JP4120781B2

JP4120781B2 - Lamp socket and method for forming and assembling the same

Info

Publication number: JP4120781B2
Application number: JP2002223789A
Authority: JP
Inventors: 秀明齋藤
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Lighting Corp
Priority date: 2002-07-31
Filing date: 2002-07-31
Publication date: 2008-07-16
Anticipated expiration: 2022-07-31
Also published as: JP2004063417A

Description

【０００１】
【発明の属する技術分野】
この発明は、直管のランプを電気的接続及び機械的に保持し、照明器具に搭載するランプソケットに係り、特に組立が簡単でランプの着脱がし易いランプソケット及びその成形・組立方法に関する。
【０００２】
【従来の技術】
図１６は例えば、特開平６−３６８４１号公報に示された従来のランプソケットの分解斜視図である。図に示すように、ランプソケットは、前面にランプピン挿通孔２４を有する受け板（プランジャ）２１と、この受け板２１を進退自在に挿入する開口部２８を前面に有する前部ボディ２２と、端子収納箱部３３を有し、受け板２１と前部ボディ２２を収納し本体を形成する略箱体状の後部ボディ２３から構成される。
【０００３】
前部ボディ２２において、３２は電線挿入孔部、３４は周壁、３５は先端部にかしめ孔４０を有するかしめ用の筒部、５１は係止爪である。受け板２１は前部ボディ２２の開口部２８に挿入された状態で連結部２９を介して一体成形され、成形後連結部２９は分断されたものである。２６、２７は抜止め突起である。後部ボディ２３において、３６は周壁、４１は受け板２１を付勢する押圧ばね（図示せず）のばね受け突起、４２はかしめ孔４０にかしめられるかしめ突起、４５は係止爪５１が係止する係止孔である。
また、本体３１内には受け板２１のランプピン挿通孔２４の内側に設けられたランプピン接触部（図示せず）を一端に有するとともに電線接続端子部の端子収納箱部３３に収納される電線接続端子（図示せず）を他端に有する導電板が配設されている。
【０００４】
前部ボディ２２と受け板２１の成形は、図１７に示すように前部ボディ２２の電線挿入孔部３２側に設けた成形用のゲート部５６から、熱可塑性樹脂が注入されると前部ボディ２２が形成されていくが、前部ボディ２２の注入端は連結部２９であり、連結部２９に樹脂が到達すると、さらに連結部２９を樹脂が流れ受け板２１が形成され、最後に抜止め突起２７が形成され、これにより受け板２１を一体成形した前部ボディ２２が成形される。
そして、導電板および押圧ばねを内部に装填し、前部ボディ２２を後部ボディ２３に取付け、係止爪５１で係止孔４５に係止するとともに、かしめ突起４２をかしめ孔４０に挿入してかしめ、受け板２１の連結部２９を分断することにより組立が行われる。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記の従来のランプソケットでは、連結部２９の分断箇所が一定でなく、分断箇所が受け板２１のガイド部である開口部２８側寄りになったときは、図１８に示すように開口部２８と連結部２９の分断箇所が干渉し、受け板２１が開口部２８に引っかかり、スムーズに可動できず、ランプ着脱の作業性が悪くなるという問題があった。
また、連結部２９の分断箇所が開口部２８側寄りになり、受け板２１が軸方向に回転してズレたときは、開口部２８の内周縁の面と分断箇所が干渉し、受け板２１が傾き、ランプ着脱の作業性が悪くなるという問題があった。
【０００６】
この発明は上記の問題を解決するためになされたもので、組立が簡単で、受け板の連結部の分断箇所がガイド部と干渉せず、スムーズに可動でき、ランプ着脱の作業性がよいランプソケット及びその成形・組立方法を提供することを目的とする。
【０００７】
【課題を解決するための手段】
この発明に係るランプソケットは、前面にランプピン挿入孔と周壁に抜け止め片を有する略筒状の受け板と、前面に前記受け板を前後方向に移動可能に挿通する開口部と周壁に前記受け板に設けられた前記抜け止め片が係合するガイド部とを有する本体と、この本体の背面の開口部を閉塞するカバーと、使用時に、前記受け板が前記本体の前記ガイド部に沿って背面方向へ移動するときの最大移動範囲以上の位置で、前記抜け止め片と前記ガイド部を連結し、前記本体と前記受け板を一体成形するための少なくとも１つの連結部と、を備えたものである。
【０００８】
また、前面にランプピン挿入孔と周壁に抜け止め片を有する略筒状の受け板と、前面に前記受け板を前後方向に移動可能に挿通する開口部と周壁に前記受け板に設けられた前記抜け止め片が係合するガイド部とを有する本体と、この本体の背面の前記開口部を閉塞するカバーと、前記抜け止め片を前記本体の前記ガイド部以外の前記周壁と連結し、前記本体と前記受け板を一体成形するための少なくとも１つの連結部と、を備えたものである。
【０００９】
また、連結部は、分断し易い形状の分断部を備えたものである。
【００１０】
また、分断部は、抜け止め片と前記連結部の境界部近傍のあらかじめ定められた位置に設けたものである。
【００１１】
また、連結部の分断部を抜け止め片と連結部の境界部に設けたものである。
【００１２】
また、本体及び受け板は少なくとも、ガラス含有ＰＢＴかもしくはフイラ含有ＰＰの材料で形成したものである。
【００１３】
この発明に係るランプソケットの成形・組立方法は、前面にランプピン挿入孔と周壁に抜け止め片を有する略筒状の受け板と、この受け板に設けられた前記抜け止め片が係合するガイド部とを有する本体と、を有するランプソケットの成形と組立方法において、前記受け板が前記本体の前記ガイド部に沿って背面方向へ移動するときの最大移動範囲以上の位置で、前記抜け止め片と前記ガイド部を連結する少なくとも１つの連結部、前記本体及び前記受け板を一体成形し、成形後、前記連結部を前記ガイド部方向に押し込んで分断し、前記受け板の前記抜け止め片を前記ガイド部に挿入するものである。
【００１４】
また、前面にランプピン挿入孔と周壁に抜け止め片を有する略筒状の受け板と、この受け板に設けられた前記抜け止め片が係合するガイド部とを有する本体と、を有するランプソケットの成形と組立方法において、前記抜け止め片を前記本体の前記ガイド部以外の前記周壁と連結する少なくとも１つの連結部、前記本体及び前記受け板を一体成形し、成形後、前記受け板を周方向に回転させて連結部を分断し、前記本体のガイド部に前記受け板の前記抜け止め片を挿入するものである。
【００１５】
【発明の実施の形態】
実施の形態１．
