effect of invention]

根據本發明，能夠達成可謀求傳動機構簡單化之效果。According to the present invention, the effect that the transmission mechanism can be simplified can be achieved.

以下，根據圖式來詳細說明本發明的實施形態之斷路器。惟，本發明不受此實施形態所限定。Hereinafter, a circuit breaker according to an embodiment of the present invention will be described in detail based on the drawings. However, the present invention is not limited by this embodiment.

實施形態1. 實施形態1之斷路器係使低電壓配電線等電路開關之空氣斷路器，在檢測出過電流及漏電的至少一者時使電路斷開。以下，為了方便說明，將Z軸正方向稱為上方，將Z軸負方向稱為下方，將X軸正方向稱為右方，將X軸負方向稱為左方，將Y軸正方向稱為前方，將Y軸負方向稱為後方。另外，以下的說明中，所謂的順時針及逆時針方向，係指後述圖中之順時針及逆時針方向。Embodiment 1. The circuit breaker according to the first embodiment is an air circuit breaker that switches a circuit such as a low-voltage distribution line and opens the circuit when at least one of overcurrent and leakage is detected. Hereinafter, for convenience of explanation, the positive direction of the Z axis is referred to as upward, the negative direction of the Z axis is referred to as downward, the positive direction of the X axis is referred to as right, the negative direction of the X axis is referred to as left, and the positive direction of the Y axis is referred to as For the front, the negative direction of the Y axis is called the rear. In the following description, the so-called clockwise and counterclockwise directions refer to clockwise and counterclockwise directions in the drawings described later.

第1圖係顯示本發明的實施形態1之斷路器的構成例之圖。如第1圖所示，實施形態1之斷路器1係具備：由絕緣材料形成之殼體2、分別貫穿殼體2的壁部2a而安裝於殼體2之電源側端子3及負載側端子4、以及在殼體2的內部其一端部5a連接至負載側端子4之可撓性導體5。斷路器1還具備：一端部6a連接至可撓性導體5的另一端部5b之可動子6、在殼體2的內部其一端部7a以可轉動的方式安裝於殼體2之可動子支架7、以及一端部及另一端部分別安裝於可動子支架7的另一端部7b及可動子6的另一端部6b之接觸壓力彈簧8。FIG. 1 is a diagram showing a configuration example of a circuit breaker according to Embodiment 1 of the present invention. As shown in FIG. 1, the circuit breaker 1 of the first embodiment includes a case 2 formed of an insulating material, and a power-side terminal 3 and a load-side terminal that are respectively installed in the case 2 through the wall 2 a of the case 2. 4. And the flexible conductor 5 whose one end 5a is connected to the load-side terminal 4 inside the housing 2. The circuit breaker 1 further includes a movable member 6 having one end 6a connected to the other end 5b of the flexible conductor 5, and one end 7a of the inside of the housing 2 is rotatably attached to the movable holder of the housing 2 7. A contact pressure spring 8 with one end and the other end respectively mounted on the other end 7b of the movable bracket 7 and the other end 6b of the movable 6.

電源側端子3係在殼體2的外部與未圖示的電源側導體連接，負載側端子4係在殼體2的外部與未圖示的負載側導體連接。電源側端子3在殼體2的內部電性連接有固定接點10，可動子6的另一端部6b電性連接有可動接點11。電源側端子3與負載側端子4係相分開而固定。第1圖所示的例子中，電源側端子3係配置於負載側端子4的上方，但亦可將負載側端子4配置於電源側端子3的上方。The power-side terminal 3 is connected to a power-side conductor (not shown) outside the housing 2, and the load-side terminal 4 is connected to a load-side conductor (not shown) outside the housing 2. The power supply terminal 3 is electrically connected to the fixed contact 10 inside the housing 2, and the movable end 11 is electrically connected to the other end 6 b of the movable element 6. The power terminal 3 and the load terminal 4 are separated and fixed. In the example shown in FIG. 1, the power-side terminal 3 is arranged above the load-side terminal 4, but the load-side terminal 4 may be arranged above the power-side terminal 3.

可撓性導體5係具有可撓性之導體，其一端部5a與負載側端子4連接，另一端部5b與可動子6連接。藉由此可撓性導體5電性連接負載側端子4與可動子6。如上所述，可動接點11係電性連接有可動子6，藉由可動接點11接觸固定接點10，斷路器1成為電源側端子3與負載側端子4電性連接而通電之投入狀態。藉由可動接點11離開固定接點10，斷路器1成為電源側端子3與負載側端子4電性分離之斷開狀態。The flexible conductor 5 is a flexible conductor, one end 5 a of which is connected to the load-side terminal 4, and the other end 5 b of which is connected to the mover 6. By this, the flexible conductor 5 electrically connects the load-side terminal 4 and the mover 6. As described above, the movable contact 11 is electrically connected to the movable element 6, and when the movable contact 11 contacts the fixed contact 10, the circuit breaker 1 becomes the power-on state in which the power-side terminal 3 and the load-side terminal 4 are electrically connected and energized . By moving the movable contact 11 away from the fixed contact 10, the circuit breaker 1 becomes a disconnected state in which the power-side terminal 3 and the load-side terminal 4 are electrically separated.

可動子支架7的一端部7a係藉由支架軸12而能夠以支架軸心12a為中心而轉動地安裝在殼體2。另外，可動子支架7的中間部7c係藉由連結銷13而可轉動地安裝於可動子6的一端部6a。可動子支架7設有可動子阻擋部9。One end portion 7a of the movable bracket 7 is rotatably attached to the housing 2 around the bracket axis 12a via the bracket shaft 12. In addition, the intermediate portion 7c of the movable member holder 7 is rotatably attached to the one end portion 6a of the movable member 6 by the connecting pin 13. The movable bracket 7 is provided with a movable block 9.

可動子阻擋部9係對於可動子6之以連結銷13為中心相對於可動子支架7的轉動角度進行限制。第1圖所示的狀態下，可動子6的一端部6a係抵接於可動子阻擋部9。因此，可動子6的另一端部6b之往離開可動子支架7的另一端部7b的方向的轉動受到可動子阻擋部9的限制，但可動子6的另一端部6b可往靠近可動子支架7的另一端部7b的方向的轉動。The movable blocker 9 restricts the rotation angle of the movable element 6 with respect to the movable element holder 7 with the connection pin 13 as the center. In the state shown in FIG. 1, the one end 6 a of the movable element 6 is in contact with the movable element blocking portion 9. Therefore, the rotation of the other end portion 6b of the movable member 6 in the direction away from the other end portion 7b of the movable member holder 7 is restricted by the movable member blocking portion 9, but the other end portion 6b of the movable member 6 can be moved closer to the movable member holder The direction of the other end 7b of 7 is rotated.

接觸壓力彈簧8係用來將可動接點11壓接於固定接點10之彈簧。第1圖所示的狀態下，接觸壓力彈簧8係比自然長度短之壓縮的狀態，成為預先具有一定的初始接觸壓力之狀態。因此，可動子6的另一端部6b往接近可動子支架7的另一端部7b之方向轉動時，可動子6的另一端部6b與可動子支架7的另一端部7b之距離變小而更壓縮接觸壓力彈簧8。The contact pressure spring 8 is a spring for pressing the movable contact 11 to the fixed contact 10. In the state shown in FIG. 1, the contact pressure spring 8 is in a compressed state shorter than the natural length, and has a predetermined initial contact pressure. Therefore, when the other end portion 6b of the movable member 6 rotates toward the other end portion 7b of the movable member holder 7, the distance between the other end portion 6b of the movable member 6 and the other end portion 7b of the movable member holder 7 becomes smaller and more Compression contact pressure spring 8.

斷路器1還具備：作為斷路器1的投入致動器而配設於殼體2的內部之電磁螺線管20、將電磁螺線管20的驅動力傳遞至可動子6而進行可動接點11與固定接點10的接觸及分開之傳動機構30、一端部及另一端部分別安裝於傳動機構30及殼體2之開極彈簧40、可維持投入狀態及解除投入狀態之跳脫機構50、以及驅動電磁螺線管20之驅動電路70。驅動電路70的配置不限於第1圖所示的配置。The circuit breaker 1 further includes an electromagnetic solenoid 20 disposed inside the case 2 as an input actuator of the circuit breaker 1, and transmits a driving force of the electromagnetic solenoid 20 to the movable element 6 to make a movable contact 11 The transmission mechanism 30 that contacts and separates from the fixed contact 10, one end and the other end are respectively installed in the transmission mechanism 30 and the open pole spring 40 of the housing 2, a trip mechanism 50 that can maintain the input state and release the input state And a driving circuit 70 for driving the electromagnetic solenoid 20. The configuration of the drive circuit 70 is not limited to the configuration shown in FIG. 1.

電磁螺線管20係具備：由磁性體形成之磁軛21、捲繞於未圖示的線圈架且固定於磁軛21的內側之投入用線圈22、可上下方向線性往復移動之鐵心棒23、以及形成於鐵心棒23的上部之突出部24。電磁螺線管20及殼體2的至少其中之一設有用來導引鐵心棒23的移動方向於上下方向之未圖示的導件，藉由此導件，使鐵心棒23只能上下方向位移。另外，鐵心棒23與突出部24若有固定即可，鐵心棒23與突出部24的固定方法並無限制。The electromagnetic solenoid 20 includes a yoke 21 formed of a magnetic body, an input coil 22 wound around a bobbin (not shown) and fixed inside the yoke 21, and a core rod 23 capable of linearly reciprocating up and down And the protrusion 24 formed on the upper part of the core rod 23. At least one of the electromagnetic solenoid 20 and the housing 2 is provided with a guide member (not shown) for guiding the moving direction of the core rod 23 in the up and down direction, by which the core rod 23 can only be moved up and down Displacement. In addition, the core rod 23 and the protrusion 24 may be fixed, and the method of fixing the core rod 23 and the protrusion 24 is not limited.

藉由驅動電路70通電到投入用線圈22，使電磁螺線管20產生電磁吸力。由於此電磁吸力的產生，使得鐵心棒23往上方移動，鐵心棒23的移動係在鐵心棒23與投入用線圈22內部之間的空隙25消失時，因受到物理的限制而停止。如此，鐵心棒23停止的位置係鐵心棒23成為最上方的位置，以下稱為最大投入位置或最大移動位置。另外，鐵心棒23停止移動之構造不限於上述的例子。例如，亦可為在鐵心棒23的下部設置突出部，以該突出部卡於投入用線圈22的線圈架或磁軛21來物理地停止鐵心棒23之構成。When the drive circuit 70 is energized to the input coil 22, the electromagnetic solenoid 20 generates electromagnetic attraction. Due to the generation of this electromagnetic attraction force, the core rod 23 moves upward, and the movement of the core rod 23 stops when the gap 25 between the core rod 23 and the inside of the putting coil 22 disappears due to physical restrictions. In this way, the position where the iron core bar 23 stops is the position where the iron core bar 23 becomes the uppermost position, and is hereinafter referred to as the maximum input position or the maximum movement position. In addition, the structure in which the core rod 23 stops moving is not limited to the above example. For example, a configuration may be provided in which the protruding portion is provided at the lower portion of the core rod 23, and the protruding portion is caught in the bobbin or yoke 21 of the input coil 22 to physically stop the core rod 23.

鐵心棒23的位置到達最大投入位置起經過一定時間之後，電磁螺線管20係由於對投入用線圈22之通電停止而不再產生電磁吸力。由於電磁螺線管20的電磁吸力消失，鐵心棒23係因例如鐵心棒23本身的重量及開極彈簧40的開極力而受到從最大投入位置往下移動之力的作用。After a certain time has elapsed since the position of the core rod 23 reached the maximum input position, the electromagnetic solenoid 20 is no longer generating electromagnetic suction force due to the energization of the input coil 22 being stopped. Since the electromagnetic attraction force of the electromagnetic solenoid 20 disappears, the iron core bar 23 is subjected to a force moving downward from the maximum input position due to, for example, the weight of the iron core bar 23 itself and the opening force of the opening spring 40.

傳動機構30係具備：一端部31a可轉動地連結於電磁螺線管20的突出部24之連結連桿31、可轉動地連結於連結連桿31的另一端部31b之槓桿32、以及可轉動地連結於槓桿32的一端部32a之絕緣桿33。The transmission mechanism 30 includes: a connecting link 31 that is rotatably connected to the protruding portion 24 of the electromagnetic solenoid 20 at one end 31 a, a lever 32 that is rotatably connected to the other end 31 b of the connecting link 31, and a turnable The insulating rod 33 is ground-connected to one end 32a of the lever 32.

連結連桿31的一端部31a係藉由連結銷34而可轉動地連結於電磁螺線管20的突出部24，連結連桿31的另一端部31b係利用連結銷35而可轉動地連結於槓桿32。One end 31 a of the connecting link 31 is rotatably connected to the protrusion 24 of the electromagnetic solenoid 20 by the connecting pin 34, and the other end 31 b of the connecting link 31 is rotatably connected to the connecting pin 35 Leverage 32.

槓桿32係安裝於能夠以相對於殼體2而言絕對位置固定之槓桿軸心36為中心而轉動之槓桿軸37。槓桿32係在比槓桿軸37更靠近跳脫機構50側之區域，藉由連結銷35而連結於連結連桿31的另一端部31b。另外，斷路器1的傳動機構30係具備卡合銷51，卡合銷51係固定於槓桿32的另一端部32b。The lever 32 is attached to a lever shaft 37 that can rotate around a lever axis 36 whose absolute position is fixed relative to the housing 2. The lever 32 is connected to the other end portion 31b of the connecting link 31 by a connecting pin 35 in a region closer to the trip mechanism 50 side than the lever shaft 37. In addition, the transmission mechanism 30 of the circuit breaker 1 includes an engagement pin 51 that is fixed to the other end 32 b of the lever 32.

絕緣桿33係一端部33a藉由連結銷38而可轉動地連結於槓桿32的一端部32a，另一端部33b藉由連結銷13而可轉動地安裝於可動子6的一端部6a。絕緣桿33係由樹脂等電氣絕緣性高的材料所構成。因此，斷路器1為通電狀態時，流通於電源側端子3與負載側端子4之間的電流不會通過槓桿32而漏電。絕緣桿33的全體不必整體皆為絕緣材料，若連結銷13與連結銷38之間為絕緣狀態，則一部分亦可由導體所構成。The insulating rod 33 has one end 33a rotatably connected to the one end 32a of the lever 32 by a connecting pin 38, and the other end 33b is rotatably attached to one end 6a of the mover 6 by a connecting pin 13. The insulating rod 33 is made of a material with high electrical insulation such as resin. Therefore, when the circuit breaker 1 is in the energized state, the current flowing between the power supply side terminal 3 and the load side terminal 4 does not leak through the lever 32. It is not necessary that the entire insulating rod 33 is made of an insulating material as a whole, and if the connecting pin 13 and the connecting pin 38 are in an insulated state, a part may be made of a conductor.

槓桿32及絕緣桿33係構成為以槓桿軸心36及支架軸心12a作為固定的轉動中心之四連桿的肘節機構。因此，若槓桿軸心36、連結銷38、連結銷13越接近直線狀地配置之死點，則用較小的力即可驅動傳動機構30。突出部24、連結連桿31、槓桿32、絕緣桿33、可動子6及可動子支架7係構成連桿構造。The lever 32 and the insulating rod 33 are configured as a four-bar toggle mechanism with the lever axis 36 and the bracket axis 12a as fixed rotation centers. Therefore, as the lever axis 36, the connecting pin 38, and the connecting pin 13 are closer to the dead point where they are linearly arranged, the transmission mechanism 30 can be driven with a smaller force. The protruding portion 24, the connecting link 31, the lever 32, the insulating rod 33, the movable element 6 and the movable element bracket 7 constitute a link structure.

