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JP3809744B2 - Coaxial relay - Google Patents

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Publication number
JP3809744B2
JP3809744B2 JP11718699A JP11718699A JP3809744B2 JP 3809744 B2 JP3809744 B2 JP 3809744B2 JP 11718699 A JP11718699 A JP 11718699A JP 11718699 A JP11718699 A JP 11718699A JP 3809744 B2 JP3809744 B2 JP 3809744B2
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JP2000307302A (en
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厚 仲畑
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、無線通信装置等に用いられる同軸リレーに関するものである。
【０００２】
【従来の技術】
マイクロ波と線路をスイッチングするために用いる同軸リレーとしては特開昭５８−２０２６０１号公報等に示されるものがある。
【０００３】
図８は、ラッチングリレー型の同軸リレーの従来例を示しており、この従来例は、図示するようにダイキャスト或いは切削加工により形成され、下面より上面に貫通させた３つの取り付け孔１０３…の下部内に形成した雌ねじ部に３個のＳＭＡ型の同軸コネクタ１０１ａ〜１０１ｃを螺着し、各同軸コネクタ１０１ａ〜１０１ｂの各中心導体１０２の先端を同軸の固定接点として上面に露出させた金属製ベース１００と、該ベース１００に積層されるダイキャスト或いは切削加工により形成された金属製サブベース１０７と、ベース１００の上面の凹平面１０８内に配置され、中央の同軸コネタク１０１ｂの中心導体１０２の上端面と、一端（左端）側の同軸コネクタ１０１ａの中心導体１０２の上端面とに両端を接触・開離するコンタクト１０４の中央部に下端を熱着したテフロン樹脂製の駆動体１０５をサブベース１０７に上下移動自在に貫挿するとともに、該駆動体１０５の上端頭部とサブベース１０７の上面との間にコイルばね１０６を介在させて上方へ駆動体１０５を押し上げるようにした第１のコンタクトブロック１０９ａと、ベース１００の上面の凹平面１０８内に配置され、中央の同軸コネタク１０１ｂの中心導体１０２の上端面と、他端（右端）側の同軸コネクタ１０１ｃの中心導体１０２の上端面とに両端を接触・開離するコンタクト１０４に下端を熱着したテフロン樹脂製の駆動体１０５をサブベース１０７に上下移動自在に貫挿するとともに、該駆動体１０５の上端頭部とサブベース１０７の上面との間にコイルばね１０６を介在させて上方へ駆動体１０５を押し上げるようにした第２のコンタクトブロック１０９ｂとで高周波ブロックを構成している。
【０００４】
また平板状の継鉄１１０の両側部において夫々励磁コイル部１１１の鉄心１１２の上端を貫挿固定し、これら励磁コイル部１１１の間の継鉄１１０の中央部下面に一端の磁極面を接合し、励磁コイル部１１１に並行するように垂下された直方体状の永久磁石１１３等で電磁ブロック１１４を構成している。
【０００５】
この電磁ブロック１１４は継鉄１１０の両端部と、サブベース１０７の両端部との間に夫々スペーサ１１５を介在させて、継鉄１１０の両端部の挿通孔１１６と、スペーサ１１５の透孔と、サブベース１０７の両端部の挿通孔１１７に挿通させた固定ねじ１１８，１１９をベース１００の両端上面に開口したねじ孔１２０に螺入して固定保持される構造となっている。
【０００６】
この電磁ブロック１１４の磁気作用により回動される磁性体からなる接極子１２１はサブベース１０７の中央に突出させた突部１２２に回動軸１２１ａにより中央部が回動自在に枢支され、中央部上面を永久磁石１１３の他端の磁極面に対向させるとともに、両端部の上面を励磁コイル部１１１の鉄心１１２の下端の磁極面に対向させている。
【０００７】
そして一方の固定ねじ１１８は継鉄１１０の上方に配置されるプリント基板１２３の一端に貫挿してプリント基板１２３の上下面をナット１２５，１２５で挟むようにして保持し、また更にこのプリント基板１２３の上方に配置されるプリント基板１２４の一端に更に貫挿してプリント基板１２４の上下面をナット１２６，１２６で挟むようにして保持している。
【０００８】
プリント基板１２３の上面には中央がプリント基板１２３に固定され両端が自由端となったインディケートばね１２７とインディケートばね１２７の自由端に対向した固定接点１３１とが配設され、プリント基板１２４には電磁ブロック１１４の励磁回路が配線され、リード線１３０により、ベース１００上に被着される金属製カバー１２８の天井面に設けた端子１２９に接続して外部回路に接続されるようになっている。
【０００９】
各励磁コイル部１１１の鉄心１１２の中心には非磁性体で絶縁体からなるピン１３２が上下動自在に貫挿されており、このピン１３２は上端をプリント基板１２３に貫通させて上記インディケートばね１２７の中央の固定点より自由端側の下面に夫々対向させ、下端を接極子１２１の端部上面に夫々対向させている。
【００１０】
而して図８に示す状態では左側の励磁コイル部１１１では永久磁石１１３，継鉄１１０、鉄心１１２、接極子１２１，永久磁石１１３の閉磁路で永久磁石１１１３の磁束が流れて接極子１２１の左端部を鉄心１１２の磁極面に吸着保持し、接極子１２１の左端部でピン１３２を押し上げ、対応するインディケートばね１２７の自由端を固定接点１３１より開離させている。そしてコンタクトブロック１０９ａでは駆動体１０５がコイルばね１０６により上方に押し上げられ、同軸コネクタ１０１ａ，１０１ｂの中心導体１０２の上端面より対応するコンタクト１０４が開離し、両同軸コネクタ１０１ａ，１０１ｂ間をオフしている。
【００１１】
一方図において、接極子１２１の右側においては、コンタクトブロック１０９ｂの駆動体１０５がコイルばね１０６のばね付勢に抗して接極子１２１の右端部の下面で押し下げられ、同軸コネクタ１０１ｂ，１０１ｃの中心導体１０２の上端面に対応するコンタクト１０４が接触して、両同軸コネクタ１０１ａ，１０１ｂ間をオンしている。接極子１２１の右端部に対応するピン１３２は下方に移動し、該ピン１３２に対応するインディケートばね１２７の自由端は固定接点１３１にばね力で接触している。
【００１２】
このような状態において、右側の励磁コイル部１１１の鉄心１１２に接極子１２１の右端部が吸引される方向に右側の励磁コイル部１１１に励磁電流を流すｒと、接極子１２１が図において反時計方向に回動して、コンタクトブロック１０９ａ，１０９ｂの状態を反転させるとともにインディケートばね１２７の状態を反転させる。そして接極子１２１の右端部が右側の励磁コイル部１１１の鉄心１１２の磁極面に吸着された後、励磁電流を遮断しても、永久磁石１１３，継鉄１１０、鉄心１１２、接極子１２１、永久磁石１１３の閉磁路により接極子１２１はその吸着状態が保持されることになる。
【００１３】
このようにして励磁コイル部１１１、１１１の励磁コイルに流す励磁電流の方向により接極子１２１を反転させることにより、同軸コネクタ１０１ａと１０１ｂとの間、同軸コネクタ１０１ｂと１０１ｃの間をコンタクトブロック１０９ａ、１０９ｂのコンタクト１０４，１０４でオン・オフさせることができるのである。
【発明が解決しようとする課題】
ところで従来の同軸リレーはコンタクトブロック１０９ａ、１０９ｂの駆動体１０５を駆動する接極子１２１が、電磁ブロック１１４側とは分離した高周波ブロック側に配設される構造であるため、組立ばらつきや部品のばらつきの影響を受けて、接極子ストロークが安定しないという問題があった。
【００１４】
特に電磁ブロック１１２をねじを用いてベース１０１に対する固定と高さ位置を決めるため組立によるばらつきが生じ、接極子ストロークのストロークが安定しないという問題があり、そのためねじによる組み立てのやり直しを繰り返して行っていたため生産性が悪いという問題があった。
【００１５】
また板状の継鉄１１０に永久磁石１１３を接着接合する構成であるため、接極子１２１の中央部に対向させる磁極までの長さが長くなり、結果永久磁石１１３の体積が大きくなって、永久磁石１１３のコストが高くなるという問題があった。また永久磁石１１３の中心と継鉄１１０の中心とを合わせる位置決めが難しく、また永久磁石１１３が傾くと、下端の磁極位置の変位が大きくなり、動作特性に影響を与えるという問題があった。また動作状態確認のためのインディケート部位の機構が複雑で部品点数が多く、しかもインディケートばね１２７を配設するプリント基板１２３を収納するスペースを上方に設ける必要があるためリレー高さが高くなるという問題があった。
【００１６】
また接極子１２１のストロークやコンタクトブロック１０９ａ，１０９ｂの押し込み量の調整と、動作特性を調整する場合、電磁ブロック１１４を取り外して調整する必要があり、更に電磁ブロック１１４のねじ固定の具合で接極子１２１のストローク、コンタクトブロック１０９ａ，１０９ｂの押し込み量、動作特性、更にサブベース１０７をベース１００から外すために高周波特性を含めて全て一度に合わせる必要があり、また高さ調整のためには複数のねじの調整を行わなければならず、非常に作業性が悪かった。
【００１７】
またインディケートばね１２７を動かすためのピン１３２が鉄心１１２の中心透孔の内面と摩擦したり、更にインディケートばね１２７との摩擦、接極子１２１との摩擦などで動作が不安定となるという問題があった。
【００１８】
またカバー１２８は金属製で絞り加工により製作されていたため、深いカバーの製作が難しく、コストも高いという問題があり、しかも端子１２８とカバー１２８との間の絶縁を図る必要があり、そのため絶縁部品の組込などが必要で、その上カバー１２８をサブベース１０７に接着・接合するため、作業性が悪いというという問題があり、またカバー１２８のアースが確実にとれない等の問題があった。
【００１９】
本発明は上述の問題点に鑑みて為されたもの、その目的とするところは、組立性が良く、しかも安定した動作が得られる同軸リレーを提供するにある。
【００２０】
【課題を解決するための手段】
請求項１の発明では、３つの同軸の固定接点を備えるとともに中央の固定接点と一端の固定接点との間及び中央の固定接点と他端の固定接点との間に対して夫々近接・離反自在に配置されるコンタクトを持つ第１、第２のコンタクトブロックを備えた金属製の高周波ブロックと、非磁性材からなるフレーム内に固定配置され、フレームを高周波ブロック上に固定することで高周波ブロック上に配置される電磁ブロックと、フレームの両側片の中央部の下部に回動自在に支持され、電磁ブロックの磁気作用により中央部を回動中心として回動して、この回動により高周波ブロック側に近接する側の端部に対向する一方のコンタクトブロックを押動し、離反する端部に対向する他方のコンタクトブロックの押動を解除する接極子と、フレーム上方に配置され電磁ブロックの励磁用の回路を少なくとも設けたプリント基板とを備え、電磁ブロック、接極子を含むフレーム及びプリント基板を収納するように高周波ブロックにカバーを被着して成ることを特徴とする。
【００２１】
請求項２の発明では、請求項１の発明において、フレームは、非磁性金属板の打ち抜き・曲げ加工により天井片と、該天井片の両側より下方に垂下した側片とを有し、側片の下部を高周波ブロックに溶接固定して成ることを特徴とする。
【００２２】
請求項３の発明では、請求項１又は２の発明において、電磁ブロックは、フレームの天井片の内側面にかしめ固定される継鉄と、継鉄の両端部の下面に夫々鉄心の一端をかしめ固定し、該鉄心周囲に励磁コイルを巻装して継鉄の平板部に垂下配設された２組の励磁コイル部を備えて成ることを特徴とする。
【００２３】
請求項４の発明では、請求項３の発明において、継鉄は中央部の両側より側方へ延長された片を下方に略直角に折り曲げて形成せる垂下片部の下端部に永久磁石の上部を挟んで固定して成ること特徴とする。
【００２４】
請求項５の発明では、請求項４の発明において、継鉄の垂直片部の下端部の内側面には上向き面を持つ段部を形成し、この段部に垂直片部の板面に並行する永久磁石の上端縁の角部を当接して成ることを特徴とする。
【００２５】
請求項６の発明では、請求項５の発明において、接極子の短手方向の幅よりも長く、その中央部を接極子の中央部下面に固着して両端を接極子の両側に突出させた中央片と、該中央片の中央部の接極子の長手方向側の両端より接極子との間で間隙をあけながら接極子に沿って一体延長したばね片とからなる接触子ばねを備え、フレームの両側の側片の中央部に設けられた下向きリブを接極子の両側より突出した接触子ばねの中央片の部位に設けた孔に夫々挿入するとともに該孔近傍の接触子ばねの中央片の部位の上面にフレームの両側の側片の中央部に設けた下向きだぼを当接して接極子を永久磁石の磁力と共にフレームに支持して成ることを特徴とする。
【００２６】
請求項７の発明では、請求項１乃至６の何れかの発明において、電磁ブロックの長手方向の両端下部の両側より夫々側方に動作状態を示す信号を取り出すインディケート端子の固定接触片を夫々突出させるとともに、接極子の長手方向の両端部に、電磁ブロックの両端の両側より突出した対の上記固定接触片に、接極子の回動により接触・開離して対の固定接触片間をオンオフするインディケートばねの対の可動接触片を夫々突出させて成ることを特徴とすることを特徴とする。
【００２７】
請求項８の発明では、請求項７の発明において、インディケートばねを非磁性体金属材で形成し、電磁ブロックの各励磁コイル部の鉄心の磁極面に吸着される接極子の上面に磁極面と接極子の間に介在するレシジュアルプレートとして配設されることを特徴とする。
【００２８】
請求項９の発明では、請求項６乃至８の何れかの発明において、インディケートばねと接触子ばねとを同一厚みで同一金属材により形成したことを特徴とする。
【００２９】
請求項１０の発明では、請求項１乃至９の何れかの発明において、カバーを樹脂成型品で構成し、プリント基板に実装されるコネクタの端子を外部に導出する端子導出孔を設けたことを特徴とする。
【００３０】
請求項１１の発明では、請求項１０の発明において、カバーの長手方向の両端壁の下部に係止孔を設けるとともに、電磁ブロックの各励磁コイル部のコイルボビンにカバーの被着時に係止孔に係止される係止突起を設けて成ることを特徴とする。
【００３１】
【発明の実施の形態】
以下本発明を一実施形態により説明する。
【００３２】
本実施形態はラッチングリレーを構成するもので、図１，図２に示すように電磁ブロック２２や接極子ブロック２３をフレーム２７に組み込んだ駆動機構ブロック１と、この接極子ブロック２３の接極子２により駆動されるコンタクトブロック３ａ、３ｂを設けた金属製サブベース４及びコンタクトブロック３ａ、３ｂの各コンタクト５により開閉される固定接点を中心導体７の上端面で夫々構成するＳＭＡ型の同軸コネクタ６ａ〜６ｂを螺着した金属製ベース８からなる高周波ブロックと、駆動機構ブロック１の励磁回路やインディケート回路を設け、駆動機構ブロック１の上方に配設される基板ブロック２６と、下面開口の箱状のＬＣＰなどの合成樹脂成型品のカバー９とから構成される。
【００３３】
