JP2019179660A - Intermediate insulator of box-shaped cutout and box-shaped cutout - Google Patents

Intermediate insulator of box-shaped cutout and box-shaped cutout Download PDF

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JP2019179660A
JP2019179660A JP2018067994A JP2018067994A JP2019179660A JP 2019179660 A JP2019179660 A JP 2019179660A JP 2018067994 A JP2018067994 A JP 2018067994A JP 2018067994 A JP2018067994 A JP 2018067994A JP 2019179660 A JP2019179660 A JP 2019179660A
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box
shaped cutout
intermediate insulator
insulating member
mounting
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JP6991916B2 (en
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小寺　克昌
Katsumasa Kodera
克昌 小寺
裕輔 福田
Yusuke Fukuda
裕輔 福田
教平 山森
Kyohei Yamamori
教平 山森
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Energy Support Corp
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Energy Support Corp
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Abstract

To provide an intermediate insulator of a box-shaped cutout capable of reducing the mass of the intermediate insulator, and the box-shaped cutout.SOLUTION: An intermediate insulator 20 of a box-shaped cutout 10 is attached to an attachment bolt 17 provided on a top surface 16 of the box-shaped cutout 10 and is also attached to an attachment metal fitting 2. The intermediate insulator 20 includes an insulation member 21 and a rod-like attachment member 22 penetrating the insulation member 21. The attachment bolt 17 is attached at the bottom end of the attachment member 22. The attachment metal fitting 2 is attached at the top end of the attachment member 22. The bottom surface of the insulation member 21 contacts with the top surface 16 of the box-shaped cutout 10.SELECTED DRAWING: Figure 2

Description

本発明は、箱形カットアウトの中間碍子及び箱形カットアウトに関する。   The present invention relates to an intermediate insulator for a box-shaped cutout and a box-shaped cutout.

過負荷電流や短絡電流、雷サージに対して変圧器を保護する箱形カットアウトが変圧器の一次側に設置されている（例えば、特許文献１参照）。
特許文献１に記載の箱形カットアウトは、中間碍子を介して支持されることにより絶縁距離を長くして絶縁性能を高めている。 A box-shaped cutout that protects the transformer against overload current, short-circuit current, and lightning surge is installed on the primary side of the transformer (see, for example, Patent Document 1).
The box-shaped cutout described in Patent Document 1 is supported via an intermediate insulator, thereby increasing the insulation distance and improving the insulation performance.

実公平６−３３６７１号公報Japanese Utility Model Publication No. 6-33671

ところで、図４に示すように、箱形カットアウト１０の中間碍子１２０は、上端が腕金取付金具１に取り付けられ、下端が取付金具２に取り付けられている。中間碍子１２０の上端部及び下端部に取付ボルト１２１が固定されている。箱形カットアウト１０は、取付ボルト１７を取付金具２に嵌挿し、取付ボルト１７をナット１８で固定することで取付金具２に取り付けられている。中間碍子１２０は、箱形カットアウト１０を支持するだけの強度を満たす質量となっている。このため、箱形カットアウトの中間碍子の質量の低減が求められている。   By the way, as shown in FIG. 4, the intermediate insulator 120 of the box-shaped cutout 10 has an upper end attached to the brace fitting 1 and a lower end attached to the attachment 2. Mounting bolts 121 are fixed to the upper end portion and the lower end portion of the intermediate insulator 120. The box-shaped cutout 10 is attached to the mounting bracket 2 by fitting the mounting bolt 17 into the mounting bracket 2 and fixing the mounting bolt 17 with a nut 18. The intermediate insulator 120 has a mass that satisfies the strength sufficient to support the box-shaped cutout 10. For this reason, reduction of the mass of the intermediate insulator of a box-shaped cutout is calculated | required.

本発明は、こうした実情に鑑みてなされたものであり、その目的は、中間碍子の質量を低減することのできる箱形カットアウトの中間碍子及び箱形カットアウトを提供することにある。   This invention is made | formed in view of such a situation, The objective is to provide the intermediate | middle insulator of a box-shaped cutout which can reduce the mass of an intermediate | middle insulator, and a box-shaped cutout.

上記課題を解決する箱形カットアウトの中間碍子は、箱形カットアウトの上面に設けられる取付ボルトに取り付けられるとともに、取付金具に取り付けられる中間碍子であって、絶縁部材と、前記絶縁部材を貫通する棒状の取付部材と、を備え、前記取付部材の一端に前記取付ボルトが取り付けられ、前記取付部材の他端に前記取付金具が取り付けられ、前記絶縁部材の下端面は、前記箱形カットアウトの上面と接触する。   An intermediate insulator of a box-shaped cutout that solves the above problem is an intermediate insulator that is attached to a mounting bolt provided on the upper surface of the box-shaped cutout and is attached to a mounting bracket, and penetrates the insulating member and the insulating member. A mounting member in the form of a rod, wherein the mounting bolt is mounted on one end of the mounting member, the mounting bracket is mounted on the other end of the mounting member, and the lower end surface of the insulating member has the box-shaped cutout In contact with the top surface.

上記構成によれば、取付部材により箱形カットアウトの取付ボルトに取り付けることができるため、絶縁部材に箱形カットアウトを保持する強度を持たせなくてもよい。よって、中間碍子の質量を低減することができる。また、絶縁部材の下端面と箱形カットアウトの上面とが接触することで、箱形カットアウトの取付ボルトが取付部材と絶縁部材とに覆われるため、箱形カットアウトの取付ボルトを絶縁することができる。   According to the said structure, since it can attach to the attachment bolt of a box-shaped cutout by an attachment member, it is not necessary to give the intensity | strength which hold | maintains a box-shaped cutout to an insulating member. Therefore, the mass of the intermediate insulator can be reduced. Moreover, since the lower end surface of the insulating member and the upper surface of the box-shaped cutout are in contact with each other, the mounting bolt of the box-shaped cutout is covered with the mounting member and the insulating member, so that the mounting bolt of the box-shaped cutout is insulated. be able to.

上記箱形カットアウトの中間碍子について、前記取付部材の軸方向と直交する方向に延出し、前記絶縁部材の外面に設置される平板を備えることが好ましい。
上記構成によれば、取付部材の軸方向と直交する方向における絶縁部材の外面の沿面距離を長くすることができ、中間碍子の絶縁性能を高めることができる。 About the intermediate insulator of the said box-shaped cutout, it is preferable to provide the flat plate extended in the direction orthogonal to the axial direction of the said attachment member, and installed in the outer surface of the said insulation member.
According to the said structure, the creeping distance of the outer surface of the insulating member in the direction orthogonal to the axial direction of an attachment member can be lengthened, and the insulation performance of an intermediate insulator can be improved.

上記課題を解決する箱形カットアウトは、上記の中間碍子を備え、前記中間碍子の前記取付部材は、前記取付ボルトに螺着されている。
上記構成によれば、取付部材により箱形カットアウトの取付ボルトに取り付けることができるため、絶縁部材に箱形カットアウトを保持する強度を持たせなくてもよい。よって、中間碍子の質量を低減することができる。また、中間碍子が箱形カットアウトの取付ボルトに予め取り付けられているので、中間碍子の取付部材を取付金具に取り付けるだけで、中間碍子と箱形カットアウトとを設置することができる。 A box-shaped cutout that solves the above problem includes the above-described intermediate lever, and the mounting member of the intermediate lever is screwed onto the mounting bolt.
According to the said structure, since it can attach to the attachment bolt of a box-shaped cutout by an attachment member, it is not necessary to give the intensity | strength which hold | maintains a box-shaped cutout to an insulating member. Therefore, the mass of the intermediate insulator can be reduced. Further, since the intermediate insulator is attached in advance to the mounting bolt of the box-shaped cutout, the intermediate insulator and the box-shaped cutout can be installed simply by attaching the intermediate insulator mounting member to the mounting bracket.

本発明によれば、中間碍子の質量を低減することができる。   According to the present invention, the mass of the intermediate insulator can be reduced.

箱形カットアウト及び中間碍子の一実施形態の概略構成を示す図。The figure which shows schematic structure of one Embodiment of a box-shaped cutout and an intermediate insulator. 同実施形態の箱形カットアウト及び中間碍子の概略構成を示す部分断面図。The fragmentary sectional view which shows schematic structure of the box-shaped cutout and intermediate insulator of the embodiment. 同実施形態の中間碍子の概略構成を示す断面図。Sectional drawing which shows schematic structure of the intermediate insulator of the embodiment. 従来の箱形カットアウト及び中間碍子を示す図。The figure which shows the conventional box-shaped cutout and an intermediate insulator.

以下、図１〜図３を参照して、箱形カットアウトの中間碍子及び箱形カットアウトの一実施形態について説明する。
図１に示すように、電柱等に固定される腕金取付金具１には、螺子３１とナット３２とによって取付金具２が固定されている。取付金具２は、Ｖ字状の金属板である。取付金具２の一端部には腕金取付金具１が固定され、取付金具２の他端部には中間碍子２０を介して箱形カットアウト１０が固定されている。 Hereinafter, with reference to FIGS. 1 to 3, an embodiment of a box-shaped cutout intermediate lever and a box-shaped cutout will be described.
As shown in FIG. 1, a mounting bracket 2 is fixed to a brace mounting bracket 1 fixed to a utility pole or the like by a screw 31 and a nut 32. The mounting bracket 2 is a V-shaped metal plate. An arm bracket mounting bracket 1 is fixed to one end of the mounting bracket 2, and a box-shaped cutout 10 is fixed to the other end of the mounting bracket 2 via an intermediate insulator 20.

