JP2007335081A

JP2007335081A - Vacuum breaker

Info

Publication number: JP2007335081A
Application number: JP2006161721A
Authority: JP
Inventors: Shinichi Miki; 真一三木; Toshie Takeuchi; 敏恵竹内; Mitsuru Tsukima; 満月間
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2006-06-12
Filing date: 2006-06-12
Publication date: 2007-12-27

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum breaker which generates an electromagnetic force by utilizing effectively electric current flowing in a vacuum switch tube, enabling down-sizing of a wipe device and an operating mechanism. <P>SOLUTION: The vacuum breaker is provided with a vacuum switch tube 11 which houses a fixed side contact 1 and a movable side contact 3 that contacts and is separated from the fixed side contact 1, a wipe device 15 which is installed between the vacuum switch tube 11 and an operating mechanism SA that operates contact and separation operation of the movable side contact 3 and gives a depressing force to the movable side contact 3 in the direction of the fixed side contact 1, a movable side conductor 16 of which one end 16a is connected to a movable side electrode rod 4 at the outside of the vacuum switch tube 11 and is drawn out to the contact and separation direction of the movable side contact 3 orthogonally, and an extraction conductor 19 which is arranged at a fixed portion consisting of a frame FR on the vacuum switch tube 11 side in parallel with the movable side conductor 16 and of which one end 19b is connected to the outside circuit. Flexible conductors 17, 18 to connect the other end 16b of the movable side conductor 16 and the other end 19b of the extraction conductor 19 are installed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、真空遮断器、特に、固定側接点と可動側接点の接触面を対向させて絶縁筒内に配置され、絶縁筒内部が真空に保持された真空スイッチ管により電気回路を入切する真空遮断器に関するものである。 The present invention relates to a vacuum circuit breaker, and in particular, an electric circuit is turned on and off by a vacuum switch tube that is arranged in an insulating cylinder with the contact surfaces of a fixed side contact and a movable side contact facing each other, and the inside of the insulating cylinder is held in vacuum. It relates to a vacuum circuit breaker.

真空遮断器に使用される真空スイッチ管は、固定側端板および可動側端板が円筒状の絶縁容器の両端に前記絶縁容器を閉塞するように気密に取り付けられ、内部が真空に保持される真空容器と、固定側接点が軸方向の一端に取り付けられ、軸方向の他端を前記真空容器から突出させて前記固定側端板に気密に取り付けられた固定側電極棒と、可動側接点が軸方向の他端に取り付けられ、この可動側接点を前記固定側接点に対向させ、かつ上位固定側電極棒と同軸に配置され、軸方向の一端を前記真空容器から突出させてベローズを介して前記可動側端板に気密に取り付けられ、この可動側接点を接離させる可動側電極棒とを備えている。
このように構成された真空スイッチ管に大電流が流れると固定側接点と可動側接点の接触面が開く方向に大きな電磁反発力が働き、電磁反発力が接触面の接触圧力よりも大きくなると、接点が開いてアークが発生する。アーク発生後、接点が溶融した状態で閉極し、溶融部が冷えると接点が溶着する。
真空遮断器では、大電流通電時に接触面が開くことを防止するため、接触圧力が与えられるように、真空スイッチ管と、固定側接点と可動側接点の接離動作を操作する操作機構との間にワイプ装置が設けられている。
遮断電流の大きな真空遮断器においては、前記の電磁反発力に抗して必要な接触圧力が与えられるように大きなワイプ圧力のワイプ装置が必要であり、ワイプ装置および操作機構が大きくなるという問題がある。 The vacuum switch tube used in the vacuum circuit breaker is airtightly attached so that the fixed side end plate and the movable side end plate close the insulating container at both ends of the cylindrical insulating container, and the inside is kept in vacuum. A vacuum vessel, a fixed contact point is attached to one end in the axial direction, a fixed side electrode rod that is airtightly attached to the fixed side end plate with the other end in the axial direction protruding from the vacuum vessel, and a movable contact point It is attached to the other end in the axial direction, this movable side contact is opposed to the fixed side contact, and is arranged coaxially with the upper fixed side electrode rod, and one end in the axial direction is projected from the vacuum vessel via the bellows. The movable side electrode plate is hermetically attached to the movable side end plate, and includes a movable side electrode rod that contacts and separates the movable side contact.
When a large current flows through the vacuum switch tube configured in this way, a large electromagnetic repulsive force works in the direction in which the contact surface of the fixed contact and the movable contact opens, and when the electromagnetic repulsive force becomes larger than the contact pressure of the contact surface, The contact opens and an arc is generated. After the arc is generated, the contact is closed in a molten state, and the contact is welded when the melted portion is cooled.
In the vacuum circuit breaker, in order to prevent the contact surface from opening when energizing a large current, a vacuum switch tube and an operation mechanism that operates the contact / separation operation of the fixed contact and the movable contact so that contact pressure is applied. A wiping device is provided between them.
In a vacuum circuit breaker with a large breaking current, a wipe device with a large wipe pressure is required so that a necessary contact pressure is provided against the electromagnetic repulsion force, and the wipe device and the operation mechanism become large. is there.

