JP3879335B2

JP3879335B2 - Shield plate structure

Info

Publication number: JP3879335B2
Application number: JP31126999A
Authority: JP
Inventors: 一彦井上; 厚仲畑; 和久藤井; 久郎薮
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-11-01
Filing date: 1999-11-01
Publication date: 2007-02-14
Anticipated expiration: 2019-11-01
Also published as: JP2001135428A

Description

【０００１】
【発明の属する技術分野】
本発明は、高周波ユニット等に用いるシールド板構造に関するものである。
【０００２】
【従来の技術】
図２１は箱状の金属ケース１に高周波リレーのようなリレー２…を取付け、金属ケース１の両側壁面に取り付けた同軸コネクタ９…とリレー２…の接続端子（以下リレー端子と言う）３との間を同軸ケーブル４…で接続したり、同軸ケーブル４同士を接続し、またリレー２の駆動装置５などを配設した従来の高周波ユニット７を金属ケース１の底部開口より見た図面である。
【０００３】
この従来の高周波ユニット７では、同軸ケーブル４…をリレー２…のリレー端子３に接続する場合、図２２に示すように同軸ケーブル４の芯線４ａをリレー端子３に半田付けするとともに同軸ケーブル４のシールド部４ｂ＜この図示例のる同軸ケーブル４は外被全体がシールド部４ｂとなっている＞をリレー端子３の周囲に設けたグランドプレート８に半付け（斜線部位）してグランドに落としていた。
【０００４】
リレー端子３と同軸ケーブル４の芯線４ａの半田付けは図２３（ａ）〜（ｃ）に示すようにリレー２の底部に同軸ケーブル４を当接するように配置して芯線４ａの先端側面をリレー端子３の側面に接触させる形で、半田付けを行っている（図において斜線部位Ｘで示す）。
【０００５】
【発明が解決しようとする課題】
上記のような同軸ケーブル４の芯線４ａのリレー端子３への半田付け構成や、同軸ケーブル４同士の空中配線（図２１中の６で示す部位）では、また同軸ケーブル４の保持ができず、また同軸ケーブル４の位置決めが難しく、同軸ケーブル４の組み付け作業性が悪いという問題があった。
【０００６】
またグランドプレート８へのシールド部４ｂの半田付けによる接地方法ではグランドが広く取れず、また高周波特性を調整する機構も無いため、高周波特性調整が難しいという問題があった。
【０００７】
更に上記のように同軸ケーブル４の芯線４ａをリレー端子３に接触させて半田付けする構成では、結合が半田でのみの為、結合の信頼性が低く、外力がかかった時等に結合が外れる可能性が高く、また同軸ケーブル４の位置決め手段がないため同軸ケーブル４を所定の位置に配設することが難しいという問題があった。
【０００８】
本発明は、上記の問題点に鑑みて為されたもので、請求項１の発明の目的とするところは同軸ケーブルの組み付け作業が容易で、しかもグランドが広くとれて高周波特性が良く、また加工が容易に行え、その上同軸ケーブルの位置決めが容易で且つ同軸ケーブルの位置決め効果が３６０度の何れの方向からも得られるとともに、高周波特性を調整することができるシールド板構造を提供することある。
【０００９】
請求項２の発明の目的は、請求項１の発明の目的に加えて、同軸ケーブルの組み付け作業が効率良く行えるシールド板構造を提供することにある。
【００１０】
請求項３の発明の目的は、請求項２の発明の目的に加えて、同軸ケーブルの組み付け作業時に容易に同軸ケーブルを仮固定できるシールド板構造を提供することにある。
【００１１】
請求項４の発明の目的は、請求項２又は３の発明の目的に加えて、同軸ケーブルを容易に保持部の切り起こし片間に容易に挿入でき、しかも仮固定された同軸ケーブルが外れ難いシールド板構造を提供することにある。
【００１２】
請求項５の発明の目的は、請求項１〜４の何れかの発明の目的に加えて同一面積内で最大の切り起こし片の長さが取れ、同軸ケーブルの保持強度が大きくとれるシールド板構造を提供することにある。
【００１３】
請求項６の発明の目的は、請求項１〜５の何れかの発明の目的に加えて高さ位置を同軸ケーブルの組み付け作業がし易い位置に決めることができ、作業性の効率化が図れるシールド板構造を提供することにある。
【００１７】
請求項７の発明の目的は、請求項１〜６の何れかの発明の目的に加えて高周波特性の調整作業が効率良く行えしかも容量片の製作コストも安価なシールド板構造を提供することにある。
【００１９】
【課題を解決するための手段】
請求項１の発明では、一枚の金属平板に打ち抜き曲げ加工により一体に形成され、同軸ケーブルを保持する保持部と、上記金属平板に一体に設けられ、上記金属平板の板面に対して直交する方向が軸方向で、周面に上記同軸ケーブルのシールド部端面を当接して位置決めを行う円柱状の位置決め用突起と、該円柱状の位置決め用突起の中央部から上方向に突出し、上記同軸ケーブルの芯線を接続する接続端子からなる結合部と、該結合部の近傍の上記金属平板に設けられた容量片とを備えていることを特徴とする。
【００２０】
請求項２の発明では、請求項１の発明において、上記保持部を並行する一対の切り起こし片で構成して、両切り起こし片間に同軸ケーブルを保持することを特徴とする。
【００２１】
請求項３の発明では、請求項２の発明において、上記一対の切り起こし片の先端間の距離を基端間の距離よりも狭くしたことを特徴とする。
【００２２】
請求項４の発明では、請求項２又は３の発明において、上記一対の切り起こし片の先端対向面にリブを対向突出させて成ることを特徴とする。
【００２３】
請求項５の発明では、請求項２〜４の何れかの発明において、上記一対の切り起こし片間の中心線を、多角形状の金属平板の各角と金属平板の中心点を結んだ線上としたことをことを特徴とする。
【００２４】
請求項６の発明では、請求項１〜５の何れかの発明において、上記金属平板の周縁より外方へ脚片を一体延長して、金属平板の板面に対して略直角に折り曲げるとともに該脚片の先部を外向きに略直角に折り曲げて形成した取付足片を設けて成ることを特徴とする。
【００２８】
請求項７の発明では、請求項１〜６の何れかの発明において、上記容量片は上記金属平板を切り起こして形成して成ることを特徴とする。
【００３２】
【発明の実施の形態】
