JPH10336820A - Grounding disconnector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grounding disconnector having reliably joined disconnection bars, easy to assemble, and capable of reducing the installation space of a gas insulation metallic sealed switchgear. SOLUTION: An insulation tube 3A is fixed to a rear side of a flange 1 with a mounting plate 2 in between. A grounding conductor 7A is passed through the flange 1 with an insulating stage 4, and a seal case 5 is fixed on the front side of the insulating stage 4. A disconnection bar 6A is passed through a cylindrical part of the grounding insulating conductor 7A, while the rear end of the disconnection bar 6A is passed through a contactor 8B mounted at a rear end of the insulating tube 3A through a terminal plate 11. Also, a contactor 8A is put at a rear end of a cylindrical part 7a. In the disconnection bar 6A, an insulating layer 17A is put between a joining part at the front end of the disconnection part 6A and a recessed rear end of an operation part 6b.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、接地断路器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground disconnector.

【０００２】[0002]

【従来の技術】図３は、従来の接地断路器の一例を示す
縦断面図で、ガス絶縁金属閉鎖形スイッチギヤの箱体の
隔壁に取り付けられ、投入された状態を示す図である。
また、図４（ａ）は、図３で示した接地断路器に組み込
まれた断路棒６Ｃを示す図、図４（ｂ）は、図４（ａ）
のＣ部拡大図である。2. Description of the Related Art FIG. 3 is a longitudinal sectional view showing an example of a conventional grounding disconnector, which is attached to a partition wall of a box body of a gas insulated metal closed type switchgear, and shows a state where the switchgear is closed.
FIG. 4A is a view showing a disconnecting rod 6C incorporated in the grounding disconnector shown in FIG. 3, and FIG. 4B is a view showing FIG.
FIG.

【０００３】まず、図３において、図示しないガス絶縁
金属閉鎖形スイッチギヤの前端の大気絶縁室とこの後部
のガス絶縁室を気密に仕切る隔壁19の前面側には、フラ
ンジ１が、このフランジ１の外周の背面に挿着された図
示しないＯリングを介して前方からボルトで固定されて
いる。First, in FIG. 3, a flange 1 is provided on the front side of a partition wall 19 which air-tightly separates a front end of a gas insulated metal closed type switchgear (not shown) from a front end of a gas insulated chamber. Is fixed with bolts from the front via an O-ring (not shown) inserted into the back surface of the outer periphery of the.

【０００４】このフランジ１の背面には、図示しないＯ
リングとボルトを介して取付板２が背面側から固定さ
れ、この取付板２の更に背面には、エポキシ樹脂の注型
成形によって略円筒状に形成された絶縁筒３Ｂが３本の
ボルト13で取付板２の前面側から取り付けられている。
符号３ａは、ボルトによる締付のために 120°間隔に埋
設された埋金を示す。[0004] On the back of the flange 1, an O (not shown) is provided.
The mounting plate 2 is fixed from the rear side via a ring and a bolt. On the rear surface of the mounting plate 2, an insulating cylinder 3 B formed into a substantially cylindrical shape by casting of epoxy resin is used with three bolts 13. It is mounted from the front side of the mounting plate 2.
Reference numeral 3a designates a burial buried at 120 ° intervals for bolting.

【０００５】フランジ１の中心には、貫通穴が形成さ
れ、この貫通穴の前端の外周には、Ｏリング14が溝に挿
着されている。このＯリング14が挿着されたフランジ１
の前面には、絶縁台４が取り付けられ、この絶縁台４に
は、接地導体７Ｂの前端があらかじめ埋設されている。
この接地導体７Ｂの前端には、図示しない接地母線に接
続される導体が接続される端子部７ｂが形成されてい
る。[0005] A through hole is formed at the center of the flange 1, and an O-ring 14 is inserted into the groove on the outer periphery of the front end of the through hole. Flange 1 with this O-ring 14 inserted
Is mounted on the front surface thereof, and a front end of the ground conductor 7B is embedded in the insulating table 4 in advance.
At the front end of the ground conductor 7B, a terminal portion 7b to which a conductor connected to a ground bus (not shown) is connected is formed.

