JP3775956B2

JP3775956B2 - Rotary encoder

Info

Publication number: JP3775956B2
Application number: JP35134199A
Authority: JP
Inventors: 喜三郎高橋
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 1999-12-10
Filing date: 1999-12-10
Publication date: 2006-05-17
Anticipated expiration: 2019-12-10
Also published as: JP2001167666A

Description

【０００１】
【発明の属する技術分野】
本発明は、コンピュータ端末機器、携帯用通信機器、音響機器等に使用される回転型エンコーダに関する。
【０００２】
【従来の技術】
従来の回転型エンコーダーの構成を図５１〜図５５に基づいて説明すると、合成樹脂の成型品からなる絶縁基台５１は、中心部に孔５１ａを有する基板部５１ｂと、この基板部５１ｂの両端部から直角状態に延びた一対の腕部５１ｃと、この腕部５１ｃの端部に設けられ、一部が切り欠きされた孔からなる支持部５１ｄとを有する。
金属板からなる接触片５２と共通接触片５３は、接触部５２ａ、５３ａと端子部５２ｂ、５３ｂとを有し、この接触片５２と共通接触片５３は、並列された状態で、基板部５１ｂに埋設されて取り付けられ、接触部５２ａ、５３ａが孔５１ａに位置すると共に、端子部５２ｂ、５３ｂが基板部５１ｂから外方に突出した状態となっている。
【０００３】
金属板からなる弾性板５４が接触片５２、共通接触片５３と共に並設された状態で、基板部５１ｂに取り付けられている。
円筒状の回転体５５は、合成樹脂の成型品からなる円筒部５６と、この円筒部５６の外円周面に設けられた導電材からなるコード部材５７とで構成されている。
また、コード部材５７は、導電性樹脂で２回成型によって形成されており、そして、円筒部５６の外円周面には、コモンパターン５７ａと、櫛歯状のコードパターン５７ｂと、クリック用の凹凸部５６ａとが形成され、これらのコモンパターン５７ａ、コードパターン５７ｂ、及び凹凸部５６ａは、回転軸方向に並設されたものとなっている。
また、円筒部５６の両端面には、軸部５６ｂが設けられると共に、中心部には非円形状の孔５６ｃが形成されている。
【０００４】
そして、この回転体５５は、軸部５６ｂが一対の腕部５１ｃの支持部５１ｄにスナップ止めされて、絶縁基台５１に回転可能に取り付けられ、回転体５５が取り付けられた際、コモンパターン５７ａには共通接触片５３の接触部５３ａが接触し、また、コードパターン５７ｂには、接触片５２の接触部５２ａが接触し、更に、凹凸部５６ａには、弾性板５４が弾接している。
また、ドーム状のカバー５８が回転体５５を覆うように絶縁基台５１に取り付けられて、エンコーダ本体部Ｅ２が構成されている。
そして、このようなエンコーダ本体部Ｅ２は、図５３に示すように、絶縁基台５１の下面をプリント基板Ｐ２に載置すると共に、接触片５２と共通接触片５３の端子部５２ｂ、５３ｂをプリント基板Ｐ２の孔に挿通して、端子部５２ｂ、５３ｂを配線パターン（図示せず）に半田付けすることによって、エンコーダ本体部Ｅ２がプリント基板Ｐ２に取り付けられた構成となっている。
【０００５】
そして、このような構成を有する回転型エンコーダの動作を説明すると、先ず、回転体５５の孔５６ｃには、駆動軸（図示せず）が挿入された状態にあって、外部からこの駆動軸を回転すると、回転体５５が回転する。
すると、コード部材５７も回転して、コモンパターン５７ａには共通接触片５３が常時接触すると共に、コードパターン５７ｂには接触片５２が接離して、共通接触片５３と接触片５２と間にパルス信号が発生するようになる。
また、回転体５５の回転に伴う凹凸部５６ａによって、弾性板５４が凹凸部５６ａに係脱して、回転体５５がクリック動作するようになる。
このようにして回転型エンコーダの動作が行われるものである。
【０００６】
【発明が解決しようとする課題】
従来の回転型エンコーダにおいて、転体５５の外円周面には、回転軸方向にコモンパターン５７ａとコードパターン５７ｂが並設されたものであるため、回転軸方向に大型になるという問題がある。
【０００７】
そこで、本発明は安価で、小型の回転型エンコーダを提供するものである。
【０００８】
【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、絶縁材からなり、回転可能な円柱状、円筒状、或いは円錐台状の回転体と、この回転体の外表面に設けられたコードパターンと、このコードパターンに接触する複数個の接触片とを備え、前記回転体の円周面には、前記コードパターンが設けられると共に、前記回転体の回転軸方向と直交する回転体の端面には、前記コードパターンと導通するコモンパターンが設けられ、このコモンパターンに共通接触片を接触させると共に、複数個の前記接触片は、前記回転体の前記円周面を挟んで互いに反対側の位置に配置され、前記共通接触片は、前記回転体の前記端面に対向する位置に配置された構成とした。
【０００９】
また、第２の解決手段として、前記回転体の外円周面に前記コードパターンが設けられた構成とした。
また、第３の解決手段として、前記回転体は円筒状をなし、前記回転体の内円周面に前記コードパターンが設けられた構成とした。
【００１０】
また、第４の解決手段として、前記接触片と前記共通接触片は、絶縁材からなる絶縁基台に取り付けられ、前記接触片と前記共通接触片は、前記絶縁基台を基準面として前記回転体方向に延びて設けられた構成とした。
【００１１】
【発明の実施の形態】
本発明の回転型エンコーダを図１〜図５０に基づいて説明すると、図１は本発明の回転型エンコーダの正面図、図２は本発明の回転型エンコーダの裏面図、図３は本発明の回転型エンコーダの上面図、図４は本発明の回転型エンコーダの下面図、図５は本発明の回転型エンコーダの分解斜視図、図６は本発明の回転型エンコーダの要部断面側面図、図７は本発明の回転型エンコーダの要部断面正面図、図８は本発明の回転型エンコーダに係り、絶縁基台と回転体とを組み合わせた斜視図である。
【００１２】
また、図９は本発明の回転型エンコーダに係る絶縁基台の第１実施例の正面図、図１０は本発明の回転型エンコーダに係る絶縁基台の第１実施例の側面図、図１１は本発明の回転型エンコーダに係る絶縁基台の第１実施例の下面図、図１２は本発明の回転型エンコーダに係り、第１実施例の絶縁基台と接触片との関係を示す説明図、図１３は本発明の回転型エンコーダに係る絶縁基台の製造方法を示す説明図である。
【００１３】
また、図１４は本発明の回転型エンコーダに係る絶縁基台の第２実施例の正面図、図１５は本発明の回転型エンコーダに係る絶縁基台の第２実施例の側面図、図１６は本発明の回転型エンコーダに係る絶縁基台の第２実施例の下面図、図１７は本発明の回転型エンコーダに係り、第２実施例の絶縁基台と接触片との関係を示す説明図である。
【００１４】
また、図１８は本発明の回転型エンコーダに係る回転体の第１実施例の正面図、図１９は本発明の回転型エンコーダに係る回転体の第１実施例の側面図、図２０は本発明の回転型エンコーダに係る回転体の第１実施例の裏面図、図２１は本発明の回転型エンコーダに係る回転体の第１実施例の断面側面図、図２２〜図２５は本発明の回転型エンコーダに係り、第１実施例の回転体とコード部材の製造方法を示す説明図、図２６は本発明の回転型エンコーダに係るコード部材の斜視図である。
【００１５】
また、図２７は本発明の回転型エンコーダに係る回転体の第２実施例の正面図、図２８は本発明の回転型エンコーダに係る回転体の第２実施例の側面図、図２９は本発明の回転型エンコーダに係る回転体の第２実施例の裏面図、図３０は本発明の回転型エンコーダに係る回転体の第２実施例の断面側面図、図３１は本発明の回転型エンコーダに係り、第２実施例の回転体とコード部材の取付方法を示す斜視図、図３２は本発明の回転型エンコーダに係り、第２実施例の回転体とコード部材が組み合わされた状態を示す正面図、図３３は本発明の回転型エンコーダに係り、第２実施例の回転体とコード部材が組み合わされた状態を示す側面図である。
【００１６】
また、図３４は本発明の回転型エンコーダに係る係合部材の正面図、図３５は本発明の回転型エンコーダに係る係合部材の上面図、図３６は本発明の回転型エンコーダに係る係合部材の下面図、図３７は図３５の３７−３７線における断面図である。
【００１７】
また、図３８は本発明の回転型エンコーダに係る取付板の第１実施例の斜視図、図３９は本発明の回転型エンコーダに係る取付板の第１実施例の正面図、図４０は本発明の回転型エンコーダに係る取付板の第１実施例の側面図、図４１は本発明の回転型エンコーダに係る取付板の第１実施例の下面図、図４２は本発明の回転型エンコーダに係り、第１実施例の取付板をエンコーダ本体部に取り付けた状態を示す斜視図、図４３は本発明の回転型エンコーダに係り、第１実施例の取付板をエンコーダ本体部に取り付けた状態を示す要部断面図、図４４は本発明の回転型エンコーダに係り、第１実施例の取付板のエンコーダ本体部への取り付けを示す斜視図である。
