JPH0260406A - End treatment of wire - Google Patents
End treatment of wireInfo
- Publication number
- JPH0260406A JPH0260406A JP20888088A JP20888088A JPH0260406A JP H0260406 A JPH0260406 A JP H0260406A JP 20888088 A JP20888088 A JP 20888088A JP 20888088 A JP20888088 A JP 20888088A JP H0260406 A JPH0260406 A JP H0260406A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- water
- press
- melt adhesive
- adhesive
- 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
Landscapes
- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、架空配電線等において、応力腐蝕等の発生を
防止する電線の端末処理方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for treating the terminals of electric wires in overhead distribution lines and the like to prevent the occurrence of stress corrosion and the like.
〈従来の技術〉
架空配電線等においては、架線張力と端末からの雨水等
の浸入により、応力腐蝕が発生し、断線することがある
。<Prior Art> In overhead power distribution lines, stress corrosion may occur due to the tension of the overhead lines and the infiltration of rainwater from the terminals, which may lead to wire breakage.
この応力腐蝕は、張力と水分の相乗作用により生じるも
のであり、どちらか一方を除くことにより防止できると
されている。This stress corrosion is caused by the synergistic effect of tension and moisture, and it is said that it can be prevented by removing either one of them.
そこで、従来、電線の絶縁体に導体の錆び止めのための
防錆剤を添加するとか、あるいは電線の撚線導体内に水
密性樹脂を圧入する等の方法が講じられている。Therefore, conventional methods have been taken such as adding a rust preventive agent to the insulator of the electric wire to prevent the conductor from rusting, or press-fitting a watertight resin into the stranded conductor of the electric wire.
〈発明が解決しようとする課題〉
しかしながら、上記各方法の場合だと、電線の全長に渡
って処理しなければならないため、材料費が嵩む他、製
造工程数の増大、製造装置の増設等が必要で、どうして
も製造コストの１・昇が避けられない。<Problem to be solved by the invention> However, in the case of each of the above methods, the entire length of the electric wire must be treated, which not only increases material costs but also increases the number of manufacturing steps and increases the number of manufacturing equipment. This is necessary, and a 1. increase in manufacturing costs cannot be avoided.
本発明は、このような従来の実情に鑑みてなされたもの
で、その目的とするところは、電線端末部分から特定物
質の接着剤を圧入することにより、雨水等の最も浸入し
易いこの端末部分から水の浸入を阻止して、応力腐蝕の
発生を防止する電線の端末処理方法を提供せんとするこ
とにある。The present invention has been made in view of the above-mentioned conventional circumstances, and its purpose is to press-fit an adhesive made of a specific material from the terminal portion of the electric wire, thereby removing the terminal portion where rainwater and the like are most likely to enter. An object of the present invention is to provide a method for treating the terminals of electric wires, which prevents stress corrosion from occurring by preventing water from entering.
〈課題を解決するための手段及びその作用〉か−る本発
明の電線の端末処理方法は、電線の架線時、口出しした
端末からホットメルト型接着剤を圧入する方法である。<Means for Solving the Problems and Their Effects> The method for treating the ends of electric wires according to the present invention is a method of press-fitting a hot-melt adhesive from the protruded ends during overhead wiring of electric wires.
本発明のもう一つは、上記ボットタルト型接着剤を圧入
した後、さらに吸水性樹脂を添加したホットメルト型接
着剤を圧入する方法である。Another aspect of the present invention is a method of press-fitting the above-mentioned Bottart-type adhesive and then press-fitting a hot-melt adhesive to which a water-absorbing resin has been added.
本発明が適用される電線としては、架空配電線の場合、
ポリ塩化ビニル電線、ポリエチレン電線、架橋ポリエチ
レン電線等が挙げられる。The electric wires to which the present invention is applied include, in the case of overhead distribution lines,
Examples include polyvinyl chloride electric wire, polyethylene electric wire, crosslinked polyethylene electric wire, and the like.
これらの電線の架線時、端末では口出しが行われるわり
であるが、この口出し部分から水の浸入を阻止するため
、本発明では、上記ホットメルト型接着剤を圧入するの
である。つまり、この接着剤で水の浸入口を寒く方法で
ある。When these electric wires are connected to the overhead line, a lead-out is performed at the terminal, but in order to prevent water from entering through the lead-out part, in the present invention, the above-mentioned hot-melt adhesive is press-fitted. In other words, this adhesive is a way to cool the water inlet.
この閉塞材としてのホットメルト型接着剤の場合、十分
な水浸入阻止効果を得るためには、電線導体および絶縁
体の両方と良好に密着する必要がある。このため、電線
の種類によって、接着剤のタイプを使い分けることが好
ましい。In the case of a hot-melt adhesive used as a plugging material, it is necessary to adhere well to both the wire conductor and the insulator in order to obtain a sufficient effect of preventing water infiltration. For this reason, it is preferable to use different types of adhesive depending on the type of electric wire.
例えば、ポリ塩化ビニル電線ではポリエステル系ホット
メルト型接着剤がよく、ポリエチレンあるいは架橋ポリ
エチレン電線ではエチレン酢酸ビニル（ＥＶＡ）Ｍや、
エチレン−エチルアクリレート（ＥＥＡ）系のボッ１−
メルト型接着剤がよい。For example, for polyvinyl chloride wires, polyester-based hot melt adhesives are good, and for polyethylene or cross-linked polyethylene wires, ethylene vinyl acetate (EVA) M,
Ethylene-ethyl acrylate (EEA)-based bottle 1-
Melt adhesive is best.
このホットメルト型接着剤の具体的な圧入方法は、特に
限定されないが、例えば、第１図に示したように、筒型
の治具１とホットメルＩ・アプリケタ２を用いて行うと
よい。つまり、電線３の外径サイズにあった治具ｌを用
意し、この治具ｌを、口出しされた導体４が内側になる
ように電線３の外周に（井目出し部分）に装着し、当該
治具１の先端開口（導入口）Ｉａに、ホットメルトアプ
リケータ２の外装シリンダ５の注入Ｄ５ａを嵌め込み、
当該シリンダ５内のホットメルト型接着剤６を、ピスト
ン７に連結された押圧部８を押すことにより、上記治具
１中に導き、この治具１から電線３の端末に圧入する方
法である。そして、その際の接着剤の圧入長さは、端部
（端面）より１５ｃｍ程度あれば十分である。The specific method of press-fitting the hot-melt adhesive is not particularly limited, but it may be carried out using, for example, a cylindrical jig 1 and a hot-melt I applicator 2, as shown in FIG. In other words, prepare a jig l that matches the outer diameter size of the electric wire 3, and attach this jig l to the outer periphery of the electric wire 3 (the cutout part) so that the exposed conductor 4 is on the inside. Fit the injection D5a of the exterior cylinder 5 of the hot melt applicator 2 into the tip opening (inlet) Ia of the jig 1,
This is a method in which the hot-melt adhesive 6 in the cylinder 5 is guided into the jig 1 by pushing the pressing part 8 connected to the piston 7, and is press-fitted from the jig 1 into the end of the electric wire 3. . In this case, the press-fitting length of the adhesive should be about 15 cm from the end (end face).
このようにしてホットメルト型接着剤が圧入された端末
においては、水浸入口が塞がれるため、水の浸入は効果
的に阻止されるものの、電線の架線状態では、この端末
処理部分の下側に付着水が溜まり易く、長期的にはこの
付着水が上記圧入されたポットメルト型接着剤側に浸入
してくる恐れがある。このため、より好ましくは、通常
のホットメルト型接着剤の圧入後、さらに上述した吸水
性樹脂を添加したホットメルト型接着剤を２重に圧入し
ておくとよい。At the end where the hot-melt adhesive is press-fitted in this way, the water inlet is blocked, effectively preventing water from entering, but when the wire is in an overhead line state, the bottom of this end-treated part is Adhering water tends to accumulate on the side, and over a long period of time, there is a risk that this adhering water will enter the press-fitted pot-melt adhesive side. For this reason, more preferably, after press-fitting a normal hot-melt adhesive, the hot-melt adhesive added with the above-mentioned water-absorbing resin is further press-fitted twice.
そうすると、この吸水性樹脂により、付着水、浸入水は
捕獲、保持されるため、より効果的な水浸入阻止効果が
得られる。この吸水性樹脂としては、例えば、住友化学
］ユ業社製のスミカゲル（商品名）、製鉄化学工業社製
のダイスウェル（商品名）等が挙げられ、ボットメルト
型接着剤１００重量部に対して、５０〜１００重量部程
度添加するとよい。Then, the water-absorbing resin captures and retains adhering water and infiltrating water, resulting in a more effective water intrusion prevention effect. Examples of this water-absorbing resin include Sumikagel (trade name) manufactured by Sumitomo Chemical Yugyo Co., Ltd. and Dicewell (trade name) manufactured by Seitetsu Kagaku Kogyo Co., Ltd., based on 100 parts by weight of the Botmelt adhesive. , about 50 to 100 parts by weight may be added.
〈実施例〉
長さ５ｍの各種の配電線を用意し、その両端末に、第１
表に示した種々の条件下（実施例１〜８、比較例１〜３
）で、端末処理を行い、各端末に０゜１ｋｇ／ｃｍ”の
水圧を１０日間掛け、電線内部への水の浸入の有無を調
べた。<Example> Various types of distribution lines with a length of 5 m are prepared, and the first
Various conditions shown in the table (Examples 1 to 8, Comparative Examples 1 to 3)
), and a water pressure of 0°1 kg/cm" was applied to each terminal for 10 days, and the presence or absence of water intrusion into the inside of the wire was examined.
上記第１表から、本発明条件を満たす実施例１〜８の場
合、水の浸入がなく、本発明条件を欠く比較例１〜３で
は水の浸入があることが分る。From Table 1 above, it can be seen that in Examples 1 to 8, which meet the conditions of the present invention, there is no infiltration of water, and in Comparative Examples 1 to 3, which lack the conditions of the present invention, there is intrusion of water.
〈発明の効果〉
以」−の説明から明らかなように本発明によれば、次の
ような優れた効果が得られる。<Effects of the Invention> As is clear from the explanation below, according to the present invention, the following excellent effects can be obtained.
（１）ホットメルト型接着剤の圧入により、導体内への
水分の浸入が効果的に阻止され、応力腐蝕の発生が防止
される。(1) Press-fitting the hot melt adhesive effectively prevents moisture from entering the conductor, thereby preventing stress corrosion.
（２）ホットメルト型接着剤と吸水性樹脂添加のボット
タルト型接着剤とを２重に圧入すれば、より効果的に水
分の浸入が阻止され、より完全な応力腐蝕発生防止策が
とれる。(2) By double press-fitting a hot melt adhesive and a Bottart adhesive containing a water-absorbing resin, moisture infiltration can be more effectively prevented and stress corrosion can be more completely prevented.
（３）現場での端末処理だけで応力腐蝕発生防止策がと
れるため、手軽である他、材料費の大幅な低減等により
、極めて低コストで対応することができる。(3) Stress corrosion prevention measures can be taken by simply treating the terminals on site, which is not only easy, but also extremely low-cost due to a significant reduction in material costs.
（４）また、適用電線は特別な電線である必要はなく、
従来の電線にもそのまま適用することができ、大きな汎
用性が得られる。(4) Also, the applicable electric wire does not need to be a special electric wire,
It can be applied to conventional electric wires as is, providing great versatility.
第１図は本発明に係る電線の端末処理方法を実施する際
の装置系の一例を示した概略説明図である。
図中、
１・・・・治具、
２・・・・ホットメルトアプリケータ、３・・・・電線
、
４・・・・導体、
６・・・・ホットメルト型接着剤、
特許出願人 藤倉電線株式会社FIG. 1 is a schematic explanatory diagram showing an example of an apparatus system for carrying out the electric wire end treatment method according to the present invention. In the figure, 1... jig, 2... hot melt applicator, 3... electric wire, 4... conductor, 6... hot melt adhesive, patent applicant Fujikura Electric Wire Co., Ltd.
Claims (2)
型接着剤を圧入することを特徴とする電線の端末処理方
法。(1) A method for treating the ends of electric wires, which comprises press-fitting a hot-melt adhesive from the protruded ends during overhead wiring of electric wires.
型接着剤を圧入した後、さらに吸水性樹脂を添加したホ
ットメルト型接着剤を圧入することを特徴とする電線の
端末処理方法。(2) A method for treating the terminals of electric wires, which comprises press-fitting a hot-melt adhesive from the protruded terminal during overhead wiring of the electric wires, and then press-fitting a hot-melt adhesive containing a water-absorbing resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63208880A JP2744943B2 (en) | 1988-08-23 | 1988-08-23 | Wire termination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63208880A JP2744943B2 (en) | 1988-08-23 | 1988-08-23 | Wire termination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0260406A true JPH0260406A (en) | 1990-02-28 |
| JP2744943B2 JP2744943B2 (en) | 1998-04-28 |
Family
ID=16563644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63208880A Expired - Fee Related JP2744943B2 (en) | 1988-08-23 | 1988-08-23 | Wire termination method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2744943B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016134362A (en) * | 2015-01-22 | 2016-07-25 | 中国電力株式会社 | Insulating terminal cap |
| JP2019061781A (en) * | 2017-09-25 | 2019-04-18 | 矢崎総業株式会社 | Wire stop connection structure and wire stop connection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4887386A (en) * | 1972-02-22 | 1973-11-16 | ||
| JPS51119992A (en) * | 1975-04-11 | 1976-10-20 | Fujikura Ltd | Air-tight dam for plastics sheath cable |
-
1988
- 1988-08-23 JP JP63208880A patent/JP2744943B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4887386A (en) * | 1972-02-22 | 1973-11-16 | ||
| JPS51119992A (en) * | 1975-04-11 | 1976-10-20 | Fujikura Ltd | Air-tight dam for plastics sheath cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016134362A (en) * | 2015-01-22 | 2016-07-25 | 中国電力株式会社 | Insulating terminal cap |
| JP2019061781A (en) * | 2017-09-25 | 2019-04-18 | 矢崎総業株式会社 | Wire stop connection structure and wire stop connection method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2744943B2 (en) | 1998-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |