JP3231250B2 - Polymer insulator - Google Patents
Polymer insulatorInfo
- Publication number
- JP3231250B2 JP3231250B2 JP26605096A JP26605096A JP3231250B2 JP 3231250 B2 JP3231250 B2 JP 3231250B2 JP 26605096 A JP26605096 A JP 26605096A JP 26605096 A JP26605096 A JP 26605096A JP 3231250 B2 JP3231250 B2 JP 3231250B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- tapered hole
- polymer insulator
- mounting bracket
- peripheral surface
- 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 - Fee Related
Links
Landscapes
- Insulators (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリマ碍子に係
り、特に、引張荷重および曲げモーメントが加わった場
合においても緩みがでないポリマ碍子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polymer insulator, and more particularly, to a polymer insulator which does not loosen even when a tensile load and a bending moment are applied.
【０００２】[0002]
【従来の技術】従来から絶縁体としての傘状の外皮を樹
脂により製せられたロッドに固着し、このロッドの両端
に金属により製せられた取付金具を装着したポリマ碍子
が知られている。2. Description of the Related Art Conventionally, there has been known a polymer insulator in which an umbrella-shaped outer shell as an insulator is fixed to a rod made of resin, and metal fittings are attached to both ends of the rod. .
【０００３】図５は従来のポリマ碍子１におけるロッド
２と取付金具３との取付部の構造を示すものであり、従
来のポリマ碍子１においては、ロッド２の端部が取付金
具３の一端に形成した離型処理した内広がりのテーパー
穴４に装着されている。そして、ロッド２の外周面とテ
ーパー穴４の内周面との間には、ロッド２とのみ一体的
に接合する接合部材５が充填されてロッド２の端部と接
合することによって形成された抜け止め６が形成されて
いる。実際には、固化前の軟らかい接合部材５をテーパ
ー穴４の底面４ａ上に投入し、その後ロッド２を底面４
ａに向けて押し込んで、接合部材５をロッド２とテーパ
ー穴４の内周面との間にくさび形となるようにして押し
広げて充填して行き、その後接合部材５をロッド２の外
周面のみに接合するように固化させて抜け止め６が形成
される。その後、さらに、ロッド２と取付金具３とを相
互に離間する方向に付勢される最大使用荷重より大きい
耐引張荷重が図５矢印Ｐ方向に予め付与されており、前
記テーパー穴４の底面４ａには、耐引張荷重によりロッ
ド２が図５矢印Ｐ方向に移動して生じた空隙７が形成さ
れている。FIG. 5 shows a structure of a mounting portion of a conventional polymer insulator 1 between a rod 2 and a mounting bracket 3. In the conventional polymer insulator 1, the end of the rod 2 is connected to one end of the mounting bracket 3. It is mounted in the formed tapered hole 4 which has been subjected to mold release processing. The gap between the outer peripheral surface of the rod 2 and the inner peripheral surface of the tapered hole 4 is formed by filling a joining member 5 that is integrally joined only with the rod 2 and joining with the end of the rod 2. A retainer 6 is formed. Actually, the soft joining member 5 before solidification is put on the bottom surface 4a of the tapered hole 4, and then the rod 2 is attached to the bottom surface 4a.
a, and the joint member 5 is expanded and filled in a wedge shape between the rod 2 and the inner peripheral surface of the tapered hole 4 to fill the joint member 5. The retainer 6 is solidified so as to be bonded only to form the stopper 6. Thereafter, a tensile load greater than the maximum working load that is urged in a direction to separate the rod 2 and the mounting bracket 3 from each other is applied in advance in the direction of arrow P in FIG. In FIG. 5, there is formed a gap 7 generated by the rod 2 moving in the direction of arrow P in FIG. 5 due to the tensile load.
【０００４】このような従来のポリマ碍子１は、引張荷
重のみが加わる懸垂用や引留め用に用いられており、使
用時にポリマ碍子１に引張荷重が加わった場合には、抜
け止め６がくさびとなってロッド２が取付金具３から抜
けるのを防止することができるようになっている。[0004] Such a conventional polymer insulator 1 is used for suspension or detention where only a tensile load is applied. When a tensile load is applied to the polymer insulator 1 during use, the retaining 6 is wedge-shaped. As a result, the rod 2 can be prevented from coming off from the mounting bracket 3.
【０００５】ところで、従来のポリマ碍子１において
は、引張荷重のみが加わる懸垂用や引留め用に用いる場
合には何ら問題はないが、引張荷重だけでなく曲げモー
メントが主として加わるポスト碍子や長幹碍子に用いる
と、曲げモーメントが図５破線両方向矢印Ｍにて示す方
向に繰り返し加わることにより、ロッド２が図５矢印Ｐ
方向と逆方向に戻り、取付金具３のテーパー穴４の内周
面と接合部材５によって形成された抜け止め６の外周面
との間に遊びと称される隙間が生じることになる。そし
て、隙間が生じると、取付金具３のテーパー穴４の開口
縁とロッド２の外周面との接触部を支持点とする曲げモ
ーメントによるロッド２の揺れが大きくなって、テーパ
ー穴４の内周面と抜け止め６の外周面とが摺動するばか
りでなく、少なくとも抜け止め６の外周面がテーパー穴
４の底面４ａ側から次第に摩耗して緩みが生じ、最後に
はロッド２が取付金具３から抜け出して分離してしまう
という問題点があった。In the conventional polymer insulator 1, there is no problem when it is used for suspension or holding, in which only a tensile load is applied. When used for an insulator, the bending moment is repeatedly applied in the direction indicated by the dashed double-headed arrow M in FIG.
Returning in the opposite direction, a gap called play is created between the inner peripheral surface of the tapered hole 4 of the mounting bracket 3 and the outer peripheral surface of the retaining member 6 formed by the joining member 5. When a gap is formed, the rod 2 sways due to a bending moment having a contact point between the opening edge of the tapered hole 4 of the mounting bracket 3 and the outer peripheral surface of the rod 2 as a support point, and the inner periphery of the tapered hole 4 is increased. Not only does the surface slide with the outer peripheral surface of the retainer 6, but also at least the outer peripheral surface of the retainer 6 gradually wears from the bottom surface 4 a side of the tapered hole 4 and becomes loose. There is a problem that the user gets out of the device and separates.
【０００６】そこで、このような問題点に対処するため
に、例えば、実開平５−２３２０号公報には、図６に示
すような取付金具３のテーパー穴４の底面４ａに、ロッ
ド２の外径寸法よりも０．２から１．５ｍｍ大きく、か
つ、ロッド２と取付金具３との間に最大使用荷重より大
きい引張荷重を加えた場合にロッド２が移動する距離よ
りも大きい深さＣを有する穴８を設けたポリマ碍子１Ａ
が提案されている。また、このポリマ碍子１Ａにおいて
は、前記のようにして最大使用荷重より大きい耐引張荷
重を加えた後には、接合部材５の下端とテーパー穴４の
底面４ａとの間およびロッドの下端と穴８の底面８ａと
の間にそれぞれ空隙７が形成されている。In order to deal with such a problem, for example, Japanese Utility Model Laid-Open No. Hei 5-2320 discloses that the outer surface of the rod 2 is attached to the bottom surface 4a of the tapered hole 4 of the mounting bracket 3 as shown in FIG. A depth C greater than the diameter by 0.2 to 1.5 mm and greater than the distance the rod 2 moves when a tensile load greater than the maximum working load is applied between the rod 2 and the mounting bracket 3. Insulator 1A provided with holes 8 having
Has been proposed. Further, in this polymer insulator 1A, after a tensile load greater than the maximum working load is applied as described above, the gap between the lower end of the joining member 5 and the bottom surface 4a of the tapered hole 4 and the lower end of the rod and the hole 8 And a bottom surface 8a of each of them.
【０００７】このような取付金具３のテーパー穴４の底
面４ａに穴８を設けたポリマ碍子１Ａによれば、ロッド
２が前述した逆方向に戻った場合のロッド２に加わる曲
げモーメントを、取付金具３のテーパー穴４の開口縁と
ロッド２の外周面との接触部からなる支持点に加え、ロ
ッド２の端部の外周面と取付金具３のテーパー穴４の底
面４ａに設けられた穴８の内周面との接触部からなる支
持点とで支持する、すなわち、間隔を隔てて２点支持す
ることにより、曲げモーメントが繰り返し加わってロッ
ド２が逆方向に戻った場合に生じる抜け止め６の摩耗を
防止して緩みが生じるのを防止することができるように
なっている。According to the polymer insulator 1A in which the hole 8 is provided in the bottom surface 4a of the tapered hole 4 of the mounting bracket 3, the bending moment applied to the rod 2 when the rod 2 returns in the above-described reverse direction is mounted. In addition to the support points formed by the contact portions between the opening edge of the tapered hole 4 of the metal fitting 3 and the outer peripheral surface of the rod 2, holes provided on the outer peripheral surface of the end of the rod 2 and the bottom surface 4a of the tapered hole 4 of the mounting metal 3. 8 is supported at a support point formed of a contact portion with the inner peripheral surface of the rod 8, that is, by supporting at two points with an interval therebetween, a retaining member generated when the bending moment is repeatedly applied and the rod 2 returns in the opposite direction. 6 can be prevented from being loosened.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、前述し
た従来の取付金具３のテーパー穴４の底面４ａに穴８を
設けたポリマ碍子１Ａにおいては、ロッド２を取付金具
３に装着する際に、穴８の内部に位置する固化前の接合
部材５を、ロッド２の外周面と穴８の内周面とにより形
成される狭い隙間からテーパー穴４内へ押し出すことに
なり、高い圧入荷重を必要とするとともに、穴８の底面
８ａとロッド２の端面との間に接合部材５および空気の
少なくとも一方が溜まり、ロッド２の端面を穴８の底面
８ａに確実に当接させることができない、すなわち、軸
方向の位置決めを上手く行うことができずにロッド２の
端面に対する穴８の底面８ａの位置精度を高精度に保持
することができないという問題点があった。However, in the aforementioned polymer insulator 1A in which the hole 8 is provided in the bottom surface 4a of the tapered hole 4 of the conventional mounting bracket 3, when the rod 2 is attached to the mounting bracket 3, 8 is pushed out from the narrow gap formed by the outer peripheral surface of the rod 2 and the inner peripheral surface of the hole 8 into the tapered hole 4, which requires a high press-fit load. At the same time, at least one of the joining member 5 and air accumulates between the bottom surface 8a of the hole 8 and the end surface of the rod 2, and the end surface of the rod 2 cannot reliably contact the bottom surface 8a of the hole 8, ie, There has been a problem that the positioning in the axial direction cannot be performed well, and the positional accuracy of the bottom surface 8a of the hole 8 with respect to the end surface of the rod 2 cannot be maintained with high accuracy.