以下本発明を実施形態により説明する。
【００３３】
（実施形態１）
図１に示す本実施形態のシールド板１０は一枚の銅板のような金属板を金型により打ち抜き加工して得られた図２に示す金属平板１１を更に金型により折り曲げ加工することで、３本の同軸ケーブル４を各別に保持する保持部１２ａ〜１２ｃと、高周波リレーのようなリレー２のリレー端子３の突出側、例えば底部を収める配置部１３とを一体に形成したものである。
【００３４】
つまり図２に示すように打ち抜き形成された金属平板１１は略Ｔ状部位を基片１１ａとし、この基片１１ａの横片の両端部を図２に示す２点鎖線部位を基端として図３に示すよう裏面方向（図３（ａ）では上方）に折り曲げ、また基片１１ａの中央片の先端部を２点鎖線部位を基端として上記裏面方向に折り曲げ、更に横片の両側部の上縁より突出せる突出片１１ｂの先部を図２に示す２点鎖線部位を基端として裏面方向に折り曲げ、これら折り曲げ片１４…で囲繞された基片１１ａの裏面側を図１に示すようにリレー２のリレー端子３の突出面側を当接配置する配置部１３としている。
【００３５】
また基片１１ａの中央片の反対側の縁、つまり突出片１１ｂ、１１ｂ間の縁に連設された中央部位を除いて周囲が切り離された矩形片１１ｃの両側を図２で示す２点鎖線を基端として表面方向（図３（ａ）では下方）に略直角に起こして並行する一対の切り起こし片１５ａ，１５ａを形成し、これら切り起こし片１５ａ，１５ａ間に同軸ケーブル４を挟み込んで保持する保持部１２ａを構成している。
【００３６】
更に基片１１ａの両側には夫々略Ｃ状のスリットにより一側縁の中央部を除いて切り離された矩形片１１ｄを設けてあり、これらの矩形片１１ｄの両側を図２で示す２点鎖線を基端として上記表面方向に略直角に起こすことで並行する一対の切り起こし片１５ｂ，１５ｂ及び１５ｃ，１５ｃを夫々形成し、切り起こし片１５ｂ，１５ｂ及び１５ｃ，１５ｃにより同軸ケーブル４を挟み込んで保持する保持部１２ｂ，１２ｃを構成している。
【００３７】
これら保持部１２ｂ，１２ｃは、基片１１ａの両側部に基片１１ａを左右に二分し上記保持部１２ａの中心を通る線に対して斜め方向に設けられ、保持部１２ａでは同軸ケーブル４の先端方向が基片１１ａの中央片方向に向くように同軸ケーブル４を切り起こし片１５ａ，１５ａ間に嵌め込み、他の保持部１２ｂ，１２ｃでは基片１１ａの中央側から外方向に先端部が向くように夫々の切り起こし片１５ｂ，１５ｂ及び１５ｃ，１５ｃ間に同軸ケーブル４を嵌め込むようになっている。
【００３８】
また保持部１２ａ〜１２ｃの前方位置のシールド板用金属平板１１の表面側には打ち抜き加工により図４に示すような外観が円柱状の位置決め用突起１６を夫々突設しており、図５に示すように保持部１２ａ〜１２ｃに同軸ケーブル４を保持させる際に同軸ケーブル４のシールド部４ｂを突起１６の周面に当てることで同軸ケーブル４の位置決めを行うようになっている。
【００３９】
またこれら保持部１２ａ〜１２ｃに対応して設けられた３つの位置決め用突起１６…は一直線上に配置されるとともに隣接するもの同士の中心点間の距離が丁度リレー４のリレー端子３の間隔に対応しており、これら位置決め用突起１６の上面に開口した中心透孔１６ａを介して裏面側のリレー２のリレー端子３を図７に示すように表面側に臨ませるようになっている。
【００４０】
さらに位置決め用突起１６の近傍で且つ対応する保持部１２ａ〜１２ｃとは反対側の位置にはシールド板用金属平板１１の一部を打ち抜き、曲げ加工で起こした容量片１７…を設けてある。尚図６は切り起こし片１５ｃ、１５ｃを切り起こし、容量片１７を起こした状態の保持部１２ｃの正面図である。
【００４１】
以上のように図２に示すようなシールド板用金属平板１１を銅板などの金属板から打ち抜きして形成した後、更に折り曲げ加工により図１に示すように本実施形態のシールド板１０を得るのである。
【００４２】
さてこのようにして製作された本実施形態のシールド板１０を用いて同軸ケーブル４の保持を行うとともに、同軸ケーブル４の芯線４ａをリレー２のリレー端子３に半田付けを行うに当たっては次のように組み付け作業を行う。まず図２０に示すような金属ケース１内に配設してあるリレー２の底部を折り曲げ片１４に囲まれた配置部１３に嵌め込むようにしてリレー２の底部にシールド板１０を配置し、この配置の際に各リレー端子３の先端を位置決め用突起１６の中心透孔１６ａを介してシールド板１０の表面側に臨ませる。
【００４３】
そして各保持部１２ａ〜１２ｃに対しては夫々の切り起こし片１５ａ，１５ａ〜１５ｃ、１５ｃ間に同軸ケーブル４を挿入する。この際同軸ケーブル４の外被を構成するシールド部４ｂが位置決め用突起１６の周面に当る位置まで同軸ケーブル４を移動させて同軸ケーブル４の保持位置の位置決めを行う。
【００４４】
この状態で芯線４ａをリレー端子３に斜線で示すように半田付けするとともに保持部１２ａ〜１２ｃの各切り起こし片１５ａ，１５ａ〜１５ｃ，１５ｃに対して同軸ケーブル４のシールド部４ｂを斜線で示すように半田付け固定し、更にリレー２の金属メッキケース２ａと金属メッキケース２ａの側面に当接している各折り曲げ片１４に設けた孔１４ａの内縁部分とを半田付けするとともにリレー２のグランドプレート８とシールド板１０とを半田付けしてシールド板１０全体をグランドとする。
【００４５】
尚高周波特性を調整する場合には図７で矢印Ｙにより示すように容量片１７の折り曲げを調整して、同軸ケーブル４の芯線４ａとリレー端子３との半田付け部位、つまり結合部と容量片１７との距離を変化させることで行う。
【００４６】
尚図８（ａ）に示すように保持部１２を構成する一対の切り起こし片１５、１５を先端間の距離が基端間の距離よりも狭くなるようにすれば、切り起こし片１５，１５間に挿入する同軸ケーブル４を切り起こし片１５，１５の弾性で図８（ｂ）に示すように切り起こし片１５，１５ａで挟持させることができ、そのため、同軸ケーブル４の仮固定が容易にできる。
【００４７】
また図９（ａ）に示すように保持部１２を構成する一対の切り起こし片１５，１５の先端の対向面にリブ１８を突出させてもよい。この場合切り起こし片１５，１５間の先端間を図７の場合のように狭める必要がないので、同軸ケーブル４を上から容易に挿入することができる。しかも図９（ｂ）に示すように一旦挿入された同軸ケーブル４はリブ１８，１８により抑え込まれて、外れ難くなり、仮固定を確実なものとする。
【００４８】