開極彈簧40係如上所述，其一端部及另一端部分別安裝於槓桿32及殼體2，藉由開極彈簧40的彈性恢復力，將傳動機構30往後述的斷開狀態位置位移之方向彈壓（亦即，賦予勢能）。The open pole spring 40 is as described above, and one end portion and the other end portion thereof are respectively mounted on the lever 32 and the housing 2, and the elastic restoring force of the open pole spring 40 displaces the transmission mechanism 30 to the off-state position described later Directional bounce (that is, to impart potential energy).

跳脫機構50係如上所述，具有可維持投入狀態及可解除投入狀態之機能。第2圖係第1圖所示的跳脫機構的放大圖。第2圖中，以虛線顯示斷路器1的殼體2。The trip mechanism 50 is as described above, and has a function capable of maintaining the input state and releasing the input state. Figure 2 is an enlarged view of the trip mechanism shown in Figure 1. In the second figure, the case 2 of the circuit breaker 1 is shown in broken lines.

如第2圖所示，跳脫機構50係具備：與固定於槓桿32的另一端部32b之卡合銷51卡合之跳脫槓桿52、以及一端部及另一端部分別安裝於跳脫槓桿52及殼體2之第一復歸彈簧53。跳脫機構50還具備：利用未圖示的致動器的驅動力而轉動之跳脫棒 54、以及一端部及另一端部分別安裝於跳脫棒54及殼體2之第二復歸彈簧55。As shown in FIG. 2, the trip mechanism 50 includes a trip lever 52 that engages with an engagement pin 51 fixed to the other end 32 b of the lever 32, and one end and the other end are respectively mounted on the trip lever 52 and the first return spring 53 of the housing 2. The trip mechanism 50 further includes a trip bar 54 rotated by a driving force of an actuator (not shown), and a second return spring 55 to which the one end and the other end are respectively attached to the trip bar 54 and the housing 2 .

卡合銷51係從槓桿32往與槓桿32的延伸方向正交之右方突出。跳脫槓桿52係在一端部52a形成有具有圓弧面之圓弧部56，該圓弧面係在投入過程會與卡合銷51接觸，另一端部52b係能夠以固定的跳脫槓桿軸心60為中心而轉動地安裝於殼體2。另外，跳脫槓桿52的中間部係在後方側形成有凹入的凹部52c。此凹部52c中形成有投入狀態下與卡合銷51卡合之卡合面57。另外，在跳脫槓桿52的另一端部52b之中，前方側的區域設有與跳脫棒54卡合之卡合部59。The engagement pin 51 protrudes from the lever 32 to the right orthogonal to the extending direction of the lever 32. The trip lever 52 is formed at one end 52a with a circular arc portion 56 having a circular arc surface, which is in contact with the engaging pin 51 during the loading process, and the other end 52b is capable of a fixed trip lever shaft The core 60 is rotatably attached to the housing 2 as a center. In addition, the intermediate portion of the trip lever 52 is formed with a recessed recess 52c on the rear side. An engagement surface 57 that engages with the engagement pin 51 in the throw-in state is formed in this recess 52c. In addition, in the other end portion 52b of the trip lever 52, an engagement portion 59 that engages with the trip bar 54 is provided in a region on the front side.

跳脫棒54的一端部54a係能夠以跳脫棒軸心61為中心而轉動地安裝於殼體2，且具有以跳脫棒軸心61為中心之半圓形的半圓部58。半圓部58係由具有圓弧面之圓弧部分58a及具有平坦面之平坦部分58b所形成。One end portion 54a of the trip bar 54 is rotatably attached to the housing 2 about the trip bar axis 61, and has a semi-circular semi-circular portion 58 centered around the trip bar axis 61. The semicircular portion 58 is formed by an arc portion 58a having an arc surface and a flat portion 58b having a flat surface.

以未圖示的致動器的驅動力使半圓部58以跳脫棒軸心61為中心而轉動到半圓部58的圓弧部分58a與形成於跳脫槓桿52的另一端部52b之卡合部59卡合，而限制跳脫槓桿52的一端部52a向前方側的轉動。With the driving force of an actuator not shown, the semicircular portion 58 rotates around the tripping rod axis 61 as a center until the arc portion 58a of the semicircular portion 58 engages with the other end portion 52b formed on the tripping lever 52 The portion 59 is engaged to restrict the rotation of the one end 52a of the trip lever 52 to the front side.

第二復歸彈簧55係使朝向上方的跳脫棒54的另一端部54b以跳脫棒軸心61為中心往朝向前方的方向轉動之方向，彈壓跳脫棒54。亦即，第二復歸彈簧55係對跳脫棒54往順時針方向彈壓。The second return spring 55 causes the other end portion 54b of the trip bar 54 facing upward to rotate in the direction toward the front with the trip bar axis 61 as a center, and urges the trip bar 54. That is, the second return spring 55 urges the trip bar 54 clockwise.

第3圖係顯示實施形態1之包含驅動電路之斷路器的電路的構成例之圖。如第3圖所示，實施形態1之斷路器1係具備：進行對於投入用線圈22的通電之驅動電路70、設於斷路器1的正面之內部ON開關71、以及可從離開斷路器1的位置進行斷路器1的ON操作之外部ON開關72。藉由將控制電源73連接至設在斷路器1的上部的端子台，將電力供給到驅動電路70。Fig. 3 is a diagram showing a configuration example of a circuit including a circuit breaker of a driving circuit according to the first embodiment. As shown in FIG. 3, the circuit breaker 1 of the first embodiment includes: a drive circuit 70 for energizing the input coil 22; an internal ON switch 71 provided on the front of the circuit breaker 1; The external ON switch 72 for the ON operation of the circuit breaker 1. By connecting the control power supply 73 to the terminal block provided on the upper part of the circuit breaker 1, electric power is supplied to the drive circuit 70.

斷路器1還具備：與設於斷路器1的正面之未圖示的OFF操作按鈕連動之內部OFF開關74、以及可從離開斷路器1的位置進行斷路器1的OFF操作之跳脫附屬裝置75。跳脫附屬裝置75可在驅動電路70的電壓降到低於基準値時，進行使斷路器1自動跳脫之控制。The circuit breaker 1 further includes: an internal OFF switch 74 linked to an OFF operation button (not shown) provided on the front of the circuit breaker 1 and a trip attachment device that can perform the OFF operation of the circuit breaker 1 from a position away from the circuit breaker 1 75. The trip attachment device 75 can perform control to automatically trip the circuit breaker 1 when the voltage of the drive circuit 70 drops below the reference value.

另外，斷路器1還具備：檢測出電路的過電流或漏電之檢測部76、驅動未圖示的致動器之跳脫用線圈77、以及進行對於跳脫用線圈77的通電之驅動電路78。檢測部76係具備：將一次側設於電路之變流器97、以及連接至變流器97的二次側之跳脫繼電器98。跳脫繼電器98係根據變流器97的二次側電流而檢測出過電流或漏電，並輸出高準位的電壓作為跳脫指令。檢測部76若能夠檢測出過電流或漏電並輸出跳脫指令之構成即可，不限於第3圖所示的例子。In addition, the circuit breaker 1 further includes a detection unit 76 that detects overcurrent or leakage of the circuit, a trip coil 77 that drives an actuator (not shown), and a drive circuit 78 that energizes the trip coil 77 . The detection unit 76 includes a converter 97 having a primary side provided in the circuit, and a trip relay 98 connected to the secondary side of the converter 97. The trip relay 98 detects an overcurrent or leakage based on the secondary side current of the converter 97, and outputs a high-level voltage as a trip command. The detection unit 76 may be configured as long as it can detect overcurrent or leakage and output a trip command, and is not limited to the example shown in FIG. 3.

驅動電路78係在從檢測部76輸出跳脫指令時，進行對於跳脫用線圈77之通電。對於跳脫用線圈77進行通電時，就驅動未圖示的致動器，並利用該致動器來驅動第2圖所示的跳脫棒54逆時針轉動。藉此，解除跳脫機構50之與傳動機構30的卡合。因此，可動接點11從固定接點10離開，使得斷路器1成為斷開狀態。The drive circuit 78 performs energization to the trip coil 77 when a trip command is output from the detection unit 76. When the trip coil 77 is energized, an actuator (not shown) is driven, and the trip bar 54 shown in FIG. 2 is driven to rotate counterclockwise by the actuator. Thereby, the engagement between the trip mechanism 50 and the transmission mechanism 30 is released. Therefore, the movable contact 11 is separated from the fixed contact 10, so that the circuit breaker 1 is turned off.

驅動電路70係在利用內部ON開關71進行了ON操作時或有利用外部ON開關72進行了ON操作時，使電流流至投入用線圈22而進行投入用線圈22之通電。藉此，鐵心棒23移動而使固定接點10與可動接點11接觸，使得斷路器1成為通電狀態。The drive circuit 70 flows current to the input coil 22 to energize the input coil 22 when the internal ON switch 71 performs the ON operation or when the external ON switch 72 performs the ON operation. Thereby, the iron core bar 23 moves, the fixed contact 10 and the movable contact 11 are brought into contact, and the circuit breaker 1 is brought into an energized state.

驅動電路70係在利用內部OFF開關74進行了OFF操作時、利用跳脫附屬裝置75進行了OFF操作時、或驅動電路70的電壓降到低於基準値時，停止對於投入用線圈22之通電。另外，驅動電路78係在利用內部OFF開關74進行了OFF操作時、利用跳脫附屬裝置75進行了OFF操作時、或驅動電路70的電壓降到低於基準値時，進行對於跳脫用線圈77之通電。The drive circuit 70 stops the energization of the input coil 22 when the internal OFF switch 74 is used for the OFF operation, when the trip attachment device 75 is used for the OFF operation, or when the voltage of the drive circuit 70 drops below the reference value . In addition, the drive circuit 78 performs the trip coil when the OFF operation is performed by the internal OFF switch 74, the OFF operation is performed by the trip attachment device 75, or the voltage of the drive circuit 70 falls below the reference value. Power on 77.

第4圖係顯示實施形態1中的驅動電路的具體構成的一例之圖。如第4圖所示，實施形態1中的驅動電路70係具備整流電路80、定電壓電路81、控制電路83、控制開關84、串聯體85、以及電阻R1、 R2、 R3。驅動電路70亦可為包含電阻R4之構成。FIG. 4 is a diagram showing an example of a specific configuration of the drive circuit in the first embodiment. As shown in FIG. 4, the drive circuit 70 in the first embodiment includes a rectifier circuit 80, a constant voltage circuit 81, a control circuit 83, a control switch 84, a series body 85, and resistors R1, R2, and R3. The driving circuit 70 may be configured to include the resistor R4.

整流電路80係將從控制電源73輸出的交流電壓整流變換為直流電壓Va。定電壓電路81係將從整流電路80輸出的直流電壓Va降壓而輸出定電壓Vb。定電壓Vb例如為24 V。控制電路83係根據內部ON開關71、外部ON開關72、內部OFF開關74、及跳脫附屬裝置75各者的狀態、以及檢測部76進行之過電流或漏電的檢測結果等，使控制開關84成為ON狀態或OFF狀態。The rectifier circuit 80 rectifies and converts the AC voltage output from the control power supply 73 into a DC voltage Va. The constant voltage circuit 81 reduces the DC voltage Va output from the rectifier circuit 80 to output a constant voltage Vb. The constant voltage Vb is 24 V, for example. The control circuit 83 controls the switch 84 based on the state of each of the internal ON switch 71, the external ON switch 72, the internal OFF switch 74, and the trip attachment device 75, and the detection result of the overcurrent or leakage by the detection unit 76. It becomes ON state or OFF state.

控制開關84係連接於一端接受直流電壓Va的供給之投入用線圈22的另一端與接地之間，進行投入用線圈22的另一端與接地之間之連接及斷開。控制開關84為ON狀態時，投入用線圈22的另一端與接地之間為短路狀態，進行對於投入用線圈22之激磁電流的供給。控制開關84為OFF狀態時，投入用線圈22的另一端與接地之間為斷開狀態，停止對於投入用線圈22之激磁電流的供給。The control switch 84 is connected between the other end of the input coil 22 that receives the supply of the DC voltage Va at one end and the ground, and connects and disconnects the other end of the input coil 22 and the ground. When the control switch 84 is in the ON state, the other end of the input coil 22 is short-circuited to the ground, and the exciting current to the input coil 22 is supplied. When the control switch 84 is in the OFF state, the other end of the input coil 22 is disconnected from the ground, and the supply of the exciting current to the input coil 22 is stopped.

串聯體85係與電磁螺線管20的投入用線圈22並聯連接。串聯體85係由二極體86與電流減低部87串聯連接而構成。二極體86係陽極連接於控制開關84，陰極連接於電流減低部87的一端。電流減低部87的另一端係接受直流電壓Va之施加。The series body 85 is connected in parallel with the input coil 22 of the electromagnetic solenoid 20. The series body 85 is composed of a diode 86 and a current reduction unit 87 connected in series. The anode of the diode 86 is connected to the control switch 84, and the cathode is connected to one end of the current reduction section 87. The other end of the current reduction unit 87 receives the application of the DC voltage Va.

該電流減低部87係在控制開關84從ON狀態變為OFF狀態而使投入用線圈22之通電停止時，減低經由二極體86流到投入用線圈22之回流電流。藉由該電流減低部87，傳動機構30不採用複雜的構成，如後所述，可在斷路器1的投入動作才剛開始之後立即進行斷開。The current reduction unit 87 reduces the return current flowing to the input coil 22 via the diode 86 when the control switch 84 is changed from the ON state to the OFF state to stop the energization of the input coil 22. With this current reduction section 87, the transmission mechanism 30 does not adopt a complicated structure, and as will be described later, it can be opened immediately after the switching operation of the circuit breaker 1 starts.

控制電路83係具備：邏輯或電路91、 95、閂鎖電路92、邏輯與電路93、邏輯非電路94、以及端子T1、T2、T3、T4、T5、T6。端子T1係與內部ON開關71連接。端子T2係與外部ON開關72連接。端子T3係與包含內部OFF開關74及跳脫附屬裝置75之開關箱連接。端子T4係與檢測部76的輸出端子連接。端子T5係與微動開關88連接，該微動開關88係與鐵心棒23成為投入狀態之動作連動。The control circuit 83 includes logical OR circuits 91 and 95, a latch circuit 92, a logical AND circuit 93, a logical NOT circuit 94, and terminals T1, T2, T3, T4, T5 and T6. The terminal T1 is connected to the internal ON switch 71. The terminal T2 is connected to the external ON switch 72. The terminal T3 is connected to a switch box including an internal OFF switch 74 and a trip attachment 75. The terminal T4 is connected to the output terminal of the detection unit 76. The terminal T5 is connected to the micro switch 88, and the micro switch 88 is interlocked with the operation in which the core rod 23 is put in the put state.