【０００６】この絶縁台４の更に前面には、断面が凸字
状で黄銅材から製作されたシールケース５がＯリング14
を介して添設され、このシールケース５と前述した絶縁
台４は、シールケース５の後部に形成されたフランジ部
５ａに前方から挿入された図示しないボルトでフランジ
１に固定されている。On the front surface of the insulating base 4, a seal case 5 having a convex cross section and made of brass is provided with an O-ring 14.
The seal case 5 and the above-described insulating table 4 are fixed to the flange 1 by bolts (not shown) inserted from the front into a flange portion 5a formed at a rear portion of the seal case 5.

【０００７】シールケース５の内周には、Ｙパッキン15
が二重に挿入され、このＹパッキン15の前方に対して塵
埃の侵入を防ぐスクレーバ16が挿入されている。シール
ケース５の中心には、図４（ａ），（ｂ）で詳細後述す
る断路棒６Ｃが前方から挿入され、この断路棒６Ｃの前
端は、シールケース５の前端から連結部が突き出てい
る。符号６ｋは、この断路棒６Ｃがフランジ１の前面に
取り付けられた図示しない操作機構に連結される連結ピ
ンの挿入穴を示す。[0007] On the inner periphery of the seal case 5, a Y packing 15 is provided.
Are inserted doubly, and a scraper 16 for preventing intrusion of dust is inserted in front of the Y packing 15. In the center of the seal case 5, a disconnecting rod 6 </ b> C, which will be described in detail later with reference to FIGS. 4A and 4B, is inserted from the front, and a front end of the disconnecting rod 6 </ b> C projects from a front end of the seal case 5. . Reference numeral 6k denotes an insertion hole for a connecting pin for connecting the disconnecting rod 6C to an operating mechanism (not shown) mounted on the front surface of the flange 1.

【０００８】接地導体７Ｂの後方に円筒状に突き出た円
筒部７ｃの後端の外周には、断面が弧状の溝が環状に形
成されている。この溝の外周には、引抜き導体から製作
された複数の接触子８Ａが等間隔に配置され、接触子８
Ａの前方の対向側に形成された弧状の凸部が前述した溝
に接触している。An annular groove having an arc-shaped cross section is formed in the outer periphery of the rear end of the cylindrical portion 7c which protrudes cylindrically behind the ground conductor 7B. A plurality of contacts 8A made of a drawn conductor are arranged at equal intervals around the outer periphery of the groove.
An arc-shaped convex portion formed on the front facing side of A is in contact with the above-described groove.

【０００９】これらの接触子８Ａの外周には、内周に複
数の凹凸が歯車状に形成された環状の間隔板８ａが設け
られ、この間隔板８ａの内周に形成された凹部に接触子
８Ａが挿入されて、所定の間隔が維持されている。On the outer periphery of the contact 8A, there is provided an annular spacing plate 8a having a plurality of irregularities formed in a gear shape on the inner periphery, and the contact is provided in a recess formed on the inner periphery of the spacing plate 8a. 8A is inserted, and a predetermined interval is maintained.

【００１０】さらに、これらの接触子８Ａの外周には、
間隔板８ａの前後に対して、密着巻きのコイルばねを環
状にした加圧ばね９が伸張状態で巻装され、この加圧ば
ねの復帰力によって、各接触子８Ａの対向側に形成され
た弧状の凸部の対向面は、接地導体７Ｂの後端外周の溝
部とこの溝部の後方に突き出た断路棒６Ｃの外周面に所
定の圧力で押圧されている。Further, on the outer periphery of these contacts 8A,
A pressure spring 9 in the form of a tightly wound coil spring is wound around the spacing plate 8a in an extended state, and formed on the opposite side of each contact 8A by the return force of the pressure spring. The opposing surface of the arc-shaped convex portion is pressed against the outer peripheral surface of the groove on the outer periphery of the rear end of the ground conductor 7B and the outer peripheral surface of the disconnecting rod 6C protruding backward from the groove.