この問題を解決する手段として、従来技術では、可動電極に接続された主回路端子部分を、主回路端子と平行な位置に導体を配置して、この導体を経由して可動電極に接続し、真空スイッチ管の閉極時に流れる電流により、主回路端子と導体との間に生じる電磁力が可動電極を押し付ける押付力となり、この押付力とワイプ装置のワイプ圧力との合力が接触圧力として働く構成としたことによって、ワイプ装置および操作機構の小型化を可能にする構成が開示されている（例えば、特許文献１参照）。
その構成は、可動電極の端部に真空スイッチ管の接離方向に対して直角方向に所定の長さの導体を取り付け、この導体に対して真空スイッチ側に間隔Ｄを確保した平行位置に可動側の主回路端子を真空スイッチ管とは独立して絶縁支持した状態で配置し、導体の両端位置で、導体の両側部と可動側の主回路端子の両側部とを可とう導体で並列接続した構成である。
この構成では、電流が導体と可動側の主回路端子に分流し、導体と可動側の主回路端子には同じ方向に電流が流れるため、導体と可動側の主回路端子の間に吸引力が働く。可動側の主回路端子が真空スイッチ管とは独立して絶縁支持されているので、導体によって可動電極の接離方向に押付力が与えられ、この押付力とワイプ装置のワイプ圧力の合力が接触圧力となり、ワイプ装置のワイプ圧力は、接触部に必要な接触圧力から前記導体による押付力を差し引いた値に設定してもよくなり、ワイプ装置および操作機構の小型化を可能にするものである。 As a means for solving this problem, in the prior art, the main circuit terminal portion connected to the movable electrode is arranged with a conductor in a position parallel to the main circuit terminal, and connected to the movable electrode via this conductor, Electromagnetic force generated between the main circuit terminal and the conductor due to the current that flows when the vacuum switch tube is closed becomes the pressing force that presses the movable electrode, and the resultant force of the pressing force and the wiper pressure of the wiper works as the contact pressure. Therefore, a configuration that enables downsizing of the wiping device and the operation mechanism is disclosed (for example, see Patent Document 1).
The structure is such that a conductor having a predetermined length is attached to the end of the movable electrode in a direction perpendicular to the contact / separation direction of the vacuum switch tube, and the conductor is movable to a parallel position with a distance D on the vacuum switch side. The main circuit terminal on the side is insulated and supported independently from the vacuum switch tube, and at both ends of the conductor, both sides of the conductor and both sides of the movable main circuit terminal are connected in parallel with a flexible conductor. This is the configuration.
In this configuration, the current is divided between the conductor and the movable main circuit terminal, and the current flows in the same direction through the conductor and the movable main circuit terminal. Therefore, an attractive force is generated between the conductor and the movable main circuit terminal. work. Since the main circuit terminal on the movable side is insulated and supported independently of the vacuum switch tube, a pressing force is applied by the conductor in the contact / separation direction of the movable electrode, and the resultant force of the pressing force and the wipe pressure of the wiper is in contact. The wiping pressure of the wiping device may be set to a value obtained by subtracting the pressing force by the conductor from the contact pressure necessary for the contact portion, and the wiping device and the operation mechanism can be miniaturized. .

特開昭５７−１３４８２６号公報（２−３頁、図３）JP-A-57-134826 (page 2-3, FIG. 3)

従来技術における特許文献１に示された構成は、真空スイッチ管の可動電極に接続される可動側の主回路端子と、これに並列配置した導体と複数の可とう導体が必要であり、大きな構造体になってしまうばかりでなく、主回路端子とこれに並列配置した導体には、電流が分流するものであって電流による電磁力を有効に利用できないという問題点があった。 The configuration shown in Patent Document 1 in the prior art requires a movable main circuit terminal connected to the movable electrode of the vacuum switch tube, a conductor arranged in parallel therewith, and a plurality of flexible conductors. In addition to becoming a body, the main circuit terminals and the conductors arranged in parallel therewith have a problem that current is shunted and electromagnetic force due to the current cannot be used effectively.

この発明は、前記の問題点を解消するためになされたものであって、真空スイッチ管に流れる電流を有効に利用して簡潔な構成で大きな電磁力を生成しこの電磁力による押付力がワイプ装置のワイプ圧力に加わる構成として、ワイプ装置および操作機構の小型化を可能にする真空遮断器を提供することを目的とする。 The present invention has been made in order to solve the above-described problems, and effectively uses the current flowing in the vacuum switch tube to generate a large electromagnetic force with a simple configuration, and the pressing force by the electromagnetic force is wiped. An object of the present invention is to provide a vacuum circuit breaker that enables downsizing of the wiping device and the operation mechanism as a configuration to be applied to the wiping pressure of the device.

この発明に係る真空遮断器は、固定側接点と前記固定側接点に対して接離する可動側接点とを収容する真空スイッチ管、前記真空スイッチ管と前記可動側接点の接離動作を操作する操作機構との間に設けられ前記可動側接点に対して前記固定側接点の方向に押圧力を付与するワイプ装置、前記可動側接点に接続され前記真空スイッチ管から導出される可動側電極部材、前記真空スイッチ管の外部において前記可動側電極部材に一端を接続され前記可動側接点の接離方向に対して直交方向に引き出された可動側導体、前記可動側導体と平行に前記真空スイッチ管側において固定部位に配設され一端を外部回路と接続する引出導体を備え、前記可動側導体の他端と前記引出導体の他端とを接続する可とう導体を設けたものである。 The vacuum circuit breaker according to the present invention operates a vacuum switch tube that accommodates a fixed-side contact and a movable contact that contacts and separates from the fixed-side contact, and operates a contact / separation operation of the vacuum switch tube and the movable-side contact. A wiping device that is provided between the operating mechanism and applies a pressing force in the direction of the fixed side contact to the movable side contact; a movable side electrode member that is connected to the movable side contact and led out from the vacuum switch tube; One end connected to the movable electrode member outside the vacuum switch tube and drawn in a direction perpendicular to the contact / separation direction of the movable contact, the vacuum switch tube side parallel to the movable conductor And a lead conductor that is connected to an external circuit at one end and is provided with a flexible conductor that connects the other end of the movable conductor and the other end of the lead conductor.

この発明によれば、真空スイッチ管に流れる電流を有効に利用して簡潔な構成で大きな電磁力を生成しこの電磁力による押付力がワイプ装置のワイプ圧力に加わる構成として、ワイプ装置および操作機構の小型化を可能にする真空遮断器を提供することができる。 According to the present invention, the wiper device and the operation mechanism are configured as a configuration in which a large electromagnetic force is generated with a simple configuration by effectively using the current flowing through the vacuum switch tube and the pressing force by the electromagnetic force is applied to the wipe pressure of the wiper device. It is possible to provide a vacuum circuit breaker that enables downsizing.

実施の形態１．
この発明による実施の形態１を図１から図３までについて説明する。図１は実施の形態１に係る真空スイッチ管の断面図、図２は実施の形態１に係る真空遮断器の正面図、図３は実施の形態１に係る真空遮断器の側面図である。 Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. 1 is a cross-sectional view of a vacuum switch tube according to the first embodiment, FIG. 2 is a front view of the vacuum circuit breaker according to the first embodiment, and FIG. 3 is a side view of the vacuum circuit breaker according to the first embodiment.

この実施の形態１では、図１から図３までに示すように、固定側接点１、固定側電極棒２、可動側接点３、可動側電極棒４、固定側端板５、絶縁筒６、可動側端板７、ベローズ８、ベローズカバー９および絶縁物製摺動ガイド１０とで構成された真空スイッチ管１１の固定側接点１と可動側接点３との間に、可動側主回路導体１６と引出導体１９を流れる電流による電磁力が可動側接点３の接離動作方向の押付力となり、この押付力とワイプ装置１５のワイプ圧力の合力が可動側接点３の固定側接点１に対する接触圧力として働くように構成したものである（以下、可動側主回路導体１６と引出導体１９との間に働く電磁力により可動側接点３を固定側接点１へ押圧する力を押付力と呼称し、ワイプ装置１５により可動側接点３を固定側接点１へ押圧する力をワイプ圧力と呼称する）。 In the first embodiment, as shown in FIGS. 1 to 3, the fixed side contact 1, the fixed side electrode rod 2, the movable side contact 3, the movable side electrode rod 4, the fixed side end plate 5, the insulating cylinder 6, A movable main circuit conductor 16 is disposed between the fixed contact 1 and the movable contact 3 of the vacuum switch tube 11 composed of the movable end plate 7, bellows 8, bellows cover 9, and insulating sliding guide 10. The electromagnetic force generated by the current flowing through the lead conductor 19 becomes a pressing force in the direction of contact / separation operation of the movable contact 3, and the resultant force of the pressing force and the wipe pressure of the wiping device 15 is the contact pressure of the movable contact 3 with respect to the fixed contact 1. (Hereinafter, the force that presses the movable contact 3 to the fixed contact 1 by the electromagnetic force acting between the movable main circuit conductor 16 and the lead conductor 19 is referred to as a pressing force. The movable contact 3 is fixed to the fixed contact by the wiper 15. The force of pressing is referred to as a wipe pressure to).

図１から図３までにおいて、真空スイッチ管１１は、固定側接点１と可動側接点３を対向させて、絶縁筒６と固定側端板５および可動側端板７で構成される真空容器の内部に配置している。固定側接点１は絶縁筒６の一端側に固着された固定側端板５に貫通する固定側電極棒２の内側端部に装着されている。可動側接点３を真空スイッチ管１１の内部に配設した内側端部に装着した可動側電極棒４にベローズカバー９を介してベローズ８の一端部が取り付けられ、ベローズ８の他端部は絶縁筒６の他端側に固着された可動側端板７に固着されている。可動側電極棒４は可動側端板７の部位にて可動側電極棒４を絶縁物製摺動ガイド１０に挿通し、可動側電極棒４が往復動作するように配置されている。固定側電極棒２には固定側主回路導体２０が取り付けられている。可動側電極棒４には可動側接点３に接触圧力を与えるワイプ装置１５を介して可動側接点３を接離動作させる操作機構ＳＡが接続されている。 1 to 3, the vacuum switch tube 11 is a vacuum container composed of an insulating cylinder 6, a fixed side end plate 5 and a movable side end plate 7 with the fixed side contact 1 and the movable side contact 3 facing each other. Arranged inside. The fixed-side contact 1 is attached to the inner end of the fixed-side electrode rod 2 that penetrates the fixed-side end plate 5 fixed to one end of the insulating cylinder 6. One end of a bellows 8 is attached to a movable electrode 4 having a movable contact 3 attached to an inner end disposed inside the vacuum switch tube 11 via a bellows cover 9, and the other end of the bellows 8 is insulated. It is fixed to a movable side end plate 7 fixed to the other end side of the cylinder 6. The movable electrode rod 4 is disposed so that the movable electrode rod 4 reciprocates at the position of the movable end plate 7 by inserting the movable electrode rod 4 through an insulating sliding guide 10. A fixed main circuit conductor 20 is attached to the fixed electrode 2. An operation mechanism SA for moving the movable contact 3 to contact / separate is connected to the movable electrode 4 via a wiping device 15 that applies contact pressure to the movable contact 3.

