JP3708307B2

JP3708307B2 - Rotating operation type electronic component with push switch and manufacturing method thereof

Info

Publication number: JP3708307B2
Application number: JP29512697A
Authority: JP
Inventors: 耕治尾野; 巧西本; 順佐藤; 哲也福田; 淳菅原
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1997-10-28
Filing date: 1997-10-28
Publication date: 2005-10-19
Anticipated expiration: 2017-10-28
Also published as: JPH11135310A

Description

【０００１】
【発明の属する技術分野】
本発明は主としてオーディオ機器、ビデオ機器等における音量調整、タイマー調整用等に使用される回転操作型電子部品と回路切換用プッシュスイッチの組合せ等、操作軸を回転操作と上下動操作するプッシュスイッチ付回転操作型電子部品およびその製造方法に関するものである。
【０００２】
【従来の技術】
従来のこの種の電子部品の技術を、プッシュスイッチ付回転操作型エンコーダを例として図６〜図９を用いて説明する。
【０００３】
図６は従来のプッシュスイッチ付回転操作型エンコーダの正面断面図であり、同図において、１は金属棒からなる操作軸で、軸受２の円形孔２Ａに上端から挿入されて回転運動および上下動が可能なようにその中間円形部１Ａを嵌合保持されており、３は成形樹脂製の回転接点体で、下面に平面接点板４を有する円板部３Ａと、その中心に垂直に立てられた円筒部３Ｂからなり、円筒部３Ｂが軸受２の円形孔２Ａに下端から挿入されて、回転運動が可能なようにその外形を嵌合保持されている。
【０００４】
そして、円筒部３Ｂの非円形貫通孔３Ｃには、上記操作軸１の下方の非円形細径部１Ｂが回転運動は伝達されるが上下動は伝わらないように嵌合され、円板部３Ａの下側に出た操作軸１の溝部１Ｄに、図７の斜視図に示すようなＣ形成形ワッシャ５が下端部１Ｃのテーパ部から挿入されて操作軸１の抜け止め部を形成している。
【０００５】
また、回転接点体３の円板部３Ａの下面には図６のＡ−Ａ線における断面図である図８に示すように中心円部４Ａとこれから放射状に伸ばされた複数個の直線状部４Ｂからなる平面接点板４がインサート成形して固定され、所定の間隔をあけて対向した下方の固定基板６から伸ばされた三本の弾性脚７Ａおよび７Ｂ，７Ｃの先端の弾性接点８Ａおよび８Ｂ，８Ｃが各々この平面接点板４の中心円部４Ａおよび直線状部４Ｂに弾接して回転部品部（エンコーダ部）９を構成しており、弾性接点８Ｂ，８Ｃの位置は回転方向に少しずれるように設定されている。
【０００６】
さらに、固定基板６の下方にはスイッチ基板１０が配設され、その上面中央の凹部１０Ａ内には上記操作軸１と同心位置の中央固定接点１１Ａおよび外周位置の外周固定接点１１Ｂがインサート成形により固定されており、外周固定接点１１Ｂ上には弾性金属薄板製のドーム状可動接点１２の外周下端が載せられて、プッシュスイッチ部１３を構成していると共に、ドーム状可動接点１２の上部には、プッシュ板１４を介して上記操作軸１の下端部１Ｃが当接しており、この状態において、操作軸１の溝部１Ｄに挿入されたＣ形成形ワッシャ５は回転接点体３の円板部３Ａの下面の凹部天面に当接している。
【０００７】
そして、上記の軸受２、固定基板６およびスイッチ基板１０を重ね合わせて、軸受２の上方からコの字形取付金具１５の脚部で挟み込み、スイッチ基板１０の裏面で脚部先端１５Ａを折り曲げることにより全体が連結固定されている。
【０００８】
次に、このプッシュスイッチ付回転操作型エンコーダの動作について説明すると、まず操作軸１の上方先端部１Ｅを回転操作することにより、操作軸１の回転運動に伴って回転接点体３が回転させられ、その下面の平面接点板４に対して３つの弾性接点８Ａおよび８Ｂ，８Ｃが中心円部４Ａおよび直線状部４Ｂ上を摺動していき、各々の接点に接続された端子１６Ａおよび１６Ｂ，１６Ｃの１６Ａ−１６Ｂ間および１６Ａ−１６Ｃ間にパルス信号を出力して回転部品部９として機能する。
【０００９】
そして、この回転操作時には操作軸１は上下方向には動かず、プッシュスイッチ部１３は動作しない。
【００１０】
次に、図９の断面図に矢印で示すように操作軸１の上方先端部１Ｅに押し力を加えて操作軸１を下方に動かすと、その下端部１Ｃがプッシュ板１４を介してドーム状可動接点１２を押してプッシュスイッチ部１３を動作させる。
【００１１】
この時に、回転部品部９の回転接点体３は下方へは動かず、勿論回転もしないので回転部品部９は動作しない。
【００１２】
【発明が解決しようとする課題】
しかしながら上記従来のプッシュスイッチ付回転操作型電子部品（プッシュスイッチ付回転操作型エンコーダ）では、Ｃ形成形ワッシャ５を操作軸１の下方の溝部１Ｄに挿入することにより操作軸１の抜け止め部を組立形成しているが、この方式はＣ形成形ワッシャ５を必要とすると共にその挿入作業は回転接点体３の下面の凹部内で細径の溝部１ＤにＣ形成形ワッシャ５を挿入する作業であるため非常に難しく、さらにＣ形成形ワッシャ５の挿入状態を確認し難いという課題があった。
【００１３】
