JP2010192128A - Water cut-off treatment method of electric wire, and water cut-off structure of electric wire - Google Patents

Water cut-off treatment method of electric wire, and water cut-off structure of electric wire Download PDF

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JP2010192128A
JP2010192128A JP2009032140A JP2009032140A JP2010192128A JP 2010192128 A JP2010192128 A JP 2010192128A JP 2009032140 A JP2009032140 A JP 2009032140A JP 2009032140 A JP2009032140 A JP 2009032140A JP 2010192128 A JP2010192128 A JP 2010192128A
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electric wire
water
connecting portion
cap
treatment
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Shinnosuke Kanehara
新之介 金原
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Asti Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water cut-off treatment method of electric wire and a water cut-off structure of electric wire wherein a desired water cut-off effect can be obtained without spoiling at all flexibility required as the electric wire. <P>SOLUTION: A polyurethane agent is filled in a cap and a connecting part of an electric wire is inserted in the cap to be immersed in the polyurethane agent, thereby, the connecting part is applied with water cut-off treatment. Even after hardening, flexibility as the electric wire is not spoiled and there arises no complicated work such as to apply water cut-off treatment for every wire, and the required water cut-off effect is certainly presented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電線の止水処理方法と電線の止水構造に係り、特に、キャップ内にポリウレタン剤を充填すると共にそこに電線の接続部を浸漬させることにより所望の止水処理を施すように工夫したものに関する。 The present invention relates to an electric wire water-stop treatment method and an electric wire water-stop structure, and in particular, a cap is filled with a polyurethane agent and a desired water-stop treatment is performed by immersing the connection portion of the electric wire therein. It relates to something that was devised.

例えば、各種車両に搭載されているハーネスにおいては、敷設されている電線に各種電子機器が接続されている。この種の電線の接続部において何等の止水処理も施されていない場合には、その接続部より電線内に水が浸入して電線内を通って接続されている電子機器に至ってしまうことになる。電子機器に水が浸入した場合には、電子機器内にて短絡状態となり、電子機器を損傷させてしまうおそれがあった。 For example, in a harness mounted on various vehicles, various electronic devices are connected to a laid electric wire. If no water stop treatment is applied at the connection part of this type of electric wire, water will enter the electric wire from the connection part, leading to an electronic device connected through the electric wire. Become. When water invades the electronic device, there is a possibility that the electronic device is damaged due to a short circuit in the electronic device.

そこで、従来からそのような電線の接続部に様々な止水処理が施されている。そのような止水処理の一例を図３に示す。図３に示すように、まず、複数本の電線１０１があり、これら電線１０１は絶縁被覆１０３内に導体１０５を収容した構成になっている。上記複数本の電線１０１の先端部においては絶縁被覆１０３が剥ぎ取られていて導体１０５が露出されている。それら露出された導体１０５同士は接続されていて接続部１０７となっている。この接続部１０７の複数本の導体１０５は端子１０９によって束ねられている。 Therefore, various water-stopping treatments have conventionally been applied to such electric wire connecting portions. An example of such a water stop process is shown in FIG. As shown in FIG. 3, first, there are a plurality of electric wires 101, and these electric wires 101 are configured such that a conductor 105 is accommodated in an insulating coating 103. The insulating coating 103 is peeled off at the tip ends of the plurality of electric wires 101, and the conductor 105 is exposed. The exposed conductors 105 are connected to each other to form a connection portion 107. A plurality of conductors 105 of the connecting portion 107 are bundled by terminals 109.

上記構成をなす電線１０１の接続部１０７はＰＶＣキャップ１１１内に収容されている。そして、上記ＰＶＣキャップ１１１の開口部１１１ａ側にはテープ１１３が巻き付けられていた。   The connecting portion 107 of the electric wire 101 having the above configuration is accommodated in the PVC cap 111. And the tape 113 was wound around the opening 111a side of the PVC cap 111.

しかしながら、上記構成では所望の防水性能を得ることはできなかった。そこで、図４、図５に示すような止水処理が提案されている。まず、図４に示す場合であるが、各電線１０１に対して絶縁被覆１０３を部分的に剥ぎ取って導体１０５を露出させる。その露出された導体１０５に半田１１５を滴下する。滴下された半田１１５は絶縁被覆１０３内に含浸されていき、それによって、所望の防水処理を施すものである。   However, with the above configuration, the desired waterproof performance could not be obtained. Therefore, a water stop treatment as shown in FIGS. 4 and 5 has been proposed. First, as shown in FIG. 4, the insulating coating 103 is partially peeled off from each electric wire 101 to expose the conductor 105. Solder 115 is dropped on the exposed conductor 105. The dropped solder 115 is impregnated in the insulating coating 103, thereby applying a desired waterproofing treatment.

又、図５に示す場合には、各電線１０１に対してその接続部を熱収縮性チューブ１１７によって覆う。そして、熱処理によって熱収縮性チューブ１１７が収縮することにより、所望の防水処理を施すものである。   Further, in the case shown in FIG. 5, the connection portion of each electric wire 101 is covered with a heat shrinkable tube 117. Then, the heat-shrinkable tube 117 is contracted by heat treatment, so that a desired waterproofing treatment is performed.

その他にも様々な止水処理を開示したものがあるが、例えば、シリコーンを使用した止水処理を開示したものとして、例えば、特許文献１がある。 There are others that disclose various water stop treatments. For example, Patent Document 1 discloses a water stop treatment using silicone.

特開２００８−２２６８３６号公報JP 2008-226836 A

上記従来の構成によると次のような問題があった。まず、図４に示す半田１１５を滴下・含浸させる方法の場合には、その半田１１５の滴下・含浸部分が硬化してまって電線としての柔軟性が損なわれてしまうという問題があった。そして、その硬化した部位が繰り返し屈曲された場合には破断してしまうおそれがあった。又、各電線１０１毎に処理を施す必要があり面倒であった。   The conventional configuration has the following problems. First, in the case of the method of dripping / impregnating the solder 115 shown in FIG. 4, there is a problem that the dripping / impregnation portion of the solder 115 is cured and the flexibility as the electric wire is impaired. And when the hardened | cured site | part was bent repeatedly, there existed a possibility of fracture | rupturing. In addition, it is necessary to process each electric wire 101, which is troublesome.

又、図５に示す熱収縮性チューブ１１７の場合であるが、この場合にも電線としての柔軟性が損なわれてしまうという問題があった。又、各電線１０１毎に処理を施す必要があり面倒であり、且つ、全ての電線１０１に対して処理を施すことはできなかった。   Moreover, although it is a case of the heat-shrinkable tube 117 shown in FIG. 5, there also existed a problem that the softness | flexibility as an electric wire will be impaired in this case. Moreover, it is necessary to perform the processing for each electric wire 101, which is troublesome, and the processing cannot be performed for all the electric wires 101.

本発明はこのような点に基づいてなされたものでその目的とするところは、電線として必要な柔軟性を何等損なうことなく所望の止水効果を得ることができるように工夫した電線の止水処理方法と電線の止水構造を提供することにある。 The present invention has been made on the basis of such points, and the object of the present invention is to provide a water stop for an electric wire devised so that a desired water stop effect can be obtained without any loss of flexibility required for the electric wire. It is in providing the processing method and the water stop structure of an electric wire.