図１はこの発明の実施の形態１を示すランプソケットの分解斜視図、図２は組立てた状態の部分破断背面図、図３はランプソケットの組立てた状態の断面図、図４は一体成形時の斜視図、図５は図４の連結部の部分破断側面図、図６は連結部とガイド部との関係を示す図、図７は使用時（組立後）の部分破断側面・断面図である。
【００１６】
図１〜５において、２は前面に一対のランプピン挿入孔９と周壁２ａに抜け止め片４を有する略筒状の受け板であり、周壁２ａと抜け止め片４は受け板２の両側に設けられており、２ｂは周壁２ａと交差する方向の両側に設けられた周壁である。３は前面に受け板２を前後方向に移動可能に挿通する開口部１０と周壁３ａに受け板２に設けられた抜け止め片４が係合するガイド部１１を周壁３ａに有する本体であり、６は本体３と受け板２を一体成形するための連結部であり、一体成形後、受け板側分断部６ａで分断したものであり、６ｄは本体側連結部である。１は本体３の背面の開口部を閉塞するカバーである。
なお、本体３及び受け板２は少なくとも、ガラス含有ＰＢＴかもしくはフイラ含有ＰＰの材料で形成したものである。
【００１７】
図２、３において１２は導電金具であり、ランプピン接触部１２ａ、電線接続部１２ｂ、導電金具可動部１２ｃから構成される。１３は電線挿入孔である。図５においてＬは受け板２の最大移動範囲を示す。
【００１８】
次に、受け板２と本体３の一体成形及び組立について図３〜７により説明する。
受け板２と本体３を一体成形するときは、使用時に受け板２が本体３のガイド部１１に沿って背面方向へ移動するときの最大移動範囲Ｌの位置で、抜け止め片４とガイド部１１を連結する連結部６となるように成形型の形状を決め成形する。
連結部６は一対の抜け止め片４の両端に各々２つ設けているが、図１〜５では連結部６の分断部６ａは受け板２と連結部６の境界部（受け板２側）に設けて、分断し易いように幅を他の部分より細く、または薄くしている。
【００１９】
成形時には、本体３の前面、後面用の金型及び連結部６用のサイドコア等を使用して成形する。金型に熱可塑性樹脂が注入口から注入されると、まず、本体３が形成され、次に、連結部６から樹脂が流れ受け板２が形成され、図４に示すように受け板２と本体３の一体成形品となる。
そして、成形後、受け板２をガイド部１１方向に押し込んで分断部６ａを分断し、図７に示すようにそのままガイド部１１に挿入する。
【００２０】
ここで、抜け止め片４がガイド部１１をスムーズに移動する条件について図６により説明する。
図６（ａ）は抜け止め片４と連結部６の境界部（受け板２側）に分断部６ａを設けた場合で図の左側が一体成形時の状態、右側が分断した場合を示す。ｄは本体３から分断部６ａまでの距離であり、ガイド部１１と抜け止め片４の間のクリアランスとなる。図６（ｂ）はガイド部１１と抜け止め片４との間に分断部６ａを設けた場合を示す。ｄはガイド部１１から分断部６ｂまでの距離であり、ガイド部１１と抜け止め片４の間のクリアランスとなる。
図６（ｃ）はガイド部１１と連結部６の境界部（ガイド部１１側）に分断部６ｃを設けた場合で、ガイド部１１から分断部６ｃまでの距離ｄがゼロで、ガイド部１１と抜け止め片４の間のクリアランスがゼロの場合である。
【００２１】
図６（ａ）、（ｂ）ではクリアランスは分断部６ａ、６ｂで決まり、ガイド部１１から分断部６ａまでの距離がクリアランス範囲内で適切になるように、分断部６ａ、６ｂをあらかじめ設定しておけば、連結部６が抜け止め片４の移動範囲にもないので、分断部６ａ、６ｂがガイド部１１にひっかかることがなく抜け止め片４がガイド部１１をスムーズに移動することができる。
【００２２】
しかし、図６（ｃ）ではガイド部１１から分断部６ｃまでの距離がゼロであり、クリアランスがゼロなので、分断部６ｃがガイド部１１にひっかかり、抜け止め片４がガイド部１１をスムーズに移動することができない。
【００２３】
この発明の実施の形態１では、図６（ａ）、（ｂ）に示すように、連結部６の分断部６ａ、６ｂは各々抜け止め片４と連結部６の境界部、または、境界部の近傍に設けるとともに、本体２から分断部６ａ、６ｂまでの距離がガイド部１１と抜け止め片４との間の適切なクリアランス範囲内となるように、分断部の位置、ガイド部１１の幅を設定したものである。
なお、クリアランスはなるべく小さいほうがガタが少なく抜け止め片４をスムーズに移動できるので、図６においては図６（ａ）よりクリアランスが小さい図６（ｂ）が抜け止め片４をスムーズに移動できる。
ただし、図６（ａ）において、連結部６の長さを小さくすることにより、クリアランスを小さくすれば、抜け止め片４に連結部６の残部が殆ど残らず、ガタも小さいので、図６（ｂ）より抜け止め片４がガイド部１１をよりスムーズに移動することができる
【００２４】
次に、ランプソケット全体の組立を図３、７により説明する。まず、分断した一対の受け板２の抜け止め片４を本体３のガイド部１１に支持したまま、導電金具１２のランプピン接触部１２ａを受け板２のランプピン挿入口９に取り付け、電線接続部１２ｂを電線挿入孔１３の先端部に取り付ける。受け板２は導電金具可動部１２ｃに付勢され、前面に移動し、図３、７に示すようにガイド部１１の前面部で抜け止め片４が止まり、本体３の開口部１０を塞ぐ。次に、カバー１を本体３の背面から被せて本体３に固定爪で固定する。
【００２５】
以上のように、ガイド部１１に沿って背面方向へ移動するときの最大移動範囲以上の位置で、抜け止め片４とガイド部１１を連結する少なくとも１つの連結部６、本体３及び受け板２を一体成形し、成形後、連結部６をガイド部１１方向に押し込んで分断し、受け板２の抜け止め片４をガイド部１１に挿入するので、組立を容易にすることができる。
また、分断部６ａは、抜け止め片４と連結部６の境界部近傍のあらかじめ定められた位置に設けたので、ガイド部１１と抜け止め片４のクリアランスを任意に設定でき、受け板２の抜け止め片４がガイド部１１と干渉せずスムーズに移動することができ、ランプ着脱の作業性をよくすることができる。
また、分断部６ａは、分断し易い形状としたので分断を容易にすることができる。
また、連結部６の分断部６ａを抜け止め片４と連結部６の境界部に設けたときは、抜け止め片４に連結部６の残部が殆ど残らず、受け板の傾きを少なくでき、ランプ保持を安定にすることができる。
また、本体３及び受け板２は少なくとも、ガラス含有ＰＢＴかもしくはフイラ含有ＰＰの材料で一体形成しているため、組立時の分断作業が容易にできる。
【００２６】
なお、本実施の形態では、一対の抜け止め片４とガイド部１１を連結する連結部６は、各々の抜け止め片４とガイド部１１の間に、２箇所ずつ設けているが、いずれか一方に１箇所設けてもよく、また、連結部６をランプ押し込み時に受け板２を最大に押し込んだ状態の位置に配設しているので、連結部６を２箇所以上設けることができる。
このように、複数設けることにより、成形時の樹脂流れをコントロールすることができ、連結部６をより薄肉に、または、細くすることも可能となり分断しやすくできる。また、流れの悪い材料も容易に使用することができる。
【００２７】
実施の形態２．
実施の形態１では、受け板２と本体３を一体成形するときに、使用時に受け板２が本体３のガイド部１１に沿って背面方向へ移動するときの最大移動範囲の位置に連結部６を設けるようにしたが、本実施の形態では、連結部の位置を、使用時の最大移動範囲の位置をさらに越えた位置に設けたものである。