【０００９】このロッド２の端面に対する穴８の底面８
ａの位置精度を高精度に保持することができないという
ことは、最大使用荷重より大きい耐引張荷重を加えた際
のロッド２の移動する距離が製品によって異なることに
なり、その結果、ポリマ碍子１Ａの長さのバラツキが大
きくなり、寸法精度に優れた高品質のものを安定して得
ることができないという問題点があった。The bottom surface 8 of the hole 8 with respect to the end surface of the rod 2
The inability to maintain the position accuracy of a with high accuracy means that the distance the rod 2 moves when a tensile load larger than the maximum working load is applied differs depending on the product. As a result, the polymer insulator 1A However, there has been a problem that the variation in length has become large and a high-quality product having excellent dimensional accuracy cannot be stably obtained.
【００１０】また、取付金具３のテーパー穴４の底面４
ａに設ける穴８の深さＣは、ロッド２と取付金具３との
間に最大使用荷重より大きい引張荷重を加えた場合にロ
ッド２が移動する距離よりも大きくされている、すなわ
ち、テーパー穴４の底面４ａに深い穴８が形成されてい
るので、くさび効果を得る抜け止め６を同一とした場合
にはこの穴８の深さＣに応じて取付金具３の全体の長さ
が大きくなり、その結果、ポリマ碍子１Ａの長さが長く
なってしまうという問題点があった。The bottom surface 4 of the tapered hole 4 of the mounting bracket 3
The depth C of the hole 8 provided in a is larger than the distance that the rod 2 moves when a tensile load larger than the maximum use load is applied between the rod 2 and the mounting bracket 3, that is, the tapered hole. Since the deep hole 8 is formed in the bottom surface 4a of the mounting member 4, when the retaining member 6 for obtaining the wedge effect is the same, the entire length of the mounting bracket 3 increases according to the depth C of the hole 8. As a result, there is a problem that the length of the polymer insulator 1A becomes long.
【００１１】本発明はこれらの点に鑑みてなされたもの
であり、曲げモーメントが加わる場合においても緩むこ
となく、長さを長くすることなく、寸法精度に優れた高
品質のポリマ碍子を提供することを目的とする。The present invention has been made in view of these points, and provides a high-quality polymer insulator excellent in dimensional accuracy without loosening even when a bending moment is applied, without increasing the length. The purpose is to:
【００１２】[0012]
【課題を解決するための手段】前述した目的を達成する
ため特許請求の範囲の請求項１に記載の本発明のポリマ
碍子の特徴は、傘状の外皮を外周面に具備するロッド
と、このロッドの両端にそれぞれ装着され前記ロッドの
端部が嵌合可能な離型処理した内広がりのテーパー穴を
具備する取付金具と、前記テーパー穴とロッドとの間に
充填され前記ロッドの端部と接合し、前記ロッドを前記
取付金具に支持可能な接合部材により形成された抜け止
めとを有するポリマ碍子において、前記取付金具のテー
パー穴の底面に、前記ロッドの端部の外周面が嵌合可能
とされ、かつ、前記ロッドと前記取付金具とを相互に離
間する方向に付勢する最大使用荷重より大きい耐引張荷
重が加わった際の前記ロッドが移動する距離よりも大き
い高さの支持突起を形成するとともに、この支持突起に
前記テーパー穴の底面の中心部と外周部とを連通する少
なくとも１つの連通路を形成した点にある。In order to achieve the above-mentioned object, a polymer insulator according to the present invention described in claim 1 is characterized in that a rod having an umbrella-shaped outer skin on an outer peripheral surface is provided. A mounting fitting having a tapered hole that is mounted on each end of the rod and that has a mold-removed inwardly protruding part that can be fitted with the end of the rod; and an end of the rod that is filled between the tapered hole and the rod. joined, before Symbol retaining formed by the support severable joint member to the mounting bracket rod
In polymer insulator having a fit, on the bottom surface of the tapered hole of the mounting bracket, the outer peripheral surface of the end portion of the rod can be fitted
And the rod and the mounting bracket are separated from each other.
Tension load greater than the maximum working load that is urged in the opposite direction
Larger than the distance the rod moves when weight is applied
To form a support projections have a height, lies in the formation of the at least one communication passage for communicating the central portion of the bottom surface and the outer peripheral portion of the tapered hole in this support projection.
【００１３】そして、このような構成を採用したことに
より、連通路は、ロッドを取付金具に装着する際に、ロ
ッドの端面に位置する固化前の接合部材を、テーパー穴
の内周面側に向かって容易に押し出すことができるの
で、圧入荷重の増加を防止するとともに、ロッドの端面
をテーパー穴の底面に確実に当接させることができる。
すなわち、軸方向の位置決めを上手く行うことができ、
ロッドの端面に対するテーパー穴の底面の位置精度を高
精度に保持することができ、その結果、製品毎の最大使
用荷重より大きい耐引張荷重を加えた際のロッドの移動
する距離を均一化することができ、寸法精度に優れた高
品質のものを安定して得ることができる。さらに、支持
突起によって、曲げモーメントが繰り返し加わってロッ
ドが逆に戻った場合に生じる緩みを確実に防止すること
ができる。しかも、支持突起は、テーパー穴の底面から
突設されているので、テーパー穴の底面に穴を掘る従来
例に比較して本発明の取付金具の軸方向全体の長さを短
くすることができる。[0013] By adopting such a configuration, when the rod is mounted on the mounting bracket, the communication path allows the joint member before solidification located on the end face of the rod to be attached to the inner peripheral surface side of the tapered hole. Since it can be easily pushed out, it is possible to prevent the press-fitting load from increasing and to ensure that the end face of the rod abuts against the bottom face of the tapered hole.
