JP3682193B2 - Screw socket - Google Patents

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JP3682193B2
JP3682193B2 JP37382799A JP37382799A JP3682193B2 JP 3682193 B2 JP3682193 B2 JP 3682193B2 JP 37382799 A JP37382799 A JP 37382799A JP 37382799 A JP37382799 A JP 37382799A JP 3682193 B2 JP3682193 B2 JP 3682193B2
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contact
holding recess
piece
base
holding
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JP2001185312A (en
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雅章 磯田
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、周面にねじ部が設けられたＥ形の口金を有するランプを保持し、給電するためのねじ込みソケットに関するものである。
【０００２】
【従来の技術】
一般に市販されている白熱電球のようなランプでは、例えばＥ１１，Ｅ１２などのＥ型の口金（所謂エジソン・ベースの口金）が用いられている。この種の口金は外周面に外周電極となるねじ部が形成され、先端面の中央部に先端電極が設けられている。このような口金を備えたランプを保持するねじ込みソケットは、図１３及び図１４に示すように、有底円筒状のソケット本体１を備え、ソケット本体１の内側である保持凹所２にランプの口金が挿入されるようになっており、保持凹所２の内周面には口金のねじ部に螺合するねじ受け部３が形成されている。また、保持凹所２内には、導電性を有する板金から形成され口金の外周電極に接触する周側接触子１０と、導電性を有する板金から形成され口金の先端電極に接触する底側接触子２０とが、ソケット本体１の中心を挟んで対向する位置に配置されている（例えば実開平７−２７０７７号公報参照）。
【０００３】
ここで、保持凹所２の底板４には底板４を貫通する接触子挿通孔５ａ，５ｂが穿設されており、各接触子挿通孔５ａ，５ｂには周側接触子１０及び底側接触子２０がそれぞれ一部を挿入した状態で固定されている。周側接触子１０は、図１４（ａ）（ｂ）に示すように略短冊状の板金の端部が折り返された略Ｊ字状に形成され、一方の側片の先端部は口金の外周電極に接触する当接片１１となっている。また、該側片の基部の両側縁には、それぞれ、側方に突出する係止爪片１３，１３が突設されるとともに、側片の両側縁における係止爪片１３，１３に対して当接片１１側の部位には側方に突出する突出片１４，１４が突設されている。各係止爪片１３の下面は、側片の基部側（下側）から先端側（上側）に行くに従って側方への突出量が大きくなるように傾斜し、各係止爪片１３の上面は側片の上下方向に略直交している。而して、周側接触子１０の折曲部分を保持凹所２の底板４に穿設された接触子挿通孔５ａに上方から挿入すると、係止爪片１３が接触子挿通孔５ａに挿入され、突出片１４と係止爪片１３との間に接触子挿通孔５ａの周部が挟持され、周側接触子１０が保持凹所２の底板４に固定されるのである。尚、底側接触子２０も同様にして保持凹所２の底板４に固定されるのである。
【０００４】
【発明が解決しようとする課題】
上記構成のねじ込みソケットでは、周側接触子１０は、突出片１４と係止爪片１３との間に接触子挿通孔５ａの周部を挟持することによって、保持凹所２の底板４に固定されており、突出片１４及び係止爪片１３は周側接触子１０の側方に突出しているので、周側接触子１０を含む平面内において周側接触子１０が傾くことはないが、周側接触子１０を含む平面と略直交する方向において周側接触子１０と接触子挿通孔５ａとの間にクリアランスがあるため、周側接触子１０を含む平面と略直交する方向において周側接触子１０が傾斜し、当接片１１の先端が保持凹所２の中心側に倒れる虞があった。そのため、ソケット本体１の保持凹所２にランプの口金を挿入する際に、当接片１１の先端が口金に引っ掛かり、周側接触子１０が変形するという問題があった。また周側接触子１０と接触子挿通孔５ａとの間にはクリアランスがあり、周側接触子１０をソケット本体１に固定する部位と当接片１１の先端との間の距離は長いので、当接片１１の先端位置が保持凹所２の中心側に移動して異極間の絶縁距離が確保できなくなる虞もあった。
【０００５】
さらに、底側接触子２０は保持凹所２の底板４に接しているため、底板４の反りや成型時のバリなどによって底側接触子２０の位置がばらつく虞があり、またランプの口金から発生した金属粉などが異極間にたまって絶縁不良となる虞もあった。また、ランプの口金を保持凹所２にねじ込んだ際に、ランプの口金によって底側接触子２０の当接片２１が保持凹所２の底板４側に押圧されるので、口金の先端電極と当接片２１との接触安定性を向上させるため、図１５に示すように、底側接触子２０の当接片２１に対向する底板４の部位に、当接片２１側に突出する突起３９を形成したねじ込みソケットも従来より提供されているが（特開平８−３２１３６９号公報参照）、底板４に突起３９を形成しているだけなので、ソケット本体１の成形材料によっては突起３９が座屈する虞があった。
【０００６】
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、接触子を確実に位置決めすることができるねじ込みソケットを提供することにある。また、請求項５乃至８の発明の目的は、上記目的に加えて絶縁性を向上させたねじ込みソケットを提供することにあり、請求項９及び１０の発明の目的は、上記目的に加えて接触信頼性を向上させたねじ込みソケットを提供することにある。
【０００７】
【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、ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成してあり、前記突出片は、各接触子の両側縁から連続一体に形成され、突出片に側方から当接するガイド用リブを保持凹所の内面に形成したことを特徴とする。この発明によれば、各接触子には、各接触子の平面方向と略直交し且つ保持凹所の中心側に向かう方向に突出する突出片が突設されており、各接触子が対応する接触子挿通孔に挿入されると、各接触子に設けた突出片が保持凹所の底面に当接するので、各接触子を確実に位置決めすることができる。したがって、各接触子が保持凹所の中心側に倒れることはないから、ランプの口金を保持凹所にねじ込む際に口金の先端に接触子が引っ掛かって接触子が変形するというような不具合を防止できる。さらに、接触子に設けた突出片を押圧することにより、接触子の組込作業を行えるので、組込作業時に口金と接触する接触子の部位が変形することはなく、組立不良が発生するのを防止できる。
【０００８】
さらに、請求項１の発明によれば、突出片が各接触子の両側縁からそれぞれ連続一体に形成され、且つ、ガイド用リブによって側方からガイドされているので、接触子を含む平面内において接触子が傾くことはなく、また部品数が増えることはないから、組立の手間を少なくできる。
【００１１】
請求項２の発明では、ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成し、周側接触子と底側接触子とは保持凹所の中心を挟んで対向する位置に配置されており、底側接触子は、ソケット本体に固定される固定片と、固定片における保持凹所の開口側の一端部から周側接触子側へ突出し口金の先端電極と接触する当接片とを有し、保持凹所の底面における周側接触子の取付部位と底側接触子の取付部位との間の部位に、前記当接片の裏面側に向かって突出し前記当接片が保持凹所内の所定位置よりも底面側へ移動するのを規制するストッパー用リブを突設し、底面からのストッパー用リブの高さ寸法を底面における他の部位よりも高くし、ストッパー用リブの両側縁を周側接触子及び底側接触子の表面とそれぞれ接触させて成ることを特徴とする。この発明によれば、ストッパー用リブの両側縁が両接触子の表面とそれぞれ接触しているので、両接触子が保持凹所の中心側に倒れるのを防止して、両接触子間の絶縁距離が短くなるのを防止でき、且つ、保持凹所の底面からのストッパー用リブの高さ寸法を底面における他の部位よりも高くしているので、口金から発生した金属粉はストッパー用リブよりも低い保持凹所の底面にたまるので、金属粉が両接触子間にたまりにくく、両接触子間の絶縁不良が発生するのを防止できる。
【００１２】
請求項３の発明では、請求項２の発明において、ストッパー用リブの幅寸法を、上記当接片の幅寸法よりも狭くしたことを特徴とし、ランプの口金を保持凹所にねじ込み、底側接触子の当接片をストッパー用リブの端面に押し付けた場合、ストッパー用リブの幅寸法は当接片の幅寸法よりも狭いので、口金の先端電極と底側接触子の当接片との接触圧力を高めることができ、且つ、ストッパー用リブと当接片との接触面積が小さいから、保持凹所の底面の反りや成型時のばり等によって底側接触子の当接片の位置がばらつくことはなく、口金の先端電極と底側接触子との接触信頼性を向上させることができる。
【００１３】
請求項４の発明では、請求項２の発明において、ストッパー用リブにおける保持凹所の開口側の端面を保持凹所の底面と略平行としたことを特徴とし、ランプの口金を保持凹所にねじ込んだ際に、底側接触子の当接片を固定片に対して略直交する位置まで弾性変形させることができる。
【００１４】
請求項５の発明では、請求項２の発明において、当接片における先端電極との接触部位に対応するストッパー用リブの部位に、ストッパー用リブと略直交する補強用リブを突設したことを特徴とし、ランプ装着時に口金の先端電極と接触する当接片の部位に対応するストッパー用リブの部位に、ストッパー用リブと略直交する補強用リブを設けているので、ストッパー用リブの強度を高めることができ、口金の先端電極によってストッパー用リブに荷重が加わったとしても、ストッパー用リブが破損することはなく、したがって口金の先端電極と底側接触子の当接片との接触圧力を高めることができ、且つ、補強用リブは各接触子に設けた突出片の間に配置されるので補強用リブによって両接触子間の絶縁距離を高めることができる。