邏輯或電路91係一輸入端子與端子T1連接，另一輸入端子與端子T2連接。邏輯或電路91係在從內部ON開關71或外部ON開關72輸出投入訊號時，將投入訊號輸出至閂鎖電路92。第4圖所示的例子中，內部ON開關71或外部ON開關72短路而輸出的作為投入訊號之高準位的電壓係輸入至邏輯或電路91，並且，作為投入訊號之高準位的電壓係從邏輯或電路91輸出至閂鎖電路92。The logical OR circuit 91 has one input terminal connected to the terminal T1 and the other input terminal connected to the terminal T2. The logical OR circuit 91 outputs the input signal to the latch circuit 92 when the input signal is output from the internal ON switch 71 or the external ON switch 72. In the example shown in FIG. 4, the internal ON switch 71 or the external ON switch 72 is short-circuited and the voltage output as the high level of the input signal is input to the logical OR circuit 91, and the voltage as the high level of the input signal The output is from the logical OR circuit 91 to the latch circuit 92.

閂鎖電路92係例如在控制開關84並非為ON狀態之狀態下從邏輯或電路91輸出投入訊號時，輸出作為ON訊號之高準位的電壓至邏輯與電路93達一定時間。另外，閂鎖電路92係內建有計時電路，在輸出ON訊號的時間起經過一定時間時，輸出作為OFF訊號之低準位的電壓至邏輯與電路93。The latch circuit 92 outputs a high-level voltage as the ON signal to the logic AND circuit 93 for a certain period of time, for example, when the control switch 84 is not in the ON state and outputs the input signal from the logic OR circuit 91. In addition, the latch circuit 92 has a built-in timer circuit, and when a certain time elapses from the time when the ON signal is output, it outputs a low-level voltage as the OFF signal to the logic AND circuit 93.

邏輯與電路93係一輸入端子與自內部OFF開關74或跳脫附屬裝置75輸入斷開訊號之端子T3連接，另一輸入端子係與閂鎖電路92的輸出端子連接。邏輯與電路93係在未有從內部OFF開關74或跳脫附屬裝置75輸出斷開訊號之狀態下，從閂鎖電路92輸出ON訊號時，將作為ON訊號之高準位的電壓輸出至控制開關84。第4圖所示的例子中，斷開訊號係低準位的電壓。The logic AND circuit 93 has one input terminal connected to the terminal T3 inputting a disconnect signal from the internal OFF switch 74 or the trip accessory device 75, and the other input terminal connected to the output terminal of the latch circuit 92. The logic AND circuit 93 outputs the high level voltage of the ON signal to the control when the ON signal is output from the latch circuit 92 when the OFF signal is not output from the internal OFF switch 74 or the trip accessory device 75 Switch 84. In the example shown in Figure 4, the disconnect signal is a low-level voltage.

控制開關84係輸入端子與端子T6連接，在從邏輯與電路93經由端子T6輸出ON訊號時成為ON狀態。控制開關84成為ON狀態，就進行對於投入用線圈22之激磁電流的供給。藉此，開始以鐵心棒23進行之投入動作。The control switch 84 is an input terminal connected to the terminal T6, and becomes an ON state when an ON signal is output from the logical AND circuit 93 via the terminal T6. When the control switch 84 is turned ON, the excitation current to the input coil 22 is supplied. With this, the throwing operation by the iron core bar 23 is started.

另外，邏輯與電路93係在從閂鎖電路92輸出OFF訊號時、或從內部OFF開關74或跳脫附屬裝置75輸出斷開訊號時，將作為OFF訊號之低準位的電壓輸出至控制開關84。控制開關84係在從邏輯與電路93輸出的訊號從ON訊號變為OFF訊號時，從ON狀態切換為OFF狀態。控制開關84成為OFF狀態，就停止對於投入用線圈22之激磁電流的供給。In addition, the logic AND circuit 93 outputs a low-level voltage as the OFF signal to the control switch when the OFF signal is output from the latch circuit 92, or when the OFF signal is output from the internal OFF switch 74 or the trip accessory device 75. 84. The control switch 84 is switched from the ON state to the OFF state when the signal output from the logical AND circuit 93 changes from the ON signal to the OFF signal. When the control switch 84 is turned off, the supply of the exciting current to the input coil 22 is stopped.

邏輯或電路95係三輸入一輸出之邏輯或電路。邏輯或電路95係第一輸入端子與端子T4連接，第二輸入端子與邏輯非電路94的輸出端子連接，第三輸入端子與端子T5連接。另外，邏輯非電路94的輸入端子係與端子T3連接。The logical OR circuit 95 is a three-input one-output logical OR circuit. The logical OR circuit 95 is a first input terminal connected to the terminal T4, a second input terminal connected to the output terminal of the logical NOT circuit 94, and a third input terminal connected to the terminal T5. In addition, the input terminal of the logical negation circuit 94 is connected to the terminal T3.

邏輯或電路95係在從檢測部76輸出跳脫指令輸時、從內部OFF開關74或跳脫附屬裝置75輸出斷開訊號時、或從微動開關88輸出高準位的電壓時，將作為重設訊號之高準位的電壓輸出至閂鎖電路92。閂鎖電路92係在持續輸出ON訊號之狀態下，若從邏輯或電路95輸出重設訊號，就將輸出訊號從ON訊號切換為OFF訊號。另外，控制電路83的構成不限於第4圖所示的構成，控制電路83若為能夠實現上述的機能之電路即可。The logical OR circuit 95 is used as a reset when the trip command output is output from the detection unit 76, when the internal OFF switch 74 or the trip accessory device 75 outputs a disconnection signal, or when the micro switch 88 outputs a high-level voltage. The high level voltage of the signal is output to the latch circuit 92. The latch circuit 92 continuously outputs the ON signal, and if the reset signal is output from the logical OR circuit 95, the output signal is switched from the ON signal to the OFF signal. In addition, the configuration of the control circuit 83 is not limited to the configuration shown in FIG. 4, and the control circuit 83 may be a circuit that can realize the above-mentioned functions.

以下，針對如上述構成的斷路器1的動作進行具體地說明。第5圖係顯示實施形態1之斷路器的斷開狀態之構成圖，第6圖係第5圖所示的跳脫機構的放大圖。第7圖係顯示實施形態1之斷路器的接點開始抵接的瞬間的狀態之構成圖，第8圖係第7圖所示的跳脫機構的放大圖。第9圖係顯示實施形態1之斷路器到達最大投入位置的狀態之構成圖，第10圖係第9圖所示的跳脫機構的放大圖，第11圖係跳脫槓桿從第9圖所示的狀態轉動之後的跳脫機構的放大圖。第12圖係顯示實施形態1之斷路器到達投入完成位置的狀態之構成圖，第13圖係第12圖所示的跳脫機構的放大圖。第5圖至第13圖中，以虛線表示殼體2。Hereinafter, the operation of the circuit breaker 1 configured as described above will be specifically described. Fig. 5 is a configuration diagram showing the opened state of the circuit breaker of the first embodiment, and Fig. 6 is an enlarged view of the trip mechanism shown in Fig. 5. FIG. 7 is a configuration diagram showing the state at the moment when the contacts of the circuit breaker of the first embodiment start to contact, and FIG. 8 is an enlarged view of the trip mechanism shown in FIG. 7. Fig. 9 is a structural diagram showing a state where the circuit breaker of Embodiment 1 reaches the maximum input position, Fig. 10 is an enlarged view of the trip mechanism shown in Fig. 9, and Fig. 11 is the trip lever from Fig. 9 An enlarged view of the trip mechanism after turning in the state shown. Fig. 12 is a configuration diagram showing a state where the circuit breaker of the first embodiment reaches the input completion position, and Fig. 13 is an enlarged view of the trip mechanism shown in Fig. 12. In FIGS. 5 to 13, the housing 2 is indicated by a broken line.

如第5圖所示，斷路器1處於斷開狀態時，構成電磁螺線管20之鐵心棒23係因開極彈簧40的作用而到達最下部與殼體2物理地接觸，無法進一步地下降。此時，空隙25的大小成為最大。As shown in FIG. 5, when the circuit breaker 1 is in the off state, the iron core rod 23 constituting the electromagnetic solenoid 20 reaches the lowermost part due to the action of the open pole spring 40 and physically contacts the case 2 and cannot be lowered further . At this time, the size of the gap 25 becomes the largest.

另外，鐵心棒23位於最下部時，槓桿32的另一端部32b係位於比一端部32a更下方之位置，且位於與跳脫槓桿52的一端部52a左右方向相向之位置。另外，跳脫槓桿52的一端部52a藉由第一復歸彈簧53的彈性恢復力往後方賦予張力。因此，成為安裝於槓桿32的另一端部32b之卡合銷51與形成於跳脫槓桿52的一端部52a之圓弧部56接觸之狀態。In addition, when the iron core bar 23 is located at the lowermost portion, the other end 32b of the lever 32 is located below the one end 32a, and is located at a position facing the left and right direction of the one end 52a of the trip lever 52. In addition, the one end portion 52a of the trip lever 52 imparts tension to the rear by the elastic restoring force of the first return spring 53. Therefore, the engagement pin 51 attached to the other end 32b of the lever 32 comes into contact with the arc portion 56 formed at the one end 52a of the trip lever 52.

斷路器1處於斷開狀態時，藉由可動子支架7的可動子阻擋部9限制了可動子6的另一端部6b往離開可動子支架7的另一端部7b的方向之可動子6的轉動，亦即限制了可動子6的順時針的轉動。另外，如上所述，接觸壓力彈簧8係預先具有一定的初始接觸壓力之狀態，因此只要相對於固定接點10之推壓可動接點11的反作用力未超過初始接觸壓力，可動子6的一端部6a就不會離開可動子阻擋部9。When the circuit breaker 1 is in an open state, the movable block 6 of the movable bracket 7 restricts the rotation of the movable end 6 of the movable end 6 toward the direction away from the other end 7b of the movable holder 7 , That is, the clockwise rotation of the movable element 6 is restricted. In addition, as described above, the contact pressure spring 8 has a certain initial contact pressure in advance, so as long as the reaction force against the movable contact 11 pushing against the fixed contact 10 does not exceed the initial contact pressure, one end of the mover 6 The portion 6a will not leave the movable blocker 9.

如第5圖所示，斷路器1處於斷開狀態時，可動子6的可動接點11與固定接點10的物理最短距離之分開距離成為最大。第5圖所示的狀態下，如第6圖所示，跳脫棒54的半圓部58的平坦部分58b係藉由使跳脫棒54順時針轉動之第二復歸彈簧55的彈性恢復力，而接觸形成於跳脫槓桿52的另一端部52b之卡合部59的角部分。因此，限制跳脫槓桿52的轉動而維持第6圖所示的狀態。As shown in FIG. 5, when the circuit breaker 1 is in the off state, the separation distance between the movable contact 11 of the mover 6 and the fixed contact 10 becomes the maximum. In the state shown in FIG. 5, as shown in FIG. 6, the flat portion 58b of the semi-circular portion 58 of the trip bar 54 is the elastic restoring force of the second return spring 55 that rotates the trip bar 54 clockwise, The corner portion of the engaging portion 59 formed at the other end 52b of the trip lever 52 contacts. Therefore, the rotation of the trip lever 52 is restricted and the state shown in FIG. 6 is maintained.

另外，跳脫槓桿52的一端部52a係藉由使跳脫槓桿52的一端部52a朝向後方而使跳脫槓桿52順時針轉動之第一復歸彈簧53的彈性恢復力，在圓弧部56與槓桿32的卡合銷51接觸，藉此，限制跳脫槓桿52的順時針的轉動而維持第6圖所示的狀態。In addition, the one end 52a of the trip lever 52 is an elastic restoring force of the first return spring 53 which rotates the trip lever 52 clockwise by turning the one end 52a of the trip lever 52 toward the rear. The engagement pin 51 of the lever 32 contacts, thereby restricting the clockwise rotation of the trip lever 52 to maintain the state shown in FIG. 6.

接著，參照第4圖來說明斷路器1處於斷開狀態之狀態下，進行對於電磁螺線管20的投入用線圈22的通電之驅動電路70的動作。以下的說明中，假設為控制電源73供給電力至驅動電路70，且整流電路80及定電壓電路81正常動作。Next, the operation of the drive circuit 70 that energizes the input coil 22 of the electromagnetic solenoid 20 when the circuit breaker 1 is in the open state will be described with reference to FIG. 4. In the following description, it is assumed that the control power supply 73 supplies power to the drive circuit 70, and the rectifier circuit 80 and the constant voltage circuit 81 operate normally.

斷路器1處於斷開狀態之狀態下，藉由內部ON開關71或外部ON開關72的ON操作而短路時，從內部ON開關71或外部ON開關72輸出投入訊號至控制電路83。控制電路83係在接收到來自內部ON開關71或外部ON開關72之投入訊號時，輸出ON訊號至控制開關84。藉此，進行對於投入用線圈22之通電。When the circuit breaker 1 is in the off state and short-circuited by the ON operation of the internal ON switch 71 or the external ON switch 72, the input signal is output to the control circuit 83 from the internal ON switch 71 or the external ON switch 72. The control circuit 83 outputs an ON signal to the control switch 84 when receiving the input signal from the internal ON switch 71 or the external ON switch 72. With this, the energization of the input coil 22 is performed.

藉由驅動電路70進行對於投入用線圈22之通電時，如第7圖所示，鐵心棒23向上方移動。由於鐵心棒23向上方移動，槓桿32係以槓桿軸心36為中心而轉動，使槓桿32與絕緣桿33的連結角度變小。連結角度係槓桿32的延伸方向與絕緣桿33的延伸方向所夾的角度，隨著斷路器1從第5圖所示的狀態變到第7圖所示的狀態，連結角度變小。When the drive circuit 70 energizes the input coil 22, as shown in FIG. 7, the core rod 23 moves upward. As the core rod 23 moves upward, the lever 32 rotates about the lever axis 36 as a center, and the connection angle of the lever 32 and the insulating rod 33 becomes smaller. The connection angle is the angle between the extending direction of the lever 32 and the extending direction of the insulating rod 33. As the circuit breaker 1 changes from the state shown in FIG. 5 to the state shown in FIG. 7, the connection angle becomes smaller.

隨著連結角度變小，可動子6係向前方移動，使得可動接點11與固定接點10相接觸。可動接點11與固定接點10開始抵接的瞬間的狀態係接點抵接開始狀態。此時，電源側端子3與負載側端子4之間會通過固定接點10、可動接點11、及可撓性導體5而成為通電狀態。As the connection angle becomes smaller, the movable element 6 moves forward, so that the movable contact 11 contacts the fixed contact 10. The state at the moment when the movable contact 11 and the fixed contact 10 start contacting is the contact contact starting state. At this time, between the power-side terminal 3 and the load-side terminal 4, the fixed contact 10, the movable contact 11, and the flexible conductor 5 are brought into an energized state.

又，如第6圖及第8圖所示，安裝於能夠以槓桿軸心36為中心而轉動之槓桿32的前端之卡合銷51，隨著連結角度變小，以維持與受到第一復歸彈簧53的彈性恢復力作用之跳脫槓桿52接觸的狀態，沿著形成於跳脫槓桿52的一端部52a之圓弧部56而滑動。Also, as shown in FIGS. 6 and 8, the engagement pin 51 mounted on the front end of the lever 32 that can rotate about the lever axis 36 as the center, as the connection angle becomes smaller, to maintain and receive the first return The state in which the trip lever 52 is in contact with the elastic restoring force of the spring 53 slides along the arc portion 56 formed at one end 52 a of the trip lever 52.

