JP4048157B2

JP4048157B2 - Electronic device cover mounting structure

Info

Publication number: JP4048157B2
Application number: JP2003192727A
Authority: JP
Inventors: 芳裕三野
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 2003-07-07
Filing date: 2003-07-07
Publication date: 2008-02-13
Anticipated expiration: 2023-07-07
Also published as: JP2005032746A; CN100521884C; CN1578605A

Description

【０００１】
【発明の属する技術分野】
本発明はテレビチューナ等に使用して好適な電子機器のカバー取付構造に関する。
【０００２】
【従来の技術】
従来の電子機器のカバー取付構造の図面を説明すると、図９は従来の電子機器のカバー取付構造を示す分解斜視図、図１０は従来の電子機器のカバー取付構造に係る要部断面図である。
【０００３】
次に、従来の電子機器のカバー取付構造の構成を図９，図１０に基づいて説明すると、金属板がロ字状に折曲されて形成された枠体５１は、両側に設けられた開放部５１ａ、５１ｂと、ロ字状のそれぞれの四辺に設けられたコ字状の孔５１ｃと、コ字状の孔５１ｃ内に位置し、枠体５１に繋がって片持ち状に形成された舌片５１ｄと、４角の近傍から下方に突出する複数個の取付足５１ｅを有する。
【０００４】
金属板からなるシールド板５２は、下方に突出する突片５２ａを有し、このシールド板５２は、枠体５１内に配置されて、枠体５１内が複数個の区画室に区画されると共に、シールド板５２が枠体５１内に配置された際、突片５２ａは、舌片５１ｄに位置した状態となる。
【０００５】
絶縁基板からなる回路基板５３は、外周縁に複数個の切り欠き部５３ａを有すると共に、表面には、配線用の導電パターン（図示せず）が設けられ、この回路基板５３には、種々の電子部品５４が搭載されて、所望の電気回路が形成されている。
【０００６】
この回路基板５３は、切り欠き部５３ａ内にシールド板５２の突片５２ａが位置した状態で、枠体５１内に収納され、半田５５によって、舌片５１ｄと突片５２ａ、及び回路基板５３に設けられた接地用パターン（図示せず）が接続、固定される。
【０００７】
この時、舌片５１ｄは、回路基板５３の接地用パターンを枠体５１に接地すると共に、半田５５付の際の熱の逃げを少なくして、半田５５付を良くするようにしている。
【０００８】
金属板からなる第１のカバー（上カバー）５６と第２のカバー（下カバー）５７のそれぞれは、四角形の平坦な平板状部５６ａ、５７ａと、この平板状部５６ａ、５７ａの４辺のそれぞれから直角に折り曲げられた側板５６ｂ、５７ｂと、この側板５６ｂ、５７ｂから突出し、根本部と先端部とが同じ幅をなした複数個の取付脚５６ｃ、５７ｃを有する。
【０００９】
このような構成を有する第１のカバー５６は、枠体５１の開放部５１ａを平板状部５６ａで覆った状態で、枠体５１の平坦面に取付脚５６ｃの先端部を弾接させて、枠体５１に取り付けられる。
【００１０】
この時、取付脚５６ｃは、根本部と先端部とが同じ幅をなしているため、先端部の弾圧力が弱く、また、取付脚５６ｃが外方に開いた状態で枠体５１に弾接した状態となるが、取付脚５６ｃは、根本部と先端部とが同じ幅となっているため、根本部の反力が弱く、開いた状態で塑性変形する。
【００１１】
また、第２のカバー５７は、枠体５１の開放部５１ｂを平板状部５７ａで覆った状態で、枠体５１の平坦面に取付脚５７ｃの先端部を弾接させて、枠体５１に取り付けられる。
【００１２】
この時、取付脚５７ｃは、根本部と先端部とが同じ幅をなしているため、先端部の弾圧力が弱く、また、取付脚５７ｃが外方に開いた状態で枠体５１に弾接した状態となるが、取付脚５７ｃは、根本部と先端部とが同じ幅となっているため、根本部の反力が弱く、開いた状態で塑性変形する。
【００１３】
また、第１，第２のカバー５６，５７が取り付けられた際、取付脚５６ｃ、５７ｃ同士は、上下方向に間隔を置いた状態で対向して配置され、このため、枠体５１が上下方向に大きくなって、大型となる。（例えば、特許文献１参照）
【００１４】
このような構成を有する従来の電子機器のカバー取付構造にあっては、第１，第２のカバー５６，５７の取付脚５６ｃ、５７ｃが枠体５１の平坦面に弾接するため、振動や衝撃によって、第１，第２のカバー５６，５７は、位置ズレを生じる。
また、第１，第２のカバー５６，５７が取り付けられた際、取付脚５６ｃ、５７ｃ同士は、上下方向に間隔を置いた状態で対向して配置され、このため、枠体５１が上下方向に大きくなって、大型となる。
