JP3959894B2

JP3959894B2 - Electromagnetic relay

Info

Publication number: JP3959894B2
Application number: JP18694499A
Authority: JP
Inventors: 佐藤　　敦司
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1999-06-30
Filing date: 1999-06-30
Publication date: 2007-08-15
Anticipated expiration: 2019-06-30
Also published as: JP2001014995A

Description

【０００１】
【発明の属する技術分野】
本発明は、電磁継電器に関するものである。
【０００２】
【従来の技術】
従来の電磁継電器の断面図を図１０（ａ）に、一部省略せる分解斜視図を図１１にそれぞれ示す。電磁継電器の器体１は、上面が開口した略箱状のケース２と、ケース２の開口を塞ぐようにして、ケース２に取り付けられるベース３とで構成され、ケース２及びベース３はそれぞれ絶縁性を有する合成樹脂から形成されている。
【０００３】
ベース３は、ケース２の開口を塞ぐ略矩形状の蓋板４の３辺から背板５、側壁６，７が夫々垂下され、略箱状に形成されており、蓋板４、背板５及び側壁６，７によって囲まれ、前面及び下面に開口した凹所３ａが形成されている。ベース３の背板５からは略コ字状の絶縁壁８が前面側に向かって立設されており、ベース３の中央を上下に分割している。また、両側壁６，７における絶縁壁８と蓋板４との間の部位からは、ベース３の中程まで伸びる隔壁９，１０がそれぞれ突設されている。尚、図１０（ａ）中左側の側壁６に突設された隔壁９は、同図中右側の側壁７に突設された隔壁１０よりも同図中上側に設けられている。
【０００４】
ベース３の凹所３ａには、固定接点１１が設けられた固定側端子板１２と、固定接点１１と接離自在に接触する可動接点１３が設けられた可動側端子板１４とが夫々圧入固定されており、通電に応じて両接点１１，１３を開閉させる電磁石ブロック１６が収納されている。
【０００５】
固定側端子板１２は、略短冊状の中央片１２ａと、中央片１２ａの一端縁から中央片１２ａと略直交する方向に突出するタブ端子１２ｂと、中央片１２ａの他端縁からタブ端子１２ｂと反対方向に突出する基板用端子１２ｃとが連続一体に設けられて、略Ｚ字状に形成されており、中央片１２ａにおける基板用端子１２ｃが突出する側の面に固定接点１１が固着されている。一方、可動側端子板１４は、略短冊状の中央片１４ａと、中央片１４ａの一端縁から中央片１４ａと略直交する方向に突出するタブ端子１４ｂと、中央片１４ａの他端縁からタブ端子１４ｂと反対方向に突出する基板用端子１４ｃとが連続一体に設けられ、略Ｚ字状に形成されており、中央片１４ａには可動接点１３が固着された可撓性を有する可動ばね片１５が可動接点１３を固定接点１１と対向させてかしめ固定されている。
【０００６】
ここに、ベース３の蓋板４には前面側に開放された一対の圧入溝４ａ，４ｂが形成され、側壁６，７にはそれぞれ前面側に開放された圧入溝６ａ，７ａが形成されている。固定側端子板１２は、タブ端子１２ｂの基部を圧入溝４ａに、中央片１２ａにおける基板用端子１２ｃの連結部付近を圧入溝７ａにそれぞれ圧入して、ベース３に圧入固定される。また、可動側端子板１４は、タブ端子１４ｂの基部を圧入溝４ｂに、中央片１４ａにおける基板用端子１２ｃの連結部付近を圧入溝６ａにそれぞれ圧入して、ベース３に圧入固定される。
【０００７】
電磁石ブロック１６は、略円筒状であって両端に鍔部１７ａ，１７ａが設けられたコイルボビン１７と、コイルボビン１７における両鍔部１７ａ，１７ａの間の部位に巻回されたコイル１８と、略円柱状であって一端部に大径の磁極部１９ａが設けられコイルボビン１７の筒内に挿着された鉄心１９と、磁性材料から略Ｌ字状に形成されコイル１８の一端面及び側面を覆い、一側片２０ａが鉄心１９の他端部に固着された継鉄２０と、略Ｌ字状であって両側片２２ａ，２２ｂの折曲部の内側がヒンジばね２１により継鉄２０の他側片２０ｂの先端部を支点として回動自在に支持され、コイル１８への通電に応じて一側片２２ａが鉄心１９の磁極部１９ａに吸引又は釈放される接極子２２とで構成される。
【０００８】
上述のように接極子２２はコイル１８への通電に応じて揺動するのであるが、ベース３には接極子２２の動きを可動ばね片１５に伝達するためのカード２３が取り付けられている。カード２３は絶縁性を有する合成樹脂から形成され、略平板状であって、接極子２２の側片２２ｂと可動ばね片１５との間に側片２２ｂに対して略平行に取り付けられている。そして、カード２３における側片２２ｂと対向する面には、側片２２ｂに穿設された一対の係合孔２２ｃ，２２ｃとそれぞれ係合する係合突起２４，２４が突設され、カード２３における可動ばね片１５と対向する面には、可動ばね片１５を押圧する突台部２５が設けられ、突台部２５の先端面に可動ばね片１５に穿設された係合孔１５ｄと係合する係合突起２６が突設されている。
【０００９】
この電磁継電器を組み立てる際は、先ず固定側端子板１２及び可動側端子板１４がそれぞれ圧入固定されたベース３の前面側から、凹所３ａ内に電磁石ブロック１６を挿入して、電磁石ブロック１６をベース３に取り付ける。その後、可動ばね片１５の先端を固定接点１１側に撓ませた状態で、カード２３をベース３の前面側から接極子２２の側片２２ｂと可動ばね片１５との間に挿入し、カード２３の係合突起２４，２６をそれぞれ側片２２ｂの係合孔２２ｃ、可動ばね片１５の係合孔１５ｄに係合させて、側片２２ｂと可動ばね片１５との間にカード２３を保持させる。
【００１０】
【発明が解決しようとする課題】
上記構成の電磁継電器では、ベース３の凹所３ａ内に両端子板１２，１４及び電磁石ブロック１６を取り付けた後、接極子２２の側片２２ｂと可動ばね片１５との間にカード２３を挿入している。そのため、カード２３を挿入する際、図１０（ｂ）に示すように、カード２３が取り付けられた状態での可動ばね片１５の位置（図１０（ａ）参照）から、カード２３の両面にそれぞれ突設された突起２４，２６の高さ分だけ可動ばね片１５を蓋板４側に撓ませる必要があった。また、カード２３を挿入する際に、接極子２２の側片２２ｂ及び可動ばね片１５にそれぞれ穿設された係合孔２２ｃ，１５ｄの位置が分かりにくく、カード２３の組立作業性が悪いという問題があった。
【００１１】
本発明は上記問題点に鑑みて為されたものであり、その目的とするところは、組立作業性を向上させた電磁継電器を提供することにある。
【００１２】
【課題を解決するための手段】
上記目的を達成するために、請求項１の発明では、コイル、コイルの中心に挿入された磁性材料からなる芯部、一端が芯部の一側に結合された磁性材料からなる継鉄、及び、磁性材料から形成され継鉄の他端に揺動自在に取り付けられコイルへの通電に応じて芯部の他側に吸着される接極子を有する電磁石ブロックと、固定接点が設けられた固定接点板と、固定接点に接離自在に接触する可動接点が設けられた可撓性を有する可動接点板と、一側に開放された凹所を有し該凹所内に両接点板及び電磁石ブロックが並設されたベースと、凹所の開口側から可動接点板と接極子との間に挿入されて可動接点板と接極子との間に取り付けられ、接極子の動きを可動接点板に伝達する駆動部材とを備え、接極子と対向する駆動部材の部位に、接極子に設けられた被係止部と凹凸係止する係止部を設け、駆動部材と対向する可動接点板の部位に、凹所の開口側から挿入される駆動部材の両側に位置して、駆動部材の端部を間に保持する一対の保持片を可動接点板の一部を切り起こすことにより形成したことを特徴とし、凹所内に取り付けられた可動接点板と接極子との間に駆動部材を取り付ける際に、駆動部材に設けた係止部や接極子に設けた被係止部が接極子や駆動部材に干渉しないよう、可動接点板を固定接点板側に撓ませる必要があるが、駆動部材と対向する可動接点板の部位には一対の保持片が切り起こしにより形成されており、一対の保持片の間に駆動部材の端部が保持されているので、可動接点板に設けられた被係止部と凹凸係止する係止部を駆動部材に設けた場合に比べて、可動接点板を撓ませる量が小さくなり、組立作業を容易に行うことができる。しかも、一対の保持片の間に駆動部材を挿入すると、駆動部材は保持片によってガイドされ、駆動部材の係止部と接極子の被係止部とが凹凸係止するので、駆動部材の挿入位置を容易に見つけることができ、組立作業の作業性が向上する。