上記目的を達成するべく本願発明の請求項１による電線の止水処理方法は、キャップ内にポリウレタン剤を充填すると共に電線の接続部を挿入して上記充填されたポリウレタン剤中に浸漬させ、それによって、上記接続部に止水処理を施すようにしたことを特徴とするものである。
又、請求項２による電線の止水処理方法は、請求項１記載の電線の止水処理方法において、キャップ内にポリウレタン剤を充填し、そこに電線の接続部を挿入して上記充填されたポリウレタン剤中に浸漬させ、それによって、上記接続部に止水処理を施すようにしたことを特徴とするものである。
又、請求項３による電線の止水処理方法は、請求項２記載の電線の止水処理方法において、上記電線の接続部の絶縁被覆の端から１０ｍｍ以上上の部分までがポリウレタン剤中に浸漬されるようにポリウレタン剤の充填量を調整するようにしたことを特徴とするものである。
又、請求項４による電線の止水構造は、電線の接続部を収容するキャップと、上記キャップ内に充填されて硬化するポリウレタン剤と、を具備し、上記充填されたポリウレタン剤が上記電線の接続部に浸入して硬化することにより止水機能を発揮するように構成されたことを特徴とするものである。 In order to achieve the above object, a method for water stoppage treatment of an electric wire according to claim 1 of the present invention is to fill a cap with a polyurethane agent, insert a connecting portion of the electric wire and immerse in the filled polyurethane agent, Thus, a water stop treatment is applied to the connecting portion.
Moreover, the water-stopping treatment method for electric wires according to claim 2 is the water-stopping treatment method for electric wires according to claim 1, wherein the cap is filled with a polyurethane agent, and a connecting portion of the electric wires is inserted therein to fill the above-described filling. It is characterized in that it is immersed in a polyurethane agent, whereby a water stop treatment is applied to the connecting portion.
Further, the method of water stoppage treatment of an electric wire according to claim 3 is the method of water stoppage treatment of the electric wire according to claim 2, wherein a portion of the wire connecting portion above the end of the insulation coating is immersed in the polyurethane agent by 10 mm or more. As described above, the filling amount of the polyurethane agent is adjusted.
According to a fourth aspect of the present invention, there is provided a water stop structure for an electric wire, comprising: a cap that accommodates a connecting portion of the electric wire; and a polyurethane agent that is filled in the cap and hardened, and the filled polyurethane agent is used for the electric wire. It is characterized in that it is configured to exhibit a water-stop function by entering into the connecting portion and curing.

以上説明したように本願発明の請求項１による電線の止水処理方法は、キャップ内にポリウレタン剤を充填すると共に電線の接続部を挿入して上記充填されたポリウレタン剤中に浸漬させ、それによって、上記接続部に止水処理を施すようにしたので、まず硬化後においても電線としての柔軟性を損なうようなことはない。各電線毎に止水処理を施すといった煩雑な作業はなく簡単である。又、必要な止水効果についてはこれを確実に提供することができる。すなわち、ポリウレタン剤１３が毛細管現象によって接続部内に隙間なく入り込んで硬化するからである。
又、請求項２による電線の止水処理方法は、請求項１記載の電線の止水処理方法において、キャップ内にポリウレタン剤を充填し、そこに電線の接続部を挿入して上記充填されたポリウレタン剤中に浸漬させ、それによって、上記接続部に止水処理を施すようにしたことを特徴とするものであり、それによって、上記効果を確実に得ることができるものである。
又、請求項３による電線の止水処理方法は、請求項２記載の電線の止水処理方法において、上記電線の接続部の絶縁被覆の端から１０ｍｍ以上上の部分までがポリウレタン剤中に浸漬されるようにポリウレタン剤の充填量を調整するようにしたことを特徴とするものであり、それによって、上記効果をより確実なものとすることができる。
又、請求項４は本発明を電線の止水構造としてクレームしたものである。 As described above, in the method for water stoppage treatment of the electric wire according to claim 1 of the present invention, the cap is filled with the polyurethane agent and the connecting portion of the electric wire is inserted and immersed in the filled polyurethane agent, thereby Since the water-stopping treatment is performed on the connecting portion, the flexibility as the electric wire is not impaired even after the curing. There is no complicated work such as water stop treatment for each electric wire, and it is easy. Moreover, this can be provided reliably about the required water stop effect. That is, the polyurethane agent 13 enters the connecting portion without a gap by the capillary phenomenon and is cured.
Moreover, the water-stopping treatment method for electric wires according to claim 2 is the water-stopping treatment method for electric wires according to claim 1, wherein the cap is filled with a polyurethane agent, and a connecting portion of the electric wires is inserted therein to fill the above-described filling. It is characterized in that it is immersed in a polyurethane agent, whereby a water-stopping treatment is performed on the connecting portion, whereby the above-mentioned effect can be obtained with certainty.
Further, the method of water stoppage treatment of an electric wire according to claim 3 is the method of water stoppage treatment of the electric wire according to claim 2, wherein a portion of the wire connecting portion above the end of the insulation coating is immersed in the polyurethane agent by 10 mm or more. As described above, the filling amount of the polyurethane agent is adjusted, so that the above effect can be further ensured.
Further, claim 4 claims the present invention as a water-stop structure for electric wires.

