JPH07211170A - Bushing - Google Patents
BushingInfo
- Publication number
- JPH07211170A JPH07211170A JP1490294A JP1490294A JPH07211170A JP H07211170 A JPH07211170 A JP H07211170A JP 1490294 A JP1490294 A JP 1490294A JP 1490294 A JP1490294 A JP 1490294A JP H07211170 A JPH07211170 A JP H07211170A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- shield cylinder
- bushing
- metal
- pipe
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 28
- 239000004020 conductor Substances 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000005476 soldering Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
- Insulators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス絶縁機器の管路の
中間にスペーサとして設置されたり、ガス充填回路から
外部へ電路を導出するためのブッシングに関し、詳しく
は、中心導体と同心的に円筒状のシールド筒体を配置し
てモールド成形によりエポキシ樹脂を被覆して形成され
るブッシングに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bushing that is installed as a spacer in the middle of a pipeline of a gas-insulated device or leads an electric path from a gas filling circuit to the outside. The present invention relates to a bushing formed by arranging a cylindrical shield cylinder and coating an epoxy resin by molding.
【０００２】[0002]
【従来の技術】従来のブッシングは、図５、図６のよう
に構成されている。すなわち、中心導体１の周囲に金網
からなる円筒状のシールド筒体２を同軸上に配置した状
態でエポキシ樹脂３を注入し、硬化することによりブッ
シング４が形成される。シールド筒体２は図７、図８に
示すように、パイプからなる１対のリング５，６を両端
に溶接してその間を金網７により接続して円筒状に形成
される。さらに金網７の側面に線材またはパイプからな
る支持棒８が半径方向外方に接続され、その端部には取
り付け孔となる金属パイプ９が接続されて形成されたも
のである。これら均圧環リング５，６、金網７、支持棒
８および金属パイプ９は半田付けによりそれぞれ接続さ
れる。2. Description of the Related Art A conventional bushing is constructed as shown in FIGS. That is, the bushing 4 is formed by injecting and curing the epoxy resin 3 in a state where the cylindrical shield cylinder body 2 made of a wire mesh is coaxially arranged around the center conductor 1. As shown in FIGS. 7 and 8, the shield cylinder 2 is formed in a cylindrical shape by welding a pair of rings 5 and 6 made of pipes to both ends and connecting them with a wire net 7. Further, a support rod 8 made of a wire rod or a pipe is connected to the side surface of the wire net 7 in the radially outward direction, and a metal pipe 9 serving as a mounting hole is connected to the end of the support rod 8. The equalizing ring rings 5, 6, the wire net 7, the support rod 8 and the metal pipe 9 are connected by soldering.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述し
た従来のブッシング４では、金属パイプ９，９をして、
図示しない外部固定点へ支持させるため、その両者間の
寸法精度を厳密に出す必要性があると共に、モールド成
形の際、シールド筒体２に対して半田付けにより接続さ
れた支持棒８および金属パイプ９等が取付けられている
ため、中心導体１に対するシールド筒体２の位置を高精
度に保持することができないという問題があった。ま
た、このように、シールド筒体２の構成部品が多いため
加工および組み立て工程も多くなりしかもそれらが手作
業であるため製作コストが大きくなるという問題もあっ
た。また、モールド型内に当該シールド筒体を設置する
際、金属パイプ９，９間の寸法を一定値にセットする
時、両者間を数mm伸張するだけで半田付け部分が切れて
しまい、当該シールド筒体を不良品にしてしまうという
欠点があった。本発明は上記問題点を解決するためにな
されたもので、その目的とするところは、部品点数を削
減すると共に、組み立てが容易であってしかもシールド
筒体の位置精度にすぐれたブッシングを提供することに
ある。However, in the above-mentioned conventional bushing 4, the metal pipes 9 and 9 are replaced by
In order to support it at an external fixed point (not shown), it is necessary to strictly measure the dimensional accuracy between the two, and at the time of molding, the support rod 8 and the metal pipe connected to the shield tube body 2 by soldering. Since 9 and the like are attached, there is a problem that the position of the shield cylinder 2 with respect to the central conductor 1 cannot be maintained with high accuracy. Further, as described above, there are problems that the number of components of the shield tube body 2 is large, so that the number of processing and assembling steps is also large, and the manufacturing cost is increased because they are manual work. Further, when the shield cylinder is installed in the mold, when the dimension between the metal pipes 9 is set to a constant value, the soldered portion is broken by extending the distance between the pipes by a few mm, and the shield is cut off. There was a drawback that the cylinder was a defective product. The present invention has been made to solve the above problems, and an object thereof is to provide a bushing that reduces the number of parts, is easy to assemble, and has excellent positional accuracy of a shield cylinder. Especially.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、中心軸上に配置された中心導体と、中心
導体の周囲に同軸状に配置された円筒形のシールド筒体
と、中心導体およびシールド筒体をエポキシ樹脂により
被覆して形成された本体と、本体外周部に軸方向と垂直
に形成されたフランジ部と、フランジ部に形成された複
数の取り付け孔と、取り付け孔の内側に埋設された複数
の金属パイプと、一端が金属パイプに接続されるととも
に他端がシールド筒体に接続されたシールド支持部とを
備えたブッシングにおいて、金属製の線材またはパイプ
をコイルばね状に巻回してシールド筒体を形成するとと
もにその両端を外方に延長してシールド支持部として金
属パイプに接続したことを特徴とする。In order to achieve the above object, the present invention provides a central conductor arranged on a central axis and a cylindrical shield cylindrical body coaxially arranged around the central conductor. A main body formed by coating the central conductor and the shield cylinder with an epoxy resin, a flange portion formed on the outer peripheral portion of the main body perpendicular to the axial direction, a plurality of mounting holes formed in the flange portion, and mounting holes In a bushing provided with a plurality of metal pipes embedded inside a metal pipe and a shield support part having one end connected to the metal pipe and the other end connected to a shield cylinder, a metal wire rod or pipe is used as a coil spring. It is characterized in that it is wound in a circular shape to form a shield cylinder, and both ends thereof are extended outward and connected to a metal pipe as shield support portions.
【０００５】[0005]
【作用】本発明においては、シールド筒体が金属製の線
材またはパイプをコイルばね状に巻回して形成されると
ともに、その両端が外方に延長されて金属パイプに接続
されて支持されることにより、シールド筒体の両金属パ
イプ間からみて可撓性が生じる。それにより、成形前の
シールド筒体の位置調整が容易になるとともに、モール
ド成形時において、不良品とはならず、生産性を向上し
うる。In the present invention, the shield cylinder is formed by winding a wire or pipe made of metal in a coil spring shape, and both ends thereof are extended outward and supported by being connected to the metal pipe. As a result, flexibility is produced when viewed from between the metal pipes of the shield cylinder. This facilitates the position adjustment of the shield cylinder before molding, does not result in a defective product during molding, and can improve productivity.
【０００６】[0006]
【実施例】以下、図に沿って本発明の実施例を説明す
る。図１は本発明に係るブッシングの実施例の縦断面図
であり、図２は図１の側面図である。両図において、１
は中心軸上に配置された中心導体であり、その周囲にシ
ールド筒体１１が同軸上に保持され、絶縁体であるとこ
ろのエポキシ樹脂２３がモールド成形により注入されて
ブッシング１６が形成されている。Embodiments of the present invention will be described below with reference to the drawings. 1 is a vertical sectional view of an embodiment of a bushing according to the present invention, and FIG. 2 is a side view of FIG. 1 in both figures
Is a central conductor arranged on the central axis, the shield cylinder 11 is coaxially held around the central conductor, and the epoxy resin 23, which is an insulator, is injected by molding to form the bushing 16. .
【０００７】シールド筒体１１は、図３、図４に示され
るように、金属製の線材またはパイプをコイルばね状に
巻回して形成したものであり、その両端１２，１３を円
筒部の互いに反対側の側面の中間位置まで屈曲し、さら
に半径方向の外方に屈曲して、先端を金属パイプ１４，
１５に半田付けにより接続している。金属パイプ１４，
１５は、軸方向と平行であるとともに中心軸に対して互
いに反対の位置に位置している。As shown in FIGS. 3 and 4, the shield cylinder 11 is formed by winding a wire or pipe made of metal into a coil spring shape. Bend to an intermediate position on the opposite side face, and further bend outward in the radial direction, so that the tip of the metal pipe 14,
It is connected to 15 by soldering. Metal pipe 14,
Reference numerals 15 are parallel to the axial direction and are located at positions opposite to each other with respect to the central axis.
【０００８】また、図１、図２に示されるように、ブッ
シング１６の本体の軸方向ほぼ中間の外周部には軸方向
に対して垂直な面内に四角形をしたフランジ部１７が形
成されている。このフランジ部１７の四隅に取り付け孔
１８〜２１が形成され、そのうちの２個に金属パイプ１
４，１５が埋め込まれている。この取り付け孔１８〜２
１により、ブッシング１６が取り付け固定されるととも
に、金属パイプ１４，１５を介してシールド筒体１１が
外部のアース極に接続される。Further, as shown in FIGS. 1 and 2, a rectangular flange portion 17 is formed in a plane perpendicular to the axial direction on the outer peripheral portion of the body of the bushing 16 substantially in the axial direction. There is. Mounting holes 18 to 21 are formed at four corners of the flange portion 17, and the metal pipe 1 is attached to two of them.
4, 15 are embedded. This mounting hole 18-2
1, the bushing 16 is attached and fixed, and the shield cylinder 11 is connected to the external earth electrode via the metal pipes 14 and 15.
【０００９】このように実施例のシールド筒体１１は、
１本の金属製の線材またはパイプをコイルばね状に巻回
して形成されたため、図５〜図８に示した従来例に比べ
構成部品が少なくなるとともに半田付け箇所も少なくな
って加工および組み立てが簡単になり製作コストが低減
されるとともに、シールド筒体１１そのものに可撓性が
備わる。また、シールド筒体１１が外方に屈曲延長され
て金属パイプ１４，１５に半田付けされているため、金
属パイプ１４，１５間の寸法についても、シールド筒体
１１が単体である間は調整が可能である。As described above, the shield cylinder 11 of the embodiment is
Since it is formed by winding one metal wire or pipe in the shape of a coil spring, the number of components is reduced and the soldering points are reduced as compared with the conventional example shown in FIGS. The shield cylinder 11 itself has flexibility while being simple and reducing the manufacturing cost. Further, since the shield tube body 11 is bent and extended outward and soldered to the metal pipes 14 and 15, the size between the metal pipes 14 and 15 can be adjusted while the shield tube body 11 is a single body. It is possible.
【００１０】つまり、シールド筒体１１の加工の際に充
分な寸法精度が得られない場合でも、モールド成形用の
金型にセットするときに位置調整をすることで、成形後
の寸法を高精度にすることが可能となる。また、シール
ド筒体１１が金属製の線材またはパイプをコイルばね状
に巻回して形成されたため、その円筒部の両端がＲ形状
に形成され、従って均圧環の役割も果せるとともに、エ
ポキシ樹脂２３がコイルばねの各々の隙間に滲み込むた
め、シールド筒体との密着性が良好である。In other words, even if sufficient dimensional accuracy cannot be obtained when the shield cylinder 11 is processed, by adjusting the position when setting it in the mold for molding, the dimension after molding is highly accurate. It becomes possible to Further, since the shield tube body 11 is formed by winding a metal wire or pipe in the shape of a coil spring, both ends of the cylinder portion are formed into an R shape, and therefore, the role of a pressure equalizing ring can be achieved and the epoxy resin 23 can be formed. Since it penetrates into the gaps between the coil springs, it has good adhesion to the shield cylinder.
【００１１】[0011]
【発明の効果】以上述べたように本発明によれば、シー
ルド筒体がエポキシ樹脂により被覆される前は、シール
ド筒体に可撓性が生じるとともに、シールド筒体の位置
を変更・調整することが可能になる。それにより、高精
度で品質の良いシールド筒体が得られる。また、部品点
数も少ないので、シールド筒体の製作も容易になり、高
品質のブッシングが低コストで得られるようになる。As described above, according to the present invention, before the shield cylinder is covered with the epoxy resin, the shield cylinder has flexibility and the position of the shield cylinder is changed and adjusted. It will be possible. Thereby, a highly accurate and high-quality shield cylinder can be obtained. Moreover, since the number of parts is small, the shield cylinder can be easily manufactured, and a high-quality bushing can be obtained at low cost.
【図１】本発明の実施例の縦断面図である。FIG. 1 is a vertical sectional view of an embodiment of the present invention.
【図２】図１の側面図である。FIG. 2 is a side view of FIG.
【図３】図１のシールド筒体を単体で示した外観図であ
る。FIG. 3 is an external view showing the shield tube body of FIG. 1 as a single body.
【図４】図３の側面図である。FIG. 4 is a side view of FIG.
【図５】従来例の縦断面図である。FIG. 5 is a vertical sectional view of a conventional example.
【図６】図５の側面図である。FIG. 6 is a side view of FIG.
【図７】図５のシールド筒体を単体で示した外観図であ
る。7 is an external view showing the shield cylinder of FIG. 5 as a single body.
【図８】図７の側面図である。FIG. 8 is a side view of FIG. 7.
１ 中心導体 １１ シールド筒体 １２，１３ 両端 １４，１５ 金属パイプ １６ ブッシング １７ フランジ部 １８〜２１ 取り付け孔 ２３ エポキシ樹脂 DESCRIPTION OF SYMBOLS 1 Central conductor 11 Shield cylinder 12, 13 Both ends 14, 15 Metal pipe 16 Bushing 17 Flange part 18-21 Mounting hole 23 Epoxy resin
Claims (1)
筒体と、 中心導体およびシールド筒体をエポキシ樹脂により被覆
して形成された本体と、 本体外周部に軸方向と垂直に形成されたフランジ部と、 フランジ部に形成された複数の取り付け孔と、 取り付け孔の内側に埋設された複数の金属パイプと、 一端が金属パイプに接続されるとともに他端がシールド
筒体に接続されたシールド支持部と、 を備えたブッシングにおいて、 金属製の線材またはパイプをコイルばね状に巻回してシ
ールド筒体を形成するとともにその両端を外方に延長し
てシールド支持部として金属パイプに接続したことを特
徴とするブッシング。1. A central conductor arranged on a central axis, a cylindrical shield cylinder arranged coaxially around the central conductor, and a central conductor and a shield cylinder covered with an epoxy resin. Main body, a flange portion formed on the outer periphery of the main body perpendicular to the axial direction, a plurality of mounting holes formed in the flange portion, a plurality of metal pipes embedded inside the mounting holes, and a metal pipe at one end. In a bushing that includes a shield support part that is connected to, and the other end of which is connected to the shield cylinder, a metal wire or pipe is wound in a coil spring shape to form a shield cylinder and both ends of the shield are connected. A bushing that extends outward and is connected to a metal pipe as a shield support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01490294A JP3197138B2 (en) | 1994-01-13 | 1994-01-13 | Bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01490294A JP3197138B2 (en) | 1994-01-13 | 1994-01-13 | Bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07211170A true JPH07211170A (en) | 1995-08-11 |
| JP3197138B2 JP3197138B2 (en) | 2001-08-13 |
Family
ID=11873929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01490294A Expired - Lifetime JP3197138B2 (en) | 1994-01-13 | 1994-01-13 | Bushing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3197138B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101229631B1 (en) * | 2011-10-31 | 2013-02-04 | 김은희 | Magnetic shield style transformer |
| CN103531369A (en) * | 2013-10-25 | 2014-01-22 | 珠海许继电气有限公司 | Two-circuit cleat outgoing line terminal |
-
1994
- 1994-01-13 JP JP01490294A patent/JP3197138B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101229631B1 (en) * | 2011-10-31 | 2013-02-04 | 김은희 | Magnetic shield style transformer |
| CN103531369A (en) * | 2013-10-25 | 2014-01-22 | 珠海许继电气有限公司 | Two-circuit cleat outgoing line terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3197138B2 (en) | 2001-08-13 |
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