JPH0722088A - Structure and method for waterproof wire connection - Google Patents
Structure and method for waterproof wire connectionInfo
- Publication number
- JPH0722088A JPH0722088A JP16276993A JP16276993A JPH0722088A JP H0722088 A JPH0722088 A JP H0722088A JP 16276993 A JP16276993 A JP 16276993A JP 16276993 A JP16276993 A JP 16276993A JP H0722088 A JPH0722088 A JP H0722088A
- Authority
- JP
- Japan
- Prior art keywords
- electric wire
- coating film
- coating material
- liquid
- wire connecting
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数の電線の被覆を一
部除去して露出させた導体を接続端子で接続した電線接
続部の防水構造および、その防水方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure of a wire connecting portion in which conductors exposed by partially removing coatings of a plurality of wires are connected by connecting terminals, and a waterproofing method thereof.
【０００２】[0002]
【従来の技術】この種の露出させた導体を接続端子で接
続した電線接続部の防水対策は、従来より種々提供され
ており、主として、下記の４つの防水対策がある。第１
は、モールド処理するもので、電線接続部を金型に配置
し、溶融したゴム、プラスチック等の防水材を圧入し、
冷却固化した絶縁体をモールド成形し、該絶縁体に電線
接続部を埋め込んで防水処理を行っている。（特開昭６
４−６３０７号）2. Description of the Related Art Conventionally, various waterproof measures for an electric wire connecting portion in which an exposed conductor of this kind is connected by a connection terminal have been provided, and there are mainly the following four waterproof measures. First
Is to be molded, arrange the wire connection part in the mold, press fit the waterproof material such as melted rubber or plastic,
The insulator which is solidified by cooling is molded, and the electric wire connecting portion is embedded in the insulator to perform waterproofing treatment. (JP-A-6
4-6307)
【０００３】第２は、ブチルパッドで被覆するもので、
電線接続部をブチル系ゴムで巻き込み、その上からテー
プ巻きするか、あるいは、電線接続部をブチル系ゴムで
挟んで、プレス機で加圧処理し、その上からテープ巻き
して防水処理を行っている。（特公昭５９−３５５１０
号）The second is to coat with a butyl pad,
Wrap the wire connection part with butyl rubber and tape it over, or sandwich the wire connection part with butyl rubber, pressurize it with a press machine, and tape it over it for waterproofing. ing. (Japanese Patent Publication No. 59-35510)
issue)
【０００４】第３は、熱収縮チューブで被覆するもの
で、電線接続部を熱収縮チューブに通して加熱し、チュ
ーブの収縮を利用して防水処理を行っている。（実開昭
６１−６２３７６号）Thirdly, a heat-shrinkable tube is used for coating. The electric wire connecting portion is passed through the heat-shrinkable tube to be heated, and the shrinkage of the tube is used for waterproofing. (Actual No. 61-62376)
【０００５】第４は、接着剤とテープ巻きを組み合わせ
たもので、電線接続部をフィルム上の接着剤の内部に押
し込んだ後、フィルムを二つ折りして接着して電線接続
部を封止し、その外周にテープを巻きつけて防水処理を
行っている。（実開昭６２−１２３０７２号）The fourth is a combination of an adhesive and a tape winding. After the electric wire connecting portion is pushed into the adhesive on the film, the film is folded in two and adhered to seal the electric wire connecting portion. , A tape is wrapped around the outer periphery to perform waterproofing. (Actual development number 62-123072)
【０００６】[0006]
【発明が解決しようとする課題】上記した第１から第４
の防水処理対策は、いずれも下記の問題があった。即
ち、第１のモールド処理を行う場合、電線サイズ、電線
の分岐形状の相異に応じて金型が必要となり、設備コス
トが高くなり、さらに、作業性に劣る問題がある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Each of the waterproof treatment measures had the following problems. That is, when the first molding process is performed, a mold is required depending on the size of the electric wire and the branch shape of the electric wire, resulting in high equipment cost and poor workability.
【０００７】第２のブチルパッドを用いる場合、ブチル
系ゴムを巻き込むため、電線接続部分の径が大きくなる
と共に重量が増加する。特に、外径が大きくなると配線
出来ない場合も発生する。第３の熱収縮チューブを用い
る場合、電線を予め熱収縮チューブに通すことが非常に
困難で実用性に乏しく、仮に、実用化しても作業性が極
めて悪くなる問題がある。When the second butyl pad is used, since the butyl rubber is rolled in, the diameter of the electric wire connecting portion is increased and the weight is increased. In particular, if the outer diameter becomes large, wiring may not be possible. When the third heat-shrinkable tube is used, it is very difficult to pass an electric wire through the heat-shrinkable tube in advance, which is not practical, and even if it is put into practical use, workability becomes extremely poor.