【００１５】
請求項６の発明では、ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成し、各接触子挿通孔はソケット本体を貫通し、各接触子挿通孔を介してソケット本体の裏面から外側に突出する両接触子の端子片により上記接続部を構成し、該端子片にソケット本体が実装される実装基板を仮保持するための仮保持片を切り起こしにより形成するとともに、各接触子挿通孔の端面に両接触子の表面とそれぞれ当接して仮保持片が側方へ移動するのを規制する規制用リブを設けたことを特徴とし、両接触子を接触子挿通孔に挿入する際に規制用リブが仮保持片の側方への移動を規制しているので、規制用リブによって仮保持片がガイドされ、組立作業性が向上する。しかも、規制用リブの先端は両接触子の表面と当接しているので、接触子を含む平面内において接触子が移動するのを規制用リブによって規制することができ、組立作業時に仮保持片が接触子挿通孔の端面と当接して仮保持片が変形するのを防止することができる。さらに組立後に端子片の位置が位置決めされるから、ソケット本体を基板に取り付ける作業を容易に行うことができる。
【００１６】
請求項７の発明では、請求項６の発明において、接触子挿通孔及び仮保持片は、保持凹所の開口側から目視可能な位置に設けられたことを特徴とし、両接触子をソケット本体に取り付けた状態で、保持凹所の開口側から仮保持片の状態を目視することができ、仮保持片の見え方から両接触子の取付状態を確認し、不十分な取付状態となるのを防止することができる。
【００１７】
【発明の実施の形態】
本実施形態のねじ込みソケットを図１乃至図１２を参照して説明する。このねじ込みソケットは、外周面に外周電極となるねじ部５２が形成され、先端面の中央部に先端電極５３が設けられた例えばＥ１１，Ｅ１２などのＥ型の口金５１を有するランプ５０を保持し、給電するために用いられる。このねじ込みソケットは、有底円筒状の樹脂製のソケット本体１を備え、ソケット本体１の内側である保持凹所２にランプ５０の口金５１が挿入されるようになっており、保持凹所２の内周面には口金５１のねじ部５２に螺合するねじ受け部３が形成されている。このねじ受け部３は、保持凹所２の内周面に沿って形成されたねじ山が、ソケット本体１の周方向の２カ所でソケット本体１の中心線方向の略全長に亘る溝部６ａ，６ｂによって分断されたような形状に形成されている。そして、一方の溝部６ａには口金５１のねじ部（外周電極）５２に接触する周側接触子１０が配設され、他方の溝部６ｂには口金５１の先端電極５３に接触する底側接触子２０が配設されている。尚、ソケット本体１の裏面には、ソケット本体１をプリント基板に位置決めするための位置決め突起１ａが突設されている。
【００１８】
ここで、周側接触子１０及び底側接触子２０は、それぞれ、保持凹所２の底板４にそれぞれ設けた接触子挿通孔５ａ，５ｂに保持凹所２の開口側から一端部を挿入した状態で保持凹所２内に配置されている。
【００１９】
周側接触子１０は、導電性を有する長尺の板金から形成され、一端部には口金の外周電極と接触する当接片１１が設けられ、他端部にはプリント基板に半田付けするための接続片（端子片）１２が設けられている。周側接触子１０の略中央には、保持凹所２の内周面側に突出し、周側接触子１０が接触子挿通孔５ａに挿入された状態で保持凹所２の底板４下面と係止する係止爪片１３が周側接触子１０の一部を切り起こして形成される。また、周側接触子１０における係止爪片１３に対して当接片１１側の部位の両側縁からは、ソケット本体１に固定される周側接触子１０の部位と略直交し且つ保持凹所２の中心側に向かう方向に突出し、周側接触子１０が接触子挿通孔５ａに挿入された状態で保持凹所２の底板４と当接する一対の突出片１４，１４が切り起こしにより形成されている。また、接続片１２の一方の側縁には、接続片１２をプリント基板に穿設された貫通孔に挿入する際に貫通孔の端縁と係止してプリント基板への仮保持を行うための仮保持片１５が切り起こしによって形成されている。尚、当接片１１の先端は、先端に行くほど保持凹所２の内周面に近付く向きに傾斜している。
【００２０】
底側接触子２０は、導電性を有する長尺の板金から形成され、ソケット本体１に固定される固定片２６の一端部から保持凹所２の中心側に向かって傾斜し口金の先端電極に接触する当接片２１が設けられ、固定片２６の他端部には外部回路と接続するための接続片（端子片）２２が設けられている。底側接触子２０の略中央には、保持凹所２の内周面側に突出し、底側接触子２０が接触子挿通孔５ｂに挿入された状態で保持凹所２の底板４下面と係止する係止爪片２３が底側接触子２０の一部を切り起こして形成される。また、底側接触子２０における係止爪片２３よりも当接片２１側の部位の両側縁からは、底側接触子２０の平面方向と略直交し且つ保持凹所２の中心側に向かう方向に突出し、底側接触子２０が接触子挿通孔５ｂに挿入された状態で保持凹所２の底板４と当接する一対の突出片２４，２４が切り起こしにより形成されている。また、接続片２２の一方の側縁には、接続片２２をプリント基板に穿設された貫通孔に挿入する際に貫通孔の端縁と係止してプリント基板への仮保持を行うための仮保持片２５が切り起こしによって形成されている。
【００２１】
ここで、周側接触子１０及び底側接触子２０をソケット本体１に取り付ける際は、各接触子１０，２０に設けた係止爪片１３，２３を保持凹所２の内周面と対向させた状態で、両接触子１０，２０に設けた突出片１４，２４を工具７０で押圧して、両接触子１０，２０を保持凹所２の開口側から対応する接触子挿通孔５ａ，５ｂ内に挿入すると、係止爪片１３，２３が保持凹所２の内周面と当接して保持凹所２の中心側に撓められる。この状態からさらに両接触子１０，２０を保持凹所２の底板４側へ押し込むと、係止爪片１３，２３が保持凹所２の底板４を乗り越え、接触子挿通孔５ａ，５ｂの端縁と係止するので、両接触子１０，２０の抜け止めが行われる。
【００２２】
またこの時、両接触子１０，２０の突出片１４，２４が底板４の表面と当接し、係止爪片１３，２３と突出片１４，２４との間に保持凹所２の底板４が挟持されるので、ソケット本体１の中心線方向において両接触子１０，２０が移動するのを規制することができ、また両接触子１０，２０と接触子挿通孔５ａ，５ｂとの間にクリアランスがあったとしても、両接触子１０，２０の突出片１４，２４が底板４の表面と当接しているので、両接触子１０，２０の先端が保持凹所２の中心側へ傾くことはなく、両接触子１０，２０を確実に位置決めできる。したがって、ランプ５０の口金５１を保持凹所２に挿入する際に、口金５２の先端に両接触子１０，２０の先端が引っ掛かって、両接触子１０，２０が変形するというような不具合を防止することができる。また、両接触子１０，２０をソケット本体１に組み込む際は、両接触子１０，２０に設けた突出片１４，２４を工具７０で押圧しているので、ランプ５０の口金５１と接触する当接片１１，２１に外力が加わることはなく、当接片１１，２１が変形することなく両接触子１０，２０を確実にソケット本体１に固定することができる。
【００２３】
ところで、保持凹所２の内周面には、図２及び図６に示すように、両接触子１０，２０がソケット本体１に取り付けられた状態で、両接触子１０，２０の突出片１４，２４に側方から当接するガイド用リブ３１が突設されており、両接触子１０，２０に設けた各一対の突出片１４，２４と底板４の表面とが接触するとともに、突出片１４，２４とガイド用リブ３１とが接触することによって、保持凹所２の内周面の接線方向（すなわち、接触子１０，２０を含む平面と平行な方向）において両接触子１０，２０の先端が傾くのを防止できる。
【００２４】
また、図２、図５及び図７に示すように、保持凹所２の底板４における周側接触子１０の取付位置と底側接触子２０の取付位置との間の部位には、当接片２１の裏面側に向かって突出し、当接片２１が保持凹所２内の所定位置（すなわち、当接片２１が固定片２６に対して略直交する位置）よりも底面側へ移動するのを規制するストッパー用リブ３２が突設されており、ランプ装着時における当接片２１の変形量がストッパー用リブ３２によって制限されるので、底側接触子２０が塑性変形するのを防止している。ここで、ストッパー用リブ３２の両側縁は周側接触子１０及び底側接触子２０の表面にそれぞれ当接しており、周側接触子１０及び底側接触子２０の先端が保持凹所２の中心側に傾くのを規制しており、周側接触子１０と底側接触子２０との間の絶縁距離Ｌ１が不足して、絶縁性が低下するのを防止できる。また、ストッパー用リブ３２における保持凹所２の開口側の端面は底板４と略平行に形成されており、ストッパー用リブ３２の端面は当接片２１と固定片２６との連結部位と略同じ高さに形成されている。したがって、ランプ５０の口金５１を保持凹所２内にねじ込むと、口金５１の先端電極５３によって底側接触子２０の当接片２１がストッパー用リブ３２の端面と当接するまで弾性変形する。尚、ランプ装着時における底側接触子２０の当接片２１の位置を図８中に二点鎖線で示す。
【００２５】
なおストッパー用リブ３２の端面の幅寸法は底側接触子２０の当接片２１の幅寸法よりも狭い寸法に形成されているので、口金５１の先端電極５３と当接片２１との接触圧力が高くなり、また当接片２１が底板４の表面と接触する場合に比べて、成型時に発生するバリなどの影響を受けにくくなり、接触信頼性が向上する。しかも、底板４におけるリブ３２以外の部位は略面一に形成されているので、リブ３２上面の幅寸法が底側接触子２０の当接片２１の幅寸法と略等しい場合に比べて、底側接触子２０の当接片２１と周側接触子１０の突出片１４との間の沿面距離を長くとることでき、口金５１の金属粉が発生したとしても、金属粉はストッパー用リブ３２よりも低い保持凹所２の底にたまるから、周側接触子１０と底側接触子２０との間の絶縁距離Ｌ２を充分確保することができる。
【００２６】
ここで、ストッパー用リブ３２には保持凹所２の略中央でストッパー用リブ３２と略直交する補強用リブ３３が突設されており、ストッパー用リブ３２における口金５１の先端電極５３と当接する部位に補強用リブ３３が形成されているので、リブ３２の強度を高めることができ、口金５１を保持凹所２にねじ込む際にリブ３２に外力が加わったとしても、リブ３２が破損することはないから、口金５１の先端電極５３と底側接触子２０との接触圧力を高めることができ、接触信頼性が向上する。また、両接触子１０，２０の突出片１４，２４の間に補強用リブ３３が配置されるので、補強用リブ３３によって両接触子１０，２０間の絶縁距離を高めることができる。