図８はこの発明の実施の形態２を示すランプソケットの一体成形時の要部側面図、図９、１０は組立てた状態の（使用時の）部分破断側面・断面図である。
【００２８】
図８〜１０において、実施の形態１と異なる所は、ガイド部１１の長さを長くして、連結部６の位置を、使用時の最大移動範囲Ｌの位置を越えたＬ１の位置に設けた点であり、その他の構成は実施の形態１と同じであり説明を省略する。
この構成において、受け板２と本体３を一体成形するときは、図８に示すように、連結部６の位置を、使用時の最大移動範囲Ｌの位置をさらに越えた位置に設定し、本体３の前面、後面用の金型及び連結部６用のサイドコア等を使用して実施の形態１と同様に成形する。そして、成形後、受け板２をガイド部１１方向に押し込んで分断部６ａを分断し、図９に示すようにそのままガイド部１１に挿入する。
使用時には、図１０に示すように使用時の最大移動範囲Ｌの範囲で受け板２の抜け止め片４がガイド部１１を移動する。
【００２９】
以上のように、実施の形態１のように使用時の最大移動範囲Ｌの位置を越えたＬ１の位置に設けたとき、最大の範囲Ｌに受け板２を押し込んだとき、分断部６ａでバリ等が残っていると、抜け止め４とガイド部１１の干渉が多少生じるが、この実施の形態では、最大の範囲Ｌに受け板２を押し込んでも、分断部が抜け止め４から離れたところにあり、受け板２の抜け止め片４が本体のガイド部１１と干渉せずよりスムーズに移動することができ、ランプ着脱の作業性をよくすることができる。
【００３０】
実施の形態３．
図１１はこの発明の実施の形態３を示すランプソケットの組立てた状態の部分破断背面図、図１２は一体成形時の要部背面図、図１３は一体成形時の分解斜視図、図１４は図１２の連結部の側面図、図１５は使用時（組立後）の部分破断側面・断面図である。
図１１〜１５において実施の形態１の図１〜４と同一、または、同等の部分には同一の符号を付し説明を省略する。
図１１〜１５において１４は本体３に設けられ、受け板２の一対の抜け止め片４が各々係合する一対のガイド部である。図１３、１４において１６、１７は成形時に連結部６を成形するために必要なサイドコア用切欠部であり、ガイド部１４方向と直交する方向の周壁３ａの背面側に設けられている。
【００３１】
次に、受け板２と本体３の一体成形及び組立について説明する。本実施の形態では連結部６を分断するときに、図１２に示すように矢印方向に回転して行うがこの回転方向は連結部６が分断し易い方向に定め、また、この方向に抜け止め片４と干渉する周壁３ａがないように本体３の形状を定めている。
受け板２と本体３を一体成形するときは、図１２に示すように、サイドコア用切欠部１６、１７の対向する２辺の回転方向とは逆の辺の背面側端部の各々と、抜け止め片４が連結される連結部６となるように成形型の形状を決め成形する。連結部６の分断部６ａは受け板２と連結部６の境界部（受け板２側）に設けて、分断し易いように幅を他の部分より細く、または薄くしている。
【００３２】
成形時には、実施の形態１と同様に行い、受け板２と本体３の一体成形品となる。そして、成形後の組立は、受け板２を図１２に示すように矢印方向に回転して連結部６を分断部６ａで分断し、本体３のガイド部１４に受け板２の抜け止め片４を挿入し、導電金具１２（図３）を実施の形態１と同様に取り付ける。受け板２は導電金具可動部１２ｃに付勢され、前面に移動し、図１５に示すようにガイド部１４の前面部で抜け止め片４が止まり、本体３の開口部１０を塞ぐ。
次に、カバー１を本体３の背面から被せて本体３に固定爪で固定する。
【００３３】
連結部６の分断部６ａは、実施の形態１と同様に、抜け止め片４と連結部６の境界部、または、境界部の近傍（図６（ｂ）参照）に設けるとともに、本体２から分断部６ａまでの距離がガイド部１４と抜け止め片４との間のクリアランス範囲内となるように、分断部の位置、ガイド部１４の幅を設定する。
【００３４】
以上のように、抜け止め片４をガイド部１４以外の周壁３ａと連結する少なくとも１つの連結部６、本体３及び受け板２を一体成形し、成形後、受け板２を周方向に回転させて連結部６を分断し、ガイド部１４に抜け止め片４を挿入するので、組立を容易にすることができる。
また、受け板２の抜け止め片４が本体のガイド部１４と干渉せず、スムーズに移動することができ、ランプ着脱の作業性をよくすることができる。
また、一体成形時の連結部６の前後方向の位置の制約も少なく、成形と組立時の受け板２の抜け止め片４とガイド部１４の配置を自由にできるため、本体３のスペースの余裕がある部分に配置でき、小型化をすることができる。
【００３５】
なお、本実施の形態では、ガイド部１４方向と直交する方向の周壁３ａの背面側に設けたサイドコア用切欠部１６、１７に連結部６を設けたが、連結部６を設けるところはガイド部１４が設けられた所以外の本体３の周壁３ａであればどこでもよく（サイドコア用切欠部を設ける必要がある）、前後方向の位置の制約も少なく、成形と組立時の受け板２の抜け止め片４とガイド部１４の配置を自由にできるため、本体３のスペースの余裕がある部分に配置でき、小型化をすることができる。
また、本実施の形態では、一対の抜け止め片４とガイド部１１を連結する連結部６は、各々の抜け止め片４とガイド部１１の間に、１箇所ずつ設けているが、２箇所ずつとして、成形時の樹脂流れをコントロールし易くしてもよい。
【００３６】
【発明の効果】
以上のように、この発明に係るランプソケット及びその成形・組立方法は、前面にランプピン挿入孔と周壁に抜け止め片を有する略筒状の受け板と、前面に前記受け板を前後方向に移動可能に挿通する開口部と周壁に前記受け板に設けられた前記抜け止め片が係合するガイド部とを有する本体と、この本体の背面の開口部を閉塞するカバーと、使用時に、前記受け板が前記本体の前記ガイド部に沿って背面方向へ移動するときの最大移動範囲以上の位置で、前記抜け止め片と前記ガイド部を連結し、前記本体と前記受け板を一体成形するための少なくとも１つの連結部と、を備え、前記連結部、前記本体及び前記受け板を一体成形し、成形後、前記連結部を前記ガイド部方向に押し込んで分断し、前記受け板の前記止め片を前記ガイド部に挿入するので、組立を容易にすることができる
また、前記受け板の抜け止め片が本体のガイド部と干渉せずスムーズに移動することができ、ランプ着脱の作業性をよくすることができる。
【図面の簡単な説明】
【図１】この発明の実施の形態１を示すランプソケットの分解斜視図である。
【図２】この発明の実施の形態１を示すランプソケットの組立てた状態の部分破断背面図である。
【図３】この発明の実施の形態１を示すランプソケットの組立てた状態の断面図である。
【図４】この発明の実施の形態１を示すランプソケットの一体成形時の斜視図である。
【図５】図４の連結部の部分破断側面図である。
【図６】この発明の実施の形態１の動作を示すランプソケットの使用時の部分破断側面・断面図である。
【図７】この発明の実施の形態１を示すランプソケットの使用時の部分破断側面・断面図である。