跳脫槓桿52的圓弧部56係形成為以槓桿32的槓桿軸心36為中心之圓弧形狀。因此，從第6圖所示的狀態到第8圖所示的狀態之間，即使卡合銷51移動跳脫槓桿52的位置亦無變化。The arc portion 56 of the trip lever 52 is formed in an arc shape centered on the lever axis 36 of the lever 32. Therefore, from the state shown in FIG. 6 to the state shown in FIG. 8, there is no change even if the position where the engagement pin 51 moves the trip lever 52.

斷路器1到達接點抵接開始狀態時，可動子6係由於設於可動子支架7之可動子阻擋部9而限制順時針的轉動，但可逆時針轉動。鐵心棒23從第7圖所示的接點抵接開始狀態再繼續前進時，來自固定接點10之對於安裝於可動子6的另一端部6b之可動接點11的接觸反作用力增大，所以可動子6的另一端部6b以連結銷13為中心逆時針轉動而靠近可動子支架7的另一端部7b。因此，接觸壓力彈簧8從第7圖所示的狀態更進一步受到壓縮。When the circuit breaker 1 reaches the contact abutment starting state, the movable element 6 restricts the clockwise rotation due to the movable element blocking portion 9 provided in the movable element holder 7, but it can rotate counterclockwise. When the core rod 23 continues to advance from the contact abutment state shown in FIG. 7, the contact reaction force from the fixed contact 10 to the movable contact 11 attached to the other end portion 6b of the mover 6 increases, Therefore, the other end portion 6b of the movable member 6 rotates counterclockwise about the connecting pin 13 and approaches the other end portion 7b of the movable member holder 7. Therefore, the contact pressure spring 8 is further compressed from the state shown in FIG. 7.

如第9圖所示，由於鐵心棒23向上方移動使得鐵心棒23的位置達最大投入位置時，可動接點11受到來自固定接點10的接觸反作用力而相對於可動子6的可動子支架7的轉動角度成為最大，接觸壓力彈簧8的壓縮量也成為最大。As shown in FIG. 9, when the core rod 23 moves upward so that the position of the core rod 23 reaches the maximum input position, the movable contact 11 receives the contact reaction force from the fixed contact 10 and moves relative to the movable holder 6 of the movable member 6 The rotation angle of 7 becomes the maximum, and the compression amount of the contact pressure spring 8 also becomes the maximum.

另外，鐵心棒23的位置到達最大投入位置時，如第10圖所示，在跳脫槓桿52的圓弧部56上滑動之卡合銷51係通過跳脫槓桿52的圓弧部56而到達跳脫槓桿52的卡合面57的上部。因此，卡合銷51係成為瞬間未接觸跳脫槓桿52的狀態。In addition, when the position of the core rod 23 reaches the maximum input position, as shown in FIG. 10, the engagement pin 51 sliding on the arc portion 56 of the trip lever 52 is reached through the arc portion 56 of the trip lever 52 The upper part of the engaging surface 57 of the trip lever 52 is tripped. Therefore, the engagement pin 51 is in a state where the trip lever 52 is not contacted for an instant.

原本受到卡合銷51的限制而不能順時針轉動之跳脫槓桿52，係在與卡合銷51的關係變為未接觸狀態時，順時針轉動的限制就會解除。因此，如第11圖所示，跳脫槓桿52的凹部52c係藉由第一復歸彈簧53的彈性恢復力順時針轉動而與卡合銷51接觸。由於卡合銷51與跳脫槓桿52的凹部52c接觸，而限制跳脫槓桿52的順時針的轉動。The trip lever 52, which was originally restricted by the engagement pin 51 and cannot rotate clockwise, is released when the relationship with the engagement pin 51 becomes non-contact. Therefore, as shown in FIG. 11, the concave portion 52 c of the trip lever 52 is rotated clockwise by the elastic restoring force of the first return spring 53 and comes into contact with the engagement pin 51. Since the engagement pin 51 comes into contact with the recess 52c of the trip lever 52, the clockwise rotation of the trip lever 52 is restricted.

另外，卡合銷51到達跳脫槓桿52的卡合面57的上部而跳脫槓桿52轉動時，原本受到跳脫槓桿52的限制而不能順時針轉動之跳脫棒54係藉由第二復歸彈簧55的彈性恢復力而順時針轉動，如第10圖及第11圖所示，半圓部58的圓弧部分58a係轉入到卡合部59的上方而停止。另外，斷路器1中設有限制跳脫棒54的轉動之未圖示的阻擋件，在第10圖及第11圖所示的狀態下限制跳脫棒54的轉動。In addition, when the engagement pin 51 reaches the upper part of the engagement surface 57 of the trip lever 52 and the trip lever 52 rotates, the trip bar 54 which was originally restricted by the trip lever 52 and cannot rotate clockwise is returned by the second The elastic restoring force of the spring 55 rotates clockwise, and as shown in FIGS. 10 and 11, the arc portion 58 a of the semi-circular portion 58 rotates above the engaging portion 59 and stops. In addition, the circuit breaker 1 is provided with a stopper (not shown) that restricts the rotation of the trip bar 54 and restricts the rotation of the trip bar 54 in the state shown in FIGS. 10 and 11.

第4圖所示的微動開關88係由於與鐵心棒23成為投入狀態之動作連動而成為短路狀態，所以從微動開關88輸出高準位的電壓至控制電路83。控制電路83係在接收到來自微動開關88之高準位的電壓時，輸出OFF訊號至控制開關84。藉此，鐵心棒23成為投入狀態時，對於投入用線圈22之通電停止。另外，鐵心棒23在投入狀態時，鐵心棒23的位置係在最大投入位置。The micro switch 88 shown in FIG. 4 is in a short-circuit state in conjunction with the operation in which the core rod 23 is put into the input state, so the high level voltage is output from the micro switch 88 to the control circuit 83. The control circuit 83 outputs an OFF signal to the control switch 84 when it receives the high-level voltage from the micro switch 88. As a result, when the iron core bar 23 is in the put state, the energization to the put coil 22 is stopped. In addition, when the core rod 23 is in the put-in state, the position of the core rod 23 is at the maximum put-in position.

藉此，鐵心棒23的位置成為最大投入位置之後，對於電磁螺線管20之通電結束。對於電磁螺線管20之通電結束時，就解除藉由電磁螺線管20進行之對於傳動機構30之驅動。With this, after the position of the core rod 23 becomes the maximum input position, the energization of the electromagnetic solenoid 20 is ended. When the energization of the electromagnetic solenoid 20 is completed, the driving of the transmission mechanism 30 by the electromagnetic solenoid 20 is released.

因此，經壓縮的接觸壓力彈簧8的彈性恢復力係作用於固定接點10與可動接點11之間，而產生經由傳動機構30使電磁螺線管20的鐵心棒23從最大投入位置向斷開狀態位置之移動方向推壓回復之力。另外，鐵心棒23本身的重量及開極彈簧40的開極力所致的使鐵心棒23從最大投入位置向斷開狀態位置之移動方向的力也同時作用。藉此，鐵心棒23開始從第9圖所示的最大投入位置向下方移動。Therefore, the elastic restoring force of the compressed contact pressure spring 8 acts between the fixed contact 10 and the movable contact 11, and the iron rod 23 of the electromagnetic solenoid 20 is cut off from the maximum input position via the transmission mechanism 30. The restoring force is pushed by the moving direction of the open position. In addition, the force of the core rod 23 itself and the opening force of the opening spring 40 that causes the core rod 23 to move from the maximum insertion position to the off-state position also act simultaneously. As a result, the core rod 23 starts to move downward from the maximum insertion position shown in FIG. 9.

鐵心棒23從最大投入位置向下移動時，槓桿32係以槓桿軸心36為中心而逆時針轉動。槓桿32逆時針轉動時，卡合銷51係以槓桿軸心36為中心而逆時針轉動，如第12圖及第13圖所示，與跳脫槓桿52的卡合面57接觸，成為鐵心棒23到達投入完成位置之狀態，完成斷路器1的投入動作。When the core rod 23 moves downward from the maximum input position, the lever 32 rotates counterclockwise with the lever axis 36 as the center. When the lever 32 rotates counterclockwise, the engagement pin 51 rotates counterclockwise with the lever axis 36 as the center. As shown in FIGS. 12 and 13, it contacts the engagement surface 57 of the trip lever 52 and becomes a core rod 23 When the input completion position is reached, the input operation of the circuit breaker 1 is completed.

跳脫槓桿52係在鐵心棒23到達投入完成位置時，半圓部58的圓弧部分58a與形成於跳脫槓桿52的另一端部52b之卡合部59的平坦部卡合，限制跳脫槓桿52的一端部52a向前方側的轉動。The trip lever 52 is such that when the core rod 23 reaches the throw-in completion position, the arc portion 58a of the semi-circular portion 58 engages with the flat portion of the engaging portion 59 formed at the other end 52b of the trip lever 52 to restrict the trip lever One end portion 52a of 52 rotates forward.

因此，即使有由接觸壓力彈簧8的彈性恢復力所致之力經由卡合銷51作用於跳脫槓桿52以相對於跳脫槓桿軸心60逆時針轉動，跳脫槓桿52係如第13圖所示，因受到半圓部58的圓弧部分58a的限制而不能轉動。Therefore, even if a force due to the elastic restoring force of the contact pressure spring 8 acts on the trip lever 52 via the engaging pin 51 to rotate counterclockwise relative to the trip lever axis 60, the trip lever 52 is as shown in FIG. 13 As shown, it cannot be rotated because it is restricted by the arc portion 58a of the semicircular portion 58.

如上所述，在斷路器1為斷開狀態時，接觸壓力彈簧8係預先施加有一定的初始接觸壓力，而設定為在可動接點11開始接觸固定接點10之瞬間起，相對於固定接點10之可動接點11的接觸壓力增強。因此，在斷路器1為通電狀態時，不僅可預防由於可動接點11與固定接點10之間發生的電磁反斥力使得接點間分離的發生，而且可加快在下達跳脫指令後之可動接點11與固定接點10的分離速度，亦即開極速度。As described above, when the circuit breaker 1 is in an open state, the contact pressure spring 8 is preliminarily applied with a certain initial contact pressure, and is set to be fixed with respect to the fixed contact from the moment when the movable contact 11 begins to contact the fixed contact 10 The contact pressure of the movable contact 11 at the point 10 increases. Therefore, when the circuit breaker 1 is in the energized state, not only can the occurrence of separation between the contacts due to the electromagnetic repulsion force between the movable contact 11 and the fixed contact 10 be prevented, but also the movement after the trip command is issued can be accelerated The separation speed of the contact 11 and the fixed contact 10, that is, the opening speed.

接著，針對斷路器1的跳脫動作進行說明。參照第4圖來說明斷路器1在第12圖所示的投入完成位置的狀態下，電路中發生了過電流或漏電時之驅動電路70的動作。Next, the tripping operation of the circuit breaker 1 will be described. The operation of the drive circuit 70 when an overcurrent or leakage occurs in the circuit in the state where the circuit breaker 1 is in the input completion position shown in FIG. 12 will be described with reference to FIG. 4.

檢測部76係在檢測到電路的過電流或漏電時輸出跳脫指令。驅動電路78係在接收到檢測部76所輸出的跳脫指令時，進行對於跳脫用線圈77之通電。對於跳脫用線圈77之通電開始進行時，驅動未圖示的致動器，利用該致動器進行使第12圖及第13圖所示的跳脫棒54逆時針轉動之驅動。The detection unit 76 outputs a trip command when it detects overcurrent or leakage in the circuit. The drive circuit 78 performs energization to the trip coil 77 when receiving the trip command output by the detection unit 76. When the energization of the trip coil 77 starts, an actuator (not shown) is driven, and the trip bar 54 shown in FIGS. 12 and 13 is driven to rotate counterclockwise by the actuator.

藉由跳脫棒54逆時針轉動，跳脫棒54的半圓部58的圓弧部分58a從跳脫槓桿52的卡合部59離開，解除圓弧部分58a與卡合部59之卡合。因此，跳脫槓桿52係藉由接觸壓力彈簧8的彈性恢復力所致之力以跳脫槓桿軸心60為中心逆時針轉動，鐵心棒23係經第7圖所示的狀態，回到第5圖的斷開狀態位置。藉此，完成斷路器1的跳脫。When the trip bar 54 rotates counterclockwise, the arc portion 58a of the semicircular portion 58 of the trip bar 54 separates from the engagement portion 59 of the trip lever 52, and the engagement of the arc portion 58a and the engagement portion 59 is released. Therefore, the trip lever 52 is rotated counterclockwise about the trip lever axis 60 by the force of the elastic restoring force of the contact pressure spring 8, and the iron core rod 23 passes through the state shown in FIG. 7 and returns to the 5 Figure off position. With this, the tripping of the circuit breaker 1 is completed.

另外，在斷路器1的投入動作剛開始之後，控制電路83係輸出ON訊號，控制開關84為ON狀態，所以投入用線圈22中流通有激磁電流。投入用線圈22中流通有激磁電流之狀態下，若從檢測部76輸出跳脫指令，則控制電路83輸出OFF訊號至控制開關84。藉此，停止對於投入用線圈22之激磁電流的供給。In addition, immediately after the start operation of the circuit breaker 1 is started, the control circuit 83 outputs an ON signal to control the switch 84 to be in an ON state, so that an excitation current flows through the input coil 22. When the excitation current flows in the input coil 22, if a trip command is output from the detection unit 76, the control circuit 83 outputs an OFF signal to the control switch 84. With this, the supply of the exciting current to the input coil 22 is stopped.

使控制開關84成為OFF狀態而停止對於投入用線圈22之激磁電流的供給時，投入用線圈22會發生反電動勢。該反電動勢也稱為突波電壓。驅動電路70中，為了防止突波電壓使得控制開關84受到過電壓破壞而設有二極體86。該二極體86也稱為保護二極體或回流二極體。When the control switch 84 is turned off and the supply of the exciting current to the input coil 22 is stopped, the input coil 22 generates a counter electromotive force. This back electromotive force is also called a surge voltage. In the drive circuit 70, a diode 86 is provided to prevent the surge voltage from damaging the control switch 84 from overvoltage. This diode 86 is also called a protective diode or a reflux diode.

因突波電壓而有回流電流經由二極體86而流到投入用線圈22。為了減低該回流電流，如上所述，斷路器1係設有與二極體86串聯連接之電流減低部87。在對於投入用線圈22之激磁電流的供給已停止時，利用電流減低部87減低經由二極體86而流到投入用線圈22之回流電流。因此，可防止由於回流電流而維持於投入狀態的情形，防止投入動作剛開始之後的心棒的復歸動作遲緩。因此，可使傳動機構30為簡單的構成。Due to the surge voltage, a return current flows through the diode 86 to the input coil 22. In order to reduce the return current, as described above, the circuit breaker 1 is provided with a current reduction section 87 connected in series with the diode 86. When the supply of the exciting current to the input coil 22 is stopped, the current reduction unit 87 reduces the return current flowing through the diode 86 to the input coil 22. Therefore, it is possible to prevent the state of being maintained in the thrown-in state due to the return current, and prevent the return operation of the mandrel immediately after the throwing-in operation from being delayed. Therefore, the transmission mechanism 30 can have a simple structure.