【００１５】
【特許文献１】
特開２００２−９４６９号公報
【００１６】
【発明が解決しようとする課題】
従来の電子機器のカバー取付構造にあっては、第１，第２のカバー５６，５７の取付脚５６ｃ、５７ｃが枠体５１の平坦面に弾接するため、振動や衝撃によって、第１，第２のカバー５６，５７が位置ズレを生じるという問題がある。
また、第１，第２のカバー５６，５７が取り付けられた際、取付脚５６ｃ、５７ｃ同士は、上下方向に間隔を置いた状態で対向して配置され、このため、枠体５１が上下方向に大きくなって、大型になるという問題がある。
【００１７】
そこで、本発明はカバーの位置ずれが無く、且つ、枠体の強度が強く、小型化に適した電子機器のカバー取付構造を提供することを目的とする。
【００１８】
【課題を解決するための手段】
上記課題を解決するための第１の解決手段として、ロ字状に形成され、両側に開放部を有する金属板からなる枠体と、この枠体内に取り付けられ、端面にサイド電極を設けた回路基板と、前記枠体の一方の前期開放部を覆った状態で、前記枠体に掛け止めされて取り付けられた第１のカバーと、前記枠体の他方の前記開放部を覆った状態で、前記枠体に掛け止めされて取り付けられた第２のカバーとを備え、前記枠体は、切り曲げされて、前記サイド電極に接触する接触片と、この接触片に隣接した状態で、前記接触片の一辺側、または/及び他片側に設けられた掛け止め孔を有し、前記第１，第２のカバーのそれぞれは、前記開放部を覆う平板状部と、この平板状部から折り曲げられた取付脚と、この取付脚の端部に設けられた係止部を有し、前記第１，第２のカバーの少なくとも何れか一方の前記係止部が前記掛け止め孔に係止され、前記接触片の側面が前記サイド電極に接するように、前記接触片が前記回路基板と平行方向に前記枠体内側に切り曲げされて、前記係止部が係止される前記掛け止め孔を形成した構成とした。
【００１９】
また、第２の解決手段として、前記第１，第２のカバーの双方の前記係止部が前記掛け止め孔に係止された構成とした。
また、第３の解決手段として、前記枠体には、前記係止部を係止するための係止孔が設けられ、前記第１，第２のカバーの何れか一方の前記係止部が前記掛け止め孔に係止されると共に、前記第１，第２のカバーの他方の前記係止部が前記係止孔に係止された構成とした。
【００２０】
また、第４の解決手段として、前記係止孔は、前記接触片に並設した状態で形成され、前記係止孔と前記掛け止め孔は、互いに平行な異なる直線上に位置して、互いに位置ずれした状態で配置された構成とした。
【００２１】
また、第５の解決手段として、前記接触片は、前記枠体に繋がった連結部と、この連結部の端部に設けられ、前記サイド電極に接触する当接部を有して、片持ち状に形成されると共に、前記枠体の前記接触片の外周部には、前記掛け止め孔を形成するためのコ字状の孔が設けられた構成とした。
【００２２】
また、第６の解決手段として、前記連結部の幅寸法が前記当接部の幅寸法よりも小さく形成された構成とした。
【００２３】
【発明の実施の形態】
本発明の電子機器のカバー取付構造の図面を説明すると、図１は本発明の電子機器のカバー取付構造を示す平面図、図２は本発明の電子機器のカバー取付構造に係り、カバーの一部を切り欠いた状態を示す平面図、図３は本発明の電子機器のカバー取付構造を示す正面図、図４は本発明の電子機器のカバー取付構造に係り、カバーを取り去った状態を示す正面図である。
【００２４】
また、図５は本発明の電子機器のカバー取付構造を示す側面図、図６は本発明の電子機器のカバー取付構造に係り、カバーを取り去った状態を示す側面図、図７は図３の７−７線における断面図、図８は図３の８−８線における断面図である。
【００２５】
次に、本発明の電子機器のカバー取付構造の構成を図１〜図８に基づいて説明すると、金属板がロ字状に折曲されて形成された枠体１は、両側に設けられた開放部１ａ、１ｂと、ロ字状のそれぞれの四辺に設けられたコ字状の孔１ｃと、コ字状の孔１ｃ内に位置し、枠体１に繋がって片持ち状に形成された接触片２と、接触片２に並設して形成された係止孔１ｄと、４角の近傍から下方に突出する複数個の取付足１ｅを有する。
【００２６】
また、接触片２は、枠体１に繋がった細幅の連結部２ａと、この連結部２ａの端部に設けられ、幅寸法が連結部２ａより大きな当接部２ｂからなると共に、コ字状の孔１ｃは、接触片２の一辺側に位置し、孔１ｃの一部で形成される掛け止め孔３ａと、接触片２の他辺側に位置し、孔１ｃの一部で形成される掛け止め孔３ｂを有する。
【００２７】
そして、係止孔１ｄは、掛け止め孔３ａ、３ｂよりも枠体１の中央部に設けられ、掛け止め孔３ａ、３ｂと係止孔１ｄは、図４に示すように、互いに平行な異なる直線Ｓ１，Ｓ２，Ｓ３上に位置して、互いに位置ずれした状態で配置されている。
