JPH02223168A - Waterproofing method for branch connection section of power cable - Google Patents
Waterproofing method for branch connection section of power cableInfo
- Publication number
- JPH02223168A JPH02223168A JP28915888A JP28915888A JPH02223168A JP H02223168 A JPH02223168 A JP H02223168A JP 28915888 A JP28915888 A JP 28915888A JP 28915888 A JP28915888 A JP 28915888A JP H02223168 A JPH02223168 A JP H02223168A
- Authority
- JP
- Japan
- Prior art keywords
- branch
- heat
- branch lines
- branch line
- tube
- 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
- 238000004078 waterproofing Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000004831 Hot glue Substances 0.000 claims description 21
- 238000002844 melting Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000011800 void material Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 abstract 5
- 229920000642 polymer Polymers 0.000 description 14
- 239000004020 conductor Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 3
- 241000283216 Phocidae Species 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000283131 Leptonychotes weddellii Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Cable Accessories (AREA)
Abstract
Description
本発明は、幹線ケーブルに分岐線を接続した際の分岐線
側分岐接続部の防水方法に係り、特に３本以上奇数本又
は２本以上偶数本の分岐線を接続した場合に生じる各分
岐線間の空隙を封閉し各分岐線間に浸水するのを防止し
て分岐線側の防水を確実にすることのできる電力ケーブ
ルの分岐接続部の防水方法に関する。The present invention relates to a waterproofing method for a branch connection part on a branch line side when a branch line is connected to a main cable, and in particular, each branch line that occurs when three or more odd number branch lines or two or more even number branch lines are connected. The present invention relates to a waterproofing method for a branch connection part of a power cable, which can ensure waterproofing of the branch line side by sealing the gap between the branch lines and preventing water from entering between the branch lines.
【従来の技術１
電線・ケーブル１条の長さは、無限の長さを有するもの
ではなく、製造の面あるいは輸送上の制限もあるが、主
に布設される場所の条件に左右され、長距離に渡ってケ
ーブルを布設するためには必ず何条かの有限の長さの電
線・ケーブルを中間接続して繋ぎ合わせて１本の電線・
ケーブルを構成している。また、電力線、通信線は、電
柱間に架設されている幹線から電力・通信を使用する各
オフィスビル、各家庭に引き込まれる訳であるが、電柱
からビル等に引き込むには、電柱から引いた電線等をビ
ル等の壁で一旦支持固定して更にこの電線に室内引き込
み用の電線を接続して、さらに、この室内引き込み用の
電線（屋内幹線）から複数の分岐線に分岐している。ま
た、この分岐線から更に複数本の電線に分岐する場合も
ある。
この幹線ケーブルから複数の分岐線に分岐する分岐接続
１００は、第７図に示す如く行われている。すなわち、
幹線ケーブルである電線・ケーブル２００の導体２１０
に３本の分岐線３００．４００．５００の導体３１０．
４１０．５１０がそれぞれ接続されている。この導体の
接続部は、通常は圧縮形コネクタや半田等によって固着
されている。電線・ケーブル２００は、導体２１０の上
に絶縁体２２０が被覆されており、この絶縁体２２０の
上に最外層シース２３０が被覆されて構成されている。
また、分岐８３００．４００．５００も同様に導体３１
０，４１０．５１０の上に絶縁体３２０．４２０．５２
０が被覆されており、この絶縁体３２０．４２０．５２
０の上に最外層シース３３０．４３０．５３０が被覆さ
れて構成されている。この分岐線３００，４００．５０
０は、第８図に示す如く、分岐線３００の最外層シース
３３０と分岐！４００，５００の最外層シース４３０．
５３０との間に熱溶融形テープ６００を挟み込み、この
分岐線３００，４００．５ｏ○の最外層シース３３０．
４３０．５３０の上に内側にホットメルトの接着材７０
０が塗布された熱収縮性の保護防水チューブ８００を被
覆させ、加熱収縮させる。この熱収縮性の保護防水チュ
ーブ８００を加熱収縮する時の熱により保護防水チュー
ブ８００に塗布したホットメルトの接着材７００、分岐
Ｒ１Ａ３００．４００，５００の間に挟んだ熱溶融形テ
ープ６００が融けて、分岐線３００゜４００．５００の
間に生じる空隙を封閉することにより防水効果を持たせ
ようとしている。
【発明が解決しようとする課題１
従来の方法によると、幹線ケーブルである電線ケーブル
２００の導体２１０に２本の分岐線３００．４００の導
体３１０．４１０を接続する場合には、分岐線３００の
最外層シース３３０と分岐ｌｌＡ４００の最外層シース
４３０との間に熱溶融形テープ６００を挟み込み、この
分岐線３００．４ｏＯの最外層シース３３０，４３０の
上に内側にホントメルトの接着材７００が塗布された熱
収縮性の保護防水チューブ８００を被覆させ、加熱収縮
させることになる。このため、２本の分岐線３０ｏ、４
００の場合には、熱収縮性の保護防水チューブ８００を
加熱収縮する時の熱により保護防水チューブ８００に塗
布したホットメルトの接着材７００と、２本の分岐線３
００．４００の間に挟んだ熱溶融形テープ６００が融け
て、２本の分岐線３００，４００の間に生じる空隙が封
閉され、２本の分岐線３００，４００間の防水効果を持
たせることができる。
しかしながら、従来の方法によったのでは、第７図に示
す如く、幹線ケーブルである電線・ケーブル２００の導
体２１０に３本の分岐ｌｌＡ３００．４００．５００の
導体３１０．４１０．５１０を接続する場合には、分岐
線３００の最外層シース３３０と分岐線４００．５００
の最外層シース４３０．５３０との間に熱溶融形テープ
６００を挟み込み、この分岐線３００，４００．５００
（７）最外層シース３３０．４３０，５３０の上に内側
にホットメルトの接着材７００が塗布された熱収縮性の
保護防水チューブ８００を被覆させ、加熱収縮させて、
保護防水チューブ８００に塗布したホットメルトの接着
材７００１分岐Ａｌ１３００と分岐！４００，５００の
間に挟んだ熱溶融形テープ６００が融けても、第８図に
示す如く、分岐線３００．４００，５００の間に生じる
空隙を完全に封閉することはできず、分岐１１Ａ３００
，４００，５００の間の合わせ部に空隙部９００が生じ
てしまい、分岐線３００，４００．５００間の防水効果
を持たせることができないという問題点を有している。
コノ分岐線３００，４００．５００（７）ｆｕｌｌ（７
）合わせ部に空隙部９００は、分岐線３００，４００．
５００のサイズが大サイズの場合には、分岐線３００．
４００．５００の合わせ部の空隙部９００も大きくなり
、保護防水チューブ８００に塗布したホットメルトの接
着材７００や分岐線３００と分岐線４００．５００の間
に挟んだ熱溶融形テープ６００によったのでは、分岐線
３００．４００．５００の間の合わせ部に空隙部９００
を完全に埋めることができず、防水効果を持たせられな
いという問題点を有している。
本発明は、３本以上奇数本又は２本以上偶数本の分岐線
を接続した場合に生じる各分岐線間の空隙を封閉し各分
岐線間に浸水するのを防止して分岐線側の防水を確実に
することのできる電力ケーブルの分岐接続部の防水方法
を提供することを目的としている。
【課題を解決するための手段】
上記目的を達成するために、本発明の電力ケーブルの分
岐接続部の防水方法においては、１本の幹線ケーブルに
３本以上奇数本の分岐線を接続する場合、１本の幹線ケ
ーブルに３本以上奇数本の分岐線を接続した後、２本の
分岐線を１組として該２本の分岐線の間に絶縁シース端
から所定長さ熱溶融形テープを挟み込むと共に、該２本
の分岐線の外側にホットメルトの接着材付熱収縮形チュ
ーブを被覆して加熱収縮し、残り１本の分岐線と各組の
分岐線とをそれぞれ熱溶融形テープを介して重ね合わせ
外側に熱収縮性の保護防水チューブを被覆して加熱収縮
することにより、各分岐線間の合わせ部に空隙部の発生
を防止して各分岐線間へ浸水を防止するものである。
また、上記目的を達成するために５本発明の電力ケーブ
ルの分岐接続部の防水方法においては、１本の幹線ケー
ブルに２本以上偶数本の分岐線を接続する場合、１本の
幹線ケーブルに２本以上偶数本の分岐線を接続した後、
２本の分岐線を１組として該２本の分岐線の間に絶縁シ
ース端から所定長さ熱溶融形テープを挟み込むと共に、
該２本の分岐線の外側にホントメルトの接着材付熱収縮
形チューブを被覆して加熱収縮し、各組の分岐線同志の
それぞれを熱溶融形テープを介して重ね合わせ外側に熱
収縮性の保護防水チューブを被覆して加熱収縮すること
により、各分岐線間の合わせ部に空隙部の発生を防止し
て各分岐線間へ浸水を防止するものである。[Prior art 1] The length of a single wire/cable is not infinite, and although there are restrictions in terms of manufacturing and transportation, it is mainly influenced by the conditions of the place where it is laid, and In order to lay a cable over a distance, it is necessary to connect several finite length wires/cables in the middle and join them together to form a single wire/cable.
configuring the cable. In addition, power lines and communication lines are drawn from main lines installed between utility poles to each office building and each home where power and communication are used. An electric wire or the like is once supported and fixed on the wall of a building or the like, and then an electric wire for indoor lead-in is connected to this electric wire, and furthermore, this electric wire for indoor lead-in (indoor main line) is branched into a plurality of branch lines. Further, this branch line may further branch into a plurality of electric wires. A branch connection 100 for branching from this trunk cable to a plurality of branch lines is performed as shown in FIG. That is,
Conductor 210 of electric wire/cable 200 which is a trunk cable
conductor 310. with three branch wires 300.400.500.
410 and 510 are connected respectively. The connection portion of this conductor is usually fixed by a compression type connector, solder, or the like. The electric wire/cable 200 is constructed by covering a conductor 210 with an insulator 220 and covering the insulator 220 with an outermost sheath 230. Similarly, branches 8300.400.500 are also connected to conductor 31.
Insulator 320.420.52 on top of 0.410.510
0 is coated and this insulator 320.420.52
0 is covered with outermost sheaths 330, 430, and 530. This branch line 300,400.50
0, as shown in FIG. 8, branches from the outermost sheath 330 of the branch line 300! 400,500 outermost sheath 430.
A heat-melting tape 600 is sandwiched between the outermost sheath 330.