ところでリレー端子３と同軸ケーブル４の芯線４ａとの結合部位は叙述した図２１に示した従来例と略同じ方法により判断付けを行っているが、図１０（ａ）（ｂ）に示すよう同軸ケーブル４の芯線４ａ先端を扁平形状とするとともに該扁平部位に貫通孔４ｃを設け、図１１（ａ）〜（ｃ）に示すようにリレー端子３を貫通孔４ｃに通して両者を半田付けするようにしても良い。
【００４９】
この場合同軸ケーブル４の位置決めが図れ位置決め用突起１６が不要となる。また貫通孔４ｃにリレー端子３を通して半田付けするため芯線４ａとリレー端子３との結合の信頼性も向上する。更に芯線４ａを平らに押しつぶして貫通孔４ｃをあける構造であるため加工が容易である。
【００５０】
また図１２（ａ）（ｂ）に示すように同軸ケーブル４の芯線４ａ先端を環状に折り曲げて該先部に貫挿孔４ｃ’を設け、図１３（ａ）〜（ｃ）に示すようにリレー端子３を貫通孔４ｃ’に通して両者を半田付けするようにしても良い。この場合も同軸ケーブル４の位置決めが図れ位置決め用突起１６が不要となる上に、貫通孔４ｃ’にリレー端子３を通して半田付けするため芯線４ａとリレー端子３との結合の信頼性も向上する。
【００５１】
更にまた図１４（ａ）（ｂ）に示すように同軸ケーブル４の芯線４ａ先端を扁平形状に押しつぶしてその先端をＹ字状に割る加工を施せば、図１５（ａ）〜（ｃ）に示すようにリレー端子３をＹ字状の凹欠部４ｄに直角方向から嵌め込んでリレー端子３を芯線４ａに当接させることができ、そのため図１０〜図１３で示した上記例の場合と同様に同軸ケーブル４の位置決めが図れ、また上記の貫通孔４ｃや４ｃ’に通す場合に比べて作業性も良く、更にリレー端子３をＹ字状の凹欠部４ｄに直角方向から嵌め込んでリレー端子３を芯線４ａに当接させた状態で半田付けを行うため結合の信頼性も向上する。
【００５２】
尚図１１，図１３、図１５中の斜線で示す部位が半田付け部位である。
【００５３】
（参照例）
上記実施形態１はリレー２に対応するシールド板構造に係るものであったが、本参照例は複数（例では４本）の同軸ケーブル４を結合する際に用いるシールド板構造に係るものであり、図１６に示すように中央に略正方形の基片２１ａを形成するとともに該基片２１ａの４つの辺より外方向に脚片２１ｂ…を延長突出させて略十字状に銅板のような金属板を打ち抜き加工して得られた金属平板２１を図１７，図１８に示すように更に折り曲げ加工することで製作されたシールド板２０からなる。
【００５４】
この金属平板２１では基片２１ａでは基片２１ａの中心と基片２１ａの４隅の角を結ぶ線を挟むように並行する対の切り起こし片２２ａ，２２ａ〜２２ｄ，２２ｄを打ち抜き形成し、図１７（ａ）〜（ｃ）及び図１８に示すように各切り起こし片２２ａ，２２ａ〜２２ｄ、２２ｄを切り起こして同軸ケーブル４を保持する保持部２３ａ〜２３ｄを夫々構成している。ここで保持部２３ａ〜２３ｄを対角方向に配置したのは、切り起こし片２２ａ，２２ａ〜２２ｄ、２２ｄの長さを同一面積では最大長として保持強度を大きくするできるためである。
【００５５】
さて脚片２１ｂ…は基片２１ａとの境界部位（２点鎖線で示す）から上記切り起こし片２２ａ、２２ａ〜２２ｄ，２２ｄの切り起こし方向とは逆方向に折り曲げられて図２０に示す金属ケース１への取付足片となる。各脚片２１ｂの先部には固定螺子などを挿通させるための取付孔２４を穿設しており、この取付孔２４を穿設した先部をさらに外向きに折り曲げることで金属ケース１に対する取付片２５を形成するようになっている。そしてこの取付片２５を折り曲げ形成する位置を変えることで図１７（ｂ）に示す取付足片としての高さ寸法Ｈを同軸ケーブル４の組み付けに最適な高さとなるように調整するのである。
【００５６】
一方基片２１ａの中央には上記中心を中心とする扁平な円柱状の位置決め用突起２６を図１９に示すように一体に突出形成してある。この位置決め用突起２６は実施形態１での位置決め用突起１６と同様に各保持部２３ａ〜２３ｄにて保持する同軸ケーブル４のシールド部４ｂを周面に当接することで同軸ケーブル４の位置決めを行うもので、円柱状に形成されているため３６０度の何れの方向からの同軸ケーブル４に対しても位置決めを図ることができ、本参照例では４つの保持部２３ａ〜２３ｄで共用している。
【００５７】
以上のようにしてシール板用金属平板２１を折り曲げ加工することで得られた本参照例のシールド板２０を用いて図２１に示すような金属ケース１内に配線された複数の同軸ケーブル４を結合するに当たっては、まず取付片２５の取付孔２４を用いて取付螺子などにより金属ケース１内に取り付ける。
【００５８】
しかる後に図２０に示すように各保持部２３ａ〜２３ｄの切り起こし片２２ａ，２２ａ〜２２ｄ，２２ｄ間に同軸ケーブル４を夫々挿入して保持させる。この際対の切り起こし片２２ａ，２２ａ〜２２ｄ，２２ｄは先端間の距離が基端間の距離よりも図１８に示すように狭くして、図８の例と同様に同軸ケーブル４を仮固定できるようにしている。勿論図９の例のようにリブ１８を設ける構成でもよい。さて仮固定する際に同軸ケーブル４のシールド部４ｂの先端を上記位置決め用突起２６の周面に当接させることで位置決めを行う。そして位置決め用突起２６の中心点上方において各保持部２２ａ〜２２ｄで保持した各同軸ケーブル４の芯線４ａ…を半田付け（斜線で示す）により結合する。また切り起こし片２２ａ、２２ａ〜２２ｄ，２２ｄに対して保持されている同軸ケーブル４のシールド部４ｂを斜線で示すように半田付けするのである。
【００５９】
【発明の効果】
請求項１の発明は、一枚の金属平板に打ち抜き曲げ加工により一体に形成され、同軸ケーブルを保持する保持部と、上記金属平板に一体に設けられ、上記金属平板の板面に対して直交する方向が軸方向で、周面に上記同軸ケーブルのシールド部端面を当接して位置決めを行う円柱状の位置決め用突起と、該円柱状の位置決め用突起の中央部から上方向に突出し、上記同軸ケーブルの芯線を接続する接続端子からなる結合部と、該結合部の近傍の上記金属平板に設けられた容量片とを備えているので、同軸ケーブルの組み付け作業が容易で、しかもグランドが広くとれて高周波特性が良く、また打ち抜き曲げ加工で製作できるため加工が容易に行え、その結果保持部を高精度で且つ低コストで形成でき、その上、同軸ケーブルの位置決めが容易で且つ同軸ケーブルの位置決め効果が３６０度の何れの方向からも得られ、しかも容量片の位置を調整することで高周波特性を簡単に調整することができるという効果がある。
【００６０】
請求項２の発明は、請求項１の発明において、上記保持部を並行する一対の切り起こし片で構成して、両切り起こし片間に同軸ケーブルを保持するので、請求項１の発明の効果に加えて、同軸ケーブルの組み付け作業が効率良く行えるという効果がある。