【００１１】絶縁筒３Ｂの中間部やや後方には、角穴３
ｂが両側に形成され、絶縁筒３Ｂの後端には、環状の埋
金10が注型成形時に埋設され、この埋金10の前端には、
電界緩和部10ａが突設されている。埋金10の背面には、
円板状の端子板11がこの端子板11の外周側の背面に形成
された図示しない座ぐり穴から挿入されたボルトで埋金
10に固定されている。At the intermediate portion of the insulating tube 3B, a square hole 3 is provided slightly behind.
b is formed on both sides, and an annular filler metal 10 is buried at the rear end of the insulating cylinder 3B during casting.
An electric field relaxation portion 10a is provided in a protruding manner. On the back of buried 10,
A disk-shaped terminal plate 11 is filled with bolts inserted through counterbored holes (not shown) formed on the rear surface on the outer peripheral side of the terminal plate 11.
Fixed to 10.

【００１２】端子板11の前面側には、断面が略π字状の
接触子台11ａが形成されている。この接触子台11ａの筒
部の外周には、断面が弧状の溝が環状に形成され、この
溝の周りには、前述した接触子８Ａと同一品の接触子８
Ｂが前述した間隔板８ａを介して等間隔に配置されてい
る。各接触子８Ｂの対向側は、一対の加圧ばね９の復帰
力によって、接触子台11ａの溝部と断路棒６Ｃの後端の
外周に所定の圧力で押圧されている。On the front side of the terminal plate 11, a contact base 11a having a substantially π-shaped cross section is formed. An annular groove having an arc-shaped cross section is formed on the outer periphery of the cylindrical portion of the contact base 11a. Around the groove, a contact 8 of the same product as the contact 8A described above is formed.
B are arranged at regular intervals via the above-mentioned spacing plate 8a. The opposing side of each contact 8B is pressed with a predetermined pressure against the groove of the contact stand 11a and the outer periphery of the rear end of the disconnecting rod 6C by the restoring force of the pair of pressure springs 9.

【００１３】端子板11の背面には、隣接した主回路機器
に接続されるＬ字形の主回路導体12がボルトで締め付け
られた状態が示されている。図４（ａ），（ｂ）におい
て、断路棒６Ｃは、前側の操作部６ｂ１と後側の断路部
６ａと、これらの断路部６ａと操作部６ｂ１を接続し絶
縁固定する接続部18で構成されている。An L-shaped main circuit conductor 12 connected to an adjacent main circuit device is shown fastened by bolts on the back surface of the terminal plate 11. 4 (a) and 4 (b), the disconnecting rod 6C includes a front operating portion 6b1 and a rear disconnecting portion 6a, and a connecting portion 18 for connecting and disconnecting the disconnecting portion 6a and the operating portion 6b1 for insulation. Have been.

【００１４】このうち、接続部18は、エポキシ樹脂で製
作され、前後に埋金18ａ，18ｂがあらかじめ埋設されて
いる。これらの埋金18ａ，18ｂは、対向部が半球状に加
工され、円筒部の外周には、ローレット加工が施されて
いる。The connecting portion 18 is made of an epoxy resin, and burying metals 18a and 18b are buried before and after. The facing portions of these burials 18a and 18b are processed into a hemispherical shape, and the outer periphery of the cylindrical portion is knurled.

【００１５】一方、断路部６ａには、中間部に対して小
径部６ｄが形成され、この小径部６ｄの後部に主回路側
挿入部６ｃが形成され、小径部６ｄの前方に対して接地
側挿入部６ｅが形成されている。On the other hand, a small diameter portion 6d is formed in the disconnecting portion 6a with respect to the intermediate portion, and a main circuit side insertion portion 6c is formed at the rear of the small diameter portion 6d. An insertion portion 6e is formed.

【００１６】このうち、主回路側挿入部６ｃの後端の外
周は、弧状に面取り加工され、接地側挿入部６ｅの前端
には、おねじ部６ｆが突設され、このおねじ部６ｆが埋
金18ｂに螺合されることで、断路部６ａは接続部18に接
続されている。The outer periphery of the rear end of the main circuit side insertion portion 6c is chamfered in an arc shape, and a male screw portion 6f is projected from the front end of the ground side insertion portion 6e. The disconnecting portion 6a is connected to the connecting portion 18 by being screwed to the filling metal 18b.