ワイプ装置１５は、ケース１４にワイプばね１３を収容している。真空遮断器の閉路動作時にケース１４が操作機構ＳＡによって図示上方に駆動されると可動側電極棒４を接離動作させる操作棒１２にワイプばね１３の押圧力が加わり、操作機構ＳＡが操作棒１２をさらに押圧すると可動側接点３が固定側接点１に接触し、さらに操作機構ＳＡによる押圧動作が継続されるとワイプばね１３が圧縮され、そのばね圧力により操作棒１２を介して可動側接点３を固定側接点１へ向けて押圧し、固定側接点１と可動側接点３との接触部に接触圧力を加えることができる。 The wipe device 15 accommodates a wipe spring 13 in a case 14. When the case 14 is driven upward in the figure by the operating mechanism SA during the closing operation of the vacuum circuit breaker, the pressing force of the wipe spring 13 is applied to the operating rod 12 that moves the movable electrode rod 4 in and out, and the operating mechanism SA is operated by the operating rod. When the pressure 12 is further pressed, the movable contact 3 comes into contact with the fixed contact 1, and when the pressing operation by the operation mechanism SA is continued, the wipe spring 13 is compressed, and the spring pressure compresses the movable contact via the operation rod 12. 3 is pressed toward the fixed contact 1 to apply a contact pressure to the contact portion between the fixed contact 1 and the movable contact 3.

図３に示すように、真空スイッチ管１１の下端面を気密に貫通して下方突出状態で導出された可動側電極棒４の外側端部４ａには可動側接点３の接離方向に対して直交方向に引き出される可動側主回路導体１６が配置されて可動側主回路導体１６の一端１６ａが可動側電極棒４の下方端部４ａに電気的に接続され、可動側主回路導体１６の他端１６ｂには可とう導体１７，１８の一端１７ａ，１８ａが接続されている。可動側主回路導体１６と平行状態で対向し真空スイッチ管１１側に配設された引出導体１９は、可動側電極棒４と可動側主回路導体１６とは独立して、真空スイッチ管１１を固定するための真空遮断器の絶縁物製フレームＦＲに固定され、一端１９ａは外部接続されて、可動側電極棒４に近い他端１９ｂには可とう導体１７，１８の他端１７ｂ，１８ｂが接続される。可とう導体１７，１８は編素線や薄い導体を重ねたものが適当である。 As shown in FIG. 3, the outer end 4 a of the movable electrode 4, which is airtightly penetrated through the lower end surface of the vacuum switch tube 11 and led out in a downward projecting state, is connected to the contact / separation direction of the movable contact 3. A movable main circuit conductor 16 drawn in an orthogonal direction is arranged, and one end 16a of the movable side main circuit conductor 16 is electrically connected to the lower end portion 4a of the movable side electrode rod 4. One ends 17a and 18a of flexible conductors 17 and 18 are connected to the end 16b. The lead conductor 19 arranged in parallel with the movable side main circuit conductor 16 and disposed on the vacuum switch tube 11 side is connected to the vacuum switch tube 11 independently of the movable side electrode rod 4 and the movable side main circuit conductor 16. It is fixed to an insulator frame FR of a vacuum circuit breaker for fixing, one end 19a is externally connected, and the other end 19b close to the movable electrode rod 4 is connected to the other ends 17b and 18b of the flexible conductors 17 and 18. Connected. The flexible conductors 17 and 18 are suitably made by superimposing braided wires or thin conductors.

真空スイッチ管１１を流れる電流は、固定側主回路導体２０から固定側電極棒２、固定側接点１、可動側接点３、可動側電極棒４を通る。可動側電極棒４の外側端部４ａから可動側主回路導体１６を通り、可とう導体１７，１８に分流し、引出導体１９に至る経路を流れる。
可動側主回路導体１６と引出導体１９の対向部分は、電流が同じ方向に流れるため、吸引電磁力が発生する。この吸引電磁力は可動側接点３を固定側接点１への接合方向に押し付ける押付力となり、この押付力とワイプ装置１５によるワイプ圧力の合力が接触圧力となる。したがって、ワイプ装置１５のワイプ圧力は、所要の接触圧力から押付力を差し引いた値でよくなり、ワイプ機構１５および操作機構の小型化が可能となる。 The current flowing through the vacuum switch tube 11 passes from the fixed-side main circuit conductor 20 through the fixed-side electrode rod 2, the fixed-side contact 1, the movable-side contact 3, and the movable-side electrode rod 4. From the outer end 4 a of the movable electrode rod 4, it passes through the movable main circuit conductor 16, is divided into the flexible conductors 17 and 18, and flows along the path to the lead conductor 19.
Since the current flows in the same direction in the opposing portion of the movable main circuit conductor 16 and the lead conductor 19, an attracting electromagnetic force is generated. This attraction electromagnetic force becomes a pressing force that presses the movable contact 3 in the joining direction to the fixed contact 1, and the resultant force of the pressing force and the wipe pressure by the wiping device 15 becomes the contact pressure. Accordingly, the wiping pressure of the wiping device 15 may be a value obtained by subtracting the pressing force from the required contact pressure, and the wiping mechanism 15 and the operation mechanism can be downsized.