【００１８】
また、図４５は本発明の回転型エンコーダに係る取付板の第２実施例の正面図、図４６は本発明の回転型エンコーダに係る取付板の第２実施例の側面図、図４７は本発明の回転型エンコーダに係る取付板の第２実施例の裏面図、図４８は本発明の回転型エンコーダに係り、第２実施例の取付板をエンコーダ本体部に取り付けた状態を示す斜視図、図４９は本発明の回転型エンコーダに係り、第２実施例の取付板をエンコーダ本体部に取り付けた状態を示す裏面図、図５０は本発明の回転型エンコーダに係り、第２実施例の取付板をエンコーダ本体部に取り付けた状態を示す側面図である。
【００１９】
次に、本発明の回転型エンコーダの構成を図１〜図５０に基づいて説明すると、絶縁材の成型品からなる第１実施例の絶縁基台１は、図１〜図１１に示すように、矩形状の主基台部２と、主基台部２から直角に直立状態に設けられた側壁部３と、この主基台部２の両側から薄肉部４によって連結された一対の副基台部５とで構成されている。
そして、主基台部２には、その両側の端面に設けられた凹部２ａと、正面の端面の中央部に設けられた円柱状の凸部２ｂと、下面に設けられたテーパー部を有する一対の掛け止め部２ｃとを有する。
【００２０】
また、側壁部３は、主基台部２の上面の角部から直立状態に設けられ、この側壁部３には、中心部に設けられた鍔部３ａを有する円形状の孔３ｂと、この孔３ｂの両側から主基台部２に至って設けられた一対の逃げ孔３ｃと、上部から直角方向に延びる一対の上壁部３ｄと、一対の上壁部３ｄ間に設けられた溝部３ｅと、一対の上壁部３ｄの上面に設けられた段差を有する掛け止め部３ｆと、突起３ｇとを有する。
また、一対の副基台部５は、先端が丸みを持って端面に設けられた凸部５ａと、凸部５ａの下面に設けられた小さい凸条部５ｂ（図１１参照）とを有する。
【００２１】
そして、この絶縁基台１は、図５に示す状態から薄肉部４を折り曲げて、主基台部２の凹部２ａに、副基台部５の凸部５ａを圧入することによって、図８に示すように、矩形状の絶縁基台１が形成されるものである。
この時、副基台部５に設けた凸条部５ｂは、副基台部５の凹部２ａへの圧入を容易にすると共に、確実にするものである。
【００２２】
金属板からなる第１実施例の複数個の接触片６は、接触部６ａと、端子部６ｂとを有し、この複数個の接触片６は、それぞれ副基台部５に埋設されて取り付けられ、接触部６ａは絶縁基台１の上面から上方に突出すると共に、端子部６ｂは絶縁基台１の下面から下方に突出して、先端部の平坦面が絶縁基台１の一端、即ち、側壁部３とほぼ同一の位置において、平行な状態で位置するように折り曲げられている。
【００２３】
金属からなる第１実施例の共通接触片７は、一対の接触部７ａと、端子部７ｂとを有し、この共通接触片７は、側壁部３側に近い主基台部２の位置に埋設されて取り付けられ、接触部７ａは絶縁基台１の上面から上方に突出して、側壁部３の逃げ孔３ｃに位置すると共に、端子部７ｂは絶縁基台１の下面から下方に突出して、先端部平坦面が絶縁基台１の一端、即ち、側壁部３とほぼ同一の位置において、平行な状態で位置するように折り曲げられている。
その結果、側壁部３面を基準として、取り付けできる伏せ型の取付状態となるものである。
【００２４】
また、この実施例において、複数個の接触片６の一部は、主基台部２と副基台部５とに跨って埋設されており、この接触片５の一部で、前述した主基台部２と副基台部５とを連結する薄肉部４が形成されたものとなっている。
なお、この薄肉部４は、接触片６とは別の板状の金属部材を絶縁基台１に埋設して、この金属部材で薄肉部４を形成しても良く、更に、主基台部２と副基台部５とを連結する薄肉部４は、絶縁基台１を構成する絶縁材からなる薄肉部４で形成しても良い。
【００２５】
次に、この絶縁基台１と、接触片６，及び共通接触片７の製造方法を図１３に基づいて説明すると、先ず、フープ材からなる金属板２１には、複数個の孔２２を設けて、上部桟部２１ａと下部桟部２１ｂとを形成する。
また、孔２２の形成によって、金属板２１の中央部の孔２２には、共通接触片７の接触部７ａを形成するためのループ状部２１ｃが設けられると共に、ループ状部２１ｃの一部には、共通接触片７の端子部７ｂが連結部２１ｄによって下部桟部２１ｂに繋がれた状態となっている。
【００２６】
また、このループ状部２１ｃと連結部２１ｄの両側には、接触片６の接触部６ａが連結部２１ｅによって上部桟部２１ａに繋がれ、そして、接触片６の端子部６ｂが連結部２１ｆによって下部桟部２１ｂに繋がれると共に、接触部６ａと端子部６ｂとは接続片２１ｇによって繋がれて、この接続片２１ｇが薄肉部４となとなり、更に、接触片６ａの下部は、接触片６ａの成型時の保持を確実にするために、連結部２１ｈによって下部桟部２１ｂに繋がれた状態となっている。
【００２７】
そして、このように構成された金属板２１は、成形金型（図示せず）によって挟持され、形成金型に樹脂を注入すると、図１３の２点鎖線で示すように、絶縁基台１の主基台部２，側壁部３，及び副基台部５が形成され、その後、線２３の位置で切断すると、接触片６，共通接触片７が金属板２１から切り離されると共に、共通接触片７の接触部７ａがループ状部２１ｃから切り離されて、片持ち状の一対の接触部７ａとなり、その結果、図９に示すような絶縁基台１が製造されるものである。
【００２８】
また、図１４〜図１７は、絶縁基台１、接触片６，及び共通接触片７の第２実施例を示し、この実施例においては、前述の第１実施例とは、接触片６，共通接触片７の端子部６ｂ、７ｂの形状が異なるだけで、その他の構成、及び製造方法は第１実施例と同様であるので、同一部品に同一番号を付し、ここではその説明を省略する。
即ち、この第２実施例では、端子部６ｂ、７ｂが絶縁基台１の下面側から突出して、その先端部をＬ字状に折り曲げしたものである。
【００２９】
絶縁材の成型品からなり、第１実施例の円筒状の回転体８は、特に図１８〜図２１に示すように、一端側に設けられた軸部８ａと、この軸部８ａに繋がって形成され、軸部８ａよりも大きな径の保持部８ｂと、保持部８ｂの一方側である回転軸方向と直交する端面８ｃに設けられたクリック用の凹凸部８ｄと、軸部８ａと保持部８ｂとの間に設けられ、保持部８ｂの他方側である回転軸方向と直交する端面８ｅと、中心部に設けられた六角状の非円形状の孔８ｆと、軸部８ａの外周の端部に設けられた係止部８ｇとを有する。
【００３０】
金属板からなる第１実施例のコード部材９は、特に図２６に示すように、コモンパターンを形成するリング状の板状部９ａと、この板状部９ａの内周部から折り曲げられ、コードパターンを形成する複数個の舌片９ｂとを有する。
そして、このコード部材９は、回転体８に埋設されて取り付けられ、コモンパターンを形成するリング状の板状部９ａが端面８ｅに位置すると共に、コードパターンを形成する舌片９ｂが保持部８ｂの外円周面に露出した状態となっている。
【００３１】
そして、このような回転体８とコード部材９の製造方法を図２２〜図２６に基づいて説明すると、図２２に示すように、フープ状の金属板２５の中心部において、櫛歯状の孔２６を設けて、舌片９ｂを形成する。
なお、舌片９ｂの先端は、面取りされた形状になっており、長さを長く設定できるようになっている。
次に、図２３、図２４に示すように、十字状の位置に孔２７を設けて、桟部２５ａを形成すると共に、この桟部２５ａに連結部２５ｂで連結された板状部９ａを形成し、且つ、舌片９ｂを板状部９ａから折り曲げる。
次に、図２５に示すように、二つの金型２８，２９で板状部９ａを挟持すると共に、舌片９ｂを金型２９の溝部２９ａで保持した状態で、二つの金型２８，２９の空洞部３０に樹脂を注入すると、回転体８が形成され、その後、図２３に示すように、線３１の位置で切断すると、図２６に示すようなコード部材９が回転体８に埋設された状態となって、回転体８とコード部材９の製造が完了する。
なお、図２５に示す工程において、金型２９の溝部２９ａの寸法は、舌片９ｂの寸法より若干小さめに設定されており、また、溝部２９ａの入り口はテーパー状に形成されていて、舌片９ｂは隙間無く溝部２９ａ内に収納されており、その状態で樹脂が注入されるので、舌片９ｂの外表面に樹脂膜が形成されることはない。
また、この金型２９は舌片９ｂを押さえる箇所において、前記クリック用の凹凸部８ｄの凹部の一部を形成している。
【００３２】
また、図２７〜図３３は、回転体８とコード部材９の第２実施例を示し、この実施例は、コード部材９が回転体８に嵌入して取り付けられたものである。
そして、回転体８には、前記第１実施例の構成の他に、保持部８ｂの外円周面において、回転軸方向に複数個の溝部８ｈを設けたものであり、その他の構成は前記実施例と同様であるので、同一部品に同一番号を付し、ここではその説明を省略する。
また、コード部材９は、図３１に示すように、コモンパターンを形成するリング状の板状部９ａと、この板状部９ａから折り曲げられ、コードパターンを形成する舌片９ｂとが予め形成されたものとなっている。
【００３３】
そして、図３１に示すように、回転体８の端面８ｅ側にコード部材９を位置させた状態で、舌片９ｂの先端の面取り部をガイドにして、この舌片９ｂを溝部８ｈに圧入によって嵌入すると、図３２，図３３に示すように、板状部９ａが端面８ｅに位置すると共に、舌片９ｂが保持部８ｂの外円周面に露出した状態で、コード部材９が回転体８に取り付けられた状態となる。
【００３４】
そして、第１，第２実施例のような構成を有する回転体８とコード部材９は、回転体８の軸部８ａを側壁部３の孔３ｂに挿入されて、回転可能に保持される。
そして、回転体８が絶縁基台１に取り付けられた時、係止部８ｇが孔３ｂから抜き出て、回転体８の抜け止めを行うと共に、共通接触片７の一対の接触部７ａが端面８ｅと対向した状態となって、コード部材９のコモンパターンである板状部９ａに接触した状態となる。
また、回転体８が絶縁基台１に取り付けられた時、複数個の接触片６は、それぞれ回転体８の円周面を挟んで互いに反対側の位置に配置され、コード部材９のコードパターンである舌片９ｂに接離するようになると共に、この接触片６の回転体８への弾圧状態は、図１２，図１７に示すように、絶縁基台１から延びる接触部６ａが回転体８の回転中心を越えた位置で弾圧するようにしてある。
そして、一対の接触部６ａが位相差を持ってコードパターンと接するようにしている。
【００３５】
なお、前記回転体８は円筒状のもので説明したが、円柱状、或いは円錐台状のものでも良い。
また、コード部材９は、舌片９ｂが板状部９ａの内周部から折り曲げしているので、連結部２５を外周の任意の位置に配置でき、舌片９ｂの間隔を狭くしてもフープ材による連続加工が可能であるが、舌片９ｂが板状部９ａの外周部から折り曲げしたものでも良い。
更に、コード部材９の舌片９ｂは、円筒状の回転体８の外円周面に設けたもので説明したが、舌片９ｂが円筒状の回転体８の内円周面に設けたものでも良い。
更に、コード部材９は、金属板を使用したもので説明したが、金属材の挽き物、導電性粉、メッキ等によりコードパターン、コモンパターンを形成しても良い。
【００３６】
金属板からなる係合部材１０は、特に図３４〜図３７に示すように、矩形の板状の基部１０ａと、この基部１０ａの中央部にＣ字状に切り曲げされ、先端部に凸部を有する係合部１０ｂと、基部１０ａの下部に設けられた円形の孔１０ｃと、基部１０ａの両側部から折り曲げされた一対の側板１０ｄと、この側板１０ｄに設けられた切り起こし部１０ｅと、基部１０ａの上辺から折り曲げられ、先端部に係止部１０ｆを有するＴ型の上辺板１０ｇと、基部１０ａの下辺から折り曲げられ、中央部に矩形状の孔１０ｈを有するＣ字状の下辺板１０ｊとを有する。
【００３７】
そして、この係合部材１０は、係合部１０ｂが凹凸部８ｄを設けた回転体８の端面８ｃと対向するように絶縁基台１に合わせて、孔１０ｃに凸部２ｂを挿入する。
しかる後、上辺板１０ｇを上壁部３ｄ上に位置させて押し込み、係止部１０ｆを掛け止め部３ｆに掛け止めすると共に、上辺板１０ｇを溝部３ｅに位置させて、上辺部１０ｇが側壁部３に取り付けられる。
そして、この上辺板１０ｇの取付と同時に、下辺板１０ｊを主基台部２の下面に位置させて押し込み、孔１０ｈに掛け止め部２ｃを位置させて、下辺板１０ｊが掛け止め部２ｃに掛け止めされて、下辺板１０ｊが主基台部２に取り付けられる。
このようにして、係合部材１０は、回転体８に対して上下の位置で取り付けられた状態となると共に、側板１０ｄは、回転体８に対して左右の位置に配置されて状態となっている。
また、係合部材１０が取り付けられた時、係合部１０ｂの凸部は、回転体８の端面８ｃに設けられた凹凸部８ｄと係脱可能な状態で、凹凸部８ｄに係合してクリック機構を構成している。
更に、係合部材８，接触片６，及び共通接触片７は、絶縁基台１を基準面として、回転体８方向に延びた状態となっている。
【００３８】
そして、このような構成によって、エンコーダ本体部Ｅ１が形成されている。
また、半田付け可能な金属板からなる第１実施例の取付板１１は、図３８〜図４４に示すように、中央部に設けられた円形の大きな孔１１ａと下部に設けられた小さな孔１１ｂとを有する平板部１１ｃと、この平板部１１ｃの両側部から対向して折り曲げられた一対の腕部１１ｄと、この腕部１１ｄの中央部に設けられた矩形状の孔１１ｅと、腕部１１ｄの端部から折り曲げられた取付部１１ｆとを有する。
【００３９】
そして、このような取付板１１は、図４２〜図４４に示すように、エンコーダ本体部Ｅ１の係合部材１０側に位置させて、先ず、小さい孔１１ｂに第１実施例の絶縁基台１の凸部２ｂを挿入する。
しかる後、腕部１１ｄを係合部材１０の側板１０ｄ上で押し込み、孔１１ｅに切り起こし部１０ｅが位置して、腕部１１ｄが切り起こし部１０ｅに掛け止めされ、これによって、取付板１１が係合部材１０にスナップ止めされて、取付板１１が係合部材１０に取り付けられる。
【００４０】
また、取付板１１が取り付けられた時、図４３に示すように、平板部１１ｃが係合部材１０の板状の基部１０ａの外側に重ね合わされた状態になると共に、腕部１１ｄが回転体８に対して左右の横方向の位置で、係合部材１０の側板１０ｄに取り付けられ、また、回転体８の回転軸方向に延びる腕部１１ｄの端部から折り曲げられた取付部１１ｆの下面は、絶縁基台１の一端、即ち、側壁部３とほぼ同一の位置において、平行な状態で位置している。
【００４１】
そして、取付板１１を取り付けたエンコーダ本体部Ｅ１は、図４３に示すように、側壁部３側をプリント基板Ｐ１に載置する。
この時、突起３ｇがプリント基板Ｐ１の孔１３に挿入されて、エンコーダ本体部Ｅ１が位置決めされると共に、接触片６，共通接触片７の端子部６ｂ、７ｂ、及び取付板１１の取付部１１ｆがプリント基板Ｐ１の上面に形成された配線パターン（図示せず）上に位置した状態となる。
【００４２】
そして、このように構成された接触片６，共通接触片７，及び取付板１１は、クリーム半田により配線パターンに面実装されて、プリント基板Ｐ１に取り付けられ、これによって、エンコーダ本体部Ｅ１は、回転体８の回転軸方向と直交した状態でプリント基板Ｐ１に取り付けられて、エンコーダ本体部Ｅ１は伏せ型による取付状態となっている。
【００４３】
また、このような構成を有する回転型エンコーダの操作を説明すると、先ず、取付板１１の孔１１ａと係合部材１０を貫通して回転体８の孔８ｆに操作部材（図示せず）を係合、或いはプリント基板Ｐ１の孔（図示せず）を貫通して回転体８の孔８ｆに操作部材を係合させた後、操作部材を回転すると、回転体８とコード部材９が軸部８ａを支持部として回転する。
そして、回転体８は、凹凸部８ｄが係合部１０ｂと係脱動作を行って、クリック動作を行うと共に、舌片９ｂが接触片６と接離し、且つ、共通接触片７が板状部９ａに常時接触して、接触片６と共通接触片７との間で、２相のパルス信号を発生すようになる。
【００４４】
また、図４５〜図５０は、取付板の第２実施例を示し、この第２実施例における取付板１２は、半田付け可能な金属板からなり、中央部に設けられた円形の大きな孔１２ａと下部に設けられた小さな孔１２ｂとを有する平板部１２ｃと、この平板部１２ｃの両側部から対向して折り曲げられた一対の腕部１２ｄと、この腕部１２ｄの中央部に設けられた矩形状の孔１２ｅと、腕部１２ｄの側端部から折り曲げられた取付部１２ｆと、平板部１２ｃの取付部１２ｆ側に設けられた凸部１２ｇとを有する。
【００４５】
そして、このような取付板１２は、図４８〜図５０に示すように、前記実施例と同様にエンコーダ本体部Ｅ１の係合部材１０側に位置させて、先ず、小さい孔１２ｂに第２実施例の絶縁基台１の凸部２ｂを挿入する。
しかる後、腕部１２ｄを係合部材１０の側板１０ｄ上で押し込み、孔１２ｅに切り起こし部１０ｅが位置して、腕部１２ｄが切り起こし部１０ｅに掛け止めされ、これによって、取付板１２が係合部材１０にスナップ止めされて、取付板１２が係合部材１０に取り付けられる。
【００４６】
また、取付板１２が取り付けられた時、図４８〜図５０に示すように、平板部１２ｃが係合部材１０の板状の基部１０ａの外側に重ね合わされた状態になると共に、腕部１２ｄが回転体８に対して左右の横方向の位置で、係合部材１０の側板１０ｄに取り付けられ、また、回転体８の回転軸方向に延びる腕部１２ｄの側端部から折り曲げられた取付部１２ｆの下面は、絶縁基台１の下面から延びた接触片６と共通接触片７のＬ字状の端子部６ｂ、７ｂとほぼ同一の位置に位置している。
【００４７】
そして、取付板１２を取り付けたエンコーダ本体部Ｅ１は、図４９，図５０に示すように、主基台部２と副基台部５の下面側をプリント基板Ｐ１に対向させて、凸部１２ｇをプリント基板Ｐ１の孔１３に挿入して、エンコーダ本体部Ｅ１が位置決めされると共に、接触片６，共通接触片７の端子部６ｂ、７ｂ、及び取付板１２の取付部１２ｆがプリント基板Ｐ１の上面に形成された配線パターン（図示せず）上に位置した状態にする。
【００４８】
そして、このように構成された接触片６，共通接触片７，及び取付板１２は、クリーム半田により配線パターンに面実装されて、プリント基板Ｐ１に取り付けられ、これによって、エンコーダ本体部Ｅ１は、回転体８の回転軸方向と平行な状態でプリント基板Ｐ１に取り付けられて、エンコーダ本体部Ｅ１は立ち型による取付状態となっている。
【００４９】
また、このような構成を有する回転型エンコーダの操作を説明すると、先ず、取付板１２の孔１２ａと係合部材１０を貫通して回転体８の孔８ｆに操作部材（図示せず）を係合、或いは、これと反対側から回転体８の孔８ｆに操作部材を係合させた後、操作部材を回転すると、回転体８とコード部材９が軸部８ａを支持部として回転する。
そして、回転体８は、凹凸部８ｄが係合部１０ｂと係脱動作を行って、クリック動作を行うと共に、舌片９ｂが接触片６と接離し、且つ、共通接触片７が板状部９ａに常時接触して、接触片６と共通接触片７との間で、パルス信号を発生すようになる。
【００５０】
【発明の効果】
本発明の回転型エンコーダにおいて、回転体８の円周面には、コードパターン９ｂが設けられると共に、回転体８の端面８ｅには、コードパターン９ｂと導通するコモンパターン９ａが設けられため、コードパターン９ｂの長さを長くでき、また、従来に比して回転体８の回転軸方向の長さを小さくでき、小型の回転型エンコーダを提供できる。
【００５１】
また、回転体８の外円周面にコードパターン９ｂが設けられたため、コードパターン９ｂの長さを長くでき、更に、接触片６の配置に融通性があり、種々の形態に適応した回転型エンコーダを提供できる。
また、回転体８は円筒状をなし、回転体８の内円周面にコードパターン９ｂが設けられたため、接触片６の高さを小さくできて、小型の回転型エンコーダを提供できる。
【００５２】
また、複数個の接触片６は、回転体８の円周面を挟んで互いに反対側の位置に配置され、共通接触片７は、回転体８の端面８ｅに対向する位置に配置されたため、それらが互いに回転軸方向に並設することが無く、回転軸方向のスペースファクターが良く、小型の回転型エンコーダを提供できる。
【００５３】
また、接触片６と共通接触片７は、絶縁材からなる絶縁基台１に取り付けられ、接触片６と共通接触片７は、絶縁基台１を基準面として回転体方向に延びて設けられたため、それぞれの高さ方向の基準ができ、標準化に適した回転型エンコーダを提供できる。
【図面の簡単な説明】
【図１】本発明の回転型エンコーダの正面図。
【図２】本発明の回転型エンコーダの裏面図。
【図３】本発明の回転型エンコーダの上面図。
【図４】本発明の回転型エンコーダの下面図。
【図５】本発明の回転型エンコーダの分解斜視図。
【図６】本発明の回転型エンコーダの要部断面側面図。
【図７】本発明の回転型エンコーダの要部断面正面図。
【図８】本発明の回転型エンコーダに係り、絶縁基台と回転体とを組み合わせた斜視図。
【図９】本発明の回転型エンコーダに係る絶縁基台の第１実施例の正面図。
【図１０】本発明の回転型エンコーダに係る絶縁基台の第１実施例の側面図。
【図１１】本発明の回転型エンコーダに係る絶縁基台の第１実施例の下面図。
【図１２】本発明の回転型エンコーダに係り、第１実施例の絶縁基台と接触片との関係を示す説明図。
【図１３】本発明の回転型エンコーダに係る絶縁基台の製造方法を示す説明図。
【図１４】本発明の回転型エンコーダに係る絶縁基台の第２実施例の正面図。
【図１５】本発明の回転型エンコーダに係る絶縁基台の第２実施例の側面図。
【図１６】本発明の回転型エンコーダに係る絶縁基台の第２実施例の下面図。
【図１７】本発明の回転型エンコーダに係り、第２実施例の絶縁基台と接触片との関係を示す説明図。
【図１８】本発明の回転型エンコーダに係る回転体の第１実施例の正面図。
【図１９】本発明の回転型エンコーダに係る回転体の第１実施例の側面図。
【図２０】本発明の回転型エンコーダに係る回転体の第１実施例の裏面図。
【図２１】本発明の回転型エンコーダに係る回転体の第１実施例の断面側面図。
【図２２】本発明の回転型エンコーダに係り、第１実施例の回転体とコード部材の製造方法を示す説明図。
【図２３】本発明の回転型エンコーダに係り、第１実施例の回転体とコード部材の製造方法を示す説明図。
【図２４】図２３の２４−２４線における断面図。
【図２５】本発明の回転型エンコーダに係り、第１実施例の回転体とコード部材の製造方法を示す説明図。
【図２６】本発明の回転型エンコーダに係るコード部材の斜視図。
【図２７】本発明の回転型エンコーダに係る回転体の第２実施例の正面図。
【図２８】本発明の回転型エンコーダに係る回転体の第２実施例の側面図。
【図２９】本発明の回転型エンコーダに係る回転体の第２実施例の裏面図。
【図３０】本発明の回転型エンコーダに係る回転体の第２実施例の断面側面図。
【図３１】本発明の回転型エンコーダに係り、第２実施例の回転体とコード部材の取付方法を示す斜視図。
【図３２】本発明の回転型エンコーダに係り、第２実施例の回転体とコード部材が組み合わされた状態を示す正面図。
【図３３】本発明の回転型エンコーダに係り、第２実施例の回転体とコード部材が組み合わされた状態を示す側面図。
【図３４】本発明の回転型エンコーダに係る係合部材の正面図。
【図３５】本発明の回転型エンコーダに係る係合部材の上面図。
【図３６】本発明の回転型エンコーダに係る係合部材の下面図。
【図３７】図３５の３７−３７線における断面図。
【図３８】本発明の回転型エンコーダに係る取付板の第１実施例の斜視図。
【図３９】本発明の回転型エンコーダに係る取付板の第１実施例の正面図。
【図４０】本発明の回転型エンコーダに係る取付板の第１実施例の側面図。
【図４１】本発明の回転型エンコーダに係る取付板の第１実施例の下面図。
【図４２】本発明の回転型エンコーダに係り、第１実施例の取付板をエンコーダ本体部に取り付けた状態を示す斜視図。
【図４３】本発明の回転型エンコーダに係り、第１実施例の取付板をエンコーダ本体部に取り付けた状態を示す要部断面図。
【図４４】本発明の回転型エンコーダに係り、第１実施例の取付板のエンコーダ本体部への取り付けを示す斜視図。
【図４５】本発明の回転型エンコーダに係る取付板の第２実施例の正面図。
【図４６】本発明の回転型エンコーダに係る取付板の第２実施例の側面図。
【図４７】本発明の回転型エンコーダに係る取付板の第２実施例の裏面図。
【図４８】本発明の回転型エンコーダに係り、第２実施例の取付板をエンコーダ本体部に取り付けた状態を示す斜視図。
【図４９】本発明の回転型エンコーダに係り、第２実施例の取付板をエンコーダ本体部に取り付けた状態を示す裏面図。
【図５０】本発明の回転型エンコーダに係り、第２実施例の取付板をエンコーダ本体部に取り付けた状態を示す側面図。
【図５１】従来の回転型エンコーダの斜視図。
【図５２】従来の回転型エンコーダの分解斜視図。
【図５３】従来の回転型エンコーダに係り、接触片の回転体への弾圧状態を示す断面図。
【図５４】従来の回転型エンコーダに係り、弾性板の回転体への弾圧状態を示す断面図。
【図５５】従来の回転型エンコーダに係る回転体の斜視図。
【符号の説明】
１絶縁基台
２主基台部
２ａ凹部
２ｂ凸部
２ｃ掛け止め部
３側壁部
３ａ鍔部
３ｂ孔
３ｃ逃げ部
３ｄ上壁部
３ｅ溝部
３ｆ掛け止め部
３ｇ突起
４薄肉部
５副基台部
５ａ凸部
５ｂ凸条部
６接触片
６ａ接触部
６ｂ端子部
７共通接触片
７ａ接触部
７ｂ端子部
８回転体
８ａ軸部
８ｂ保持部
８ｃ端面
８ｄ凹凸部
８ｅ端面
８ｆ孔
８ｇ係止部
８ｈ溝部
９コード部材
９ａ板状部（コモンパターン）
９ｂ舌片（コードパターン）
１０係合部材
１０ａ基部
１０ｂ係合部
１０ｃ孔
１０ｄ側板
１０ｅ切り起こし部
１０ｆ係止部
１０ｇ上辺板
１０ｈ孔
１０ｊ下辺板
１１取付板
１１ａ孔
１１ｂ孔
１１ｃ平板部
１１ｄ腕部
１１ｅ孔
１１ｆ取付部
１２取付板
１２ａ孔
１２ｂ孔
１２ｃ平板部
１２ｄ腕部
１２ｅ孔
１２ｆ取付部
１２ｇ凸部
１３孔
Ｅ１エンコーダ本体部
Ｐ１プリント基板
２１金属板
２１ａ上部桟部
２１ｂ下部桟部
２１ｃループ状部
２１ｄ連結部
２１ｅ連結部
２１ｆ連結部
２１ｇ接続片
２１ｈ連結部
２２孔
２３線
２５金属板
２６孔
２７孔
２８金型
２９金型
３０空洞部
３１線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary encoder used for a computer terminal device, a portable communication device, an acoustic device, and the like.
[0002]
[Prior art]
The configuration of a conventional rotary encoder will be described with reference to FIGS. 51 to 55. An insulating base 51 made of a synthetic resin molded product includes a substrate portion 51b having a hole 51a in the center and both ends of the substrate portion 51b. A pair of arm portions 51c extending in a right-angle state from the first portion, and a support portion 51d that is provided at an end portion of the arm portion 51c and includes a hole that is partially cut away.
The contact piece 52 and the common contact piece 53 made of a metal plate have contact portions 52a and 53a and terminal portions 52b and 53b. The contact piece 52 and the common contact piece 53 are arranged in parallel with each other in the substrate portion 51b. The contact portions 52a and 53a are located in the holes 51a, and the terminal portions 52b and 53b protrude outward from the substrate portion 51b.
[0003]
An elastic plate 54 made of a metal plate is attached to the substrate portion 51 b in a state where the elastic plate 54 is juxtaposed with the contact piece 52 and the common contact piece 53.
The cylindrical rotating body 55 includes a cylindrical portion 56 made of a synthetic resin molded product and a cord member 57 made of a conductive material provided on the outer circumferential surface of the cylindrical portion 56.
Further, the cord member 57 is formed by molding twice with a conductive resin. On the outer circumferential surface of the cylindrical portion 56, a common pattern 57a, a comb-like cord pattern 57b, and a click-use cord pattern 57 are provided. The uneven portion 56a is formed, and the common pattern 57a, the code pattern 57b, and the uneven portion 56a are arranged in parallel in the rotation axis direction.
Further, shaft portions 56b are provided on both end surfaces of the cylindrical portion 56, and a non-circular hole 56c is formed in the center portion.
[0004]
The rotating body 55 is rotatably attached to the insulating base 51 with the shaft portion 56b snapped to the support portions 51d of the pair of arm portions 51c, and when the rotating body 55 is attached, the common pattern 57a. The contact portion 53a of the common contact piece 53 contacts, the contact portion 52a of the contact piece 52 contacts the code pattern 57b, and the elastic plate 54 elastically contacts the uneven portion 56a.
Further, the encoder main body E <b> 2 is configured by attaching the dome-shaped cover 58 to the insulating base 51 so as to cover the rotating body 55.
As shown in FIG. 53, such an encoder main body E2 places the lower surface of the insulating base 51 on the printed circuit board P2 and prints the terminal portions 52b and 53b of the contact piece 52 and the common contact piece 53. The encoder body E2 is attached to the printed circuit board P2 by being inserted into the hole of the board P2 and soldering the terminal parts 52b and 53b to a wiring pattern (not shown).
[0005]
The operation of the rotary encoder having such a configuration will be described. First, when a drive shaft (not shown) is inserted into the hole 56c of the rotating body 55, the drive shaft is externally applied. When rotating, the rotating body 55 rotates.
Then, the code member 57 also rotates so that the common contact piece 53 is always in contact with the common pattern 57 a and the contact piece 52 is in contact with and separated from the code pattern 57 b, so that a pulse is generated between the common contact piece 53 and the contact piece 52. A signal is generated.
Further, the elastic plate 54 is engaged with and disengaged from the concavo-convex portion 56a by the concavo-convex portion 56a accompanying the rotation of the rotator 55, so that the rotator 55 performs a click operation.
In this way, the operation of the rotary encoder is performed.
[0006]
[Problems to be solved by the invention]
In the conventional rotary encoder, since the common pattern 57a and the code pattern 57b are arranged in parallel on the outer circumferential surface of the rolling element 55 in the direction of the rotation axis, there is a problem that the size becomes large in the direction of the rotation axis. .
[0007]
Therefore, the present invention provides an inexpensive and small rotary encoder.
[0008]
[Means for Solving the Problems]
As a first solving means for solving the above problems, a rotatable columnar, cylindrical, or truncated cone-shaped rotating body made of an insulating material, and a code pattern provided on the outer surface of the rotating body, A plurality of contact pieces in contact with the code pattern, the circumferential surface of the rotating body is provided with the code pattern, and the end surface of the rotating body orthogonal to the rotational axis direction of the rotating body , common pattern is provided for conducting said code pattern, Rutotomoni contacting the common contact piece in this common pattern, the plurality of the contact pieces, positioned opposite each other across the circumferential surface of the rotary body The common contact piece is arranged at a position facing the end face of the rotating body .
[0009]
As a second solution, the code pattern is provided on the outer circumferential surface of the rotating body.
As a third solution, the rotating body has a cylindrical shape, and the code pattern is provided on the inner circumferential surface of the rotating body.
[0010]
As a fourth solution, the contact piece and the common contact piece are attached to an insulating base made of an insulating material, and the contact piece and the common contact piece are rotated with the insulating base as a reference plane. It was set as the structure extended and provided in the body direction .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The rotary encoder of the present invention will be described with reference to FIGS. 1 to 50. FIG. 1 is a front view of the rotary encoder of the present invention, FIG. 2 is a rear view of the rotary encoder of the present invention, and FIG. 4 is a top view of the rotary encoder, FIG. 4 is a bottom view of the rotary encoder of the present invention, FIG. 5 is an exploded perspective view of the rotary encoder of the present invention, and FIG. 6 is a cross-sectional side view of an essential part of the rotary encoder of the present invention. FIG. 7 is a cross-sectional front view of an essential part of the rotary encoder of the present invention, and FIG. 8 is a perspective view of the rotary encoder of the present invention, combining an insulating base and a rotating body.
[0012]
9 is a front view of the first embodiment of the insulating base according to the rotary encoder of the present invention, FIG. 10 is a side view of the first embodiment of the insulating base according to the rotary encoder of the present invention, FIG. FIG. 12 is a bottom view of the first embodiment of the insulating base according to the rotary encoder of the present invention, and FIG. 12 relates to the rotary encoder of the present invention, and shows the relationship between the insulating base and the contact piece of the first embodiment. FIG. 13 and FIG. 13 are explanatory views showing a method for manufacturing an insulating base according to the rotary encoder of the present invention.
[0013]
14 is a front view of the second embodiment of the insulating base according to the rotary encoder of the present invention, FIG. 15 is a side view of the second embodiment of the insulating base according to the rotary encoder of the present invention, FIG. FIG. 17 is a bottom view of the second embodiment of the insulating base according to the rotary encoder of the present invention, and FIG. 17 relates to the rotary encoder of the present invention, and shows the relationship between the insulating base and the contact piece of the second embodiment. FIG.
[0014]
FIG. 18 is a front view of the first embodiment of the rotating body according to the rotary encoder of the present invention, FIG. 19 is a side view of the first embodiment of the rotating body according to the rotary encoder of the present invention, and FIG. FIG. 21 is a cross-sectional side view of the first embodiment of the rotating body according to the present invention, and FIGS. 22 to 25 show the present invention. FIG. 26 is a perspective view of a code member according to the rotary encoder of the present invention, and FIG. 26 is an explanatory view showing a method of manufacturing the rotary body and the code member according to the first embodiment.
[0015]
FIG. 27 is a front view of a second embodiment of the rotating body according to the rotary encoder of the present invention, FIG. 28 is a side view of the second embodiment of the rotating body according to the rotary encoder of the present invention, and FIG. FIG. 30 is a cross-sectional side view of a second embodiment of a rotating body according to the present invention, and FIG. 31 is a rotary encoder according to the present invention. FIG. 32 is a perspective view showing a method of attaching the rotating body and the code member according to the second embodiment, and FIG. 32 relates to the rotary encoder of the present invention and shows a state where the rotating body and the code member according to the second embodiment are combined. FIG. 33 is a front view of a rotary encoder according to the present invention, and is a side view showing a state in which the rotating body and cord member of the second embodiment are combined.
[0016]
FIG. 34 is a front view of the engaging member according to the rotary encoder of the present invention, FIG. 35 is a top view of the engaging member according to the rotary encoder of the present invention, and FIG. FIG. 37 is a sectional view taken along the line 37-37 in FIG.
[0017]
38 is a perspective view of the first embodiment of the mounting plate according to the rotary encoder of the present invention, FIG. 39 is a front view of the first embodiment of the mounting plate according to the rotary encoder of the present invention, and FIG. FIG. 41 is a bottom view of the first embodiment of the mounting plate according to the rotary encoder of the present invention, and FIG. 42 is the bottom view of the rotary encoder of the present invention. FIG. 43 is a perspective view showing a state where the mounting plate of the first embodiment is attached to the encoder body, FIG. 43 is related to the rotary encoder of the present invention, and shows a state where the mounting plate of the first embodiment is attached to the encoder body. FIG. 44 is a perspective view showing attachment of the attachment plate of the first embodiment to the encoder main body according to the rotary encoder of the present invention.
[0018]
45 is a front view of a second embodiment of the mounting plate according to the rotary encoder of the present invention, FIG. 46 is a side view of the second embodiment of the mounting plate according to the rotary encoder of the present invention, and FIG. 48 is a rear view of the second embodiment of the mounting plate according to the rotary encoder of the present invention, FIG. 48 relates to the rotary encoder of the present invention, and is a perspective view showing a state in which the mounting plate of the second embodiment is mounted on the encoder body. FIG. 49 relates to the rotary encoder of the present invention, and FIG. 50 is a rear view showing a state in which the mounting plate of the second embodiment is mounted on the encoder main body, and FIG. 50 relates to the rotary encoder of the present invention. It is a side view which shows the state which attached the board to the encoder main-body part.
[0019]
Next, the structure of the rotary encoder according to the present invention will be described with reference to FIGS. 1 to 50. As shown in FIGS. 1 to 11, the insulating base 1 of the first embodiment made of a molded product of an insulating material is used. The rectangular main base 2, the side wall 3 provided upright at right angles from the main base 2, and a pair of sub-bases connected by thin portions 4 from both sides of the main base 2 It is comprised with the base part 5. FIG.
The main base portion 2 has a pair of concave portions 2a provided on both end surfaces thereof, a columnar convex portion 2b provided in the center portion of the front end surface, and a tapered portion provided on the lower surface. And a latching portion 2c.
