JP3722236B2 - Circuit body manufacturing method - Google Patents

Circuit body manufacturing method Download PDF

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Publication number
JP3722236B2
JP3722236B2 JP22649895A JP22649895A JP3722236B2 JP 3722236 B2 JP3722236 B2 JP 3722236B2 JP 22649895 A JP22649895 A JP 22649895A JP 22649895 A JP22649895 A JP 22649895A JP 3722236 B2 JP3722236 B2 JP 3722236B2
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Japan
Prior art keywords
electric wire
circuit body
mold
receiving groove
die
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JP22649895A
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JPH0973823A (en
Inventor
武士 小山
基文 前嶋
早苗 加藤
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Yazaki Corp
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Yazaki Corp
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/0011Working of insulating substrates or insulating layers
    • H05K3/0014Shaping of the substrate, e.g. by moulding
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/10Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern

Description

【0001】
【発明の属する技術分野】
本発明は、成形型やケーシングプレート(製品)に回路パターン形状の電線収容溝を形成して電線を所望の回路形状に布線させる回路体の製造方法に関するものである。
【0002】
【従来の技術】
図21は従来の回路体を示すものであり、この回路体90は合成樹脂製の絶縁基板91に所要形状の複数のバスバー92を配設して構成される。該バスバー92の所要端部は折り曲げられて雄タブ端子93を構成し、該雄タブ端子93は、図示しない電気接続箱のコネクタ部内に配置されて、外部コネクタ等に接続される。各バスバー92は打抜き型や曲げ型により所要形状に製作される。
【0003】
しかしながら、上記従来の回路体の製造方法にあっては、バスバー92を各回路仕様に応じて多種類形成しなければならないと同時に、バスバー92のパターン形状に応じて多種類の絶縁基板91を形成しなければならず、バスバー92及び絶縁基板91に汎用性がないために、専用のバスバー型や樹脂成形型の作製に多くの費用がかかるという問題があった。また、多種類のバスバー92を所要形状に打ち抜くのに多くの工数を必要とした。さらに、各種形状のバスバー92を絶縁基板91に組み付けるための装置(工程)が必要で、工程が複雑化した。
【0004】
一方、図22は特願平2−299069号に示された回路体の製造方法を示すものである。
この製造方法は、布線板94に立設した複数の布線ピン95の間に電線布線ノズル96を挿通させ、図示しないX−Yテーブルで該布線板94を前後左右に移動させつつ該ノズル96から一筆書き状に電線97を送り出して布線するものである。
【0005】
該布線板94は、四隅の支柱98にコイルばね99を介して上下方向スライド可能に支持され、該布線板94上には、布線ピン挿通孔100を有して該支柱98に固定された固定板101が対向して配置されている。
電線97の布線が完了したら、合成樹脂製のケーシングプレート102に電線97を移し替える。すなわち、固定板101上にケーシングプレート102を裏返しに被せ、図23に示すケーシングプレート102の突出部103で布線ピン95を押して布線板94ごと下降させて該突出部103の間に電線97を押し込ませる。次いで電線97を圧接端子104に押し込んで接続させる。
【0006】
しかしながら、上記製造方法にあっては、布線ピン95に接している部分以外の電線97の位置精度がでないという問題や、電線97が弛んだ場合に電線97の位置精度が狂うという問題があった。
【0007】
【発明が解決しようとする課題】
本発明は、上記した点に鑑み、バスバーや絶縁基板を各種形状に応じて形成しなければならないという問題や、バスバーを絶縁基板に組み付けなければならないという問題を解消すると共に、電線の布線位置精度を向上させ得る回路体の製造方法を提供することを目的とする。
【0008】
【課題を解決するための手段】
上記目的を達成するために、本発明は、一方の成形型に回路パターン形状の電線収容溝を形成し、該電線収容溝に電線を所要回路形状に布線し、該電線収容溝に対する凹溝部を有する他方の成形型を該一方の成形型に接合し、該凹溝部と該電線収容溝とに樹脂材を充填して、該凹溝部で基板部を、該電線収容溝で電線を含む突条部をそれぞれ形成して回路体を構成する回路体の製造方法を基本とする。
上記回路体の製造方法において、布線ノズルの先端にガイド板を設け、該ガイド板を前記一方の成形型に摺接させつつ該布線ノズルから前記電線収容溝に前記電線を布線することも可能である。
また、第三の成形型の凹溝部に前記突条部を収容して樹脂材を充填し、回路体にフラットな基板部を一体に形成することも可能である。
また、前記一方の成形型の電線収容溝の所要部に電線切断用のダイを貫設し、前記他方の成形型に、該ダイに対するパンチを突設して、両成形型の接合により電線収容溝内の電線を切断することも可能である。
さらに、前記ダイに進入可能な閉塞ピンを前記一方の成形型に昇降可能に設け、前記パンチを前記他方の成形型に昇降可能に設け、該パンチで電線を切断した後、該閉塞ピンと該パンチとを前記凹溝部の外側に位置させて樹脂成形する方法も可能である。
また、前記他方の成形型に、前記凹溝部に続くコネクタ成形部を一体に形成して、前記基板部にコネクタハウジングを一体に形成することも可能である。
【0009】
【発明の実施の形態】
本発明に係る回路体の製造方法は、金属等の成形型に複雑な回路パターン形状の電線収容溝を形成して、該電線収容溝の全てないしは一部分を用いて所要回路形状に電線をノズルから布線した後、樹脂成形により基板部に電線を一体的に固着させるものである。基板部は電線を含んだフラットな形状にも成形でき、電線を成形と同時にパンチで切断して複数の電線回路に分割することもできる。あるいは、樹脂成形を行わずに、合成樹脂製の製品としてのケーシングプレートの電線収容溝に直接に電線を布線して回路体を構成させてもよい。
【0010】
以下に本発明の実施の形態の具体例を図面を用いて詳細に説明する。
図1〜6は本発明に係る回路体の製造方法の一実施例を示すものである。
この製造方法は、先ず図1の如く、一方の成形金型(下型)1の表面側に形成した電線収容溝2に布線ノズル3から電線4を布線する。該電線収容溝2は一筆書き状に連続して形成され、且つ種々の回路パターン形状に対応できるように曲線と直線を織りまぜた比較的複雑な形状に設定されている。なお図1よりも更に複雑にXY方向に網の目のように入り組んだ電線収容溝2を形成してもよい。
【0011】
本例において電線4にはエナメル線が使用されている。エナメル線等の被覆電線4を使用する場合は、図1の如く電線収容溝2は各所で交差させて形成する。被覆電線4は絶縁されているから交差してもショートすることがない。電線4として裸線を使用する場合は、電線収容溝2を交差させずに一筆書き状に連続して形成する。該電線収容溝2の幅及び深さは電線径よりもやや大きく設定し、収容溝2内に樹脂材を注入可能とする。
【0012】
前記布線ノズル3は従来例(図22)と同様のものであり、下型1ないしは布線ノズル3をNC制御でXY方向に駆動して、電線2を収容溝2内に送り込む。電線4は収容溝2内で位置決めされるから、従来の布線ピンを用いる方法(図22)よりも電線4の全長に渡っての位置精度が良い。
【0013】
電線収容溝2に所望の回路パターンで電線4を布線し終えたら、図2の如く他方の成形金型(上型)5を前記成形金型(下型)1に重ねて、該上型5のフラットな凹溝部6と、該凹溝部6に続く下型の電線収容溝2とにインジェクション7から絶縁性の溶融樹脂材8を注入する。該インジェクション7は上型5に固定され、また該凹溝部6は下型1の電線収容溝2を覆う如く上型5の下端面側において幅広に形成されている。該凹溝部6において回路体の基板部9が形成され、該凹溝部6の下側の電線収容溝2において、電線4を基板部9に固着させた突条部10が一体に形成される。
【0014】
図3は完成した回路体(第一回路体)11を示すものであり、合成樹脂製の基板部9の下側に電線4が突条部10(図2)内に埋め込まれて位置する。なお、絶縁被覆電線4は突条部10内に埋め込まれないで突条部10から露出していても構わず、要は、電線4が突条部10の樹脂によって基板部9に固定されていればよい。電線4は基板部9上に所要パターン形状に固定されている。
【0015】
該突条部10すなわち電線4の出っ張りをなくしたい場合には、図4の如く上記第一回路体11の突条部10側に第三の成形金型12をあてて、前記上型5と該第三の成形金型(下型)12との間において、該成形金型12の凹溝部13内に突条部10を位置させた状態でインジェクション14から該凹溝部13に絶縁性の溶融樹脂材15を注入する。該インジェクション14は下型に固定されている。これにより、前記基板部9の下側にもう一枚のフラットな基板部16が一体に形成され、両基板部9,16は相互に固着して、図5に示すようなフラットな形状の第二回路体17が完成する。前記布線ノズル3と下型1と上型5と第三の成形型12とで回路体製造装置が構成される。
【0016】
そして最後に図6の如く電線4の所要位置に切断孔18を形成して電線4を複数の電線回路4aに分割し、さらに電線4の所要位置に端子19を溶接や圧接等の手段で接続固定して、回路体20が完成する。切断孔18の形成は回路体完成後に図示しないパンチやダイにより行ったり、あるいは後述する如く樹脂成形と同時に行ったりする。端子19の接続も同様に回路体完成後に基板部9,16に端子孔18を穿設したり、あるいは上型5に組み付けた圧接端子を樹脂成形と同時に電線4に圧接させるといった方法で行う。
【0017】
上記実施例によれば、成形金型1に電線4の布線という成形以外の機能を併せ持たせたから、従来に較べて回路体の組立作業が極めて簡素化されている。また従来のバスバー等の型ものと比較し、打抜き等による材料ロスがないと共に、打抜きや曲げ加工を必要とせず、絶縁基板も必要がなく、それらの組立の必要もない。さらに、同一の成形金型1,5で布線経路の異なるものができ、その汎用性により金型コストが削減される。また、絶縁電線4を用いることにより、多層の回路を一層に構成することができる。
【0018】
図7〜11は、電線切断孔を有する回路体の製造方法を示すものである。
この方法では、図7の如く電線収容溝22を形成した下型(成形金型)23に複数のダイ24を貫設し、該ダイ24に対するパンチ25を上型(成形金型)26の凹溝部31に突設した回路体製造装置を使用する。該ダイ24は電線収容溝22の所要位置に設けられ、電線収容溝22の中心とダイ24の中心は一致し、電線収容溝22の幅よりもダイ24の内径の方が大きく形成されている。
【0019】
そして図8の如く前例同様に下型23の電線収容溝22に被覆電線27を布線する。本例において布線ノズル28の先端にはガイド板29が設けられ、該ガイド板29が下型23の表面に摺接して、電線収容溝22とノズル28との間に隙間を生じさせずに電線27を確実に電線収容溝22内に布線可能である。
【0020】
電線27の布線が終了したら、図9の如く下型23上に上型26を配置する。パンチ25はダイ24の上側に対向して位置する。次いで図10の如く上型26を下型23に接合させる。これによりパンチ25が電線27を切断し、ダイ24の下部開口から切断カス30が除去される。次いで前例同様に上型26の凹溝部31及び下型23の電線収容溝22内に溶融樹脂材32を注入し、図11のような回路体33が完成する。該回路体33の基板部34には切断孔35が形成され、該切断孔35によって電線27が切断されて複数の電線回路27aに分割されている。
上記実施例によれば、電線27の切断を成形と同時に行うことができるから、工程が集約化され簡素化される。
【0021】
図12〜15は電線切断後に切断孔を塞ぐことのできる回路体の製造方法を示すものである。
この製造方法では、図12の如く上型(成形金型)37に複数のパンチ38を昇降自在に設け、該パンチ38に対するダイ39を有する下型(成形金型)40の下側に、該ダイ39に挿入可能な閉塞ピン41を昇降自在に設けた製造装置を使用する。
【0022】
該上型37にはパンチ挿通孔42が設けられ、該挿通孔42に摺接自在なパンチ38は水平な上側基板43に垂設されている。該上側基板43は上型37の上面に当接して停止する。また、前記閉塞ピン41は下側基板44に立設され、該下側基板44には下型40と一体のガイドバー45が貫通し、該ガイドバー45に設けたコイルばね46によって下側基板44が下方に付勢されている。該下側基板44は図示しないシリンダ等でばね力に抗して閉塞ピン41と一体に上昇可能である。
【0023】
そして、下型40の電線収容溝47に図示しないノズルで電線48を布線した後、図13の如く上型37を下降させて前例同様にパンチ38で電線48を切断する。切断カス49は下型40と閉塞ピン41との隙間から除去される。
【0024】
次いで図14の如くパンチ38を上昇させてパンチ38の先端38aを上型37の凹溝部50の底面と同一面に位置させると同時に、下側基板44を押し上げて閉塞ピン41を上昇させ、閉塞ピン41の先端41aを下型40の上面51と同一面に位置させる。これにより凹溝部50内にパンチ38及び閉塞ピン41が突出せず、フラットな凹溝空間(50)が形成される。そしてインジェクション52から凹溝部50と電線収容溝47とに溶融樹脂材53を充填する。なお、閉塞ピン41の先端41aを鎖線イの如く電線収容溝47の底面と同一面に位置させて樹脂材53を充填してもよい。この場合には突条部54が電線切断位置で切欠されず、電線48の切断端が外部に露出せず、樹脂材53で覆われて絶縁される。
【0025】
最後に図15の如く上型37を上昇させ、下側基板44をさらに押し上げて、完成した回路体55を閉塞ピン41で下型40から離脱させる。すなわち電線収容溝47から電線48を含む突条部54が脱出する。閉塞ピン41はダイ39を塞ぐと同時に、回路体55を金型40から押し出す作用を行う。この方法によれば回路体55に切断孔が形成されず、回路体の強度アップが図れると同時に、切断孔のない分、図示しない端子(図6の19に相当)の配置位置を自由に設定できる。なお、上型37と下型40とが逆に配置されても何ら問題はない。
【0026】
図16〜17はコネクタ部57を一体に形成した回路体の製造方法を示すものである。
この方法では、図16の如く電線収容溝58を有する下型(成形金型)59と、該電線収容溝58に対する凹溝部59と、該凹溝部59から上方に連通する矩形筒状のハウジング成形空間60とを有する上型(成形金型)61とを使用する。
【0027】
該ハウジング成形空間60の内側には柱状の中子62が配置され、該中子62の基端には、電線収容溝58に対応して回路体に雄タブ端子挿通孔を形成するための突部63が設けられ、これら60,62,63でコネクタ成形部69を構成している。
【0028】
該上型61を下型59に接合して前例の如く樹脂材を注入することにより、図17(a)(b)に示す回路体64が形成される。すなわち上型61の凹溝部59に対応して基板部65が形成され、基板部65の裏面側に、電線収容溝58に対応して電線66を含む突条部67が形成され、基板部65の表面側に、上型61のハウジング成形空間60に対応してコネクタハウジング57が突出形成される。該コネクタハウジング57内には、基板部65に設けられて電線66に接続した端子の雄タブ部68が突出して位置する。
【0029】
図18〜20は上記成形金型に代えて従来の布線装置(図22)に対応する布線プレート70やケーシングプレート(製品)70を用いた回路体の製造方法を示すものである。
【0030】
図18の如く該布線プレート70は従来の布線ピンに代えて種々の回路パターンに対応可能な複雑な形状の電線収容溝71を有している。該電線収容溝71はプレート枠部72と、その内側に島状に配置された複数の突部73との間に形成されている。そして布線ノズル74から該電線収容溝71に電線75が布線される。該布線ノズル74は前例同様にプレート枠部72及び突部73に摺接するガイド板76を有している。布線はガイドプレート76か布線プレート70の何れかをNC制御で矢印の如くXY方向に移動させることで行われる。
【0031】
図19の如くガイド板76には電線導出用のラッパ状に湾曲した開口77が形成されている。電線75の先端部75aは、布線プレート70に設けたスタート孔78に固定され、そこからガイド板76がNC制御で所要形状に移動して収容溝71に電線75が布線されていく。
【0032】
布線プレートは図20に示すような形状のもの80であってもよい。これは前例の成形金型に対応する一筆書き状に連続した電線収容溝81を有している。布線プレート70,80に布線された電線82は従来と同様にケーシングプレートに移し替える。布線プレート70,80に代えて同形状のケーシングプレートを用いれば電線82の移し替えが不要で工数が削減される。上記布線プレートないしケーシングプレート70,80を用いることにより、電線75,82が収容溝71,81内で位置ずれなく保持され、電線75,82の全長に渡って位置精度が確保される。
【0033】
【発明の効果】
以上の如くに、本発明によれば、複雑な回路パターン形状の電線収容溝の範囲内で所要回路形状に電線を布線することで、布線経路の異なる何種類もの回路形状を得ることができるから、汎用性が拡大し、従来のような何種類ものバスバーや絶縁基板の成形が不要となり、成形型に要するコストが低減する。また、布線された電線が樹脂成形により基板部に一体に固着されるから、従来のようなバスバーと絶縁基板の面倒な組み付けが不要となり、製造工数が低減し、工程も簡素化される。さらに、電線収容溝で電線が位置決めされるから、電線の全長に渡って位置精度が向上する。そして、従来のような電線が弛んで位置精度が狂うといった問題も解消される。
【図面の簡単な説明】
【図1】本発明に係る回路体の製造方法の第一実施例の布線工程を示す斜視図である。
【図2】同じく樹脂注入工程を示す縦断面図である。
【図3】完成した第一回路体を示す斜視図である。
【図4】回路体をフラット化する工程を示す縦断面図である。
【図5】完成した第二回路体を示す斜視図である。
【図6】第二回路体に切断孔と端子を設けた状態の斜視図である。
【図7】上下の成形金型を示す分解斜視図である。
【図8】回路体の製造方法の第二実施例の布線工程を示す斜視図である。
【図9】電線を切断する工程を示す縦断面図である。
【図10】樹脂を注入する工程を示す縦断面図である。
【図11】完成した回路体を示す斜視図である。
【図12】回路体の製造方法の第三実施例を示す縦断面図である。
【図13】電線を切断した状態を示す縦断面図である。
【図14】樹脂を注入した状態を示す縦断面図である。
【図15】回路体を成形型から離脱させる状態を示す縦断面図である。
【図16】コネクタ部を一体に形成する方法を示す斜視図である。
【図17】コネクタ部付き回路体を示す(a) は正面斜視図、(b) は背面斜視図である。
【図18】回路体の製造方法の第四実施例を示す斜視図である。
【図19】同じく要部縦断面図である。
【図20】布線プレートないしケーシングプレートの他の実施例を示す斜視図である。
【図21】従来の回路体の一例を示す斜視図である。
【図22】従来の他の回路体の製造方法を示す側面図である。
【図23】完成した回路体を示す斜視図である。
【符号の説明】
1,5,12,23,26,37,40,61 成形金型
2,22,71,81 電線収容溝
4,27,75 電線
6,13,50,59 凹溝部
8,15 溶融樹脂材
9,16,65 基板部
10 突条部
11 回路体
24,39 ダイ
25,38 パンチ
41 閉塞ピン
57 コネクタハウジング
69 コネクタ成形部
70,80 布線プレート(ケーシングプレート)
74 布線ノズル
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a circuit body in which an electric wire receiving groove having a circuit pattern shape is formed in a mold or a casing plate (product) to wire an electric wire into a desired circuit shape.
[0002]
[Prior art]
FIG. 21 shows a conventional circuit body, and this circuit body 90 is configured by arranging a plurality of bus bars 92 of a required shape on an insulating substrate 91 made of synthetic resin. A required end portion of the bus bar 92 is bent to form a male tab terminal 93, and the male tab terminal 93 is disposed in a connector portion of an electric connection box (not shown) and connected to an external connector or the like. Each bus bar 92 is manufactured in a required shape by a punching die or a bending die.
[0003]
However, in the above-described conventional circuit body manufacturing method, many types of bus bars 92 must be formed according to each circuit specification, and at the same time, various types of insulating substrates 91 can be formed according to the pattern shape of the bus bar 92. In addition, since the bus bar 92 and the insulating substrate 91 are not versatile, there is a problem that a lot of cost is required for manufacturing a dedicated bus bar mold or a resin mold. In addition, many man-hours are required to punch various types of bus bars 92 into required shapes. Furthermore, an apparatus (process) for assembling the bus bars 92 of various shapes to the insulating substrate 91 is necessary, and the process is complicated.
[0004]
On the other hand, FIG. 22 shows a circuit body manufacturing method disclosed in Japanese Patent Application No. 2-299069.
In this manufacturing method, an electric wire nozzle 96 is inserted between a plurality of wiring pins 95 erected on the wiring board 94, and the wiring board 94 is moved back and forth and left and right on an XY table (not shown). An electric wire 97 is sent out from the nozzle 96 in a single stroke and wired.
[0005]
The wiring board 94 is supported by pillars 98 at four corners via a coil spring 99 so as to be slidable in the vertical direction. The wiring board 94 has a wiring pin insertion hole 100 and is fixed to the pillar 98. The fixed plates 101 are arranged to face each other.
When the wiring of the electric wire 97 is completed, the electric wire 97 is transferred to the casing plate 102 made of synthetic resin. That is, the casing plate 102 is placed over the fixed plate 101, and the wiring pin 95 is pushed by the protruding portion 103 of the casing plate 102 shown in FIG. Push in. Next, the electric wire 97 is pushed into the press contact terminal 104 to be connected.
[0006]
However, in the above manufacturing method, there is a problem that the position accuracy of the electric wire 97 other than the portion in contact with the wiring pin 95 is not sufficient, and a problem that the position accuracy of the electric wire 97 is incorrect when the electric wire 97 is loosened. It was.
[0007]
[Problems to be solved by the invention]
In view of the above points, the present invention solves the problem that the bus bar and the insulating substrate must be formed according to various shapes, and the problem that the bus bar must be assembled to the insulating substrate. An object of the present invention is to provide a circuit body manufacturing method capable of improving accuracy.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention forms a circuit pattern-shaped electric wire receiving groove in one mold, and wires are arranged in the required circuit shape in the electric wire receiving groove, and a concave groove portion for the electric wire receiving groove The other mold having the first and second molds is joined to the one mold, the resin is filled in the concave groove portion and the electric wire receiving groove, the substrate portion is formed in the concave groove portion, and the electric wire is inserted in the electric wire receiving groove. The manufacturing method of the circuit body that forms the circuit body by forming the strips is basically used.
In the circuit body manufacturing method, a guide plate is provided at the tip of the wiring nozzle, and the wire is routed from the wiring nozzle to the wire receiving groove while the guide plate is in sliding contact with the one mold. Is also possible.
It is also possible to accommodate the protrusions in the recessed grooves of the third mold and fill them with a resin material so that a flat substrate is integrally formed on the circuit body.
Further, a wire cutting die is provided in a required portion of the wire receiving groove of the one mold, and a punch for the die is protruded from the other mold. It is also possible to cut the electric wire in the groove.
Further, a closing pin capable of entering the die is provided in the one mold so as to be movable up and down, the punch is provided in the other mold so as to be raised and lowered, and after the electric wire is cut by the punch, the closing pin and the punch It is also possible to perform resin molding by positioning the outside of the concave groove portion.
It is also possible to integrally form a connector molding portion following the concave groove portion on the other molding die, and to integrally form a connector housing on the substrate portion.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The method for producing a circuit body according to the present invention includes forming a wire receiving groove having a complicated circuit pattern shape in a metal mold or the like, and using the whole or a part of the wire receiving groove, the wire from a nozzle to a required circuit shape. After wiring, the electric wires are integrally fixed to the substrate portion by resin molding. The substrate portion can be formed into a flat shape including an electric wire, and the electric wire can be cut with a punch at the same time as being formed and divided into a plurality of electric wire circuits. Alternatively, the circuit body may be configured by laying the electric wire directly in the electric wire receiving groove of the casing plate as a product made of synthetic resin without performing resin molding.
[0010]
Specific examples of embodiments of the present invention will be described below in detail with reference to the drawings.
FIGS. 1-6 shows one Example of the manufacturing method of the circuit body based on this invention.
In this manufacturing method, first, as shown in FIG. 1, a wire 4 is wired from a wire nozzle 3 into a wire housing groove 2 formed on the surface side of one molding die (lower die) 1. The electric wire receiving groove 2 is continuously formed in a single stroke and is set to a relatively complicated shape in which curves and straight lines are woven so as to correspond to various circuit pattern shapes. It is also possible to form the wire receiving groove 2 which is more complicated than FIG.
[0011]
In this example, an enameled wire is used for the electric wire 4. When using a covered electric wire 4 such as an enameled wire, the electric wire receiving grooves 2 are formed so as to intersect each other as shown in FIG. Since the covered wire 4 is insulated, it does not short-circuit even if it intersects. When using a bare wire as the electric wire 4, the electric wire receiving groove 2 is continuously formed in a single stroke without crossing. The width and depth of the electric wire receiving groove 2 are set to be slightly larger than the diameter of the electric wire so that a resin material can be injected into the receiving groove 2.
[0012]
The wiring nozzle 3 is the same as that of the conventional example (FIG. 22), and the lower mold 1 or the wiring nozzle 3 is driven in the XY direction by NC control to feed the electric wire 2 into the receiving groove 2. Since the electric wire 4 is positioned in the accommodation groove 2, the positional accuracy over the entire length of the electric wire 4 is better than the conventional method using the wiring pin (FIG. 22).
[0013]
When the wire 4 is wired in the wire receiving groove 2 with a desired circuit pattern, the other mold (upper mold) 5 is overlaid on the mold (lower mold) 1 as shown in FIG. Insulating molten resin material 8 is injected from the injection 7 into the flat concave groove portion 5 of 5 and the lower wire receiving groove 2 following the concave groove portion 6. The injection 7 is fixed to the upper mold 5, and the concave groove portion 6 is formed wide on the lower end surface side of the upper mold 5 so as to cover the wire receiving groove 2 of the lower mold 1. A substrate portion 9 of the circuit body is formed in the concave groove portion 6, and a ridge portion 10 in which the electric wire 4 is fixed to the substrate portion 9 is integrally formed in the electric wire receiving groove 2 below the concave groove portion 6.
[0014]
FIG. 3 shows a completed circuit body (first circuit body) 11, in which the electric wire 4 is embedded in the protruding portion 10 (FIG. 2) below the synthetic resin substrate portion 9. The insulated coated electric wire 4 may be exposed from the protruding portion 10 without being embedded in the protruding portion 10. In short, the electric wire 4 is fixed to the substrate portion 9 by the resin of the protruding portion 10. Just do it. The electric wire 4 is fixed on the substrate portion 9 in a required pattern shape.
[0015]
When it is desired to eliminate the protruding portion 10, that is, the protrusion of the electric wire 4, a third molding die 12 is applied to the protruding portion 10 side of the first circuit body 11 as shown in FIG. Insulative melting from the injection 14 to the concave groove portion 13 with the protrusion 10 positioned in the concave groove portion 13 of the molding die 12 between the third molding die (lower die) 12. Resin material 15 is injected. The injection 14 is fixed to the lower mold. Thereby, another flat substrate portion 16 is integrally formed on the lower side of the substrate portion 9, and both the substrate portions 9 and 16 are fixed to each other to form a flat shape as shown in FIG. The two-circuit body 17 is completed. The wiring nozzle 3, the lower mold 1, the upper mold 5, and the third mold 12 constitute a circuit body manufacturing apparatus.
[0016]
Finally, as shown in FIG. 6, a cutting hole 18 is formed at a required position of the electric wire 4 to divide the electric wire 4 into a plurality of electric wire circuits 4a, and a terminal 19 is connected to the required position of the electric wire 4 by means such as welding or pressure welding. The circuit body 20 is completed by fixing. The cut hole 18 is formed by a punch or die (not shown) after the circuit body is completed, or at the same time as resin molding as described later. Similarly, the connection of the terminal 19 is performed by forming a terminal hole 18 in the board portions 9 and 16 after the circuit body is completed, or by pressing the press contact terminal assembled to the upper mold 5 to the electric wire 4 simultaneously with resin molding.
[0017]
According to the above embodiment, since the molding die 1 is provided with a function other than the molding of the wiring of the electric wire 4, the assembly work of the circuit body is greatly simplified as compared with the prior art. Compared to conventional bus bars and the like, there is no material loss due to punching, no punching or bending, no insulating substrate, and no assembly. Furthermore, the same molding dies 1 and 5 can have different wiring paths, and the die cost is reduced due to their versatility. Further, by using the insulated wire 4, a multilayer circuit can be formed in one layer.
[0018]
7-11 shows the manufacturing method of the circuit body which has an electric wire cutting hole.
In this method, as shown in FIG. 7, a plurality of dies 24 are penetrated through a lower mold (molding mold) 23 in which an electric wire receiving groove 22 is formed, and punches 25 corresponding to the die 24 are recessed in the upper mold (molding mold) 26. A circuit body manufacturing apparatus protruding from the groove 31 is used. The die 24 is provided at a required position of the wire receiving groove 22, the center of the wire receiving groove 22 and the center of the die 24 are coincident, and the inner diameter of the die 24 is formed larger than the width of the wire receiving groove 22. .
[0019]
Then, as shown in FIG. 8, the covered electric wire 27 is wired in the electric wire receiving groove 22 of the lower mold 23 as in the previous example. In this example, a guide plate 29 is provided at the tip of the wiring nozzle 28, and the guide plate 29 is in sliding contact with the surface of the lower mold 23 without causing a gap between the wire receiving groove 22 and the nozzle 28. The electric wire 27 can be reliably wired in the electric wire receiving groove 22.
[0020]
When the wiring of the electric wire 27 is completed, the upper die 26 is arranged on the lower die 23 as shown in FIG. The punch 25 is positioned facing the upper side of the die 24. Next, the upper die 26 is joined to the lower die 23 as shown in FIG. As a result, the punch 25 cuts the electric wire 27 and the cutting residue 30 is removed from the lower opening of the die 24. Next, as in the previous example, the molten resin material 32 is injected into the recessed groove portion 31 of the upper mold 26 and the electric wire receiving groove 22 of the lower mold 23 to complete the circuit body 33 as shown in FIG. A cutting hole 35 is formed in the substrate portion 34 of the circuit body 33, and the electric wire 27 is cut by the cutting hole 35 to be divided into a plurality of electric wire circuits 27a.
According to the said Example, since the cutting | disconnection of the electric wire 27 can be performed simultaneously with shaping | molding, a process is integrated and simplified.
[0021]
12 to 15 show a method of manufacturing a circuit body that can close a cutting hole after cutting an electric wire.
In this manufacturing method, as shown in FIG. 12, a plurality of punches 38 are provided on an upper mold (molding mold) 37 so as to be movable up and down, and a lower mold (molding mold) 40 having a die 39 with respect to the punch 38 is provided below A manufacturing apparatus provided with a closing pin 41 that can be inserted into the die 39 is used.
[0022]
The upper die 37 is provided with a punch insertion hole 42, and a punch 38 that is slidable in contact with the insertion hole 42 is suspended from a horizontal upper substrate 43. The upper substrate 43 comes into contact with the upper surface of the upper die 37 and stops. The closing pin 41 is erected on the lower substrate 44, and a guide bar 45 integral with the lower mold 40 passes through the lower substrate 44, and the lower substrate is supported by a coil spring 46 provided on the guide bar 45. 44 is biased downward. The lower substrate 44 can be lifted together with the closing pin 41 against a spring force by a cylinder or the like (not shown).
[0023]
Then, after arranging the electric wire 48 in the electric wire receiving groove 47 of the lower die 40 with a nozzle (not shown), the upper die 37 is lowered as shown in FIG. 13 and the electric wire 48 is cut with the punch 38 as in the previous example. The cutting residue 49 is removed from the gap between the lower mold 40 and the closing pin 41.
[0024]
Next, as shown in FIG. 14, the punch 38 is raised so that the tip 38 a of the punch 38 is positioned on the same plane as the bottom surface of the concave groove portion 50 of the upper die 37, and at the same time, the lower substrate 44 is pushed up to raise the closing pin 41. The tip 41 a of the pin 41 is positioned on the same plane as the upper surface 51 of the lower mold 40. As a result, the punch 38 and the closing pin 41 do not protrude into the concave groove portion 50, and a flat concave groove space (50) is formed. Then, the molten resin material 53 is filled from the injection 52 into the recessed groove portion 50 and the wire housing groove 47. Note that the resin material 53 may be filled with the end 41a of the closing pin 41 positioned on the same plane as the bottom surface of the wire receiving groove 47 as indicated by a chain line a. In this case, the protrusion 54 is not cut out at the electric wire cutting position, and the cut end of the electric wire 48 is not exposed to the outside, and is covered with the resin material 53 and insulated.
[0025]
Finally, as shown in FIG. 15, the upper die 37 is raised, the lower substrate 44 is further pushed up, and the completed circuit body 55 is detached from the lower die 40 with the closing pins 41. That is, the protrusion 54 including the electric wire 48 escapes from the electric wire receiving groove 47. The closing pin 41 closes the die 39 and simultaneously pushes out the circuit body 55 from the mold 40. According to this method, the cutting hole is not formed in the circuit body 55, the strength of the circuit body can be increased, and at the same time, the arrangement position of a terminal (not shown) corresponding to 19 in FIG. it can. It should be noted that there is no problem even if the upper mold 37 and the lower mold 40 are arranged in reverse.
[0026]
16 to 17 show a method of manufacturing a circuit body in which the connector portion 57 is integrally formed.
In this method, as shown in FIG. 16, a lower mold (molding die) 59 having an electric wire receiving groove 58, a concave groove portion 59 for the electric wire receiving groove 58, and a rectangular cylindrical housing molding communicating upward from the concave groove portion 59. An upper die (molding die) 61 having a space 60 is used.
[0027]
A columnar core 62 is disposed inside the housing molding space 60, and a protrusion for forming a male tab terminal insertion hole in the circuit body corresponding to the electric wire receiving groove 58 at the base end of the core 62. A portion 63 is provided, and the connector forming portion 69 is constituted by these 60, 62 and 63.
[0028]
By joining the upper mold 61 to the lower mold 59 and injecting a resin material as in the previous example, a circuit body 64 shown in FIGS. 17A and 17B is formed. That is, the substrate portion 65 is formed corresponding to the concave groove portion 59 of the upper mold 61, and the protrusion portion 67 including the electric wire 66 is formed on the back surface side of the substrate portion 65 corresponding to the electric wire receiving groove 58. A connector housing 57 is formed on the surface side of the upper housing 61 so as to protrude from the housing molding space 60 of the upper die 61. In the connector housing 57, a male tab portion 68 of a terminal provided on the substrate portion 65 and connected to the electric wire 66 is positioned so as to protrude.
[0029]
18 to 20 show a circuit body manufacturing method using a wiring plate 70 and a casing plate (product) 70 corresponding to a conventional wiring device (FIG. 22) in place of the molding die.
[0030]
As shown in FIG. 18, the wiring plate 70 has a wire-shaped receiving groove 71 having a complicated shape that can correspond to various circuit patterns in place of the conventional wiring pins. The wire receiving groove 71 is formed between the plate frame portion 72 and a plurality of protrusions 73 arranged in an island shape inside thereof. An electric wire 75 is wired from the wiring nozzle 74 to the electric wire receiving groove 71. The wiring nozzle 74 has a guide plate 76 that is slidably in contact with the plate frame portion 72 and the protrusion 73 as in the previous example. The wiring is performed by moving either the guide plate 76 or the wiring plate 70 in the XY directions as indicated by arrows by NC control.
[0031]
As shown in FIG. 19, the guide plate 76 has an opening 77 curved in a trumpet shape for leading out the electric wire. The distal end portion 75a of the electric wire 75 is fixed to a start hole 78 provided in the wiring plate 70, and from there, the guide plate 76 moves to a required shape by NC control, and the electric wire 75 is wired in the receiving groove 71.
[0032]
The wiring plate may have a shape 80 as shown in FIG. This has a wire receiving groove 81 continuous in a single stroke corresponding to the molding die of the previous example. The electric wires 82 wired on the wiring plates 70 and 80 are transferred to the casing plate as in the conventional case. If a casing plate having the same shape is used in place of the wiring plates 70 and 80, the transfer of the electric wires 82 is unnecessary and the number of man-hours is reduced. By using the wiring plate or the casing plates 70 and 80, the electric wires 75 and 82 are held in the receiving grooves 71 and 81 without displacement, and the positional accuracy is ensured over the entire length of the electric wires 75 and 82.
[0033]
【The invention's effect】
As described above, according to the present invention, various types of circuit shapes having different wiring paths can be obtained by arranging the electric wires in the required circuit shape within the range of the electric wire receiving grooves having a complicated circuit pattern shape. As a result, versatility is increased, and there is no need to mold various types of bus bars and insulating substrates as in the prior art, and the cost required for the mold is reduced . In addition, since the wired wires are integrally fixed to the substrate portion by resin molding, the conventional troublesome assembly of the bus bar and the insulating substrate is not required, the number of manufacturing steps is reduced, and the process is simplified . Furthermore, since the electric wire is positioned in the electric wire receiving groove, the positional accuracy is improved over the entire length of the electric wire . And the conventional problem that the electric wire is loosened and the positional accuracy is distorted is also solved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a wiring process of a first embodiment of a circuit body manufacturing method according to the present invention.
FIG. 2 is a longitudinal sectional view showing the resin injection step.
FIG. 3 is a perspective view showing a completed first circuit body.
FIG. 4 is a longitudinal sectional view showing a process of flattening a circuit body.
FIG. 5 is a perspective view showing a completed second circuit body.
FIG. 6 is a perspective view of a state in which a cutting hole and a terminal are provided in the second circuit body.
FIG. 7 is an exploded perspective view showing upper and lower molding dies.
FIG. 8 is a perspective view showing a wiring step of a second embodiment of the circuit body manufacturing method.
FIG. 9 is a longitudinal sectional view showing a process of cutting an electric wire.
FIG. 10 is a longitudinal sectional view showing a step of injecting resin.
FIG. 11 is a perspective view showing a completed circuit body.
FIG. 12 is a longitudinal sectional view showing a third embodiment of the circuit body manufacturing method.
FIG. 13 is a longitudinal sectional view showing a state where an electric wire is cut.
FIG. 14 is a longitudinal sectional view showing a state where resin is injected.
FIG. 15 is a longitudinal sectional view showing a state in which the circuit body is detached from the mold.
FIG. 16 is a perspective view showing a method of integrally forming the connector portion.
17A is a front perspective view showing a circuit body with a connector portion, and FIG. 17B is a rear perspective view.
FIG. 18 is a perspective view showing a fourth embodiment of a circuit body manufacturing method.
FIG. 19 is a longitudinal sectional view of the main part of the same.
FIG. 20 is a perspective view showing another embodiment of the wiring plate or casing plate.
FIG. 21 is a perspective view showing an example of a conventional circuit body.
FIG. 22 is a side view showing another conventional circuit body manufacturing method.
FIG. 23 is a perspective view showing a completed circuit body.
[Explanation of symbols]
1, 5, 12, 23, 26, 37, 40, 61 Molding die 2, 22, 71, 81 Electric wire receiving groove 4, 27, 75 Electric wire 6, 13, 50, 59 Concave groove portion 8, 15 Molten resin material 9 , 16, 65 Substrate part 10 Projection part 11 Circuit body 24, 39 Die 25, 38 Punch 41 Closure pin 57 Connector housing 69 Connector molding part 70, 80 Wiring plate (casing plate)
74 Wiring nozzle

Claims (6)

一方の成形型に回路パターン形状の電線収容溝を形成し、該電線収容溝に電線を所要回路形状に布線し、該電線収容溝に対する凹溝部を有する他方の成形型を該一方の成形型に接合し、該凹溝部と該電線収容溝とに樹脂材を充填して、該凹溝部で基板部を、該電線収容溝で電線を含む突条部をそれぞれ形成して回路体を構成することを特徴とする回路体の製造方法。  An electric wire receiving groove having a circuit pattern shape is formed in one forming die, an electric wire is wired in the required electric wire shape in the electric wire receiving groove, and the other forming die having a concave groove portion with respect to the electric wire receiving groove is the one forming die. And the resin material is filled in the concave groove portion and the electric wire receiving groove, and the substrate portion is formed by the concave groove portion, and the protruding portion including the electric wire is formed by the electric wire receiving groove, thereby forming a circuit body. A method of manufacturing a circuit body. 布線ノズルの先端にガイド板を設け、該ガイド板を前記一方の成形型に摺接させつつ該布線ノズルから前記電線収容溝に前記電線を布線することを特徴とする請求項1記載の回路体の製造方法。The guide wire is provided at the tip of the wiring nozzle, and the wire is routed from the wiring nozzle to the wire receiving groove while the guide plate is in sliding contact with the one mold. Circuit body manufacturing method. 第三の成形型の凹溝部に前記突条部を収容して樹脂材を充填し、前記回路体にフラットな基板部を一体に形成することを特徴とする請求項1記載の回路体の製造方法。 2. The circuit body according to claim 1 , wherein the protruding portion is accommodated in a concave groove portion of a third mold and filled with a resin material, and a flat substrate portion is integrally formed with the circuit body. Method. 前記一方の成形型の電線収容溝の所要部に電線切断用のダイを貫設し、前記他方の成形型に、該ダイに対するパンチを突設して、両成形型の接合により電線収容溝内の電線を切断することを特徴とする請求項1記載の回路体の製造方法。 A wire cutting die is inserted through a required portion of the wire receiving groove of the one mold, and a punch for the die is protruded from the other mold. The method of manufacturing a circuit body according to claim 1, wherein the electric wire is cut . 前記ダイに進入可能な閉塞ピンを前記一方の成形型に昇降可能に設け、前記パンチを前記他方の成形型に昇降可能に設け、該パンチで電線を切断した後、該閉塞ピンと該パンチとを前記凹溝部の外側に位置させて樹脂成形することを特徴とする請求項記載の回路体の製造方法。 A closing pin capable of entering into the die is provided on the one mold so as to be movable up and down, the punch is provided on the other mold so as to be raised and lowered, and after the electric wire is cut with the punch, the closing pin and the punch are The method of manufacturing a circuit body according to claim 4, wherein the resin body is molded outside the concave groove portion . 前記他方の成形型に、前記凹溝部に続くコネクタ成形部を一体に形成して、前記基板部にコネクタハウジングを一体に形成することを特徴とする請求項1記載の回路体の製造方法。 2. The method of manufacturing a circuit body according to claim 1 , wherein a connector molding portion following the concave groove portion is integrally formed on the other molding die, and a connector housing is integrally formed on the substrate portion .
JP22649895A 1995-09-04 1995-09-04 Circuit body manufacturing method Expired - Fee Related JP3722236B2 (en)

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JP22649895A JP3722236B2 (en) 1995-09-04 1995-09-04 Circuit body manufacturing method

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JP22649895A JP3722236B2 (en) 1995-09-04 1995-09-04 Circuit body manufacturing method

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JPH0973823A JPH0973823A (en) 1997-03-18
JP3722236B2 true JP3722236B2 (en) 2005-11-30

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JP5088559B2 (en) * 2008-01-29 2012-12-05 住友電装株式会社 Electric circuit device manufacturing method, electric circuit device, and mold device

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