【図８】この発明の実施の形態２を示すランプソケットの一体成形時の要部側面図である。
【図９】この発明の実施の形態２を示すランプソケットの使用時の部分破断側面・断面図である。
【図１０】この発明の実施の形態２を示すランプソケットの使用時の部分破断側面・断面図である。
【図１１】この発明の実施の形態３を示すランプソケットの組立てた状態の部分破断背面図である。
【図１２】この発明の実施の形態３を示すランプソケットの一体成形時の要部背面図である。
【図１３】この発明の実施の形態３を示すランプソケットの分解斜視図である。
【図１４】図１２の連結部の側面図である。
【図１５】この発明の実施の形態３を示すランプソケットの使用時の部分破断側面・断面図である。
【図１６】従来のランプソケットの分解斜視図である。
【図１７】従来のランプソケットの一体成形時の断面図である。
【図１８】従来のランプソケットの使用時の部分断面図である。
【符号の説明】
１カバー、２受け板、３本体、３ａ周壁、４抜け止め片、６連結部、６ａ受け板側分断部、６ｄ本体側連結部、９ランプピン挿入孔、１０開口部、１１、１４ガイド部。[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket for electrically connecting and mechanically holding a straight lamp and mounting it on a lighting fixture, and more particularly to a lamp socket that is easy to assemble and easy to attach and detach, and a molding and assembling method thereof.
[0002]
[Prior art]
FIG. 16 is an exploded perspective view of a conventional lamp socket disclosed in, for example, JP-A-6-36841. As shown in the figure, the lamp socket includes a receiving plate (plunger) 21 having a lamp pin insertion hole 24 on the front surface, a front body 22 having an opening 28 on the front surface through which the receiving plate 21 is movably inserted, and a terminal. It has a storage box portion 33 and is composed of a substantially box-shaped rear body 23 that stores the receiving plate 21 and the front body 22 and forms a main body.
[0003]
In the front body 22, 32 is an electric wire insertion hole, 34 is a peripheral wall, 35 is a caulking tube portion having a caulking hole 40 at the tip, and 51 is a locking claw. The receiving plate 21 is integrally formed through a connecting portion 29 in a state where the receiving plate 21 is inserted into the opening portion 28 of the front body 22, and the connecting portion 29 after the forming is divided. Reference numerals 26 and 27 denote retaining protrusions. In the rear body 23, 36 is a peripheral wall, 41 is a spring receiving projection of a pressing spring (not shown) that biases the receiving plate 21, 42 is a caulking projection that is caulked in the caulking hole 40, and 45 is an engaging pawl 51. This is a locking hole.
Further, the main body 31 has a lamp pin contact portion (not shown) provided inside the lamp pin insertion hole 24 of the receiving plate 21 at one end, and is connected to the electric wire stored in the terminal storage box portion 33 of the electric wire connection terminal portion. A conductive plate having a terminal (not shown) at the other end is disposed.
[0004]
As shown in FIG. 17, the front body 22 and the receiving plate 21 are molded when a thermoplastic resin is injected from a molding gate portion 56 provided on the wire insertion hole 32 side of the front body 22. The body 22 is formed, but the injection end of the front body 22 is the connecting portion 29. When the resin reaches the connecting portion 29, the resin flows further through the connecting portion 29, and finally, the receiving plate 21 is formed. A stop projection 27 is formed, whereby the front body 22 in which the receiving plate 21 is integrally formed is formed.