本発明はこのような従来の課題を解決するものであり、Ｃ形成形ワッシャ等の別部品を使用しないで操作軸の抜け止め部を容易に組立形成することができるプッシュスイッチ付回転操作型電子部品およびその製造方法を提供することを目的とするものである。
【００１４】
【課題を解決するための手段】
上記課題を解決するために本発明のプッシュスイッチ付回転操作型電子部品は、軸受の円形孔に嵌合保持された操作軸の下方に設けた非円形係合部および係合用凹部に、回転部品部の回転接点体の非円形保持部および弾性爪部を係合させることにより、操作軸と回転接点体を共回りはするが一定範囲の操作軸の上下動が可能なように結合させて、回転部品部およびその下方のプッシュスイッチ部を各々回転操作およびプッシュ操作するようにしたものである。
【００１５】
これにより、ワッシャ等を使用しないで操作軸の抜け止め部を容易に組立形成することができるプッシュスイッチ付回転操作型電子部品およびその製造方法を実現することができる。
【００１６】
【発明の実施の形態】
本発明の請求項１に記載の発明は、円形貫通孔を有する軸受と、この軸受の円形貫通孔に円形中間部を回転および上下動可能に嵌合保持され上端部が軸受よりも上方に突出すると共に下方に非円形係合部および係合用凹部を有する操作軸と、円板部の上面に操作軸の非円形係合部に嵌合する非円形保持部および操作軸の係合用凹部にはまり込む弾性爪部を有し下面に可動接点を有する回転接点体ならびに可動接点と係合して電気信号を発生する固定接点を有する固定基板で形成される回転部品部と、この回転部品部の下方に配設されて操作軸の下端部で押されることにより動作するプッシュスイッチ部と、軸受と回転部品部およびプッシュスイッチ部を外方から連結固定するコの字形取付金具からなるプッシュスイッチ付回転操作型電子部品としたものであり、操作軸の抜け止め部を操作軸の係合用凹部に回転接点体の弾性爪部をはめ込んで結合させる構成としたため、ワッシャ等の別部品を使用しないで操作軸の抜け止め部を組立形成することができ、安価で組立作業性のよいプッシュスイッチ付回転操作型電子部品を実現することができるという作用を有する。
【００１７】
請求項２に記載の発明は、請求項１に記載の発明において、回転接点体の弾性爪部の外周を軸受の円形貫通孔の内壁に当接嵌合させたものであり、操作軸に強い引き力が加わった場合に、弾性爪部が操作軸の係合用凹部から抜けようとして外方に開こうとしても軸受の円形貫通孔の内壁に当接しているため外方へ開かず、操作軸が抜け難くなるという作用を有する。
【００１８】
請求項３に記載の発明は、あらかじめ操作軸の非円形係合部と係合用凹部に回転接点体の非円形保持部および弾性爪部を係合させて、操作軸と回転接点体を結合させた回転接点体付操作軸を、操作軸の上端部から軸受の円形貫通孔に挿入して組み立てる請求項１または２に記載のプッシュスイッチ付回転操作型電子部品の製造方法としたものであり、操作軸の係合用凹部内に回転接点体の弾性爪部を容易に確実にはめ込んで組み立てることができるという作用を有する。
【００１９】
請求項４に記載の発明は、請求項３に記載の発明において、プッシュスイッチ部の構成部品と回転部品部の固定基板を仮結合してスイッチブロックとし、コの字形取付金具を基準として下方から軸受、回転接点体付操作軸、スイッチブロックを順次積み重ねて組合せ、コの字形取付金具の脚部で全体を挟み込み、スイッチブロックの裏面で脚部先端を折り曲げることにより各部材を連結固定するようにしたものであり、プッシュスイッチ付回転操作型電子部品をコの字形取付金具を基準として一方向から組み立てることができるので、効率良い組立作業をすることができると共に自動機による組み立ても容易にできるという作用を有する。
【００２０】
以下、本発明の実施の形態について、プッシュスイッチ付回転操作型エンコーダを例として図１〜図５を用いて説明する。
【００２１】
なお、本実施の形態において、従来の技術の項で説明したものと同じ構成の部分については同じ番号を付し、その詳細な説明を省略する。
【００２２】
（実施の形態１）
図１は本発明の第１の実施の形態によるプッシュスイッチ付回転操作型エンコーダの正面断面図であり、同図において、２１は金属ダイカスト等からなる操作軸で、同図および図２（ａ）の外観斜視図の上方に示すように、その中間部から上方が円形部２１Ａとなり、下方に円形中心に対して対称な二ヶ所の非円形係合部としての突部２１Ｂと、これに対して直角な位置の一対の係合用凹部２１Ｃを有すると共に下端部は円形細径部２１Ｄとなっており、円形部２１Ａの下部を金属ダイカスト等からなる軸受２２の円形貫通孔２２Ａに回転および上下動可能に嵌合保持され、その上端部は軸受２２から上方へ突出して操作部２１Ｅを構成している。
【００２３】
一方、２３は円板部２３Ａの中心に操作軸２１の下端部の円形細径部２１Ｄが挿通する中心孔２３Ｂを備えると共に、円板部２３Ａの下面に従来の技術の場合と同様の平面接点板４をインサート成形等により固定している成形樹脂製の回転接点体であり、図２（ａ）の外観斜視図の下方に示すように、その上面の対向する二つの壁部２３Ｃに非円形保持部として設けられた溝部２３Ｄが、上記操作軸２１の二つの非円形係合部としての突部２１Ｂと共回りするが上下動可能に嵌合すると共に、これと直角な位置に設けられた一対の弾性爪部２３Ｅが操作軸２１の一対の係合用凹部２１Ｃにはめ込まれることにより抜け止め部を構成して、操作軸２１の上下動を一定の範囲に規制している。
【００２４】
この回転接点体２３を操作軸２１と組合せ結合する方法は、図２（ａ）に示すように両者が単独の個片の状態において、回転接点体２３の中心孔２３Ｂに操作軸２１の円形細径部２１Ｄを挿入すると共に、回転接点体２３の二つの溝部２３Ｄに操作軸２１の二つの突部２１Ｂを嵌合させるように両者を組合せることにより、回転接点体２３の一対の弾性爪部２３Ｅがその弾性によって開きながら簡単にかつ確実に操作軸２１の係合用凹部２１Ｃにはめ込まれて、図２（ｂ）に示すように回転接点体付操作軸２４とすることができるものである。
【００２５】
そして、上記回転接点体２３の円板部２３Ａの下面の平面接点板４に所定の間隔をあけて対向した下方の固定基板６から伸ばされた三つの弾性接点８が各々この平面接点板４の中心円部および直線状部（共に図示せず）に弾接して回転部品部（エンコーダ部）２５を形成していることは、従来の技術の場合と同じである。
【００２６】
さらに、固定基板６の下方に配設されたスイッチ基板１０の上面に中央固定接点１１Ａおよび外周固定接点１１Ｂがインサート成形により固定され、外周固定接点１１Ｂの上に弾性金属薄板製のドーム状可動接点１２が載せられてプッシュスイッチ部１３を構成していることも従来の技術の場合と同様であるが、このドーム状可動接点１２の上部には、プッシュ板１４を介して回転接点体２３の中心孔２３Ｂを貫通して下方に突出した操作軸２１の円形細径部２１Ｄが当接しており、この状態において上記回転接点体２３の弾性爪部２３Ｅは操作軸２１の係合用凹部２１Ｃ内の下端部に位置している。すなわち、操作軸２１はその上下動可能範囲の上端部に位置している。
【００２７】
そして、以上のように配設された軸受２２、固定基板６およびスイッチ基板１０を重ね合わせ、軸受２２の上方から伸ばされたコの字形取付金具１５の脚部で挟み込んで全体を連結固定していることも従来の技術の場合と同じである。
【００２８】
このように構成されたプッシュスイッチ付回転操作型エンコーダの動作について説明する。
【００２９】
まず、操作軸２１の操作部２１Ｅを回転操作すると、操作軸２１の非円形係合部である突部２１Ｂと嵌合した非円形保持部である壁部２３Ｃの溝部２３Ｄを介して回転接点体２３が共回りし、その下面の平面接点板４に対して弾性接点８が弾接摺動して各々の接点に接続された端子１６間にパルス信号を出力して回転部品部（エンコーダ部）２５として機能する。
【００３０】
そして、この回転操作時に操作軸２１が上下方向に動かずプッシュスイッチ部１３が動作しないことは従来の技術の場合と同様である。
【００３１】
また、図３の断面図に矢印で示すように操作軸２１の操作部２１Ｅに下方への押し力を加えると、操作軸２１は突部２１Ｂが回転接点体２３の壁部２３Ｃの溝部２３Ｄの内周にガイドされながら下方に動き、回転接点体２３の中心孔２３Ｂから下方に突出している円形細径部２１Ｄの先端がプッシュスイッチ部１３のプッシュ板１４を介してドーム状可動接点１２を押して中央固定接点１１Ａと外周固定接点１１Ｂとの間を接続させ、プッシュスイッチ部１３を動作させる。
【００３２】
そして、操作軸２１の操作部２１Ｅに加える押し力を除くと、ドーム状可動接点１２の弾性復元力によってプッシュ板１４すなわち操作軸２１が押し上げられて元の図１の状態に復帰する。
【００３３】
この操作軸２１のプッシュ操作時に、回転部品部２５の回転接点体２３は下方へは動かず勿論回転もしないので、回転部品部２５が動作しないことも従来の技術の場合と同様である。
【００３４】
以上のように本実施の形態によれば、操作軸の抜け止め部を安価で容易に組立形成することができるプッシュスイッチ付回転操作型電子部品を提供することができるものである。
【００３５】
なお、本実施の形態において、操作軸２１の抜け止め部を構成する回転接点体２３の弾性爪部２３Ｅの外周を軸受２２の円形貫通孔２２Ａの内径とほぼ同じにして円形貫通孔２２Ａの内壁に当接嵌合させると、操作軸２１に強い引っ張り力が加わった場合に弾性爪部２３Ｅが操作軸２１の係合用凹部２１Ｃから抜けようとして外方に開こうとしても円形貫通孔２２Ａの内壁に弾性爪部２３Ｅの外周が抑えられているため弾性爪部２３Ｅの開きを規制でき、操作軸２１の抜け強度を大きくすることができるものである。
【００３６】
また、上記の説明においては回転部品部が回転操作型エンコーダである場合を例として説明したが、これは回転操作型可変抵抗器等の他の電子部品としてもよいことは言うまでもない。
【００３７】
（実施の形態２）
図４は本発明の第２の実施の形態によるプッシュスイッチ付回転操作型エンコーダの製造方法を説明する断面図であり、同図に示すようにコの字形取付金具１５を基準として、まず、その上面中央孔１５Ｂおよび対向する脚部１５Ｃ間に軸受２２の円筒部２２Ｂおよび基部２２Ｃを各々下方からはめ込み、続いて、あらかじめ操作軸２１と回転接点体２３を単独の個片の状態で結合させた回転接点体付操作軸の操作軸２１の操作部２１Ｅを、上記軸受２２の円形貫通孔２２Ａに下方により挿入嵌合させ、最後にその下方からスイッチブロック２６の固定基板２７側を上にしてコの字形取付金具１５の対向する脚部１５Ｃにはめ込み、スイッチ基板２８の裏面で脚部先端１５Ａを折り曲げることにより、プッシュスイッチ付回転操作型エンコーダとして完成するものである。
【００３８】
なお、上記のスイッチブロック２６は、図５に示すようにスイッチ基板２８の上面中央の凹部２８Ａ内に、ドーム状可動接点１２およびプッシュ板１４を載せた後、回転部品部２９の固定基板２７を重ね合わせて成形樹脂製の固定基板２７の下面に設けたダボ２７Ａをスイッチ基板２８に設けた段付き孔２８Ｂに通し、スイッチ基板２８の裏面側の段付き孔２８Ｂ内に突出した上記ダボ２７Ａの先端をカシメることにより結合したものである。
【００３９】