【００６１】
請求項３の発明は、請求項２の発明において、上記一対の切り起こし片の先端間の距離を基端間の距離よりも狭くしたので、請求項２の発明の効果に加えて、同軸ケーブルの組み付け作業時に容易に同軸ケーブルを仮固定できるという効果がある。
【００６２】
請求項４の発明は、請求項２又は３の発明において、上記一対の切り起こし片の先端対向面にリブを対向突出させてあるので、請求項３の発明の効果に加えて、同軸ケーブルを容易に保持部の切り起こし片間に容易に挿入でき、しかも仮固定された同軸ケーブルが外れ難いという効果がある。
【００６３】
請求項５の発明は、請求項２〜４の何れかの発明において、上記一対の切り起こし片間の中心線を、多角形状の金属平板の各角と金属平板の中心点を結んだ線を挟むように切り起こし形成してあるので、請求項１〜４の何れかの発明の効果に加えて同一面積内で最大の切り起こし片の長さが取れ、結果同軸ケーブルの保持強度が大きくとれるという効果がある。
【００６４】
請求項６の発明は、請求項１〜５の何れかの発明において、上記金属平板の周縁より外方へ脚片を一体延長して、金属平板の板面に対して略直角に折り曲げるとともに該脚片の先部を外向きに略直角に折り曲げて形成した取付足片を設けてあるので、請求項１〜５の何れかの発明の効果に加えて、高さ位置を同軸ケーブルの組み付け作業がし易い位置に決めることができ、作業性の効率化が図れる効果がある。
【００６８】
請求項７の発明は、請求項１〜６の何れかの発明において、上記容量片は上記金属平板を切り起こして形成してあるので、請求項１〜６の何れかの発明の効果に加えて、容量片の切り起こしを調整して結合部との位置を変えることで、高周波特性の調整作業が効率良く行え、しかも容量片の製作コストも安価であるという効果がある。
【図面の簡単な説明】
【図１】本発明の実施形態１の使用状態を示す上面図である。
【図２】同上のシールド板の原板となる金属平板の上面図である。
【図３】（ａ）は同上のシールド板の正面図である。
（ｂ）は同上のシールド板の上面図である。
（ｃ）は同上のシールド板の一側面図である。
【図４】同上の図３（ｂ）のＡ−Ａ’の拡大断面図である。
【図５】同上の位置決め用突起の説明図である。
【図６】同上の一つの保持部の一部省略せる正面図である。
【図７】同上の容量片の説明図である。
【図８】同上の保持部の別の例の説明図である。
【図９】同上の保持部の他の例の説明図である。
【図１０】（ａ）は同上に用いる同軸ケーブルの別の例の要部の上面図である。
（ｂ）は同上に用いる同軸ケーブルの別の例の要部の側面図である。
【図１１】（ａ）は同上に用いる別の例の同軸ケーブルの芯線とリレー端子の結合部の上面図である。
（ｂ）は同上に用いる別の例同軸ケーブルの芯線とリレー端子の結合部の側面図である。
（ｃ）は同上に用いる別の同軸ケーブルの芯線とリレー端子の結合部の正面図である。
【図１２】（ａ）は同上に用いる同軸ケーブルの他の例の要部の上面図である。
（ｂ）は同上に用いる同軸ケーブルの他の例の要部の側面図である。
【図１３】（ａ）は同上に用いる他の例の同軸ケーブルの芯線とリレー端子の結合部の上面図である。
（ｂ）は同上に用いる他の例同軸ケーブルの芯線とリレー端子の結合部の側面図である。（ｃ）は同上に用いる他の同軸ケーブルの芯線とリレー端子の結合部の正面図である。
【図１４】（ａ）は同上に用いる同軸ケーブルのその他の例の要部の上面図である。
（ｂ）は同上に用いる同軸ケーブルのその他の例の要部の側面図である。
【図１５】（ａ）は同上に用いるその他の同軸ケーブルの芯線とリレー端子の結合部の上面図である。
（ｂ）は同上に用いるその他の例同軸ケーブルの芯線とリレー端子の結合部の側面図である。
（ｃ）は同上に用いるその他の同軸ケーブルの芯線とリレー端子の結合部の正面図である。
【図１６】本発明の参照例のシールド板の原板となる金属平板の上面図である。
【図１７】（ａ）は同上のシールド板の上面図である。
（ｂ）は同上のシールド板の一側面図である。
（ｃ）は同上のシールド板の正面図である。
【図１８】同上の一保持部の一部省略せる正面図である。
【図１９】同上の図１７（ａ）のＡ−Ａ’の拡大断面図である。
【図２０】同上の使用状態を示す上面図である。
【図２１】従来例の高周波ユニットにおける同軸ケーブルの配線状態の説明図である。
【図２２】同上の同軸ケーブルとリレーとの結合状態を示す説明図である。
【図２３】（ａ）は同上に用いる同軸ケーブルの芯線とリレー端子の結合部の上面図である。
（ｂ）は同上に用いる例同軸ケーブルの芯線とリレー端子の結合部の側面図である。
（ｃ）は同上に用いる同軸ケーブルの芯線とリレー端子の結合部の正面図である。
【符号の説明】
２リレー
２ａ金属メッキケース
３リレー端子
４同軸ケーブル
４ａ芯線
４ｂシールド部
８グランドプレート
１０シールド板
１２ａ〜１２ｃ保持部
１３配置部
１４折り曲げ片
１５ａ〜１５ｃ切り起こし片
１６位置決め用突起
１６ａ中心透孔
１７容量片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shield plate structure used for a high-frequency unit or the like.
[0002]
[Prior art]
FIG. 21 shows a box-shaped metal case 1 having relays 2 such as high-frequency relays attached thereto, and coaxial connectors 9 attached to both side walls of the metal case 1 and connection terminals 3 (hereinafter referred to as relay terminals) 3 of the relays 2. 1 is a view of a conventional high-frequency unit 7 in which a coaxial cable 4 is connected to each other, coaxial cables 4 are connected to each other, and a driving device 5 of the relay 2 is disposed, as viewed from the bottom opening of the metal case 1. .