本発明の一実施の形態を示す図で、電線の止水処理方法を示す正面図である。It is a figure which shows one embodiment of this invention, and is a front view which shows the water stop processing method of an electric wire. 本発明の一実施の形態を示す図で、電線の構造を一部切り欠いて示す図である。It is a figure which shows one embodiment of this invention, and is a figure which notches and shows the structure of an electric wire partially. 従来例を示す図で、電線の止水処理方法を示す正面図である。It is a figure which shows a prior art example, and is a front view which shows the water stop processing method of an electric wire. 従来例を示す図で、電線の止水処理方法を示す正面図である。It is a figure which shows a prior art example, and is a front view which shows the water stop processing method of an electric wire. 従来例を示す図で、電線の止水処理方法を示す正面図である。It is a figure which shows a prior art example, and is a front view which shows the water stop processing method of an electric wire.

以下、図１及び図２を参照して本発明の一実施の形態を説明する。まず、複数本の電線１があり、これら電線１は、図２に拡大して示すように、絶縁被覆３内に導体５を収容した構成になっている。上記各電線１の先端部は絶縁被覆３が剥ぎ取られていて導体５が露出されている。それら露出された導体５が接続されていて接続部７となっている。この接続部７は端子９によって束ねられている。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. First, there are a plurality of electric wires 1, and these electric wires 1 have a configuration in which a conductor 5 is accommodated in an insulating coating 3 as shown in an enlarged view in FIG. 2. The insulating coating 3 is stripped off at the tip of each of the wires 1 so that the conductor 5 is exposed. These exposed conductors 5 are connected to form a connection portion 7. The connection portion 7 is bundled by terminals 9.

上記接続部７はＰＶＣ（ポリ塩化ビニール）キャップ１１内に挿入されている。又、上記ＰＶＣキャップ１１内にはポリウレタン剤１３が充填・硬化されている。それによって、所望の止水機能を発揮するように構成されている。 The connecting portion 7 is inserted into a PVC (polyvinyl chloride) cap 11. The PVC cap 11 is filled and cured with a polyurethane agent 13. Thereby, it is comprised so that a desired water stop function may be exhibited.

次に、接続部７に止水処理を施す手順を説明する。まず、ＰＶＣキャップ１１内にポリウレタン剤１３を充填する。次に、上記電線１の接続部をＰＶＣキャップ１１内に挿入し接続部７を上記ポリウレタン剤１３中に浸漬させる。その際、接続部７の絶縁被覆３の縁から略１０ｍｍ以上上の部分までがポリウレタン剤１３内に浸漬されるようにポリウレタン剤１３の量を調整する。電線１をＰＶＣキャップ１１内に挿入した後にポリウレタン剤１３の量を微調整する。それによって、止水処理を施す。すなわち、ポリウレタン剤１３が各電線間或いは各電線１の絶縁被覆３内に浸入して硬化することになるからである。 Next, a procedure for applying a water stop treatment to the connecting portion 7 will be described. First, the polyurethane agent 13 is filled in the PVC cap 11. Next, the connecting portion of the electric wire 1 is inserted into the PVC cap 11 and the connecting portion 7 is immersed in the polyurethane agent 13. At that time, the amount of the polyurethane agent 13 is adjusted so that the portion from the edge of the insulating coating 3 of the connecting portion 7 to a portion approximately 10 mm or more above is immersed in the polyurethane agent 13. After the electric wire 1 is inserted into the PVC cap 11, the amount of the polyurethane agent 13 is finely adjusted. Thereby, a water stop treatment is applied. That is, the polyurethane agent 13 penetrates between the electric wires or in the insulating coating 3 of the electric wires 1 and is cured.