Hot melt adhesive 70 inside on top of 430.530
A heat-shrinkable protective waterproof tube 800 coated with No. 0 is coated and heat-shrinked. The hot melt adhesive 700 applied to the protective waterproof tube 800 and the hot melt tape 600 sandwiched between the branches R1A300, 400, and 500 melt due to the heat generated when the heat-shrinkable protective waterproof tube 800 is heat-shrinked. , by sealing the gap that occurs between the branch lines 300°, 400°, and 500° to provide a waterproof effect. Problem 1 to be Solved by the Invention According to the conventional method, when connecting the conductors 310 and 410 of two branch lines 300 and 400 to the conductor 210 of the electric wire cable 200 which is the main cable, A hot-melt tape 600 is sandwiched between the outermost sheath 330 and the outermost sheath 430 of the branch llA 400, and a true melt adhesive 700 is applied inside on the outermost sheath 330, 430 of the branch line 300.4oO. The heat-shrinkable protective waterproof tube 800 is covered and heat-shrinked. For this reason, the two branch lines 30o, 4
In the case of 00, the hot-melt adhesive 700 applied to the protective waterproof tube 800 by the heat generated when the heat-shrinkable protective waterproof tube 800 is heated and the two branch lines 3
The heat-melting tape 600 sandwiched between the two branch lines 300 and 400 is melted to seal the gap between the two branch lines 300 and 400, thereby providing a waterproof effect between the two branch lines 300 and 400. Can be done. However, according to the conventional method, as shown in FIG. 7, when the conductors 310, 410, 510 of the three branches 11A 300, 400, 500 are connected to the conductor 210 of the electric wire/cable 200 that is the main cable. includes the outermost sheath 330 of the branch line 300 and the branch line 400.500.
A heat-melting tape 600 is sandwiched between the outermost layer sheath 430.530 of the branch line 300, 400.500.
(7) Cover the outermost sheath 330, 430, 530 with a heat-shrinkable protective waterproof tube 800 coated with hot-melt adhesive 700 on the inside, heat-shrink it,
Hot melt adhesive 7001 applied to protective waterproof tube 800 Branches with Al1300! Even if the heat-melting tape 600 sandwiched between the branch lines 300 and 400 and 500 melts, the gap created between the branch lines 300 and 400 and 500 cannot be completely sealed, as shown in FIG.
, 400, 500, and a gap 900 is created at the joint between the branch lines 300, 400, 500, making it impossible to provide a waterproof effect between the branch lines 300, 400, and 500. Kono branch line 300, 400.500 (7) full (7
) A gap 900 is formed in the joint portion of the branch lines 300, 400 .
If the size of 500 is large, the branch line 300.
The gap 900 at the joining part of 400.500 is also enlarged due to the hot melt adhesive 700 applied to the protective waterproof tube 800 and the hot melt tape 600 sandwiched between the branch line 300 and the branch line 400.500. Then, there is a gap 900 at the joint between the branch lines 300, 400, and 500.
It has the problem that it cannot be completely filled and cannot have a waterproof effect. The present invention seals the gaps between each branch line that occur when three or more odd number branch lines or two or more even number branch lines are connected, and prevents water from entering between each branch line, thereby waterproofing the branch line side. It is an object of the present invention to provide a method of waterproofing branch connections of power cables, which can ensure the following. [Means for Solving the Problems] In order to achieve the above object, in the method for waterproofing a branch connection part of a power cable according to the present invention, when an odd number of branch lines of three or more are connected to one main cable, After connecting three or more odd number branch lines to one main cable, two branch lines are made into a set, and a predetermined length of heat-melting tape is placed between the two branch lines from the end of the insulating sheath. At the same time, the outside of the two branch wires is coated with heat-shrink tubes with hot-melt adhesive and heat-shrinked, and the remaining one branch wire and each set of branch wires are covered with heat-melt tape. By covering the outer side of the overlapping heat-shrinkable waterproof tube and shrinking it by heat, it prevents the formation of voids at the joints between each branch line and prevents water from entering between each branch line. be. In addition, in order to achieve the above object, in the waterproofing method of the branch connection part of a power cable of the present invention, when two or more even number branch lines are connected to one main cable, After connecting two or more even numbered branch lines,
A set of two branch wires is set, and a predetermined length of heat-melting tape is inserted from the end of the insulating sheath between the two branch wires, and
The outer sides of the two branch wires are coated with heat-shrinkable tubes with true-melt adhesive and heat-shrinked, and each set of branch wires is overlapped with heat-shrinkable tape on the outside. By covering the protective waterproof tube and shrinking it by heat, the generation of voids at the joints between the branch lines is prevented, thereby preventing water from entering between the branch lines.
