Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP3832809B2 - Simple electromagnetic shielding structure and manufacturing apparatus thereof - Google Patents
[go: Go Back, main page]

JP3832809B2 - Simple electromagnetic shielding structure and manufacturing apparatus thereof - Google Patents

Simple electromagnetic shielding structure and manufacturing apparatus thereof Download PDF

Info

Publication number
JP3832809B2
JP3832809B2 JP2001305240A JP2001305240A JP3832809B2 JP 3832809 B2 JP3832809 B2 JP 3832809B2 JP 2001305240 A JP2001305240 A JP 2001305240A JP 2001305240 A JP2001305240 A JP 2001305240A JP 3832809 B2 JP3832809 B2 JP 3832809B2
Authority
JP
Japan
Prior art keywords
braid
thermocompression
electromagnetic wave
wire
shield
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001305240A
Other languages
Japanese (ja)
Other versions
JP2003110277A (en
Inventor
智洋 池田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Priority to JP2001305240A priority Critical patent/JP3832809B2/en
Publication of JP2003110277A publication Critical patent/JP2003110277A/en
Application granted granted Critical
Publication of JP3832809B2 publication Critical patent/JP3832809B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Insulated Conductors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、特に電気自動車に搭載のモータの入出力端子、あるいは一般電子電気機器の入出力端子に電線・ケーブルやワイヤハーネスを接続する部分の簡易電磁波シールド構造と、その構造要部の製造装置に関する。
【0002】
【従来の技術】
近年、自動車は弱電回路や電子回路がますます増加の一途をたどっており、配索電線の大電流・高電圧化が進むなかで電磁波ノイズに弱い弱電回路を保護し、また電磁波ノイズの影響で電子回路における各種センサの検出精度を低下させないように有効かつ低コストの電磁波シールド対策が求められている。
【0003】
図13は、かかる電磁波シールド構造の従来例として実開平6−23179号公報に記載のシールドケーブル用コネクタを示す側面断面図である。円筒状の金属製シェル1内に設けた端子保持用リテーナ2に複数本のピン端子3が保持されている。シールドケーブル4は銅線などの導体5aを絶縁体5bで被覆した絶縁線心5の複数本を撚り合わせ、この撚り合わせた絶縁線心5の上から金属製の編組6を巻き付け、その上に最外層のシース7で被覆してなっている。そうしたシールドケーブル4の絶縁線心5の各端末を皮剥ぎして導体5aをピン端子3に接続している。また、ケーブル端末のシース7を皮剥処理して編組6を剥き出しにし、この編組6の裾端部の上に筒状の金属製ネット8を被せ、さらにこの金属製ネット8の上から熱収縮チューブ9を被せている。熱収縮チューブ9を加熱させてその収縮圧により金属製ネット8に上から締め込み、金属製ネット8を金属製シェル1の外周面に押し当てて接続することで、編組6から金属製シェル1に電気的に導通させて電磁波シールドする構造である。
【0004】
例えば、電気自動車に搭載されたモータの場合、その入出力端子に接続される大電流・高電圧の電源電線やケーブルなどから発生する電磁波によって外部機器への影響を防ぎ、また外部からの電磁波影響から防止するために、有効な電磁波シールド対策が求められる。
【0005】
図14は、そうしたモータの電源電線接続部における電磁波シールド構造の一例を示している。モータの外板ケースBはアルミニウムなどの金属製であり、その外板ケースBに設けた電線引き込み口bに電気コネクタを固定し、電気コネクタを介して電源電線10などを外板ケースB内部に引き込む。引き込んだ電線10端末を端子金具13によってモータ入出力端子に接続させる。この場合、外板ケースBはアース接地Gされ、電線10から発生する電磁波をグランドに落として吸収することでシールド導通を図っている。
【0006】
電線10は複数本からなっていて、束ねた上から導電性の金属素線を筒状に編んだ編組14で覆われ、その編組14の裾端部14aを電磁波シールドターミナル部材である筒状の金属製シェル15につないで接続している。両部材のつなぎは固定バンド17をかしめるなどして圧着し、編組裾端部14aを金属製シェル15の外周全周に圧接させている。金属製シェル15はそのフランジ部15aにおいてボルト16で上記外板ケースBに結合され、その外板ケースBをアース接地Gしている。したがって、電線10から発生する電磁波を、編組14→金属製シェル15→ボルト16→外板ケースB→アース接地Gの順にシールド導通経路を成立させて吸収している。
【0007】
一方、図15もまた電磁波シールド構造の一例を示している。複数の電線10は上から編組14で覆われ、電線のうちの1本がドレイン線(drain wire)として用いられる場合である。編組14の裾端部14bがそのドレイン線に沿わせるようにして細長く引き伸ばされ、引き伸ばしたその裾端部14bをかしめ金具18でドレイン線の導体11に圧着している。
【0008】
【発明が解決しようとする課題】
ところで、これら図13〜図15の各図に示す電磁波シールド構造の従来例のいずれの場合も、それぞれ次の問題点がある。
【0009】
まず、図13の構造の場合、金属製シェル1に編組6をシールド導通させるために金属製ネット8といった面倒なつなぎ部材を用い、この金属製ネット8を熱収縮チューブ9で金属製シェル1に押しつけていることである。金属製ネット8や熱収縮チューブ9はコスト的にも高価について不利である他、熱収縮チューブ9による熱収縮力だけでは金属製ネット8を金属製シェル1に押しつける力が不十分である。そのため、シールド抵抗も不安定で有効な電磁波シールドを行えず、編組6から金属製シェル1へのシールド導通に対する信頼性に欠ける。加えて、仮にも熱収縮チューブ9が破れなどの損傷を受けた場合、金属製ネット8が外れて金属製シェル1と編組6のつなぎの役割を失って電気的な不導通を引き起こし、本来の電磁波シールド機能を損なう懸念がある。
【0010】
また、図14の構造の場合、複数本の電線13を挿通させてシールド対策を図るために、勢い金属製シェル15や固定バンド17が大径サイズ化し、コスト的にも高くついて不利である。また、上記図13の従来構造で示された熱収縮チューブ9と同様、固定バンド17で編組14の裾端部14aの筒口全周を均一かつ強固に金属製シェル15の外周面に圧接させることは困難であり、接触に斑が生じて十分な電磁波シールド性能を得ることができない。
【0011】
また、図15の構造については、ドレイン線を引き出す長さ分だけ編組14の裾端部14bの一部を細長く引き伸ばし、時には数10mmから数100mmといった長さに引き伸ばす作業は非常に手間がかかって非能率であり、編組14を引き伸ばす分だけ余分な長さを見込む必要もあって、材料コストや作業コストが嵩む。また、この場合電磁波シールド対策の基本に関する点で、複数本の電線10のうちの1本だけをドレイン線としただけでは、他の電線10のすべてに対してシールド対策を完全にカバーしきれない。さらに、大事な点であるが、編組14の裾端部14bを細長く引き伸ばす際、他の裾端部の素線14cがほつれたり、ばらけるなどして電磁波シールド性能を低下させる不具合がある。したがって、編組裾端部14bの素線14cがほつれたりせず、筒口の形状を安定して定形を保つことは重要な課題である。
【0012】
以上から、本発明の目的は、特に大電流・高電圧の配索電線から発生する電磁波を遮蔽して吸収し、満足すべきシールド性能を低コスト構造で得られるようにした簡易電磁波シールド構造と、その構造要部の製造装置を提供することにある。
【0013】
【課題を解決するための手段】
上記目的を達成するために、本発明にかかる請求項1に記載の簡易電磁波シールド構造は、図1〜図3に示すように、電線端末に端子金具13を圧着した電線10を外側から導電性の素線を筒状に編んだ編組20で覆い、この編組20の筒口22に沿って熱圧着することで前記線を互いに融着結合させ、該編組20の筒口22の近傍側部を鍔状に広げて二重に重ね合わせて成形する重なり部23を設け,該重なり部23に締結ボルト45を通すボルト孔24を設け,機器側のアース接地Gされている被取付体Bに締結ボルト45を該ボルト孔24に通して該重なり部23と該被取付体Bをシールド結合したことを特徴とする。
【0014】
以上の構成から、第1実施の形態として示すように、導電性素線を筒状に編んだ編組20を締結ボルト45という簡単で安価な部品でもって、例えば電気自動車搭載のモータの外板ケースのごとき被取付体Bに強固に結合することで、信頼性のある電磁波シールド性能を得ることができる。その際、編組20の筒口22に沿って熱圧着(図2中の符号W)すると、網目を形成する導電性素線の1本1本がすべて互いにシールド導通状態に繋がり、その導通状態の繋がりは重なり部23にも及ぶ。すなわち、そうした重なり部23において上記モータ外板ケースBに金属結合することにより、編組20全体で生じた誘導電流を吸収し、グランドに落として逃がすことができる。
【0015】
また、請求項2に記載の簡易電磁波シールド構造は、前記ボルト孔24を孔縁に沿って熱圧着することで熱圧着座部24を設けたことを特徴とする。
【0016】
以上の構成から、同じく第1実施の形態を示す図2および図3において、筒口22を熱圧着して定形に整形処理した編組20は、筒口近くを二重に押し重ねるようにして重なり部23が設けられ、そこにボルト孔24が設けられ、この重なり部23は、孔縁に沿って熱圧着して孔縁周辺の素線を互いに融着結合させることによって熱圧着座部25が形成されている。
このように重なり部23にボルト孔24を開孔し、孔縁に沿って熱圧着して孔縁周辺の素線を互いに融着結合させ、熱圧着座部25を形成し、あたかも金属座金のように固まっているため、締結ボルト45をそのボルト孔24に挿通することが容易になり、組立作業をはかどらすことができる。
さらに、形成した熱圧着座部25によってすべての素線をシールド導通状態にできるため、熱圧着座部25で定形に整形されたボルト孔24によって、電気コネクタ側ハウジングを介して被取付体であるモータ外板ケースBに、締結ボルト45を用い編組20の重なり部23を結合して有効なシールド導通状態を得ることができる。
【0019】
また、請求項に記載の簡易電磁波シールド構造の製造装置は、図4〜図7に示すように、電線端末に端子金具13を圧着した電線10を外側から導電性の素線を筒状に編んだ編組20で覆い、この編組20の筒口22近くを二重に押し重ねて重なり部23を設けて、機器側のアース接地Gされている被取付体Bに前記編組20の重なり部23を締結ボルト45で結合してなっている簡易電磁波シールド構造において、前記編組20の筒口22を熱圧着して素線すべてを互いにシールド導通状態にする熱圧着プレス機構を備え、また前記編組20の重なり部23に前記締結ボルト45を挿通させるためのボルト孔24を開けるのに同期して、そのボルト孔24の孔縁に沿って熱圧着して素線すべてを互いにシールド導通状態にする熱圧着パンチンング機構を備えたことを特徴とする。
【0020】
以上の構成から、編組20の筒口22を熱圧着プレス機構にセットして加熱しつつ加圧することにより、導電性の素線が互いに融着結合してシールド導通状態となる。また、編組20の重なり部23においては、この重なり部23を熱圧着パンチング機構にセットして加熱しつつ加圧することにより、重なり部23に締結ボルト45を挿通させるためのボルト孔24を開け、それに同期的にボルト孔24の孔縁に沿って熱圧着して素線を互いに融着結合させてシールド導通状態にする。その結果、編組20の全体が万遍なくシールド導通状態となり、そうした編組20を上記モータのごとき外板ケースBに結合することで、満足すべき電磁波シールド機能が得られる。
【0021】
【発明の実施の形態】
以下、本発明にかかる簡易電磁波シールド構造と製造装置のそれぞれ実施の形態について、図面を参照して詳細に説明する。
図1は、複数本の電線10を束ねて外側から覆う要旨部材の編組20を示す平面図である。自動車の車体などに引き回して配索されてきた電線・ケーブルやワイヤハーネス(以下、便宜的に電線10と総称する)は、それらの全長にわたって上から編組20で覆われ、また例えばその編組20の上から配索個所の要所ごとに図示しないコルゲートチューブを被せて保護することができる。編組20は、本例では導電性の金属素線を筒状に編んだものであるが、ポリエステルなどの樹脂線にCu(銅)メッキ仕上げした素線をスパイラルに巻き付けたものを網目素線とし、それを筒状に編んだものも周知である。
【0022】
電線10は、銅線などの導体11上に絶縁体12を押出し被覆したものが示され、各端末の絶縁体12を皮剥処理して剥き出しにした導体11にLA端子などの端子金具13がかしめ部13aでかしめ加工して圧着されている。そうした電線端末および端子金具13は、図2および図3に使用例を示すように、電気自動車に搭載されたモータのアルミニウムなど金属製の外板ケースBを被取付体にして、これに貫通して設けた電線引き込み口bから引き込まれる。引き込んだ端子金具13をボルト孔13bでボルト(図示せず)を用いてモータ入出力端子に締結し、電気的導通を図るようになっている。その際、電線10に流れる大電流・高電圧のために電磁波の影響が他機器に及ばないよう、上記編組20と次に示す各部材で電磁波シールド処理が施される。
【0023】
従来構造の説明で述べたように、有効な電磁波シールド機能を得るには、編組20の筒口22の処理が大事な要件となる。そこで、図4および図5に示すように、上下一対からなる熱圧着ロール31,32などから構成される熱圧着プレス機構30によって、その編組筒口22を熱圧着して素線を互いに融着結合(図1中の符号W)させてシールド導通状態にする。すなわち、熱圧着ロール31,32の一方を回転駆動側にして他方側を回転従動側にし、それらに通電してジュール熱による電熱を発生させる。そうした両ロール間に筒口22を挟み込んで回転を与えつつ熱圧着する。
【0024】
さらに、そのように筒口22を熱圧着して定形に整形処理した編組20は、筒口近くを二重に押し重ねるようにして重なり部23を設け、図1に示すように、そこにボルト孔24が設けられる。その場合、重なり部23は上下一対からなる孔開けポンチとダイス的な一対の熱圧着電極36,37などから構成される熱圧着パンチング機構35によって、その編組重なり部23の一方と他方を順番にボルト孔24を開孔しつつ、それと同時的に孔縁に沿って熱圧着して孔縁周辺の素線を互いに融着結合させる。それによって形成した熱圧着座部25(図1)ですべての素線をシールド導通状態にする。すなわち、ボルト孔24はその熱圧着座部25であたかも金属座金のように固まり、締結ボルト45がそのボルト孔24に挿通させ易くなって組立作業がはかどる。それにも増して重要なことは、熱圧着座部25で定形に整形されたボルト孔24によって、次に説明する電気コネクタ側ハウジングを介して被取付体であるモータ外板ケースBに、締結ボルト45を用い編組20の重なり部23を結合して有効なシールド導通状態を得る役割が担うことができる。
【0025】
上記一方の熱圧着電極36は、高耐熱金属と導通接続金属からなる熱圧着部36aを有し、中央部に開孔用コアとしての開孔ポンチ36bが備わっている。開孔ポンチ36bはセラミックスまたは熱硬化性樹脂などの不導通耐熱材料製であり、ポンチ先端部は鋭角なテーパ部となっている。それにより、編組20の重なり部23の網目を押し広げて孔を開ける役割をする。また、他方の熱圧着電極37は、タングステンのごとき高耐熱金属による熱圧着部37aを有し、接続材料としてクロム銅のごとき銅系が設けられている。その熱圧着部37aの中央部には凹形状の逃げ孔またはネジ孔によるポンチ受け孔37bが設けてあり、相対移動時にそのポンチ受け孔37bに上記開孔ポンチ36bが係合するようになっている。
【0026】
したがって、編組20の重なり部23を挟み込んだ状態にして、それら熱圧着電極36,37を相対に移動させ、通電してジュール熱による電熱を発生させて重なり部23に開孔ポンチ36bとポンチ受け孔37bの協動でボルト孔24を開けつつその孔縁を熱圧着して、熱圧着部36a,37aで押圧して素線同士を互いに融着結合させ、ボルト孔24の孔縁に熱圧着座部25を形成してシールド導通状態に固めるものである。
【0027】
このようにして設けられた編組20のボルト孔24に締結ボルト45を挿通させ、図2および図3に示すように、被取付体としてアース接地Gされているモータ外板ケースBに結合させることができる。そのように孔縁を熱圧着したボルト孔24は座金的に作用し、電磁波シールドターミナルとして機能する。
【0028】
図2および図3は、編組20のかかる重なり部23を締結ボルト45でモータ外板ケースBの雌ネジ孔bに螺合させて共締めし、編組20→外板ケースB間のシールド導通経路を成立させる構造の分解図と組立図である。
【0029】
モータ外板ケースBへの組立は、電線端末に端子金具13を備えた電線10を外板ケースBの電線引き込み口b(図14参照)に挿通させ、端子金具13をモータ入出力端子に接続させる。その際、電気コネクタを構成する金属製カバー40および樹脂製ハウジング50と一緒に編組20を締結ボルト45で外板ケースBに共締めするようになっている。金属製カバー40は本体部41の適所にボルト孔42を有し、側板部にロック孔43を有している。また、本体部41の天板に次に説明する樹脂製ハウジング50と位置決めするための位置決め孔44が設けられている。次に、樹脂製ハウジング50は本体部51の適所に締結ボルト45が挿通する金属製カラー52を嵌着して備えている。図3で明らかなように、金属製カラー52はこの両端で、編組20の重なり部23における熱圧着座部25と外板ケースBの双方に接触して電気的導通状態に中継している部材である。したがって、この金属製カラー52も熱圧着座部25と同様に電磁波シールドターミナル機能をもつ部材ということができる。
【0030】
また、樹脂製ハウジング50は、かかる金属製カラー52の近くに上記金属製カバー40側の位置決め孔44に係合させる位置決め突起54を形成してある。本体部51の側壁には金属製カラー52側のロック孔43にほぼワンタッチで嵌合するロック凸部54を有し、金属製カバー40とほぼワンタッチで組立可能となっている。
【0031】
このように、電気コネクタを構成する金属製カバー40と樹脂製ハウジング50は、少なくとも編組20の重なり部23を内部に収容できるだけの大きさや形状であればよいから、コネクタ全体を小型化できる利点がある。
【0032】
以上の構成から、この第1実施の形態にかかる簡易電磁波シールド構造は次の作用する。電線端末の端子金具を外板ケースBに電線引き込み口からセットした状態で、図2および図3のように、編組20の筒口22に近い重なり部23で締結ボルト45により外板ケースBの雌ネジ孔b2に螺合させて直結する。その際、締結ボルト45を順番に電気コネクタの金属製カバー40、編組重なり部23のボルト孔24、そして樹脂製ハウジング50側の金属製カラー52に素通しさせ、外板ケースBの雌ネジ孔b2に螺合させる。
【0033】
その結果、実機搭載後の使用中、通電された大電流・高電圧の電線10から発生する電磁波は、編組20の重なり部23→熱圧着座部25→金属製カラー52→締結ボルト45→外板ケースB→アース接地Gというシールド導通経路で吸収される。なお、金属製カバー40もまた電磁波シールドターミナルを構成する金属シェルとして電磁波を吸収することができる。
【0034】
編組20の筒口22は、熱圧着処理がなされて金属素線による網目の1本1本のすべてが互いに電気的にシールド導通状態に繋がっている。したがって、すべての金属素線同士の繋がりによるシールド導通は重なり部23のボルト孔24に設けた熱圧着座部25にも及ぶことになる。結果、編組20のその熱圧着座部25を外板ケースBに金属結合で直結させてアース接地Gすれば、編組20全体で生じる誘導電流を吸収し、グランドに落として逃がすことができる。
【0035】
このように編組20側の熱圧着座部25と締結ボルト45という簡単で安価な部品を用いるだけで、強力かつ確実に編組20を被取付体であるモータ外板ケースBに直結することもでき、有効な電磁波シールド性能を実現できる。そうした効果や利点は、上記図13,図14,図15のいずれの従来構造と比較しても明らかである。
【0036】
なお、図1に示すように、編組20の筒口22全周にわたって熱圧着した態様が示されたが、全周にわたらずとも図8に示すように筒口22の周を断続的に熱圧着座部26を設けたり、図9に示す熱圧着座部27のように周縁から筒長方向へ適宜長さLで設けた場合も有効である。また、図示はしていないが、筒口22の周縁を袖口のごとくに外側に折り曲げてその折り曲げ部に熱圧着座部を設けてもよい。
【0037】
次に、図10は、本発明にかかる第2実施の形態の簡易電磁波シールド構造を示す分解図と組立図である。この場合、上記第1実施の形態で示された樹脂製ハウジング50に代わる部材または部分として、金属製カバー60の本体61側壁から一体にブラケット62を設け、このブラケット62に直接編組20の重なり部23を仮位置決めできるようにしている。したがって、樹脂製ハウジング50を削減できるので、コスト低下に大きく寄与でき、しかも電気コネクタ全体を小型化できるので、車体など設置スペースに厳しく制限される場合は特に有効である。
【0038】
すなわち、金属製カバー60のブラケット62に締結ボルト45を通す素孔のボルト孔63を設け、このブラケット周端の数個所に切欠加工して係止爪64,65を設け、編組20の重なり部23に背後からそれら係止爪64,65を折り曲げて圧着させて掛止保持できるようになっている。
【0039】
また、図11および図12は、直結型という考え方では、上記図10の第2実施の形態の変形例ともいうべき第3実施の形態を示す分解図と組立図である。この場合、金属製カバー70のブラケット72は締結ボルト45を通す素孔のボルト孔73を有し、ブラケット周縁の数個所に係止爪74を設けて、これら係止爪74を編組20の重なり部23の数個所に引っかけて保持する構造である。
【0040】
これら第2実施の形態を示す図10、第3実施の形態を示す図11および図12において、他の部材は上記第1実施の形態で示された部材や部分と共通しており、同一符号を付して省略する。
【0041】
【発明の効果】
以上説明したように、本発明にかかる請求項1に記載の簡易電磁波シールド構造は、導電性素線を筒状に編んだ編組を締結ボルトという簡単で安価な部品でもって、例えば電気自動車搭載のモータの外板ケースのごとき被取付体に強固に結合することで、信頼性のある電磁波シールド性能を得ることができる。その際、編組の筒口に沿って熱圧着することで網目を形成する導電性素線の1本1本がすべて互いにシールド導通状態に繋がり、その導通状態の繋がりは重なり部にも及び外板ケースなどに金属結合させて、編組全体で生じた誘導電流を吸収し、グランドに落として逃がすことができる。
【0042】
また、請求項2に記載の簡易電磁波シールド構造は、重なり部23に熱圧着座部25を形成し、あたかも金属座金のように固めてあるため、締結ボルト45をそのボルト孔24に挿通することが容易になり、組立作業がはかどるという利点がある。
【0044】
一方、本発明にかかる請求項に記載の簡易電磁波シールド構造の製造装置は、編組の筒口を熱圧着プレス機構にセットして加熱しつつ加圧することにより、導電性の素線が互いに融着結合してシールド導通状態となり、また編組の重なり部では、熱圧着パンチング機構にセットして加熱しつつ加圧することにより、重なり部に締結ボルトを挿通させるためのボルト孔を開けつつ、そのボルト孔の孔縁に沿って熱圧着して素線を互いに融着結合させてシールド導通状態にする結果、編組の全体が万遍なくシールド導通状態となり、そうした編組をモータ外板ケースなどに結合すれば、満足すべき電磁波シールド機能が得られる。
【図面の簡単な説明】
【図1】本発明にかかる簡易電磁波シールド構造の要旨部材である編組で電線を覆った状態を示す平面図である。
【図2】第1実施の形態にかかる構造を被取付体であるモータ外板ケースに結合する場合を示す分解斜視図である。
【図3】同第1実施の形態の組立断面図である。
【図4】本発明にかかる熱圧着プレス装置を示す斜視図である。
【図5】同装置において熱圧着状態を示す正面図である。
【図6】本発明にかかる熱圧着パンチング装置を示す斜視図である。
【図7】同装置においてボルト孔開孔と熱圧着状態を示す組立断面図である。
【図8】要旨部材である編組の熱圧着部の別態様を示す斜視図である。
【図9】同編組の熱圧着部の別態様を示す斜視図である。
【図10】第2実施の形態にかかる構造を被取付体であるモータ外板ケースに結合する場合を示す分解斜視図である。
【図11】第3実施の形態にかかる構造を被取付体であるモータ外板ケースに結合する場合を要部拡大して示す斜視図である。
【図12】同第3実施の形態の組立断面図である。
【図13】電磁波シールド構造に関する従来構造の一例を示す組立側面断面図である。
【図14】他の電磁波シールド構造に関する従来構造の一例を示す組立側面断面図である。
【図15】他の電磁波シールド構造に関する従来構造の一例を示す組立側面断面図である。
【符号の説明】
10 電線
11 導体
12 絶縁体
13 端子金具
20 編組
21 編組本体
22 筒口
23 重なり部
24 ボルト孔
25 熱圧着座部
26,27 熱圧着座部
30 熱圧着プレス機構
31,32 熱圧着ロール
35 熱圧着パンチング機構
36,37 熱圧着電極
40,60,70 金属製カバー(電気コネクタ)
45 締結ボルト
50 樹脂製ハウジング(電気コネクタ)
52 金属製カラー
53 編組の位置決め突起
62,72 ブラケット
63,73 ボルト孔
64,75,74 係止爪
B モータの外板ケース(被取付体)
電線引き込み口
ボルト螺合用の雌ネジ孔
[0001]
BACKGROUND OF THE INVENTION
The present invention particularly relates to a simple electromagnetic shielding structure for connecting a wire / cable or a wire harness to an input / output terminal of a motor mounted on an electric vehicle or an input / output terminal of a general electronic / electrical device, and an apparatus for manufacturing the main part of the structure About.
[0002]
[Prior art]
In recent years, the number of weak electric circuits and electronic circuits has been increasing in recent years, and as the wiring cables have increased in current and voltage, the weak electric circuits that are vulnerable to electromagnetic noise have been protected. There is a need for an effective and low-cost electromagnetic shielding measure so as not to lower the detection accuracy of various sensors in an electronic circuit.
[0003]
FIG. 13 is a side sectional view showing a shielded cable connector described in Japanese Utility Model Laid-Open No. 6-23179 as a conventional example of such an electromagnetic wave shielding structure. A plurality of pin terminals 3 are held by a terminal holding retainer 2 provided in a cylindrical metal shell 1. The shielded cable 4 is formed by twisting a plurality of insulated wire cores 5 in which a conductor 5a such as a copper wire is covered with an insulator 5b, winding a metal braid 6 over the twisted insulated wire cores 5, and then winding the wire 6 on the twisted insulated wire cores 5. The outermost sheath 7 is covered. Each end of the insulation core 5 of the shielded cable 4 is peeled off to connect the conductor 5a to the pin terminal 3. Further, the sheath 7 of the cable end is peeled off to expose the braid 6, and a cylindrical metal net 8 is covered on the hem end portion of the braid 6, and the heat-shrinkable tube is applied from above the metal net 8. 9 is covered. The heat-shrinkable tube 9 is heated and tightened to the metal net 8 from above by the contraction pressure, and the metal net 8 is pressed against the outer peripheral surface of the metal shell 1 to be connected. In this structure, the electromagnetic wave is shielded by electrical conduction.
[0004]
For example, in the case of a motor mounted on an electric vehicle, the electromagnetic waves generated from the high-current / high-voltage power lines and cables connected to the input / output terminals prevent the influence on external devices, and the influence of external electromagnetic waves Therefore, effective countermeasures against electromagnetic wave shielding are required.
[0005]
FIG. 14 shows an example of an electromagnetic wave shielding structure in the power supply wire connecting portion of such a motor. The outer plate case B of the motor is made of metal such as aluminum, and an electric connector is fixed to the electric wire inlet b 1 provided in the outer plate case B, and the power supply wire 10 is connected to the inner portion of the outer plate case B through the electric connector. Pull in. The drawn wire 10 terminal is connected to the motor input / output terminal by the terminal fitting 13. In this case, the outer case B is grounded G, and the electromagnetic wave generated from the electric wire 10 is dropped to the ground and absorbed to achieve shield conduction.
[0006]
The electric wire 10 is composed of a plurality of wires, and is covered with a braid 14 in which conductive metal strands are knitted into a cylindrical shape from the bundle, and a hem end portion 14a of the braid 14 is formed into a cylindrical shape that is an electromagnetic shielding terminal member. The metal shell 15 is connected and connected. The joint between the two members is crimped by, for example, caulking the fixing band 17, and the braided hem end portion 14 a is pressed against the entire outer periphery of the metal shell 15. The metal shell 15 is coupled to the outer plate case B by a bolt 16 at the flange portion 15a, and the outer plate case B is grounded G. Therefore, the electromagnetic wave generated from the electric wire 10 is absorbed by establishing a shield conduction path in the order of the braid 14 → the metal shell 15 → the bolt 16 → the outer plate case B → the earth ground G.
[0007]
On the other hand, FIG. 15 also shows an example of the electromagnetic shielding structure. The plurality of electric wires 10 are covered with a braid 14 from above, and one of the electric wires is used as a drain wire. The bottom end portion 14b of the braid 14 is elongated so as to be along the drain line, and the extended bottom end portion 14b is crimped to the conductor 11 of the drain line by a caulking fitting 18.
[0008]
[Problems to be solved by the invention]
Incidentally, each of the conventional examples of the electromagnetic wave shield structure shown in each of FIGS. 13 to 15 has the following problems.
[0009]
First, in the case of the structure shown in FIG. 13, a troublesome connecting member such as a metal net 8 is used to shield the braid 6 from the metal shell 1, and the metal net 8 is attached to the metal shell 1 by a heat shrinkable tube 9. It is pressing. The metal net 8 and the heat-shrinkable tube 9 are disadvantageous in terms of cost, and the force for pressing the metal net 8 against the metal shell 1 is insufficient only by the heat-shrinking force of the heat-shrinkable tube 9. For this reason, the shield resistance is unstable and effective electromagnetic wave shielding cannot be performed, and the reliability of shield conduction from the braid 6 to the metal shell 1 is lacking. In addition, if the heat-shrinkable tube 9 is damaged such as torn, the metal net 8 comes off and loses the role of connecting the metal shell 1 and the braid 6 to cause electrical discontinuity. There is a concern of impairing the electromagnetic shielding function.
[0010]
In the case of the structure shown in FIG. 14, in order to insert a plurality of electric wires 13 and to take measures against shielding, the vigorous metal shell 15 and the fixing band 17 are increased in diameter and disadvantageous in terms of cost. Similarly to the heat-shrinkable tube 9 shown in the conventional structure of FIG. 13, the entire circumference of the cylindrical opening of the hem end 14 a of the braid 14 is pressed against the outer peripheral surface of the metal shell 15 with the fixing band 17 uniformly and firmly. Is difficult, and unevenness occurs in contact, and sufficient electromagnetic wave shielding performance cannot be obtained.
[0011]
Further, in the structure of FIG. 15, a part of the hem end portion 14b of the braid 14 is elongated by the length to draw out the drain wire, and sometimes it is very troublesome to extend the length to several tens to several hundreds of millimeters. It is inefficient and it is necessary to allow for an extra length as long as the braid 14 is stretched, which increases material costs and work costs. Further, in this case, in terms of the basics of electromagnetic wave shielding measures, the shielding measures cannot be completely covered for all the other electric wires 10 by using only one of the plurality of electric wires 10 as a drain wire. . Furthermore, as an important point, when the hem end portion 14b of the braid 14 is elongated, there is a problem that the wire 14c at the other hem end portion frays or breaks down to deteriorate the electromagnetic shielding performance. Therefore, it is an important problem that the wire 14c of the braided hem end portion 14b is not frayed, and that the shape of the tube opening is stably maintained in a fixed shape.
[0012]
From the above, the object of the present invention is to provide a simple electromagnetic wave shielding structure that shields and absorbs electromagnetic waves generated from a high-current / high-voltage wiring, in particular, and obtains satisfactory shielding performance with a low-cost structure. An object of the present invention is to provide an apparatus for manufacturing the main part of the structure.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the simplified electromagnetic wave shield structure according to claim 1 of the present invention is electrically conductive from the outside, as shown in FIGS. strands covered with braid 20 braided in a tubular shape, along the snout 22 of the braided 20 to each other fusion bond the element wires by thermocompression bonding, flange near side of snout 22 of the braid 20 spread the Jo provided overlapping portions 23 for molding superimposed double, the bolt holes 24 through which fastening bolts 45 to the polymerization becomes 23 set only, to the attached body B which is grounded G of the machine-side The fastening bolt 45 is passed through the bolt hole 24 and the overlapping portion 23 and the attached body B are shield- coupled.
[0014]
From the above configuration, as shown in the first embodiment, a braid 20 in which conductive strands are knitted into a cylindrical shape is used as a fastening bolt 45, which is a simple and inexpensive component, for example, an outer plate case of a motor mounted on an electric vehicle. Reliable electromagnetic wave shielding performance can be obtained by firmly bonding to the attachment body B such as the above. At that time, when thermocompression bonding (symbol W in FIG. 2) is performed along the tube port 22 of the braid 20, all of the conductive wires forming the mesh are connected to each other in a shield conductive state, and the conductive state is connected. Extends to the overlap 23. That is, by metal-bonding to the motor outer plate case B at the overlapping portion 23, the induced current generated in the entire braid 20 can be absorbed and dropped to the ground to be released.
[0015]
The simplified electromagnetic shielding structure according to claim 2 is characterized in that a thermocompression seat portion 24 is provided by thermocompression bonding of the bolt hole 24 along the hole edge .
[0016]
2 and 3, which similarly show the first embodiment, the braid 20 obtained by thermocompression bonding the cylindrical port 22 to a fixed shape is overlapped so as to double-push the vicinity of the cylindrical port. The bolt hole 24 is provided there, and the overlapping portion 23 is formed by thermocompression bonding along the hole edge to bond the strands around the hole edge to each other to form a thermocompression seat 25. ing.
In this way, the bolt hole 24 is opened in the overlapping portion 23, and thermocompression bonding is performed along the hole edge to fuse and bond the strands around the hole edge to form a thermocompression seat portion 25, as if the metal washer. Therefore, it is easy to insert the fastening bolt 45 into the bolt hole 24, and the assembly work can be accelerated.
Furthermore, since all the strands can be brought into a shield conduction state by the formed thermocompression seat portion 25, the bolt hole 24 shaped into a fixed shape by the thermocompression seat portion 25 is an attached body via the electrical connector side housing. An effective shield conduction state can be obtained by coupling the overlapping portion 23 of the braid 20 to the motor outer plate case B using the fastening bolt 45.
[0019]
Moreover, as shown in FIGS. 4-7, the manufacturing apparatus of the simple electromagnetic wave shield structure of Claim 3 makes the electric wire 10 which crimped | bonded the terminal metal fitting 13 to the electric wire terminal from the outer side, and makes a conductive strand cylindrical. Covering with the braided braid 20, the overlapping part 23 is provided by overlappingly pushing and overlapping the vicinity of the tube port 22 of the braid 20, and the overlapping part 23 of the braid 20 is attached to the body B to be grounded G on the equipment side. In the simple electromagnetic wave shield structure connected by the fastening bolt 45, a thermocompression pressing mechanism is provided that thermocompresses the tube port 22 of the braid 20 so that all the strands are in a shield conduction state, and the braid 20 overlaps. said synchronizes fastening bolt 45 to open the bolt hole 24 for inserting the section 23, the thermocompression bonding pan to shield conductive state all wires and thermocompression bonding along the hole edge of the bolt hole 24 to each other Characterized by comprising a N'ngu mechanism.
[0020]
From the above configuration, by setting the tube port 22 of the braid 20 to the thermocompression press mechanism and applying pressure while heating, the conductive strands are fused and bonded to each other to enter a shield conduction state. Further, in the overlapping portion 23 of the braid 20, the overlapping portion 23 is set in a thermocompression punching mechanism and is pressurized while being heated, thereby opening a bolt hole 24 for inserting the fastening bolt 45 into the overlapping portion 23, In synchronism with this, thermocompression bonding is performed along the hole edge of the bolt hole 24 so that the strands are fusion-bonded to each other to be in a shield conduction state. As a result, the entire braid 20 is uniformly in a shield conduction state, and a satisfactory electromagnetic wave shielding function can be obtained by coupling the braid 20 to the outer plate case B such as the motor.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a simple electromagnetic shielding structure and a manufacturing apparatus according to the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a plan view illustrating a braid 20 of a gist member that bundles a plurality of electric wires 10 and covers them from the outside. Electric wires / cables and wire harnesses (hereinafter collectively referred to as electric wires 10) that are routed around an automobile body or the like are covered with a braid 20 from above over the entire length thereof. A corrugated tube (not shown) can be covered and protected at each important point of the routing point from above. In this example, the braid 20 is formed by knitting a conductive metal strand into a cylindrical shape. However, a mesh wire is formed by winding a strand of copper (copper) -plated strands of resin wire such as polyester around a spiral. Also known is a knitted tube.
[0022]
The electric wire 10 is shown by extruding and covering an insulator 12 on a conductor 11 such as a copper wire, and a terminal metal fitting 13 such as an LA terminal is caulked on the conductor 11 exposed by peeling off the insulator 12 at each end. It crimps and crimps | bonds by the part 13a. As shown in FIGS. 2 and 3, the electric wire terminal and the terminal fitting 13 penetrate the metal outer plate case B such as aluminum of a motor mounted on an electric vehicle as an attachment body. It is drawn from the wire gland b 1 provided Te. The pulled-in terminal fitting 13 is fastened to the motor input / output terminal by using a bolt (not shown) in the bolt hole 13b to achieve electrical conduction. At that time, the braid 20 and the following members are subjected to electromagnetic wave shielding treatment so that the influence of electromagnetic waves does not reach other devices due to the large current and high voltage flowing through the electric wire 10.
[0023]
As described in the description of the conventional structure, processing of the tube port 22 of the braid 20 is an important requirement in order to obtain an effective electromagnetic wave shielding function. Therefore, as shown in FIGS. 4 and 5, the braided cylinder port 22 is thermocompression bonded by the thermocompression press mechanism 30 composed of a pair of upper and lower thermocompression bonding rolls 31 and 32, and the strands are fusion bonded. (Symbol W in FIG. 1) to make the shield conductive state. That is, one of the thermocompression-bonding rolls 31 and 32 is set as the rotational drive side and the other side is set as the rotational driven side, and electricity is supplied to them to generate electric heat by Joule heat. The cylinder port 22 is sandwiched between the two rolls and thermocompression bonded while giving rotation.
[0024]
Furthermore, the braid 20 that has been shaped into a fixed shape by thermocompression bonding of the tube opening 22 is provided with an overlapping portion 23 so as to double-push the vicinity of the tube opening, and as shown in FIG. Is provided. In that case, the overlapping portion 23 is formed by sequentially forming one and the other of the braided overlapping portion 23 by a thermocompression punching mechanism 35 including a pair of upper and lower perforated punches and a pair of die-like thermocompression bonding electrodes 36 and 37. While the bolt hole 24 is being opened, the wires around the hole edge are fused and bonded together by thermocompression bonding along the hole edge. All the strands are brought into a shield conduction state by the thermocompression seat 25 (FIG. 1) formed thereby. That is, the bolt hole 24 is solidified as if it was a metal washer at the thermocompression-bonding seat portion 25, and the fastening bolt 45 can be easily inserted into the bolt hole 24, thus facilitating the assembly work. What is more important than that is that a bolt hole 24 shaped into a fixed shape by the thermocompression-bonding seat portion 25 allows a fastening bolt to be attached to the motor outer plate case B, which is a mounted body, through an electric connector side housing described below. 45 can be used to combine the overlapping portions 23 of the braid 20 to obtain an effective shield conduction state.
[0025]
The one thermocompression bonding electrode 36 has a thermocompression bonding part 36a made of a high heat-resistant metal and a conductive connection metal, and an opening punch 36b as an opening core is provided at the center. The hole punch 36b is made of a non-conductive heat-resistant material such as ceramics or a thermosetting resin, and the punch tip has a sharp tapered portion. Accordingly, the mesh of the overlapping portion 23 of the braid 20 is expanded to open a hole. The other thermocompression bonding electrode 37 has a thermocompression bonding portion 37a made of a high heat-resistant metal such as tungsten, and a copper-based material such as chromium copper is provided as a connection material. A punch receiving hole 37b is formed in the center of the thermocompression bonding part 37a by a concave escape hole or screw hole, and the opening punch 36b is engaged with the punch receiving hole 37b during relative movement. Yes.
[0026]
Therefore, with the overlapping portion 23 of the braid 20 being sandwiched, the thermocompression bonding electrodes 36 and 37 are moved relative to each other to generate electric heat due to Joule heat so that an opening punch 36b and a punch receiving member are received in the overlapping portion 23. The hole edge is thermocompression-bonded while the bolt hole 24 is opened by the cooperation of the hole 37b, and the wires are fused and bonded to each other by thermocompression bonding portions 36a and 37a. The seat portion 25 is formed and solidified in a shield conduction state.
[0027]
The fastening bolt 45 is inserted into the bolt hole 24 of the braid 20 provided in this way, and as shown in FIG. 2 and FIG. Can do. The bolt hole 24 in which the hole edge is thermocompression bonded in this way acts as a washer and functions as an electromagnetic wave shield terminal.
[0028]
2 and 3, and such overlapping portion 23 of the braid 20 is screwed into the female screw hole b 2 of the motor shell casing B by fastening bolts 45 and tightened, shield continuity between the braid 20 → outer plate casing B It is the exploded view and assembly drawing of the structure which establish a path | route.
[0029]
The assembly to the motor outer case B is performed by inserting the electric wire 10 having the terminal fitting 13 at the electric wire end into the electric wire inlet b 1 (see FIG. 14) of the outer case B and using the terminal fitting 13 as the motor input / output terminal. Connect. At this time, the braid 20 is fastened to the outer case B together with the fastening bolt 45 together with the metal cover 40 and the resin housing 50 constituting the electrical connector. The metal cover 40 has a bolt hole 42 at an appropriate position of the main body 41 and a lock hole 43 in the side plate. The top plate of the main body 41 is provided with a positioning hole 44 for positioning with a resin housing 50 described below. Next, the resin housing 50 is provided with a metal collar 52 into which the fastening bolt 45 is inserted at an appropriate position of the main body 51. As is apparent from FIG. 3, the metal collar 52 is a member that is in contact with both the thermocompression-bonding seat portion 25 and the outer case B in the overlapping portion 23 of the braid 20 at both ends and relays them to an electrically conductive state. It is. Therefore, it can be said that this metal collar 52 is also a member having an electromagnetic wave shield terminal function, similar to the thermocompression seat 25.
[0030]
The resin housing 50 is formed with a positioning projection 54 that is engaged with the positioning hole 44 on the metal cover 40 side near the metal collar 52. On the side wall of the main body 51, there is a lock projection 54 that fits into the lock hole 43 on the metal collar 52 side with almost one touch, and can be assembled with the metal cover 40 with almost one touch.
[0031]
As described above, the metal cover 40 and the resin housing 50 constituting the electrical connector need only have a size and a shape that can accommodate at least the overlapping portion 23 of the braid 20 in the interior, and thus there is an advantage that the entire connector can be reduced in size. is there.
[0032]
From the above configuration, the simple electromagnetic wave shielding structure according to the first embodiment operates as follows. In a state where the terminal fitting of the electric wire terminal is set in the outer plate case B from the electric wire lead-in port, the female member of the outer plate case B is fastened by the fastening bolt 45 at the overlapping portion 23 near the cylindrical port 22 of the braid 20 as shown in FIGS. Directly coupled by screwing into the screw hole b2. At that time, the fastening bolts 45 are sequentially passed through the metal cover 40 of the electrical connector, the bolt holes 24 of the braided overlapping portion 23, and the metal collar 52 on the resin housing 50 side, and the female screw hole b2 of the outer case B Screwed on.
[0033]
As a result, the electromagnetic waves generated from the energized high-current / high-voltage electric wire 10 during use after mounting on the actual machine are the overlapping portion 23 of the braid 20 → the thermocompression seat portion 25 → the metal collar 52 → the fastening bolt 45 → the outside. It is absorbed by the shield conduction path of plate case B → earth ground G. The metal cover 40 can also absorb electromagnetic waves as a metal shell constituting the electromagnetic wave shield terminal.
[0034]
The tube port 22 of the braid 20 is thermocompression-bonded so that all of the meshes of metal strands are electrically connected to each other in a shield conduction state. Accordingly, the shield conduction due to the connection between all the metal wires extends to the thermocompression seat 25 provided in the bolt hole 24 of the overlapping portion 23. As a result, if the thermocompression seat 25 of the braid 20 is directly connected to the outer case B by metal bonding and grounded G, the induced current generated in the entire braid 20 can be absorbed and dropped to the ground for escape.
[0035]
In this way, the braid 20 can be directly and securely connected to the motor outer case B, which is a mounted body, by using simple and inexpensive parts such as the thermocompression seat 25 and the fastening bolt 45 on the braid 20 side. Effective electromagnetic shielding performance can be realized. Such effects and advantages are clear even when compared with any of the conventional structures shown in FIGS.
[0036]
In addition, as shown in FIG. 1, although the aspect which carried out the thermocompression bonding over the cylinder port 22 whole periphery of the braid 20 was shown, as shown in FIG. It is also effective to provide the portion 26 or to provide the length L from the periphery to the tube length direction as appropriate as in the thermocompression seat 27 shown in FIG. Although not shown, the peripheral edge of the tube opening 22 may be bent to the outside of the cuff and a thermocompression seat may be provided at the bent portion.
[0037]
Next, FIG. 10 is an exploded view and an assembly view showing a simple electromagnetic wave shielding structure of the second embodiment according to the present invention. In this case, a bracket 62 is integrally provided from the side wall of the main body 61 of the metal cover 60 as a member or part instead of the resin housing 50 shown in the first embodiment, and the overlapping portion of the braid 20 is directly attached to the bracket 62. 23 can be temporarily positioned. Therefore, since the resin housing 50 can be reduced, the cost can be greatly reduced, and the entire electrical connector can be miniaturized. This is particularly effective when the installation space is severely limited.
[0038]
That is, a bolt hole 63 of a bare hole through which the fastening bolt 45 is passed is provided in the bracket 62 of the metal cover 60, and the locking claws 64, 65 are provided at several locations on the peripheral edge of the bracket, and the overlapping portion of the braid 20 The latching claws 64 and 65 are bent and pressed from the rear to the hook 23 and can be held.
[0039]
FIG. 11 and FIG. 12 are an exploded view and an assembled view showing a third embodiment that should be called a modification of the second embodiment of FIG. In this case, the bracket 72 of the metal cover 70 has a bolt hole 73 that is a through hole through which the fastening bolt 45 is passed, and locking claws 74 are provided at several positions on the periphery of the bracket, and these locking claws 74 overlap the braid 20. It is a structure in which it is hooked and held at several points of the portion 23.
[0040]
In FIG. 10 showing the second embodiment, FIG. 11 and FIG. 12 showing the third embodiment, the other members are common to the members and parts shown in the first embodiment, and the same reference numerals are used. Is omitted.
[0041]
【The invention's effect】
As described above, the simple electromagnetic wave shield structure according to claim 1 of the present invention is a simple and inexpensive part called a fastening bolt made of a braided braided conductive wire, for example, mounted on an electric vehicle. Reliable electromagnetic wave shielding performance can be obtained by firmly coupling to an attached body such as a motor outer case. At that time, all of the conductive wires forming the mesh by thermocompression bonding along the braided cylinder mouth are connected to each other in the shield conductive state, and the connection in the conductive state also extends to the overlapping portion and the outer case. Inductive current generated in the entire braid can be absorbed and dropped to the ground to escape.
[0042]
Further, in the simple electromagnetic wave shield structure according to claim 2, the thermocompression-bonding seat portion 25 is formed in the overlapping portion 23 and is hardened like a metal washer, so that the fastening bolt 45 is inserted into the bolt hole 24. There is an advantage that the assembling work is accelerated .
[0044]
On the other hand, in the manufacturing apparatus of the simple electromagnetic wave shield structure according to claim 3 of the present invention, the conductive strands are fused to each other by setting the braided tube opening in the thermocompression press mechanism and applying pressure while heating. In the overlapped part of the braid, it is set in a thermocompression punching mechanism and heated and pressurized to open a bolt hole for inserting a fastening bolt into the overlapped part, and the bolt hole As a result of the thermocompression bonding along the hole edge of the wire and the wires are fused and bonded to each other so that the shield is in a conductive state, the entire braid is uniformly in a shield conductive state, and if such a braid is connected to a motor skin case, etc. A satisfactory electromagnetic shielding function can be obtained.
[Brief description of the drawings]
FIG. 1 is a plan view showing a state in which an electric wire is covered with a braid which is a gist member of a simple electromagnetic wave shielding structure according to the present invention.
FIG. 2 is an exploded perspective view showing a case where the structure according to the first embodiment is coupled to a motor outer plate case which is a mounted body.
FIG. 3 is an assembly cross-sectional view of the first embodiment.
FIG. 4 is a perspective view showing a thermocompression pressing apparatus according to the present invention.
FIG. 5 is a front view showing a thermocompression bonding state in the apparatus.
FIG. 6 is a perspective view showing a thermocompression punching device according to the present invention.
FIG. 7 is an assembly cross-sectional view showing a bolt hole opening and a thermocompression bonding state in the apparatus.
FIG. 8 is a perspective view showing another embodiment of a thermocompression bonding portion of a braid that is a gist member.
FIG. 9 is a perspective view showing another aspect of the thermocompression bonding portion of the braid.
FIG. 10 is an exploded perspective view showing a case where the structure according to the second embodiment is coupled to a motor outer plate case which is a mounted body.
FIG. 11 is an enlarged perspective view showing a main part when a structure according to a third embodiment is coupled to a motor outer plate case which is a mounted body.
FIG. 12 is an assembled cross-sectional view of the third embodiment.
FIG. 13 is an assembled side sectional view showing an example of a conventional structure related to an electromagnetic wave shielding structure.
FIG. 14 is an assembled side cross-sectional view showing an example of a conventional structure relating to another electromagnetic wave shielding structure.
FIG. 15 is an assembled side cross-sectional view showing an example of a conventional structure relating to another electromagnetic wave shielding structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Electric wire 11 Conductor 12 Insulator 13 Terminal metal fitting 20 Braid 21 Braid main body 22 Tube port 23 Overlapping part 24 Bolt hole 25 Thermocompression seat part 26,27 Thermocompression seat part 30 Thermocompression press mechanism 31,32 Thermocompression roll 35 Thermocompression punching Mechanisms 36, 37 Thermocompression bonding electrodes 40, 60, 70 Metal covers (electrical connectors)
45 Fastening bolt 50 Resin housing (electrical connector)
52 Metal collar 53 Braided positioning projections 62, 72 Brackets 63, 73 Bolt holes 64, 75, 74 Locking claws B Motor outer case (attachment)
b 1 wire inlet b 2 female screw hole for bolting

Claims (3)

電線端末に端子金具を圧着した電線を外側から導電性の素線を筒状に編んだ編組で覆い、この編組の筒口に沿って熱圧着することで前記線を互いに融着結合させ、該編組の筒口の近傍側部を鍔状に広げて二重に重ね合わせて成形する重なり部を設け,該重なり部に締結ボルトを通すボルト孔を設け,機器側のアース接地されている被取付体に締結ボルトを該ボルト孔に通して該重なり部と該被取付体をシールド結合したことを特徴とする簡易電磁波シールド構造。Covering the electric wire crimping terminal fittings to the wire terminal at knitted braided conductive wire from the outside into the cylindrical, fused bond together said element wires by thermocompression bonding along snout of the braid, the the overlapping portion of molded superimposed near side of snout braided doubly spread like a collar provided, only set a bolt hole into which a fastening bolt to the polymerization becomes part, the are grounded in equipment side A simple electromagnetic wave shielding structure , wherein a fastening bolt is passed through the bolt hole through an attachment body, and the overlapped portion and the attachment body are shield- coupled. 前記ボルト孔を孔縁に沿って熱圧着することで熱圧着座部を設けたことを特徴とする請求項1に記載の簡易電磁波シールド構造。The simple electromagnetic wave shielding structure according to claim 1, wherein a thermocompression seat is provided by thermocompression bonding the bolt hole along a hole edge . 電線端末に端子金具を圧着した電線を外側から導電性の素線を筒状に編んだ編組で覆い、この編組の筒口近くを二重に押し重ねて重なり部を設けて、機器側のアース接地されている被取付体に前記編組の重なり部を締結ボルトで結合してなっている簡易電磁波シールド構造の製造装置であって,
前記編組の筒口を熱圧着して素線すべてを互いにシールド導通状態にする熱圧着プレス機構を備え、また前記編組の重なり部に前記締結ボルトを挿通させるためのボルト孔を開けるのに同期して、そのボルト孔の孔縁に沿って熱圧着して素線すべてを互いにシールド導通状態にする熱圧着パンチング機構を備えたことを特徴とする簡易電磁波シールド構造の製造装置。
Cover the wire with the terminal fittings crimped to the end of the wire with a braided braid of conductive strands from the outside, and double-push the vicinity of the tube mouth of this braid to provide an overlapping part to ground the equipment side An apparatus for manufacturing a simple electromagnetic wave shield structure in which an overlapping portion of the braid is joined to a mounted body by a fastening bolt,
It is equipped with a thermocompression press mechanism that thermocompresses the tube opening of the braid to bring all of the strands into a shield conductive state, and in synchronism with opening a bolt hole for inserting the fastening bolt into the overlapping portion of the braid An apparatus for manufacturing a simple electromagnetic wave shield structure, comprising a thermocompression punching mechanism that thermocompresses along the hole edge of the bolt hole to bring all the strands into a shield conductive state .
JP2001305240A 2001-10-01 2001-10-01 Simple electromagnetic shielding structure and manufacturing apparatus thereof Expired - Fee Related JP3832809B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001305240A JP3832809B2 (en) 2001-10-01 2001-10-01 Simple electromagnetic shielding structure and manufacturing apparatus thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001305240A JP3832809B2 (en) 2001-10-01 2001-10-01 Simple electromagnetic shielding structure and manufacturing apparatus thereof

