JP3764799B2 - Rotating electrical parts - Google Patents

Rotating electrical parts Download PDF

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Publication number
JP3764799B2
JP3764799B2 JP14512997A JP14512997A JP3764799B2 JP 3764799 B2 JP3764799 B2 JP 3764799B2 JP 14512997 A JP14512997 A JP 14512997A JP 14512997 A JP14512997 A JP 14512997A JP 3764799 B2 JP3764799 B2 JP 3764799B2
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Prior art keywords
rotating body
ring
side wall
operation knob
case
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JP14512997A
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JPH10334766A (en
Inventor
新治 石川
伸也 佐々木
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明はビデオカメラ等の使用して好適な回転型電気部品に関する。
【0002】
【従来の技術】
従来において、Oリングを使用した可変抵抗器等の回転型電気部品は、図14に示すように、軸受け80を埋設した絶縁材の箱形のケース81の内部に、抵抗体82を取付、軸受け80に挿通されて支承された回転軸83には、抵抗体82上を摺動する摺動子84を取り付けた摺動子受け85を取り付けている。
また、ケース81の後方開口部81aは、蓋86によって塞がれ、回転軸83に設けられた溝83aに断面円形状のOリング87が圧入されて、Oリング87を、溝83a面と軸受け80内面とに圧接させた構成を有している。
【0003】
【発明が解決しようとする課題】
従来の回転型電気部品に使用されるOリング87は、ケース81の内部を防水するために使用されたものであり、回転軸83の回転トルクを重くする目的で、使用されたものではない。
しかし、このOリング87は、回転トルクを重くする役割もなすが、従来の回転軸83の溝83aにOリング87を圧入するものは、回転軸83の径が小さく、トルクを重くしようとすると、Oリング87に大きなストレスがかかるので、トルクを重くするのと、寿命を長くすことの両立が難しかった。
また、Oリング87の略全周を、溝83aと軸受け80に圧接させており、僅かなOリング87等の寸法の変化、バラツキによって、トルクの変化、バラツキが生じるという問題があった。
また、Oリング87の略全外周を圧接しているので、Oリング87の変形を逃がす場所がなく、回転トルクは部品寸法の変化、バラツキの要因を受けて安定したトルクを出すのが難しかった。
また、Oリング87は、断面円形状であるため、寸法変化、バラツキによって、Oリング87の接触面積が変わるので、安定したトルクを出すことが難しかった。
【0004】
【課題を解決するための手段】
上記課題を解決するための第1の解決手段として、底壁、及び筒状の第1側壁を有するケースと、回転可能な操作ツマミと、該操作ツマミと対向して配設すると共に、操作ツマミと共に回転され、底壁を有する回転体と、前記操作ツマミと前記回転体とを回転可能に支持する支軸と、前記ケースの底壁、或いは前記回転体の底壁の一方に設けられた摺動子と、前記ケースの底壁、或いは前記回転体の底壁の他方に設けられ、前記摺動子と摺接する導電パターンと、ゴム材から成るOリングとを備え、前記操作ツマミ、或いは回転体には、所定の隙間を設けて前記ケースの前記第1側壁に対峙する筒状の第2側壁を設け、該第2側壁の外側に出っ張り筒状の前記第2側壁の周方向において互いに間隔を有する複数の突起を形成すると共に、前記回転体、或いは前記ケースには、前記隙間内に位置する受け部を設け、前記第1側壁と前記第2側壁と前記受け部との間に囲まれた前記隙間に、前記Oリングを設け、該Oリングを、前記複数の突起の位置する部分で強く弾接した状態で前記第1と第2側壁に弾接させた構成とした。
また、第2の解決手段として、前記複数の突起を、回転可能な前記回転体の回転軸線方向から見て正三角形の頂点に位置するように配設させた構成とした。
【0005】
また、第3の解決手段として、前記隙間の高さを、前記Oリングの高さに比して大きくし、高さ方向に前記Oリングの逃げを設けた構成とした。
また、第4の解決手段として、前記Oリングの最外周と最内周とに平面部を設け、該平面部を、前記第1と第2側壁、又は前記第1と第2側壁と前記突起のそれぞれに弾接させた構成とした。
また、第5の解決手段として、前記回転体に、前記第2側壁と前記受け部とを形成した構成とした。
また、第6の解決手段として、前記第2側壁の外側に出っ張った前記複数の突起は、前記回転体の回転軸線方向において前記操作ツマミと対向して配設された側が前記操作ツマミに向かって延設されており、延設されたこれらの複数の突起がそれぞれ嵌入する複数の孔を前記操作ツマミに設けた構成とした。
【0006】
【発明の実施の形態】
次に、本発明の回転型電気部品を図1から図13に基づいて説明すると、図1は本発明の回転型電気部品の透視図、図2は本発明の回転型電気部品を押圧操作した状態を示す透視図、図3は図1のA−A線における断面図、図4は図2のB−B線における断面図、図5は図1のC−C線における断面図、図6は本発明の回転型電気部品の平面図、図7は本発明の回転型電気部品の裏面図、図8は本発明の回転型電気部品に係り、操作ツマミと回転体を取り外した状態を示す平面図、図9は図1のD−D線における断面図、図10は本発明の回転型電気部品に係り、弾性片の動作を説明するための断面図、図11は本発明の回転型電気部品の分解斜視図、図12は本発明の回転型電気部品に係るOリングの平面図、図13は図12のE−E線における断面図である。
【0007】
本発明の回転型電気部品は、図3に示すように、操作ツマミ1と、この操作ツマミ1を回転可能に保持するケース2と、これら操作ツマミ1及びケース2間に介設され、下面側に導電パターン3が一体形成された回転体4と、ケース2をスライド可能に保持する固定部材5と、これら操作ツマミ1と回転体4、ケース2及び固定部材5を貫通する支軸6と、略U字状に形成され、ケース2に復帰力を付与する戻しばね7と、ケース2と回転体4の隙間50に嵌入され、操作ツマミ1の回転操作時に所望の回転トルクを付与するOリング8とから主として構成されている。
【0008】
前記操作ツマミ1の中央部には支軸6を挿通するための挿通孔9が設けられ、また、挿通孔9を中心とした正三角形の頂部に孔1aが設けられており、図1に示すように、前記回転体4は、円形の底壁10に立設された外側の筒状の側壁11と、底壁10の中央部に立設された内側の円筒体12とから一体的に形成されている。
また、外側の側壁11には、操作ツマミ1の嵌入孔1aにそれぞれ嵌入すると共に、側壁11の外側に一部が出っ張った3つの突起13が設けられ、この3つの突起13は、正三角形の頂部に位置するように配設されている。
