JP2009081000A

JP2009081000A - Wire harness

Info

Publication number: JP2009081000A
Application number: JP2007248384A
Authority: JP
Inventors: Shinichi Kogure; 眞一小暮; Suguru Nishino; 卓西野
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2007-09-26
Filing date: 2007-09-26
Publication date: 2009-04-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire harness with a water cut-off portion which can maintain a water cut-off property for a long period. <P>SOLUTION: The wire harness 1 is provided with a water cut-off portion 7, in which liquid foamed silicone 6 of an additional type is filled up, inside a cap 4 in which a plurality of ends of wires 2 with joint terminals 3 are housed. Moreover, a coated portion 22 of the wire 2 and the cap 4 are composed of a vinyl chloride resin. The water cut-off portion 7 is composed of a semi-solid portion 6a which is made semi-solid by an affect of chlorine contained in the vinyl chloride resin and a solid portion 6b which becomes solid after hardening. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、芯線の外周が絶縁性の被覆部で覆われた電線の所定位置に止水部が設けられたワイヤハーネスに関するものである。 The present invention relates to a wire harness in which a water stop portion is provided at a predetermined position of an electric wire whose outer periphery is covered with an insulating covering portion.

従来より、上記電線間、または上記電線の芯線間に水などの液体が浸入することを防止するために、種々の止水材を用いて前記電線の端末などに止水処理を施すことが一般的に行われている（例えば特許文献１を参照。）。 Conventionally, in order to prevent liquids such as water from entering between the wires or between the cores of the wires, it is common to perform a water stop treatment on the ends of the wires using various water stop materials. (For example, refer to Patent Document 1).

例えば、特許文献１では、アース用電線の端末の被覆部が皮剥きされることにより露出した芯線を取り囲むように金型を取り付け、そして、前記金型内に前記止水材としての発泡ウレタンを注入して、該発泡ウレタンを前述した芯線間に浸透させて硬化させることにより、この芯線間に止水処理を施す技術が開示されている。 For example, in Patent Document 1, a mold is attached so as to surround an exposed core wire by stripping the covering portion of the end of the ground wire, and foamed urethane as the water stop material is placed in the mold. A technique is disclosed in which the foamed urethane is infiltrated between the above-described core wires and cured by injecting the urethane foam, thereby performing a water stop treatment between the core wires.

このように、従来の止水処理においては、芯線間、または電線間などを止水する止水材として発泡ウレタンが多く使用されてきた。
特開２００７−５２９９９号公報 As described above, in the conventional water stop treatment, urethane foam is often used as a water stop material for stopping water between core wires or between electric wires.
JP 2007-52999 A

上述した発泡ウレタンは、架橋反応により液体状から固体状に硬化するのに伴って、被着体（即ち、上記特許文献１の場合は被覆部及び芯線）に対する粘着力が低下する性質を有している。このことから、上述した発泡ウレタンにより止水処理が施された電線が、自動車等の常時振動が加えられる環境下で長期に亘って使用される場合は、硬化した固体状の発泡ウレタンと上記被覆部または上記芯線との間に徐々に隙間が生じ、止水性が低下してくるという問題があった。 The foamed urethane described above has a property that the adhesive force to the adherend (that is, the covering portion and the core wire in the case of Patent Document 1) is reduced as it is cured from a liquid state to a solid state by a crosslinking reaction. ing. Therefore, when the electric wire that has been water-stopped with the above-mentioned foamed urethane is used over a long period of time in an environment where constant vibration is applied, such as an automobile, the cured solid foamed urethane and the above coating There is a problem that a gap is gradually formed between the portion and the core wire, and the water stoppage is lowered.

したがって、本発明は、長期に亘って高い止水性を保持できる止水部が設けられたワイヤハーネスを提供することを目的とする。 Therefore, an object of this invention is to provide the wire harness provided with the water stop part which can hold | maintain a high water stop for a long period of time.

上記目的を達成するために、請求項１に記載された発明は、芯線の外周が絶縁性の被覆部で覆われた複数本の電線と、該複数本の電線の前記芯線同士を電気的に接続した端子と、該端子が接続された前記複数本の電線の端末を内側に収容した筒状部材と、これら筒状部材と複数本の電線及び端子との間を止水した止水部と、を有するワイヤハーネスにおいて、前記止水部が、前記筒状部材と前記複数本の電線及び前記端子との間に、付加型の液状発泡シリコーンが充填されて設けられ、そして、前記被覆部が、前記付加型の液状発泡シリコーンの硬化阻害物質を含んだ絶縁性材料で構成されていることを特徴とするワイヤハーネスである。 In order to achieve the above object, according to the first aspect of the present invention, there is provided a plurality of electric wires in which an outer periphery of a core wire is covered with an insulating covering, and the core wires of the plurality of electric wires are electrically connected to each other. A connected terminal, a cylindrical member that accommodates the ends of the plurality of electric wires to which the terminal is connected, and a water stop portion that stops water between the cylindrical member and the plurality of electric wires and the terminal. In the wire harness, the water stop portion is provided between the tubular member and the plurality of electric wires and the terminal by being filled with additional liquid foamed silicone, and the covering portion is provided. The wire harness is made of an insulating material containing a curing inhibitor of the addition type liquid foam silicone.

請求項２に記載された発明は、請求項１に記載された発明において、前記被覆部が、塩化ビニル樹脂で構成されていることを特徴とするものである。 The invention described in claim 2 is characterized in that, in the invention described in claim 1, the covering portion is made of a vinyl chloride resin.

請求項３に記載された発明は、請求項１または請求項２に記載された発明において、前記筒状部材が、前記付加型の液状発泡シリコーンの硬化阻害物質を含んだ絶縁性材料で構成されていることを特徴とするものである。 According to a third aspect of the present invention, in the first or second aspect of the present invention, the cylindrical member is made of an insulating material containing a curing inhibitor of the additional liquid foamed silicone. It is characterized by that.

請求項４に記載された発明は、芯線の外周が絶縁性の被覆部で覆われた少なくとも一本の電線と、該電線を内側に収容した筒状部材と、これら筒状部材と電線との間を止水した止水部と、を有するワイヤハーネスにおいて、前記止水部が、前記筒状部材と前記電線との間に、付加型の液状発泡シリコーンが充填されて設けられ、そして、前記被覆部が、前記付加型の液状発泡シリコーンの硬化阻害物質を含んだ絶縁性材料で構成されていることを特徴とするワイヤハーネスである。 According to a fourth aspect of the present invention, there is provided at least one electric wire whose outer periphery is covered with an insulating covering portion, a cylindrical member containing the electric wire inside, and the cylindrical member and the electric wire. In the wire harness having a water stop portion between which water is stopped, the water stop portion is provided between the tubular member and the electric wire and filled with additional liquid foamed silicone, and The wire harness is characterized in that a covering portion is made of an insulating material containing a curing inhibitor of the addition type liquid foam silicone.

請求項１に記載された発明によれば、止水部が、筒状部材と複数本の電線及び端子との間に、付加型の液状発泡シリコーンが充填されて設けられ、そして、前記電線の被覆部が、前記付加型の液状発泡シリコーンの硬化阻害物質を含んだ絶縁性材料で構成されていることから、この硬化阻害物質による付加型の液状発泡シリコーンの付加反応阻害作用、即ち硬化阻害作用、により、前記止水部のうち前記被覆部に接触している箇所は、硬化せずに粘着質の半固体部を形成する。よって、この半固体部と前記被覆部との間に隙間が生じることがないので、長期に亘って高い止水性を保持できる止水部が設けられたワイヤハーネスを提供することができる。また、止水材として、耐水性、耐熱性、耐寒性等がウレタンよりも優れた付加型の液状発泡シリコーンを用いたことから、長期の信頼性を有するワイヤハーネスを提供することができる。 According to the first aspect of the present invention, the water stop portion is provided between the tubular member and the plurality of electric wires and the terminal by being filled with additional liquid foamed silicone, and the electric wire Since the covering portion is made of an insulating material containing the addition-type liquid foamed silicone curing inhibitor, the addition-type liquid foamed silicone has an addition reaction inhibitory action, that is, a cure inhibitory action. Thereby, the location which is contacting the said coating | coated part among the said water stop parts forms an adhesive semi-solid part, without hardening | curing. Therefore, since no gap is generated between the semi-solid portion and the covering portion, it is possible to provide a wire harness provided with a water stop portion that can maintain a high water stop for a long time. Moreover, since the addition type liquid foamed silicone having water resistance, heat resistance, cold resistance, etc. superior to urethane is used as the water stop material, a wire harness having long-term reliability can be provided.

請求項２に記載された発明によれば、前記被覆部が、塩化ビニル樹脂で構成されていることから、この塩化ビニル樹脂に含まれる塩素の影響により、前記止水部のうち前記被覆部に接触している箇所は、硬化せずに粘着質の半固体部を形成する。よって、この半固体部と前記被覆部との間に隙間が生じることがないので、長期に亘って高い止水性を保持できる止水部が設けられたワイヤハーネスを提供することができる。 According to the invention described in claim 2, since the covering portion is made of vinyl chloride resin, due to the influence of chlorine contained in the vinyl chloride resin, the covering portion of the water stop portion is covered with the covering portion. The part in contact forms an adhesive semi-solid part without curing. Therefore, since no gap is generated between the semi-solid portion and the covering portion, it is possible to provide a wire harness provided with a water stop portion that can maintain a high water stop for a long time.

請求項３に記載された発明によれば、前記筒状部材が、前記付加型の液状発泡シリコーンの硬化阻害物質を含んだ絶縁性材料で構成されていることから、この硬化阻害物質による付加型の液状発泡シリコーンの付加反応阻害作用、即ち硬化阻害作用、により、前記止水部のうち前記筒状部材に接触している箇所は、硬化せずに粘着質の半固体部を形成する。よって、前記筒状部材と前記止水部とが固着していないので、容易に分解することができるとともにリサイクル性の向上を図ることができるワイヤハーネスを提供することができる。 According to the invention described in claim 3, since the cylindrical member is made of an insulating material containing a curing inhibitor of the addition-type liquid foamed silicone, the addition mold of the curing inhibitor is used. Due to the addition reaction inhibiting action of the liquid foam silicone, that is, the curing inhibiting action, the portion of the water-stopping part that is in contact with the cylindrical member forms an adhesive semi-solid part without curing. Therefore, since the said cylindrical member and the said water stop part are not adhering, the wire harness which can aim at the improvement of recyclability while being able to decompose | disassemble easily can be provided.

請求項４に記載された発明によれば、止水部が、筒状部材と電線との間に、付加型の液状発泡シリコーンが充填されて設けられ、そして、前記電線の被覆部が、前記付加型の液状発泡シリコーンの硬化阻害物質を含んだ絶縁性材料で構成されていることから、この硬化阻害物質による付加型の液状発泡シリコーンの付加反応阻害作用、即ち硬化阻害作用、により、前記止水部のうち前記被覆部に接触している箇所は、硬化せずに粘着質の半固体部を形成する。よって、この半固体部と前記被覆部との間に隙間が生じることがないので、長期に亘って高い止水性を保持できる止水部が設けられたワイヤハーネスを提供することができる。また、止水材として、耐水性、耐熱性、耐寒性等がウレタンよりも優れた付加型の液状発泡シリコーンを用いたことから、長期の信頼性を有するワイヤハーネスを提供することができる。 According to the invention described in claim 4, the water stop portion is provided between the tubular member and the electric wire by being filled with the additional type liquid foamed silicone, and the covering portion of the electric wire Since it is composed of an insulating material containing an addition-type liquid foamed silicone curing inhibitor, the above-mentioned stopping action is caused by the addition reaction inhibiting action of the addition-type liquid foamed silicone by this curing inhibitor, ie, the cure inhibiting action. The portion of the water portion that is in contact with the coating portion forms an adhesive semi-solid portion without curing. Therefore, since no gap is generated between the semi-solid portion and the covering portion, it is possible to provide a wire harness provided with a water stop portion that can maintain a high water stop for a long time. Further, since the addition type liquid foamed silicone having water resistance, heat resistance, cold resistance and the like superior to urethane is used as the water stop material, a wire harness having long-term reliability can be provided.

以下、本発明の第１の実施形態に係るワイヤハーネスを図１ないし図６を参照して説明する。 Hereinafter, a wire harness according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 6.

図１及び図２に示すワイヤハーネス１は、自動車に搭載され、前記自動車の各種電子機器間に電力や信号を伝達するものである。このワイヤハーネス１は、複数本の電線２と、これら電線２の芯線２１同士を電気的に接続した端子としてのジョイント端子３と、複数本の電線２及びジョイント端子３を内側に収容した筒状部材としてのキャップ４と、これら複数本の電線２及びジョイント端子３とキャップ４との間を止水した止水部７と、キャップ４の開口部に複数の電線２とともに巻き付けられたテープ５と、を有している。 A wire harness 1 shown in FIGS. 1 and 2 is mounted on an automobile and transmits electric power and signals between various electronic devices of the automobile. The wire harness 1 includes a plurality of electric wires 2, a joint terminal 3 as a terminal that electrically connects the core wires 21 of the electric wires 2, and a cylindrical shape that accommodates the plurality of electric wires 2 and the joint terminals 3 inside. A cap 4 as a member, a water stopping portion 7 that stops water between the plurality of electric wires 2 and joint terminals 3 and the cap 4, and a tape 5 that is wound around the opening of the cap 4 together with the electric wires 2 ,have.

また、本発明で言う「止水」とは、水の浸入を阻止することに限らず、水、油、アルコール、等を含む液体全般に有効に作用することを意味するが、ここでは一般的に名称として広く用いられている「止水」を用いて説明する。 In addition, the term “water-stopping” as used in the present invention is not limited to preventing the entry of water, but means that it effectively acts on all liquids including water, oil, alcohol, etc. It will be explained using “stop water” widely used as the name.

上記電線２は、導電性の芯線２１と、絶縁性の被覆部２２と、を有している。芯線２１は、複数の素線が束ねられて構成されている。被覆部２２は、絶縁性材料で構成され、芯線２１を被覆している。また、この電線２は、一方の端部の被覆部２２が除去されることで露出した芯線２１に、後述するジョイント端子３が接続されている。 The electric wire 2 has a conductive core wire 21 and an insulating covering portion 22. The core wire 21 is configured by bundling a plurality of strands. The covering portion 22 is made of an insulating material and covers the core wire 21. In addition, the electric wire 2 has a joint terminal 3 to be described later connected to the core wire 21 exposed by removing the covering portion 22 at one end.

また、本発明では、前記被覆部２２を構成する絶縁性材料として、付加型の液状発泡シリコーンの硬化を阻害する硬化阻害物質を含んだ、塩化ビニル樹脂、ポリプロピレン、ポリエチレン等の合成樹脂やゴムが用いられる。これら合成樹脂やゴムは、原料に、（ａ）硬化阻害物質として、ゴムであれば、硫黄や有機過酸化物などで構成される加硫剤、また、塩化ビニル樹脂、ポリプロピレン、ポリエチレンであれば有機金属化合物などで構成される安定剤、（ｂ）スリップ剤として有機酸化合物、（ｃ）着色剤として有機系顔料や染料、などを添加すればよい。但し、環境問題を考慮した場合、有機金属化合物として有機スズ系等を用いることは好ましくない。また、本実施形態では、塩化ビニル樹脂で前記被覆部２２を構成している。 Further, in the present invention, synthetic resin such as vinyl chloride resin, polypropylene, polyethylene, or rubber containing a curing inhibitor that inhibits curing of addition-type liquid foamed silicone is used as the insulating material constituting the covering portion 22. Used. If these synthetic resins and rubbers are raw materials, (a) as a curing inhibitor, if rubber, vulcanizing agents composed of sulfur, organic peroxides, etc., and if vinyl chloride resin, polypropylene, polyethylene A stabilizer composed of an organometallic compound or the like, (b) an organic acid compound as a slip agent, (c) an organic pigment or dye, etc. may be added as a colorant. However, in consideration of environmental problems, it is not preferable to use an organic tin compound or the like as the organometallic compound. Moreover, in this embodiment, the said coating | coated part 22 is comprised with the vinyl chloride resin.

上記ジョイント端子３は、銅、黄銅等を含んだ導電性金属板に、形抜き、折り曲げ等のプレス加工が施されて得られるものである。このジョイント端子３は、平面視が長方形の板状に形成された底板部３１と、この底板部３１の幅方向の両端部から立設した一対の芯線かしめ片３２と、底板部３１の幅方向の両端部から立設した一対の被覆部かしめ片３３と、を有している。また、一対の芯線かしめ片３２と一対の被覆部かしめ片３３とは、底板部３１の長手方向に沿って互いに間隔をあけて設けられている。 The joint terminal 3 is obtained by subjecting a conductive metal plate containing copper, brass or the like to press working such as die cutting and bending. The joint terminal 3 includes a bottom plate portion 31 formed in a rectangular plate shape in plan view, a pair of core wire caulking pieces 32 erected from both ends in the width direction of the bottom plate portion 31, and the width direction of the bottom plate portion 31. And a pair of covering portion caulking pieces 33 erected from both end portions. Further, the pair of core wire caulking pieces 32 and the pair of covering portion caulking pieces 33 are provided at intervals from each other along the longitudinal direction of the bottom plate portion 31.

上記底板部３１は、その長手方向が複数の電線２の長手方向と一致する向きで複数の電線２を表面上に位置付ける。また、底板部３１は、一対の被覆部かしめ片３３間に複数の電線２の各芯線２１を位置付け、一対の被覆部かしめ片３３間に複数の電線２の各被覆部２２を位置付ける向きで複数の電線２を表面上に位置付ける。 The bottom plate portion 31 positions the plurality of electric wires 2 on the surface such that the longitudinal direction thereof coincides with the longitudinal direction of the plurality of electric wires 2. The bottom plate portion 31 has a plurality of orientations in which the core wires 21 of the plurality of electric wires 2 are positioned between the pair of covering portion caulking pieces 33 and the covering portions 22 of the plurality of electric wires 2 are positioned between the pair of covering portion caulking pieces 33. Is positioned on the surface.

上記一対の芯線かしめ片３２は、上記底板部３１から離れた先端部同士が互いに近付くとともに、該先端部が底板部３１に近付く方向に曲げられることにより、上記底板部３１の表面上に位置付けられた複数の電線２の芯線２１をかしめ、これら芯線２１と電気的に接続する。そして、複数の電線２の各芯線２１と一対の芯線かしめ片３２とが電気的に接続することにより、複数の電線２の芯線２１同士が互いに電気的に接続される。 The pair of core wire caulking pieces 32 are positioned on the surface of the bottom plate portion 31 by bending the tip portions away from the bottom plate portion 31 to each other and bending the tip portions toward the bottom plate portion 31. The core wires 21 of the plurality of electric wires 2 are caulked and electrically connected to the core wires 21. And each core wire 21 of the some electric wire 2 and a pair of core wire crimping piece 32 are electrically connected, and the core wires 21 of the some electric wire 2 are mutually electrically connected.

上記一対の被覆部かしめ片３３は、上記底板部３１から離れた先端部同士が互いに近付くとともに、該先端部が底板部３１に近付く方向に曲げられることにより、上記底板部３１の表面上に位置付けられた複数の電線２の被覆部２２をかしめ、これら被覆部２２を束ねるとともに底板部３１に固定する。 The pair of covering portion caulking pieces 33 are positioned on the surface of the bottom plate portion 31 by bending the tip portions away from the bottom plate portion 31 to each other and bending the tip portions toward the bottom plate portion 31. The covering portions 22 of the plurality of electric wires 2 are caulked, and the covering portions 22 are bundled and fixed to the bottom plate portion 31.

上記キャップ４は、絶縁性材料で構成され、一方向に開口した開口部を有して細長い筒状に形成されている。このキャップ４は、前記開口部を通して、上述したジョイント端子３、及びこのジョイント端子３と接続した複数の電線２の端末を内側に収容する。 The cap 4 is made of an insulating material, has an opening that opens in one direction, and is formed in an elongated cylindrical shape. The cap 4 accommodates the joint terminal 3 and the terminals of the plurality of electric wires 2 connected to the joint terminal 3 through the opening.

また、本発明では、前記キャップ４を構成する絶縁性材料として、上述した被覆部２２と同様に、付加型の液状発泡シリコーンの硬化を阻害する硬化阻害物質を含んだ塩化ビニル樹脂、ポリプロピレン、ポリエチレン等の合成樹脂やゴムが用いられることが望ましい。また、本実施形態では、塩化ビニル樹脂で前記キャップ４を構成している。 In the present invention, as the insulating material constituting the cap 4, a vinyl chloride resin, a polypropylene, a polyethylene containing a curing inhibitor that inhibits the curing of the addition type liquid foam silicone, as in the case of the covering portion 22 described above. It is desirable to use synthetic resins such as these and rubber. In the present embodiment, the cap 4 is made of vinyl chloride resin.

上記止水部７は、上記キャップ４内に、付加型の液状発泡シリコーン６が充填されて設けられている。この付加型の液状発泡シリコーン６は、発泡することにより体積が増加し、即ち膨張し、キャップ４と、このキャップ４内に収容されたジョイント端子３及び複数の電線２との間を隙間なく埋める。 The water stop portion 7 is provided by filling the cap 4 with an additional liquid foamed silicone 6. The additional type liquid foamed silicone 6 expands in volume when foamed, that is, expands, and fills the gap between the cap 4 and the joint terminal 3 and the plurality of electric wires 2 accommodated in the cap 4 without any gaps. .

また、本発明では、上記付加型の液状発泡シリコーン６として、白金を触媒とする付加反応（架橋反応とも言う。）によって硬化するものであり、常温で硬化する。また、本発明では、上記付加型の液状発泡シリコーン６として、一液型及び二液型の双方のタイプのものを用いることができる。また、本実施形態では、信越化学工業社製のＫＥ−５２１（Ａ液とＢ液を１：１の割合で混合、室温２６℃で硬化時間約２０分。）を用いている。 In the present invention, the addition-type liquid foamed silicone 6 is cured by an addition reaction (also referred to as a crosslinking reaction) using platinum as a catalyst, and is cured at room temperature. In the present invention, both the one-pack type and the two-pack type can be used as the additional liquid foamed silicone 6. Further, in this embodiment, KE-521 (mixed liquid A and liquid B at a ratio of 1: 1, curing time at room temperature of 26 ° C. for about 20 minutes) manufactured by Shin-Etsu Chemical Co., Ltd. is used.

上記テープ５は、上記キャップ４内に、上記付加型の液状発泡シリコーン６と、上記ジョイント端子３が接続された上記複数の電線２の端末とが収容された後に、キャップ４の開口部を塞ぐように電線２の被覆部２２とともにキャップ４の外周に巻き付けられる。このようにしてテープ５は、キャップ４内から付加型の液状発泡シリコーン６が漏れ出すことを防ぐとともに、キャップ４と複数の電線２とを互いに固定する。 The tape 5 closes the opening of the cap 4 after the additional liquid silicone foam 6 and the terminals of the plurality of electric wires 2 connected to the joint terminal 3 are accommodated in the cap 4. In this way, it is wound around the outer periphery of the cap 4 together with the covering portion 22 of the electric wire 2. In this way, the tape 5 prevents the additional liquid silicone foam 6 from leaking out of the cap 4 and fixes the cap 4 and the plurality of electric wires 2 to each other.

続いて、上述したワイヤハーネス１の組み立て方法と、本発明の止水部７の詳細な構成、及び止水部７の作用効果について説明する。 Then, the assembly method of the wire harness 1 mentioned above, the detailed structure of the water stop part 7 of this invention, and the effect of the water stop part 7 are demonstrated.

まず、予め一方の端部の被覆部２２が除去された電線２に、上述したように、底板部３１の表面上に複数の電線２を位置付けた状態で一対の芯線かしめ片３２と一対の被覆部かしめ片３３とを曲げて、ジョイント端子３を取り付けておく。そして、図３に示すように、キャップ４内の開口部から離れた奥側に、付加型の液状発泡シリコーン６を注入する。そして、注入後時間をあけずに、図４に示すように、ジョイント端子３が接続された複数の電線２の端末をキャップ４内に挿入して、キャップ４の開口部を塞ぐようにテープ５を巻き付ける。 First, as described above, a pair of core wire caulking pieces 32 and a pair of coverings in a state where the plurality of wires 2 are positioned on the surface of the bottom plate portion 31 on the electric wire 2 from which the covering portion 22 at one end portion has been removed in advance. The joint terminal 3 is attached by bending the part caulking piece 33. Then, as shown in FIG. 3, the addition-type liquid foamed silicone 6 is injected into the back side away from the opening in the cap 4. Then, without leaving time after injection, as shown in FIG. 4, the ends of the plurality of electric wires 2 to which the joint terminals 3 are connected are inserted into the cap 4, and the tape 5 so as to close the opening of the cap 4. Wrap.

この際の付加型の液状発泡シリコーン６の注入量は、キャップ４内にジョイント端子３及び複数の電線２を収容した状態で、発泡後にこの付加型の液状発泡シリコーン６がキャップ４からオーバーフローする量とする。また、本実施形態では、上述したようにキャップ４の開口部をテープ５により塞いでいるので、付加型の液状発泡シリコーン６がキャップ４からほとんど漏れ出すことがなく、キャップ４内に封じ込められてキャップ４内の容積以上に膨張した付加型の液状発泡シリコーン６が、芯線２１間の細部に十分に浸透する。 The injection amount of the additional type liquid foamed silicone 6 at this time is such that the additional type liquid foamed silicone 6 overflows from the cap 4 after foaming in a state where the joint terminal 3 and the plurality of electric wires 2 are accommodated in the cap 4. And In this embodiment, since the opening of the cap 4 is closed with the tape 5 as described above, the additional liquid foamed silicone 6 hardly leaks from the cap 4 and is sealed in the cap 4. The additional type liquid foamed silicone 6 that has expanded beyond the volume in the cap 4 sufficiently penetrates into the details between the core wires 21.

そして、所定の時間を置くことにより、キャップ４内に注入された付加型の液状発泡シリコーン６が発泡しつつ膨張して、図５に示すように、キャップ４とジョイント端子３及び複数の電線２との間、そして束ねられた複数の電線２間、を隙間なく埋める。 Then, by giving a predetermined time, the additional type liquid foamed silicone 6 injected into the cap 4 expands while foaming, and as shown in FIG. 5, the cap 4, the joint terminal 3, and the plurality of electric wires 2 are expanded. And between the bundled electric wires 2 without gaps.

そして、さらに時間が経過することにより、付加型の液状発泡シリコーン６は、付加反応が開始されて硬化し始める。この際、上記塩化ビニル樹脂で構成されたキャップ４及び被覆部２２に接触している箇所は、塩素の影響を受けて付加反応が停止し、図６に示すように、硬化せずに粘度が低いまま粘着質の半固体部６ａを形成する。また、キャップ４及び被覆部２２に接触していない箇所は、固体状の固体部６ｂを形成する。このように、止水部７は、半固体部６ａと固体部６ｂとの２重構造となる。 As the time further elapses, the addition-type liquid foamed silicone 6 starts to be cured by the addition reaction. At this time, the portion that is in contact with the cap 4 and the covering portion 22 made of the above-mentioned vinyl chloride resin is affected by chlorine and the addition reaction is stopped, and as shown in FIG. The sticky semi-solid portion 6a is formed while being low. Moreover, the location which is not contacting the cap 4 and the coating | coated part 22 forms the solid-state solid part 6b. Thus, the water stop part 7 becomes a double structure of the semi-solid part 6a and the solid part 6b.

こうして止水処理が完了し、ワイヤハーネス１が組み立てられる。また、止水処理の完了後も半固体部６ａは半固体状の状態が継続され、この状態のまま完成品として前記自動車に搭載される。また、このワイヤハーネス１は、自動車の走行時等の振動により電線２が微振動を生じた場合にも、被覆部２２及びキャップ４の周囲に形成された半固体部６ａがこの微振動に追従し、これら被覆部２２及びキャップ４との間に隙間を生じることがないので、長期に亘って高い止水性を保持することができる。 Thus, the water stop process is completed, and the wire harness 1 is assembled. In addition, the semi-solid portion 6a continues to be in a semi-solid state even after the water stop treatment is completed, and is mounted on the automobile as a finished product in this state. In addition, the wire harness 1 has a semi-solid portion 6a formed around the covering portion 22 and the cap 4 following the micro vibration even when the electric wire 2 generates micro vibration due to vibration during driving of the automobile. And since a clearance gap is not produced between these coating | coated parts 22 and the cap 4, a high water-stopping property can be maintained over a long period of time.

また、このワイヤハーネス１は、前記自動車が廃車となり解体される際には、キャップ４の外周に巻き付けたテープ５を剥がすことにより、容易にキャップ４と電線２及びジョイント端子３とを分離させることができる。即ち、ワイヤハーネス１は、半固体部６ａを形成していることからキャップ４と止水部７とが固着していないので、容易に分解することができる。このことにより、前記自動車の解体コストが低減されるとともに、ワイヤハーネス１の各部品のリサイクル性が向上される。 In addition, when the automobile is scrapped and dismantled, the wire harness 1 can easily separate the cap 4 from the electric wire 2 and the joint terminal 3 by removing the tape 5 wound around the outer periphery of the cap 4. Can do. That is, since the wire harness 1 forms the semi-solid portion 6a, the cap 4 and the water stop portion 7 are not fixed, and can be easily disassembled. This reduces the dismantling cost of the automobile and improves the recyclability of each component of the wire harness 1.

本実施形態によれば、塩化ビニル樹脂で構成されたキャップ４及び被覆部２２に含まれた塩素による、付加型の液状発泡シリコーン６の付加反応阻害作用、即ち硬化阻害作用、を利用して、止水部７に半固体部６ａを形成していることから、長期に亘って高い止水性を保持できる止水部７が設けられたワイヤハーネス１を提供することができる。 According to this embodiment, the addition reaction inhibiting action of the addition type liquid foamed silicone 6 by the chlorine contained in the cap 4 and the covering portion 22 made of vinyl chloride resin, that is, the curing inhibiting action, Since the semi-solid part 6a is formed in the water stop part 7, the wire harness 1 provided with the water stop part 7 which can hold | maintain a high water stop for a long term can be provided.

また、キャップ４を塩化ビニル樹脂で構成していることから、容易に分解することができるとともにリサイクル性の向上を図ることができるワイヤハーネス１を提供することができる。 Further, since the cap 4 is made of vinyl chloride resin, it is possible to provide the wire harness 1 that can be easily disassembled and can be improved in recyclability.

また、止水材として、耐水性、耐熱性、耐寒性等がウレタンよりも優れた付加型の液状発泡シリコーン６を用いたことから、長期の信頼性を有するワイヤハーネス１を提供することができる。 Further, since the addition type liquid foamed silicone 6 having water resistance, heat resistance, cold resistance and the like superior to urethane is used as the water stop material, the wire harness 1 having long-term reliability can be provided. .

また、上述した第１の実施形態では、キャップ４を塩化ビニル樹脂で構成していたが、本発明では、キャップ４を付加型の液状発泡シリコーン６の硬化阻害物質を含まない絶縁性材料で構成しても良い。 In the first embodiment described above, the cap 4 is made of vinyl chloride resin. However, in the present invention, the cap 4 is made of an insulating material that does not contain a curing inhibitor of the additional liquid foamed silicone 6. You may do it.

続いて、本発明の第２の実施形態に係るワイヤハーネスを図７を参照して説明する。また、同図において、上述した第１の実施形態と同一構成部分には同一符号を付して説明を省略する。 Then, the wire harness which concerns on the 2nd Embodiment of this invention is demonstrated with reference to FIG. In the figure, the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

図７に示す本実施形態のワイヤハーネス１０１は、複数の電線２が束ねられた電線束１０２と、この電線束１０２を内側に通し、前記自動車を構成するパネル９の貫通孔９ａに取り付けられる筒状部材としてのグロメット８と、これら電線束１０２とグロメット８との間を止水した止水部１０７と、グロメット８の端部８ｂに電線束１０２とともに巻き付けられたテープ５と、を有している。 The wire harness 101 of this embodiment shown in FIG. 7 includes a wire bundle 102 in which a plurality of electric wires 2 are bundled, and a cylinder that is passed through the wire bundle 102 and is attached to a through hole 9a of a panel 9 that constitutes the automobile. A grommet 8 as a member, a water stop portion 107 that stops water between the wire bundle 102 and the grommet 8, and a tape 5 that is wound around the end portion 8b of the grommet 8 together with the wire bundle 102. Yes.

上記グロメット８は、合成ゴム等で構成されており、一方の端部８ａから他方の端部８ｂに向かうに従って内外径が縮径した筒状に形成されている。また、一方の端部８ａには、全周に亘って、上記パネル９の貫通孔９ａに合致する溝が設けられている。 The grommet 8 is made of synthetic rubber or the like, and is formed in a cylindrical shape whose inner and outer diameters decrease from one end portion 8a toward the other end portion 8b. Moreover, the groove | channel which corresponds to the through-hole 9a of the said panel 9 is provided in the one edge part 8a over the perimeter.

上記テープ５は、上述したグロメット８の他方の端部８ｂの外周に巻き付けられており、グロメット８と電線束１０２とを互いに固定している。 The tape 5 is wound around the outer periphery of the other end 8b of the grommet 8 described above, and fixes the grommet 8 and the wire bundle 102 to each other.

上記止水部１０７は、上記グロメット８の他方の端部８ｂの内側に、付加型の液状発泡シリコーン６が充填されて設けられている。この付加型の液状発泡シリコーン６は、発泡することにより体積が増加し、即ち膨張し、グロメット８と、このグロメット８内を通された電線束１０２との間を隙間なく埋める。 The water stop portion 107 is provided inside the other end portion 8 b of the grommet 8 by being filled with the additional type liquid foamed silicone 6. The additional type liquid foamed silicone 6 expands in volume when foamed, that is, expands, and fills the gap between the grommet 8 and the wire bundle 102 passed through the grommet 8 without any gap.

上述した構成のワイヤハーネス１０１を組み立てる際には、電線束１０２をグロメット８内に通し、グロメット８の他方の端部８ｂの外周に電線束１０２とともにテープ５を巻き付け、注射器等の器具を用いて、グロメット８の他方の端部８ｂの内側に付加型の液状発泡シリコーン６を注入する。そして、所定の時間を置くことにより、グロメット８内に注入された付加型の液状発泡シリコーン６が発泡しつつ膨張して、グロメット８と電線束１０２との間、そして束ねられた複数の電線２間、を隙間なく埋める。 When assembling the wire harness 101 having the above-described configuration, the wire bundle 102 is passed through the grommet 8, the tape 5 is wound around the outer periphery of the other end portion 8b of the grommet 8 together with the wire bundle 102, and an instrument such as a syringe is used. The additional type liquid foam silicone 6 is injected into the inside of the other end 8b of the grommet 8. Then, by adding a predetermined time, the additional type liquid foamed silicone 6 injected into the grommet 8 expands while foaming, and between the grommet 8 and the wire bundle 102 and the plurality of bundled wires 2. Fill the space without any gaps.

そして、さらに時間が経過することにより、付加型の液状発泡シリコーン６は、付加反応が開始されて硬化し始める。この際、電線２の塩化ビニル樹脂で構成された被覆部に接触している箇所は、塩素の影響を受けて付加反応が停止し、硬化せずに粘度が低いまま粘着質の半固体部を形成する。また、電線２の被覆部に接触していない箇所は、固体状の固体部を形成する。このように、止水部１０７は、半固体部と固体部との２重構造となる。こうして止水処理が完了し、ワイヤハーネス１が組み立てられる。 As the time further elapses, the addition-type liquid foamed silicone 6 starts to be cured by the addition reaction. At this time, the portion of the electric wire 2 that is in contact with the covering portion made of the vinyl chloride resin is affected by chlorine and the addition reaction is stopped, and the adhesive semi-solid portion is not cured and remains low in viscosity. Form. Moreover, the location which is not contacting the coating | coated part of the electric wire 2 forms a solid-state solid part. Thus, the water stop part 107 becomes a double structure of a semi-solid part and a solid part. Thus, the water stop process is completed, and the wire harness 1 is assembled.

本実施形態によれば、電線２の塩化ビニル樹脂で構成された被覆部に含まれた塩素による、付加型の液状発泡シリコーン６の付加反応阻害作用、即ち硬化阻害作用、を利用して、止水部１０７に半固体部を形成していることから、長期に亘って高い止水性を保持できる止水部１０７が設けられたワイヤハーネス１０１を提供することができる。 According to the present embodiment, the addition reaction inhibitory action of the addition type liquid foamed silicone 6 by the chlorine contained in the covering part made of the vinyl chloride resin of the electric wire 2, that is, the hardening inhibitory action, is used to stop. Since the semi-solid part is formed in the water part 107, the wire harness 101 provided with the water stop part 107 which can hold | maintain a high water stop for a long term can be provided.

なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。 In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

本発明の第１の実施形態に係るワイヤハーネスを示す斜視図である。1 is a perspective view showing a wire harness according to a first embodiment of the present invention. 図１に示されたワイヤハーネスの分解斜視図である。It is a disassembled perspective view of the wire harness shown by FIG. 図１に示されたワイヤハーネスの組み立て方法を説明するための断面図であり、キャップ内に付加型の液状発泡シリコーンが注入された状態を示す図である。It is sectional drawing for demonstrating the assembly method of the wire harness shown by FIG. 1, and is a figure which shows the state by which the addition type liquid foaming silicone was inject | poured in the cap. 図３に示された状態のキャップ内に電線の端末が収容され、そして、キャップの開口部がテープにより塞がれた状態を示す断面図である。It is sectional drawing which shows the state by which the terminal of the electric wire was accommodated in the cap of the state shown by FIG. 3, and the opening part of the cap was block | closed with the tape. 図４に示された状態のキャップ内の付加型の液状発泡シリコーンが発泡して、キャップ内に隙間無く行き渡った状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which the addition-type liquid foamed silicone in the cap in the state shown in FIG. 図５に示された状態のキャップ内の付加型の液状発泡シリコーンが半固体部及び固体部を形成して止水処理が完了した状態を示す断面図であり、図１中のＡ−Ａ線に沿った断面図である。FIG. 6 is a cross-sectional view showing a state where the addition type liquid foamed silicone in the cap in the state shown in FIG. 5 forms a semi-solid part and a solid part and the water stop treatment is completed, and is taken along line AA in FIG. 1. FIG. 本発明の第２の実施形態に係るワイヤハーネスを示す断面図である。It is sectional drawing which shows the wire harness which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

１，１０１ワイヤハーネス
２電線
３ジョイント端子（端子）
４キャップ（筒状部材）
６付加型の液状発泡シリコーン
７，１０７止水部
８グロメット（筒状部材）
２１芯線
２２被覆部 1,101 Wire harness 2 Electric wire 3 Joint terminal (terminal)
4 Cap (tubular member)
6 Addition-type liquid foamed silicone 7,107 Water stop 8 Grommet (tubular member)
21 Core wire 22 Covering part

Claims

A plurality of electric wires whose outer periphery is covered with an insulating covering, a terminal electrically connecting the core wires of the plurality of electric wires, and a terminal of the plurality of electric wires to which the terminals are connected In a wire harness having a cylindrical member that accommodates the inside, and a water stop portion that stops water between the cylindrical member and a plurality of electric wires and terminals,
The water stop portion is provided between the tubular member and the plurality of electric wires and the terminal, and is filled with additional liquid silicone foam, and
The said covering part is comprised with the insulating material containing the hardening inhibitor of the said addition type liquid foaming silicone. The wire harness characterized by the above-mentioned.

The wire harness according to claim 1, wherein the covering portion is made of a vinyl chloride resin.

The wire harness according to claim 1 or 2, wherein the cylindrical member is made of an insulating material containing a curing inhibitor of the additional liquid silicone foam.

At least one electric wire in which the outer periphery of the core wire is covered with an insulating covering portion, a cylindrical member that accommodates the electric wire inside, a water stop portion that stops water between the cylindrical member and the electric wire, In a wire harness having
The water stop portion is provided between the tubular member and the electric wire and filled with additional liquid foamed silicone, and
The said covering part is comprised with the insulating material containing the hardening inhibitor of the said addition type liquid foaming silicone. The wire harness characterized by the above-mentioned.