以上本実施の形態によると次のような効果を奏することができる。
まず、止水材料としてポリウレタン剤１３を使用しているので、硬化後においても電線としての柔軟性を損なうようなことはない。
又、複数本の電線１を束ねた場合においても各電線５毎に止水処理を施すといった煩雑な作業はなく簡単である。
又、必要な止水効果についてはこれを確実に提供することができる。すなわち、ポリウレタン剤１３が毛細管現象によって電線１間や各電線１の絶縁被覆３内に隙間なく入り込んで硬化するからである。 As described above, according to the present embodiment, the following effects can be obtained.
First, since the polyurethane agent 13 is used as a water stop material, the flexibility as an electric wire is not impaired even after curing.
Further, even when a plurality of electric wires 1 are bundled, there is no complicated operation of performing a water stop treatment for each electric wire 5 and it is easy.
Moreover, this can be provided reliably about the required water stop effect. That is, because the polyurethane agent 13 enters between the electric wires 1 or into the insulating coating 3 of each electric wire 1 without a gap due to a capillary phenomenon and hardens.

尚、本発明は前記一実施の形態に限定されるものではない。
例えば、前記一実施の形態の場合には、剥ぎ取られた絶縁被覆３の端から１０ｍｍ以上上の部分までがポリウレタン剤中に浸漬されるように構成したが、それに限定されるものではない。
又、キャップについてはその構成を特に限定するものではなく様々な形状、材質のキャップの使用が想定される。
又、キャップ内に電線を先に挿入するか或いはポリウレタン剤を先に充填するかは任意である。
その他図示した構成はあくまで一例である。 The present invention is not limited to the one embodiment.
For example, in the case of the above-described embodiment, the configuration is such that the portion up to 10 mm or more from the end of the stripped insulating coating 3 is immersed in the polyurethane agent, but is not limited thereto.
Further, the configuration of the cap is not particularly limited, and it is assumed that caps of various shapes and materials are used.
It is optional whether the electric wire is inserted into the cap first or the polyurethane agent is filled first.
The other illustrated configurations are merely examples.

本発明は、電線の止水処理方法と電線の止水構造に係り、特に、ＰＶＣキャップ内にポリウレタン剤を充填し、そこに電線の接続部を浸漬させることにより所望の止水処理を施すように工夫したものに関し、例えば、各種車両に搭載される車両用ハーネスにおける電線の止水処理に好適である。 The present invention relates to an electric wire water stop treatment method and an electric wire water stop structure, and in particular, a polyurethane cap is filled in a PVC cap and a desired water stop treatment is performed by immersing the connecting portion of the electric wire therein. For example, it is suitable for water stop treatment of electric wires in vehicle harnesses mounted on various vehicles.

１ 電線
３ 絶縁被覆
５ 導体
７ 接続部
９ 端子
１１ ＰＶＣキャップ（キャップ）
１３ ポリウレタン剤
DESCRIPTION OF SYMBOLS 1 Electric wire 3 Insulation coating 5 Conductor 7 Connection part 9 Terminal 11 PVC cap (cap)
13 Polyurethane agent

Claims (4)