[0020]
The side wall 3 is provided upright from the corner of the upper surface of the main base 2, and the side wall 3 includes a circular hole 3b having a flange 3a provided at the center thereof, A pair of escape holes 3c provided from both sides of the hole 3b to the main base part 2, a pair of upper wall parts 3d extending in a direction perpendicular to the upper part, and a groove part 3e provided between the pair of upper wall parts 3d, And a latching portion 3f having a step provided on the upper surface of the pair of upper wall portions 3d, and a protrusion 3g.
Further, the pair of sub-base portions 5 includes a convex portion 5a having a rounded tip and provided on the end surface, and a small convex portion 5b (see FIG. 11) provided on the lower surface of the convex portion 5a.
[0021]
Then, the insulating base 1 is formed by bending the thin portion 4 from the state shown in FIG. 5 and press-fitting the convex portion 5a of the sub base portion 5 into the concave portion 2a of the main base portion 2. As shown, a rectangular insulating base 1 is formed.
At this time, the ridge 5b provided on the sub-base part 5 facilitates the press-fitting of the sub-base part 5 into the concave part 2a and ensures it.
[0022]
The plurality of contact pieces 6 of the first embodiment made of a metal plate have a contact portion 6a and a terminal portion 6b. Each of the plurality of contact pieces 6 is embedded in the sub-base portion 5 and attached. The contact portion 6a protrudes upward from the upper surface of the insulating base 1, the terminal portion 6b protrudes downward from the lower surface of the insulating base 1, and the flat surface of the tip portion is one end of the insulating base 1, that is, It is bent so as to be positioned in a parallel state at substantially the same position as the side wall portion 3.
[0023]
The common contact piece 7 of the first embodiment made of metal has a pair of contact portions 7a and a terminal portion 7b. The common contact piece 7 is located at the position of the main base portion 2 close to the side wall portion 3 side. The contact portion 7a protrudes upward from the upper surface of the insulating base 1 and is located in the escape hole 3c of the side wall portion 3, and the terminal portion 7b protrudes downward from the lower surface of the insulating base 1, The tip flat surface is bent so as to be positioned in a parallel state at one end of the insulating base 1, that is, at substantially the same position as the side wall 3.
As a result, it becomes an obscure attachment state that can be attached on the side wall 3 surface.
[0024]
Further, in this embodiment, a part of the plurality of contact pieces 6 is embedded across the main base portion 2 and the sub base portion 5, and the main piece described above is a part of the contact piece 5. A thin portion 4 that connects the base portion 2 and the sub base portion 5 is formed.
The thin-walled portion 4 may be formed by embedding a plate-like metal member different from the contact piece 6 in the insulating base 1 to form the thin-walled portion 4 with this metal member. The thin part 4 that connects the sub base part 5 and the sub base part 5 may be formed by the thin part 4 made of an insulating material that constitutes the insulating base 1.
[0025]
Next, a method of manufacturing the insulating base 1, the contact piece 6, and the common contact piece 7 will be described with reference to FIG. 13. First, a plurality of holes 22 are provided in a metal plate 21 made of a hoop material. Thus, an upper beam portion 21a and a lower beam portion 21b are formed.
Further, by forming the hole 22, the hole 22 in the center of the metal plate 21 is provided with a loop-shaped part 21 c for forming the contact part 7 a of the common contact piece 7, and a part of the loop-shaped part 21 c Is in a state where the terminal portion 7b of the common contact piece 7 is connected to the lower crosspiece portion 21b by the connecting portion 21d.
[0026]
Further, on both sides of the loop-shaped portion 21c and the connecting portion 21d, the contact portion 6a of the contact piece 6 is connected to the upper crosspiece portion 21a by the connecting portion 21e, and the terminal portion 6b of the contact piece 6 is connected to the connecting portion 21f. While being connected to the lower crosspiece 21b, the contact portion 6a and the terminal portion 6b are connected by the connection piece 21g, the connection piece 21g becomes the thin portion 4, and the lower part of the contact piece 6a is connected to the contact piece 6a. In order to ensure the holding at the time of molding, the connecting portion 21h is connected to the lower crosspiece portion 21b.
[0027]
And the metal plate 21 comprised in this way is clamped by a shaping die (not shown), and when resin is injected into the forming die, as shown by a two-dot chain line in FIG. When the main base part 2, the side wall part 3, and the sub base part 5 are formed and then cut at the position of the line 23, the contact piece 6 and the common contact piece 7 are separated from the metal plate 21, and the common contact piece 7 is separated from the loop-shaped portion 21c to form a pair of cantilevered contact portions 7a. As a result, the insulating base 1 as shown in FIG. 9 is manufactured.
[0028]
14 to 17 show a second embodiment of the insulating base 1, the contact piece 6, and the common contact piece 7. In this embodiment, the first embodiment is different from the first embodiment. Since only the shapes of the terminal portions 6b and 7b of the common contact piece 7 are different, the other configurations and the manufacturing method are the same as those in the first embodiment. To do.
That is, in the second embodiment, the terminal portions 6b and 7b protrude from the lower surface side of the insulating base 1, and the tip portions are bent in an L shape.
[0029]
The cylindrical rotating body 8 of the first embodiment is formed of an insulating material, and as shown in FIGS. 18 to 21 in particular, is connected to a shaft portion 8a provided on one end side and the shaft portion 8a. A holding portion 8b formed and having a diameter larger than that of the shaft portion 8a, an uneven portion 8d for click provided on an end surface 8c orthogonal to the rotation axis direction on one side of the holding portion 8b, the shaft portion 8a and the holding portion 8b, an end face 8e orthogonal to the rotation axis direction on the other side of the holding portion 8b, a hexagonal non-circular hole 8f provided in the center, and an outer peripheral end of the shaft portion 8a And a locking portion 8g provided in the portion.
[0030]
As shown in FIG. 26, the cord member 9 of the first embodiment made of a metal plate is bent from the ring-shaped plate-like portion 9a forming the common pattern and the inner peripheral portion of the plate-like portion 9a. And a plurality of tongue pieces 9b forming a pattern.
The cord member 9 is embedded and attached to the rotating body 8, the ring-shaped plate-like portion 9a forming the common pattern is positioned on the end surface 8e, and the tongue piece 9b forming the code pattern is the holding portion 8b. It is in a state of being exposed on the outer circumferential surface.
[0031]
A method of manufacturing the rotating body 8 and the cord member 9 will be described with reference to FIGS. 22 to 26. As shown in FIG. 22, a comb-like hole is formed at the center of the hoop-shaped metal plate 25. 26 is provided to form the tongue piece 9b.
The tip of the tongue piece 9b has a chamfered shape so that the length can be set longer.
Next, as shown in FIGS. 23 and 24, a hole 27 is provided at a cross-shaped position to form a crosspiece 25a, and a plate-like portion 9a connected to the crosspiece 25a by a connecting portion 25b is formed. In addition, the tongue piece 9b is bent from the plate-like portion 9a.
Next, as shown in FIG. 25, the two molds 28, 29 are sandwiched between the two molds 28, 29, and the tongue piece 9 b is held by the groove 29 a of the mold 29. When the resin is injected into the hollow portion 30, the rotating body 8 is formed, and then, as shown in FIG. 23, when cut at the position of the line 31, the cord member 9 as shown in FIG. 26 is embedded in the rotating body 8. Thus, the manufacture of the rotating body 8 and the cord member 9 is completed.
In the process shown in FIG. 25, the dimension of the groove 29a of the mold 29 is set slightly smaller than the dimension of the tongue piece 9b, and the entrance of the groove 29a is formed in a taper shape. 9b is accommodated in the groove 29a without a gap, and resin is injected in this state, so that no resin film is formed on the outer surface of the tongue piece 9b.
Further, the mold 29 forms a part of the concave portion of the click uneven portion 8d at a place where the tongue piece 9b is pressed.
[0032]
27 to 33 show a second embodiment of the rotating body 8 and the cord member 9, and in this embodiment, the cord member 9 is fitted and attached to the rotating body 8.
In addition to the configuration of the first embodiment, the rotating body 8 is provided with a plurality of grooves 8h in the rotation axis direction on the outer circumferential surface of the holding portion 8b. Since it is the same as that of an Example, the same number is attached | subjected to the same component and the description is abbreviate | omitted here.
Further, as shown in FIG. 31, the cord member 9 is preliminarily formed with a ring-shaped plate-like portion 9a that forms a common pattern, and a tongue piece 9b that is bent from the plate-like portion 9a to form a code pattern. It has become.
[0033]
Then, as shown in FIG. 31, with the cord member 9 positioned on the end surface 8e side of the rotating body 8, the chamfered portion at the tip of the tongue piece 9b is used as a guide, and the tongue piece 9b is pressed into the groove portion 8h. When inserted, as shown in FIGS. 32 and 33, the cord member 9 is in a state where the plate member 9a is positioned on the end surface 8e and the tongue piece 9b is exposed on the outer circumferential surface of the holding portion 8b. It will be in the state attached to.
[0034]
The rotating body 8 and the cord member 9 having the configuration as in the first and second embodiments are rotatably held by inserting the shaft portion 8a of the rotating body 8 into the hole 3b of the side wall portion 3.
When the rotating body 8 is attached to the insulating base 1, the locking portion 8 g is extracted from the hole 3 b to prevent the rotating body 8 from being removed, and the pair of contact portions 7 a of the common contact piece 7 are end surfaces. It will be in the state which faced 8e, and will be in the state which contacted the plate-shaped part 9a which is a common pattern of the cord member 9. FIG.
When the rotating body 8 is attached to the insulating base 1, the plurality of contact pieces 6 are arranged at positions opposite to each other across the circumferential surface of the rotating body 8. As shown in FIGS. 12 and 17, the contact portion 6a extending from the insulating base 1 is a rotating body. Repression is performed at a position beyond the center of rotation.
