JP4106279B2

JP4106279B2 - High frequency unit and its mounting structure

Info

Publication number: JP4106279B2
Application number: JP2003006362A
Authority: JP
Inventors: 聖飯牟礼
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 2003-01-14
Filing date: 2003-01-14
Publication date: 2008-06-25
Anticipated expiration: 2023-01-14
Also published as: CN1259810C; CN1525807A; JP2004221283A

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高周波ユニット、及びその取付構造に関する。
【０００２】
【従来の技術】
従来の高周波ユニットの構成を図７に基づいて説明すると、金属板からなるロ字状の枠体５１は、長方形状の前面板５２と、前面板５２の上方の短辺側にカシメ付けられて、後方側に延びた上面板５３と、前面板５２の下方の短辺側にカシメ付けられて、後方側に延びた下面板５４と、上、下面板５３，５４の後方側を結合する後面板５５を有する。
【０００３】
また、枠体５１は、前面板５２の下方の短辺側から下方に延びる取付脚５２ａと、後面板５５の下方の短辺側から下方に延びる取付脚５５ａが設けられると共に、枠体５１の左右側が開放された状態となっている。
【０００４】
プリント基板からなる回路基板５６は、種々の電気部品（図示せず）が搭載されて構成され、この回路基板５６は、枠体５１内に収納された状態で、適宜手段によって枠体５１に取り付けられている。
【０００５】
同軸型コネクタ５７は、外部導体５８と、この外部導体５８内に配置された内部導体５９とを有し、この同軸型コネクタ５７は、外部導体５８が前面板５２に固着されると共に、内部導体５９が前面板５２の孔（図示せず）を通って回路基板５６に接続された構成となっている。（例えば、特許文献１参照）
【０００６】
このような構成を有する高周波ユニットの取付構造は、図７に示すように、下面板５４側がプリント基板からなるマザー基板６０に対向して配置し、前、後面板５２，５５の取付脚５２ａ、５５ａがマザー基板６０の孔（図示せず）に挿通された状態で、取付脚５２ａ、５５ａがマザー基板６０に半田付けする等して取り付けられるようになっている。
【０００７】
しかし、近年、電子機器の薄型化や軽量化が要求され、図７に示すように、マザー基板６０に対して、枠体５１の長手方向が直立状態で取り付けられるものあっては、薄型化が図れず、また、前面板５２の大きさからなる直方体の枠体５１では、材料が多くなって軽量化が図れないばかりか、取付脚５２ａ、５５ａが前、後面板５２，５５の端部から下方に突出するため、材料取りが悪く、コスト高になるものであった。
【０００８】
【特許文献１】
特開２０００−２８６５６７号公報
【０００９】
【発明が解決しようとする課題】
従来の高周波ユニットは、枠体５１が前面板５２の大きさからなる直方体で形成されるため、大型となって、軽量化が図れず、且つ、材料費が多くなって、コスト高になるという問題がある。
また、取付脚５２ａ、５５ａが前、後面板５２，５５の端部から下方に突出するため、材料取りが悪く、コスト高になるという問題がある。
また、高周波ユニットの取付構造に際しては、マザー基板６０に対して、枠体５１の長手方向が直立状態で取り付けられるため、薄型化が図れ無いという問題がある。
【００１０】
そこで、本発明は小型で、薄型化と軽量化が図れると共に、材料取りが良く、安価な高周波ユニット、及びその取付構造を提供することを目的とする。
【0011】
【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、回路基板を収納した金属板からなる枠体と、この枠体の前面板に取り付けられた同軸型コネクタとを備え、プリント基板からなるマザー基板に取り付けられる高周波ユニットであって、前記枠体は、長方形状の前記前面板と、前記前面板の短辺側から後方に延びる一対の側面板と、この一対の側面板の後方側を塞ぐ後面板を有すると共に、前記同軸型コネクタは外部導体と、この外部導体内に配置された内部導体とを有し、この同軸型コネクタは、前記外部導体が前記前面板に固着されると共に、前記内部導体が前記前面板に設けられた孔を通って前記回路基板に接続され、前記一対の側面板は、前記前面板の高さ方向の幅より細幅で、前記前面板の上縁、或いは下縁に対して段差を持って後方端部にわたって形成された細幅部と、この細幅部の一側縁から前記段差方向に延びる取付脚を有し、前記マザー基板が前記一対の側面板に設けられた前記段差内に配置可能である構成とした。
【００１２】
また、第２の解決手段として、前記一対の側面板は、前記前面板に結合され、前記前面板と高さ方向にほぼ同じ幅を有する広幅部と、この広幅部から前記段差を持って形成された前記細幅部を有する構成とした。
また、第３の解決手段として、前記一対の側面板に設けられた前記段差は、前記枠体の上方側、或いは下方側の何れか一方に設けられた構成とした。
【００１３】
また、第４の解決手段として、前記細幅部の前記段差に位置する前記一側縁は、前記枠体の上方側、或いは下方側に位置する前記同軸型コネクタの外周部よりも前記同軸型コネクタの中心側に位置した構成とした。また、第５の解決手段として、前記細幅部の前記段差に位置する前記一側縁は、前記枠体の上方側、或いは下方側に位置する前記同軸型コネクタの前記筒状の外部導体の外周部よりも前記同軸型コネクタの中心側に位置した構成とした。