【００１７】また、前方の操作部６ｂ１の後端にもおね
じ部６ｇが突設され、このおねじ部６ｇが接続部18の埋
金６ｇに螺合されることで、操作部６ｂ１も接続部18に
接続され固定される。An external thread 6g is also provided at the rear end of the front operation section 6b1. The external thread 6g is screwed into the filling metal 6g of the connection section 18, so that the operation section 6b1 is also connected. It is connected to the part 18 and fixed.

【００１８】操作部６ｂ１の前端は、角柱状の連結部６
ｊを形成し、この連結部６ｊの後端と接続部18の前端ま
での外周は、研磨加工されて、断路動作に伴うＹパッキ
ン15及びスクレーバ16との摺動によるこれらの内周面の
損傷を防いでいる。The front end of the operation section 6b1 is
j is formed, and the outer periphery from the rear end of the connecting portion 6j to the front end of the connecting portion 18 is polished so that the inner peripheral surface thereof is damaged by the sliding with the Y packing 15 and the scraper 16 due to the disconnection operation. Is preventing.

【００１９】このように構成された接地断路器において
は、この接地断路器の断路棒６Ｃを図３の矢印Ｂに示す
ように操作部によって駆動することにより、断路棒６Ｃ
の後端は、接触子８Ｂから断路される。この状態で、接
続部18の前端は、シールケース５の内部の逃げ部の底面
と僅かな間隙で対置する。このときの断路棒６Ｃの後端
の断路状態は、絶縁筒３Ｂの両側に形成された角穴３ｂ
から確認する。In the grounding disconnector constructed as described above, the disconnecting rod 6C of the grounding disconnector is driven by the operating section as shown by the arrow B in FIG.
Is disconnected from the contact 8B. In this state, the front end of the connecting portion 18 is opposed to the bottom surface of the escape portion inside the seal case 5 with a slight gap. The disconnecting state of the rear end of the disconnecting rod 6C at this time is determined by the square holes 3b formed on both sides of the insulating cylinder 3B.
Check from.

【００２０】一方、操作部６ｂ１は、この接地断路器の
後方の主回路導体20を介して接続される図示しない真空
遮断器が開極していることを条件に駆動され、そのた
め、この接地断路器と真空遮断器との間には、図示しな
い電気的，機械的インタロックが設けられて、接触子８
Ｂと断路棒６Ｃの後端における発弧が防がれている。On the other hand, the operation unit 6b1 is driven on condition that a vacuum circuit breaker (not shown) connected via the main circuit conductor 20 at the rear of the ground disconnecting switch is open. An electrical and mechanical interlock (not shown) is provided between the circuit breaker and the vacuum circuit breaker, and a contact 8 is provided.
Arcing at B and the rear end of the disconnecting rod 6C is prevented.

【００２１】[0021]

【発明が解決しようとする課題】ところで、都市の大形
ビルなどに設置される受電設備では、地価の高騰などに
よって、受電設備の占有面積の縮小化が要求され、これ
に対応するため、ガス絶縁金属閉鎖形スイッチギヤが採
用されている。In the case of power receiving equipment installed in large buildings in cities, etc., the occupied area of the power receiving equipment is required to be reduced due to a rise in land prices and the like. An insulated metal switchgear is employed.

【００２２】そのため、このガス絶縁金属閉鎖形スイッ
チギヤの箱体は、小形化され内部に組み込まれる真空遮
断器などもガス絶縁の特長を生かして小形化されてい
る。For this reason, the box body of the gas-insulated metal-closed switchgear is made smaller by taking advantage of the gas insulation characteristics of the vacuum circuit breaker and the like which are made smaller and incorporated therein.

【００２３】したがって、接地断路器においても更なる
小形化が要求され、箱体の奥行を減らすために、接地断
路器の奥行の更なる縮小が要求されている。Therefore, further reduction in the size of the grounding disconnector is required, and further reduction in the depth of the grounding disconnector is required in order to reduce the depth of the box.

【００２４】また、図４（ａ），（ｂ）に示した断路棒
では、三個の部品の締結結合によっているので、組立工
程が増えるだけでなく、締結トルクや螺合面の摩擦が万
一異なると、結合力がばらつくおそれがある。Further, in the disconnecting rod shown in FIGS. 4A and 4B, since the three parts are connected by fastening, not only the number of assembling steps is increased, but also the fastening torque and the friction of the threaded surface are reduced. If they are different, the bonding strength may vary.