The pair of contact portions 6a are in contact with the code pattern with a phase difference.
[0035]
In addition, although the said rotary body 8 demonstrated the cylindrical thing, it may be a column shape or a truncated cone shape.
Further, since the tongue member 9b is bent from the inner peripheral portion of the plate-like portion 9a, the cord member 9 can be arranged at any position on the outer periphery of the connecting portion 25, and even if the interval between the tongue pieces 9b is narrowed, the hoop Although continuous processing with a material is possible, the tongue piece 9b may be bent from the outer peripheral portion of the plate-like portion 9a.
Furthermore, although the tongue piece 9b of the cord member 9 has been described as being provided on the outer circumferential surface of the cylindrical rotating body 8, the tongue piece 9b is provided on the inner circumferential surface of the cylindrical rotating body 8. But it ’s okay.
Furthermore, although the code member 9 has been described as using a metal plate, a code pattern or a common pattern may be formed by a ground metal material, conductive powder, plating, or the like.
[0036]
As shown in FIGS. 34 to 37, the engaging member 10 made of a metal plate is cut and bent into a C-shape at the center portion of the rectangular plate-like base portion 10a and the base portion 10a, and has a convex portion at the tip portion. An engaging portion 10b, a circular hole 10c provided in the lower portion of the base portion 10a, a pair of side plates 10d bent from both side portions of the base portion 10a, and a cut-and-raised portion 10e provided in the side plate 10d, A T-shaped upper side plate 10g bent from the upper side of the base portion 10a and having a locking portion 10f at the tip portion, and a C-shaped lower side plate 10j bent from the lower side of the base portion 10a and having a rectangular hole 10h at the center portion. And have.
[0037]
And this engaging member 10 inserts the convex part 2b into the hole 10c according to the insulation base 1 so that the engaging part 10b may face the end surface 8c of the rotary body 8 which provided the uneven | corrugated | grooved part 8d.
Thereafter, the upper side plate 10g is positioned on the upper wall portion 3d and pushed in, the locking portion 10f is hooked on the hooking portion 3f, the upper side plate 10g is positioned on the groove portion 3e, and the upper side portion 10g is placed on the side wall portion. 3 is attached.
Simultaneously with the mounting of the upper side plate 10g, the lower side plate 10j is positioned and pushed into the lower surface of the main base 2, and the latching portion 2c is positioned in the hole 10h, so that the lower side plate 10j is hooked on the latching portion 2c. The lower side plate 10j is attached to the main base portion 2 by being stopped.
In this manner, the engaging member 10 is attached to the rotating body 8 at the upper and lower positions, and the side plate 10d is disposed at the left and right positions with respect to the rotating body 8. Yes.
Further, when the engaging member 10 is attached, the convex portion of the engaging portion 10b engages with the concave and convex portion 8d in a state where the convex portion and the concave and convex portion 8d provided on the end surface 8c of the rotating body 8 are detachable. Configures the click mechanism.
Furthermore, the engaging member 8, the contact piece 6, and the common contact piece 7 are in a state of extending in the direction of the rotating body 8 with the insulating base 1 as a reference surface.
[0038]
And the encoder main-body part E1 is formed by such a structure.
Further, as shown in FIGS. 38 to 44, the mounting plate 11 of the first embodiment made of a solderable metal plate has a large circular hole 11a provided in the central portion and a small hole 11b provided in the lower portion. A flat plate portion 11c having a pair of arms 11d bent from opposite sides of the flat plate portion 11c, a rectangular hole 11e provided at the center of the arm portion 11d, and an arm portion 11d. And an attachment portion 11f bent from the end of the.
[0039]
Then, as shown in FIGS. 42 to 44, such a mounting plate 11 is positioned on the engaging member 10 side of the encoder main body E1, and first, the insulating base 1 of the first embodiment is formed in the small hole 11b. The convex portion 2b is inserted.
Thereafter, the arm portion 11d is pushed onto the side plate 10d of the engaging member 10, the cut-and-raised portion 10e is positioned in the hole 11e, and the arm portion 11d is hooked on the cut-and-raised portion 10e. The attachment plate 11 is attached to the engagement member 10 by being snapped to the engagement member 10.
[0040]
When the attachment plate 11 is attached, as shown in FIG. 43, the flat plate portion 11c is overlaid on the outer side of the plate-like base portion 10a of the engaging member 10, and the arm portion 11d is rotated by the rotating body 8. The lower surface of the attachment portion 11f, which is attached to the side plate 10d of the engagement member 10 at a lateral position on the left and right sides and bent from the end of the arm portion 11d extending in the rotation axis direction of the rotating body 8, At one end of the insulating base 1, that is, at substantially the same position as the side wall portion 3, the insulating base 1 is positioned in a parallel state.
[0041]
Then, as shown in FIG. 43, the encoder main body E1 to which the attachment plate 11 is attached places the side wall 3 side on the printed board P1.
At this time, the protrusion 3g is inserted into the hole 13 of the printed circuit board P1 to position the encoder body E1, and the contact piece 6, the terminal portions 6b and 7b of the common contact piece 7, and the attachment portion 11f of the attachment plate 11 are provided. Is located on a wiring pattern (not shown) formed on the upper surface of the printed circuit board P1.
[0042]
The contact piece 6, the common contact piece 7 and the mounting plate 11 thus configured are surface-mounted on the wiring pattern by cream solder and attached to the printed circuit board P1, whereby the encoder body E1 is The encoder main body E1 is attached to the printed circuit board P1 in a state orthogonal to the rotational axis direction of the rotary body 8, and the encoder main body E1 is attached to the bottom.
[0043]
The operation of the rotary encoder having such a configuration will be described. First, an operating member (not shown) is engaged with the hole 8f of the rotating body 8 through the hole 11a of the mounting plate 11 and the engaging member 10. If the operation member is rotated after the operation member is engaged with the hole 8f of the rotating body 8 through the hole (not shown) of the printed circuit board P1, the rotating body 8 and the code member 9 are connected to the shaft portion 8a. As a support.
In the rotating body 8, the concave and convex portion 8d engages and disengages with the engaging portion 10b, performs a click operation, the tongue piece 9b contacts and separates from the contact piece 6, and the common contact piece 7 includes the plate-like portion. The two-phase pulse signal is generated between the contact piece 6 and the common contact piece 7 constantly in contact with 9a.
[0044]
45 to 50 show a second embodiment of the mounting plate, and the mounting plate 12 in this second embodiment is made of a solderable metal plate and has a large circular hole 12a provided in the center portion. And a flat plate portion 12c having a small hole 12b provided in the lower portion, a pair of arm portions 12d bent from opposite sides of the flat plate portion 12c, and a rectangular portion provided in the central portion of the arm portion 12d. It has a shape hole 12e, a mounting portion 12f bent from the side end portion of the arm portion 12d, and a convex portion 12g provided on the mounting portion 12f side of the flat plate portion 12c.
[0045]
Then, as shown in FIGS. 48 to 50, such a mounting plate 12 is positioned on the side of the engaging member 10 of the encoder main body E1 in the same manner as in the above-described embodiment, and first, the second embodiment is provided in the small hole 12b. The convex part 2b of the example insulation base 1 is inserted.
Thereafter, the arm portion 12d is pushed onto the side plate 10d of the engaging member 10, the cut-and-raised portion 10e is positioned in the hole 12e, and the arm portion 12d is latched to the cut-and-raised portion 10e. The attachment plate 12 is attached to the engagement member 10 by being snapped to the engagement member 10.
[0046]
When the mounting plate 12 is attached, the flat plate portion 12c is overlaid on the outside of the plate-like base portion 10a of the engaging member 10 as shown in FIGS. An attachment portion 12f attached to the side plate 10d of the engaging member 10 at a lateral position on the left and right with respect to the rotating body 8 and bent from a side end portion of the arm portion 12d extending in the rotation axis direction of the rotating body 8. Is located at substantially the same position as the L-shaped terminal portions 6 b and 7 b of the contact piece 6 and the common contact piece 7 extending from the lower surface of the insulating base 1.
[0047]
As shown in FIGS. 49 and 50, the encoder main body E1 to which the mounting plate 12 is attached has a convex portion 12g with the lower surfaces of the main base portion 2 and the sub base portion 5 facing the printed circuit board P1. Is inserted into the hole 13 of the printed circuit board P1, and the encoder body E1 is positioned, and the terminal portions 6b and 7b of the contact piece 6, the common contact piece 7 and the mounting portion 12f of the mounting plate 12 are formed on the printed circuit board P1. It is set in a state positioned on a wiring pattern (not shown) formed on the upper surface.
[0048]
The contact piece 6, the common contact piece 7, and the mounting plate 12 thus configured are surface-mounted on the wiring pattern by cream solder and attached to the printed circuit board P1, whereby the encoder body E1 is The encoder body E1 is attached to the printed circuit board P1 in a state parallel to the rotation axis direction of the rotating body 8, and the encoder main body E1 is attached in a standing manner.
[0049]
The operation of the rotary encoder having such a configuration will be described. First, an operating member (not shown) is engaged with the hole 8f of the rotating body 8 through the hole 12a of the mounting plate 12 and the engaging member 10. Alternatively, when the operating member is rotated after engaging the operating member with the hole 8f of the rotating body 8 from the opposite side, the rotating body 8 and the cord member 9 rotate with the shaft portion 8a as the support portion.
In the rotating body 8, the concave and convex portion 8d engages and disengages with the engaging portion 10b, performs a click operation, the tongue piece 9b contacts and separates from the contact piece 6, and the common contact piece 7 includes the plate-like portion. A pulse signal is generated between the contact piece 6 and the common contact piece 7 in constant contact with 9a.
