JP2004362858A

JP2004362858A - Manufacturing tool for shielded wire, and manufacturing method for shielded wire

Info

Publication number: JP2004362858A
Application number: JP2003157751A
Authority: JP
Inventors: Akira Baba; 晃馬場; Kimio Tsuchiya; 貴美雄土屋
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2003-06-03
Filing date: 2003-06-03
Publication date: 2004-12-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing tool for a shielded wire and a manufacturing method for a shielded wire capable of easily manufacturing the shielded wire. <P>SOLUTION: A wire insertion hole 9 for inserting a wire 7 is formed in a first tool plate 3; a sheet body insertion hole 10 having a linear shape in a plan view for inserting a sheet body 8 is formed in the vicinity of the insertion hole 9; a wire insertion hole 11 for inserting the wire 7 is formed in a second tool plate 4; a nearly U-shaped sheet body insertion hole 12 for inserting the sheet body 8 is formed so as to surround the insertion hole 11; and through-holes 13 and 14 each having a nearly circular shape in a plan view for inserting the wire 7 and for inserting the sheet body 8 so as to wrap the wire 7 to cover the wire 7 with the sheet body 8 are formed in third tool plates 5 and 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、ノイズ対策のためのシールド層を有するシールド電線の製造治具及びシールド電線の製造方法に関する。
【０００２】
【従来の技術】
複数本の電線（絶縁線心とドレイン線）をまとめた外周に金属テープで構成されるシールド層を有し、該シールド層の上にシースを有するシールド電線が知られている。かかるシールド電線の製造方法としては、前記複数本の電線をまとめた外周に金属テープを巻き付けた後、この金属テープの上にシースを押し出し被覆する方法が知られている。
【０００３】
しかしながら、かかる製造方法では、製造工程が長くなるという問題がある。そこで、かかる問題を解決したシールド電線の製造方法及びシールド電線として、シースの押し出し工程をなくすことにより製造工程の短縮化を図ったものが知られている（例えば、特許文献１及び特許文献２参照）。
【０００４】
特許文献１には、次のようなシールド電線の製造方法が開示されている。すなわち、先ず、所要の長さを有する複数本の電線の下面に、金属テープと外装テープとの重ね合わせ体を縦添えした状態のものを成形雌型の上に配置する。次に、前記複数本の電線を雄型で押すことにより前記金属テープ及び前記外装テープと共に前記電線を前記成形雌型の溝に押し込んで前記電線を前記金属テープ及び前記外装テープとの重ね合わせ体で包む。そして、このような状態で前記重ね合わせ体の向かい合わせ縁部を前記成形雌型の前記溝の入り口側においてプレス体で挟持して接合させる。以上のような製造方法によれば、シースの押し出し工程がなくなり、製造工程の短縮化が図られている。
【０００５】
また、特許文献２には、複数本の電線と、一面が絶縁性を有し他面が導電性粘着材を有するテープとを備え、該テープを前記複数本の電線をまとめた外周に絶縁性を有する面を外側にして重ね巻きしたシールド電線が開示されている。このようなシールド電線によれば、一面側が絶縁性を有しシースの役割を果たすことができるとともに他面側が導電性粘着材でシールド機能も果たすことができる前記テープを重ね巻きすることにより、シースの押し出し工程がなくなり、製造工程の短縮化が図られている。
【０００６】
【特許文献１】
特開平１１−３９９６９号公報（第３−５頁、第１図−第４図）
【０００７】
【特許文献２】
特開平７−７８５２０号公報（第２頁、第１図）
【０００８】
【発明が解決しようとする課題】
しかしながら、上記特許文献１に記載のシールド電線の製造方法にあっては、電線の長さが限定され、長いシールド電線を製造することができない。また、上記特許文献２に記載のシールド電線にあっては、前記テープが重ね巻きされていることからテープ間の隙間から電磁波が放射され、シールド効果が落ちてしまうおそれがある。
【０００９】
本発明の目的は、これらの問題を生じることなく容易にシールド電線を製造することができるシールド電線の製造治具及びシールド電線の製造方法を提供することにある。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の発明は、電線とシールド効果を有するシート体とを並走させるための導入部分と、前記シート体を前記電線の周りに縦添えにより次第に巻き付けるとともに、該電線を前記シート体で被覆するための被覆部分と、を有することを特徴とする。
【００１１】
このような請求項１に記載の本発明によれば、前記導入部分において前記電線と該電線に被覆するための前記シート体とが並走状態となった後、前記被覆部分において前記電線が前記シート体によって被覆されてシールド電線が形成される。これにより、容易にしかも低コストでシールド電線を製造することができる。しかも、電線の長さが限定されてしまうこともなく、長いシールド電線を製造することができるとともに、前記電線の周りに縦添えにより巻き付けられた前記シート体により、十分なシールド効果を得ることができる。
【００１２】
請求項２に記載の発明は、前記シート体は、金属シートと樹脂シートとを接合してなることを特徴とする。
【００１３】
このような請求項２に記載の本発明によれば、シールド電線の形成にあたり、前記シート体によって前記電線が被覆されてシールド層とシースとを同時に形成することができる。
【００１４】
請求項３に記載の発明は、第１治具板と第２治具板と第３治具板とを、始端側から終端側に向かってこの順で所定の間隔を空けて互いの板面が向かい合うようにして一直線上に並んだ状態で備え、前記第１治具板は、前記導入部分を構成し、前記第２治具板及び前記第３治具板は、前記被覆部分を構成し、前記第１治具板には、電線を挿通するための電線挿通孔を設けるとともに、該電線挿通孔の近傍に、前記シート体を挿通するためのシート体挿通孔を設け、該シート体挿通孔を、前記シート体の幅と同じ或いはそれ以上の長さを有する平面視直線形状に形成し、前記第２治具板には、前記電線を挿通するための電線挿通孔を設けるとともに、前記シート体を挿通するための略Ｕ字状又は略Ｏ字状のシート体挿通孔を前記電線挿通孔を囲むようにして設け、前記第３治具板には、前記電線を挿通するとともに該電線を包むようにして前記シート体を挿通し、該シート体を前記電線に被覆するための平面視略円形状の貫通孔を設けたことを特徴とする。
【００１５】
このような請求項３に記載の本発明によれば、前記第１治具板の前記電線挿通孔と前記シート体挿通孔とにそれぞれ前記電線と前記シート体とを挿通することにより、これら電線とシート体とが並走状態となる。そして、前記第２治具板の前記電線挿通孔に電線を挿通するとともに前記略Ｕ字状又は略Ｏ字状のシート体挿通孔に前記シート体を挿通することにより、該シート体は、前記電線の周りに巻き付けやすいように略Ｕ字状又は略Ｏ字状となる。そして、前記第３治具板の前記貫通孔に、前記電線を挿通するとともに該電線を包むようにして前記シート体を挿通することにより、該シート体が前記電線の周りに縦添えにより巻き付けられ該電線が前記シート体によって被覆されて、シールド電線が形成される。これにより、容易にしかも低コストでシールド電線を製造することができる。
【００１６】
請求項４に記載の発明は、前記第３治具板を複数設け、該複数の第３治具板の前記各貫通孔の径を、終端側に行くに従って小さくし、少なくとも最終端における貫通孔の径を前記電線に前記シート体を圧着させることができる大きさとしたことを特徴とする。
【００１７】
このような請求項４に記載の本発明によれば、前記電線の周りに巻き付けられた前記シート体が、前記各第３治具板の貫通孔を通過するに従い、徐々に前記電線に密着し、少なくとも最終端における貫通孔において電線に圧着される。これにより、前記シート体を前記電線に皺のない状態で密着させて被覆することができる。
【００１８】
請求項５に記載の発明は、前記第１治具板及び前記第３治具板を、互いに接離可能な第１部材と第２部材とに分割して構成し、前記第１部材と前記第２部材との境界部分に前記電線挿通孔或いは前記貫通孔を位置させ、前記第２治具板に、端面から前記電線挿通孔に通じ該電線挿通孔に前記電線を入れるためのスリットを設けたことを特徴とする。
【００１９】
このような請求項５に記載の本発明によれば、前記第１治具板の前記電線挿通孔と前記第３治具板の前記貫通孔に電線を入れる際には、前記第１部材と前記第２部材とを分離することにより、前記電線挿通孔及び前記貫通孔を開放状態にしてこれら電線挿通孔及び貫通孔に電線を入れることができる。また、前記第２治具板の前記電線挿通孔には、前記スリットから前記電線を入れることができる。これにより、前記電線挿通孔及び前記貫通孔に電線を入れ易く、特に前記電線が一端にコネクタを有する場合であっても、かかる電線を前記電線挿通孔及び前記貫通孔に入れることができる。
【００２０】
請求項６に記載の発明は、軸方向に形成されたスリットを有し中空部に前記電線を挿通可能なスリーブを、前記第２治具板の前記電線挿通孔に回転可能に嵌合したことを特徴とする。
【００２１】
このような請求項６に記載の本発明によれば、前記第２治具板の前記電線挿通孔に電線を入れる際には、先ず前記電線挿通孔に嵌合した前記スリーブのスリットが前記第２治具板に設けられたスリットと一致するようにした後、該第２治具板のスリットから電線を入れ、該電線を前記スリーブの中空部に入れる。その後、スリーブを回転して該スリーブのスリットを前記第２治具板のスリットの位置からずらす。これにより、前記電線挿通孔内の前記電線（前記スリーブの中空部内の前記電線）が、前記第２治具板のスリットに抜け出てしまうことを防止することができる。
【００２２】
請求項７に記載の発明は、前記第２治具板に設けた前記スリットに嵌合して該スリットを全長に渡って塞ぐリブを有する電線抜け止め部材を備えたことを特徴とする。
【００２３】
このような請求項７に記載の本発明によれば、前記スリットから前記電線挿通孔に電線を入れた後、前記抜け止め部材のリブを前記スリットに嵌合して該スリットを塞ぐことにより、前記電線挿通孔内の電線がスリットに抜け出てしまうことを防止することができる。
【００２４】
請求項８に記載の発明は、電線とシールド効果を有するシート体とを並走させるための前工程と、前記シート体を前記電線の周りに縦添えにより次第に巻き付けるとともに、該電線を前記シート体で被覆するための後工程と、を有することを特徴とする。
【００２５】
このような請求項８に記載の本発明によれば、容易にしかも低コストでシールド電線を製造することができる。しかも、電線の長さが限定されてしまうこともなく、長いシールド電線を製造することができるとともに、前記電線の周りに縦添えにより巻き付けられた前記シート体により、十分なシールド効果を得ることができる。
【００２６】
請求項９に記載の発明は、前記シート体は、金属シートと樹脂シートとを接合してなり、該樹脂シート側を外側にして前記電線に巻き付けて被覆することを特徴とする。
【００２７】
このような請求項９に記載の本発明によれば、シールド電線の形成にあたり、前記シート体によって前記電線が被覆されてシールド層とシースとを同時に形成することができる。
【００２８】
請求項１０に記載の発明は、前記前工程は、第１治具板に設けられた電線挿通孔に前記電線を挿通するとともに、前記第１治具板の前記電線挿通孔の近傍に設けられ前記シート体の幅と同じ或いはそれ以上の長さを有する平面視直線形状のシート体挿通孔に前記シート体を挿通するものであり、前記後工程は、前記第１治具板と一直線上に設けられるとともに該第１治具板と互いの板面が向き合うようにして設けられた第２治具板に設けられた電線挿通孔に前記電線を挿通するとともに、前記電線挿通孔を囲むようにして前記第２治具板に設けられた略Ｕ字状又は略Ｏ字状のシート体挿通孔に前記シート体を挿通する被覆準備工程と、前記第１治具板及び前記第２治具板と一直線上に設けられるとともに前記第２治具板と互いの板面が向き合うようにして設けられた第３治具板に設けられた平面視略円形状の貫通孔に、前記電線を挿通するとともに該電線を包むようにして前記シート体を挿通し、該シート体を前記貫通孔において前記電線に被覆する被覆工程と、からなることを特徴とする。
【００２９】
このような請求項１０に記載の本発明によれば、前記第１治具板の前記電線挿通孔と前記シート体挿通孔とにそれぞれ前記電線と前記シート体とを挿通することにより、これら電線とシート体とが並走状態となる。そして、前記第２治具板の略Ｕ字状又は略Ｏ字状のシート体挿通孔に前記シート体を挿通することにより、該シート体は、前記第２治具板の前記電線挿通孔に挿通した前記電線の周りに巻き付けやすいように略Ｕ字状又は略Ｏ字状となる。そして、前記第３治具板の前記貫通孔に、前記電線を挿通するとともに該電線を包むようにして前記シート体を挿通することにより、該シート体が前記電線の周りに縦添えにより巻き付けられ該電線がシート体によって被覆されて、シールド電線が形成される。これにより、容易にしかも低コストでシールド電線を製造することができる。
【００３０】
請求項１１に記載の発明は、前記第３治具板は複数設けられ、前記被覆工程は、複数の前記第３治具板の前記貫通孔に前記電線を挿通するとともに該電線を包むようにして前記シート体を挿通し、次第に前記貫通孔の径が小さくなって前記電線に前記シート体を圧着するものであることを特徴とする。
【００３１】
このような請求項１１に記載の本発明によれば、前記電線の周りに巻き付いた前記シート体が、前記各第３治具板の貫通孔を通過するに従い、徐々に前記電線に密着し、少なくとも最終端における貫通孔において電線に圧着される。これにより、前記シート体を前記電線に皺のない状態で密着させて被覆することができる。
【００３２】
請求項１２に記載の発明は、前記第１治具板及び前記第３治具板は、互いに接離可能な第１部材と第２部材とに分割して構成され、前記第１部材と前記第２部材との境界部分に前記電線挿通孔或いは前記貫通孔が位置し、前記第２治具板には、端面から前記電線挿通孔に通じ該電線挿通孔に前記電線を入れるためのスリットが設けられ、前記第１治具板の電線挿通孔と前記第３治具板の貫通孔には、前記第１部材と前記第２部材とを分離して前記第１治具板の電線挿通孔と前記第３治具板の貫通孔を開放状態にして前記電線を入れ、前記第２治具板の前記電線挿通孔には、前記スリットから前記電線を入れることを特徴とする。
【００３３】
このような請求項１２に記載の本発明によれば、前記電線挿通孔及び前記貫通孔に電線を入れ易く、特に前記電線が一端にコネクタを有する場合であっても、かかる電線を前記電線挿通孔及び前記貫通孔に入れることができる。
【００３４】
請求項１３に記載の発明は、軸方向に形成されたスリットを有し中空部に前記電線を挿通可能なスリーブが、前記第２治具板の前記電線挿通孔に回転可能に嵌合され、前記スリーブのスリットと前記第２治具板のスリットとを一致させた状態で前記電線を前記スリーブの前記中空部内に入れた後、該スリーブを回転して該スリーブの前記スリットと前記第２治具板のスリットとを不一致状態にすることを特徴とする。
【００３５】
このような請求項１３に記載の本発明によれば、前記電線挿通孔内の前記電線（前記スリーブの中空部内の前記電線）が、前記第２治具板のスリットに抜け出てしまうことを防止することができる。
【００３６】
請求項１４に記載の発明は、前記第２治具板の前記スリットから前記電線挿通孔に前記電線を入れた後、前記第２治具板の前記スリットに嵌合して該スリットを全長に渡って塞ぐリブを有する電線抜け止め部材の前記リブを前記スリットに嵌合することを特徴とする。
【００３７】
このような請求項１４に記載の本発明によれば、前記電線挿通孔に挿通した前記電線が前記第２治具板のスリットに抜け出てしまうことを防止することができる。
【００３８】
【発明の実施の形態】
以下、図面を参照して本発明に係るシールド電線の製造治具及びシールド電線の製造方法の実施の形態を説明する。
図１は本発明に係るシールド電線の製造治具の実施の形態の第１例を示す斜視図、図２は図１に示すシールド電線の製造治具によるシールド電線の製造工程を示す斜視図である。
【００３９】
図において、符号１は本例のシールド電線の製造治具を示しており、このシールド電線の製造治具１は、基板２上に設けられた第１治具板３と、第２治具板４と、２枚の第３治具板５，６とを、この順で備えている。なお、第１治具板３側を始端側、第３治具板５，６側を終端側と定義する。
【００４０】
前記第１治具板３と前記第２治具板４と前記第３治具板５，６は、所定の間隔を空けて互いの板面が向かい合うようにして前記基板２上に設けられている。また、これら第１治具板３、前記第２治具板４及び前記第３治具板５，６は、一直線上に並んだ状態となっている。
【００４１】
前記第１治具板３は、電線７とシート体８（図２参照）とを並走させるための導入部分を構成している。なお、電線７は本例では複数本となっている。また、前記第２治具板４と第３治具板５，６は、シート体８を電線７の周りに縦添えにより次第に巻き付けるとともに、電線７をシート体８で被覆するための被覆部分を構成している。
【００４２】
前記第１治具板３の略中央部分には、電線７を挿通するための平面視略円形状の電線挿通孔９が設けられている。また、第１治具板３の電線挿通孔９の下側近傍には、シート体８を挿通するためのシート体挿通孔１０が設けられている。このシート体挿通孔１０は、シート体８の幅と同じ或いはそれ以上の長さを有する平面視直線形状に形成されている。
【００４３】
前記第２治具板４の略中央部分には、電線７を挿通するための平面視略円形状の電線挿通孔１１が設けられている。また、第２治具板４には、シート体８を挿通するための略Ｕ字状のシート体挿通孔１２が前記電線挿通孔１１を囲むようにして設けられている。このシート体挿通孔１２は、下側にその曲線部分がくるようにして設けられている。また、シート体挿通孔１２は、外側輪郭１２ａの両端部が内側に向かうような形状となっていて、かかるシート体挿通孔１２に挿通されたシート体８の幅方向の両端部が内側に向き、シート体８が電線７に巻き付けられやすくなるようになっている。
【００４４】
前記第３治具板５，６の略中央部分には、平面視略円形状の貫通孔１３，１４がそれぞれ設けられている。この貫通孔１３，１４は、電線７を挿通するとともに、この電線７を包むようにしてシート体８を挿通し、かかるシート体８を電線７に被覆するためのものである。
【００４５】
かかる貫通孔１３，１４について詳しく述べると、貫通孔１３の径よりも、貫通孔１４の径の方が小さくなっている。そして、貫通孔１４の径は、該貫通孔１４に電線７を包むようにして挿通されたシート体８を電線７に圧着させることができる大きさとなっている。
【００４６】
前記第１治具板３の電線挿通孔９、前記第２治具板４の電線挿通孔１１、前記第３治具５，６の貫通孔１３，１４は、一直線上に並んでおり、電線７を直線状に挿通することができるようになっている。
【００４７】
以上のようなシールド電線の製造治具１を用いたシールド電線の製造方法の一例について、以下説明する。
本例のシールド電線の製造方法は、電線７とシート体８とを並走させるための前工程１５と、シート体８を電線７の周りに縦添えにより次第に巻き付けるとともに、電線７をシート体８で被覆するための後工程１６とからなっている。
【００４８】
ここで、電線７とシート体８について詳述する。
前記電線７は、例えばワイヤーハーネスであり、本例では前述のように複数本となっている。そして、かかる複数本の電線７の中にはドレイン線が含まれていてもよい。なお、電線７は１本であってもよい。
【００４９】
前記シート体８は、金属シートと樹脂シートとを接合してなっている。より具体的には、シート体８は、厚さ１０μｍのＡｌ（アルミニウム）箔で構成される金属シートと厚さ７０μｍのシート状に形成されたＰＶＣ（ポリ塩化ビニル）で構成される樹脂シートとを、厚さ１２μｍのシート状に形成されたＰＥＴ（ポリエチレンテレフタレート）を介して接合してなっている。そして、前記金属シート側の表面には、両面テープが貼り付けられている。かかるシート体８を電線７を被覆したとき、前記金属シートはシールド層の機能を果たし、前記樹脂シートはシースの機能を果たす。
なお、シート体８は、シールド効果を有していればこのような構成のものに限定されるものではない。
【００５０】
次に、前記前工程１５と前記後工程１６について詳しく述べる。
前工程１５は、前記導入部分を構成する第１治具板３において実施される。具体的には、前記第１治具板３に設けられた前記電線挿通孔９に前記電線７を挿通するとともに、第１治具板３に設けられた前記シート体挿通孔１０に、両面テープが貼り付けられている金属シート側を上にした状態で前記シート体８を挿通する。これにより、電線７とシート体８とが並走状態となる。
【００５１】
前記後工程１６は、前記被覆部分を構成する第２治具板４と第３治具板５，６において実施され、第２治具板４において実施される被覆準備工程１７と第３治具板５，６において実施される被覆工程１８とからなっている。
【００５２】
前記被覆準備工程１７においては、前記第２治具板４の電線挿通孔１１に前記電線７を挿通するとともに、前記第２治具板のシート体挿通孔１２に前記シート体８を挿通する。このとき、シート体８は、略Ｕ字状に曲げられ、またその幅方向の両端部がシート体挿通孔１２の両端部付近の外側輪郭１２ａによってガイドされて内側に向き、電線７に巻き付けられやすいような形状となる。
【００５３】
前記被覆工程１８においては、前記第３治具板５，６の貫通孔１３，１４に、前記電線７を挿通するとともに、前記シート体８を両面テープが貼り付けられた金属シート側を内側にして前記電線７を包むようにして挿通する。これにより、シート体８は、電線７の周りに縦添えにより巻き付けられて該電線７がシート体８によって被覆される。より具体的には、シート体８は、第３治具板５の貫通孔１３とこれよりも径の小さい第３治具板６の貫通孔１４を通過することにより、重なり合うようにして電線７の周りに巻き付けられるとともに、次第に複数本の電線７の外周に密着し、第３治具板６の貫通孔１４において電線７に圧着される（シート体８は、電線７に接着されるとともに、重なり合った部分が接着される）。これにより、複数本の電線７をまとめた外周に、シート体８が、金属シートを内側にし樹脂シートを外側にした状態で、縦添えによって被覆されたシールド電線１９が形成される。かかるシールド電線１９は、シート体８の金属シートがシールド層を構成し、シート体８の樹脂シートがシースを構成している。
【００５４】
なお、上記各製造工程は、シールド電線１９を図２中の矢印の方向に引っ張ることにより、電線７及びシート体８が第１治具板３、第２治具板４及び第３治具板５，６をこの順で通過することにより実施される。
【００５５】
以上のような本例のシールド電線の製造治具１及びシールド電線の製造方法によれば、容易にしかも低コストでシールド電線を製造することができる。しかも、電線の長さが限定されてしまうこともなく、長いシールド電線を製造することができるとともに、前記電線の周りに縦添えにより巻き付けられた前記シート体により、十分なシールド効果を得ることができる。
【００５６】
また、金属シートと樹脂シートとを接合してなるシート体８を電線７に被覆することにより、シールド層とシースとを同時に形成することができる。
【００５７】
また、第３治具板５，６の貫通孔１３，１４は、この順で径が小さくなっているので、シート体８を電線７に皺のない状態で密着させて被覆することができる。
【００５８】
なお、第２治具板４の略Ｕ字状のシート体挿通孔１２は、外側輪郭１２ａだけではなく、内側輪郭１２ｂも内側に向かうような形状となっていてもよい（不図示）。
【００５９】
また、シート体挿通孔１２は、図３に示すように、外側輪郭１２ａ，内側輪郭１２ｂが内側に向かう形状に形成するとともに、右端部１２ｃよりも左端部１２ｄの方が高くなるような形状に形成してもよい（逆に左端部１２ｄよりも右端部１２ｃの方を高くしてもよい）。これにより、シート体挿通孔１２に挿通されたシート体８は、その幅方向の両端部の高さが異なるようにして略Ｕ字状に曲げられるので、シート体８が重なり合う部分を有するようにして電線７に巻き付けやすい。
なお、シート体挿通孔１２は、略Ｕ字状ではなく略Ｏ字状となっていてもよい。
【００６０】
次に、本発明に係るシールド電線の製造治具及びシールド電線の製造方法の実施の形態の第２例について説明する。
図４は本例のシールド電線の製造治具を示す斜視図、図５は図４に示すシールド電線の製造治具に電線をセットする時の斜視図、図６は図４に示すシールド電線の製造治具によるシールド電線の製造工程を示す斜視図、図７及び図８は、図４に示すシールド電線の製造治具を構成する第２治具板の一部拡大図である。なお、上記実施の形態の第１例と同様の要素には同一の符号を付して示し、その説明を省略する。
【００６１】
図において、符号３０は本例のシールド電線の製造治具を示しており、このシールド電線の製造治具３０は、基板２上に設けられた第１治具板３１と、第２治具板３２と、２枚の第３治具板３３，３４とを、この順で備えている。なお、第１治具板３１側を始端側、第３治具板３３，３４側を終端側と定義する。
【００６２】
前記第１治具板３１と前記第２治具板３２と前記第３治具板３３，３４は、上記実施の形態の第１例と同様、所定の間隔を空けて互いの板面が向かい合うようにして前記基板２上に設けられている。また、これら第１治具板３１、前記第２治具板３２及び前記第３治具板３３，３４は、一直線上に並んだ状態となっている。
【００６３】
また、上記実施の形態の第１例と同様、前記第１治具板３１は、電線７とシート体８とを並走させるための導入部分を構成しており、前記第２治具板３２と第３治具板３３，３４は、シート体８を電線７の周りに縦添えにより次第に巻き付けるとともに、電線７をシート体８で被覆するための被覆部分を構成している。
【００６４】
第１治具板３１と第３治具板３３，３４は、互いに接離可能な第１部材３５と第２部材３６とに分割されて構成されている。そして、第１治具板３１の電線挿通孔９と第３治具板３３，３４の貫通孔１３，１４は、第１部材３５と第２部材３６の境界部分に位置している。
【００６５】
第１部材３５と第２部材３６はヒンジ３７を介して連結されている。第１部材３５と第２部材３６のヒンジ３７の反対側には、図示しない係止手段が設けられている。そして、第１部材３５と第２部材３６は、かかる係止手段により閉じた状態に保持することができるとともに、係止を解除してヒンジ３７を中心にして回転して開くことができるようになっている。
【００６６】
前記第２治具板３２には、電線挿通孔１１に電線７を入れるためのスリット３８が設けられている。このスリット３８は、第２治具板３２の上端面から電線挿通孔１１に通じるようにして設けられている。そして、スリット３８は、シート体挿通孔１２と連通しないように設けられている。
【００６７】
第２治具板３２の電線挿通孔１１には、スリーブ３９が回転可能に嵌合されている。このスリーブ３９は、その長さが第２治具板３２の板厚よりも長くなっている。そして、スリーブ３９は、軸方向にスリット４０を有するとともに、中空部に電線７を挿通することができるようになっている。
【００６８】
以上のようなシールド電線の製造治具３０を用いてシールド電線を製造するにあたり、シールド電線の製造治具３０への電線７のセットを以下のようにして行う。なお、本例では、電線７は、一端側にコネクタ４１を有している。
【００６９】
すなわち、図５に示すように、第１治具板３１及び第３治具板３３，３４の第１部材３５と第２部材３６とを開いて分離し、電線挿通孔９と貫通孔１３，１４を開放状態にする。また、第２治具板３２の電線挿通孔１１に嵌合されているスリーブ３９のスリット４０と第２治具板３２のスリット３８とを一致させた状態にする（図５，図７参照）。そして、シールド電線の製造治具３０の上方から、電線７を、電線挿通孔９と貫通孔１３，１４に入れるとともに、第２治具板３２のスリット３８を通ってスリーブ３９の中空部内に入れる。
【００７０】
そして、第１治具板３１及び第３治具板３３，３４の第１部材３５と第２部材３６とを閉じて係止手段によって係止させ合う。また、スリーブ３９の中空部内の電線７が第２部材３２のスリット３８に抜け出ないよう、スリーブ３９を、図７に示す状態から図８に示すように１８０度回転して該スリーブ３９のスリット４０と第２治具板３２のスリット３８とを不一致の状態にする（なお、図８においては、電線７は図示省略されている）。これにより、シールド電線の製造治具３０への電線７のセットが完了する。
【００７１】
このようにしてシールド電線の製造治具３０に電線７がセットされた後、図６に示すように、上記実施の形態の第１例と同様の前記各工程を実施してシールド電線１９が形成される。
【００７２】
以上のような本例のシールド電線の製造治具３０及びシールド電線の製造方法によれば、上記実施の形態の第１例と同様の効果を得ることができるとともに、電線７がコネクタ４１を有していても、かかる電線７を、第１治具板３１の電線挿通孔９、第２治具板３２の電線挿通孔１１、第３治具板３３，３４の貫通孔１３，１４に入れることが可能である。
【００７３】
また、第２治具板３２の電線挿通孔１１に嵌合したスリーブ３９のスリット４０を、第２治具板３２のスリット３８と不一致の状態にすることにより、スリーブ３９の中空部内の電線７が、第２治具板３２のスリット３８に抜け出てしまうことを防止することができる。
【００７４】
なお、上記実施の形態の第２例において、第２治具板３２の電線挿通孔１１内の電線７がスリット３８に抜け出るのを防止するための部材として、スリーブ３９の代わりに、図９及び図１０に示す電線抜け止め部材４２を、スリット３８に嵌合してもよい。
【００７５】
この電線抜け止め部材４２は、正面視略Ｔ字形状に形成されていて、第２治具板３２の厚さとほぼ同じ板厚を有している。そして、電線抜け止め部材４２は、基部４３から立設され、該基部４３と一体に形成されたリブ４４を有している。このリブ４４は、第２治具板３２のスリット３８に嵌合して該スリット３８を全長に渡って塞ぐようになっている。
【００７６】
このような電線抜け止め部材４２を備える場合におけるシールド電線の製造治具３０への電線７のセットにあたっては、第２治具板３２のスリット３８から電線挿通孔１１に電線７を入れた後、電線抜け止め部材４２のリブ４４をスリット３８に嵌合して該スリット３８を塞ぐ。これにより、電線挿通孔１１内の電線７がスリット３８に抜け出てしまうことを防止することができる。
【００７７】
なお、第２治具板３２のシート体挿通孔１２は、図示するもの以外に、上記実施の形態の第１例と同様にして変形してもよい。
【００７８】
本発明に係るシールド電線の製造治具は、電線７とシート体８とを並走させるための導入部分と、シート体８を電線７の周りに縦添えにより次第に巻き付けるとともに、電線７をシート体８で被覆するための被覆部分を有していればよく、上記実施の形態の第１例、第２例に示すものに限られるものではない。また、本発明に係るシールド電線の製造方法も、電線７とシート体８とを並走させるための前工程と、シート体８を電線７の周りに縦添えにより次第に巻き付けるとともに、電線７をシート体８で被覆するための後工程とを有していればよく、上記実施の形態の第１例、第２例に示すものに限られるものではない。
【００７９】
例えば、符号５，６或いは３３，３４で示している２枚の第３治具板は、符号６或いは３４で示す第３治具板１枚だけであってもよい。
【００８０】
さらに、第３治具板を１枚だけとし、第３治具板の板厚を図示したものよりも厚くし、貫通孔を終端側に行くに従って徐々に径が小さくなる円錐台形状に形成してもよい。このような構成の第３治具板の貫通孔に挿通されたシート体８は、徐々に電線７に密着し、皺のない状態で電線に被覆することができる。
【００８１】
また、第３治具板を２枚よりも多くし、かかる第３治具板に設けられる貫通孔の径を終端側に行くに従って小さくしてもよい。これにより、電線７の周りに巻き付けられたシート体８が、これら第３治具板の貫通孔を通過するに従って徐々に電線７に密着することから、シート体８を皺のない状態で電線７に被覆することができる。
【００８２】
また、第１治具板３（第１治具板３１）と第２治具板４（第２治具板３２）の間に、図示しないが、略中央部に電線７を挿通するための平面視略円形状の電線挿通孔が設けられるとともに、この電線挿通孔の下側に、第２治具板４（第２治具板３２）の略Ｕ字状のシート体挿通孔１２よりもＲが大きく形成された平面視円弧状のシート体挿通孔が設けられた板体（第１治具板３（第１治具板３１）、第２治具板４（第２治具板３２）及び第３治具板５，６（第３治具板３３，３４）と同一の形状・大きさ）を設けてもよい。これにより、シート体８を徐々に略Ｕ字状にすることができる。
【００８３】
さらに、図示しないが、第１治具板３（第１治具板３１）のシート体挿通孔１０の形状を平面視直線形状ではなく、ややＲをつけた形状（第２治具板４（第２治具板３２）のシート体挿通孔１２よりも大きなＲ）にしてもよい。
【００８４】
なお、電線７へのシート体８の圧着は次のようにして行ってもよい。すなわち、シート体８の金属シート側の表面には、両面テープを貼り付けるのではなく、ホットメルト材を薄く塗布する。また、前記第３治具板６（第３治具板３４）の貫通孔１４の周囲に加熱手段を設ける。そして、電線７とシート体８の貫通孔１４の通過時に、加熱手段でシート体８を加熱して熱融着により電線７にシート体８を圧着させてもよい。
【００８５】
【発明の効果】
以上説明したように請求項１，８に記載の発明によれば、容易にしかも低コストでシールド電線を製造することができ、また、電線の長さが限定されてしまうこともなく、長いシールド電線を製造することができるとともに、前記電線の周りに縦添えにより巻き付けられた前記シート体により、十分なシールド効果を得ることができる。
【００８６】
請求項２，９に記載の発明によれば、シールド電線の形成にあたり、前記シート体によって前記電線が被覆されてシールド層とシースとを同時に形成することができる。
【００８７】
請求項３，１０に記載の発明によれば、第１治具板によって電線とシート体とが並走状態となり、第２治具板と第３治具板によってシート体が電線の周りに縦添えにより次第に巻き付けられ該電線がシート体によって被覆されてシールド電線が形成され、容易にしかも低コストでシールド電線を製造することができる。
【００８８】
請求項４，１１に記載の発明によれば、電線の周りに巻き付けられたシート体が、複数の第３治具板の貫通孔を通過するに従い、徐々に電線に密着し、少なくとも最終端における貫通孔において電線に圧着され、シート体を前記電線に皺のない状態で密着させて被覆することができる。
【００８９】
請求項５，１２に記載の発明によれば、第１治具板、第２治具板の電線挿通孔及び第３治具板の貫通孔に電線を入れ易く、特に電線が一端にコネクタを有する場合であっても、かかる電線を前記電線挿通孔及び前記貫通孔に入れることができる。
【００９０】
請求項６，１３に記載の発明によれば、第２治具板の電線挿通孔に嵌合したスリーブにより、電線挿通孔内の電線が、第２治具板のスリットに抜け出てしまうことを防止することができる。
【００９１】
請求項７，１４に記載の発明によれば、抜け止め部材のリブを第２治具板のスリットに嵌合して該スリットを塞ぐことにより、電線挿通孔内の電線がスリットに抜け出てしまうことを防止することができる。
【図面の簡単な説明】
【図１】本発明に係るシールド電線の製造治具の実施の形態の第１例を示す斜視図。
【図２】図１に示すシールド電線の製造治具によるシールド電線の製造工程を示す斜視図。
【図３】図１に示すシールド電線の製造治具を構成する第２治具板に設けられたシート体挿通孔の変形例を示す一部拡大図。
【図４】本発明に係るシールド電線の製造治具の実施の形態の第２例を示す斜視図。
【図５】図４に示すシールド電線の製造治具に電線をセットする時の斜視図。
【図６】図４に示すシールド電線の製造治具によるシールド電線の製造工程を示す斜視図。
【図７】図４に示すシールド電線の製造治具を構成する第２治具板の一部拡大図。
【図８】図４に示すシールド電線の製造治具を構成する第２治具板の一部拡大図。
【図９】電線抜け止め部材を備えた第２治具板を示す正面図。
【図１０】図９に示す状態から第２治具板のスリットに電線抜け止め部材のリブを嵌合した状態を示す正面図。
【符号の説明】
１，３０シールド電線の製造治具
３，３１第１治具板
４，３２第２治具板
５，６，３３，３４第３治具板
７電線
８シート体
９，１１電線挿通孔
１０，１２シート体挿通孔
１３，１４貫通孔
１５前工程
１６後工程
１７被覆準備工程
１８被覆工程
３５第１部材
３６第２部材
３８スリット
３９スリーブ
４０スリット
４２電線抜け止め部材
４４リブ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a jig for manufacturing a shielded electric wire having a shield layer for noise suppression and a method for manufacturing a shielded electric wire.
[0002]
[Prior art]
2. Description of the Related Art Shielded wires having a shield layer made of a metal tape on the outer periphery where a plurality of wires (insulated wire core and drain wire) are put together and having a sheath on the shield layer are known. As a method for manufacturing such a shielded electric wire, a method is known in which a metal tape is wound around an outer periphery where the plurality of electric wires are put together, and a sheath is extruded and covered on the metal tape.
[0003]
However, such a manufacturing method has a problem that the manufacturing process becomes long. Therefore, as a method of manufacturing a shielded wire and a shielded wire that solves such a problem, there has been known a shielded wire in which the manufacturing process is shortened by eliminating a step of extruding a sheath (for example, see Patent Documents 1 and 2). ).
[0004]
Patent Literature 1 discloses the following method for manufacturing a shielded electric wire. That is, first, a wire in which a superposed body of a metal tape and an exterior tape is vertically attached to a lower surface of a plurality of electric wires having a required length is arranged on a molding die. Next, by pressing the plurality of electric wires with a male mold, the electric wires are pushed into the grooves of the molded female mold together with the metal tape and the exterior tape, and the electric wires are overlapped with the metal tape and the exterior tape. Wrap in. Then, in such a state, the facing edges of the overlapped body are sandwiched and joined by a press body at the entrance side of the groove of the molded female die. According to the manufacturing method as described above, the step of pushing out the sheath is eliminated, and the manufacturing process is shortened.
[0005]
Further, Patent Document 2 includes a plurality of electric wires and a tape having one surface having an insulating property and the other surface having a conductive adhesive material. A shielded electric wire is disclosed in which the surface of the shielded electric wire is wrapped with the surface having the outside. According to such a shielded electric wire, one side has an insulating property and can play a role of a sheath, and the other side has a conductive adhesive material and can also perform a shielding function. And the manufacturing process is shortened.
[0006]
[Patent Document 1]
JP-A-11-39969 (pages 3 to 5, FIGS. 1 to 4)
[0007]
[Patent Document 2]
JP-A-7-78520 (page 2, FIG. 1)
[0008]
[Problems to be solved by the invention]
However, in the method of manufacturing a shielded electric wire described in Patent Document 1, the length of the electric wire is limited, and a long shielded electric wire cannot be manufactured. Further, in the shielded electric wire described in Patent Document 2, since the tape is overlapped and wound, an electromagnetic wave is radiated from a gap between the tapes, and the shielding effect may be reduced.
[0009]
An object of the present invention is to provide a shielded wire manufacturing jig and a method of manufacturing a shielded wire that can easily manufacture a shielded wire without causing these problems.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 has an introduction portion for parallel running an electric wire and a sheet member having a shielding effect, and gradually winding the sheet member around the electric wire by longitudinal attachment. And a covering portion for covering the electric wire with the sheet body.
[0011]
According to the present invention as described in claim 1, after the electric wire and the sheet body for covering the electric wire are in a parallel running state in the introduction portion, the electric wire is in the covered portion. The shielded electric wire is formed by being covered with the sheet body. Thus, the shielded electric wire can be manufactured easily and at low cost. Moreover, it is possible to manufacture a long shielded wire without limiting the length of the wire, and to obtain a sufficient shielding effect by the sheet body wrapped around the wire by longitudinal attachment. it can.
[0012]
The invention according to claim 2 is characterized in that the sheet body is formed by joining a metal sheet and a resin sheet.
[0013]
According to the second aspect of the present invention, in forming the shielded electric wire, the electric wire is covered with the sheet body, and the shield layer and the sheath can be simultaneously formed.
[0014]
According to a third aspect of the present invention, the first jig plate, the second jig plate, and the third jig plate are separated from each other by a predetermined distance in this order from the start end to the end. The first jig plate constitutes the introduction part, and the second jig plate and the third jig plate constitute the covering part. The first jig plate is provided with an electric wire insertion hole for inserting an electric wire, and near the electric wire insertion hole, a sheet material insertion hole for inserting the sheet member is provided. The hole is formed in a linear shape in plan view having a length equal to or greater than the width of the sheet body, and the second jig plate is provided with an electric wire insertion hole for inserting the electric wire, A substantially U-shaped or substantially O-shaped sheet body insertion hole for inserting the sheet body surrounds the electric wire insertion hole. The third jig plate is inserted into the third jig plate so as to penetrate the sheet body so as to wrap the electric wire and cover the electric wire, and a substantially circular penetration in plan view for covering the sheet body with the electric wire. It is characterized by having holes.
[0015]
According to the third aspect of the present invention, the electric wires and the sheet body are inserted into the electric wire insertion holes and the sheet body insertion holes of the first jig plate, respectively. And the seat body run in parallel. Then, by inserting an electric wire through the electric wire insertion hole of the second jig plate and inserting the sheet into the substantially U-shaped or substantially O-shaped sheet insertion hole, the sheet is It becomes substantially U-shaped or substantially O-shaped so as to be easily wound around the electric wire. Then, the sheet is inserted into the through hole of the third jig plate so as to wrap the electric wire and wrap the electric wire. Is covered with the sheet member to form a shielded electric wire. Thus, the shielded electric wire can be manufactured easily and at low cost.
[0016]
The invention according to claim 4, wherein a plurality of the third jig plates are provided, and the diameter of each of the through holes of the plurality of third jig plates is reduced toward the end side, and at least the through hole at the final end is provided. The diameter of the sheet is set to a size that allows the sheet body to be crimped to the electric wire.
[0017]
According to the present invention as described in claim 4, the sheet body wound around the electric wire gradually comes into close contact with the electric wire as it passes through the through holes of the third jig plates. , At least in the through hole at the final end. Thereby, the sheet body can be covered and adhered to the electric wire without wrinkles.
[0018]
The invention according to claim 5 is configured such that the first jig plate and the third jig plate are divided into a first member and a second member that can be separated from each other, and the first member and the third member are separated from each other. The electric wire insertion hole or the through hole is located at a boundary portion with the second member, and a slit is formed in the second jig plate so that the electric wire is inserted into the electric wire insertion hole from an end face thereof. It is characterized by having.
[0019]
According to the present invention as described in claim 5, when inserting an electric wire into the electric wire insertion hole of the first jig plate and the through hole of the third jig plate, the first member and By separating the second member from the second member, the electric wire insertion hole and the through hole can be opened so that an electric wire can be inserted into the electric wire insertion hole and the through hole. Further, the electric wire can be inserted from the slit into the electric wire insertion hole of the second jig plate. Thereby, it is easy to insert an electric wire into the electric wire insertion hole and the through hole, and particularly, even when the electric wire has a connector at one end, such an electric wire can be inserted into the electric wire insertion hole and the through hole.
[0020]
The invention according to claim 6 is that the sleeve having a slit formed in the axial direction and through which the electric wire can be inserted into the hollow portion is rotatably fitted to the electric wire insertion hole of the second jig plate. It is characterized by.
[0021]
According to the present invention as described in claim 6, when inserting an electric wire into the electric wire insertion hole of the second jig plate, first, the slit of the sleeve fitted into the electric wire insertion hole is the second slit. After making the slits coincide with the slits provided on the second jig plate, an electric wire is inserted through the slit of the second jig plate, and the electric wire is inserted into the hollow portion of the sleeve. Thereafter, the sleeve is rotated to shift the slit of the sleeve from the position of the slit of the second jig plate. Thereby, it is possible to prevent the electric wire in the electric wire insertion hole (the electric wire in the hollow portion of the sleeve) from coming out of the slit of the second jig plate.
[0022]
The invention according to claim 7 is characterized in that an electric wire retaining member having a rib which fits into the slit provided in the second jig plate and closes the slit over its entire length is provided.
[0023]
According to the present invention as described in claim 7, by inserting an electric wire from the slit into the electric wire insertion hole, by fitting the rib of the retaining member to the slit and closing the slit, It is possible to prevent the electric wire in the electric wire insertion hole from coming out of the slit.
[0024]
The invention according to claim 8 is a pre-process for causing the electric wire and the sheet member having a shielding effect to run in parallel, and gradually winding the sheet member around the electric wire by vertically attaching the electric wire to the sheet member. And a post-process for coating with.
[0025]
According to the present invention as described in claim 8, a shielded electric wire can be easily manufactured at low cost. Moreover, it is possible to manufacture a long shielded wire without limiting the length of the wire, and to obtain a sufficient shielding effect by the sheet body wrapped around the wire by longitudinal attachment. it can.
[0026]
The invention according to a ninth aspect is characterized in that the sheet body is formed by joining a metal sheet and a resin sheet, and is wound around the electric wire with the resin sheet side outside to cover.
[0027]
According to the present invention as described in claim 9, when forming the shielded electric wire, the electric wire is covered with the sheet body, and the shield layer and the sheath can be simultaneously formed.
[0028]
According to a tenth aspect of the present invention, in the pre-process, the electric wire is inserted into an electric wire insertion hole provided in the first jig plate, and the electric wire is provided near the electric wire insertion hole of the first jig plate. The sheet body is inserted through a sheet body insertion hole having a length equal to or greater than the width of the sheet body and having a linear shape in plan view, and the post-process is performed in a straight line with the first jig plate. The first jig plate is provided and the electric wire is inserted into an electric wire insertion hole provided in a second jig plate provided so that the plate surfaces thereof face each other, and the electric wire is inserted so as to surround the electric wire insertion hole. A coating preparation step of inserting the sheet body into a substantially U-shaped or substantially O-shaped sheet body insertion hole provided in the second jig plate, and directly connecting the first jig plate and the second jig plate; And the second jig plate faces each other The electric wire is inserted through the through-hole provided in the third jig plate provided as described above and having a substantially circular shape in plan view, and the sheet is inserted so as to wrap the electric wire, and the sheet is inserted into the through-hole. And a covering step of covering the electric wire.
[0029]
According to the tenth aspect of the present invention, by inserting the electric wire and the sheet body through the electric wire insertion hole and the sheet body insertion hole of the first jig plate, respectively, And the seat body run in parallel. Then, by inserting the sheet body into the substantially U-shaped or substantially O-shaped sheet body insertion hole of the second jig plate, the sheet body is inserted into the electric wire insertion hole of the second jig plate. It becomes substantially U-shaped or substantially O-shaped so as to be easily wound around the inserted electric wire. Then, the sheet is inserted into the through hole of the third jig plate so as to wrap the electric wire and wrap the electric wire, so that the sheet is wound around the electric wire by longitudinal attachment and the electric wire is wound. Is covered with a sheet member to form a shielded electric wire. Thus, the shielded electric wire can be manufactured easily and at low cost.
[0030]
The invention according to claim 11, wherein a plurality of the third jig plates are provided, and the covering step is such that the electric wires are inserted through the through holes of the plurality of the third jig plates and wrap the electric wires. The sheet body is inserted, and the diameter of the through hole gradually decreases, and the sheet body is crimped to the electric wire.
[0031]
According to the present invention as described in claim 11, as the sheet body wound around the electric wire passes through the through hole of each of the third jig plates, gradually comes into close contact with the electric wire, It is crimped to the electric wire at least in the through hole at the final end. Thereby, the sheet body can be covered and adhered to the electric wire without wrinkles.
[0032]
According to a twelfth aspect of the present invention, the first jig plate and the third jig plate are divided into a first member and a second member that can be separated from each other, and the first member and the third member are separated from each other. The wire insertion hole or the through hole is located at a boundary portion with the second member, and the second jig plate has a slit for leading the wire into the wire insertion hole from an end face and inserting the wire into the wire insertion hole. An electric wire insertion hole of the first jig plate is provided in an electric wire insertion hole of the first jig plate and a through hole of the third jig plate by separating the first member and the second member. And the electric wire is inserted with the through hole of the third jig plate opened, and the electric wire is inserted through the slit into the electric wire insertion hole of the second jig plate.
[0033]
According to the present invention as set forth in claim 12, it is easy to insert an electric wire into the electric wire insertion hole and the through hole. Even when the electric wire has a connector at one end, the electric wire is inserted through the electric wire insertion hole. Holes and said through-holes.
[0034]
The invention according to claim 13 is characterized in that a sleeve having a slit formed in the axial direction and through which the electric wire can be inserted into a hollow portion is rotatably fitted into the electric wire insertion hole of the second jig plate, After the electric wire is inserted into the hollow portion of the sleeve with the slit of the sleeve and the slit of the second jig plate aligned with each other, the sleeve is rotated and the slit of the sleeve and the second jig are rotated. It is characterized in that the slits of the component plate are brought into a mismatched state.
[0035]
According to the present invention as described in claim 13, it is possible to prevent the electric wire in the electric wire insertion hole (the electric wire in the hollow portion of the sleeve) from coming out of the slit of the second jig plate. can do.
[0036]
The invention according to claim 14 is that, after inserting the electric wire from the slit of the second jig plate into the electric wire insertion hole, the slit is fitted to the slit of the second jig plate to extend the entire length. The rib of the electric wire retaining member having a rib that blocks over is fitted to the slit.
[0037]
According to this aspect of the invention, it is possible to prevent the electric wire inserted into the electric wire insertion hole from coming out of the slit of the second jig plate.