箱形カットアウト１０は、磁器製であって、箱状の本体１１と、本体１１の開口部を閉じる蓋１２とを備えている。蓋１２は、ピン１３によって本体１１に対して回動可能に連結されている。本体１１の側面には、上部電線挿入孔１４と下部電線挿入孔１５とが設けられている。箱形カットアウト１０の内部には、図示しない内部電極が２個設けられている。上部電線挿入孔１４と下部電線挿入孔１５とから挿入された電線がそれぞれの内部電極に接続される。これら内部電極は、蓋１２に装着された図示しないヒューズ筒によって接続されている。このため、箱形カットアウト１０は、蓋１２の開閉により負荷開閉が行われる。   The box-shaped cutout 10 is made of porcelain and includes a box-shaped main body 11 and a lid 12 that closes an opening of the main body 11. The lid 12 is rotatably connected to the main body 11 by a pin 13. An upper wire insertion hole 14 and a lower wire insertion hole 15 are provided on the side surface of the main body 11. Two internal electrodes (not shown) are provided inside the box-shaped cutout 10. Electric wires inserted from the upper wire insertion hole 14 and the lower wire insertion hole 15 are connected to the respective internal electrodes. These internal electrodes are connected by a fuse cylinder (not shown) attached to the lid 12. For this reason, the box-shaped cutout 10 is opened and closed by opening and closing the lid 12.

図２に示すように、箱形カットアウト１０の上面１６には、取付ボルト１７が設けられている。箱形カットアウト１０の上面１６の略中央には、取付ボルト１７を固定する挿入孔１６Ａが設けられている。取付ボルト１７は、挿入孔１６Ａに挿入され、固着用合金を流し込むことで挿入孔１６Ａに固定されている。中間碍子２０は、箱形カットアウト１０の上面１６に設けられる取付ボルト１７に取り付けられるとともに、取付金具２に取り付けられている。   As shown in FIG. 2, mounting bolts 17 are provided on the upper surface 16 of the box-shaped cutout 10. An insertion hole 16 </ b> A for fixing the mounting bolt 17 is provided substantially at the center of the upper surface 16 of the box-shaped cutout 10. The mounting bolt 17 is inserted into the insertion hole 16A and fixed to the insertion hole 16A by pouring a fixing alloy. The intermediate insulator 20 is attached to the attachment bolt 17 provided on the upper surface 16 of the box-shaped cutout 10 and attached to the attachment fitting 2.

中間碍子２０は、外形が円筒状の絶縁部材２１を備えている。絶縁部材２１は、取付金具２と箱形カットアウト１０との沿面距離を確保する部材である。絶縁部材２１は、樹脂製であるため、磁器製と比較して軽量である。また、絶縁部材２１が樹脂製であるため、磁器製の箱形カットアウト１０との密着特性が磁器製と比較して高くなる。   The intermediate insulator 20 includes an insulating member 21 having a cylindrical outer shape. The insulating member 21 is a member that ensures a creepage distance between the mounting bracket 2 and the box-shaped cutout 10. Since the insulating member 21 is made of resin, it is lighter than that made of porcelain. Moreover, since the insulating member 21 is made of resin, the adhesion characteristics with the porcelain box-shaped cutout 10 are higher than those made of porcelain.

図３に示すように、絶縁部材２１の中央には、有底円筒状の凹部２１Ａが設けられている。凹部２１Ａの底部には、貫通孔２１Ｂが設けられている。絶縁部材２１は、凹部２１Ａの開口部から径方向に延出している。凹部２１Ａの周囲には、凹部２１Ａよりも径が大きく、且つ径の異なる円筒状の襞２１Ｃが３個設けられている。なお、襞２１Ｃの数は、３個に限らず、２個や４個以上であってもよい。襞２１Ｃは、箱形カットアウト１０側へ延出している。   As shown in FIG. 3, a bottomed cylindrical recess 21 </ b> A is provided at the center of the insulating member 21. A through hole 21B is provided at the bottom of the recess 21A. The insulating member 21 extends in the radial direction from the opening of the recess 21A. Around the recess 21A, three cylindrical ridges 21C having a diameter larger than that of the recess 21A and having different diameters are provided. The number of ridges 21C is not limited to three and may be two or four or more. The collar 21C extends to the box-shaped cutout 10 side.