【０００８】第４の接着剤とテープ巻きを組み合わせる
方法は、本出願人の出願にかかわるもので、第１〜第３
の防水対策と比較して、電線接着部の径が大きくなら
ず、かつ、作業性の点では優れている。しかしながら、
この第４の防水対策では、接着剤はコストが高くつき、
かつ、フィルム上に接着剤を供給するためにディスペン
サが必要となり、設備コストが高くなる欠点がある。特
に、接着剤塗布量は防水性能に大きく影響するため、デ
ィスペンサを精度よく管理する必要があると共に、接着
剤の温度管理、作業場所の温度管理も必要となる。さら
に、接着剤は硬化するまで長時間必要となるため、加工
後、放置しておく必要があり、作業時間が長くかかる。
作業時間の短縮を図るべく、接着剤の硬化前にテープ巻
きして少しでも圧力を加えると、テープ巻きの両端から
接着剤が溢れ出し、防水性能が劣化する欠点があり、か
つ、溢れ出した接着剤により電線同士が接着されてしま
う欠点がある。The fourth method of combining the adhesive and the tape winding is related to the application of the present applicant.
Compared with the waterproofing measure, the diameter of the electric wire bonding portion does not become large and the workability is excellent. However,
With this fourth waterproofing measure, the cost of the adhesive is high,
In addition, a dispenser is required to supply the adhesive onto the film, which has a drawback of increasing equipment cost. In particular, since the amount of adhesive applied has a great influence on the waterproof performance, it is necessary to accurately control the dispenser, as well as the temperature of the adhesive and the temperature of the work place. Furthermore, since the adhesive requires a long time to cure, it is necessary to leave it after processing, which requires a long working time.
If the tape is wound and pressure is applied even before the adhesive is hardened in order to shorten the work time, the adhesive overflows from both ends of the tape winding, and the waterproof performance deteriorates. There is a drawback that the electric wires are adhered to each other by the adhesive.
【０００９】本発明は、上記した従来の問題を解消し、
コストアップとならずに、極めて簡単に防水処理が出来
ると共に、電線接続部の外径を肥大化させず、しかも、
防水性能に優れた電線接続部の防水構造および防水方法
を提供することを目的としている。The present invention solves the above-mentioned conventional problems,
Waterproofing can be performed very easily without increasing the cost, and the outer diameter of the wire connection part is not enlarged.
It is an object of the present invention to provide a waterproof structure and a waterproofing method for an electric wire connecting portion having excellent waterproofing performance.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、複数の電線の露出させた導体を接続する
電線接続部を、液性コーティング材を塗布して形成した
コーティング皮膜で被覆していることを特徴とする電線
接続部の防水構造を提供するものである。In order to achieve the above object, the present invention provides a coating film formed by applying a liquid coating material to an electric wire connecting portion for connecting exposed conductors of a plurality of electric wires. The present invention provides a waterproof structure for an electric wire connecting portion.
【００１１】さらに、上記コーティング皮膜の外周面を
テープ巻きし、あるいは、溶融樹脂を塗布・冷却させて
形成した保護皮膜で被覆している。Further, the outer peripheral surface of the coating film is wrapped with a tape, or is covered with a protective film formed by applying and cooling a molten resin.
【００１２】本発明は、上記防水構造とするために、複
数の電線を露出させた導体を接続する電線接続部を、液
性コーティング材を貯溜している液槽に電線接続部を浸
漬した後、液槽より取り出して乾燥させて、電線接続部
を皮膜するコーティング皮膜で被覆する電線接続部の防
水方法を提供するものである。上記した液槽に浸漬する
代わりに液性コーティング材を塗布してもよい。According to the present invention, in order to obtain the above-mentioned waterproof structure, after the electric wire connecting portion for connecting the conductors in which a plurality of electric wires are exposed is immersed in the liquid tank in which the liquid coating material is stored, The present invention provides a waterproofing method for an electric wire connecting portion which is taken out from a liquid tank and dried to coat the electric wire connecting portion with a coating film. A liquid coating material may be applied instead of dipping in the liquid tank described above.
【００１３】上記コーティング皮膜形成後、コーティン
グ皮膜をテープで多重ラップ巻きし、あるいは、溶融樹
脂を貯溜した液槽にコーティング皮膜で被覆した電線接
続部を浸漬し、ついで、液槽より取り出して乾燥させ、
コーティング皮膜を保護皮膜で被覆している。尚、上記
テープ巻きはコーティング材の液槽に浸漬して引き上げ
た直後、あるいはコーティング材を塗布した直後に、乾
燥なしでテープ巻きを行ってもよい。After forming the above coating film, the coating film is wrapped in multiple wraps with tape, or the electric wire connecting portion coated with the coating film is dipped in a liquid tank containing a molten resin, and then taken out from the liquid tank and dried. ,
The coating film is covered with a protective film. The above-mentioned tape winding may be performed without being dried immediately after being dipped in a liquid bath of the coating material and pulled up, or immediately after applying the coating material.
【００１４】上記コーティング皮膜を形成する液性コー
ティング材としては、アクリル系物質やウレタン系物質
をエマルジョンとして水分散している１液性コーティン
グ材を用いている。あるいは、トルエン等の有機溶媒中
に固形分を溶解させている１液性コーティング材を用い
ている。As the liquid coating material for forming the coating film, a one-liquid coating material in which an acrylic substance or a urethane substance is dispersed in water as an emulsion is used. Alternatively, a one-component coating material in which solid content is dissolved in an organic solvent such as toluene is used.
【００１５】上記テープ巻きに用いるテープは塩化ビニ
ルテープが好適に用いられ、また、保護皮膜と形成する
溶融樹脂として溶融塩化ビニル(ＰＶＣ)が好適に用いら
れる。A vinyl chloride tape is preferably used as the tape for winding the tape, and molten vinyl chloride (PVC) is preferably used as the molten resin to form the protective film.
【００１６】上記液性コーティング材の塗布・乾燥は必
要に応じて所要回数行い、必要な膜厚となるまで繰り返
し行ってもよい。The application and drying of the above liquid coating material may be carried out as many times as necessary, and may be repeated until a required film thickness is obtained.
【００１７】[0017]
【作用】上記電線接続部のコーティング皮膜の形成は、
液性コーティング材を貯溜している液槽に電線接続部を
浸漬し、その後、取り出して乾燥させるだけ、あるい
は、液性コーティング材を塗布して乾燥させるだけでよ
く、誰にでも出来る極めて簡単な作業で、電線接続部を
コーティング皮膜層で被覆することが出来る。該コーテ
ィング皮膜層は、液性コーティング材を用いているた
め、導体の隙間に漏れなく充填され、各導体および導体
を露出させた絶縁被覆端末部を液性コーティング材によ
り確実に被覆でき、よって、確実な防水を図ることがで
きる。しかも、液性であるため、膜厚が肥大化せず、電
線接続部の外径が大きくなることが防止できる。[Function] The formation of the coating film on the electric wire connecting portion is
All you have to do is to immerse the wire connection part in a liquid tank that stores the liquid coating material, then take it out and dry it, or apply the liquid coating material and dry it. In operation, the wire connection part can be covered with the coating film layer. Since the coating film layer uses the liquid coating material, the gap between the conductors is filled without leakage, and the conductor and the insulating coating terminal portion where the conductors are exposed can be reliably covered with the liquid coating material. It is possible to achieve reliable waterproofing. Moreover, since it is liquid, the film thickness does not increase, and the outer diameter of the electric wire connecting portion can be prevented from increasing.
【００１８】さらに、上記コーティング皮膜層の外周面
をテープ巻きし、かつ、このテープ巻きを多重ラップ巻
きとすると、このテープ巻き部分でも確実な防水が図ら
れ、しかも、厚さが大とならず、電線接続部の肥大化を
抑制できる。上記テープ巻きに代えて、溶融塩化ビニル
の液槽に浸漬して保護皮膜を設ける場合、液槽に浸漬し
た後、取り出して冷却させるだけで良いため、誰にでも
出来て、かつ作業性が良く、保護皮膜を形成することが
出来る。また、該保護皮膜も厚さが大とならず、電線接
続部の肥大化を抑制出来る。Further, when the outer peripheral surface of the coating film layer is wound with a tape and the tape winding is a multi-wrap winding, reliable waterproofing is achieved even in this tape winding portion, and the thickness is not large. It is possible to suppress enlargement of the electric wire connecting portion. When a protective film is provided by immersing in a molten vinyl chloride liquid tank instead of the above tape winding, it is enough to immerse it in the liquid tank, take it out and cool it, so that anyone can do it and workability is good. A protective film can be formed. Further, the protective film also does not have a large thickness, and it is possible to suppress enlargement of the electric wire connecting portion.
【００１９】[0019]
【実施例】以下、本発明を、図面を参照して詳細に説明
する。図１および図２は本発明の第１実施例に係わる電
線接続部の防水構造を示し、被覆電線１の中間部分の絶
縁被覆を皮剥ぎして導体１ａを露出させると共に、被覆
電線２の先端部分の絶縁被覆を皮剥ぎして導体２ａを露
出され、これら露出させた導体１ａと２ａとを接続端子
３でかしめ圧着している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 and 2 show a waterproof structure of an electric wire connecting portion according to a first embodiment of the present invention, in which a conductor 1a is exposed by peeling off an insulating coating of an intermediate portion of the covered electric wire 1 and a tip of the covered electric wire 2. The conductor 2a is exposed by peeling off the insulating coating on a part, and the exposed conductors 1a and 2a are crimped and crimped by the connection terminal 3.
