JP3876576B2

JP3876576B2 - Electromagnetic relay

Info

Publication number: JP3876576B2
Application number: JP30473499A
Authority: JP
Inventors: 文啓紙谷; 豊隆西川; 和弘信時; 雅史中川; 靖松井
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-10-26
Filing date: 1999-10-26
Publication date: 2007-01-31
Anticipated expiration: 2019-10-26
Also published as: JP2001126601A

Description

【０００１】
【発明の属する技術分野】
本発明は、継鉄、これに巻回されるコイル部、継鉄に対して揺動自在に設けられる接極子、この接極子の揺動に応じて接離状態になる可動接点および固定接点などにより構成される電磁リレーに関するものである。
【０００２】
【従来の技術】
図９はこのような従来の電磁リレーを示す一部切欠斜視図、図１０は図９に示す接極子ブロックの平面図、図１１は図９に示す電磁石ブロックおよび接極子ブロックの平面図である。
【０００３】
図９に示す電磁リレーは、固定接点バネブロック９１と、可動接点バネブロック９２と、継鉄９３１、ボビン（コイルボビン）９３２、コイル部９３３およびコイル端子９３４により成る電磁石ブロック（コイルブロック）９３と、永久磁石９４１、一対の接極子９４２およびこれらを一体に固定する成形部材９４３により成る接極子ブロック９４と（図１０参照）、カード９５と、ボディ９６１および図略のカバーにより構成される器体とを備えている。
【０００４】
上記構成の電磁リレーにおける接極子ブロック９４は、図１０に示すように、一対の接極子９４２の間に永久磁石９４１を挟み、それらの周りを樹脂製の成形部材９４３で囲む構造になっており、成形部材９４３にはレバー９４３ａおよび支点９４３ｂが設けられている。そして、図１１に示すように、一対の接極子９４２の間に継鉄９３１の両端部が入り込むように、電磁石ブロック９３および接極子ブロック９４が配置され、支点９４３ｂにより接極子ブロック９４とボディ９６１との位置決めがなされる。なお、ボディ９６１には支点受け９６１ａが設けられている（図９参照）。
【０００５】
一方、固定接点バネブロック９１および可動接点バネブロック９２の各接点の開閉は、接極子ブロック９４が支点９４３ｂを中心に回動し、これに応じて、接極子ブロック９４のレバー９４３ａと可動接点バネブロック９２との間に設けられたカード９５を介して、レバー９４３ａが可動接点バネブロック９２を駆動することにより行われる。
【０００６】
【発明が解決しようとする課題】
上記従来の電磁リレーでは、図１１に示したように、両接極子９４２を磁極位置Ｂ１，Ｂ２で継鉄９３１の両端部に確実に吸着させれば、耐衝撃性に優れた磁気回路を構成することができる。
【０００７】
しかしながら、上記構造では、接極子ブロック９４が磁極位置Ｂ１，Ｂ２および支点９４３ｂの３点で位置決めされるため、部品寸法のばらつきなどで、図１２に示すように、磁極位置Ｂ１，Ｂ２のいずれかで（図１２の例ではＢ２側）、継鉄９３１の端部と接極子ブロック９４の接極子９４２との間に隙間が生じ、この結果、磁気特性の変動が大きくなり、耐衝撃性が劣化してしまう。また、感度調整が非常に難しくなる。
【０００８】
本発明は、上記事情に鑑みてなされたものであり、磁気特性の変動が小さくなり、耐衝撃性が向上し、感度調整が容易な電磁リレーを提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記課題を解決するために請求項１記載の発明の電磁リレーは、一の方向に屈曲する両端部を有して成る継鉄と、前記継鉄における両端部間の中央部に巻回されるコイル部と、前記継鉄の両端部間に配置される永久磁石と、前記継鉄の両端部間の長さよりも長めに形成され、前記永久磁石に対して前記一の方向側に配置される接極子と、前記継鉄の両端部に対してそれぞれ前記接極子の両端側を揺動自在にして、前記永久磁石および接極子を一体に固定するヒンジバネとを備え、前記永久磁石と前記接極子との間に突部が設けられ、前記継鉄の両端部間の長さと同程度の長さの板状に形成されて成り、前記永久磁石に対して前記一の方向と逆の方向側に配置される補助継鉄を備え、前記永久磁石は前記継鉄の両端部間の長さよりも短い板状に形成され、前記接極子は、板状に形成され、前記永久磁石との対向面に前記突部を有し、前記ヒンジバネは、前記接極子における前記一の方向側の面に取着される中央部と、この中央部から前記一の方向と逆の方向に延びて前記補助継鉄の両側面にそれぞれ取着されるとともに前記永久磁石を狭持する両側部とを有する形状に形成され、前記永久磁石、接極子および補助継鉄は前記ヒンジバネにより一体に固定されるのである。
【００１０】
この構成では、接極子の位置が突部とどちらか一方の磁極位置との２点で決まるので、不要な隙間が生じなくなって磁気ギャップが生じなくなる。この結果、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。
【００１１】
また、一の方向に屈曲する両端部を有して成る継鉄と、前記継鉄における両端部間の中央部に巻回されるコイル部と、前記継鉄の両端部間に配置される永久磁石と、前記継鉄の両端部間の長さよりも長めに形成され、前記永久磁石に対して前記一の方向側に配置される接極子と、前記継鉄の両端部に対してそれぞれ前記接極子の両端側を揺動自在にして、前記永久磁石および接極子を一体に固定するヒンジバネとを備え、前記永久磁石と前記接極子との間に突部が設けられ、前記継鉄の両端部間の長さと同程度の長さの板状に形成されて成り、前記永久磁石に対して前記一の方向と逆の方向側に配置される補助継鉄を備え、前記永久磁石は前記継鉄の両端部間の長さよりも短い板状に形成され、前記接極子は、板状に形成され、前記永久磁石との対向面に前記突部を有し、前記ヒンジバネは、前記接極子における前記一の方向と逆の方向側の面に取着される中央部と、この中央部から前記逆の方向に延びて前記補助継鉄の両側面にそれぞれ取着されるとともに前記永久磁石を狭持する両側部とを有する形状に形成され、前記永久磁石、接極子および補助継鉄は前記ヒンジバネにより一体に固定される構成でもよい（請求項２）。この構成によれば、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。さらに、永久磁石、接極子および補助継鉄をヒンジバネにより一体に固定して成る接極子ブロックにおける揺動による摩耗を好適に防止することができる。
【００１２】
また、請求項１または２記載の電磁リレーにおいて、ボディおよびカバーにより成る器体を備え、前記補助継鉄は前記ボディとの固定部を有する構成でもよい（請求項３）。この構成によれば、組立てが容易になる。
【００１３】
また、請求項３記載の電磁リレーにおいて、前記固定部は複数の突起であり、前記ボディには前記各突起が嵌入される溝が形成されている構成でもよい（請求項４）。この構成によれば、組立てが容易になる。
【００１４】
さらに、請求項１〜４のいずれかに記載の電磁リレーにおいて、固定側端子、この固定側端子に締結される板バネ、およびこの板バネに設けられる固定接点により成る固定接点バネブロックと、可動側端子、この可動側端子に締結される板バネ、およびこの板バネに設けられる可動接点により成る可動接点バネブロックと、前記接極子および可動接点バネブロックの双方に取り付けられ、前記接極子の揺動に応じて前記固定接点および可動接点の接離を行うためのカードとを備える構成でもよい（請求項５）。この構成によれば、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。
【００１５】
【発明の実施の形態】
図１は本発明の第１実施形態に係る電磁リレーの一部切欠斜視図、図２は図１に示す固定接点バネブロック、可動接点バネブロック、継鉄およびカードの斜視図、図３は図１に示す接極子ブロックの組立および分解斜視図、図４は図１に示す電磁石ブロックおよび接極子ブロックを前方および右方から見た図、図５は図１の一部前面図およびそのＡ−Ａ線断面図で、これらの図を用いて以下に第１実施形態の説明を行う。なお、図４（ａ）において、Ｂは磁極位置を示し、Ｃは回転中心を示す。また、図４（ｂ）のヒンジバネにおけるＤはねじれ部分を示す。
【００１６】
図１に示す電磁リレーは、いわゆるラッチ型に属し、大別すると、固定接点バネブロック１１と、可動接点バネブロック１２と、電磁石ブロック１３と、接極子ブロック１４と、カード１５と、これら各部品を内部に収納する器体１６とを備えている。
【００１７】
固定接点バネブロック１１は、図２（ａ）に示すように、金属板を屈曲して成る固定側端子１１１と、この固定側端子１１１の上端にリベットで下端が締結される金属製の板バネ１１２と、この板バネ１１２の上部に固着される金属製の固定接点とにより構成される。ただし、固定接点は、板バネ１１２の左側の面（図２（ａ）では背面）に形成された有底で円筒状の溝に固着され、接点部が左方に突出している。
【００１８】
可動接点バネブロック１２は、図２（ｂ）に示すように、金属板により成る可動側端子１２１と、この可動側端子１２１の上端にリベットで下端が締結される金属製の板バネ１２２と、この板バネ１２２の上部に固着される金属製の可動接点１２３とにより構成されている。また、板バネ１２２の上端にはカード１５装着用の突片１２２ａが上方に突設されている。
【００１９】
電磁石ブロック１３は、図１に示すように、右方に屈曲するＴ字状の両端部１３１ａを有する形状に形成される継鉄１３１と（図２（ｃ）参照）、樹脂製のボビン１３２と、このボビン１３２を介して継鉄１３１における両端部１３１ａ間の中央部にコイル電線を巻回して成るコイル部１３３と、ボビン１３２の下端側に一体に固着され、コイル部１３３の両端がそれぞれ接続（例えば半田接続）される一対のコイル端子１３４とにより構成されている。また、ボビン１３２の後面側には、継鉄１３１挿入用の溝（図示せず）が形成されている。
【００２０】
ここで、電磁石ブロック１３の製造手順を説明すると、まず、ボビン１３２の上記溝に継鉄１３１を挿入し、コイル電線をボビン１３２に巻回してコイル部１３３を設け、続いて、コイル部１３３の両端を一対のコイル端子１３４にそれぞれ接続する。これにより、電磁石ブロック１３が得られる。
【００２１】
接極子ブロック１４は、図１および図３に示すように、永久磁石１４１、接極子１４２、補助継鉄１４３およびヒンジバネ１４４により構成されている。
【００２２】
永久磁石１４１は、図４（ａ）に示すように、上下方向の長さが継鉄１３１の両端部１３１ａ間の長さよりも短い板状（図３（ｂ）の例では直方体）に形成され、右面側が継鉄１３１の両端部１３１ａよりも右方に若干突出するように配置される。また、永久磁石１４１は、本電磁リレーの組立ての前／後に、右面側がＳ極となり左面側がＮ極となるように、または右面側がＮ極となり左面側がＳ極となるように着磁される。例えば、本電磁リレーの組立後に永久磁石１４１を着磁すれば、本電磁リレー内部への鉄粉などの付着および混入を防止することができる。
【００２３】
接極子１４２は、上下方向の長さが継鉄１３１の両端部１３１ａ間の長さよりも長い板状に形成され、図３（ｂ）に示すように、上端に突設されたカード１５装着用の突部１４２ａと、左面中央に突設された突部１４２ｂと（図４（ａ）参照）、リベット締結用であって右面における上下側にそれぞれ突設された一対の軸部１４２ｃとを有し、図４に示すように、永久磁石１４１に対して右側に配置される。
【００２４】
補助継鉄１４３は、上下方向の長さが継鉄１３１の両端部１３１ａ間の長さと同程度で若干短い長さの板状に形成され、図３（ｂ）に示すように、ヒンジバネ１４４の固定用であって前方および後方の各側壁中央に突設された突起１４３ａと、当該補助継鉄１４３を器体１６に固定するためのものであって後方の側壁の両端側にそれぞれ突設された一対の突起１４３ｂと、左右方向に貫通された２つの孔１４３ｃとを有し、図４（ａ）に示すように、永久磁石１４１に対して左側に配置される。
【００２５】
ヒンジバネ１４４は、永久磁石１４１、接極子１４２および補助継鉄１４３を一体に固定するもので、弾性を有する薄手の金属板により形成され、図３（ｂ）に示すように、前後上下に伸びるクロス状に形成され接極子１４２の右面に取着される中央部１４４ａと、上下左右に伸びるクロス状に形成され中央部１４４ａの前後端からそれぞれ左方に延びて補助継鉄１４３の前後両側面に取着される両側部１４４ｂとを有している。また、中央部１４４ａの上下に伸びる各部には、接極子１４２の軸部１４２ｃが挿入される孔１４４ｄが穿設されている。また、各側部１４４ｂの左方に伸びる部分には、補助継鉄１４３の突起１４３ａが嵌入される孔１４４ｅが穿設されている。さらに、各側部１４４ｂの上下端には、永久磁石１４１の上下動を阻止するための突片１４４ｆが形成されている。
【００２６】
ここで、接極子ブロック１４の組立手順を説明する。まず、ヒンジバネ１４４の各孔１４４ｄに、接極子１４２の対応する軸部１４２ｃを挿入し、続いて、各軸部１４２ｃの先端側をかしめる。これにより、接極子１４２とヒンジバネ１４４とが締結される。この後、永久磁石１４１を両側部１４４ｂで狭持させ、続いて、ヒンジバネ１４４の各孔１４４ｅに、補助継鉄１４３の対応する突起１４３ａを嵌入する。これにより、永久磁石１４１、接極子１４２および補助継鉄１４３をヒンジバネ１４４で一体に固定した接極子ブロック１４が得られる。
【００２７】
カード１５は、図２（ｄ）に示すように、樹脂などにより板状に形成され、可動接点バネブロック１２の突片１２２ａの嵌入用であって右端側に穿設された孔１５ａと、接極子１４２の突部１４２ａの嵌入用であって左端側に穿設された孔１５ｂと、左右方向に伸びる孔１５ｃとを有している。
【００２８】
器体１６は、図１に示すように、樹脂製のボディ１６１およびカバー１６２により構成される。ボディ１６１は、固定接点バネブロック１１および可動接点バネブロック１２を収納固定するためのものであって右側の部分から前方に突設された隔壁１６１ａ〜１６１ｅと、補助継鉄１４３の各突起１４３ｂが嵌入される溝１６１ｆと（図５（ｂ）参照）、継鉄１３１の各端部１３１ａの下端側が嵌入される溝１６１ｇと（図５（ｂ）参照）、カード１５の孔１５ｃに挿入してカード１５の左右方向の動きを規制するものであって隔壁１６１ｅの上面に突設された突部（図示せず）と、電磁石ブロック１３の一対のコイル端子１３４が挿通される一対の孔（図示せず）とを有している。ここで、嵌入用の溝１６１ｆおよび溝１６１ｇを設け、それぞれを例えば突起１４３ｂおよび端部１３１ａの嵌入部分の外形に対応する形状に形成することで、電磁石ブロック１３と接極子ブロック１４との配置関係を所定の精度で管理することができる。一方、カバー１６２は、ボディ１６１の前面側を閉塞する箱状に形成されている。
【００２９】
次に、このように構成される電磁リレーの組立手順の一例を説明する。まず、固定接点バネブロック１１および可動接点バネブロック１２をボディ１６１の所定位置に収納固定する。このとき、さらに接着剤を使用するのが望ましい。
【００３０】
この後、接極子ブロック１４の各突起１４３ｂをボディ１６１の対応する溝１６１ｆに嵌入して、接極子ブロック１４をボディ１６１に固定する。このとき、さらに接着剤を使用するのが望ましい。
【００３１】
この後、電磁石ブロック１３の各コイル端子１３４をボディ１６１の対応する孔に挿入し、続いて、継鉄１３１の各端部１３１ａの下端側を対応する溝１６１ｇに嵌入して、電磁石ブロック１３をボディ１６１に固定する。このとき、さらに接着剤を使用するのが望ましい。
【００３２】
この後、カード１５の孔１５ａおよび１５ｂにそれぞれ可動接点バネブロック１２の突片１２２ａおよび接極子１４２の突部１４２ａを嵌入する。続いて、ボディ１６１にカバー１６２を被せて固定すれば、本電磁リレーが得られる。
【００３３】
このようにして組み立てられた本電磁リレーでは、図４（ａ）に示すように、接極子１４２の位置が突部１４２ｂと磁極位置（図４（ａ）の例ではＢ）との２点で決まるので、不要な隙間が生じなくなって磁気ギャップが生じなくなる。これにより、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。
【００３４】
さらに、接極子ブロック１４を一体構造にしたことに加えて、補助継鉄１４３に、磁束を流すための磁路の機能以外に、接極子ブロック１４をボディ１６１に固定するための突起１４３ｂを設けたことにより、電磁リレーの組立てが容易になる。
【００３５】
なお、第１実施形態では、補助継鉄にヒンジバネを取り付けるために、補助継鉄１４３に一対の突起１４３ａが設けられる構造になっているが、例えば、突起１４３ａを設けずに、補助継鉄にヒンジバネを取り付けるための別の構造を採用しても構わない。この構造例を図６に示す。この図６において、補助継鉄２４３は、突起１４３ａが除去されている以外は補助継鉄１４３と同様の形状に形成されている。一方、ヒンジバネ２４４は、各孔１４４ｅの左方に、補助継鉄２４３との係止突起２４４ｇが形成されている以外はヒンジバネ１４４と同様の形状に形成されている。
【００３６】
図７は本発明の第２実施形態に係る電磁リレーにおける電磁石ブロックおよび接極子ブロックを前方および右方から見た図、図８は図７のヒンジバネを前方および右方から見た図で、これら図を用いて以下に第２実施形態の説明を行う。なお、図７（ａ）のＥは回転中心を示す。
【００３７】
本電磁リレーは、固定接点バネブロック１１、可動接点バネブロック１２、電磁石ブロック１３、カード１５および器体１６を第１実施形態と同様に備えるほか、第１実施形態との相違点として接極子ブロック４４を備える。
【００３８】
この接極子ブロック４４は、図７に示すように、第１実施形態と同様の永久磁石１４１および補助継鉄１４３と、第１実施形態と異なる接極子４４２およびヒンジバネ４４４とにより構成されている。
【００３９】
接極子４４２は、上下方向の長さが継鉄１３１の両端部１３１ａ間の長さよりも長い板状に形成され、突部１４２ａおよび突部１４２ｂを第１実施形態と同様に有しているほか、リベット締結用であって左面における上下側にそれぞれ突設された一対の軸部４４２ｃを第１実施形態との相違点として有し、永久磁石１４１に対して右側に配置される。
【００４０】
ヒンジバネ４４４は、永久磁石１４１、接極子４４２および補助継鉄１４３を一体に固定するもので、弾性を有する薄手の金属板により形成され、図８に示すように、前後上下に伸びるクロス状に形成され接極子４４２の左面に取着される中央部４４４ａと、この中央部４４４ａの前後端からそれぞれ左方に延びて補助継鉄１４３の前後両側面に取着されるＴ字状の両側部４４４ｂとを有している。また、中央部４４４ａの上下に伸びる各部には、接極子４４２の軸部４４２ｃが挿入される孔４４４ｄが穿設されている。また、各側部４４４ｂには、補助継鉄１４３の突起１４３ａが嵌入される孔４４４ｅが穿設されている。さらに、各側部４４４ｂの上下端には、永久磁石１４１の上下動を阻止するための突片４４４ｆが形成されている。
【００４１】
ここで、接極子ブロック４４の組立手順を説明する。まず、ヒンジバネ４４４の各孔４４４ｄに、接極子４４２の対応する軸部４４２ｃを挿入し、続いて、各軸部４４２ｃの先端側をかしめる。これにより、接極子４４２とヒンジバネ４４４とが締結される。この後、永久磁石１４１を両側部４４４ｂで狭持させ、続いて、ヒンジバネ４４４の各孔４４４ｅに、補助継鉄１４３の対応する突起１４３ａを嵌入する。これにより、永久磁石１４１、接極子４４２および補助継鉄１４３をヒンジバネ４４４で一体に固定した接極子ブロック４４が得られる。
【００４２】
このように構成される電磁リレーは第１実施形態と同様の手順で組み立てられる。また、本電磁リレーにおいても、接極子４４２の位置が突部１４２ｂとどちらか一方の磁極位置との２点で決まるので、不要な隙間が生じなくなって磁気ギャップが生じなくなる。これにより、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。
【００４３】
さらに、接極子ブロック４４における揺動による摩耗を好適に防止することができる。第１実施形態では、図４に示すように、ヒンジバネ１４４がねじれ部分Ｄでねじれることにより、接極子１４２の回転運動を作り出しているが、回転中心Ｃと突部１４２ｂとが高さ方向（左右方向）にずれているので、接極子１４２の突部１４２ｂが永久磁石１４１上で滑り運動を行う。このため、接極子１４２の突部１４２ｂと永久磁石１４１との間の摩擦が大きくなり、それら双方が摩耗しやすくなる。これに対して、第２実施形態では、図７に示すように、接極子４４２の回転中心Ｅと接極子４４２の突部１４２ｂとの高さ方向のずれがほとんどないので、接極子４４２の突部１４２ｂがヒンジバネ４４４または永久磁石１４１上でころがり運動を行う。これにより、接極子４４２の突部１４２ｂとヒンジバネ４４４または永久磁石１４１との間に生じる摩擦力が小さくなり、それらの摩耗を防止することができる。
【００４４】
【発明の効果】
以上のことから明らかなように、請求項１記載の発明によれば、一の方向に屈曲する両端部を有して成る継鉄と、前記継鉄における両端部間の中央部に巻回されるコイル部と、前記継鉄の両端部間に配置される永久磁石と、前記継鉄の両端部間の長さよりも長めに形成され、前記永久磁石に対して前記一の方向側に配置される接極子と、前記継鉄の両端部に対してそれぞれ前記接極子の両端側を揺動自在にして、前記永久磁石および接極子を一体に固定するヒンジバネとを備え、前記永久磁石と前記接極子との間に突部が設けられ、前記継鉄の両端部間の長さと同程度の長さの板状に形成されて成り、前記永久磁石に対して前記一の方向と逆の方向側に配置される補助継鉄を備え、前記永久磁石は前記継鉄の両端部間の長さよりも短い板状に形成され、前記接極子は、板状に形成され、前記永久磁石との対向面に前記突部を有し、前記ヒンジバネは、前記接極子における前記一の方向側の面に取着される中央部と、この中央部から前記一の方向と逆の方向に延びて前記補助継鉄の両側面にそれぞれ取着されるとともに前記永久磁石を狭持する両側部とを有する形状に形成され、前記永久磁石、接極子および補助継鉄は前記ヒンジバネにより一体に固定されるので、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。
【００４５】
請求項２記載の発明によれば、一の方向に屈曲する両端部を有して成る継鉄と、前記継鉄における両端部間の中央部に巻回されるコイル部と、前記継鉄の両端部間に配置される永久磁石と、前記継鉄の両端部間の長さよりも長めに形成され、前記永久磁石に対して前記一の方向側に配置される接極子と、前記継鉄の両端部に対してそれぞれ前記接極子の両端側を揺動自在にして、前記永久磁石および接極子を一体に固定するヒンジバネとを備え、前記永久磁石と前記接極子との間に突部が設けられ、前記継鉄の両端部間の長さと同程度の長さの板状に形成されて成り、前記永久磁石に対して前記一の方向と逆の方向側に配置される補助継鉄を備え、前記永久磁石は前記継鉄の両端部間の長さよりも短い板状に形成され、前記接極子は、板状に形成され、前記永久磁石との対向面に前記突部を有し、前記ヒンジバネは、前記接極子における前記一の方向と逆の方向側の面に取着される中央部と、この中央部から前記逆の方向に延びて前記補助継鉄の両側面にそれぞれ取着されるとともに前記永久磁石を狭持する両側部とを有する形状に形成され、前記永久磁石、接極子および補助継鉄は前記ヒンジバネにより一体に固定されるので、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。さらに、永久磁石、接極子および補助継鉄をヒンジバネにより一体に固定して成る接極子ブロックにおける揺動による摩耗を好適に防止することができる。
【００４６】
請求項３記載の発明によれば、請求項１または２記載の電磁リレーにおいて、ボディおよびカバーにより成る器体を備え、前記補助継鉄は前記ボディとの固定部を有するので、組立てが容易になる。
【００４７】
請求項４記載の発明によれば、請求項３記載の電磁リレーにおいて、前記固定部は複数の突起であり、前記ボディには前記各突起が嵌入される溝が形成されているので、組立てが容易になる。
【００４８】
請求項５記載の発明によれば、請求項１〜４のいずれかに記載の電磁リレーにおいて、固定側端子、この固定側端子に締結される板バネ、およびこの板バネに設けられる固定接点により成る固定接点バネブロックと、可動側端子、この可動側端子に締結される板バネ、およびこの板バネに設けられる可動接点により成る可動接点バネブロックと、前記接極子および可動接点バネブロックの双方に取り付けられ、前記接極子の揺動に応じて前記固定接点および可動接点の接離を行うためのカードとを備えるので、磁気特性の変動が小さくなり、耐衝撃性が向上する。また、感度調整が容易になる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る電磁リレーの一部切欠斜視図である。
【図２】（ａ）〜（ｄ）はそれぞれ図１に示す固定接点バネブロック、可動接点バネブロック、継鉄およびカードの斜視図である。
【図３】（ａ），（ｂ）はそれぞれ図１に示す接極子ブロックの組立および分解斜視図である。
【図４】（ａ），（ｂ）はそれぞれ図１に示す電磁石ブロックおよび接極子ブロックを前方および右方から見た図である。
【図５】（ａ），（ｂ）はそれぞれ図１の一部前面図およびＡ−Ａ線断面図である。
【図６】補助継鉄にヒンジバネを取り付けるための別の構造例を示す図である。
【図７】（ａ），（ｂ）はそれぞれ本発明の第２実施形態に係る電磁リレーにおける電磁石ブロックおよび接極子ブロックを前方および右方から見た図である。
【図８】（ａ），（ｂ）はそれぞれ図８のヒンジバネを前方および右方から見た図である。
【図９】従来の電磁リレーを示す一部切欠斜視図である。
【図１０】図９に示す接極子ブロックの平面図である。
【図１１】図９に示す電磁石ブロックおよび接極子ブロックの平面図である。
【図１２】図９に示す電磁リレーの不具合の説明図である。
【符号の説明】
１１固定接点バネブロック
１２可動接点バネブロック
１３電磁石ブロック
１４，３４，４４接極子ブロック
１５カード
１６器体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a yoke, a coil portion wound around the yoke, an armature provided so as to be swingable with respect to the yoke, a movable contact and a fixed contact that are brought into and out of contact with the swing of the armature, etc. It is related with the electromagnetic relay comprised by these.
[0002]
[Prior art]
Figure 9 Is a partially cutaway perspective view showing such a conventional electromagnetic relay, FIG. 10 Is a figure 9 Plan view of the armature block shown in Fig. 11 Is a figure 9 It is a top view of the electromagnet block and armature block which are shown in FIG.
[0003]
Figure 9 The electromagnetic relay shown in FIG. 1 includes a fixed contact spring block 91, a movable contact spring block 92, an electromagnet block (coil block) 93 including a yoke 931, a bobbin (coil bobbin) 932, a coil portion 933 and a coil terminal 934, and a permanent magnet. 941, an armature block 94 comprising a pair of armatures 942 and a molding member 943 for fixing them together (see FIG. 10 Reference), a card 95, and a body constituted by a body 961 and a cover (not shown).
[0004]
The armature block 94 in the electromagnetic relay having the above configuration is shown in FIG. 10 As shown in FIG. 4, a permanent magnet 941 is sandwiched between a pair of armatures 942, and the periphery of the permanent magnet 941 is surrounded by a resin molding member 943. The molding member 943 is provided with a lever 943a and a fulcrum 943b. ing. And figure 11 As shown, the electromagnet block 93 and the armature block 94 are arranged so that both ends of the yoke 931 enter between the pair of armatures 942, and the armature block 94 and the body 961 are positioned by the fulcrum 943b. Made. The body 961 is provided with a fulcrum support 961a (see FIG. 9 reference).
[0005]
On the other hand, when the contacts of the fixed contact spring block 91 and the movable contact spring block 92 are opened and closed, the armature block 94 rotates around the fulcrum 943b, and the lever 943a of the armature block 94 and the movable contact spring are accordingly moved. The lever 943 a drives the movable contact spring block 92 through a card 95 provided between the block 92 and the block 92.
[0006]
[Problems to be solved by the invention]
In the above conventional electromagnetic relay, 11 As shown in FIG. 2, if the both armatures 942 are securely attracted to both ends of the yoke 931 at the magnetic pole positions B1 and B2, a magnetic circuit having excellent impact resistance can be configured.
[0007]
However, in the above structure, the armature block 94 is positioned at three points of the magnetic pole positions B1 and B2 and the fulcrum 943b. 12 As shown in FIG. 12 In this example, a gap is formed between the end portion of the yoke 931 and the armature 942 of the armature block 94, resulting in a large variation in magnetic characteristics and a deterioration in impact resistance. Moreover, sensitivity adjustment becomes very difficult.
[0008]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electromagnetic relay in which fluctuations in magnetic properties are reduced, impact resistance is improved, and sensitivity adjustment is easy.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, an electromagnetic relay according to a first aspect of the present invention is wound around a yoke having both ends bent in one direction and a central portion between both ends of the yoke. A coil portion, a permanent magnet disposed between both end portions of the yoke, and a length longer than the length between both end portions of the yoke, and disposed on the one direction side with respect to the permanent magnet. An armature, and a hinge spring for integrally fixing the permanent magnet and the armature so that both end sides of the armature can swing with respect to both ends of the yoke, and the permanent magnet and the armature. Protrusions are provided between The auxiliary yoke is formed in the shape of a plate having the same length as the length between both ends of the yoke, and is arranged on the opposite side to the one direction with respect to the permanent magnet. The permanent magnet is formed in a plate shape shorter than the length between both end portions of the yoke, the armature is formed in a plate shape, has the protrusion on the surface facing the permanent magnet, and the hinge spring Is attached to both sides of the auxiliary yoke extending from the central portion in a direction opposite to the one direction, and being attached to the surface on the one direction side of the armature. In addition, the permanent magnet, the armature and the auxiliary yoke are integrally fixed by the hinge spring. It is.
[0010]
In this configuration, since the position of the armature is determined by two points of the protrusion and one of the magnetic pole positions, an unnecessary gap is not generated and a magnetic gap is not generated. As a result, fluctuations in magnetic properties are reduced and impact resistance is improved. Moreover, sensitivity adjustment becomes easy.
[0011]
Also, A yoke having both end portions bent in one direction, a coil portion wound around a central portion between both end portions of the yoke, and a permanent magnet disposed between both end portions of the yoke An armature formed longer than the length between both ends of the yoke, and disposed on the one direction side with respect to the permanent magnet, and the armature with respect to both ends of the yoke, respectively. A hinge spring for integrally fixing the permanent magnet and the armature so that both end sides are swingable, and a protrusion is provided between the permanent magnet and the armature; It is formed in the shape of a plate having the same length as the length between both end portions of the yoke, and includes an auxiliary yoke disposed on the opposite side to the one direction with respect to the permanent magnet, The permanent magnet is formed in a plate shape shorter than the length between both end portions of the yoke, the armature is formed in a plate shape, has the protrusion on the surface facing the permanent magnet, and the hinge spring is A central portion attached to a surface of the armature opposite to the one direction, and extending from the central portion in the opposite direction and attached to both side surfaces of the auxiliary yoke. The permanent magnet, the armature, and the auxiliary yoke may be integrally fixed by the hinge spring. 2 ). According to this configuration, fluctuations in magnetic characteristics are reduced, and impact resistance is improved. Moreover, sensitivity adjustment becomes easy. Furthermore, it is possible to suitably prevent wear due to rocking in the armature block in which the permanent magnet, armature and auxiliary yoke are integrally fixed by a hinge spring.
[0012]
Claims 1 Or 2 The electromagnetic relay described above may include a body including a body and a cover, and the auxiliary yoke may have a fixing portion with the body. 3 ). According to this configuration, assembly is facilitated.
[0013]
Claims 3 In the electromagnetic relay described above, the fixing portion may be a plurality of protrusions, and the body may be formed with grooves into which the protrusions are inserted. 4 ). According to this configuration, assembly is facilitated.
[0014]
Furthermore, claims 1 to 4 In the electromagnetic relay according to any one of the above, a fixed contact spring block including a fixed terminal, a plate spring fastened to the fixed terminal, and a fixed contact provided on the plate spring, a movable terminal, and the movable terminal A fixed spring is attached to both the armature and the movable contact spring block, and the fixed contact according to the swing of the armature. And a card for performing contact and separation of the movable contact (claim) 5 ). According to this configuration, fluctuations in magnetic characteristics are reduced, and impact resistance is improved. Moreover, sensitivity adjustment becomes easy.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
1 is a partially cutaway perspective view of an electromagnetic relay according to a first embodiment of the present invention, FIG. 2 is a perspective view of a fixed contact spring block, a movable contact spring block, a yoke and a card shown in FIG. 1, and FIG. 4 is a front view and a right side view of the electromagnet block and the armature block shown in FIG. 1, and FIG. 5 is a partial front view of FIG. The first embodiment will be described below with reference to the A-line cross-sectional views. In FIG. 4A, B represents the magnetic pole position, and C represents the center of rotation. Further, D in the hinge spring in FIG. 4B indicates a twisted portion.
[0016]
The electromagnetic relay shown in FIG. 1 belongs to a so-called latch type, and is roughly classified into a fixed contact spring block 11, a movable contact spring block 12, an electromagnet block 13, an armature block 14, a card 15, and each of these components. And a container 16 for storing the inside.
