JP2008271636A - Switch - Google Patents

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JP2008271636A
JP2008271636A JP2007107843A JP2007107843A JP2008271636A JP 2008271636 A JP2008271636 A JP 2008271636A JP 2007107843 A JP2007107843 A JP 2007107843A JP 2007107843 A JP2007107843 A JP 2007107843A JP 2008271636 A JP2008271636 A JP 2008271636A
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cylindrical portion
terminal
outer peripheral
groove
shield member
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JP2007107843A
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JP4796533B2 (en
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Akira Yoshida
暁 吉田
Masahiro Arioka
正博 有岡
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that heat generation (conduction loss) is large at the time of conduction and problems that contact pieces are divided into a plurality of pieces so that it is necessary to chamfer end surfaces in order to ease electric field caused to occur to the divided portions of the contact pieces and that cost is increased because a plurality of contact pieces are combined. <P>SOLUTION: This switch is provided with: a sealed container 1, in which an insulation gas is contained; terminal members 7, which are insulated and held inside the container, in the inside circumferential portion of which holes 72a are formed for receiving a movable blade 13 in such a way as to be connected or disconnected in the axial direction, and on the outside circumferential portion of which cylindrical portions 72 having grooves 72b formed on the outside circumferential portion in the circumferential direction; electric-field easing shield members 10, which have inside circumferential surfaces 10a which can be inserted into the outside circumferential portion of the cylindrical portions and recessed portions 10c formed along the circumferential direction of the inside circumferential surfaces and the outside circumferential surface 10d of which is bent smoothly in the axial direction and formed so as to cover all the cylindrical portions; and connecting rings 14, which are mutually engaged with the grooves of the terminal members and the recessed portions of the shield members. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電力の送配電および受電設備などに用いられる開閉器に関する。   The present invention relates to a switch used in power transmission / distribution and power receiving facilities.

従来の開閉器として、周方向に分割され後端側はホルダに保持されるとともに先端側には外周方向に弓状に突出され外周面を覆うように形成された袴部を有する複数の接触片でなる固定接触子と、軸線方向に進退することにより上記固定接触子の内周面に接離する可動接触子と、上記固定接触子の外周部に上記袴部で覆われるように装着され上記各接触片に外側から上記可動接触子の軸線に垂直方向の力を付勢するガータスプリングとを備えたものがある（例えば特許文献１参照。）。   As a conventional switch, a plurality of contact pieces having a collar portion that is divided in the circumferential direction and is held by the holder at the rear end side and protrudes in an arc shape in the outer peripheral direction so as to cover the outer peripheral surface on the front end side A fixed contact consisting of: a movable contact which moves toward and away from the inner peripheral surface of the fixed contact by moving back and forth in the axial direction; and an outer peripheral portion of the fixed contact so as to be covered with the flange Each contact piece includes a garter spring that biases a force perpendicular to the axis of the movable contact from the outside (see, for example, Patent Document 1).

特開平８−２０３３６６号公報（第１頁、図１、図２）JP-A-8-203366 (first page, FIGS. 1 and 2)

上記のような従来の開閉器においては、絶縁支持物に固定している主端子部（充電部）に、複数に分割された通電接触用接触片がガータスプリングによって押し付けられており、通電経路が可動接触子−接触片−主端子となり２つの接触点を経由するために接触抵抗が大きくなり、通電時の発熱（通電損失）が大きくなるという課題があった。また、接触片が複数に分割されているために接触片の分割部に生じる電界を緩和するために端面の面取り加工が必要であり、また、複数の接触片を組み合わせるために部品費・組立費が高くなるといったコスト面での課題があった。   In the conventional switch as described above, the contact piece for energization contact divided into a plurality of parts is pressed against the main terminal portion (charging portion) fixed to the insulating support by the garter spring, and the energization path is Since the movable contactor-contact piece-main terminal becomes the main terminal and passes through the two contact points, the contact resistance increases, and there is a problem that heat generation (energization loss) during energization increases. In addition, since the contact piece is divided into a plurality of parts, chamfering of the end face is necessary to reduce the electric field generated in the divided part of the contact piece, and parts and assembly costs are required to combine the plurality of contact pieces. There was a problem in terms of cost, such as increasing the cost.

この発明は上記のような従来技術の課題を解消するためになされたもので、通電時の発熱が小さく、加工が簡単でコストを抑えることができる開閉器を得ることを目的としている。   The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to obtain a switch that generates a small amount of heat when energized, is easy to process, and can reduce costs.

この発明に係る開閉器は、絶縁性ガスが収容された密閉容器と、この密閉容器内に絶縁保持され、内周部に可動ブレードを軸方向に接離可能に受入れる穴が形成され、外周部に周方向に形成された溝を有する筒状部が突設された端子部材と、上記筒状部の外周部に嵌め込み可能な嵌合穴を有すると共に、該嵌合穴の周方向に沿って形成された凹部を有し、外周面が軸方向に滑らかに湾曲されて上記筒状部を一様に覆うように形成された電界緩和用のシールド部材と、上記端子部材の溝及び上記シールド部材の凹部の相互に係止された連結リングとを備えたものである。   The switch according to the present invention includes an airtight container containing an insulating gas, an insulating holding in the airtight container, and a hole in the inner peripheral part for receiving the movable blade in an axially detachable manner. And a terminal member provided with a cylindrical portion having a groove formed in the circumferential direction, a fitting hole that can be fitted into the outer circumferential portion of the cylindrical portion, and along the circumferential direction of the fitting hole. A shield member for electric field relaxation, which has a formed recess and whose outer peripheral surface is smoothly curved in the axial direction so as to uniformly cover the tubular portion, the groove of the terminal member, and the shield member And a connecting ring engaged with each other in the recesses.

この発明においては、外周面が軸方向に滑らかに湾曲されて筒状部を一様に覆うように形成された電界緩和用のシールド部材を用いているので、外周面に段差や継ぎ目があるものに比べてシールド外面に生じる電界が一層低減される。また、一体的にできることからコストを低減できる。また、通電経路を可動ブレード−端子部材としたので接触点数が１箇所となり、通電時の発熱を低減できる効果が得られる。   In this invention, since the outer peripheral surface is smoothly curved in the axial direction and the shielding member for electric field relaxation formed so as to uniformly cover the cylindrical portion is used, there is a step or a seam on the outer peripheral surface. Compared to the above, the electric field generated on the outer surface of the shield is further reduced. Moreover, since it can be integrated, cost can be reduced. Further, since the energization path is a movable blade-terminal member, the number of contact points is one, and the effect of reducing heat generation during energization can be obtained.

実施の形態１．
図１〜図４はこの発明の実施の形態１に係るガス絶縁式の開閉器の要部を説明するもので、図１は開閉部を示す側面断面図、図２〜図４は図１に示された端子部材（固定端子）に電解緩和用のシールド部材を取付けるときの過程を示す側面断面図で、図２は係合前、図３は端子部材に電解緩和用のシールド部材を当接したとき、図４は取付け完了時を示す。図において、ガス絶縁式の開閉器は所定部に開口部１ａを有する接地された金属製の密閉容器１と、この密閉容器１の開口部１ａに着脱自在に取付けられたベース板２の密閉容器１内面側に設置された主回路部３と、ベース板２の密閉容器１の外側に設けられた操作機構部４と、主回路部３及び操作機構部４を連結するベース板２を気密に貫通して摺動または回転が可能なガスシール駆動軸５によって構成され、密閉容器１の内部には例えばＳＦ６ガス、ドライエア、窒素ガス、二酸化炭素ガスなどの絶縁性ガスが封入される。 Embodiment 1 FIG.
1 to 4 are for explaining the main part of the gas-insulated switch according to Embodiment 1 of the present invention. FIG. 1 is a side sectional view showing the switch, and FIGS. FIG. 2 is a side cross-sectional view showing a process when attaching a shield member for electrolytic relaxation to the terminal member (fixed terminal) shown, FIG. 2 is before engagement, and FIG. 3 is abutting the shield member for electrolytic relaxation on the terminal member FIG. 4 shows when the installation is completed. In the figure, a gas-insulated switch includes a grounded metal sealed container 1 having an opening 1a at a predetermined portion, and a sealed container of a base plate 2 removably attached to the opening 1a of the sealed container 1. 1. The main circuit unit 3 installed on the inner surface side, the operation mechanism unit 4 provided outside the sealed container 1 of the base plate 2, and the base plate 2 connecting the main circuit unit 3 and the operation mechanism unit 4 are airtight. A gas seal drive shaft 5 that can be slid through or rotated is formed, and an insulating gas such as SF 6 gas, dry air, nitrogen gas, and carbon dioxide gas is sealed inside the sealed container 1.