【００２０】上記導体１ａ、２ａを接続端子３で圧着し
た電線接続部４では、導体１ａ、２ａおよび金属製の接
続端子３の外面全体および、被覆電線１、２の導体露出
部近傍の絶縁被覆１ｂ、２ｂの外面全体を漏れ無く防水
性を有するコーティング皮膜５を被覆している。該コー
ティング皮膜５は、アクリル系物質あるいはウレタン系
物質をエマルジョンとして水分散している１液性コーテ
ィング材を塗布した後、乾燥させて形成したものであ
る。上記１液性コーティング材として、例えば、旭電化
工業株式会社製のＨＵＸ−２３２、あるいは、東洋イン
キ製造株式会社製のＮＡＮＯＣＲＹＬなどを用いてい
る。In the electric wire connecting portion 4 in which the conductors 1a and 2a are crimped with the connecting terminal 3, the whole outer surface of the conductors 1a and 2a and the metallic connecting terminal 3 and the insulating coating near the exposed conductor portions of the covered electric wires 1 and 2 are covered. The entire outer surface of 1b and 2b is covered with a coating film 5 having a waterproof property without leakage. The coating film 5 is formed by applying a one-component coating material in which an acrylic substance or a urethane substance is dispersed in water as an emulsion and then drying. As the one-component coating material, for example, HUX-232 manufactured by Asahi Denka Kogyo Co., Ltd., or NANOCRYL manufactured by Toyo Ink Mfg. Co., Ltd. is used.
【００２１】上記液性コーティング材に代えて、トルエ
ン等の有機溶媒中に固形分を溶解させている１液性コー
ティング材を用いてもよく、例えば、セメダイン株式会
社製のセメダイン２４０が好適に用いられる。Instead of the above liquid coating material, a one-liquid coating material in which a solid content is dissolved in an organic solvent such as toluene may be used. For example, Cemedine 240 manufactured by Cemedine Co., Ltd. is preferably used. To be
【００２２】上記コーティング皮膜層５の外周面には、
裏面に粘着材が塗布されている塩化ビニルテープ６を２
重ラップ巻きしている。On the outer peripheral surface of the coating film layer 5,
2 pieces of vinyl chloride tape 6 with adhesive on the back
It is wrapped in heavy wrap.
【００２３】上記のように、電線接続部４は、導体、接
続端子および導体露出部近傍の絶縁被覆の全面がコーテ
ィング皮膜５で被覆され、かつ、該コーティング皮膜の
外周面はテープ６を巻いて形成した保護層で保護されて
いる。As described above, in the electric wire connecting portion 4, the entire surface of the insulating coating near the conductor, the connecting terminal and the exposed conductor portion is covered with the coating film 5, and the outer peripheral surface of the coating film is wrapped with the tape 6. It is protected by the formed protective layer.
【００２４】次に、上記防水構造を形成する防水方法に
ついて説明する。図３に示すように、まず、被覆電線１
と２の所要箇所の皮剥ぎを行い、導体１ａ、２ａを絶縁
被覆１ｂ、２ｂより露出させる。尚、実施例では被覆電
線１、２として、断面積が０.５mm2のものを用いている
ついで、導体１ａと２ａをＵ字形状の金属製接続端子３
でかしめ圧着する。Next, a waterproof method for forming the waterproof structure will be described. As shown in FIG. 3, first, the covered electric wire 1
The required portions 2 and 2 are peeled off to expose the conductors 1a and 2a from the insulating coatings 1b and 2b. In the embodiment, the coated electric wires 1 and 2 having a cross-sectional area of 0.5 mm 2 are used, and the conductors 1a and 2a are connected to the U-shaped metal connecting terminal 3
Crimp and crimp.
【００２５】その後、上記１液性コーティング材を貯溜
している液槽１０に電線接続部４を約１秒浸漬する。浸
漬した後、液槽１０より取り出し、自然乾燥する。この
乾燥時間を短縮するために、水分散コーティング材で
は、アルコールを添加することが好ましく、その場合、
４０秒で乾燥させることが出来る。上記液性コーティン
グ材は乾燥すると、 固化して皮膜となり、コーティン
グ皮膜５を形成する。After that, the electric wire connecting portion 4 is immersed in the liquid tank 10 storing the one-liquid coating material for about 1 second. After the immersion, it is taken out of the liquid tank 10 and naturally dried. In order to shorten the drying time, it is preferable to add alcohol in the water-dispersed coating material, in which case,
It can be dried in 40 seconds. When the liquid coating material is dried, it solidifies to form a film, forming a coating film 5.
【００２６】ついで、裏面に粘着材が塗布された塩化ビ
ニルテープ６を、被覆電線１の一方側の導体露出部近傍
の絶縁被覆１ｂの外周面より巻き付け、コーティング皮
膜５の外周面に巻き付けた後、一体化した被覆電線１の
他方側の導体露出部近傍および被覆電線２の導体露出部
近傍の被覆電線１ｂおよび２ｂの外周面に巻き付ける。Then, a vinyl chloride tape 6 having a back surface coated with an adhesive material is wound around the outer peripheral surface of the insulating coating 1b in the vicinity of the exposed conductor on one side of the coated electric wire 1 and then wound around the outer peripheral surface of the coating film 5. Then, it is wound around the outer peripheral surfaces of the covered electric wires 1b and 2b in the vicinity of the exposed conductor portion of the other side of the integrated covered electric wire 1 and in the exposed conductor portion of the covered electric wire 2.
【００２７】上記第１実施例の防水構造を施した電気接
続部の防水性能は、測定実験した結果、０.３kgf/cm2で
あった。尚、 上記防水性能は、 電線端末から空気圧力
を加え、その圧力によりコーティング皮膜５に孔が空い
た数値である。よって、測定値が大きくなる程、コーテ
ィング皮膜に孔が空きにくくなり、防水性能が高いこと
を示す。The waterproof performance of the electrical connecting portion having the waterproof structure of the first embodiment was 0.3 kgf / cm 2 as a result of a measurement experiment. The waterproof performance is a numerical value in which the air pressure is applied from the end of the electric wire and the coating film 5 has holes due to the pressure. Therefore, the larger the measured value, the less likely the holes are formed in the coating film, indicating that the waterproof performance is high.
【００２８】上記第１実施例では、液性コーティング槽
１０への浸漬は１回で、該浸漬後に乾燥させてコーティ
ング皮膜５を形成しているが、液性コーティング材の液
槽１０への浸漬・乾燥を複数回繰り返すと、コーティン
グ皮膜５の膜厚を大として、防水性能を高めることがで
きる。In the first embodiment, the liquid coating tank 10 is immersed once, and the coating film 5 is formed by drying after the immersion. However, the liquid coating material is immersed in the liquid tank 10. -By repeating drying a plurality of times, the film thickness of the coating film 5 can be increased and the waterproof performance can be improved.
【００２９】第１実施例の変形例１として、上記液槽１
０への浸漬、その後、液槽から引き上げて、乾燥させる
工程を２回繰りした。この場合、防水性能が０.４５kgf
/cm2となった。 また、 ４回繰り返した場合、防水性能
は０.８kgf/cm2となった。尚、コーティング皮膜の膜厚
は、液槽への浸漬と乾燥を１回行った場合は３０〜５０
μｍ、２回繰り返した場合は８０〜１００μｍ、４回繰
り返した場合は１８０〜２００μｍとなった。As a modified example 1 of the first embodiment, the above liquid tank 1
The process of immersing in 0, then pulling out from the liquid tank and drying was repeated twice. In this case, the waterproof performance is 0.45kgf
It became / cm 2 . Also, when it was repeated 4 times, the waterproof performance was 0.8 kgf / cm 2 . Incidentally, the film thickness of the coating film is 30 to 50 when the immersion in the liquid tank and the drying are performed once.
μm was 80 to 100 μm when it was repeated twice, and 180 to 200 μm when it was repeated 4 times.
【００３０】上記第１実施例では、液性コーティング材
の液槽１０より引き上げた後、自然乾燥しているが、加
熱して強制乾燥しても良い。この場合、コーティング皮
膜５の形成時間を短縮することができる。第１実施例の
変形例２として、上記加熱による強制乾燥を行った。す
なわち、液槽１０より引き上げたのち、８０℃の熱風を
付与して短時間でコーティング皮膜５を形成した。上記
強制乾燥の時間は、液性コーティング材が水分散コーテ
ィング材の場合は１０秒、有機溶剤系コーティング材の
場合は５秒とした。上記変形例２の加熱による強制乾燥
後、テープ６を巻きを行って完成した後、防水性能を測
定すると、上記第１実施例と同程度であった。In the first embodiment, the liquid coating material is pulled out of the liquid tank 10 and then naturally dried, but it may be heated and forcedly dried. In this case, the formation time of the coating film 5 can be shortened. As a modified example 2 of the first embodiment, forced drying by the above heating was performed. That is, after pulling up from the liquid tank 10, hot air at 80 ° C. was applied to form the coating film 5 in a short time. The forced drying time was 10 seconds when the liquid coating material was a water dispersion coating material and 5 seconds when it was an organic solvent coating material. After the forced drying by the heating of the modified example 2 and the winding of the tape 6 to complete the completion, the waterproof performance was measured and it was about the same as the first embodiment.
【００３１】上記第１実施例では、常温の電気接続部４
を、水や有機溶媒で溶融した常温の液性コーティング材
の液槽に浸漬させており、液槽より引き上げた後、乾燥
により水や有機溶媒を蒸発させることによりコーティン
グ材を固化させて皮膜を形成している。よって、１回の
工程で形成されるコーティング皮膜の膜厚を一定以上と
するができない。これに対して、電気接続部４を加熱し
た状態で液槽に浸漬させると、水あるいは有機溶媒を蒸
発させて液槽内でコーティング皮膜を形成でき、このコ
ーティング皮膜の表面に更に溶融したコーティング材を
付着させることが出来るので、１回の工程でコーティン
グ皮膜の膜厚を大と出来る。また、電気接続部４を加熱
して液槽に浸漬し、浸漬直後に引きあげても、薄いコー
ティング皮膜を形成することが出来、コーティング皮膜
の形成時間の短縮化を図ることが出来る。In the first embodiment described above, the electrical connection portion 4 at room temperature is used.
Is immersed in a liquid tank of liquid coating material at room temperature melted with water or an organic solvent, and after pulling out of the liquid tank, the coating material is solidified by evaporating water or organic solvent by drying to form a film. Is forming. Therefore, the thickness of the coating film formed in one step cannot be set to a certain value or more. On the other hand, when the electrical connection part 4 is immersed in a liquid tank while being heated, water or an organic solvent can be evaporated to form a coating film in the liquid tank, and the coating material further melted on the surface of the coating film. Since it can be attached, the thickness of the coating film can be increased in one step. Further, even if the electric connection part 4 is heated and immersed in the liquid tank and pulled up immediately after the immersion, a thin coating film can be formed, and the time for forming the coating film can be shortened.
【００３２】よって、第１実施例の変形例３として、加
熱した電気接続部４を液槽１０に浸漬し、浸漬直後に引
き上げて、薄いコーティング皮膜５を形成した。この変
形例３の方法で形成したコーティング皮膜５を電気接続
部４に施したものにおいても、０.１５kghf/cm2の防水
性能が得られた。尚、 上記工程を複数回行い、 薄いコ
ーティング皮膜を厚くしていくと、 防水性能を高める
ことが出来ることは言うまでもない。Therefore, as a modified example 3 of the first embodiment, the heated electrical connection portion 4 was immersed in the liquid tank 10 and pulled up immediately after the immersion to form a thin coating film 5. Even in the case where the coating film 5 formed by the method of this modification 3 was applied to the electrical connection portion 4, the waterproof performance of 0.15 kghf / cm 2 was obtained. Needless to say, the waterproof performance can be improved by performing the above steps multiple times to increase the thickness of the thin coating film.
【００３３】上記第１実施例の液性コーティング材で
は、その固形分率を２０〜４０％として、１回の工程で
１００μｍ以下の膜厚のコーティング皮膜を形成してい
るが、固形分率を５０〜７０％に増加させて液体の粘度
を下げると、１回の工程でコーティング皮膜５の厚さを
２００μｍ程度と大きくすることが出来、防水性能を高
めることが出来る。In the liquid coating material of the first embodiment described above, the solid content ratio is 20 to 40%, and a coating film having a thickness of 100 μm or less is formed in one step. When the viscosity of the liquid is reduced by increasing it to 50 to 70%, the thickness of the coating film 5 can be increased to about 200 μm in one step, and the waterproof performance can be improved.
【００３４】よって、第１実施例の変形例４として、液
性コーティング材の固形分率を５０〜７０％として、１
回の工程で２００μｍ程度のコーティング皮膜５を形成
した。尚、上記変形例４により、１回の工程で膜厚を大
とすると、この工程を複数回、繰り返すことにより、コ
ーティング皮膜５の表面に施しているテープ巻き処理を
不要とすることも出来る。Therefore, as a modified example 4 of the first embodiment, the solid content ratio of the liquid coating material is 50 to 70%, and
The coating film 5 having a thickness of about 200 μm was formed in the same process. According to the modification 4, if the film thickness is increased in one step, the tape winding process applied to the surface of the coating film 5 can be unnecessary by repeating this step a plurality of times.
【００３５】図４および図５は本発明の第２実施例を示
すものである。上記第１実施例およびその変形例１〜変
形例４ではコーティング皮膜５を形成した後、その表面
にテープ巻き処理を施して防水保護を図っているが、第
２実施例では、テープ巻きに代えて、コーティング皮膜
形成方法と同様な方法で、溶融樹脂を貯溜した液槽にコ
ーティング皮膜５を施した電気接続部４を浸漬し、所要
時間経過後に液槽より引き上げ、冷却して保護皮膜２０
を形成している。4 and 5 show a second embodiment of the present invention. In the first embodiment and the modified examples 1 to 4 thereof, after the coating film 5 is formed, the surface is subjected to tape winding treatment for waterproof protection, but in the second example, it is replaced with tape winding. Then, in the same manner as the coating film forming method, the electrical connection portion 4 provided with the coating film 5 is immersed in a liquid tank in which the molten resin is stored, and after a lapse of a required time, the electric connection part 4 is pulled out from the liquid tank and cooled to form the protective film
Is formed.
【００３６】即ち、第２実施例からなる電気接続部の防
水構造では、コーティング皮膜５の表面に溶融樹脂、本
実施例では溶融ＰＶＣ（溶融塩化ビニル）を塗布・冷却
して保護皮膜２０を形成している。That is, in the waterproof structure of the electric connection portion according to the second embodiment, the protective film 20 is formed by applying and cooling molten resin, in this embodiment, molten PVC (molten vinyl chloride) on the surface of the coating film 5. is doing.
【００３７】該保護皮膜２０は、図６に示すように、第
１実施例と同一の工程でコーティング皮膜５を形成した
後、溶融ＰＶＣの液槽２１に浸漬し、所要時間経過した
後、液槽２１より引き上げて冷却させ、塩化ビニルから
なる保護皮膜２０をコーティング皮膜５の表面側に所要
の厚さで形成している。第２実施例のその他の点は、上
記した第１実施例と同様であるので、同一の要素には同
一の符号を付して説明を省略する。As shown in FIG. 6, the protective film 20 is formed by forming the coating film 5 in the same process as in the first embodiment, immersing it in a molten PVC liquid tank 21, and after a required time elapses, A protective film 20 made of vinyl chloride is formed on the surface side of the coating film 5 with a required thickness by pulling it up from the tank 21 and cooling it. Since the other points of the second embodiment are the same as those of the above-mentioned first embodiment, the same elements are designated by the same reference numerals and the description thereof will be omitted.
【００３８】尚、本発明は上記実施例に限定されるもの
ではなく、種々の変形が可能である。例えば、第１実施
例および第２実施例はコーティング皮膜を形成するため
に液性コーティング材の液槽に浸漬しているが、この浸
漬方法に代えて、液性コーティング材をスプレーあるい
はブラシで電気接続部４に塗布してもよい。ただし、液
の浸透性の点からは、液槽に浸漬する方が好ましい。The present invention is not limited to the above embodiment, but various modifications can be made. For example, in the first and second embodiments, the liquid coating material is dipped in a liquid tank to form a coating film. Instead of this dipping method, the liquid coating material is sprayed or brushed electrically. You may apply to the connection part 4. However, from the viewpoint of the permeability of the liquid, it is preferable to immerse it in the liquid tank.
【００３９】[0039]
【発明の効果】以上の説明より明らかなように、本発明
に係わる電気接続部の防水構造では、露出させた導体を
接続端子で接続した電気接続部を液性コーティング材に
浸漬する等により塗布し、これを乾燥させて固化し、皮
膜としているため、電気接続部の導体、接続端子、絶縁
被覆端末等の外周面全面に漏れなくコーティング皮膜を
被覆することが出来る。よって、コーティング皮膜を設
けるだけでも確実に防水を図ることが出来る。しかも、
該コーティング皮膜の表面にテープ巻き、あるいは、塩
化ビニル樹脂からなる保護皮膜を施すと、さらに、電気
接続部の機械的性能を高めることが出来る。As is apparent from the above description, in the waterproof structure of the electric connecting portion according to the present invention, the electric connecting portion in which the exposed conductor is connected by the connecting terminal is applied by immersing it in a liquid coating material or the like. Since this is dried and solidified to form a film, it is possible to coat the entire outer peripheral surface of the conductor, the connection terminal, the insulating coated terminal, and the like of the electrical connection portion with no leakage. Therefore, waterproofing can be surely achieved only by providing the coating film. Moreover,
If the surface of the coating film is wrapped with a tape or a protective film made of vinyl chloride resin is applied, the mechanical performance of the electrical connection portion can be further enhanced.
【００４０】また、液性コーティング材を塗布・乾燥し
て固化させた皮膜を電気接続部に被覆する構造としてい
るため、隙間には漏れなく浸透する一方、必要以上に膜
厚が肥大化せず、重量の増加しない。よって、外径が大
きくなることにより配線が困難となる問題が発生しな
い。Further, since the electric connection portion is covered with the coating formed by applying and drying the liquid coating material and then solidifying the coating, it does not leak into the gap and the film thickness does not increase more than necessary. , No increase in weight. Therefore, the problem that the wiring becomes difficult due to the increase in the outer diameter does not occur.
【００４１】さらに、本発明に係わる防水方法を用いる
と浸漬用の液槽が必要なだけで、特殊な設備を必要とせ
ず、コストアップとならずに、防水を施すことが出来
る。しかも、液槽に浸漬し、所要時間経過後に引き上げ
て感想させるだけであるため、あるいは、液性コーティ
ング材を塗布するだけであるため、防水処理作業が極め
て簡単でだれでも行うことができる利点がある。Further, when the waterproofing method according to the present invention is used, only the liquid tank for immersion is required, no special equipment is required, and the waterproofing can be performed without increasing the cost. Moreover, since it is simply immersed in a liquid tank and pulled up after a required time to give an impression, or because only a liquid coating material is applied, the waterproofing work is extremely simple and can be performed by anyone. is there.
【図１】 本発明の第１実施例を示す部分断面図であ
る。FIG. 1 is a partial sectional view showing a first embodiment of the present invention.
【図２】 図１のII−II線断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】 第１実施例の作業工程を示す概略図である。FIG. 3 is a schematic view showing a work process of the first embodiment.
【図４】 本発明の第２実施例を示す部分断面図であ
る。FIG. 4 is a partial sectional view showing a second embodiment of the present invention.
【図５】 図４のV−V線断面図である。5 is a sectional view taken along line VV of FIG.