【００１３】
請求項２の発明では、請求項１の発明において、上記一対の保持片の先端部の間隔を、付け根付近の間隔に比べて広げたことを特徴とし、一対の保持片の間隔は先端部が付け根付近に比べて広がっているので、可動接点板と接極子との間に駆動部材を挿入する際に、可動接点板側の駆動部材の端部が保持片の間に誘い込まれるため、駆動部材の組立作業を容易に行うことができる。
【００１４】
請求項３の発明では、請求項１の発明において、上記凹所の底面側と対向する接極子の部位を覆う覆い部を駆動部材に設けたことを特徴とし、駆動部材を接極子上に載置すると、駆動部材の覆い部は凹所の底面側の接極子の部位を覆っており、凹所内に最初に挿入される接極子の部位と係止しているので、駆動部材を接極子上に載置した状態で駆動部材と電磁石ブロックとを一度にベースに組み込むことができ、組立の手間を減らすことができる。
【００１５】
請求項４の発明では、請求項１の発明において、上記凹所の底面側及び開口側と対向する接極子の部位を夫々覆う覆い部を駆動部材に設けたことを特徴とし、駆動部材の覆い部は、凹所の底面側及び開口側の接極子の部位をそれぞれ覆っているので、駆動部材を接極子上に載置した状態が安定し、駆動部材と電磁石ブロックの組込作業を容易に行える。
【００１６】
請求項５の発明では、請求項１の発明において、可動接点板と対向する接極子の部位を覆う絶縁壁を駆動部材に設けたことを特徴とし、絶縁壁によって可動接点板と対向する接極子の部位が覆われているので、接極子と可動接点板との間の絶縁性能を向上させることができる。
【００１７】
請求項６の発明では、請求項１の発明において、一面開口した略箱状であって、内部にベースを収納するケースを備え、ケースの内側面に形成された嵌合溝と凹凸嵌合する嵌合突起をベースに設けたことを特徴とし、嵌合溝と嵌合突起とを嵌合させることにより、ベースとケースとを別部材を必要とすることなく、容易に結合することができる。
【００１８】
請求項７の発明では、請求項１の発明において、上記各接点板が圧入固定される圧入溝をベースに設けたことを特徴とし、各接点板を圧入溝に圧入することにより、各接点板を容易にベースに固定することができる。
【００１９】
【発明の実施の形態】
（実施形態１）
本実施形態の電磁継電器を図１乃至図６を参照して説明する。この電磁継電器の器体１は、上面が開口した略箱状のケース２と、ケース２の開口２ａを塞ぐようにして、ケース２に取り付けられるベース３とで構成され、ケース２及びベース３はそれぞれ絶縁性を有する合成樹脂から形成されている。
【００２０】
ベース３は、図４に示すように、ケース２の開口を塞ぐ略矩形状の蓋板４の３辺から背板５、側壁６，７が夫々垂下され、略箱状に形成されており、蓋板４、背板５及び側壁６，７によって囲まれ、前面及び下面に開口した凹所３ａが形成されている。ベース３の背板５からは略コ字状の絶縁壁８が前面側に向かって立設されており、ベース３の中央を上下に分割している。また、両側壁６，７における絶縁壁８と蓋板４との間の部位からは、ベース３の中程まで伸びる隔壁９，１０がそれぞれ突設されている。尚、図１中左側の側壁６に突設された隔壁９は、同図中右側の側壁７に突設された隔壁１０よりも同図中上側に設けられている。
【００２１】
ベース３の凹所３ａには、導電材料から形成され固定接点１１が設けられた固定側端子板（固定接点板）１２と、導電材料から形成され固定接点１１と接離自在に接触する可動接点１３が設けられた可動側端子板１４とが圧入固定されており、通電に応じて両接点１１，１３を開閉させる電磁石ブロック１６が収納されている。
【００２２】
固定側端子板１２は、略短冊状の中央片１２ａと、中央片１２ａの一端縁から中央片１２ａと略直交する方向に突出するタブ端子１２ｂと、中央片１２ａの他端縁からタブ端子１２ｂと反対方向に突出する基板用端子１２ｃとが連続一体に形成され、略Ｚ字状に形成されており、中央片１２ａにおける基板用端子１２ｃが突出する側の面に固定接点１１が固着されている。
【００２３】
一方、可動側端子板１４は、図３（ａ）（ｂ）及び図４に示すように、略短冊状の中央片１４ａと、中央片１４ａの一端縁から中央片１４ａと略直交する方向に突出するタブ端子１４ｂと、中央片１４ａの他端縁からタブ端子１４ｂと反対方向に突出する基板用端子１４ｃとが連続一体に形成され、略Ｚ字状に形成されており、中央片１４ａの下面には凸部１４ｄが一対突設されている。可動接点１３は、導電性を有する略短冊状の板片を折曲して略Ｚ字状に形成された可撓性を有する可動ばね片１５の一端部に固着されている。可動ばね片１５の他端部には一対のかしめ孔１５ｂが穿設されており、可動接点１３を上側に向けた状態で、可動側端子板１４の中央片１４ａに突設された凸部１４ｄをかしめ孔１５ｂに挿入し、凸部１４ｄの頭をつぶすことによって可動ばね片１５は可動側端子板１４にかしめ固定される。ここに、可動側端子板１４及び可動ばね片１５から可動接点板が構成される。
【００２４】
ここに、ベース３の蓋板４には前面側に開放された一対の圧入溝４ａ，４ｂが形成され、側壁６，７にはそれぞれ前面側に開放された圧入溝６ａ，７ａが形成されており、固定側端子板１２は、タブ端子１２ｂの基部を圧入溝４ａに、中央片１２ａにおける基板用端子１２ｃの連結部付近を圧入溝７ａにそれぞれ圧入して、ベース３に圧入固定される。また、可動側端子板１４は、タブ端子１４ｂの基部を圧入溝４ｂに、中央片１４ａにおける基板用端子１２ｃの連結部付近を圧入溝６ａにそれぞれ圧入して、ベース３に圧入固定される。このように、両端子板１２，１４は圧入によりベース３に固定されるので、別部材を必要とすることなく、両端子板１２，１４を容易に取り付けることができる。
【００２５】
電磁石ブロック１６は、図５に示すように、略円筒状であって両端に鍔部１７ａ，１７ａが設けられたコイルボビン１７と、導電材料から形成されコイルボビン１７の両鍔部１７ａにそれぞれ圧入固定されたコイル端子２７，２７と、コイルボビン１７における両鍔部１７ａ，１７ａの間の部位に巻回され、両端がコイル端子２７に突設された巻き付け片２７ａにそれぞれ巻き付けられたコイル１８と、略円柱状であって一端部に大径の磁極部１９ａが設けられコイルボビン１７の筒内に挿着された鉄心（芯部）１９と、磁性材料から略Ｌ字状に形成されコイル１８の一端面及び側面を覆い、一側片２０ａに設けた孔２０ｃに鉄心１９の他端部が固着された継鉄２０と、継鉄２０の他側片２０ｂに突設されたかしめ突起２０ｄが孔２１ａ内に挿入され、かしめ突起２０ｄの頭をつぶすことにより他側片２０ｂにかしめ固定されるヒンジばね２１と、磁性材料から略Ｌ字状に形成され両側片２２ａ，２２ｂの折曲部の内側がヒンジばね２１により継鉄２０の他側片２０ｂの先端部を支点として回動自在に支持され、一側片２２ａがコイル１８への通電に応じて鉄心１９の磁極部１９ａに吸引又は釈放される接極子２２とで構成される。
【００２６】
上述のように接極子２２はコイル１８への通電に応じて揺動するのであるが、ベース３には接極子２２の動きを可動ばね片１５に伝達するためのカード（駆動部材）２３が取り付けられている。カード２３は絶縁性を有する合成樹脂から形成され、略平板状であって、接極子２２の側片２２ｂと可動ばね片１５との間に側片２２ｂに対して略平行に取り付けられている。そして、カード２３における側片２２ｂと対向する面には、側片２２ｂに穿設された一対の係合孔２２ｃとそれぞれ係合する係合突起２４，２４が突設され、カード２３における可動ばね片１５と対向する面には、先端面が可動ばね片１５と当接する突台部２５が設けられている。一方、可動ばね片１５におけるカード２３の突台部２５と当接する当接部１５ｃを挟んで両側の部位には、可動ばね片１５の一部を切り起こすことにより、突台部２５を間に保持する一対のガイド片（保持片）１５ａが形成されており、一対のガイド片１５ａの間に突台部２５が保持される。尚、図１及び図２に示す電磁石ブロック１６では、カード２３と対向する接極子２２の側片２２ｂに、カード２３に突設された係合突起２４と係合する孔２２ｃを穿設しているが、図５に示すように、カード２３の係合突起２４と係合する係合溝２２ｄを接極子２２の側片２２ｂに設けても良い。
【００２７】
この電磁継電器を組み立てる手順について図２を参照して簡単に説明する。先ず、固定側端子板１２及び可動側端子板１４がそれぞれ圧入固定されたベース３の前面側から凹所３ａ内に電磁石ブロック１６を挿入して、電磁石ブロック１６をベース３に取り付ける。この時、ベース３の絶縁壁８の両側片８ａ，８ａが、コイルボビン１７の両鍔部１７ａ，１７ａに形成された溝１７ｂ，１７ｂと係合し、継鉄２０の側片２０ｂとコイル１８との間に絶縁壁８が介在するので、鉄心１９、継鉄２０及び接極子２２とコイル１８とが絶縁される。
【００２８】
次に、可動ばね片１５の先端を固定接点１１側に撓ませた状態で、カード２３をベース３の前面側から接極子２２の側片２２ｂと可動ばね片１５との間に挿入し、カード２３の係合突起２４，２４を側片２２ｂの係合孔２２ｃ，２２ｃと係合させ、側片２２ｂと可動ばね片１５との間にカード２３を保持させる。ここで、可動ばね片１５に設けられたガイド片１５ａ，１５ａの間にカード２３の突台部２５を挿入すると、カード２３はガイド片１５ａ，１５ａによってガイドされ、カード２３の係合突起２４，２４と側片２２ｂの係合孔２２ｃ，２２ｃとが係合するので、カード２３を挿入する位置を容易に確認することができ、組立作業の作業性が向上する。また、ガイド片１５ａ，１５ａの先端部の間隔は、付け根付近の間隔に比べて広くなっており、断面ハ字状に配置されているので、カード２３の挿入時にカード２３の突台部２５がガイド片１５ａの間に誘い込まれるためカード２３の組立作業を容易に行える。
【００２９】
しかも、可動ばね片１５のガイド片１５ａ，１５ａでカード２３の突台部２５を保持しているので、従来の電磁継電器のように突台部２５に係合突起を設ける必要が無く、突台部２５の先端面と可動ばね片１５とが当接しているから、カード２３の挿入時に、カード２３の接極子２２側の面に突設された係合突起２４の高さ分だけ可動ばね片１５を撓ませれば良く、従来の電磁継電器に比べて可動ばね片１５を撓ませる量が少なくなる。したがって、可動ばね片１５を撓ませる力が少なくて済み、カード２３の組立作業を容易に行える。
【００３０】
最後に、ベース３をケース２の開口２ａからケース２内部に挿入すると、ベース３の側壁６，７に突設された嵌合突起６ｂ，７ｂが、ケース２の内側面に形成された嵌合溝２ｂ，２ｂと凹凸嵌合して、ケース２とベース３とが結合される。このように、嵌合突起６ｂ，７ｂと嵌合溝２ｂ，２ｂとを凹凸嵌合させることにより、別部材を必要とすることなく、ケース２とベース３とを容易に結合することができる。この時、基板用端子１２ｃ，１４ｃ及びコイル端子２７，２７はケース２の底面に穿設された挿通孔（図示せず）からケース２の外部に突出する。
【００３１】
この電磁継電器では、基板用端子１２ｃ，１４ｃがコイル端子２７，２７と共にプリント基板に半田付けされるとともに、タブ端子１２ｂ，１４ｂにリード線が結線されたレセプタクル端子が接続される。そして、コイル端子２７，２７間に電圧が印加され、コイル１８に電流が流れると、接極子２２の側片２２ａが鉄心１９の磁極部１９ａに吸引され、接極子２２が継鉄２０の側片２０ｂの先端部を支点として図１中反時計回りに回動する。この時、接極子２２の回動に応じてカード２３は図中上方に移動し、可動ばね片１５を固定接点１１側に撓ませて、可動接点１３と固定接点１１とを接触させる。その後、コイル１８への通電を停止すると、接極子２２の側片２２ａを吸引する力がなくなり、可動ばね片１５及びヒンジばね２１のばね復帰力によって、接極子２２が図１中時計回りに回動し、可動接点１３と固定接点１１とが解離する。
【００３２】
（実施形態２）
本実施形態の電磁継電器を図７乃至図９を参照して説明する。本実施形態では、実施形態１の電磁継電器において、カード２３におけるベース３の背板５と対向する側縁、及び、その反対側の側縁から、接極子２２の側片２２ｂにおける凹所３ａの底面側及び開口側をそれぞれ覆う覆い部２８を垂下すると共に、カード２３におけるベース３の側壁７側の側縁から側片２２ｂの先端面を覆う覆い部（絶縁壁）２９を垂下しており、さらに覆い部２９の下縁からは側壁７側に突出する舌片２９ａを突設している。尚、カード２３以外の構成は実施形態１の電磁継電器と同様であるので、実施形態１の電磁継電器と同一の構成要素には同一の符号を付して、その説明を省略する。
【００３３】
この電磁継電器を組み立てる手順について簡単に説明する。先ず、実施形態１と同様にして、ベース３の凹所３ａ内に固定側端子板１２及び可動側端子板１４を圧入固定する。次に図８（ａ）に示すように、接極子２２の側片２２ｂ上にカード２３を載置すると、カード２３の覆い部２８，２９が側片２２ｂの両側面及び先端面を覆うと共に、カード２３の係合突起２４と側片２２ｂの係合溝２２ｄとが係合して、カード２３の覆い部２８，２９で囲まれる空間内に接極子２２の側片２２ｂが保持され、電磁石ブロック１６上にカード２３が取り付けられる。
【００３４】
その後、図８（ｂ）に示すように、両端子板１２，１４が圧入固定されたベース３の前面側から、接極子２２上にカード２３を載置した電磁石ブロック１６を挿入すると、カード２３の突台部２５が可動ばね片１５のガイド片１５ａ，１５ａの間に挿入される。尚、突台部２５における凹所３ａの底面側（背板５側）の部位にはテーパ面２５ａが形成されているので、このテーパ面２５ａを利用してカード２３を容易に挿入することができる。
【００３５】
本実施形態では、接極子２２の側片２２ｂにおける凹所３ａの底面側及び開口側の部位をそれぞれ覆う覆い部２８，２８をカード２３に設けており、覆い部２８は凹所３ａ内に最初に挿入される側片２２ｂの部位と係止しているので、カード２３を接極子２２上に載置した状態で、カード２３と電磁石ブロック１６とを一度にベース３に組み込むことができる。このように、本実施形態では電磁石ブロック１６とカード２３とを一度にベース３に組み込んでいるので、電磁石ブロック１６とカード２３とを別々にベース３に組み込む場合に比べて組立作業を簡素化でき、作業性を向上させることができる。尚、本実施形態ではカード２３の両側縁から覆い部２８，２８を垂下しており、覆い部２８，２８が側片２２ｂの両側面を覆っているので、カード２３を組み込む際に接極子２２上でのカード２３の位置が安定するが、接極子２２の側片２２ｂにおける凹所３ａの底面側の部位を覆う覆い部２８のみをカード２３に設けるようにしても良い。
【００３６】
また、カード２３における側壁７と対向する側縁からは側片２２ｂの先端面を覆う覆い部２９が垂下され、覆い部２９の下縁からは側壁７側に突出する舌片２９ａが突設されているので、覆い部２９及び舌片２９ａにより、可動ばね片１１と対向する側片２２ｂの部位を覆っているので、可動ばね片１５（すなわち可動接点１１）と接極子２２（すなわちコイル１８）との間の絶縁距離を確保し、絶縁性を向上させることができる。
【００３７】
【発明の効果】
上述のように、請求項１の発明は、コイル、コイルの中心に挿入された磁性材料からなる芯部、一端が芯部の一側に結合された磁性材料からなる継鉄、及び、磁性材料から形成され継鉄の他端に揺動自在に取り付けられコイルへの通電に応じて芯部の他側に吸着される接極子を有する電磁石ブロックと、固定接点が設けられた固定接点板と、固定接点に接離自在に接触する可動接点が設けられた可撓性を有する可動接点板と、一側に開放された凹所を有し該凹所内に両接点板及び電磁石ブロックが並設されたベースと、凹所の開口側から可動接点板と接極子との間に挿入されて可動接点板と接極子との間に取り付けられ、接極子の動きを可動接点板に伝達する駆動部材とを備え、接極子と対向する駆動部材の部位に、接極子に設けられた被係止部と凹凸係止する係止部を設け、駆動部材と対向する可動接点板の部位に、凹所の開口側から挿入される駆動部材の両側に位置して、駆動部材の端部を間に保持する一対の保持片を可動接点板の一部を切り起こすことにより形成したことを特徴とし、凹所内に取り付けられた可動接点板と接極子との間に駆動部材を取り付ける際に、駆動部材に設けた係止部や接極子に設けた被係止部が接極子や駆動部材に干渉しないよう、可動接点板を固定接点板側に撓ませる必要があるが、駆動部材と対向する可動接点板の部位には一対の保持片が切り起こしにより形成されており、一対の保持片の間に駆動部材の端部が保持されているので、可動接点板に設けられた被係止部と凹凸係止する係止部を駆動部材に設けた場合に比べて、可動接点板を撓ませる量が小さくなり、組立作業を容易に行えるという効果がある。しかも、一対の保持片の間に駆動部材を挿入すると、駆動部材は保持片によってガイドされ、駆動部材の係止部と接極子の被係止部とが凹凸係止するので、駆動部材の挿入位置を容易に見つけることができ、組立作業の作業性が向上するという効果がある。
【００３８】
請求項２の発明は、請求項１の発明において、上記一対の保持片の先端部の間隔を、付け根付近の間隔に比べて広げたことを特徴とし、一対の保持片の間隔は先端部が付け根付近に比べて広がっているので、可動接点板と接極子との間に駆動部材を挿入する際に、可動接点板側の駆動部材の端部が保持片の間に誘い込まれるため、駆動部材の組立作業を容易に行えるという効果がある。
【００３９】
請求項３の発明は、請求項１の発明において、上記凹所の底面側と対向する接極子の部位を覆う覆い部を駆動部材に設けたことを特徴とし、駆動部材を接極子上に載置すると、駆動部材の覆い部は凹所の底面側の接極子の部位を覆っており、凹所内に最初に挿入される接極子の部位と係止しているので、駆動部材を接極子上に載置した状態で駆動部材と電磁石ブロックとを一度にベースに組み込むことができ、組立の手間を減らすことができるという効果がある。
【００４０】
請求項４の発明は、請求項１の発明において、上記凹所の底面側及び開口側と対向する接極子の部位を夫々覆う覆い部を駆動部材に設けたことを特徴とし、駆動部材の覆い部は、凹所の底面側及び開口側の接極子の部位をそれぞれ覆っているので、駆動部材を接極子上に載置した状態が安定し、駆動部材と電磁石ブロックの組込作業を容易に行えるという効果がある。
【００４１】
請求項５の発明は、請求項１の発明において、可動接点板と対向する接極子の部位を覆う絶縁壁を駆動部材に設けたことを特徴とし、絶縁壁によって可動接点板と対向する接極子の部位が覆われているので、接極子と可動接点板との間の絶縁性能が向上するという効果がある。
【００４２】
請求項６の発明は、請求項１の発明において、一面開口した略箱状であって、内部にベースを収納するケースを備え、ケースの内側面に形成された嵌合溝と凹凸嵌合する嵌合突起をベースに設けたことを特徴とし、嵌合溝と嵌合突起とを嵌合させることにより、ベースとケースとを別部材を必要とすることなく、容易に結合することができるという効果がある。
【００４３】
請求項７の発明は、請求項１の発明において、上記各接点板が圧入固定される圧入溝をベースに設けたことを特徴とし、各接点板を圧入溝に圧入することにより、各接点板を容易にベースに固定することができるという効果がある。
【図面の簡単な説明】
【図１】実施形態１の電磁継電器の断面図である。
【図２】同上の一部省略せる分解斜視図である。
【図３】同上の可動側端子板を示し、（ａ）は正面図、（ｂ）は上面図である。
【図４】同上の一部省略せる分解斜視図である。
【図５】同上の電磁石ブロックを示す分解斜視図である。
【図６】同上のケースを示す斜視図である。
【図７】実施形態２の電磁継電器の断面図である。
【図８】（ａ）（ｂ）は同上の組立手順を説明する分解斜視図である。
【図９】同上のカードを示す斜視図である。
【図１０】従来の電磁継電器を示し、（ａ）はカードが組み込まれた状態の断面図、（ｂ）はカードを組み込む途中の状態を示す断面図である。
【図１１】同上の一部省略せる分解斜視図である。
【符号の説明】
３ベース
３ａ凹所
１１固定接点
１２固定接点板
１３可動接点
１４可動接点板
１５可動ばね片
１５ａガイド片
１６電磁石ブロック
２２接極子
２２ｃ係合孔
２３カード
２４係合突起
２５突台部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electromagnetic relay.
[0002]
[Prior art]
FIG. 10A shows a cross-sectional view of a conventional electromagnetic relay, and FIG. 11 shows an exploded perspective view that can be partially omitted. The body 1 of the electromagnetic relay is composed of a substantially box-shaped case 2 having an open upper surface and a base 3 attached to the case 2 so as to close the opening of the case 2, and the case 2 and the base 3 are insulated. It is formed from a synthetic resin having properties.
[0003]
The base 3 has a substantially box-like shape in which a back plate 5 and side walls 6 and 7 are respectively suspended from three sides of a substantially rectangular lid plate 4 that closes the opening of the case 2. And the recessed part 3a which was enclosed by the side walls 6 and 7 and opened to the front surface and the lower surface is formed. A substantially U-shaped insulating wall 8 is erected from the back plate 5 of the base 3 toward the front side, and the center of the base 3 is divided vertically. In addition, partition walls 9 and 10 extending to the middle of the base 3 project from the portions between the insulating walls 8 and the cover plate 4 on the side walls 6 and 7, respectively. 10A. The partition wall 9 protruding from the left side wall 6 in FIG. 10A is provided above the partition wall 10 protruding from the right side wall 7 in FIG.
[0004]
In the recess 3a of the base 3, a fixed side terminal plate 12 provided with a fixed contact 11 and a movable side terminal plate 14 provided with a movable contact 13 that comes into contact with and away from the fixed contact 11 are press-fitted and fixed. An electromagnet block 16 that opens and closes both contacts 11 and 13 in response to energization is housed.