That is, the positioning in the axial direction can be performed well,
The positional accuracy of the bottom surface of the tapered hole relative to the end face of the rod can be held with high accuracy, as a result, uniform the travel distance of the rod upon the addition of a maximum use have greater than the load traction load for each product It is possible to stably obtain high-quality products having excellent dimensional accuracy. Furthermore, the support protrusion can reliably prevent the rod from returning when the bending moment is repeatedly applied and the rod returns. In addition, since the support projection is provided to project from the bottom surface of the tapered hole, the entire length of the mounting bracket of the present invention in the axial direction can be shortened as compared with a conventional example in which a hole is formed in the bottom surface of the tapered hole. .
【００１４】[0014]
【００１５】[0015]
【００１６】[0016]
【発明の実施の形態】以下、本発明を図面に示す実施の
形態により説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.
【００１７】図１から図３は本発明に係るポリマ碍子の
実施の形態の要部の構造を示すものであり、図１は正面
図であり、図２はロッドと取付金具との取付部近傍を示
す一部切断拡大図であり、図３はテーパー穴の底面を示
す拡大平面図である。1 to 3 show the structure of a main part of an embodiment of a polymer insulator according to the present invention. FIG. 1 is a front view, and FIG. 2 is a vicinity of a mounting portion between a rod and a mounting bracket. FIG. 3 is an enlarged plan view showing the bottom surface of the tapered hole.
【００１８】本実施の形態のポリマ碍子１１は、図１に
示すように、絶縁性を有するゴムなどにより形成された
傘状の外皮１２を外周面に具備するＦＲＰなどの樹脂に
より製せられた円柱状のロッド１３を有している。この
ロッド１３の両端には、黒心可鍛鋳鉄などの金属により
製せられた１対の取付金具１４が装着されている。そし
て、各取付金具１４は、ほぼ円柱状に形成され前記ロッ
ド１３の端部が内部に装着される基部１５と、この基部
１５の端面から延出されたほぼ平板状の取付部１６とを
有しており、取付部１６には、板厚方向に貫通する取付
孔１７が形成されている。As shown in FIG. 1, the polymer insulator 11 of the present embodiment is made of a resin such as FRP having an umbrella-shaped outer skin 12 formed of rubber or the like having an insulating property on its outer peripheral surface. It has a cylindrical rod 13. A pair of mounting brackets 14 made of metal such as black-core malleable cast iron are mounted on both ends of the rod 13. Each of the mounting brackets 14 has a base 15 which is formed in a substantially cylindrical shape and has an end portion of the rod 13 mounted therein, and a substantially flat mounting portion 16 extending from an end surface of the base portion 15. The mounting portion 16 has a mounting hole 17 penetrating in the thickness direction.
【００１９】前記１対の取付金具１４のうちの図１右方
に示す一方の取付金具１４ａには、ほぼ円柱状に形成さ
れ前記ロッド１３の端部が内部に装着される基部１５ａ
の端面から図１右方に延出されたほぼ平板状の１つの取
付部１６ａを有しており、この取付部１６ａには、板厚
方向に貫通する取付孔１７ａが形成されている。One of the pair of mounting brackets 14 shown on the right side of FIG. 1 has a base 15a formed substantially in a columnar shape and into which the end of the rod 13 is mounted.
1 has a substantially flat plate-like mounting portion 16a extending rightward in FIG. 1 from the end surface, and a mounting hole 17a penetrating in the thickness direction of the mounting portion 16a is formed in the mounting portion 16a.
【００２０】また、１対の取付金具１４のうちの図１左
方に示す他方の取付金具１４ｂには、ほぼ円柱状に形成
され前記ロッド１３が内部に装着される基部１５ｂと、
この基部１５ｂの端面から二股とされて図１左方に延出
されたほぼ平板状の平行に延在する１対の取付部１６
ｂ，１６ｂを有しており、各取付部１６ｂには、板厚方
向に貫通する取付孔１７ｂがそれぞれ形成されている。The other mounting bracket 14b shown on the left side of FIG. 1 of the pair of mounting brackets 14 has a base 15b formed substantially in a columnar shape and into which the rod 13 is mounted.
A pair of parallel plate-like mounting portions 16 extending bilaterally from the end surface of the base portion 15b and extending to the left in FIG.
b, 16b, and a mounting hole 17b penetrating in the thickness direction is formed in each mounting portion 16b.
【００２１】前記一方の取付金具１４ａの基部１５ａの
内部構造と、前記他方の取付金具１４ｂの基部１５ｂの
内部構造とは同一構造とされており、以下、図１右方に
示す一方の取付金具１４ａを例示して基部１５の内部構
造について説明する。The internal structure of the base 15a of the one mounting bracket 14a and the internal structure of the base 15b of the other mounting bracket 14b are the same, and one of the mounting brackets shown in FIG. The internal structure of the base 15 will be described using the example of 14a.
【００２２】前記取付金具１４の基部１５の一端には、
図２に示すように、前記ロッド１３の端部が装着される
内広がりのテーパー穴１８が形成されている。このテー
パー穴１８は、図２上方に示す開口とされた根本の内径
寸法が前記ロッド１３の外径寸法より、例えば、０．２
〜１．５ｍｍ程度大きく形成されている。そして、テー
パー穴１８は、図２下方に示す底面１８ａに向かって例
えばテーパー角が３度程度で拡径されている。At one end of the base 15 of the mounting bracket 14,
As shown in FIG. 2, an inwardly expanding tapered hole 18 to which the end of the rod 13 is attached is formed. The tapered hole 18 is formed such that the inner diameter of the root formed as an opening shown in the upper part of FIG.
It is formed about 1.5 mm larger. The diameter of the tapered hole 18 is increased toward the bottom surface 18a shown in FIG.