【００２５】そこで、本発明の第１の目的は、ガス絶縁
金属閉鎖形スイッチギヤの設置面積を更に減らすことの
できる接地断路器を得ることであり、第２の目的は、組
立が容易で断路棒の連結の信頼性を更に上げることので
きる接地断路器を得ることである。Accordingly, a first object of the present invention is to provide a grounding disconnector which can further reduce the installation area of a gas insulated metal closed type switchgear, and a second object is to provide a disconnection which is easy to assemble and disconnects. An object of the present invention is to provide a grounding disconnector which can further improve the reliability of the connection of the rods.

【００２６】[0026]

【課題を解決するための手段】請求項１に対応する発明
は、取付板の片側から他側に貫設されこの他側の断路側
と片側の操作側が連結部で接続される断路棒と、取付板
の他側に設けられ断路棒の挿入によりこの断路棒の断路
側の先端が嵌合する第１の接触部と、この第１の接触部
の片側に設けられ断路棒の引き抜きによりこの断路棒の
先端が嵌合する第２の接触部を備えた接地断路器におい
て、断路側と操作側の対向部の片側から突出された凸部
と、断路側と操作側の対向側の他側に形成され絶縁層を
介して凸部が嵌合する凹部とで絶縁連結部を構成したこ
とを特徴とする。According to a first aspect of the present invention, there is provided a disconnecting rod extending from one side of the mounting plate to the other side, wherein the other disconnecting side and one operating side are connected by a connecting portion, A first contact portion provided on the other side of the mounting plate, to which a disconnect side end of the disconnect bar is fitted by insertion of the disconnect bar; and a disconnection bar provided on one side of the first contact portion by pulling out of the disconnect bar. In a grounding disconnector provided with a second contact portion to which the tip of a rod fits, a convex portion protruding from one side of a disconnecting side and an opposing portion on the operating side, and a convex portion protruding from one side of the disconnecting side and the opposing side on the operating side. An insulating connection portion is formed by the formed concave portion and the convex portion fitted through the insulating layer.

【００２７】また、特に、請求項２に対応する発明の接
地断路器は、凸部を円錐台状としたことを特徴とし、請
求項３に対応する発明の接地断路器は、凸部を大径の球
状部と小径で基端側の柱状部で構成したことを特徴とす
る。The grounding disconnector according to the second aspect of the invention is characterized in that the convex portion has a truncated cone shape, and the grounding disconnector according to the third aspect of the invention has a large convex portion. It is characterized by comprising a spherical portion having a small diameter and a columnar portion having a small diameter on the base end side.

【００２８】さらに、特に、請求項４に対応する発明の
接地断路器は、取付板の他側をガス絶縁としたことを特
徴とし、請求項５に対応する発明の接地断路器は、第２
の接触部を接地側としたことを特徴とする。このような
手段で本発明では、絶縁連結部の露部部の長さを減らし
て、断路棒の長さを短縮し、特に請求項２及び請求項３
においては引張強度を上げる。Furthermore, the grounding disconnector of the invention according to claim 4 is characterized in that the other side of the mounting plate is gas-insulated, and the grounding disconnector of the invention corresponding to claim 5 is the second invention.
Is characterized in that the contact portion is on the ground side. According to the present invention, the length of the exposed portion of the insulating connecting portion is reduced to shorten the length of the disconnecting rod.
In the above, the tensile strength is increased.

【００２９】[0029]

【発明の実施の形態】以下、本発明の接地断路器の一実
施形態を図面を参照して説明する。図１は、本発明の接
地断路器の第１の一実施形態を示す縦断面図で、従来の
技術で示した図３に対応する図、図２（ａ）は、図１で
示した接地断路器に組み込まれた断路棒６Ａを示す部分
拡大図で、従来の技術で示した図４（ｂ）に対応する図
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the grounding disconnector according to the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a first embodiment of a grounding disconnector according to the present invention, and is a view corresponding to FIG. 3 shown in the prior art, and FIG. 2 (a) is a grounding shown in FIG. FIG. 5 is a partially enlarged view showing a disconnecting rod 6A incorporated in a disconnector, and is a view corresponding to FIG. 4B shown in the related art.