中間碍子２０は、取付ボルト１７と取付金具２とに取り付けられる棒状の取付部材２２を備えている。取付部材２２は、金属製である。取付部材２２は、絶縁部材２１を貫通する。取付部材２２の一端である下端には、雌螺子２２Ａが形成されている。取付ボルト１７は、取付部材２２の下端の雌螺子２２Ａに螺着される。取付部材２２の他端である上端には、雌螺子２２Ｂが形成されている。ボルト２６が取付金具２に挿通されて、取付部材２２の上端の雌螺子２２Ｂに取り付けられる。なお、取付部材２２は、金属製に限らず、繊維強化プラスチック（ＦＲＰ）等の樹脂であってもよい。   The intermediate insulator 20 includes a rod-shaped attachment member 22 attached to the attachment bolt 17 and the attachment fitting 2. The attachment member 22 is made of metal. The attachment member 22 penetrates the insulating member 21. A female screw 22 </ b> A is formed at the lower end, which is one end of the mounting member 22. The mounting bolt 17 is screwed to the female screw 22 </ b> A at the lower end of the mounting member 22. A female screw 22 </ b> B is formed at the upper end, which is the other end of the attachment member 22. Bolts 26 are inserted into the mounting bracket 2 and attached to the female screw 22 </ b> B at the upper end of the mounting member 22. The attachment member 22 is not limited to metal and may be a resin such as fiber reinforced plastic (FRP).

取付部材２２の下端には、縮径した縮径部２２Ｃが設けられている。この縮径部２２Ｃが絶縁部材２１の貫通孔２１Ｂに嵌合している。絶縁部材２１の下端面２１Ｄと取付部材２２の下端面とは同一面となっている。   A reduced diameter portion 22 </ b> C having a reduced diameter is provided at the lower end of the attachment member 22. The reduced diameter portion 22 </ b> C is fitted in the through hole 21 </ b> B of the insulating member 21. The lower end surface 21D of the insulating member 21 and the lower end surface of the attachment member 22 are the same surface.

絶縁部材２１の下端面２１Ｄは、箱形カットアウト１０の上面１６と接触する。中間碍子２０は、絶縁部材２１と箱形カットアウト１０との間に設置されるシール部材２３を備えている。シール部材２３は、樹脂製の断面方形のパッキンである。シール部材２３は、箱形カットアウト１０の上面１６と絶縁部材２１の下端面２１Ｄとの間に設けられている（図２参照）。また、シール部材２３は、箱形カットアウト１０の上面１６と取付部材２２の下端面との間に設けられている（図２参照）。このため、箱形カットアウト１０の取付ボルト１７の周囲を密封して絶縁している。なお、シール部材２３の断面は、円形であってもよい。   A lower end surface 21 </ b> D of the insulating member 21 is in contact with the upper surface 16 of the box-shaped cutout 10. The intermediate insulator 20 includes a seal member 23 installed between the insulating member 21 and the box-shaped cutout 10. The seal member 23 is a packing made of resin having a square cross section. The seal member 23 is provided between the upper surface 16 of the box-shaped cutout 10 and the lower end surface 21D of the insulating member 21 (see FIG. 2). Further, the seal member 23 is provided between the upper surface 16 of the box-shaped cutout 10 and the lower end surface of the mounting member 22 (see FIG. 2). For this reason, the periphery of the mounting bolt 17 of the box-shaped cutout 10 is sealed and insulated. The cross section of the seal member 23 may be circular.

中間碍子２０は、取付部材２２の軸方向と直交する方向に延出する平板２４を備えている。平板２４は、絶縁部材２１の凹部２１Ａの外面２１Ｅに設置される。絶縁部材２１の凹部２１Ａの下端部には、縮径部２１Ｆが設けられている。平板２４は、絶縁部材２１の縮径部２１Ｆに係合し、凹部２１Ａの外面２１Ｅに接触している。平板２４は、絶縁部材２１の下端部とシール部材２３とを覆っている。   The intermediate insulator 20 includes a flat plate 24 that extends in a direction orthogonal to the axial direction of the mounting member 22. The flat plate 24 is installed on the outer surface 21E of the recess 21A of the insulating member 21. A reduced diameter portion 21 </ b> F is provided at the lower end portion of the recess 21 </ b> A of the insulating member 21. The flat plate 24 is engaged with the reduced diameter portion 21F of the insulating member 21 and is in contact with the outer surface 21E of the recess 21A. The flat plate 24 covers the lower end portion of the insulating member 21 and the seal member 23.

次に、図２を参照して、箱形カットアウト１０の中間碍子２０の取り付けについて説明する。
まず、中間碍子２０は、箱形カットアウト１０の取付ボルト１７に取り付けられる。すなわち、箱形カットアウト１０の取付ボルト１７に中間碍子２０の取付部材２２の下端部の雌螺子２２Ａを螺着することで、中間碍子２０が箱形カットアウト１０に固定される。このとき、中間碍子２０の絶縁部材２１と箱形カットアウト１０の上面との間は、シール部材２３によって密着される。なお、箱形カットアウト１０には、中間碍子２０を予め取り付けられていても、腕金取付金具１に取り付ける際に中間碍子２０を取り付けてもよい。なお、箱形カットアウト１０の取付ボルト１７は、従来ではナット１８によって取付金具２を固定した部材である（図４参照）。 Next, with reference to FIG. 2, attachment of the intermediate insulator 20 of the box-shaped cutout 10 will be described.
First, the intermediate insulator 20 is attached to the attachment bolt 17 of the box-shaped cutout 10. That is, the intermediate insulator 20 is fixed to the box-shaped cutout 10 by screwing the female screw 22 </ b> A at the lower end of the attachment member 22 of the intermediate insulator 20 to the attachment bolt 17 of the box-shaped cutout 10. At this time, the insulating member 21 of the intermediate insulator 20 and the upper surface of the box-shaped cutout 10 are closely attached by the seal member 23. The box-shaped cutout 10 may be attached with the intermediate lever 20 in advance, or may be mounted with the intermediate lever 20 when it is attached to the brace fitting 1. The mounting bolt 17 of the box-shaped cutout 10 is a member in which the mounting bracket 2 is conventionally fixed by a nut 18 (see FIG. 4).

次に、取付金具２を螺子３１とナット３２とによって腕金取付金具１に固定する。
次に、取付金具２にボルト２６を貫通し、中間碍子２０の取付部材２２の上端部の雌螺子２２Ｂに螺着することで、取付金具２に中間碍子２０を固定する。 Next, the mounting bracket 2 is fixed to the arm bracket mounting bracket 1 with the screw 31 and the nut 32.
Next, the bolts 26 are passed through the mounting bracket 2 and screwed into the female screws 22 </ b> B at the upper end of the mounting member 22 of the intermediate lever 20, thereby fixing the intermediate lever 20 to the mounting bracket 2.

次に、図１〜図３を参照して、上記のように構成された箱形カットアウト１０の中間碍子２０の作用について説明する。
箱形カットアウト１０の内部電極に電圧が発生したときには、箱形カットアウト１０の表面を漏洩電流が流れる。そして、箱形カットアウト１０の表面から平板２４の表面に流れ、平板２４から絶縁部材２１の表面及び襞２１Ｃに流れ、絶縁部材２１の表面から取付部材２２に流れ、取付部材２２から取付金具２に流れて腕金取付金具１に至る。このように箱形カットアウト１０から腕金取付金具１までの沿面距離が確保されているため、箱形カットアウト１０の内部電極に流れる漏洩電流が腕金取付金具１に到達する電流を抑制することができる。 Next, with reference to FIGS. 1-3, the effect | action of the intermediate insulator 20 of the box-shaped cutout 10 comprised as mentioned above is demonstrated.
When a voltage is generated at the internal electrode of the box-shaped cutout 10, a leakage current flows on the surface of the box-shaped cutout 10. And it flows from the surface of the box-shaped cutout 10 to the surface of the flat plate 24, flows from the flat plate 24 to the surface of the insulating member 21 and the flange 21C, flows from the surface of the insulating member 21 to the mounting member 22, and from the mounting member 22 to the mounting bracket 2 To the arm bracket mounting bracket 1. Since the creeping distance from the box-shaped cutout 10 to the arm bracket mounting bracket 1 is ensured in this way, the leakage current flowing through the internal electrode of the box-shaped cutout 10 is suppressed from reaching the arm bracket mounting bracket 1. be able to.

中間碍子２０の取付部材２２が取付金具２と箱形カットアウト１０とに取り付けられて、中間碍子２０が箱形カットアウト１０を支持している。このため、絶縁部材２１に箱形カットアウト１０を支持するための強度が不要となり、絶縁部材２１を樹脂製とすることが可能となった。よって、絶縁部材２１を軽量化することが可能となり、ひいては中間碍子２０の質量を低減することができる。   An attachment member 22 of the intermediate insulator 20 is attached to the attachment fitting 2 and the box-shaped cutout 10, and the intermediate insulator 20 supports the box-shaped cutout 10. For this reason, the strength for supporting the box-shaped cutout 10 on the insulating member 21 becomes unnecessary, and the insulating member 21 can be made of resin. Therefore, it is possible to reduce the weight of the insulating member 21, and thus the mass of the intermediate insulator 20 can be reduced.

以上説明したように、本実施形態によれば、以下の効果を奏することができる。
（１）取付部材２２により箱形カットアウト１０の取付ボルト１７に取り付けることができるため、絶縁部材２１に箱形カットアウト１０を保持する強度を持たせなくてもよい。よって、中間碍子２０の質量を低減することができる。 As described above, according to this embodiment, the following effects can be obtained.
(1) Since the attachment member 22 can be attached to the attachment bolt 17 of the box-shaped cutout 10, the insulating member 21 does not need to have the strength to hold the box-shaped cutout 10. Therefore, the mass of the intermediate insulator 20 can be reduced.

（２）絶縁部材２１の下端面と箱形カットアウト１０の上面とが接触することで、箱形カットアウト１０の取付ボルト１７が取付部材２２と絶縁部材２１とに覆われるため、箱形カットアウト１０の取付ボルト１７を絶縁することができる。   (2) Since the lower end surface of the insulating member 21 and the upper surface of the box-shaped cutout 10 are in contact with each other, the mounting bolts 17 of the box-shaped cutout 10 are covered with the mounting member 22 and the insulating member 21, so that the box-shaped cut The mounting bolt 17 of the out 10 can be insulated.

（３）絶縁部材２１に襞２１Ｃを設けたため、絶縁部材２１の沿面距離を長くすることができ、中間碍子２０の絶縁性能を高めることができる。
（４）中間碍子２０に平板２４を設けたため、取付部材２２の軸方向と直交する方向における絶縁部材２１の外面の沿面距離を長くすることができ、中間碍子２０の絶縁性能を高めることができる。 (3) Since the flange 21C is provided on the insulating member 21, the creeping distance of the insulating member 21 can be increased, and the insulating performance of the intermediate insulator 20 can be enhanced.
(4) Since the flat plate 24 is provided on the intermediate insulator 20, the creeping distance of the outer surface of the insulating member 21 in the direction orthogonal to the axial direction of the mounting member 22 can be increased, and the insulating performance of the intermediate insulator 20 can be enhanced. .

（５）シール部材２３によって絶縁部材２１と箱形カットアウト１０との間を密閉することで絶縁部材２１と箱形カットアウト１０との間を絶縁することができる。ひいては、絶縁部材２１を貫通する取付部材２２と箱形カットアウト１０との間を絶縁することができる。また、絶縁部材２１が弾性体でないときに、絶縁部材２１と箱形カットアウト１０との接触面との間にシール部材２３を設置して、絶縁部材２１と箱形カットアウト１０とで圧縮することで密閉して絶縁することができる。   (5) It is possible to insulate between the insulating member 21 and the box-shaped cutout 10 by sealing between the insulating member 21 and the box-shaped cutout 10 with the seal member 23. As a result, it is possible to insulate between the mounting member 22 penetrating the insulating member 21 and the box-shaped cutout 10. Further, when the insulating member 21 is not an elastic body, a sealing member 23 is installed between the insulating member 21 and the contact surface between the box-shaped cutout 10 and compressed by the insulating member 21 and the box-shaped cutout 10. Can be sealed and insulated.

（６）中間碍子２０が箱形カットアウト１０の取付ボルト１７に予め取り付けられていれば、中間碍子２０の取付部材２２を取付金具に取り付けるだけで、中間碍子２０と箱形カットアウト１０とを設置することができる。   (6) If the intermediate insulator 20 is attached to the mounting bolt 17 of the box-shaped cutout 10 in advance, the intermediate insulator 20 and the box-shaped cutout 10 can be connected only by attaching the attachment member 22 of the intermediate insulator 20 to the mounting bracket. Can be installed.

なお、上記実施形態は、これを適宜変更した以下の形態にて実施することもできる。
・上記構成において、シール部材２３を省略した構成を採用してもよい。
・上記構成において、平板２４を省略した構成を採用してもよい。 In addition, the said embodiment can also be implemented with the following forms which changed this suitably.
In the above configuration, a configuration in which the seal member 23 is omitted may be employed.
In the above configuration, a configuration in which the flat plate 24 is omitted may be adopted.

・上記実施形態では、絶縁部材２１に箱形カットアウト１０側へ延出する襞２１Ｃを設けたが、絶縁部材２１に軸方向と直交する方向へ延出する襞を設けてもよい。すなわち、絶縁部材２１の沿面距離を長くすることができる襞を絶縁部材２１に設ければよい。   In the above embodiment, the insulating member 21 is provided with the flange 21C extending to the box-shaped cutout 10 side, but the insulating member 21 may be provided with a flange extending in the direction orthogonal to the axial direction. That is, the insulating member 21 may be provided with a ridge that can increase the creeping distance of the insulating member 21.

