JP4043914B2 - Water shutoff method and water shutoff treatment device for wire harness - Google Patents

Water shutoff method and water shutoff treatment device for wire harness Download PDF

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JP4043914B2
JP4043914B2 JP2002311287A JP2002311287A JP4043914B2 JP 4043914 B2 JP4043914 B2 JP 4043914B2 JP 2002311287 A JP2002311287 A JP 2002311287A JP 2002311287 A JP2002311287 A JP 2002311287A JP 4043914 B2 JP4043914 B2 JP 4043914B2
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water
grommet
stopping
wire harness
wire
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JP2004146254A (en
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洋司 鈴木
浩代 鮎沢
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Yazaki Corp
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Yazaki Corp
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Description

【0001】
【発明の属する技術分野】
本発明はワイヤハーネスの止水方法及び止水処理装置に関し、特に、自動車の車体パネルに形成された取付孔にグロメットを使用してワイヤハーネスを挿通保持させる場合に、ワイヤハーネスを構成する電線束とグロメットとの間に止水剤を充填して密封するワイヤハーネスの止水方法の改良に関する。
【0002】
【従来の技術】
例えば自動車の車体パネルに形成された取付孔にワイヤーハーネスを挿通保持させる為のグロメットとしては、ワイヤハーネスを構成する電線束とグロメットとの間に止水剤を充填して密封するグロメットや止水構造体がある(例えば、特許文献1及び特許文献2)。
図10に示すグロメット1は、ワイヤハーネスの電線束2を挿通する筒状の電線保持部3の一端に漏斗状のグロメット本体(拡径部)4を連成してなる。グロメット本体4には、内壁面に電線挿通方向へ延びる内筒部5が設けられている。
【0003】
そして、前記グロメット1に電線束2を挿通し、電線保持部3から粘着テープ6を巻き下ろした後、上方に向けた前記グロメット本体4の開口4aから止水剤7を流し込んで、グロメット1と電線束2との間の空間及び電線束内の隙間を密封し、止水剤7を硬化させる。
【0004】
そこで、上記グロメット1のワイヤハーネスへの取付け作業及び止水剤7の充填作業は、第1工程でワイヤハーネスを構成する電線群を集束して粘着テープ等で結束し、第2工程でグロメット1の電線保持部3にワイヤハーネスを挿通させ、第3工程でワイヤハーネスの所定の位置にグロメット1が位置するように、電線保持部3の先端とワイヤハーネスに粘着テープ6を巻き付けて固定し、第4工程でグロメット1の開口4aを上方に向けた状態で内筒部5へ止水剤7を図示しない注入機のノズルより注入し、第5工程で注入した止水剤7を硬化させた後、第6工程でワイヤハーネスの仕上げ検査を行なっている。
【0005】
【特許文献1】
特開平8−116615号公報(第3頁、第1図)
【特許文献2】
特開平9−112754号公報(第1頁、第6図)
【0006】
【発明が解決しようとする課題】
上述したように、上記グロメット1への止水剤7の注入工程(第4工程)は、ワイヤハーネスの組立工程(第1工程〜第3工程)とワイヤハーネスの仕上げ工程(第6工程)との間で行なうために、ワイヤハーネス製造工程(第1工程〜第6工程)のライン上で行なう必要があり、止水剤7の注入工程を別ラインや別の場所で行なうことができなかった。
そして、上記止水剤7として使用されている二液ウレタンシール材や嫌気性接着剤等は、速くても1時間以上の硬化時間が必要であり、グロメット1内へ止水剤7が充填されたワイヤハーネスには、1時間以上の硬化待ち時間が発生してしまう。又、止水剤の硬化時間は、周囲温度に影響されるので、季節の違いによっても硬化時間が変わってしまい、硬化待ち時間の管理も難しい。
【0007】
そこで、従来のワイヤハーネスの製造方法では、ワイヤハーネスの組立工程における段取り時間や加工時間に比べて待ち時間が長くなり、製造リードタイムが長くかかってしまうという問題があった。
又、止水剤が硬化するまでの間、ワイヤハーネスを製造ラインにストックしなければならず、止水処理工程に広いスペースが必要になってしまうという問題があった。
【0008】
従って、本発明の目的は上記課題を解消することに係り、効率良く電線束とグロメットとの間の止水処理を行うことができる良好なワイヤハーネスの製造方法及び止水方法を提供することにある。
【0012】
【課題を解決するための手段】
発明の上記目的は、グロメットが取り付けられるワイヤハーネスのグロメット取付け部位における電線間に止水剤を充填して加熱硬化させることにより、前記グロメットの電線保持部の内径以上の外径を備えた止水処理部を形成する為のワイヤハーネスの止水方法であって、
前記グロメット取付け部位の電線束を囲んで形成される前記止水剤の充填空間上方部に前記止水処理部の外径より大きな拡大空間を形成して該拡大空間内で電線束をほぐす工程と、前記充填空間に止水剤を注入して電線間に止水剤を充填する工程と、前記拡大空間にスペーサを補完的に装填して充塞する工程と、前記充填空間内の止水剤を加熱硬化する工程とを備えたことを特徴とするワイヤハーネスの止水方法により達成される。
【0013】
又、本発明の上記目的は、グロメットが取り付けられるワイヤハーネスのグロメット取付け部位における電線間に止水剤を充填して加熱硬化させることにより、前記グロメットの電線保持部の内径以上の外径を備えた止水処理部を形成する為のワイヤハーネスの止水方法であって、
前記グロメット取付け部位の電線束を囲んで形成される前記止水剤の充填空間上方部に前記止水処理部の外径より大きな拡大空間を形成して該拡大空間内で電線束をほぐす工程と、前記充填空間に止水剤を注入して電線間に止水剤を充填する工程と、前記グロメット取付け部位を前記充填空間の下方に変位させて前記拡大空間内の止水剤を前記充填空間の下方部に流入させる工程と、前記充填空間内の止水剤を加熱硬化する工程とを備えたことを特徴とするワイヤハーネスの止水方法により達成される。
【0014】
上記構成のワイヤハーネスの止水方法によれば、止水処理部が設けられるグロメット取付け部位の電線束は、予めほぐされてから電線間に止水剤が充填されるので、電線間を確実にシールすることができる。更に、前記止水剤は、電線束をほぐす為の前記拡大空間内では硬化させられないので、加熱硬化された止水処理部の形状がコンパクトになる。
【0015】
更に、本発明の上記目的は、グロメットが取り付けられるワイヤハーネスのグロメット取付け部位における電線間に止水剤を充填して加熱硬化させることにより、前記グロメットの電線保持部の内径以上の外径を備えた止水処理部を形成する為のワイヤハーネスの止水処理装置であって、
前記グロメット取付け部位の電線束を囲んで前記止水剤の充填空間を形成するアダプター金型と、抱持した前記アダプター金型を介して前記止水剤を加熱可能な加熱手段を備えた加熱用金型とを有しており、