このように、プッシュスイッチ部３０の構成部品と回転部品部２９の固定基板２７をあらかじめスイッチブロック２６として一体化しておくことにより、プッシュスイッチ付回転操作型電子部品をコの字形取付金具１５を基準として全部品を一方向から組み立てることができるため、効率的な組立作業ができると共に、自動機による組み立ても容易に可能となるものである。
【００４０】
【発明の効果】
以上のように本発明によれば、Ｃ形成形ワッシャ等を使用しないで操作軸の抜け止め部を容易に組立形成することができるので、安価で組立作業性がよく、しかも操作軸の抜け強度が大きいプッシュスイッチ付回転操作型電子部品を提供することができるという有利な効果が得られるものである。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態によるプッシュスイッチ付回転操作型電子部品であるプッシュスイッチ付回転操作型エンコーダの正面断面図
【図２】（ａ）同要部である操作軸と回転接点体の斜視図
（ｂ）同操作軸と回転接点体の結合状態を示す斜視図
【図３】同操作軸を押した状態の正面断面図
【図４】本発明の第２の実施の形態によるプッシュスイッチ付回転操作型エンコーダの製造方法を説明する断面図
【図５】同要部であるプッシュスイッチ部をブロック化する方法を説明する断面図
【図６】従来のプッシュスイッチ付回転操作型電子部品であるプッシュスイッチ付回転操作型エンコーダの正面断面図
【図７】同要部であるＣ形成形ワッシャの斜視図
【図８】同図６のＡ−Ａ線における断面図
【図９】同操作軸を押した状態の正面断面図
【符号の説明】
４平面接点板
６，２７固定基板
８弾性接点
１０，２８スイッチ基板
１１Ａ中央固定接点
１１Ｂ外周固定接点
１２ドーム状可動接点
１３，３０プッシュスイッチ部
１４プッシュ板
１５コの字形取付金具
１５Ａ脚部先端
１５Ｂ上面中央孔
１５Ｃ脚部
１６端子
２１操作軸
２１Ａ円形部
２１Ｂ突部
２１Ｃ係合用凹部
２１Ｄ円形細径部
２１Ｅ操作部
２２軸受
２２Ａ円形貫通孔
２２Ｂ円筒部
２２Ｃ基部
２３回転接点体
２３Ａ円板部
２３Ｂ中心孔
２３Ｃ壁部
２３Ｄ溝部
２３Ｅ弾性爪部
２４回転接点体付操作軸
２５，２９回転部品部（エンコーダ部）
２６スイッチブロック
２７Ａダボ
２８Ａ凹部
２８Ｂ段付き孔[0001]
BACKGROUND OF THE INVENTION
The present invention is provided with a push switch for rotating and vertically moving an operation shaft, such as a combination of a rotary operation type electronic component and a circuit switching push switch used mainly for volume adjustment and timer adjustment in audio equipment, video equipment, etc. The present invention relates to a rotary operation type electronic component and a manufacturing method thereof.
[0002]
[Prior art]
A conventional technology of this type of electronic component will be described with reference to FIGS. 6 to 9 by taking a rotary operation type encoder with a push switch as an example.
[0003]
FIG. 6 is a front sectional view of a conventional rotary operation type encoder with a push switch. In FIG. 6, reference numeral 1 denotes an operation shaft made of a metal rod, which is inserted into the circular hole 2A of the bearing 2 from the upper end to rotate and move vertically. The intermediate circular portion 1A is fitted and held so as to be able to perform the operation. Reference numeral 3 denotes a rotating contact body made of a molded resin, and a disc portion 3A having a flat contact plate 4 on the lower surface and a vertical center of the disc portion 3A. The cylindrical portion 3B is inserted into the circular hole 2A of the bearing 2 from the lower end, and its outer shape is fitted and held so as to be capable of rotational movement.
