JP2610093B2 - Non-ceramic insulator and method for manufacturing the same - Google Patents
Non-ceramic insulator and method for manufacturing the sameInfo
- Publication number
- JP2610093B2 JP2610093B2 JP6666993A JP6666993A JP2610093B2 JP 2610093 B2 JP2610093 B2 JP 2610093B2 JP 6666993 A JP6666993 A JP 6666993A JP 6666993 A JP6666993 A JP 6666993A JP 2610093 B2 JP2610093 B2 JP 2610093B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- caulking
- gripping
- ceramic insulator
- metal
- 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
- Insulators (AREA)
- Insulating Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、繊維強化プラスチック
製（ＦＲＰ）の絶縁性樹脂等よりなるロッドを弾性絶縁
材料の外被により包被してなるノンセラミック碍子及び
その製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-ceramic insulator in which a rod made of an insulating resin or the like made of fiber reinforced plastic (FRP) is wrapped by a jacket made of an elastic insulating material, and a method of manufacturing the same. .
【０００２】[0002]
【従来の技術】従来より強化プラスチック製（ＦＲＰ）
のロッドにシリコーンゴムやエチレンプロピレンゴム
（ＥＰゴム）等の弾性絶縁材料よりなる外被を組み合わ
せた軽量、かつ高強度のノンセラミック碍子が使用され
ている。このノンセラミック碍子において、全長が短く
ても絶縁距離が十分確保できるようにするため、把持金
具をロッド両端に取着した後、把持金具のロッド寄りの
端部をも外被で包被したものがある。2. Description of the Related Art Conventionally made of reinforced plastic (FRP)
A lightweight and high-strength non-ceramic insulator is used in which a rod made of an elastic insulating material such as silicone rubber or ethylene propylene rubber (EP rubber) is combined with the rod. In this non-ceramic insulator, gripping brackets are attached to both ends of the rod so that the insulation distance can be sufficiently secured even if the overall length is short, and the rod-side end of the gripping bracket is also covered with a jacket. There is.
【０００３】[0003]
【発明が解決しようとする課題】このタイプのノンセラ
ミック碍子は、先に把持金具をロッド両端にかしめた後
に外被を高温加硫成形するため、成形の際にかしめ部が
熱履歴を受けることによってその把持力が低下してしま
う。そのため外被を成形した後、両把持金具をかしめる
構造に比べかしめ巾を大きくとる必要があった。In this type of non-ceramic insulator, the outer shell is subjected to high-temperature vulcanization molding after the clamping metal is first caulked to both ends of the rod. This reduces the gripping force. Therefore, after forming the outer cover, it is necessary to increase the swaging width as compared with the structure in which the gripping members are swaged.
【０００４】本発明は上記問題点を解消するためになさ
れたものである。即ち、その目的は把持金具をロッド両
端にかしめた後に外被をモールド成形するタイプのノン
セラミック碍子において加硫後の把持金具の把持力を向
上させたノンセラミック碍子及びその製造方法を提供す
ることにある。The present invention has been made to solve the above problems. That is, an object of the present invention is to provide a non-ceramic insulator in which the gripping force of a gripping metal after vulcanization is improved in a non-ceramic insulator of a type in which a jacket is molded after the gripping metal is caulked to both ends of a rod, and a method of manufacturing the same. It is in.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明では、絶縁性のロッドの両端に把持金具を嵌
着し、同ロッドと把持金具の一部を包被するように弾性
絶縁材料からなる外被をモールド成形してなるノンセラ
ミック碍子において、前記把持金具のかしめ部に対して
モールド成形前後においてそれぞれかしめを施したこと
を要旨とする。In order to achieve the above object, according to the present invention, gripping fittings are fitted to both ends of an insulating rod, and elastic rods are provided so as to cover a part of the rod and the gripping fitting. In a non-ceramic insulator obtained by molding a jacket made of an insulating material, a caulked portion of the grip metal is caulked before and after the molding.
【０００６】[0006]
【作用】上記の構成によれば、把持金具はかしめ部をま
ずモールド成形する前にかしめてあるため、把持金具は
モールド成形する際にロッドから抜け落ちない。そし
て、モールドの際に外被が把持金具とロッドの隙間に浸
入してくることがない。また、モールド後においても把
持金具はかしめ部をかしめてあるため加熱により一旦低
下した把持金具とロッドとの把持強度が再び保持され
る。According to the above construction, the gripping metal is caulked before the caulking portion is first molded, so that the gripping metal does not fall off the rod during the molding. Then, at the time of molding, the jacket does not enter the gap between the gripping metal and the rod. Further, even after the molding, the grip metal has swaged the caulked portion, so that the grip strength between the grip metal and the rod, which has been temporarily reduced by heating, is maintained again.
【０００７】[0007]
【実施例】以下、本発明のノンセラミック碍子及びその
製造方法の一実施例について図１〜図２に基づいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a non-ceramic insulator and a method for manufacturing the same according to the present invention will be described below with reference to FIGS.
【０００８】図２に示すように、ノンセラミック碍子１
のロッド２は外被５により外周が包被されており、両端
側には把持金具３が嵌着されている。ロッド２は断面円
形状の棒状体であり、軸方向に配列された繊維束、また
は織成あるいは編成された繊維束に、合成樹脂が含浸さ
れた繊維強化プラスチック（以下ＦＲＰという）により
構成されている。従って、ロッド２の引っ張り強度及び
強度対重量比は非常に大きいものとなっている。両把持
金具３は鋼材あるいはダグタイル鋳鉄等の金属が亜鉛メ
ッキ等されたものであり、Ｕ字状の取付部９と本体かし
め部６とにより形成されている。本体かしめ部６は円筒
形状であり、末端部には外方に立ち上がるフランジ部７
が形成されている。本体かしめ部６の内部の嵌合穴８に
はロッド２の端部が嵌合されている。本体かしめ部６に
はフランジ部７寄りから第１のかしめ１０ａと第２のか
しめ１０ｂがされており、両かしめ１０ａ，１０ｂは一
部重複されている。As shown in FIG. 2, the non-ceramic insulator 1
The outer circumference of the rod 2 is covered by a jacket 5, and gripping fittings 3 are fitted to both end sides. The rod 2 is a rod-shaped body having a circular cross section, and is made of a fiber bundle arranged in the axial direction or a woven or knitted fiber bundle made of fiber reinforced plastic (hereinafter referred to as FRP) in which synthetic resin is impregnated. I have. Therefore, the tensile strength and the strength-to-weight ratio of the rod 2 are very large. The two gripping members 3 are made of a metal such as steel or ductile cast iron and plated with zinc, and are formed by a U-shaped mounting portion 9 and a main body caulking portion 6. The body caulking portion 6 is cylindrical and has a flange portion 7 rising outward at the end portion.
Are formed. An end of the rod 2 is fitted into a fitting hole 8 inside the main body caulking portion 6. A first caulking 10a and a second caulking 10b are formed on the main body caulking portion 6 near the flange portion 7, and both caulkings 10a and 10b are partially overlapped.
【０００９】外被５はロッド２の両端側に把持金具３が
嵌着された状態で、ロッド２外周をシリコーンゴム又は
エチレンプロピレンゴム等の弾性絶縁材によりモールド
成形することにより形成されている。外被５は前記把持
金具３のフランジ部７まで覆っており、ロッド２は外被
５と把持金具３により完全に密封状態に包囲されてい
る。外被５には長手方向に沿って所定間隔で複数の絶縁
ひだ４が形成されており、表面漏れ距離を確保するよう
になっている。The outer cover 5 is formed by molding the outer periphery of the rod 2 with an elastic insulating material such as silicone rubber or ethylene propylene rubber in a state where the gripping fittings 3 are fitted to both ends of the rod 2. The outer cover 5 covers the flange portion 7 of the gripping metal 3, and the rod 2 is completely enclosed by the outer shell 5 and the gripping metal 3. A plurality of insulating folds 4 are formed on the outer cover 5 at predetermined intervals along the longitudinal direction so as to secure a surface leakage distance.
【００１０】次にこのようなノンセラミック碍子１の製
造方法について詳細に説明する。まず把持金具３をロッ
ド２の両端に嵌着し、図示しないダイスにより本体かし
め部６に対して、第１のかしめ１０ａを行う（図１）。
この第１のかしめ１０ａにより把持金具３はロッド２を
把持し、把持金具３のロッド２からの抜け落ちが防止さ
れる。Next, a method for manufacturing such a non-ceramic insulator 1 will be described in detail. First, the holding metal fittings 3 are fitted to both ends of the rod 2, and a first caulking 10 a is performed on the main body caulking portion 6 with a die (not shown) (FIG. 1).
The holding member 3 holds the rod 2 by the first caulking 10a, and the holding member 3 is prevented from falling off the rod 2.
【００１１】次いで外被５を成形するために、ロッド２
及び把持金具３のフランジ部７を図示しないキャビティ
ーに装填する。キャビティー温度が１３５度Ｃに達した
状態でシリコーンゴム又はエチレンプロピレンゴム等を
キャビティー内に充填し加熱により加硫して外被５を成
形する。成形時の加熱温度は１５０〜１８０度Ｃの間で
選択される。外被５が形成されたノンセラミック碍子１
の完成直前の半製品とされる。ロッド２はＦＲＰ製であ
るため一般的に外被５を形成するための加硫温度では熱
による塑性変形を生じ易い。従って、第１のかしめ１０
ａに基づくロッド２と把持金具３との間の面圧が低下す
る。Next, the rod 2 is formed in order to form the jacket 5.
Then, the flange 7 of the gripping metal 3 is loaded into a cavity (not shown). With the cavity temperature reaching 135 ° C., silicone rubber or ethylene propylene rubber or the like is filled in the cavity, and vulcanized by heating to form the jacket 5. The heating temperature during molding is selected between 150 and 180 ° C. Non-ceramic insulator 1 having a jacket 5
Is a semi-finished product just before completion. Since the rod 2 is made of FRP, plastic deformation due to heat is likely to occur at the vulcanization temperature for forming the jacket 5 in general. Therefore, the first swaging 10
The surface pressure between the rod 2 and the holding fitting 3 based on a is reduced.
【００１２】そこで、次の工程においてこの半製品のノ
ンセラミック碍子１に対して第２のかしめ１０ｂを行
う。第２のかしめ１０ｂの巾は本体かしめ部６の全かし
め巾の少なくとも５０パーセント以上が望ましい。Therefore, in the next step, the semi-finished non-ceramic insulator 1 is subjected to a second caulking 10b. The width of the second caulking 10b is desirably at least 50% or more of the entire caulking width of the main body caulking portion 6.
【００１３】本実施例においてこのような構成とすれ
ば、以下のような効果が生じる。 （１）第１のかしめ１０ａが加硫前に把持金具３のフラ
ンジ部７寄りで行われるため、加硫時に把持金具３とロ
ッド２の隙間に溶融状態のシリコーンゴム又はエチレン
プロピレンゴム等が浸入することがない。すなわち、こ
れらゴムが浸入すると把持金具３をロッド２に対する把
持力が低下してしまうが、そのおそれがなくなる。With this configuration in the present embodiment, the following effects are produced. (1) Since the first caulking 10a is performed near the flange portion 7 of the gripping metal 3 before vulcanization, molten silicone rubber or ethylene propylene rubber or the like enters the gap between the gripping metal 3 and the rod 2 during vulcanization. Never do. That is, when these rubbers penetrate, the gripping force of the gripping fixture 3 with respect to the rod 2 is reduced.
【００１４】（２）加硫後に第２のかしめ１０ｂを行う
ことにより全かしめ巾が加硫前に全かしめを行う方式に
比べ約８０パーセントに縮小できる。以上、本発明の実
施例について詳述したが、本発明は他の態様で実施する
ことも可能である。例えば上記実施例では第１のかしめ
１０ａと第２のかしめ１０ｂとを部分的に重複させてい
たが、本体かしめ部６の長さ又は径の変更があれば、そ
れに応じて重複部分を増減することも可能である。また
特に重複させる必要もない。(2) By performing the second caulking 10b after vulcanization, the entire caulking width can be reduced to about 80% as compared with the method of performing full caulking before vulcanization. Although the embodiments of the present invention have been described in detail, the present invention can be embodied in other modes. For example, in the above embodiment, the first caulking 10a and the second caulking 10b are partially overlapped, but if there is a change in the length or diameter of the main body caulking portion 6, the overlapping portion is increased or decreased accordingly. It is also possible. Also, there is no particular need to overlap.
【００１５】また、例えば第１のかしめ１０ａはかしめ
力を小さくして第２のかしめ１０ｂにて本体かしめ部６
を強くかしめるようにしてもよい。また、第１のかしめ
１０ａと第２のかしめ１０ｂによりかしめ得る面積は必
ずしも本体かしめ部６のほとんどである必要はない。そ
の他本発明は、その主旨を逸脱しない範囲で変更して実
施することは自由である。Also, for example, the first caulking 10a reduces the caulking force and the second caulking 10b forms
May be strongly swaged. Also, the area that can be caulked by the first caulking 10a and the second caulking 10b does not necessarily have to be almost all of the caulking portion 6 of the main body. In addition, the present invention can be freely modified and implemented without departing from the gist thereof.
【００１６】[0016]
【発明の効果】以上詳述したように、本発明では把持金
具のかしめ部をまずモールド成形する前にかしめてある
ため、把持金具はモールド成形する際にロッドから抜け
落ちることがなく、モールドの際に外被が把持金具とロ
ッドの隙間に浸入してくることがない。また、モールド
後においても把持金具はかしめ部をかしめてあるため加
熱により低下した把持金具とロッドとの把持強度が維持
される。As described in detail above, in the present invention, since the crimping portion of the gripping metal is caulked before molding, the gripping metal does not fall off from the rod during molding, and the gripping metal does not fall off during molding. In addition, the outer casing does not enter the gap between the holding bracket and the rod. Further, even after the molding, the grip metal has swaged the caulking portion, so that the grip strength between the grip metal and the rod, which has been reduced by heating, is maintained.
【図１】本発明にかかるノンセラミック碍子の製造途中
の半製品を説明する一部破断側断面図である。FIG. 1 is a partially cutaway side sectional view illustrating a semi-finished product during the manufacture of a non-ceramic insulator according to the present invention.
【図２】同じ実施例のノンセラミック碍子を説明する一
部破断側断面図である。FIG. 2 is a partially broken side sectional view illustrating a non-ceramic insulator of the same embodiment.
１…ノンセラミック碍子、２…ロッド、３…把持金具、
５…外被、６…かしめ部たる本体かしめ部、１０ａ，１
０ｂ…かしめ。1: Non-ceramic insulator, 2: Rod, 3: Holding bracket,
5 ... jacket, 6 ... body caulking part, caulking part, 10a, 1
0b ... Caulking.
Claims (3)
し、同ロッドと把持金具の一部を包被するように弾性絶
縁材料からなる外被をモールド成形してなるノンセラミ
ック碍子において、前記把持金具のかしめ部に対してモ
ールド成形前及びモールド成形後においてそれぞれかし
めを施したことを特徴とするノンセラミック碍子。1. A non-ceramic insulator in which gripping fittings are fitted to both ends of an insulating rod, and a jacket made of an elastic insulating material is molded so as to cover a part of the rod and the gripping fitting. A non-ceramic insulator, wherein a caulked portion of the gripping metal is caulked before and after molding.
びモールド成形後のかしめは互いにずれた位置になされ
ていることを特徴とする請求項１に記載のノンセラミッ
ク碍子。2. The non-ceramic insulator according to claim 1, wherein the caulking applied to the caulking portion before and after molding is performed at positions shifted from each other.
し、かしめ部をかしめた後、同ロッドと把持金具の一部
を含めて弾性絶縁材料からなる外被をモールドし、その
後再度前記かしめ部をかしめることを特徴とするノンセ
ラミック碍子の製造方法。3. A gripping fitting is fitted to both ends of an insulating rod, a caulking portion is caulked, and a jacket made of an elastic insulating material including the rod and a part of the gripping metal is molded. A method for manufacturing a non-ceramic insulator, comprising caulking the caulking portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6666993A JP2610093B2 (en) | 1993-03-25 | 1993-03-25 | Non-ceramic insulator and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6666993A JP2610093B2 (en) | 1993-03-25 | 1993-03-25 | Non-ceramic insulator and method for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06283060A JPH06283060A (en) | 1994-10-07 |
| JP2610093B2 true JP2610093B2 (en) | 1997-05-14 |
Family
ID=13322552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6666993A Expired - Lifetime JP2610093B2 (en) | 1993-03-25 | 1993-03-25 | Non-ceramic insulator and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2610093B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08185749A (en) * | 1994-12-28 | 1996-07-16 | Ngk Insulators Ltd | Manufacture of composite insulator with die |
| JP2820380B2 (en) * | 1995-02-21 | 1998-11-05 | 日本碍子株式会社 | Method for manufacturing polymer insulator |
| JP3421353B2 (en) | 1997-03-11 | 2003-06-30 | 日本碍子株式会社 | Manufacturing method of composite insulator and packing member used therefor |
| JP2001338544A (en) * | 2000-05-31 | 2001-12-07 | Daito Co Ltd | Method for manufacturing polymer insulator, polymer insulator and die |
| JP4601791B2 (en) * | 2000-09-14 | 2010-12-22 | 株式会社ダイヘン | Resin bushing |
-
1993
- 1993-03-25 JP JP6666993A patent/JP2610093B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06283060A (en) | 1994-10-07 |
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