主回路部３は、ベース板２に対して密閉容器１の内側方向に突出するように固定された絶縁支持部材６と、この絶縁支持部材６に対してそれぞれボルト等の締結手段（図示省略）によって互いに離間して固定された端子部材７である可動端子７Ａ及び固定端子７Ｂと、絶縁支持部材６の基部近傍に設けられた接地端子９と、可動端子７Ａ及び固定端子７Ｂに設けられた電界緩和用のシールド部材１０（１０Ａ）と、ガスシール駆動軸５によって絶縁ロッド１１及び駆動ロッド１２を介して図の左右方向の軸Ａに沿って移動される可動ブレード１３を用いて構成されている。端子部材７である可動端子７Ａ及び固定端子７Ｂはこの例では同一の形状に構成されており、以下特に区別する必要がある場合を除いて端子部材７と呼び、固定端子７Ｂ部を拡大して示す図２〜図４を参照してさらに具体的に説明する。   The main circuit unit 3 includes an insulating support member 6 fixed to the base plate 2 so as to protrude inward of the sealed container 1, and fastening means such as bolts (not shown) for the insulating support member 6. The movable terminal 7A and the fixed terminal 7B, which are the terminal members 7 fixed apart from each other, the ground terminal 9 provided near the base of the insulating support member 6, and the electric field provided on the movable terminal 7A and the fixed terminal 7B. It is configured using a relaxation shield member 10 (10A) and a movable blade 13 that is moved by a gas seal drive shaft 5 through an insulating rod 11 and a drive rod 12 along a horizontal axis A in the drawing. . The movable terminal 7A and the fixed terminal 7B, which are the terminal members 7, are configured in the same shape in this example, and are hereinafter referred to as the terminal members 7 unless particularly distinguished, and the fixed terminal 7B portion is enlarged. This will be described more specifically with reference to FIGS.

端子部材７は、この例では２つの「円筒」を直角にクロスさせたような外観形状をなしており、中央部の「円筒」は、軸Ａに直交する中心軸Ｂを図の上下方向に向け、上端部に絶縁支持部材６への取付け用穴または雌ネジ（図示省略）を有する取付け用の基部７１として構成されている。そして、軸Ａ方向に形成された「円筒」は、内周部に可動ブレード１３を軸Ａ方向に接離可能に受入れる穴７２ａを有し、外周部に周方向の溝７２ｂと、溝７２ｂの外側頂部から先端部に向けて先細りとなるように形成された傾斜面７２ｃを有する筒状部７２として構成されている。なお、該筒状部７２は基部７１に対して左右両方向に対称的に突出されている。   In this example, the terminal member 7 has an external shape in which two “cylinders” are crossed at right angles, and the central “cylinder” has a central axis B perpendicular to the axis A in the vertical direction in the figure. The mounting base 71 has a mounting hole or a female screw (not shown) to the insulating support member 6 at the upper end. The “cylinder” formed in the direction of the axis A has a hole 72a for receiving the movable blade 13 in the direction of the axis A so that the movable blade 13 can be contacted and separated in the direction of the axis A, and the circumferential groove 72b and the groove 72b It is comprised as the cylindrical part 72 which has the inclined surface 72c formed so that it might taper toward the front-end | tip part from an outer side top part. The cylindrical portion 72 protrudes symmetrically with respect to the base portion 71 in both the left and right directions.

シールド部材１０は、上記筒状部７２の外周部に嵌め込み可能な嵌合穴１０ａと、この嵌合穴１０ａより小径の可動ブレード１３を挿通させる挿通孔１０ｂを有すると共に、該嵌合穴１０ａの内周面に周方向に沿って形成された幅Ｗ、深さＨの溝状の凹部１０ｃを有し、外周面１０ｄが軸Ａ方向に滑らかに湾曲されて上記筒状部７２のまわりを一様に覆うように形成されている。該シールド部材１０、１０Ａは、凹部１０ｃに、断面外径（線径）φが該凹部１０ｃの溝幅Ｗより狭く、外力が加わっていない状態での内側直径Ｌが筒状部７２の外周面に設けた溝７２ｂの底部の直径Ｍより小さい弾性を有するコイル状スプリングからなる連結リング１４を図２に示すように装着した後、矢印Ｅ、Ｆで示す方向にそれぞれ移動して端子部材７の筒状部７２外周に嵌め込むことで、図４に示すように連結リング１４がシールド部材１０の凹部１０ｃと筒状部７２の外周面に設けた溝７２ｂとの間に係止された状態で筒状部７２に対して固定される。   The shield member 10 has a fitting hole 10a that can be fitted into the outer peripheral portion of the cylindrical portion 72, and an insertion hole 10b through which the movable blade 13 having a smaller diameter than the fitting hole 10a is inserted. A groove-shaped recess 10c having a width W and a depth H formed along the circumferential direction is formed on the inner peripheral surface, and the outer peripheral surface 10d is smoothly curved in the axis A direction so that the circumference of the cylindrical portion 72 is uniform. It is formed so as to cover. The shield member 10, 10 </ b> A has a recess 10 c with an outer diameter (wire diameter) φ that is narrower than the groove width W of the recess 10 c, and an inner diameter L when no external force is applied. 2, the connecting ring 14 made of a coiled spring having an elasticity smaller than the diameter M at the bottom of the groove 72 b is mounted as shown in FIG. 2, and then moved in the directions indicated by arrows E and F to move the terminal member 7. In the state where the coupling ring 14 is locked between the recess 10c of the shield member 10 and the groove 72b provided on the outer peripheral surface of the cylindrical part 72 as shown in FIG. It is fixed with respect to the cylindrical part 72.