【図６】 第２実施例の作業工程を示す概略図である。FIG. 6 is a schematic view showing a work process of the second embodiment.
１、２ 被覆電線 １ａ、２ａ 導体 ３ 接続端子 ５ コーティング皮膜 ６ テープ １０、２１ 液槽 ２０ 保護皮膜 1, 2 Coated electric wire 1a, 2a Conductor 3 Connection terminal 5 Coating film 6 Tape 10, 21 Liquid tank 20 Protective film
Claims (9)
電線接続部を、液性コーティング材を塗布して形成した
コーティング皮膜で被覆している電線接続部の防水構
造。1. A waterproof structure of an electric wire connecting portion in which an electric wire connecting portion connecting an exposed conductor of a plurality of electric wires is covered with a coating film formed by applying a liquid coating material.
巻きしている請求項１記載の電線接続部の防水構造。2. The waterproof structure for an electric wire connecting portion according to claim 1, wherein an outer peripheral surface of the coating film is wound with a tape.
脂を塗布・冷却させて形成した保護皮膜で被覆している
請求項１記載の電線接続部の防水構造。3. The waterproof structure for an electric wire connecting portion according to claim 1, wherein the outer peripheral surface of the coating film is covered with a protective film formed by applying and cooling molten resin.
コーティング材として、アクリル系物質やウレタン系物
質をエマルジョンして水分散している１液性コーティン
グ材、あるいはトルエン等の有機溶媒中に固形分を溶解
させている１液性コーティング材を用いている前記請求
項に記載の電線防水構造。4. The liquid coating material for forming the coating film layer is a one-liquid coating material in which an acrylic substance or a urethane substance is emulsified and dispersed in water, or a solid content in an organic solvent such as toluene. The electric wire waterproof structure according to claim 1, wherein a one-liquid coating material in which is dissolved is used.
溶融塩化ビニル等の熱可塑性樹脂を用いている請求項３
記載の電線接続部の防水構造。5. A thermoplastic resin such as molten vinyl chloride is used as the molten resin forming the protective film.
Waterproof structure of the electric wire connection part.
電線接続部を、液性コーティング材を貯溜している液槽
に電線接続部を浸漬した後、液槽より取り出して乾燥さ
せ、あるいは、液性コーティング材を塗布した後に乾燥
させて、電線接続部をコーティング皮膜で被覆している
電線接続部の防水方法。6. An electric wire connecting part for connecting exposed conductors of a plurality of electric wires is dipped in a liquid tank storing a liquid coating material, then taken out from the liquid tank and dried, or , A method of waterproofing a wire connecting part in which a liquid coating material is applied and then dried to coat the wire connecting part with a coating film.
で多重ラップ巻きしている請求項６記載の電線接続部の
防水方法。7. The waterproofing method for an electric wire connecting portion according to claim 6, wherein the outer peripheral surface of the coating film is wound in multiple wraps with a tape.
続部を溶融樹脂を貯溜した液槽に浸漬した後、液槽より
取り出して冷却させ、コーティング皮膜槽を保護皮膜で
被覆している請求項６記載の電線接続部の防水方法。8. The coating film tank is covered with a protective film by immersing the electric wire connecting portion coated with the coating film in a liquid tank in which molten resin is stored, then taking out from the liquid tank and cooling it. How to waterproof the electric wire connection part.
乾燥し、この塗布・乾燥を所要回数行い、所要厚さのコ
ーティング皮膜を形成している請求項６記載の電線接続
部の防水方法。9. The waterproofing method for an electric wire connecting portion according to claim 6, wherein the liquid coating material is applied and then dried, and the application and drying are performed a required number of times to form a coating film having a required thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16276993A JPH0722088A (en) | 1993-06-30 | 1993-06-30 | Structure and method for waterproof wire connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16276993A JPH0722088A (en) | 1993-06-30 | 1993-06-30 | Structure and method for waterproof wire connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0722088A true JPH0722088A (en) | 1995-01-24 |
Family
ID=15760876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16276993A Pending JPH0722088A (en) | 1993-06-30 | 1993-06-30 | Structure and method for waterproof wire connection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722088A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100772782B1 (en) * | 2003-10-31 | 2007-11-01 | 타이코 일렉트로닉스 레이켐 케이. 케이. | Waterproof type lead and method of making waterproof type lead |
| KR101305159B1 (en) * | 2011-07-27 | 2013-09-12 | 현대 파워텍 주식회사 | Oil pump for automatic transmission |
-
1993
- 1993-06-30 JP JP16276993A patent/JPH0722088A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100772782B1 (en) * | 2003-10-31 | 2007-11-01 | 타이코 일렉트로닉스 레이켐 케이. 케이. | Waterproof type lead and method of making waterproof type lead |
| KR101305159B1 (en) * | 2011-07-27 | 2013-09-12 | 현대 파워텍 주식회사 | Oil pump for automatic transmission |
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