JP3080337B2 - Bushing insulation plug - Google Patents
Bushing insulation plugInfo
- Publication number
- JP3080337B2 JP3080337B2 JP04158564A JP15856492A JP3080337B2 JP 3080337 B2 JP3080337 B2 JP 3080337B2 JP 04158564 A JP04158564 A JP 04158564A JP 15856492 A JP15856492 A JP 15856492A JP 3080337 B2 JP3080337 B2 JP 3080337B2
- Authority
- JP
- Japan
- Prior art keywords
- bushing
- insulating plug
- cable
- fitting
- internal electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Insulating Bodies (AREA)
- Cable Accessories (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、高電圧機器とケーブル
とを接続するためのブッシングに装着されるブッシング
用絶縁栓に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating plug for a bushing mounted on a bushing for connecting a high-voltage device and a cable.
【０００２】[0002]
【従来の技術】高電圧機器に対しケーブルを着脱可能に
接続する場合、従来次のような構成が採用されていた。
図２に従来のケーブル接続用のブッシング縦断面図を示
す。図において、機器の内壁１に設けられた貫通孔２に
は、エポキシ樹脂等から成るブッシング３がボルト４に
よって固定されている。このブッシング３には、機器側
の内部電極５Ａとケーブル側の内部電極５Ｂとが埋め込
まれている。この内部電極５Ｂとブッシング３には、右
方向と下方向からケーブル終端を受け入れるための開口
が設けられている。2. Description of the Related Art When a cable is detachably connected to a high-voltage device, the following configuration has conventionally been adopted.
FIG. 2 shows a longitudinal sectional view of a conventional bushing for connecting a cable. In the figure, a bushing 3 made of epoxy resin or the like is fixed to a through hole 2 provided in an inner wall 1 of the device by a bolt 4. In this bushing 3, an internal electrode 5A on the device side and an internal electrode 5B on the cable side are embedded. The internal electrode 5B and the bushing 3 are provided with openings for receiving cable ends from the right and downward directions.
【０００３】図の下方には、ケーブル６の終端が固定さ
れ、ケーブル６の導体７はケーブル側の内部電極５Ｂに
対しチューリップコンタクト８を介して電気接続されて
いる。上記機器側の内部電極５Ａとケーブル側の内部電
極５Ｂとは互いに予め電気的に切り離されており、その
間を接続導体１１が連結して両者を電気接続している。
この接続導体１１は、ケーブル側の内部電極５Ｂにねじ
込まれた押え蓋１２によって位置決め固定されている。
また、ブッシング３の右側からは図示しない別のケーブ
ル終端が装着されるが、図の状態ではこのケーブル終端
の代わりに盲栓１３が挿入され、このブッシング３の開
口部を絶縁保護している。このようなブッシングは、図
に示した状態で、図の下側に配置されたケーブル６と図
の左側に配置された図示しない機器の内部回路との間を
電気接続する。[0003] In the lower part of the figure, the end of the cable 6 is fixed, and the conductor 7 of the cable 6 is electrically connected to the internal electrode 5B on the cable side via a tulip contact 8. The internal electrode 5A on the device side and the internal electrode 5B on the cable side are electrically disconnected from each other in advance, and a connection conductor 11 is connected between them to electrically connect them.
The connecting conductor 11 is positioned and fixed by a holding lid 12 screwed into the internal electrode 5B on the cable side.
Further, another cable terminal (not shown) is attached from the right side of the bushing 3, but in the state shown in the figure, a blind plug 13 is inserted instead of the cable terminal to insulate and protect the opening of the bushing 3. Such a bushing electrically connects the cable 6 arranged on the lower side of the figure and the internal circuit of a device (not shown) arranged on the left side of the figure in the state shown in the figure.
【０００４】一方、このようなブッシング組立後ケーブ
ル６を装着した際に、ブッシング３やケーブル６の終
端、或はケーブル６自身の電気的特性を試験するため
に、図の右側から盲栓１３を取り除いて、課電用のケー
ブルが装着される。この時、ケーブル側の内部電極５Ｂ
と機器側の内部電極５Ａとの間の電気的接続を切り離
し、機器側に高電圧が印加されないようにするため接続
導体１１を取り除き、ゴム等の絶縁体から成る絶縁栓１
５を同じ場所に嵌め込む。On the other hand, when the cable 6 is assembled after the bushing is assembled, the blind plug 13 is inserted from the right side of the figure to test the electrical characteristics of the bushing 3 or the end of the cable 6 or the cable 6 itself. Remove it and install the power application cable. At this time, the internal electrode 5B on the cable side
The electrical connection between the device and the internal electrode 5A on the device side is cut off, the connection conductor 11 is removed to prevent high voltage from being applied to the device side, and the insulating plug 1 made of an insulator such as rubber is used.
Insert 5 into the same place.
【０００５】図３にこのようなケーブル６の試験の際の
絶縁栓の作用説明図を示す。図３（ａ）に示すように、
ブッシング３に絶縁栓１５を装着して課電用のケーブル
１６から試験の対象となるケーブル６に高電圧を印加す
る場合、機器側の内部電極５Ａにはその高電圧は印加さ
れない。このような試験が終了した後は（ｂ）に示すよ
うに、絶縁栓１５の代わりに接続導体１１が装着され、
課電用のケーブル１６は取り外されて図２に示したと同
様の状態になる。これによって、ケーブル６と機器側の
内部電極５Ａとの間が電気接続される。通常はこのよう
な状態で使用されることになる。FIG. 3 is a diagram for explaining the operation of the insulating plug when such a cable 6 is tested. As shown in FIG.
When the insulating plug 15 is attached to the bushing 3 and a high voltage is applied from the cable 16 for power application to the cable 6 to be tested, the high voltage is not applied to the internal electrode 5A on the device side. After such a test is completed, the connection conductor 11 is attached instead of the insulating plug 15 as shown in FIG.
The power supply cable 16 is detached to be in a state similar to that shown in FIG. Thus, the cable 6 and the internal electrode 5A on the device side are electrically connected. Usually, it will be used in such a state.
【０００６】[0006]
【発明が解決しようとする課題】ところで、上記のよう
なブッシングにおいては、絶縁栓１５や接続導体１１を
試験の際に着脱する作業が必要となる。上記絶縁栓１５
は、ブッシング３の内部に存在する空隙部を塞ぎ、高い
絶縁性を示す特性が要求される。従って、ブッシングの
内壁面に対し所定の圧力で押し付けられ、また取り外し
の際には速やかに除去できる構成が要求される。しか
も、このようなブッシングの内部は汚れや傷を嫌うため
着脱の際の取扱い易さ等も要求される。本発明は以上の
点に着目してなされたもので、上記のようなブッシング
の内部に存在する空隙部を塞ぎ、優れた電気特性で且つ
着脱作業の容易なブッシング用絶縁栓を提供することを
目的とするものである。Incidentally, in the bushing as described above, it is necessary to attach and detach the insulating plug 15 and the connection conductor 11 during the test. The insulating plug 15
Is required to close the gap existing inside the bushing 3 and exhibit high insulating properties. Therefore, a structure is required which is pressed against the inner wall surface of the bushing at a predetermined pressure and can be quickly removed when the bushing is removed. In addition, since the inside of such a bushing is susceptible to dirt and scratches, the bushing is required to be easy to handle at the time of attachment and detachment. The present invention has been made by paying attention to the above points, and provides a bushing insulating plug which has excellent electrical characteristics and is easy to put on and take off, by closing a gap existing inside the bushing as described above. It is the purpose.
【０００７】[0007]
【課題を解決するための手段】本発明のブッシング用絶
縁栓は、ケーブル終端を受け入れるブッシング内に収容
され、分割された内部電極相互間に存在する空隙部に挿
入されて、前記分割された内部電極間を絶縁する絶縁栓
と、前記ブッシングのケーブル終端装着孔に向かって開
口する前記内部電極の貫通孔にねじ込まれ、前記絶縁栓
にその一端を接触させて、当該絶縁栓を押圧する押し金
具と、前記絶縁栓の前記押し金具と接触する部分に配置
され前記絶縁栓と一体化された遮蔽金具と、前記押し金
具の前記ねじ込み方向の回転を許容しつつ、前記遮蔽金
具と前記押し金具とを連結する連結部材とを備えたこと
を特徴とするものである。The insulating plug for a bushing of the present invention is housed in a bushing for receiving a cable end, and inserted into a gap existing between the divided internal electrodes to form the divided internal plug. An insulating plug that insulates between the electrodes, and a press fitting that is screwed into a through hole of the internal electrode that opens toward the cable terminal mounting hole of the bushing, one end of which contacts the insulating plug to press the insulating plug. And a shielding member arranged at a portion of the insulating plug that comes into contact with the pressing member, and a shielding member integrated with the insulating plug, and the shielding member and the pressing member, while allowing the pressing member to rotate in the screwing direction. And a connecting member for connecting the two.
【０００８】[0008]
【作用】このブッシング用絶縁栓は、分割された内部電
極間に存在する空隙部に挿入される絶縁栓と押し金具が
連結部材を介して一体化されている。押し金具は内部電
極の貫通孔にねじ込まれ、絶縁栓をブッシングの内壁に
対し所定の圧力で押圧する。この場合、連結部材が絶縁
栓と押し金具を緩く連結しているため、押し金具の回転
力が絶縁栓に伝わらない。絶縁栓の引き抜きの際には、
押し金具を引き抜けば絶縁栓も一体に引き抜かれる。こ
れにより、絶縁栓をブッシングの内壁面に押し付けるた
めの機構が一体化されて、装着や取扱い及び引き抜きが
容易になり電気特性も向上する。In the insulating plug for bushing, the insulating plug inserted into the gap existing between the divided internal electrodes and the pusher are integrated via a connecting member. The press fitting is screwed into the through hole of the internal electrode, and presses the insulating plug against the inner wall of the bushing with a predetermined pressure. In this case, since the connecting member loosely connects the insulating plug and the pressing member, the rotational force of the pressing member is not transmitted to the insulating plug. When pulling out the insulation plug,
If the pusher is pulled out, the insulating plug will be pulled out as well. As a result, a mechanism for pressing the insulating plug against the inner wall surface of the bushing is integrated, so that mounting, handling, and pulling out are facilitated, and electric characteristics are improved.
【０００９】[0009]
【実施例】以下、本発明を図の実施例を用いて詳細に説
明する。図１は、本発明のブッシング用絶縁栓を装着し
たブッシングの主要部縦断面図である。本発明のブッシ
ング用絶縁栓は、既に図２で説明したようなブッシング
に装着される。この図１はその主要部を示したもので、
ブッシング３の機器側の内部電極５Ａとケーブル側の内
部電極５Ｂとは空隙部２０の部分において互いに切り離
されている。この部分には両者を電気的に絶縁するため
に絶縁栓２１が装着される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a longitudinal sectional view of a main part of a bushing equipped with the bushing insulating plug of the present invention. The insulating plug for bushing of the present invention is mounted on the bushing as already described with reference to FIG. This Figure 1 shows the main part,
The internal electrode 5A on the device side of the bushing 3 and the internal electrode 5B on the cable side are separated from each other at the space 20. An insulating plug 21 is attached to this part to electrically insulate them.
【００１０】ケーブル側の内部電極５Ｂには、ケーブル
終端装着孔２２に向かって貫通孔２３が設けられてお
り、ここに、絶縁栓２１を押圧するための押し金具２４
がねじ込まれている。この押し金具２４の左側の端は、
ブッシング２１と一体化された遮蔽金具２６の背面に接
触している。また押し金具２４の貫通孔２４Ａにはボル
ト状の連結部材２７が挿入され、遮蔽金具２６にねじ込
まれている。これによって遮蔽金具２６と押し金具２４
とは互いに離れないように一体化される。なお、連結部
材２７は押し金具２４の貫通孔２４Ａに対し緩く嵌め込
まれているため、押し金具２４のねじ込み方向の回転即
ち、矢印２８方向の回転力は遮蔽金具２６に伝わらない
構成となっている。The internal electrode 5B on the cable side is provided with a through-hole 23 toward the cable end mounting hole 22. A through-hole 23 for pressing the insulating plug 21 is provided here.
Is screwed. The left end of the push fitting 24 is
It is in contact with the back surface of the shielding fitting 26 integrated with the bushing 21. A bolt-shaped connecting member 27 is inserted into the through hole 24 </ b> A of the press fitting 24 and screwed into the shielding fitting 26. Thereby, the shielding fitting 26 and the pushing fitting 24 are formed.
Are integrated so as not to be separated from each other. Since the connecting member 27 is loosely fitted into the through hole 24A of the pressing member 24, the rotation of the pressing member 24 in the screwing direction, that is, the rotational force in the direction of the arrow 28 is not transmitted to the shielding member 26. .
【００１１】図４に上記ブッシング用絶縁栓の分解図を
示す。図に示すように、ゴム等から成る絶縁栓２１と金
属から成る遮蔽金具２６とは予めモールド等によって一
体に組み立てられている。遮蔽金具２６は、小径部２６
Ａを有しており、これによって絶縁栓２１を押したり引
いたりした場合に、両者が分離しないような構成となっ
ている。また遮蔽金具２６の背面には、ねじ孔２６Ｂが
設けられており、ここに連結部材２７がねじ込まれる構
成となっている。FIG. 4 is an exploded view of the bushing insulating plug. As shown in the figure, the insulating plug 21 made of rubber or the like and the shielding fitting 26 made of metal are assembled in advance by a mold or the like. The shielding metal fitting 26 has a small diameter part 26.
A, so that when the insulating plug 21 is pushed or pulled, they are not separated from each other. In addition, a screw hole 26B is provided on the back surface of the shield fitting 26, and the connecting member 27 is screwed into the screw hole 26B.
【００１２】一方、押し金具２４には貫通孔２４Ａが設
けられておりここに連結部材２７が挿入されるが、この
他に、押し金具２４のねじ込みや引き抜きの際に利用さ
れる雌ねじ部２４Ｂやピン受け孔２４Ｃが等が設けられ
ている。押し金具２４の遮蔽金具２６と接触する側には
小径部２４Ｄが設けられ、その接触面積が小さくなるよ
う構成されている。これは、押し金具２４を回転させな
がら絶縁栓２１を押し、これをブッシング３の内壁面に
押し付けて行く場合に、ブッシング２１にその回転力が
できるだけ伝わらないようにするためである。絶縁栓２
１はブッシングの内壁面との間に所定の圧力で押し付け
られることにより所定の絶縁特性を得るが、これにねじ
り力等が加わるとその絶縁特性が悪くなるためである。On the other hand, the push fitting 24 is provided with a through hole 24A, into which the connecting member 27 is inserted. In addition, a female screw portion 24B used for screwing and pulling out the push fitting 24, A pin receiving hole 24C and the like are provided. A small-diameter portion 24D is provided on the side of the press fitting 24 that comes into contact with the shielding fitting 26, so that the contact area is reduced. This is to prevent the rotational force from being transmitted to the bushing 21 as much as possible when the insulating plug 21 is pressed while rotating the pusher 24 and pressed against the inner wall surface of the bushing 3. Insulation stopper 2
No. 1 obtains a predetermined insulation characteristic by being pressed against the inner wall surface of the bushing with a predetermined pressure, but the insulation characteristic deteriorates when a torsional force or the like is applied thereto.
【００１３】図５に本発明のブッシング用絶縁栓をブッ
シング３に装着した場合の全体図を示す。図のように、
ブッシング３は、左方に延びた機器側の内部電極５Ａと
右側及び下側からケーブル終端を受け入れるケーブル側
の内部電極５Ｂを有しており、両者の間に本発明のブッ
シング用絶縁栓が装着されている。絶縁栓２１はブッシ
ング３の内壁面に押し金具２４の力により押し付けら
れ、これらは予め連結部材２７によって連結一体化され
ている。このブッシング３のケーブル終端装着孔２２に
は課電用のケーブルが装着され、ケーブル終端装着孔３
１には試験の対象となるケーブルが装着される。FIG. 5 is an overall view showing the case where the insulating plug for bushing of the present invention is mounted on the bushing 3. As shown in FIG. As shown
The bushing 3 has a device-side internal electrode 5A extending to the left and a cable-side internal electrode 5B for receiving the cable end from the right side and the lower side. The bushing insulating plug of the present invention is mounted between the two. Have been. The insulating plug 21 is pressed against the inner wall surface of the bushing 3 by the force of the press fitting 24, and these are connected and integrated by a connecting member 27 in advance. A cable for power application is mounted in the cable terminal mounting hole 22 of the bushing 3.
1 is provided with a cable to be tested.
【００１４】次に、図６から図８を用いて、本発明のブ
ッシング用絶縁栓をブッシングに装着する場合の手順を
説明する。図６は、本発明のブッシング用絶縁栓の側面
図である。図に示すように、絶縁栓２１と押し金具２４
と遮蔽金具２６とは互いに連続一体化されている。図７
は、そのブッシング用絶縁栓の着脱の際に使用される工
具を示し、（ａ）は引き抜きシャフトの斜視図、（ｂ）
は締め付けシャフトの斜視図、（ｃ）は引き抜きシャフ
トを押し金具に装着した場合の主要部側面図、（ｄ）は
締め付けシャフトを押し金具に装着した場合の主要部側
面図である。Next, a procedure for mounting the bushing insulating plug of the present invention on the bushing will be described with reference to FIGS. FIG. 6 is a side view of the insulating plug for bushing of the present invention. As shown in FIG.
And the shielding fitting 26 are continuously integrated with each other. FIG.
Shows a tool used for attaching and detaching the bushing insulating plug, (a) is a perspective view of a drawing shaft, (b)
FIG. 3 is a perspective view of a tightening shaft, FIG. 3C is a side view of a main part when a pull-out shaft is mounted on a press fitting, and FIG. 3D is a side view of a main part when a tightening shaft is mounted on the press fitting.
【００１５】図に示すように、引き抜きシャフト３３
は、軸３３Ａの一端に取っ手３３Ｂを備え他端に雄ねじ
部３３Ｃを備えている。この取っ手３３Ｂは作業者が掴
む部分で、雄ねじ部３３Ｃは、図４において説明した押
し金具２４の雌ねじ部２４Ｂにねじ込まれる構成となっ
ている。即ち、この引き抜きシャフト３３を図の（ｃ）
に示すように押し金具２４の雌ねじ部２４Ｂにねじ込
み、絶縁栓２１を押し金具２４と共に引き抜くことがで
きる構成となっている。As shown in FIG.
Has a handle 33B at one end of the shaft 33A and a male screw portion 33C at the other end. The handle 33B is a portion to be gripped by an operator, and the male screw portion 33C is configured to be screwed into the female screw portion 24B of the press fitting 24 described with reference to FIG. That is, this drawn shaft 33 is connected to
As shown in (1), the insulating plug 21 can be pulled out together with the push fitting 24 by screwing it into the female screw portion 24B of the push fitting 24.
【００１６】一方、締め付けシャフト３４は、軸３４Ａ
の一端に取っ手３４Ｂを備え、他端に４本のピン３４Ｃ
を備えたものである。この締め付けシャフト３４のピン
３４Ｃは、図の（ｄ）に示すように、押し金具２４に設
けられたピン受け孔２４Ｃに挿入され、矢印３５方向に
締め付けシャフト３４を回転して、図１に示した内部電
極５Ｂの貫通孔２３に押し金具２４をねじ込むことがで
きる構成とされている。また押し金具２４を内部電極５
Ｂから取り外す際には、反対方向に締め付けシャフト３
４を回転させる。上記、締め付けシャフト３４と引き抜
きシャフト３３とは、何れも絶縁栓２１の装着及び引き
抜きの際に同時に使用することができる。即ち、締め付
けシャフト３４の軸３４Ａにはその中心に図示しない貫
通孔が設けられており、ここに丁度引き抜きシャフト３
３の軸３３Ａが挿入できるように構成されている。On the other hand, the fastening shaft 34 has a shaft 34A.
Is provided with a handle 34B at one end and four pins 34C at the other end.
It is provided with. The pin 34C of this tightening shaft 34 is inserted into a pin receiving hole 24C provided in the press fitting 24, as shown in FIG. 1D, and rotates the tightening shaft 34 in the direction of arrow 35, as shown in FIG. The press fitting 24 can be screwed into the through hole 23 of the internal electrode 5B. Further, the metal fitting 24 is connected to the internal electrode 5.
When removing from B, tighten the shaft 3 in the opposite direction.
Rotate 4. Both the tightening shaft 34 and the pull-out shaft 33 can be used simultaneously when the insulating plug 21 is attached and pulled out. That is, a through hole (not shown) is provided in the center of the shaft 34A of the tightening shaft 34, and the shaft 34A
It is configured such that the third shaft 33A can be inserted.
【００１７】従って、図８に示すように、絶縁栓２１の
着脱の際には予め締め付けシャフト３４を押し金具２４
の一端に装着し、更にその貫通孔に引き抜きシャフト３
３を挿入して一体化するようにしている。装着の際には
この図８に示したような状態で絶縁栓２１をブッシング
内の空隙部に挿入し、引き抜きシャフト３３によって位
置決めしながら締め付けシャフト３４を回転させて、押
し金具２４を内部電極の貫通孔にねじ込む。逆に絶縁栓
２１の取り外しの際には、やはり締め付けシャフト３４
を押し金具２４に装着し更に引き抜きシャフト３３を押
し金具２４にねじ込んだ状態で、締め付けシャフト３４
を装着時と逆方向に回転させて押し金具２４を内部電極
の貫通孔から取り外す。その後、引き抜きシャフト３３
を持って絶縁栓２１を引き抜く。このようにすれば絶縁
栓２１の着脱操作の際、押し金具２４をブッシングの内
部にぶつけたり落下させたりして傷を付けるような恐れ
もなく、作業が円滑に行われる。このような作業を行う
ためにも、上記のように絶縁栓２１と押し金具２４とを
一体化した構成がその効果を発揮する。Therefore, as shown in FIG. 8, when the insulating plug 21 is attached or detached, the tightening shaft 34 is previously pressed to the metal fitting 24.
At one end, and further withdraw the shaft 3 through its through hole.
3 is inserted and integrated. At the time of mounting, the insulating plug 21 is inserted into the space in the bushing in the state shown in FIG. Screw it into the through hole. Conversely, when removing the insulating plug 21, the tightening shaft 34
Is attached to the press fitting 24 and the pull-out shaft 33 is screwed into the press fitting 24, and the tightening shaft 34 is
Is rotated in the direction opposite to the mounting direction, and the press fitting 24 is removed from the through-hole of the internal electrode. After that, the extraction shaft 33
, And pull out the insulating plug 21. In this way, when the insulating plug 21 is attached and detached, the work is performed smoothly without the possibility that the metal fitting 24 is hit or dropped inside the bushing to cause damage. In order to perform such an operation, the configuration in which the insulating plug 21 and the press fitting 24 are integrated as described above exerts its effect.
【００１８】本発明は以上の実施例に限定されない。絶
縁栓の形状や構成、押し金具の形状、遮蔽金具の形状、
或は連結部材の構成等は、同様の機能を持つ各種の構成
に置き換えて差し支えない。また、連結部材は、遮蔽金
具と押し金具とを押し金具のねじ込み方向の回転を許容
する状態で両者を連結する構成であればどのようなもの
であっても差し支えない。The present invention is not limited to the above embodiment. The shape and configuration of the insulation plug, the shape of the press fitting, the shape of the shielding fitting,
Alternatively, the configuration and the like of the connecting member may be replaced with various configurations having similar functions. Further, the connecting member may be of any configuration as long as the shielding member and the pressing member are connected to each other in a state where rotation of the pressing member in the screwing direction is permitted.
【００１９】[0019]
【発明の効果】以上説明した本発明のブッシング用絶縁
栓は、ブッシング内部に設けられた分割された内部電極
相互間に存在する空隙部に挿入され、絶縁栓と押し金具
とが連結部材によって一体化され、押し金具の回転力が
絶縁栓に伝わらない構成としたため、ブッシングに対し
絶縁栓を装着する場合に絶縁栓が所定の圧力でブッシン
グ内壁面に押し付けられ、高い電気特性を示す。また、
ブッシングに対する着脱作業の際、絶縁栓や押し金具が
一体化されているために、その操作性が優れ、ブッシン
グを傷つけるような恐れがないといった効果を有する。The bushing insulating plug according to the present invention described above is inserted into the gap existing between the divided internal electrodes provided inside the bushing, and the insulating plug and the press fitting are integrated by a connecting member. Since the rotational force of the press fitting is not transmitted to the insulating plug, the insulating plug is pressed against the inner wall surface of the bushing at a predetermined pressure when the insulating plug is attached to the bushing, and exhibits high electrical characteristics. Also,
When the bushing is attached to or detached from the bushing, since the insulating plug and the pressing fitting are integrated, the operability is excellent and there is an effect that the bushing is not damaged.
【図１】本発明のブッシング用絶縁栓実施例を示すブッ
シングの主要部縦断面図である。FIG. 1 is a longitudinal sectional view of a main part of a bushing showing an embodiment of an insulating plug for a bushing of the present invention.
【図２】従来のブッシングの縦断面図である。FIG. 2 is a longitudinal sectional view of a conventional bushing.
【図３】従来のブッシングの絶縁栓の作用を示す図で、
（ａ）は絶縁栓を装着した場合の作用説明図、（ｂ）は
接続導体を装着した場合の作用説明図である。FIG. 3 is a view showing the operation of an insulating plug of a conventional bushing.
(A) is an operation explanatory diagram when an insulating plug is attached, and (b) is an operational explanatory diagram when a connection conductor is attached.
【図４】本発明のブッシング用絶縁栓の分解図である。FIG. 4 is an exploded view of the insulating plug for bushing of the present invention.
【図５】本発明のブッシング用絶縁栓をブッシングに装
着した場合のブッシング全体の縦断面図である。FIG. 5 is a longitudinal sectional view of the entire bushing when the bushing insulating plug of the present invention is mounted on the bushing.
【図６】本発明のブッシング用絶縁栓の外観側面図であ
る。FIG. 6 is an external side view of the insulating plug for bushing of the present invention.
【図７】本発明のブッシング用絶縁栓を着脱する工具の
説明図で、（ａ）は引き抜きシャフトの斜視図、（ｂ）
は締め付けシャフトの斜視図、（ｃ）は引き抜きシャフ
トと押し金具を連結した主要部側面図、（ｄ）は押し金
具と締め付けシャフトとを連結した主要部側面図であ
る。FIG. 7 is an explanatory view of a tool for attaching and detaching an insulating plug for a bushing according to the present invention, wherein (a) is a perspective view of a drawing shaft, and (b).
Fig. 3 is a perspective view of a tightening shaft, (c) is a side view of a main part in which a pull-out shaft and a press fitting are connected, and (d) is a side view of a main part in which the press fitting and the tightening shaft are connected.
【図８】引き抜きシャフトと締め付けシャフトの両方を
本発明のブッシング用絶縁栓に装着した場合の側面図で
ある。FIG. 8 is a side view when both the extraction shaft and the tightening shaft are mounted on the insulating plug for bushing of the present invention.
３ ブッシング ５Ａ、５Ｂ 内部電極 ２０ 空隙部 ２１ 絶縁栓 ２２ ケーブル終端装着孔 ２３ 貫通孔 ２４ 押し金具 ２６ 遮蔽金具 ２７ 連結部材 Reference Signs List 3 bushing 5A, 5B internal electrode 20 gap 21 insulating plug 22 cable end mounting hole 23 through hole 24 press fitting 26 shielding fitting 27 connecting member
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02G 15/00 - 15/196 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02G 15/00-15/196
Claims (1)
に収容され、分割された内部電極相互間に存在する空隙
部に挿入されて、前記分割された内部電極間を絶縁する
絶縁栓と、 前記ブッシングのケーブル終端装着孔に向かって開口す
る前記内部電極の貫通孔にねじ込まれ、前記絶縁栓にそ
の一端を接触させて、当該絶縁栓を押圧する押し金具
と、 前記絶縁栓の前記押し金具と接触する部分に配置され前
記絶縁栓と一体化された遮蔽金具と、 前記押し金具の前記ねじ込み方向の回転を許容しつつ、
前記遮蔽金具と前記押し金具とを連結する連結部材とを
備えたことを特徴とするブッシング用絶縁栓。1. An insulating plug that is housed in a bushing for receiving a cable end, is inserted into a gap existing between divided internal electrodes, and insulates between the divided internal electrodes, and a cable of the bushing. A press fitting which is screwed into a through-hole of the internal electrode which opens toward the terminal mounting hole, one end of which is brought into contact with the insulating plug to press the insulating plug, and a portion of the insulating plug which comes into contact with the pressing fitting. And a shielding bracket integrated with the insulating plug, and while allowing rotation of the pushing bracket in the screwing direction,
An insulating plug for a bushing, comprising: a connecting member that connects the shielding metal member and the pressing metal member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04158564A JP3080337B2 (en) | 1992-05-26 | 1992-05-26 | Bushing insulation plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04158564A JP3080337B2 (en) | 1992-05-26 | 1992-05-26 | Bushing insulation plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05328579A JPH05328579A (en) | 1993-12-10 |
| JP3080337B2 true JP3080337B2 (en) | 2000-08-28 |
Family
ID=15674458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04158564A Expired - Lifetime JP3080337B2 (en) | 1992-05-26 | 1992-05-26 | Bushing insulation plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3080337B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8438553B2 (en) | 2008-12-03 | 2013-05-07 | International Business Machines Corporation | Paralleling processing method, system and program |
-
1992
- 1992-05-26 JP JP04158564A patent/JP3080337B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8438553B2 (en) | 2008-12-03 | 2013-05-07 | International Business Machines Corporation | Paralleling processing method, system and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05328579A (en) | 1993-12-10 |
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