キャップ内にポリウレタン剤を充填すると共に電線の接続部を挿入して上記充填されたポリウレタン剤中に浸漬させ、それによって、上記接続部に止水処理を施すようにしたことを特徴とする電線の止水処理方法。 The cap is filled with a polyurethane agent and the connecting portion of the electric wire is inserted and immersed in the filled polyurethane agent, so that the connecting portion is subjected to a water stop treatment. Water stop treatment method. 請求項１記載の電線の止水処理方法において、
キャップ内にポリウレタン剤を充填し、そこに電線の接続部を挿入して上記充填されたポリウレタン剤中に浸漬させ、それによって、上記接続部に止水処理を施すようにしたことを特徴とする電線の止水処理方法。 In the water stop processing method of the electric wire according to claim 1,
The cap is filled with a polyurethane agent, and a connecting portion of an electric wire is inserted into the cap and immersed in the filled polyurethane agent, whereby a water-stopping treatment is performed on the connecting portion. Method for water stop treatment of electric wires. 請求項２記載の電線の止水処理方法において、
上記電線の接続部の絶縁被覆の端から１０ｍｍ以上上の部分までがポリウレタン剤中に浸漬されるようにポリウレタン剤の充填量を調整するようにしたことを特徴とする電線の止水処理方法。 In the electric still water processing method of Claim 2,
A method for water stopping treatment of an electric wire, wherein the filling amount of the polyurethane agent is adjusted so that a portion up to 10 mm or more from the end of the insulating coating of the connecting portion of the electric wire is immersed in the polyurethane agent. 電線の接続部を収容するキャップと、上記キャップ内に充填されて硬化するポリウレタン剤と、を具備し、上記充填されたポリウレタン剤が上記電線の接続部に浸入して硬化することにより止水機能を発揮するように構成されたことを特徴とする電線の止水構造。
A cap for accommodating the connecting portion of the electric wire, and a polyurethane agent that fills and hardens the cap, and the filled polyurethane agent penetrates into the connecting portion of the electric wire and cures to stop water. A water-stop structure for electric wires, which is configured to exhibit
JP2009032140A 2009-02-16 2009-02-16 Water cut-off treatment method of electric wire, and water cut-off structure of electric wire Pending JP2010192128A (en)

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JPH10243539A (en) * 1996-12-25 1998-09-11 Yazaki Corp Structure and method for water-proofing spliced electric wire
JPH11232935A (en) * 1998-02-16 1999-08-27 Furukawa Electric Co Ltd:The Waterproof structure for automobile harness
JP2003009334A (en) * 2001-06-19 2003-01-10 Furukawa Electric Co Ltd:The Moisture-blocking structure and moisture-blocking method between conductors in welded part of wire
JP2005005150A (en) * 2003-06-12 2005-01-06 Yazaki Corp Connecting cap and cable connecting method using it
JP2005261184A (en) * 2004-02-13 2005-09-22 Yazaki Corp Insulating cap and joint electric wire using the same
JP2006024496A (en) * 2004-07-09 2006-01-26 Yazaki Corp Electric wire protection cap
WO2006129477A1 (en) * 2005-06-02 2006-12-07 Sumitomo Wiring Systems, Ltd. Method for waterproofing joint part in electric wire terminal and waterproof structure
JP2007103143A (en) * 2005-10-04 2007-04-19 Yazaki Corp Harness manufacturing device, treatment method of wire joint part and wire harness
JP2007252148A (en) * 2006-03-17 2007-09-27 Fujikura Ltd Cap, cable termination structure, and cable terminating method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10243539A (en) * 1996-12-25 1998-09-11 Yazaki Corp Structure and method for water-proofing spliced electric wire
JPH11232935A (en) * 1998-02-16 1999-08-27 Furukawa Electric Co Ltd:The Waterproof structure for automobile harness
JP2003009334A (en) * 2001-06-19 2003-01-10 Furukawa Electric Co Ltd:The Moisture-blocking structure and moisture-blocking method between conductors in welded part of wire
JP2005005150A (en) * 2003-06-12 2005-01-06 Yazaki Corp Connecting cap and cable connecting method using it
JP2005261184A (en) * 2004-02-13 2005-09-22 Yazaki Corp Insulating cap and joint electric wire using the same
JP2006024496A (en) * 2004-07-09 2006-01-26 Yazaki Corp Electric wire protection cap
WO2006129477A1 (en) * 2005-06-02 2006-12-07 Sumitomo Wiring Systems, Ltd. Method for waterproofing joint part in electric wire terminal and waterproof structure
JP2007103143A (en) * 2005-10-04 2007-04-19 Yazaki Corp Harness manufacturing device, treatment method of wire joint part and wire harness
JP2007252148A (en) * 2006-03-17 2007-09-27 Fujikura Ltd Cap, cable termination structure, and cable terminating method

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