【００２７】
また、図４、図５及び図７に示すように、接触子挿通孔５ａ，５ｂには両接触子１０，２０の接続片１２，２２表面とそれぞれ当接し、仮保持片１５，２５が側方へ移動するのを規制する規制用リブ３４が突設されており、両接触子１０，２０を接触子挿通孔５ａ，５ｂに挿入する際に、規制用リブ３４が仮保持片１５，２５の側方への移動を規制しているので、規制用リブ３４によって仮保持片１５，２５がガイドされ、組立作業性が向上する。しかも、規制用リブ３４の先端は両接触子１０，２０の表面と当接しているので、接触子１０，２０を含む平面内において接触子１０，２０が移動するのを規制用リブ３４によって規制することができ、組立作業時に仮保持片１５，２５が接触子挿通孔５ａ，５ｂの端面と当接して変形するのを防止できる。さらに組立後に規制用リブ３４によって接続片１２，２２の位置が位置決めされるから、ソケット本体１をプリント基板６０に取り付ける作業を容易に行うことができる。また、接触子挿通孔５ａ，５ｂ及び仮保持片１２，２２は、保持凹所２の開口側から目視可能な位置に設けられているので、仮保持片１２，２２の見え方で両接触子１０，２０の取付状態を確認することができ、不十分な取付状態となるのを防止できる。尚、本実施形態では請求項９の発明をランプソケットに適用した例について説明しているが、プリント基板６０に半田６１で半田付けされる接続片１２，２２に、プリント基板６０に仮止めするための仮保持片１５，２５を切り起こしにより設けるとともに、両接触子１０，２０とそれぞれ当接し、仮保持片１５，２５が側方へ移動するのを規制する規制用リブ３４を接触子挿通孔５ａ，５ｂに設ける点については、プリント基板６０に実装される端子台のような一般の実装部品にも適用可能である。
【００２８】
尚、図１１および図１２は本発明の参考例を示し、図１１に示す例では接触子１０（２０）の一方の側片のみから突出片１４（２４）を切り起こしにより形成してある。また図１２に示す例では接触子１０，２０の中央部を切り起こして突出片１４（２４）を形成してあり、突出片１４，２４を両接触子１０，２０と一体に形成することにより、部品数を少なくして組立の手間を減らすことができる。
【００２９】
【発明の効果】
上述のように、請求項１の発明は、ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成してあり、前記突出片は、各接触子の両側縁から連続一体に形成され、突出片に側方から当接するガイド用リブを保持凹所の内面に形成したことを特徴とする。この発明によれば、各接触子には、各接触子の平面方向と略直交し且つ保持凹所の中心側に向かう方向に突出する突出片が突設されており、各接触子が対応する接触子挿通孔に挿入されると、各接触子に設けた突出片が保持凹所の底面に当接するので、各接触子を確実に位置決めできるという効果がある。したがって、各接触子が保持凹所の中心側に倒れることはないから、ランプの口金を保持凹所にねじ込む際に口金の先端に接触子が引っ掛かって接触子が変形するというような不具合を防止できるという効果もある。さらに、接触子に設けた突出片を押圧することにより、接触子の組込作業を行えるので、組込作業時に口金と接触する接触子の部位が変形することはなく、組立不良が発生するのを防止できるという効果もある。
【００３０】
さらに、請求項１の発明によれば、突出片が各接触子の両側縁からそれぞれ連続一体に形成され、且つ、突出片がガイド用リブによって側方からガイドされているので、接触子を含む平面内において接触子が傾くことはなく、また部品数が増えることはないから、組立の手間を少なくできる。
【００３３】
請求項２の発明は、ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成し、周側接触子と底側接触子とは保持凹所の中心を挟んで対向する位置に配置されており、底側接触子は、ソケット本体に固定される固定片と、固定片における保持凹所の開口側の一端部から周側接触子側へ突出し口金の先端電極と接触する当接片とを有し、保持凹所の底面における周側接触子の取付部位と底側接触子の取付部位との間の部位に、前記当接片の裏面側に向かって突出し前記当接片が保持凹所内の所定位置よりも底面側へ移動するのを規制するストッパー用リブを突設し、底面からのストッパー用リブの高さ寸法を底面における他の部位よりも高くし、ストッパー用リブの両側縁を周側接触子及び底側接触子の表面とそれぞれ接触させて成ることを特徴とし、ストッパー用リブの両側縁が両接触子の表面とそれぞれ接触しているので、両接触子が保持凹所の中心側に倒れるのを防止して、両接触子間の絶縁距離が短くなるのを防止でき、且つ、保持凹所の底面からのストッパー用リブの高さ寸法を底面における他の部位よりも高くしているので、口金から発生した金属粉はストッパー用リブよりも低い保持凹所の底面にたまるので、金属粉が両接触子間にたまりにくく、両接触子間の絶縁不良が発生するのを防止できるという効果がある。
【００３４】
請求項３の発明は、請求項２の発明において、ストッパー用リブの幅寸法を、上記当接片の幅寸法よりも狭くしたことを特徴とし、ランプの口金を保持凹所にねじ込み、底側接触子の当接片をストッパー用リブの端面に押し付けた場合、ストッパー用リブの幅寸法は当接片の幅寸法よりも狭いので、口金の先端電極と底側接触子の当接片との接触圧力を高めることができ、且つ、ストッパー用リブと当接片との接触面積が小さいから、保持凹所の底面の反りや成型時のばり等によって底側接触子の当接片の位置がばらつくことはなく、口金の先端電極と底側接触子との接触信頼性が向上するという効果がある。
【００３５】
請求項４の発明は、請求項２の発明において、ストッパー用リブにおける保持凹所の開口側の端面を保持凹所の底面と略平行としたことを特徴とし、ランプの口金を保持凹所にねじ込んだ際に、底側接触子の当接片を固定片に対して略直交する位置まで弾性変形させることができるという効果がある。
【００３６】
請求項５の発明は、請求項２の発明において、当接片における先端電極との接触部位に対応するストッパー用リブの部位に、ストッパー用リブと略直交する補強用リブを突設したことを特徴とし、ランプ装着時に口金の先端電極と接触する当接片の部位に対応するストッパー用リブの部位に、ストッパー用リブと略直交する補強用リブを設けているので、ストッパー用リブの強度を高めることができ、口金の先端電極によってストッパー用リブに荷重が加わったとしても、ストッパー用リブが破損することはなく、したがって口金の先端電極と底側接触子の当接片との接触圧力を高めることができ、且つ、補強用リブは各接触子に設けた突出片の間に配置されるので補強用リブによって両接触子間の絶縁距離を高めることができるという効果がある。
【００３７】
請求項６の発明は、ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成し、各接触子挿通孔はソケット本体を貫通し、各接触子挿通孔を介してソケット本体の裏面から外側に突出する両接触子の端子片により上記接続部を構成し、該端子片にソケット本体が実装される実装基板を仮保持するための仮保持片を切り起こしにより形成するとともに、各接触子挿通孔の端面に両接触子の表面とそれぞれ当接して仮保持片が側方へ移動するのを規制する規制用リブを設けたことを特徴とし、両接触子を接触子挿通孔に挿入する際に規制用リブが仮保持片の側方への移動を規制しているので、規制用リブによって仮保持片がガイドされ、組立作業性が向上するという効果がある。しかも、規制用リブの先端は両接触子の表面と当接しているので、接触子を含む平面内において接触子が移動するのを規制用リブによって規制することができ、組立作業時に仮保持片が接触子挿通孔の端面と当接して仮保持片が変形するのを防止することができるという効果もある。さらに組立後に端子片の位置が位置決めされるから、ソケット本体を基板に取り付ける作業を容易に行えるという効果がある。
【００３８】
請求項７の発明は、請求項６の発明において、接触子挿通孔及び仮保持片は、保持凹所の開口側から目視可能な位置に設けられたことを特徴とし、両接触子をソケット本体に取り付けた状態で、保持凹所の開口側から仮保持片の状態を目視することができ、仮保持片の見え方から両接触子の取付状態を確認し、不十分な取付状態となるのを防止できるという効果がある。
【図面の簡単な説明】
【図１】 本実施形態のねじ込みソケットを示す分解斜視図である。
【図２】 同上の上面図である。
【図３】 同上の側面図である。
【図４】 同上の下面図である。
【図５】 同上のねじ込みソケットを示し、図２のＡ−Ａ断面図である。
【図６】 同上のねじ込みソケットを示し、図２のＢ−Ｂ断面図である。
【図７】 同上のねじ込みソケットを示し、図２のＣ−Ｃ断面図である。
【図８】 同上のねじ込みソケットを示し、図２のＤ−Ｄ断面図である。
【図９】 同上のねじ込みソケットを示す要部断面図である。
【図１０】 同上をプリント基板に実装した状態を示す断面図である。
【図１１】 同上に用いる周側接触子の参考例を示す外観斜視図である。
【図１２】 同上に用いる周側接触子の別の参考例を示す外観斜視図である。
【図１３】 従来のねじ込みソケットを示す断面図である。
【図１４】 同上に用いる接触子を示し、（ａ）は接触子をソケット本体に組み込む前の状態を示す斜視図、（ｂ）は接触子をソケット本体に組み込んだ状態の斜視図である。
【図１５】 同上の別のねじ込みソケットを示す断面図である。
【符号の説明】
１ ソケット本体
２ 保持凹所
３ ねじ受け部
１０ 周側接触子
１４ 突出片
２０ 底側接触子
２４ 突出片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a screw socket for holding and supplying power to a lamp having an E-shaped base having a threaded portion provided on a peripheral surface.
[0002]
[Prior art]
In general lamps such as incandescent bulbs that are commercially available, E-type caps such as E11 and E12 (so-called Edison-based caps) are used. In this type of base, a screw portion that becomes an outer peripheral electrode is formed on the outer peripheral surface, and a tip electrode is provided at the center of the front end surface. As shown in FIGS. 13 and 14, the screw socket for holding the lamp having such a base includes a bottomed cylindrical socket body 1, and the lamp is inserted into the holding recess 2 inside the socket body 1. A base is inserted, and a screw receiving portion 3 that is screwed into a screw portion of the base is formed on the inner peripheral surface of the holding recess 2. Further, in the holding recess 2, a peripheral contact 10 formed of a conductive metal plate and in contact with the outer peripheral electrode of the base, and a bottom side contact formed of a conductive metal plate and in contact with the tip electrode of the base. The child 20 is disposed at a position opposite to the center of the socket body 1 (see, for example, Japanese Utility Model Publication No. 7-27077).
[0003]
Here, the bottom plate 4 of the holding recess 2 is provided with contact insertion holes 5a and 5b penetrating the bottom plate 4, and the contact insertion holes 5a and 5b are respectively provided with the circumferential contact 10 and the bottom contact. Each child 20 is fixed in a state where a part thereof is inserted. As shown in FIGS. 14 (a) and 14 (b), the peripheral contact 10 is formed in a substantially J shape in which the end of a substantially strip-shaped sheet metal is folded back, and the tip of one side piece is the outer periphery of the base. The contact piece 11 is in contact with the electrode. Further, on both side edges of the base portion of the side piece, there are protruding locking claw pieces 13 and 13 protruding sideways, respectively, and with respect to the locking claw pieces 13 and 13 on both side edges of the side piece. Protruding pieces 14, 14 projecting sideways are projected from a portion on the contact piece 11 side. The lower surface of each locking claw piece 13 is inclined so that the amount of protrusion to the side increases from the base side (lower side) to the distal end side (upper side) of the side piece. Is substantially orthogonal to the vertical direction of the side piece. Thus, when the bent portion of the peripheral contact 10 is inserted into the contact insertion hole 5a formed in the bottom plate 4 of the holding recess 2 from above, the locking claw piece 13 is inserted into the contact insertion hole 5a. Then, the peripheral portion of the contact insertion hole 5 a is sandwiched between the protruding piece 14 and the locking claw piece 13, and the peripheral contact 10 is fixed to the bottom plate 4 of the holding recess 2. The bottom contact 20 is similarly fixed to the bottom plate 4 of the holding recess 2.
[0004]
[Problems to be solved by the invention]
In the screw socket having the above configuration, the peripheral contact 10 is fixed to the bottom plate 4 of the holding recess 2 by sandwiching the peripheral portion of the contact insertion hole 5 a between the protruding piece 14 and the locking claw piece 13. Since the protruding piece 14 and the locking claw piece 13 protrude to the side of the circumferential contact 10, the circumferential contact 10 does not tilt in the plane including the circumferential contact 10. Since there is a clearance between the circumferential contact 10 and the contact insertion hole 5a in the direction substantially orthogonal to the plane including the circumferential contact 10, the circumferential side in the direction approximately orthogonal to the plane including the circumferential contact 10 There is a possibility that the contact 10 is inclined and the tip of the contact piece 11 falls to the center side of the holding recess 2. For this reason, when the lamp base is inserted into the holding recess 2 of the socket body 1, there is a problem that the tip of the contact piece 11 is caught by the base and the circumferential contact 10 is deformed. In addition, there is a clearance between the circumferential contact 10 and the contact insertion hole 5a, and the distance between the portion that fixes the circumferential contact 10 to the socket body 1 and the tip of the contact piece 11 is long. There is a possibility that the tip position of the contact piece 11 moves to the center side of the holding recess 2 and the insulation distance between the different poles cannot be secured.
[0005]
Furthermore, since the bottom contact 20 is in contact with the bottom plate 4 of the holding recess 2, the position of the bottom contact 20 may vary due to warpage of the bottom plate 4, burrs during molding, and the like. There is also a risk that the generated metal powder may accumulate between different electrodes and cause insulation failure. Further, when the lamp base is screwed into the holding recess 2, the contact piece 21 of the bottom contact 20 is pressed against the bottom plate 4 side of the holding recess 2 by the lamp base. In order to improve the contact stability with the contact piece 21, as shown in FIG. 15, a protrusion 39 protruding toward the contact piece 21 is formed on the bottom plate 4 facing the contact piece 21 of the bottom contact 20. A screw-in socket having a shape is also conventionally provided (see Japanese Patent Laid-Open No. 8-321369). However, since the protrusion 39 is only formed on the bottom plate 4, the protrusion 39 may buckle depending on the molding material of the socket body 1. There was a fear.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a screw-in socket capable of reliably positioning a contact. The purpose of the inventions of claims 5 to 8 is to provide a screw-in socket with improved insulation in addition to the above object, and the object of the inventions of claims 9 and 10 is a contact in addition to the above object. The object is to provide a screw-in socket with improved reliability.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, there is provided a holding recess for holding the base of the lamp, and a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base. A socket body formed on the peripheral surface, a peripheral contact element that is formed from a conductive sheet metal and is in electrical contact with an outer peripheral electrode provided on the peripheral surface of the base, and a tip end of the base formed from a conductive sheet metal A bottom contact that is in electrical contact with the tip electrode provided on the surface, and a connection for connecting the peripheral contact and the bottom contact to an external circuit, respectively. Each of the contacts is disposed in the holding recess with one end inserted from the opening side of the holding recess into the contact insertion hole provided on the bottom surface of the holding recess, and each contact fixed to the socket body. Projecting in a direction substantially perpendicular to the child part and toward the center of the holding recess Thereby to form each of the protruding pieces of the bottom surface abutting the retaining recesses on both contacts in a state where each contact is inserted into the corresponding contact through holeThe projecting piece is formed integrally from both side edges of each contact, and a guide rib that abuts the projecting piece from the side is formed on the inner surface of the holding recess.With the characteristicsTo do. According to this inventionEach contact is provided with a protruding piece that protrudes in a direction substantially perpendicular to the planar direction of each contact and toward the center of the holding recess, and each contact has a corresponding contact insertion hole. When inserted, the projecting piece provided on each contact makes contact with the bottom surface of the holding recess, so that each contact can be reliably positioned. Therefore, since each contact does not fall to the center of the holding recess, when the lamp base is screwed into the holding recess, the contact is caught on the tip of the base and the contact is not deformed. it can. Furthermore, by pressing the protruding piece provided on the contactor, the assembly work of the contactor can be performed, so that the part of the contactor that contacts the base during the assembly work is not deformed, resulting in an assembly failure. Can be prevented.
[0008]
  Furthermore, according to the invention of claim 1,Protruding pieceButIt is formed continuously from both side edges of each contact.And since it is guided from the side by the rib for guide,The contact tilts in the plane containing the contactIn addition, since the number of parts does not increase, the labor of assembly can be reduced.
[0011]
  Claim2In the invention ofA socket body having a holding recess for holding the base of the lamp and having a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base, formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. The projecting piece abuts on the bottom surface of the retention recesses in the input state is formed on both contacts,The circumferential contact and the bottom contact are arranged at positions facing each other across the center of the holding recess. The bottom contact includes a fixed piece fixed to the socket body, and a holding recess in the fixed piece. A contact piece that protrudes from one end of the opening side toward the peripheral contact and comes into contact with the tip electrode of the base, and a mounting part for the peripheral contact and a mounting part for the bottom contact on the bottom surface of the holding recess A rib for stopper that protrudes toward the back side of the abutting piece and restricts the abutting piece from moving to a bottom side from a predetermined position in the holding recess protrudes from the bottom surface. The height of the rib for the stopper is made higher than that of other parts on the bottom surface, and both side edges of the rib for the stopper are brought into contact with the surfaces of the circumferential contact and the bottom contact, respectively.To do. According to this inventionSince both side edges of the stopper rib are in contact with the surfaces of both contacts, both contacts are prevented from falling to the center of the holding recess, and the insulation distance between the contacts is shortened. Since the height of the stopper rib from the bottom surface of the holding recess is made higher than that of other parts on the bottom surface, the metal powder generated from the base is lower than the stopper rib. Since it accumulates on the bottom of the metal powder, it is difficult for the metal powder to collect between the two contacts, and it is possible to prevent an insulation failure between the two contacts.
[0012]
  Claim3In the invention of claim2In this invention, the width of the stopper rib is made narrower than the width of the abutting piece, the base of the lamp is screwed into the holding recess, and the abutting piece of the bottom contactor is screwed into the stopper rib. When the contact rib is pressed against the end face, the width of the stopper rib is narrower than the width of the contact piece, so that the contact pressure between the tip electrode of the base and the contact piece of the bottom contact can be increased, and Since the contact area between the stopper rib and the contact piece is small, the position of the contact piece of the bottom contactor does not vary due to warping of the bottom surface of the holding recess or flash during molding, etc. Contact reliability with the bottom contact can be improved.
[0013]
  Claim4In the invention of claim2In the invention, the end face on the opening side of the holding recess in the stopper rib is substantially parallel to the bottom surface of the holding recess, and when the lamp cap is screwed into the holding recess, the bottom contact The contact piece can be elastically deformed to a position substantially orthogonal to the fixed piece.
[0014]
  Claim5In the invention of claim2According to the invention, a reinforcing rib substantially perpendicular to the stopper rib protrudes from a portion of the stopper rib corresponding to the contact portion of the contact piece with the tip electrode. Since the reinforcing ribs that are substantially orthogonal to the stopper ribs are provided at the stopper rib portions corresponding to the contact piece portions that come into contact with the stopper ribs, the strength of the stopper ribs can be increased. Even if a load is applied to the stopper rib, the stopper rib will not be damaged. Therefore, the contact pressure between the tip electrode of the base and the contact piece of the bottom contact can be increased, and the reinforcing rib. Is disposed between the protruding pieces provided on each contact, so that the insulation distance between the two contacts can be increased by the reinforcing rib.
[0015]
  Claim6In the invention ofA socket body having a holding recess for holding the base of the lamp and having a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base, formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. The projecting piece abuts on the bottom surface of the retention recesses in the input state is formed on both contacts,Each contact insertion hole penetrates the socket body, and the connection portion is constituted by the terminal pieces of both contacts protruding outward from the back surface of the socket body through each contact insertion hole, and the socket body is connected to the terminal piece. A temporary holding piece for temporarily holding the mounting substrate to be mounted is formed by cutting and raising, and the temporary holding piece moves to the side by abutting the end surfaces of each contactor insertion hole with the surfaces of both contacts. Since the restriction rib restricts the movement of the temporary holding piece to the side when the both contactors are inserted into the contactor insertion holes, the restriction rib is provided. As a result, the temporary holding piece is guided to improve the assembly workability. In addition, since the tips of the regulating ribs are in contact with the surfaces of both contacts, the movement of the contacts in the plane including the contacts can be regulated by the regulating rib, and the temporary holding piece during assembly work. Can be prevented from coming into contact with the end face of the contact hole and deforming the temporary holding piece. Furthermore, since the position of the terminal piece is positioned after assembly, the work of attaching the socket body to the board can be easily performed.
[0016]
  Claim7In the invention of claim6In this invention, the contact insertion hole and the temporary holding piece are provided at a position that can be seen from the opening side of the holding recess, and in a state where both the contacts are attached to the socket body, The state of the temporary holding piece can be visually observed from the opening side, and the attachment state of the two contacts can be confirmed from the way the temporary holding piece is seen, thereby preventing an insufficient attachment state.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The screw socket according to this embodiment will be described with reference to FIGS. This screw-in socket holds a lamp 50 having an E-type base 51 such as E11, E12, etc., in which a screw portion 52 serving as an outer peripheral electrode is formed on the outer peripheral surface, and a tip electrode 53 is provided at the center of the front end surface. Used to supply power. This screwed socket includes a bottomed cylindrical resin socket body 1 in which a cap 51 of a lamp 50 is inserted into a holding recess 2 inside the socket body 1. A screw receiving portion 3 that is screwed into the screw portion 52 of the base 51 is formed on the inner peripheral surface. The screw receiving portion 3 has groove portions 6a, which are formed along the inner peripheral surface of the holding recess 2 over approximately the entire length in the center line direction of the socket body 1 at two locations in the circumferential direction of the socket body 1. It is formed in a shape that is divided by 6b. The circumferential contact 10 that contacts the threaded portion (outer peripheral electrode) 52 of the base 51 is disposed in one groove 6a, and the bottom contact that contacts the tip electrode 53 of the base 51 in the other groove 6b. 20 is arranged. A positioning projection 1a for positioning the socket body 1 on the printed circuit board is provided on the rear surface of the socket body 1.
[0018]
Here, each of the circumferential contact 10 and the bottom contact 20 has one end inserted from the opening side of the holding recess 2 into the contact insertion holes 5a and 5b provided in the bottom plate 4 of the holding recess 2, respectively. In the state, it is arranged in the holding recess 2.