前記充填空間の径が異なる複数種のアダプター金型のうちの何れか一つが、前記グロメット取付け部位の電線束の径に対応して前記加熱用金型に着脱自在に抱持されることを特徴とするワイヤハーネスの止水処理装置により達成される。
【0016】
上記構成のワイヤハーネスの止水処理装置によれば、グロメット取付け部位の電線束の径に対応して充填空間の径が異なる複数種のアダプター金型のうちの何れか一つを選択的に加熱用金型に抱持させることにより、電線束のサイズが異なる複数種のワイヤハーネスに容易に対応することができる。
【0017】
また、ワイヤハーネスのグロメット取付け部位に設けられる止水処理部が、予め成形金型内で電線間に充填した止水剤を加熱硬化させることにより形成されるので、止水剤の硬化時間を短縮することができる。
そこで、ワイヤハーネスの組立工程における待ち時間が短くなり、製造リードタイムを短くできると共に、止水剤が硬化するまでワイヤハーネスを製造ラインにストックする必要がなくなり、止水処理工程の占有スペースを狭めることができ、生産性向上を図ることができる。
【0018】
また、グロメットの電線保持部に圧入固定される前記止水処理部が、該電線保持部の内径以上の外径を備えるように予め止水剤を加熱硬化させることによって形成されるので、グロメットの電線保持部は、該止水処理部に対する締付け力を一定にでき、止水性能が安定する。
【0019】
【発明の実施の形態】
以下、添付図面に基づいて本発明の一実施形態に係るワイヤハーネスの製造方法及び止水方法を詳細に説明する。
図1は、本発明の一実施形態に係るワイヤハーネスの製造方法に係る止水処理装置の分解斜視図である。
【0020】
図1に示すように、本実施形態に係るワイヤハーネスの止水処理装置11は、グロメット41が取り付けられるワイヤハーネス12のグロメット取付け部位14における電線16間に止水剤(2液反応硬化性のウレタン、エポキシ、シリコン等)17を充填して加熱硬化させることにより、前記グロメット41の電線保持部43の内径以上の外径を備えた止水処理部31を形成するものであり(図6、参照)、アダプター金型21と加熱用金型25とから成る成形金型を有する。
【0021】
前記アダプター金型21は、全体として略円筒状を半割りした形状をなす一対の半割り部品22,23から成り、ワイヤハーネス12のグロメット取付け部位14を挟むように一対の半割り部品22,23を組付けてロックすると、各半割り部品22,23の対向面に形成された半円状の凹部22a,23aが、前記グロメット取付け部位14の電線束を囲んで止水剤17を充填する為の充填空間24を形成する(図3、参照)。
尚、前記アダプター金型21は、前記グロメット取付け部位14の電線束の径が異なる種々のワイヤハーネス12に対応して、前記充填空間24の径が異なる複数種のものが用意される。
【0022】
前記加熱用金型25は、前記アダプター金型21を着脱自在に抱持する取付け凹部26を備えると共に、加熱手段であるヒータユニット28が内蔵されており、抱持した前記アダプター金型21を介して充填空間24内の止水剤17を加熱することができる。
前記取付け凹部26の内壁面には嵌合溝27が刻設されており、前記アダプター金型21の外壁面に突設された嵌合突起22b,23bを挿入案内すると共に、図2に示したように該アダプター金型21を嵌合固定する。
【0023】
次に、上記止水処理装置11を用いてワイヤハーネス12を構成する電線束とグロメット41との間に止水剤17を充填して密封するワイヤハーネスの製造方法を説明する。
先ず、ワイヤハーネス12のグロメット取付け部位14における電線束の径に対応したアダプター金型21を選択し、該グロメット取付け部位14を挟むように一対の半割り部品22,23を組付ける。この際、前記各凹部22a,23aの下端に形成された挟持部24aが、グロメット取付け部位14の電線束を挟持固定する。
【0024】
次に、前記加熱用金型25の嵌合溝27に嵌合突起22b,23bを挿入案内させながら、図2に示したように、前記アダプター金型21を嵌合固定する。すると、図3に示したように、前記グロメット取付け部位14の電線束を囲んで止水剤17を充填する為の略円柱状の充填空間24が形成される。
【0025】
次に、図4に示すように、前記充填空間24内に止水剤17を注入機のノズル30より注入する。該充填空間24の上部は、外方広がりの円錐面とされているので、ノズル30による注入が容易である。
更に、止水剤17の注入が完了した後、加熱用金型25のヒータユニット28によりアダプター金型21を介して充填空間24内の止水剤17を加熱(60〜80℃)し、硬化させる。尚、前記加熱用金型25は、予め温めておくと良い。
【0026】
そして、所定時間(10分程度)経過後、これら加熱用金型25及びアダプター金型21からワイヤハーネス12を取り出すと、図5に示したように、該ワイヤハーネス12のグロメット取付け部位14には止水処理部31が形成される。
ここで、前記止水処理部31は、グロメット41の電線保持部43の内径以上の外径を備えるように形成されるので、図6に示したように、該電線保持部43内に圧入固定された際には、止水処理部31に対する該電線保持部43の締付け力を一定にでき、グロメット41に止水状態で挿通保持されるワイヤハーネス12の止水性能が安定する。また、前記電線保持部43の先端は、粘着テープ46によりワイヤハーネス46に巻き付け固定される。
【0027】
即ち、本実施形態のワイヤハーネスの製造方法によれば、ワイヤハーネス12のグロメット取付け部位14に設けられる止水処理部31が、予めアダプター金型21の充填空間24内で電線16間に充填した止水剤17を加熱硬化させることにより形成されるので、常温硬化させていた従来に比べて止水剤17の硬化時間を大幅に短縮することができた。
【0028】
そこで、ワイヤハーネス12の組立工程における待ち時間が短くなり、製造リードタイムを短くできると共に、止水剤17が硬化するまでワイヤハーネス17を製造ラインにストックする必要がなくなり、止水処理工程の占有スペースを狭めることができ、生産性向上を図ることができる。
例えば、上記止水処理装置11を4面のターンテーブル上にそれぞれセットし、ワイヤハーネス組立工程のタクトタイムに合わせてハーネスの金型セット、止水剤注入、加熱硬化、離型を繰り返して止水処理することで、非常に効率良くワイヤハーネスを製造することができる。
【0029】
また、上記止水処理装置11によれば、グロメット取付け部位14の電線束の径に対応して充填空間24の径が異なる複数種のアダプター金型21のうちの何れか一つを選択的に加熱用金型25に抱持させることにより、電線束のサイズが異なる複数種のワイヤハーネス12に容易に対応することができる。
【0030】
更に、前記止水処理部31のグロメット拡径部側(図6中、上側)の端部には、半径方向外方へ突出するフランジ部32が設けられている。
そこで、前記止水処理部31がグロメット41の電線保持部43に圧入される際、前記フランジ部32がストッパーとしてグロメット拡径部の内壁に当接するので、位置決めが容易となる。
【0031】
また、前記フランジ部32は、止水処理部31の本体より大きな外径を有しているので、該フランジ部32内に密封される電線束は、前記止水処理部31の本体内に密封される電線束に比べて散けることができ、止水剤17の充填時にはこの電線間に止水剤17が入り込み易くなり、電線間における止水の確実性が更に向上する。
【0032】
図7及び図8は、本発明の一実施形態に係るワイヤハーネスの止水方法を説明する為の止水処理装置の概略断面図である。尚、加熱用金型25等の上記止水処理装置11と同様の構成部品については、同符号を付して詳細な説明を省略する。
図7(a)に示したように、本実施形態のアダプター金型51は、全体として略円筒状を半割りした形状をなす一対の半割り部品52,53から成り、ワイヤハーネス12のグロメット取付け部位14を挟むように一対の半割り部品52,53を組付けてロックすると、各半割り部品52,53の対向面に形成された断面半円状の凹部52a,53aが、前記グロメット取付け部位14の電線束を囲んで止水剤17を充填する為の充填空間54を形成する(図7(b)、参照)。
【0033】
更に、前記充填空間54の上方部には、ワイヤハーネス12のグロメット取付け部位14における電線16間に止水剤17を充填して加熱硬化させることによって形成される止水処理部61(図8(c)、参照)の外径より大きな径を有する拡大空間54aを形成する拡径凹部52b,53bが形成されている。
【0034】
そこで、図7(b)に示したように、ワイヤハーネス12のグロメット取付け部位14を挟むように一対の半割り部品52,53を組付ける。この際、前記グロメット取付け部位14の下方には、電線止め部材60が装着される。該電線止め部材60は、樹脂成型リングや、テープ又は発砲シートから成り、電線束の外周面と凹部52a,53aの内周面との間に隙間を形成することで止水剤17を流れ込み易くしている。
更に、前記拡大空間54a内で電線束をほぐし、各電線16を散けさせる。
【0035】
次に、図7(c)に示すように、前記充填空間54内に止水剤17を注入機のノズル30より注入する。この際、拡大空間54a内で電線束をほぐされた各電線16間には、止水剤17が確実に充填される。
更に、止水剤17の注入が完了した後、図8(a)に示したように前記拡大空間54aに一対のスペーサ55,56を補完的に装填し、図8(b)に示すように該拡大空間54aをスペーサ55,56で充塞する。
【0036】
その後、図示しない加熱用金型25のヒータユニット28によりアダプター金型51を介して充填空間54内の止水剤17を加熱し、硬化させる。
そして、所定時間経過後、前記アダプター金型51からワイヤハーネス12を取り出すと、図8(c)に示したように、該ワイヤハーネス12のグロメット取付け部位14には止水処理部61が形成される。
【0037】
即ち、本実施形態のワイヤハーネスの止水方法によれば、前記止水処理部61が設けられるグロメット取付け部位14の電線束は、予めほぐされてから電線16間に止水剤17が充填されるので、電線16間を確実にシールすることができる。
【0038】
更に、前記拡大空間54aがスペーサ55,56で充塞されることにより、止水剤17は、電線束をほぐす為の前記拡大空間54a内では硬化させられないので、加熱硬化された止水処理部61の形状をコンパクトにでき、グロメット41の電線保持部43に該止水処理部61を圧入固定する際の挿入作業性を低下させることもない。
【0039】
図7及び図8は、本発明の一実施形態に係るワイヤハーネスの止水方法を説明する為の止水処理装置の概略断面図である。尚、加熱用金型25等の上記止水処理装置11と同様の構成部品については、同符号を付して詳細な説明を省略する。
図7(a)に示したように、本実施形態のアダプター金型51は、全体として略円筒状を半割りした形状をなす一対の半割り部品52,53から成り、ワイヤハーネス12のグロメット取付け部位14を挟むように一対の半割り部品52,53を組付けてロックすると、各半割り部品52,53の対向面に形成された断面半円状の凹部52a,53aが、前記グロメット取付け部位14の電線束を囲んで止水剤17を充填する為の充填空間54を形成する(図7(b)、参照)。
【0040】
更に、前記充填空間54の上方部には、ワイヤハーネス12のグロメット取付け部位14における電線16間に止水剤17を充填して加熱硬化させることによって形成される止水処理部61(図8(c)、参照)の外径より大きな径を有する拡大空間54aが形成されている。
【0041】
そこで、図7(b)に示したように、ワイヤハーネス12のグロメット取付け部位14を挟むように一対の半割り部品52,53を組付ける。この際、前記グロメット取付け部位14の下方には、電線止め部材60が装着される。該電線止め部材60は、樹脂成型リングや、テープ又は発砲シートから成り、電線束の外周面と凹部52a,53aの内周面との間に隙間を形成することで止水剤17を流れ込み易くしている。
更に、前記拡大空間54a内で電線束をほぐし、各電線16を散けさせる。
【0042】
次に、図7(c)に示すように、前記充填空間54内に止水剤17を注入機のノズル30より注入する。この際、拡大空間54a内で電線束をほぐされた各電線16間には、止水剤17が確実に充填される。
更に、止水剤17の注入が完了した後、図8(a)に示したように前記拡大空間54aに一対のスペーサ55,56を補完的に装填し、図8(b)に示すように該拡大空間54aをスペーサ55,56で充塞する。
【0043】
その後、図示しない加熱用金型25のヒータユニット28によりアダプター金型51を介して充填空間54内の止水剤17を加熱し、硬化させる。
そして、所定時間経過後、前記アダプター金型51からワイヤハーネス12を取り出すと、図8(c)に示したように、該ワイヤハーネス12のグロメット取付け部位14には止水処理部61が形成される。
【0044】
即ち、本実施形態のワイヤハーネスの止水方法によれば、前記止水処理部61が設けられるグロメット取付け部位14の電線束は、予めほぐされてから電線16間に止水剤17が充填されるので、電線16間を確実にシールすることができる。
【0045】
更に、前記拡大空間54aがスペーサ55,56で充塞されることにより、止水剤17は、電線束をほぐす為の前記拡大空間54a内では硬化させられないので、加熱硬化された止水処理部61の形状をコンパクトにでき、グロメット41の電線保持部43に該止水処理部61を圧入固定する際の挿入作業性を低下させることもない。
【0046】
また、図9(a)に示したように、充填空間54内に止水剤17を注入機のノズル30より注入し、該拡大空間54a内で電線束をほぐされた各電線16間に止水剤17を確実に充填した後、図9(b)に示したようにワイヤハーネス12のグロメット取付け部位14を前記充填空間54の下方に変位させることによって、前記拡大空間54a内の止水剤17を前記充填空間54の下方部に流入させた状態で、充填空間54内の止水剤17を加熱し、硬化させる。
【0047】
そこで、上述した実施形態において用いたスペーサ55,56を用いることなく、電線束をほぐす為の拡大空間54a内で止水剤17が硬化するのを阻止することができる。
そして、所定時間経過後、前記アダプター金型51からワイヤハーネス12を取り出すと、図9(c)に示したように、該ワイヤハーネス12のグロメット取付け部位14には止水処理部61が形成される。
【0048】
尚、本発明のワイヤハーネスの製造方法に係る止水処理装置のアダプター金型及び加熱用金型や、グロメット等の構成は、上記各実施形態の構成に限定されるものではなく、本発明の趣旨に基づいて種々の形態を採りうることは勿論である。
【0049】
【発明の効果】
以上説明したように、本発明のワイヤハーネスの製造方法によれば、ワイヤハーネスのグロメット取付け部位に設けられる止水処理部が、予め成形金型内で電線間に充填した止水剤を加熱硬化させることにより形成されるので、止水剤の硬化時間を短縮することができる。
そこで、ワイヤハーネスの組立工程における待ち時間が短くなり、製造リードタイムを短くできると共に、止水剤が硬化するまでワイヤハーネスを製造ラインにストックする必要がなくなり、止水処理工程の占有スペースを狭めることができ、生産性向上を図ることができる。
【0050】
また、グロメットの電線保持部に圧入固定される前記止水処理部が、該電線保持部の内径以上の外径を備えるように予め止水剤を加熱硬化させることにって形成されるので、グロメットの電線保持部は、該止水処理部に対する締付け力を一定にでき、止水性能が安定する。
従って、効率良く電線束とグロメットとの間の止水処理を行うことができる良好なワイヤハーネスの製造方法及び止水方法を提供できる。
【図面の簡単な説明】
【図1】本発明の一実施形態に係るワイヤハーネスの製造方法に係る止水処理装置の分解斜視図である。
【図2】図1に示した止水処理装置の使用状態を示す斜視図である。
【図3】図1に示した止水処理装置を用いたワイヤハーネスの製造方法を説明する為の断面図である。
【図4】図1に示した止水処理装置を用いたワイヤハーネスの製造方法を説明する為の断面図である。
【図5】図1に示した止水処理装置により形成された止水処理部の斜視図である。