Publications (2)

Publication Number Publication Date
JP2003110277A JP2003110277A (en) 2003-04-11
JP3832809B2 true JP3832809B2 (en) 2006-10-11

Family

ID=19125057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001305240A Expired - Fee Related JP3832809B2 (en) 2001-10-01 2001-10-01 Simple electromagnetic shielding structure and manufacturing apparatus thereof

Country Status (1)

Country Link
JP (1) JP3832809B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220216651A1 (en) * 2019-05-13 2022-07-07 Autonetworks Technologies, Ltd. Connector

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6024036B2 (en) * 2012-07-09 2016-11-09 矢崎総業株式会社 Wire shield structure
CN105229861A (en) * 2013-05-21 2016-01-06 矢崎总业株式会社 The syndeton of terminal metal accessory
JP6051105B2 (en) * 2013-05-31 2016-12-27 ダイキョーニシカワ株式会社 Electromagnetic shielding container
JP6582649B2 (en) * 2015-07-10 2019-10-02 株式会社オートネットワーク技術研究所 Shield structure
KR101877210B1 (en) * 2016-12-12 2018-07-12 엘에스산전 주식회사 Structure of cable lug and holder
CN107611745A (en) * 2017-09-07 2018-01-19 长沙金诺自动化技术有限公司 A kind of radio frequency co-axial cable subassembly assembling reason braiding device
CN112798131B (en) * 2020-12-30 2024-05-07 肇庆爱晟传感器技术有限公司 Soft flat cable multipoint measurement integrated temperature sensor and preparation thereof
JP7558846B2 (en) * 2021-03-08 2024-10-01 古河電気工業株式会社 Ground structure and wire harness
JP2024043141A (en) * 2022-09-16 2024-03-29 住友電装株式会社 wire harness

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220216651A1 (en) * 2019-05-13 2022-07-07 Autonetworks Technologies, Ltd. Connector
US11955751B2 (en) * 2019-05-13 2024-04-09 Autonetworks Technologies, Ltd. Connector

Also Published As

Publication number Publication date
JP2003110277A (en) 2003-04-11

Similar Documents

Publication Publication Date Title
US6781059B2 (en) Shielded wire
JP3786594B2 (en) Electromagnetic shield braid
JP3966407B2 (en) Electromagnetic wave shield structure with oil-proof water
JP3877139B2 (en) Electromagnetic wave shield structure with waterproofness
US2798113A (en) Shield connectors
JP2002324627A (en) Electromagnetic wave shield structure
US20110168423A1 (en) Shielded wire-grounding construction
CN100386919C (en) Connection structure between dissimilar electric wires
CN111210927B (en) Conductive member
JP3832809B2 (en) Simple electromagnetic shielding structure and manufacturing apparatus thereof
JP2002289307A (en) Electromagnetic wave shield structure
EP1037327A1 (en) Grounding construction and a method for manufacturing a grounding construction for a plurality of shielded cables
JP3394175B2 (en) Termination treatment structure and termination treatment method for shielded wires
JP5136259B2 (en) Protector for wire harness
JP3901855B2 (en) Shield terminal
JP2005093198A (en) Grounding structure of shielded wire
JP3883105B2 (en) Simple electromagnetic shielding structure and manufacturing apparatus thereof
JP3231611B2 (en) Shield structure
JP3812813B2 (en) Simple electromagnetic shielding structure
JP2002142327A (en) Shielding structure for electric wire
JP2006269666A (en) Shield structure
JPH09120867A (en) Connector
JP4503458B2 (en) Shield wire ground connector and ground connection method
JP6628098B2 (en) Grounding structure of shielded wires
JP2000166074A (en) Ground connection terminal to shielded wire and ground wire connection method using ground connection terminal

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060303

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060322

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060522

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060712

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060714

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3832809

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090728

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100728

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110728

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110728

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120728

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130728

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees