JP2011065911A - Shield wire having water-stopping section and method for forming water-stopping section of shield wire - Google Patents

Shield wire having water-stopping section and method for forming water-stopping section of shield wire Download PDF

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JP2011065911A
JP2011065911A JP2009216574A JP2009216574A JP2011065911A JP 2011065911 A JP2011065911 A JP 2011065911A JP 2009216574 A JP2009216574 A JP 2009216574A JP 2009216574 A JP2009216574 A JP 2009216574A JP 2011065911 A JP2011065911 A JP 2011065911A
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sheath
water
wire
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terminal
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Nobunori Uchiyama
宜則 内山
Takeji Ito
武治 伊藤
Yasushi Atsumi
泰 渥美
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Sumitomo Wiring Systems Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-stopping section which is excellent on water-stopping performance of a shield wire and hardly enlarges its outer diameter. <P>SOLUTION: In the shield wire 1 in which a plurality of core wires 2 are covered with shield layers 4 and the shield layer is covered with a sheath 5 made of an insulating resin outer cover, an intermediate cut 11 of the sheath 5 is set at a position separated at a designated dimension from a cutting position P1 for cover-peeling to a sheath remaining side, a melted water-stopping agent 15 is filled up from the intermediate cut to inside the shield wire, and an adhesive tape 12 with a narrow width is wound at half-lapped winding so as to cover an outer peripheral surface of the sheath where the intermediate cut is arranged, or an adhesive tape with a wide width is wound around the outer peripheral surface of the sheath. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は止水部を備えたシールド電線および該シールド電線の止水部の形成方法に関し、特に、車両の浸水領域から車室内等の非浸水領域に配索するシールド電線が、浸水領域においてシールド電線中に侵入した水が非浸水領域の端末側まで伝わるのを遮断する止水部を備えたものである。    The present invention relates to a shielded electric wire having a water stop and a method for forming the water stop of the shielded electric wire, and more particularly, a shielded electric cable routed from a water immersion area of a vehicle to a non-water immersion area such as a passenger compartment is shielded in the water immersion area. The water stop part which interrupts | blocks that the water which penetrate | invaded in the electric wire penetrates to the terminal side of a non-immersed area | region is provided.

自動車に配索される電線のうち、特に、ノイズに対する遮蔽が要求される配索領域にはシールド電線が用いられている。図６（Ａ）に示すように、シールド電線１００は複数本の絶縁被覆電線からなるコア線１０２とアース用のドレン線１０３とを金属箔や金属網チューブからなるシールド層１０４で被覆し、該シールド層１０４を絶縁樹脂層の外皮からなるシース１０５で被覆している（特開２００２−２０８３２１号公報参照）。   Among electric wires arranged in an automobile, shielded electric wires are used particularly in an arrangement region where shielding against noise is required. As shown in FIG. 6 (A), a shielded electric wire 100 is formed by covering a core wire 102 made of a plurality of insulated coated wires and a ground drain wire 103 with a shield layer 104 made of a metal foil or a metal mesh tube, The shield layer 104 is covered with a sheath 105 made of an outer layer of an insulating resin layer (see Japanese Patent Application Laid-Open No. 2002-208321).

シールド電線１００は、通常、図６（Ｂ）に示すように、両端末に端子金具１０７、１０８を圧着接続し、これら端子金具１０７、１０８をコネクタ１０９Ａ、１０９Ｂに挿入し、該コネクタを機器のコネクタ収容部に嵌合し、または、他の電線端末のコネクタと嵌合接続している。
前記シールド電線１の両端末では、シース１０５とシールド層１０４とを約８０〜２００ｍｍにわたって皮剥ぎし、露出させたコア線１０２の端末を更に皮剥ぎして端子金具１０７、１０８を圧着している。 As shown in FIG. 6 (B), the shielded electric wire 100 usually has terminal fittings 107 and 108 connected to both ends by crimping, and these terminal fittings 107 and 108 are inserted into connectors 109A and 109B. It fits into the connector housing, or is fitted and connected to a connector of another electric wire end.
At both ends of the shielded electric wire 1, the sheath 105 and the shield layer 104 are peeled over about 80 to 200 mm, and the exposed end of the core wire 102 is further peeled to crimp the terminal fittings 107 and 108. .

前記シールド電線１００では、複数のコア線１０２の間、コア線１０２とシールド層１０４の間、シールド層１０４とシース１０５の間に空隙が存在する。よって、シールド電線１００の端子金具を接続した端末が浸水領域に位置すると、該端子金具と接続するコネクタは防水コネクタとする等の防水対策がなされる。
しかしながら、浸水領域側の皮剥端に開口する空隙を通してシールド電線１００の内部に水が伝わり、シールド電線１００の他端末に接続した端子側へと浸水が生じる恐れがある。このシールド電線１００の他端が非浸水領域に配線されると、該端末の端子は非防水コネクタに挿入されるため、シールド電線１００の浸水領域側からの浸水を非浸水領域側の端子に達するまでに止水する必要がある。 In the shielded electric wire 100, there are voids between the core wires 102, between the core wires 102 and the shield layer 104, and between the shield layer 104 and the sheath 105. Therefore, when the terminal to which the terminal fitting of the shielded electric wire 100 is connected is located in the flooded area, a waterproof measure is taken such that the connector connected to the terminal fitting is a waterproof connector.
However, there is a possibility that water is transmitted to the inside of the shielded electric wire 100 through the gap opened at the peeled end on the flooded region side, and the water is generated on the terminal side connected to the other end of the shielded electric wire 100. When the other end of the shielded electric wire 100 is wired in the non-water-immersed region, the terminal of the terminal is inserted into the non-waterproof connector, so that the water from the water-immersed region side of the shielded wire 100 reaches the terminal on the non-water-immersed region side. It is necessary to stop the water before.

前記シールド電線の止水対策として、図７（Ａ）（Ｂ）に示すように、シールド電線１００の皮剥位置Ｐでシリコーンからなる止水剤１２０を注入し、前記シールド電線１００の空隙に止水剤１２０を充填し、その後、皮剥位置Ｐを挟んでシース１０５の外周から露出させたコア線１０２の外周にかけて止水機能を有するブチルパッド１２１を巻き付けて、止水部１２２を設けている場合が多い。該ブチルパッド１２１の厚さは１．５ｍｍ〜３ｍｍ程度である。   7A and 7B, a waterproofing agent 120 made of silicone is injected at the peeled position P of the shielded electric wire 100, and water is stopped in the gap of the shielded electric wire 100. In some cases, the water stop portion 122 is provided by filling the agent 120 and then winding the butyl pad 121 having a water stop function around the outer periphery of the core wire 102 exposed from the outer periphery of the sheath 105 with the peeling position P interposed therebetween. Many. The thickness of the butyl pad 121 is about 1.5 mm to 3 mm.

特開２００２−２０８３２１号公報JP 2002-208321 A

前記図７に示す止水部１２２を設けた場合、ブチルパッド１２１が厚肉であるため、止水部１２２の外径が肥大化し、シールド電線１００が多数本あるセンサー系の回路が重なるワイヤハーネスでは、該ワイヤハーネスが外装材のコルゲートチューブ内に収容できない問題がある。
また、シールド電線１００のシース１０５の切断位置で止水剤を硬化させて止水部を形成していると、サーマルショックや車両振動で止水部が破壊されるおそれがある。特に、シース１０５とコア線１０２との熱収縮率の相違により、止水部にズレが生じる恐れがある。このズレは前記サーマルショックや車両振動をうけて増長し、止水性を維持できなくなる恐れがある。 When the water stop part 122 shown in FIG. 7 is provided, since the butyl pad 121 is thick, the outer diameter of the water stop part 122 is enlarged, and a wire harness in which a sensor system circuit having a large number of shielded electric wires 100 overlaps. Then, there exists a problem which this wire harness cannot accommodate in the corrugated tube of exterior material.
Moreover, if the water stop agent is cured at the cutting position of the sheath 105 of the shielded electric wire 100 to form the water stop portion, the water stop portion may be destroyed by thermal shock or vehicle vibration. In particular, due to the difference in thermal contraction rate between the sheath 105 and the core wire 102, there is a possibility that the water stop portion is displaced. This deviation increases due to the thermal shock and vehicle vibration, and there is a possibility that the water stoppage cannot be maintained.

本発明は、前記問題に鑑みてなされたもので、止水部を肥大化させず、かつ、サーマルショックや車両振動で止水部が破壊されないようにし、シール性能を確実に保持できる止水部を備えたシールド電線を提供することを課題としている。   The present invention has been made in view of the above problems, and does not enlarge the water stop portion, prevents the water stop portion from being destroyed by thermal shock or vehicle vibration, and can reliably maintain the sealing performance. It is an object to provide a shielded electric wire provided with

前記課題を解決するため、第１の発明として、複数本のコア線をシールド層で被覆し、該シールド層を絶縁樹脂層のシースで被覆しているシールド電線であって、
前記シールド電線の端末側で前記シールド層およびシースが皮剥ぎされて前記コア線が露出すると共に、前記皮剥ぎの切断位置からシース残留側へ所要寸法離れた位置に前記シースの中間切込があり、該中間切込から前記シールド電線内に溶融させた止水剤が充填され、該中間切込を設けた前記シースの外周面を覆うように細幅な粘着テープがハーフラップ巻き又は広幅な粘着テープがすし巻きされていることを特徴とする止水部を備えたシールド電線を提供している。
前記中間切込は軸線方向に所要寸法連続させた１本のスリットでも良いし、軸線方向を長寸とした細長い楕円状の切り込みでもよい。スリットの場合は、スリットを拡げて止水剤を注入すればよい。 In order to solve the above problems, as a first invention, a shielded wire in which a plurality of core wires are covered with a shield layer, and the shield layer is covered with a sheath of an insulating resin layer,
The shield layer and sheath are peeled off at the terminal side of the shielded wire to expose the core wire, and there is an intermediate cut in the sheath at a position away from the skinned cutting position to the sheath remaining side by a required dimension. A thin adhesive tape is half-wrapped or widened to cover the outer peripheral surface of the sheath provided with the intermediate cut and filled with a water-stopping agent melted into the shielded electric wire from the intermediate cut. Provided is a shielded electric wire having a water stop portion, characterized in that the tape is wound around.
The intermediate cut may be a single slit having a required dimension continuous in the axial direction, or may be an elongated elliptical cut having a long axial direction. In the case of a slit, the water stop agent may be injected by expanding the slit.

また、第２の発明として、複数本のコア線をシールド層で被覆し、該シールド層を絶縁樹脂層のシースで被覆しているシールド電線であって、
前記シールド電線の端末側で前記シールド層およびシースが皮剥ぎされて前記コア線が露出すると共に、前記皮剥ぎの切断位置からシース残留側の前記シースに端末切込があり、該端末切込からシールド電線内に溶融させた止水剤が充填され、該端末切込を設けたシースの外周面から前記切断位置にかけて細幅な粘着テープがハーフラップ巻き又は広幅な粘着テープがすし巻きされていることを特徴とする止水部を備えたシールド電線を提供している。
前記端末切込は、軸線方向に処方寸法連続させた１本のスリットでも良いし、Ｖ形状の切り込みでもよい。スリットの場合は、スリットを拡げて止水剤を注入すればよい。 Further, as a second invention, a shielded electric wire in which a plurality of core wires are covered with a shield layer, and the shield layer is covered with a sheath of an insulating resin layer,
The shield layer and the sheath are peeled off at the terminal side of the shielded wire to expose the core wire, and the sheath on the sheath residual side has a terminal notch from the skinned cutting position. The shield wire is filled with a molten water-stopping agent, and a thin adhesive tape is half-wrapped or a wide adhesive tape is sushi-wrapped from the outer peripheral surface of the sheath provided with the terminal cut to the cutting position. The shield electric wire provided with the water stop part characterized by this is provided.
The terminal incision may be a single slit having a prescription dimension continuous in the axial direction or a V-shaped incision. In the case of a slit, the water stop agent may be injected by expanding the slit.

前記のように、第１の発明では、シースを皮剥する切断位置から所要寸法離れた位置でシースに切り込みをいれ、この中間切込からシースの内部に溶融させた止水剤を注入している。
なお、シールド層が金属網線である場合は、シールド層に切り込みをいれる必要はなく、シースの切り込みから注入した溶融止水剤はシールド層の網線を通してコア線側の隙間に浸透させることができる。シールド層が金属箔テープを隙間なく巻き付けている場合には、該シールド層にもシースの切り込みと同時に切り込みを入れている。 As described above, in the first invention, the sheath is cut at a position away from the cutting position where the sheath is peeled off, and a molten water-stopping agent is injected into the sheath from the intermediate cut. .
When the shield layer is a metal mesh wire, it is not necessary to make a cut in the shield layer, and the molten water-stopper injected from the sheath cut may penetrate the gap on the core wire side through the shield layer mesh wire. it can. When the shield layer winds the metal foil tape without any gaps, the shield layer is also cut simultaneously with the cutting of the sheath.

本発明で用いる前記粘着テープは、塩化ビニルテープ等の薄肉テープで片面に粘着剤が塗布されており、肉厚は０．１ｍｍ〜０．２ｍｍ程度であり、前記した従来用いられている肉厚１．５ｍｍ〜３ｍｍのブチルパッドの肉厚に対して１／１０程度の厚さであり、仕上がり外径は３０〜４０％程度に減少する。
前記粘着テープとして細幅の粘着テープを用いる場合は、ハーフラップ巻きし、広幅な粘着テープを用いる場合は寿司巻きとしてもよい。いずれの場合も、粘着テープの巻付領域では粘着テープの間に隙間が生じないようにしている。 The pressure-sensitive adhesive tape used in the present invention is a thin-walled tape such as a vinyl chloride tape, with a pressure-sensitive adhesive applied on one side, and has a wall thickness of about 0.1 mm to 0.2 mm. The thickness is about 1/10 of the thickness of a butyl pad of 1.5 mm to 3 mm, and the finished outer diameter is reduced to about 30 to 40%.
When a narrow adhesive tape is used as the adhesive tape, it may be half-wrapped, and when a wide adhesive tape is used, it may be a sushi roll. In any case, no gap is formed between the adhesive tapes in the wound area of the adhesive tape.

前記のように、止水剤の充填部分をブチルパッドを用いて被覆する代わりに、薄肉の粘着テープを用いて被覆することにより止水部の外径の肥大化を低減することができる。
また、粘着テープで囲まれた切り込みからシース内部に止水剤を注入し、シース内部において、コア線同士の空隙、コア線とシールド層の間の空隙、シールド層とシースとの間の空隙に注入した止水剤を浸透している。
このように、シースを皮剥して露出させたコア線側で無く、シールド電線のシースの内部側で止水剤が、シース、シールド層およびコア線の間の空隙に浸透して硬化させて止水部を設け、止水部を外面に露出させていない。
よって、サーマルショックにおいてコア線とシースとの収縮率の相違で硬化した止水剤にヒビが入っても、ズレが生じて硬化した止水剤が剥離して止水性能が低下するのを防止することができる。
また、本発明で用いる粘着テープと止水剤の合計価格は前記ブチルパッドの価格８０％〜７０％であるため、コストの低下も図れる。 As described above, instead of covering the filling portion of the water-stopping agent with a butyl pad, the outer diameter of the water-stopping portion can be reduced by covering with a thin adhesive tape.
In addition, a water-stopping agent is injected into the sheath from the notch surrounded by the adhesive tape, and in the sheath, the gap between the core wires, the gap between the core wire and the shield layer, and the gap between the shield layer and the sheath It penetrates the injected water-stopping agent.
As described above, the water-stopping agent penetrates into the space between the sheath, the shield layer and the core wire and hardens on the inner side of the sheath of the shielded wire, not on the exposed core wire side. A water part is provided, and the water stop part is not exposed to the outer surface.
Therefore, even if cracks enter the cured water sealant due to the difference in shrinkage between the core wire and sheath in the thermal shock, it prevents the cured water sealant from peeling off and degrading the water stop performance. can do.
Moreover, since the total price of the pressure-sensitive adhesive tape and water-stopper used in the present invention is 80% to 70% of the butyl pad, the cost can be reduced.

本発明で用いる止水剤としてはシリコーン、ウレタンアクリレート（ＵＶ）が挙げられる。特に、充填時に前記空隙への浸透性を良くするために、粘度が４〜６Ｐａ・ｓ程度の低粘度のシリコーンが好適に用いられる。   Examples of the water stopping agent used in the present invention include silicone and urethane acrylate (UV). In particular, a low viscosity silicone having a viscosity of about 4 to 6 Pa · s is preferably used in order to improve the permeability into the voids during filling.

前記コア線は２〜６本であり、前記皮剥ぎ切断位置から露出したコア線の先端までの寸法は８０ｍｍ〜２００ｍｍ程度としている。このように、シールド機能の点からコア線の露出領域は短い程よいが、前記した寸法を露出させると、コア線の端末に端子金具を圧着し、該端子金具をコネクタに挿入係止できる寸法を得ることができる。   The number of the core wires is 2 to 6, and the dimension from the skinned cutting position to the exposed tip of the core wire is about 80 mm to 200 mm. Thus, it is better that the exposed area of the core wire is short in terms of the shielding function, but if the above-described dimensions are exposed, a terminal metal fitting is crimped to the end of the core wire, and a dimension capable of inserting and locking the terminal metal fitting to the connector is provided. Obtainable.

本発明のシールド電線は、車両に配索され、前記止水部を設けた端末側は非浸水領域の車室内に配索されると共に、反対側の端末に接続した端子は浸水領域に配置されるコネクタに接続され、該浸水領域側から浸入する水を前記止水部で遮断する場合に最も好適に用いられる。   The shielded electric wire of the present invention is routed in a vehicle, and the terminal side provided with the water stop portion is routed in the vehicle interior of the non-immersed area, and the terminal connected to the terminal on the opposite side is disposed in the flooded area. It is most preferably used in the case where water entering from the side of the flooded area is blocked by the water stop portion.

また、第３の発明として、前記第１および第２の発明のシールド電線の止水部の形成方法を提供している。該方法は、
前記シールド電線の端末で、前記シールド層およびシースの皮剥を行ってコア線を露出させ、
ついで、前記シースに前記端末切込又は中間切込を入れ、
ついで、前記シールド電線を水平配置して、切り込んだ前記中間切込または端末切込を上向きとして粘度３〜７Ｐａ．ｓの低粘度シリコーンを前記端末切込または中間切込注入し、
ついで、前記端末切込または中間切込を覆うように前記粘着テープを巻き付けているシールド電線の止水部の形成方法からなる。 As a third invention, there is provided a method for forming a water stop portion of the shielded electric wire according to the first and second inventions. The method
At the end of the shielded wire, the shield layer and the sheath are peeled off to expose the core wire,
Then, the terminal cut or intermediate cut is made in the sheath,
Next, the shielded electric wire is horizontally arranged, and the viscosity of 3 to 7 Pa. s low-viscosity silicone is injected into the terminal cut or intermediate cut,
Next, the method includes a method for forming a water stop portion of a shielded wire in which the adhesive tape is wound so as to cover the terminal cut or the intermediate cut.

このように、シースに上向きの切り込みを上面開口で設け、該切り込みから止水剤を注入すると、止水剤はシースの内部に溜められ、注入された止水剤がたれ落ちることが防止できる。よって、定量の止水剤を一度に供給でき、作業性を高めることができる。   Thus, when an upward cut is provided in the sheath with an opening on the upper surface and the water-stopping agent is injected from the cut, the water-stopper is stored inside the sheath, and the injected water-stopper can be prevented from dripping down. Therefore, a fixed amount of water stopping agent can be supplied at a time, and workability can be improved.

前記のように、本発明のシールド電線では、止水剤を充填する止水部を厚肉のブチルパッドではなく、薄い粘着テープで隙間なく覆っているため、止水部の肥大化を抑制できる。よって、多数本のシールド電線を集束したワイヤハーネスにおいて、止水部が集中しても極端な肥大化を防止できコルゲートチューブで外装することができる。
また、シースの切断位置を挟んだシース残留側でシースの内部に切り込みを設けて溶融した止水剤を注入して硬化させ、該切り込みを前記粘着テープで被覆して止水部を設けている。このように、シールド電線のシース内部に止水剤を設けているため、サーマルショックや車両振動により、シース残留側の内部に設けた止水部がズレたり破壊されることはなく、止水性能を高めることができる。
さらに、シースに設けた切り込みを上向きとして水平配置して止水剤を注入すると、シース内部に止水剤を溜めることができ、止水剤の注入作業を一度に効率よく行え、生産性を高めることができる。 As described above, in the shielded electric wire of the present invention, the water-stopping portion filled with the water-stopping agent is covered with a thin adhesive tape rather than a thick butyl pad, so that enlargement of the water-stopping portion can be suppressed. . Therefore, in a wire harness in which a large number of shielded electric wires are converged, even if the water stop portion is concentrated, extreme enlargement can be prevented and the exterior can be covered with a corrugated tube.
Further, a cutout is provided inside the sheath on the sheath remaining side across the cutting position of the sheath, and a molten water-stopping agent is injected and cured, and the cutout is covered with the adhesive tape to provide a waterstop portion. . As described above, since the waterproofing agent is provided inside the sheath of the shielded wire, the waterproofing part provided inside the sheath remaining side is not displaced or destroyed by thermal shock or vehicle vibration, and the waterproofing performance is maintained. Can be increased.
Furthermore, when the water-stopping agent is injected horizontally with the notch provided in the sheath facing upward, the water-stopping agent can be stored inside the sheath, so that the water-stopping agent can be injected efficiently and at the same time to increase productivity. be able to.

（Ａ）はシールド電線の断面図、（Ｂ）はシールド電線の車両での配線位置を示す概略図、（Ｃ）はシールド電線の端末のシール剥離位置を示す拡大図である。(A) is sectional drawing of a shielded electric wire, (B) is the schematic which shows the wiring position in the vehicle of a shielded electric wire, (C) is an enlarged view which shows the seal peeling position of the terminal of a shielded electric wire. （Ａ）〜（Ｄ）は第１実施形態の止水部の形成工程を示す図面である。(A)-(D) are drawings which show the formation process of the water stop part of 1st Embodiment. 第１実施形態のシールド電線の止水部の断面図であるIt is sectional drawing of the water stop part of the shield electric wire of 1st Embodiment. 第１実施形態の変形例を示す図面である。It is drawing which shows the modification of 1st Embodiment. （Ａ）〜（Ｃ）は第２実施形態の止水部の形成工程を示す図面である。(A)-(C) are drawings which show the formation process of the water stop part of 2nd Embodiment. 従来例を示し、（Ａ）シールド電線の断面図、（Ｂ）はシールド電線の配線状態を示す概略図である。A prior art example is shown, (A) Sectional drawing of a shield wire, (B) is the schematic which shows the wiring state of a shield wire. （Ａ）は従来のシールド電線の止水部の断面図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図である。(A) is sectional drawing of the water stop part of the conventional shield electric wire, (B) is BB sectional drawing of (A).

以下、本発明の止水部を備えたシールド電線の実施形態を説明する。
図１に示すように、シールド電線１の基本的構造は前記図７（Ａ）と同一である。シールド電線１は２〜６本（本実施形態では６本）のコア線２とアース用のドレン線３とを金属箔テープまたはは金属網チューブからなるシールド層４で被覆し、該シールド層４を絶縁樹脂層の外皮からなるシース５で被覆している。本実施形態ではシールド層は金属網チューブとしている。
前記コア線２は多数本の銅系素線をより合わせた芯線を絶縁樹脂層で被覆した被覆丸電線である。 Hereinafter, the embodiment of the shielded electric wire provided with the water stop part of the present invention is described.
As shown in FIG. 1, the basic structure of the shielded electric wire 1 is the same as that shown in FIG. In the shielded electric wire 1, 2 to 6 (6 in the present embodiment) core wires 2 and a ground drain wire 3 are covered with a shield layer 4 made of a metal foil tape or a metal mesh tube. Is covered with a sheath 5 made of an outer skin of an insulating resin layer. In this embodiment, the shield layer is a metal net tube.
The core wire 2 is a covered round electric wire in which a core wire obtained by twisting a large number of copper-based wires is covered with an insulating resin layer.

シールド電線１は、前記図６（Ｂ）と同様に、両端末に端子金具７、８を圧着接続している。該シールド電線１はエンジンルームの浸水領域（Ｘ）から車室内の非浸水領域（Ｙ）へと配索しており、浸水領域に位置させるシールド電線１の一端末に端子金具７を接続し、防水コネクタ９Ａに挿入して接続するものとし、非浸水領域に位置させるシールド電線１の他端末に端子金具８を接続し、非防水コネクタ９Ｂに挿入して接続するものとしている。
前記シールド電線１の両端末では、シース５とシールド層４とを約８０〜２００ｍｍにわたって皮剥ぎし、露出させたコア線２の端末を更に皮剥ぎして端子金具７、８を圧着している。 In the shielded electric wire 1, terminal fittings 7 and 8 are crimped and connected to both ends as in FIG. The shielded cable 1 is routed from the flooded area (X) of the engine room to the non-immersed area (Y) of the vehicle interior, and the terminal fitting 7 is connected to one end of the shielded cable 1 positioned in the flooded area, The terminal fitting 8 is connected to the other end of the shielded electric wire 1 positioned in the non-water-immersed region and the terminal fitting 8 is inserted and connected to the non-waterproof connector 9B.
At both ends of the shielded electric wire 1, the sheath 5 and the shield layer 4 are peeled over about 80 to 200 mm, and the exposed end of the core wire 2 is further peeled to crimp the terminal fittings 7 and 8. .

前記シールド電線１は、浸水領域（Ｘ）側でシース５の切断端からシールド電線１の内部に侵入する水が非浸水領域（Ｙ）側まで流れて端子金具８へと伝わり、非防水コネクタ９Ｂ内で腐食が発生するのを防止するため、端子金具８との接続側に後述する止水部１０を設けている。   In the shielded electric wire 1, water entering the inside of the shielded electric wire 1 from the cut end of the sheath 5 on the submerged area (X) side flows to the non-submerged area (Y) side and is transmitted to the terminal fitting 8, and the non-waterproof connector 9B. In order to prevent corrosion from occurring inside, a water stop portion 10 described later is provided on the connection side with the terminal fitting 8.

図２および図３に第１実施形態の止水部１０を設けたシールド電線１を示す。
第１実施形態の止水部１０は図２に示す工程で形成している。即ち、
まず、シールド電線１の非浸水領域（Ｙ）の端末側において、先端Ｐ２から８０ｍｍの位置でシース５およびシールド層４に環状の切り目をいれて切断する。切断後、図２（Ａ）に示すように、切断位置Ｐ１から先端Ｐ２に向けて切断したシースおびシールド層を移動させて切除して皮剥ぎし、コア線２およびドレン線３を露出させる。 The shielded electric wire 1 which provided the water stop part 10 of 1st Embodiment in FIG. 2 and FIG. 3 is shown.
The water stop part 10 of 1st Embodiment is formed in the process shown in FIG. That is,
First, on the terminal side of the non-immersed area (Y) of the shielded electric wire 1, the sheath 5 and the shield layer 4 are cut by making an annular cut at a position 80 mm from the tip P2. After the cutting, as shown in FIG. 2 (A), the sheath and the shield layer cut from the cutting position P1 toward the tip P2 are moved and cut off, and the core wire 2 and the drain wire 3 are exposed.

ついで、図２（Ｂ）に示すように、切断位置Ｐ１よりシース残留側へ所要寸法（本実施形態では２０ｍｍを離れた位置で、シース５の外周面から軸線方向を長寸とする細長い楕円状の中間切込１１をいれる。該中間切込１１の軸方向寸法は８ｍｍ〜１２ｍｍとしている。該中間切込１１はシールド電線１を水平配置した状態で上面側に設けている。   Next, as shown in FIG. 2 (B), a required dimension (in this embodiment, 20 mm away from the cutting position P1 to the sheath remaining side, an elongated elliptical shape having a long axis in the axial direction from the outer peripheral surface of the sheath 5. The intermediate cut 11 has an axial dimension of 8 mm to 12 mm, and the intermediate cut 11 is provided on the upper surface side in a state where the shielded electric wire 1 is horizontally disposed.

ついで、図２（Ｃ）に示すように、上向きに開口させた前記中間切込１１に上方から止水注入用のノズル１８を配置して、該ノズル１８から溶融したシリコーン１５からなる止水剤をシース５の内部に注入する。その際、中間切込１１から注入したシリコーン１５はシース５内に溜められた後に、シース５の内部の隙間へと浸透していく。このように、シース５の中間切込１１を設けて下面は閉鎖部としているため、シース５の内部に一度の所定量のシリコーンを連続して注入することができ、シリコーン１５の注入作業を促進できる。
シリコーン１５は粘度が５ｐａ・ｓである比較的低粘度としている。よって、中間切込１１から注入したシリコーン１５は、中間切込１１の位置から軸線方向に流れ、切断位置Ｐ１に近接した位置までシリコーン１５が浸透する。 Next, as shown in FIG. 2 (C), a nozzle 18 for injecting water from above is disposed in the intermediate notch 11 opened upward, and a water-stopping agent made of silicone 15 melted from the nozzle 18. Is injected into the sheath 5. At that time, the silicone 15 injected from the intermediate notch 11 is accumulated in the sheath 5 and then penetrates into the gap inside the sheath 5. In this way, since the intermediate notch 11 of the sheath 5 is provided and the lower surface is a closed portion, a predetermined amount of silicone can be continuously injected into the inside of the sheath 5 and the silicone 15 injection operation is facilitated. it can.
Silicone 15 has a relatively low viscosity of 5 pa · s. Therefore, the silicone 15 injected from the intermediate cut 11 flows in the axial direction from the position of the intermediate cut 11, and the silicone 15 penetrates to a position close to the cutting position P1.

前記中間切込１１から溶融させたシリコーン１５を注入すると、金属網チューブからなるシールド層４の網目の空隙を通してコア線２側へと浸透する。よって、シース５で囲まれた内部で、シース５の内周面とシールド層４の間、シールド層４とコア線２およびドレン線３の間、コア線同士の間の各空隙にシリコーン１５が浸透して充填される。   When the molten silicone 15 is injected from the intermediate cut 11, it penetrates into the core wire 2 side through the mesh space of the shield layer 4 made of a metal mesh tube. Therefore, within the space surrounded by the sheath 5, the silicone 15 is present in the gaps between the inner peripheral surface of the sheath 5 and the shield layer 4, between the shield layer 4 and the core wire 2 and the drain wire 3, and between the core wires. Penetrate and fill.

所定量のシリコーン１５を注入後、図２（Ｄ）に示すように、中間切込１１の上面開口を塞ぐように、シールド電線１の中間切込１１があるシース５の外周面を粘着テープ１２でハーフラップ巻きして被覆する。該粘着テープ１２として本実施形態では塩化ビニルテープを用い、肉厚は０．１ｍｍ〜０．２ｍｍで、ハーフラップ巻きで２枚重ねした状態でも厚さは０．２ｍｍ〜０．４ｍｍである。   After injecting a predetermined amount of silicone 15, as shown in FIG. 2D, the outer peripheral surface of the sheath 5 having the intermediate cut 11 of the shielded wire 1 is attached to the adhesive tape 12 so as to close the upper opening of the intermediate cut 11. Cover with half wrap. In this embodiment, a vinyl chloride tape is used as the adhesive tape 12, and the thickness is 0.1 mm to 0.2 mm, and the thickness is 0.2 mm to 0.4 mm even when two sheets are overlapped by half wrap winding.

前記のようにシリコーン１５を注入後に、所要時間静置し、注入したシリコーン１５を自然硬化させる。
これにより、シールド電線１には、シースの切断位置Ｐ１から少なくとも約２０ｍｍ離れた位置で粘着テープ１２が巻き付けられた中間切込１１の内部で止水部１０を形成している。なお、中間切込１１から注入したシリコーン１５はシース５の内部で軸線方向へもある程度流れて浸透するため、切断位置Ｐ１側では該切断位置Ｐ１に近接した位置も止水部１０となる。 As described above, after the silicone 15 is injected, the silicone 15 is allowed to stand for a required time, and the injected silicone 15 is naturally cured.
As a result, the shielded electric wire 1 has a water stop 10 formed inside the intermediate cut 11 around which the adhesive tape 12 is wound at a position at least about 20 mm away from the cutting position P1 of the sheath. In addition, since the silicone 15 injected from the intermediate notch 11 flows and penetrates to some extent in the axial direction inside the sheath 5, the position close to the cutting position P1 also becomes the water stop portion 10 on the cutting position P1 side.

前記止水部１０を備えたシールド電線１は、シース５の切断位置Ｐ１を挟んだシースの外周に厚肉のブチルパッドを巻き付けた構成とはせず、薄い粘着テープ１２をシースの中間切込１１の外周に巻き付けているだけであるため、止水部１０の外径はブチルパッドを用いた場合より３０％程度小径化することができる。
また、シース５の切断位置Ｐ１よりシース残留側の内部にシース５内部に止水部１０を設けているため、サーマルショックや車両振動の影響を抑制し、シース５とコア線２との間で充填硬化されているシリコーンのヒビやズレの発生を防ぐことができる。よって、サーマルショックにおける耐久試験で設定したシール性を確保することができる。 The shielded electric wire 1 provided with the water blocking portion 10 does not have a configuration in which a thick butyl pad is wound around the outer periphery of the sheath sandwiching the cutting position P1 of the sheath 5, and a thin adhesive tape 12 is cut in the middle of the sheath. 11 is merely wound around the outer periphery of the outer periphery of the water stop portion 10, so that the outer diameter of the water stop portion 10 can be reduced by about 30% compared to the case where a butyl pad is used.
Moreover, since the water stop part 10 is provided in the sheath 5 inside the sheath remaining side from the cutting position P1 of the sheath 5, the influence of thermal shock and vehicle vibration is suppressed, and between the sheath 5 and the core wire 2 It is possible to prevent generation of cracks and displacement of the filled and cured silicone. Therefore, the sealing property set in the durability test in the thermal shock can be ensured.

図４に第１実施形態の変形例を示す。
該変形例では、粘着テープ１２Ａとして広幅を用い、中間切込１１を被覆するように、シールド線１のシース５の外周面に寿司巻き状に巻き付けている。 FIG. 4 shows a modification of the first embodiment.
In the modification, a wide width is used as the adhesive tape 12A, and the sushi roll is wound around the outer peripheral surface of the sheath 5 of the shield wire 1 so as to cover the intermediate cut 11.

図５に第２実施形態を示す。
第２実施形態は、シリコーン１５からなる溶融した止水剤を注入する切り込みを、シースの切断位置Ｐ１から設けた端末切込２０とした点を第１実施形態と相違させている。他の構成および作用効果は第１実施形態と同様である。 FIG. 5 shows a second embodiment.
The second embodiment is different from the first embodiment in that the notch for injecting the molten water-stopping agent made of silicone 15 is the terminal notch 20 provided from the cutting position P1 of the sheath. Other configurations and operational effects are the same as those of the first embodiment.

図５に示すように、シース５の切断位置Ｐ１からシース残留側のシース５にＶ形状の端末切込２０を設けている。該端末切込２０の軸線方向長さは８ｍｍ〜１２ｍｍとしている。   As shown in FIG. 5, a V-shaped end cut 20 is provided in the sheath 5 on the sheath remaining side from the cutting position P <b> 1 of the sheath 5. The length of the terminal notch 20 in the axial direction is 8 mm to 12 mm.

本第２実施形態では、図５（Ａ）に示すように、シールド電線１の先端から８０ｍｍの長さでシース５切断除去し、切断位置Ｐ１からＶ形状の端末切込２０を形成する。
ついで、図５（Ｂ）に示すように、端末切込２０より溶融したシリコーン１５をノズル１８より注入し、その後、図５（Ｃ）に示すように、端末切込２０を覆うように粘着テープ１２をハーフラップ巻きしている。 In the second embodiment, as shown in FIG. 5A, the sheath 5 is cut and removed by a length of 80 mm from the tip of the shielded electric wire 1 to form a V-shaped end cut 20 from the cutting position P1.
Next, as shown in FIG. 5 (B), the silicone 15 melted from the terminal cut 20 is injected from the nozzle 18, and then, as shown in FIG. 12 is half-wrapped.

この第２実施形態のように、シースの切断位置Ｐ１からシース５の端末に端末切込をいれた場合も、シース５内の空隙にシリコーン１５を隙間無く充填でき、信頼性の高い止水部１０を形成することができる。
他の作用効果は第１実施形態と同様であるため説明を省略する。 As in the second embodiment, even when a terminal cut is made at the end of the sheath 5 from the cutting position P1 of the sheath, the gap in the sheath 5 can be filled with the silicone 15 without any gap, and a highly reliable water stop portion. 10 can be formed.
Other functions and effects are the same as those of the first embodiment, and thus description thereof is omitted.

１ シールド電線
２ コア線
４ シールド層
５ シース
１０ 止水部
１１ 中間切込
１２ 粘着テープ
１５ シリコーン
２０ 端末切込
Ｐ１ 切断位置 DESCRIPTION OF SYMBOLS 1 Shield electric wire 2 Core wire 4 Shield layer 5 Sheath 10 Water stop part 11 Intermediate cut 12 Adhesive tape 15 Silicone
20 Terminal cutting P1 Cutting position

Claims (5)

コア線をシールド層で被覆し、該シールド層を絶縁樹脂層のシースで被覆しているシールド電線であって、
前記シールド電線の端末側で前記シールド層およびシースが皮剥ぎされて前記コア線が露出すると共に、前記皮剥ぎの切断位置からシース残留側へ所要寸法離れた位置に前記シースの中間切込があり、該中間切込から前記シールド電線内に溶融させた止水剤が充填され、該中間切込を設けた前記シースの外周面を覆うように細幅な粘着テープがハーフラップ巻き又は広幅な粘着テープがすし巻きされていることを特徴とする止水部を備えたシールド電線。 A shielded wire in which a core wire is covered with a shield layer, and the shield layer is covered with a sheath of an insulating resin layer,
The shield layer and sheath are peeled off at the terminal side of the shielded wire to expose the core wire, and there is an intermediate cut in the sheath at a position away from the skinned cutting position to the sheath remaining side by a required dimension. A thin adhesive tape is half-wrapped or widened to cover the outer peripheral surface of the sheath provided with the intermediate cut and filled with a water-stopping agent melted into the shielded electric wire from the intermediate cut. A shielded electric wire with a water stop, characterized in that the tape is wound around. 複数本のコア線をシールド層で被覆し、該シールド層を絶縁樹脂層のシースで被覆しているシールド電線であって、
前記シールド電線の端末側で前記シールド層およびシースが皮剥ぎされて前記コア線が露出すると共に、前記皮剥ぎの切断位置からシース残留側の前記シースに端末切込があり、該端末切込からシールド電線内に溶融させた止水剤が充填され、該端末切込を設けたシースの外周面から前記切断位置にかけて細幅な粘着テープがハーフラップ巻き又は広幅な粘着テープがすし巻きされていることを特徴とする止水部を備えたシールド電線。 A shielded wire in which a plurality of core wires are covered with a shield layer, and the shield layer is covered with a sheath of an insulating resin layer,
The shield layer and the sheath are peeled off at the terminal side of the shielded wire to expose the core wire, and the sheath on the sheath residual side has a terminal notch from the skinned cutting position. The shield wire is filled with a molten water-stopping agent, and a thin adhesive tape is half-wrapped or a wide adhesive tape is sushi-wrapped from the outer peripheral surface of the sheath provided with the terminal cut to the cutting position. A shielded electric wire provided with a water stop part. 前記止水剤はシリコーンであり、前記コア線は２〜６本であり、前記皮剥ぎ切断位置から露出したコア線の先端までの寸法は８０ｍｍ〜２００ｍｍである請求項１乃至請求項３のいずれか１項に記載の止水部を備えたシールド電線。   The said water-stopping agent is silicone, the said core wire is 2-6, The dimension to the front-end | tip of the exposed core wire from the said skinning cutting position is 80 mm-200 mm, Any of Claim 1 thru | or 3 A shielded electric wire provided with the water stop part according to claim 1. 車両に配索され、前記止水部を設けた端末側は非浸水領域の車室内に配索されると共に、反対側の端末に接続した端子は浸水領域に配置されるコネクタに接続され、該浸水領域側から浸入する水を前記止水部で遮断している請求項１乃至請求項３のいずれか１項に記載の止水部を備えたシールド電線。   The terminal side provided in the vehicle and provided with the water stop portion is routed in the vehicle interior of the non-immersed area, and the terminal connected to the terminal on the opposite side is connected to a connector arranged in the flooded area, The shield electric wire provided with the water stop part of any one of the Claims 1 thru | or 3 which interrupted | blocked the water which permeates from the water immersion area side by the said water stop part. 請求項１乃至請求項４のいずれか１項に記載のシールド電線の止水部の形成方法であって、
前記シールド電線の端末で、前記シールド層およびシースの皮剥を行ってコア線を露出させ、
ついで、前記シースに前記端末切込又は中間切込を入れ、
ついで、前記シールド電線を水平配置して、前記切り込んだ端末切込または中間切込を上向きとして粘度３〜７Ｐａ．ｓの低粘度シリコーンを前記端末切込または中間切込注入し、
ついで、前記端末切込または中間切込を覆うように前記粘着テープを巻き付けているシールド電線の止水部の形成方法。 It is a formation method of the water stop part of a shield electric wire according to any one of claims 1 to 4,
At the end of the shielded wire, the shield layer and the sheath are peeled off to expose the core wire,
Then, the terminal cut or intermediate cut is made in the sheath,
Next, the shielded wire is horizontally arranged, and the viscosity is 3 to 7 Pa. With the cut end cut or intermediate cut upward. s low-viscosity silicone is injected into the terminal cut or intermediate cut,
Subsequently, the formation method of the water stop part of the shield electric wire which has wound the adhesive tape so that the above-mentioned terminal cut or intermediate cut may be covered.
JP2009216574A 2009-09-18 2009-09-18 Shield wire having water-stopping section and method for forming water-stopping section of shield wire Withdrawn JP2011065911A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017134939A (en) * 2016-01-26 2017-08-03 株式会社オートネットワーク技術研究所 Waterproof electrical wire and manufacturing method of same
JP2019062603A (en) * 2017-09-25 2019-04-18 矢崎総業株式会社 Cutoff connection structure for wire and cutoff connection method for wire
JP2020024953A (en) * 2019-11-18 2020-02-13 株式会社オートネットワーク技術研究所 Cut-off electric wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017134939A (en) * 2016-01-26 2017-08-03 株式会社オートネットワーク技術研究所 Waterproof electrical wire and manufacturing method of same
JP2019062603A (en) * 2017-09-25 2019-04-18 矢崎総業株式会社 Cutoff connection structure for wire and cutoff connection method for wire
JP2020024953A (en) * 2019-11-18 2020-02-13 株式会社オートネットワーク技術研究所 Cut-off electric wire

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