[0038]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a shielded wire manufacturing jig and a shielded wire manufacturing method according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a first embodiment of a shielded wire manufacturing jig according to the present invention, and FIG. 2 is a perspective view showing a shielded wire manufacturing process using the shielded wire manufacturing jig shown in FIG. is there.
[0039]
In the drawing, reference numeral 1 denotes a jig for manufacturing a shielded electric wire of the present example. The jig 1 for manufacturing a shielded electric wire includes a first jig plate 3 provided on a substrate 2 and a second jig plate. 4 and two third jig plates 5, 6 in this order. The first jig plate 3 side is defined as a start end side, and the third jig plates 5 and 6 side are defined as a end side.
[0040]
The first jig plate 3, the second jig plate 4, and the third jig plates 5, 6 are provided on the substrate 2 at predetermined intervals so that their plate faces face each other. I have. The first jig plate 3, the second jig plate 4, and the third jig plates 5, 6 are in a state of being aligned on a straight line.
[0041]
The first jig plate 3 constitutes an introduction portion for running the electric wire 7 and the sheet member 8 (see FIG. 2) in parallel. In this example, the electric wire 7 is plural. Further, the second jig plate 4 and the third jig plates 5 and 6 gradually wind the sheet body 8 around the electric wire 7 by longitudinal attachment, and form a covering portion for covering the electric wire 7 with the sheet body 8. Make up.
[0042]
At a substantially central portion of the first jig plate 3, a substantially circular wire insertion hole 9 for inserting the wire 7 is provided. In the vicinity of the lower side of the electric wire insertion hole 9 of the first jig plate 3, a sheet body insertion hole 10 for inserting the sheet body 8 is provided. The sheet body insertion hole 10 is formed in a linear shape in plan view having a length equal to or greater than the width of the sheet body 8.
[0043]
At a substantially central portion of the second jig plate 4, a substantially circular electric wire insertion hole 11 for inserting the electric wire 7 is provided. The second jig plate 4 is provided with a substantially U-shaped sheet body insertion hole 12 for inserting the sheet body 8 so as to surround the electric wire insertion hole 11. The sheet body insertion hole 12 is provided such that the curved portion comes to the lower side. Further, the sheet body insertion hole 12 is shaped such that both ends of the outer contour 12a face inward, and both ends in the width direction of the sheet body 8 inserted in the sheet body insertion hole 12 face inward. The sheet body 8 is easily wound around the electric wire 7.
[0044]
Substantially central portions of the third jig plates 5 and 6 are provided with through holes 13 and 14 each having a substantially circular shape in plan view. The through holes 13 and 14 are for inserting the electric wire 7, inserting the sheet 8 so as to wrap the electric wire 7, and covering the electric wire 7 with the sheet 8.
[0045]
To describe the through holes 13 and 14 in detail, the diameter of the through hole 14 is smaller than the diameter of the through hole 13. The diameter of the through hole 14 is such that the sheet body 8 inserted so as to wrap the electric wire 7 in the through hole 14 can be crimped to the electric wire 7.
[0046]
The electric wire insertion hole 9 of the first jig plate 3, the electric wire insertion hole 11 of the second jig plate 4, and the through holes 13 and 14 of the third jigs 5 and 6 are arranged in a straight line. 7 can be inserted in a straight line.
[0047]
An example of a method for manufacturing a shielded wire using the above-described shielded wire manufacturing jig 1 will be described below.
The manufacturing method of the shielded electric wire of the present example includes a pre-process 15 for running the electric wire 7 and the sheet body 8 in parallel, and gradually winding the sheet body 8 around the electric wire 7 by vertically attaching the electric wire 7 to the sheet body 8. And a post-process 16 for coating with.
[0048]
Here, the electric wire 7 and the sheet body 8 will be described in detail.
The electric wires 7 are, for example, wire harnesses, and in this example, there are a plurality of electric wires 7 as described above. Then, the plurality of electric wires 7 may include a drain wire. Note that the number of the electric wires 7 may be one.
[0049]
The sheet body 8 is formed by joining a metal sheet and a resin sheet. More specifically, the sheet body 8 includes a metal sheet made of Al (aluminum) foil having a thickness of 10 μm and a resin sheet made of PVC (polyvinyl chloride) formed into a sheet having a thickness of 70 μm. Are bonded via a PET (polyethylene terephthalate) formed into a sheet having a thickness of 12 μm. Then, a double-sided tape is attached to the surface on the metal sheet side. When the sheet body 8 is covered with the electric wires 7, the metal sheet functions as a shield layer, and the resin sheet functions as a sheath.
The sheet member 8 is not limited to such a configuration as long as it has a shielding effect.
[0050]
Next, the pre-process 15 and the post-process 16 will be described in detail.
The pre-process 15 is performed on the first jig plate 3 constituting the introduction portion. Specifically, the electric wire 7 is inserted through the electric wire insertion hole 9 provided in the first jig plate 3, and the double-sided tape is inserted into the sheet body insertion hole 10 provided in the first jig plate 3. The sheet body 8 is inserted in a state where the side of the metal sheet to which is attached is turned up. Thereby, the electric wire 7 and the sheet body 8 are in a parallel running state.
[0051]
The post-process 16 is performed on the second jig plate 4 and the third jig plates 5 and 6 constituting the coating portion, and the coating preparation process 17 and the third jig performed on the second jig plate 4 are performed. And a coating step 18 performed on the plates 5 and 6.
[0052]
In the coating preparation step 17, the electric wires 7 are inserted through the electric wire insertion holes 11 of the second jig plate 4, and the sheet members 8 are inserted through the sheet insertion holes 12 of the second jig plate. At this time, the sheet body 8 is bent in a substantially U-shape, and both ends in the width direction are guided inward by outer contours 12 a near both ends of the sheet body insertion hole 12, are turned inward, and are wound around the electric wire 7. The shape will be easy.
[0053]
In the covering step 18, the electric wires 7 are inserted into the through holes 13 and 14 of the third jig plates 5 and 6, and the sheet body 8 is turned so that the side of the metal sheet on which the double-sided tape is stuck is inward. The wire 7 is inserted so as to wrap the wire 7. Thereby, the sheet body 8 is wound around the electric wire 7 by longitudinal attachment, and the electric wire 7 is covered with the sheet body 8. More specifically, the sheet body 8 passes through the through hole 13 of the third jig plate 5 and the through hole 14 of the third jig plate 6 having a smaller diameter than the third jig plate 5 so that they overlap with each other. , And gradually comes into close contact with the outer periphery of the plurality of electric wires 7 and is crimped to the electric wires 7 in the through holes 14 of the third jig plate 6 (the sheet body 8 is adhered to the electric wires 7 and The overlapping parts are glued). As a result, a shield wire 19 is formed on the outer periphery where the plurality of electric wires 7 are put together, and the sheet body 8 is covered by the vertical attachment with the metal sheet inside and the resin sheet outside. In the shielded electric wire 19, the metal sheet of the sheet member 8 forms a shield layer, and the resin sheet of the sheet member 8 forms a sheath.
[0054]
In each of the above manufacturing steps, the electric wire 7 and the sheet body 8 are pulled by pulling the shielded electric wire 19 in the direction of the arrow in FIG. 2 so that the first jig plate 3, the second jig plate 4, and the third jig plate 5 and 6 in this order.
[0055]
According to the shielded wire manufacturing jig 1 and the shielded wire manufacturing method of the present embodiment as described above, the shielded wire can be manufactured easily and at low cost. Moreover, it is possible to manufacture a long shielded wire without limiting the length of the wire, and to obtain a sufficient shielding effect by the sheet body wrapped around the wire by longitudinal attachment. it can.
[0056]
Also, by covering the electric wire 7 with the sheet body 8 formed by joining the metal sheet and the resin sheet, the shield layer and the sheath can be formed at the same time.
[0057]
Further, since the diameters of the through holes 13 and 14 of the third jig plates 5 and 6 are reduced in this order, the sheet body 8 can be tightly covered with the electric wires 7 without any wrinkles and can be covered.
[0058]
In addition, the substantially U-shaped sheet body insertion hole 12 of the second jig plate 4 may be shaped so that not only the outer contour 12a but also the inner contour 12b is directed inward (not shown).
[0059]
As shown in FIG. 3, the sheet body insertion hole 12 is formed such that the outer contour 12a and the inner contour 12b are directed inward, and the left end 12d is higher than the right end 12c. It may be formed (conversely, the right end 12c may be higher than the left end 12d). As a result, the sheet body 8 inserted into the sheet body insertion hole 12 is bent into a substantially U-shape so that the heights of both ends in the width direction are different, so that the sheet body 8 has a portion where the sheet bodies 8 overlap. It is easy to wind around the electric wire 7.
The sheet insertion hole 12 may have a substantially O-shape instead of a substantially U-shape.
[0060]
Next, a description will be given of a second example of the embodiment of the shielded wire manufacturing jig and the shielded wire manufacturing method according to the present invention.
4 is a perspective view showing a jig for manufacturing the shielded electric wire of the present example, FIG. 5 is a perspective view when the electric wire is set in the jig for manufacturing the shielded electric wire shown in FIG. 4, and FIG. FIGS. 7 and 8 are partially enlarged views of a second jig plate that constitutes the shielded wire manufacturing jig shown in FIG. 4, illustrating a manufacturing process of the shielded wire using the manufacturing jig. Note that the same elements as those in the first example of the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0061]
In the drawing, reference numeral 30 denotes a jig for manufacturing a shielded electric wire of the present example. The jig 30 for manufacturing a shielded electric wire includes a first jig plate 31 provided on the substrate 2 and a second jig plate. 32 and two third jig plates 33, 34 in this order. Note that the first jig plate 31 side is defined as a start end side, and the third jig plates 33 and 34 are defined as end ends.
[0062]
The first jig plate 31, the second jig plate 32, and the third jig plates 33, 34 face each other at predetermined intervals, as in the first example of the above embodiment. Thus, it is provided on the substrate 2. The first jig plate 31, the second jig plate 32, and the third jig plates 33, 34 are in a state of being aligned on a straight line.
[0063]
Further, as in the first example of the above-described embodiment, the first jig plate 31 constitutes an introduction portion for causing the electric wire 7 and the sheet body 8 to run in parallel, and the second jig plate 32 The third jig plates 33 and 34 gradually wind the sheet body 8 around the electric wire 7 by longitudinal attachment, and constitute a covering portion for covering the electric wire 7 with the sheet body 8.
[0064]
The first jig plate 31 and the third jig plates 33 and 34 are configured to be divided into a first member 35 and a second member 36 which can be separated from each other. The electric wire insertion hole 9 of the first jig plate 31 and the through holes 13 and 14 of the third jig plates 33 and 34 are located at the boundary between the first member 35 and the second member 36.
[0065]
The first member 35 and the second member 36 are connected via a hinge 37. On the opposite side of the hinge 37 between the first member 35 and the second member 36, a not-shown locking means is provided. Then, the first member 35 and the second member 36 can be held in a closed state by the locking means, and can be unlocked and rotated about the hinge 37 to be opened. Has become.
[0066]
The second jig plate 32 is provided with a slit 38 for inserting the electric wire 7 into the electric wire insertion hole 11. The slit 38 is provided so as to communicate with the electric wire insertion hole 11 from the upper end surface of the second jig plate 32. The slit 38 is provided so as not to communicate with the sheet insertion hole 12.
[0067]
A sleeve 39 is rotatably fitted in the electric wire insertion hole 11 of the second jig plate 32. The length of the sleeve 39 is longer than the thickness of the second jig plate 32. The sleeve 39 has a slit 40 in the axial direction, and allows the electric wire 7 to be inserted into the hollow portion.
[0068]
In manufacturing a shielded electric wire using the above-described shielded wire manufacturing jig 30, the electric wire 7 is set on the shielded wire manufacturing jig 30 as follows. In this example, the electric wire 7 has a connector 41 on one end side.
[0069]
That is, as shown in FIG. 5, the first member 35 and the second member 36 of the first jig plate 31 and the third jig plates 33 and 34 are opened and separated, and the electric wire insertion holes 9 and the through holes 13 and 14 is opened. Further, the slit 40 of the sleeve 39 fitted into the electric wire insertion hole 11 of the second jig plate 32 is aligned with the slit 38 of the second jig plate 32 (see FIGS. 5 and 7). . Then, the electric wire 7 is inserted into the electric wire insertion hole 9 and the through holes 13 and 14 from above the jig 30 for manufacturing the shielded electric wire, and is inserted into the hollow portion of the sleeve 39 through the slit 38 of the second jig plate 32. .
[0070]
Then, the first member 35 and the second member 36 of the first jig plate 31 and the third jig plates 33, 34 are closed and locked by locking means. Further, the sleeve 39 is rotated by 180 degrees from the state shown in FIG. 7 as shown in FIG. 8 so as to prevent the electric wire 7 in the hollow portion of the sleeve 39 from coming out of the slit 38 of the second member 32. And the slit 38 of the second jig plate 32 are in a mismatched state (the electric wire 7 is not shown in FIG. 8). Thus, the setting of the electric wire 7 on the jig 30 for manufacturing the shielded electric wire is completed.
[0071]
After the electric wire 7 is set on the jig 30 for manufacturing the shielded electric wire in this way, as shown in FIG. 6, the above-described steps similar to those in the first example of the above embodiment are performed to form the shielded electric wire 19. Is done.
[0072]
According to the shielded wire manufacturing jig 30 and the shielded wire manufacturing method of the present embodiment as described above, the same effects as those of the first example of the above embodiment can be obtained, and the wire 7 has the connector 41. Even so, such an electric wire 7 is inserted into the electric wire insertion hole 9 of the first jig plate 31, the electric wire insertion hole 11 of the second jig plate 32, and the through holes 13 and 14 of the third jig plates 33 and 34. It is possible.
[0073]
Further, by making the slit 40 of the sleeve 39 fitted into the wire insertion hole 11 of the second jig plate 32 inconsistent with the slit 38 of the second jig plate 32, the electric wire 7 in the hollow portion of the sleeve 39 is made. However, it can be prevented from getting out of the slit 38 of the second jig plate 32.
[0074]
In the second example of the above-described embodiment, as a member for preventing the electric wire 7 in the electric wire insertion hole 11 of the second jig plate 32 from coming out of the slit 38, instead of the sleeve 39, FIG. The electric wire retaining member 42 shown in FIG.
[0075]
The electric wire retaining member 42 is formed in a substantially T-shape when viewed from the front, and has a thickness substantially equal to the thickness of the second jig plate 32. The electric wire retaining member 42 has a rib 44 erected from the base 43 and formed integrally with the base 43. The rib 44 fits into the slit 38 of the second jig plate 32 and covers the slit 38 over the entire length.
[0076]
When the electric wire 7 is set on the jig 30 for manufacturing the shielded electric wire in the case where the electric wire 7 is provided with the electric wire retaining member 42, after the electric wire 7 is inserted into the electric wire insertion hole 11 from the slit 38 of the second jig plate 32, The rib 44 of the electric wire retaining member 42 is fitted into the slit 38 to close the slit 38. Thereby, it is possible to prevent the electric wire 7 in the electric wire insertion hole 11 from coming out of the slit 38.
[0077]
In addition, the sheet insertion hole 12 of the second jig plate 32 may be deformed similarly to the first example of the above-described embodiment, other than the illustrated one.
[0078]
The jig for manufacturing a shielded electric wire according to the present invention includes an introduction portion for running the electric wire 7 and the sheet body 8 in parallel, and gradually winding the sheet body 8 around the electric wire 7 by vertically attaching the electric wire 7 to the sheet body. It is only necessary to have a covering portion for covering with 8, and the present invention is not limited to those shown in the first and second examples of the above embodiment. In addition, the method for manufacturing a shielded electric wire according to the present invention also includes a pre-process for causing the electric wire 7 and the sheet body 8 to run side by side, and gradually winding the sheet body 8 around the electric wire 7 by vertically attaching the electric wire 7 to the sheet. A post-process for covering with the body 8 may be provided, and the present invention is not limited to the first and second examples of the above embodiment.
[0079]
For example, the two third jig plates indicated by reference numerals 5 and 6 or 33 and 34 may be only one third jig plate indicated by reference numerals 6 and 34.
[0080]
Further, the number of the third jig plate is only one, and the thickness of the third jig plate is made larger than that shown in the figure, and the through hole is formed in a truncated cone shape whose diameter gradually decreases toward the terminal end. You may. The sheet member 8 inserted into the through hole of the third jig plate having such a configuration gradually adheres to the electric wire 7 and can cover the electric wire without wrinkles.
[0081]
Further, the number of the third jig plates may be larger than two, and the diameter of the through hole provided in the third jig plate may be reduced toward the terminal end. Thereby, the sheet body 8 wound around the electric wire 7 gradually comes into close contact with the electric wire 7 as it passes through the through holes of the third jig plate. Can be coated.
[0082]
Although not shown, between the first jig plate 3 (first jig plate 31) and the second jig plate 4 (second jig plate 32), the electric wire 7 is inserted substantially at the center. An electric wire insertion hole having a substantially circular shape in a plan view is provided, and below the electric wire insertion hole, a substantially U-shaped sheet body insertion hole 12 of the second jig plate 4 (the second jig plate 32) is provided. A plate (a first jig plate 3 (a first jig plate 31), a second jig plate 4 (a second jig plate 32) provided with a sheet insertion hole having a large radius and having a circular arc shape in plan view. ) And the third jig plates 5 and 6 (the same shape and size as the third jig plates 33 and 34). Thereby, the sheet body 8 can be gradually made substantially U-shaped.
[0083]
Further, although not shown, the shape of the sheet body insertion hole 10 of the first jig plate 3 (the first jig plate 31) is not a linear shape in a plan view, but a shape with a slight R (the second jig plate 4 ( R) may be larger than the sheet insertion hole 12 of the second jig plate 32).
[0084]
In addition, the pressure bonding of the sheet body 8 to the electric wire 7 may be performed as follows. That is, instead of applying a double-sided tape to the surface of the sheet body 8 on the metal sheet side, a thin hot-melt material is applied. Further, a heating means is provided around the through hole 14 of the third jig plate 6 (third jig plate 34). Then, when the electric wire 7 passes through the through-hole 14 between the sheet 8 and the sheet 8, the sheet 8 may be heated by the heating means and the sheet 8 may be crimped to the electric wire 7 by heat fusion.
[0085]
【The invention's effect】
As described above, according to the first and eighth aspects of the present invention, a shielded electric wire can be easily manufactured at low cost, and the length of the electric wire is not limited, and the shielded electric wire is long. An electric wire can be manufactured, and a sufficient shielding effect can be obtained by the sheet body wound around the electric wire by longitudinal attachment.
[0086]
According to the second and ninth aspects of the invention, when forming the shielded electric wire, the electric wire is covered with the sheet body, and the shield layer and the sheath can be formed simultaneously.
[0087]
According to the third and tenth aspects of the present invention, the electric wire and the sheet member are brought into parallel running by the first jig plate, and the sheet member is vertically extended around the electric wire by the second jig plate and the third jig plate. The electric wire is gradually wound by being attached, and the electric wire is covered with the sheet body to form a shielded electric wire, so that the shielded electric wire can be easily manufactured at low cost.
[0088]
According to the invention as set forth in claims 4 and 11, the sheet body wound around the electric wire gradually adheres to the electric wire as it passes through the through holes of the plurality of third jig plates, and at least at the final end. The sheet is crimped to the electric wire in the through hole, and the sheet body can be covered and adhered to the electric wire without wrinkles.
[0089]
According to the fifth and twelfth aspects of the invention, it is easy to insert an electric wire into the electric wire insertion hole of the first jig plate, the second jig plate and the through hole of the third jig plate. Even if it has, such an electric wire can be inserted in the electric wire insertion hole and the through hole.
[0090]
According to the sixth and thirteenth aspects of the present invention, the sleeve fitted in the wire insertion hole of the second jig plate prevents the wire in the wire insertion hole from coming out of the slit of the second jig plate. Can be prevented.
[0091]
According to the seventh and fourteenth aspects, the ribs of the retaining member are fitted into the slits of the second jig plate to close the slits, so that the electric wires in the electric wire insertion holes come out of the slits. Can be prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first example of an embodiment of a shielded wire manufacturing jig according to the present invention.
FIG. 2 is a perspective view showing a manufacturing process of the shielded electric wire by the jig for manufacturing the shielded electric wire shown in FIG. 1;
FIG. 3 is a partially enlarged view showing a modified example of a sheet body insertion hole provided in a second jig plate constituting the jig for manufacturing the shielded electric wire shown in FIG.
FIG. 4 is a perspective view showing a second example of the embodiment of the shielded wire manufacturing jig according to the present invention.
FIG. 5 is a perspective view when the electric wire is set on the jig for manufacturing the shielded electric wire shown in FIG. 4;
FIG. 6 is a perspective view showing a manufacturing process of the shielded electric wire using the shielded electric wire manufacturing jig shown in FIG. 4;
7 is a partially enlarged view of a second jig plate constituting the jig for manufacturing the shielded electric wire shown in FIG. 4;
8 is a partially enlarged view of a second jig plate constituting the jig for manufacturing the shielded electric wire shown in FIG.
FIG. 9 is a front view showing a second jig plate provided with a wire retaining member.
FIG. 10 is a front view showing a state where the rib of the electric wire retaining member is fitted to the slit of the second jig plate from the state shown in FIG. 9;
[Explanation of symbols]
1,30 Shielded wire manufacturing jig
3,31 1st jig board
4,32 Second jig plate
5,6,33,34 Third jig plate
7 Electric wire
8 sheet body
9,11 Wire insertion hole
10,12 Sheet body insertion hole
13,14 Through hole
15 previous process
16 Post-process
17 Coating preparation process
18 Coating process
35 First member
36 Second member
38 slit
39 sleeve
40 slits
42 Wire retaining member
44 ribs

Claims

An introduction part for running the electric wire and the sheet body having a shielding effect in parallel,
While gradually winding the sheet body around the electric wire by longitudinal attachment, a covering portion for covering the electric wire with the sheet body,
A jig for manufacturing a shielded electric wire, comprising:

The jig according to claim 1, wherein the sheet member is formed by joining a metal sheet and a resin sheet.

The first jig plate, the second jig plate, and the third jig plate are arranged in a straight line at predetermined intervals in this order from the start end to the end so that the plate surfaces face each other. Be prepared
The first jig plate constitutes the introduction portion, the second jig plate and the third jig plate constitute the covering portion,
In the first jig plate, an electric wire insertion hole for inserting an electric wire is provided, and a sheet insertion hole for inserting the sheet body is provided near the electric wire insertion hole, and the sheet insertion hole is provided. Is formed in a linear shape in plan view having a length equal to or greater than the width of the sheet body,
The second jig plate is provided with an electric wire insertion hole for inserting the electric wire, and a substantially U-shaped or substantially O-shaped sheet body insertion hole for inserting the sheet is inserted into the electric wire insertion hole. Is provided so as to surround the
The third jig plate is provided with a through hole having a substantially circular shape in a plan view for inserting the electric wire and inserting the sheet body so as to wrap the electric wire, and covering the sheet body with the electric wire. The jig for manufacturing a shielded electric wire according to claim 1 or 2, wherein:

A plurality of the third jig plates are provided, and the diameter of each of the through holes of the plurality of third jig plates is reduced toward the terminal side, and at least the diameter of the through hole at the final end is set to the sheet body to the electric wire. 4. The jig for manufacturing a shielded electric wire according to claim 3, wherein the jig has a size capable of crimping.

The first jig plate and the third jig plate are divided into a first member and a second member which can be separated from and separated from each other, and a boundary portion between the first member and the second member is provided. Position the wire insertion hole or the through hole,
The jig for manufacturing a shielded electric wire according to claim 3 or 4, wherein a slit is formed in the second jig plate so as to pass through the electric wire insertion hole from an end face and to insert the electric wire into the electric wire insertion hole. .

The sleeve according to claim 5, wherein a sleeve having a slit formed in an axial direction and through which the electric wire can be inserted into a hollow portion is rotatably fitted into the electric wire insertion hole of the second jig plate. Jig for manufacturing shielded electric wire.

The manufacturing jig of a shielded electric wire according to claim 5, further comprising an electric wire retaining member having a rib that fits into the slit provided in the second jig plate and covers the slit over its entire length. Utensils.

A pre-process for running the electric wires and the sheet having a shielding effect in parallel,
A subsequent step for gradually winding the sheet body around the electric wire by longitudinal attachment, and covering the electric wire with the sheet body,
A method for manufacturing a shielded electric wire, comprising:

The method for manufacturing a shielded electric wire according to claim 8, wherein the sheet body is formed by joining a metal sheet and a resin sheet, and winding and covering the electric wire with the resin sheet side outside.

In the pre-process, the electric wire is inserted through an electric wire insertion hole provided in the first jig plate, and the width is equal to or greater than the width of the sheet member provided in the vicinity of the electric wire insertion hole of the first jig plate. The sheet body is to be inserted into a sheet body insertion hole having a length of a linear shape in plan view having the above-described length,
The post-process is carried out in an electric wire insertion hole provided in a second jig plate provided so as to be aligned with the first jig plate and with the first jig plate facing each other. A coating preparation step of inserting the sheet body into a substantially U-shaped or substantially O-shaped sheet body insertion hole provided in the second jig plate so as to surround the electric wire insertion hole while inserting the electric wire; A plan view provided on a third jig plate provided on a straight line with the first jig plate and the second jig plate and provided with the second jig plate facing each other. And a covering step of inserting the sheet into the substantially circular through-hole so as to wrap the electric wire and covering the electric wire, and covering the sheet with the electric wire in the through-hole. Production of the shielded electric wire according to claim 8 or 9 Law.

A plurality of the third jig plates are provided, and in the covering step, the electric wires are inserted through the through holes of the plurality of the third jig plates and the sheet body is inserted so as to wrap the electric wires, and The method for manufacturing a shielded electric wire according to claim 10, wherein the diameter of the hole is reduced, and the sheet body is crimped to the electric wire.

The first jig plate and the third jig plate are configured to be divided into a first member and a second member that can be separated from and separated from each other, and the boundary portion between the first member and the second member is The wire insertion hole or the through hole is located,
The second jig plate is provided with a slit through which the electric wire is inserted into the electric wire insertion hole from an end face, and the electric wire is inserted into the electric wire insertion hole,
The first member and the second member are separated into an electric wire insertion hole of the first jig plate and a through hole of the third jig plate. (3) Put the electric wire into the through hole of the jig plate in an open state,
The method for manufacturing a shielded electric wire according to claim 10, wherein the electric wire is inserted through the slit into the electric wire insertion hole of the second jig plate.

A sleeve having a slit formed in the axial direction and allowing the electric wire to pass through the hollow portion is rotatably fitted into the electric wire insertion hole of the second jig plate,
After the electric wire is inserted into the hollow portion of the sleeve with the slit of the sleeve and the slit of the second jig plate aligned with each other, the sleeve is rotated and the slit of the sleeve and the second jig are rotated. The method for manufacturing a shielded electric wire according to claim 12, wherein the slit of the component plate is set in a mismatched state.

After the electric wire is inserted into the electric wire insertion hole from the slit of the second jig plate, the electric wire has a rib that fits into the slit of the second jig plate and closes the slit over its entire length. 13. The method according to claim 12, wherein the rib of the member is fitted into the slit.