Then, the conductive plate and the pressing spring are loaded inside, the front body 22 is attached to the rear body 23, the locking claw 51 is locked to the locking hole 45, and the caulking protrusion 42 is inserted into the caulking hole 40. Assembling is performed by caulking and dividing the connecting portion 29 of the receiving plate 21.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional lamp socket, when the dividing portion of the connecting portion 29 is not constant and the dividing portion is closer to the opening portion 28 which is the guide portion of the receiving plate 21, the opening portion is opened as shown in FIG. part 28 divide portion of the connecting portion 29 interferes with, the receiving plate 2 1 is caught in the opening 28, smoothly unable movable, workability lamp detachable is disadvantageously deteriorated.
Further, divide portion of the connecting portion 29 becomes the opening 28 side toward, when receiving plate 2 1 was displaced by axial rotation, the surface and divide portion of the inner peripheral edge of the opening 28 to interfere, receiving plate 21 has a problem that the workability of attaching / detaching the lamp deteriorates.
[0006]
The present invention has been made to solve the above-described problem, and is easy to assemble, the dividing portion of the connecting portion of the receiving plate does not interfere with the guide portion, can be moved smoothly, and the lamp can be easily attached and detached. It is an object of the present invention to provide a socket and a method for forming and assembling the socket.
[0007]
[Means for Solving the Problems]
The lamp socket according to the present invention comprises a substantially cylindrical receiving plate having a lamp pin insertion hole on a front surface and a retaining piece on a peripheral wall, an opening through which the receiving plate is movably inserted in the front-rear direction, and the peripheral wall. A main body having a guide portion with which the retaining piece provided on the plate engages, a cover for closing the opening on the back surface of the main body, and the receiving plate along the guide portion of the main body in use At least one connecting part for connecting the retaining piece and the guide part and integrally forming the main body and the receiving plate at a position that is not less than the maximum moving range when moving in the back direction. It is.
[0008]
Further, a substantially cylindrical receiving plate having a lamp pin insertion hole on the front surface and a retaining piece on the peripheral wall, an opening through which the receiving plate is movably inserted in the front-rear direction and the peripheral wall are provided on the receiving plate. A main body having a guide portion with which a retaining piece engages, a cover for closing the opening on the back of the main body, and the retaining piece connected to the peripheral wall other than the guide portion of the main body; And at least one connecting portion for integrally molding the backing plate.
[0009]
Moreover, the connection part is provided with the parting part of the shape which is easy to parting.
[0010]
The dividing portion is provided at a predetermined position in the vicinity of the boundary between the retaining piece and the connecting portion.
[0011]
Further, the dividing portion of the connecting portion is provided at the boundary between the retaining piece and the connecting portion.
[0012]
The main body and the backing plate are made of at least glass-containing PBT or filler-containing PP material.
[0013]
The lamp socket molding and assembling method according to the present invention includes a substantially cylindrical receiving plate having a lamp pin insertion hole on a front surface and a retaining piece on a peripheral wall, and a guide in which the retaining piece provided on the receiving plate is engaged. And a method of forming and assembling a lamp socket having a body, and the retaining piece at a position that is not less than a maximum movement range when the backing plate moves in the back direction along the guide portion of the body. at least one connection connecting the guide portion and, integrally molding the main body and the backing plate, after molding, the connecting portion divided by pushing the guide portion direction, the retaining piece of the receiving plate It is inserted into the guide part.
[0014]
A lamp socket having a substantially cylindrical receiving plate having a lamp pin insertion hole on a front surface and a retaining piece on a peripheral wall, and a main body having a guide portion engaged with the retaining piece provided on the receiving plate. In the molding and assembling method, at least one connecting portion for connecting the retaining piece to the peripheral wall other than the guide portion of the main body, the main body and the receiving plate are integrally formed, and after forming, the receiving plate is The connecting part is divided by rotating in the direction, and the retaining piece of the receiving plate is inserted into the guide part of the main body.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 is an exploded perspective view of a lamp socket showing Embodiment 1 of the present invention, FIG. 2 is a partially broken rear view of the assembled state, FIG. 3 is a sectional view of the assembled lamp socket, and FIG. FIG. 5 is a partially broken side view of the connecting portion of FIG. 4, FIG. 6 is a view showing the relationship between the connecting portion and the guide portion, and FIG. 7 is a partially broken side and sectional view in use (after assembly). is there.
[0016]
1 to 5, reference numeral 2 denotes a substantially cylindrical receiving plate having a pair of lamp pin insertion holes 9 on the front surface and retaining pieces 4 on the peripheral wall 2 a, and the peripheral walls 2 a and retaining pieces 4 are provided on both sides of the receiving plate 2. it is and, 2 b is a wall provided on both sides in the direction orthogonal to the peripheral wall 2a. 3 is a main body having an opening 10 through which the receiving plate 2 is movably inserted in the front-rear direction and a guide portion 11 in which the retaining piece 4 provided on the receiving plate 2 is engaged with the peripheral wall 3a. Reference numeral 6 denotes a connecting portion for integrally molding the main body 3 and the receiving plate 2, which is divided by the receiving plate-side dividing portion 6a after the integral forming, and 6d is a main body-side connecting portion. Reference numeral 1 denotes a cover for closing the opening on the back surface of the main body 3.
The main body 3 and the backing plate 2 are made of at least a glass-containing PBT or a filler-containing PP material.
[0017]
2 and 3, reference numeral 12 denotes a conductive metal fitting, which includes a lamp pin contact portion 12a, an electric wire connecting portion 12b, and a conductive metal fitting movable portion 12c. Reference numeral 13 denotes an electric wire insertion hole. In FIG. 5, L indicates the maximum movement range of the backing plate 2.
[0018]
Next, integral molding and assembly of the backing plate 2 and the main body 3 will be described with reference to FIGS.
When the receiving plate 2 and the main body 3 are integrally formed, the retaining piece 4 and the guide portion are positioned at the maximum movement range L when the receiving plate 2 moves in the back direction along the guide portion 11 of the main body 3 in use. The shape of the molding die is determined and molded so as to be the connecting portion 6 that connects 11.
