JP4259150B2

JP4259150B2 - Protective cover for wire support part of hanging insulator

Info

Publication number: JP4259150B2
Application number: JP2003070964A
Authority: JP
Inventors: 勝岩橋; 正寿奥山; 京子松本
Original assignee: 株式会社浅羽製作所
Priority date: 2003-02-10
Filing date: 2003-02-10
Publication date: 2009-04-30
Anticipated expiration: 2023-02-10
Also published as: JP2004247270A

Description

【０００１】
【発明の属する技術分野】
本発明は、懸垂碍子の電線支持部に装着して感電事故防止に用いる、懸垂碍子の電線支持部用保護カバーに関する。
【０００２】
【従来の技術】
送電線を支持した懸垂碍子の電線支持部に用いる保護カバーとしては、該電線支持部を覆うことができるようにヒンジ部により回動可能に連設されていて、各各にほぼＵの字状断面形の接合縁部が設けられている左右一対の合成樹脂製のカバー体により構成されたものが知られている。この公知の保護カバーは工事現場等の架空電線に被着する通常の合成樹脂製の保護パイプと併用されており、電線架設部の安全防護機能を発揮できることは勿論、軽量であって電線支持部に対し容易に着脱操作ができる取扱上の利便性を有している。また、反復して使用できる経済性をも備えている（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開２００２−９３２５５号公報
【０００４】
【発明が解決しようとする課題】
ところで、上記公知の保護カバーは懸垂碍子の電線支持部に装着すると、電線に被着した保護パイプは、保護カバーの接合縁部に内接した状態で、先方部分が該接合縁部に嵌装されるようになっているが、両部材は離間できないように連結されていない。したがって、風圧等の影響により電線が揺れて保護パイプ同士がズレたりすると、保護パイプの先方部分は保護カバーの接合縁部から離間して、その離間部分の電線が露出してしまうといった不具合の起こる恐れがあり、安全対策面での改善が要望されていた。
【０００５】
そこで、本発明の目的は繰り返しの使用ができることは勿論、架設されている電線の傾斜や揺動に追従できて懸垂碍子の電線支持部への装着状態に無理がなく、また、電線が不当に露出する危険性も完全に防止できるように改良した懸垂碍子の電線支持部用保護カバーを提供することにある。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明の特徴とする懸垂碍子の電線支持部用保護カバーは、懸垂碍子の電線支持部側を被覆できるように形成されている絶縁材よりなるカバー本体と、一端側に設けられた連結部が上記カバー本体の左右両袖部に嵌合してそれぞれ回動可能に連結された絶縁材よりなる電線の保護パイプを備え、カバー本体と保護パイプはいずれも長さ方向に沿って縦裂きされて、カバー本体の上面部の中央部分を除いた部分と保護パイプの上記連結部側を除く部分のそれぞれ相対向した両縁部は互いに接合可能に立ち上がった接合縁に形成されており、カバー本体の上面には、その中央部分に開口を形成できるように、該中央部分に臨んだ両縁部の部分から切り込んだ切り欠き部を相対向させて設け、また、カバー本体の左右両袖部の内面は電線支持部側と保護パイプの上記連結部側に当接する接合面部にそれぞれ形成されている一方、保護パイプの上記連結部側は上記接合面部に当接できる周面部を備えている。
【０００７】
この発明の構成において、カバー本体と保護パイプは可撓性を有する合成樹脂、例えば低密度ポリエチレ製であることが軟質であると同時に絶縁性能や成形性の面から好ましい。カバー本体と保護パイプとの回動連結は絶縁性を有する鋲等を用いて果たされ、また、カバー本体と保護パイプの各各の接合縁は、本保護カバーを電線支持部側へ装着した後で、直ちに適当な手段を用いて接合状態に止着される。
【０００８】
【発明の実施の形態】
以下に、本発明の実施の形態を図面を参照して説明する。１は懸垂碍子の電線支持部側を被覆できるように形成されている絶縁材よりなるカバー本体、２，２はカバー本体１の左右両袖部１１，１１に一端側の連結部２１が嵌合してそれぞれ回動可能に連結された絶縁材よりなる電線の保護パイプであって、この両部材は、例えば合成樹脂等の絶縁性を有する鋲３等を用いて回動可能に連結されている。なお、上記絶縁材としては可撓性を有する合成樹脂、例えば、肉厚が２ｍｍ程度の低密度ポリエチレンを用いるのが好ましい。
【０００９】
カバー本体１と保護パイプ２はいずれも長さ方向に沿って縦裂きされて、カバー本体１の上面部１２の中央部分を除いた部分と保護パイプ２の上記連結部２１側を除く部分のそれぞれ相対向した両縁部は接合可能に立ち上がった接合縁１２ａ，１２ｂと２２ａ，２２ｂに形成されている。カバー本体１の上面部１２には、その中央部分に開口１３を形成できるように、該中央部分に臨んだ両縁部の部分から切り込んだ切り欠き部１３ａ，１３ａが相対向して設けられている。
【００１０】
また、カバー本体１の左右両袖部１１の内面は電線支持部と保護パイプの連結部２１に当接する接合面部１４ａ（上部側のみ）と接合面部１４ｂ（上下部）にそれぞれ形成されている一方、保護パイプ２の連結部２１は上下の接合面部１４ｂにそれぞれ当接できる周面部２１ａを備えている。２３は保護パイプ２の相対向した接合縁２２ａ，２２ｂのうちの一方の接合縁２２ａの一端側に設けられている隙間防止用のスペーサー、１５，２４はカバー本体１の周側面部１ａと保護パイプ２の連結部２１の周面部２１ａにそれぞれ相対向させて設けた位置決め用の嵌合部として機能している膨出部であって、この嵌合した膨出部１５，２４の部分を利用してカバー本体１と保護パイプ２は鋲３着されている。
【００１１】
なお、図示の場合、接合縁１２ａ，１２ｂと２２ａ，２２ｂ同士の止着にはマジックテープ（登録商標名）１６，２５がそれぞれ用いられているが、これは他の方法も随時採用できる。上記マジックテープによって止着するときは、接合縁１２ａ，１２ｂと２２ａ，２２ｂは各々の一方の接合縁１２ａ，２２ａか１２ｂ，２２ｂにテープ挿通穴１７，２６が設けられており、テープ挿通穴１７，２６が設けられていない方の接合縁は高さが若干低く（テープ挿通穴１７，２６を設けるために必要な幅）なっている。図中、２７は保護パイプ２に設けられているテープ位置決め用の凹みである。
【００１２】
本保護カバーは上記の如くであって、例えば、図５に示すように懸垂碍子の最下位の碍子３０とその電線支持部３１を下方から覆うようにして、カバー本体１を碍子３０上に支持させると同時に、電線支持部３１側から延びる電線３２を保護パイプ２により被って、接合縁１２ａ，１２ｂと２２ａ，２２ｂをそれぞれ接合させて止着するようにして用いるものである。
【００１３】
この保護カバーによれば、懸垂碍子の電線支持部側は架設されている電線の碍子側寄り部分を含めて隠蔽することができて、当該部分の安全性は一段と向上する。カバー本体１と保護パイプ２は回動可能に連結されており、電線３２の揺動には保護パイプ２が容易に追従できて、カバー本体１側との間に抵抗が生じないことは勿論、保護パイプ２の連結部２１側の周面部２１ａはカバー本体１の袖部１１の内面の接合面部１４に常時当接して、両部材の装着状態は安定できる。
【００１４】
また、保護パイプ２はカバー本体１に離間不能に連結されているので、両部材間に電線３２の露出する不具合は全く起こらず、懸垂碍子の電線支持部３１近傍に生じ勝ちな感電事故の危険性を完全に防止できる。なお、カバー本体１は懸垂碍子の電線支持部３１に支持させて実施することも可能であって、カバー本体１自体の形態は電線支持部側のそれに対応して変形させるものである。
【図面の簡単な説明】
【図１】本発明の実施の形態を一部切り欠いて示した半開き状態の斜視図である。
【図２】図１に示すものを閉じた状態の正面図である。
【図３】図１に示すもののカバー本体の側断面図である。
【図４】図１に示すものの保護パイプの平面図である。
【図５】図１に示すものを電線支持部に装着した使用状態図で、一部が切り欠かれている部分正面図である。
【符号の説明】