【００３０】図１及び図２において、従来の技術で示し
た図３及び図４と異なるところは、絶縁連結部の形状
と、絶縁筒と断路棒が短くなっていることで、他は、図
３及び図４と同一である。FIGS. 1 and 2 are different from FIGS. 3 and 4 shown in the prior art in that the shape of the insulating connecting portion and the length of the insulating cylinder and the disconnecting rod are shorter. 3 and FIG.

【００３１】すなわち、図１及び図２（ａ）で示した断
路棒６Ａは、前後の操作部と断路部６ｂがエポキシ樹脂
の注型によって一体に製作されている。図２（ａ）に示
すように、断路部６ａの前端には、略逆円錐台状で先端
が円錐形の連結部６ｍが突設されている。このうち、逆
円錐台状の連結部の基端には、応力の集中を避けるため
に僅かな弧状部が形成され、連結部６ｍの先端の両側と
中央部にも、電界を緩和するために僅かに弧状に面取り
されている。That is, in the disconnecting rod 6A shown in FIGS. 1 and 2 (a), the front and rear operation parts and the disconnecting part 6b are integrally manufactured by casting epoxy resin. As shown in FIG. 2 (a), a connecting portion 6m having a substantially inverted truncated cone and a conical tip protrudes from the front end of the disconnecting portion 6a. Of these, a slight arc-shaped portion is formed at the base end of the inverted truncated conical connecting portion to avoid concentration of stress, and both sides and the central portion of the distal end of the connecting portion 6m are also formed to reduce the electric field. It is chamfered in a slightly arc shape.

【００３２】一方、操作部６ｂの後端の対向部には、断
路棒６Ａに形成された逆円錐台状の連結部６ｍと相似形
で直径が大きく深さの深い凹部があらかじめ形成され、
この凹部と連結部６ｍとの間には、エポキシ樹脂の注型
による絶縁層17Ａが形成されている。On the other hand, a concave portion having a diameter similar to that of the inverted truncated conical connecting portion 6m formed on the disconnecting rod 6A and having a large diameter and a large depth is formed in the opposite portion at the rear end of the operating portion 6b.
An insulating layer 17A is formed between the concave portion and the connecting portion 6m by casting an epoxy resin.

【００３３】このように構成された接地断路器において
は、連結部６ｍの外面に対して先端が僅かに大径となる
傾斜面が形成されているので、従来の技術で示した図４
（ａ），（ｂ）で採用された埋金18ａ，18ｂと異なり、
操作部６ｂと断路部６ａとの引張り方向の結合力を上げ
ることができる。In the grounding disconnector constructed as described above, an inclined surface whose tip has a slightly larger diameter is formed with respect to the outer surface of the connecting portion 6m.
Unlike the deposits 18a and 18b used in (a) and (b),
The connecting force in the pulling direction between the operation unit 6b and the disconnecting unit 6a can be increased.

【００３４】さらに、操作部６ｂと断路部６ａを結合す
る絶縁層17Ａは、外周に露出した部分を図４（ａ），
（ｂ）で示した接続部18の長さと比べて、大幅に短縮す
ることができ、この絶縁層17Ａの露出部分とＹパッキン
15との距離を維持して操作部６ｂの長さを短縮すること
ができるので、絶縁筒３Ａの長さを短縮することがで
き、この接地断路器の奥行きを減らすことができる。Further, the insulating layer 17A connecting the operating portion 6b and the disconnecting portion 6a has a portion exposed to the outer periphery as shown in FIG.
The length of the connecting portion 18 can be greatly reduced as compared with the length of the connecting portion 18 shown in FIG.
Since the length of the operation unit 6b can be reduced while maintaining the distance to the distance 15, the length of the insulating cylinder 3A can be reduced, and the depth of the grounding disconnector can be reduced.