[0003]
In this conventional high-frequency unit 7, when the coaxial cables 4... Are connected to the relay terminals 3 of the relays 2..., The core wires 4 a of the coaxial cables 4 are soldered to the relay terminals 3 as shown in FIG. The shield portion 4b <the coaxial cable 4 in the illustrated example has the entire outer shield portion 4b> is half-attached (shaded area) to the ground plate 8 provided around the relay terminal 3 and dropped to the ground. It was.
[0004]
Soldering between the relay terminal 3 and the core wire 4a of the coaxial cable 4 is performed so that the coaxial cable 4 is in contact with the bottom of the relay 2 as shown in FIGS. Soldering is performed in contact with the side surface of the terminal 3 (indicated by the hatched portion X in the figure).
[0005]
[Problems to be solved by the invention]
In the configuration of soldering the core wire 4a of the coaxial cable 4 to the relay terminal 3 and the aerial wiring between the coaxial cables 4 (portion indicated by 6 in FIG. 21), the coaxial cable 4 cannot be held again. Further, there is a problem that the positioning of the coaxial cable 4 is difficult and the assembling workability of the coaxial cable 4 is poor.
[0006]
Further, the grounding method by soldering the shield portion 4b to the ground plate 8 has a problem in that it is difficult to adjust the high frequency characteristics because the ground cannot be widely taken and there is no mechanism for adjusting the high frequency characteristics.
[0007]
Further, in the configuration in which the core wire 4a of the coaxial cable 4 is brought into contact with the relay terminal 3 and soldered as described above, since the coupling is only solder, the coupling is low in reliability, and the coupling is disconnected when an external force is applied. There is a high possibility, and since there is no positioning means for the coaxial cable 4, there is a problem that it is difficult to arrange the coaxial cable 4 at a predetermined position.
[0008]
The present invention has been made in view of the above-mentioned problems. The object of the invention of claim 1 is that the coaxial cable is easily assembled, the ground is wide, the high frequency characteristics are good, and the processing is performed. is easily performed, the positioning effect of the upper and coaxial cable easy positioning of the coaxial cable can be obtained from any of the 360-degree direction, there may be provided a shield plate structure that can be adjusted high-frequency characteristics .
[0009]
In addition to the object of the invention of claim 1, an object of the invention of claim 2 is to provide a shield plate structure capable of efficiently assembling a coaxial cable.
[0010]
In addition to the object of the invention of claim 2, an object of the invention of claim 3 is to provide a shield plate structure capable of temporarily fixing the coaxial cable easily at the time of assembling the coaxial cable.
[0011]
In addition to the object of the invention of claim 2 or 3, the object of the invention of claim 4 is that the coaxial cable can be easily inserted between the cut and raised pieces of the holding portion, and the temporarily fixed coaxial cable is difficult to come off. It is to provide a shield plate structure.
[0012]
The object of the invention of claim 5 is the shield plate structure in which the length of the largest cut-and-raised piece can be taken within the same area and the holding strength of the coaxial cable can be increased in addition to the object of the invention of any one of claims 1 to 4. Is to provide.
[0013]
The object of the invention of claim 6 is that, in addition to the object of any one of the inventions of claims 1 to 5, the height position can be determined at a position where the assembly work of the coaxial cable can be easily performed, and the work efficiency can be improved. It is to provide a shield plate structure.
[0017]
The object of the invention of claim 7 is to provide a shield plate structure which can efficiently adjust the high-frequency characteristics in addition to the object of any one of the inventions of claims 1 to 6 and can be manufactured at a low cost. is there.
[0019]
[Means for Solving the Problems]
According to the first aspect of the present invention, a single metal flat plate is integrally formed by punching and bending, and a holding portion for holding the coaxial cable is provided integrally with the metal flat plate, and is orthogonal to the plate surface of the metal flat plate. The axial direction is an axial direction, and a cylindrical positioning projection for positioning by contacting the end face of the shield portion of the coaxial cable on the peripheral surface, and the coaxial coaxial projection protruding upward from the center of the cylindrical positioning projection It is characterized by comprising a coupling part composed of a connection terminal for connecting the core wire of the cable, and a capacity piece provided on the metal flat plate in the vicinity of the coupling part .
[0020]
According to a second aspect of the present invention, in the first aspect of the invention, the holding portion is constituted by a pair of cut and raised pieces in parallel, and the coaxial cable is held between the cut and raised pieces.
[0021]
The invention of claim 3 is characterized in that, in the invention of claim 2, the distance between the tip ends of the pair of cut and raised pieces is made smaller than the distance between the base ends.
[0022]
According to a fourth aspect of the present invention, in the second or third aspect of the present invention, a rib is caused to project oppositely from the tip-facing surfaces of the pair of cut and raised pieces.
[0023]
According to a fifth aspect of the present invention, in any one of the second to fourth aspects, the center line between the pair of cut and raised pieces is on a line connecting each corner of the polygonal flat metal plate and the central point of the flat metal plate. It is characterized by that.
[0024]
According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the leg piece is integrally extended outward from the periphery of the metal flat plate and bent at a substantially right angle with respect to the plate surface of the metal flat plate. An attachment foot piece formed by bending the tip of the leg piece outward at a substantially right angle is provided.
[0028]
According to a seventh aspect of the present invention, in any one of the first to sixth aspects , the capacity piece is formed by cutting and raising the metal flat plate.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0033]
(Embodiment 1)
The shield plate 10 of the present embodiment shown in FIG. 1 is obtained by further bending a metal plate 11 shown in FIG. 2 obtained by punching a metal plate such as a copper plate with a die. The holding portions 12a to 12c that hold the three coaxial cables 4 separately and the arrangement portion 13 that accommodates the protruding side of the relay terminal 3 of the relay 2, such as a high frequency relay, for example, the bottom portion, are integrally formed.
[0034]
That is, as shown in FIG. 2, the punched and formed metal flat plate 11 has a substantially T-shaped portion as a base piece 11a, and both ends of the horizontal piece of the base piece 11a are shown in FIG. As shown in Fig. 3, it is bent in the back direction (upward in Fig. 3 (a)), the front end of the central piece of the base piece 11a is bent in the back direction with the two-dot chain line part as the base end, and further on both sides of the horizontal piece The tip of the protruding piece 11b protruding from the edge is bent toward the back surface with the two-dot chain line portion shown in FIG. 2 as the base end, and the back surface side of the base piece 11a surrounded by these bent pieces 14 is as shown in FIG. The projecting surface side of the relay terminal 3 of the relay 2 is used as an arrangement portion 13 that abuts and is disposed.
[0035]
Further, the two-dot chain line shown in FIG. 2 shows both sides of the rectangular piece 11c, the periphery of which is separated except for the edge on the opposite side of the central piece of the base piece 11a, that is, the central portion connected to the edge between the protruding pieces 11b and 11b. A pair of cut-and-raised pieces 15a and 15a are formed in parallel with the surface direction (downward in FIG. 3A) from the base end, and the coaxial cable 4 is sandwiched between the cut-and-raised pieces 15a and 15a. The holding part 12a to hold is configured.
[0036]
Further, rectangular pieces 11d separated by a substantially C-shaped slit except for the central portion of one side edge are provided on both sides of the base piece 11a, and both sides of these rectangular pieces 11d are shown in FIG. And a pair of cut-and-raised pieces 15b, 15b and 15c, 15c which are parallel to each other by being raised at a substantially right angle with respect to the surface direction, and the coaxial cable 4 is sandwiched between the cut-and-raised pieces 15b, 15b and 15c, 15c The holding parts 12b and 12c to hold are configured.
[0037]
These holding portions 12b and 12c are provided on both sides of the base piece 11a in an oblique direction with respect to a line that bisects the base piece 11a to the left and right and passes through the center of the holding portion 12a. The coaxial cable 4 is cut and raised so that the direction is directed toward the central piece of the base piece 11a, and is fitted between the pieces 15a and 15a. The other holding portions 12b and 12c have the distal ends directed outward from the center side of the base piece 11a. The coaxial cable 4 is fitted between the cut and raised pieces 15b, 15b and 15c, 15c.
[0038]
Further, cylindrical projections 16 having an external appearance as shown in FIG. 4 are provided on the surface side of the metal plate 11 for the shield plate in front of the holding portions 12a to 12c by punching. As shown, when the coaxial cable 4 is held by the holding portions 12 a to 12 c, the coaxial cable 4 is positioned by placing the shield portion 4 b of the coaxial cable 4 against the peripheral surface of the protrusion 16.
[0039]
Further, the three positioning protrusions 16 provided corresponding to the holding portions 12a to 12c are arranged in a straight line, and the distance between the center points of the adjacent ones is just the distance between the relay terminals 3 of the relay 4. The relay terminal 3 of the relay 2 on the back side faces the front side as shown in FIG. 7 through a central through hole 16a opened on the top surface of the positioning projections 16.
[0040]
Further, in the vicinity of the positioning projections 16 and on the opposite side of the corresponding holding portions 12a to 12c, capacity pieces 17 are formed by punching a part of the metal plate 11 for the shielding plate and bending it. FIG. 6 is a front view of the holding portion 12c in a state where the cut pieces 15c and 15c are cut and raised and the capacity piece 17 is raised.
[0041]
As described above, after the shield plate metal plate 11 as shown in FIG. 2 is formed by punching from a metal plate such as a copper plate, the shield plate 10 of the present embodiment is obtained by further bending as shown in FIG. is there.
[0042]
The coaxial cable 4 is held by using the shield plate 10 of the present embodiment manufactured as described above, and the core wire 4a of the coaxial cable 4 is soldered to the relay terminal 3 of the relay 2 as follows. Perform assembly work. First, the shield plate 10 is arranged at the bottom of the relay 2 so that the bottom of the relay 2 arranged in the metal case 1 as shown in FIG. 20 is fitted into the arrangement part 13 surrounded by the bent piece 14. At this time, the tip of each relay terminal 3 is made to face the surface side of the shield plate 10 through the central through hole 16a of the positioning projection 16.
[0043]
And with respect to each holding | maintenance part 12a-12c, the coaxial cable 4 is inserted between each cut-and-raised piece 15a, 15a-15c, 15c. At this time, the coaxial cable 4 is moved to a position where the shield portion 4 b constituting the outer cover of the coaxial cable 4 comes into contact with the peripheral surface of the positioning protrusion 16 to position the holding position of the coaxial cable 4.
[0044]
In this state, the core wire 4a is soldered to the relay terminal 3 as indicated by diagonal lines, and the shield part 4b of the coaxial cable 4 is indicated by diagonal lines with respect to the cut and raised pieces 15a, 15a to 15c, 15c of the holding parts 12a to 12c. Further, the metal plating case 2a of the relay 2 and the inner edge portion of the hole 14a provided in each bent piece 14 in contact with the side surface of the metal plating case 2a are soldered and the ground plate of the relay 2 is fixed. 8 and the shield plate 10 are soldered so that the entire shield plate 10 is grounded.
[0045]
When adjusting the high-frequency characteristics, the bending of the capacitor piece 17 is adjusted as indicated by the arrow Y in FIG. 7, and the soldered portion between the core wire 4a of the coaxial cable 4 and the relay terminal 3, that is, the coupling portion and the capacitor piece. This is done by changing the distance to 17.
[0046]
As shown in FIG. 8A, if the distance between the tip ends of the pair of raised and raised pieces 15 and 15 constituting the holding portion 12 is made smaller than the distance between the proximal ends, the raised and raised pieces 15 and 15 are formed. The coaxial cable 4 inserted therebetween is cut and raised, and can be clamped between the cut and raised pieces 15 and 15a as shown in FIG. 8B by the elasticity of the pieces 15 and 15, so that the coaxial cable 4 can be temporarily fixed easily. it can.
[0047]
Further, as shown in FIG. 9A, the rib 18 may be protruded from the opposing surfaces at the tips of the pair of cut and raised pieces 15, 15 constituting the holding portion 12. In this case, it is not necessary to narrow the tip between the cut-and-raised pieces 15, 15 as in the case of FIG. 7, so that the coaxial cable 4 can be easily inserted from above. Moreover, as shown in FIG. 9B, the coaxial cable 4 once inserted is restrained by the ribs 18 and 18 so that it is difficult to come off and the temporary fixing is ensured.
[0048]
By the way, although the connection part of the relay terminal 3 and the core wire 4a of the coaxial cable 4 is judged by the substantially same method as the prior art example shown in FIG. 21 described, it is coaxial as shown to FIG. 10 (a) (b). The tip of the core wire 4a of the cable 4 is flattened and a through hole 4c is provided in the flat part, and the relay terminal 3 is passed through the through hole 4c and soldered as shown in FIGS. 11 (a) to 11 (c). You may do it.
[0049]
In this case, the coaxial cable 4 can be positioned and the positioning projection 16 is not necessary. Moreover, since the through hole 4c is soldered through the relay terminal 3, the reliability of the coupling between the core wire 4a and the relay terminal 3 is improved. Further, since the structure is such that the core wire 4a is flattened to open the through hole 4c, the processing is easy.
[0050]
Also, as shown in FIGS. 12A and 12B, the end of the core wire 4a of the coaxial cable 4 is annularly bent to provide a through hole 4c ′ at the tip, as shown in FIGS. 13A to 13C. The relay terminal 3 may be passed through the through hole 4c ′ and soldered together. Also in this case, the positioning of the coaxial cable 4 can be achieved and the positioning projection 16 is not necessary, and the reliability of the coupling between the core wire 4a and the relay terminal 3 is improved because the relay terminal 3 is soldered to the through hole 4c ′.
[0051]
Furthermore, as shown in FIGS. 14 (a) and 14 (b), if the tip of the core 4a of the coaxial cable 4 is crushed into a flat shape and the tip is split into a Y shape, the processing shown in FIGS. 15 (a) to 15 (c) is performed. As shown, the relay terminal 3 can be fitted into the Y-shaped recess 4d from a right angle to bring the relay terminal 3 into contact with the core wire 4a. Therefore, in the case of the above example shown in FIGS. Similarly, the coaxial cable 4 can be positioned, and the workability is better than when the coaxial cable 4 is passed through the through holes 4c and 4c ′, and the relay terminal 3 is fitted into the Y-shaped recess 4d from a right angle. Since the soldering is performed in a state where the relay terminal 3 is in contact with the core wire 4a, the coupling reliability is also improved.
[0052]
In addition, the site | part shown with the oblique line in FIG.11, FIG.13, FIG.15 is a soldering site | part.
[0053]
(Reference example)
The first embodiment relates to a shield plate structure corresponding to the relay 2, but this reference example relates to a shield plate structure used when a plurality of (four in the example ) coaxial cables 4 are coupled. As shown in FIG. 16, a substantially square base piece 21a is formed at the center, and leg pieces 21b are extended outwardly from the four sides of the base piece 21a so that a metal plate such as a copper plate in a substantially cross shape. As shown in FIGS. 17 and 18, the metal flat plate 21 obtained by punching is made of a shield plate 20 produced by further bending.
[0054]
In this metal flat plate 21, a pair of cut-and-raised pieces 22a, 22a to 22d, and 22d are formed by punching in the base piece 21a so as to sandwich a line connecting the center of the base piece 21a and the four corners of the base piece 21a. As shown in FIGS. 17 (a) to (c) and FIG. 18, holding portions 23a to 23d for holding the coaxial cable 4 are configured by cutting and raising the cut and raised pieces 22a, 22a to 22d and 22d, respectively. The reason why the holding portions 23a to 23d are arranged diagonally is that the holding strength can be increased by setting the lengths of the cut and raised pieces 22a, 22a to 22d and 22d to the maximum length in the same area.
[0055]
The leg pieces 21b are bent from the boundary portion with the base piece 21a (indicated by a two-dot chain line) in the direction opposite to the cut-and-raised direction of the cut-and-raised pieces 22a, 22a to 22d and 22d, and shown in FIG. It becomes an attachment foot piece to 1. A mounting hole 24 for inserting a fixing screw or the like is formed in the tip portion of each leg piece 21b, and the tip portion in which the mounting hole 24 is drilled is further bent outward to be attached to the metal case 1. A piece 25 is formed. And the height dimension H as an attachment leg shown in FIG.17 (b) is adjusted so that it may become the optimal height for the assembly | attachment of the coaxial cable 4 by changing the position which bends and forms this attachment piece 25. FIG.
[0056]
On the other hand, at the center of the base piece 21a, a flat cylindrical positioning projection 26 centering on the center is integrally formed as shown in FIG. Similar to the positioning projection 16 in the first embodiment, the positioning projection 26 positions the coaxial cable 4 by contacting the shield portion 4b of the coaxial cable 4 held by the holding portions 23a to 23d with the peripheral surface. However, since it is formed in a cylindrical shape, it can be positioned with respect to the coaxial cable 4 from any direction of 360 degrees, and is shared by the four holding portions 23a to 23d in this reference example .
[0057]
A plurality of coaxial cables 4 wired in the metal case 1 as shown in FIG. 21 using the shield plate 20 of this reference example obtained by bending the metal plate 21 for the seal plate as described above. For the coupling, first, the mounting hole 25 of the mounting piece 25 is used to mount the metal case 1 with a mounting screw or the like.
[0058]
Thereafter, as shown in FIG. 20, the coaxial cable 4 is inserted and held between the cut and raised pieces 22a, 22a to 22d, 22d of the holding portions 23a to 23d. At this time, the pair of cut-and-raised pieces 22a, 22a to 22d, 22d are made such that the distance between the distal ends is narrower than the distance between the proximal ends as shown in FIG. 18, and the coaxial cable 4 is temporarily fixed as in the example of FIG. I can do it. Needless to say, the rib 18 may be provided as in the example of FIG. Now, when temporarily fixing, positioning is performed by bringing the tip of the shield portion 4b of the coaxial cable 4 into contact with the peripheral surface of the positioning projection 26. The core wires 4a... Of the coaxial cables 4 held by the holding portions 22a to 22d above the center point of the positioning projection 26 are joined by soldering (indicated by hatching). Further, the shield portion 4b of the coaxial cable 4 held against the cut and raised pieces 22a, 22a to 22d, 22d is soldered as shown by the oblique lines.
[0059]
【The invention's effect】
The invention of claim 1 is integrally formed on a single metal flat plate by punching and bending, and is provided integrally with the holding plate for holding the coaxial cable, and is orthogonal to the plate surface of the metal flat plate. The axial direction is an axial direction, and a cylindrical positioning projection for positioning by contacting the end face of the shield portion of the coaxial cable on the peripheral surface, and the coaxial coaxial projection protruding upward from the center of the cylindrical positioning projection Since it has a coupling part consisting of connection terminals for connecting the core wire of the cable and a capacity piece provided on the metal flat plate in the vicinity of the coupling part , the assembly work of the coaxial cable is easy and the ground can be widened. The high-frequency characteristics are good, and it can be manufactured easily by punching and bending. As a result, the holding part can be formed with high accuracy and low cost, and the coaxial cable can be easily positioned. And the locating effect of the coaxial cable can be obtained from any of the 360-degree direction, yet there is an effect that it is possible to easily adjust the frequency characteristic by adjusting the position of the capacitor element.
[0060]
According to the invention of claim 2, in the invention of claim 1, the holding portion is constituted by a pair of cut and raised pieces in parallel, and the coaxial cable is held between the cut and raised pieces. In addition, the coaxial cable can be assembled efficiently.
[0061]
In the invention of claim 3, in the invention of claim 2, since the distance between the tips of the pair of cut and raised pieces is made smaller than the distance between the base ends, in addition to the effect of the invention of claim 2, the coaxial cable There is an effect that the coaxial cable can be temporarily fixed easily during the assembling work.
[0062]
According to a fourth aspect of the present invention, in the second or third aspect of the invention, the ribs are caused to protrude opposite to the tip facing surfaces of the pair of cut and raised pieces. There is an effect that it can be easily inserted between the cut and raised pieces of the holding portion, and the temporarily fixed coaxial cable is difficult to come off.
[0063]
The invention of claim 5 is the invention according to any one of claims 2 to 4, wherein the center line between the pair of cut and raised pieces is a line connecting each corner of the polygonal metal plate and the center point of the metal plate. Since it is cut and raised so as to be sandwiched, the maximum length of the cut and raised piece can be obtained within the same area in addition to the effect of any one of the first to fourth aspects, and as a result, the holding strength of the coaxial cable can be increased. There is an effect.
[0064]
According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the leg piece is integrally extended outward from the periphery of the metal flat plate, and is bent at a substantially right angle with respect to the plate surface of the metal flat plate. In addition to the effect of the invention according to any one of claims 1 to 5, since the attachment leg piece formed by bending the tip portion of the leg piece outwardly at a substantially right angle is provided, the height position is assembled by the coaxial cable. It is possible to determine the position where it is easy to wear, and there is an effect that the efficiency of workability can be improved.
[0068]
According to a seventh aspect of the invention, in any one of the claims 1 to 6, since the capacitance piece is formed by cutting and raising the metal flat plate, in addition to the effect of any one of the claims 1 to 6 Thus, by adjusting the cut-and-raising of the capacitive piece and changing the position with the coupling portion, there is an effect that the adjustment work of the high-frequency characteristics can be performed efficiently and the production cost of the capacitive piece is low.
[Brief description of the drawings]
FIG. 1 is a top view showing a use state of a first embodiment of the present invention.
FIG. 2 is a top view of a metal flat plate that serves as an original plate of the shield plate.
FIG. 3A is a front view of the above-described shield plate.
(B) is a top view of the same shield plate.
(C) is a side view of the same shield plate.
4 is an enlarged cross-sectional view taken along line AA ′ of FIG. 3 (b). FIG.
FIG. 5 is an explanatory view of the positioning protrusions of the above.
FIG. 6 is a front view in which a part of one holding part is omitted.
FIG. 7 is an explanatory diagram of the capacitive piece of the above.
FIG. 8 is an explanatory diagram of another example of the holding unit.
FIG. 9 is an explanatory diagram of another example of the holding unit.
FIG. 10A is a top view of the main part of another example of the coaxial cable used in the above.
(B) It is a side view of the principal part of another example of the coaxial cable used for the same as the above.
FIG. 11 (a) is a top view of a coupling portion between a core wire and a relay terminal of another example coaxial cable used in the above embodiment.
(B) It is a side view of the coupling | bond part of the core wire and relay terminal of another example coaxial cable used for the same as the above.
(C) is a front view of the coupling | bond part of the core wire and relay terminal of another coaxial cable used for the same as the above.
FIG. 12A is a top view of the main part of another example of the coaxial cable used in the above.
(B) is the side view of the principal part of the other example of the coaxial cable used for the same as the above.
FIG. 13A is a top view of a coupling portion between a core wire and a relay terminal of another example of the coaxial cable used in the above embodiment.
(B) is the side view of the coupling | bond part of the core wire and relay terminal of another example coaxial cable used for the same as the above. (C) is a front view of the coupling | bond part of the core wire and relay terminal of the other coaxial cable used for the same as the above.
FIG. 14A is a top view of the main part of another example of the coaxial cable used in the above.
(B) is a side view of the principal part of the other example of the coaxial cable used for the same as the above.
FIG. 15A is a top view of a coupling portion between a core wire and a relay terminal of another coaxial cable used in the above embodiment.
(B) is the side view of the coupling | bond part of the core wire and relay terminal of the other example coaxial cable used for the same as the above.
(C) is the front view of the coupling | bond part of the core wire and relay terminal of the other coaxial cable used for the same as the above.
FIG. 16 is a top view of a metal flat plate serving as an original plate of a shield plate according to a reference example of the present invention.
FIG. 17A is a top view of the same shield plate.
(B) is one side view of a shield board same as the above.
(C) is a front view of a shield board same as the above.
FIG. 18 is a front view in which a part of the holding portion is omitted.
FIG. 19 is an enlarged sectional view taken along line AA ′ of FIG. 17 (a).
FIG. 20 is a top view showing a use state of the above.
FIG. 21 is an explanatory diagram of a wiring state of a coaxial cable in a conventional high-frequency unit.
FIG. 22 is an explanatory view showing a coupling state between the coaxial cable and the relay.
FIG. 23 (a) is a top view of the coupling portion between the core wire and the relay terminal of the coaxial cable used in the above.
(B) is a side view of the coupling part of the core wire and relay terminal of the example coaxial cable used in the above.
(C) is the front view of the coupling | bond part of the core wire and relay terminal of a coaxial cable used for the same as the above.
[Explanation of symbols]
2 Relay 2a Metal plating case 3 Relay terminal 4 Coaxial cable 4a Core wire 4b Shield part 8 Ground plate 10 Shield plates 12a to 12c Holding part 13 Arrangement part 14 Bending pieces 15a to 15c Cut and raised pieces 16 Positioning protrusion 16a Center through hole 17 Capacity Fragment

Claims

It is integrally formed on a single metal flat plate by punching and bending, and is provided integrally with the holding portion for holding the coaxial cable and the metal flat plate, and the direction orthogonal to the plate surface of the metal flat plate is the axial direction, A cylindrical positioning projection for positioning by contacting the end face of the shield portion of the coaxial cable to the peripheral surface, and a connection projecting upward from the center of the cylindrical positioning projection and connecting the core wire of the coaxial cable A shield plate structure comprising: a coupling portion including terminals; and a capacitor piece provided on the metal flat plate in the vicinity of the coupling portion .

2. The shield plate structure according to claim 1, wherein the holding portion is composed of a pair of cut and raised pieces in parallel, and the coaxial cable is held between the cut and raised pieces.

The shield plate structure according to claim 2, wherein the distance between the distal ends of the pair of cut and raised pieces is narrower than the distance between the proximal ends.

4. A shield plate structure according to claim 2 or 3, wherein ribs are formed to project oppositely from the front end facing surfaces of the pair of cut and raised pieces.

The shield according to any one of claims 2 to 4, wherein the center line between the pair of cut and raised pieces is a line connecting each corner of the polygonal metal flat plate and the center point of the metal flat plate. Board structure.

A mounting leg piece formed by extending a leg piece outward from the periphery of the metal flat plate, bending it at a substantially right angle with respect to the plate surface of the metal flat plate, and bending the tip of the leg piece outward at a substantially right angle. The shield plate structure according to claim 1, wherein the shield plate structure is provided.

7. The shield plate structure according to claim 1, wherein the capacitor piece is formed by cutting and raising the metal flat plate .