【作用１
１本の幹線ケーブルに３本以上奇数本の分岐線を接続す
る場合、１本の幹線ケーブルに３本以上奇数本の分岐線
を接続した後、２本の分岐線を１組として該２本の分岐
線の間に絶縁シース端から所定長さ熱溶融形テープを挟
み込むと共に、該２本の分岐線の外側にホットメルトの
接着材付熱収縮形チューブを被覆して加熱収縮し、残り
１本の分岐線と各組の分岐線とをそれぞれ熱溶融形テー
プを介して重ね合わせ外側に熱収縮性の保護防水チュー
ブを被覆して加熱収縮する構成しているため、３本以上
奇数本の分岐線を接続した場合に生じる各分岐線間の合
わせ部に空隙部の発生を防止して各分岐線間へ浸水する
のを防止して分岐線側の防水を確実にすることができる
。
また、１本の幹線ケーブルに２本以上偶数本の分岐線を
接続する場合、１本の幹線ケーブルに２本以上偶数本の
分岐線を接続した後、２本の分岐線を１組として該２本
の分岐線の間に絶縁シース端から所定長さ熱溶融形テー
プを挟み込むと共に、該２本の分岐線の外側にホットメ
ルトの接着材付熱収縮形チューブを被覆して加熱収縮し
、各組の分岐線同志のそれぞれを熱溶融形テープを介し
て重ね合わせ外側に熱収縮性の保護防水チューブを被覆
して加熱収縮２本以上偶数本の分岐線を接続した場合に
生じる各分岐線間の合わせ部に空隙部の発生を防止して
各分岐線間へ浸水するのを防止して分岐線側の防水を確
実にすることができる。
【実施例】
以下、本発明の実施例について説明する。
第１実施例（第１図〜第３図）
第１図〜第３図には、本発明に係る電力ケーブルの分岐
接続部の防水方法の第１実施例が示されている０本実施
例は、１本の幹線ケーブルに３本以上奇数本の分岐線を
接続する場合である。
この第１実施例においては、１本の幹線ケーブルに３本
以上奇数本の分岐線を接続する場合における実施例とし
て、１本の幹線ケーブルに３本の分岐線を接続した場合
について説明する。
第１図において、まず１分岐線１と分岐線２とを束ねた
外側に、内側にホットメルトの接着材８が塗布された熱
収縮性チューブ３を嵌合しておく。
しかる後、分岐線１．２のシース端部で１分岐線１と分
岐線２との間に熱溶融形テープ４を第１図図示矢印Ａに
示す如く挟み込む。次に、予め分岐線１．２の外側に嵌
合しである熱収縮性チューブ３を第１図図示矢印Ｂに示
す如く摺動して熱溶融形テープ４を挟み込んだ分岐線１
．２のシース端部の上に被覆する。そして、この熱収縮
性チューブ３の上から熱を加える。すると、この熱収縮
性チューブ３は、加熱収縮して分岐線１と分岐線２とを
外側から締め付けて、この分岐線１と分岐線２とを固着
する。この熱収縮性チューブ３を加熱する際に加えられ
る熱によって熱溶融形テープ４とホットメルトの接着材
８が融は出し分岐線１と分岐線２との間を封閉する。
この熱収縮性チューブ３は、熱収縮性を有する合成樹脂
によって構成されている。合成樹脂の熱収縮は、延伸履
歴をもつ高分子固体を加熱したときに、ある温度領域で
急激な収縮が起こる現象である。この加熱したときに生
じる合成樹脂の急激な収縮は、熱収縮を惹起する温度に
おいて、延伸を受けた状態で固定されていた高分子固体
の内部状態が、外部から加えられた熱によって合成樹脂
の組成状態の凍結が解かれて、延伸による張力の働いて
いないときに安定であるような状態へ戻ろうとするため
に生じるものである。合成樹脂の急激な収縮は、非品性
高分子においてはガラス移転温度付近において、結晶性
高分子においては融点に近いところで起こる。
この非品性高分子は、無定形高分子とも称され、結晶構
造が認められない高分子物質であり、例えば、ラジカル
重合によるポリ酢酸ビニル、ポリスチレンなどの高分子
である。この非品性高分子には、一般に構造が不規則（
共重合体、枝分かれ高分子など）であったり、かさ高い
側鎖をもち規則正しい構造を取り得ない高分子が含まれ
る。
また、結晶性高分子は、ポリエチレン、ナイロンなどＸ
線回折により明瞭な結晶構造が認められる高分子物質で
ある。この高分子化合物では、その鎖が長いため１００
％結晶化することはなく、結晶化の条件、熱処理などに
よって結晶化度（結晶化している分子の割合）が変わり
、ポリ塩化ビニルなどの結晶性の悪い高分子から、８０
〜９０％の結晶化度を持つ線状ポリエチレンまで種々の
結晶性重合体がある。
このように熱収縮性チューブ３を加熱収縮して分岐線１
と分岐１１ｔ２とを外側から締め付けて固着すると、こ
の分岐線１．２の上に分岐線５を載せて束ねる。この分
岐線１．２と分岐線５とを束ねた外側に、内側にホット
メルトの接着材９が塗布された熱収縮性の保護防水チュ
ーブ６を嵌合しておく。しかる後、分岐線１．２の上に
被覆されている熱収縮性チューブ３の上、分岐線５のシ
ース端部で、熱収縮性チューブ３と分岐線５との間に熱
溶融形テープ７を第２図図示矢印Ａに示す如く挟み込む
。次に、予め分岐線１．２と分岐線５とを束ねた外側に
嵌合しである熱収縮性の保護防水チューブ６を第２図図
示矢印Ｂに示す如く摺動して熱溶融形テープ７を挟み込
んだ分岐１ｗ！５のシース端部及び熱収縮性チューブ３
の上に被覆する。
そして、この熱収縮性の保護防水チューブ６の上から熱
を加える。すると、この熱収縮性の保護防水チューブ６
は、加熱収縮して熱収縮性チューブ３によって固着され
た分岐線１．２と分岐線５とを外側から締め付けて、こ
の分岐線１，２と分岐線５とを固着する。この熱収縮性
の保護防水チューブ６を加熱する際に加えられる熱によ
って熱溶融形テープ４とホットメルトの接着材９が融は
出し、第３図に示す如く、熱収縮性チューブ３と分岐ｗ
Ａ５との間を封閉する。
第２実施例（第４図〜第６図）
第４図〜第６図には、本発明に係る電力ケーブルの分岐
接続部の防水方法の第２実施例が示されている０本実施
例は、１本の幹線ケーブルに２本以上偶数本の分岐線を
接続する場合である。
この第２実施例においては、１本の幹線ケーブルに２本
以上偶数本の分岐線を接続する場合における実施例とし
て、１本の幹線ケーブルに４本の分岐線を接続した場合
について説明する。
第４図において、まず、分岐線１０と分岐１ｓ１１とを
第１図に示される要領と同様にして、分岐ｍｌｏと分岐
線１１との間に熱溶融形テープ１２を挟み込んで、この
外側に、内側にホットメルトの接着材１３が塗布された
熱収縮性チューブ１４を嵌合して加熱収縮して分岐線１
０と分岐線１１とを外側から締め付けて固着する。この
１組のケーブル４０を形成する。また、分岐ｌｌＡ１５
と分岐線１６とを第１図に示される要領と同様にして、
分岐、＠１５と分岐線１６との間に熱溶融形テープ１７
を挟み込んで、この外側に、内側にホットメルトの接着
材１８が塗布された熱収縮性チューブ１９を嵌合して加
熱収縮して分岐線１５と分岐線１６とを外側から締め付
けて固着する。この１組のケーブル５０を形成する。そ
して、このケーブル４０の上にケーブル５０を第４図図
示矢印Ａに示す如く重ね、このケーブル４０．５０の外
側に。
内側にホットメルトの接着材２０が塗布された熱収縮性
の保護防水チューブ２１を嵌合しておく。
しかる後、ケーブル４０の熱収縮性チューブ１４の上に
ケーブル５０の熱収縮性チューブ１９との間に第４図図
示矢印Ｂ示す如く熱溶融形テープ２２を挟み込む。
次に、予めケーブル４０．５ｏの外側に嵌合しである熱
収縮性チューブ２１を第５図図示矢印Ａに示す如く摺動
して熱溶融形テープ２２を挟み込んだケーブル４０．５
０の熱収縮性チューブ１４゜１９の上に被覆する。そし
て、この熱収縮性の保護防水チューブ２１の上から熱を
加える。すると、この熱収縮性の保護防水チューブ２１
は、加熱収縮してケーブル４０とケーブル５０とを外側
から締め付けて、このケーブル４ｏとケーブル５０とを
固着するにの熱収縮性の保護防水チューブ２１に熱が加
えられると、第６図に示す如く、熱収縮性の保護防水チ
ューブ２１を加熱する際に加えられる熱によって熱溶融
形テープ２２とホットメルトの接着材２０が融は出しケ
ーブル４０の熱収縮性チューブ１４とケーブル５０の熱
収縮性チューブ１９との間を封閉する。
なお、この熱収縮性チューブ１４．１９、熱収縮性の保
護防水チューブ２１は、熱収縮性チューブ３同様、熱収
縮性を有する合成樹脂によって構成されている。
【発明の効果１
本発明は、以上説明したように、１本の幹線ケーブルに
３本以上奇数本の分岐線を接続する場合、１本の幹線ケ
ーブルに３本以上奇数本の分岐線を接続した後、２本の
分岐線を１組として該２本の分岐線の間に絶縁シース端
から所定長さ熱溶融形テープを挟み込むと共に、該２本
の分岐線の外側にホットメルトの接着材付熱収縮形チュ
ーブを被覆して加熱収縮し、残り１本の分岐線と各組の
分岐線とをそれぞれ熱溶融形テープを介して重ね合わせ
外側に熱収縮性の保護防水チューブを被覆して加熱収縮
する構成しているため、３本以上奇数本の分岐線を接続
した場合に生じる各分岐線間の合わせ部に空隙部の発生
を防止して各分岐線間へ浸水するのを防止して分岐線側
の防水を確実にすることができる。
また、１本の幹線ケーブルに２本以上偶数本の分岐線を
接続する場合、１本の幹線ケーブルに２本以上偶数本の
分岐線を接続した後、２本の分岐線を１組として該２本
の分岐線の間に絶縁シース端から所定長さ熱溶融形テー
プを挟み込むと共に、該２本の分岐線の外側にホットメ
ルトの接着材付熱収縮形チューブを被覆して加熱収縮し
、各組の分岐線同志のそれぞれを熱溶融形テープを介し
て重ね合わせ外側に熱収縮性の保護防水チューブを被覆
して加熱収縮２本以上偶数本の分岐線を接続した場合に
生じる各分岐線間の合すせ部に空隙部の発生を防止して
各分岐線間へ浸水するのを防止して分岐線側の防水を確
実にすることができる。[Effect 1] When connecting three or more odd-numbered branch lines to one main cable, connect three or more odd-numbered branch lines to one main cable, and then connect the two branch lines as one set. A predetermined length of heat-melt tape is sandwiched from the end of the insulating sheath between the two branch wires, and a heat-shrinkable tube with hot-melt adhesive is coated on the outside of the two branch wires and heat-shrinked. , the remaining one branch wire and each set of branch wires are overlapped with heat-melting tape and covered with a heat-shrinkable protective waterproof tube on the outside and heat-shrinked, so three or more It is possible to prevent the formation of voids at the joints between each branch line that occur when an odd number of branch lines are connected, to prevent water from entering between each branch line, and to ensure waterproofing on the branch line side. can. In addition, when connecting two or more even-numbered branch lines to one main cable, after connecting two or more even-numbered branch lines to one main cable, the two branch lines are considered as one set. A predetermined length of heat-melt tape is sandwiched between the two branch wires from the end of the insulating sheath, and a heat-shrinkable tube with a hot-melt adhesive is coated on the outside of the two branch wires and heat-shrinked. Each branch line that occurs when two or more even number of heat-shrinkable branch lines are connected by overlapping each set of branch lines with a heat-melting tape and covering the outside with a heat-shrinkable protective waterproof tube. It is possible to prevent the generation of voids in the makeshift portion, prevent water from entering between the branch lines, and ensure waterproofing on the branch line side. [Examples] Examples of the present invention will be described below. First Embodiment (FIGS. 1 to 3) FIGS. 1 to 3 show a first embodiment of the waterproofing method for a branch connection part of a power cable according to the present invention. This is a case where three or more odd number branch lines are connected to one trunk cable. In this first embodiment, a case will be described in which three or more branch lines are connected to one main cable, and three or more branch lines are connected to one main cable. In FIG. 1, first, a heat-shrinkable tube 3 coated with a hot-melt adhesive 8 on the inside is fitted to the outside of the bundle of the first branch line 1 and the branch line 2. Thereafter, the heat-melting tape 4 is sandwiched between the first branch line 1 and the branch line 2 at the sheath end of the branch line 1.2 as shown by arrow A in FIG. Next, the heat-shrinkable tube 3, which has been previously fitted to the outside of the branch line 1.2, is slid as shown by the arrow B in FIG.
．． Coat over the sheath end of 2. Then, heat is applied from above this heat-shrinkable tube 3. Then, the heat-shrinkable tube 3 heat-shrinks and tightens the branch line 1 and the branch line 2 from the outside, thereby fixing the branch line 1 and the branch line 2 together. The heat applied when heating the heat-shrinkable tube 3 causes the heat-melting tape 4 and the hot-melt adhesive 8 to melt and seal the space between the branch line 1 and the branch line 2. This heat-shrinkable tube 3 is made of synthetic resin that has heat-shrinkable properties. Thermal shrinkage of synthetic resins is a phenomenon in which rapid shrinkage occurs in a certain temperature range when a polymer solid with a history of stretching is heated. This sudden contraction of synthetic resin that occurs when heated is due to the fact that at the temperature that causes thermal contraction, the internal state of the polymer solid that has been fixed in the stretched state changes due to the heat applied from the outside, causing the synthetic resin to shrink. This occurs because the compositional state is unfrozen and attempts to return to a state that is stable when no tension is applied due to stretching. Rapid shrinkage of synthetic resins occurs near the glass transition temperature in non-grade polymers, and near the melting point in crystalline polymers. This inferior polymer is also called an amorphous polymer, and is a polymer substance in which no crystal structure is recognized, and is, for example, a polymer such as polyvinyl acetate or polystyrene produced by radical polymerization. This inferior polymer generally has an irregular structure (
(copolymers, branched polymers, etc.) and polymers that have bulky side chains and cannot form regular structures. In addition, crystalline polymers include polyethylene, nylon, etc.
It is a polymeric substance with a clear crystal structure recognized by line diffraction. In this polymer compound, the chain is long, so 100
% crystallization, and the degree of crystallinity (percentage of crystallized molecules) changes depending on crystallization conditions, heat treatment, etc., ranging from polymers with poor crystallinity such as polyvinyl chloride to
There are various crystalline polymers ranging from linear polyethylene with a crystallinity of ~90%. In this way, the heat-shrinkable tube 3 is heated and shrunk to form the branch line 1.
After tightening and fixing the branch line 1.2 and the branch line 11t2 from the outside, the branch line 5 is placed on top of the branch line 1.2 and bundled. A heat-shrinkable protective waterproof tube 6 coated with a hot-melt adhesive 9 on the inside is fitted to the outside of the bundle of the branch lines 1.2 and 5. Thereafter, a heat-melting tape 7 is applied between the heat-shrinkable tube 3 and the branch line 5, at the sheath end of the branch line 5, over the heat-shrinkable tube 3 covered over the branch line 1.2. are sandwiched as shown by arrow A in FIG. Next, a heat-shrinkable protective waterproof tube 6 fitted on the outside of the branch wire 1.2 and the branch wire 5 bundled in advance is slid as shown by arrow B in FIG. Branch 1w with 7 in between! 5 sheath end and heat shrinkable tube 3
coat on top. Then, heat is applied from above this heat-shrinkable protective waterproof tube 6. Then, this heat-shrinkable protective waterproof tube 6
The branch wires 1 and 2 and the branch wire 5, which have been heat-shrinked and fixed by the heat-shrinkable tube 3, are tightened from the outside to fix the branch wires 1 and 2 and the branch wire 5. The heat applied when heating the heat-shrinkable protective waterproof tube 6 causes the heat-melting tape 4 and hot-melt adhesive 9 to melt, and as shown in FIG. 3, the heat-shrinkable tube 3 and the branch w.