【００２８】
なお、上記実施例では、２個の掛け止め孔３ａ、３ｂを設けたもので説明したが、掛け止め孔３ａ、３ｂは、何れか一方のみでも良い。
また、接触片２は、片持ち状のもので説明したが、両持ち状のものを使用しても良い。
【００２９】
セラミック基板等からなる回路基板４は、両面、或いは片面に設けられた配線用の導電パターン５と、端面４ａの凹部４ｂ内に設けられた接地用のサイド電極６を有し、この回路基板４には、種々の電子部品７が搭載されて、所望の電気回路が形成されている。
【００３０】
この回路基板４は、枠体１内に位置した状態で、適宜手段によって枠体１に取り付けられおり、回路基板４が取り付けられた際、回路基板４の凹部４ｂが接触片２に対向すると共に、端面４ａが係止孔１ｄと対向した状態となっている。
【００３１】
そして、接触片２が枠体１の外方から枠体１の内方に向けて押し圧されて、連結部２ａが曲げられると、当接部２ｂがサイド電極６に接触した状態となって、サイド電極６が枠体１に接地される。
即ち、接触片２は、切り曲げされた状態で、サイド電極６に接触するようになっている。
また、ここでは図示しないが、当接部２ｂとサイド電極６とは、半田付けされて、両者が確実に導通された状態となっている。
【００３２】
金属板からなる第１のカバー（上カバー）７と第２のカバー（下カバー）８のそれぞれは、四角形の平板状部７ａ、８ａと、この平板状部７ａ、８ａの４辺のそれぞれから直角に折り曲げられた側板７ｂ、８ｂと、この側板７ｂ、８ｂに根本部が連結されて延びる複数個の取付脚７ｃ、８ｃと、この取付脚７ｃ、８ｃの一端に設けられたく字状の係止部７ｄ、８ｄを有する。
【００３３】
そして、取付脚７ｃ、８ｃは、係止部７ｄ、８ｄから側板７ｂ、８ｂ、或いは平板状部７ａ、８ａに近づくに従って、漸次幅広となるように形成されており、この実施例では、取付脚７ｃ、８ｃの両側辺側で漸次幅広となして、ハ字状（楔状）に形成されている。
【００３４】
なお、この実施例では、取付脚７ｃ、８ｃがハ字状に形成されたもので説明したが、取付脚７ｃ、８ｃの片方の側辺のみが漸次幅広となしたものでも良く、また、取付脚７ｃ、８ｃの根本部が平板状部７ａ、８ａに直接繋がったものでも良い。
【００３５】
このような構成を有する第１のカバー７は、枠体１の開放部１ａを平板状部７ａで覆った状態で、係止部７ｄを掛け止め孔３ａに係止して、枠体１に取り付けられる。
【００３６】
この時、係止部７ｄが掛け止め孔３ａに嵌入するまでの間において、取付脚７ｃが外方に開いた状態となるが、取付脚７ｃは、係止部７ｄから離れるに従って、漸次幅広となっているため、取付脚７ｃが開いた状態から戻されて、係止部７ｄが掛け止め孔３ａに嵌入するようになる。
即ち、取付脚７ｃは、開いた状態で塑性変形することなく、開く前の元の状態に確実に戻されると共に、係止部７ｄが掛け止め孔３ａに強く係止されるようになる。
【００３７】
なお、上記実施例では、係止部７ｄが掛け止め孔３ａに係止されたもので説明したが、係止部７ｄが掛け止め孔３ｂに係止されるようにしたものでも良い。
また、掛け止め孔３ａは、接触片２が枠体１内方に向けて切り曲げされた際の孔によって構成されても良い。
【００３８】
また、第２のカバー８は、枠体１の開放部１ｂを平板状部８ａで覆った状態で、係止部８ｄを係止孔１ｄに係止して、枠体１に取り付けられる。
この時、係止部８ｄが係止孔１ｄに嵌入するまでの間において、取付脚８ｃが外方に開いた状態となるが、取付脚８ｃは、係止部８ｄから離れるに従って、漸次幅広となっているため、取付脚８ｃが開いた状態から戻されて、係止部８ｄが係止孔１ｄに嵌入するようになる。
【００３９】
即ち、取付脚８ｃは、開いた状態で塑性変形することなく、開く前の元の状態に確実に戻されると共に、係止部８ｄが係止孔１ｄに強く係止されるようになる。
【００４０】
また、図３に示すように、第１，第２のカバー７，８の側板７ｂ、８ｂには、根本部が幅広となった取付脚７ｃ、８ｃを２個以上並設しているため、隣り合う取付脚７ｃ同士間の側板７ｂ、或いは取付脚８ｃ同士間の側板８ｂは、根本部が幅広となった取付脚７ｃ、８ｃによって、上下方向に幅広の側板７ｂ、８ｂが存在するような状態となって、曲がり（枠体１からの浮き上がり）を少なくできて、枠体１との接触を良好にできる。
【００４１】
更に、根本部が幅広となった取付脚７ｃ、８ｃによって、上下方向に幅広の側板７ｂ、８ｂが存在するような状態となって、側板７ｂ、８ｂの上下方向の幅を小さくできて、小型化に適したものが得られる。
【００４２】
なお、上記実施例では、第１のカバー７の係止部７ｄが掛け止め孔３ａに係止され、第２のカバー８の係止部８ｄが係止孔１ｄに係止したもので説明したが、係止部７ｄが係止孔１ｄに係止されると共に、係止部８ｄが掛け止め孔３ａ、或いは、３ｂに係止されるようにしたものでも良い。
【００４３】
また、係止孔１ｄを無くして、第１のカバー７の係止部７ｄが掛け止め孔３ａに係止され、第２のカバー８の係止部８ｄが掛け止め孔３ｂに係止されるようにしても良い。
【００４４】
このような構成を有する電子機器は、ここでは図示しないが、取付足１ｅがマザー基板に挿通された状態で、取付足１ｅがマザー基板に半田付けされて、電子機器は、マザー基板に対して、伏せ型で取り付けられる。
【００４５】
なお、電子機器は、枠体１の長手方向がマザー基板に対して直立状態となった、縦型の取付状態にしたものでも良い。
【００４６】
【発明の効果】
本発明の電子機器のカバー取付構造は、ロ字状に形成され、両側に開放部を有する金属板からなる枠体と、この枠体内に取り付けられ、端面にサイド電極を設けた回路基板と、枠体の一方の開放部を覆った状態で、枠体に掛け止めされて取り付けられた第１のカバーと、枠体の他方の開放部を覆った状態で、枠体に掛け止めされて取り付けられた第２のカバーとを備え、枠体は、切り曲げされて、サイド電極に接触する接触片と、この接触片に隣接した状態で、接触片の一辺側、又は／及び他辺側に設けられた掛け止め孔を有し、第１，第２のカバーのそれぞれは、開放部を覆う平板状部と、この平板状部から折り曲げられた取付脚と、この取付脚の端部に設けられた係止部を有し、第１，第２のカバーの少なくとも何れか一方の係止部が掛け止め孔に係止された構成とした。
このような構成によって、第１，第２のカバーは、掛け止め孔に係止されるため、その取付が強固で、位置ずれを起こすことがないばかりか、掛け止め孔は、接触片の切り曲げに必要な孔で兼用されるため、枠体を小型化できて、小型の電子機器のカバー取付構造に好適である。
【００４７】
また、第１，第２のカバーの双方の係止部が掛け止め孔に係止されたため、枠体を一層小型化できて、小型の電子機器のカバー取付構造に好適である。
【００４８】
また、枠体には、係止部を係止するための係止孔が設けられ、第１，第２のカバーの何れか一方の係止部が掛け止め孔に係止されると共に、第１，第２のカバーの他方の係止部が係止孔に係止されたため、第１，第２のカバーの係止位置を違えることができ、これによって、第１，第２のカバーの組み込み作業の判別が容易であると共に、第１，第２のカバーの組み込み状態が目視によって容易に判別できる。
【００４９】
また、係止孔は、接触片に並設した状態で形成され、係止孔と掛け止め孔は、互いに平行な異なる直線上に位置して、互いに位置ずれした状態で配置されたため、枠体の強度が強く、変形の少ない枠体が得られる。
【００５０】
また、接触片は、枠体に繋がった連結部と、この連結部の端部に設けられ、サイド電極に接触する当接部を有して、片持ち状に形成されると共に、枠体の接触片の外周部には、掛け止め孔を形成するためのコ字状の孔が設けられたため、接触片の曲げが容易となり、作業性が良く、サイド電極への接触の良好なものが得られる。
【００５１】
また、連結部の幅寸法が当接部の幅寸法よりも小さく形成されたため、接触片の曲げが一層容易となり、作業性が良く、サイド電極への接触の良好なものが得られる。
【００５２】
また、接触片が枠体内側に切り曲げされて、係止部が係止される掛け止め孔を形成したため、掛け止め孔が上下方向に小さくできて、小型化に適すと共に、掛け止め孔への係止部の係止を確実にできる。
【図面の簡単な説明】
【図１】本発明の電子機器のカバー取付構造を示す平面図。
【図２】本発明の電子機器のカバー取付構造に係り、カバーの一部を切り欠いた状態を示す平面図。
【図３】本発明の電子機器のカバー取付構造を示す正面図。
【図４】本発明の電子機器のカバー取付構造に係り、カバーを取り去った状態を示す正面図。
【図５】本発明の電子機器のカバー取付構造を示す側面図。
【図６】本発明の電子機器のカバー取付構造に係り、カバーを取り去った状態を示す側面図。
【図７】図３の７−７線における断面図。
【図８】図３の８−８線における断面図。
【図９】従来の電子機器のカバー取付構造を示す分解斜視図。
【図１０】従来の電子機器のカバー取付構造に係る要部断面図。
【符号の説明】
１枠体
１ａ開放部
１ｂ開放部
１ｃ孔
１ｄ係止孔
１ｅ取付足
２接触片
２ａ連結部
２ｂ当接部
３ａ掛け止め孔
３ｂ掛け止め孔
４回路基板
４ａ端面
４ｂ凹部
５導電パターン
６サイド電極
７第１のカバー（上カバー）
７ａ平板状部
７ｂ側板
７ｃ取付脚
７ｄ係止部
８第２のカバー（下カバー）
８ａ平板状部
８ｂ側板
８ｃ取付脚
８ｄ係止部
Ｓ１〜Ｓ３直線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cover mounting structure for an electronic device suitable for use in a television tuner or the like.
[0002]
[Prior art]
FIG. 9 is an exploded perspective view showing a cover mounting structure of a conventional electronic device, and FIG. 10 is a cross-sectional view of a main part of the cover mounting structure of the conventional electronic device. .
[0003]
Next, the structure of the conventional electronic apparatus cover mounting structure will be described with reference to FIGS. 9 and 10. The frame 51 formed by bending a metal plate into a square shape is opened on both sides. 51a, 51b, a U-shaped hole 51c provided on each of the four sides of the B-shape, and a tongue that is located in the U-shaped hole 51c and is connected to the frame 51 in a cantilever shape It has a piece 51d and a plurality of mounting legs 51e protruding downward from the vicinity of the four corners.
[0004]
The shield plate 52 made of a metal plate has a projecting piece 52a that protrudes downward. The shield plate 52 is disposed in the frame body 51, and the frame body 51 is partitioned into a plurality of compartments. When the shield plate 52 is disposed in the frame 51, the projecting piece 52a is positioned on the tongue piece 51d.
[0005]
The circuit board 53 made of an insulating substrate has a plurality of notches 53a on the outer peripheral edge, and a conductive pattern (not shown) for wiring is provided on the surface. An electronic component 54 is mounted to form a desired electric circuit.
[0006]
The circuit board 53 is accommodated in the frame 51 with the protruding piece 52 a of the shield plate 52 positioned in the notch 53 a, and is attached to the tongue piece 51 d and the protruding piece 52 a and the circuit board 53 by the solder 55. A grounding pattern (not shown) provided is connected and fixed.
[0007]
At this time, the tongue piece 51d grounds the grounding pattern of the circuit board 53 to the frame body 51, and reduces the escape of heat when the solder 55 is attached so as to improve the solder 55 attachment.
[0008]
Each of the first cover (upper cover) 56 and the second cover (lower cover) 57 made of a metal plate has a rectangular flat plate-like portion 56a, 57a and four sides of the plate-like portions 56a, 57a. Side plates 56b and 57b that are bent at right angles from each side, and a plurality of mounting legs 56c and 57c that protrude from the side plates 56b and 57b and have the same width at the root and the tip.
[0009]
The first cover 56 having such a configuration is such that the tip of the mounting leg 56c is elastically contacted with the flat surface of the frame 51 in a state where the open portion 51a of the frame 51 is covered with the flat plate portion 56a. It is attached to the frame 51.
[0010]
At this time, since the mounting leg 56c has the same width at the base part and the tip part, the elastic force at the tip part is weak, and the mounting leg 56c is elastically contacted with the frame 51 in a state where the mounting leg 56c is opened outward. However, since the base portion and the tip portion have the same width, the mounting leg 56c is plastically deformed in an open state because the reaction force of the base portion is weak.
[0011]
In addition, the second cover 57 is configured so that the distal end portion of the mounting leg 57 c is elastically contacted with the flat surface of the frame 51 in a state where the open portion 51 b of the frame 51 is covered with the flat plate portion 57 a. It is attached.
[0012]
At this time, since the mounting leg 57c has the same width at the base part and the tip part, the elastic pressure at the tip part is weak, and the mounting leg 57c is elastically contacted with the frame body 51 with the mounting leg 57c opened outward. However, since the root portion and the tip end portion have the same width, the attachment leg 57c is plastically deformed in an open state because the reaction force of the root portion is weak.
[0013]
Further, when the first and second covers 56 and 57 are attached, the attachment legs 56c and 57c are arranged to face each other with a space in the vertical direction, and thus the frame 51 is arranged in the vertical direction. It becomes large and becomes large. (For example, see Patent Document 1)
[0014]
In the conventional electronic device cover mounting structure having such a configuration, the mounting legs 56c and 57c of the first and second covers 56 and 57 elastically contact the flat surface of the frame 51, so that vibrations and shocks are generated. As a result, the first and second covers 56 and 57 are displaced.
Further, when the first and second covers 56 and 57 are attached, the attachment legs 56c and 57c are arranged to face each other with a space in the vertical direction, and thus the frame 51 is arranged in the vertical direction. It becomes large and becomes large.
[0015]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-9469 [0016]
[Problems to be solved by the invention]
In the conventional electronic device cover mounting structure, the mounting legs 56c and 57c of the first and second covers 56 and 57 are in elastic contact with the flat surface of the frame 51. There is a problem that the second covers 56 and 57 are displaced.
Further, when the first and second covers 56 and 57 are attached, the attachment legs 56c and 57c are arranged to face each other with a space in the vertical direction, and thus the frame 51 is arranged in the vertical direction. There is a problem of becoming larger and larger.
[0017]
SUMMARY OF THE INVENTION An object of the present invention is to provide a cover mounting structure for an electronic device that is free from positional displacement of the cover, has a strong frame, and is suitable for downsizing.
[0018]
[Means for Solving the Problems]
As a first solving means for solving the above problems, a frame formed of a metal plate having a square shape and having open portions on both sides, and a circuit attached to the inside of the frame and provided with a side electrode on the end face In the state of covering the substrate, the first open part of the frame body, the first cover that is hooked and attached to the frame body, and the other open part of the frame body, A second cover attached to the frame body, the contact body being cut and bent to contact the side electrode, and the contact piece in a state adjacent to the contact piece. Each of the first and second covers has a flat plate-like portion covering the open portion, and is bent from the flat plate-like portion. Mounting leg and a locking portion provided at the end of the mounting leg. The contact piece is connected to the circuit board such that at least one of the locking portions of the first and second covers is locked to the latch hole, and a side surface of the contact piece is in contact with the side electrode. The latch hole is formed by being cut and bent inward of the frame body in a direction parallel to the hook, and the latch portion is latched .
[0019]
As a second solving means, the locking portions of both the first and second covers are locked in the hooking holes.
Further, as a third solving means, the frame body is provided with a locking hole for locking the locking portion, and the locking portion of any one of the first and second covers is provided. While being latched by the latching hole, the other latching part of the first and second covers was latched by the latching hole.
[0020]
Further, as a fourth solving means, the locking holes are formed in parallel with the contact pieces, and the locking holes and the latching holes are located on different straight lines parallel to each other. It was set as the structure arrange | positioned in the state which shifted | deviated.
[0021]
Further, as a fifth solving means, the contact piece has a connecting portion connected to the frame body and an abutting portion provided at an end of the connecting portion and contacting the side electrode, and is cantilevered. And a U-shaped hole for forming the retaining hole is provided on the outer peripheral portion of the contact piece of the frame.
[0022]
Further, as a sixth solving means, the width of the connecting portion is formed to be smaller than the width of the contact portion .
[0023]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view showing a cover mounting structure for an electronic device according to the present invention, and FIG. 2 relates to the cover mounting structure for the electronic device according to the present invention. FIG. 3 is a front view showing a cover mounting structure for an electronic device according to the present invention, and FIG. 4 is a cover mounting structure for the electronic device according to the present invention, showing a state in which the cover is removed. It is a front view.
[0024]
5 is a side view showing the cover mounting structure of the electronic device of the present invention, FIG. 6 is a side view showing the state of removing the cover according to the cover mounting structure of the electronic device of the present invention, and FIG. 7 is a sectional view taken along line 7-7, and FIG. 8 is a sectional view taken along line 8-8 in FIG.
[0025]
Next, the structure of the cover mounting structure for an electronic device according to the present invention will be described with reference to FIGS. 1 to 8. The frame body 1 formed by bending a metal plate into a square shape is provided on both sides. Open portions 1a, 1b, U-shaped holes 1c provided on each of the four sides of the square, and the U-shaped holes 1c are connected to the frame 1 and formed in a cantilever shape. It has a contact piece 2, a locking hole 1d formed in parallel with the contact piece 2, and a plurality of mounting feet 1e protruding downward from the vicinity of the four corners.
[0026]
The contact piece 2 includes a narrow connecting portion 2a connected to the frame body 1 and an end portion of the connecting portion 2a. The contact piece 2 includes a contact portion 2b having a width dimension larger than that of the connecting portion 2a. The hole 1c in the shape of the contact piece 2 is located on one side of the contact piece 2 and is formed on a part of the hole 1c, and the latch hole 3a is located on the other side of the contact piece 2 and is formed on a part of the hole 1c. There is a retaining hole 3b.
[0027]
The locking hole 1d is provided at the center of the frame 1 rather than the latching holes 3a and 3b, and the latching holes 3a and 3b and the latching hole 1d are different from each other as shown in FIG. Located on the straight lines S1, S2, S3, they are arranged in a mutually displaced state.
[0028]
In the above embodiment, the description has been given of the case where the two retaining holes 3a and 3b are provided. However, only one of the retaining holes 3a and 3b may be provided.
Further, the contact piece 2 has been described as being cantilevered, but a double-sided contact piece may be used.
[0029]
A circuit board 4 made of a ceramic substrate or the like has a conductive pattern 5 for wiring provided on both sides or one side, and a side electrode 6 for grounding provided in a recess 4b of the end face 4a. A variety of electronic components 7 are mounted to form a desired electric circuit.
[0030]
The circuit board 4 is attached to the frame body 1 by appropriate means while being located in the frame body 1, and when the circuit board 4 is attached, the concave portion 4 b of the circuit board 4 faces the contact piece 2. The end face 4a faces the locking hole 1d.
[0031]
When the contact piece 2 is pressed from the outside of the frame 1 toward the inside of the frame 1 and the connecting portion 2a is bent, the contact portion 2b is in contact with the side electrode 6. The side electrode 6 is grounded to the frame 1.
That is, the contact piece 2 comes into contact with the side electrode 6 in a cut and bent state.
In addition, although not shown here, the contact portion 2b and the side electrode 6 are soldered so that the two are reliably conducted.