【００２３】前記テーパー穴１８の底面１８ａには、ロ
ッド１３の端部の外周面が嵌合可能な支持突起１９が形
成されている。この支持突起１９は、その高さ寸法Ｈが
ロッド１３と取付金具１４とを相互に離間する方向に付
勢する最大使用荷重より大きい耐引張荷重が図２矢印Ｐ
方向に加わった場合に、前記ロッド１３が移動する距離
Ｌよりも大きく形成されている。そして、支持突起１９
の内径寸法は、前記テーパー穴１８の根本の内径寸法と
同様に前記ロッド１３の外径寸法より、例えば、０．２
〜１．５ｍｍ程度大きく形成されており、本実施の形態
における支持突起１９の外径寸法は、テーパー穴１８の
底面１８ａの内径寸法Ｄより小さく形成されている。On the bottom surface 18a of the tapered hole 18, there is formed a support projection 19 into which the outer peripheral surface of the end of the rod 13 can be fitted. The support projections 19, whose height dimension H
The rod 13 and the mounting bracket 14 are attached in a direction to separate from each other.
Maximum use large resistance tensile load than the load Figure 2 arrow P to energize
When applied in a direction, which is larger than the distance L before Symbol rod 13 moves. And the support projection 19
The inner diameter of the rod 13 is, for example, 0.2 times smaller than the outer diameter of the rod 13 like the inner diameter of the base of the tapered hole 18.
The outer diameter of the support projection 19 in this embodiment is formed smaller than the inner diameter D of the bottom surface 18a of the tapered hole 18 in this embodiment.
【００２４】また、支持突起１９は、図３に示すよう
に、テーパー穴１８の内部の底面１８ａの中心部と外周
部とを連通する連通路２０としての６つの切欠溝２０ａ
によって６等分割配置されている。さらに、図２に示す
ように、テーパー穴１８の内部には、ロッド１３とのみ
接合するエポキシ樹脂などからなる接合部材２１が従来
例と同様にして充填されており、この接合部材２１を硬
化させてロッド１３のみに接合することにより抜け止め
２２が形成されている。また、ロッド１３には、接合部
材２１を硬化させてロッド１３に抜け止め２２を形成し
た後に、前記耐引張荷重が図２矢印Ｐにて示す方向に付
与されており、これにより、ロッド１３は、図２矢印Ｐ
にて示す方向に距離Ｌだけ移動し、ロッド１３の端面と
テーパー穴１８の底面１８ａとの間には、空隙２３が形
成されている。As shown in FIG. 3, the support projection 19 has six notches 20a as communication passages 20 communicating the center and the outer periphery of the bottom surface 18a inside the tapered hole 18.
And are equally divided into six. Further, as shown in FIG. 2, the inside of the tapered hole 18 is filled with a joining member 21 made of an epoxy resin or the like that joins only to the rod 13 in the same manner as in the conventional example. The stopper 22 is formed by joining only to the rod 13. Further, after the joining member 21 is cured to form the retainer 22 on the rod 13, the tensile load is applied to the rod 13 in the direction indicated by the arrow P in FIG. 2. , FIG. 2 arrow P
A gap 23 is formed between the end surface of the rod 13 and the bottom surface 18a of the tapered hole 18 by moving by a distance L in the direction indicated by.
【００２５】また、連通路２０としては、ロッド１３を
取付金具１４に装着する際に、ロッド１３の端部を支持
突起１９の内部に嵌合可能、すなわち、ロッド１３の端
面をテーパー穴１８の底面１８ａの支持突起１９に囲ま
れた中心部側に押し込んだ場合に、このテーパー穴１８
の底面１８ａの中心部近傍に位置する未硬化の軟らかい
接合部材２１を、テーパー穴１８の底面１８ａの中心部
から外周部に向かって容易に流動可能とするもの、例え
ば孔などであってもよく、特に、本実施の形態の形状に
限定されるものではない。When the rod 13 is mounted on the mounting bracket 14, the end of the rod 13 can be fitted into the support projection 19, that is, the end face of the rod 13 is formed in the tapered hole 18. When the tapered hole 18 is pushed into the center of the bottom surface 18a surrounded by the support protrusion 19, the tapered hole 18
The unhardened soft joining member 21 located near the center of the bottom surface 18a of the tapered hole 18 may be a member that can easily flow from the center of the bottom surface 18a of the tapered hole 18 toward the outer periphery, such as a hole. In particular, the present invention is not limited to the shape of the present embodiment.
【００２６】つぎに、本実施の形態のポリマ碍子の作用
についてロッドと取付金具との装着動作とともに説明す
る。Next, the operation of the polymer insulator of the present embodiment will be described together with the mounting operation of the rod and the mounting bracket.
【００２７】本実施の形態のポリマ碍子１１のロッド１
３と取付金具１４の装着動作は、まず、取付金具１４の
テーパー穴１８の内部に離型剤、例えばシリコーン系離
型剤を塗布し、ついでこのテーパー穴１８の内部に未硬
化の軟らかい接合部材２１を供給する。そして、テーパ
ー穴１８の内部に未硬化の接合部材２１をいれた状態で
ロッド１３の端部を差し込み、未硬化の接合部材２１を
テーパー穴１８の内面とロッド１３の外面との間に充満
させる。このロッド１３の端面をテーパー穴１８の底面
１８ａの支持突起１９に囲まれた中心部側に押し込む際
に、このテーパー穴１８の底面１８ａの中心部近傍に位
置する未硬化の接合部材２１は、連通路２０によってテ
ーパー穴１８の中心部から外周部に向かって容易に流動
可能とされているので、ロッド１３の端面がテーパー穴
１８の底面１８ａの支持突起１９に囲まれた中心部側に
位置する接合部材２１を連通路２０を介してテーパー穴
１８の内周面側に押しのけることができ、テーパー穴１
８の底面１８ａとロッド１３の端面との間に接合部材２
１あるいは空気の溜まりができるのを確実に防止するこ
とができる。その結果、ロッド１３の端面は、テーパー
穴１８の底面１８ａに容易かつ確実に当接する。The rod 1 of the polymer insulator 11 of the present embodiment
The mounting operation of the mounting bracket 3 and the mounting bracket 14 is performed by first applying a release agent, for example, a silicone release agent, to the inside of the tapered hole 18 of the mounting bracket 14, and then to the inside of the tapered hole 18, an uncured soft joining member. 21 is supplied. Then, the end of the rod 13 is inserted with the uncured joining member 21 inserted into the tapered hole 18, and the uncured joining member 21 is filled between the inner surface of the tapered hole 18 and the outer surface of the rod 13. . When the end surface of the rod 13 is pushed into the center portion of the bottom surface 18a of the tapered hole 18 surrounded by the support projection 19, the uncured joining member 21 located near the center of the bottom surface 18a of the tapered hole 18 Since the communication passage 20 allows the fluid to easily flow from the center of the tapered hole 18 toward the outer periphery, the end surface of the rod 13 is located on the center portion side of the bottom surface 18a of the tapered hole 18 surrounded by the support protrusion 19. The joining member 21 can be pushed toward the inner peripheral surface side of the tapered hole 18 through the communication passage 20, and the tapered hole 1
Between the bottom surface 18a of the rod 8 and the end surface of the rod 13
1 or the accumulation of air can be reliably prevented. As a result, the end surface of the rod 13 abuts on the bottom surface 18a of the tapered hole 18 easily and reliably.
【００２８】つぎに、接合部材２１を硬化させることに
より、ロッド１３の端部に接合部材２１を接合させて抜
け止め２２を形成する。Next, by hardening the joining member 21, the joining member 21 is joined to the end of the rod 13 to form the stopper 22.
【００２９】つぎに、ロッド１３を前記耐引張荷重の大
きさの荷重で図２に矢印Ｐにて示す方向に引っ張って、
ロッド１３の端面を図２矢印Ｐにて示す方向に距離Ｌだ
け移動させ、テーパー穴１８の内周面と抜け止め２２の
外周面との間にくさび効果で面圧が加わるようにする。
この時、ロッド１３の端面とテーパー穴１８の底面１８
ａとの間には、ロッド１３の移動した距離Ｌの空隙２３
が形成されるが、この空隙２３は、支持突起１９の高さ
Ｈの範囲内に収まっており、ロッド１３の端部の外周面
は、支持突起１９の内周面に接触して径方向外側から支
持される。Next, the rod 13 is pulled in the direction shown by the arrow P in FIG.
The end surface of the rod 13 is moved by a distance L in the direction indicated by the arrow P in FIG. 2 so that a surface pressure is applied between the inner peripheral surface of the tapered hole 18 and the outer peripheral surface of the stopper 22 by a wedge effect.
At this time, the end face of the rod 13 and the bottom face 18 of the tapered hole 18
a gap 23 between the rod 13 and the distance L that the rod 13 has moved.
However, the gap 23 is within the range of the height H of the support projection 19, and the outer peripheral surface of the end of the rod 13 contacts the inner peripheral surface of the support projection 19, and Supported by
【００３０】したがって、本実施の形態のポリマ碍子１
１によれば、ロッド１３に加わる曲げモーメントを、取
付金具１４のテーパー穴１８の開口縁とロッド１３の外
周面との接触部からなる支持点に加え、ロッド１３の端
部の外周面と取付金具１４のテーパー穴１８の底面１８
ａに形成した支持突起１９の内周面との接触部からなる
支持点とで支持する、すなわち、間隔を隔てて２点支持
することができるので、曲げモーメントが図２破線両方
向矢印Ｍにて示す方向に繰り返し加わった場合でも、ロ
ッド１３が同図下方に向かう逆方向に戻ることを防ぎ、
テーパー穴１８の内周面と抜け止め２２の外周面との少
なくとも一方が摩耗することを確実に防止することがで
きるので、曲げモーメントが加わる場合の緩みを確実に
防止することができる。Therefore, the polymer insulator 1 according to the present embodiment is
According to 1, the bending moment applied to the rod 13 is added to the support point formed by the contact portion between the opening edge of the tapered hole 18 of the mounting bracket 14 and the outer peripheral surface of the rod 13, and the outer peripheral surface of the rod 13 is attached to the outer peripheral surface of the rod 13. Bottom surface 18 of tapered hole 18 of metal fitting 14
2A. Since the supporting projection 19 is supported at a supporting point formed of a contact portion with the inner peripheral surface of the supporting projection 19a, that is, the supporting projection 19 can be supported at two points with an interval therebetween, the bending moment is indicated by a dashed double-headed arrow M in FIG. Even if the rod 13 is repeatedly applied in the direction shown, the rod 13 is prevented from returning in the opposite direction toward the lower side in the figure,
Since at least one of the inner peripheral surface of the tapered hole 18 and the outer peripheral surface of the stopper 22 can be reliably prevented from being worn, loosening when a bending moment is applied can be reliably prevented.
【００３１】また、本実施の形態のポリマ碍子１１によ
れば、ロッド１３を取付金具１４に装着する際に、前述
したように、ロッド１３の端面がテーパー穴１８の底面
１８ａの支持突起１９に囲まれた中心部側に位置する接
合部材２１を連通路２０を介して容易に押しのけること
ができ、テーパー穴１８の底面１８ａとロッド１３の端
面との間に接合部材２１あるいは空気の溜まりができる
のを確実に防止することができ、その結果、ロッド１３
の端面をテーパー穴１８の底面１８ａに容易かつ確実に
当接させることができるので、ロッド１３を取付金具１
４に装着する際の圧入荷重を高くする必要がなく、ま
た、軸方向の位置決めを上手く行うことができ、ロッド
１３の端面に対するテーパー穴１８の底面１８ａの位置
精度を高精度に保持することができる。According to the polymer insulator 11 of the present embodiment, when the rod 13 is mounted on the mounting bracket 14, the end face of the rod 13 is in contact with the support projection 19 on the bottom surface 18a of the tapered hole 18 as described above. The joining member 21 located at the surrounded central portion side can be easily pushed away through the communication passage 20, and the joining member 21 or air can be accumulated between the bottom surface 18 a of the tapered hole 18 and the end surface of the rod 13. Can be reliably prevented, and as a result, the rod 13
Can easily and reliably abut against the bottom surface 18a of the tapered hole 18, so that the rod 13
It is not necessary to increase the press-fitting load when mounting on the rod 4, the positioning in the axial direction can be performed well, and the positional accuracy of the bottom surface 18 a of the tapered hole 18 with respect to the end surface of the rod 13 can be maintained with high accuracy. it can.
【００３２】そして、ロッド１３の端面に対するテーパ
ー穴１８の底面１８ａの位置精度を高精度に保持するこ
とができるので、最大使用荷重より大きい引張荷重を加
えた際のロッド１３の移動した距離Ｌの製品によるバラ
ツキを少なくすることができ、その結果、ポリマ碍子１
１の長さのバラツキが少なくなり、寸法精度に優れた高
品質のものを安定して得ることができる。Since the positional accuracy of the bottom surface 18a of the tapered hole 18 with respect to the end surface of the rod 13 can be maintained with high accuracy, the distance L of the rod 13 moved when a tensile load larger than the maximum use load is applied is reduced. Variations due to products can be reduced, and as a result, the polymer insulator 1
Variations in length 1 are reduced, and high-quality products with excellent dimensional accuracy can be stably obtained.
【００３３】また、支持突起１９は、テーパー穴１８の
底面１８ａに突出するようにして形成されているので、
テーパー穴１８の長さを長くする必要がないので、ポリ
マ碍子１１の長さの増加を防止することができる。Further, since the support projection 19 is formed so as to project from the bottom surface 18a of the tapered hole 18, the support projection 19 is formed.
Since it is not necessary to increase the length of the tapered hole 18, an increase in the length of the polymer insulator 11 can be prevented.
【００３４】さらに、抜け止め２２は、支持突起１９の
外側においても全周に亘ってテーパー穴１８の内周面と
くさび効果で圧接されることとなり、テーパー穴１８の
空間を最大限に利用した大きなくさび効果を発揮させる
ことができる。Further, the stopper 22 is pressed against the inner peripheral surface of the tapered hole 18 by a wedge effect over the entire periphery even outside the support projection 19, and the space of the tapered hole 18 is utilized to the maximum. A large wedge effect can be exhibited.
【００３５】図４は本発明に係るポリマ碍子の実施の形
態の他例の要部の構造を示すものであり、本実施の形態
のポリマ碍子１１Ａは、図４（ａ）および同図（ｂ）に
示すように、支持突起１９Ａを、その外周がテーパー穴
１８の内周面に達する大きさに形成されている。その他
の構成は、前述したポリマ碍子１１と同様とされてい
る。FIG. 4 shows the structure of a main part of another embodiment of the polymer insulator according to the present invention. The polymer insulator 11A of this embodiment is shown in FIGS. 4 (a) and 4 (b). As shown in (), the support projection 19A is formed in such a size that its outer periphery reaches the inner peripheral surface of the tapered hole 18. Other configurations are the same as those of the polymer insulator 11 described above.
【００３６】このような構成からなる本実施の形態のポ
リマ碍子１１Ａによれば、前述したポリマ碍子１１と同
様の効果を奏することができとともに、例えば、取付金
具１４が小径のものや、テーパー穴１８の深さの浅いも
のや、テーパー穴１８のテーパー角度が小さいものなど
の支持突起１９Ａを形成するテーパー穴１８の底面１８
ａ近傍部分の空間が狭い場合においても、支持突起１９
Ａを容易に形成することができるとともに、曲げモーメ
ントを支持する支持突起１９Ａの強度を確実かつ十分に
確保することができる。According to the polymer insulator 11A of the present embodiment having such a configuration, the same effect as that of the polymer insulator 11 described above can be obtained, and for example, the mounting bracket 14 has a small diameter or a tapered hole. The bottom surface 18 of the tapered hole 18 that forms the support projection 19A such as a shallow one having a small depth 18 or a tapered hole 18 having a small taper angle.
Even when the space in the vicinity of a is narrow, the support projections 19
A can be easily formed, and the strength of the support projection 19A that supports the bending moment can be reliably and sufficiently secured.
【００３７】なお、本発明は、前記各実施の形態に限定
されるものではなく、必要に応じて変更することができ
る。The present invention is not limited to the above embodiments, but can be modified as needed.
【００３８】[0038]
【発明の効果】以上説明したように本発明のポリマ碍子
によれば、曲げモーメントが加わる場合においても緩む
ことなく、長さを長くすることなく、高精度および高品
質を保持することができるという極めて優れた効果を奏
する。As described above, according to the polymer insulator of the present invention, even when a bending moment is applied, high precision and high quality can be maintained without loosening and lengthening. It has an extremely excellent effect.