・上記実施形態では、樹脂製の絶縁部材２１としたが、磁器製の絶縁部材２１としてもよい。このような場合であっても、取付部材２２が取付金具２と取付ボルト１７とに取り付けられるため、絶縁部材２１の強度を低減することができ、これに伴い絶縁部材２１の質量を低減することができる。   In the above embodiment, the insulating member 21 made of resin is used, but the insulating member 21 made of porcelain may be used. Even in such a case, since the attachment member 22 is attached to the attachment fitting 2 and the attachment bolt 17, the strength of the insulation member 21 can be reduced, and accordingly, the mass of the insulation member 21 can be reduced. Can do.

・上記実施形態では、絶縁部材２１をシール部材２３を介して箱形カットアウト１０の上面１６と接触させたが、取付ボルト１７を絶縁することができれば、絶縁部材２１が箱形カットアウト１０の上面１６と接触していなくてもよい。   In the above embodiment, the insulating member 21 is brought into contact with the upper surface 16 of the box-shaped cutout 10 via the seal member 23. However, if the mounting bolt 17 can be insulated, the insulating member 21 is It may not be in contact with the upper surface 16.

・上記実施形態では、取付金具２をＶ字状としたが、取付金具２をＬ字としてもよいし、取付金具２を９０度よりも大きい角度で折り曲げられた形状としてもよい。
・上記実施形態では、中間碍子２０を取付金具２を介して腕金取付金具１に取り付けたが、絶縁距離を確保できれば、取付金具２を腕金取付金具１に取り付けず、中間碍子２０を腕金取付金具１に直接取り付けてもよい。 In the above embodiment, the mounting bracket 2 is V-shaped, but the mounting bracket 2 may be L-shaped, or the mounting bracket 2 may be bent at an angle greater than 90 degrees.
In the above embodiment, the intermediate insulator 20 is attached to the arm bracket attachment bracket 1 via the attachment bracket 2. You may attach directly to the gold | metal fitting 1.

・上記構成において、中間碍子２０は、箱形カットアウト１０に取り付けた状態で箱形カットアウト１０とともに流通してもよいし、箱形カットアウト１０とは別体で単独で流通してもよい。例えば、図４に示した従来の中間碍子１２０を外して、取付金具２を腕金取付金具１に固定して、取付金具２と箱形カットアウト１０との間に中間碍子２０を設置してもよい。   In the above configuration, the intermediate insulator 20 may be distributed together with the box-shaped cutout 10 in a state of being attached to the box-shaped cutout 10, or may be distributed separately from the box-shaped cutout 10. . For example, the conventional intermediate lever 120 shown in FIG. 4 is removed, the mounting bracket 2 is fixed to the arm bracket mounting bracket 1, and the intermediate lever 20 is installed between the mounting bracket 2 and the box-shaped cutout 10. Also good.

次に、上記実施形態から把握できる技術的思想をその効果と共に記載する。
（イ）前記絶縁部材は、襞を備える箱形カットアウトの中間碍子。
上記構成によれば、絶縁部材の沿面距離を長くすることができ、中間碍子の絶縁性能を高めることができる。 Next, a technical idea that can be grasped from the above embodiment will be described together with its effects.
(A) The insulating member is a box-shaped cutout intermediate insulator provided with a flange.
According to the said structure, the creeping distance of an insulating member can be lengthened and the insulation performance of an intermediate insulator can be improved.

（ロ）前記絶縁部材と前記箱形カットアウトとの間に設けられるシール部材を備える箱形カットアウトの中間碍子。
上記構成によれば、シール部材によって絶縁部材と箱形カットアウトとの間を密閉することで絶縁部材と箱形カットアウトとの間を絶縁することができる。ひいては、絶縁部材を貫通する取付部材と箱形カットアウトとの間を絶縁することができる。また、絶縁部材が弾性体ではないときに、絶縁部材と箱形カットアウトとの間にシール部材を設置して、絶縁部材と箱形カットアウトとで圧縮することで密閉して絶縁することができる。 (B) An intermediate insulator of a box-shaped cutout provided with a seal member provided between the insulating member and the box-shaped cutout.
According to the said structure, between an insulation member and a box-shaped cutout can be insulated by sealing between an insulation member and a box-shaped cutout with a sealing member. As a result, it is possible to insulate between the mounting member penetrating the insulating member and the box-shaped cutout. In addition, when the insulating member is not an elastic body, a sealing member may be installed between the insulating member and the box-shaped cutout, and the insulating member and the box-shaped cutout may be compressed to be sealed and insulated. it can.

１…腕金取付金具、２…取付金具、１０…箱形カットアウト、１１…本体、１２…蓋、１３…ピン、１４…上部電線挿入孔、１５…下部電線挿入孔、１６…上面、１６Ａ…挿入孔、１７…取付ボルト、２０…中間碍子、２１…絶縁部材、２１Ａ…凹部、２１Ｂ…貫通孔、２１Ｃ…襞、２１Ｄ…下端面、２１Ｅ…外面、２１Ｆ…縮径部、２２…取付部材、２２Ａ…第１取付部、２２Ｂ…第２取付部、２２Ｃ…縮径部、２３…シール部材、２４…平板、２６…ボルト、３１…螺子、３２…ナット。   DESCRIPTION OF SYMBOLS 1 ... Arm bracket mounting bracket, 2 ... Mounting bracket, 10 ... Box-shaped cutout, 11 ... Main body, 12 ... Cover, 13 ... Pin, 14 ... Upper electric wire insertion hole, 15 ... Lower electric wire insertion hole, 16 ... Upper surface, 16A DESCRIPTION OF SYMBOLS ... Insertion hole, 17 ... Mounting bolt, 20 ... Intermediate insulator, 21 ... Insulating member, 21A ... Recess, 21B ... Through-hole, 21C ... Spear, 21D ... Lower end surface, 21E ... Outer surface, 21F ... Reduced diameter part, 22 ... Installation A member, 22A ... 1st attaching part, 22B ... 2nd attaching part, 22C ... Reduced diameter part, 23 ... Seal member, 24 ... Flat plate, 26 ... Bolt, 31 ... Screw, 32 ... Nut.

Claims (3)

箱形カットアウトの上面に設けられる取付ボルトに取り付けられるとともに、取付金具に取り付けられる中間碍子であって、
絶縁部材と、
前記絶縁部材を貫通する棒状の取付部材と、を備え、
前記取付部材の一端に前記取付ボルトが取り付けられ、前記取付部材の他端に前記取付金具が取り付けられ、
前記絶縁部材の下端面は、前記箱形カットアウトの上面と接触する
箱形カットアウトの中間碍子。 It is attached to the mounting bolt provided on the upper surface of the box-shaped cutout, and is an intermediate insulator attached to the mounting bracket,
An insulating member;
A rod-shaped mounting member penetrating the insulating member,
The mounting bolt is attached to one end of the mounting member, and the mounting bracket is attached to the other end of the mounting member,
The lower end surface of the insulating member is in contact with the upper surface of the box-shaped cutout. 前記取付部材の軸方向と直交する方向に延出し、前記絶縁部材の外面に設置される平板を備える
請求項１に記載の箱形カットアウトの中間碍子。 The intermediate insulator of the box-shaped cutout according to claim 1, further comprising a flat plate extending in a direction orthogonal to the axial direction of the mounting member and installed on an outer surface of the insulating member. 請求項１又は２に記載の箱形カットアウトの中間碍子を備え、
前記中間碍子の前記取付部材は、前記取付ボルトに螺着されている
箱形カットアウト。 The box-shaped cutout intermediate insulator according to claim 1 or 2,
The attachment member of the intermediate insulator is screwed to the attachment bolt. Box-shaped cutout.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116722468A (en) * 2023-08-10 2023-09-08 希格玛电气(珠海)有限公司 Multifunctional ring main unit operating handle and operating method

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JPS5479941U (en) * 1977-11-18 1979-06-06
JPH01267003A (en) * 1988-04-19 1989-10-24 Energy Support Corp Method of molding porcelain article and apparatus therefor
JPH0469839U (en) * 1990-10-29 1992-06-19
JPH05101767A (en) * 1991-08-09 1993-04-23 Ngk Insulators Ltd Anti-pollution type lightning cutout

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Publication number Priority date Publication date Assignee Title
JPS5479941U (en) * 1977-11-18 1979-06-06
JPH01267003A (en) * 1988-04-19 1989-10-24 Energy Support Corp Method of molding porcelain article and apparatus therefor
JPH0469839U (en) * 1990-10-29 1992-06-19
JPH05101767A (en) * 1991-08-09 1993-04-23 Ngk Insulators Ltd Anti-pollution type lightning cutout

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116722468A (en) * 2023-08-10 2023-09-08 希格玛电气(珠海)有限公司 Multifunctional ring main unit operating handle and operating method
CN116722468B (en) * 2023-08-10 2024-01-09 希格玛电气(珠海)有限公司 Multifunctional ring main unit operating handle and operating method

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