また、回転体4には、底壁10から延長して外方に突出したOリング8を支承するための円形状の受け部14が設けられると共に、内側の円筒体12には、支軸6を挿通するための挿通孔15が設けられている。
【0009】
図8に示すように、前記ケース2には底壁16aと、筒状の側壁16bと、この側壁16bの真中を横切る連結部17とが一体的に形成されている。この連結部17の中央には支軸6を挿通するための挿通孔18が設けられ、連結部17からスライド方向の前方(図8の下方向)に向かって下向きの摺動子19a〜19dが突出し、連結部17からスライド方向の後方(図8の上方向)に向かって上向きの摺動子20a〜20dが突出している。
このようなケース2は、導電性を有する一枚の金属板22と樹脂23とを一体成形した後、該金属板22のくびれ部22aを切断することにより、中央寄りの摺動子19d,20dから側部のA相用摺動子19a、20aを切り離し、他の中央寄りの摺動子19c,20cから側部のB相用摺動子19b,20bを切り離して製造される。更に、側壁16bのスライド方向の前方には、戻しばね7と当接する突起24が設けられている。
【0010】
また、図8に示すように、前記固定部材5には、ケース2のスライド方向に沿って形成された固定接点25a、25b,25cおよびスイッチパターン25dと、これら固定接点25a〜25cおよびスイッチパターン25dにそれぞれ電気的に接続される外部端子26a〜26dとが一体形成されている。なお、固定接点25cはコモン用であり、他の固定接点25a、25bはそれぞれA相用、B相用である。
また、図3から図5に示すように、固定部材5の中央部には支軸6を挿通するための長孔5aが設けられると共に、図7に示すように、下面側には支軸6の下端の鍔部6aを受け入れる楕円状の凹部27が設けられている。
この凹部27の手前側(スライド方向の後部)には、図3、図4に示すように、端部に向かって上方に傾斜するテーパ面27aが形成されており、奥行き側(スライド方向の前方)は平面状に形成されている。
【0011】
更に、図1に示すように、前記固定部材5の上面の両側部には、ケース2をスライド方向に案内する一対の壁部28、29が立設されている。一方の壁部28の上部から張り出し部30が内側に突出し、図10に示すように、該張り出し部30の下方にケース2の突部2aを受け入れ可能な受け部31と、戻しばね7の自由端7aを案内する案内部32とが形成され、これら受け部31および案内部32が仕切り壁33により仕切られている。
前記受け部31はスライド方向の後方の面、内側の側面および底面を開口した空間であり、前記案内部32は内側の側面および底面を開口した空間である。
図1に示すように、他方の壁部29の上部からも張り出し部34が内側に突出し、該張り出し部34の下方にケース2の突部2bを受け入れ可能な受け部35と、戻しばね7の折り曲げ部7bを収納する収納部36が設けられている。なお、前記張り出し部30、34および前記受け部31、35によって、前記ケース2の上下動を規制する規制手段が構成されている。
【0012】
更に、前記固定部材5の案内部32の近傍には、戻しばね7の自由端7aの移動方向(図1の上下方向)に沿ってスリット37、38が互いに平行に設けられ、該スリット37、38間に薄板状の弾性片39が形成されている。
この弾性片39は片持ち梁形であり、スライド方向の前方に位置する壁部5bに向かって突出し、該弾性片39の先端は前記壁部5bから所定間隔だけ離れている。また、この弾性片39は、戻しばね7の自由端7aと係脱する突部、例えば三角柱状のカム山40を有し、該カム山40は自由端7aの軸方向に沿って弾性片39上に一体的に形成されている。図9に示すように、前記戻しばね7の自由端7aは張り出し部30と弾性片39とによって挟まれており、該戻しばね7の自由端7aが図10の(a)に示す状態から(c)に示す状態まで移動する際に、張り出し部30に沿って案内される。この時、図10の(b)に示すように、該戻しばね7の自由端7aがカム山40の頂部を乗り越える際にカム山40を押圧するこにより、弾性片39が厚み方向へ弾性変形してクリック感を生起させる。
【0013】
図1に示すように、前記戻しばね7は自由端7aの先端を案内部32に挿入すると共に、折り曲げ部7bを収納部36に挿入した状態で固定部材5に装着されており、ケース2の突起24が戻しばね7に当接することにより、ケース2に対して復帰力を付与している。
また、前記Oリング8は、ゴム材から形成され、図12、図13に示すように、断面形状が多角形をなし、少なくとも最外周と最内周には、それぞれ平面部8a、8bが設けられた形状となっている。そして、このOリング8は、図3〜図5に示すように、ケース2の側壁16bの内周と、回転体4の側壁11の外周と、回転体4の受け部14および操作ツマミ1との間で形成される隙間50に嵌入されて取り付けられている。
そして、Oリング8が隙間50に取り付けられた際は、最外周の平面部8aは、ケース2の側壁16bに弾接し、また、最内周の平面部8bは、回転体4の側壁11に緩く弾接すると共に、突起13が位置する部分では、強く弾接した状態となっている。更に、隙間50の高さH(操作ツマミ1と受け部14間の距離)を、Oリング8の高さhよりも大きくして、Oリング8が取り付けられた際のOリング8の高さ方向の変形時の逃げを設けてあり、Oリング8の変形時においても、操作ツマミ1、及び受け部14には弾接せず、非接触か、軽く接触する程度と成っている。また、Oリング8は、グリス(図示せず)が塗布された状態で、隙間50に取り付けられていると共に、回転体4が回転した際、Oリング8はケース2の側壁16bへの弾接接触面が大きいため、Oリング8は移動せず、回転体4の突起13面がOリング8面上を弾接しながら摺動し、また、グリスの作用によって、Oリング8の回転体4との摩擦によって生じるしわ状態を少なくし、滑らかな回転体4の移動が出来る。
【0014】
この実施形態にあっては、上向きの摺動子20a〜20dと下向きの摺動子19a〜19dのうち、摺動子20aと摺動子19a、摺動子20bと摺動子19b,及び摺動子20c,20dと摺動子19c,19dとがそれぞれケース2の内部で電気的に接続されている。
また、上向きの摺動子20a、20bは導電パターン3の軌跡上に位置しており、残りの摺動子20c,20dは回転体4の導電パターンと一体の金属板22と常時接触している。
更に、下向きの摺動子19a〜19cはそれぞれ固定接点25a〜25cに常時接触しているが、残りの摺動子19dはスイッチパターン25dと接離可能に対向している。
【0015】
この状態で、操作ツマミ1を正・逆いずれかの方向へ回転操作すると、操作ツマミ1に連動して回転体4も回転し、摺動子20a、20bがくし歯状の導電パターン3と周期的に接離するため、A相用外部端子26aとコモン用外部端子26cおよびB相用外部端子26bとコモン用外部端子26cからそれぞれ第1の電気信号が出力される。
その際、回転体4の回転時、Oリング8の弾性によって、重い回転トルクが作用し、操作ツマミ1が安定した回転トルクで操作でき、操作ツマミ1を停止すると、Oリング8によって、操作ツマミ1はその位置で保持された状態となる。
【0016】
また、操作ツマミ1を図3に示す状態から右方向へ押圧操作すると、固定部材5に対して操作ツマミ1と回転体4、ケース2および支軸6が一体的に移動し、該支軸6の鍔部6aが固定部材5の下面側の凹部27内を摺動する。その際、下向きの摺動子19a〜19cは固定接点25a〜25c上をそれぞれ摺動するため、摺動子20aとA相用外部端子26aとの電気的接続、摺動子20bとB相用外部端子26bとの電気的接続、および摺動子20c,20dとコモン用外部端子26cとの電気的接続はそれぞれ維持される。
そして、操作ツマミ1を図4に示す移動端部まで押圧操作すると、残りの下向き摺動子19dがスイッチパターン25dに接触し、コモン用外部端子26cとスイッチ用外部端子26dとが導通するため、該外部端子26dから第2の電気信号が出力される。その際、戻しばね7の自由端7aがケース2の突起24により押圧されて弾性変形し、自由端7aが固定部材5の案内部32内を移動するため、図10の(a)〜(c)に示すように、戻しばね7の自由端7aがカム山40を乗り越えることによりクリック感が生起される。なお、図4に示す状態で操作ツマミ1を手放すと、戻しばね7の付勢力により操作ツマミ1、回転体4、ケース2及び支軸6が図3に示す当初の位置に押し戻される。
【0017】
このように構成された実施形態にあっては、一つの操作ツマミ1を回転又は押圧操作することにより、それぞれ異なる電気信号が出力されるものである。
また、押圧操作時のクリック感を生起するクリック機構も、戻しばね7の自由端7aを弾性片39のカム山40に係脱させるだけの単純構造であるため、回転操作時のクリック機構と相俟って小型で薄型の複合操作の回転型電機部品を提供できる。
また、押圧操作時に弾性片39が厚み方向に弾性変形するため、戻しばね7の自由端7aを押圧方向へ円滑に移動させることが出来ると共に、規制手段の規制によりケース2がスライド方向のみに移動するため、該ケース2のスライド動作を安定させることが出来、従って、押圧操作時の操作感触が良好となり、確実なクリック感を得ることが出来る。
【0018】
また、固定部材5の凹部27の一部(スライド方向の後方)に上方に傾斜するテーパ面27aを形成したため、戻しばね7のばね力を比較的小さい値に設定したとしても、操作ツマミ1の押圧操作を確実に行うことが出来る。即ち、操作ツマミ1の押圧状態を解除した際に、支軸6は戻しばね7のばね力のみによって図から図の状態に戻ろうとするが、支軸6の進行方向に上方に傾斜するテーパ面27aが形成されているため、支軸6の鍔部6aの端部が凹部27に引掛ることなく、戻り不良を防止することが出来る。一方、操作ツマミ1を図から図の状態に押圧操作する際は、支軸6は操作者の大きな力によって移動されるため、鍔部6aが凹部27に引掛ることなく、鍔部6aは進行方向(スライド方向の前方)に位置する凹部27の平坦面に沿って安定した状態で移動することが出来る。
【0019】
なお、上記実施形態では、回転体4に側壁11を設けたもので説明したが、この側壁11に代えて、操作ツマミ1に側壁を設けて隙間50を形成しても良く、また、隙間50内に位置する受け部14を、回転体4に設けたもので説明したが、ケース2に受け部を設けて、隙間50内に位置させても良く、更に、ケース2に摺動子20a〜20dを設け、回転体4に導電パターン3を設けたもので説明したが、ケース2に導電パターンを、また、回転体4に摺動子を設けても良いこと勿論である。
【0020】
【発明の効果】
本発明の回転型電部品においては、ゴム材から成るOリング8を、回転体4、或いは操作ツマミ1の側壁11と、ケース2の側壁16bとの間で形成される隙間50に嵌入して、操作ツマミ1に所望の回転トルクを得るようにしたため、Oリング8の径を大きくでき、重いトルクが得られると共に、安定したトルク出しができ、しかも、回転時、回転体4の圧接による摩擦にて生じるしわ状態の少ない円滑で、感触の良好な回転操作を提供できる。
また、回転体4に側壁11と受け部14を設けることにより、回転体4をケース2に組み込んで隙間50を形成し、その隙間50にOリング8を組み込みした後、操作ツマミ1の組立が出来て、その組立性が良好となり、生産性が良く、安価なものを提供できる。
また、Oリング8を押圧する複数の突起13を設けることにより、Oリング8への接触面積を減らすことが出来、部品の寸法の変化、バラツキに伴う回転トルクの変化、バラツキを小さく抑えることが出来る。
【0021】
また、複数の突起13を、正三角形の頂点に位置するように配設したため、Oリング8への回転方向の接触面を小さくし、安定した感触の良好なトルクが得られると共に、Oリング8を安定して保持できる。
また、隙間50の高さ方向にOリング8の逃げを設けたため、Oリング8が径方向のみで圧接され、トルクが安定すると共に、トルクの大きさを制御し易いものを提供できる。
また、Oリング8の最外周と最内周とに平面部を設けたため、接触面を大きく出来て、重いトルクが得られると共に、接触面積が一定に出来、部品の寸法の変化、バラツキに伴う回転トルクの変化、バラツキを極めて小さく抑えることが出来る。
更に、回転体4の突起13を、操作ツマミ1に係合させたため、操作ツマミ1と回転体4との組立が簡単で、小型となり、また、突起13を、Oリング8の押圧と操作ツマミ1への取り付けとを兼用でき、部品点数が少なく、小型で安価なものを提供できる。
【図面の簡単な説明】
【図1】本発明の回転型電気部品の透視図。
【図2】本発明の回転型電気部品を押圧操作した状態を示す透視図。
【図3】図1のA−A線における断面図。
【図4】図2のB−B線における断面図。
【図5】図1のC−C線における断面図。
【図6】本発明の回転型電気部品の平面図。
【図7】本発明の回転型電気部品の裏面図。
【図8】本発明の回転型電気部品に係り、操作ツマミと回転体を取り外した平面図。
【図9】図1のD−D線における断面図。
【図10】本発明の回転型電気部品に係り、弾性片の動作を説明するための断面図。
【図11】本発明の回転型電気部品の分解斜視図。
【図12】本発明の回転型電気部品に係るOリングの平面図。
【図13】図12のE−E線における断面図。
【図14】従来の回転型電気部品の断面図。
【符号の説明】
1 操作ツマミ
1a 嵌入孔
9a 挿通孔
2 ケース
2a、2b 突部
16a 底壁
16b 側壁
17 連結部
18 挿通孔
24 突起
3 導電パターン
4 回転体
10 底壁
11 側壁
12 円筒体
13 突起
14 受け部
15 挿通孔
5 固定部材
5a 長孔
5b 壁部
27 凹部
27a テーパ部
28、29 壁部
30、34 張り出し部
31、35 受け部
32 案内部
33 仕切り壁
36 収納部
37、38 スリット
39 弾性片
40 カム山
6 支軸
6a 鍔部
7 戻しばね
7a 自由端
7b 折り曲げ部
8 Oリング
8a、8b 平面部
19a 摺動子
19b 摺動子
19c 摺動子
19d 摺動子
20a 摺動子
20b 摺動子
20c 摺動子
20d 摺動子
25a 固定接点
25b 固定接点
25c 固定接点
25d スイッチパターン
26a 外部端子
26b 外部端子
26c 外部端子
26d 外部端子
50 隙間
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating electrical component suitable for use in a video camera or the like.
[0002]
[Prior art]
Conventionally, as shown in FIG. 14, a rotary electric component such as a variable resistor using an O-ring has a resistor 82 mounted inside a box-shaped case 81 made of an insulating material in which a bearing 80 is embedded. A rotating shaft 83 inserted and supported by 80 is attached with a slider receiver 85 to which a slider 84 that slides on the resistor 82 is attached.
Further, the rear opening 81a of the case 81 is closed by a lid 86, and an O-ring 87 having a circular cross section is press-fitted into a groove 83a provided in the rotating shaft 83, so that the O-ring 87 is supported by the surface of the groove 83a. 80 has a configuration in pressure contact with the inner surface.
[0003]
[Problems to be solved by the invention]
The O-ring 87 used for the conventional rotary electric component is used for waterproofing the inside of the case 81 and is not used for the purpose of increasing the rotational torque of the rotary shaft 83.
However, this O-ring 87 also plays a role of increasing the rotational torque. However, when the O-ring 87 is press-fitted into the groove 83a of the conventional rotating shaft 83, the diameter of the rotating shaft 83 is small, so that torque is increased. Since a large stress is applied to the O-ring 87, it is difficult to achieve both a heavy torque and a long life.
Further, the substantially entire circumference of the O-ring 87 is brought into pressure contact with the groove 83a and the bearing 80, and there is a problem that torque changes and variations are caused by slight changes and variations in the dimensions of the O-ring 87 and the like.
In addition, since almost the entire outer periphery of the O-ring 87 is in pressure contact, there is no place for the deformation of the O-ring 87 to escape, and it has been difficult to produce a stable torque due to changes in component dimensions and variations. .
Further, since the O-ring 87 has a circular cross section, the contact area of the O-ring 87 changes due to dimensional changes and variations, so it is difficult to produce a stable torque.
[0004]
[Means for Solving the Problems]
As a first means for solving the above-mentioned problem, a case having a bottom wall and a cylindrical first side wall, a rotatable operation knob, and an operation knob are disposed opposite to the operation knob. And a rotating body having a bottom wall, a support shaft that rotatably supports the operation knob and the rotating body, and a slide provided on one of the bottom wall of the case or the bottom wall of the rotating body. Provided with the moving element, the bottom wall of the case, or the other bottom wall of the rotating body, and having a conductive pattern that is in sliding contact with the slider and an O-ring made of a rubber material, the operation knob or the rotation the body, said tubular second sidewall facing the first sidewall provided, the circumferential direction of the second side wall outside Deppa Ri cylindrical the second side wall of said casing with a predetermined gap and forming a plurality of projections having a distance from one another in the The rolling element or the case is provided with a receiving portion positioned in the gap, and the O-ring is provided in the gap surrounded by the first side wall, the second side wall, and the receiving portion, the O-ring, has a structure obtained by elastic contact with the first and second side wall while being in contact strongly bullet at a portion positions of the plurality of protrusions.
Further, as a second solving means, the plurality of protrusions are arranged so as to be positioned at the apexes of an equilateral triangle when viewed from the rotation axis direction of the rotatable rotating body.
[0005]
As a third solving means, the height of the gap is made larger than the height of the O-ring, and the relief of the O-ring is provided in the height direction.
Further, as a fourth solving means, flat portions are provided on the outermost and innermost peripheries of the O-ring, and the flat portions are defined as the first and second side walls, or the first and second side walls and the protrusions. It was set as the structure contacted to each of.
Further, as a fifth solving means, the second side wall and the receiving portion are formed on the rotating body.
Further, as a sixth solving means, wherein said plurality of projections protrudes outwardly of the second side wall, said at the direction of the rotation axis of the rotary body side is disposed to face the operating knob is towards the operating knob The operation knob is provided with a plurality of holes which are extended and into which the plurality of extended protrusions are respectively inserted.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, the rotary electric component of the present invention will be described with reference to FIGS. 1 to 13. FIG. 1 is a perspective view of the rotary electric component of the present invention, and FIG. 2 is a pressing operation of the rotary electric component of the present invention. 3 is a cross-sectional view taken along line AA in FIG. 1, FIG. 4 is a cross-sectional view taken along line BB in FIG. 2, FIG. 5 is a cross-sectional view taken along line CC in FIG. Fig. 7 is a plan view of the rotary electric component of the present invention, Fig. 7 is a rear view of the rotary electric component of the present invention, and Fig. 8 relates to the rotary electric component of the present invention, and shows a state where the operation knob and the rotating body are removed. FIG. 9 is a sectional view taken along line D-D in FIG. 1, FIG. 10 is a sectional view for explaining the operation of the elastic piece according to the rotating electrical component of the present invention, and FIG. 11 is a rotating mold according to the present invention. FIG. 12 is a plan view of an O-ring according to the rotating electrical component of the present invention, and FIG. Kicking is a cross-sectional view.
[0007]
As shown in FIG. 3, the rotary electric component of the present invention is provided with an operation knob 1, a case 2 that rotatably holds the operation knob 1, and between the operation knob 1 and the case 2. A rotating body 4 in which the conductive pattern 3 is integrally formed, a fixing member 5 for holding the case 2 slidably, a support shaft 6 penetrating the operation knob 1 and the rotating body 4, the case 2 and the fixing member 5, A return spring 7 which is formed in a substantially U-shape and which is applied to the case 2 and a clearance 50 between the case 2 and the rotating body 4, and an O-ring which applies a desired rotational torque when the operation knob 1 is rotated. 8 is mainly composed.
[0008]
An insertion hole 9 for inserting the support shaft 6 is provided at the center of the operation knob 1, and a hole 1a is provided at the apex of an equilateral triangle centering on the insertion hole 9, as shown in FIG. As described above, the rotating body 4 is integrally formed from an outer cylindrical side wall 11 erected on the circular bottom wall 10 and an inner cylindrical body 12 erected at the center of the bottom wall 10. Has been.
In addition, the outer side wall 11 is provided with three protrusions 13 that are respectively inserted into the insertion holes 1a of the operation knob 1 and partly protrudes on the outer side of the side wall 11. It arrange | positions so that it may be located in a top part.
The rotating body 4 is provided with a circular receiving portion 14 for supporting an O-ring 8 extending from the bottom wall 10 and protruding outward, and the inner cylindrical body 12 has a support shaft 6. An insertion hole 15 is provided for inserting the.
[0009]
As shown in FIG. 8, the case 2 is integrally formed with a bottom wall 16a, a cylindrical side wall 16b, and a connecting portion 17 crossing the middle of the side wall 16b. An insertion hole 18 for inserting the support shaft 6 is provided in the center of the connecting portion 17, and downward sliders 19 a to 19 d from the connecting portion 17 toward the front in the sliding direction (downward in FIG. 8). Projecting, upward sliders 20a to 20d project from the connecting portion 17 toward the rear in the sliding direction (upward in FIG. 8).
In such a case 2, a single metal plate 22 having conductivity and a resin 23 are integrally formed, and then a constricted portion 22 a of the metal plate 22 is cut to thereby move the sliders 19 d and 20 d closer to the center. The side A-phase sliders 19a and 20a are separated from the other side, and the side B-phase sliders 19b and 20b are separated from the other center-side sliders 19c and 20c. Further, a protrusion 24 that comes into contact with the return spring 7 is provided in front of the side wall 16b in the sliding direction.
[0010]
As shown in FIG. 8, the fixed member 5 has fixed contacts 25a, 25b, 25c and a switch pattern 25d formed along the sliding direction of the case 2, and these fixed contacts 25a to 25c and a switch pattern 25d. External terminals 26a to 26d that are electrically connected to each other are integrally formed. The fixed contact 25c is for common, and the other fixed contacts 25a and 25b are for A phase and B phase, respectively.
As shown in FIGS. 3 to 5, a long hole 5a for inserting the support shaft 6 is provided at the center of the fixing member 5, and as shown in FIG. An elliptical concave portion 27 is provided to receive the flange portion 6a at the lower end.
As shown in FIGS. 3 and 4, a tapered surface 27 a that is inclined upward toward the end portion is formed on the front side of the recess 27 (rear part in the sliding direction), and the depth side (front in the sliding direction). ) Is formed in a planar shape.
[0011]
Further, as shown in FIG. 1, a pair of wall portions 28 and 29 that guide the case 2 in the sliding direction are provided upright on both sides of the upper surface of the fixing member 5. A protruding portion 30 protrudes inward from the upper portion of one wall portion 28, and as shown in FIG. 10, a receiving portion 31 that can receive the protruding portion 2a of the case 2 below the protruding portion 30, and a free spring 7 A guide portion 32 for guiding the end 7 a is formed, and the receiving portion 31 and the guide portion 32 are partitioned by a partition wall 33.
The receiving portion 31 is a space having an open rear surface, an inner side surface and a bottom surface in the sliding direction, and the guide portion 32 is a space having an inner side surface and a bottom surface opened.
As shown in FIG. 1, a protruding portion 34 protrudes inward from the upper portion of the other wall portion 29, and a receiving portion 35 that can receive the protruding portion 2 b of the case 2 below the protruding portion 34, and a return spring 7. A storage portion 36 for storing the bent portion 7b is provided. The overhanging portions 30 and 34 and the receiving portions 31 and 35 constitute restriction means for restricting the vertical movement of the case 2.
[0012]
Further, in the vicinity of the guide portion 32 of the fixing member 5, slits 37 and 38 are provided in parallel with each other along the moving direction (vertical direction in FIG. 1) of the free end 7a of the return spring 7. A thin plate-like elastic piece 39 is formed between 38.
The elastic piece 39 has a cantilever shape and protrudes toward the wall portion 5b positioned forward in the sliding direction, and the tip of the elastic piece 39 is separated from the wall portion 5b by a predetermined interval. The elastic piece 39 has a protrusion that engages with and disengages from the free end 7a of the return spring 7, for example, a triangular prism-shaped cam peak 40. The cam peak 40 extends along the axial direction of the free end 7a. It is integrally formed on the top. As shown in FIG. 9, the free end 7a of the return spring 7 is sandwiched between the projecting portion 30 and the elastic piece 39, and the free end 7a of the return spring 7 is in the state shown in FIG. When moving to the state shown in c), it is guided along the overhanging portion 30. At this time, as shown in FIG. 10B, the elastic piece 39 is elastically deformed in the thickness direction by pressing the cam peak 40 when the free end 7a of the return spring 7 gets over the top of the cam peak 40. To create a sense of click.
[0013]
As shown in FIG. 1, the return spring 7 is attached to the fixing member 5 with the free end 7 a inserted into the guide portion 32 and the bent portion 7 b inserted into the storage portion 36. The protrusion 24 abuts against the return spring 7 to apply a restoring force to the case 2.
Further, the O-ring 8 is formed of a rubber material, and as shown in FIGS. 12 and 13, the cross-sectional shape is a polygon, and at least the outermost periphery and the innermost periphery are provided with flat portions 8a and 8b, respectively. It has become a shape. As shown in FIGS. 3 to 5, the O-ring 8 includes the inner periphery of the side wall 16 b of the case 2, the outer periphery of the side wall 11 of the rotating body 4, the receiving portion 14 of the rotating body 4, and the operation knob 1. Are fitted into a gap 50 formed between them.
When the O-ring 8 is attached to the gap 50, the outermost peripheral plane portion 8 a elastically contacts the side wall 16 b of the case 2, and the innermost peripheral plane portion 8 b contacts the side wall 11 of the rotating body 4. While being loosely elastically contacted, the portion where the protrusion 13 is located is in a state of strong elastic contact. Further, the height H of the gap 50 (the distance between the operation knob 1 and the receiving portion 14) is made larger than the height h of the O-ring 8, and the height of the O-ring 8 when the O-ring 8 is attached. A relief at the time of deformation in the direction is provided, and even when the O-ring 8 is deformed, the operation knob 1 and the receiving portion 14 are not elastically contacted but are in non-contact or light contact. The O-ring 8 is attached to the gap 50 in a state where grease (not shown) is applied, and when the rotating body 4 is rotated, the O-ring 8 is elastically contacted to the side wall 16b of the case 2. Since the contact surface is large, the O-ring 8 does not move, the projection 13 surface of the rotator 4 slides while elastically contacting the O-ring 8 surface, and due to the action of grease, the O-ring 8 contacts the rotator 4 of the O-ring 8. The wrinkle state caused by the friction is reduced, and the smooth rotating body 4 can be moved.
[0014]
In this embodiment, among the upward sliders 20a to 20d and the downward sliders 19a to 19d, the slider 20a and the slider 19a, the slider 20b and the slider 19b, and the slider The moving elements 20c, 20d and the sliders 19c, 19d are electrically connected inside the case 2, respectively.
The upward sliders 20a and 20b are located on the path of the conductive pattern 3, and the remaining sliders 20c and 20d are always in contact with the metal plate 22 integral with the conductive pattern of the rotating body 4. .
Further, the downward sliders 19a to 19c are always in contact with the fixed contacts 25a to 25c, respectively, but the remaining slider 19d is opposed to the switch pattern 25d so as to be able to contact and separate.
[0015]
In this state, when the operation knob 1 is rotated in either the forward or reverse direction, the rotating body 4 also rotates in conjunction with the operation knob 1, and the sliders 20a and 20b are periodically connected to the comb-like conductive pattern 3. Therefore, first electrical signals are output from the A-phase external terminal 26a and the common external terminal 26c, and the B-phase external terminal 26b and the common external terminal 26c, respectively.
At that time, when the rotating body 4 is rotated, a heavy rotational torque acts due to the elasticity of the O-ring 8, the operation knob 1 can be operated with a stable rotational torque, and when the operation knob 1 is stopped, the operation ring 1 is operated by the O-ring 8. 1 is held at that position.
[0016]
When the operation knob 1 is pressed rightward from the state shown in FIG. 3, the operation knob 1, the rotating body 4, the case 2, and the support shaft 6 move integrally with respect to the fixed member 5, and the support shaft 6. The flange 6 a slides in the recess 27 on the lower surface side of the fixing member 5. At that time, since the downward sliders 19a to 19c slide on the fixed contacts 25a to 25c, respectively, the electrical connection between the slider 20a and the A phase external terminal 26a, the slider 20b and the B phase The electrical connection with the external terminal 26b and the electrical connection between the sliders 20c and 20d and the common external terminal 26c are maintained.
When the operation knob 1 is pressed to the moving end shown in FIG. 4, the remaining downward slider 19d comes into contact with the switch pattern 25d, and the common external terminal 26c and the switch external terminal 26d are electrically connected. A second electrical signal is output from the external terminal 26d. At that time, the free end 7a of the return spring 7 is pressed by the protrusion 24 of the case 2 to be elastically deformed, and the free end 7a moves in the guide portion 32 of the fixing member 5, so that (a) to (c) in FIG. ), The free end 7a of the return spring 7 climbs over the cam crest 40, and a click feeling is generated. When the operation knob 1 is released in the state shown in FIG. 4, the operation knob 1, the rotating body 4, the case 2, and the support shaft 6 are pushed back to the initial positions shown in FIG. 3 by the urging force of the return spring 7.
[0017]
In the embodiment configured as described above, different electrical signals are output by rotating or pressing one operation knob 1.
In addition, the click mechanism that causes a click feeling during the pressing operation is a simple structure that simply engages and disengages the free end 7a of the return spring 7 with the cam crest 40 of the elastic piece 39, and therefore, the click mechanism during the rotation operation is compatible with the click mechanism. As a result, it is possible to provide a small-sized and thin composite-type rotating electrical component.
Further, since the elastic piece 39 is elastically deformed in the thickness direction during the pressing operation, the free end 7a of the return spring 7 can be smoothly moved in the pressing direction, and the case 2 is moved only in the sliding direction by the restriction of the restriction means. For this reason, the sliding operation of the case 2 can be stabilized, and therefore the operational feeling during the pressing operation can be improved, and a reliable click feeling can be obtained.
[0018]
Further, since the tapered surface 27a inclined upward is formed on a part of the concave portion 27 of the fixing member 5 (backward in the sliding direction), even if the spring force of the return spring 7 is set to a relatively small value, the operation knob 1 The pressing operation can be performed reliably. That is, when releasing the pressing state of the operation knob 1, the support shaft 6 attempts to return from FIG. 4 only by the spring force of the return spring 7 in the state of FIG. 3, but slopes upward in the traveling direction of the support shaft 6 Since the tapered surface 27 a is formed, the end of the flange portion 6 a of the support shaft 6 is not caught by the concave portion 27, and a return failure can be prevented. On the other hand, when the operation knob 1 is pressed from the state shown in FIG. 3 to FIG. 4 , the support shaft 6 is moved by a large force of the operator. Can move in a stable manner along the flat surface of the recess 27 located in the traveling direction (forward in the sliding direction).
[0019]
In the above-described embodiment, the rotating body 4 is provided with the side wall 11. However, instead of the side wall 11, the operation knob 1 may be provided with a side wall to form the gap 50. Although the receiving portion 14 located inside is described as being provided on the rotating body 4, the receiving portion may be provided on the case 2 so as to be positioned in the gap 50. Although the description has been made with 20 d provided and the rotating body 4 provided with the conductive pattern 3, it is needless to say that the case 2 may be provided with a conductive pattern and the rotating body 4 may be provided with a slider.
[0020]
【The invention's effect】
In rotary electric component of the present invention, it fitted an O-ring 8 made of a rubber material, a rotating body 4 or side wall 11 of the operating knob 1, and a gap 50 formed between the side wall 16b of the case 2 Since the operation knob 1 can obtain a desired rotational torque, the diameter of the O-ring 8 can be increased, a heavy torque can be obtained, a stable torque can be obtained, and the rotating body 4 can be pressed during rotation. It can provide a smooth and good-feeling rotation operation with little wrinkle caused by friction.
Further, by providing the rotating body 4 with the side wall 11 and the receiving portion 14, the rotating body 4 is assembled into the case 2 to form a gap 50, and after the O-ring 8 is assembled into the gap 50, the operation knob 1 is assembled. As a result, the assemblability is improved, the productivity is good, and the inexpensive one can be provided.
Further, by providing the plurality of protrusions 13 that press the O-ring 8, the contact area with the O-ring 8 can be reduced, and the change in the dimensions of the components, the change in the rotational torque due to the variation, and the variation can be suppressed to a small extent. I can do it.
[0021]
In addition, since the plurality of protrusions 13 are disposed so as to be positioned at the apexes of the regular triangle, the contact surface in the rotational direction to the O-ring 8 can be made small, a stable and good torque can be obtained, and the O-ring 8 Can be held stably.
Further, since the relief of the O-ring 8 is provided in the height direction of the gap 50, the O-ring 8 is pressed in the radial direction only, the torque is stabilized, and the torque can be easily controlled.
In addition, since the flat portions are provided on the outermost and innermost circumferences of the O-ring 8, the contact surface can be enlarged, a heavy torque can be obtained, the contact area can be made constant, and the dimensional change and variation of parts are accompanied. Changes in rotational torque and variations can be minimized.
Further, since the protrusion 13 of the rotating body 4 is engaged with the operation knob 1, the assembly of the operation knob 1 and the rotating body 4 is simple and compact, and the protrusion 13 is pressed against the O-ring 8 and the operation knob. It can be used for both mounting to 1 and the number of parts is small, and a small and inexpensive one can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a rotating electrical component of the present invention.
FIG. 2 is a perspective view showing a state where a rotary electric component of the present invention is pressed.
3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along line BB in FIG.
FIG. 5 is a cross-sectional view taken along the line CC of FIG.
FIG. 6 is a plan view of a rotary electric component according to the present invention.
FIG. 7 is a rear view of the rotating electrical component of the present invention.
FIG. 8 is a plan view of the rotary electric component according to the present invention in which an operation knob and a rotary body are removed.
9 is a cross-sectional view taken along the line DD of FIG.
FIG. 10 is a cross-sectional view for explaining the operation of the elastic piece according to the rotary electric component of the present invention.
FIG. 11 is an exploded perspective view of the rotary electric component of the present invention.
FIG. 12 is a plan view of an O-ring according to the rotating electrical component of the present invention.
13 is a cross-sectional view taken along the line EE of FIG.
FIG. 14 is a cross-sectional view of a conventional rotating electrical component.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Operation knob 1a Insertion hole 9a Insertion hole 2 Case 2a, 2b Protrusion part 16a Bottom wall 16b Side wall 17 Connection part 18 Insertion hole 24 Protrusion 3 Conductive pattern 4 Rotating body 10 Bottom wall 11 Side wall 12 Cylindrical body 13 Protrusion 14 Receiving part 15 Insertion Hole 5 Fixing member 5a Long hole 5b Wall 27 Recessed portion 27a Tapered portion 28, 29 Wall portion 30, 34 Overhang portion 31, 35 Receiving portion 32 Guide portion 33 Partition wall 36 Storage portion 37, 38 Slit 39 Elastic piece 40 Cam pile 6 Support shaft 6a ridge portion 7 return spring 7a free end 7b bent portion 8 O-rings 8a, 8b plane portion 19a slider 19b slider 19c slider 19d slider 20a slider 20b slider 20c slider 20d Slider 25a Fixed contact 25b Fixed contact 25c Fixed contact 25d Switch pattern 26a External terminal 26b External terminal 26c External terminal 26d Outside Terminal 50 clearance

Claims (6)

底壁、及び筒状の第1側壁を有するケースと、回転可能な操作ツマミと、該操作ツマミと対向して配設すると共に、操作ツマミと共に回転され、底壁を有する回転体と、前記操作ツマミと前記回転体とを回転可能に支持する支軸と、前記ケースの底壁、或いは前記回転体の底壁の一方に設けられた摺動子と、前記ケースの底壁、或いは前記回転体の底壁の他方に設けられ、前記摺動子と摺接する導電パターンと、ゴム材から成るOリングとを備え、前記操作ツマミ、或いは回転体には、所定の隙間を設けて前記ケースの前記第1側壁に対峙する筒状の第2側壁を設け、該第2側壁の外側に出っ張り筒状の前記第2側壁の周方向において互いに間隔を有する複数の突起を形成すると共に、前記回転体、或いは前記ケースには、前記隙間内に位置する受け部を設け、前記第1側壁と前記第2側壁と前記受け部との間に囲まれた前記隙間に、前記Oリングを設け、該Oリングを、前記複数の突起の位置する部分で強く弾接した状態で前記第1と第2側壁に弾接させたことを特徴とする回転型電気部品。A case having a bottom wall and a cylindrical first side wall, a rotatable operation knob, a rotating body disposed opposite to the operation knob and rotated together with the operation knob and having a bottom wall, and the operation A support shaft that rotatably supports the knob and the rotating body, a slider provided on one of the bottom wall of the case or the bottom wall of the rotating body, the bottom wall of the case, or the rotating body A conductive pattern that is slidably contacted with the slider and an O-ring made of a rubber material, and the operation knob or the rotating body is provided with a predetermined gap to provide the a tubular second sidewall facing the first sidewall provided, thereby forming a plurality of projections having mutually intervals in the circumferential direction of the second side wall outside Deppa Ri cylindrical the second side wall, wherein The rotating body or the case is located in the gap. The O-ring is provided in the gap surrounded by the first side wall, the second side wall, and the receiving portion, and the O-ring is disposed at a portion where the plurality of protrusions are positioned. rotary electric part, characterized in that by elastic contact with the first and second side wall while contacting strongly bullet. 前記複数の突起を、回転可能な前記回転体の回転軸線方向から見て正三角形の頂点に位置するように配設させたことを特徴とする請求項1記載の回転型電気部品。  2. The rotating electrical component according to claim 1, wherein the plurality of protrusions are arranged so as to be positioned at the apexes of an equilateral triangle when viewed from the rotation axis direction of the rotatable rotating body. 前記隙間の高さを、前記Oリングの高さに比して大きくし、高さ方向に前記Oリングの逃げを設けたことを特徴とする請求項1、又は2記載の回転型電気部品。  The rotary electric component according to claim 1 or 2, wherein a height of the gap is made larger than a height of the O-ring, and a relief of the O-ring is provided in a height direction. 前記Oリングの最外周と最内周とに平面部を設け、該平面部を、前記第1と第2側壁、又は前記第1と第2側壁と前記突起のそれぞれに弾接させたことを特徴とする請求項1、又は2、又は3記載の回転型電気部品。  A flat portion is provided on the outermost periphery and the innermost periphery of the O-ring, and the flat portion is elastically contacted with each of the first and second sidewalls or the first and second sidewalls and the protrusion. The rotating electrical component according to claim 1, 2, or 3. 前記回転体に、前記第2側壁と前記受け部とを形成したことを特徴とする請求項1、又は2、又は3、又は4記載の回転型電気部品。  5. The rotating electrical component according to claim 1, 2, 3, or 4, wherein the second side wall and the receiving portion are formed on the rotating body. 前記第2側壁の外側に出っ張った前記複数の突起は、前記回転体の回転軸線方向において前記操作ツマミと対向して配設された側が前記操作ツマミに向かって延設されており、延設されたこれらの複数の突起がそれぞれ嵌入する複数の孔を前記操作ツマミに設けたことを特徴とする請求項5記載の回転型電気部品。The plurality of protrusions protruding outside the second side wall are extended so that a side of the plurality of protrusions facing the operation knob in the rotation axis direction of the rotating body extends toward the operation knob. 6. The rotary electric component according to claim 5, wherein a plurality of holes into which the plurality of protrusions are respectively inserted are provided in the operation knob.
JP14512997A 1997-06-03 1997-06-03 Rotating electrical parts Expired - Lifetime JP3764799B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000260264A (en) * 1999-03-11 2000-09-22 Alps Electric Co Ltd Combined control type electric component
JP3723714B2 (en) * 2000-03-09 2005-12-07 アルプス電気株式会社 Rotating electrical parts
CN108831787A (en) * 2018-07-30 2018-11-16 东莞市林积为实业投资有限公司 A kind of multimedia rotary switch

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