【図6】図5に示した止水処理部にグロメットを取付けた状態を示す部分断面図である。
【図7】本発明の一実施形態に係るワイヤハーネスの止水方法を説明する為の止水処理装置の概略断面図である。
【図8】本発明の一実施形態に係るワイヤハーネスの止水方法を説明する為の止水処理装置の概略断面図である。
【図9】本発明の他の実施形態に係るワイヤハーネスの止水方法を説明する為の止水処理装置の概略断面図である。
【図10】従来のグロメットを示す部分断面図である。
【符号の説明】
11 ワイヤハーネスの止水処理装置
12 ワイヤハーネス
14 グロメット取付け部位
16 電線
21 アダプター金型(成形金型)
22 半割り部品
23 半割り部品
24 充填空間
25 加熱用金型(成形金型)
28 ヒータユニット(加熱手段)
31 止水処理部
32 フランジ部
[0001]
BACKGROUND OF THE INVENTION
If the present invention relates to a waterproofing method and water stop apparatus of the wire harness, in particular, the insertion to hold the wire Jah harness using grommet into the mounting hole formed in the vehicle body panel of an automobile, the electric wire constituting a wire harness The present invention relates to an improvement in a water stopping method for a wire harness in which a water stopping agent is filled and sealed between a bundle and a grommet.
[0002]
[Prior art]
For example, as a grommet for inserting and holding a wire harness in a mounting hole formed in a body panel of an automobile, a grommet or a water stop that fills and seals with a water stop agent between a wire bundle constituting the wire harness and the grommet There are structures (for example, Patent Document 1 and Patent Document 2).
A grommet 1 shown in FIG. 10 includes a funnel-shaped grommet body (expanded diameter portion) 4 at one end of a cylindrical wire holding portion 3 through which a wire bundle 2 of a wire harness is inserted. The grommet body 4 is provided with an inner cylinder portion 5 extending on the inner wall surface in the electric wire insertion direction.
[0003]
Then, the wire bundle 2 is inserted into the grommet 1, and the adhesive tape 6 is unwound from the wire holding part 3, and then a water-stopping agent 7 is poured from the opening 4 a of the grommet main body 4 facing upward. The space between the wire bundle 2 and the gap in the wire bundle are sealed, and the water blocking agent 7 is cured.
[0004]
Therefore, the attaching operation of the grommet 1 to the wire harness and the filling operation of the water-stopper 7 are performed by converging the electric wire group constituting the wire harness in the first process and bundling with an adhesive tape or the like, and in the second process. The wire harness is inserted into the wire holding part 3 and the adhesive tape 6 is wound around and fixed to the tip of the wire holding part 3 and the wire harness so that the grommet 1 is positioned at a predetermined position of the wire harness in the third step. In the fourth step, the water-stopping agent 7 was injected from the nozzle of the injection machine (not shown) into the inner cylinder portion 5 with the opening 4a of the grommet 1 facing upward, and the water-stopping agent 7 injected in the fifth step was cured. Then, the finish inspection of the wire harness is performed in the sixth step.
[0005]
[Patent Document 1]
JP-A-8-116615 (page 3, FIG. 1)
[Patent Document 2]
JP-A-9-112754 (first page, FIG. 6)
[0006]
[Problems to be solved by the invention]
As described above, the injection process (fourth process) of the water blocking agent 7 into the grommet 1 includes the wire harness assembly process (first process to third process) and the wire harness finishing process (sixth process). In order to carry out between, it is necessary to carry out on the line of a wire harness manufacturing process (1st process-6th process), and the injection process of the water-stopping agent 7 was not able to be performed in another line or another place. .
The two-component urethane sealant and anaerobic adhesive used as the water-stopping agent 7 require a curing time of 1 hour or more at the fastest, and the water-stopping agent 7 is filled into the grommet 1. The wire harness has a curing waiting time of 1 hour or more. In addition, since the curing time of the water-stopping agent is affected by the ambient temperature, the curing time changes depending on the season and it is difficult to manage the curing waiting time.
[0007]
Therefore, the conventional method for manufacturing a wire harness has a problem that the waiting time becomes longer than the setup time and processing time in the assembly process of the wire harness, and the manufacturing lead time is increased.
In addition, the wire harness must be stocked on the production line until the water-stopping agent is cured, and there is a problem that a large space is required for the water-stop treatment process.
[0008]
Accordingly, an object of the present invention is to solve the above-described problems, and to provide a good wire harness manufacturing method and water stopping method that can efficiently perform water stopping treatment between a wire bundle and a grommet. is there.
[0012]
[Means for Solving the Problems]
The above-described object of the present invention is to provide a stopper having an outer diameter equal to or larger than the inner diameter of the wire holding portion of the grommet by filling a water-stopping agent between the wires in the grommet mounting portion of the wire harness to which the grommet is mounted and heat curing. A wire harness water stopping method for forming a water treatment section,
Forming an enlarged space larger than the outer diameter of the water-stopping treatment portion in the upper portion of the water-stopping agent filling space formed surrounding the wire bundle at the grommet attachment site, and loosening the wire bundle in the enlarged space; A step of injecting a water-stopping agent into the filling space and filling the water-stopping agent between the wires, a step of filling the expansion space with a supplementary spacer and filling it, and a water-stopping agent in the filling space. This is achieved by a method for water-stopping a wire harness, comprising a step of heat-curing.
[0013]
Further, the above object of the present invention is to provide an outer diameter equal to or larger than the inner diameter of the wire holding portion of the grommet by filling a heat-stopping agent between the wires in the grommet mounting portion of the wire harness to which the grommet is mounted and heat-curing. A water stopping method for a wire harness for forming a water stopping treatment portion,
Forming an enlarged space larger than the outer diameter of the water-stopping treatment portion in the upper portion of the water-stopping agent filling space formed surrounding the wire bundle at the grommet attachment site, and loosening the wire bundle in the enlarged space; Injecting a water-stopping agent into the filling space and filling the water-stopping agent between the wires; and displacing the grommet mounting portion below the filling space to displace the water-stopping agent in the expansion space into the filling space. This is achieved by a method for water-stopping a wire harness, characterized by comprising a step of flowing into the lower portion of the slab and a step of heat-curing the water-stopping agent in the filling space.
[0014]
According to the water stopping method for the wire harness having the above-described configuration, the wire bundle at the grommet mounting portion where the water stopping unit is provided is preliminarily loosened and filled with a water stopping agent between the wires. Can be sealed. Furthermore, since the water-stopping agent is not cured in the expansion space for loosening the electric wire bundle, the shape of the heat-cured water-stopping treatment unit becomes compact.
[0015]
Furthermore, the above object of the present invention is to provide an outer diameter equal to or larger than the inner diameter of the wire holding portion of the grommet by filling a water-stopping agent between the wires in the grommet mounting portion of the wire harness to which the grommet is mounted and heat curing. A water harness water-stop treatment device for forming a water-stop treatment section,
An adapter mold that encloses the wire bundle at the grommet attachment site to form a filling space for the water-stopping agent, and a heating device that includes heating means capable of heating the water-stopping agent via the adapter mold held Has a mold,
Any one of a plurality of types of adapter molds having different diameters of the filling space is detachably held by the heating mold corresponding to the diameter of the wire bundle at the grommet mounting portion. This is achieved by a water-harness treatment device for a wire harness.
[0016]
According to the water shutoff treatment device for a wire harness configured as described above, any one of a plurality of types of adapter dies having different filling space diameters corresponding to the diameters of the wire bundles at the grommet attachment site is selectively heated. By holding it in the mold, it is possible to easily cope with a plurality of types of wire harnesses having different wire bundle sizes.
[0017]
In addition, the water stop treatment part provided in the grommet attachment part of the wire harness is formed by heat-curing the water stop agent previously filled between the wires in the molding die, thus shortening the hardening time of the water stop agent can do.
Therefore, the waiting time in the assembly process of the wire harness is shortened, the manufacturing lead time can be shortened, and it is not necessary to stock the wire harness in the production line until the water-stopping agent is hardened, and the space occupied in the water-stop treatment process is reduced. And productivity can be improved.
[0018]
In addition, since the water stop treatment part press-fitted and fixed to the electric wire holding part of the grommet is formed by heating and hardening the water stop agent in advance so as to have an outer diameter equal to or larger than the inner diameter of the electric wire holding part, The electric wire holding part can make the tightening force to the water stop treatment part constant, and the water stop performance is stabilized.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a wire harness manufacturing method and a water stopping method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an exploded perspective view of a water stop treatment apparatus according to a method for manufacturing a wire harness according to an embodiment of the present invention.
[0020]
As shown in FIG. 1, the water-stop treatment device 11 for a wire harness according to this embodiment includes a water-stop agent (two-component reaction curable) between the electric wires 16 in the grommet attachment site 14 of the wire harness 12 to which the grommet 41 is attached. Filling and heat-curing 17 (urethane, epoxy, silicon, etc.) 17 forms a water stop treatment part 31 having an outer diameter equal to or larger than the inner diameter of the wire holding part 43 of the grommet 41 (FIG. 6, Reference) and a molding die composed of an adapter die 21 and a heating die 25.
[0021]
The adapter mold 21 is composed of a pair of halved parts 22 and 23 having a substantially cylindrical shape as a whole, and a pair of halved parts 22 and 23 so as to sandwich the grommet mounting portion 14 of the wire harness 12. Is assembled and locked, semicircular recesses 22a and 23a formed on the opposing surfaces of the half-split parts 22 and 23 surround the wire bundle of the grommet mounting portion 14 and are filled with the water-stopping agent 17. The filling space 24 is formed (see FIG. 3).
A plurality of types of adapter dies 21 having different diameters of the filling space 24 are prepared corresponding to various wire harnesses 12 having different diameters of the wire bundles of the grommet mounting portion 14.
[0022]
The heating mold 25 includes a mounting recess 26 that detachably holds the adapter mold 21 and a heater unit 28 that is a heating means. The heater mold 28 is held via the held adapter mold 21. Thus, the water stopping agent 17 in the filling space 24 can be heated.