[0019]
The peripheral contact 10 is formed of a long conductive metal plate, and is provided with an abutting piece 11 in contact with the outer peripheral electrode of the base at one end and for soldering to the printed circuit board at the other end. Connecting pieces (terminal pieces) 12 are provided. At the approximate center of the peripheral contact 10, it protrudes toward the inner peripheral surface of the holding recess 2, and is engaged with the lower surface of the bottom plate 4 of the holding recess 2 in a state where the peripheral contact 10 is inserted into the contact insertion hole 5 a. A locking claw piece 13 to be stopped is formed by cutting and raising a part of the circumferential contact 10. Further, from both side edges of the portion on the contact piece 11 side with respect to the locking claw piece 13 in the circumferential contact 10, the holding recess is substantially orthogonal to the portion of the circumferential contact 10 fixed to the socket body 1. A pair of projecting pieces 14 and 14 projecting in the direction toward the center of the location 2 and abutting the bottom plate 4 of the holding recess 2 in a state where the circumferential contact 10 is inserted into the contact insertion hole 5a are formed by cutting and raising. Has been. Further, one side edge of the connection piece 12 is used to temporarily hold the connection piece 12 by being locked with the end edge of the through hole when the connection piece 12 is inserted into the through hole formed in the printed board. The temporary holding piece 15 is formed by cutting and raising. Note that the tip of the abutting piece 11 is inclined so as to approach the inner peripheral surface of the holding recess 2 toward the tip.
[0020]
The bottom contact 20 is formed from a long sheet metal having conductivity, and is inclined from one end of the fixed piece 26 fixed to the socket body 1 toward the center of the holding recess 2 to serve as a tip electrode of the base. An abutting piece 21 that contacts is provided, and a connecting piece (terminal piece) 22 for connecting to an external circuit is provided at the other end of the fixed piece 26. At the approximate center of the bottom contact 20, it protrudes toward the inner peripheral surface of the holding recess 2, and the bottom contact 20 is engaged with the lower surface of the bottom plate 4 of the holding recess 2 with the bottom contact 20 inserted into the contact insertion hole 5 b. A locking claw piece 23 is formed by cutting and raising a part of the bottom contact 20. Further, from both side edges of the portion on the contact piece 21 side with respect to the locking claw piece 23 in the bottom contact 20, it is substantially orthogonal to the planar direction of the bottom contact 20 and toward the center side of the holding recess 2. A pair of projecting pieces 24, 24 that project in the direction and come into contact with the bottom plate 4 of the holding recess 2 in a state where the bottom contact 20 is inserted into the contact insertion hole 5b are formed by cutting and raising. Further, at one side edge of the connection piece 22, when the connection piece 22 is inserted into a through hole formed in the printed board, the connection piece 22 is temporarily held on the printed board by being locked with the end edge of the through hole. The temporary holding piece 25 is formed by cutting and raising.
[0021]
Here, when attaching the circumferential contact 10 and the bottom contact 20 to the socket body 1, the locking claw pieces 13, 23 provided on the respective contacts 10, 20 are opposed to the inner circumferential surface of the holding recess 2. In this state, the projecting pieces 14 and 24 provided on both the contacts 10 and 20 are pressed with the tool 70, and the contacts 10 and 20 are inserted into the corresponding contact insertion holes 5a and 5a from the opening side of the holding recess 2. When inserted into 5 b, the locking claw pieces 13, 23 are brought into contact with the inner peripheral surface of the holding recess 2 and bent toward the center of the holding recess 2. When the two contacts 10 and 20 are further pushed into the bottom plate 4 side of the holding recess 2 from this state, the latching claw pieces 13 and 23 get over the bottom plate 4 of the holding recess 2 and end of the contact insertion holes 5a and 5b. Since it engages with the edge, both contacts 10 and 20 are prevented from coming off.
[0022]
At this time, the projecting pieces 14 and 24 of both the contacts 10 and 20 abut against the surface of the bottom plate 4, and the bottom plate 4 of the holding recess 2 is interposed between the locking claw pieces 13 and 23 and the projecting pieces 14 and 24. Since it is pinched, it is possible to restrict the movement of both contacts 10 and 20 in the direction of the center line of the socket body 1, and the clearance between the contacts 10 and 20 and the contact insertion holes 5a and 5b. Even if there is, the protruding pieces 14 and 24 of both the contacts 10 and 20 are in contact with the surface of the bottom plate 4, so that the tips of both the contacts 10 and 20 are inclined toward the center of the holding recess 2. Therefore, both the contacts 10 and 20 can be positioned reliably. Therefore, when the base 51 of the lamp 50 is inserted into the holding recess 2, the trouble that the tips of both the contacts 10, 20 are caught on the tip of the base 52 and the both contacts 10, 20 are deformed is prevented. can do. Further, when the both contacts 10, 20 are incorporated into the socket body 1, the projecting pieces 14, 24 provided on the both contacts 10, 20 are pressed by the tool 70, so that the contact with the base 51 of the lamp 50 is made. No external force is applied to the contact pieces 11, 21, and both contactors 10, 20 can be reliably fixed to the socket body 1 without the contact pieces 11, 21 being deformed.
[0023]
By the way, on the inner peripheral surface of the holding recess 2, as shown in FIGS. 2 and 6, the protruding pieces 14 of the two contactors 10 and 20 are attached in a state where the two contactors 10 and 20 are attached to the socket body 1. 24, a guide rib 31 abutting from the side is projected, and the pair of projecting pieces 14 and 24 provided on both contacts 10 and 20 and the surface of the bottom plate 4 come into contact with each other, and the projecting piece 14 , 24 and the guide rib 31 are in contact with each other, and the tips of both contacts 10, 20 in the tangential direction of the inner peripheral surface of the holding recess 2 (that is, the direction parallel to the plane including the contacts 10, 20). Can be prevented from tilting.
[0024]
Further, as shown in FIGS. 2, 5, and 7, the bottom plate 4 of the holding recess 2 is in contact with a portion between the mounting position of the circumferential contact 10 and the mounting position of the bottom contact 20. The piece 21 protrudes toward the back surface side, and the contact piece 21 moves to the bottom side from a predetermined position in the holding recess 2 (that is, the position where the contact piece 21 is substantially orthogonal to the fixed piece 26). Since the stopper rib 32 protrudes and the amount of deformation of the contact piece 21 when the lamp is mounted is limited by the stopper rib 32, the bottom contact 20 is prevented from being plastically deformed. Yes. Here, both side edges of the stopper rib 32 are in contact with the surfaces of the circumferential contact 10 and the bottom contact 20, respectively, and the tips of the circumferential contact 10 and the bottom contact 20 are the holding recesses 2. Inclination to the center side is restricted, and the insulation distance L1 between the circumferential contact 10 and the bottom contact 20 is insufficient, so that the insulation can be prevented from deteriorating. In addition, the end face of the stopper rib 32 on the opening side of the holding recess 2 is formed substantially parallel to the bottom plate 4, and the end face of the stopper rib 32 is substantially the same as the connecting portion between the contact piece 21 and the fixed piece 26. It is formed at a height. Therefore, when the base 51 of the lamp 50 is screwed into the holding recess 2, the tip electrode 53 of the base 51 is elastically deformed until the contact piece 21 of the bottom contact 20 contacts the end surface of the stopper rib 32. The position of the contact piece 21 of the bottom contact 20 when the lamp is mounted is indicated by a two-dot chain line in FIG.
[0025]
Since the width dimension of the end face of the stopper rib 32 is smaller than the width dimension of the contact piece 21 of the bottom contact 20, the contact pressure between the tip electrode 53 of the base 51 and the contact piece 21. Compared with the case where the contact piece 21 is in contact with the surface of the bottom plate 4, the contact reliability is improved due to being less susceptible to burrs generated during molding. In addition, since portions other than the ribs 32 in the bottom plate 4 are formed substantially flush with each other, the bottom plate 4 has a bottom surface that is substantially the same as the width of the contact piece 21 of the bottom contact 20 as compared with the bottom plate 4. Even if the creeping distance between the contact piece 21 of the side contact 20 and the protruding piece 14 of the peripheral contact 10 can be increased and the metal powder of the base 51 is generated, the metal powder is more than the stopper rib 32. Therefore, the insulation distance L2 between the circumferential contact 10 and the bottom contact 20 can be sufficiently secured.
[0026]
Here, the stopper rib 32 is provided with a reinforcing rib 33 protruding substantially at the center of the holding recess 2 and substantially orthogonal to the stopper rib 32, and comes into contact with the tip electrode 53 of the base 51 in the stopper rib 32. Since the reinforcing rib 33 is formed at the site, the strength of the rib 32 can be increased, and even if an external force is applied to the rib 32 when the base 51 is screwed into the holding recess 2, the rib 32 is damaged. Therefore, the contact pressure between the tip electrode 53 of the base 51 and the bottom contact 20 can be increased, and the contact reliability is improved. In addition, since the reinforcing rib 33 is disposed between the protruding pieces 14 and 24 of both the contacts 10 and 20, the insulating distance between the both contacts 10 and 20 can be increased by the reinforcing rib 33.
[0027]
As shown in FIGS. 4, 5 and 7, the contact insertion holes 5a and 5b are in contact with the surfaces of the connection pieces 12 and 22 of both contacts 10 and 20, respectively, and the temporary holding pieces 15 and 25 are on the side. A restricting rib 34 that restricts the movement toward the projection protrudes, and when the both contacts 10 and 20 are inserted into the contact insertion holes 5a and 5b, the restricting rib 34 is temporarily attached to the temporary holding pieces 15 and 25. Therefore, the temporary holding pieces 15 and 25 are guided by the regulating rib 34, and the assembling workability is improved. In addition, since the tips of the regulating ribs 34 are in contact with the surfaces of the two contactors 10, 20, the regulation ribs 34 restrict the movement of the contacts 10, 20 within the plane including the contacts 10, 20. It is possible to prevent the temporary holding pieces 15 and 25 from coming into contact with the end faces of the contact insertion holes 5a and 5b during the assembly operation. Furthermore, since the positions of the connecting pieces 12 and 22 are positioned by the regulating rib 34 after assembly, the work of attaching the socket body 1 to the printed circuit board 60 can be easily performed. Further, since the contact insertion holes 5a and 5b and the temporary holding pieces 12 and 22 are provided at positions where they can be seen from the opening side of the holding recess 2, both contactors are seen by the way the temporary holding pieces 12 and 22 are seen. The installation state of 10, 20 can be confirmed, and an insufficient installation state can be prevented. In this embodiment, an example in which the invention of claim 9 is applied to a lamp socket is described. However, the connection pieces 12 and 22 soldered to the printed board 60 with solder 61 are temporarily fixed to the printed board 60. The temporary holding pieces 15 and 25 are provided by cutting and raising, and the contact ribs are inserted through the regulating ribs 34 which are in contact with both the contacts 10 and 20 respectively and restrict the temporary holding pieces 15 and 25 from moving sideways. About the point provided in hole 5a, 5b, it is applicable also to general mounting components like the terminal block mounted in the printed circuit board 60. FIG.
[0028]
  still,11 and 12 show a reference example of the present invention. In the example shown in FIG.The protruding piece 14 (24) is formed by cutting and raising only from one side piece of the contact 10 (20).is there. In the example shown in FIG.Cut and raise the center of the contacts 10 and 20 to form the protruding piece 14 (24)Yes,By forming the projecting pieces 14 and 24 integrally with both the contacts 10 and 20, the number of parts can be reduced and the time and effort of assembly can be reduced.
[0029]
【The invention's effect】
  As described above, the invention of claim 1 includes a holding recess for holding the base of the lamp, and the screw receiving portion that is screwed into the screw portion formed on the peripheral surface of the base is formed on the inner peripheral surface of the holding recess. A formed socket body, a peripheral contact that is formed from a conductive metal plate and is in contact with an outer peripheral electrode provided on the peripheral surface of the base, and a conductive metal plate that is provided on the front end surface of the base. A bottom contact that is in electrical contact with the tip electrode, and a connection for connecting the peripheral contact and the bottom contact to an external circuit, respectively. The peripheral contact and the bottom contact are: Each of the contact parts fixed to the socket body is disposed in the holding recess with one end inserted from the opening side of the holding recess into the contact insertion hole provided on the bottom surface of the holding recess. And projecting in a direction substantially perpendicular to the center of the holding recess, Each form a bottom surface and a projecting piece abuts the retention recesses on both contacts in a state where the contacts are inserted into the corresponding contact through holeThe projecting piece is formed integrally from both side edges of each contact, and a guide rib that abuts the projecting piece from the side is formed on the inner surface of the holding recess.With the characteristicsTo do. According to this inventionEach contact is provided with a protruding piece that protrudes in a direction substantially perpendicular to the planar direction of each contact and toward the center of the holding recess, and each contact has a corresponding contact insertion hole. When inserted, the projecting piece provided on each contact comes into contact with the bottom surface of the holding recess, so that the contact can be reliably positioned. Therefore, since each contact does not fall to the center of the holding recess, when the lamp base is screwed into the holding recess, the contact is caught on the tip of the base and the contact is not deformed. There is also an effect that you can. Furthermore, by pressing the protruding piece provided on the contactor, the assembly work of the contactor can be performed, so that the part of the contactor that contacts the base during the assembly work is not deformed, resulting in an assembly failure. There is also an effect that can be prevented.
[0030]
  Furthermore, according to the invention of claim 1,Protruding pieceButIt is formed continuously from both side edges of each contact.And, since the protruding piece is guided from the side by the guide rib,The contact tilts in the plane containing the contactIn addition, since the number of parts does not increase, the labor of assembly can be reduced.
[0033]
  Claim2The invention ofA socket body having a holding recess for holding the base of the lamp and having a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base, formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. The projecting piece abuts on the bottom surface of the retention recesses in the input state is formed on both contacts,The circumferential contact and the bottom contact are arranged at positions facing each other across the center of the holding recess. The bottom contact includes a fixed piece fixed to the socket body, and a holding recess in the fixed piece. A contact piece that protrudes from one end of the opening side toward the peripheral contact and comes into contact with the tip electrode of the base, and a mounting part for the peripheral contact and a mounting part for the bottom contact on the bottom surface of the holding recess A rib for stopper that protrudes toward the back side of the abutting piece and restricts the abutting piece from moving to a bottom side from a predetermined position in the holding recess protrudes from the bottom surface. The height of the stopper rib is higher than other parts on the bottom surface, and both side edges of the stopper rib are in contact with the surface of the peripheral contact and the bottom contact, respectively. Both side edges of the rib are in contact with the surface of both contacts The height of the rib for stopper from the bottom of the holding recess can be prevented by preventing both contacts from falling to the center of the holding recess and the insulation distance between the contacts can be reduced. Since the metal powder generated from the base accumulates on the bottom surface of the holding recess, which is lower than the stopper rib, the metal powder is less likely to collect between the two contactors. There is an effect that it is possible to prevent the occurrence of poor insulation.
[0034]
  Claim3The invention of claim2In this invention, the width of the stopper rib is made narrower than the width of the abutting piece, the base of the lamp is screwed into the holding recess, and the abutting piece of the bottom contactor is screwed into the stopper rib. When the contact rib is pressed against the end face, the width of the stopper rib is narrower than the width of the contact piece, so that the contact pressure between the tip electrode of the base and the contact piece of the bottom contact can be increased, and Since the contact area between the stopper rib and the contact piece is small, the position of the contact piece of the bottom contactor does not vary due to warping of the bottom surface of the holding recess or flash during molding, etc. There is an effect that the contact reliability with the bottom contact is improved.
[0035]
  Claim4The invention of claim2In the invention, the end face on the opening side of the holding recess in the stopper rib is substantially parallel to the bottom surface of the holding recess, and when the lamp cap is screwed into the holding recess, the bottom contact There is an effect that the contact piece can be elastically deformed to a position substantially orthogonal to the fixed piece.
[0036]
  Claim5The invention of claim2According to the invention, a reinforcing rib substantially perpendicular to the stopper rib protrudes from a portion of the stopper rib corresponding to the contact portion of the contact piece with the tip electrode. Since the reinforcing ribs that are substantially orthogonal to the stopper ribs are provided at the stopper rib portions corresponding to the contact piece portions that come into contact with the stopper ribs, the strength of the stopper ribs can be increased. Even if a load is applied to the stopper rib, the stopper rib will not be damaged. Therefore, the contact pressure between the tip electrode of the base and the contact piece of the bottom contact can be increased, and the reinforcing rib. Is arranged between the protruding pieces provided on each contact, so that there is an effect that the insulation distance between the two contacts can be increased by the reinforcing rib.
[0037]
  Claim6The invention ofA socket body having a holding recess for holding the base of the lamp and having a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base, formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. The projecting piece abuts on the bottom surface of the retention recesses in the input state is formed on both contacts,Each contact insertion hole penetrates the socket body, and the connection portion is constituted by the terminal pieces of both contacts protruding outward from the back surface of the socket body through each contact insertion hole, and the socket body is connected to the terminal piece. A temporary holding piece for temporarily holding the mounting substrate to be mounted is formed by cutting and raising, and the temporary holding piece moves to the side by abutting the end surfaces of each contactor insertion hole with the surfaces of both contacts. Since the restriction rib restricts the movement of the temporary holding piece to the side when the both contactors are inserted into the contactor insertion holes, the restriction rib is provided. As a result, the temporary holding piece is guided and the assembly workability is improved. In addition, since the tips of the regulating ribs are in contact with the surfaces of both contacts, the movement of the contacts in the plane including the contacts can be regulated by the regulating rib, and the temporary holding piece during assembly work. There is also an effect that it is possible to prevent the temporary holding piece from deforming due to contact with the end face of the contact hole. Furthermore, since the position of the terminal piece is positioned after assembly, there is an effect that the operation of attaching the socket body to the board can be easily performed.
[0038]
  Claim7The invention of claim6In this invention, the contact insertion hole and the temporary holding piece are provided at a position that can be seen from the opening side of the holding recess, and in a state where both the contacts are attached to the socket body, There is an effect that the state of the temporary holding piece can be visually observed from the opening side, the attachment state of both contacts can be confirmed from the way of viewing the temporary holding piece, and the insufficient attachment state can be prevented.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a screw socket according to an embodiment.
FIG. 2 is a top view of the same.
FIG. 3 is a side view of the above.
FIG. 4 is a bottom view of the above.
FIG. 5 is a cross-sectional view taken along the line AA of FIG.
6 is a cross-sectional view taken along the line BB of FIG.
7 is a cross-sectional view taken along the line CC of FIG.
FIG. 8 is a cross-sectional view taken along the line DD of FIG.
FIG. 9 is a cross-sectional view of a main part showing the screw socket according to the same.
FIG. 10 is a cross-sectional view showing a state in which the above is mounted on a printed circuit board.
[Fig. 11] Used for the same as aboveA reference example of the peripheral contactIt is an external perspective view.
[Fig. 12] Used for the same as aboveAnother reference example of the circumferential contactIt is an external perspective view.
FIG. 13 is a cross-sectional view showing a conventional screw socket.
14A is a perspective view showing a state before the contactor is assembled in the socket body, and FIG. 14B is a perspective view showing a state where the contactor is incorporated in the socket body. FIG.
FIG. 15 is a cross-sectional view showing another screw socket according to the above.
[Explanation of symbols]
  1 Socket body
  2 Retention recess
  3 Screw receiving part
  10 Contact on the circumference side
  14 Protruding piece
  20 Bottom contact
  24 Projection piece

Claims (7)

ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成してあり、前記突出片は、各接触子の両側縁から連続一体に形成され、突出片に側方から当接するガイド用リブを保持凹所の内面に形成したことを特徴とするねじ込みソケット。A socket body having a holding recess for holding a lamp base and having a screw receiving portion screwed into a screw portion formed on the peripheral surface of the base formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. Yes respectively formed a protruding piece which abuts the bottom surface of the retention recesses in the input state to both contacts, the protruding piece is formed continuously and integrally from the opposite side edges of each contact, laterally projecting portions A screw socket, characterized in that guide ribs that abut are formed on the inner surface of the holding recess . ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成し、周側接触子と底側接触子とは保持凹所の中心を挟んで対向する位置に配置されており、底側接触子は、ソケット本体に固定される固定片と、固定片における保持凹所の開口側の一端部から周側接触子側へ突出し口金の先端電極と接触する当接片とを有し、保持凹所の底面における周側接触子の取付部位と底側接触子の取付部位との間の部位に、前記当接片の裏面側に向かって突出し前記当接片が保持凹所内の所定位置よりも底面側へ移動するのを規制するストッパー用リブを突設し、底面からのストッパー用リブの高さ寸法を底面における他の部位よりも高くし、ストッパー用リブの両側縁を周側接触子及び底側接触子の表面とそれぞれ接触させて成ることを特徴とするねじ込みソケット。 A socket body having a holding recess for holding the base of the lamp and having a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base, formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. A protruding piece that contacts the bottom surface of the holding recess in the inserted state is formed on each contact, and the circumferential contact and the bottom contact are arranged at positions facing each other across the center of the holding recess. The bottom contactor includes a fixed piece fixed to the socket body, and a contact piece that protrudes from one end of the holding recess on the opening side of the holding recess to the peripheral contactor side and contacts the tip electrode of the base. And a portion between the peripheral contact attachment portion and the bottom contact attachment portion on the bottom surface of the holding recess, which protrudes toward the back side of the contact piece, and the contact piece is in the holding recess. The stopper rib that restricts the movement to the bottom side from the predetermined position is projected, the height of the stopper rib from the bottom surface is made higher than the other parts on the bottom surface, and both side edges of the stopper rib are Contact with the surface of the circumferential contact and the bottom contact Screw the socket to the butterflies. ストッパー用リブの幅寸法を、上記当接片の幅寸法よりも狭くしたことを特徴とする請求項２記載のねじ込みソケット。The screw socket according to claim 2 , wherein a width dimension of the stopper rib is narrower than a width dimension of the contact piece . ストッパー用リブにおける保持凹所の開口側の端面を保持凹所の底面と略平行としたことを特徴とする請求項２記載のねじ込みソケット。 3. The screw socket according to claim 2, wherein an end face of the holding recess in the stopper rib on the opening side is substantially parallel to the bottom surface of the holding recess . 当接片における先端電極との接触部位に対応するストッパー用リブの部位に、ストッパー用リブと略直交する補強用リブを突設したことを特徴とする請求項２記載のねじ込みソケット。 3. The screw socket according to claim 2, wherein a reinforcing rib that is substantially orthogonal to the stopper rib protrudes from a portion of the stopper rib corresponding to the contact portion with the tip electrode in the contact piece . ランプの口金を保持する保持凹所を具備し口金の周面に形成されたねじ部に螺合するねじ受け部が保持凹所の内周面に形成されたソケット本体と、導電性を有する板金から形成され口金の周面に設けた外周電極に電気的に接触する周側接触子と、導電性を有する板金から形成され口金の先端面に設けた先端電極に電気的に接触する底側接触子と、周側接触子及び底側接触子をそれぞれ外部回路に接続するための接続部とを備え、周側接触子及び底側接触子は、それぞれ、保持凹所の底面にそれぞれ設けた接触子挿通孔に保持凹所の開口側から一端部を挿入した状態で保持凹所内に配置されており、ソケット本体に固定される各接触子の部位と略直交し且つ保持凹所の中心側に向かう方向に突出すると共に、各接触子が対応する接触子挿通孔に挿入された状態で保持凹所の底面と当接する突出片を両接触子にそれぞれ形成し、各接触子挿通孔はソケット本体を貫通し、各接触子挿通孔を介してソケット本体の裏面から外側に突出する両接触子の端子片により上記接続部を構成し、該端子片にソケット本体が実装される実装基板を仮保持するための仮保持 片を切り起こしにより形成するとともに、各接触子挿通孔の端面に両接触子の表面とそれぞれ当接して仮保持片が側方へ移動するのを規制する規制用リブを設けたことを特徴とするねじ込みソケット。 A socket body having a holding recess for holding the base of the lamp and having a screw receiving portion that is screwed into a screw portion formed on the peripheral surface of the base, formed on the inner peripheral surface of the holding recess, and a conductive metal plate A peripheral contact that is in contact with the outer peripheral electrode formed on the peripheral surface of the base and is electrically contacted with a distal electrode that is formed of conductive sheet metal and is provided on the distal end surface of the base. And a connection part for connecting the peripheral contact and the bottom contact to the external circuit, respectively, and the peripheral contact and the bottom contact are respectively provided on the bottom surface of the holding recess. It is arranged in the holding recess with one end inserted from the opening side of the holding recess into the child insertion hole, substantially perpendicular to the part of each contact fixed to the socket body and on the center side of the holding recess And projecting in the direction of heading, and each contact is inserted into the corresponding contact insertion hole. A protruding piece that contacts the bottom surface of the holding recess in the inserted state is formed on both contactors, and each contactor insertion hole penetrates the socket body, and the outside from the back surface of the socket body through each contactor insertion hole. The above-mentioned connecting portion is constituted by the terminal pieces of both contacts protruding to the side, and the temporary holding pieces for temporarily holding the mounting substrate on which the socket body is mounted are formed by cutting and raising the terminal pieces, A screw socket , characterized in that a regulation rib is provided on the end face of the hole so as to abut against the surfaces of both contactors to restrict the temporary holding piece from moving sideways . 接触子挿通孔及び仮保持片は、保持凹所の開口側から目視可能な位置に設けられたことを特徴とする請求項６記載のねじ込みソケット。7. The screw socket according to claim 6 , wherein the contact insertion hole and the temporary holding piece are provided at a position that can be seen from the opening side of the holding recess .
JP37382799A 1999-12-28 1999-12-28 Screw socket Expired - Fee Related JP3682193B2 (en)

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JP37382799A JP3682193B2 (en) 1999-12-28 1999-12-28 Screw socket

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JP3682193B2 true JP3682193B2 (en) 2005-08-10

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JP2008159490A (en) * 2006-12-25 2008-07-10 Inax Corp Socket

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