【００１４】
また、第６の解決手段として、前記枠体は、前記前面板、前記一対の側面板、及び前記後面板が連結部で連結された一枚の金属板で構成された。
また、第７の解決手段として、前記枠体は、前記一対の側面板間を繋ぐ桟部からなる第１の連結部と、この第１の連結部に繋がって前方に延びる第２の連結部と、この第２の連結部に繋がれた前記前面板を有し、前記前面板の短辺側には、前記一対の側面板が結合された構成とした。
【００１５】
また、第８の解決手段として、前記枠体は、上方側、或いは下方側において、前記前面板と前記一対の側面板の角部を繋ぐ連結部が設けられた構成とした。
【００１６】
また、第９の解決手段として、請求項１から８の何れかに記載の高周波ユニットと、この高周波ユニットを取り付けるプリント基板からなるマザー基板とを備え、前記マザー基板が前記一対の側面板に設けられた前記段差内に配置された状態で、前記取付脚が前記マザー基板に取り付けられた取付構造とした。
【００１７】
【発明の実施の形態】
本発明の高周波ユニット、及びその取付構造の図面を説明すると、図１は本発明の高周波ユニットの第１実施例を示す正面図、図２は本発明の高周波ユニットの第１実施例、及びその取付構造を示す側面図、図３は本発明の高周波ユニットの第１実施例に係り、枠体を裏返した状態の斜視図、図４は本発明の高周波ユニットの第１実施例に係る枠体の製造方法を示す説明図である。
【００１８】
また、図５は本発明の高周波ユニットの第２実施例に係る枠体の斜視図、図６は本発明の高周波ユニットの第２実施例に係る枠体の製造方法を示す説明図である。
【００１９】
本発明の高周波ユニットの構成を図１〜図３に基づいて説明すると、一枚の金属板からなるロ字状の枠体１は、特に図３に示すように、長方形状の前面板２と、前面板２の両側に位置する短辺側から後方側に延びた一対の側面板３と、一対の側面板３の後方側を塞ぐ後面板４を有し、枠体１の上方側と下方側は、開放された状態となっている。
【００２０】
また、一対の側面板３は、前面板２の高さ方向の幅とほぼ同じ幅からなり、前面板２と繋がった広幅部３ａと、広幅部３ａから高さ方向に段差３ｂを持って、後方端部にわたって形成された細幅部３ｃと、この細幅部３ｃの一側縁３ｄから段差３ｂ方向に延びて形成された複数個の取付脚３eを有する。そして、この取付脚３ｅは、段差３ｂの高さと同じか、或いは、段差３ｂより低く、段差３ｂ内に位置して設けられている。
【００２１】
即ち、図３は枠体１を裏返した状態を示している関係で、段差３ｂが上方に位置しているが、図２に示すように、段差３ｂは、枠体１の下方側に形成されると共に、取付脚３ｅの根本である細幅部３ｃの一側縁３ｄは、前面板２の下縁２ａよりも枠体１の中央側に位置した状態となっている。
【００２２】
なお、この実施例では、段差３ｂが枠体１の下方側に設けられたもので説明したが、段差３ｂが枠体１の上方側に設けられたものでも良く、また、広幅部３ａが削除され、前面板２より細幅の細幅部３ｃが前面板２から後方端部にわたって設けられたものでも良い。
【００２３】
また、後面板４は、側面板３の細幅部３ｃと同じ幅で形成されると共に、その一側縁４ａから段差３ｂ方向に延びる複数個の取付脚４ｂを有し、この取付脚４ｂは、段差３ｂの高さと同じか、或いは、段差３ｂより低く、段差３ｂ内に位置して設けられている。
更に、前面板２には、孔２ｂが設けられると共に、一対の側面板３間には、両側面板３を繋ぐ桟部からなる複数個の第１の連結部５が設けられている。
【００２４】
また、前方に位置する第１の連結部５には、これに繋がって前方に延びる第２の連結部６が設けられると共に、この第２の連結部６には、前面板２が繋がって設けられている。
そして、前面板２と側面板３の端部同士は、組立前では互いに離れた状態にあって、組立時において、前面板２と側面板３の端部同士がカシメ等によって結合されている。
【００２５】
また、側面板３の細幅部３ｃと後面板４の角部には、両者を繋ぐ第３の連結部７が設けられると共に、前記第１，第２の連結部５，６には、折り曲げられて、枠体１内を区画するシールド部８と、このシールド部８から突出する複数個の突片９を有している。
【００２６】
次に、このような構成を有する枠体１の製造方法を図４に基づいて説明すると、先ず、フープ状の金属板が打ち抜き加工されて、図４示すような展開図からなる枠体１が形成される。
【００２７】
即ち、広幅部３ａ、及び広幅部３ａから段差３ｂを持って設けられ、広幅部３ａの幅内に取付脚３ｅを備えた細幅部３ｃを有する一対の側面板３と、一対の側面板３間を繋ぐ桟部からなる複数個の第１の連結部５と、前方に位置する第１の連結部５に繋がって設けられた第２の連結部６と、孔２ｂを有し、第２の連結部６に繋がって設けられた前面板２と、角部が第３の連結部７によって一対の側面板３に繋がり、広幅部３ａの幅寸法内に取付脚４ｂを備えた後面板４と、第１，第２の連結部５，６に繋がって設けられたシールド部８と、シールド部８の端部に設けられた突片９が形成された状態となっている。
【００２８】
次に、折り曲げ線Ｓ１に沿って、第１の連結部５を下方に折り曲げて、一つのシールド部８を形成すると共に、折り曲げ線Ｓ２に沿って、シールド部８を下方に折り曲げて、複数個のシールド部８を形成する。
【００２９】
次に、折り曲げ線Ｓ３に沿って、第２の連結部６を上方に折り曲げると共に、折り曲げ線Ｓ４に沿って、第２の連結部６を水平状態に折り曲げた後、折り曲げ線Ｓ５に沿って、一対の側面板３を下方に折り曲げる。
【００３０】
しかる後、折り曲げ線Ｓ６、及びＳ７に沿って、それぞれ前面板２，及び後面板４を下方に折り曲げて、前面板２，及び後面板４の端部を一対の側面板３の端部に合わせ、その合わせ部をカシメ等によって結合すると、枠体１の製造が完了し、図３で示すような枠体１が製造される。
【００３１】
なお、この実施例の枠体１は、前面板２，一対の側面板３，及び後面板４が繋がった一枚の金属板で構成されたもので説明したが、複数枚の金属板で枠体１を構成しても良い。
また、取付脚は、側面板３のみに設けても良い。
【００３２】
プリント基板からなる回路基板１０は、種々の電気部品（図示せず）が搭載されて、所望の電気回路が構成され、この回路基板１０は、枠体１内に収納された状態で、適宜手段によって枠体１に取り付けられている。
そして、この実施例における回路基板１０の取付構造は、回路基板１０の下面がシールド部８上に載置された状態で、突片９が回路基板１０の孔（図示せず）に挿通され、突片９が回路基板１０に半田付けされることによって、回路基板１０が枠体１に取り付けられている。
【００３３】
２個の同軸型コネクタ１１のそれぞれは、外部にネジ部１２ａを有する筒状の外部導体１２と、この外部導体１２の端部に設けられた鍔部１２ｂと、外部導体１１内に絶縁材（図示せず）を介して配置された内部導体１３とで構成されている。
【００３４】
この同軸型コネクタ１１は、鍔部１２ｂを前面板２に当接すると共に、外部導体１２の一部を孔２ｂに挿入した状態で、外部導体１２の一部をカシメて、前面板２に固着される。
そして、同軸型コネクタ１１の内部導体１３は、回路基板１０に半田付けされて、電気回路に接続されている。
【００３５】
また、同軸型コネクタ１１が前面板２に取り付けられた際、細幅部３ｃの段差３ｂに位置する一側縁３ｄは、枠体１の下方側に位置する同軸型コネクタ１１の外周部（鍔部１２ｂの下端）よりも同軸型コネクタ１１の中心側で、且つ、筒状の外部導体１２の外周部（ネジ部１２ａの下端）よりも同軸型コネクタ１１の中心側に位置した状態となっている。
【００３６】
金属板からなる第１のカバー１４は、枠体１の上方の開放部を覆うように枠体１に取り付けられると共に、金属板からなる第２のカバー１５は、枠体１の下方の開放部を覆うように枠体１に取り付けられる。
そして、取付脚３ｅ、４ｂは、第２のカバー１５を貫通して、段差３ｂ方向に突出している。
【００３７】
このような構成を有する高周波ユニットの取付構造は、図２に示すように、プリント基板からなるマザー基板１６が枠体１の段差３ｂ内に配置されると共に、段差３ｂ方向に突出する取付脚３ｅ、４ｂがマザー基板１６の孔（図示せず）に挿通された状態で、取付脚３ｅ、４ｂがマザー基板１６に半田付けする等して取り付けられるようになっている。
【００３８】
そして近年、電子機器の薄型化や軽量化が要求されているが、図２に示すように、枠体１の長手方向がマザー基板１６に平行な状態で取り付けられ、且つ、マザー基板１６が枠体１の段差３ｂ内に位置するようにしたため、一層の薄型化が図れる。
【００３９】
また、枠体１は、一対の側面板３の広幅部３ａ間で形成される第１の直方体状部と、細幅部３ｃ間で形成される第２の直方体状部とからなるため、枠体１が従来に比して小型化されると共に、材料が少なくなって、軽量化が図れる。
また、取付脚３ｅ、４ｂが段差３ｂ方向に突出して設けられたため、取付脚３ｅ、４ｂが広幅部３ａから下方に突出することなく形成（広幅部３ａの幅内で形成）できて、材料取りが良く、安価なものが得られる。
【００４０】
また、図５，図６は本発明の高周波ユニットの第２実施例を示し、この第２実施例における枠体１の構成を図５に基づいて説明すると、この枠体１は、前面板２と一対の側面板３の角部には、前面板２と側面板３を繋ぐ第４の連結部Ｒ１が設けられたものである。
【００４１】
その他の構成は、上記第１実施例とほぼ同様であるので、同一部品に同一番号を付し、ここではその説明を省略する。
【００４２】
次に、このような構成を有する枠体１の製造方法を図６に基づいて説明すると、先ず、フープ状の金属板が打ち抜き加工されて、図６示すような展開図からなる枠体１が形成される。
【００４３】
即ち、広幅部３ａ、及び広幅部３ａから段差３ｂを持って設けられ、広幅部３ａの幅内に取付脚３ｅを備えた細幅部３ｃを有する一対の側面板３と、一対の側面板３間を繋ぐ桟部からなる複数個の第１の連結部５と、前方に位置する第１の連結部５に繋がって設けられた第２の連結部６と、孔２ｂを有し、第２の連結部６に繋がって設けられた前面板２と、角部が第３の連結部７によって一対の側面板３に繋がり、広幅部３ａの幅寸法内に取付脚４ｂを備えた後面板４と、第１，第２の連結部５，６に繋がって設けられたシールド部８と、シールド部８の端部に設けられた突片９が形成された状態となっている。
【００４４】
次に、折り曲げ線Ｓ１に沿って、第１の連結部５を下方に折り曲げて、一つのシールド部８を形成すると共に、折り曲げ線Ｓ２に沿って、シールド部８を下方に折り曲げて、複数個のシールド部８を形成する。
【００４５】
次に、折り曲げ線Ｓ５に沿って、一対の側面板３を下方に折り曲げた後、折り曲げ線Ｓ６、及びＳ７に沿って、それぞれ前面板２，及び後面板４を下方に折り曲げて、前面板２，及び後面板４の端部を一対の側面板３の端部に合わせ、その合わせ部をカシメ等によって結合すると、枠体１の製造が完了する。
【００４６】
そして、このような構成を有する枠体１を使用して、図１，図２に示すような高周波ユニットが製造されると共に、第１実施例と同様に、マザー基板１６への取付が行われるようになっている。
【００４７】
【発明の効果】
本発明の高周波ユニットは、回路基板を収納した金属板からなる枠体と、この枠体の前面板に取り付けられた同軸型コネクタとを備え、枠体は、長方形状の前面板と、前面板の短辺側から後方に延びる一対の側面板と、この一対の側面板の後方側を塞ぐ後面板を有すると共に、一対の側面板は、前面板の高さ方向の幅より細幅で、前面板の上縁、或いは下縁に対して段差を持って後方端部にわたって形成された細幅部と、この細幅部の一側縁から段差方向に延びる取付脚を有する構成とした。
このような構成によって、枠体は、前面板の大きさより小さい一対の側面板の細幅部間で形成される直方体状部となり、枠体が従来に比して小型化されると共に、材料が少なくなって、軽量化が図れる。
また、取付脚が段差方向に突出して設けられたため、取付脚が段差内に形成できて、材料取りが良く、安価なものものが得られる。
【００４８】
また、一対の側面板は、前面板に結合され、前面板と高さ方向にほぼ同じ幅を有する広幅部と、この広幅部から段差を持って形成された細幅部を有するため、前面板と一対の側面板との間の結合を確実で、強固にできて、強固な枠体が得られる。
【００４９】
また、一対の側面板に設けられた段差は、枠体の上方側、或いは下方側の何れか一方に設けられたため、枠体内の収容積の縮小を抑えることができる。
【００５０】
また、細幅部の段差に位置する一側縁は、枠体の上方側、或いは下方側に位置する同軸型コネクタの外周部よりも同軸型コネクタの中心側に位置したため、前面板の高さを極力小さくできると共に、細幅部における高さを小さくできる。
【００５１】
また、同軸型コネクタは、筒状の外部導体と、この外部導体内に配置された内部導体とを有し、細幅部の段差に位置する一側縁は、枠体の上方側、或いは下方側に位置する同軸型コネクタの筒状の外部導体の外周部よりも同軸型コネクタの中心側に位置したため、前面板の高さを極力小さくできると共に、細幅部における高さを一層小さくできる。
【００５２】
また、枠体は、前面板、一対の側面板、及び後面板が連結部で連結された一枚の金属板で構成されたため、材料が少なく、且つ、組立が自動化できて、安価なものが得られる。
【００５３】
また、枠体は、一対の側面板間を繋ぐ桟部からなる第１の連結部と、この第１の連結部に繋がって前方に延びる第２の連結部と、この第２の連結部に繋がれた前面板を有し、前面板の短辺側には、一対の側面板が結合されたため、前面板と一対の側面板との結合が一対の側面板間の幅内で行うことができて、材料取りが良く、安価なものが得られる。
【００５４】
また、枠体は、上方側、或いは下方側において、前面板と一対の側面板の角部を繋ぐ連結部が設けられたため、前面板と一対の側面板との結合が一対の側面板間の幅内で行うことができて、材料取りが良く、安価なものが得られる。
【００５５】
また、高周波ユニットと、この高周波ユニットを取り付けるプリント基板からなるマザー基板とを備え、マザー基板が一対の側面板に設けられた段差内に配置された状態で、取付脚がマザー基板に取り付けられたため、枠体の長手方向がマザー基板に平行な状態で取り付けられ、且つ、マザー基板が枠体の段差内に位置するようにしたため、一層の薄型化の図れる取付構造が提供できる。
【図面の簡単な説明】
【図１】本発明の高周波ユニットの第１実施例を示す正面図。
【図２】本発明の高周波ユニットの第１実施例、及びその取付構造を示す側面図。
【図３】本発明の高周波ユニットの第１実施例に係り、枠体を裏返した状態の斜視図。
【図４】本発明の高周波ユニットの第１実施例に係る枠体の製造方法を示す説明図。
【図５】本発明の高周波ユニットの第２実施例に係る枠体の斜視図。
【図６】本発明の高周波ユニットの第２実施例に係る枠体の製造方法を示す説明図。
【図７】従来の高周波ユニット、及びその取付構造を示す斜視図。
【符号の説明】
１枠体
２前面板
２ａ下縁
２ｂ孔
３側面板
３ａ広幅部
３ｂ段差
３ｃ細幅部
３ｄ一側縁
３ｅ取付脚
４後面板
４ａ一側縁
４ｂ取付脚
５第１の連結部
６第２の連結部
７第３の連結部
Ｒ１第４の連結部
８シールド部
９突片
１０回路基板
１１同軸型コネクタ
１２外部導体
１２ａネジ部
１２ｂ鍔部
１３内部導体
１４第１のカバー
１５第２のカバー
１６マザー基板
Ｓ１〜Ｓ７折り曲げ線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-frequency unit suitable for use in a TV tuner and the like, and an attachment structure thereof.
[0002]
[Prior art]
The configuration of a conventional high-frequency unit will be described with reference to FIG. 7. A rectangular frame 51 made of a metal plate is crimped to a rectangular front plate 52 and a short side above the front plate 52. After the upper surface plate 53 extending to the rear side, the lower surface plate 54 being caulked to the short side below the front plate 52 and extending to the rear side, and the rear side of the upper and lower surface plates 53, 54 are joined together A face plate 55 is provided.
[0003]
The frame body 51 is provided with mounting legs 52 a extending downward from the lower short side of the front plate 52 and mounting legs 55 a extending downward from the lower short side of the rear plate 55. The left and right sides are open.
[0004]
The circuit board 56 made of a printed circuit board is configured by mounting various electrical components (not shown). The circuit board 56 is attached to the frame body 51 by appropriate means while being housed in the frame body 51. It has been.
[0005]
The coaxial connector 57 includes an outer conductor 58 and an inner conductor 59 disposed in the outer conductor 58. The coaxial connector 57 has the outer conductor 58 fixed to the front plate 52 and the inner conductor. 59 is connected to the circuit board 56 through a hole (not shown) of the front plate 52. (For example, see Patent Document 1)
[0006]
As shown in FIG. 7, the mounting structure of the high-frequency unit having such a configuration is arranged such that the lower surface plate 54 faces the mother substrate 60 made of a printed circuit board, and the mounting legs 52a of the front and rear plates 52, 55 are provided. The mounting legs 52a and 55a are attached to the mother board 60 by soldering or the like in a state where 55a is inserted through a hole (not shown) of the mother board 60.
[0007]
However, in recent years, electronic devices have been required to be thinner and lighter, and as shown in FIG. 7, if the longitudinal direction of the frame 51 is attached to the mother substrate 60 in an upright state, the electronic device can be thinned. In addition, the rectangular parallelepiped frame 51 having the size of the front plate 52 has a large amount of material and cannot be reduced in weight, and the mounting legs 52a and 55a are connected to the front and rear plate 52 and 55 from the end portions. Since it protrudes downward, the material removal is poor and the cost is high.
[0008]
[Patent Document 1]
JP 2000-286567 A [0009]
[Problems to be solved by the invention]
In the conventional high-frequency unit, the frame 51 is formed as a rectangular parallelepiped having the size of the front plate 52, so that it becomes large, cannot be reduced in weight, increases in material costs, and increases in cost. There's a problem.
Further, since the mounting legs 52a and 55a protrude downward from the end portions of the front and rear plates 52 and 55, there is a problem that the material is poor and the cost is high.
Further, in the mounting structure of the high-frequency unit, there is a problem in that it cannot be thinned because the longitudinal direction of the frame 51 is attached to the mother substrate 60 in an upright state.
[0010]
Accordingly, an object of the present invention is to provide a high-frequency unit that is small in size, can be thinned and reduced in weight, has good material handling, and is inexpensive, and its mounting structure.
[0011]
[Means for Solving the Problems]
As a first means for solving the above problems, a mother board comprising a printed circuit board comprising a frame made of a metal plate containing a circuit board and a coaxial connector attached to the front plate of the frame. The frame is configured to cover the rectangular front plate, a pair of side plates extending rearward from the short side of the front plate, and the rear side of the pair of side plates. The coaxial connector has an outer conductor and an inner conductor disposed in the outer conductor. The coaxial connector has the outer conductor fixed to the front plate and the inner conductor. A conductor is connected to the circuit board through a hole provided in the front plate, and the pair of side plates are narrower than the width in the height direction of the front plate, and the upper edge or lower side of the front plate. With a step on the edge A narrow portion formed over Katatan portion, the said from one side edge of the narrow width portion to have a mounting leg extending stepped direction, disposed on the mother board said step provided in said pair of side plates The configuration is possible .
[0012]
Further, as a second solving means, the pair of side plates are coupled to the front plate and formed with a wide portion having substantially the same width in the height direction as the front plate and the step from the wide portion. It was set as the structure which has the said narrow part made.
Further, as a third solution, the step provided on the pair of side plates is provided on either the upper side or the lower side of the frame body.
[0013]
Further, as a fourth solving means, the one side edge located at the step of the narrow width portion is more coaxial than the outer peripheral portion of the coaxial connector located above or below the frame body. It was set as the structure located in the center side of the connector. Further, a fifth aspect of the present invention, the one side edge located on the step of the front KiHoso width portion, the upper side or the tubular outer conductor of the coaxial connector located on the lower side of the frame body It was set as the structure located in the center side of the said coaxial connector rather than the outer peripheral part.
[0014]
As a sixth solution, the frame body is composed of a single metal plate in which the front plate, the pair of side plates, and the rear plate are connected by a connecting portion.
Further, as a seventh solving means, the frame body includes a first connecting portion including a crosspiece connecting the pair of side plates, and a second connecting portion connected to the first connecting portion and extending forward. And the front plate connected to the second connecting portion, and the pair of side plates are coupled to the short side of the front plate.
[0015]
Further, as an eighth solving means, the frame body is provided with a connecting portion that connects the corners of the front plate and the pair of side plates on the upper side or the lower side.
[0016]
Further, as a ninth solving means, the high-frequency unit according to any one of claims 1 to 8 and a mother board made of a printed board to which the high-frequency unit is attached are provided, and the mother board is provided on the pair of side plates. A mounting structure in which the mounting leg is mounted on the mother board in a state where the mounting leg is disposed within the step.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a front view showing a first embodiment of a high-frequency unit according to the present invention, and FIG. 2 is a first embodiment of the high-frequency unit according to the present invention. FIG. 3 is a side view showing the mounting structure, FIG. 3 relates to the first embodiment of the high-frequency unit of the present invention, and is a perspective view in a state where the frame is turned over, and FIG. 4 is a frame according to the first embodiment of the high-frequency unit of the present invention. It is explanatory drawing which shows this manufacturing method.
[0018]
FIG. 5 is a perspective view of a frame according to the second embodiment of the high-frequency unit of the present invention, and FIG. 6 is an explanatory view showing a method for manufacturing the frame according to the second embodiment of the high-frequency unit of the present invention.
[0019]
The configuration of the high-frequency unit according to the present invention will be described with reference to FIGS. 1 to 3. As shown in FIG. 3, a rectangular frame body 1 made of a single metal plate is formed with a rectangular front plate 2. , Having a pair of side plates 3 extending from the short side located on both sides of the front plate 2 to the rear side, and a rear plate 4 closing the rear side of the pair of side plates 3. The side is in an open state.
[0020]
Moreover, a pair of side surface board 3 consists of the width | variety substantially the same as the width | variety of the height direction of the front plate 2, and has the wide part 3a connected with the front plate 2, and the level | step difference 3b from the wide part 3a to the height direction, A narrow portion 3c formed over the rear end portion and a plurality of mounting legs 3e formed extending from one side edge 3d of the narrow portion 3c in the step 3b direction. And this attachment leg 3e is the same as the height of the level | step difference 3b, or is lower than the level | step difference 3b, and is provided in the level | step difference 3b.
[0021]
That is, FIG. 3 shows a state in which the frame body 1 is turned upside down, and the step 3b is positioned above. However, the step 3b is formed on the lower side of the frame body 1 as shown in FIG. In addition, one side edge 3d of the narrow portion 3c, which is the base of the mounting leg 3e, is in a state of being positioned closer to the center side of the frame body 1 than the lower edge 2a of the front plate 2.
[0022]
In this embodiment, the step 3b is provided on the lower side of the frame 1, but the step 3b may be provided on the upper side of the frame 1 and the wide portion 3a is deleted. In addition, a narrow portion 3c narrower than the front plate 2 may be provided from the front plate 2 to the rear end.
[0023]
Further, the rear plate 4 is formed with the same width as the narrow portion 3c of the side plate 3 has a plurality of mounting legs 4b extending from one side edge 4a in step 3b direction, the mounting leg 4b is The height of the step 3b is equal to or lower than that of the step 3b, and is provided in the step 3b.
Further, the front plate 2 is provided with a hole 2b, and a plurality of first connecting portions 5 each including a crosspiece connecting the side surface plates 3 are provided between the pair of side surface plates 3.
[0024]
The first connecting portion 5 located in the front is provided with a second connecting portion 6 connected to the front connecting plate 6 and extending forward, and the front plate 2 is connected to the second connecting portion 6. It has been.
The end portions of the front plate 2 and the side plate 3 are separated from each other before assembly, and the end portions of the front plate 2 and the side plate 3 are joined by caulking or the like at the time of assembly.
[0025]
The narrow portion 3c of the side surface plate 3 and the corner portion of the rear surface plate 4 are provided with a third connecting portion 7 that connects the both, and the first and second connecting portions 5 and 6 are bent. Thus, it has a shield portion 8 that partitions the inside of the frame 1 and a plurality of protruding pieces 9 that protrude from the shield portion 8.
[0026]
Next, a manufacturing method of the frame body 1 having such a configuration will be described with reference to FIG. 4. First, a hoop-shaped metal plate is punched to obtain a frame body 1 having a development view as shown in FIG. It is formed.
[0027]
That is, a pair of side plates 3 having a narrow portion 3c provided with a wide portion 3a and a step 3b from the wide portion 3a and having a mounting leg 3e within the width of the wide portion 3a, and a pair of side plates 3 A plurality of first connecting parts 5 composed of crosspieces connecting each other, a second connecting part 6 connected to the first connecting part 5 located in front, a hole 2b, and a second The front plate 2 connected to the connecting portion 6 and the rear plate 4 having the corner portions connected to the pair of side plates 3 by the third connecting portion 7 and having the mounting legs 4b within the width of the wide width portion 3a. In this state, a shield portion 8 connected to the first and second connecting portions 5 and 6 and a projecting piece 9 provided at an end of the shield portion 8 are formed.
[0028]
Next, the first connecting portion 5 is bent downward along the fold line S1 to form one shield portion 8, and the shield portion 8 is bent downward along the fold line S2. The shield part 8 is formed.
[0029]
Then, along fold lines S3, the second connecting portion 6 with bent upward along fold line S4, after bending the second connecting portion 6 to the horizontal state, along a folding line S5, The pair of side plates 3 are bent downward.
[0030]
Thereafter, the front plate 2 and the rear plate 4 are bent downward along the folding lines S6 and S7, respectively, and the ends of the front plate 2 and the rear plate 4 are aligned with the ends of the pair of side plates 3. When the joining portions are joined by caulking or the like, the manufacture of the frame body 1 is completed, and the frame body 1 as shown in FIG. 3 is manufactured.
[0031]
In addition, although the frame 1 of this Example was demonstrated with what was comprised with the metal plate of the sheet | seat with which the front plate 2, the pair of side plate 3, and the rear plate 4 were connected, it is a frame with a plurality of metal plates. The body 1 may be configured.
Further, the mounting legs may be provided only on the side plate 3.
[0032]
A circuit board 10 made of a printed circuit board is mounted with various electrical components (not shown) to form a desired electrical circuit. The circuit board 10 is stored in the frame 1 as appropriate. It is attached to the frame 1 by.
The mounting structure of the circuit board 10 in this embodiment is such that the projecting piece 9 is inserted into a hole (not shown) of the circuit board 10 with the lower surface of the circuit board 10 placed on the shield portion 8. The circuit board 10 is attached to the frame 1 by soldering the projecting pieces 9 to the circuit board 10.
[0033]
Each of the two coaxial connectors 11 includes a cylindrical outer conductor 12 having a screw portion 12 a on the outside, a flange portion 12 b provided at an end of the outer conductor 12, and an insulating material ( And an internal conductor 13 arranged via a not-shown).
[0034]
The coaxial connector 11 is fixed to the front plate 2 by crimping a part of the outer conductor 12 with the flange portion 12b abutting against the front plate 2 and a part of the outer conductor 12 being inserted into the hole 2b. The
The inner conductor 13 of the coaxial connector 11 is soldered to the circuit board 10 and connected to the electric circuit.
[0035]
Further, when the coaxial connector 11 is attached to the front plate 2, the one side edge 3 d positioned at the step 3 b of the narrow width portion 3 c is an outer peripheral portion (鍔) of the coaxial connector 11 positioned below the frame body 1. The lower end of the portion 12b) is located closer to the center of the coaxial connector 11 and closer to the center of the coaxial connector 11 than the outer peripheral portion of the cylindrical outer conductor 12 (lower end of the screw portion 12a). Yes.
[0036]
The first cover 14 made of a metal plate is attached to the frame body 1 so as to cover the open portion above the frame body 1, and the second cover 15 made of a metal plate has an open portion below the frame body 1. It attaches to the frame 1 so that it may cover.
And the attachment legs 3e and 4b penetrate the 2nd cover 15, and protrude in the level | step difference 3b direction.
[0037]
As shown in FIG. 2, the mounting structure of the high-frequency unit having such a configuration is such that a mother board 16 made of a printed circuit board is disposed in the step 3b of the frame 1, and the mounting legs 3e project in the step 3b direction. The mounting legs 3e and 4b are attached to the mother board 16 by soldering or the like while 4b is inserted through holes (not shown) of the mother board 16.
[0038]
In recent years, electronic devices have been required to be thinner and lighter. However, as shown in FIG. 2, the frame 1 is attached in a state where the longitudinal direction of the frame 1 is parallel to the mother substrate 16, and the mother substrate 16 is framed. Since it is positioned within the step 3b of the body 1, it can be made thinner.
[0039]
Also, the frame 1, first and rectangular-shaped portion, since al Toka second rectangular parallelepiped portion formed between the narrow portion 3c formed between the pair of side plates 3 of the wide portion 3a, the frame The body 1 can be reduced in size as compared with the conventional one, and the material can be reduced to reduce the weight.
Further, since the mounting legs 3e and 4b are provided so as to project in the direction of the step 3b, the mounting legs 3e and 4b can be formed without projecting downward from the wide part 3a (formed within the width of the wide part 3a). It is good, inexpensive even for can be obtained.
[0040]
5 and 6 show a second embodiment of the high-frequency unit according to the present invention. The structure of the frame 1 in the second embodiment will be described with reference to FIG. And a corner portion of the pair of side plates 3 is provided with a fourth connecting portion R1 that connects the front plate 2 and the side plate 3.
[0041]
Since other configurations are substantially the same as those of the first embodiment, the same parts are denoted by the same reference numerals, and the description thereof is omitted here.
[0042]
Next, a manufacturing method of the frame body 1 having such a configuration will be described with reference to FIG. 6. First, a hoop-shaped metal plate is punched to obtain a frame body 1 having a development view as shown in FIG. It is formed.
[0043]
That is, a pair of side plates 3 having a wide portion 3a and a narrow portion 3c provided with a mounting leg 3e within the width of the wide portion 3a, provided with a step 3b from the wide portion 3a, and a pair of side plates 3 A plurality of first connecting parts 5 composed of crosspieces connecting each other, a second connecting part 6 connected to the first connecting part 5 located in front, a hole 2b, and a second The front plate 2 connected to the connecting portion 6 and the rear plate 4 having the corner portions connected to the pair of side plates 3 by the third connecting portion 7 and having the mounting legs 4b within the width of the wide width portion 3a. In this state, a shield portion 8 connected to the first and second connecting portions 5 and 6 and a projecting piece 9 provided at an end of the shield portion 8 are formed.
[0044]
Next, the first connecting portion 5 is bent downward along the fold line S1 to form one shield portion 8, and the shield portion 8 is bent downward along the fold line S2. The shield part 8 is formed.
[0045]
Next, after bending the pair of side plates 3 along the fold line S5, the front plate 2 and the rear plate 4 are bent down along the fold lines S6 and S7, respectively. When the end portions of the rear plate 4 are aligned with the end portions of the pair of side plate plates 3 and the mating portions are joined by caulking or the like, the manufacture of the frame 1 is completed.
[0046]
A high frequency unit as shown in FIGS. 1 and 2 is manufactured using the frame body 1 having such a configuration, and is attached to the mother board 16 as in the first embodiment. It is like that.
[0047]
【The invention's effect】
The high-frequency unit of the present invention includes a frame made of a metal plate containing a circuit board, and a coaxial connector attached to the front plate of the frame. The frame has a rectangular front plate, a front plate, And a pair of side plates extending rearward from the short side and a rear plate closing the rear side of the pair of side plates, the pair of side plates being narrower than the width of the front plate in the height direction, A narrow width portion formed over the rear end portion having a step with respect to the upper edge or the lower edge of the face plate, and a mounting leg extending in a step direction from one side edge of the narrow width portion.
With such a configuration, the frame becomes a rectangular parallelepiped portion formed between the narrow portions of the pair of side plates smaller than the size of the front plate, and the frame is reduced in size as compared with the prior art, and the material is The weight can be reduced.
Further, since the mounting legs are provided so as to protrude in the step direction, the mounting legs can be formed in the steps, and the material can be taken well and inexpensive.
[0048]
In addition, the pair of side plates has a wide portion which is coupled to the front plate and has substantially the same width in the height direction as the front plate, and a narrow portion formed with a step from the wide portion. And the pair of side plates can be securely and firmly connected to each other, and a strong frame can be obtained.
[0049]
Moreover, since the level | step difference provided in a pair of side plate was provided in either the upper side or the lower side of a frame, the reduction | decrease of the accommodation product in a frame can be suppressed.
[0050]
In addition, the one side edge located at the step of the narrow width portion is located closer to the center side of the coaxial connector than the outer peripheral portion of the coaxial connector located above or below the frame body. Can be reduced as much as possible, and the height of the narrow portion can be reduced.
[0051]
Further, the coaxial connector has a cylindrical outer conductor and an inner conductor disposed in the outer conductor, and one side edge located at the step of the narrow portion is above or below the frame body. Since it is located closer to the center side of the coaxial connector than the outer peripheral portion of the cylindrical outer conductor of the coaxial connector located on the side, the height of the front plate can be made as small as possible and the height of the narrow portion can be made even smaller.
[0052]
In addition, the frame body is composed of a single metal plate in which the front plate, the pair of side plates, and the rear plate are connected by a connecting portion, so that there is little material, and the assembly can be automated and inexpensive. can get.
[0053]
In addition, the frame body includes a first connecting portion including a crosspiece connecting between the pair of side plates, a second connecting portion connected to the first connecting portion and extending forward, and the second connecting portion. Since the pair of side plates is coupled to the short side of the front plate, the front plate and the pair of side plates can be coupled within the width between the pair of side plates. It is possible to obtain an inexpensive material with good material removal.
[0054]
In addition, since the frame is provided with a connecting portion that connects the corners of the front plate and the pair of side plates on the upper side or the lower side, the connection between the front plate and the pair of side plates is between the pair of side plates. Since it can be performed within the width, it is possible to obtain a material with good material and low cost.
[0055]
In addition, since the high-frequency unit and a mother board made of a printed circuit board to which the high-frequency unit is attached, the mounting legs are attached to the mother board in a state where the mother board is arranged in a step provided on the pair of side plates. Since the frame body is attached in a state where the longitudinal direction of the frame body is parallel to the mother substrate, and the mother substrate is positioned within the step of the frame body, an attachment structure that can be further reduced in thickness can be provided.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of a high-frequency unit according to the present invention.
FIG. 2 is a side view showing a first embodiment of a high-frequency unit according to the present invention and its mounting structure.
FIG. 3 is a perspective view of the high-frequency unit according to the first embodiment of the present invention with the frame body turned upside down.
FIG. 4 is an explanatory view showing a method for manufacturing a frame according to the first embodiment of the high-frequency unit of the present invention.
FIG. 5 is a perspective view of a frame according to a second embodiment of the high-frequency unit of the present invention.
FIG. 6 is an explanatory view showing a method for manufacturing a frame according to a second embodiment of the high-frequency unit of the present invention.
FIG. 7 is a perspective view showing a conventional high-frequency unit and its mounting structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame 2 Front plate 2a Lower edge 2b Hole 3 Side plate 3a Wide width part 3b Step 3c Narrow width part 3d One side edge 3e Mounting leg 4 Rear surface board 4a One side edge 4b Mounting leg 5 1st connection part 6 2nd Connecting portion 7 Third connecting portion R1 Fourth connecting portion 8 Shield portion 9 Protruding piece 10 Circuit board 11 Coaxial connector 12 External conductor 12a Screw portion 12b Hook portion 13 Internal conductor 14 First cover 15 Second cover 16 Mother board S1-S7 fold line

Claims

A high-frequency unit that includes a frame made of a metal plate containing a circuit board and a coaxial connector attached to the front plate of the frame, and is attached to a mother board made of a printed circuit board, wherein the frame is The rectangular front plate, a pair of side plates extending rearward from the short side of the front plate, and a rear plate closing the rear side of the pair of side plates, the coaxial connector includes an external conductor, An inner conductor disposed in the outer conductor, the coaxial connector is configured such that the outer conductor is fixed to the front plate and the inner conductor passes through a hole provided in the front plate. The pair of side plates connected to the circuit board are narrower than the width of the front plate in the height direction, and are formed over the rear end with a step with respect to the upper edge or lower edge of the front plate. Narrow part and this narrow part High frequency unit, characterized in that from the one side edge of said have a mounting leg extending stepped direction, the mother substrate can be disposed in the step provided on the pair of side plates.

The pair of side plates include a wide portion that is coupled to the front plate and has substantially the same width in the height direction as the front plate, and the narrow portion formed from the wide portion with the step. The high-frequency unit according to claim 1.

The high-frequency unit according to claim 1 or 2, wherein the step provided on the pair of side plates is provided on either the upper side or the lower side of the frame.

The one side edge located at the step of the narrow width portion is located closer to the center side of the coaxial connector than the outer peripheral portion of the coaxial connector located above or below the frame body. The high frequency unit according to claim 1, wherein the high frequency unit is characterized in that

The one side edge located on the step of the front KiHoso width portion, the frame of the upper side or the coaxial connector than the outer peripheral portion of the tubular outer conductor of the coaxial connector positioned on the lower side The high-frequency unit according to claim 4, wherein the high-frequency unit is located on the center side.

6. The frame according to claim 1, wherein the frame is configured by a single metal plate in which the front plate, the pair of side plates, and the rear plate are connected by a connecting portion. High frequency unit.

The frame body includes a first connecting portion formed of a crosspiece connecting the pair of side plates, a second connecting portion connected to the first connecting portion and extending forward, and the second connecting portion. The high-frequency unit according to claim 6, wherein the front plate is connected, and the pair of side plates are coupled to a short side of the front plate.

The high-frequency unit according to claim 6, wherein the frame body is provided with a connecting portion that connects a corner portion of the front plate and the pair of side plates on the upper side or the lower side.

A high-frequency unit according to any one of claims 1 to 8 and a mother substrate made of a printed circuit board to which the high-frequency unit is attached, wherein the mother substrate is disposed in the step provided on the pair of side plates. An attachment structure for a high-frequency unit, wherein the attachment leg is attached to the mother board in a state.