A fitting groove 27 is formed in the inner wall surface of the mounting recess 26, and the fitting protrusions 22b and 23b projecting from the outer wall surface of the adapter mold 21 are inserted and guided, as shown in FIG. The adapter mold 21 is fitted and fixed as described above.
[0023]
Next, the manufacturing method of the wire harness which fills and seals the water stop agent 17 between the electric wire bundle which comprises the wire harness 12, and the grommet 41 using the said water stop processing apparatus 11 is demonstrated.
First, the adapter mold 21 corresponding to the diameter of the wire bundle in the grommet mounting portion 14 of the wire harness 12 is selected, and the pair of halved parts 22 and 23 are assembled so as to sandwich the grommet mounting portion 14. Under the present circumstances, the clamping part 24a formed in the lower end of each said recessed part 22a, 23a clamps and fixes the electric wire bundle of the grommet attachment site | part 14. FIG.
[0024]
Next, as shown in FIG. 2, the adapter mold 21 is fitted and fixed while the fitting protrusions 22 b and 23 b are inserted and guided in the fitting groove 27 of the heating mold 25. As a result, as shown in FIG. 3, a substantially cylindrical filling space 24 is formed to surround the wire bundle of the grommet mounting portion 14 and to fill the water-stopping agent 17.
[0025]
Next, as shown in FIG. 4, the water-stopping agent 17 is injected into the filling space 24 from the nozzle 30 of the injector. Since the upper portion of the filling space 24 has an outwardly expanding conical surface, injection by the nozzle 30 is easy.
Further, after the injection of the water-stopping agent 17 is completed, the water-stopping agent 17 in the filling space 24 is heated (60 to 80 ° C.) through the adapter die 21 by the heater unit 28 of the heating die 25 and cured. Let The heating mold 25 is preferably warmed in advance.
[0026]
When the wire harness 12 is taken out from the heating mold 25 and the adapter mold 21 after a predetermined time (about 10 minutes), as shown in FIG. 5, the grommet mounting portion 14 of the wire harness 12 has The water stop processing part 31 is formed.
Here, since the water stop treatment part 31 is formed to have an outer diameter equal to or larger than the inner diameter of the wire holding part 43 of the grommet 41, as shown in FIG. When this is done, the tightening force of the wire holding portion 43 against the water stop treatment portion 31 can be made constant, and the water stop performance of the wire harness 12 inserted and held in the grommet 41 in a water stop state is stabilized. Further, the tip of the electric wire holding portion 43 is wound around and fixed to the wire harness 46 by an adhesive tape 46.
[0027]
That is, according to the manufacturing method of the wire harness of the present embodiment, the water stop treatment portion 31 provided in the grommet mounting portion 14 of the wire harness 12 is filled in advance between the electric wires 16 in the filling space 24 of the adapter mold 21. Since the water-stopping agent 17 is formed by heat-curing, the hardening time of the water-stopping agent 17 can be greatly shortened as compared with the conventional case where the water-stopping agent 17 is cured at room temperature.
[0028]
Therefore, the waiting time in the assembly process of the wire harness 12 is shortened, the manufacturing lead time can be shortened, and it is not necessary to stock the wire harness 17 in the production line until the water-stopping agent 17 is cured, and the water-stopping process is occupied. Space can be narrowed and productivity can be improved.
For example, the water stop treatment device 11 is set on each of four turntables, and the die set of the harness, the injection of a water stop agent, heat curing, and the mold release are repeated according to the tact time of the wire harness assembly process. By performing the water treatment, the wire harness can be manufactured very efficiently.
[0029]
Further, according to the water stop treatment device 11, any one of a plurality of types of adapter dies 21 having different diameters of the filling space 24 corresponding to the diameter of the wire bundle of the grommet mounting portion 14 is selectively used. By holding the heating mold 25, it is possible to easily cope with a plurality of types of wire harnesses 12 having different wire bundle sizes.
[0030]
Furthermore, a flange portion 32 that protrudes outward in the radial direction is provided at the end portion of the water stop treatment portion 31 on the side of the enlarged grommet diameter portion (upper side in FIG. 6).
Therefore, when the water stop treatment part 31 is press-fitted into the electric wire holding part 43 of the grommet 41, the flange part 32 comes into contact with the inner wall of the grommet enlarged diameter part as a stopper, so that positioning becomes easy.
[0031]
Further, since the flange portion 32 has a larger outer diameter than the main body of the water stop treatment portion 31, the wire bundle sealed in the flange portion 32 is sealed in the main body of the water stop treatment portion 31. Compared with the bundle of electric wires, the water-stopping agent 17 can easily enter between the wires when the water-stopping agent 17 is filled, and the certainty of the water-stopping between the wires is further improved.
[0032]
FIG.7 and FIG.8 is a schematic sectional drawing of the water stop processing apparatus for demonstrating the water stop method of the wire harness which concerns on one Embodiment of this invention. In addition, about the component similar to the said water stop processing apparatus 11, such as the metal mold | die 25 for heating, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
As shown in FIG. 7A, the adapter mold 51 of the present embodiment is composed of a pair of halved parts 52 and 53 that are formed by halving a substantially cylindrical shape as a whole, and attaching the grommet for the wire harness 12 When the pair of halved parts 52, 53 are assembled and locked so as to sandwich the part 14, the recesses 52a, 53a having a semicircular cross section formed on the opposing surfaces of the halved parts 52, 53 become the grommet mounting part. A filling space 54 for surrounding the 14 electric wire bundles and filling the water-stopping agent 17 is formed (see FIG. 7B).
[0033]
Further, in the upper part of the filling space 54, a water-stopping treatment part 61 (FIG. 8 (FIG. 8 (A))) is formed by filling the water-stopping agent 17 between the electric wires 16 in the grommet mounting portion 14 of the wire harness 12 and heat-curing it. The diameter-enlarged recesses 52b and 53b that form an enlarged space 54a having a larger diameter than the outer diameter of c) and reference) are formed.
[0034]
Therefore, as shown in FIG. 7B, the pair of halved parts 52 and 53 are assembled so as to sandwich the grommet mounting portion 14 of the wire harness 12. At this time, the wire stopper member 60 is mounted below the grommet mounting portion 14. The wire stopper 60 is made of a resin-molded ring, a tape, or a foamed sheet, and the water-stopping agent 17 can easily flow by forming a gap between the outer peripheral surface of the wire bundle and the inner peripheral surfaces of the recesses 52a and 53a. is doing.
Further, the electric wire bundle is loosened in the enlarged space 54a, and the electric wires 16 are scattered.