[0032]
Each of the first cover (upper cover) 7 and the second cover (lower cover) 8 made of a metal plate includes a rectangular flat plate-like portion 7a, 8a and four sides of the flat plate-like portion 7a, 8a. Side plates 7b and 8b bent at a right angle, a plurality of mounting legs 7c and 8c extending with the root portions connected to the side plates 7b and 8b, and a rectangular-shaped engagement provided at one end of the mounting legs 7c and 8c. Stop portions 7d and 8d are provided.
[0033]
The mounting legs 7c and 8c are formed so as to gradually become wider from the locking portions 7d and 8d toward the side plates 7b and 8b or the flat plate-like portions 7a and 8a. 7c and 8c are gradually widened on both sides, and are formed in a C shape (wedge shape).
[0034]
In this embodiment, the mounting legs 7c and 8c are formed in a C shape. However, only one side of the mounting legs 7c and 8c may be gradually widened. The base portion of the legs 7c and 8c may be directly connected to the flat plate portions 7a and 8a.
[0035]
The first cover 7 having such a structure is configured such that the locking portion 7d is locked to the latching hole 3a in a state where the open portion 1a of the frame 1 is covered with the flat plate-like portion 7a. It is attached.
[0036]
At this time, until the engaging portion 7d is fitted into the latching hole 3a, the mounting leg 7c is in an open state, but the mounting leg 7c gradually increases in width as it moves away from the engaging portion 7d. Therefore, the attachment leg 7c is returned from the opened state, and the locking portion 7d is fitted into the latching hole 3a.
That is, the mounting leg 7c is reliably returned to the original state before opening without being plastically deformed in the opened state, and the locking portion 7d is strongly locked in the latching hole 3a.
[0037]
In the above-described embodiment, the locking portion 7d is locked to the latching hole 3a. However, the locking portion 7d may be locked to the latching hole 3b.
Moreover, the latching hole 3a may be configured by a hole when the contact piece 2 is cut and bent toward the inside of the frame 1.
[0038]
The second cover 8 is attached to the frame 1 with the locking portion 8d locked in the locking hole 1d in a state where the open portion 1b of the frame 1 is covered with the flat plate portion 8a.
At this time, until the engaging portion 8d is fitted into the engaging hole 1d, the mounting leg 8c is in a state of opening outward, but the mounting leg 8c gradually increases in width as it moves away from the engaging portion 8d. Therefore, the mounting leg 8c is returned from the opened state, and the locking portion 8d is fitted into the locking hole 1d.
[0039]
That is, the mounting leg 8c is reliably returned to the original state before opening without being plastically deformed in the opened state, and the locking portion 8d is firmly locked in the locking hole 1d.
[0040]
Further, as shown in FIG. 3, since the base plates 7b and 8b of the first and second covers 7 and 8 are provided with two or more mounting legs 7c and 8c whose base portions are wide, Side plates 7b between adjacent mounting legs 7c or side plates 8b between mounting legs 8c have side plates 7b and 8b which are wide in the vertical direction due to mounting legs 7c and 8c having a wide base portion. In this state, bending (lifting from the frame body 1) can be reduced, and contact with the frame body 1 can be improved.
[0041]
Further, the mounting legs 7c and 8c having the wide base portion make the side plates 7b and 8b wide in the vertical direction, so that the vertical widths of the side plates 7b and 8b can be reduced, and the size is reduced. The one suitable for conversion is obtained.
[0042]
In the above embodiment, the description has been given on the assumption that the locking portion 7d of the first cover 7 is locked to the locking hole 3a, and the locking portion 8d of the second cover 8 is locked to the locking hole 1d. However, the engaging portion 7d may be engaged with the engaging hole 1d and the engaging portion 8d may be engaged with the engaging hole 3a or 3b.
[0043]
Further, without the locking hole 1d, the locking part 7d of the first cover 7 is locked to the latching hole 3a, and the locking part 8d of the second cover 8 is locked to the latching hole 3b. You may do it.
[0044]
Although the electronic device having such a configuration is not shown here, the attachment feet 1e are soldered to the mother substrate in a state where the attachment feet 1e are inserted through the mother substrate, and the electronic device is attached to the mother substrate. Mounted with a face down mold.
[0045]
Note that the electronic device may be a vertically mounted state in which the longitudinal direction of the frame 1 is upright with respect to the mother board.
[0046]
【The invention's effect】
A cover mounting structure for an electronic device according to the present invention includes a frame formed of a metal plate that is formed in a square shape and has open portions on both sides, and a circuit board that is mounted in the frame and has a side electrode on an end surface. A first cover that is hooked and attached to the frame while covering one open part of the frame, and a hook that is hooked and attached to the frame while covering the other open part of the frame And the frame is cut and bent to contact the side electrode, and adjacent to the contact piece, on one side of the contact piece and / or on the other side Each of the first and second covers has a flat plate portion covering the open portion, a mounting leg bent from the flat plate portion, and an end portion of the mounting leg. And at least one of the first and second covers is hooked. It was locked configuration to stop the hole.
With such a configuration, the first and second covers are locked to the latch holes, so that the attachment is strong and the position does not shift. Since it is also used as a hole necessary for bending, the frame can be miniaturized and is suitable for a cover mounting structure for a small electronic device.
[0047]
In addition, since both the locking portions of the first and second covers are locked in the latch holes, the frame can be further reduced in size, which is suitable for a cover mounting structure for a small electronic device.
[0048]
The frame body is provided with a locking hole for locking the locking portion, and one of the locking portions of the first and second covers is locked to the locking hole, Since the other locking portions of the first and second covers are locked in the locking holes, the locking positions of the first and second covers can be changed. Assembling work is easily discriminated, and the assembling states of the first and second covers can be easily discriminated visually.
[0049]
In addition, the locking hole is formed in a state of being arranged in parallel with the contact piece, and the locking hole and the latching hole are located on different straight lines parallel to each other and are arranged in a mutually displaced state, so that the frame body A frame body with high strength and less deformation is obtained.
[0050]
In addition, the contact piece is formed in a cantilever shape having a connecting portion connected to the frame body and an abutting portion provided at an end portion of the connecting portion and contacting the side electrode. The outer periphery of the contact piece is provided with a U-shaped hole for forming a retaining hole, so that the contact piece can be easily bent, workability is improved, and a contact with the side electrode is obtained. It is done.
[0051]
Further, since the width dimension of the connecting portion is smaller than the width dimension of the contact portion, the contact piece can be bent more easily, the workability is improved, and the contact with the side electrode is obtained.
[0052]
In addition, the contact piece is cut and bent to the inside of the frame to form a latching hole for latching the latching portion, so that the latching hole can be made small in the vertical direction, which is suitable for downsizing and to the latching hole. The locking portion can be securely locked.
[Brief description of the drawings]
FIG. 1 is a plan view showing a cover mounting structure for an electronic apparatus according to the invention.
FIG. 2 is a plan view showing a state in which a part of the cover is cut away, according to the cover mounting structure of the electronic apparatus of the present invention.
FIG. 3 is a front view showing a cover mounting structure for an electronic apparatus according to the invention.
FIG. 4 is a front view showing a state where the cover is removed in the electronic apparatus cover mounting structure according to the present invention.
FIG. 5 is a side view showing a cover mounting structure for an electronic apparatus according to the invention.
FIG. 6 is a side view showing a state where the cover is removed in the electronic apparatus cover mounting structure according to the present invention.
7 is a cross-sectional view taken along line 7-7 in FIG.
8 is a cross-sectional view taken along line 8-8 in FIG.
FIG. 9 is an exploded perspective view showing a cover mounting structure of a conventional electronic device.
FIG. 10 is a cross-sectional view of a main part according to a cover mounting structure of a conventional electronic device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame 1a Opening part 1b Opening part 1c Hole 1d Locking hole 1e Mounting leg 2 Contact piece 2a Connection part 2b Contacting part 3a Locking hole 3b Locking hole 4 Circuit board 4a End surface 4b Recessed part 5 Conductive pattern 6 Side electrode 7 First cover (upper cover)
7a Flat portion 7b Side plate 7c Mounting leg 7d Locking portion 8 Second cover (lower cover)
8a Flat part 8b Side plate 8c Mounting leg 8d Locking part S1-S3 Straight line

Claims

A frame made of a metal plate formed in a square shape and having open portions on both sides, a circuit board attached to the inside of the frame and provided with a side electrode on the end surface, and one of the first open portions of the frame covered. A first cover that is hooked and attached to the frame body, and a second cover that is hooked and attached to the frame body in a state of covering the other open portion of the frame body. The frame body is cut and bent to be in contact with the side electrode, and provided on one side of the contact piece and / or on the other side in a state adjacent to the contact piece. Each of the first and second covers has a latch hole, and is provided at a flat plate portion covering the open portion, an attachment leg bent from the flat plate portion, and an end portion of the attachment leg. At least one of the first and second covers A cover mounting structure for an electronic device in which the locking portion is locked in the latching hole , wherein the contact piece is parallel to the circuit board so that a side surface of the contact piece is in contact with the side electrode. A cover mounting structure for an electronic device , wherein the latching hole is formed by being cut and bent to the inside of the frame to lock the locking portion .

2. The cover mounting structure for an electronic device according to claim 1, wherein the locking portions of both the first and second covers are locked in the locking holes.

The frame body is provided with a locking hole for locking the locking portion, and one of the locking portions of the first and second covers is locked in the locking hole. The electronic device cover mounting structure according to claim 1, wherein the other locking portion of the first and second covers is locked in the locking hole.

The locking hole is formed in a state of being provided side by side with the contact piece, and the locking hole and the latching hole are located on different straight lines parallel to each other, and are arranged in a mutually displaced state. The cover mounting structure for an electronic device according to claim 3, wherein:

The contact piece is formed in a cantilever shape having a connecting portion connected to the frame body and an abutting portion provided at an end portion of the connecting portion and in contact with the side electrode. 5. The electronic apparatus cover mounting according to claim 1, wherein a U-shaped hole for forming the retaining hole is provided in an outer peripheral portion of the contact piece of the body. Construction.

6. The cover mounting structure for an electronic device according to claim 5, wherein a width dimension of the connecting portion is smaller than a width dimension of the contact portion.