[0005]
The fixed-side terminal plate 12 includes a substantially strip-shaped center piece 12a, a tab terminal 12b protruding from one end edge of the center piece 12a in a direction substantially orthogonal to the center piece 12a, and a tab terminal 12b extending from the other end edge of the center piece 12a. And the board terminal 12c projecting in the opposite direction are provided in a continuous and integrated manner, and are formed in a substantially Z shape. The fixed contact 11 is fixed to the surface of the center piece 12a on the side from which the board terminal 12c projects. ing. On the other hand, the movable side terminal plate 14 includes a substantially strip-shaped center piece 14a, a tab terminal 14b protruding from one end edge of the center piece 14a in a direction substantially perpendicular to the center piece 14a, and a tab from the other end edge of the center piece 14a. A terminal 14b and a board terminal 14c projecting in the opposite direction are provided continuously and formed in a substantially Z shape, and a flexible movable spring piece having a movable contact 13 fixed to the central piece 14a. 15 is fixed by caulking with the movable contact 13 facing the fixed contact 11.
[0006]
Here, the cover plate 4 of the base 3 is formed with a pair of press-fit grooves 4a and 4b opened to the front side, and the side walls 6 and 7 are formed with press-fit grooves 6a and 7a opened to the front side, respectively. Yes. The fixed-side terminal plate 12 is press-fitted and fixed to the base 3 by press-fitting the base portion of the tab terminal 12b into the press-fit groove 4a and the vicinity of the connection portion of the central piece 12a with the board terminal 12c into the press-fit groove 7a. The movable terminal plate 14 is press-fitted and fixed to the base 3 by pressing the base of the tab terminal 14b into the press-fit groove 4b and the vicinity of the connecting portion of the central piece 14a to the board terminal 12c into the press-fit groove 6a.
[0007]
The electromagnet block 16 is substantially cylindrical and has a coil bobbin 17 provided with flanges 17a and 17a at both ends, a coil 18 wound around a portion of the coil bobbin 17 between the flanges 17a and 17a, and a substantially circular shape. An iron core 19 that is columnar and has a large-diameter magnetic pole portion 19a at one end and is inserted into a cylinder of the coil bobbin 17, and is formed in a substantially L shape from a magnetic material and covers one end surface and side surfaces of the coil 18. The yoke 20 with one side piece 20a fixed to the other end of the iron core 19 and the other side piece of the yoke 20 are hinged by hinge springs 21 inside the bent portions of both side pieces 22a and 22b. The one end piece 22a is supported by the tip end portion 20b as a fulcrum and is constituted by an armature 22 that is attracted or released to the magnetic pole portion 19a of the iron core 19 in response to energization of the coil 18.
[0008]
As described above, the armature 22 swings in response to the energization of the coil 18, but the card 3 for transmitting the movement of the armature 22 to the movable spring piece 15 is attached to the base 3. The card 23 is made of an insulating synthetic resin, has a substantially flat plate shape, and is attached between the side piece 22 b of the armature 22 and the movable spring piece 15 so as to be substantially parallel to the side piece 22 b. Then, on the surface of the card 23 facing the side piece 22b, engagement protrusions 24, 24 that respectively engage with a pair of engagement holes 22c, 22c formed in the side piece 22b are provided so as to protrude from the card 23. A projecting portion 25 that presses the movable spring piece 15 is provided on a surface facing the movable spring piece 15, and engages with an engagement hole 15 d formed in the movable spring piece 15 on the tip surface of the projecting portion 25. An engaging projection 26 is provided to project.
[0009]
When assembling this electromagnetic relay, first, the electromagnet block 16 is inserted into the recess 3a from the front side of the base 3 on which the fixed side terminal plate 12 and the movable side terminal plate 14 are respectively press-fitted and fixed. Attach to base 3. Thereafter, the card 23 is inserted between the side piece 22b of the armature 22 and the movable spring piece 15 from the front side of the base 3 with the tip of the movable spring piece 15 bent toward the fixed contact 11 side. The engagement protrusions 24 and 26 are engaged with the engagement hole 22c of the side piece 22b and the engagement hole 15d of the movable spring piece 15, respectively, and the card 23 is held between the side piece 22b and the movable spring piece 15. .
[0010]
[Problems to be solved by the invention]
In the electromagnetic relay configured as described above, the card 23 is inserted between the side piece 22b of the armature 22 and the movable spring piece 15 after the terminal plates 12 and 14 and the electromagnet block 16 are mounted in the recess 3a of the base 3. is doing. Therefore, when the card 23 is inserted, as shown in FIG. 10 (b), the position of the movable spring piece 15 (see FIG. 10 (a)) with the card 23 attached to both surfaces of the card 23, respectively. It was necessary to bend the movable spring piece 15 toward the lid plate 4 by the height of the protruding protrusions 24 and 26. Further, when the card 23 is inserted, the positions of the engagement holes 22c and 15d formed in the side piece 22b of the armature 22 and the movable spring piece 15 are difficult to understand, and the assembling workability of the card 23 is poor. was there.
[0011]
The present invention has been made in view of the above problems, and an object thereof is to provide an electromagnetic relay with improved assembly workability.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, in the invention of claim 1, a coil, a core portion made of a magnetic material inserted in the center of the coil, a yoke made of a magnetic material having one end coupled to one side of the core portion, and An electromagnetic block formed of a magnetic material and swingably attached to the other end of the yoke and having an armature attracted to the other side of the core in response to energization of the coil, and a fixed contact provided with a fixed contact A flexible movable contact plate provided with a plate, a movable contact that comes into contact with and away from the fixed contact, and a recess open to one side, and both contact plates and an electromagnetic block are in the recess. A juxtaposed base; Inserted between the movable contact plate and the armature from the opening side of the recess A drive member that is mounted between the movable contact plate and the armature and transmits the movement of the armature to the movable contact plate; and a locked portion provided on the armature at a portion of the drive member facing the armature Provided with a locking part that engages with the concave and convex portions, on the part of the movable contact plate facing the drive member, Located on both sides of the drive member inserted from the opening side of the recess, A pair of holding pieces that hold the end of the drive member in between are formed by cutting up part of the movable contact plate, and it is driven between the movable contact plate and the armature mounted in the recess When attaching a member, it is necessary to bend the movable contact plate toward the fixed contact plate so that the engaging portion provided on the drive member and the engaged portion provided on the armature do not interfere with the armature or the drive member. A pair of holding pieces are formed by cutting and raising at a portion of the movable contact plate facing the driving member, and the end of the driving member is held between the pair of holding pieces. Compared to the case where the driving member is provided with a locking portion that engages the concave and convex portions, the amount of bending of the movable contact plate is reduced, and the assembly work can be performed easily. In addition, when the driving member is inserted between the pair of holding pieces, the driving member is guided by the holding pieces, and the engaging portion of the driving member and the engaged portion of the armature are unevenly engaged. The position can be easily found, and the workability of the assembly work is improved.
[0013]
According to a second aspect of the present invention, in the first aspect of the invention, the distance between the tip portions of the pair of holding pieces is wider than the distance near the root, and the distance between the pair of holding pieces is the tip portion. Since it is wider than the vicinity of the root, when the drive member is inserted between the movable contact plate and the armature, the end of the drive member on the movable contact plate side is drawn between the holding pieces. Assembling work of members can be easily performed.
[0014]
According to a third aspect of the present invention, in the first aspect of the present invention, the driving member is provided with a cover portion that covers the portion of the armature facing the bottom surface of the recess, and the driving member is mounted on the armature. The cover of the drive member covers the portion of the armature on the bottom side of the recess and is locked to the portion of the armature that is first inserted into the recess. Thus, the drive member and the electromagnet block can be assembled into the base at the same time while being mounted on the base, thereby reducing the time and labor of assembly.
[0015]
According to a fourth aspect of the present invention, in the first aspect of the present invention, the driving member is provided with a cover portion for covering the armature portions facing the bottom surface side and the opening side of the recess. Since the part covers the part of the armature on the bottom side and the opening side of the recess, the state where the drive member is placed on the armature is stable, and the assembly work of the drive member and the electromagnetic block is easy Yes.
[0016]
According to a fifth aspect of the invention, in the first aspect of the invention, the driving member is provided with an insulating wall that covers a portion of the armature facing the movable contact plate, and the armature facing the movable contact plate by the insulating wall Therefore, the insulation performance between the armature and the movable contact plate can be improved.
[0017]
According to a sixth aspect of the present invention, in the first aspect of the present invention, a substantially box-like shape having a single opening is provided, and the case is provided with a case that accommodates the base therein, and is engaged with a fitting groove formed on the inner surface of the case. The fitting projection is provided on the base. By fitting the fitting groove and the fitting projection, the base and the case can be easily coupled without requiring a separate member.
[0018]
According to a seventh aspect of the present invention, in the first aspect of the present invention, the contact plate is provided with a press-fit groove into which the contact plate is press-fitted and fixed, and each contact plate is press-fitted into the press-fit groove. Can be easily fixed to the base.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
The electromagnetic relay of this embodiment will be described with reference to FIGS. The body 1 of this electromagnetic relay is composed of a substantially box-shaped case 2 whose upper surface is open, and a base 3 attached to the case 2 so as to close the opening 2a of the case 2. The case 2 and the base 3 are Each is formed from an insulating synthetic resin.
[0020]
As shown in FIG. 4, the base 3 is formed in a substantially box shape, with the back plate 5 and the side walls 6, 7 respectively hanging from the three sides of the substantially rectangular lid plate 4 that closes the opening of the case 2. A recess 3a is formed which is surrounded by the cover plate 4, the back plate 5 and the side walls 6 and 7 and is open at the front and lower surfaces. A substantially U-shaped insulating wall 8 is erected from the back plate 5 of the base 3 toward the front side, and the center of the base 3 is divided vertically. In addition, partition walls 9 and 10 extending to the middle of the base 3 project from the portions between the insulating walls 8 and the cover plate 4 on the side walls 6 and 7, respectively. A partition wall 9 projecting from the left side wall 6 in FIG. 1 is provided above the partition wall 10 projecting from the right side wall 7 in FIG.
[0021]
In the recess 3 a of the base 3, a fixed terminal plate (fixed contact plate) 12 formed of a conductive material and provided with a fixed contact 11, and a movable contact formed of a conductive material and in contact with the fixed contact 11 detachably. The movable side terminal plate 14 provided with 13 is press-fitted and fixed, and an electromagnet block 16 that opens and closes both contacts 11 and 13 in response to energization is housed.
[0022]
The fixed-side terminal plate 12 includes a substantially strip-shaped center piece 12a, a tab terminal 12b protruding from one end edge of the center piece 12a in a direction substantially orthogonal to the center piece 12a, and a tab terminal 12b extending from the other end edge of the center piece 12a. Board terminal 12c projecting in the opposite direction is formed in a continuous and integral shape, and is formed in a substantially Z shape, and fixed contact 11 is fixed to the surface of central piece 12a on the side from which board terminal 12c projects. Yes.
[0023]
On the other hand, as shown in FIGS. 3A and 3B and FIG. 4, the movable terminal plate 14 has a substantially strip-shaped central piece 14a and a direction substantially orthogonal to the central piece 14a from one end edge of the central piece 14a. The protruding tab terminal 14b and the board terminal 14c protruding in the opposite direction to the tab terminal 14b from the other end edge of the central piece 14a are formed integrally and continuously in a substantially Z shape. A pair of protrusions 14d are provided on the lower surface. The movable contact 13 is fixed to one end of a flexible movable spring piece 15 which is formed in a substantially Z shape by bending a substantially strip-shaped plate piece having conductivity. A pair of caulking holes 15b are formed in the other end portion of the movable spring piece 15, and a convex portion 14d protruding from the central piece 14a of the movable side terminal plate 14 with the movable contact 13 facing upward. The movable spring piece 15 is caulked and fixed to the movable terminal plate 14 by inserting it into the caulking hole 15b and crushing the head of the convex portion 14d. Here, a movable contact plate is constituted by the movable terminal plate 14 and the movable spring piece 15.
[0024]
Here, the cover plate 4 of the base 3 is formed with a pair of press-fit grooves 4a and 4b opened to the front side, and the side walls 6 and 7 are formed with press-fit grooves 6a and 7a opened to the front side, respectively. The fixed-side terminal plate 12 is press-fitted and fixed to the base 3 by press-fitting the base portion of the tab terminal 12b into the press-fitting groove 4a and the vicinity of the connecting portion of the central piece 12a to the board terminal 12c into the press-fitting groove 7a. The movable terminal plate 14 is press-fitted and fixed to the base 3 by pressing the base of the tab terminal 14b into the press-fit groove 4b and the vicinity of the connecting portion of the central piece 14a to the board terminal 12c into the press-fit groove 6a. Thus, since both the terminal plates 12 and 14 are fixed to the base 3 by press-fitting, both the terminal plates 12 and 14 can be easily attached without requiring a separate member.
[0025]
As shown in FIG. 5, the electromagnet block 16 has a substantially cylindrical shape and is press-fitted and fixed to a coil bobbin 17 provided with flanges 17a and 17a at both ends and both flanges 17a of the coil bobbin 17 formed of a conductive material. The coil terminals 27 and 27, and the coil 18 wound around the winding piece 27a that is wound around the coil bobbin 17 between the flanges 17a and 17a and projecting from both ends of the coil terminal 27; An iron core (core portion) 19 that is columnar and has a large-diameter magnetic pole portion 19a at one end and is inserted into the cylinder of the coil bobbin 17, and one end surface of the coil 18 formed from a magnetic material in a substantially L shape. A yoke 20 that covers the side surface and has the other end of the iron core 19 fixed to a hole 20c provided in one side piece 20a, and a caulking protrusion 20d that protrudes from the other side piece 20b of the yoke 20 are formed in the hole 21a. And a hinge spring 21 that is caulked and fixed to the other side piece 20b by crushing the head of the caulking protrusion 20d, and the inside of the bent portions of both side pieces 22a and 22b that are formed in a substantially L shape from a magnetic material. The armature 21 is rotatably supported by the tip of the other side piece 20b of the yoke 20 as a fulcrum, and the one side piece 22a is attracted to or released from the magnetic pole part 19a of the iron core 19 in response to energization of the coil 18. 22.
[0026]
As described above, the armature 22 swings in response to energization of the coil 18, but a card (drive member) 23 for transmitting the movement of the armature 22 to the movable spring piece 15 is attached to the base 3. It has been. The card 23 is made of an insulating synthetic resin, has a substantially flat plate shape, and is attached between the side piece 22 b of the armature 22 and the movable spring piece 15 so as to be substantially parallel to the side piece 22 b. Engaging protrusions 24 and 24 that respectively engage with a pair of engaging holes 22c formed in the side piece 22b project from the surface of the card 23 that faces the side piece 22b. On the surface facing the piece 15, a projecting portion 25 whose tip surface is in contact with the movable spring piece 15 is provided. On the other hand, a part of the movable spring piece 15 is cut and raised between the abutting portions 15c of the movable spring piece 15 which are in contact with the protruding portion 25 of the card 23 so that the protruding portion 25 is interposed therebetween. A pair of guide pieces (holding pieces) 15a to be held is formed, and the protruding portion 25 is held between the pair of guide pieces 15a. In the electromagnet block 16 shown in FIGS. 1 and 2, a hole 22 c that engages with an engaging protrusion 24 that protrudes from the card 23 is formed in the side piece 22 b of the armature 22 that faces the card 23. However, as shown in FIG. 5, an engagement groove 22 d that engages with the engagement protrusion 24 of the card 23 may be provided in the side piece 22 b of the armature 22.
[0027]
The procedure for assembling this electromagnetic relay will be briefly described with reference to FIG. First, the electromagnet block 16 is inserted into the recess 3 a from the front side of the base 3 to which the fixed side terminal plate 12 and the movable side terminal plate 14 are respectively press-fitted and fixed, and the electromagnet block 16 is attached to the base 3. At this time, both side pieces 8a and 8a of the insulating wall 8 of the base 3 are engaged with grooves 17b and 17b formed in both flange portions 17a and 17a of the coil bobbin 17, and the side piece 20b of the yoke 20 and the coil 18 are engaged. Since the insulating wall 8 is interposed between them, the iron core 19, the yoke 20, the armature 22 and the coil 18 are insulated.
[0028]
Next, the card 23 is inserted between the side piece 22b of the armature 22 and the movable spring piece 15 from the front side of the base 3 in a state where the tip of the movable spring piece 15 is bent toward the fixed contact 11 side. The engagement protrusions 24 and 24 of the 23 are engaged with the engagement holes 22 c and 22 c of the side piece 22 b, and the card 23 is held between the side piece 22 b and the movable spring piece 15. Here, when the protruding portion 25 of the card 23 is inserted between the guide pieces 15a, 15a provided on the movable spring piece 15, the card 23 is guided by the guide pieces 15a, 15a, and the engagement protrusions 24, 24 and the engagement holes 22c, 22c of the side piece 22b are engaged, so that the position where the card 23 is inserted can be easily confirmed, and the workability of the assembly work is improved. Further, the distance between the tips of the guide pieces 15a and 15a is wider than the distance near the base and is arranged in a cross-sectional shape, so that the protruding portion 25 of the card 23 is inserted when the card 23 is inserted. Since the card 23 is guided between the guide pieces 15a, the card 23 can be easily assembled.
[0029]
In addition, since the projecting portion 25 of the card 23 is held by the guide pieces 15a and 15a of the movable spring piece 15, it is not necessary to provide an engaging protrusion on the projecting portion 25 unlike the conventional electromagnetic relay. Since the tip end surface of the portion 25 and the movable spring piece 15 are in contact, when the card 23 is inserted, the movable spring piece is equal to the height of the engaging projection 24 provided on the surface of the card 23 on the armature 22 side. 15 may be bent, and the amount by which the movable spring piece 15 is bent is smaller than that of a conventional electromagnetic relay. Accordingly, the force for bending the movable spring piece 15 is small, and the card 23 can be assembled easily.
[0030]
Finally, when the base 3 is inserted into the case 2 through the opening 2 a of the case 2, the fitting protrusions 6 b and 7 b protruding from the side walls 6 and 7 of the base 3 are formed on the inner surface of the case 2. The case 2 and the base 3 are coupled by fitting the grooves 2b and 2b to the concave and convex portions. As described above, the fitting protrusions 6b and 7b and the fitting grooves 2b and 2b are concavo-convexly fitted, so that the case 2 and the base 3 can be easily coupled without requiring a separate member. At this time, the board terminals 12 c and 14 c and the coil terminals 27 and 27 protrude from the case 2 through insertion holes (not shown) formed in the bottom surface of the case 2.
[0031]
In this electromagnetic relay, the board terminals 12c and 14c are soldered to the printed circuit board together with the coil terminals 27 and 27, and the receptacle terminals having lead wires connected to the tab terminals 12b and 14b are connected. When a voltage is applied between the coil terminals 27 and 27 and a current flows through the coil 18, the side piece 22a of the armature 22 is attracted to the magnetic pole portion 19a of the iron core 19, and the armature 22 is a side piece of the yoke 20. It rotates counterclockwise in FIG. 1 with the tip of 20b as a fulcrum. At this time, the card 23 moves upward in the figure in accordance with the rotation of the armature 22, and the movable spring piece 15 is bent toward the fixed contact 11 to bring the movable contact 13 and the fixed contact 11 into contact with each other. Thereafter, when energization of the coil 18 is stopped, the force for attracting the side piece 22a of the armature 22 disappears, and the armature 22 rotates clockwise in FIG. 1 by the spring return force of the movable spring piece 15 and the hinge spring 21. The movable contact 13 and the fixed contact 11 are dissociated.
[0032]
(Embodiment 2)
The electromagnetic relay of this embodiment will be described with reference to FIGS. In the present embodiment, in the electromagnetic relay of the first embodiment, from the side edge of the card 23 facing the back plate 5 of the base 3 and the opposite side edge, the recess 3a of the side piece 22b of the armature 22 is formed. A cover portion 28 that covers the bottom surface side and the opening side is suspended, and a cover portion (insulating wall) 29 that covers the tip surface of the side piece 22b from the side edge of the card 3 on the side wall 7 side of the card 23 is suspended. Further, a tongue piece 29 a protruding from the lower edge of the cover portion 29 toward the side wall 7 is provided. Since the configuration other than the card 23 is the same as that of the electromagnetic relay of the first embodiment, the same components as those of the electromagnetic relay of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
[0033]
The procedure for assembling this electromagnetic relay will be briefly described. First, similarly to the first embodiment, the fixed terminal plate 12 and the movable terminal plate 14 are press-fitted and fixed in the recess 3 a of the base 3. Next, as shown in FIG. 8A, when the card 23 is placed on the side piece 22b of the armature 22, the cover portions 28 and 29 of the card 23 cover both side surfaces and the front end surface of the side piece 22b. The engagement protrusion 24 of the card 23 and the engagement groove 22d of the side piece 22b engage with each other, and the side piece 22b of the armature 22 is held in the space surrounded by the cover portions 28 and 29 of the card 23. A card 23 is mounted on 16.
[0034]
Thereafter, as shown in FIG. 8B, when the electromagnet block 16 having the card 23 placed on the armature 22 is inserted from the front side of the base 3 to which both the terminal plates 12 and 14 are press-fitted and fixed, the card 23 The protruding base 25 is inserted between the guide pieces 15 a and 15 a of the movable spring piece 15. In addition, since the taper surface 25a is formed in the bottom surface side (back plate 5 side) portion of the recess 3a in the protrusion 25, the card 23 can be easily inserted using the taper surface 25a. it can.
[0035]
In this embodiment, the card | curd 23 is provided with the cover parts 28 and 28 which respectively cover the bottom face side and opening part of the recess 3a in the side piece 22b of the armature 22, and the cover part 28 is first in the recess 3a. Therefore, the card 23 and the electromagnet block 16 can be incorporated into the base 3 at a time with the card 23 placed on the armature 22. Thus, in this embodiment, since the electromagnet block 16 and the card 23 are incorporated into the base 3 at a time, the assembly work can be simplified as compared with the case where the electromagnet block 16 and the card 23 are separately incorporated into the base 3. Workability can be improved. In this embodiment, the cover portions 28 and 28 are suspended from both side edges of the card 23, and the cover portions 28 and 28 cover both side surfaces of the side piece 22b. Although the position of the card 23 on the upper side is stabilized, only the cover portion 28 that covers the portion of the side piece 22b of the armature 22 on the bottom surface side of the recess 3a may be provided on the card 23.
[0036]
Further, a cover portion 29 that covers the front end surface of the side piece 22b is suspended from a side edge of the card 23 that faces the side wall 7, and a tongue piece 29a that protrudes toward the side wall 7 is projected from the lower edge of the cover portion 29. Therefore, the cover 29 and the tongue piece 29a cover the portion of the side piece 22b facing the movable spring piece 11, so that the movable spring piece 15 (that is, the movable contact 11) and the armature 22 (that is, the coil 18). The insulation distance can be ensured and the insulation can be improved.
[0037]
【The invention's effect】
As described above, the invention of claim 1 includes a coil, a core portion made of a magnetic material inserted in the center of the coil, a yoke made of a magnetic material having one end coupled to one side of the core portion, and a magnetic material. An electromagnetic block having an armature that is attached to the other end of the yoke and is attached to the other end of the yoke in a swingable manner and is attracted to the other side of the core in response to energization of the coil, a fixed contact plate provided with a fixed contact, A flexible movable contact plate provided with a movable contact that comes into contact with and away from the fixed contact, and a recess opened on one side, and both contact plates and an electromagnetic block are arranged in parallel in the recess. And base Inserted between the movable contact plate and the armature from the opening side of the recess A drive member that is mounted between the movable contact plate and the armature and transmits the movement of the armature to the movable contact plate; and a locked portion provided on the armature at a portion of the drive member facing the armature Provided with a locking part that engages with the concave and convex portions, on the part of the movable contact plate facing the drive member, Located on both sides of the drive member inserted from the opening side of the recess, A pair of holding pieces that hold the end of the drive member in between are formed by cutting up part of the movable contact plate, and it is driven between the movable contact plate and the armature mounted in the recess When attaching a member, it is necessary to bend the movable contact plate toward the fixed contact plate so that the engaging portion provided on the drive member and the engaged portion provided on the armature do not interfere with the armature or the drive member. A pair of holding pieces are formed by cutting and raising at a portion of the movable contact plate facing the driving member, and the end of the driving member is held between the pair of holding pieces. Compared with the case where the driving member is provided with a locking portion that engages with the raised locked portion, the amount of bending of the movable contact plate is reduced, and there is an effect that the assembly work can be performed easily. In addition, when the driving member is inserted between the pair of holding pieces, the driving member is guided by the holding pieces, and the engaging portion of the driving member and the engaged portion of the armature are unevenly engaged. The position can be easily found, and the workability of the assembly work is improved.
[0038]
The invention of claim 2 is characterized in that, in the invention of claim 1, the distance between the tip portions of the pair of holding pieces is wider than the distance near the base, Since it is wider than the vicinity of the root, when the drive member is inserted between the movable contact plate and the armature, the end of the drive member on the movable contact plate side is drawn between the holding pieces. There is an effect that the assembling work of the members can be easily performed.
[0039]
According to a third aspect of the present invention, in the first aspect of the present invention, the driving member is provided with a cover portion that covers the portion of the armature facing the bottom surface of the recess, and the driving member is mounted on the armature. The cover of the drive member covers the portion of the armature on the bottom side of the recess and is locked to the portion of the armature that is first inserted into the recess. The driving member and the electromagnet block can be assembled into the base at a time while being mounted on the base, and there is an effect that the labor of assembly can be reduced.
[0040]
According to a fourth aspect of the present invention, in the first aspect of the present invention, the drive member is provided with a cover portion that covers each of the armature portions facing the bottom surface side and the opening side of the recess. Since the part covers the part of the armature on the bottom side and the opening side of the recess, the state where the drive member is placed on the armature is stable, and the assembly work of the drive member and the electromagnetic block is easy There is an effect that can be done.
[0041]
According to a fifth aspect of the present invention, in the first aspect of the invention, the driving member is provided with an insulating wall that covers a portion of the armature facing the movable contact plate, and the armature facing the movable contact plate by the insulating wall is provided. This is advantageous in that the insulation performance between the armature and the movable contact plate is improved.
[0042]
The invention of claim 6 is the invention of claim 1, which is substantially box-shaped with an opening on one side, includes a case for housing the base therein, and is engaged with a fitting groove formed on the inner side surface of the case. The fitting projection is provided on the base, and the fitting groove and the fitting projection are fitted to each other so that the base and the case can be easily coupled without requiring a separate member. effective.
[0043]
The invention of claim 7 is characterized in that, in the invention of claim 1, each contact plate is provided with a press-fit groove into which the contact plate is press-fitted and fixed, and each contact plate is press-fitted into the press-fit groove. Can be easily fixed to the base.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an electromagnetic relay according to a first embodiment.
FIG. 2 is an exploded perspective view in which a part can be omitted.
FIGS. 3A and 3B show the movable terminal plate of the above, where FIG. 3A is a front view and FIG. 3B is a top view.
FIG. 4 is an exploded perspective view in which a part can be omitted.
FIG. 5 is an exploded perspective view showing the electromagnet block same as above.
FIG. 6 is a perspective view showing the case.
FIG. 7 is a cross-sectional view of an electromagnetic relay according to a second embodiment.
FIGS. 8A and 8B are exploded perspective views for explaining the assembly procedure of the above.
FIG. 9 is a perspective view showing the card.
10A and 10B show a conventional electromagnetic relay, wherein FIG. 10A is a cross-sectional view showing a state in which a card is assembled, and FIG. 10B is a cross-sectional view showing a state in the middle of assembling the card.
FIG. 11 is an exploded perspective view in which a part can be omitted.
[Explanation of symbols]
3 base
3a recess
11 Fixed contacts
12 Fixed contact plate
13 Movable contact
14 Movable contact plate
15 Movable spring piece
15a Guide piece
16 Electromagnet block
22 Armature
22c engagement hole
23 cards
24 engagement protrusion
25 The base

Claims

コイル、コイルの中心に挿入された磁性材料からなる芯部、一端が芯部の一側に結合された磁性材料からなる継鉄、及び、磁性材料から形成され継鉄の他端に揺動自在に取り付けられコイルへの通電に応じて芯部の他側に吸着される接極子を有する電磁石ブロックと、固定接点が設けられた固定接点板と、固定接点に接離自在に接触する可動接点が設けられた可撓性を有する可動接点板と、一側に開放された凹所を有し該凹所内に両接点板及び電磁石ブロックが並設されたベースと、前記凹所の開口側から可動接点板と接極子との間に挿入されて可動接点板と接極子との間に取り付けられ、接極子の動きを可動接点板に伝達する駆動部材とを備え、接極子と対向する駆動部材の部位に、接極子に設けられた被係止部と凹凸係止する係止部を設け、駆動部材と対向する可動接点板の部位に、凹所の開口側から挿入される駆動部材の両側に位置して、駆動部材の端部を間に保持する一対の保持片を可動接点板の一部を切り起こすことにより形成したことを特徴とする電磁継電器。Coil, core made of magnetic material inserted in the center of the coil, yoke made of magnetic material with one end coupled to one side of the core, and swingable to the other end of the yoke made of magnetic material An electromagnet block having an armature attached to the other end of the core and being attracted to the other side of the core in response to energization of the coil, a fixed contact plate provided with a fixed contact, and a movable contact contacting the fixed contact in a detachable manner A flexible movable contact plate provided, a base having a recess open on one side, in which both contact plates and an electromagnetic block are arranged in parallel, and movable from the opening side of the recess A drive member that is inserted between the contact plate and the armature and attached between the movable contact plate and the armature, and that transmits the movement of the armature to the movable contact plate; At the site, the locking part provided on the armature and the locking part that engages the concave and convex , The site of the movable contact plate facing the driving member, located on opposite sides of the drive member to be inserted from the open side of the recess, a pair of holding pieces for holding between the end of the drive member of the movable contact plate An electromagnetic relay characterized by being formed by cutting up a part.

上記一対の保持片の先端部の間隔を、付け根付近の間隔に比べて広げたことを特徴とする請求項１記載の電磁継電器。2. The electromagnetic relay according to claim 1, wherein the distance between the tips of the pair of holding pieces is wider than the distance near the base.

上記凹所の底面側と対向する接極子の部位を覆う覆い部を駆動部材に設けたことを特徴とする請求項１記載の電磁継電器。The electromagnetic relay according to claim 1, wherein a cover portion that covers a portion of the armature facing the bottom surface side of the recess is provided on the drive member.

上記凹所の底面側及び開口側と対向する接極子の部位を夫々覆う覆い部を駆動部材に設けたことを特徴とする請求項１記載の電磁継電器。The electromagnetic relay according to claim 1, wherein the driving member is provided with a cover portion that covers a portion of the armature facing the bottom surface side and the opening side of the recess.

可動接点板と対向する接極子の部位を覆う絶縁壁を駆動部材に設けたことを特徴とする請求項１記載の電磁継電器。The electromagnetic relay according to claim 1, wherein the driving member is provided with an insulating wall that covers a portion of the armature facing the movable contact plate.

一面開口した略箱状であって、内部にベースを収納するケースを備え、ケースの内側面に形成された嵌合溝と凹凸嵌合する嵌合突起をベースに設けたことを特徴とする請求項１記載の電磁継電器。A substantially box-like shape having an opening on one side, comprising a case for housing the base therein, and provided with a fitting projection on the inner side of the case, and a fitting projection for engaging with the concave and convex portions on the base. Item 1. An electromagnetic relay according to item 1.

上記各接点板が圧入固定される圧入溝をベースに設けたことを特徴とする請求項１記載の電磁継電器。2. The electromagnetic relay according to claim 1, wherein a press-fitting groove in which the contact plates are press-fitted and fixed is provided in the base.