[0035]
Next, as shown in FIG. 7C, the water-stopping agent 17 is injected into the filling space 54 from the nozzle 30 of the injection machine. At this time, the water-stopping agent 17 is surely filled between the electric wires 16 that have been loosened in the enlarged space 54a.
Further, after the injection of the water-stopping agent 17 is completed, a pair of spacers 55 and 56 are complementarily loaded in the enlarged space 54a as shown in FIG. 8 (a), and as shown in FIG. 8 (b). The enlarged space 54 a is filled with spacers 55 and 56.
[0036]
Thereafter, the water-stopping agent 17 in the filling space 54 is heated through the adapter mold 51 by the heater unit 28 of the heating mold 25 (not shown) to be cured.
Then, when the wire harness 12 is taken out from the adapter mold 51 after a predetermined time has elapsed, as shown in FIG. 8C, a water stop treatment portion 61 is formed at the grommet mounting portion 14 of the wire harness 12. The
[0037]
That is, according to the water stopping method for the wire harness of the present embodiment, the wire bundle of the grommet mounting portion 14 provided with the water stopping treatment portion 61 is loosened in advance and the water stopping agent 17 is filled between the wires 16. Therefore, the space between the electric wires 16 can be reliably sealed.
[0038]
Furthermore, since the expansion space 54a is filled with the spacers 55 and 56, the water-stopping agent 17 cannot be cured in the expansion space 54a for loosening the electric wire bundle. The shape of 61 can be made compact, and insertion workability when the water stop treatment part 61 is press-fitted and fixed to the electric wire holding part 43 of the grommet 41 is not lowered.
[0039]
FIG.7 and FIG.8 is a schematic sectional drawing of the water stop processing apparatus for demonstrating the water stop method of the wire harness which concerns on one Embodiment of this invention. In addition, about the component similar to the said water stop processing apparatus 11, such as the metal mold | die 25 for heating, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
As shown in FIG. 7A, the adapter mold 51 of the present embodiment is composed of a pair of halved parts 52 and 53 that are formed by halving a substantially cylindrical shape as a whole, and attaching the grommet for the wire harness 12 When the pair of halved parts 52, 53 are assembled and locked so as to sandwich the part 14, the recesses 52a, 53a having a semicircular cross section formed on the opposing surfaces of the halved parts 52, 53 become the grommet mounting part. A filling space 54 for surrounding the 14 electric wire bundles and filling the water-stopping agent 17 is formed (see FIG. 7B).
[0040]
Further, in the upper part of the filling space 54, a water-stopping treatment part 61 (FIG. 8 (FIG. 8 (A))) is formed by filling the water-stopping agent 17 between the electric wires 16 in the grommet mounting portion 14 of the wire harness 12 and heat-curing it. An enlarged space 54a having a larger diameter than the outer diameter of c) and reference) is formed.
[0041]
Therefore, as shown in FIG. 7B, the pair of halved parts 52 and 53 are assembled so as to sandwich the grommet mounting portion 14 of the wire harness 12. At this time, the wire stopper member 60 is mounted below the grommet mounting portion 14. The wire stopper member 60 is made of a resin-molded ring, a tape, or a foamed sheet, and easily forms the water-stopping agent 17 by forming a gap between the outer peripheral surface of the wire bundle and the inner peripheral surfaces of the recesses 52a and 53a. is doing.
Further, the electric wire bundle is loosened in the enlarged space 54a, and the electric wires 16 are scattered.
[0042]
Next, as shown in FIG. 7C, the water-stopping agent 17 is injected into the filling space 54 from the nozzle 30 of the injection machine. At this time, the water-stopping agent 17 is surely filled between the electric wires 16 that have been loosened in the enlarged space 54a.
Further, after the injection of the water-stopping agent 17 is completed, a pair of spacers 55 and 56 are complementarily loaded in the enlarged space 54a as shown in FIG. 8 (a), and as shown in FIG. 8 (b). The enlarged space 54 a is filled with spacers 55 and 56.
[0043]
Thereafter, the water-stopping agent 17 in the filling space 54 is heated through the adapter mold 51 by the heater unit 28 of the heating mold 25 (not shown) to be cured.
Then, when the wire harness 12 is taken out from the adapter mold 51 after a predetermined time has elapsed, as shown in FIG. 8C, a water stop treatment portion 61 is formed at the grommet mounting portion 14 of the wire harness 12. The
[0044]
That is, according to the water stopping method for the wire harness of the present embodiment, the wire bundle of the grommet mounting portion 14 provided with the water stopping treatment portion 61 is loosened in advance and the water stopping agent 17 is filled between the wires 16. Therefore, the space between the electric wires 16 can be reliably sealed.
[0045]
Furthermore, since the expansion space 54a is filled with the spacers 55 and 56, the water-stopping agent 17 cannot be cured in the expansion space 54a for loosening the electric wire bundle. The shape of 61 can be made compact, and insertion workability when the water stop treatment part 61 is press-fitted and fixed to the electric wire holding part 43 of the grommet 41 is not lowered.
[0046]
Further, as shown in FIG. 9A, the water-stopping agent 17 is injected into the filling space 54 from the nozzle 30 of the injection machine, and the wire bundle 16 is loosened in the enlarged space 54a. After the liquid medicine 17 is reliably filled, the water-stopping agent in the expansion space 54a is displaced by displacing the grommet mounting portion 14 of the wire harness 12 below the filling space 54 as shown in FIG. 9B. In a state where 17 is allowed to flow into the lower portion of the filling space 54, the water-stopping agent 17 in the filling space 54 is heated and cured.
[0047]
Therefore, it is possible to prevent the water stop agent 17 from being cured in the enlarged space 54a for loosening the wire bundle without using the spacers 55 and 56 used in the above-described embodiment.
Then, when the wire harness 12 is taken out from the adapter mold 51 after a predetermined time has elapsed, as shown in FIG. 9C, a water stop treatment portion 61 is formed in the grommet mounting portion 14 of the wire harness 12. The
[0048]
Note that the configurations of the adapter mold and heating mold, the grommet, etc. of the water stop treatment apparatus according to the method of manufacturing the wire harness of the present invention are not limited to the configurations of the above embodiments, Of course, various forms can be adopted based on the purpose.
[0049]
【The invention's effect】
As described above, according to the method for manufacturing a wire harness of the present invention, the water stop treatment part provided at the grommet mounting portion of the wire harness heat-hardens the water stop agent previously filled between the wires in the molding die. Therefore, the curing time of the waterstop agent can be shortened.
Therefore, the waiting time in the assembly process of the wire harness is shortened, the manufacturing lead time can be shortened, and it is not necessary to stock the wire harness in the production line until the water-stopping agent is cured, thereby reducing the occupied space in the water-stopping process. And productivity can be improved.
[0050]
Moreover, since the water stop treatment part press-fitted and fixed to the electric wire holding part of the grommet is formed by heat-curing a water stop agent in advance so as to have an outer diameter equal to or larger than the inner diameter of the electric wire holding part, The wire holding part of the grommet can make the tightening force to the water stop treatment part constant, and the water stop performance is stabilized.
Therefore, it is possible to provide a good wire harness manufacturing method and water stopping method that can efficiently perform the water stopping treatment between the wire bundle and the grommet.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a water stop treatment apparatus according to a method for manufacturing a wire harness according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a usage state of the water stop treatment device shown in FIG. 1;
3 is a cross-sectional view for explaining a method of manufacturing a wire harness using the water stop treatment apparatus shown in FIG. 1. FIG.
FIG. 4 is a cross-sectional view for explaining a method of manufacturing a wire harness using the water stop treatment apparatus shown in FIG.
FIG. 5 is a perspective view of a water stop treatment unit formed by the water stop treatment apparatus shown in FIG. 1;
6 is a partial cross-sectional view showing a state where a grommet is attached to the water stop treatment section shown in FIG.
FIG. 7 is a schematic cross-sectional view of a water stop treatment device for explaining a wire harness water stop method according to an embodiment of the present invention.
FIG. 8 is a schematic cross-sectional view of a water stop treatment apparatus for explaining a wire harness water stop method according to an embodiment of the present invention.
FIG. 9 is a schematic cross-sectional view of a water stop treatment device for explaining a water shutoff method for a wire harness according to another embodiment of the present invention.
FIG. 10 is a partial cross-sectional view showing a conventional grommet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Wire harness water stop processing apparatus 12 Wire harness 14 Grommet attachment part 16 Electric wire 21 Adapter die (molding die)
22 Half-parts 23 Half-parts 24 Filling space 25 Heating mold (molding mold)
28 Heater unit (heating means)
31 Water stop treatment part 32 Flange part

Claims (3)

グロメットが取り付けられるワイヤハーネスのグロメット取付け部位における電線間に止水剤を充填して加熱硬化させることにより、前記グロメットの電線保持部の内径以上の外径を備えた止水処理部を形成する為のワイヤハーネスの止水方法であって、
前記グロメット取付け部位の電線束を囲んで形成される前記止水剤の充填空間上方部に前記止水処理部の外径より大きな拡大空間を形成して該拡大空間内で電線束をほぐす工程と、前記充填空間に止水剤を注入して電線間に止水剤を充填する工程と、前記拡大空間にスペーサを補完的に装填して充塞する工程と、前記充填空間内の止水剤を加熱硬化する工程とを備えたことを特徴とするワイヤハーネスの止水方法。
In order to form a water stop treatment part having an outer diameter equal to or greater than the inner diameter of the wire holding part of the grommet by filling a heat stop agent between the wires in the grommet attachment part of the wire harness to which the grommet is attached and heat curing. The water harness stopping method of the wire harness,
Forming an enlarged space larger than the outer diameter of the water-stopping treatment portion in the upper portion of the water-stopping agent filling space formed surrounding the wire bundle at the grommet attachment site, and loosening the wire bundle in the enlarged space; A step of injecting a water-stopping agent into the filling space and filling the water-stopping agent between the wires, a step of filling the expansion space with a supplementary spacer and filling it, and a water-stopping agent in the filling space. A method for water-stopping a wire harness comprising a step of heat-curing.
グロメットが取り付けられるワイヤハーネスのグロメット取付け部位における電線間に止水剤を充填して加熱硬化させることにより、前記グロメットの電線保持部の内径以上の外径を備えた止水処理部を形成する為のワイヤハーネスの止水方法であって、
前記グロメット取付け部位の電線束を囲んで形成される前記止水剤の充填空間上方部に前記止水処理部の外径より大きな拡大空間を形成して該拡大空間内で電線束をほぐす工程と、前記充填空間に止水剤を注入して電線間に止水剤を充填する工程と、前記グロメット取付け部位を前記充填空間の下方に変位させて前記拡大空間内の止水剤を前記充填空間の下方部に流入させる工程と、前記充填空間内の止水剤を加熱硬化する工程とを備えたことを特徴とするワイヤハーネスの止水方法。
In order to form a water stop treatment part having an outer diameter equal to or greater than the inner diameter of the wire holding part of the grommet by filling a heat stop agent between the wires in the grommet attachment part of the wire harness to which the grommet is attached and heat curing. The water harness stopping method of the wire harness,
Forming an enlarged space larger than the outer diameter of the water-stopping treatment portion in the upper portion of the water-stopping agent filling space formed surrounding the wire bundle at the grommet attachment site, and loosening the wire bundle in the enlarged space; Injecting a water-stopping agent into the filling space and filling the water-stopping agent between the wires; and displacing the grommet mounting portion below the filling space to displace the water-stopping agent in the expansion space into the filling space. A method for water-stopping a wire harness, comprising: a step of allowing the water-stopper in the filling space to flow;
グロメットが取り付けられるワイヤハーネスのグロメット取付け部位における電線間に止水剤を充填して加熱硬化させることにより、前記グロメットの電線保持部の内径以上の外径を備えた止水処理部を形成する為のワイヤハーネスの止水処理装置であって、
前記グロメット取付け部位の電線束を囲んで前記止水剤の充填空間を形成するアダプター金型と、抱持した前記アダプター金型を介して前記止水剤を加熱可能な加熱手段を備えた加熱用金型とを有しており、
前記充填空間の径が異なる複数種のアダプター金型のうちの何れか一つが、前記グロメット取付け部位の電線束の径に対応して前記加熱用金型に着脱自在に抱持されることを特徴とするワイヤハーネスの止水処理装置。
In order to form a water stop treatment part having an outer diameter equal to or greater than the inner diameter of the wire holding part of the grommet by filling a heat stop agent between the wires in the grommet attachment part of the wire harness to which the grommet is attached and heat curing. A water harness treatment device for a wire harness,
An adapter mold that encloses the wire bundle at the grommet attachment site to form a filling space for the water-stopping agent, and a heating device that includes heating means capable of heating the water-stopping agent via the adapter mold held Has a mold,
Any one of a plurality of types of adapter molds having different diameters of the filling space is detachably held by the heating mold corresponding to the diameter of the wire bundle at the grommet mounting portion. Water harness treatment equipment for wire harness.
JP2002311287A 2002-10-25 2002-10-25 Water shutoff method and water shutoff treatment device for wire harness Expired - Fee Related JP4043914B2 (en)

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