[0017]
As shown in FIG. 2A, the fixed contact spring block 11 includes a fixed side terminal 111 formed by bending a metal plate, and a metal plate spring whose lower end is fastened to the upper end of the fixed side terminal 111 with a rivet. 112 and a metal fixed contact fixed to the upper portion of the leaf spring 112. However, the fixed contact is fixed to a bottomed cylindrical groove formed on the left surface of the leaf spring 112 (the back surface in FIG. 2A), and the contact portion protrudes to the left.
[0018]
As shown in FIG. 2B, the movable contact spring block 12 includes a movable terminal 121 made of a metal plate, a metal leaf spring 122 whose lower end is fastened with a rivet to the upper end of the movable terminal 121, It is comprised by the metal movable contact 123 fixed to the upper part of this leaf | plate spring 122. FIG. Further, a protruding piece 122a for mounting the card 15 protrudes upward from the upper end of the leaf spring 122.
[0019]
As shown in FIG. 1, the electromagnet block 13 includes a yoke 131 formed in a shape having T-shaped end portions 131a bent to the right (see FIG. 2C), a resin bobbin 132, and the like. The coil portion 133 is formed by winding a coil wire around the central portion between both end portions 131a of the yoke 131 via the bobbin 132, and is integrally fixed to the lower end side of the bobbin 132, and both ends of the coil portion 133 are connected to each other. It is comprised by a pair of coil terminal 134 (for example, solder connection). Further, a groove (not shown) for inserting the yoke 131 is formed on the rear surface side of the bobbin 132.
[0020]
Here, the manufacturing procedure of the electromagnet block 13 will be described. First, the yoke 131 is inserted into the groove of the bobbin 132, the coil electric wire is wound around the bobbin 132, and the coil part 133 is provided. Both ends are connected to a pair of coil terminals 134, respectively. Thereby, the electromagnet block 13 is obtained.
[0021]
As shown in FIGS. 1 and 3, the armature block 14 includes a permanent magnet 141, an armature 142, an auxiliary yoke 143, and a hinge spring 144.
[0022]
As shown in FIG. 4A, the permanent magnet 141 is formed in a plate shape (a rectangular parallelepiped in the example of FIG. 3B) whose length in the vertical direction is shorter than the length between both ends 131 a of the yoke 131. The right surface side is arranged so as to protrude slightly to the right from both end portions 131a of the yoke 131. The permanent magnet 141 is magnetized so that the right surface side is the S pole and the left surface side is the N pole, or the right surface side is the N pole and the left surface side is the S pole before / after the electromagnetic relay is assembled. For example, if the permanent magnet 141 is magnetized after the assembly of the electromagnetic relay, it is possible to prevent adhesion and mixing of iron powder or the like inside the electromagnetic relay.
[0023]
The armature 142 is formed in a plate shape in which the length in the vertical direction is longer than the length between the both end portions 131a of the yoke 131, and as shown in FIG. A protrusion 142a, a protrusion 142b protruding in the center of the left surface (see FIG. 4A), and a pair of shaft portions 142c for rivet fastening and protruding on the upper and lower sides of the right surface. As shown in FIG. 4, the permanent magnet 141 is disposed on the right side.
[0024]
The auxiliary yoke 143 is formed in a plate shape having a length that is substantially the same as the length between the both end portions 131a of the yoke 131 and is slightly shorter, as shown in FIG. A projection 143a projecting at the center of each of the front and rear side walls and a fixing yoke 143 for fixing the auxiliary yoke 143 to the body 16 and projecting from both ends of the rear side wall. The pair of protrusions 143b and the two holes 143c penetrating in the left-right direction are disposed on the left side of the permanent magnet 141 as shown in FIG.
[0025]
The hinge spring 144 integrally fixes the permanent magnet 141, the armature 142, and the auxiliary yoke 143, is formed of an elastic thin metal plate, and extends in the front-rear and up-down direction as shown in FIG. 3B. Formed on the right surface of the armature 142, and a cross-shaped portion extending in the vertical and horizontal directions and extending to the left from the front and rear ends of the central portion 144a on the front and rear side surfaces of the auxiliary yoke 143. And both side portions 144b to be attached. In addition, a hole 144d into which the shaft portion 142c of the armature 142 is inserted is formed in each portion extending up and down of the central portion 144a. Further, a hole 144e into which the protrusion 143a of the auxiliary yoke 143 is inserted is formed in a portion extending to the left of each side portion 144b. Further, projecting pieces 144f for preventing the vertical movement of the permanent magnet 141 are formed on the upper and lower ends of each side portion 144b.
[0026]
Here, the assembly procedure of the armature block 14 will be described. First, the corresponding shaft part 142c of the armature 142 is inserted into each hole 144d of the hinge spring 144, and then the tip side of each shaft part 142c is crimped. Thereby, the armature 142 and the hinge spring 144 are fastened. Thereafter, the permanent magnet 141 is sandwiched between the side portions 144b, and then the corresponding protrusions 143a of the auxiliary yoke 143 are inserted into the holes 144e of the hinge spring 144. Thereby, the armature block 14 in which the permanent magnet 141, the armature 142, and the auxiliary yoke 143 are integrally fixed by the hinge spring 144 is obtained.
[0027]
As shown in FIG. 2 (d), the card 15 is formed into a plate shape with resin or the like, and is connected to a hole 15a formed on the right end side for fitting the protruding piece 122a of the movable contact spring block 12. It has a hole 15b formed on the left end side for fitting the protrusion 142a of the pole 142 and a hole 15c extending in the left-right direction.
[0028]
As shown in FIG. 1, the container body 16 includes a resin body 161 and a cover 162. The body 161 is for housing and fixing the fixed contact spring block 11 and the movable contact spring block 12, and includes partition walls 161 a to 161 e protruding forward from the right side portion, and each protrusion 143 b of the auxiliary yoke 143. The groove 161f to be inserted (see FIG. 5B), the groove 161g into which the lower end side of each end 131a of the yoke 131 is inserted (see FIG. 5B), and inserted into the hole 15c of the card 15. A pair of holes (not shown) through which a protrusion (not shown) protruding from the upper surface of the partition wall 161e and a pair of coil terminals 134 of the electromagnet block 13 are inserted to restrict the movement of the card 15 in the left-right direction. Not shown). Here, the groove 161f and the groove 161g for insertion are provided, and each is formed in a shape corresponding to the outer shape of the insertion portion of the protrusion 143b and the end portion 131a, for example, so that the arrangement relationship between the electromagnet block 13 and the armature block 14 Can be managed with a predetermined accuracy. On the other hand, the cover 162 is formed in a box shape that closes the front side of the body 161.
[0029]
Next, an example of an assembly procedure of the electromagnetic relay configured as described above will be described. First, the fixed contact spring block 11 and the movable contact spring block 12 are housed and fixed at predetermined positions of the body 161. At this time, it is desirable to further use an adhesive.
[0030]
Thereafter, each projection 143b of the armature block 14 is fitted into the corresponding groove 161f of the body 161, and the armature block 14 is fixed to the body 161. At this time, it is desirable to further use an adhesive.
[0031]
Thereafter, each coil terminal 134 of the electromagnet block 13 is inserted into a corresponding hole of the body 161, and then the lower end side of each end portion 131a of the yoke 131 is fitted into the corresponding groove 161g. The body 161 is fixed. At this time, it is desirable to further use an adhesive.
[0032]
Thereafter, the projecting piece 122a of the movable contact spring block 12 and the projecting portion 142a of the armature 142 are inserted into the holes 15a and 15b of the card 15, respectively. Subsequently, when the body 161 is covered and fixed, the electromagnetic relay can be obtained.
[0033]
In this electromagnetic relay assembled in this way, as shown in FIG. 4A, the position of the armature 142 is at two points, that is, the protrusion 142b and the magnetic pole position (B in the example of FIG. 4A). As a result, unnecessary gaps do not occur and magnetic gaps do not occur. Thereby, the fluctuation | variation of a magnetic characteristic becomes small and impact resistance improves. Moreover, sensitivity adjustment becomes easy.
[0034]
Further, in addition to the armature block 14 having an integral structure, the auxiliary yoke 143 is provided with a projection 143b for fixing the armature block 14 to the body 161 in addition to the function of a magnetic path for flowing magnetic flux. This facilitates assembly of the electromagnetic relay.
[0035]
In addition, in 1st Embodiment, in order to attach a hinge spring to an auxiliary yoke, it has the structure where a pair of protrusion 143a is provided in the auxiliary yoke 143, For example, it does not provide the protrusion 143a, but is provided in an auxiliary yoke. You may employ | adopt another structure for attaching a hinge spring. An example of this structure is shown in FIG. In FIG. 6, the auxiliary yoke 243 is formed in the same shape as the auxiliary yoke 143 except that the protrusion 143a is removed. On the other hand, the hinge spring 244 is formed in the same shape as the hinge spring 144 except that a locking projection 244g with the auxiliary yoke 243 is formed on the left side of each hole 144e.
[0036]
FIG. Is the first of the present invention 2 The figure which looked at the electromagnet block and armature block in the electromagnetic relay which concerns on embodiment from the front and the right 8 Is a figure 7 This figure shows the hinge spring from the front and right side. 2 The embodiment will be described. Figure 7 E in (a) indicates the center of rotation.
[0037]
This electromagnetic relay includes a fixed contact spring block 11, a movable contact spring block 12, an electromagnet block 13, a card 15 and a container 16 in the same manner as in the first embodiment, and as a difference from the first embodiment, an armature block. 44.
[0038]
This armature block 44 is 7 As shown, the permanent magnet 141 and the auxiliary yoke 143 are the same as those in the first embodiment, and the armature 442 and the hinge spring 444 are different from those in the first embodiment.
[0039]
The armature 442 is formed in a plate shape whose length in the vertical direction is longer than the length between both end portions 131a of the yoke 131, and has the protrusion 142a and the protrusion 142b as in the first embodiment. A pair of shaft portions 442c that are for rivet fastening and project from the upper and lower sides on the left surface are different from the first embodiment, and are arranged on the right side with respect to the permanent magnet 141.
[0040]
The hinge spring 444 integrally fixes the permanent magnet 141, the armature 442, and the auxiliary yoke 143, and is formed of a thin metal plate having elasticity. 8 As shown in FIG. 4, a central portion 444a formed in a cross shape extending in the front-rear and up-down direction and attached to the left surface of the armature 442, and extending from the front and rear ends of the central portion 444a to the left, And T-shaped side portions 444b attached to the surface. Further, a hole 444d into which the shaft portion 442c of the armature 442 is inserted is formed in each portion extending up and down of the central portion 444a. Each side portion 444b is formed with a hole 444e into which the protrusion 143a of the auxiliary yoke 143 is inserted. Furthermore, projecting pieces 444f for preventing the vertical movement of the permanent magnet 141 are formed on the upper and lower ends of each side portion 444b.
[0041]
Here, the assembly procedure of the armature block 44 will be described. First, the corresponding shaft portion 442c of the armature 442 is inserted into each hole 444d of the hinge spring 444, and then the tip side of each shaft portion 442c is crimped. Thereby, the armature 442 and the hinge spring 444 are fastened. Thereafter, the permanent magnet 141 is held between both side portions 444b, and then the corresponding protrusions 143a of the auxiliary yoke 143 are inserted into the holes 444e of the hinge spring 444. As a result, the armature block 44 in which the permanent magnet 141, the armature 442, and the auxiliary yoke 143 are integrally fixed by the hinge spring 444 is obtained.
[0042]
The electromagnetic relay configured as described above is assembled in the same procedure as in the first embodiment. Also in this electromagnetic relay, since the position of the armature 442 is determined by two points of the protrusion 142b and one of the magnetic pole positions, an unnecessary gap is not generated and a magnetic gap is not generated. Thereby, the fluctuation | variation of a magnetic characteristic becomes small and impact resistance improves. Moreover, sensitivity adjustment becomes easy.
[0043]
Furthermore, wear due to swinging in the armature block 44 can be suitably prevented. In the first embodiment, as shown in FIG. 4, the hinge spring 144 is twisted at the torsional portion D to create the rotational movement of the armature 142. The protrusion 142b of the armature 142 performs a sliding motion on the permanent magnet 141. For this reason, the friction between the protrusion 142b of the armature 142 and the permanent magnet 141 increases, and both of them easily wear. On the other hand, 2 In the embodiment, figure 7 As shown in FIG. 4, since there is almost no deviation in the height direction between the rotation center E of the armature 442 and the protrusion 142b of the armature 442, the protrusion 142b of the armature 442 rolls on the hinge spring 444 or the permanent magnet 141. I do. As a result, the frictional force generated between the projection 142b of the armature 442 and the hinge spring 444 or the permanent magnet 141 is reduced, and wear thereof can be prevented.
[0044]
【The invention's effect】
As is clear from the above, according to the first aspect of the present invention, a yoke having both ends bent in one direction and a central portion between both ends of the yoke are wound. Coil portion, a permanent magnet disposed between both ends of the yoke, and a length longer than the length between both ends of the yoke, and disposed on the one direction side with respect to the permanent magnet. And a hinge spring for integrally fixing the permanent magnet and the armature so that both end sides of the armature can swing with respect to both ends of the yoke. Protrusions are provided between the poles The auxiliary yoke is formed in the shape of a plate having the same length as the length between both ends of the yoke, and is arranged on the opposite side to the one direction with respect to the permanent magnet. The permanent magnet is formed in a plate shape shorter than the length between both end portions of the yoke, the armature is formed in a plate shape, has the protrusion on the surface facing the permanent magnet, and the hinge spring Is attached to both sides of the auxiliary yoke extending from the central portion in a direction opposite to the one direction, and being attached to the surface on the one direction side of the armature. In addition, the permanent magnet, the armature and the auxiliary yoke are integrally fixed by the hinge spring. Therefore, fluctuations in magnetic properties are reduced and impact resistance is improved. Moreover, sensitivity adjustment becomes easy.
[0045]
Claim 2 According to the described invention, A yoke having both end portions bent in one direction, a coil portion wound around a central portion between both end portions of the yoke, and a permanent magnet disposed between both end portions of the yoke An armature formed longer than the length between both ends of the yoke, and disposed on the one direction side with respect to the permanent magnet, and the armature with respect to both ends of the yoke, respectively. A hinge spring for integrally fixing the permanent magnet and the armature so that both end sides are swingable, and a protrusion is provided between the permanent magnet and the armature; It is formed in a plate shape having a length similar to the length between both end portions of the yoke, and includes an auxiliary yoke arranged on the opposite side to the one direction with respect to the permanent magnet, The permanent magnet is formed in a plate shape shorter than the length between both end portions of the yoke, the armature is formed in a plate shape, has the protrusion on the surface facing the permanent magnet, and the hinge spring is A central portion attached to a surface of the armature opposite to the one direction and extending from the central portion in the reverse direction and attached to both side surfaces of the auxiliary yoke. The permanent magnet, the armature and the auxiliary yoke are integrally fixed by the hinge spring, so that fluctuations in magnetic properties are reduced and impact resistance is reduced. improves. Moreover, sensitivity adjustment becomes easy. Furthermore, it is possible to suitably prevent wear due to rocking in the armature block in which the permanent magnet, armature and auxiliary yoke are integrally fixed by a hinge spring.
[0046]
Claim 3 According to the described invention, the claims 1 Or 2 In the described electromagnetic relay, a body composed of a body and a cover is provided, and the auxiliary yoke has a fixing portion with the body, so that assembly is facilitated.
[0047]
Claim 4 According to the described invention, the claims 3 In the electromagnetic relay described above, the fixing portion is a plurality of protrusions, and the body is formed with grooves into which the protrusions are inserted. Therefore, assembly is facilitated.
[0048]
Claim 5 According to the described invention, 4 In the electromagnetic relay according to any one of the above, a fixed contact spring block including a fixed terminal, a plate spring fastened to the fixed terminal, and a fixed contact provided on the plate spring, a movable terminal, and the movable terminal A fixed spring is attached to both the armature and the movable contact spring block, and the fixed contact according to the swing of the armature. And a card for performing contact and separation of the movable contact, variation in magnetic characteristics is reduced, and impact resistance is improved. Moreover, sensitivity adjustment becomes easy.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view of an electromagnetic relay according to a first embodiment of the present invention.
FIGS. 2A to 2D are perspective views of a fixed contact spring block, a movable contact spring block, a yoke, and a card shown in FIG. 1, respectively.
3A and 3B are assembly and exploded perspective views of the armature block shown in FIG. 1, respectively.
4A and 4B are views of the electromagnet block and the armature block shown in FIG. 1 as viewed from the front and the right, respectively.
5A and 5B are a partial front view and a cross-sectional view taken along line AA in FIG. 1, respectively.
FIG. 6 is a view showing another structural example for attaching a hinge spring to the auxiliary yoke.
7A and 7B are views of an electromagnet block and an armature block in an electromagnetic relay according to a second embodiment of the present invention as viewed from the front and the right, respectively.
[Figure 8] (a) and (b) are respectively The figure which looked at the hinge spring of FIG. 8 from the front and right side It is.
FIG. 9 Partially cutaway perspective view showing a conventional electromagnetic relay It is.
FIG. 10 Plan view of the armature block shown in FIG. It is.
FIG. 11 9 Shown in Electromagnetic block and It is a top view of an armature block.
FIG. 12 9 Shown in Illustration of electromagnetic relay malfunction It is.
[Explanation of symbols]
11 Fixed contact spring block
12 Movable contact spring block
13 Electromagnet block
14, 34, 44 Armature block
15 cards
16 body

Claims

A yoke having both end portions bent in one direction, a coil portion wound around a central portion between both end portions of the yoke, and a permanent magnet disposed between both end portions of the yoke An armature formed longer than the length between both ends of the yoke, and disposed on the one direction side with respect to the permanent magnet, and the armature with respect to both ends of the yoke, respectively. And a hinge spring for integrally fixing the permanent magnet and the armature so that both end sides are swingable, a protrusion is provided between the permanent magnet and the armature, and between the both ends of the yoke The auxiliary magnet is formed in a plate shape having a length similar to the length, and is disposed on the opposite side to the one direction with respect to the permanent magnet, and the permanent magnet has both ends of the yoke. The armature is formed in a plate shape shorter than the length between the parts, and the armature is formed in a plate shape and is paired with the permanent magnet. The protrusion has a surface, and the hinge spring is attached to the surface on the one direction side of the armature, and extends from the central portion in a direction opposite to the one direction. An electromagnetic relay which is attached to both side surfaces of the yoke and has a shape having both sides sandwiching the permanent magnet, and the permanent magnet, the armature and the auxiliary yoke are integrally fixed by the hinge spring .

A yoke having both end portions bent in one direction, a coil portion wound around a central portion between both end portions of the yoke, and a permanent magnet disposed between both end portions of the yoke An armature formed longer than the length between both ends of the yoke, and disposed on the one direction side with respect to the permanent magnet, and the armature with respect to both ends of the yoke, respectively. And a hinge spring for integrally fixing the permanent magnet and the armature so that both end sides are swingable, a protrusion is provided between the permanent magnet and the armature, and between the both ends of the yoke The auxiliary magnet is formed in a plate shape having a length similar to the length, and is disposed on the opposite side to the one direction with respect to the permanent magnet, and the permanent magnet has both ends of the yoke. The armature is formed in a plate shape shorter than the length between the parts, and the armature is formed in a plate shape and is paired with the permanent magnet. Having said projection on a surface, said hinge spring includes a central portion which is attached to the surface of the side of said one direction and opposite in the armature, the auxiliary extending from the central portion toward the opposite wherein while being attached on both sides of the yoke is formed into a shape having both side portions that sandwich the permanent magnet, the permanent magnet, the armature and the auxiliary yoke are conductive magnetic relay which is secured together by the hinge spring .

3. The electromagnetic relay according to claim 1 , further comprising a body made of a body and a cover, wherein the auxiliary yoke has a fixing portion to the body .

The electromagnetic relay according to claim 3, wherein the fixing portion is a plurality of protrusions, and a groove into which the protrusions are inserted is formed in the body .

A stationary contact, a leaf spring fastened to the stationary terminal, a stationary contact spring block comprising a stationary contact provided on the leaf spring, a movable terminal, a leaf spring fastened to the movable terminal, and the leaf A movable contact spring block formed of a movable contact provided on a spring, and attached to both the armature and the movable contact spring block, for contacting and separating the fixed contact and the movable contact according to the swing of the armature. electromagnetic relay according to any one of claims 1 to 4 having a card.