なお、上記装着作業を容易にするために、傾斜面７２ｃの先端部における最小外径部の直径Ｎは、上記連結リング１４の内側内径Ｌより小さな寸法であることが望ましい。また、連結リング１４の断面形状は特に限定されるものではないが、筒状部７２の外周面に設けた溝７２ｂに当接する部位が、例えば円形、楕円形、長円形及びＵ字形の何れかの曲線状とすることは好ましい。また、凹部１０ｃの深さＨは連結リング１４の断面外径（線径）φよりも大に形成しておくことが必要である。なお、固定端子７Ｂの図１の右側に装着されたシールド部材１０Ａは挿通孔１０ｂ部分が塞がれた形状に構成されているが、その他の構成部分は実質的にシールド部材１０と同様であるので、以下区別の必要がある場合を除いてシールド部材１０として説明する。   In order to facilitate the mounting operation, it is desirable that the diameter N of the minimum outer diameter portion at the distal end portion of the inclined surface 72c is smaller than the inner inner diameter L of the connecting ring 14. Further, the cross-sectional shape of the connection ring 14 is not particularly limited, but the portion that contacts the groove 72b provided on the outer peripheral surface of the cylindrical portion 72 is, for example, any one of a circle, an ellipse, an oval, and a U-shape. It is preferable to have a curved shape. In addition, the depth H of the recess 10 c needs to be formed larger than the cross-sectional outer diameter (wire diameter) φ of the connecting ring 14. The shield member 10A attached to the right side of the fixed terminal 7B in FIG. 1 has a shape in which the insertion hole 10b portion is closed, but the other components are substantially the same as the shield member 10. Therefore, it demonstrates as the shield member 10 except the case where it is necessary to distinguish below.

上記可動ブレード１３は略円筒状に形成されており、その内周面には、上記駆動ロッド１２の外周面に設けた雄ねじ（図示省略）に螺合する雌ねじ（図示省略）が設けられ、外周面には軸方向両端部に２箇所ずつ形成された周方向の溝と、その溝にそれぞれ設けられた４つの接触子１３１と、筒状部７２に対して軸Ａのまわりの回転を阻止する手段（図示省略）が設けられており、ガスシール駆動軸５を操作機構部４によって回転させ、ガスシール駆動軸５に連結された絶縁ロッド１１を介して駆動ロッド１２が回転することによって該可動ブレード１３を軸Ａ方向に移動し、筒状部７２の穴７２ａと可動ブレード１３の外周面に設けた接触子１３１が接離して開閉を行なう構造となっているが、これらは従来装置と同様であるので詳細図示を省略している。また、上記のように構成された主回路部３はユニット化され、密閉容器１内に相数等に応じた必要数組込まれ図示を省略している給電線路等と電気的に接続される。   The movable blade 13 is formed in a substantially cylindrical shape, and has an inner peripheral surface provided with a female screw (not shown) that engages with a male screw (not shown) provided on the outer peripheral surface of the drive rod 12. On the surface, circumferential grooves formed at two positions on both ends in the axial direction, four contactors 131 respectively provided in the grooves, and rotation around the axis A with respect to the cylindrical portion 72 are prevented. Means (not shown) are provided, and the gas seal drive shaft 5 is rotated by the operation mechanism unit 4, and the drive rod 12 rotates through the insulating rod 11 connected to the gas seal drive shaft 5. The blade 13 is moved in the direction of the axis A, and the hole 72a of the cylindrical portion 72 and the contact 131 provided on the outer peripheral surface of the movable blade 13 are brought into contact with and separated from each other. So detailed illustration It is omitted. Further, the main circuit unit 3 configured as described above is unitized and is electrically connected to a feed line or the like that is incorporated in the sealed container 1 according to the number of phases and the like and is not shown.

次に、上記のように構成された実施の形態１の動作について説明する。まず、シールド部材１０を端子部材７に装着する場合には、最初に、シールド部材１０の嵌合穴１０ａに設けた凹部１０ｃに連結リング１４を図２のように装着し、次に、連結リング１４を装着したシールド部材１０の嵌合穴１０ａの内側に端子部材７の筒状部７２が嵌まり込むように図３に示すようにシールド部材１０を端子部材７の筒状部７２の軸Ａ方向に沿う矢印Ｅ、Ｆ方向に押し付ける。このとき、押し付け力によって端子部材７の筒状部７２の端部に設けた傾斜面７２ｃに沿って筒状部７２の外形寸法まで連結リング１４が拡張される。更にシールド部材１０を矢印Ｅ、または矢印Ｆ方向に押し付けると、図４に示すように連結リング１４は筒状部７２の外周に設けた溝７２ｂに、連結リング１４の弾性力によって嵌まり込み、端子部材７とシールド部材１０とが連結される。   Next, the operation of the first embodiment configured as described above will be described. First, when the shield member 10 is attached to the terminal member 7, the connection ring 14 is first attached to the recess 10c provided in the fitting hole 10a of the shield member 10 as shown in FIG. As shown in FIG. 3, the shield member 10 is connected to the axis A of the cylindrical portion 72 of the terminal member 7 so that the cylindrical portion 72 of the terminal member 7 is fitted inside the fitting hole 10a of the shield member 10 to which 14 is attached. Press in the direction of arrows E and F along the direction. At this time, the connecting ring 14 is expanded to the outer dimension of the cylindrical portion 72 along the inclined surface 72c provided at the end of the cylindrical portion 72 of the terminal member 7 by the pressing force. When the shield member 10 is further pressed in the direction of arrow E or arrow F, the connecting ring 14 is fitted into the groove 72b provided on the outer periphery of the cylindrical portion 72 by the elastic force of the connecting ring 14, as shown in FIG. The terminal member 7 and the shield member 10 are connected.

上記のようにしてシールド部材１０を可動端子７Ａの左右の筒状部７２及び固定端子７Ｂの左側の筒状部７２に装着し、シールド部材１０Ａを固定端子７Ｂの右側の筒状部７２に装着することで、図１に示すように組立てられ、密閉容器１内にＳＦ６ガス、ドライエア、窒素ガス、二酸化炭素ガスなどの絶縁性ガスが封入され、図の例では断路器（ＤＳ）に接地開閉器（ＥＳ）の機能が付加された３位置断路器として用いられる。図１の状態では、実線で示す可動ブレード１３は可動端子７Ａ内に位置し、断路状態にある。操作機構部４によりガスシール駆動軸５を回転させて可動ブレード１３を２点鎖線Ｃで示す位置に移動することで可動端子７Ａが接地された状態となり、可動ブレード１３を２点鎖線Ｄで示す位置に移動することで可動端子７Ａと固定端子７Ｂとが接続された状態となる。上記シールド部材１０は、接地された密閉容器１、何れも図示省略している異相充電部、及び同相の対向する電極の何れか１つ以上または全てとの間の電界を緩和する機能を有している。 As described above, the shield member 10 is mounted on the left and right cylindrical portions 72 of the movable terminal 7A and the left cylindrical portion 72 of the fixed terminal 7B, and the shield member 10A is mounted on the right cylindrical portion 72 of the fixed terminal 7B. 1 is assembled, and an insulating gas such as SF 6 gas, dry air, nitrogen gas, carbon dioxide gas, etc. is sealed in the sealed container 1, and in the example shown in the figure, grounded to the disconnector (DS) Used as a 3-position disconnect switch with the function of a switch (ES). In the state of FIG. 1, the movable blade 13 indicated by a solid line is located in the movable terminal 7A and is in a disconnected state. When the gas seal drive shaft 5 is rotated by the operation mechanism unit 4 and the movable blade 13 is moved to the position indicated by the two-dot chain line C, the movable terminal 7A is grounded, and the movable blade 13 is indicated by the two-dot chain line D. The movable terminal 7A and the fixed terminal 7B are connected by moving to the position. The shield member 10 has a function of relaxing an electric field between one or more or all of the grounded sealed container 1, the different-phase charging unit (not shown), and the opposite electrodes of the same phase. ing.

上記のような実施の形態１においては、シールド部材１０は１つの部品で構成されているので外周面の段差、継ぎ目を無くすことができ、これにより、シールド外面に生じる電界を低減すると共にコスト低減を可能にし、また、通電経路を可動ブレード１３−端子部材７としたことにより接触点数が１箇所に減り、これにより通電時の発熱量を低減できる効果が得られる。また、連結リング１４の断面は、端子部材７の筒状部７２の外周に設けた溝７２ｂに当接する部位が曲線となる円形、楕円形、長円形またはＵ字形の何れかとすることにより、シールド部材１０を端子部材７の筒状部７２に挿入する際に、連結リング１４によって端子部材７の筒状部７２の外周を傷付けず、金属粉などの発生を抑止できる効果が得られる。   In the first embodiment as described above, since the shield member 10 is composed of one component, it is possible to eliminate steps and joints on the outer peripheral surface, thereby reducing the electric field generated on the outer surface of the shield and reducing the cost. In addition, since the energization path is the movable blade 13 and the terminal member 7, the number of contact points is reduced to one, thereby obtaining the effect of reducing the amount of heat generated during energization. Further, the cross-section of the connecting ring 14 is either a circle, an ellipse, an oval, or a U-shape that has a curved portion that contacts the groove 72b provided on the outer periphery of the cylindrical portion 72 of the terminal member 7. When the member 10 is inserted into the cylindrical portion 72 of the terminal member 7, the connection ring 14 does not damage the outer periphery of the cylindrical portion 72 of the terminal member 7, and the effect of suppressing generation of metal powder or the like is obtained.

また、シールド部材１０の嵌合穴１０ａに周方向に設けた凹部１０ｃは、幅Ｗを連結リング１４の断面外径（線径）φより大きく、深さＨを連結リング１４の線径φより深く、底面を平面、半円状またはＶ字状とすることにより、筒状部７２の外周にシールド部材１０を挿入する際に、シールド部材１０の凹部１０ｃ内に連結リング１４が拡張されて収まるので、連結リング１４とシールド部材１０及び端子部材７が干渉するのを防ぎ、作業を容易に行なえる効果が得られる。さらに、筒状部７２の端部に、連結リング１４に外力が加わっていない状態での連結リング１４の内側直径Ｌより小さな直径Ｎで筒状部７２の端面と交わる傾斜面７２ｃを設けたことにより、シールド部材１０を端子部材７に挿入する際に、上記傾斜面７２ｃによって連結リング１４の拡張が容易となるので挿入作業を簡単に行なうことができる効果が得られる。   Further, the recess 10 c provided in the circumferential direction in the fitting hole 10 a of the shield member 10 has a width W larger than the cross-sectional outer diameter (wire diameter) φ of the connecting ring 14 and a depth H larger than the wire diameter φ of the connecting ring 14. Deeply, when the shield member 10 is inserted into the outer periphery of the cylindrical portion 72, the connection ring 14 is expanded and accommodated in the recess 10c of the shield member 10 by making the bottom surface flat, semicircular or V-shaped. Therefore, it is possible to prevent the coupling ring 14, the shield member 10, and the terminal member 7 from interfering with each other, and to obtain an effect that the operation can be easily performed. Furthermore, an inclined surface 72c that intersects the end surface of the cylindrical portion 72 with a diameter N smaller than the inner diameter L of the connecting ring 14 in a state where no external force is applied to the connecting ring 14 is provided at the end of the cylindrical portion 72. Accordingly, when the shield member 10 is inserted into the terminal member 7, the connecting ring 14 can be easily expanded by the inclined surface 72c, so that the insertion operation can be easily performed.

また、主回路部３を構成する各部材の材料は特に限定されるものではないが、例えば端子部材７の材料を銅、シールド部材１０の材料を黄銅または銅とし、連結リング１４及び接触子１３１の材料を銅、りん青銅、ベリリウム銅などの銅系統の材料を用いることにより、端子部材７、シールド部材１０、連結リング１４および接触子１３１を個々に分解することなく、絶縁支持部材６から端子部材７を単に取り外すことにより、部品の分別回収を行なうことができ、廃棄時の分解作業が容易になる効果が得られる。   Further, the material of each member constituting the main circuit portion 3 is not particularly limited. For example, the material of the terminal member 7 is copper, the material of the shield member 10 is brass or copper, and the connection ring 14 and the contact 131. By using a copper-based material such as copper, phosphor bronze, and beryllium copper, the terminal member 7, the shield member 10, the connection ring 14, and the contact 131 are not disassembled individually, and the terminal is connected from the insulating support member 6. By simply removing the member 7, it is possible to separate and collect the parts, and the effect of facilitating the disassembling work at the time of disposal can be obtained.

なお、上記実施の形態１では、この発明の開閉器を、断路器（ＤＳ）に接地開閉器（ＥＳ）の機能が付加された３位置断路器として構成したが、これに限定されるものではなく、例えば断路器（ＤＳ）、接地開閉器（ＥＳ）などとして用いることができることは言うまでもない。また、接触子１３１を可動ブレード１３の周りに設置したが、端子部材７の筒状部７２の内周面側の穴７２ａに設けても差し支えない。さらに、可動ブレード１３の周り止め機構としては、例えば穴７２ａ及び可動ブレード１３の外周部の何れか一方に軸Ａ方向の溝を、他方に該溝に係合する突起を設けること等で容易に実現できるが、これに限定されるものではない。その他、端子部材７の外観形状、操作機構、移動機構などを、この発明の範囲内で適宜変形または変更できることは当然である。   In the first embodiment, the switch according to the present invention is configured as a three-position disconnect switch in which the function of the ground switch (ES) is added to the disconnect switch (DS). However, the present invention is not limited to this. Needless to say, it can be used, for example, as a disconnect switch (DS) or a ground switch (ES). Further, although the contact 131 is installed around the movable blade 13, it may be provided in the hole 72 a on the inner peripheral surface side of the cylindrical portion 72 of the terminal member 7. Further, as a mechanism for stopping the rotation of the movable blade 13, for example, a groove in the axis A direction is provided on one of the hole 72a and the outer peripheral portion of the movable blade 13, and a protrusion engaging with the groove is provided on the other. Although it is realizable, it is not limited to this. In addition, it is natural that the appearance shape, the operation mechanism, the movement mechanism, and the like of the terminal member 7 can be appropriately modified or changed within the scope of the present invention.

本発明の実施の形態１に係る開閉器の要部である開閉部を示す側面断面図。Side surface sectional drawing which shows the switch part which is the principal part of the switch concerning Embodiment 1 of this invention. 図１に示された端子部材に電解緩和用のシールド部材を取付けるときの過程（係合前）を示す側面断面図。Side surface sectional drawing which shows the process (before engagement) when attaching the shielding member for electrolytic relaxation to the terminal member shown by FIG. 図１に示された端子部材に電解緩和用のシールド部材を取付けるときの過程（端子部材に対するシールド部材の当接時）を示す側面断面図。FIG. 3 is a side cross-sectional view showing a process (when the shield member comes into contact with the terminal member) when attaching the shielding member for electrolytic relaxation to the terminal member shown in FIG. 1. 図１に示された端子部材に電解緩和用のシールド部材を取付けるときの過程（取付け完了時）を示す側面断面図。Side surface sectional drawing which shows the process (at the time of completion of attachment) when attaching the shielding member for electrolytic relaxation to the terminal member shown by FIG.

符号の説明Explanation of symbols

１ 密閉容器、 １ａ 開口部、 ２ ベース板、 ３ 主回路部、 ４ 操作機構部、 ５ ガスシール駆動軸、 ６ 絶縁支持部材、 ７ 端子部材、 ７Ａ 可動端子、 ７Ｂ 固定端子、 ７１ 基部、 ７２ 筒状部、 ７２ａ 穴、 ７２ｂ 溝、 ７２ｃ 傾斜面、 ９ 接地端子、 １０、１０Ａ シールド部材、 １０ａ 嵌合穴、 １０ｂ 挿通孔、 １０ｃ 凹部、 １０ｄ 外周面、 １１ 絶縁ロッド、 １２ 駆動ロッド、 １３ 可動ブレード、 １３１ 接触子、 １４ 連結リング、 Ａ 軸、 Ｂ 中心軸。   DESCRIPTION OF SYMBOLS 1 Airtight container, 1a Opening part, 2 Base board, 3 Main circuit part, 4 Operation mechanism part, 5 Gas seal drive shaft, 6 Insulation support member, 7 Terminal member, 7A Movable terminal, 7B Fixed terminal, 71 Base, 72 cylinder , 72a hole, 72b groove, 72c inclined surface, 9 grounding terminal, 10, 10A shield member, 10a fitting hole, 10b insertion hole, 10c recess, 10d outer peripheral surface, 11 insulating rod, 12 drive rod, 13 movable blade 131 Contact, 14 Connecting ring, A axis, B Central axis.

Claims (6)

絶縁性ガスが収容された密閉容器と、この密閉容器内に絶縁保持され、内周部に可動ブレードを軸方向に接離可能に受入れる穴が形成され、外周部に周方向に形成された溝を有する筒状部が突設された端子部材と、上記筒状部の外周部に嵌め込み可能な嵌合穴を有すると共に、該嵌合穴の周方向に沿って形成された凹部を有し、外周面が軸方向に滑らかに湾曲されて上記筒状部を一様に覆うように形成された電界緩和用のシールド部材と、上記端子部材の溝及び上記シールド部材の凹部の相互に係止された連結リングとを備えたことを特徴とする開閉器。   A sealed container containing an insulating gas, and a groove that is insulated and held in the sealed container, and has a hole formed in the inner peripheral portion thereof for receiving and moving the movable blade in the axial direction, and a circumferentially formed groove in the outer peripheral portion. And a terminal member provided with a protruding cylindrical portion, and a fitting hole that can be fitted into the outer peripheral portion of the cylindrical portion, and a recess formed along the circumferential direction of the fitting hole, The shield member for electric field relaxation formed so that the outer peripheral surface is smoothly curved in the axial direction and uniformly covers the cylindrical portion, and the groove of the terminal member and the concave portion of the shield member are engaged with each other. A switch comprising a connecting ring. 上記シールド部材の凹部は、幅が上記連結リングの断面外径より大きく、深さが該連結リングの断面外径より深く形成されていることを特徴とする請求項１に記載の開閉器。   2. The switch according to claim 1, wherein the recess of the shield member has a width larger than a cross-sectional outer diameter of the connecting ring and a depth deeper than a cross-sectional outer diameter of the connecting ring. 上記連結リングの断面は、上記筒状部の外周部に設けられた溝に当接する部位が曲線状に形成されていることを特徴とする請求項１または請求項２に記載の開閉器。   3. The switch according to claim 1, wherein a cross section of the connection ring is formed in a curved shape at a portion that comes into contact with a groove provided on an outer peripheral portion of the cylindrical portion. 上記筒状部の外周面は、該筒状部の突出方向に対し上記溝の位置より突出側から突出端に向けて外径が小さくなるように傾斜された傾斜面を有することを特徴とする請求項１ないし請求項３の何れかに記載の開閉器。   The outer peripheral surface of the cylindrical portion has an inclined surface that is inclined with respect to the protruding direction of the cylindrical portion so that the outer diameter decreases from the protruding side to the protruding end from the position of the groove. The switch according to any one of claims 1 to 3. 上記傾斜面の最小外径部は、上記連結リングに外力が加わっていない状態での該連結リングの内径より小さな直径であることを特徴とする請求項４に記載の開閉器。   The switch according to claim 4, wherein the minimum outer diameter portion of the inclined surface has a diameter smaller than the inner diameter of the connection ring in a state where no external force is applied to the connection ring. 上記端子部材の材料を銅、上記シールド部材の材料を黄銅または銅、上記連結リング及び上記可動ブレードの材料を、銅、りん青銅、及びベリリウム銅を含む銅系統の材料から選ばれたものとしたことを特徴とする請求項１ないし請求項５の何れかに記載の開閉器。   The material of the terminal member is copper, the material of the shield member is brass or copper, the material of the connecting ring and the movable blade is selected from copper-based materials including copper, phosphor bronze, and beryllium copper. The switch according to any one of claims 1 to 5, wherein the switch is provided.
JP2007107843A 2007-04-17 2007-04-17 Switch Active JP4796533B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595216U (en) * 1978-12-26 1980-07-02
JPH0332326U (en) * 1989-08-07 1991-03-28
JPH0629319U (en) * 1992-09-09 1994-04-15 日新電機株式会社 Conductor shield for gas insulated switchgear
JPH08203366A (en) * 1995-01-31 1996-08-09 Mitsubishi Electric Corp Tulip contact device
JPH09233632A (en) * 1996-02-23 1997-09-05 Nissin Electric Co Ltd Pressure releasing apparatus
JPH1040784A (en) * 1996-07-22 1998-02-13 Mitsubishi Electric Corp Gas-insulated switchgear
JP2002209326A (en) * 2001-01-11 2002-07-26 Mitsubishi Electric Corp Gas-insulated gear and its insulation spacer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595216U (en) * 1978-12-26 1980-07-02
JPH0332326U (en) * 1989-08-07 1991-03-28
JPH0629319U (en) * 1992-09-09 1994-04-15 日新電機株式会社 Conductor shield for gas insulated switchgear
JPH08203366A (en) * 1995-01-31 1996-08-09 Mitsubishi Electric Corp Tulip contact device
JPH09233632A (en) * 1996-02-23 1997-09-05 Nissin Electric Co Ltd Pressure releasing apparatus
JPH1040784A (en) * 1996-07-22 1998-02-13 Mitsubishi Electric Corp Gas-insulated switchgear
JP2002209326A (en) * 2001-01-11 2002-07-26 Mitsubishi Electric Corp Gas-insulated gear and its insulation spacer

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