１はカバー本体、２は保護パイプ、３は鋲、１１は袖部、１２は上面部、１２ａ，１２ｂは接合縁、１３は開口、１３ａは切り欠き部、１４ａ，１４ｂは接合面部、２１は連結部、２２ａ，２２ｂは接合縁、２１ａは周面部、３０は碍子、３１は電線支持部である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a protective cover for a wire support part of a suspension insulator that is attached to the wire support part of the suspension insulator and used for preventing an electric shock accident.
[0002]
[Prior art]
As a protective cover used for the wire support portion of the suspension insulator that supports the power transmission line, it is continuously connected by a hinge portion so as to be able to cover the wire support portion, and each has a substantially U-shape. 2. Description of the Related Art There are known ones composed of a pair of left and right synthetic resin covers provided with cross-sectional joining edges. This well-known protective cover is used in combination with ordinary synthetic resin protective pipes that are attached to overhead wires at construction sites, etc. On the other hand, it has the convenience of handling that can be easily attached and detached. Moreover, it also has economical efficiency that can be used repeatedly (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-93255
[Problems to be solved by the invention]
By the way, when the above-mentioned known protective cover is attached to the wire support portion of the suspension insulator, the protective pipe attached to the wire is inscribed in the joint edge portion of the protective cover, and the tip portion is fitted to the joint edge portion. However, both members are not connected so that they cannot be separated. Therefore, when the electric wires are shaken due to the influence of wind pressure or the like and the protective pipes are displaced from each other, the tip portion of the protective pipe is separated from the joining edge portion of the protective cover, and the electric wire in the separated portion is exposed. There was a fear that there was a demand for improvements in terms of safety measures.
[0005]
Therefore, the object of the present invention can be used repeatedly, as well as being able to follow the inclination and swinging of the installed electric wire, so that the mounting state of the suspended insulator to the electric wire support portion is not unreasonable, and the electric wire is improperly used. An object of the present invention is to provide a protective cover for a wire support portion of a suspended insulator which can be completely prevented from being exposed.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a protective cover for a wire support portion of a hanging insulator as a feature of the present invention includes a cover main body made of an insulating material formed so as to cover the wire support portion side of the suspension insulator, and one end The connecting part provided on the side is provided with a protective pipe for the electric wire made of an insulating material that is fitted to the left and right sleeve parts of the cover main body and is rotatably connected to each other. Both the cover main body and the protective pipe are long. The edges of the cover body that are vertically split along the direction, excluding the center part of the upper surface part of the cover body and the part other than the connecting part side of the protective pipe, are joint edges that stand up so that they can be joined together. The upper surface of the cover main body is provided with notches cut away from both edge portions facing the central portion so that an opening can be formed in the central portion, and the cover Both left and right of the main body The inner surface of each of the parts is formed on a joint surface part that contacts the wire support part side and the connecting part side of the protective pipe, while the connecting part side of the protective pipe includes a peripheral surface part that can contact the joint surface part. .
[0007]
In the configuration of the present invention, the cover body and the protection pipe are preferably made of a synthetic resin having flexibility, for example, made of low density polyethylene, from the viewpoint of insulation performance and moldability. The rotating connection between the cover main body and the protective pipe is accomplished by using an insulating scissors or the like, and each joint edge of the cover main body and the protective pipe is attached to the wire support section side. Later, it is immediately fastened to the joined state using suitable means.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a cover body made of an insulating material formed so as to be able to cover the wire support side of the hanging insulator, and 2 and 2 are one-side coupling parts 21 fitted to the left and right sleeve parts 11 and 11 of the cover body 1. In this case, the protective pipes for the electric wires are made of an insulating material that is rotatably connected to each other, and both members are rotatably connected by using, for example, an insulating cage 3 such as a synthetic resin. . As the insulating material, it is preferable to use a flexible synthetic resin, for example, a low density polyethylene having a thickness of about 2 mm.
[0009]
Both the cover body 1 and the protective pipe 2 are longitudinally cut along the length direction, and each of a portion excluding the central portion of the upper surface portion 12 of the cover main body 1 and a portion excluding the connecting portion 21 side of the protective pipe 2. Both opposite edge portions are formed at the joining edges 12a, 12b and 22a, 22b which are raised so as to be joined. The upper surface portion 12 of the cover body 1 is provided with notches 13a and 13a that are cut from both edge portions facing the center portion so as to form an opening 13 at the center portion. Yes.
[0010]
In addition, the inner surfaces of the left and right sleeve portions 11 of the cover body 1 are respectively formed on a joint surface portion 14a (upper side only) and a joint surface portion 14b (upper and lower portions) that abut against the connecting portion 21 of the wire support portion and the protective pipe. The connecting portion 21 of the protective pipe 2 includes a peripheral surface portion 21a that can contact the upper and lower joint surface portions 14b. 23 is a spacer for preventing a gap provided on one end side of one of the joint edges 22a and 22b facing each other of the protective pipe 2, and 15 and 24 are a protective member for protecting the peripheral side surface 1a of the cover body 1 A bulging portion functioning as a positioning fitting portion provided opposite to the peripheral surface portion 21a of the connecting portion 21 of the pipe 2 and using the fitted bulging portions 15 and 24. The cover body 1 and the protective pipe 2 are attached to the collar 3.
[0011]
In the illustrated case, Velcro (registered trademark) 16 and 25 are used to fasten the joining edges 12a and 12b and 22a and 22b, but other methods can be used as needed. When fastened with the above-mentioned magic tape, the joining edges 12a, 12b and 22a, 22b are provided with tape insertion holes 17, 26 at one of the joining edges 12a, 22a or 12b, 22b. , 26 is not provided with a slightly lower joint edge (a width necessary for providing the tape insertion holes 17, 26). In the figure, reference numeral 27 denotes a tape positioning recess provided in the protective pipe 2.
[0012]
The present protective cover is as described above. For example, as shown in FIG. 5, the cover body 1 is supported on the insulator 30 so as to cover the lowermost insulator 30 and the wire support portion 31 of the suspended insulator from below. At the same time, the electric wire 32 extending from the electric wire support portion 31 side is covered with the protective pipe 2, and the joining edges 12a, 12b and 22a, 22b are joined and fixed.
[0013]
According to this protective cover, the wire support portion side of the hanging insulator can be concealed including the portion closer to the insulator side of the installed wire, and the safety of the portion is further improved. The cover main body 1 and the protective pipe 2 are rotatably connected, and the protective pipe 2 can easily follow the swing of the electric wire 32, and of course no resistance is generated between the cover main body 1 and the cover main body 1. The peripheral surface portion 21a on the connecting portion 21 side of the protective pipe 2 is always in contact with the joint surface portion 14 on the inner surface of the sleeve portion 11 of the cover body 1, so that the mounting state of both members can be stabilized.
[0014]
Further, since the protective pipe 2 is connected to the cover body 1 so as not to be separated, there is no problem that the electric wire 32 is exposed between the two members, and there is a risk of an electric shock that is likely to occur near the electric wire support portion 31 of the suspended insulator. Sex can be completely prevented. The cover main body 1 can also be implemented by being supported by the wire support 31 of the hanging insulator, and the form of the cover main body 1 itself is deformed corresponding to that on the wire support portion side.
[Brief description of the drawings]
FIG. 1 is a perspective view of a half-open state in which an embodiment of the present invention is partially cut away.
FIG. 2 is a front view of the state shown in FIG. 1 in a closed state.
3 is a side cross-sectional view of the cover body shown in FIG. 1. FIG.
4 is a plan view of the protective pipe shown in FIG. 1. FIG.
FIG. 5 is a partial front view in which a part shown in FIG.
[Explanation of symbols]
1 is a cover body, 2 is a protective pipe, 3 is a collar, 11 is a sleeve, 12 is an upper surface, 12a and 12b are joint edges, 13 is an opening, 13a is a notch, 14a and 14b are joint surfaces, and 21 The connecting portions, 22a and 22b are joining edges, 21a is a peripheral surface portion, 30 is an insulator, and 31 is a wire support portion.

Claims

A cover body made of an insulating material formed so as to cover the wire support part side of the suspension insulator, and a connecting part provided on one end side can be fitted to the left and right sleeve parts of the cover body to rotate respectively. The cover body and the protection pipe are both longitudinally cut along the length direction, and the cover pipe and the protection pipe except for the central part of the upper surface portion are provided. Both opposite edge portions of the portion excluding the connecting portion side are formed as joint edges rising so as to be able to be joined to each other, and the center of the cover main body is formed so that an opening can be formed in the central portion thereof. The notch parts cut from both edge parts facing the part are provided opposite to each other, and the inner surfaces of the left and right sleeve parts of the cover body are joined to contact the wire support part side and the connecting part side of the protective pipe. Each shape on the face Is one that, the connecting portion the protective cover for the wire supporting portion of the suspension insulator which, further comprising a peripheral surface portion that can abut on the bonding surface with features of the protective pipe.

2. The protective cover for a wire support part of a suspended insulator according to claim 1, wherein the cover body and the protective pipe are made of flexible synthetic resin.