【図１】 本発明に係るポリマ碍子の実施の形態の要部
の構造を示す正面図FIG. 1 is a front view showing a structure of a main part of an embodiment of a polymer insulator according to the present invention.
【図２】 図１のポリマ碍子のロッドと取付金具との取
付部近傍を示す一部切断拡大図2 is a partially cut-away enlarged view showing the vicinity of a mounting portion between a rod and a mounting bracket of the polymer insulator of FIG. 1;
【図３】 図１のポリマ碍子のテーパー穴の底面を示す
拡大平面図FIG. 3 is an enlarged plan view showing a bottom surface of a tapered hole of the polymer insulator of FIG. 1;
【図４】 （ａ）および（ｂ）は、本発明に係るポリマ
碍子の実施の形態の他例の要部の構造を示すものであ
り、（ａ）は支持突起近傍の平面図、（ｂ）は支持突起
近傍の一部切断斜視図4 (a) and 4 (b) show a structure of a main part of another example of the embodiment of the polymer insulator according to the present invention. FIG. 4 (a) is a plan view showing the vicinity of a support projection, and FIG. ) Is a partially cut perspective view near the support protrusion.
【図５】 従来のポリマ碍子のロッドと取付金具との取
付部近傍を示す一部切断図FIG. 5 is a partial cutaway view showing the vicinity of a mounting portion between a conventional polymer insulator rod and a mounting bracket.
【図６】 従来の他のポリマ碍子のロッドと取付金具と
の取付部近傍を示す図５と同様の図FIG. 6 is a view similar to FIG. 5, showing the vicinity of a mounting portion between a rod and a mounting bracket of another conventional polymer insulator.
１１、１１Ａ ポリマ碍子 １２ 外皮 １３ ロッド １４ 取付金具 １８ テーパー穴 １８ａ （テーパー穴の）底面 １９、１９Ａ 支持突起 ２０ 連通路 ２０ａ （連通路としての）切欠溝 ２１ 接合部材 ２２ 抜け止め ２３ 空隙 Ｌ （耐引張荷重によりロッドが移動する）距離 Ｈ （支持突起の）高さ寸法 Ｐ 耐引張荷重 Ｍ 曲げモーメント 11, 11A Polymer insulator 12 Outer shell 13 Rod 14 Mounting bracket 18 Tapered hole 18a (Bottom of tapered hole) 19, 19A Support projection 20 Communication passage 20a Notch groove (as communication passage) 21 Joining member 22 Stopper 23 Air gap L (resistance) The rod moves due to the tensile load) Distance H Height (of the support projection) P Withstand load M Bending moment
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01B 17/00 - 17/54 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H01B 17/00-17/54
Claims (1)
３と、このロッド１３の両端にそれぞれ装着され前記ロ
ッド１３の端部が嵌合可能な離型処理した内広がりのテ
ーパー穴１８を具備する取付金具１４と、前記テーパー
穴１８とロッド１３との間に充填され前記ロッド１３の
端部と接合し、前記ロッド１３を前記取付金具１４に支
持可能な接合部材２１により形成された抜け止め２２と
を有するポリマ碍子１１において、 前記取付金具１４のテーパー穴１８の底面１８ａに、前
記ロッド１３の端部の外周面が嵌合可能とされ、かつ、
前記ロッド１３と前記取付金具１４とを相互に離間する
方向に付勢する最大使用荷重より大きい耐引張荷重が加
わった際の前記ロッド１３が移動する距離Ｌよりも大き
い高さＨの支持突起１９を形成するとともに、この支持
突起１９に前記テーパー穴１８の底面１８ａの中心部と
外周部とを連通する少なくとも１つの連通路２０を形成
したことを特徴とするポリマ碍子。1. A rod head 1 which includes an outer peripheral surface of the umbrella-like outer skin
3, the mounting hardware 14 the ends of each mounted the B <br/> head 13 comprises a tapered bore 18 spread among treated release fittable to both ends of the rod de 13, wherein taper
Hole 18 and is filled between the rod de 13 joined to the <br/> end of the rod de 13, before Symbol supporting <br/> lifting severable joint member to lock de 13 to the mounting hardware 14 Oite the polymer碍element 11 having <br/> the stopper 22 formed by 21, the bottom surface 18a of the tapered bore 18 of the mounting hardware 14, before
The outer peripheral surface of the end of the rod 13 can be fitted, and
The rod 13 and the mounting bracket 14 are separated from each other.
A tensile load greater than the maximum working load
Is greater than the distance L that the rod 13 moves when
To form the support projections 19 of have a height H, forming at least one communicating passage 20 that communicates the center portion and the peripheral portion of the bottom surface 18a of the tapered bore 18 in the support <br/> collision force 19 of this A polymer insulator characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26605096A JP3231250B2 (en) | 1996-10-07 | 1996-10-07 | Polymer insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26605096A JP3231250B2 (en) | 1996-10-07 | 1996-10-07 | Polymer insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10112231A JPH10112231A (en) | 1998-04-28 |
| JP3231250B2 true JP3231250B2 (en) | 2001-11-19 |
Family
ID=17425697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26605096A Expired - Fee Related JP3231250B2 (en) | 1996-10-07 | 1996-10-07 | Polymer insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3231250B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101499872B1 (en) * | 2013-11-20 | 2015-03-06 | 현대중공업 주식회사 | The isolation driven insulating operation rod for gas insulated switchgear |
-
1996
- 1996-10-07 JP JP26605096A patent/JP3231250B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101499872B1 (en) * | 2013-11-20 | 2015-03-06 | 현대중공업 주식회사 | The isolation driven insulating operation rod for gas insulated switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10112231A (en) | 1998-04-28 |
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