第14圖至第16圖係顯示實施形態1中之電流減低部及控制開關的構成例之圖。第14圖及第16圖所示的例子中，電流減低部87係由電阻R10所構成。第15圖所示的例子中，電流減低部87係電阻R10與電容器C10串聯連接而成之構成。14 to 16 are diagrams showing configuration examples of the current reduction unit and the control switch in the first embodiment. In the examples shown in FIGS. 14 and 16, the current reduction section 87 is composed of the resistor R10. In the example shown in FIG. 15, the current reduction unit 87 is formed by connecting the resistor R10 and the capacitor C10 in series.

第15圖所示的電流減低部87為電阻R10與電容器C10串聯連接而成之構成，但亦可為電阻R10與電容器C10並聯連接而成之構成。包含電阻R10及電容器C10之構成也稱為緩衝電路。The current reduction section 87 shown in FIG. 15 is configured by connecting the resistor R10 and the capacitor C10 in series, but it may also be configured by connecting the resistor R10 and the capacitor C10 in parallel. The configuration including the resistor R10 and the capacitor C10 is also called a snubber circuit.

另外，第14圖及第15圖所示的例子係使用N通道MOSFET 79a來構成控制開關84，第16圖所示的例子係使用P通道MOSFET 79b來構成控制開關84。第16圖所示的控制開關84之情況時，控制電路83係構成為從端子T6輸出與第4圖所示的例子相反極性的訊號。In addition, the example shown in FIGS. 14 and 15 uses the N-channel MOSFET 79a to configure the control switch 84, and the example shown in FIG. 16 uses the P-channel MOSFET 79b to configure the control switch 84. In the case of controlling the switch 84 shown in FIG. 16, the control circuit 83 is configured to output a signal having a polarity opposite to the example shown in FIG. 4 from the terminal T6.

另外，第16圖中，電流減低部87亦可利用上述的緩衝電路而構成。又，為了能夠用電阻R10快速消耗掉投入用線圈22的電感能量，二極體86以採用快速回復二極體(fast recovery diode)為較佳。In addition, in FIG. 16, the current reduction section 87 may be configured using the above-mentioned snubber circuit. In addition, in order to be able to quickly consume the inductance energy of the input coil 22 with the resistor R10, it is preferable to use a fast recovery diode for the diode 86.

在停止對於投入用線圈22之激磁電流的供給之際，若沒有電流減低部87，經由二極體86而流到投入用線圈22之回流電流會致力於將電磁螺線管20維持於投入動作。因此，會有難以在斷路器1的投入動作剛開始之後斷開之情況，但由於本實施形態之斷路器1設有電流減低部87，所以可減低經由二極體86而流到投入用線圈22之回流電流。When the supply of the exciting current to the input coil 22 is stopped, if there is no current reduction section 87, the return current flowing through the diode 86 to the input coil 22 will be dedicated to maintaining the electromagnetic solenoid 20 in the input operation . Therefore, it may be difficult to open the circuit breaker 1 immediately after the switching operation of the circuit breaker 1 is started. However, since the circuit breaker 1 of the present embodiment is provided with a current reducing part 87, the flow to the input coil via the diode 86 can be reduced 22 return current.

藉此，不採用複雜的傳動機構，就可迅速地進行斷路器1之投入動作剛開始之後的斷開。另外，電流減低部87的電阻R10的値及電容器C10的値係設定為能夠在對於投入用線圈22之激磁電流的供給停止後，將回流電流減低到不會阻礙跳脫機構50所進行之跳脫。例如，構成電流減低部87之電阻R10的値係設定為能夠將回流電流減低到可使回流電流所產生的投入力低於斷開時的電磁反斥力及跳脫力之値。Thereby, without using a complicated transmission mechanism, the opening operation of the circuit breaker 1 can be quickly opened immediately after the start of the switching operation. In addition, the value of the resistance R10 of the current reduction unit 87 and the value of the capacitor C10 are set so that after the supply of the excitation current to the input coil 22 is stopped, the return current is reduced so as not to hinder the jump by the trip mechanism 50 Off. For example, the value of the resistor R10 constituting the current reduction section 87 is set to a value that can reduce the return current so that the input force generated by the return current is lower than the electromagnetic repulsive force and the trip force at the time of disconnection.

另外，上述的例子已說明了在投入動作剛開始之後檢測到過電流或漏電之情況的例子，但斷路器1在投入動作剛開始之後就從內部OFF開關74或跳脫附屬裝置75輸出有斷開訊號時，亦能夠不採用複雜的傳動機構而進行投入動作剛開始之後的斷開。In addition, the above example has explained an example in which an overcurrent or leakage is detected immediately after the start of the start operation, but the output of the circuit breaker 1 from the internal OFF switch 74 or the trip attachment device 75 is broken immediately after the start of the start operation When the signal is turned on, it can also be disconnected immediately after the input operation without using a complicated transmission mechanism.

在此，說明鐵心棒23的移動位置與作用於電磁螺線管20之負荷量的關係。第17圖係顯示實施形態1中之鐵心棒的移動位置與作用於電磁螺線管之負荷量的關係之圖。鐵心棒23係在第5圖所示的位置到第9圖所示的最大投入位置之範圍內移動。Here, the relationship between the moving position of the core rod 23 and the load acting on the electromagnetic solenoid 20 will be described. Fig. 17 is a diagram showing the relationship between the moving position of the core rod and the load acting on the electromagnetic solenoid in the first embodiment. The core rod 23 is moved from the position shown in FIG. 5 to the maximum input position shown in FIG. 9.

以下，將鐵心棒23向上方的移動稱為前進，將鐵心棒23向下方的移動稱為後退，將鐵心棒23前進時的移動位置稱為前進位置，將鐵心棒23後退時的移動位置稱為後退位置，將鐵心棒23前進時作用於電磁螺線管20之負荷稱為前進時負荷，將鐵心棒23後退時作用於電磁螺線管20之負荷稱為後退時負荷。Hereinafter, the movement of the iron core rod 23 upward is referred to as forward, the movement of the iron core rod 23 downward is referred to as backward, the movement position when the iron core rod 23 is advanced is referred to as the forward position, and the movement position when the iron core rod 23 is retracted is referred to as For the backward position, the load acting on the electromagnetic solenoid 20 when the iron core bar 23 moves forward is referred to as the forward load, and the load acting on the electromagnetic solenoid 20 when the iron core bar 23 moves backward is referred to as the reverse time load.

如第17圖所示，鐵心棒23的前進位置於從斷開狀態位置至成為接點抵接開始位置為止的斷開狀態位置時，係在固定接點10與可動接點11未接觸之狀態下驅動傳動機構30。因此，鐵心棒23的前進位置於斷開狀態位置時，作用於電磁螺線管20之負荷相對較小。然後，鐵心棒23的前進位置成為接點抵接開始位置時，可動接點11與固定接點10之接觸開始。因此，槓桿32係經由連結銷13、38承受來自接觸壓力彈簧8之彈性恢復力作為以槓桿軸心36為中心逆時針轉動之負荷轉矩，作用於電磁螺線管20之投入負荷會急遽變大。As shown in FIG. 17, when the advance position of the iron core bar 23 is in the off-state position from the off-state position to the contact abutment start position, it is in a state where the fixed contact 10 and the movable contact 11 are not in contact Bottom drive transmission mechanism 30. Therefore, when the advance position of the core rod 23 is in the off state position, the load acting on the electromagnetic solenoid 20 is relatively small. Then, when the advancing position of the core rod 23 becomes the contact abutment start position, the contact between the movable contact 11 and the fixed contact 10 starts. Therefore, the lever 32 receives the elastic restoring force from the contact pressure spring 8 via the connecting pins 13 and 38 as the load torque that rotates counterclockwise about the lever axis 36, and the input load acting on the electromagnetic solenoid 20 changes rapidly Big.

然而，鐵心棒23更向前進時，作用於成為作用點之連結銷38之來自接觸壓力彈簧8之彈性恢復力中之垂直於連結槓桿軸心36及連結銷38的直線的方向之分量係急遽變小。因此，以槓桿軸心36為中心之逆時針的負荷轉矩開始減小。隨著該負荷轉矩之減小，使槓桿32轉動所需的電磁螺線管20的投入負荷也跟著減小。However, when the iron core bar 23 is further advanced, the component of the elastic restoring force from the contact pressure spring 8 acting on the connecting pin 38 that becomes the point of action is a component perpendicular to the direction of the straight line connecting the lever axis 36 and the connecting pin 38. Become smaller. Therefore, the counterclockwise load torque centering on the lever axis 36 starts to decrease. As the load torque decreases, the input load of the electromagnetic solenoid 20 required to rotate the lever 32 also decreases.

鐵心棒23更進一步前進，前進位置在投入動作開始後終於來到最大投入位置，此時的斷路器1的機構狀態係槓桿32及絕緣桿33呈接近一直線之狀態，由槓桿32及絕緣桿33所構成的肘節機構最接近死點。因此，作用於連結銷38之來自接觸壓力彈簧8之彈性恢復力中之垂直於連結槓桿軸心36及連結銷38的直線的方向之分量接近於0，使槓桿32轉動所需的電磁螺線管20的投入負荷也急遽接近於0。亦即，成為：配合隨著從斷開狀態位置到投入狀態位置之位移而增加之電磁螺線管20的投入力，為了施加負荷轉矩於槓桿32而縮小電磁螺線管20的鐵心棒23的前進距離之負荷力作用距離之構成。因而，不僅可效率良好地將電磁螺線管20的電磁吸力利用於斷路器1的投入動作，而且可使用配合斷路器1的投入動作所需的負荷力作用距離的變化之大小的電磁螺線管20，而可謀求電磁螺線管20的小型化及低成本化。另外，實施形態1之斷路器1係構成為鐵心棒23在上述肘節機構越過死點之前停止前進，由於從投入狀態變為斷開狀態時不會越過死點，所以可避免跳脫機構50的構成變複雜。The iron core rod 23 further advances, and the advanced position finally reaches the maximum input position after the start of the input operation. At this time, the mechanical state of the circuit breaker 1 is that the lever 32 and the insulating rod 33 are in a nearly linear state, and the lever 32 and the insulating rod 33 The toggle mechanism formed is closest to the dead center. Therefore, the component of the elastic restoring force from the contact pressure spring 8 acting on the connecting pin 38 that is perpendicular to the straight line connecting the lever axis 36 and the connecting pin 38 is close to 0, and the electromagnetic spiral required to rotate the lever 32 The input load of the tube 20 is also sharply close to zero. That is, the iron rod 23 of the electromagnetic solenoid 20 is reduced in order to apply the load torque to the lever 32 in accordance with the input force of the electromagnetic solenoid 20 that increases with the displacement from the off-state position to the put-in state position. The composition of the distance of the load force acting distance. Therefore, not only can the electromagnetic suction force of the electromagnetic solenoid 20 be efficiently used for the switching operation of the circuit breaker 1, but also an electromagnetic solenoid of a magnitude corresponding to a change in the load force acting distance required for the switching operation of the circuit breaker 1 can be used For the tube 20, the electromagnetic solenoid 20 can be reduced in size and cost. In addition, the circuit breaker 1 of the first embodiment is configured such that the core rod 23 stops advancing before the toggle mechanism passes the dead point, and since the dead state is not passed when the input state is changed to the off state, the trip mechanism 50 can be avoided The composition becomes complicated.

在斷路器1的接點抵接後的狀態下，由於可動接點11與固定接點10接觸而產生受到來自接觸壓力彈簧8的彈性恢復力之接觸壓力時，就產生經由絕緣桿33及槓桿32而作用於槓桿軸37之前後方向之推壓力。對於槓桿軸37之推壓力產生時，會產生對於槓桿軸37之摩擦轉矩，並且，加上經由連結連桿31而傳遞到電磁螺線管20之負荷的前後方向的分量造成之電磁螺線管20的上下方向的滑動摩擦負荷，使電磁螺線管20的投入負荷增大而成為無法忽視的摩擦力。When the contact of the circuit breaker 1 is in contact, when the movable contact 11 comes into contact with the fixed contact 10 and the contact pressure generated by the elastic restoring force from the contact pressure spring 8 occurs, the insulation rod 33 and the lever are generated. 32 and the pushing force acting on the lever shaft 37 in the front and back directions. When the pushing force on the lever shaft 37 is generated, friction torque on the lever shaft 37 is generated, and the electromagnetic spiral caused by the component in the front-rear direction of the load transmitted to the electromagnetic solenoid 20 via the connecting link 31 is added The sliding friction load in the vertical direction of the tube 20 increases the input load of the electromagnetic solenoid 20 and becomes a friction force that cannot be ignored.

鐵心棒23到達最大投入位置後，在鐵心棒23的移動方向轉變為後退之際，作用於傳動機構30全體之摩擦力的方向也跟著改變。因此，可藉由減少起因於摩擦力之跳脫負荷之效果，減低投入狀態中施加於跳脫機構50之負荷。After the core rod 23 reaches the maximum input position, the direction of the frictional force acting on the entire transmission mechanism 30 also changes as the movement direction of the core rod 23 changes to retreat. Therefore, the load applied to the trip mechanism 50 in the input state can be reduced by reducing the effect of the trip load due to friction.

如上所述，因為可減低在投入狀態中施加於跳脫機構50的負荷，所以可使跳脫機構50的構成簡易化。因而可謀求跳脫機構50的小型化，可謀求斷路器1的小型化，而且，藉由削減跳脫機構50的構件數而可在跳脫機構50的耐久性上使可靠性提高。As described above, since the load applied to the trip mechanism 50 in the throw-in state can be reduced, the configuration of the trip mechanism 50 can be simplified. Therefore, the trip mechanism 50 can be miniaturized, the circuit breaker 1 can be miniaturized, and the reliability of the trip mechanism 50 can be improved by reducing the number of components of the trip mechanism 50.

至可動接點11與固定接點10接觸為止，主要隨著連結銷13、38、槓桿軸37、連結銷34、35的各轉動部分的轉動產生摩擦力。因此，相較於可動接點11與固定接點10接觸後之來自接觸壓力彈簧8的彈性恢復力所致之接觸壓力產生後的狀態，至可動接點11與固定接點10接觸為止，對於槓桿軸37之摩擦轉矩以及電磁螺線管20的上下方向的滑動摩擦負荷較小。因此，如第17圖所示，接點抵接前之由於摩擦力所造成之前進時與後退時的投入負荷之差係小於接點抵接後之由於摩擦力所造成之投入負荷之差。Until the movable contact 11 comes into contact with the fixed contact 10, frictional forces are mainly generated as the rotating parts of the connecting pins 13, 38, the lever shaft 37, and the connecting pins 34, 35 rotate. Therefore, compared with the state after the contact pressure caused by the elastic restoring force from the contact pressure spring 8 after the movable contact 11 comes into contact with the fixed contact 10, until the movable contact 11 comes into contact with the fixed contact 10, The friction torque of the lever shaft 37 and the sliding friction load of the electromagnetic solenoid 20 in the vertical direction are small. Therefore, as shown in FIG. 17, the difference between the input load caused by the friction force before the contact abuts and the input load caused by the friction force after the contact abutment is smaller than the difference.