金属製ベース８は切削加工により形成されたもので、図３，図４に示すように底面より上面へ貫通せる３つの取り付け孔１０を長手方向に一定間隔で穿設しており、これら取り付け孔１０は雌ねじ部１０ａを下部に形成し、上端を金属製ベース８の上面に形成した凹平面８ａに開口させているもので、各取り付け孔１０の雌ねじ部１０ａに金属製ベース８の底面側からＳＭＡ型の同軸コネクタ６ａ〜６ｃを夫々螺着し、同軸コネクタ６ａ〜６ｃの各中心導体７を孔１０の上端開口より凹平面８ａ内に突出させてある。これら中心導体７の上端面は同一高さにあって固定接点を構成する。
【００３４】
同軸コネクタ６ａ〜６ｃは外周に雄ねじ部を形成した金属製の筒状の外殻導体１１と、外殻導体１１内部に挿着されたフッ素系樹脂製絶縁体１２と、該絶縁体１２の中心透孔内に挿着され、先部を外部へ突出させた中心導体７と、中心導体７の突出部位の基部付近に形成したくびれ部７ａを中心孔に圧入し、外殻導体１１の上端開口部に圧入される環状のＰＣＴＦＥ（３フッ化エチレン）からなるサブブッシング１３とで構成され、このサブブッシング１３はその材質の硬度で中心導体７の抜け及び回動を規制する保持力を確保する。外部導体１１は雄ねじ部の両側２カ所に外部導体１１の上端側開口した接着剤収容スペースを確保するための切り込み面１１ａを形成してある。接着剤は外部導体１１の雄ねじ部を取り付け孔１０の雌ねじ部１０ａに螺着する際に雌ねじ部１０ａとの螺着強度を確保するために用いるものであり、切り込み面１１ａでその接着剤がはみ出さないように収容スペースを確保する。
【００３５】
取り付け孔１０は図３に示すように雌ねじ部１０ａの深さをベース８の高さ寸法の略１／２（半分）に形成しており、螺合代を大きくすることで、上記の切り込み面１１ａによって接着剤の収容スペースを確保しながら、矢印Ｙ方向の強度を保つことができるようにしてある。
【００３６】
また雌ねじ部１０ａより上方の孔部１０ｂの内径を雌ねじ部１０ａの内径よりやや小さい寸法とすることにより、雌ねじ部１０ａの上端部と孔部１０ｂとの境界部を段部とし、該段部の下向き面に同軸コネタク６ａ〜６ｃの外殻導体１１とサブブッシング１３との境界部位付近の上面を当接し、この当接部位のサブブッシング１３の直径方向の寸法と、上記中心導体７のくびれ部７ａを嵌合する孔の周辺でくびれ部７ａ内の上下面に当接するサブブッシング１３の上下面の直径方向の寸法とを略同じ寸法とすることにより、高周波特性を確保しながら保持力のバランスとり、夫々の部位の内ａ、ｂの部位で矢印Ｘ方向の強度の確保を、またｃの部位で矢印Ｘ’方向の強度の確保を図り、同時に中心導体７の回動の防止を図っている。
【００３７】
かように上記のようＸ，Ｘ’，Ｙ方向の強度を確保することで、同軸コネクタ６ａ〜６ｃの保持力を確保し、また同軸ケーブルの接続時等の外力で部品がずれ高周波特性が変動・劣化するのを防止することができるのである。
【００３８】
サブベース４は金属板を打ち抜き加工することにより形成されたもので、その長手方向及び短手方向の寸法をベース８の対応する方向の寸法よりやや小さくしており、サブベース４をベース８の上面の定位置に取り付けたときに、その周囲にカバー９の下端面を載置するためのベース８の上面が確保できるようになっている。またサブベース４の下面はベース８の上面に接触するためにその平面度を確保する必要があるが、板状であるため研磨にラッピング加工を用いることができる。
【００３９】
そしてこのサブベース４はベース８上の定位置に取り付けた際に同軸コネクタ６ａの中心導体７と、同軸コネクタ６ｂの中心導体７との間の中間及び同軸コネクタ６ａの中心導体７と同軸コネクタ６ｂの中心導体７との間の中間に対応する位置に上下に貫通する貫通孔１４，１４を穿孔してある。これらの貫通孔１４，１４には、上端がサブベース４の上面側に配置されたコンタクトばね１５，１５に熱着結合して常時上方へ付勢されるＬＰＣ（全芳香族液晶ポリマー）樹脂製駆動体１６、１６を上下方向移動時自在に貫挿してある。
【００４０】
これらの駆動体１６、１６はサブベース４の下面側に突出せる下端にインサート（同時）成形により平板状の導電体からなるコンタクト５、５の中央部を結合固定して、コンタクトばね１５，１５と併せてコンタクトブロック３ａ、３ｂを夫々構成している。これらのコンタクトブロック３ａ，３ｂの各コンタクト５は駆動体１６が上下移動することによりベース８の凹平面８ａ内で上下移動するようになっており、コンタクトブロック３ａのコンタクト５は両端下面は凹平面８ａ内に突出した同軸コネクタ６ａ，６ｂの中心導体７，７の上端面に対向し、コンタクトブロック３ｂのコンタクト５の両端下面は凹平面８ａ内に突出した同軸コネクタ６ｂ，６ｃの上端面に対向し、コンタクトブロック３ａのコンタクト５は下方向への移動時に同軸コネクタ６ａ，６ｂの中心導体７，７の上端面に接触して同軸コネクタ６ａ，６ｂ間をオンし、コンタクトブロック３ｂのコンタクト５は下方向への移動時に同軸コネクタ６ｂ，６ｃの中心導体７，７の上端面に接触して同軸コネクタ６ｂ，６ｂ間をオンするもので、両コンタクトブロック３ａ，３ｂのコンタクト５による上記接触は、駆動機構ブロック１の接触子２により交互に切り替えられる。従って同軸コネクタ６ｂの中心導体７が共通端子となり、この共通端子側と接続される同軸コネクタを６ａと６ｂとに交互に切り替えることになる。
【００４１】
ここでコンタクトブロック３ａ、３ｂの駆動体１６の材質として耐熱性が特に優れているＬＰＣ樹脂を用いるので、コンタクト５の発熱に耐えることができ、その結果接点部に流せる電力を大きくすることができる。またインサート成形によりコンタクト５を駆動体１６に結合固定しているためコンタクト５の駆動体１６への密着は安定し、またインサート成形の金型によりコンタクト５の位置決めを行うため、コンタクト５の傾き等も無くなり、また固定部位の寸法（体積）、位置、形状などが金型精度により安定し、機械的な開閉を含めて高周波特性が安定する。また駆動体１６は成形加工のため安価に製作できる。ここで駆動体１６との結合固定されるコンタクト５の孔の断面形状を図４に示すように角形として回動防止を図っている。また高周波マッチングを貫通孔１４を変形することで調整変更するようにすれば、高周波マッチングの変更が容易となる。
【００４２】
コンタクトブロック３ａ、３ｂの駆動体１６を付勢するコンタクトばね１５は，金型による打ち抜き且つ曲げ加工により日字型に形成されたもので、中央片１５ａの中央部をその両端よりも高い位置に位置させるように中央片１５ａを折り曲げるとともに、中央片１５ａに並行する両端片１５ｂ、１５ｂをその中央部が両端よりも低い位置となるように折り曲げて形成しており、中央片１５ａの中央部に設けた挿通孔１８に下方から駆動体１６の上端部１６ａを貫挿して熱着固定し、両端片１５ｂの中央部に設けた挿通孔（図示せず）に固定ねじ１７を上方から挿通させるようになっている。
【００４３】
ここでコンタクトばね１５の押さえとなる上端部１６ａより下部の駆動体１６の径は、コンタクトばね１５の挿通孔１８の内径より大きければ良く、そのため、小さな径の熱着形状が可能となる。また上端部１６ａの先端は接触子ばね１９に接触する部分の摩擦を小さくする形状、図示するように接触面積を小さくしたり、Ｒ面を形成することができる。また熱着部位の体積は駆動体１６の上端部１６ａの高さで調整できもので、駆動体１６の成形金型の精度が良いため、がたも無くすことができる。
【００４４】
一方コンタクトばね１５は、両端片１５ｂの中央部を貫通させた固定ねじ１７をサブベース４に形成せる挿通孔を介してベース８側のねじ孔２１に螺入締結することにより、サブベース４とともにベース８に固定されるようになっており、固定ねじ１７をサブベース４の固定用ねじと兼用して作業性を良くしている。
【００４５】
さてコンタクトばね１５は、日型に形成された左右対称形状であって両端片１５ｂ、１５ｂの中央部を固定する構成であるため、中央片１５ａの上方の変位は可能であるが、両側方へのぶれはほとんどなく、また打ち抜き・曲げ加工の金型寸法で押し上げ力も決まるため安定し、結果押し上げ方向が安定し、安定動作が実現できるものである。しかも１部品で単純な形状であるため部品生産性も良いものである。
【００４６】
かようにコンタクトばね１５の上方への安定した押し上げが確保できるため、サブベース４の貫通孔１４によるコンタクトブロック３ａ，３ｂの駆動体１６，１６の方向規制が不要となり、そのため駆動体１６と貫通孔１４の内面との隙間を大きくすることで、この部分での摩擦を無くすことができ、結果動作がより安定することになる。またコンタクトばね１５をサブベース４にねじ固定する方法を採用することで、特性調整のための交換を容易としている。
【００４７】
ここで図３に示すようにコンタクトブロック３ａ、３ｂのコンタクト５の下面より下方に突出する駆動体１６の下端の寸法αは、成形金型の精度で決まって一定である。一方この駆動体１６の下方移動時の逃げとして設けられるベース４の凹平面８ａ内に設けた円形状の凹部２８の深さ寸法βとでコンタクトブロック３ａ，３ｂの中心部のインピーダンスのずれを最適化することが可能となる。また図４に示すようにコンタクトブロック３ａ，３ｂの中心部と、凹部２８の断面形状とを同心円形状にすることでインピーダンスマッチングを最も取りやすくしてある。尚図４中γは凹部２８の直径を、γ’はコンタクブロック３ａ，３ｂの中心部の直径を示す。
【００４８】
駆動機構ブロック１は、電磁ブロック２２と、接極子２及び接触子ばね１９からなる接極子ブロック２３と、これら電磁ブロック２２、接極子ブロック２３、を保持するフレーム２７とで構成される。
【００４９】
駆動機構ブロック１の主要な構成部材である電磁ブロック２２は、継鉄２９、２組の励磁コイル部３０、永久磁石３２等で構成される。継鉄２９は磁性軟鉄などの磁性体を打ち抜きと曲げ加工により形成されたもので、平板部２９ａと、この平板部２９ａの長手方向の中央部より下方に折り曲げて垂下させた垂下片部２９ｂとからなり、平板部２９ａの長手方向の中心より対称となる両端部位置に設けた孔に夫々励磁コイル部３０の鉄心３１の上端を挿入してかしめ固定して、励磁コイル部３０を垂下配設し、垂下片部２９ｂ，２９ｂの下端間には永久磁石３２を橋絡配設してある。
【００５０】
この配設は、垂下片部２９ｂの板幅とともに、垂下片部２９ｂの下端に形成して段部３４に板状の永久磁石３２の両側上端縁を係合させることにより、永久磁石３２を位置決めすることで行われる。
【００５１】
ここで垂下片部２９ｂはその中心と平板部２９ａの中心とが一致し、中心から見て両側縁までの夫々距離が等しく形成され、ラッチングリレーを構成する本実施形態では永久磁石３２として図５に示すように垂下片部２９ｂの両側縁に亘る幅を有し且つ上下面に磁極を有するものを用いている。
【００５２】
以上のような永久磁石３２の取り付け構造を採用することにより、板状の継鉄に永久磁石の上端を接着固定して永久磁石を垂下させる場合に比べて永久磁石３２の体積が小さくなりコストが安価となる。また永久磁石を直接継鉄の中心部に接着する場合には中心の位置決めが難しくしかも永久磁石が傾いた場合永久磁石先端の磁極での変位が大きく動作特性に影響があるが、本実施形態のように継鉄２９の垂下片部２９ｂ、２９ｂ間に永久磁石３２を取り付ける場合、永久磁石３２の傾きは継鉄２９の加工精度で決まる。つまり継鉄２９の傾きは打ち抜き、曲げ加工の金型で決まるため、その傾きは小さく且つ寸法精度が安定しているため後述する接極子２のストロークが安定し、消費電力の低減が図れる。また磁気回路として磁気抵抗の小さい継鉄２を中心として構成するため、磁気抵抗の大きな永久磁石３２が小さくても同等以上の磁力を確保できる磁気回路を構成できる。
【００５３】
励磁コイル部３０は鉄心３１を貫挿したコイルボビン３３に励磁コイル３５を巻回して構成され、夫々の励磁コイル部３０のコイルボビン３３の上側の鍔部３３ａより励磁コイル３５の両端に接続した一対のコイル端子３６，３６を突出してある。これらコイル端子３６，３６は突出基端より先部を上方へ延長して上端を継鉄２９の平板部２９ａより上方に突出している。また下側の鍔部３３ｂの外側端部には一対のインディケート端子３７，３７の下部を固定する固定台３３ｃを設け、これらインディケート端子３７，３７を支持している。これらインディケート端子３７，３７は並行する形で、電磁ブロック２２の空きスペースを利用して上方に延設されており、上部が上側鍔部３６ａの上記コイル端子３６，３６の突出部間にて保持される形で、上端を継鉄３９の平板部３９ａより上方へ突出してある。一対のインディケート端子３７，３７は下端部を両側方向に折り曲げ突出して固定接触片３８，３８を形成し、この一対の固定接触片３８，３８と接触子２の両端端上面に夫々取り付けたインディケートばね３９の両側の可動接触片４０，４０が接極子２の回動により接触開離することにり、オン、オフして対応する側のコンタクトブロック３ａ或いは３ｂのコンタクト５による同軸コネクタ６ａ，６ｂ間或いは６ｃ、６ｂ間のオン、オフ状態を示す信号を取り出すことができるようなっている。
【００５４】
従って本実施形態の構造では、従来のようにインディケート接点を電磁ブロックの上方に配置し、励磁コイルの鉄心の中心透孔に、接極子の回動により上下動するピンを入れて該ピンの上端でインディケート接点を開閉する構造のように、リレー高さを高くすることがなく、またインディケート部位の実装のためのプリント基板やピンが不要で、しかもピンと鉄心の中心透孔との間等で発生する摩擦が無くなり、動作も安定する。
【００５５】
ここでインディケート端子３７と上記インディケートばね３９を同一厚さの同一材料（非磁性体の導電材）から同時に打ち抜き加工で取り出すようにすることで、金型の共通化とともに生産性の向上を図っている。
【００５６】
各インディケートばね３９は励磁コイル部３０の鉄心３１の下端の磁極面に対向して吸着される接極子２の端部上面に板面を溶接接合して固定され、レシジュアルプレートを兼ねている。また可動接触片４０の部位は金メッキ又はインレイをテープ状に行っている。
【００５７】
接触子ブロック２３は、磁性体からなる接極子２と、接極子２の両端上面に溶接接合に固定したレシジュアルプレート兼用のインディケートばね３９，３９と、下面に取り付けられる接触子ばね１９とで構成され、接触子ばね１９は接極子２の長手方向に直交する方向に形成された中央片１９ｂと、この中央片１９ｂの中央両側より、接極子２の長手方向に並行するように一体形成した一対のばね片１９ａと、両ばね片１９ａの端部両側より側方へ一体突出したばね調整用突片４１とからなるもので、中央片１９ｂは上方に突出するように断面が略コ状に形成され、接極子２の下面側に突出形成しただぼ（図示せず）を中央部に形成した孔（図示せず）に上方より挿入してかしめることにより、接極子２下面中央に固定され、その両端を接極子２の両側へ突出させている。この状態で中央片１９ｂの両側のばね片１９ａと接極子２の下面との間にはばね片１９ａが撓むことができる間隙が形成され、また各突片４１は接極子２の両側より外側方向へ突出してばね調整ができるようになっている。上記中央片１９ｂの接極子２の両側より突出せる両端部には後述するフレーム２７から突出させたリブ４３が遊嵌される角孔４２を設けてある。
【００５８】
フレーム２７は、非磁性体の金属板を打ち抜き・曲げ加工して形成されたもので、天井片２７ａと、天井片２７ａの短手方向の両側端より下方に向けて折り曲げ形成した側片２７ｂ、２７ｂとを備え、天井片２７ａと両側片２７ｂ、２７ｂの空間内に上記のようにように構成された電磁ブロック２２を収納し、さらにこの電磁ブロック２２の下方に上記のように構成され接極子ブロック２３を配置する。
【００５９】
電磁ブロック２２のフレーム２７に対する取り付けは継鉄３９の上面の４隅に下面から押圧して上方に突出させただぼ４４を、天井片２７ａ側に対応させた形成した挿通孔４５に下方より挿入して、継鉄３９の上面を天井片２７ａの下面に当接し、この状態で挿通孔４５より突出しただぼ４４をかしめ固定することで行われる。このとき電磁ブロック２２の両端より上方へ突出したコイル端子３６及びインディケート端子３７は夫々天井片２７ａの両端に形成した切欠４６より天井片２７ａより上方に突出することになる。また各励磁コイル部３０の鉄心３１の上端部は天井片２７ａに対向するように設けられた逃げ用孔４７内に嵌まることになる。
【００６０】
電磁ブロック２２の永久磁石３２の下面よりやや下方に位置する両側片２７ｂ、２７ｂの中央下端には内向き方向に折り曲げて突片４８、４８を形成し、この突片４８，４８間に接極子２を嵌めるとともに突片４８，４８の先端より更に下向けに折り曲げ形成したリブ４３を接極子２の中央両側より突出している接触子ばね１９の中央片１９ｂの両端部の角孔４２に上方から遊嵌して、接極子２の両側より突出している接触子ばね１９の中央片１９ｂの両端部の上面を突片４８，４８の下面に突出させただぼ４９に揺動自在当接する。このとき永久磁石３２の磁力により上向きに接極子ブロック２３は引っ張られるためリブ４３が角孔４２から脱落することなく、接極子ブロック２３はフレーム２７に保持されることになり、品質も安定する。
【００６１】
かような接極子ブロック２３の保持構造を採用することにより溶接やかしめ治具が不要で手組みが可能となり生産性を向上させることができる。またリブ４３が接極子２の中央部側に設置されるため接極子２の回動による摺動がほとんどなく、つまりまさつが無く動作が安定する。さらに接触子ばね１９の角孔４２にリブ４３を遊嵌する構成であるため、接触子ばね１９のばね力がその部位に働くことが無く、まただぼ４９と接触子ばね１９の中央片１９ｂの下面との接触であるため両者の間でのまさつが殆ど無く、溶接固定などに比べて余分なばね力が働かず動作が安定する。
【００６２】
以上のように電磁ブロック２２，接極子ブロック２７をフレーム２７に組み込むことで駆動機構ブロック１が完成する。
【００６３】
この駆動機構ブロック１を高周波ブロック上へ配設固定は次のように行う。つまりフレーム２７の両側片２７ｂの両端下部より下方に一体突出してある脚片５３の段部５３ａをサブベース４の４隅に形成してある凹欠部５４に嵌めて、段部５３ａの下向き面をサブベース４の上面に乗せて高さの位置決めを行い、この状態で脚片５３の下端側面５３ａをサブベース４の側面に溶接固定するのである。
【００６４】
この配設固定により各コンタクトブロック３ａ，３ｂの駆動体１６の上端は対向する接触子ばね１９のばね片１９ａ、１９ａの下面に対向し、例えば図に示すように永久磁石３２，継鉄２９、励磁コイル部３０の鉄心３１とで閉磁路を形成して鉄心３１側に吸着されている接触子２の一端部側の接触子ばね１９のばね片１９ａに対向するコンタクトブロック３ａの駆動体１６の上端はばね片１９ａより離れ、一方吸着されていない側の接触子２の他端部側の接触子ばね１９のばね片１９ａに対向するコンタクトブロック３ｂの駆動体１６の上端はコンタクトばね１５の上向き付勢に抗し、ばね片１９ａを介して接極子２により下方に押し動かされた状態となる。つまりコンタクトブロック３ａはコンタクトばね１５により上方に付勢されて駆動体１６が上方向に移動して、コンタクト５の両端を同軸コネクタ６ａ，６ｂの中心導体７の上端面より開離した状態にあり、他方のコンタクトブロック３ｂは駆動体１６が下方向に移動して、コンタクト５の両端を同軸コネクタ６ｂ，６ｃの中心導体７，７の上端面に接触した状態にあり、同軸コネクタ６ａ，６ｂ間がオフ、同軸コネクタ６ｂ，６ｃ間がオンとなっている。
【００６５】
ここで本実施形態の電磁ブロック２２及び接極子ブロック２３はフレーム２７の一部品で全て位置決めされるため、寸法精度が安定し、生産性が向上する。
【００６６】
またフレーム２７への固定は全てねじ無しで、かしめや溶接により行うため高さ方向の寸法精度が安定し、精度のばらつきによる組み替えが不要となる上にねじ部の接着剤塗布も不要になり組立作業性が向上する。
【００６７】
更にフレーム２７は金型精度で寸法や曲げが安定しており、電磁ブロック２２の寸法安定とともにフレーム２７を高周波ブロックのサブベース４に溶接するため、高さ寸法がフレーム２７の一部品で決めることができる。また高周波ブロックに駆動機構ブロック１を積み上げる構造であるため、組立工程が単純となる。
【００６８】
更に高周波の開閉を行うための同軸コネクタ６ａ〜６ｃを取り付け、コンタクトブロック３ａ，３ｂを取り付けたベース８及びサブベース４からなる高周波ブロックと駆動機構ブロック１とは分離された形でブロック化されて組み込まれる構造であるため、高周波特性を高周波ブロックのみで調整でき、駆動機構ブロック１側の動作特性も高周波ブロック側とは別に調整でき、そのため調整作業が容易で生産性を向上させることができる。また接極子２のストロークはフレーム２７と鉄心３１の位置で決まるため、鉄心かしめの治具で寸法を合わせることで調整できる。更にまたコンタクトブロック３ａ，３ｂの押し込み量、つまりコンタクト５が同軸コネクタ６ａ，６ｂ又は６ｂ，６ｃの中心導体７の上面に当接してからのオーバートラベル量は組立後、接触子ばね１９の曲げをばね調整用突片４１を用いて調整することで行う。この場合接触子ばね１９のばね片１９ａの先端が接極子２の下面に当てることもできるため、調整できる幅が広い。
【００６９】
また更に所定の励磁電圧を励磁コイル部３０に印加したときの動作特性の調整は最終的にインディケートばね３９の可動接触片４０に接触するインディケート端子２７の固定接触片３８の曲げにより調整する。ばね調整用突片４１及び固定接触片３８はフレーム２７などの他の部品が調整時に邪魔にならないように形成してある。
【００７０】
尚本実施形態の場合基本的には各部品とその位置決めの寸法精度が向上しているため略無調整化が実現できた。
【００７１】
さて上記のように高周波ブロック上に駆動機構ブロック１を配設固定した後に、基板ブロック２６をフレーム２７上方に配設する。
【００７２】
この場合フレーム２７の天井片２７ａの上方に突出したコイル端子３６の先端及びインディケート端子３７の先端を、基板ブロック２６のプリント基板２４に夫々対応するように設けた取り付け孔５０、５１に下方から挿入してプリント基板２４に半田付けし、プリント基板２４を天井片２７ａの上方に配設固定するとともに、プリント基板２４に実装されている回路に電気的に接続する。
【００７３】
基板ブロック２６はプリント基板２４と、プリント基板２４の中央部に実装したコネクタ２５とで構成され、コネクタ２５は各励磁コイル部３０の駆動信号（励磁電流を含む）を外部回路から入力する端子と、外部へインディケート端子３７からの動作状態信号を外部へ出力する端子とを備えている。勿論ＴＴＬ駆動の場合にはプリント基板２４にＴＴＬ回路等を実装する。尚天井片２７ａの中央開口部５２はコネクタ２５の下面側の端子の逃げ用の開口部である。
【００７４】
上記のフレーム２７の配設固定が終了した後、ベース８上にカバー９を被着することで本実施形態の同軸リレーが完成することになる。
【００７５】
カバー９を被着するに当たっては、カバー９の天井面に設けてある端子導出孔５５にコネクタ２５の端子を内部から挿入してカバー９内に駆動機構ブロック１を収納しながらカバー９をベース８方向に移動させて、カバー９の下端を、そのカバー材料の弾性を利用して、励磁コイル部３０，３０のコイルボビン３３の固定台３３ｃの外側面に突出係止している係止突起５６の上端のテーパ面５６ａでガイドさせながらの係止突起５６を乗り越えさせ、カバー９の両側壁の下部に形成してある係止孔５７に係止突起５６を内側から係止してカバー９を固定するのである。この際カバー９の下端部はサブベース４の周囲のベース８上面に当接することになる。
【００７６】
このように本実施形態によれば、駆動機構ブロック１の高周波ブロック上への配設とともに、基板ブロック２６の積み上げ配設と、カバー９の上方からの被着により全体の組立工程が単純化されて組立性が向上する。
【００７７】
次に上記のように組立完成した本実施形態の動作を簡単に説明する。
【００７８】
図２において、接極子２の端部が鉄心３１の対向する磁極面から離れている側つまり右側の励磁コイル部３０の励磁コイル３５に接極子２の右端部の上面を吸引する方向の磁束を発生させる向きの励磁電流を流すと、接極子２の右端部が鉄心３１の対向する磁極面に吸引され、コンタクトブロック３ｂ側のコンタクトばね１５による駆動体１６の押し上げ力とで、図２において接極子２が反時計方向に回動する。
【００７９】
この回動により、コンタクトブロック３ｂ側の接極子２の右端部がインディケートばね３９を介して右側の励磁コイル部３０の鉄心３１の対向磁極面に吸着して、鉄心３１，継鉄２９，永久磁石３２，接極子２，鉄心３１の閉磁路が構成され、該接触子２の右端部が右側の励磁コイル部３０の鉄心３１の磁極面に吸着される。この状態は励磁電流が無くなっても永久磁石３２の磁束が閉磁路を流れるため保持されることになる。以上の動作によりコンタクトブロック３ｂ側のコンタクト５は同軸コネクタ６ｂ、６ｃの中心導体７，７の上端面より開離し、両同軸コネクタ６ｂ、６ｃ間をオフする。一方コンタクトブロック３ａ側では接極子２の反時計方向の回転により、接極子２の左端部が接極子ばね１９のばね片１９ａを介してコンタクトばね１５の押し上げ力に抗して駆動体１６を下方に押し込み、当該駆動体１６の下端のコンタクト５は同軸コネクタ６ａ，６ｂの中心導体７，７の上端面に接触して、同軸コネクタ６ａ、６ｂ間をオンする。またインディケート端子３７の固定接触片３８に接触していたコンタクトブロック３ｂ側のインディートばね３９の可動接触片４０が開離するとともに、インディケート端子３７の固定接触片３８から開離していたコンタクトブロック３ａ側のインディートばね３９の可動接触片４０が固定接触片３８に接触し、コネクタ２５を通じて外部に動作状態信号が出力されることになる。この動作状態信号により動作状態がモニタできるのである。
【００８０】
この反転状態からコンタクトブロック３ａ側、つまり図において左側の励磁コイル部３０の励磁コイル３５に接極子２の左端部を吸引する方向の励磁電流を流せば、上記と同様に反転動作して図２の状態に戻ることになる。
【００８１】
上述した構成は双安定型のラッチングリレーであったが、永久磁石３２の幅寸法を変えるだけでフェールセーフの単安定型のリレーを構成することができる。
【００８２】
つまり図６に示すように継鉄２９の長手方向に対応する永久磁石３２の幅を垂下片部２９ｂの幅より小さくして、片側に寄せるように配設すればよい。この場合左右二つの励磁コイル部３０の励磁コイル３５を直列接続して一つの励磁コイルを構成する。
【００８３】
図７はこの単安定型のリレー構造の実施形態の側面断面図を示す。この単安定型のリレーは次のように駆動される。図７の安定状態態において、右側の励磁コイル部３０の鉄心３１の磁極面に接極子２の右端部が吸引されるように両励磁コイル部３０，３０の励磁コイル３５、３５に励磁電流を流すと、左側の鉄心３１と接極子２の左端部との間で発生する反発力によってコンタクトブロック３ａ側の接極子２の左端部には下向きの力が、コンタクトブロック３ｂ側の接極子２の右端部端には吸引力とコンタクトばね１５による駆動体１６の押し上げ力が働いて接極子２が反時計方向に回動する。
【００８４】
そして接極子２の右端部が右側の励磁コイル部３０の鉄心３１の磁極面にインディケートばね３９を介して接触すると、該右側の励磁コイル部の鉄心３１，継鉄２９，永久磁石３２，接極子２，鉄心３１の閉磁路が構成され、接極子２の他端は右側の励磁コイル部３０の鉄心３１の下端に吸着された状態となる。
【００８５】
この状態では下方移動した接極子２の左端部でコンタクトブロック３ａの駆動体１６をコンタクトばね１５の押し上げ力に抗して押し込んでコンタクト５を同軸コネクタ６ａ、６ｂの中心導体７，７上端面に接触させ、同軸コネクタ６ａ，６ｂ間をオンする。またコンタクトブロック３ｂの駆動体１６は接極子２の右端部の上方移動により、コンタクトばね１５のばね力で押し上げられ、コンタクト５を同軸コネクタ６ｂ，６ｃの中心導体７，７の上端面より開離し、同軸コネクタ６ｂ，６ｃ間をオフする。またインディケート端子３７の固定接触片３８に接触していたコンタクトブロック３ｂ側のインディートばね３９の可動接触片４０が開離するとともに、インディケート端子３７の固定接触片３８から開離していたコンタクトブロック３ａ側のインディートばね３９の可動接触片４０が固定接触片３８に接触し、コネクタ２５を通じて外部に動作状態信号が出力されることになる。
【００８６】
この動作状態は励磁コイル部３０の励磁コイル３５に励磁電流を流している状態で維持されることになるが、励磁電流をオフすると、図７の状態に復帰する。つまり永久磁石３２がコンタクトブロック３ａ側の偏倚しているたため、コンタクトブロック３ｂ側では永久磁石３２，接極子２，右側の励磁コイル部３０の鉄心３１，継鉄２９，永久磁石３２の磁路に流れる永久磁石３２の磁束による吸引力とコンタクトブロック３ａのコンタクトばね１５による駆動体１６の押し上げ力との合成力の方が接極子２の右端部に対する吸引力よりも大きく、その結果接極子２は時計方向に回動して、左端部が上方へ移動して接極子２の左端部が左側の励磁コイル部３０の鉄心３１にインディケートばね３９を介して吸着され、永久磁石３２，接触子２，左側の励磁コイル部３０の鉄心３１，継鉄２９，永久磁石３２で閉磁路が構成されることになって、図７の状態に復帰保持される。
【００８７】
【発明の効果】
請求項１の発明では、３つの同軸の固定接点を備えるとともに中央の固定接点と一端の固定接点との間及び中央の固定接点と他端の固定接点との間に対して夫々近接・離反自在に配置されるコンタクトを持つ第１、第２のコンタクトブロックを備えた金属製の高周波ブロックと、非磁性材からなるフレーム内に固定配置され、フレームを高周波ブロック上に固定することで高周波ブロック上に配置される電磁ブロックと、フレームの両側片の中央部の下部に回動自在に支持され、電磁ブロックの磁気作用により中央部を回動中心として回動して、この回動により高周波ブロック側に近接する側の端部に対向する一方のコンタクトブロックを押動し、離反する端部に対向する他方のコンタクトブロックの押動を解除する接極子とを備えたので、フレームの１部品で、電磁ブロックと、接極子との位置精度を安定させることができ、その結果安定した接極子のストロークが得られ、また生産性が向上するという効果があり、しかも、フレーム上方に配置され電磁ブロックの励磁用の回路を少なくとも設けたプリント基板とを備え、電磁ブロック、接極子を含むフレーム及びプリント基板を収納するように高周波ブロックにカバーを被着したので、各構成部材を順次組み込んでカバーを被着することで組み立てが行えるため、組み立て工程が単純化されて組み立て性が向上するという効果があり、更に高周波特性を高周波ブロックで、接極子のストロークの調整をフレーム側のブロックで調整できるから調整が容易となり、又位置精度の向上により無調整化も可能となる効果がある。
【００８８】
請求項２の発明では、請求項１の発明において、フレームは、非磁性金属板の打ち抜き・曲げ加工により天井片と、該天井片の両側より下方に垂下した側片とを有し、側片の下部を高周波ブロックに溶接固定したので、フレームの寸法、曲げ形状が金型精度により安定し、その結果フレーム内に固定配置される電磁ブロックの高周波ブロックに対する高さ位置がフレームにより決定されて安定し、そのため高さ調整が不要となり、また高周波ブロックにフレームを溶接するので、確実にアースがとれ、リレーからの高周波漏れを防止できるという効果がある。
【００８９】
請求項３の発明では、請求項１又は２の発明において、電磁ブロックは、フレームの天井片の内側面にかしめ固定される継鉄と、継鉄の両端部の下面に夫々鉄心の一端をかしめ固定し、該鉄心周囲に励磁コイルを巻装して継鉄の平板部に垂下配設された２組の励磁コイル部を備えたので、フレームに対して電磁ブロックをねじ無しで固定でき、電磁ブロックのフレームに対する位置が確実となり、結果電磁ブロックを固定したフレームを高周波ブロックに固定することにより、高周波ブロックと電磁ブロックの位置精度が一層高くなるという効果があり、ねじ無し固定であるため、ねじの緩みを防ぐための接着も不要となり、作業性を向上させることができる。
【００９０】
請求項４の発明では、請求項３の発明において、継鉄は中央部の両側より側方へ延長された片を下方に略直角に折り曲げて形成せる垂下片部の下端部に永久磁石の上部を挟んで固定してあるので、従来に比べて永久磁石の体積を小さくすることができ、そのため永久磁石のコストが安価となり、また継鉄の垂下片部の傾きは金型精度で決まるため、寸法精度が安定し、結果従来のような永久磁石を接着・接合して垂下させる場合に比べて永久磁石の下端の磁極部位での変位が小さく、接極子のストロークの安定が図れ、消費電力の低減が可能となるという効果がある。
【００９１】
請求項５の発明では、請求項４の発明において、継鉄の垂直片部の下端部の内側面には上向き面を持つ段部を形成し、この段部に垂直片部の板面に並行する永久磁石の上端縁の角部を当接したので、永久磁石の取り付け位置の位置決めが確実になる。
【００９２】
請求項６の発明では、請求項５の発明において、接極子の短手方向の幅よりも長く、その中央部を接極子の中央部下面に固着して両端を接極子の両側に突出させた中央片と、該中央片の中央部の接極子の長手方向側の両端より接極子との間で間隙をあけながら接極子に沿って一体延長したばね片とからなる接触子ばねを備え、フレームの両側の側片の中央部に設けられた下向きリブを接極子の両側より突出した接触子ばねの中央片の部位に設けた孔に夫々挿入するとともに該孔近傍の接触子ばねの中央片の部位の上面にフレームの両側の側片の中央部に設けた下向きだぼを当接して接極子を永久磁石の磁力と共にフレームに支持したので、溶接やかしめ治具などを用いることなく接極子の手組みが可能となり、生産性が向上するという効果があり、しかも接極子が永久磁石の磁力で吸引保持されるため、接極子が外れることがなく、品質が安定し、またリブが接極子の中央部に対応して設けられるため、接極子の回動による摺動が殆ど生じず、またリブを孔に入れる構成であるため余分なばね力が溶接などの固定に比べて生じず、更にだぼを接触子ばねの中央片の両端部上面に当接してあるので、接極子の回動時の孔近傍での摩擦が殆どなく、極めて動作が安定するという効果があり、更にコンタクトブロックに対する押し込み量を接触子ばねの曲げで調整することもできるという効果がある。
【００９３】
請求項７の発明では、請求項１乃至６の何れかの発明において、電磁ブロックの長手方向の両端下部の両側より夫々側方に動作状態を示す信号を取り出すインディケート端子の固定接触片を夫々突出させるとともに、接極子の長手方向の両端部に、電磁ブロックの両端の両側より突出した対の上記固定接触片に、接極子の回動により接触・開離して対の固定接触片間をオンオフするインディケートばねの対の可動接触片を夫々突出させてあるので、従来のようなインディケート部位の部材の動作時に摩擦が生じず、インディケート部位の動作が安定するという効果があり、しかも電磁ブロックの両端部の空きスペースを利用するため、リレー高さを低くすることができ、また上述のように構成しているので、インディケート部位を少ない部品で構成でき、しかも最終的な動作特性をインディケート端子の固定接触片の曲げで調整することもできるという効果がある。
【００９４】
請求項８の発明では、請求項７の発明において、インディケートばねを非磁性体金属材で形成し、電磁ブロックの各励磁コイル部の鉄心の磁極面に吸着される接極子の上面に磁極面と接極子の間に介在するレシジュアルプレートとして配設されるので、レシジュアルプレートとインディケートばねとを１つの部品で構成でき、部品点数の削減が図れ、コストも安価となるという効果がある。
【００９５】
請求項９の発明では、請求項６乃至８の何れかの発明において、インディケートばねと接触子ばねとを同一厚みで同一金属材により形成したので、接触子ばねと接触子ばねとを一度に打ち抜いて製作することができ、そのため材料の共通化や金型の共通化ができ、生産性の向上が図れるという効果がある。
【００９６】
請求項１０の発明では、請求項１乃至９の何れかの発明において、カバーを樹脂成型品で構成したので、部品加工が容易で生産性が向上でき、しかもプリント基板に実装されるコネクタの端子を外部に導出する端子導出孔を設けたのでプリント基板側のコネクタの端子を特に絶縁を施すことなく直接外部へ導出することができ、そのため組み立てが容易となり、しかも端子導出孔の孔ピッチを金型精度により決めることができるため端子のピッチの狭い市販のコネクタの使用が可能となるという効果がある。
【００９７】
請求項１１の発明では、請求項１０の発明において、カバーの長手方向の両端壁の下部に係止孔を設けるとともに、電磁ブロックの各励磁コイル部のコイルボビンにカバーの被着時に係止孔に係止される係止突起を設けたので、カバーを被せるだけでカバーの固定ができ、接着などの作業が要らないためカバーの組み込みが容易となるという効果がある。
【図面の簡単な説明】
【図１】本発明のラッチングリレーを構成する実施形態の縮小分解斜視図である。
【図２】（ａ）は同上の一部破断せる正面図である。
（ｂ）は同上の一部破断せる側面図である。
【図３】同上の高周波ブロックの拡大断面図である。
【図４】同上のベースの一部破断省略した拡大上面図である。
【図５】同上に用いる継鉄の正面図である。
【図６】本発明の単安定型リレーを構成する実施形態に用いる継鉄の正面図である。
【図７】同上の単安定型リレーの一部破断せる正面図である。
【図８】一従来例の一部破断せる正面図である。
【符号の説明】
１ 駆動機構ブロック
６ａ〜６ｃ 同軸コネクタ
３ａ，３ｂ コンタクトブロック
２ 接極子
４ サブベース
８ ベース
９ カバー
２２ 電磁ブロック
２４ プリント基板
２６ 基板ブロック
２７ フレーム
２９ 継鉄
３２ 永久磁石[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coaxial relay used in a wireless communication device or the like.
[0002]
[Prior art]
As a coaxial relay used for switching between a microwave and a line, there is one disclosed in JP-A-58-202601.
[0003]
FIG. 8 shows a conventional example of a coaxial relay of the latching relay type. This conventional example is formed by die-casting or cutting as shown in the drawing, and has three mounting holes 103... Three SMA type coaxial connectors 101a to 101c are screwed into a female thread portion formed in the lower part, and the tips of the central conductors 102 of the coaxial connectors 101a to 101b are exposed on the upper surface as coaxial fixed contacts. A base 100, a metal sub-base 107 formed on the base 100 by die-casting or cutting, and a concave surface 108 on the upper surface of the base 100, and a central conductor 102 of a central coaxial connector 101b. A contact that contacts and separates both ends of the upper end surface and the upper end surface of the central conductor 102 of the coaxial connector 101a on one end (left end) side. A drive body 105 made of Teflon resin having a lower end heat-fitted at the center of 04 is inserted into the sub base 107 so as to be movable up and down, and a coil is formed between the upper end head of the drive body 105 and the upper surface of the sub base 107. A first contact block 109a that pushes up the driving body 105 with a spring 106 interposed therebetween, and an upper end surface of the central conductor 102 of the central coaxial connector 101b disposed in the concave plane 108 on the upper surface of the base 100 The Teflon resin driving body 105 whose lower end is heat-contacted to the contact 104 that contacts and separates the both ends of the center conductor 102 of the coaxial connector 101c on the other end (right end) side is movable up and down to the sub-base 107. And a coil spring 106 is interposed between the upper end head of the driving body 105 and the upper surface of the sub-base 107 to drive the driving body 10 upward. Constitute a high-frequency block in the second contact block 109b which is adapted to push up the.
[0004]
In addition, the upper ends of the iron cores 112 of the exciting coil portions 111 are inserted and fixed on both side portions of the flat yoke 110, and one magnetic pole surface is joined to the lower surface of the central portion of the yoke 110 between the exciting coil portions 111. The electromagnetic block 114 is composed of a rectangular parallelepiped permanent magnet 113 or the like that hangs down parallel to the exciting coil unit 111.
[0005]
This electromagnetic block 114 has spacers 115 interposed between both ends of the yoke 110 and both ends of the sub-base 107, respectively, and through holes 116 at both ends of the yoke 110, through holes of the spacer 115, The fixing screws 118 and 119 inserted through the insertion holes 117 at both ends of the sub-base 107 are screwed into the screw holes 120 opened at the upper surfaces of both ends of the base 100 and fixed and held.
[0006]
The armature 121 made of a magnetic body rotated by the magnetic action of the electromagnetic block 114 is pivotally supported by a projecting portion 122 projecting from the center of the sub-base 107 by a rotating shaft 121a. The upper surface of the part is opposed to the magnetic pole surface at the other end of the permanent magnet 113, and the upper surface of both ends is opposed to the magnetic pole surface at the lower end of the iron core 112 of the exciting coil unit 111.
[0007]
One fixing screw 118 is inserted into one end of the printed circuit board 123 disposed above the yoke 110 so as to hold the upper and lower surfaces of the printed circuit board 123 with nuts 125, 125, and further above the printed circuit board 123. The printed circuit board 124 is further inserted into one end of the printed circuit board 124 so that the upper and lower surfaces of the printed circuit board 124 are held between the nuts 126 and 126.
[0008]
On the upper surface of the printed circuit board 123, an indicator spring 127 whose center is fixed to the printed circuit board 123 and whose both ends are free ends and a fixed contact 131 facing the free end of the indicator spring 127 are disposed. The excitation circuit of the electromagnetic block 114 is wired and connected to a terminal 129 provided on the ceiling surface of the metal cover 128 attached on the base 100 by a lead wire 130 and connected to an external circuit. Yes.
[0009]
A pin 132 made of a non-magnetic and insulating material is inserted through the center of the iron core 112 of each exciting coil unit 111 so as to be movable up and down. The lower surface of the armature 121 is opposed to the lower surface on the free end side from the fixed point at the center of 127, and the lower end is opposed to the upper surface of the end of the armature 121.
[0010]
Thus, in the state shown in FIG. 8, the magnetic flux of the permanent magnet 1113 flows in the closed magnetic path of the permanent magnet 113, the yoke 110, the iron core 112, the armature 121, and the permanent magnet 113 in the left excitation coil section 111, and the armature 121 The left end is attracted and held on the magnetic pole surface of the iron core 112, and the pin 132 is pushed up at the left end of the armature 121, and the corresponding free end of the indicator spring 127 is separated from the fixed contact 131. In the contact block 109a, the drive body 105 is pushed upward by the coil spring 106, the corresponding contact 104 is separated from the upper end surface of the central conductor 102 of the coaxial connectors 101a and 101b, and the coaxial connectors 101a and 101b are turned off. Yes.
[0011]
On the other hand, in the figure, on the right side of the armature 121, the driving body 105 of the contact block 109b is pushed down on the lower surface of the right end portion of the armature 121 against the spring bias of the coil spring 106, and the center of the coaxial connectors 101b and 101c. A contact 104 corresponding to the upper end surface of the conductor 102 is in contact, and the coaxial connectors 101a and 101b are turned on. The pin 132 corresponding to the right end portion of the armature 121 moves downward, and the free end of the indicator spring 127 corresponding to the pin 132 is in contact with the fixed contact 131 by a spring force.
[0012]
In such a state, when an exciting current is passed through the right exciting coil portion 111 in the direction in which the right end portion of the armature 121 is attracted to the iron core 112 of the right exciting coil portion 111, the armature 121 is counterclockwise in the figure. By rotating in the direction, the state of the contact blocks 109a and 109b is reversed and the state of the indicator spring 127 is reversed. After the right end portion of the armature 121 is attracted to the magnetic pole surface of the iron core 112 of the right exciting coil portion 111, even if the exciting current is cut off, the permanent magnet 113, the yoke 110, the iron core 112, the armature 121, the permanent magnet The attracting state of the armature 121 is maintained by the closed magnetic path of the magnet 113.
[0013]
In this way, by reversing the armature 121 according to the direction of the exciting current flowing through the exciting coils of the exciting coil portions 111 and 111, the contact blocks 109a and 101b are connected between the coaxial connectors 101a and 101b. It can be turned on / off by the contacts 104, 104 of 109b.
[Problems to be solved by the invention]
By the way, the conventional coaxial relay has a structure in which the armature 121 for driving the driving body 105 of the contact blocks 109a and 109b is arranged on the high frequency block side separated from the electromagnetic block 114 side. As a result, the armature stroke is not stable.
[0014]
In particular, since the electromagnetic block 112 is fixed to the base 101 using screws and the height position is determined, there are variations due to assembly, and there is a problem that the stroke of the armature stroke is not stable. Therefore, reassembly of the assembly using screws is repeated. Therefore, there was a problem that productivity was bad.
[0015]
Further, since the permanent magnet 113 is bonded and joined to the plate-shaped yoke 110, the length to the magnetic pole opposed to the central portion of the armature 121 is increased, resulting in an increase in the volume of the permanent magnet 113 and the permanent magnet 113. There was a problem that the cost of the magnet 113 increased. In addition, it is difficult to position the center of the permanent magnet 113 and the center of the yoke 110 together, and when the permanent magnet 113 is tilted, the displacement of the magnetic pole position at the lower end increases, which affects the operating characteristics. Further, the mechanism of the indicator part for confirming the operation state is complicated and has a large number of parts, and the height of the relay is increased because it is necessary to provide a space for storing the printed circuit board 123 on which the indicator spring 127 is disposed. There was a problem.
[0016]
Further, when adjusting the stroke of the armature 121, the pushing amount of the contact blocks 109a and 109b, and adjusting the operating characteristics, it is necessary to remove and adjust the electromagnetic block 114. Further, the armature is fixed by fixing the screws of the electromagnetic block 114. In order to remove the sub-base 107 from the base 100, it is necessary to adjust all of them at once, including a stroke of 121, contact block 109a, 109b push-in amount, operating characteristics, and high-frequency characteristics. The screw had to be adjusted and the workability was very poor.
[0017]
Further, the pin 132 for moving the indicator spring 127 rubs against the inner surface of the central through hole of the iron core 112, and the operation becomes unstable due to friction with the indicator spring 127, friction with the armature 121, and the like. was there.
[0018]
Moreover, since the cover 128 is made of metal and is manufactured by drawing, there is a problem that it is difficult to manufacture a deep cover and the cost is high. In addition, it is necessary to insulate between the terminal 128 and the cover 128. Since the upper cover 128 is bonded and joined to the sub-base 107, there is a problem that workability is poor, and there is a problem that the cover 128 cannot be securely grounded.
[0019]
The present invention has been made in view of the above-described problems, and an object thereof is to provide a coaxial relay that is easy to assemble and that can obtain stable operation.
[0020]
[Means for Solving the Problems]
According to the first aspect of the present invention, three coaxial fixed contacts are provided, and the proximity and separation between the central fixed contact and one fixed contact and between the central fixed contact and the other fixed contact are respectively possible. The metal high-frequency block having the first and second contact blocks having contacts disposed on the high-frequency block is fixedly disposed in a frame made of a non-magnetic material, and the frame is fixed on the high-frequency block. The electromagnetic block placed on the lower side of the central part of both side pieces of the frame is rotatably supported, and the central part is rotated by the magnetic action of the electromagnetic block. An armature that pushes one of the contact blocks facing the end on the side close to the arm and releases the push of the other contact block facing the far end, and above the frame And a printed circuit board provided with at least a circuit for exciting the electromagnetic block, and a cover is attached to the high frequency block so as to accommodate the electromagnetic block, the frame including the armature, and the printed circuit board. .
[0021]
In the invention of claim 2, in the invention of claim 1, the frame has a ceiling piece by punching and bending of a nonmagnetic metal plate, and a side piece that hangs downward from both sides of the ceiling piece. It is characterized in that the lower part of the metal plate is welded and fixed to a high frequency block.
[0022]
According to a third aspect of the invention, in the first or second aspect of the invention, the electromagnetic block includes a yoke that is caulked and fixed to the inner side surface of the ceiling piece of the frame, and one end of the iron core is caulked to the lower surface of both ends of the yoke. It is characterized by comprising two sets of exciting coil portions fixed and wound around the iron core and suspended from the flat plate portion of the yoke.
[0023]
According to a fourth aspect of the present invention, in the third aspect of the invention, the yoke is formed by bending a piece extending laterally from both sides of the central portion downwardly at a substantially right angle to the lower end portion of the hanging piece portion. It is characterized in that it is fixed by sandwiching it.
[0024]
In the invention of claim 5, in the invention of claim 4, a step portion having an upward surface is formed on the inner surface of the lower end portion of the vertical piece of the yoke, and this step portion is parallel to the plate surface of the vertical piece portion. The corner portion of the upper edge of the permanent magnet is in contact with the permanent magnet.
[0025]
In the invention of claim 6, in the invention of claim 5, the width of the armature is longer than the width of the armature, and the center portion is fixed to the lower surface of the center portion of the armature, and both ends are protruded to both sides of the armature. A central piece and a spring piece integrally extended along the armature with a gap between the armature from both longitudinal ends of the central armature of the central piece Contact spring The downward ribs provided at the center portions of the side pieces on both sides of the frame are respectively inserted into the holes provided in the central piece portions of the contact springs protruding from both sides of the armature, and in the vicinity of the holes. Contact spring A downward dowel provided at the center of the side pieces on both sides of the frame is brought into contact with the upper surface of the central piece portion, and the armature is supported on the frame together with the magnetic force of the permanent magnet.
[0026]
According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, the fixed contact pieces of the indicator terminals for taking out the signals indicating the operation state from the both sides of the lower part of both ends in the longitudinal direction of the electromagnetic block are respectively provided. At the same time, the pair of fixed contact pieces protruding from both sides of both ends of the electromagnetic block are contacted and separated by turning the armature at both ends of the armature in the longitudinal direction. The movable contact pieces of the pair of indicator springs are protruded from each other.
[0027]
The invention according to claim 8 is the invention according to claim 7, wherein the indicator spring is formed of a non-magnetic metal material, and the magnetic pole surface is formed on the upper surface of the armature that is attracted to the magnetic pole surface of the iron core of each exciting coil portion of the electromagnetic block. Between the armature and the armature Residual plate It is arranged as follows.
[0028]
The invention of claim 9 is characterized in that, in the invention of any one of claims 6 to 8, the indicator spring and the contact spring are formed of the same metal material with the same thickness.
[0029]
According to a tenth aspect of the present invention, in any one of the first to ninth aspects, the cover is made of a resin molded product, and a terminal lead-out hole for leading the connector terminal mounted on the printed circuit board to the outside is provided. Features.
[0030]
According to an eleventh aspect of the present invention, in the tenth aspect of the present invention, a locking hole is provided in the lower part of both end walls in the longitudinal direction of the cover, and each of the electromagnetic blocks Excitation coil section The coil bobbin is provided with a locking projection that is locked to the locking hole when the cover is attached.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to an embodiment.
[0032]
This embodiment constitutes a latching relay. As shown in FIGS. 1 and 2, the drive mechanism block 1 in which the electromagnetic block 22 and the armature block 23 are incorporated in the frame 27 and the armature 2 of the armature block 23 are shown. SMA type coaxial connector 6a in which the metallic sub-base 4 provided with the contact blocks 3a and 3b driven by the contact block 3a and the fixed contacts opened and closed by the respective contacts 5 of the contact blocks 3a and 3b are formed on the upper end surface of the center conductor 7, respectively A high frequency block composed of a metal base 8 screwed with ˜6b, an excitation circuit and an indicator circuit of the drive mechanism block 1, a substrate block 26 disposed above the drive mechanism block 1, and a box having a lower surface opening And a synthetic resin molded product cover 9 such as LCP.
[0033]
The metal base 8 is formed by cutting. As shown in FIGS. 3 and 4, three mounting holes 10 that penetrate from the bottom surface to the upper surface are formed at regular intervals in the longitudinal direction. 10 has a female screw portion 10a formed in the lower portion and an upper end opened to a concave plane 8a formed on the upper surface of the metal base 8. The female screw portion 10a of each mounting hole 10 is formed on the bottom surface side of the metal base 8. SMA type coaxial connectors 6a to 6c are respectively screwed, and the respective central conductors 7 of the coaxial connectors 6a to 6c are projected from the upper end opening of the hole 10 into the concave plane 8a. The upper end surfaces of these central conductors 7 are at the same height and constitute a fixed contact.
[0034]
The coaxial connectors 6a to 6c are made of a metal cylindrical outer shell conductor 11 having a male screw portion formed on the outer periphery, a fluororesin insulator 12 inserted into the outer shell conductor 11, and the center of the insulator 12. A center conductor 7 inserted into the through hole and having a tip projecting outward, and a constricted portion 7a formed near the base of the projecting portion of the center conductor 7 are press-fitted into the center hole, and an upper end opening of the outer shell conductor 11 is inserted. And a sub-bushing 13 made of cyclic PCTFE (ethylene trifluoride) that is press-fitted into the portion, and this sub-bushing 13 secures a holding force that restricts the removal and rotation of the center conductor 7 with the hardness of the material. . The outer conductor 11 is formed with cut surfaces 11a for securing an adhesive accommodating space opened at the upper end side of the outer conductor 11 at two positions on both sides of the male screw portion. The adhesive is used to secure the screwing strength with the female screw portion 10a when the male screw portion of the outer conductor 11 is screwed into the female screw portion 10a of the mounting hole 10, and the adhesive protrudes from the cut surface 11a. Ensure storage space is avoided.
[0035]
As shown in FIG. 3, the mounting hole 10 has a depth of the female screw portion 10a that is approximately ½ (half) of the height of the base 8, and the above-mentioned cut surface can be obtained by increasing the screwing allowance. The strength in the direction of the arrow Y can be maintained while securing a storage space for the adhesive by 11a.
[0036]
Further, by setting the inner diameter of the hole 10b above the female screw portion 10a to be slightly smaller than the inner diameter of the female screw portion 10a, a boundary portion between the upper end portion of the female screw portion 10a and the hole portion 10b is used as a step portion. The upper surface near the boundary portion between the outer shell conductor 11 and the sub bushing 13 of the coaxial connectors 6a to 6c is brought into contact with the downward surface, the diameter dimension of the sub bushing 13 at the contact portion, and the constricted portion of the central conductor 7 Balance of holding force while ensuring high frequency characteristics by making the dimensions in the diameter direction of the upper and lower surfaces of the sub bushing 13 abutting the upper and lower surfaces in the constricted portion 7a around the hole for fitting the 7a. Therefore, the strength in the direction of the arrow X is secured in the portions a and b of the respective portions, and the strength in the direction of the arrow X ′ is secured in the portion c, and at the same time, the center conductor 7 is prevented from rotating. Yes.
[0037]
By securing the strength in the X, X ′, and Y directions as described above, the holding force of the coaxial connectors 6a to 6c is ensured, and the components are displaced due to external force when the coaxial cable is connected and the high frequency characteristics are changed.・ It can prevent deterioration.
[0038]
The sub-base 4 is formed by punching a metal plate, and the lengths in the longitudinal direction and the short-side direction are slightly smaller than the dimensions in the corresponding direction of the base 8. When attached to a fixed position on the upper surface, the upper surface of the base 8 on which the lower end surface of the cover 9 is placed can be secured around it. Further, the lower surface of the sub-base 4 needs to ensure its flatness in order to contact the upper surface of the base 8, but since it is plate-shaped, lapping can be used for polishing.