【００３５】次に、図２（ｂ）は、本発明の接地断路器
の第２の実施形態を示す部分拡大詳細図で、第１の実施
形態で示した図２（ａ）に対応する図である。図２
（ｂ）において、第１の実施形態で示した図２（ａ）と
異なるところは、断路棒６ａの前端に形成された連結部
の形状で、鍵穴状の連結部６ｎとなっている。したがっ
て、この連結部６ｎと操作棒６ｈの後端との間に形成さ
れた絶縁層17Ｂも鍵穴状となっている。Next, FIG. 2 (b) is a partially enlarged detailed view showing a second embodiment of the grounding disconnector of the present invention, and corresponds to FIG. 2 (a) shown in the first embodiment. It is. FIG.
2B is different from FIG. 2A shown in the first embodiment in that the shape of the connecting portion formed at the front end of the disconnecting rod 6a is a keyhole-shaped connecting portion 6n. Therefore, the insulating layer 17B formed between the connecting portion 6n and the rear end of the operating rod 6h also has a keyhole shape.

【００３６】このように連結部６ｎが形成された接地断
路器においても、連結部６ｎの球状部分の背面によって
引張り方向の結合力を上げることができ、外周に露出し
た絶縁層17Ｂの厚さも減らすことができる。なお、前記
実施形態において、連結部に形成された凸部と凹部は、
位置を前後逆にしてもよい。Even in the grounding disconnector having the connecting portion 6n formed as described above, the back surface of the spherical portion of the connecting portion 6n can increase the coupling force in the tensile direction and reduce the thickness of the insulating layer 17B exposed on the outer periphery. be able to. In the above-described embodiment, the protrusions and recesses formed in the connecting portion are:
The position may be reversed.

【００３７】[0037]

【発明の効果】以上、請求項１に対応する発明によれ
ば、取付板の片側から他側に貫設されこの他側の断路側
と片側の操作側が連結部で接続される断路棒と、取付板
の他側に設けられ断路棒の挿入でこの断路棒の断路側の
先端が嵌合する第１の接触部と、この第１の接触部の片
側に設けられ断路棒の引き抜きでこの断路棒の先端が嵌
合する第２の接触部を備えた接地断路器において、断路
側と操作側の対向部の片側から突出された凸部と、断路
側と操作側の対向側の他側に形成され絶縁層を介して凸
部が嵌合する凹部とで絶縁連結部を構成することで、ま
た、特に、請求項２に対応する発明によれば、凸部を円
錐台状とし、請求項３に対応する発明によれば、凸部を
大径の球状部と小径で基端側の柱状部で構成すること
で、絶縁連結部の露部部の長さを減らして、断路棒の長
さを短縮し、特に請求項２及び請求項３においては引張
強度を上げたので、ガス絶縁金属閉鎖形スイッチギヤの
設置面積を更に減らすことができ、組立が容易で断路棒
の連結の信頼性を更に上げることのできる接地断路器を
得ることができる。As described above, according to the invention corresponding to claim 1, a disconnecting rod is provided penetrating from one side of the mounting plate to the other side, and the other disconnecting side and one operating side are connected by a connecting portion, A first contact portion provided on the other side of the mounting plate, to which a disconnecting rod end of the disconnecting rod is fitted by insertion of the disconnecting rod; and a disconnection bar provided on one side of the first contact portion by disconnection of the disconnecting rod. In a grounding disconnector provided with a second contact portion to which the tip of a rod fits, a convex portion protruding from one side of a disconnecting side and an opposing portion on the operating side, and a convex portion protruding from one side of the disconnecting side and the opposing side on the operating side. According to the invention corresponding to claim 2, in particular, according to the invention corresponding to claim 2, the convex portion has a truncated cone shape, by forming the insulating connection portion with the concave portion to which the convex portion is fitted via the insulating layer. According to the invention corresponding to the third aspect, by forming the convex portion with a large-diameter spherical portion and a small-diameter proximal column portion, the exposed portion of the insulating connection portion is formed. , The length of the disconnecting rod is reduced, and in particular, the tensile strength is increased in claims 2 and 3, so that the installation area of the gas insulated metal closed type switchgear can be further reduced, It is possible to obtain a grounding disconnector which is easy to assemble and can further improve the reliability of connection of the disconnecting rod.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の接地断路器の第１の実施形態を示す縦
断面図。FIG. 1 is a longitudinal sectional view showing a first embodiment of a grounding disconnector of the present invention.