關於斷路器1的一連串的投入動作及投入負荷，斷路器1中之電磁螺線管20的投入所必須的負荷特性可公式化。例如，可藉由將第5圖、第7圖、第9圖及第12圖的各狀態中之電磁螺線管20的投入所必須的負荷特性予以公式化，而設計出利用機構摩擦而大幅減低跳脫時的機構負荷，且電磁螺線管20的投入負荷特性具有遲滯性之斷路器1。Regarding the series of input operations and input loads of the circuit breaker 1, the load characteristics necessary for the input of the electromagnetic solenoid 20 in the circuit breaker 1 can be formulated. For example, the load characteristics necessary for the input of the electromagnetic solenoid 20 in each state of FIG. 5, FIG. 7, FIG. 9, and FIG. 12 can be formulated to design a mechanism to greatly reduce the friction of the mechanism. The circuit breaker 1 has a mechanical load at the time of tripping, and the input load characteristic of the electromagnetic solenoid 20 has hysteresis.

如以上所述，實施形態1之斷路器1係具備殼體2、電源側端子3、可動子6、電磁螺線管20、傳動機構30、以及驅動電路70。電源側端子3為固定端子的一例，安裝有固定接點10，且固定於殼體2。可動子6係安裝有與固定接點10相向之可動接點11。電磁螺線管20係具有直線狀地移動之鐵心棒23。鐵心棒23為心棒的一例。傳動機構30係使可動子6隨著鐵心棒23的移動而移動，從可動接點11與固定接點10分開之斷開狀態變為可動接點11與固定接點10接觸而通電之投入狀態。驅動電路70係對於電磁螺線管20的投入用線圈22通電而驅動電磁螺線管20。驅動電路70係具備二極體86與減低流到二極體86的電流之電流減低部87兩者的串聯體85，串聯體85係與電磁螺線管20的投入用線圈22並聯連接。藉此，不採用複雜的機構，就可進行投入動作剛開始之後的斷開。因此，可謀求傳動機構30的簡單化。As described above, the circuit breaker 1 of the first embodiment includes the case 2, the power-side terminal 3, the mover 6, the electromagnetic solenoid 20, the transmission mechanism 30, and the drive circuit 70. The power-side terminal 3 is an example of a fixed terminal, a fixed contact 10 is attached, and is fixed to the case 2. The movable element 6 is equipped with a movable contact 11 facing the fixed contact 10. The electromagnetic solenoid 20 has a core rod 23 that moves linearly. The core rod 23 is an example of a core rod. The transmission mechanism 30 causes the movable element 6 to move with the movement of the iron core rod 23, from the disconnected state where the movable contact 11 is separated from the fixed contact 10 to the powered-on state where the movable contact 11 contacts the fixed contact 10 and is energized . The drive circuit 70 energizes the input coil 22 of the electromagnetic solenoid 20 to drive the electromagnetic solenoid 20. The drive circuit 70 is provided with a series body 85 of both a diode 86 and a current reducing part 87 that reduces the current flowing to the diode 86, and the series body 85 is connected in parallel with the input coil 22 of the electromagnetic solenoid 20. Thereby, the disconnection immediately after the start of the throwing operation can be performed without using a complicated mechanism. Therefore, the transmission mechanism 30 can be simplified.

另外，電流減低部87係包含電阻R10、或包含電阻R10及電容器C10。藉此，可容易地減低流到二極體86之電流。In addition, the current reduction unit 87 includes the resistor R10, or includes the resistor R10 and the capacitor C10. By this, the current flowing to the diode 86 can be easily reduced.

又，斷路器1係具備：檢測藉由固定接點10與可動接點11之接觸而成為導通狀態之電路的過電流或漏電，並將表示檢測的結果之跳脫指令作為檢測結果而輸出之檢測部76。驅動電路70係根據檢測部76所輸出的跳脫指令，停止對於投入用線圈22之通電。藉此，在斷路器1的投入動作剛開始之後發生電路的過電流或漏電時，不採用複雜的機構就可進行斷路器1的投入動作剛開始之後的斷開。因此，可謀求傳動機構30的簡單化。其中，跳脫指令為檢測訊號的一例。In addition, the circuit breaker 1 is provided with: detecting the overcurrent or leakage of the circuit in the conductive state by the contact of the fixed contact 10 and the movable contact 11, and outputting the trip command indicating the detection result as the detection result Detection section 76. The drive circuit 70 stops the energization of the input coil 22 based on the trip command output by the detection unit 76. Thereby, when an overcurrent or a leakage of the circuit occurs immediately after the start operation of the circuit breaker 1, the disconnection immediately after the start operation of the circuit breaker 1 can be performed without using a complicated mechanism. Therefore, the transmission mechanism 30 can be simplified. Among them, the trip command is an example of the detection signal.

又，實施形態1之斷路器1係具備跳脫機構50。跳脫機構50可與傳動機構30卡合而進行投入狀態之保持，且可解除與傳動機構30之卡合而解除投入狀態之保持。傳動機構30係具備槓桿32、以及絕緣桿33。槓桿32係隨著鐵心棒23的移動而以固定於殼體2之槓桿軸心36為中心轉動。槓桿軸心36為第一軸心的一例。絕緣桿33係一端部33a可轉動地連結於槓桿32的一端部32a，另一端部33b可轉動地連結於可動子6。電磁螺線管20的鐵心棒23係在由槓桿32及絕緣桿33所構成的肘節機構到達死點之前，到達限制鐵心棒23的移動之最大移動位置。因此，例如，可藉由將鐵心棒23的最大移動位置設定在肘節機構快要到達死點之前的位置，利用肘節機構的槓桿效果，使要使槓桿32轉動所需的電磁螺線管20的投入負荷驟減到趨近於0。因此，可減低在投入狀態之跳脫機構50承受的負荷。上述的快到死點之前的位置係指即使有製造誤差也不會到達死點之位置。最大移動位置為第一位置的一例。又，跳脫機構50係在鐵心棒23到達最大移動位置之後後退，於投入完成位置之狀態與傳動機構30卡合而進行投入狀態之保持。投入完成位置為第二位置的一例。藉此，因在鐵心棒23的移動方向轉換為後退之際，作用於傳動機構30全體的摩擦力的方向也跟著改變，所以可藉由起因於摩擦力之負荷的減少效果，亦即投入負荷特性的遲滯性，減低投入狀態下的跳脫機構50之負荷。因此，可減低將斷路器的跳脫機構做成為複雜機構之必要性，而可謀求跳脫機構50的小型化及組裝性的提高。In addition, the circuit breaker 1 of the first embodiment includes a trip mechanism 50. The trip mechanism 50 can be engaged with the transmission mechanism 30 to maintain the input state, and can be released from the engagement with the transmission mechanism 30 to release the maintenance of the input state. The transmission mechanism 30 includes a lever 32 and an insulating rod 33. The lever 32 rotates about the lever axis 36 fixed to the housing 2 as the iron core rod 23 moves. The lever axis 36 is an example of a first axis. The insulating rod 33 has one end 33a rotatably connected to the one end 32a of the lever 32 and the other end 33b rotatably connected to the mover 6. The core rod 23 of the electromagnetic solenoid 20 reaches the maximum movement position that restricts the movement of the core rod 23 before the toggle mechanism composed of the lever 32 and the insulating rod 33 reaches the dead point. Therefore, for example, by setting the maximum moving position of the core rod 23 to a position immediately before the toggle mechanism reaches the dead point, the lever effect of the toggle mechanism can be used to make the electromagnetic solenoid 20 required to rotate the lever 32 The input load suddenly dropped to zero. Therefore, the load on the trip mechanism 50 in the put state can be reduced. The above-mentioned position immediately before the dead point refers to a position that will not reach the dead point even if there is a manufacturing error. The maximum moving position is an example of the first position. In addition, the trip mechanism 50 moves backward after the core rod 23 reaches the maximum movement position, and engages with the transmission mechanism 30 at the state of the input completion position to maintain the input state. The input completion position is an example of the second position. With this, the direction of the frictional force acting on the entire transmission mechanism 30 also changes when the moving direction of the iron core bar 23 is shifted back, so that the load reduction effect due to the frictional force, that is, the input load The hysteresis of the characteristic reduces the load of the trip mechanism 50 in the input state. Therefore, the necessity of making the trip mechanism of the circuit breaker into a complicated mechanism can be reduced, and the trip mechanism 50 can be reduced in size and improved in assemblability.

又，斷路器1係具備安裝於槓桿32的另一端部32b之卡合銷51。卡合銷51為卡合部的一例。另外，跳脫機構50係具備跳脫槓桿52、以及跳脫棒54。跳脫槓桿52係以具有朝向卡合銷51的方向被彈壓之狀態可轉動地安裝於殼體2，在從斷開狀態變為投入狀態之投入過程中，維持與卡合銷51接觸之狀態，在鐵心棒23位於投入完成位置之狀態下，與卡合銷51卡合而限制槓桿32繞槓桿軸心36轉動。跳脫棒54係進行跳脫槓桿52的轉動之限制及限制之解除。如此，跳脫機構50係除了卡合銷51之外，可利用包含跳脫槓桿52及跳脫棒54之至少兩個構件而構成，因此可謀求跳脫機構50之小型化及組裝性之提高。又，從斷開狀態一直到投入狀態都使跳脫槓桿52與卡合銷51接觸，所以僅使跳脫槓桿52往離開卡合銷51的方向的可移動量變化，就可容易地進行跳脫動作。In addition, the circuit breaker 1 includes an engagement pin 51 attached to the other end 32b of the lever 32. The engagement pin 51 is an example of an engagement part. In addition, the trip mechanism 50 includes a trip lever 52 and a trip bar 54. The trip lever 52 is rotatably attached to the housing 2 in a state of being urged toward the engagement pin 51, and maintains a state of contact with the engagement pin 51 during the input process from the disconnected state to the input state In a state where the iron core bar 23 is at the input completion position, it engages with the engagement pin 51 to restrict the lever 32 from rotating around the lever axis 36. The trip bar 54 is used to restrict and release the rotation of the trip lever 52. In this way, the trip mechanism 50 can be composed of at least two members including the trip lever 52 and the trip bar 54 in addition to the engagement pin 51, so the trip mechanism 50 can be miniaturized and the assembly can be improved . In addition, the trip lever 52 is brought into contact with the engagement pin 51 from the disconnected state to the throw-in state, so the trip can be easily performed only by changing the movable amount of the trip lever 52 in the direction away from the engagement pin 51. Take off.

又，跳脫槓桿52係具備在投入過程中，卡合銷51係可移動地接觸，且具有以槓桿軸心36為中心之圓弧形狀之圓弧部56、以及在投入狀態與卡合銷51卡合之凹部51c。藉此，在投入過程中，跳脫槓桿52的位置未變化，所以可抑制使傳動機構30驅動之電磁螺線管20的投入負荷在投入過程中因跳脫槓桿52而變動。In addition, the trip lever 52 is provided with an engaging pin 51 which is movably contacted during the input process, and has an arc-shaped arc portion 56 centered on the lever axis 36 as the center, and an engaging pin in the input state 51 engages the concave portion 51c. Thereby, the position of the trip lever 52 does not change during the throw-in process, so that the throw-in load of the electromagnetic solenoid 20 that drives the transmission mechanism 30 can be suppressed from changing due to the trip lever 52 during the throw-in process.

又，跳脫槓桿52係具備形成有圓弧部分58a及平坦部分58b且以固定於殼體2之跳脫棒軸心61為中心而轉動之半圓部58。跳脫棒軸心61為第二軸心的一例。跳脫槓桿52係在斷開狀態與半圓部58的平坦部分58b接觸而限制轉動，而在投入狀態與半圓部58的圓弧部分58a接觸而限制轉動。藉此，僅使跳脫槓桿52轉動，就可容易地調整跳脫槓桿52之往離開卡合銷51的方向的可移動量。In addition, the trip lever 52 includes a semicircular portion 58 formed with an arc portion 58a and a flat portion 58b and rotating around the trip bar axis 61 fixed to the housing 2 as a center. The tripping rod axis 61 is an example of a second axis. The trip lever 52 contacts the flat portion 58b of the semicircular portion 58 in the off state to restrict rotation, and contacts the arc portion 58a of the semicircular portion 58 in the throwing state to restrict rotation. Thereby, by merely rotating the trip lever 52, the amount of movement of the trip lever 52 in the direction away from the engagement pin 51 can be easily adjusted.

實施形態2. 實施形態2之斷路器與實施形態1之斷路器1的不同點在於設有實現依據投入時的電流判斷是否瞬間跳脫(Making Current Release；MCR)機能的驅動電路。以下，對於具有與實施形態1同樣機能之構成元件標記相同的符號而省略說明，以與實施形態1之斷路器1不同的點為中心進行說明。Embodiment 2. The circuit breaker of the second embodiment differs from the circuit breaker 1 of the first embodiment in that it is provided with a drive circuit that realizes the function of judging whether to make an instantaneous trip (MCR) based on the current at the time of input. Hereinafter, the constituent elements having the same functions as those of the first embodiment are denoted by the same symbols, and descriptions thereof will be omitted, and the differences from the circuit breaker 1 of the first embodiment will be mainly described.

首先，針對實現MCR機能之MCR機構進行說明。MCR機構係在斷路器的投入動作時使瞬間跳脫特性有效以對於投入動作時的短路事故進行瞬間跳脫，而在斷路器的投入動作完成後使瞬間跳脫特性無效。藉此，可將衝擊電流大的負載機器或下位斷路器的選擇協調領域擴大。First, the MCR mechanism that realizes the MCR function will be described. The MCR mechanism makes the instantaneous tripping characteristic effective when the circuit breaker is put into operation to instantaneously trip the short-circuit accident when the circuit breaker is put into operation, and makes the instantaneous tripping characteristic invalid after the circuit breaker is put into operation. With this, the selection and coordination field of load devices with large inrush current or lower circuit breakers can be expanded.

第18圖及第19圖係顯示MCR機構的構成例之圖，第18圖係顯示斷路器的投入動作時的狀態，第19圖係顯示斷路器的投入動作完成後的狀態。以下，所謂的順時針及逆時針係指第18圖及第19圖中之順時針及逆時針方向。而且，第18圖及第19圖所示的MCR機構100係以包含在上述斷路器1來進行說明。Figures 18 and 19 are diagrams showing examples of the configuration of the MCR mechanism. Figure 18 shows the state when the circuit breaker is put into operation, and Figure 19 shows the state after the circuit breaker is put into operation. Hereinafter, the so-called clockwise and counterclockwise means the clockwise and counterclockwise directions in FIGS. 18 and 19. Furthermore, the MCR mechanism 100 shown in FIGS. 18 and 19 will be described as being included in the circuit breaker 1 described above.

第18圖所示的MCR機構100係具備MCR板101、絕緣板102、微動開關103、以及輔助板104。絕緣板102、微動開關103、及輔助板104，係利用螺絲105鎖住兩點而固定在MCR板101上。微動開關103係採用常閉的端子。微動開關103中設有致動桿106，該致動桿106係固定於可轉動地支持在MCR板101的轉動軸109。The MCR mechanism 100 shown in FIG. 18 includes an MCR board 101, an insulating board 102, a micro switch 103, and an auxiliary board 104. The insulating plate 102, the micro switch 103, and the auxiliary plate 104 are fixed to the MCR board 101 by locking two points with screws 105. The micro switch 103 adopts normally closed terminals. The micro switch 103 is provided with an actuating lever 106 which is fixed to a rotating shaft 109 rotatably supported on the MCR board 101.

MCR機構100係具備安裝於致動桿106的另一端之重錘107、以及勾在MCR板101與重錘107之間之彈簧108。彈簧108係朝向以轉動軸109為中心逆時針轉動之方向施力於致動桿106。因此，在未進行斷路器1的投入動作之狀態下，如第19圖所示，致動桿106的一端係壓住微動開關按鈕103a。微動開關103係在微動開關按鈕103a被壓住的期間，恆常地發送ON訊號至第3圖及第4圖所示的跳脫繼電器98。因此，跳脫繼電器98中，瞬間跳脫特性成為無效。The MCR mechanism 100 includes a weight 107 attached to the other end of the actuation lever 106 and a spring 108 hooked between the MCR plate 101 and the weight 107. The spring 108 urges the actuating lever 106 in a counterclockwise direction with the rotation shaft 109 as the center. Therefore, in a state where the opening operation of the circuit breaker 1 is not performed, as shown in FIG. 19, one end of the actuation lever 106 presses the micro switch button 103a. The micro switch 103 constantly transmits an ON signal to the trip relay 98 shown in FIGS. 3 and 4 while the micro switch button 103a is pressed. Therefore, in the trip relay 98, the instantaneous trip characteristic becomes invalid.

致動桿106的受動部106a係接受使斷路器1的主接點開閉之機構部中的槓桿軸37的動作之形狀。致動桿106係藉由斷路器1的投入動作時之槓桿軸37的轉動，受動部106a以轉動軸109為中心順時針轉動，其一端按壓微動開關按鈕103a數微秒左右。藉此，微動開關103係發送數微秒左右的OFF訊號至跳脫繼電器98。跳脫繼電器98中，在數微秒左右的OFF訊號輸入的期間，瞬間跳脫特性成為有效。如上所述，MCR機構100可在斷路器1的投入動作時以外使瞬間跳脫特性無效，而在斷路器1的投入動作時使瞬間跳脫特性有效。The driven portion 106a of the actuation lever 106 is shaped to receive the operation of the lever shaft 37 in the mechanism portion that opens and closes the main contact of the circuit breaker 1. The actuation lever 106 is rotated by the lever shaft 37 when the circuit breaker 1 is put into operation, the driven part 106a rotates clockwise around the rotation shaft 109, and one end thereof presses the micro switch button 103a for about several microseconds. Accordingly, the micro switch 103 sends an OFF signal of about several microseconds to the trip relay 98. In the trip relay 98, the instantaneous trip characteristic becomes effective during the OFF signal input of about several microseconds. As described above, the MCR mechanism 100 can invalidate the instantaneous tripping characteristics other than when the circuit breaker 1 is put in operation, and can make the instantaneous tripping characteristics effective when the circuit breaker 1 is put in operation.

接著，針對實施形態2之斷路器的驅動電路進行說明。第20圖係顯示本發明的實施形態2之包含驅動電路之斷路器的電路的構成例之圖。如第20圖所示，實施形態2之斷路器1A的驅動電路70A與斷路器1的驅動電路70的不同點在於具有實現MCR機能的MCR電路79。Next, the drive circuit of the circuit breaker according to the second embodiment will be described. Fig. 20 is a diagram showing a configuration example of a circuit including a circuit breaker of a driving circuit according to Embodiment 2 of the present invention. As shown in FIG. 20, the drive circuit 70A of the circuit breaker 1A of the second embodiment is different from the drive circuit 70 of the circuit breaker 1 in that it has an MCR circuit 79 that realizes the MCR function.

如第20圖所示，MCR電路79係與端子T6連接而接受從邏輯與電路93輸出訊號的輸入。從邏輯與電路93輸入至MCR電路79之訊號與從邏輯與電路93輸入至控制開關84之訊號為相同的訊號。MCR電路79係根據從邏輯與電路93輸入的訊號，而輸出ON訊號或OFF訊號至跳脫繼電器98。MCR電路79為了要保持控制電路83等與跳脫繼電器98之絕緣，而構成為包含光電耦合器等。As shown in FIG. 20, the MCR circuit 79 is connected to the terminal T6 and receives input of a signal output from the logical AND circuit 93. The signal input from the logical AND circuit 93 to the MCR circuit 79 and the signal input from the logical AND circuit 93 to the control switch 84 are the same signal. The MCR circuit 79 outputs an ON signal or an OFF signal to the trip relay 98 according to the signal input from the logical AND circuit 93. The MCR circuit 79 includes a photocoupler and the like in order to maintain the insulation of the control circuit 83 and the trip relay 98.

MCR電路79係在從邏輯與電路93輸入ON訊號時，將高準位的電壓之ON訊號輸出至跳脫繼電器98。輸出至跳脫繼電器98之ON訊號係用來使瞬間跳脫特性有效之訊號，以下有時亦稱為MCR控制訊號。跳脫繼電器98係在從MCR電路79輸出有MCR控制訊號的狀態下，根據變流器97的二次側電流而檢測出過電流或漏電時，輸出跳脫指令至驅動電路78。藉此，進行對於跳脫用線圈77之通電，使得斷路器1A成為斷開狀態。The MCR circuit 79 outputs the ON signal of the high-level voltage to the trip relay 98 when the ON signal is input from the logical AND circuit 93. The ON signal output to the trip relay 98 is used to make the instantaneous trip feature effective, and is also sometimes referred to as an MCR control signal below. The trip relay 98 outputs a trip command to the drive circuit 78 when overcurrent or leakage is detected based on the secondary side current of the converter 97 in the state where the MCR control signal is output from the MCR circuit 79. As a result, the tripping coil 77 is energized, and the circuit breaker 1A is turned off.

另外，MCR電路79係在從邏輯與電路93輸入OFF訊號時，將用來使瞬間跳脫特性無效之低準位的電壓輸出至跳脫繼電器98。跳脫繼電器98係在從MCR電路79輸出低準位的電壓之狀態下，即使根據變流器97的二次側電流而檢測出過電流或漏電時，亦不輸出跳脫指令至驅動電路78。藉此，可在斷路器1A的投入動作完成後使瞬間跳脫特性無效。In addition, when the OFF signal is input from the logical AND circuit 93, the MCR circuit 79 outputs a low-level voltage for invalidating the instantaneous tripping characteristic to the tripping relay 98. The trip relay 98 is in a state where a low-level voltage is output from the MCR circuit 79, and even if overcurrent or leakage is detected based on the secondary side current of the converter 97, a trip command is not output to the drive circuit 78 . This makes it possible to invalidate the instantaneous tripping characteristic after the switching operation of the circuit breaker 1A is completed.

第21圖係用來說明實施形態2之斷路器的MCR機能之時序圖。在時刻t1，內部ON開關71或外部ON開關72受到ON操作時，如第21圖所示，從邏輯或電路91將作為投入訊號之高準位的電壓輸出至閂鎖電路92。閂鎖電路92係在從邏輯或電路91輸出投入訊號時，將高準位的電壓輸出至邏輯與電路93。因此，邏輯與電路93將高準位的電壓作為ON訊號而輸出至MCR電路79及控制開關84。MCR電路79係在邏輯與電路93輸出有ON訊號的期間，將高準位的電壓作為MCR控制訊號而輸出至跳脫繼電器98。藉此，使瞬間跳脫特性在斷路器1A的投入動作時成為有效。Fig. 21 is a timing chart for explaining the MCR function of the circuit breaker in the second embodiment. At time t1, when the internal ON switch 71 or the external ON switch 72 is turned ON, as shown in FIG. 21, the slave OR circuit 91 outputs the voltage as the high level of the input signal to the latch circuit 92. The latch circuit 92 outputs a high-level voltage to the logical AND circuit 93 when the input signal is output from the logical OR circuit 91. Therefore, the logical AND circuit 93 outputs the high-level voltage as the ON signal to the MCR circuit 79 and the control switch 84. The MCR circuit 79 outputs the high level voltage as the MCR control signal to the trip relay 98 while the logic AND circuit 93 outputs an ON signal. This makes the instantaneous tripping characteristic effective when the circuit breaker 1A is put into operation.

控制開關84係在從邏輯與電路93經由端子T6輸出ON訊號時之情況，成為ON狀態。由於控制開關84成為ON狀態而進行對於投入用線圈22之激磁電流的供給。藉此，利用鐵心棒23進行之投入動作開始，在時刻t2，從與鐵心棒23成為投入狀態之動作連動的微動開關88輸出高準位的電壓至控制電路83。微動開關88輸出高準位的電壓時，使閂鎖電路92重設，從控制電路83輸出作為OFF訊號之低準位的電壓至控制開關84。The control switch 84 is turned ON when the ON signal is output from the logical AND circuit 93 via the terminal T6. Since the control switch 84 is turned ON, the exciting current to the input coil 22 is supplied. As a result, the throw-in operation by the iron core bar 23 is started, and at time t2, a high-level voltage is output to the control circuit 83 from the micro switch 88 linked to the operation of the iron core bar 23 in the throw-in state. When the micro switch 88 outputs a high level voltage, the latch circuit 92 is reset, and a low level voltage as an OFF signal is output from the control circuit 83 to the control switch 84.

如此，邏輯與電路93係在從時刻t1到時刻t2之期間，輸出作為ON訊號之高準位的電壓，所以MCR電路79係在時刻t1到時刻t2的期間，輸出作為MCR控制訊號之高準位的電壓至跳脫繼電器98。時刻t1到時刻t2之期間係例如200微秒左右，藉此，輸出穩定的MCR控制訊號至跳脫繼電器98。因而，可在輸出MCR控制訊號的期間，穩定地使跳脫繼電器98的瞬間跳脫特性有效化。In this way, the logic AND circuit 93 outputs the voltage as the high level of the ON signal during the period from time t1 to time t2, so the MCR circuit 79 outputs the high level as the MCR control signal during the period from time t1 to time t2 Position voltage to trip relay 98. The period from time t1 to time t2 is, for example, about 200 microseconds, whereby a stable MCR control signal is output to the trip relay 98. Therefore, while the MCR control signal is output, the instantaneous tripping characteristics of the tripping relay 98 can be effectively stabilized.

另外，在時刻t2之後，從邏輯與電路93輸出作為OFF訊號之低準位的電壓。MCR電路79係在從邏輯與電路93輸出OFF訊號的期間，將低準位的電壓輸出至跳脫繼電器98。藉此，使瞬間跳脫特性在斷路器1A的投入完成後無效化。In addition, after time t2, the logic AND circuit 93 outputs a low-level voltage as an OFF signal. The MCR circuit 79 outputs a low level voltage to the trip relay 98 while the logic AND circuit 93 outputs an OFF signal. As a result, the instantaneous tripping characteristic is invalidated after the circuit breaker 1A is completed.

另外，在控制開關84為第16圖所示的構成之情況時，控制電路83係輸出低準位的電壓作為ON訊號。此時，在控制電路83中，例如在邏輯與電路93與端子T6之間設置邏輯非電路。MCR電路79係在從控制電路83輸出低準位的電壓作為ON訊號之期間，將高準位的電壓作為MCR控制訊號而輸出至跳脫繼電器98。另外，從MCR電路79輸出的MCR控制訊號亦可為低準位的電壓。此時，跳脫繼電器98係以低準位的電壓使瞬間跳脫特性成為有效。In addition, when the control switch 84 has the configuration shown in FIG. 16, the control circuit 83 outputs a low-level voltage as an ON signal. At this time, in the control circuit 83, for example, a logical NOT circuit is provided between the logical AND circuit 93 and the terminal T6. The MCR circuit 79 outputs the low level voltage as the MCR control signal to the trip relay 98 while the low level voltage is output from the control circuit 83 as the ON signal. In addition, the MCR control signal output from the MCR circuit 79 may also be a low-level voltage. At this time, the trip relay 98 is effective at the instantaneous trip characteristic with a low level voltage.

如以上所述，實施形態2之斷路器1A係具備：在藉由固定接點10與可動接點11之接觸而成為導通狀態之電路發生過電流或漏電時輸出跳脫指令之跳脫繼電器98。驅動電路70A係具備作為第一控制電路的一例之控制電路83、以及作為第二控制電路的一例之MCR電路79。控制電路83係在內部ON開關71或外部ON開關72受到ON操作時，輸出用來驅動電磁螺線管20之ON訊號，並根據與電磁螺線管20的鐵心棒23成為投入狀態之動作連動之微動開關88輸出的訊號，使ON訊號之輸出停止。內部ON開關71或外部ON開關72為ON開關的一例。MCR電路79係在從控制電路83輸出ON訊號的期間，將MCR控制訊號輸出至跳脫繼電器98，使來自跳脫繼電器98的跳脫指令可輸出。藉此，斷路器1A可不設置如第18圖及第19圖所示的MCR機構100而實現MCR機能。As described above, the circuit breaker 1A of the second embodiment includes: a trip relay 98 that outputs a trip command when an overcurrent or leakage occurs in a circuit that is in a conductive state by contact between the fixed contact 10 and the movable contact 11 . The drive circuit 70A includes a control circuit 83 as an example of a first control circuit, and an MCR circuit 79 as an example of a second control circuit. The control circuit 83 outputs an ON signal for driving the electromagnetic solenoid 20 when the internal ON switch 71 or the external ON switch 72 is turned ON, and is interlocked according to the action that the iron rod 23 of the electromagnetic solenoid 20 becomes in the on state The signal output by the micro switch 88 stops the output of the ON signal. The internal ON switch 71 or the external ON switch 72 is an example of an ON switch. The MCR circuit 79 outputs the MCR control signal to the trip relay 98 while the ON signal is output from the control circuit 83 so that the trip command from the trip relay 98 can be output. With this, the circuit breaker 1A can realize the MCR function without providing the MCR mechanism 100 shown in FIGS. 18 and 19.

以上的實施形態所揭示的構成僅為說明本發明的內容的一例，還可與別的公知的技術相組合，或在未脫離本發明的主旨之範圍，將構成的一部省略或變更。The configuration disclosed in the above embodiments is only an example for explaining the content of the present invention, and it may be combined with other known technologies, or a part of the configuration may be omitted or changed without departing from the scope of the present invention.

1:斷路器 2:殼體 2a:壁部 3:電源側端子 4:負載側端子 5:可撓性導體 5a、6a、7a、31a、32a、33a、52a、54a:一端部 5b、6b、7b、31b、32b、33b、52b、54b:另一端部 6:可動子 7:可動子支架 7c:中間部 8:接觸壓力彈簧 9:可動子阻擋部 10:固定接點 11:可動接點 12:支架軸 12a:支架軸心 13、34、35、38:連結銷 20:電磁螺線管 21:磁軛 22:投入用線圈 23:鐵心棒 24:突出部 25:空隙 30:傳動機構 31:連結連桿 32:槓桿 33:絕緣桿 36:槓桿軸心 37:槓桿軸 40:開極彈簧 50:跳脫機構 51:卡合銷 52:跳脫槓桿 52c:凹部 53:第一復歸彈簧 54:跳脫棒 55:第二復歸彈簧 56:圓弧部 57:卡合面 58:半圓部 58a:圓弧部分 58b:平坦部分 59:卡合部 60:跳脫槓桿軸心 61:跳脫棒軸心 70、78:驅動電路 71:內部ON開關 72:外部ON開關 73:控制電源 74:內部OFF開關 75:跳脫附屬裝置 76:檢測部 77:跳脫用線圈 79:MCR電路 80:整流電路 81:定電壓電路 83:控制電路 84:控制開關 85:串聯體 86:二極體 87:電流減低部 88:微動開關 91、95:邏輯或電路 92:閂鎖電路 93:邏輯與電路 94:邏輯非電路 97:變流器 98:跳脫繼電器 100:MCR機構 101:MCR板 102:絕緣板 103:微動開關 103a:微動開關按鈕 104:輔助板 105:螺絲 106:致動桿 106a:受動部 107:重錘 108:彈簧 109:轉動軸 C10:電容器 R1、R2、R3、R4、R10:電阻 T1、T2、T3、T4、T5、T6:端子 1: circuit breaker 2: shell 2a: Wall 3: Power side terminal 4: Load side terminal 5: Flexible conductor 5a, 6a, 7a, 31a, 32a, 33a, 52a, 54a: one end 5b, 6b, 7b, 31b, 32b, 33b, 52b, 54b: the other end 6: mover 7: movable bracket 7c: middle part 8: contact pressure spring 9: movable block 10: fixed contact 11: movable contact 12: bracket shaft 12a: Support axis 13, 34, 35, 38: connecting pin 20: electromagnetic solenoid 21: Yoke 22: Input coil 23: Iron Rod 24: protrusion 25: gap 30: Transmission mechanism 31: connecting rod 32: Leverage 33: Insulated rod 36: lever axis 37: lever shaft 40: open pole spring 50: Tripping mechanism 51: Card lock 52: tripping the lever 52c: recess 53: The first return spring 54: Tripping stick 55: Second return spring 56: arc part 57: snap-in surface 58: Semicircle 58a: arc part 58b: flat part 59: Engagement Department 60: Trip lever axis 61: tripping off the shaft 70, 78: drive circuit 71: Internal ON switch 72: External ON switch 73: Control power 74: Internal OFF switch 75: Tripping attachment 76: Inspection Department 77: Trip coil 79: MCR circuit 80: rectifier circuit 81: Constant voltage circuit 83: control circuit 84: control switch 85: Tandem 86: Diode 87: Current reduction section 88: Micro switch 91, 95: logical OR circuit 92: Latch circuit 93: logic and circuit 94: logical NOT circuit 97: converter 98: Trip relay 100: MCR agency 101: MCR board 102: Insulation board 103: Micro switch 103a: Micro switch button 104: auxiliary board 105: screw 106: actuating lever 106a: driven part 107: Heavy hammer 108: spring 109: axis of rotation C10: Capacitor R1, R2, R3, R4, R10: resistance T1, T2, T3, T4, T5, T6: terminals

第1圖係顯示本發明的實施形態1之斷路器的構成例之斷面圖。 第2圖係第1圖所示的跳脫機構的放大圖。 第3圖係顯示實施形態1之包含驅動電路之斷路器的電路的構成例之圖。 第4圖係顯示實施形態1之驅動電路的具體構成的一例之圖。 第5圖係顯示實施形態1之斷路器的斷開狀態之構成圖。 第6圖係第5圖所示的跳脫機構的放大圖。 第7圖係顯示顯示實施形態1之斷路器的接點開始抵接的瞬間的狀態之構成圖。 第8圖係第7圖所示的跳脫機構的放大圖。 第9圖係顯示實施形態1之斷路器到達最大投入位置的狀態之構成圖。 第10圖係第9圖所示的跳脫機構的放大圖。 第11圖係跳脫槓桿從第9圖所示的狀態轉動之後的跳脫機構的放大圖。 第12圖係顯示實施形態1之斷路器到達投入完成位置的狀態之構成圖。 第13圖係第12圖所示的跳脫機構的放大圖。 第14圖係顯示實施形態1中的電流減低部及控制開關的構成例之圖。 第15圖係顯示實施形態1中的電流減低部及控制開關的構成例之圖。 第16圖係顯示實施形態1中的電流減低部及控制開關的構成例之圖。 第17圖係顯示實施形態1中的鐵心棒的移動位置與作用於電磁螺線管的負荷量的關係之圖。 第18圖係顯示MCR機構的構成例之圖。 第19圖係顯示MCR機構的構成例之圖。 第20圖係顯示本發明的實施形態2之包含驅動電路的斷路器的電路的構成例之圖。 第21圖係用來說明實施形態2之斷路器的MCR機能之時序圖。FIG. 1 is a cross-sectional view showing a configuration example of a circuit breaker according to Embodiment 1 of the present invention. Figure 2 is an enlarged view of the trip mechanism shown in Figure 1. Fig. 3 is a diagram showing a configuration example of a circuit including a circuit breaker of a driving circuit according to the first embodiment. FIG. 4 is a diagram showing an example of a specific configuration of the drive circuit of the first embodiment. Fig. 5 is a configuration diagram showing the opened state of the circuit breaker in the first embodiment. Figure 6 is an enlarged view of the trip mechanism shown in Figure 5. FIG. 7 is a configuration diagram showing the state at the moment when the contacts of the circuit breaker of the first embodiment start to contact. Figure 8 is an enlarged view of the trip mechanism shown in Figure 7. Fig. 9 is a configuration diagram showing a state where the circuit breaker of the first embodiment reaches the maximum input position. Figure 10 is an enlarged view of the trip mechanism shown in Figure 9. Fig. 11 is an enlarged view of the trip mechanism after the trip lever is rotated from the state shown in Fig. 9. Fig. 12 is a configuration diagram showing a state where the circuit breaker of the first embodiment reaches the input completion position. Figure 13 is an enlarged view of the trip mechanism shown in Figure 12. Fig. 14 is a diagram showing a configuration example of a current reduction unit and a control switch in the first embodiment. Fig. 15 is a diagram showing a configuration example of a current reduction unit and a control switch in the first embodiment. Fig. 16 is a diagram showing a configuration example of the current reduction unit and the control switch in the first embodiment. Fig. 17 is a diagram showing the relationship between the moving position of the iron core rod and the load acting on the electromagnetic solenoid in the first embodiment. Figure 18 is a diagram showing an example of the structure of an MCR mechanism. Figure 19 is a diagram showing an example of the structure of an MCR mechanism. FIG. 20 is a diagram showing an example of the circuit configuration of a circuit breaker including a drive circuit according to Embodiment 2 of the present invention. Fig. 21 is a timing chart for explaining the MCR function of the circuit breaker in the second embodiment.

10:固定接點 10: fixed contact

11:可動接點 11: movable contact

22:投入用線圈 22: Input coil

70、78:驅動電路 70, 78: drive circuit

71:內部ON開關 71: Internal ON switch

72:外部ON開關 72: External ON switch

73:控制電源 73: Control power

74:內部OFF開關 74: Internal OFF switch

75:跳脫附屬裝置 75: Tripping attachment

76:檢測部 76: Inspection Department

77:跳脫用線圈 77: Trip coil

80:整流電路 80: rectifier circuit

81:定電壓電路 81: Constant voltage circuit

83:控制電路 83: control circuit

84:控制開關 84: control switch

85:串聯體 85: Tandem

86:二極體 86: Diode

87:電流減低部 87: Current reduction section

88:微動開關 88: Micro switch

91、95:邏輯或電路 91, 95: logical OR circuit

92:閂鎖電路 92: Latch circuit

93:邏輯與電路 93: logic and circuit

94:邏輯非電路 94: logical NOT circuit

97:變流器 97: converter

98:跳脫繼電器 98: Trip relay

R1、R2、R3、R4:電阻 R1, R2, R3, R4: resistance

T1、T2、T3、T4、T5、T6:端子 T1, T2, T3, T4, T5, T6: terminals

Claims (7)

一種斷路器，係具備： 殼體； 固定端子，係安裝有固定接點且固定於前述殼體； 可動子，係安裝有與前述固定接點相向的可動接點； 電磁螺線管，係具有直線狀地移動的心棒； 傳動機構，係使前述可動子隨著前述心棒的移動而移動，從前述可動接點與前述固定接點分開的斷開狀態變化為前述可動接點與前述固定接點接觸而通電的投入狀態；以及 驅動電路，係對前述電磁螺線管的線圈通電而驅動前述電磁螺線管； 前述驅動電路係具備二極體與減低流到前述二極體的電流之電流減低部兩者的串聯體，前述串聯體係與前述電磁螺線管的線圈並聯連接。A circuit breaker with: case; The fixed terminal is installed with fixed contacts and fixed to the aforementioned housing; The movable element is installed with a movable contact opposite to the fixed contact; An electromagnetic solenoid with a heart rod that moves linearly; The transmission mechanism causes the movable element to move along with the movement of the mandrel, and changes from the disconnected state where the movable contact and the fixed contact are separated to the powered-on state where the movable contact and the fixed contact come into contact with electricity; as well as A drive circuit that energizes the coil of the electromagnetic solenoid to drive the electromagnetic solenoid; The driving circuit includes a series body of a diode and a current reducing part that reduces the current flowing to the diode, and the series system is connected in parallel with the coil of the electromagnetic solenoid. 如申請專利範圍第1項所述之斷路器，其中， 前述電流減低部係包含電阻，或包含電阻及電容器。The circuit breaker as described in item 1 of the patent application scope, in which The aforementioned current reduction unit includes a resistor, or includes a resistor and a capacitor. 如申請專利範圍第1或2項所述之斷路器，係具備： 檢測部，係檢測藉由前述固定接點與前述可動接點之接觸而成為導通狀態之電路的過電流或漏電，並輸出表示檢測的結果之檢測訊號； 前述驅動電路係根據前述檢測部所輸出的檢測訊號，停止對於前述線圈之通電。The circuit breaker as described in item 1 or 2 of the scope of patent application shall have: The detection part detects the overcurrent or leakage of the circuit that is turned on by the contact between the fixed contact and the movable contact, and outputs a detection signal indicating the detection result; The drive circuit stops the energization of the coil based on the detection signal output by the detection unit. 如申請專利範圍第1或2項所述之斷路器，係具備： 跳脫機構，係可與前述傳動機構卡合而進行前述投入狀態的保持，且可解除與前述傳動機構之卡合而解除前述投入狀態的保持； 前述傳動機構係具備： 槓桿，係隨著前述心棒的移動而以固定於前述殼體之第一軸心為中心轉動； 絕緣桿，其一端部可轉動地連結於前述槓桿的一端部，另一端部可轉動地連結於前述可動子；以及 卡合部，係安裝於前述槓桿的另一端部； 前述跳脫機構係具備： 跳脫槓桿，係以朝前述卡合部的方向被彈壓之狀態可轉動地安裝於前述殼體，在從前述斷開狀態變為前述投入狀態之投入過程中，維持與前述卡合部接觸的狀態，且在前述投入狀態下與前述卡合部卡合，限制前述槓桿繞前述第一軸心的轉動；以及 跳脫棒，係進行前述跳脫槓桿的轉動的限制及前述限制的解除。The circuit breaker as described in item 1 or 2 of the scope of patent application includes: The tripping mechanism can be engaged with the transmission mechanism to maintain the input state, and can release the engagement with the transmission mechanism to release the retention of the input state; The aforementioned transmission mechanism is equipped with: The lever rotates around the first axis fixed to the housing as the core rod moves; An insulating rod, one end of which is rotatably connected to one end of the lever, and the other end is rotatably connected to the mover; and The engaging portion is installed at the other end of the aforementioned lever; The aforementioned tripping mechanism is equipped with: The trip lever is rotatably attached to the housing in a state of being urged toward the engaging portion, and maintains contact with the engaging portion during the input process from the disconnected state to the input state State, and is engaged with the engaging portion in the input state to restrict the rotation of the lever about the first axis; and The trip bar performs the restriction of the rotation of the trip lever and the release of the restriction. 如申請專利範圍第4項所述之斷路器，其中， 前述跳脫槓桿係具備： 圓弧部，係具有以前述第一軸心為中心的圓弧形狀，在前述投入過程中供前述卡合部可移動地接觸；以及 凹部，係在前述投入狀態與前述卡合部卡合。The circuit breaker as described in item 4 of the patent application scope, in which The aforementioned trip lever is equipped with: The arc portion has an arc shape centered on the first axis, and the engaging portion is movably contacted during the insertion process; and The concave portion is engaged with the engaging portion in the input state. 如申請專利範圍第5項所述之斷路器，其中， 前述跳脫棒係具備：形成有圓弧部分及平坦部分，且以固定於前述殼體之第二軸心為中心而轉動之半圓部； 前述跳脫槓桿係在前述斷開狀態與前述半圓部的前述平坦部分接觸而限制轉動，且在前述投入狀態與前述半圓部的前述圓弧部分接觸而限制轉動。The circuit breaker as described in item 5 of the patent application scope, in which The tripping bar includes: a semicircular portion formed with an arc portion and a flat portion, and rotating around the second axis fixed to the casing; The trip lever is in contact with the flat portion of the semicircular portion in the off state to restrict rotation, and is in contact with the arc portion of the semicircular portion in the throwing state to restrict rotation. 如申請專利範圍第1或2項所述之斷路器，係具備： 跳脫繼電器，係在藉由前述固定接點與前述可動接點之接觸而成為導通狀態之電路發生過電流或漏電時，輸出跳脫指令； 前述驅動電路係具備： 第一控制電路，在ON開關受到ON操作時，輸出用來驅動前述電磁螺線管之ON訊號，且根據與前述電磁螺線管的心棒成為投入狀態之動作連動之微動開關所輸出的訊號使前述ON訊號的輸出停止；以及 第二控制電路，在從前述第一控制電路輸出前述ON訊號的期間，使來自前述跳脫繼電器的前述跳脫指令可輸出。The circuit breaker as described in item 1 or 2 of the scope of patent application shall have: The trip relay is to output a trip command when an overcurrent or leakage occurs in the circuit that is in the conductive state by the contact between the fixed contact and the movable contact; The aforementioned drive circuit is provided with: The first control circuit outputs an ON signal for driving the electromagnetic solenoid when the ON switch is turned on, and according to the signal output by the micro switch that is linked to the action of the electromagnetic solenoid's heart rod being in the on state The output of the aforementioned ON signal stops; and The second control circuit enables the trip command from the trip relay to be output while the ON signal is output from the first control circuit.
TW108125534A 2018-07-31 2019-07-19 Circuit breaker TWI709990B (en)

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Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
JPH0676702A (en) * 1992-08-25 1994-03-18 Mitsubishi Electric Corp Circuit breaker
JPH07130254A (en) * 1993-11-04 1995-05-19 Energy Support Corp Automatic switch
JP3641734B2 (en) * 1997-07-18 2005-04-27 三菱電機株式会社 Switchgear
JP2002216594A (en) * 2001-01-19 2002-08-02 Hitachi Ltd Operation mechanism for switch device
TWI278885B (en) * 2002-10-30 2007-04-11 Hitachi Ltd Solenoid-operated device, solenoid-operated switch device and electromagnet control device
JP4492610B2 (en) * 2006-12-28 2010-06-30 株式会社日立製作所 Circuit breaker and its switching method
JP5215268B2 (en) * 2009-09-04 2013-06-19 三菱電機株式会社 Breaker
JP6009340B2 (en) * 2012-12-12 2016-10-19 三菱電機株式会社 Circuit breaker and electromagnetic trip device
JP6033107B2 (en) * 2013-02-13 2016-11-30 三菱電機株式会社 Circuit breaker
WO2015098142A1 (en) * 2013-12-26 2015-07-02 三菱電機株式会社 Bypass switch
JP6218675B2 (en) * 2014-05-29 2017-10-25 三菱電機株式会社 Circuit breaker
JP6231445B2 (en) * 2014-07-02 2017-11-15 株式会社日立産機システム Commutation type DC circuit breaker and monitoring method thereof
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