Seal the space between A5 and A5. Second Embodiment (FIGS. 4 to 6) FIGS. 4 to 6 show a second embodiment of the waterproofing method for a branch connection of a power cable according to the present invention. This is a case where an even number of branch lines of two or more are connected to one trunk cable. In this second embodiment, a case will be described in which four branch lines are connected to one main cable, as an example in which two or more even number branch lines are connected to one main cable. In FIG. 4, first, the branch line 10 and the branch 1s11 are connected in the same manner as shown in FIG. A heat-shrinkable tube 14 coated with hot-melt adhesive 13 on the inside is fitted and heat-shrinked to form a branch line 1.
0 and the branch line 11 are tightened and fixed from the outside. This set of cables 40 is formed. Also, branch llA15
and the branch line 16 in the same manner as shown in FIG.
Heat-melting tape 17 between branch @15 and branch line 16
A heat-shrinkable tube 19 coated with a hot-melt adhesive 18 on the inside is fitted onto the outside of the tube and heat-shrinked to tighten and fix the branch wires 15 and 16 from the outside. This set of cables 50 is formed. Then, lay the cable 50 on top of this cable 40 as shown by the arrow A in FIG. 4, and place it on the outside of this cable 40.50. A heat-shrinkable protective waterproof tube 21 coated with a hot-melt adhesive 20 is fitted inside. Thereafter, the heat-melting tape 22 is sandwiched between the heat-shrinkable tube 14 of the cable 40 and the heat-shrinkable tube 19 of the cable 50, as shown by arrow B in FIG. Next, the heat-shrinkable tube 21, which has been previously fitted to the outside of the cable 40.5o, is slid as shown by arrow A in FIG.
0 heat shrinkable tube 14°19. Then, heat is applied from above this heat-shrinkable protective waterproof tube 21. Then, this heat-shrinkable protective waterproof tube 21
When heat is applied to the heat-shrinkable protective waterproof tube 21, which tightens the cables 40 and 50 from the outside and fixes the cables 4o and 50, as shown in FIG. As described above, the heat applied when heating the heat-shrinkable protective waterproof tube 21 causes the heat-melting tape 22 and the hot-melt adhesive 20 to melt, thereby reducing the heat-shrinkability of the heat-shrinkable tube 14 of the cable 40 and the cable 50. The space between the tube 19 and the tube 19 is sealed. Note that, like the heat-shrinkable tube 3, the heat-shrinkable tubes 14 and 19 and the heat-shrinkable protective waterproof tube 21 are made of synthetic resin having heat-shrinkable properties. Effect of the Invention 1 As explained above, in the case where three or more odd number branch lines are connected to one trunk cable, three or more odd number branch lines are connected to one trunk cable. After that, the two branch wires are made into a set, and a predetermined length of heat-melt tape is inserted from the end of the insulating sheath between the two branch wires, and a hot melt adhesive is placed on the outside of the two branch wires. The remaining one branch wire and each set of branch wires are overlapped with heat-melting tape, and a heat-shrinkable protective waterproof tube is coated on the outside. Because it has a structure that shrinks when heated, it prevents the formation of voids at the joints between the branch lines that occur when three or more odd number branch lines are connected, and prevents water from entering between the branch lines. Waterproofing on the branch line side can be ensured. In addition, when connecting two or more even-numbered branch lines to one main cable, after connecting two or more even-numbered branch lines to one main cable, the two branch lines are considered as one set. A predetermined length of heat-melt tape is sandwiched between the two branch wires from the end of the insulating sheath, and a heat-shrinkable tube with a hot-melt adhesive is coated on the outside of the two branch wires and heat-shrinked. Each branch line that occurs when two or more even number of heat-shrinkable branch lines are connected by overlapping each set of branch lines with a heat-melting tape and covering the outside with a heat-shrinkable protective waterproof tube. It is possible to prevent the generation of voids in the joints, prevent water from entering between the branch lines, and ensure waterproofing on the branch line side.
第１図〜第３図は本発明に係る電力ケーブルの分岐接続
部の防水方法の第１実施例を示すもので、第１図は２本
の分岐線を束ねる手順を説明するための図、第２図は第
１図で仕上がったケーブルに残りの分岐線を束ねる手順
を説明するための図、第３図は第２図で防水をした状態
のケーブルの断面図、第４図〜第６図は本発明に係る電
力ケーブルの分岐接続部の防水方法の第２実施例を示す
もので、第４図は２本１組のケーブルを２本束ねる手順
を説明するための図、第５図は第４図で仕上がったケー
ブルに熱収縮性の保護防水チューブを被覆する手順を説
明するための図、第６図は第５図で保護防水チューブを
被覆した状態のケーブルの断面図、第７図は従来の電力
ケーブルの分岐接続部の断面図、第８図は第７図図示分
岐接続部の縦断面図である。1 to 3 show a first embodiment of the waterproofing method for a branch connection part of a power cable according to the present invention, and FIG. 1 is a diagram for explaining the procedure for bundling two branch lines; Figure 2 is a diagram to explain the procedure for bundling the remaining branch lines to the cable finished in Figure 1, Figure 3 is a cross-sectional view of the cable in the waterproofed state in Figure 2, and Figures 4 to 6. The figures show a second embodiment of the waterproofing method for branch connections of power cables according to the present invention, FIG. 4 is a diagram for explaining the procedure for bundling two cables in a set, and FIG. Figure 4 is a diagram for explaining the procedure for covering the finished cable with a heat-shrinkable protective waterproof tube, Figure 6 is a cross-sectional view of the cable with the protective waterproof tube coated in Figure 5, and Figure 7 is a diagram for explaining the procedure for covering the finished cable with a protective waterproof tube. This figure is a sectional view of a branch connection part of a conventional power cable, and FIG. 8 is a longitudinal sectional view of the branch connection part shown in FIG. 7.