[0004]
Then, the non-circular through-hole 3C of the cylindrical portion 3B is fitted with the non-circular small-diameter portion 1B below the operation shaft 1 so that the rotational motion is transmitted but the vertical motion is not transmitted, and the disc portion 3A. A C-shaped washer 5 as shown in the perspective view of FIG. 7 is inserted into the groove portion 1D of the operation shaft 1 protruding downward from the tapered portion of the lower end portion 1C to form a retaining portion of the operation shaft 1. Yes.
[0005]
Further, on the lower surface of the disk portion 3A of the rotating contact body 3, as shown in FIG. 8 which is a cross-sectional view taken along the line AA in FIG. 6, a central circle portion 4A and a plurality of linear portions radially extended therefrom. A flat contact plate 4 made of 4B is insert-molded and fixed, and elastic contacts 8A and 8B at the tips of three elastic legs 7A and 7B and 7C extended from a fixed substrate 6 facing each other at a predetermined interval. , 8C elastically contact the central circular portion 4A and the linear portion 4B of the flat contact plate 4 to form a rotating component portion (encoder portion) 9, and the positions of the elastic contacts 8B, 8C are slightly shifted in the rotational direction. Is set to
[0006]
Further, a switch substrate 10 is disposed below the fixed substrate 6, and a central fixed contact 11A concentric with the operation shaft 1 and an outer peripheral fixed contact 11B at the outer peripheral position are inserted into the recess 10A at the center of the upper surface by insert molding. The lower end of the outer periphery of the dome-shaped movable contact 12 made of an elastic thin metal plate is placed on the outer peripheral fixed contact 11B to constitute the push switch unit 13 and the upper part of the dome-shaped movable contact 12 is The lower end portion 1C of the operation shaft 1 is in contact with the push plate 14, and in this state, the C-shaped washer 5 inserted into the groove portion 1D of the operation shaft 1 is the disc portion 3A of the rotary contact body 3. Is in contact with the top of the concave portion of the lower surface.
[0007]
Then, the bearing 2, the fixed substrate 6 and the switch substrate 10 are overlapped and sandwiched between the legs of the U-shaped mounting bracket 15 from above the bearing 2, and the leg tip 15A is bent on the back surface of the switch substrate 10. The whole is connected and fixed.
[0008]
Next, the operation of the rotary operation type encoder with push switch will be described. First, by rotating the upper tip 1E of the operation shaft 1, the rotary contact body 3 is rotated along with the rotational movement of the operation shaft 1. The three elastic contacts 8A and 8B, 8C slide on the central circle 4A and the linear portion 4B with respect to the flat contact plate 4 on the lower surface, and terminals 16A and 16B connected to the respective contacts are provided. A pulse signal is output between 16A and 16B of 16C and between 16A and 16C, and functions as the rotating component unit 9.
[0009]
During this rotation operation, the operation shaft 1 does not move up and down, and the push switch unit 13 does not operate.
[0010]
Next, when the operating shaft 1 is moved downward by applying a pressing force to the upper tip 1E of the operating shaft 1 as indicated by an arrow in the sectional view of FIG. 9, the lower end 1C of the operating shaft 1 is dome-shaped via the push plate 14. The push switch unit 13 is operated by pushing the movable contact 12.
[0011]
At this time, the rotating contact member 3 of the rotating component unit 9 does not move downward and of course does not rotate, so that the rotating component unit 9 does not operate.
[0012]
[Problems to be solved by the invention]
However, in the conventional rotary operation type electronic component with push switch (rotary operation type encoder with push switch), the C-shaped washer 5 is inserted into the groove 1D below the operation shaft 1 to prevent the operation shaft 1 from coming off. Although the assembly is formed, this method requires the C-shaped washer 5 and the insertion work is an operation of inserting the C-shaped washer 5 into the small-diameter groove portion 1D in the concave portion on the lower surface of the rotating contact body 3. Therefore, there is a problem that it is very difficult and it is difficult to confirm the insertion state of the C-shaped washer 5.
[0013]
The present invention solves such a conventional problem, and a rotary operation type electronic device with a push switch that can easily assemble and form a retaining portion of an operation shaft without using a separate part such as a C-shaped washer. An object of the present invention is to provide a component and a manufacturing method thereof.
[0014]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the rotary operation type electronic component with push switch according to the present invention has a rotating component in a non-circular engagement portion and a recess for engagement provided below the operation shaft fitted and held in a circular hole of the bearing. By engaging the non-circular holding part and the elastic claw part of the rotating contact body of the part, the operating shaft and the rotating contact body are coupled together so that the operating shaft can move up and down within a certain range, The rotating component part and the push switch part below the rotating part part are rotated and pushed, respectively.
[0015]
As a result, it is possible to realize a rotary operation type electronic component with a push switch and a method for manufacturing the same, in which the retaining portion of the operation shaft can be easily assembled without using a washer or the like.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention is a bearing having a circular through hole, and a circular intermediate hole is fitted and held in the circular through hole of the bearing so as to be rotatable and vertically movable, and an upper end portion projects upward from the bearing. And an operating shaft having a non-circular engaging portion and an engaging concave portion below, and a non-circular holding portion that fits into the non-circular engaging portion of the operating shaft on the upper surface of the disc portion and an engaging concave portion of the operating shaft. A rotating contact body having an elastic claw portion to be inserted and a rotating contact body having a movable contact on the lower surface, a rotating component portion formed of a fixed substrate having a fixed contact that engages with the movable contact and generates an electrical signal, and a lower portion of the rotating component portion Rotating operation with a push switch consisting of a push switch part that is arranged on the operating shaft and operates by being pushed at the lower end of the operating shaft, and a U-shaped mounting bracket that connects and fixes the bearing, the rotating part part and the push switch part from the outside Type electronic components The operation shaft retaining part is fitted with the engaging claw of the operation shaft by fitting the elastic claw part of the rotating contact body into the engagement recess of the operation shaft, so that the operation shaft retaining part can be used without using another part such as a washer. As a result, it is possible to realize a rotary operation type electronic component with a push switch that is inexpensive and has good assembly workability.
[0017]
The invention according to claim 2 is the invention according to claim 1, wherein the outer periphery of the elastic claw portion of the rotating contact body is abutted and fitted to the inner wall of the circular through hole of the bearing, and is strong against the operation shaft. When a pulling force is applied, the elastic claw is not opened outward because it is in contact with the inner wall of the circular through-hole of the bearing even if the elastic claw is trying to open outward from the engaging recess of the operating shaft. Has the effect of making it difficult to remove.
[0018]
According to a third aspect of the present invention, the non-circular holding portion and the elastic claw portion of the rotating contact body are engaged with the non-circular engaging portion and the engaging recess of the operating shaft in advance to connect the operating shaft and the rotating contact body. The rotating operation type electronic component with a push switch according to claim 1 or 2, wherein the operating shaft with a rotating contact body is assembled by inserting into the circular through hole of the bearing from the upper end portion of the operating shaft. This has the effect that the elastic claw portion of the rotary contact body can be easily and securely fitted into the engaging recess of the operation shaft.
[0019]
According to a fourth aspect of the present invention, in the invention of the third aspect, the component parts of the push switch part and the fixed substrate of the rotating part part are temporarily coupled to form a switch block, and from the bottom with the U-shaped mounting bracket as a reference. A bearing, an operating shaft with a rotating contact body, and a switch block are stacked and combined one after the other. The whole part is sandwiched between the legs of the U-shaped mounting bracket, and the legs are bent at the back of the switch block so that the members are connected and fixed. Because it is possible to assemble rotary operation type electronic parts with push switches from one direction with reference to the U-shaped mounting bracket, it is possible to perform efficient assembling work and easy to assemble with an automatic machine. Has an effect.
[0020]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5 by taking a rotary operation type encoder with a push switch as an example.
[0021]
In the present embodiment, the same components as those described in the section of the prior art are denoted by the same reference numerals, and detailed description thereof is omitted.
[0022]
(Embodiment 1)
FIG. 1 is a front sectional view of a rotary operation type encoder with a push switch according to a first embodiment of the present invention. In FIG. 1, reference numeral 21 denotes an operation shaft made of a metal die casting or the like, and FIG. As shown in the upper part of the external perspective view of FIG. 1, the upper part from the middle part is a circular part 21A, and the lower part is a projecting part 21B as two non-circular engaging parts symmetrical with respect to the circular center. It has a pair of recesses 21C for engagement at right angles and has a circular lower diameter portion 21D at the lower end. The lower portion of the circular portion 21A can be rotated and moved up and down to a circular through hole 22A of a bearing 22 made of metal die casting or the like. The upper end of the upper end protrudes upward from the bearing 22 and constitutes an operation portion 21E.
[0023]
On the other hand, 23 is provided with a center hole 23B through which the circular small-diameter portion 21D at the lower end of the operation shaft 21 is inserted at the center of the disc portion 23A, and a flat contact similar to that of the prior art on the lower surface of the disc portion 23A. A rotating contact body made of molded resin that fixes the plate 4 by insert molding or the like. As shown in the lower part of the external perspective view of FIG. The groove portion 23D provided as the holding portion rotates together with the projections 21B as the two non-circular engaging portions of the operation shaft 21, but is fitted so as to be movable up and down, and is provided at a position perpendicular to this. The pair of elastic claws 23E are fitted into the pair of engaging recesses 21C of the operation shaft 21 to form a retaining portion, thereby restricting the vertical movement of the operation shaft 21 within a certain range.
[0024]
A method of combining and coupling the rotary contact body 23 with the operation shaft 21 is as follows. In the state where both are single pieces as shown in FIG. 2A, the circular shape of the operation shaft 21 is inserted into the center hole 23B of the rotary contact body 23. A pair of elastic claws of the rotating contact body 23 is inserted by inserting the diameter portion 21D and combining the two protrusions 21B of the operating shaft 21 with the two groove portions 23D of the rotating contact body 23. 23E can be easily and reliably fitted into the engaging recess 21C of the operating shaft 21 while opening due to its elasticity, so that the operating shaft 24 with a rotating contact body can be obtained as shown in FIG. 2 (b).
[0025]
Then, three elastic contacts 8 extended from the lower fixed substrate 6 facing the planar contact plate 4 on the lower surface of the disk portion 23A of the rotating contact body 23 with a predetermined interval are respectively formed on the planar contact plate 4. The rotating component part (encoder part) 25 is formed in elastic contact with the central circular part and the linear part (both not shown) as in the case of the prior art.
[0026]
Furthermore, a central fixed contact 11A and an outer peripheral fixed contact 11B are fixed to the upper surface of the switch substrate 10 disposed below the fixed substrate 6 by insert molding, and a dome-shaped movable contact made of an elastic metal thin plate is placed on the outer peripheral fixed contact 11B. The push switch portion 13 is configured by being mounted on the dome-shaped movable contact 12 at the center of the rotary contact body 23 via the push plate 14. The circular thin-diameter portion 21D of the operating shaft 21 that protrudes downward through the hole 23B is in contact. In this state, the elastic claw portion 23E of the rotating contact body 23 is the lower end in the engaging recess 21C of the operating shaft 21. Located in the department. In other words, the operating shaft 21 is located at the upper end of the up and down movable range.
[0027]
Then, the bearing 22, the fixed board 6 and the switch board 10 arranged as described above are overlapped and sandwiched between the legs of the U-shaped mounting bracket 15 extended from above the bearing 22, and the whole is connected and fixed. It is the same as in the case of the prior art.
[0028]
The operation of the rotary operation type encoder with push switch configured as described above will be described.
[0029]
First, when the operation portion 21E of the operation shaft 21 is rotated, the rotary contact body is provided via the groove portion 23D of the wall portion 23C which is a non-circular holding portion fitted to the projection 21B which is a non-circular engagement portion of the operation shaft 21. 23 rotates together, the elastic contact 8 elastically slides against the flat contact plate 4 on the lower surface thereof, and outputs a pulse signal between the terminals 16 connected to each contact, thereby rotating part (encoder part) It functions as 25.
[0030]
Then, the operation shaft 21 does not move up and down during this rotation operation, and the push switch unit 13 does not operate, as in the case of the prior art.
[0031]
3, when a downward pressing force is applied to the operation portion 21E of the operation shaft 21 as indicated by an arrow, the projection 21B of the operation shaft 21 has a groove 23D of the wall portion 23C of the rotary contact body 23. The tip of the circular small diameter portion 21D that moves downward while being guided by the inner periphery and protrudes downward from the center hole 23B of the rotary contact body 23 pushes the dome-shaped movable contact 12 through the push plate 14 of the push switch portion 13. The center fixed contact 11A and the outer peripheral fixed contact 11B are connected to operate the push switch unit 13.
[0032]
When the pushing force applied to the operating portion 21E of the operating shaft 21 is removed, the push plate 14, that is, the operating shaft 21 is pushed up by the elastic restoring force of the dome-shaped movable contact 12 to return to the original state of FIG.
[0033]
During the push operation of the operating shaft 21, the rotating contact body 23 of the rotating component unit 25 does not move downward and of course does not rotate, so that the rotating component unit 25 does not operate as in the case of the prior art.
[0034]
As described above, according to the present embodiment, it is possible to provide a rotary operation type electronic component with a push switch in which the retaining portion of the operation shaft can be easily assembled at low cost.
[0035]
In the present embodiment, the outer wall of the elastic claw 23E of the rotary contact 23 constituting the retaining portion of the operation shaft 21 is made substantially the same as the inner diameter of the circular through hole 22A of the bearing 22, and the inner wall of the circular through hole 22A. When a strong pulling force is applied to the operating shaft 21, the inner wall of the circular through-hole 22A can be opened even if the elastic claw 23E tries to come out of the engaging recess 21C of the operating shaft 21 and open outward. Further, since the outer periphery of the elastic claw portion 23E is suppressed, the opening of the elastic claw portion 23E can be restricted, and the removal strength of the operation shaft 21 can be increased.
[0036]
In the above description, the case where the rotating component unit is a rotary operation type encoder has been described as an example, but it goes without saying that this may be another electronic component such as a rotary operation type variable resistor.
[0037]
(Embodiment 2)
FIG. 4 is a cross-sectional view for explaining a method of manufacturing a rotary operation type encoder with a push switch according to the second embodiment of the present invention. As shown in FIG. The cylindrical portion 22B and the base portion 22C of the bearing 22 are respectively fitted from the lower side between the upper surface central hole 15B and the opposed leg portions 15C, and then the operation shaft 21 and the rotary contact body 23 are coupled in advance in the form of a single piece. The operating portion 21E of the operating shaft 21 of the operating shaft with rotating contact body is inserted and fitted into the circular through hole 22A of the bearing 22 from below, and finally the switch block 26 is fixed with the fixed substrate 27 side facing upward from below. Rotating operation type encoder with push switch by fitting into the opposite leg portion 15C of the U-shaped mounting bracket 15 and bending the leg tip 15A at the back surface of the switch board 28. It is intended to be completed as.
[0038]
As shown in FIG. 5, the switch block 26 has the dome-shaped movable contact 12 and the push plate 14 placed in the recess 28 </ b> A at the center of the upper surface of the switch substrate 28, and then the fixed substrate 27 of the rotating component portion 29. The dowels 27A provided on the lower surface of the fixed substrate 27 made of molded resin are passed through the stepped holes 28B provided in the switch substrate 28, and the dowels 27A protruding into the stepped holes 28B on the back side of the switch substrate 28 are provided. The tip is joined by caulking.
[0039]
In this way, the component parts of the push switch unit 30 and the fixed substrate 27 of the rotary component unit 29 are integrated in advance as the switch block 26, so that the rotary operation type electronic component with push switch can be used as a reference with the U-shaped mounting bracket 15. As all the parts can be assembled from one direction, an efficient assembling work can be performed and an automatic machine can be easily assembled.
[0040]
【The invention's effect】
As described above, according to the present invention, the retaining portion of the operation shaft can be easily assembled and formed without using a C-shaped washer or the like. This provides an advantageous effect that it is possible to provide a rotary operation type electronic component with a large push switch.
[Brief description of the drawings]
FIG. 1 is a front cross-sectional view of a rotary operation encoder with a push switch which is a rotary operation electronic component with a push switch according to a first embodiment of the present invention. FIG. 3 is a perspective view of the rotating contact body in which the operating shaft and the rotating contact body are coupled together. FIG. 3 is a front sectional view of the rotating contact body pressed. Sectional drawing explaining the manufacturing method of the rotary operation type encoder with a push switch by a form. FIG. 5 is sectional drawing explaining the method to block the push switch part which is the principal part. FIG. 7 is a front sectional view of a rotary operation type encoder with a push switch, which is a type electronic component. FIG. 7 is a perspective view of a C-shaped washer that is the main part. ] When the same operating axis is pressed A cross-sectional view DESCRIPTION OF SYMBOLS
4 Flat contact plates 6, 27 Fixed substrate 8 Elastic contacts 10, 28 Switch substrate 11A Center fixed contact 11B Outer periphery fixed contact 12 Dome-shaped movable contact 13, 30 Push switch portion 14 Push plate 15 U-shaped mounting bracket 15A Leg tip 15B Upper surface center hole 15C Leg 16 Terminal 21 Operation shaft 21A Circular portion 21B Protrusion 21C Engaging recess 21D Circular thin diameter portion 21E Operation portion 22 Bearing 22A Circular through hole 22B Cylindrical portion 22C Base 23 Rotating contact body 23A Disk portion 23B Center Hole 23C Wall portion 23D Groove portion 23E Elastic claw portion 24 Operation shafts with rotary contact body 25, 29 Rotary component portion (encoder portion)
26 Switch block 27A Dowel 28A Recess 28B Stepped hole

Claims

円形貫通孔を有する軸受と、この軸受の円形貫通孔に円形中間部を回転および上下動可能に嵌合保持され上端部が軸受よりも上方に突出すると共に下方に非円形係合部および係合用凹部を有する操作軸と、円板部の上面に操作軸の非円形係合部に嵌合する非円形保持部および操作軸の係合用凹部にはまり込む弾性爪部を有し下面に可動接点を有する回転接点体ならびに可動接点と係合して電気信号を発生する固定接点を有する固定基板で形成される回転部品部と、この回転部品部の下方に配設されて操作軸の下端部で押されることにより動作するプッシュスイッチ部と、軸受と回転部品部およびプッシュスイッチ部を外方から連結固定するコの字形取付金具からなるプッシュスイッチ付回転操作型電子部品。A bearing having a circular through hole, and a circular intermediate hole fitted and held in the circular through hole of the bearing so as to be able to rotate and move up and down. An operating shaft having a recess, a non-circular holding portion that fits into a non-circular engaging portion of the operating shaft on the upper surface of the disc portion, and an elastic claw portion that fits into the engaging recess of the operating shaft, and a movable contact on the lower surface A rotating component part formed of a fixed substrate having a rotating contact body and a fixed contact that engages with a movable contact and generates an electric signal, and is disposed below the rotating component part and pressed by a lower end portion of an operation shaft. Rotating operation type electronic component with push switch comprising a push switch portion that operates by being operated, and a U-shaped mounting bracket that connects and fixes the bearing, the rotating component portion, and the push switch portion from the outside.

回転接点体の弾性爪部の外周を軸受の円形貫通孔の内壁に当接嵌合させた請求項１に記載のプッシュスイッチ付回転操作型電子部品。The rotary operation type electronic component with a push switch according to claim 1, wherein the outer periphery of the elastic claw portion of the rotary contact body is in contact with and fitted to the inner wall of the circular through hole of the bearing.

あらかじめ操作軸の非円形係合部と係合用凹部に回転接点体の非円形保持部および弾性爪部を係合させて操作軸と回転接点体を結合させた回転接点体付操作軸を、操作軸の上端部から軸受の円形貫通孔に挿入して組み立てる請求項１または２に記載のプッシュスイッチ付回転操作型電子部品の製造方法。An operation shaft with a rotating contact body, in which the non-circular holding portion and the elastic claw portion of the rotating contact body are engaged with the non-circular engaging portion and the engaging recess of the operating shaft in advance to connect the operating shaft and the rotating contact body, is operated. The method of manufacturing a rotary operation type electronic component with push switch according to claim 1 or 2, wherein the rotary operation type electronic component with push switch is assembled by being inserted into a circular through hole of a bearing from an upper end portion of the shaft.

プッシュスイッチ部の構成部品と回転部品部の固定基板を仮結合してスイッチブロックとし、コの字形取付金具を基準として下方から軸受、回転接点体付操作軸、スイッチブロックを順次積み重ねて組み合わせ、コの字形取付金具の脚部で全体を挟み込み、スイッチブロックの裏面で脚部先端を折り曲げることにより各部材を連結固定する請求項３に記載のプッシュスイッチ付回転操作型電子部品の製造方法。The components of the push switch part and the fixed board of the rotating part part are temporarily joined to form a switch block. From the bottom of the U-shaped mounting bracket, the bearing, the operating shaft with rotating contact body, and the switch block are stacked and combined in order. The manufacturing method of the rotary operation type electronic component with a push switch according to claim 3, wherein the members are connected and fixed by sandwiching the whole with the legs of the U-shaped mounting bracket and bending the ends of the legs on the back surface of the switch block.