Two connecting portions 6 are provided at both ends of the pair of retaining pieces 4, but in FIGS. 1 to 5, the dividing portion 6 a of the connecting portion 6 is a boundary portion between the receiving plate 2 and the connecting portion 6 (receiving plate 2 side). The width is made thinner or thinner than other parts so that it can be easily divided.
[0019]
At the time of molding, molding is performed using a mold for the front surface and rear surface of the main body 3, a side core for the connecting portion 6, and the like. When the thermoplastic resin is injected into the mold from the injection port, first, the main body 3 is formed, then the resin flows from the connecting portion 6 and the receiving plate 2 is formed. As shown in FIG. It becomes an integrally molded product of the main body 3.
And after shaping | molding, the receiving plate 2 is pushed in the guide part 11 direction, the part 6a is parted, and it inserts in the guide part 11 as it is as shown in FIG.
[0020]
Here, the conditions under which the retaining piece 4 moves smoothly in the guide portion 11 will be described with reference to FIG.
FIG. 6A shows a case where a dividing portion 6a is provided at the boundary portion (receiving plate 2 side) between the retaining piece 4 and the connecting portion 6, where the left side of the drawing is in the state of integral molding and the right side is divided. d is a distance from the main body 3 to the dividing portion 6a, and is a clearance between the guide portion 11 and the retaining piece 4. FIG. 6B shows a case where a dividing portion 6 a is provided between the guide portion 11 and the retaining piece 4. d is the distance from the guide part 11 to the dividing part 6b, and is the clearance between the guide part 11 and the retaining piece 4.
FIG. 6C shows a case where the dividing portion 6c is provided at the boundary portion (the guide portion 11 side) between the guide portion 11 and the connecting portion 6, and the distance d from the guide portion 11 to the dividing portion 6c is zero. This is a case where the clearance between the retaining piece 4 and the retaining piece 4 is zero.
[0021]
6 (a) and 6 (b), the clearance is determined by the dividing portions 6a and 6b, and the dividing portions 6a and 6b are set in advance so that the distance from the guide portion 11 to the dividing portion 6a is appropriate within the clearance range. In this case, since the connecting portion 6 is not in the range of movement of the retaining piece 4, the separating portions 6 a and 6 b do not catch on the guide portion 11, and the retaining piece 4 can smoothly move on the guide portion 11. .
[0022]
However, in FIG. 6C, since the distance from the guide part 11 to the dividing part 6c is zero and the clearance is zero, the dividing part 6c is caught on the guide part 11, and the retaining piece 4 moves smoothly on the guide part 11. Can not do it.
[0023]
In Embodiment 1 of the present invention, as shown in FIGS. 6A and 6B, the dividing portions 6a and 6b of the connecting portion 6 are the boundary portions of the retaining pieces 4 and the connecting portions 6 or the boundary portions, respectively. And the position of the dividing portion and the width of the guide portion 11 so that the distance from the main body 2 to the dividing portions 6a and 6b is within an appropriate clearance range between the guide portion 11 and the retaining piece 4. Is set.
Note that the smaller the clearance is, the less the play is, and the retaining piece 4 can be moved smoothly. Therefore, in FIG. 6, the retaining piece 4 can be moved smoothly in FIG.
However, in FIG. 6A, if the clearance is reduced by reducing the length of the connecting portion 6, almost no remaining portion of the connecting portion 6 remains on the retaining piece 4 and the backlash is small. b) The retaining piece 4 can move the guide portion 11 more smoothly.
Next, assembly of the entire lamp socket will be described with reference to FIGS. First, with the retaining pieces 4 of the divided pair of receiving plates 2 supported by the guide portion 11 of the main body 3, the lamp pin contact portion 12a of the conductive metal fitting 12 is attached to the lamp pin insertion port 9 of the receiving plate 2, and the electric wire connecting portion 12b. Is attached to the tip of the wire insertion hole 13. The receiving plate 2 is urged by the conductive metal fitting movable portion 12c and moves to the front surface. As shown in FIGS. 3 and 7, the retaining piece 4 stops at the front surface portion of the guide portion 11 and closes the opening portion 10 of the main body 3. Next, the cover 1 is put on the back surface of the main body 3 and fixed to the main body 3 with fixing claws.
[0025]
As described above, at least one connecting portion 6 that connects the retaining piece 4 and the guide portion 11, the main body 3, and the receiving plate 2 at a position that is not less than the maximum movement range when moving in the back direction along the guide portion 11. Are integrally molded, and after molding, the connecting portion 6 is pushed in the direction of the guide portion 11 and divided, and the retaining piece 4 of the receiving plate 2 is inserted into the guide portion 11, so that assembly can be facilitated.
Further, since the dividing portion 6a is provided at a predetermined position near the boundary between the retaining piece 4 and the connecting portion 6, the clearance between the guide portion 11 and the retaining piece 4 can be arbitrarily set. The retaining piece 4 can move smoothly without interfering with the guide portion 11, and the workability of attaching and detaching the lamp can be improved.
Moreover, since the dividing part 6a has a shape that can be easily divided, the dividing can be facilitated.
Further, when the dividing portion 6a of the connecting portion 6 is provided at the boundary between the retaining piece 4 and the connecting portion 6, almost no remaining portion of the connecting portion 6 remains on the retaining piece 4, and the inclination of the receiving plate can be reduced. Lamp holding can be stabilized.
Moreover, since the main body 3 and the backing plate 2 are integrally formed of at least a glass-containing PBT or a filler-containing PP material, the dividing work at the time of assembly can be facilitated.
[0026]
In the present embodiment, two connecting portions 6 that connect the pair of retaining pieces 4 and the guide portion 11 are provided between each retaining portion 4 and the guide portion 11. One connecting portion 6 may be provided on one side, and the connecting portion 6 is disposed at a position where the receiving plate 2 is pushed in at the maximum when the lamp is pushed in. Therefore, the connecting portion 6 can be provided at two or more locations.
Thus, by providing a plurality, the resin flow at the time of molding can be controlled, and the connecting portion 6 can be made thinner or thinner and can be easily divided. In addition, a material having a poor flow can be easily used.
[0027]
Embodiment 2. FIG.
In the first embodiment, when the receiving plate 2 and the main body 3 are integrally formed, the connecting portion 6 is positioned at the position of the maximum movement range when the receiving plate 2 moves in the back direction along the guide portion 11 of the main body 3 during use. However, in the present embodiment, the position of the connecting portion is provided at a position further beyond the position of the maximum movement range during use.
FIG. 8 is a side view of an essential part when the lamp socket is integrally formed according to Embodiment 2 of the present invention, and FIGS. 9 and 10 are partially broken side views and sectional views of the assembled state (when used).
[0028]
8 to 10, the difference from the first embodiment is that the length of the guide portion 11 is increased and the position of the connecting portion 6 is provided at a position L1 that exceeds the position of the maximum movement range L in use. Other configurations are the same as those of the first embodiment, and the description thereof is omitted.
In this configuration, when the receiving plate 2 and the main body 3 are integrally formed, as shown in FIG. 8, the position of the connecting portion 6 is set to a position further beyond the position of the maximum movement range L during use. 3 is molded in the same manner as in the first embodiment using the front and rear molds and the side core for the connecting portion 6. And after shaping | molding, the receiving plate 2 is pushed in the guide part 11 direction, the part 6a is parted, and it inserts in the guide part 11 as it is as shown in FIG.
At the time of use, as shown in FIG. 10, the retaining piece 4 of the receiving plate 2 moves the guide portion 11 within the range of the maximum movement range L at the time of use.
[0029]
As described above, when the receiving plate 2 is pushed into the maximum range L when it is provided at the position of L1 exceeding the position of the maximum movement range L in use as in the first embodiment, the dividing portion 6a However, in this embodiment, even if the receiving plate 2 is pushed into the maximum range L, the dividing portion is separated from the stopper 4 in this embodiment. In addition, the retaining piece 4 of the receiving plate 2 can move more smoothly without interfering with the guide portion 11 of the main body, and the workability of attaching and detaching the lamp can be improved.
[0030]
Embodiment 3 FIG.
11 is a partially broken rear view of the assembled lamp socket showing Embodiment 3 of the present invention, FIG. 12 is a rear view of the main part at the time of integral molding, FIG. 13 is an exploded perspective view at the time of integral molding, and FIG. 12 is a side view of the connecting portion in FIG. 12, and FIG. 15 is a partially broken side view / sectional view in use (after assembly).
11-15, the same code | symbol is attached | subjected to FIG. 1-4 of Embodiment 1, or the same part, and description is abbreviate | omitted.
11 to 15, reference numeral 14 denotes a pair of guide portions that are provided on the main body 3 and engage with the pair of retaining pieces 4 of the receiving plate 2. 13 and 14, 16 and 17 are side core notches required for molding the connecting portion 6 during molding, and are provided on the back side of the peripheral wall 3 a in a direction perpendicular to the direction of the guide portion 14.
[0031]
Next, integral molding and assembly of the receiving plate 2 and the main body 3 will be described. In the present embodiment, when the connecting portion 6 is divided, the connecting portion 6 is rotated in the direction of the arrow as shown in FIG. 12, but this rotational direction is determined to be a direction in which the connecting portion 6 is easy to be divided, and the connecting portion 6 is prevented from coming off in this direction. The shape of the main body 3 is determined so that there is no peripheral wall 3 a that interferes with the piece 4.
When the receiving plate 2 and the main body 3 are integrally formed, as shown in FIG. 12, each of the side end portions on the back side opposite to the rotation direction of the two opposing sides of the side core cutout portions 16 and 17 is detached. The shape of the molding die is determined and molded so as to be the connecting portion 6 to which the stopper piece 4 is connected. The dividing portion 6a of the connecting portion 6 is provided at a boundary portion (receiving plate 2 side) between the receiving plate 2 and the connecting portion 6 so that the width is narrower or thinner than other portions so as to be easily divided.
[0032]
At the time of molding, it is performed in the same manner as in the first embodiment, and an integrally molded product of the receiving plate 2 and the main body 3 is obtained. Then, in the assembly after the molding, the receiving plate 2 is rotated in the direction of the arrow as shown in FIG. 12, the connecting portion 6 is divided by the dividing portion 6a, and the retaining piece 4 of the receiving plate 2 is attached to the guide portion 14 of the main body 3. And the conductive metal fitting 12 (FIG. 3) is attached in the same manner as in the first embodiment. The receiving plate 2 is urged by the conductive metal fitting movable portion 12c and moves to the front surface. As shown in FIG. 15, the retaining piece 4 stops at the front surface portion of the guide portion 14 and closes the opening portion 10 of the main body 3.
Next, the cover 1 is put on the back surface of the main body 3 and fixed to the main body 3 with fixing claws.
[0033]
Similarly to the first embodiment, the dividing portion 6a of the connecting portion 6 is provided at the boundary between the retaining piece 4 and the connecting portion 6 or in the vicinity of the boundary (see FIG. 6B), and from the main body 2. The position of the dividing portion and the width of the guide portion 14 are set so that the distance to the dividing portion 6a is within the clearance range between the guide portion 14 and the retaining piece 4.
[0034]
As described above, at least one connecting portion 6 that connects the retaining piece 4 to the peripheral wall 3 a other than the guide portion 14, the main body 3, and the receiving plate 2 are integrally formed, and after forming, the receiving plate 2 is rotated in the circumferential direction. Thus, the connecting portion 6 is divided and the retaining piece 4 is inserted into the guide portion 14, so that assembly can be facilitated.
In addition, the retaining piece 4 of the receiving plate 2 can move smoothly without interfering with the guide portion 14 of the main body, and the workability of attaching and detaching the lamp can be improved.
In addition, there are few restrictions on the position of the connecting portion 6 in the front-rear direction at the time of integral molding, and the arrangement of the retaining piece 4 and the guide portion 14 of the receiving plate 2 at the time of molding and assembly can be freely performed. It can be arranged in a certain part and can be reduced in size.
[0035]
In addition, in this Embodiment, although the connection part 6 was provided in the notch parts 16 and 17 for side cores provided in the back side of the surrounding wall 3a of the direction orthogonal to the guide part 14 direction, the place which provides the connection part 6 is a guide part. As long as it is the peripheral wall 3a of the main body 3 other than where the 14 is provided (it is necessary to provide a side core notch), there are few restrictions on the position in the front-rear direction, and the retainer plate 2 is prevented from coming off during molding and assembly. Since the arrangement of the piece 4 and the guide portion 14 can be freely performed, the piece 4 and the guide portion 14 can be arranged in a portion where there is room in the space of the main body 3, and the size can be reduced.