Claims (2)
接続する場合、１本の幹線ケーブルに３本以上奇数本の
分岐線を接続した後、２本の分岐線を１組として該２本
の分岐線の間に絶縁シース端から所定長さ熱溶融形テー
プを挟み込むと共に、該２本の分岐線の外側にホットメ
ルトの接着材付熱収縮形チューブを被覆して加熱収縮し
、残り１本の分岐線と各組の分岐線とをそれぞれ熱溶融
形テープを介して重ね合わせ外側に熱収縮性の保護防水
チューブを被覆して加熱収縮することにより、各分岐線
間の合わせ部に空隙部の発生を防止して各分岐線間へ浸
水を防止したことを特徴とする電力ケーブルの分岐接続
部の防水方法。(1) When connecting three or more odd-numbered branch lines to one trunk cable, connect three or more odd-numbered branch lines to one trunk cable, then connect the two branch lines as one set. A predetermined length of heat-melt tape is sandwiched from the end of the insulating sheath between the two branch wires, and a heat-shrinkable tube with hot-melt adhesive is coated on the outside of the two branch wires and heat-shrinked. , the remaining one branch line and each set of branch lines are overlapped with heat-melting tape, and the outside is coated with a heat-shrinkable protective waterproof tube and heat-shrinked to join each branch line. A method for waterproofing a branch connection part of a power cable, characterized in that water intrusion between branch lines is prevented by preventing the formation of voids in the part.
接続する場合、１本の幹線ケーブルに２本以上偶数本の
分岐線を接続した後、２本の分岐線を１組として該２本
の分岐線の間に絶縁シース端から所定長さ熱溶融形テー
プを挟み込むと共に、該２本の分岐線の外側にホットメ
ルトの接着材付熱収縮形チューブを被覆して加熱収縮し
、各組の分岐線同志のそれぞれを熱溶融形テープを介し
て重ね合わせ外側に熱収縮性の保護防水チューブを被覆
して加熱収縮することにより、各分岐線間の合わせ部に
空隙部の発生を防止して各分岐線間へ浸水を防止したこ
とを特徴とする電力ケーブルの分岐接続部の防水方法。(2) When connecting two or more even-numbered branch lines to one main cable, connect two or more even-numbered branch lines to one main cable, and then consider the two branch lines as one set. A predetermined length of heat-melt tape is sandwiched from the end of the insulating sheath between the two branch wires, and a heat-shrinkable tube with hot-melt adhesive is coated on the outside of the two branch wires and heat-shrinked. By overlapping each set of branch lines with heat-melting tape, covering the outside with a heat-shrinkable protective waterproof tube, and shrinking it by heating, a void is created at the joint between each branch line. A waterproofing method for a branch connection part of a power cable, characterized in that water is prevented from entering between each branch line by preventing water from entering between the branch lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28915888A JPH02223168A (en) | 1988-11-16 | 1988-11-16 | Waterproofing method for branch connection section of power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28915888A JPH02223168A (en) | 1988-11-16 | 1988-11-16 | Waterproofing method for branch connection section of power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02223168A true JPH02223168A (en) | 1990-09-05 |
| JPH0468753B2 JPH0468753B2 (en) | 1992-11-04 |
Family
ID=17739513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28915888A Granted JPH02223168A (en) | 1988-11-16 | 1988-11-16 | Waterproofing method for branch connection section of power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02223168A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002085370A (en) * | 2000-09-13 | 2002-03-26 | Toshiba Corp | Magnetic resonance imaging apparatus |
| KR100857560B1 (en) * | 2007-07-23 | 2008-09-09 | 경신공업 주식회사 | Structure of coating for preventing leak in cable |
| JP2010205465A (en) * | 2009-03-02 | 2010-09-16 | Sparkling Lights Kk | Decorative illumination device and method of manufacturing the same |
| JP2013211125A (en) * | 2012-03-30 | 2013-10-10 | Yazaki Corp | Terminal cutoff, waterproof, and anticorrosive structure, and terminal cutoff, waterproof, and anticorrosive method |
-
1988
- 1988-11-16 JP JP28915888A patent/JPH02223168A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002085370A (en) * | 2000-09-13 | 2002-03-26 | Toshiba Corp | Magnetic resonance imaging apparatus |
| KR100857560B1 (en) * | 2007-07-23 | 2008-09-09 | 경신공업 주식회사 | Structure of coating for preventing leak in cable |
| JP2010205465A (en) * | 2009-03-02 | 2010-09-16 | Sparkling Lights Kk | Decorative illumination device and method of manufacturing the same |
| JP2013211125A (en) * | 2012-03-30 | 2013-10-10 | Yazaki Corp | Terminal cutoff, waterproof, and anticorrosive structure, and terminal cutoff, waterproof, and anticorrosive method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0468753B2 (en) | 1992-11-04 |
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