図２および図３に示す可動側主回路導体１６と引出導体１９との間に働く電磁力は、可動側主回路導体１６と引出導体１９の距離、可動側主回路導体１６と引出導体１９の電流の流れる方向の両導体の対抗部の距離、可動側主回路導体１６と引出導体１９を流れるそれぞれの電流の積に依存する。この発明によれば、可動側電極棒４、可動側主回路導体１６および引出導体１９を流れる電流が等しくなる。従来技術における特許文献１に示された構成では、吸引電磁力を発生させる可動側主回路端子１６に相当する導体と引出導体１９に相当する導体を流れるそれぞれの電流は、可動電極３を流れる電流を分流したものであったが、この発明によれば、可動側主回路導体１６と引出導体１９には、可動側電極棒４を流れる電流と同一の電流が流れるため、従来における特許文献１に示された構成と吸引電磁力を発生させる部分の導体寸法、配置を同一にした場合、大きな吸引電磁力を発生させることができる。このため、従来の特許文献１に示された構成よりも小さな構成で同一の吸引電磁力を得ることができ、ワイプ装置１５および操作機構ＳＡの小型化を可能にする真空遮断器を構成できる。 The electromagnetic force acting between the movable side main circuit conductor 16 and the lead conductor 19 shown in FIGS. 2 and 3 is the distance between the movable side main circuit conductor 16 and the lead conductor 19, and the distance between the movable side main circuit conductor 16 and the lead conductor 19. It depends on the distance between the opposing portions of the two conductors in the direction of current flow and the product of the respective currents flowing through the movable main circuit conductor 16 and the lead conductor 19. According to the present invention, the currents flowing through the movable electrode rod 4, the movable main circuit conductor 16, and the lead conductor 19 are equal. In the configuration shown in Patent Document 1 in the prior art, each of the currents flowing through the conductor corresponding to the movable main circuit terminal 16 that generates the attractive electromagnetic force and the conductor corresponding to the lead conductor 19 is the current flowing through the movable electrode 3. However, according to the present invention, since the same current as the current flowing through the movable electrode bar 4 flows through the movable main circuit conductor 16 and the lead conductor 19, the conventional patent document 1 discloses that When the conductor dimensions and arrangement of the portion that generates the attracting electromagnetic force are the same as the configuration shown, a large attracting electromagnetic force can be generated. For this reason, the same attraction electromagnetic force can be obtained with a configuration smaller than the configuration shown in the conventional Patent Document 1, and a vacuum circuit breaker that enables downsizing of the wiping device 15 and the operation mechanism SA can be configured.

このように、可動側主回路導体１６と引出導体１９とには、真空スイッチ管１１を流れる電流の全部が可動側主回路導体１６と引出導体１９とで同じ電流として直列的に流れるので真空スイッチ管１１を流れる電流を電磁力の生成に有効に利用できる。
従来技術では、可動側主回路導体１６に相当する導体と引出導体１９に相当する導体とは並列接続され電流は可動側主回路導体１６に相当する導体と引出導体１９に相当する導体に分流して半減し、この分流電流による電磁力は半減するが、この発明によれば可動側主回路導体１６と引出導体１９とで同じ電流が流れ真空スイッチ管１１を流れる電流を電磁力の生成に有効に利用できるのである。 Thus, since all of the current flowing through the vacuum switch tube 11 flows in series as the same current in the movable side main circuit conductor 16 and the lead conductor 19 in the movable side main circuit conductor 16 and the lead conductor 19, the vacuum switch The current flowing through the tube 11 can be effectively used for generating electromagnetic force.
In the prior art, the conductor corresponding to the movable side main circuit conductor 16 and the conductor corresponding to the lead conductor 19 are connected in parallel, and the current is divided into the conductor corresponding to the movable side main circuit conductor 16 and the conductor corresponding to the lead conductor 19. However, according to the present invention, the same current flows between the movable main circuit conductor 16 and the lead conductor 19 and the current flowing through the vacuum switch tube 11 is effective for generating electromagnetic force. It can be used.

そして、この発明による実施の形態１では、複数の可とう導体１７，１８はそれぞれが可動側電極棒４を挟んで可動側電極棒４の両側に配設された状態で並設され、複数の可とう導体１７，１８がそれぞれ真空スイッチ管１１の固定側接点１および可動側接点３を流れる電流を分担するようにしているので、各可とう導体１７，１８の構成を単一の可とう導体を用いる場合に比べて小さくすることができ、真空スイッチ管１１と絶縁物製フレームＦＲとの距離を縮小できて、真空スイッチ管１１の中心軸と絶縁物製フレームＦＲとの径方向の距離を全周にわたってほぼ均等にできるため、真空遮断器の小型化をさらに推進できる。 In Embodiment 1 according to the present invention, the plurality of flexible conductors 17 and 18 are juxtaposed in a state where each of the flexible conductors 17 and 18 is disposed on both sides of the movable electrode rod 4 with the movable electrode rod 4 interposed therebetween. Since the flexible conductors 17 and 18 share the current flowing through the fixed side contact 1 and the movable side contact 3 of the vacuum switch tube 11, respectively, the configuration of each of the flexible conductors 17 and 18 is a single flexible conductor. The distance between the vacuum switch tube 11 and the insulator frame FR can be reduced, and the radial distance between the central axis of the vacuum switch tube 11 and the insulator frame FR can be reduced. Since it can be made almost uniform over the entire circumference, the vacuum circuit breaker can be further reduced in size.

図２および図３に示す構成では、引出導体１９を真空スイッチ管１１の摺動ガイド１０と可動側主回路導体１６の間に配置しているが、絶縁筒６や可動側端板７の側面に配置してもよい。 2 and 3, the lead conductor 19 is disposed between the sliding guide 10 of the vacuum switch tube 11 and the movable main circuit conductor 16, but the side surfaces of the insulating cylinder 6 and the movable end plate 7 are arranged. You may arrange in.

（１Ａ）この発明による実施の形態１によれば、固定側接点１と前記固定側接点１に対して接離する可動側接点３とを収容する真空スイッチ管１１、前記真空スイッチ管１１と前記可動側接点３の接離動作を操作する操作機構ＳＡとの間に設けられ前記可動側接点３に対して前記固定側接点１の方向に押圧力を付与するワイプ装置１５、前記可動側接点３に接続され前記真空スイッチ管１１から端部４ａを導出される可動側電極棒４からなる可動側電極部材、前記真空スイッチ管１１の外部において前記可動側電極棒４からなる可動側電極部材の端部４ａに一端１６ａを接続され前記可動側接点３の接離方向に対して直交方向に引き出された可動側主回路導体１６からなる可動側導体、前記可動側主回路導体１６からなる可動側導体と平行に前記真空スイッチ管１１側において絶縁物製フレームＦＲからなる固定部位に配設され一端１９ａを外部回路と接続する引出導体１９を備え、前記可動側主回路導体１６からなる可動側導体の他端１６ｂと前記引出導体１９の他端１９ｂとを接続する可とう導体１７，１８を設けたので、前記真空スイッチ管１１の前記固定側接点１および前記可動側接点３に流れる電流を有効に利用して簡潔な構成で大きな電磁力を生成しこの電磁力による押付力がワイプ装置１５のワイプ圧力に加わる構成として、ワイプ装置および操作機構の小型化を可能にする真空遮断器を提供することができる。
すなわち、固定側接点１と、前記固定側接点１に対して接離する可動側接点３を有し、前記固定側接点１および可動側接点３が真空状態に保持された絶縁筒６内に収容された真空スイッチ管１１と、前記可動側接点３の接離動作を操作する操作機構ＳＡと、前記真空スイッチ管１と前記操作機構ＳＡの間に配置され、前記可動側接点３に対して前記固定側接点１の方向に押圧力を付与するワイプ装置１５と、前記可動側接点３に接続された可動側電極棒４の端部４ａから前記可動側接点３の接離方向に対して直交方向に引き出された可動側主回路導体１６と、前記可動側主回路導体１６と平行に前記真空スイッチ管１１側に配置され、前記可動側電極棒４と前記可動側主回路導体１６とは独立して絶縁物製フレームＦＲに固定され、前記可動側主回路導体１６と対向する部分を有し、前記可動側電極棒４から離れた一端１９ａにて外部回路と接続する引出導体１９と、前記可動側主回路導体１６の前記可動側電極棒４と接続しない一端１６ｂと前記引出導体１９の外部回路と接続しない一端１９ｂとを接続する可とう導体１７，１８を備えたことを特徴とする真空遮断器が構成されている。
この構成により、真空遮断器の通電時、可動側主回路導体１６と引出導体１９に電流が流れ、可動側接点３を固定側接点１に押さえ付ける方向に電磁力が働くため、ワイプ装置１５による押圧力を軽減でき、ワイプ装置１５および操作機構ＳＡの小型化が可能となる。 (1A) According to Embodiment 1 of the present invention, the vacuum switch tube 11 that houses the fixed contact 1 and the movable contact 3 that contacts and separates from the fixed contact 1, the vacuum switch tube 11, and the A wiping device 15 provided between the operating mechanism SA for operating the contact / separation operation of the movable contact 3 and applying a pressing force to the movable contact 3 in the direction of the fixed contact 1, the movable contact 3 A movable side electrode member composed of a movable side electrode rod 4 connected to the vacuum switch tube 11 and led out from the end portion 4a from the vacuum switch tube 11, and an end of the movable side electrode member composed of the movable side electrode rod 4 outside the vacuum switch tube 11. A movable side conductor composed of a movable side main circuit conductor 16 connected at one end 16a to the portion 4a and drawn out in a direction orthogonal to the contact / separation direction of the movable side contact 3, and a movable side conductor composed of the movable side main circuit conductor 16 In parallel with The other end 16b of the movable conductor comprising the movable main circuit conductor 16 is provided with a lead conductor 19 disposed on the vacuum switch tube 11 side at a fixed portion made of an insulating frame FR and connecting one end 19a to an external circuit. And the other end 19b of the lead conductor 19 are provided with flexible conductors 17 and 18, so that the current flowing through the fixed-side contact 1 and the movable-side contact 3 of the vacuum switch tube 11 can be used effectively. As a configuration in which a large electromagnetic force is generated with a simple configuration and the pressing force by the electromagnetic force is applied to the wipe pressure of the wipe device 15, a vacuum circuit breaker that enables downsizing of the wipe device and the operation mechanism can be provided.
That is, the fixed side contact 1 and the movable side contact 3 that contacts and separates from the fixed side contact 1 are housed in an insulating cylinder 6 in which the fixed side contact 1 and the movable side contact 3 are held in a vacuum state. The vacuum switch tube 11, the operating mechanism SA for operating the contact / separation operation of the movable contact 3, and the vacuum switch tube 1 and the operating mechanism SA are disposed between the movable switch 3 and the movable contact 3. A wiping device 15 that applies a pressing force in the direction of the stationary contact 1 and a direction orthogonal to the contact / separation direction of the movable contact 3 from the end 4a of the movable electrode rod 4 connected to the movable contact 3 The movable side main circuit conductor 16 drawn out to the side of the vacuum switch tube 11 is disposed in parallel with the movable side main circuit conductor 16, and the movable side electrode rod 4 and the movable side main circuit conductor 16 are independent of each other. Fixed to the insulator frame FR and movable A lead conductor 19 having a portion facing the main circuit conductor 16 and connected to an external circuit at one end 19a away from the movable electrode rod 4, the movable electrode rod 4 of the movable main circuit conductor 16; The vacuum circuit breaker is characterized by comprising flexible conductors 17 and 18 for connecting one end 16b not connected to one end 19b not connected to the external circuit of the lead conductor 19.
With this configuration, when the vacuum circuit breaker is energized, a current flows through the movable side main circuit conductor 16 and the lead conductor 19, and an electromagnetic force acts in a direction to press the movable side contact 3 against the fixed side contact 1. The pressing force can be reduced, and the wiping device 15 and the operation mechanism SA can be downsized.

（１Ｂ）この発明による実施の形態１によれば、前記（１Ａ）項における構成において、前記可動側主回路導体１６からなる可動側導体と前記引出導体１９とを接続する複数の可とう導体１７，１８が設けられていることを特徴とするので、真空スイッチ管１１の固定側接点１および可動側接点３に流れる電流を有効に利用して簡潔な構成で大きな電磁力を生成しこの電磁力による押付力がワイプ装置１５のワイプ圧力に加わる構成として、ワイプ装置１５および操作機構ＳＡの小型化を可能にするとともに、真空遮断器全体の小型化をさらに推進できる真空遮断器を提供することができる。
すなわち、前記可動側主回路導体１６と前記引出導体１９とを接続する可とう導体１７，１８が複数であることを特徴とする前記（１Ａ）項に記載の真空遮断器が構成されている。
この構成により、真空スイッチ管１１の中心軸と絶縁フレームＦＲとの径方向の距離を、全周にわたってほぼ均等にできるため、真空遮断器の小型化がさらに可能となる。 (1B) According to Embodiment 1 of the present invention, a plurality of flexible conductors 17 connecting the movable side conductor made of the movable side main circuit conductor 16 and the lead conductor 19 in the configuration in the above section (1A). , 18 are provided, and a large electromagnetic force is generated with a simple configuration by effectively using the current flowing through the fixed-side contact 1 and the movable-side contact 3 of the vacuum switch tube 11. As a configuration in which the pressing force applied to the wiping pressure of the wiping device 15 is provided, the wiping device 15 and the operation mechanism SA can be miniaturized, and a vacuum circuit breaker that can further promote the miniaturization of the entire vacuum circuit breaker is provided. it can.
That is, the vacuum circuit breaker according to the item (1A) is configured, wherein there are a plurality of flexible conductors 17 and 18 connecting the movable main circuit conductor 16 and the lead conductor 19.
With this configuration, the radial distance between the central axis of the vacuum switch tube 11 and the insulating frame FR can be made substantially uniform over the entire circumference, so the vacuum circuit breaker can be further downsized.

実施の形態２．
この発明による実施の形態２を図４および図５について説明する。図４は実施の形態２に係る真空遮断器の正面図、図５は実施の形態２に係る真空遮断器の側面図である。
この実施の形態２において、ここで説明する特有の構成以外の構成については、先に説明した実施の形態１における構成と同一の構成内容を具備し、同様の作用を奏するものである。図中、同一符号は同一または相当部分を示す。 Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIGS. 4 is a front view of the vacuum circuit breaker according to the second embodiment, and FIG. 5 is a side view of the vacuum circuit breaker according to the second embodiment.
In the second embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in the first embodiment described above, and exhibits the same operation. In the drawings, the same reference numerals indicate the same or corresponding parts.

実施の形態１において、引出導体１９は真空遮断器の絶縁物製フレームＦＲに固定する構成であったが、実施の形態２では、引出導体１９を真空遮断器の絶縁物製フレームＦＲ以外に、真空スイッチ管１１にも固定し、引出導体１９が真空スイッチ管１１によって支持される構造としたものである。この構成では、引出導体１９は、真空スイッチ管１１の金属部分とは絶縁され、真空スイッチ管１１の絶縁物製摺動ガイド１０に支持されている。引出導体１９を真空スイッチ管１１に固定したこと以外は実施の形態１の図２および図３に示す構成と同一である。 In Embodiment 1, the lead conductor 19 is configured to be fixed to the insulator frame FR of the vacuum circuit breaker. However, in Embodiment 2, the lead conductor 19 is not limited to the insulator frame FR of the vacuum circuit breaker. The lead conductor 19 is also fixed to the vacuum switch tube 11 and supported by the vacuum switch tube 11. In this configuration, the lead conductor 19 is insulated from the metal portion of the vacuum switch tube 11 and is supported by the insulating sliding guide 10 of the vacuum switch tube 11. Except that the lead conductor 19 is fixed to the vacuum switch tube 11, the configuration is the same as that shown in FIGS. 2 and 3 of the first embodiment.

このように引出導体１９が真空スイッチ管１１に支持されることにより、引出導体１９と真空バルブ１１の間の隙間がなくなり、実施の形態１における図２および図３に示す構成よりもさらに小型化が可能となる。 Since the lead conductor 19 is supported by the vacuum switch tube 11 in this way, the gap between the lead conductor 19 and the vacuum valve 11 is eliminated, and the size is further reduced as compared with the configuration shown in FIGS. 2 and 3 in the first embodiment. Is possible.

（２Ａ）この発明による実施の形態２によれば、実施の形態１の前記（１Ａ）項または前記（１Ｂ）項における構成において、前記引出導体１９は前記固定側接点１および前記可動側接点３と電気的に絶縁されて真空スイッチ管１１に支持されるようにしたので、真空スイッチ管１１の固定側接点１および可動側接点３に流れる電流を有効に利用して簡潔な構成で大きな電磁力を生成しこの電磁力による押付力がワイプ装置１５のワイプ圧力に加わる構成として、ワイプ装置１５および操作機構ＳＡの小型化を可能にするとともに、引出導体１９を真空スイッチ管１１に固定することによりさらに小形化を推進できる真空遮断器を提供することができる。 (2A) According to the second embodiment of the present invention, in the configuration according to the item (1A) or the item (1B) of the first embodiment, the lead conductor 19 is connected to the fixed side contact 1 and the movable side contact 3. And is supported by the vacuum switch tube 11 so that a large electromagnetic force can be obtained with a simple configuration by effectively using the current flowing through the fixed side contact 1 and the movable side contact 3 of the vacuum switch tube 11. And the pressing force by the electromagnetic force is applied to the wiping pressure of the wiping device 15, so that the wiping device 15 and the operation mechanism SA can be reduced in size, and the lead conductor 19 is fixed to the vacuum switch tube 11. Further, it is possible to provide a vacuum circuit breaker that can promote downsizing.

この発明による実施の形態１に係る真空スイッチ管の構成を示す断面図である。It is sectional drawing which shows the structure of the vacuum switch pipe | tube which concerns on Embodiment 1 by this invention. この発明による実施の形態１に係る真空遮断器の構成を示す正面図である。It is a front view which shows the structure of the vacuum circuit breaker which concerns on Embodiment 1 by this invention. この発明による実施の形態１に係る真空遮断器の構成を示す側面図である。It is a side view which shows the structure of the vacuum circuit breaker concerning Embodiment 1 by this invention. この発明による実施の形態２に係る真空遮断器の構成を示す正面図である。It is a front view which shows the structure of the vacuum circuit breaker concerning Embodiment 2 by this invention. この発明による実施の形態２に係る真空遮断器の構成を示す側面図である。It is a side view which shows the structure of the vacuum circuit breaker concerning Embodiment 2 by this invention.

符号の説明Explanation of symbols

１固定側接点、２固定側電極棒、３可動側接点、４可動側電極棒、５固定側端板、６絶縁筒、７可動側端板、８ベローズ、９ベローズカバー、１０摺動ガイド、１１真空スイッチ管、１２操作棒、１３ワイプばね、１４ケース、１５ワイプ装置、１６可動側主回路導体、１７，１８可とう導体、１９引出導体、２０固定側主回路導体。
1 fixed side contact, 2 fixed side electrode rod, 3 movable side contact, 4 movable side electrode rod, 5 fixed side end plate, 6 insulating cylinder, 7 movable side end plate, 8 bellows, 9 bellows cover, 10 sliding guide, 11 vacuum switch tube, 12 operation rod, 13 wipe spring, 14 case, 15 wiper device, 16 movable main circuit conductor, 17, 18 flexible conductor, 19 lead conductor, 20 fixed side main circuit conductor.

Claims

固定側接点と前記固定側接点に対して接離する可動側接点とを収容する真空スイッチ管、前記真空スイッチ管と前記可動側接点の接離動作を操作する操作機構との間に設けられ前記可動側接点に対して前記固定側接点の方向に押圧力を付与するワイプ装置、前記可動側接点に接続され前記真空スイッチ管から導出される可動側電極部材、前記真空スイッチ管の外部において前記可動側電極部材に一端を接続され前記可動側接点の接離方向に対して直交方向に引き出された可動側導体、前記可動側導体と平行に前記真空スイッチ管側において固定部位に配設され一端を外部回路と接続する引出導体を備え、前記可動側導体の他端と前記引出導体の他端とを接続する可とう導体を設けたことを特徴とする真空遮断器。 A vacuum switch tube that houses a fixed side contact and a movable side contact that contacts and separates from the fixed side contact; and is provided between an operation mechanism that operates a contact and separation operation of the vacuum switch tube and the movable side contact. A wiping device that applies a pressing force to the movable contact in the direction of the fixed contact, a movable electrode member that is connected to the movable contact and led out from the vacuum switch tube, and is movable outside the vacuum switch tube A movable side conductor connected at one end to the side electrode member and drawn out in a direction perpendicular to the contact / separation direction of the movable side contact, and arranged at a fixed part on the vacuum switch tube side in parallel with the movable side conductor. A vacuum circuit breaker comprising an extraction conductor connected to an external circuit, and a flexible conductor connecting the other end of the movable conductor and the other end of the extraction conductor.

前記引出導体は前記固定側接点および前記可動側接点と電気的に絶縁され真空スイッチ管に支持されることを特徴とする請求項１記載の真空遮断器。 2. The vacuum circuit breaker according to claim 1, wherein the lead conductor is electrically insulated from the fixed side contact and the movable side contact and is supported by a vacuum switch tube.

前記可動側導体と前記引出導体とを接続する複数の可とう導体を設けたことを特徴とする請求項１または請求項２に記載の真空遮断器。
The vacuum circuit breaker according to claim 1 or 2, further comprising a plurality of flexible conductors connecting the movable side conductor and the lead conductor.