[0039]
When the sub-base 4 is mounted at a fixed position on the base 8, it is intermediate between the central conductor 7 of the coaxial connector 6a and the central conductor 7 of the coaxial connector 6b and the central conductor 7 of the coaxial connector 6a and the coaxial connector 6b. Through holes 14 and 14 penetrating vertically are drilled at positions corresponding to the middle of the center conductor 7. These through-holes 14 and 14 are made of LPC (fully aromatic liquid crystal polymer) resin that is heat-bonded to contact springs 15 and 15 disposed on the upper surface side of the sub-base 4 and is always biased upward. The drive bodies 16, 16 are inserted freely when moving in the vertical direction.
[0040]
These drive bodies 16, 16 are joined and fixed at the lower ends of the sub-base 4 projecting to the lower surface side by means of insert (simultaneous) molding, and the center portions of the contacts 5, 5 made of flat plate-like conductors. In addition, contact blocks 3a and 3b are respectively configured. Each contact 5 of these contact blocks 3a and 3b is moved up and down in the concave plane 8a of the base 8 by moving the driving body 16 up and down, and the lower surface of both ends of the contact 5 of the contact block 3a is a concave plane. Opposite end faces of the central conductors 7 and 7 of the coaxial connectors 6a and 6b projecting into the 8a, and lower surfaces of both ends of the contact 5 of the contact block 3b are opposed to upper end faces of the coaxial connectors 6b and 6c projecting into the concave plane 8a. Then, the contact 5 of the contact block 3a contacts the upper end surfaces of the center conductors 7 and 7 of the coaxial connectors 6a and 6b when moving downward, and turns on between the coaxial connectors 6a and 6b. The contact 5 of the contact block 3b When moving downward, the upper ends of the central conductors 7 and 7 of the coaxial connectors 6b and 6c come into contact with the coaxial connectors 6b and 6b. In shall, both contact block 3a, the contact by the contact 5 of the 3b are alternately switched by the contacts 2 of the drive mechanism block 1. Accordingly, the central conductor 7 of the coaxial connector 6b serves as a common terminal, and the coaxial connector connected to the common terminal side is alternately switched between 6a and 6b.
[0041]
Here, since the LPC resin having particularly excellent heat resistance is used as the material of the driving body 16 of the contact blocks 3a and 3b, the heat generation of the contact 5 can be endured, and as a result, the power that can be supplied to the contact portion can be increased. . Further, since the contact 5 is coupled and fixed to the driving body 16 by insert molding, the contact of the contact 5 to the driving body 16 is stable, and the contact 5 is positioned by an insert molding die, so that the contact 5 is inclined. In addition, the dimensions (volume), position, and shape of the fixed part are stabilized by the mold accuracy, and the high-frequency characteristics including mechanical opening and closing are stabilized. Further, the driving body 16 can be manufactured at a low cost because of the molding process. Here, the cross-sectional shape of the hole of the contact 5 fixedly coupled to the drive body 16 is square as shown in FIG. 4 to prevent rotation. If the high-frequency matching is adjusted and changed by deforming the through hole 14, the high-frequency matching can be easily changed.
[0042]
The contact spring 15 that urges the drive body 16 of the contact blocks 3a and 3b is formed into a Japanese character shape by punching and bending with a mold, and the central portion of the central piece 15a is positioned higher than both ends thereof. The center piece 15a is bent so as to be positioned, and both end pieces 15b and 15b parallel to the center piece 15a are bent so that the center part is lower than both ends. The upper end portion 16a of the driving body 16 is inserted into the provided insertion hole 18 from below and fixed by heat-fitting, and the fixing screw 17 is inserted from above into an insertion hole (not shown) provided in the center of both end pieces 15b. It has become.
[0043]
Here, the diameter of the driving body 16 below the upper end portion 16a that serves as a presser for the contact spring 15 only needs to be larger than the inner diameter of the insertion hole 18 of the contact spring 15, so that a heat-sealed shape with a small diameter is possible. The tip of the upper end 16a is Contact spring It is possible to reduce the friction at the portion in contact with 19, reduce the contact area as shown, or form the R surface. Further, the volume of the heat-attached portion can be adjusted by the height of the upper end portion 16a of the driving body 16, and since the precision of the molding die of the driving body 16 is good, rattling can be eliminated.
[0044]
On the other hand, the contact spring 15 is screwed and fastened to the screw hole 21 on the base 8 side through an insertion hole for forming the fixing screw 17 penetrating the center portion of the both end pieces 15b in the sub base 4 together with the sub base 4. The fixing screw 17 is also used as a fixing screw for the sub base 4 to improve workability.
[0045]
Now, since the contact spring 15 has a bilaterally symmetrical shape formed in a Japanese shape and is configured to fix the central part of both end pieces 15b, 15b, the upper displacement of the central piece 15a is possible, but to both sides There is almost no blurring, and the pushing force is determined by the die size of the punching / bending process, so that the pushing force is stable. As a result, the pushing direction is stabilized and stable operation can be realized. In addition, since one part has a simple shape, the part productivity is good.
[0046]
As described above, since the contact spring 15 can be stably pushed upward, it is not necessary to restrict the direction of the driving bodies 16 and 16 of the contact blocks 3a and 3b by the through holes 14 of the sub-base 4. By increasing the gap between the hole 14 and the inner surface, it is possible to eliminate friction at this portion, resulting in a more stable operation. Further, by adopting a method in which the contact spring 15 is fixed to the sub-base 4 by screws, replacement for adjusting characteristics is facilitated.
[0047]
Here, as shown in FIG. 3, the dimension α of the lower end of the driving body 16 projecting downward from the lower surface of the contact 5 of the contact blocks 3a, 3b is fixed depending on the precision of the molding die. On the other hand, the deviation in impedance at the center of the contact blocks 3a and 3b is optimally determined by the depth dimension β of the circular recess 28 provided in the concave plane 8a of the base 4 provided as a relief when the driving body 16 moves downward. Can be realized. Also, as shown in FIG. 4, the impedance matching is most easily achieved by making the central portions of the contact blocks 3a and 3b and the cross-sectional shape of the recess 28 concentric. In FIG. 4, γ represents the diameter of the recess 28, and γ ′ represents the diameter of the central portion of the contact blocks 3a and 3b.
[0048]
The drive mechanism block 1 includes an electromagnetic block 22, an armature 2 and Contact spring The armature block 23 is composed of a frame 27 that holds the electromagnetic block 22 and the armature block 23.
[0049]
The electromagnetic block 22, which is a main component of the drive mechanism block 1, is composed of a yoke 29, two sets of exciting coil sections 30, a permanent magnet 32, and the like. The yoke 29 is formed by punching and bending a magnetic material such as magnetic soft iron, a flat plate portion 29a, and a hanging piece portion 29b bent downward from the central portion in the longitudinal direction of the flat plate portion 29a. The upper end of the iron core 31 of the exciting coil portion 30 is inserted into holes provided at both end positions symmetrical from the longitudinal center of the flat plate portion 29a, and fixed by caulking, and the exciting coil portion 30 is suspended. A permanent magnet 32 is bridged between the lower ends of the hanging pieces 29b and 29b.
[0050]
This arrangement is achieved by positioning the permanent magnet 32 together with the plate width of the hanging piece portion 29b and by engaging the upper end edges of the plate-like permanent magnet 32 with the stepped portion 34 at the lower end of the hanging piece portion 29b. It is done by doing.
[0051]
Here, the center of the drooping piece 29b coincides with the center of the flat plate portion 29a, and the distance from the center to the both side edges is equal to each other. In this embodiment constituting the latching relay, the permanent magnet 32 is shown in FIG. As shown in FIG. 3, the hanging piece 29b has a width extending over both side edges and has magnetic poles on the upper and lower surfaces.
[0052]
By adopting the above-described structure for attaching the permanent magnet 32, the volume of the permanent magnet 32 becomes smaller and the cost is lower than the case where the upper end of the permanent magnet is bonded and fixed to the plate-shaped yoke and the permanent magnet is suspended. It will be cheap. Further, when the permanent magnet is directly bonded to the central portion of the yoke, it is difficult to position the center, and when the permanent magnet is tilted, the displacement at the magnetic pole at the tip of the permanent magnet is large, which affects the operating characteristics. As described above, when the permanent magnet 32 is attached between the hanging pieces 29 b and 29 b of the yoke 29, the inclination of the permanent magnet 32 is determined by the processing accuracy of the yoke 29. That is, since the inclination of the yoke 29 is determined by a die for punching and bending, the inclination is small and the dimensional accuracy is stable, so that the stroke of the armature 2 described later is stabilized, and power consumption can be reduced. In addition, since the magnetic circuit is configured with the yoke 2 having a small magnetic resistance as the center, a magnetic circuit capable of securing an equal or higher magnetic force even when the permanent magnet 32 having a large magnetic resistance is small can be configured.
[0053]
The exciting coil unit 30 is configured by winding an exciting coil 35 around a coil bobbin 33 having an iron core 31 inserted therein. Coil terminals 36 and 36 are projected. The coil terminals 36, 36 extend upward from the protruding base end and protrude upward from the flat plate portion 29 a of the yoke 29. A fixing base 33c for fixing the lower portion of the pair of indicator terminals 37, 37 is provided at the outer end of the lower flange 33b, and the indicator terminals 37, 37 are supported. These indicator terminals 37, 37 are extended in parallel using the empty space of the electromagnetic block 22, and the upper part is between the protruding portions of the coil terminals 36, 36 of the upper flange 36a. The upper end protrudes upward from the flat plate portion 39a of the yoke 39 in a retained form. The pair of indicator terminals 37, 37 are bent and protruded at both lower ends to form fixed contact pieces 38, 38. The pair of indicator terminals 37, 37 are indicators attached to the upper surfaces of both ends of the pair of fixed contact pieces 38, 38 and the contact 2, respectively. When the movable contact pieces 40, 40 on both sides of the Kate spring 39 are contact-separated by the rotation of the armature 2, the coaxial connector 6a by the contact 5 of the corresponding contact block 3a or 3b is turned on and off. A signal indicating the on / off state between 6b or 6c and 6b can be taken out.
[0054]
Therefore, in the structure of this embodiment, the indicator contact is arranged above the electromagnetic block as in the prior art, and a pin that moves up and down by the rotation of the armature is placed in the central through hole of the iron core of the exciting coil. Unlike the structure that opens and closes the indicator contact at the upper end, there is no need to increase the relay height, and there is no need for a printed circuit board or pin for mounting the indicator part, and between the pin and the center through hole of the core. This eliminates friction that occurs, and stabilizes operation.
[0055]
Here, the indicator terminal 37 and the indicator spring 39 are simultaneously removed from the same material (non-magnetic conductive material) with the same thickness by punching, thereby improving the productivity as well as making the mold common. I am trying.
[0056]
Each indicator spring 39 is fixed by welding the plate surface to the upper surface of the end portion of the armature 2 that is attracted and opposed to the magnetic pole surface at the lower end of the iron core 31 of the exciting coil portion 30; Residual plate Doubles as The movable contact piece 40 is gold-plated or inlaid in a tape shape.
[0057]
The contact block 23 is fixed to the armature 2 made of a magnetic material and welded joints on both upper surfaces of the armature 2. Residual plate Consists of dual-purpose indicator springs 39, 39 and a contact spring 19 attached to the lower surface, Contact spring 19 is a central piece 19b formed in a direction orthogonal to the longitudinal direction of the armature 2, and a pair of spring pieces 19a integrally formed so as to be parallel to the longitudinal direction of the armature 2 from both sides of the center of the central piece 19b. The spring piece 19a is formed of a spring adjusting protrusion 41 integrally projecting from both sides of the end of the spring piece 19a. The central piece 19b is formed in a substantially U-shaped cross section so as to protrude upward, and the armature 2 A dowel (not shown) protruding from the lower surface of the armature 2 is inserted into a hole (not shown) formed in the center from above and caulked to fix the armature 2 to the center of the lower surface, and both ends thereof are connected. Projecting to both sides of the pole 2. In this state, a gap is formed between the spring pieces 19a on both sides of the central piece 19b and the lower surface of the armature 2 so that the spring pieces 19a can bend. The spring can be adjusted by protruding in the direction. Square holes 42 into which ribs 43 protruded from a frame 27 described later are loosely fitted are provided at both ends of the central piece 19b protruding from both sides of the armature 2.
[0058]
The frame 27 is formed by punching and bending a non-magnetic metal plate, and includes a ceiling piece 27a and side pieces 27b formed by bending downward from both lateral ends of the ceiling piece 27a. 27b, and the electromagnetic block 22 configured as described above is accommodated in the space between the ceiling piece 27a and the side pieces 27b and 27b, and the armature configured as described above is further provided below the electromagnetic block 22. Block 23 is arranged.
[0059]
The electromagnetic block 22 is attached to the frame 27 by inserting the dowels 44 pressed from the lower surface into the four corners of the upper surface of the yoke 39 and projecting upward into the insertion holes 45 formed corresponding to the ceiling piece 27a side from below. Then, the upper surface of the yoke 39 is brought into contact with the lower surface of the ceiling piece 27a, and the dowel 44 protruding from the insertion hole 45 in this state is caulked and fixed. At this time, the coil terminal 36 and the indicator terminal 37 protruding upward from both ends of the electromagnetic block 22 protrude above the ceiling piece 27a from the notches 46 formed at both ends of the ceiling piece 27a. Moreover, the upper end part of the iron core 31 of each exciting coil part 30 will be fitted in the escape hole 47 provided so as to oppose the ceiling piece 27a.
[0060]
Bending pieces 48 and 48 are formed by bending inwardly at the central lower ends of both side pieces 27b and 27b located slightly below the lower surface of the permanent magnet 32 of the electromagnetic block 22, and an armature is provided between the protruding pieces 48 and 48. 2 and the ribs 43 formed by bending downward from the tips of the projecting pieces 48, 48 are projected from above into the square holes 42 at both ends of the center piece 19 b of the contact spring 19 projecting from both sides of the center of the armature 2. By loosely fitting, the upper surface of both ends of the central piece 19b of the contact spring 19 protruding from both sides of the armature 2 is swingably contacted with a dowel 49 protruding from the lower surface of the protruding pieces 48, 48. At this time, since the armature block 23 is pulled upward by the magnetic force of the permanent magnet 32, the arm 43 is held by the frame 27 without dropping the rib 43 from the square hole 42, and the quality is also stabilized.
[0061]
By adopting such a holding structure for the armature block 23, welding and caulking jigs are not required and manual assembly is possible, thereby improving productivity. Further, since the rib 43 is installed on the central side of the armature 2, there is almost no sliding due to the rotation of the armature 2, that is, there is no mistake and the operation is stable. further Contact spring Since the rib 43 is loosely fitted into the 19 square holes 42, Contact spring 19 spring force does not work on that part, Contact spring Since the contact is made with the lower surface of the 19 central piece 19b, there is almost no error between them, and an excessive spring force does not work as compared with welding fixing and the operation is stabilized.
[0062]
The drive mechanism block 1 is completed by incorporating the electromagnetic block 22 and the armature block 27 into the frame 27 as described above.
[0063]
The drive mechanism block 1 is arranged and fixed on the high frequency block as follows. In other words, the stepped portions 53a of the leg pieces 53 integrally projecting downward from the lower portions of both ends 27b of the frame 27 are fitted into the recessed portions 54 formed at the four corners of the sub-base 4, and the downwardly facing surfaces of the stepped portions 53a. Is placed on the upper surface of the sub-base 4 to determine the height, and the lower end side surface 53a of the leg piece 53 is welded and fixed to the side surface of the sub-base 4 in this state.
[0064]
Due to this arrangement and fixing, the upper ends of the drive bodies 16 of the contact blocks 3a and 3b are opposed to each other. Contact spring For example, as shown in the figure, a closed magnetic path is formed by the permanent magnet 32, the yoke 29, and the iron core 31 of the exciting coil section 30, and is attracted to the iron core 31 side. The upper end of the driving body 16 of the contact block 3a facing the spring piece 19a of the contact spring 19 on one end side of the contact 2 is separated from the spring piece 19a, while the other end side of the contact 2 on the side that is not attracted. The upper end of the driving body 16 of the contact block 3b facing the spring piece 19a of the contact spring 19 resists upward biasing of the contact spring 15 and is pushed downward by the armature 2 through the spring piece 19a. It becomes. That is, the contact block 3a is urged upward by the contact spring 15 and the driving body 16 moves upward so that both ends of the contact 5 are separated from the upper end surfaces of the central conductors 7 of the coaxial connectors 6a and 6b. In the other contact block 3b, the driving body 16 moves downward, and both ends of the contact 5 are in contact with the upper end surfaces of the central conductors 7 and 7 of the coaxial connectors 6b and 6c, and between the coaxial connectors 6a and 6b. Is off and the coaxial connectors 6b and 6c are on.
[0065]
Here, since the electromagnetic block 22 and the armature block 23 of this embodiment are all positioned by one part of the frame 27, the dimensional accuracy is stabilized and the productivity is improved.
[0066]
In addition, since the fixing to the frame 27 is all without screws and is performed by caulking or welding, the dimensional accuracy in the height direction is stable, no recombination due to variations in accuracy is required, and no adhesive application to the screw portion is required. Workability is improved.
[0067]
In addition, the frame 27 is stable in size and bending due to the mold accuracy, and the frame 27 is welded to the sub-base 4 of the high-frequency block together with the dimensional stability of the electromagnetic block 22, so that the height dimension is determined by one part of the frame 27. Can do. Further, since the drive mechanism block 1 is stacked on the high frequency block, the assembly process is simplified.
[0068]
Further, coaxial connectors 6a to 6c for opening and closing high frequency are attached, and the high frequency block including the base 8 and the sub base 4 to which the contact blocks 3a and 3b are attached and the drive mechanism block 1 are separated into blocks. Since the structure is incorporated, the high-frequency characteristics can be adjusted only by the high-frequency block, and the operating characteristics on the drive mechanism block 1 side can be adjusted separately from the high-frequency block side, so that the adjustment work is easy and productivity can be improved. Further, since the stroke of the armature 2 is determined by the position of the frame 27 and the iron core 31, it can be adjusted by adjusting the dimensions with a jig for ironing the iron core. Furthermore, the pushing amount of the contact blocks 3a, 3b, that is, the overtravel amount after the contact 5 abuts the upper surface of the central conductor 7 of the coaxial connectors 6a, 6b or 6b, 6c is as follows. Contact spring 19 is adjusted by adjusting the spring adjustment protrusion 41. in this case Contact spring Since the tips of the 19 spring pieces 19a can be brought into contact with the lower surface of the armature 2, the adjustable width is wide.
[0069]
Furthermore, the adjustment of the operating characteristics when a predetermined excitation voltage is applied to the excitation coil section 30 is finally adjusted by bending the fixed contact piece 38 of the indicator terminal 27 that contacts the movable contact piece 40 of the indicator spring 39. . The spring adjusting protrusion 41 and the fixed contact piece 38 are formed so that other parts such as the frame 27 do not get in the way during adjustment.
[0070]
In the case of the present embodiment, basically, since the dimensional accuracy of each component and its positioning is improved, almost no adjustment can be realized.
[0071]
Now, after the drive mechanism block 1 is disposed and fixed on the high frequency block as described above, the substrate block 26 is disposed above the frame 27.
[0072]
In this case, the tip of the coil terminal 36 and the tip of the indicator terminal 37 projecting upward from the ceiling piece 27a of the frame 27 are attached to the mounting holes 50 and 51 provided so as to correspond to the printed board 24 of the board block 26 from below. The printed board 24 is inserted and soldered, and the printed board 24 is disposed and fixed above the ceiling piece 27 a and is electrically connected to a circuit mounted on the printed board 24.
[0073]
The board block 26 includes a printed board 24 and a connector 25 mounted on the center of the printed board 24. The connector 25 is a terminal for inputting a driving signal (including exciting current) of each exciting coil section 30 from an external circuit. And a terminal for outputting an operation state signal from the indicator terminal 37 to the outside. Of course, in the case of TTL driving, a TTL circuit or the like is mounted on the printed circuit board 24. The central opening 52 of the ceiling piece 27 a is an opening for escaping the terminal on the lower surface side of the connector 25.
[0074]
After the arrangement and fixing of the frame 27 is finished, the cover 9 is attached on the base 8 to complete the coaxial relay of this embodiment.
[0075]
When the cover 9 is attached, the terminal of the connector 25 is inserted into the terminal lead-out hole 55 provided on the ceiling surface of the cover 9 from the inside, and the drive mechanism block 1 is housed in the cover 9 while the cover 9 is attached to the base 8. The lower end of the cover 9 is moved in the direction, using the elasticity of the cover material, and the locking projections 56 projecting and locking to the outer surface of the fixed base 33c of the coil bobbin 33 of the exciting coil portions 30 and 30. The locking projection 56 is moved over while being guided by the tapered surface 56a at the upper end, and the locking projection 56 is locked from the inside to the locking holes 57 formed in the lower portions of both side walls of the cover 9 to fix the cover 9 To do. At this time, the lower end portion of the cover 9 comes into contact with the upper surface of the base 8 around the sub-base 4.
[0076]
As described above, according to the present embodiment, the entire assembly process is simplified by arranging the drive mechanism block 1 on the high frequency block, stacking the substrate block 26, and attaching the cover 9 from above. Assembling improves.
[0077]
Next, the operation of the present embodiment assembled as described above will be briefly described.
[0078]
In FIG. 2, the magnetic flux in the direction in which the upper end of the right end portion of the armature 2 is attracted to the exciting coil 35 of the exciting coil portion 30 on the side where the end portion of the armature 2 is away from the opposing magnetic pole surface of the iron core 31. When an excitation current in the direction to be generated is passed, the right end portion of the armature 2 is attracted to the opposing magnetic pole face of the iron core 31, and the contact force in the contact block 3b side pushes up the driving body 16 with a contact force in FIG. The pole 2 rotates counterclockwise.
[0079]
By this rotation, the right end portion of the armature 2 on the contact block 3b side is attracted to the opposing magnetic pole surface of the iron core 31 of the right exciting coil portion 30 via the indicator spring 39, and the iron core 31, the yoke 29, and the permanent A closed magnetic path of the magnet 32, the armature 2, and the iron core 31 is configured, and the right end portion of the contact 2 is attracted to the magnetic pole surface of the iron core 31 of the right excitation coil portion 30. This state is maintained because the magnetic flux of the permanent magnet 32 flows through the closed magnetic circuit even when the excitation current is lost. With the above operation, the contact 5 on the contact block 3b side is separated from the upper end surfaces of the central conductors 7 and 7 of the coaxial connectors 6b and 6c, and the coaxial connectors 6b and 6c are turned off. On the other hand, on the contact block 3a side, the left end of the armature 2 is moved downwardly against the pushing force of the contact spring 15 via the spring piece 19a of the armature spring 19 by the counterclockwise rotation of the armature 2. The contact 5 at the lower end of the driving body 16 contacts the upper end surfaces of the center conductors 7 and 7 of the coaxial connectors 6a and 6b, and turns on between the coaxial connectors 6a and 6b. Further, the movable contact piece 40 of the individual spring 39 on the side of the contact block 3b that has been in contact with the fixed contact piece 38 of the indicator terminal 37 is separated, and the contact that has been separated from the fixed contact piece 38 of the indicator terminal 37 is separated. The movable contact piece 40 of the independent spring 39 on the block 3 a side comes into contact with the fixed contact piece 38, and an operation state signal is output to the outside through the connector 25. The operation state can be monitored by this operation state signal.
[0080]
If an excitation current in the direction of attracting the left end portion of the armature 2 is supplied to the contact block 3a side, that is, the excitation coil 35 of the left excitation coil portion 30 in the figure from this inversion state, the inversion operation is performed in the same manner as described above. It will return to the state of.
[0081]
Although the above-described configuration is a bistable latching relay, a fail-safe monostable relay can be configured simply by changing the width dimension of the permanent magnet 32.
[0082]
In other words, as shown in FIG. 6, the width of the permanent magnet 32 corresponding to the longitudinal direction of the yoke 29 may be made smaller than the width of the hanging piece 29b so as to be close to one side. In this case, the excitation coils 35 of the left and right excitation coil sections 30 are connected in series to constitute one excitation coil.
[0083]
FIG. 7 shows a side cross-sectional view of an embodiment of this monostable relay structure. This monostable relay is driven as follows. In the stable state of FIG. 7, excitation current is applied to the excitation coils 35, 35 of both excitation coil portions 30, 30 so that the right end portion of the armature 2 is attracted to the magnetic pole surface of the iron core 31 of the right excitation coil portion 30. When flowing, the repulsive force generated between the left iron core 31 and the left end portion of the armature 2 causes a downward force on the left end portion of the armature 2 on the contact block 3a side, and the armature 2 on the contact block 3b side. At the right end, an attractive force and a pushing force of the driving body 16 by the contact spring 15 act, and the armature 2 rotates counterclockwise.
[0084]
When the right end portion of the armature 2 comes into contact with the magnetic pole surface of the iron core 31 of the right excitation coil portion 30 via the indicator spring 39, the iron core 31, the yoke 29, the permanent magnet 32, the contact of the right excitation coil portion. A closed magnetic path of the pole 2 and the iron core 31 is configured, and the other end of the armature 2 is in a state of being attracted to the lower end of the iron core 31 of the right exciting coil section 30.
[0085]
In this state, the drive body 16 of the contact block 3a is pushed against the push-up force of the contact spring 15 at the left end of the armature 2 that has moved downward, and the contact 5 is brought into contact with the upper ends of the central conductors 7 and 7 of the coaxial connectors 6a and 6b. Contact is made and the coaxial connectors 6a and 6b are turned on. Also, the drive body 16 of the contact block 3b is pushed up by the spring force of the contact spring 15 by the upward movement of the right end portion of the armature 2, and the contact 5 is separated from the upper end surfaces of the central conductors 7 and 7 of the coaxial connectors 6b and 6c. Then, the coaxial connectors 6b and 6c are turned off. Further, the movable contact piece 40 of the individual spring 39 on the side of the contact block 3b that has been in contact with the fixed contact piece 38 of the indicator terminal 37 is separated, and the contact that has been separated from the fixed contact piece 38 of the indicator terminal 37 is separated. The movable contact piece 40 of the independent spring 39 on the block 3 a side comes into contact with the fixed contact piece 38, and an operation state signal is output to the outside through the connector 25.
[0086]
This operating state is maintained in a state where an exciting current is flowing through the exciting coil 35 of the exciting coil unit 30, but when the exciting current is turned off, the state returns to the state shown in FIG. In other words, since the permanent magnet 32 is biased toward the contact block 3 a, the permanent magnet 32, the armature 2, the iron core 31, the yoke 29, and the permanent magnet 32 of the right excitation coil section 30 are placed on the contact block 3 b side. The combined force of the attracting force due to the magnetic flux of the flowing permanent magnet 32 and the pushing force of the driving body 16 by the contact spring 15 of the contact block 3a is larger than the attracting force with respect to the right end portion of the armature 2, so that the armature 2 is By rotating clockwise, the left end moves upward, and the left end of the armature 2 is attracted to the iron core 31 of the left exciting coil section 30 via the indicator spring 39, and the permanent magnet 32, contact 2 , A closed magnetic circuit is formed by the iron core 31, the yoke 29, and the permanent magnet 32 of the left exciting coil section 30, and the state is returned to and held in the state of FIG.
[0087]
【The invention's effect】
According to the first aspect of the present invention, three coaxial fixed contacts are provided, and the proximity and separation between the central fixed contact and one fixed contact and between the central fixed contact and the other fixed contact are respectively possible. The metal high-frequency block having the first and second contact blocks having contacts disposed on the high-frequency block is fixedly disposed in a frame made of a non-magnetic material, and the frame is fixed on the high-frequency block. The electromagnetic block placed on the lower side of the central part of both side pieces of the frame is rotatably supported, and the central part is rotated by the magnetic action of the electromagnetic block. The armature is provided with an armature that pushes one contact block facing the end on the side close to the side and releases the push of the other contact block facing the end facing away. One component of the ram can stabilize the positional accuracy between the electromagnetic block and the armature, resulting in a stable armature stroke and an improvement in productivity. And a printed circuit board provided with at least a circuit for exciting the electromagnetic block, and the cover is attached to the high frequency block so as to accommodate the electromagnetic block, the frame including the armature and the printed circuit board. Assembling can be done by sequentially installing and attaching the cover, which has the effect of simplifying the assembling process and improving the assemblability, and further improving the high frequency characteristics with the high frequency block and adjusting the armature stroke on the frame side. Since the adjustment can be performed by the block, the adjustment is easy, and there is an effect that no adjustment is possible by improving the position accuracy.
[0088]
In the invention of claim 2, in the invention of claim 1, the frame has a ceiling piece by punching and bending of a nonmagnetic metal plate, and a side piece that hangs downward from both sides of the ceiling piece. Since the lower part of the frame is welded and fixed to the high-frequency block, the frame dimensions and bending shape are stabilized by the mold accuracy. As a result, the height position of the electromagnetic block fixedly arranged in the frame with respect to the high-frequency block is determined by the frame and is stable Therefore, height adjustment is unnecessary, and the frame is welded to the high frequency block, so that there is an effect that the grounding can be surely taken and high frequency leakage from the relay can be prevented.
[0089]
According to a third aspect of the invention, in the first or second aspect of the invention, the electromagnetic block includes a yoke that is caulked and fixed to the inner side surface of the ceiling piece of the frame, and one end of the iron core is caulked to the lower surface of both ends of the yoke. Because it has two sets of exciting coil parts that are fixed and wound around the iron core and suspended from the flat plate part of the yoke, the electromagnetic block can be fixed to the frame without screws. The position of the block relative to the frame is ensured, and as a result, the position accuracy of the high frequency block and the electromagnetic block is further improved by fixing the frame to which the electromagnetic block is fixed to the high frequency block. Adhesion for preventing the loosening of the film becomes unnecessary, and workability can be improved.
[0090]
According to a fourth aspect of the present invention, in the third aspect of the invention, the yoke is formed by bending a piece extending laterally from both sides of the central portion downwardly at a substantially right angle to the lower end portion of the hanging piece portion. Since the volume of the permanent magnet can be reduced compared to the conventional case, the cost of the permanent magnet is reduced, and the inclination of the yoke hanging piece is determined by the mold accuracy. The dimensional accuracy is stable, and as a result, the displacement at the magnetic pole part at the lower end of the permanent magnet is small compared to the case where a permanent magnet is bonded and bonded as in the past, and the stroke of the armature is stabilized, and the power consumption is reduced. There is an effect that reduction is possible.
[0091]
In the invention of claim 5, in the invention of claim 4, a step portion having an upward surface is formed on the inner surface of the lower end portion of the vertical piece of the yoke, and this step portion is parallel to the plate surface of the vertical piece portion. Since the corner portion of the upper end edge of the permanent magnet is brought into contact, the positioning of the permanent magnet mounting position is ensured.
[0092]
In the invention of claim 6, in the invention of claim 5, the width of the armature is longer than the width of the armature, and the center portion is fixed to the lower surface of the center portion of the armature, and both ends are protruded to both sides of the armature. A central piece and a spring piece integrally extended along the armature with a gap between the armature from both longitudinal ends of the central armature of the central piece Contact spring The downward ribs provided at the center portions of the side pieces on both sides of the frame are respectively inserted into the holes provided in the central piece portions of the contact springs protruding from both sides of the armature, and in the vicinity of the holes. Contact spring Because the armature is supported on the frame together with the magnetic force of the permanent magnet by contacting the downward dowels provided in the center of the side pieces on both sides of the frame with the upper surface of the center piece part of the frame, use a welding or caulking jig, etc. As a result, the armature can be assembled by hand and the productivity is improved, and the armature is attracted and held by the magnetic force of the permanent magnet, so the armature does not come off, the quality is stable, and the ribs Is provided corresponding to the central part of the armature, so that the sliding due to the rotation of the armature hardly occurs, and since the rib is inserted into the hole, an extra spring force is generated compared to fixing such as welding. In addition, since the dowels are in contact with the upper surfaces of both ends of the center piece of the contact spring, there is almost no friction near the hole when the armature rotates, and the operation is extremely stable. Check the push amount against the contact block. There is an effect that can be adjusted by bending the child spring.
[0093]
According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, the fixed contact pieces of the indicator terminals for taking out the signals indicating the operation state from the both sides of the lower part of both ends in the longitudinal direction of the electromagnetic block are respectively provided. At the same time, the pair of fixed contact pieces protruding from both sides of both ends of the electromagnetic block are contacted and separated by turning the armature at both ends of the armature in the longitudinal direction. Since the movable contact pieces of the pair of indicator springs projecting from each other, there is an effect that friction does not occur during the operation of the member of the indicator part as in the prior art, and the action of the indicator part is stabilized, and electromagnetic Since the empty space at both ends of the block is used, the relay height can be lowered, and it is configured as described above, so there are few indicator parts. Configuration can, moreover there is the effect that the final operating characteristics can be adjusted by bending the fixed contact piece Indiana locate terminals.
[0094]
The invention according to claim 8 is the invention according to claim 7, wherein the indicator spring is formed of a non-magnetic metal material, and the magnetic pole surface is formed on the upper surface of the armature that is attracted to the magnetic pole surface of the iron core of each exciting coil portion of the electromagnetic block. Between the armature and the armature Residual plate Because it is arranged as Residual plate And the indicator spring can be configured with a single component, and the number of components can be reduced and the cost can be reduced.
[0095]
Since the indicator spring and the contact spring are formed of the same metal material with the same thickness in the invention of any one of claims 6 to 8, the contact spring and the contact spring are formed at a time. It can be manufactured by punching. Therefore, it is possible to share materials and molds and improve productivity.
[0096]
According to a tenth aspect of the invention, in the invention according to any one of the first to ninth aspects, since the cover is made of a resin molded product, the parts can be easily processed, the productivity can be improved, and the connector terminals mounted on the printed circuit board. Since the terminal lead-out holes that lead out the wires to the outside are provided, the connector terminals on the printed circuit board side can be led directly to the outside without any special insulation, which facilitates assembly and increases the hole pitch of the terminal lead-out holes. Since it can be determined by mold accuracy, there is an effect that a commercially available connector with a narrow terminal pitch can be used.
[0097]
According to an eleventh aspect of the present invention, in the tenth aspect of the present invention, a locking hole is provided in the lower part of both end walls in the longitudinal direction of the cover, and each of the electromagnetic blocks Excitation coil section Since the coil bobbin is provided with a locking projection that locks into the locking hole when the cover is attached, the cover can be fixed simply by covering the cover, and it is easy to incorporate the cover because no work such as bonding is required. There is an effect.
[Brief description of the drawings]
FIG. 1 is a reduced exploded perspective view of an embodiment constituting a latching relay of the present invention.
FIG. 2 (a) is a partially broken front view of the same.
(B) is a side view in which the above is partially broken.
FIG. 3 is an enlarged cross-sectional view of the same high-frequency block.
FIG. 4 is an enlarged top view in which the base of the above is partially broken away.
FIG. 5 is a front view of the yoke used in the above.
FIG. 6 is a front view of a yoke used in the embodiment constituting the monostable relay of the present invention.
FIG. 7 is a front view in which the monostable relay is partially broken.
FIG. 8 is a partially broken front view of a conventional example.
[Explanation of symbols]
1 Drive mechanism block
6a-6c coaxial connector
3a, 3b Contact block
2 Armature
4 Subbase
8 base
9 Cover
22 Electromagnetic block
24 Printed circuit board
26 Board block
27 frames
29 yoke
32 Permanent magnet

Claims (11)

３つの同軸の固定接点を備えるとともに中央の固定接点と一端の固定接点との間及び中央の固定接点と他端の固定接点との間に対して夫々近接・離反自在に配置されるコンタクトを持つ第１、第２のコンタクトブロックを備えた金属製の高周波ブロックと、非磁性材からなるフレーム内に固定配置され、フレームを高周波ブロック上に固定することで高周波ブロック上に配置される電磁ブロックと、フレームの両側片の中央部の下部に回動自在に支持され、電磁ブロックの磁気作用により中央部を回動中心として回動して、この回動により高周波ブロック側に近接する側の端部に対向する一方のコンタクトブロックを押動し、離反する端部に対向する他方のコンタクトブロックの押動を解除する接極子と、フレーム上方に配置され電磁ブロックの励磁用の回路を少なくとも設けたプリント基板とを備え、電磁ブロック、接極子を含むフレーム及びプリント基板を収納するように高周波ブロックにカバーを被着して成ることを特徴とする同軸リレー。It has three coaxial fixed contacts, and has contacts arranged between the central fixed contact and one fixed contact and between the central fixed contact and the other fixed contact so as to be close to and away from each other. A metal high-frequency block having first and second contact blocks, an electromagnetic block which is fixedly arranged in a frame made of a non-magnetic material, and which is arranged on the high-frequency block by fixing the frame on the high-frequency block; The frame is supported at the lower part of the central part of the both side pieces of the frame so as to be rotatable, and rotates around the central part by the magnetic action of the electromagnetic block. An armature that pushes one of the contact blocks opposite to the other end and releases the push of the other contact block that faces away from the separating end, and an electromagnetic block disposed above the frame. At least it provided a printed substrate, a coaxial relay, characterized in that the electromagnetic block, a cover to a high frequency block to house the frame and printed circuit board containing the armature formed by depositing a circuit for excitation of. フレームは、非磁性金属板の打ち抜き・曲げ加工により天井片と、該天井片の両側より下方に垂下した側片とを有し、側片の下部を高周波ブロックに溶接固定して成ることを特徴とする請求項１記載の同軸リレー。The frame has a ceiling piece by punching and bending a nonmagnetic metal plate, and a side piece hanging downward from both sides of the ceiling piece, and the lower part of the side piece is fixed by welding to a high-frequency block. The coaxial relay according to claim 1. 電磁ブロックは、フレームの天井片の内側面にかしめ固定される継鉄と、継鉄の両端部の下面に夫々鉄心の一端をかしめ固定し、該鉄心周囲に励磁コイルを巻装して継鉄の平板部に垂下配設された２組の励磁コイル部を備えて成ることを特徴とする請求項１又は２記載の同軸リレー。The electromagnetic block consists of a yoke that is caulked and fixed to the inner side of the ceiling piece of the frame, and one end of the iron core is caulked and fixed to the lower surface of both ends of the yoke, and an excitation coil is wound around the iron core. The coaxial relay according to claim 1 or 2, further comprising two sets of exciting coil portions suspended from the flat plate portion. 継鉄は中央部の両側より側方へ延長された片を下方に略直角に折り曲げて形成せる垂下片部の下端部に永久磁石の上部を挟んで固定して成ること特徴とする請求項３記載の同軸リレー。4. The yoke is formed by sandwiching the upper part of a permanent magnet at the lower end part of a hanging piece part formed by bending a piece extending laterally from both sides of the central part downward at a substantially right angle. The described coaxial relay. 継鉄の垂直片部の下端部の内側面には上向き面を持つ段部を形成し、この段部に垂直片部の板面に並行する永久磁石の上端縁の角部を当接して成ることを特徴とする請求項４記載の同軸リレー。A step portion having an upward surface is formed on the inner side surface of the lower end portion of the vertical piece of the yoke, and a corner portion of the upper end edge of the permanent magnet parallel to the plate surface of the vertical piece portion is brought into contact with this step portion. The coaxial relay according to claim 4. 接極子の短手方向の幅よりも長く、その中央部を接極子の中央部下面に固着して両端を接極子の両側に突出させた中央片と、該中央片の中央部の接極子の長手方向側の両端より接極子との間で間隙をあけながら接極子に沿って一体延長したばね片とからなる接触子ばねを備え、フレームの両側の側片の中央部に設けられた下向きリブを接極子の両側より突出した接触子ばねの中央片の部位に設けた孔に夫々挿入するとともに該孔近傍の接触子ばねの中央片の部位の上面にフレームの両側の側片の中央部に設けた下向きだぼを当接して接極子を永久磁石の磁力と共にフレームに支持して成ることを特徴とする請求項５記載の同軸リレー。A central piece that is longer than the width of the armature in the short direction, the central portion of which is fixed to the lower surface of the central portion of the armature and both ends project on both sides of the armature, and the central armature of the central piece A downwardly-facing rib provided at the center of the side piece on both sides of the frame, comprising a contactor spring comprising a spring piece integrally extended along the armature with a gap between the longitudinal end and the armature Are inserted into holes provided in the central piece portion of the contact spring projecting from both sides of the armature, and on the center portion of the side piece on both sides of the frame on the upper surface of the central piece portion of the contact spring near the hole. 6. The coaxial relay according to claim 5, wherein a downward dowel is provided and the armature is supported on the frame together with the magnetic force of the permanent magnet. 電磁ブロックの長手方向の両端下部の両側より夫々側方に動作状態を示す信号を取り出すインディケート端子の固定接触片を夫々突出させるとともに、接極子の長手方向の両端部に、電磁ブロックの両端の両側より突出した対の上記固定接触片に、接極子の回動により接触・開離して対の固定接触片間をオンオフするインディケートばねの対の可動接触片を夫々突出させて成ることを特徴とすることを特徴とする請求項１乃至６の何れか記載の同軸リレー。The fixed contact pieces of the indicator terminal for taking out the signals indicating the operation state from the both sides of the lower part of the both ends in the longitudinal direction of the electromagnetic block are respectively protruded, and the both ends of the electromagnetic block are connected to the both ends of the armature in the longitudinal direction. The pair of fixed contact pieces projecting from both sides are formed by projecting the movable contact pieces of the pair of indicator springs that are turned on and off between the pair of fixed contact pieces by contact and separation by rotation of the armature. The coaxial relay according to any one of claims 1 to 6, wherein: インディケートばねを非磁性体金属材で形成し、電磁ブロックの各励磁コイル部の鉄心の磁極面に吸着される接極子の上面に磁極面と接極子の間に介在するレシジュアルプレートとして配設されることを特徴とする請求項７記載の同軸リレー。The indicator spring is made of a non-magnetic metal material, and is arranged on the upper surface of the armature that is attracted to the magnetic pole surface of the iron core of each exciting coil part of the electromagnetic block as a progressive plate that is interposed between the magnetic pole surface and the armature The coaxial relay according to claim 7, wherein: インディケートばねと接触子ばねとを同一厚みで同一金属材により形成したことを特徴とする請求項６乃至８の何れか記載の同軸リレー。9. The coaxial relay according to claim 6, wherein the indicator spring and the contact spring are formed of the same metal material with the same thickness. カバーを樹脂成型品で構成し、プリント基板に実装されるコネクタの端子を外部に導出する端子導出孔を設けたことを特徴とする請求項１乃至９の何れか記載の同軸リレー。10. The coaxial relay according to claim 1, wherein the cover is made of a resin molded product, and a terminal lead-out hole for leading the connector terminal mounted on the printed circuit board to the outside is provided. カバーの長手方向の両端壁の下部に係止孔を設けるとともに、電磁ブロックの各励磁コイル部のコイルボビンにカバーの被着時に係止孔に係止される係止突起を設けて成ることを特徴とする請求項１０記載の同軸リレー。A locking hole is provided at the lower part of both end walls in the longitudinal direction of the cover, and a locking projection that is locked to the locking hole when the cover is attached is provided on the coil bobbin of each exciting coil portion of the electromagnetic block. The coaxial relay according to claim 10.
JP11718699A 1999-04-23 1999-04-23 Coaxial relay Expired - Lifetime JP3809744B2 (en)

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JP3809744B2 true JP3809744B2 (en) 2006-08-16

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