Further, in the present embodiment, the connecting portion 6 that connects the pair of retaining pieces 4 and the guide portion 11 is provided at one location between each retaining portion 4 and the guide portion 11. As a matter of course, the resin flow during molding may be easily controlled.
[0036]
【The invention's effect】
As described above, the lamp socket and the molding and assembling method thereof according to the present invention include a substantially cylindrical receiving plate having a lamp pin insertion hole on the front surface and a retaining piece on the peripheral wall, and moving the receiving plate in the front-rear direction on the front surface. A main body having an opening that can be inserted and a guide portion that engages with the retaining piece provided on the receiving plate on a peripheral wall; a cover that closes the opening on the back of the main body; In order to integrally form the main body and the receiving plate by connecting the retaining piece and the guide portion at a position that is not less than the maximum movement range when the plate moves in the back direction along the guide portion of the main body. At least one connecting portion, and integrally forming the connecting portion, the main body, and the receiving plate, and after forming, the connecting portion is pushed in the direction of the guide portion to divide the stopper piece of the receiving plate. Insert into the guide Since, also can facilitate assembly, it is possible to retaining piece of said receiving plate is moved smoothly without interfering with the guide portion of the body, it is possible to improve the workability of the lamp detachable.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a lamp socket showing Embodiment 1 of the present invention.
FIG. 2 is a partially broken rear view of the assembled lamp socket showing the first embodiment of the present invention.
FIG. 3 is a sectional view of the assembled lamp socket showing Embodiment 1 of the present invention.
FIG. 4 is a perspective view at the time of integral molding of the lamp socket showing Embodiment 1 of the present invention.
FIG. 5 is a partially cutaway side view of the connecting portion of FIG. 4;
FIG. 6 is a partially broken side view / sectional view of the lamp socket when used in operation of the first embodiment of the present invention.
FIG. 7 is a partially broken side view / sectional view of the lamp socket according to the first embodiment of the present invention when used.
FIG. 8 is a side view of an essential part during integral molding of a lamp socket according to Embodiment 2 of the present invention.
FIG. 9 is a partially broken side view / sectional view of the lamp socket according to the second embodiment of the present invention when used.
FIG. 10 is a partially broken side view / sectional view of a lamp socket showing a second embodiment of the invention when used.
FIG. 11 is a partially cutaway rear view of the assembled lamp socket showing Embodiment 3 of the present invention.
FIG. 12 is a main part rear view at the time of integral molding of a lamp socket according to Embodiment 3 of the present invention.
FIG. 13 is an exploded perspective view of a lamp socket showing Embodiment 3 of the invention.
14 is a side view of the connecting portion of FIG. 12. FIG.
FIG. 15 is a partially broken side view / sectional view of a lamp socket according to a third embodiment of the present invention when in use.
FIG. 16 is an exploded perspective view of a conventional lamp socket.
FIG. 17 is a cross-sectional view of a conventional lamp socket during integral molding.
FIG. 18 is a partial cross-sectional view of a conventional lamp socket when used.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cover, 2 receiving plate, 3 main body, 3a surrounding wall, 4 retaining piece, 6 connection part, 6a receiving plate side parting part, 6d main body side connection part, 9 lamp pin insertion hole, 10 opening part, 11, 14 guide part.

Claims

A substantially cylindrical receiving plate having a lamp pin insertion hole on the front surface and a retaining piece on the peripheral wall;
A main body having an opening through which the receiving plate is movably inserted in the front-rear direction and a guide portion that engages with a retaining piece provided on the receiving plate on a peripheral wall;
A cover for closing the opening on the back of the main body;
At the time of use, the retaining piece and the guide portion are connected at a position that is not less than the maximum movement range when the backing plate moves in the back direction along the guide portion of the main body, and the main body and the receiving plate are At least one connecting portion for integrally molding;
A lamp socket characterized by comprising:

A substantially cylindrical backing plate having a lamp pin insertion hole on the front surface and a retaining piece on the peripheral wall;
A main body having an opening through which the receiving plate is movably inserted in the front-rear direction and a guide portion that engages with a retaining piece provided on the receiving plate on a peripheral wall;
A cover for closing the opening on the back of the main body;
Connecting the retaining piece with the peripheral wall other than the guide portion of the main body, and at least one connecting portion for integrally forming the main body and the receiving plate;
A lamp socket characterized by comprising:

3. The lamp socket according to claim 1, wherein the connecting portion includes a dividing portion having a shape that can be easily divided.

4. The lamp socket according to claim 3, wherein the dividing portion is provided at a predetermined position in the vicinity of a boundary portion between the retaining piece and the connecting portion.

The lamp socket according to claim 1 or 2, wherein a dividing portion of the connecting portion is provided at a boundary portion between the retaining piece and the connecting portion.

6. The lamp socket according to claim 1, wherein the main body and the backing plate are made of at least a glass-containing PBT or a filler-containing PP material.

A substantially cylindrical backing plate having a lamp pin insertion hole on the front surface and a retaining piece on the peripheral wall;
In a lamp socket forming and assembling method having a main body having a guide portion with which the retaining piece provided on the receiving plate engages,
At least one connecting part that connects the retaining piece and the guide part at a position that is not less than the maximum movement range when the backing plate moves in the back direction along the guide part of the main body, the main body, and the receiving part integrally molded plate, after molding, the connecting portion divided by pushing the guide portion direction, the receiving plate the omission lamp molding and assembly method of the socket, characterized by inserting the locking piece into the guide portion of the .

Molding of a lamp socket having a substantially cylindrical receiving plate having a lamp pin insertion hole on the front surface and a retaining piece on the peripheral wall, and a main body having a guide portion engaged with the retaining piece provided on the receiving plate. And in the assembly method,
At least one connecting portion for connecting the retaining piece to the peripheral wall other than the guide portion of the main body, the main body and the receiving plate are integrally formed, and after forming, the receiving plate is rotated in the circumferential direction to thereby connect the connecting portion. The lamp socket is formed and assembled by inserting the retaining piece of the receiving plate into the guide portion of the main body.