【図２】（ａ）は、図１の部分拡大詳細図、（ｂ）は本
発明の接地断路器の第２の実施形態を示す部分拡大詳細
図。2 (a) is a partially enlarged detailed view of FIG. 1, and FIG. 2 (b) is a partially enlarged detailed view showing a second embodiment of the grounding disconnector of the present invention.

【図３】従来の接地断路器の一例を示す縦断面図。FIG. 3 is a longitudinal sectional view showing an example of a conventional grounding disconnector.

【図４】（ａ）は、図４の部分詳細図、（ｂ）は（ａ）
のＣ部拡大詳細図。4 (a) is a partial detailed view of FIG. 4, and FIG. 4 (b) is (a)
FIG.

【符号の説明】[Explanation of symbols]

１…フランジ、２…取付板、３Ａ…絶縁筒、４…絶縁
台、５…シールケース、６Ａ，６Ｂ…断路棒、７Ａ…接
地導体、７ａ…円筒部、８Ａ，８Ｂ…接触子、９…加圧
ばね、10…埋金、11…端子板、12…主回路導体、13…ボ
ルト、14…Ｏリング、15…Ｙパッキン、16…スクレー
バ、17Ａ，17Ｂ…絶縁層、19…仕切板。DESCRIPTION OF SYMBOLS 1 ... Flange, 2 ... Mounting plate, 3A ... Insulating cylinder, 4 ... Insulating stand, 5 ... Seal case, 6A, 6B ... Disconnect bar, 7A ... Grounding conductor, 7a ... Cylindrical part, 8A, 8B ... Contact, 9 ... Pressurizing spring, 10 embedded metal, 11 terminal board, 12 main circuit conductor, 13 bolt, 14 O-ring, 15 Y packing, 16 scraper, 17A, 17B insulating layer, 19 partition plate.

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 取付板の片側から他側に貫設されこの他
側の断路側と前記片側の操作側が絶縁連結部で接続され
る断路棒と、前記取付板の他側に設けられ前記断路棒の
挿入によりこの断路棒の前記断路側の先端が嵌合する第
１の接触部と、この第１の接触部の前記片側に設けられ
前記断路棒の引き抜きによりこの断路棒の先端が嵌合す
る第２の接触部を備えた接地断路器において、前記断路
側と前記操作側の対向部の片側から突出された凸部と、
前記断路側と前記操作側の対向側の他側に形成され絶縁
層を介して前記凸部が嵌合する凹部とで前記絶縁連結部
を構成したことを特徴とする接地断路器。1. A disconnecting rod provided through one side of the mounting plate to the other side, wherein the disconnecting side on the other side and the one operating side are connected by an insulating connecting portion, and the disconnection provided on the other side of the mounting plate. A first contact portion into which the disconnecting rod end of the disconnecting rod fits by insertion of a rod, and a disconnecting rod distal end provided on one side of the first contact portion is fitted by pulling out the disconnecting rod. In the grounding disconnector provided with the second contact portion to be, a convex portion protruding from one side of the disconnection side and the opposing portion on the operation side,
A grounding disconnector, wherein the disconnecting side and the concave portion formed on the other side opposite to the operation side and fitted with the convex portion via an insulating layer form the insulating connecting portion. 【請求項２】 前記凸部を円錐台状としたことを特徴と
する請求項１に記載の接地断路器。2. The grounding disconnector according to claim 1, wherein said convex portion has a truncated cone shape. 【請求項３】 前記凸部を大径の球状部と小径で基端側
の柱状部で構成したことを特徴とする請求項１に記載の
接地断路器。3. The grounding disconnector according to claim 1, wherein the convex portion comprises a large-diameter spherical portion and a small-diameter proximal column portion. 【請求項４】 前記取付板の他側をガス絶縁としたこと
を特徴とする請求項１乃至請求項３のいずれかに記載の
接地断路器。4. The grounding disconnector according to claim 1, wherein the other side of said mounting plate is gas-insulated. 【請求項５】 前記第２の接触部を接地側としたことを
特徴とする請求項１乃至請求項４のいずれかに記載の接
地断路器。5. The grounding disconnector according to claim 1, wherein said second contact portion is on a grounding side.