[0050]
【The invention's effect】
In the rotary encoder of the present invention, a code pattern 9b is provided on the circumferential surface of the rotating body 8, and a common pattern 9a that is electrically connected to the code pattern 9b is provided on the end surface 8e of the rotating body 8. The length of the pattern 9b can be increased, and the length of the rotating body 8 in the direction of the rotation axis can be reduced as compared with the prior art, thereby providing a small rotary encoder.
[0051]
In addition, since the code pattern 9b is provided on the outer circumferential surface of the rotating body 8, the length of the code pattern 9b can be increased, and the arrangement of the contact pieces 6 is flexible, and the rotary type is adapted to various forms. An encoder can be provided.
Moreover, since the rotary body 8 has a cylindrical shape and the code pattern 9b is provided on the inner circumferential surface of the rotary body 8, the height of the contact piece 6 can be reduced, and a small rotary encoder can be provided.
[0052]
Further, since the plurality of contact pieces 6 are arranged at positions opposite to each other across the circumferential surface of the rotating body 8, and the common contact piece 7 is arranged at a position facing the end face 8e of the rotating body 8, They are not juxtaposed in the direction of the rotation axis, and the space factor in the direction of the rotation axis is good, and a small rotary encoder can be provided.
[0053]
The contact piece 6 and the common contact piece 7 are attached to the insulating base 1 made of an insulating material, and the contact piece 6 and the common contact piece 7 are provided to extend in the direction of the rotating body with the insulating base 1 as a reference plane. Therefore, the reference of each height direction can be performed, and the rotary encoder suitable for standardization can be provided.
[Brief description of the drawings]
FIG. 1 is a front view of a rotary encoder according to the present invention.
FIG. 2 is a back view of the rotary encoder of the present invention.
FIG. 3 is a top view of the rotary encoder of the present invention.
FIG. 4 is a bottom view of the rotary encoder of the present invention.
FIG. 5 is an exploded perspective view of the rotary encoder of the present invention.
FIG. 6 is a cross-sectional side view of an essential part of the rotary encoder of the present invention.
FIG. 7 is a cross-sectional front view of an essential part of the rotary encoder of the present invention.
FIG. 8 is a perspective view of the rotary encoder according to the present invention in which an insulating base and a rotating body are combined.
FIG. 9 is a front view of a first embodiment of an insulating base according to the rotary encoder of the present invention.
FIG. 10 is a side view of the first embodiment of the insulating base according to the rotary encoder of the present invention.
FIG. 11 is a bottom view of the first embodiment of the insulating base according to the rotary encoder of the present invention.
FIG. 12 is an explanatory diagram showing the relationship between the insulating base and the contact piece according to the first embodiment, according to the rotary encoder of the present invention.
FIG. 13 is an explanatory view showing a method for manufacturing an insulating base according to the rotary encoder of the present invention.
FIG. 14 is a front view of a second embodiment of an insulating base according to the rotary encoder of the present invention.
FIG. 15 is a side view of a second embodiment of an insulating base according to the rotary encoder of the present invention.
FIG. 16 is a bottom view of the second embodiment of the insulating base according to the rotary encoder of the present invention.
FIG. 17 is an explanatory diagram illustrating a relationship between an insulating base and a contact piece according to a second embodiment of the rotary encoder according to the present invention.
FIG. 18 is a front view of a first embodiment of a rotating body according to the rotary encoder of the present invention.
FIG. 19 is a side view of the first embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 20 is a back view of the first embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 21 is a cross-sectional side view of the first embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 22 is an explanatory view showing a method of manufacturing the rotating body and the cord member of the first embodiment according to the rotary encoder of the present invention.
FIG. 23 is an explanatory view showing a rotating body and a cord member manufacturing method according to the first embodiment, according to the rotary encoder of the present invention.
24 is a cross-sectional view taken along line 24-24 in FIG.
FIG. 25 is an explanatory diagram showing a method of manufacturing the rotating body and the cord member of the first embodiment according to the rotary encoder of the present invention.
FIG. 26 is a perspective view of a cord member according to the rotary encoder of the present invention.
FIG. 27 is a front view of a second embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 28 is a side view of a second embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 29 is a rear view of a second embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 30 is a sectional side view of a second embodiment of the rotating body according to the rotary encoder of the present invention.
FIG. 31 is a perspective view showing a method of attaching the rotating body and the cord member of the second embodiment according to the rotary encoder of the present invention.
FIG. 32 is a front view showing a state in which the rotating body and the cord member of the second embodiment are combined according to the rotary encoder of the present invention.
FIG. 33 is a side view showing a state in which the rotating body and the cord member of the second embodiment are combined according to the rotary encoder of the present invention.
FIG. 34 is a front view of an engaging member according to the rotary encoder of the present invention.
FIG. 35 is a top view of an engaging member according to the rotary encoder of the present invention.
FIG. 36 is a bottom view of the engaging member according to the rotary encoder of the present invention.
37 is a sectional view taken along line 37-37 in FIG. 35. FIG.
FIG. 38 is a perspective view of a first embodiment of a mounting plate according to the rotary encoder of the present invention.
FIG. 39 is a front view of a first embodiment of a mounting plate according to the rotary encoder of the present invention.
FIG. 40 is a side view of the first embodiment of the mounting plate according to the rotary encoder of the present invention.
41 is a bottom view of the first embodiment of the mounting plate according to the rotary encoder of the present invention. FIG.
FIG. 42 is a perspective view showing a state in which the mounting plate of the first embodiment is mounted on the encoder main body according to the rotary encoder of the present invention.
FIG. 43 is a cross-sectional view of a principal part showing a state where the mounting plate of the first embodiment is attached to the encoder main body according to the rotary encoder of the present invention.
FIG. 44 is a perspective view showing attachment of the attachment plate of the first embodiment to the encoder main body according to the rotary encoder of the present invention.
FIG. 45 is a front view of a second embodiment of the mounting plate according to the rotary encoder of the present invention.
FIG. 46 is a side view of a second embodiment of the mounting plate according to the rotary encoder of the present invention.
47 is a rear view of a second embodiment of the mounting plate according to the rotary encoder of the present invention. FIG.
FIG. 48 is a perspective view showing a state in which the mounting plate of the second embodiment is mounted on the encoder main body according to the rotary encoder of the present invention.
FIG. 49 is a rear view showing a state in which the mounting plate of the second embodiment is mounted on the encoder main body according to the rotary encoder of the present invention.
FIG. 50 is a side view showing a state in which the mounting plate of the second embodiment is attached to the encoder body according to the rotary encoder of the present invention.
FIG. 51 is a perspective view of a conventional rotary encoder.
FIG. 52 is an exploded perspective view of a conventional rotary encoder.
FIG. 53 is a cross-sectional view showing a state in which a contact piece is pressed against a rotating body in a conventional rotary encoder.
FIG. 54 is a cross-sectional view showing a state in which an elastic plate is pressed against a rotating body, according to a conventional rotary encoder.
FIG. 55 is a perspective view of a rotating body according to a conventional rotary encoder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insulation base 2 Main base part 2a Recessed part 2b Protruding part 2c Latching part 3 Side wall part 3a Gutter part 3b Hole 3c Escape part 3d Upper wall part 3e Groove part 3f Latching part 3g Protrusion 4 Thin part 5 Sub base part 5a Convex part 5b Convex part 6 Contact piece 6a Contact part 6b Terminal part 7 Common contact piece 7a Contact part 7b Terminal part 8 Rotating body 8a Shaft part 8b Holding part 8c End face 8d Concavity and convexity part 8e End face 8f Hole 8g Locking part 8h Groove part 9 Cord member 9a Plate-shaped part (common pattern)
9b Tongue piece (code pattern)
10 engaging member 10a base 10b engaging portion 10c hole 10d side plate 10e cut and raised portion 10f locking portion 10g upper side plate 10h hole 10j lower side plate 11 attachment plate 11a hole 11b hole 11c flat plate portion 11d arm portion 11e hole 11f attachment portion 12 attachment Plate 12a Hole 12b Hole 12c Flat plate portion 12d Arm portion 12e Hole 12f Mounting portion 12g Projection portion 13 Hole E1 Encoder main body portion P1 Printed circuit board 21 Metal plate 21a Upper beam portion 21b Lower beam portion 21c Loop-shaped portion 21d Connection portion 21e Connection portion 21f Connecting portion 21g Connecting piece 21h Connecting portion 22 Hole 23 Wire 25 Metal plate 26 Hole 27 Hole 28 Mold 29 Mold 30 Cavity 31 Wire

Claims

A rotating columnar, cylindrical, or frustoconical rotating body made of an insulating material, a code pattern provided on the outer surface of the rotating body, and a plurality of contact pieces that contact the code pattern Provided, the circumferential surface of the rotating body is provided with the code pattern, and the end surface of the rotating body orthogonal to the rotation axis direction of the rotating body is provided with a common pattern that is electrically connected to the code pattern. Rutotomoni contacting the common contact piece to the common pattern, the plurality of the contact pieces, across the circumferential surface of the rotating body is disposed at a position opposite to each other, the common contactor is of the rotating body A rotary encoder arranged at a position facing the end face .

The rotary encoder according to claim 1, wherein the code pattern is provided on an outer circumferential surface of the rotating body.

The rotary encoder according to claim 1, wherein the rotary body has a cylindrical shape, and the code pattern is provided on an inner circumferential surface of the rotary body.

The contact piece and the common contact piece are attached to an insulating base made of an insulating material, and the contact piece and the common contact piece are provided to extend in the direction of the rotating body with the insulating base as a reference plane. The rotary encoder according to any one of claims 1 to 3, wherein: