JP4155119B2

JP4155119B2 - Retainer

Info

Publication number: JP4155119B2
Application number: JP2003172440A
Authority: JP
Inventors: 和光藤森
Original assignee: Seiko Epson Corp
Current assignee: Seiko Epson Corp
Priority date: 2003-06-17
Filing date: 2003-06-17
Publication date: 2008-09-24
Anticipated expiration: 2023-06-17
Also published as: JP2005011905A

Description

【０００１】
【発明の属する技術分野】
本発明は、保持具に関する。特に本発明は、装置本体に取り付けられ、環状部品を保持する保持具に関する。
【０００２】
【従来の技術】
液体噴射装置の一例としての記録装置において、複数箇所に配された電気回路部の間を接続するために、フラットケーブルが用いられる。このフラットケーブルを記録装置の装置本体の取付面に保持するために、保持具が用いられる（例えば、特許文献１）。この保持具は、長手方向の中央部が両端部よりも装置本体の取付面側に近くなるように反った保持具本体と、保持具本体の両端に、取付面の二つの係合穴部にそれぞれ係合する係合爪を有する。保持具の係合爪が取付面の係合穴部に挿入されるとともに、保持具本体の中央部が、弾性力により取付面との間でフラットケーブルを挟んで、フラットケーブルを保持する。
【０００３】
【特許文献】
特許第３２２０６８９号公報（第７図）
【０００４】
【発明が解決しようとする課題】
ここで、フラットケーブルから電気回路部へ入力される高周波ノイズを遮断するために、フラットケーブルを挿入するトロイダルコアが用いられる。しかしながら、上記の保持具を用いて、フラットケーブルが挿入されたトロイダルコアを装置本体に保持するのは難しかった。
【０００５】
そこで本発明は、上記の課題を解決することのできる保持具を提供することを目的とする。この目的は特許請求の範囲における独立項に記載の特徴の組み合わせにより達成される。また従属項は本発明の更なる有利な具体例を規定する。
【０００６】
【課題を解決するための手段】
即ち、本発明の第1の形態によると、装置本体の取付面に取り付けられ、取付面との間で環状部品を保持する保持具であって、環状部品の最も長い外径よりも長く延伸し、長手方向に渡って弾性変形する保持具本体と、保持具本体の長手方向について環状部品を保持すべく、保持具本体の長手方向の両端近傍から取付面へ向けて互いに平行に延伸し、先端部が取付面に設けられた二つの係合穴部にそれぞれ係合する二つの取付面係合部と、保持具本体において二つの取付面係合部の間に設けられ、保持具本体の短手方向について環状部品を保持すべく、前記保持具本体の前記短手方向の外側から前記取付面に突起する保持突起とを備え、保持具本体が長手方向に渡って弾性変形することにより二つの取付面係合部の先端部が二つの係合穴部の間の距離に広げられた場合においても、保持突起の先端が、保持具本体の中央部よりも、さらに取付面側に突出する長さを有する。これにより、取付面係合部が広げられた場合にも環状部品を保持した状態が保たれるので、保持具とともに環状部品を装置本体に容易に取り付けることができる。
【０００７】
上記保持具において、保持突起は、保持具本体の長手方向の中央部に配されてもよい。これにより、取付面係合部が広げられた場合にも、環状部品を保持した状態を確実に保つことができる。
【０００８】
上記保持具は、貫通穴にフラットケーブルが挿入されるトロイダルコアを環状部品として取付面に取り付け、保持突起は、取付面に取り付けられた状態において、トロイダルコアの貫通穴上に突出しない長さを有してもよい。これにより、トロイダルコアを貫通するケーブルが、保持突起と接触することにより破損するのを防ぐことができる。
【０００９】
上記保持具において、保持具本体の長手方向に沿って、短手方向の左右に互い違いに、複数の保持突起が配されてもよい。これにより、保持具本体の短手方向について、保持具が環状部品を安定して保持することができる。
【００１０】
上記保持具において、一つの保持突起が、保持具本体の長手方向の中央部に配されるとともに、二つの保持突起が、長手方向について一つの保持突起と二つの取付面係合部との間に配されてもよい。これにより、保持具本体の短手方向について、保持具が環状部品をより安定して保持することができる。
【００１１】
上記保持具において、保持具本体は、取付面に取り付けられた場合に環状部品を取付面へ押圧すべく、長手方向における中央部が両端近傍よりも取付面に近く弓なりに反っていてもよい。これにより、装置本体に取り付けられた場合に、保持具が弾性変形して環状部品を取付面に押圧するので、環状部品をより安定して保持することができる。
【００１２】
上記保持具において、二つの取付面係合部の各々は環状部品の最も短い外径と略同一距離だけ保持具本体から離れた位置に、内側に向いて設けられ、二つの係合穴部のそれぞれに貫通して係止する係止爪を有してもよい。これにより、長手方向につても、環状部品を安定して保持することができる。
【００１３】
上記保持具において、二つの取付面係合部の各々における、保持具本体より取付面に近い位置から、保持具本体の外側であって、取付面から離れる斜め方向に向けて延伸し、互いに近づく向きに操作される操作部であって、互いに近づく向きに操作されることにより、保持具本体を長手方向に渡って弾性変形させて、二つの取付面係合部における先端部の間の距離を広げる操作部をさらに備えてもよい。これにより、環状部品が保持具に保持された状態で、取付面係合部を係合穴部に挿入すべく、取付面係合部を容易に広げることができる。
【００１４】
なお上記の発明の概要は、本発明の必要な特徴の全てを列挙したものではなく、これらの特徴群のサブコンビネーションも又発明となりうる。
【００１５】
【発明の実施の形態】
以下、発明の実施の形態を通じて本発明を説明するが、以下の実施形態は特許請求の範囲にかかる発明を限定するものではなく、又実施形態の中で説明されている特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。
【００１６】
図１は、本実施形態による装置本体１０の斜視図である。図１に示す装置本体１０は、液体噴射装置の一例としての記録装置の本体である。装置本体１０は、電気回路基板が配される回路部１２と、この回路部１２に電気的に接続されたコネクタ部１４と、これら回路部１２およびコネクタ部１４が取り付けられる取付面１８を備える。コネクタ部１４には、フラットケーブル６０が電気的に接続される。
【００１７】
従来の保持具は、フラットケーブル６０を直接、装置本体１０に保持する。この保持具は、長手方向の中央部が両端部よりも装置本体１０の取付面１８側に近くなるように反った保持具本体と、保持具本体の両端に、取付面１８の二つの係合穴部２０、３０にそれぞれ係合する係合爪を有する。保持具の係合爪が係合穴部２０、３０に挿入されるとともに、保持具本体の中央部が、取付面１８との間でフラットケーブル６０を挟むことにより、フラットケーブル６０を保持する。
【００１８】
ここで、図１に示すように、フラットケーブル６０から回路部１２へ入力される高周波ノイズを遮断するために、フラットケーブル６０が挿入される貫通穴４２を有するトロイダルコア４０が用いられる。しかしながら、上記の従来の保持具を用いてトロイダルコア４０を装置本体１０に保持するのは難しかった。そこで、本実施形態は、貫通穴４２にフラットケーブル６０が挿入されたトロイダルコア４０を、取付面１８に取り付けるコア保持具１００を提供する。なお、本実施形態において、取付面１８が水平面であり、この取付面１８の上にトロイダルコア４０が載置される例について説明する。
【００１９】
図２（Ａ）から図２（Ｃ）は、トロイダルコア４０の平面図、正面図および側面図である。トロイダルコア４０は、フェライト等の磁性体により形成され、中央に貫通穴４２を有する環状部品である。トロイダルコア４０は、装置本体１０においてトロイダルコア４０が載置される取付面１８と略平行な上平板部４４および下平板部４６、ならびにこれら上平板部４４および下平板部４６をつなぐ円弧部４８、４９を有する。これにより、貫通穴４２は、図２（Ｂ）の正面図において左右に長い長穴の形状を有する。トロイダルコア４０は、最も大きい外径としての長さＬ_Ｃ、貫通穴４２の貫通方向に幅Ｗ_Ｃ、および、最も小さい外径としての高さＨ_Ｃの大きさを有する。また、上平板部４４は厚さＴを有する。
【００２０】
図３（Ａ）から図３（Ｄ）は、本実施形態における保持具の一例としてのコア保持具１００の平面図、正面図、底面図および側面図である。図３（Ｄ）は、図３（Ｂ）の左方向からみた側面図である。コア保持具１００は、図３（Ｂ）の正面図において左右に延伸する保持具本体１１０と、この保持具本体１１０の左右の両端付近から取付面１８へ向けて平行に延伸する取付面係合部１２０、１３０とを備え、全体が略Ｕ字を上下に反転した形状を有する。コア保持具１００は、弾性を有する材料により一体成形される。
【００２１】
保持具本体１１０は、トロイダルコア４０の最も大きい外径よりも長く（Ｌ_Ｈ＞Ｌ_Ｃ）、トロイダルコア４０の短手方向よりもわずかに広い（Ｗ_Ｈ＞Ｗ_Ｃ）、略板形状を有する。保持具本体１１０は、長手方向について、中央部１１３が左右の両端近傍よりも取付面１８に近くなるように弓なりに反っており、長手方向に渡って弾性変形する。
【００２２】
取付面係合部１２０、１３０は、保持具本体１１０の長手方向についてトロイダルコア４０を保持すべく、保持具本体１１０の長手方向について互いにトロイダルコア４０の長さＬ_Ｃよりも離れて配される。取付面係合部１２０、１３０は、保持具本体１１０から取付面１８へ向けて、すなわち図３（Ｂ）における下方へ、互いに略平行に延伸する。
【００２３】
取付面係合部１２０は、保持具本体１１０の長手方向について内側に向いた係止爪１２２を有する。係止爪１２２は、上端に水平面を有する。取付面係合部１３０は、係止爪１２２と同一の構成である係止爪１３２を有する。これら係止爪１２２および係止爪１３２は互いに向かい合うように配される。取付面係合部１２０、１３０の係止爪１２２、１３２の水平面から保持具本体１１０の中央部１１３までの高さＨ_Ｈは、トロイダルコア４０の高さＨ_Ｃと装置本体１０において係止爪１２２、１３２が係止する部分の厚さの和よりもわずかに小さい。また、取付面係合部１２０、１３０は、保持具本体１１０より短手方向について幅が狭い。
【００２４】
取付面係合部１２０における、保持具本体１１０より取付面１８に近い位置から、操作部１６０が、保持具本体１１０の外側であって、取付面１８から離れる斜め方向に向けて延伸する。本実施形態において、操作部１６０は、取付面係合部１２０の中央より保持具本体１１０よりの位置から延伸する。操作部１６０は、保持具本体１１０との間に間隙１６２を有する。取付面係合部１３０から操作部１６０と同一の構成である操作部１７０が延伸し、操作部１７０は、保持具本体１１０との間に間隙１７２を有する。
【００２５】
コア保持具１００は、保持具本体１１０の短手方向についてトロイダルコア４０を保持する保持突起１４０を有する。保持突起１４０は、保持具本体１１０の長手方向に沿って、二つの取付面係合部１２０、１３０の間に、短手方向の左右に互い違いに保持具本体１１０から外側に向けて複数配される。これにより、保持具本体１１０の短手方向に開閉する金型を用いて、コア保持具１００を容易に成形することができる。図３（Ａ）から図３（Ｄ）に示すコア保持具１００は、保持具本体１１０から下方へ向けて平行に延伸する中央保持突起１４２、周縁保持突起１５４および周縁保持突起１５６の三つの保持突起１４０を有する。中央保持突起１４２は、保持具本体１１０の短手方向の一端１１１であって長手方向の中央部１１３に配される。周縁保持突起１５４、１５６は、保持具本体１１０の短手方向の他端１１２であって、長手方向について中央部１１３と取付面係合部１２０、１３０との間にそれぞれ配される。
【００２６】
図４は、装置本体１０の取付面１８に取り付けられる前のコア保持具１００と取付面１８とを示す。取付面１８は、コア保持具１００の取付面係合部１２０、１３０が挿入される係合穴部２０、３０を有する。係合穴部２０は、全体が略矩形の貫通穴であり、コア保持具１００の長手方向について、互いに向かい合った縁面２２、２４を有する。同様に、係合穴部３０は、全体が略矩形の貫通穴であり、縁面３２、３４を有する。係合穴部２０、３０における互いに近い方の縁面２２、３２は、コア保持具１００の取付面係合部１２０、１３０の距離Ｌ_Ｈと同一の距離Ｌ_Ｂだけ互いに離れるように配される。また、係合穴部２０、３０は、保持具本体１１０の長手方向について、係止爪１２２、１３２を挿入することができる長さDを有する。係合穴部２０、３０は、保持具本体１１０の短手方向について、取付面係合部１２０、１３０の幅と略同一の幅を有する。
【００２７】
図４に示すように保持具本体１１０が弾性変形していない状態において、中央保持突起１４２、周縁保持突起１５４、１５６は、トロイダルコア４０の貫通穴４２上に突出しない長さを有する。例えば、保持具本体１１０の中央部１１３から下方に延伸する中央保持突起１４２は、トロイダルコア４０の厚みＴよりも短い。なお、周縁保持突起１５４、１５６の長さについては、さらに後述する。
【００２８】
コア保持具１００によりトロイダルコア４０が装置本体１０に取り付けられる場合に、まず、トロイダルコア４０の貫通穴４２にフラットケーブル６０が挿入される。このトロイダルコア４０が保持具本体１１０、取付面係合部１２０、１３０、中央保持突起１４２、周縁保持突起１５４および周縁保持突起１５６に囲まれる領域に配置されることより、コア保持具１００が、トロイダルコア４０を保持する。トロイダルコア４０を保持した状態で、図４に示すように、取付面係合部１２０、１３０がそれぞれ係合穴部２０、３０に対向するように、コア保持具１００が取付面１８に向けられる。
【００２９】
図５（Ａ）から図６（Ｂ）は、コア保持具１００が取付面１８に取り付けられる工程を示す。図５（Ｂ）および図６（Ｂ）は、図５（Ａ）および図６（Ａ）の周縁保持突起１５６付近の部分拡大図である。図５（Ａ）に示すように、操作部１６０、１７０が互いに近づく方向（図中の矢印Ａ）に操作されることにより、保持具本体１１０の左右の両端が上方に弾性変形する。この弾性変形に伴い、取付面係合部１２０、１３０の係止爪１２２、１３２が互いに遠ざかる方向に、取付面係合部１２０、１３０が広がる。これらの操作部１６０、１７０により、取付面係合部１２０、１３０を容易に広げることができる。
【００３０】
この場合に、図５（Ａ）に示すように、係止爪１２２、１３２がそれぞれ係合穴部２０、３０に挿入されるべく、係止爪１２２と係止爪１３２との向かい合う先端が、縁面２２と縁面３２との距離Ｌ_Ｂまで広げられる。保持具本体１１０の弾性変形に伴い、保持具本体１１０の中央部１１３と左右の両端との間に配された周縁保持突起１５４、１５６は、互いにハの字となる方向に向きが変わるとともに、上方に変位する。この状態において、周縁保持突起１５４、１５６の先端は、保持具本体１１０における取付面１８に最も近い部分すなわち中央部１１３よりも、さらに取付面１８側に突起する長さを有する。これにより、図５（Ｂ）に示すように、取付面係合部１２０、１３０が広げられた場合にも、周縁保持突起１５６の端部１５７が上平板部４４の上端面よりも下に位置する。なお、中央保持突起１４２は、保持具本体１１０の中央部１１３から下方に延伸しているので、保持具本体１１０の弾性変形の有無に関わらず、保持具本体１１０における装置本体１０に最も近い部分よりもさらに装置本体１０に突起している。これにより、取付面係合部１２０、１３０が広げられた場合にも、中央保持突起１４２および周縁保持突起１５４、１５６が、保持具本体１１０の短手方向についてトロイダルコア４０の移動を制限する。
【００３１】
係止爪１２２と係止爪１３２との向かい合う先端が、縁面２２と縁面３２との距離Ｌ_Ｂまで広げられた状態で、係止爪１２２、１３２がそれぞれ係合穴部２０、３０に挿入される。係止爪１２２、１３２の水平面が、装置本体１０の下面１６を越えるまで係止爪１２２、１３２がさらに係合穴部２０、３０に挿入される。係止爪１２２、１３２の水平面が装置本体１０の下面１６よりも下方に位置した状態で、操作部１６０、１７０が解放される。操作部１６０、１７０が解放されることにより、保持具本体１１０が弾性変形から元の状態に復帰する。これにともない、係止爪１２２、１３２が互いに近づき、取付面係合部１２０、１３０が互いに平行となる位置に復帰する。これにより、取付面係合部１２０、１３０における係止爪１２２、１３２の上方近傍が、それぞれ縁面２２、３２に当接する。また、係止爪１２２、係止爪１３２の水平面が、装置本体１０の下面１６に当接する。
【００３２】
このようにして、図６（Ａ）に示すように、コア保持具１００が装置本体１０に取り付けられるとともに、コア保持具１００と装置本体１０の取付面１８とによりトロイダルコア４０が保持される。取付面係合部１２０、１３０が略同一の幅を有する係合穴部２０、３０に挿入されるので、コア保持具１００は、保持具本体１１０の短手方向について、取付面１８に確実に固定される。また、取付面係合部１２０、１３０における係止爪１２２、１３２の上方近傍が縁面２２、３２に当接するので、コア保持具１００は、保持具本体１１０の長手方向についても、取付面１８に確実に固定される。
【００３３】
また、中央保持突起１４２および周縁保持突起１５４、１５６が、保持具本体１１０の短手方向についてトロイダルコア４０の移動を制限するので、トロイダルコア４０が保持具本体１１０の短手方向についてコア保持具１００および装置本体１０の取付面１８に対して確実に保持される。また、保持具本体１１０の長手方向については、取付面係合部１２０、１３０がトロイダルコア４０の移動を制限するので、保持具本体１１０の長手方向についても、トロイダルコア４０がコア保持具１００および取付面１８に対して確実に保持される。
【００３４】
また、取付面係合部１２０、１３０の係止爪１２２、１３２の水平面から保持具本体１１０の中央部１１３までの高さＨ_Ｈは、取り付け前の状態において、トロイダルコア４０の高さＨ_Ｃと装置本体１０において係止爪１２２、１３２が係止する部分の厚さの和よりもわずかに小さい。よって、コア保持具１００がトロイダルコア４０を保持して装置本体１０の取付面１８に取り付けられた場合に、保持具本体１１０の弓なりに反った中央部１１３がトロイダルコア４０の上平板部４４を取付面１８へ向けて押圧する。これにより、保持具本体１１０の弾性力により取付面１８との間でトロイダルコア４０が挟みこまれ、高さ方向についても、トロイダルコア４０がコア保持具１００および取付面１８に対して確実に保持される。
【００３５】
また、図６（Ａ）および図６（Ｂ）に示すように、中央保持突起１４２、周縁保持突起１５４および周縁保持突起１５６のいずれも、トロイダルコア４０の貫通穴４２上に突出せず、貫通穴４２よりも上方に位置する。よって、これにより、貫通穴４２を貫通するフラットケーブル６０が、中央保持突起１４２、周縁保持突起１５４、周縁保持突起１５６のいずれかと接触して破損することを防ぐことができる。
【００３６】
なお、図１から図６（Ｂ）に示す実施形態において、装置本体１０の取付面１８は水平面であった。しかしながら、トロイダルコア４０が取り付けられる方向は、これに限られない。例えば、装置本体１０の取付面１８が、係合穴部２０と係合穴部３０とを上下に配する垂直面であって、この垂直面に対し、トロイダルコア４０およびコア保持具１００が、長手方向を上下方向とする姿勢で取付面１８に取り付けられてもよい。
【００３７】
以上、本実施形態によれば、コア保持具１００を装置本体１０の取付面１８に取り付けるべく取付面係合部１２０、１３０が広げられた場合にも、保持突起１４０によりトロイダルコア４０を保持した状態が保たれるので、コア保持具１００をトロイダルコア４０とともに取付面１８へ容易に取り付けることができる。これにより、コア保持具１００と別個の保持工具等を用いずに、トロイダルコア４０の取り付け作業をすることができる。また、コア保持具１００が取付面１８に取り付けられた状態においても、保持突起１４０によりトロイダルコア４０の移動が制限されるので、トロイダルコア４０がコア保持具１００および取付面１８に対して確実に保持される。
【００３８】
以上、本発明を実施の形態を用いて説明したが、本発明の技術的範囲は上記実施の形態に記載の範囲には限定されない。上記実施の形態に、多様な変更又は改良を加えることができる。その様な変更又は改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。
【図面の簡単な説明】
【図１】本実施形態による装置本体１０の斜視図である。
【図２】（Ａ）はトロイダルコア４０の平面図、（Ｂ）は正面図、および（Ｃ）は側面図である。
【図３】（Ａ）はコア保持具１００の平面図、（Ｂ）は正面図、（Ｃ）は底面図、および（Ｄ）は側面図である。
【図４】コア保持具１００と取付面１８を示す。
【図５】（Ａ）はコア保持具１００が取付面１８に取り付けられる工程を示し、（Ｂ）はその部分拡大図である。
【図６】（Ａ）はコア保持具１００が取付面１８に取り付けられる工程を示し、（Ｂ）はその部分拡大図である。
【符号の説明】
１０...装置本体、１２...回路部、１４...コネクタ部、１６...下面、１８...取付面、２０...係合穴部、２２...縁面、２４...縁面、３０...係合穴部、３２...縁面、３４...縁面、４０...トロイダルコア、４２...貫通穴、４４...上平板部、４６...下平板部、４８...円弧部、４９...円弧部、６０...フラットケーブル、１００...コア保持具、１１０...保持具本体、１１１...一端、１１２...他端、１１３...中央部、１２０...取付面係合部、１２２...係止爪、１３０...取付面係合部、１３２...係止爪、１４０...保持突起、１４２...中央保持突起、１５４...周縁保持突起、１５６...周縁保持突起、１５７...端部、１６０...操作部、１６２...間隙、１７０...操作部、１７２...間隙[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a holder. In particular, the present invention relates to a holder that is attached to an apparatus body and holds an annular part.
[0002]
[Prior art]
In a recording apparatus as an example of a liquid ejecting apparatus, a flat cable is used to connect between electric circuit portions arranged at a plurality of locations. A holding tool is used to hold the flat cable on the mounting surface of the main body of the recording apparatus (for example, Patent Document 1). This holder has a holder body that is warped so that the central portion in the longitudinal direction is closer to the attachment surface side of the apparatus body than both ends, and two engagement holes on the attachment surface at both ends of the holder body. Each has an engaging claw to be engaged. The engaging claws of the holding tool are inserted into the engaging hole portions of the mounting surface, and the central portion of the holding tool body holds the flat cable by sandwiching the flat cable with the mounting surface by elastic force.
[0003]
[Patent Literature]
Japanese Patent No. 3220689 (FIG. 7)
[0004]
[Problems to be solved by the invention]
Here, a toroidal core into which the flat cable is inserted is used to block high-frequency noise input from the flat cable to the electric circuit unit. However, it has been difficult to hold the toroidal core into which the flat cable is inserted in the apparatus main body using the holder.
[0005]
Then, an object of this invention is to provide the holder which can solve said subject. This object is achieved by a combination of features described in the independent claims. The dependent claims define further advantageous specific examples of the present invention.
[0006]
[Means for Solving the Problems]
That is, according to the first aspect of the present invention, the holder is attached to the attachment surface of the apparatus main body and holds the annular part between the attachment surfaces and extends longer than the longest outer diameter of the annular part. A holder body that is elastically deformed in the longitudinal direction; and in order to hold the annular part in the longitudinal direction of the holder body, the holder body extends parallel to each other from the vicinity of both ends in the longitudinal direction toward the mounting surface. Two mounting surface engaging portions that respectively engage with the two engaging hole portions provided on the mounting surface, and the holder body between the two mounting surface engaging portions. In order to hold the annular part in the hand direction, a holding protrusion protruding from the outer side in the short direction of the holder body to the mounting surface is provided, and the holder body elastically deforms in the longitudinal direction, thereby The tip of the mounting surface engaging part is between the two engaging holes. Even when the distance is widened, the tip of the holding projection has a length that protrudes further to the mounting surface side than the central portion of the holder body. Thereby, since the state which hold | maintained the annular component is maintained also when an attachment surface engaging part is expanded, an annular component can be easily attached to an apparatus main body with a holder.
[0007]
In the holder, the holding protrusion may be arranged at a central portion in the longitudinal direction of the holder body. Thereby, even when the attachment surface engaging portion is expanded, the state in which the annular component is held can be reliably maintained.
[0008]
The holder has a toroidal core into which the flat cable is inserted into the through hole attached to the mounting surface as an annular part, and the holding projection has a length that does not protrude onto the through hole of the toroidal core when attached to the mounting surface. You may have. Thereby, it can prevent that the cable which penetrates a toroidal core contacts with a holding protrusion, and is damaged.
[0009]
In the holder, a plurality of holding protrusions may be arranged alternately along the longitudinal direction of the holder body on the left and right sides in the short direction. Thereby, the holder can hold | maintain an annular component stably about the transversal direction of a holder main body.
[0010]
In the holder, one holding projection is arranged at a central portion in the longitudinal direction of the holder body, and two holding projections are arranged between one holding projection and two attachment surface engaging portions in the longitudinal direction. May be arranged. Thereby, the holder can hold | maintain an annular component more stably about the transversal direction of a holder main body.
[0011]
In the holder described above, the holder body may be bowed closer to the attachment surface than in the vicinity of both ends in order to press the annular component against the attachment surface when the holder body is attached to the attachment surface. Thereby, when attached to the apparatus main body, the holder is elastically deformed and presses the annular part against the attachment surface, so that the annular part can be held more stably.
[0012]
In the holder, each of the two mounting surface engaging portions is provided inwardly at a position separated from the holder main body by a distance substantially the same as the shortest outer diameter of the annular part, and the two engaging hole portions You may have the latching claw penetrated and latched in each. Thereby, an annular component can be stably held also in the longitudinal direction.
[0013]
In the holder, the two attachment surface engaging portions extend from the position closer to the attachment surface than the holder body to the outside of the holder body and in an oblique direction away from the attachment surface, and approach each other. The operation portion is operated in the direction, and the holder body is elastically deformed in the longitudinal direction by being operated in directions approaching each other, so that the distance between the tip portions of the two attachment surface engaging portions is increased. You may further provide the operation part to expand. Thereby, in a state where the annular component is held by the holder, the attachment surface engaging portion can be easily expanded so that the attachment surface engaging portion can be inserted into the engagement hole portion.
[0014]
The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.
[0016]
FIG. 1 is a perspective view of an apparatus main body 10 according to the present embodiment. An apparatus main body 10 illustrated in FIG. 1 is a main body of a recording apparatus as an example of a liquid ejecting apparatus. The apparatus main body 10 includes a circuit unit 12 on which an electric circuit board is disposed, a connector unit 14 electrically connected to the circuit unit 12, and an attachment surface 18 to which the circuit unit 12 and the connector unit 14 are attached. A flat cable 60 is electrically connected to the connector portion 14.
[0017]
The conventional holder holds the flat cable 60 directly on the apparatus main body 10. The holder includes a holder body that is warped so that the center portion in the longitudinal direction is closer to the attachment surface 18 side of the apparatus body 10 than both ends, and two engagements of the attachment surface 18 at both ends of the holder body. It has an engaging claw that engages with each of the holes 20 and 30. The engaging claws of the holder are inserted into the engaging holes 20 and 30, and the flat cable 60 is held by the center portion of the holder body sandwiching the flat cable 60 between the mounting surface 18.
[0018]
Here, as shown in FIG. 1, a toroidal core 40 having a through hole 42 into which the flat cable 60 is inserted is used to block high-frequency noise input from the flat cable 60 to the circuit unit 12. However, it has been difficult to hold the toroidal core 40 in the apparatus main body 10 using the above-described conventional holder. Therefore, the present embodiment provides the core holder 100 that attaches the toroidal core 40 in which the flat cable 60 is inserted into the through hole 42 to the attachment surface 18. In the present embodiment, an example in which the mounting surface 18 is a horizontal surface and the toroidal core 40 is placed on the mounting surface 18 will be described.
[0019]
FIGS. 2A to 2C are a plan view, a front view, and a side view of the toroidal core 40. The toroidal core 40 is an annular part made of a magnetic material such as ferrite and having a through hole 42 in the center. The toroidal core 40 includes an upper flat plate portion 44 and a lower flat plate portion 46 that are substantially parallel to the mounting surface 18 on which the toroidal core 40 is placed in the apparatus main body 10, and an arc portion 48 that connects the upper flat plate portion 44 and the lower flat plate portion 46. , 49. Thereby, the through hole 42 has a shape of a long hole that is long in the left and right in the front view of FIG. The toroidal core 40 has a length L _C as the largest outer diameter, a width W _{C in} the penetration direction of the through hole 42, and a height H _C as the smallest outer diameter. The upper flat plate portion 44 has a thickness T.
[0020]
FIGS. 3A to 3D are a plan view, a front view, a bottom view, and a side view of a core holder 100 as an example of a holder in the present embodiment. FIG. 3D is a side view seen from the left in FIG. The core holder 100 includes a holder main body 110 extending left and right in the front view of FIG. 3B, and a mounting surface engagement extending in parallel from the vicinity of both left and right ends of the holder main body 110 toward the mounting surface 18. Part 120 and 130, and the whole has a shape that is substantially U-shaped upside down. The core holder 100 is integrally formed of an elastic material.
[0021]
The holder main body 110 is longer than the largest outer diameter of the toroidal core 40 (L _H > L _C ), slightly wider than the transverse direction of the toroidal core 40 (W _H > W _C ), and has a substantially plate shape. . The holder main body 110 is warped in a bow so that the central portion 113 is closer to the mounting surface 18 than the vicinity of both left and right ends in the longitudinal direction, and elastically deforms in the longitudinal direction.
[0022]
The mounting surface engaging portions 120 and 130 are arranged apart from the length L _C of the toroidal core 40 in the longitudinal direction of the holder body 110 in order to hold the toroidal core 40 in the longitudinal direction of the holder body 110. . The attachment surface engaging portions 120 and 130 extend from the holder main body 110 toward the attachment surface 18, that is, downward in FIG.
[0023]
The attachment surface engaging portion 120 has a locking claw 122 facing inward in the longitudinal direction of the holder main body 110. The locking claw 122 has a horizontal surface at the upper end. The attachment surface engaging portion 130 has a locking claw 132 having the same configuration as the locking claw 122. The locking claws 122 and the locking claws 132 are arranged so as to face each other. The height _{H H} from the horizontal plane of the locking claw 122, 132 of the attachment surface engagement portion 120, 130 to the middle portion 113 of the holder main body 110, the locking claw at a height _{H C} and the apparatus body 10 of the toroidal core 40 It is slightly smaller than the sum of the thicknesses of the portions where 122 and 132 are locked. Further, the mounting surface engaging portions 120 and 130 are narrower in the short direction than the holder main body 110.
[0024]
From the position closer to the attachment surface 18 than the holder main body 110 in the attachment surface engaging portion 120, the operation portion 160 extends outward in the diagonal direction away from the attachment surface 18. In the present embodiment, the operation portion 160 extends from the center of the attachment surface engaging portion 120 from the position from the holder main body 110. The operation unit 160 has a gap 162 between it and the holder body 110. An operation portion 170 having the same configuration as the operation portion 160 extends from the attachment surface engaging portion 130, and the operation portion 170 has a gap 172 between the holder main body 110 and the operation portion 170.
[0025]
The core holder 100 has a holding protrusion 140 that holds the toroidal core 40 in the short direction of the holder body 110. A plurality of holding projections 140 are arranged outwardly from the holding tool body 110 in the lateral direction between the two attachment surface engaging portions 120 and 130 along the longitudinal direction of the holding tool body 110. The Thereby, the core holder 100 can be easily formed using a mold that opens and closes in the short direction of the holder body 110. The core holder 100 shown in FIGS. 3 (A) to 3 (D) has three holdings: a central holding protrusion 142, a peripheral holding protrusion 154, and a peripheral holding protrusion 156 extending in parallel downward from the holding body 110. A protrusion 140 is provided. The central holding protrusion 142 is disposed at the one end 111 in the short direction of the holder main body 110 and at the central portion 113 in the longitudinal direction. The peripheral holding projections 154 and 156 are the other ends 112 in the short direction of the holder main body 110 and are respectively arranged between the central portion 113 and the mounting surface engaging portions 120 and 130 in the longitudinal direction.
[0026]
FIG. 4 shows the core holder 100 and the attachment surface 18 before being attached to the attachment surface 18 of the apparatus main body 10. The attachment surface 18 has engagement hole portions 20 and 30 into which the attachment surface engagement portions 120 and 130 of the core holder 100 are inserted. The engagement hole portion 20 is a substantially rectangular through hole, and has edge surfaces 22 and 24 facing each other in the longitudinal direction of the core holder 100. Similarly, the entire engagement hole 30 is a substantially rectangular through hole, and has edge surfaces 32 and 34. Edge surfaces 22 and 32 closer to each other at the engagement holes 20 and 30 is arranged only away from each other a distance _{L B} the same as the distance _{L H} of the mounting surface engaging portion 120, 130 of the core holder 100 . Further, the engagement holes 20 and 30 have a length D in which the locking claws 122 and 132 can be inserted in the longitudinal direction of the holder main body 110. The engagement holes 20 and 30 have substantially the same width as that of the attachment surface engagement portions 120 and 130 in the short direction of the holder body 110.
[0027]
As shown in FIG. 4, the center holding protrusion 142 and the peripheral edge holding protrusions 154 and 156 have a length that does not protrude onto the through hole 42 of the toroidal core 40 when the holder main body 110 is not elastically deformed. For example, the center holding protrusion 142 extending downward from the center portion 113 of the holder body 110 is shorter than the thickness T of the toroidal core 40. The lengths of the peripheral holding protrusions 154 and 156 will be described later.
[0028]
When the toroidal core 40 is attached to the apparatus main body 10 by the core holder 100, first, the flat cable 60 is inserted into the through hole 42 of the toroidal core 40. Since the toroidal core 40 is disposed in a region surrounded by the holder main body 110, the mounting surface engaging portions 120 and 130, the center holding protrusion 142, the peripheral edge holding protrusion 154, and the peripheral edge holding protrusion 156, the core holder 100 is The toroidal core 40 is held. With the toroidal core 40 held, the core holder 100 is directed toward the mounting surface 18 so that the mounting surface engaging portions 120 and 130 face the engaging hole portions 20 and 30, respectively, as shown in FIG. .
[0029]
FIG. 5A to FIG. 6B show a process in which the core holder 100 is attached to the attachment surface 18. 5B and 6B are partially enlarged views of the vicinity of the peripheral edge holding projection 156 in FIGS. 5A and 6A. As shown in FIG. 5 (A), the left and right ends of the holder body 110 are elastically deformed upward by operating the operation parts 160 and 170 in a direction approaching each other (arrow A in the figure). With this elastic deformation, the attachment surface engaging portions 120 and 130 expand in a direction in which the locking claws 122 and 132 of the attachment surface engaging portions 120 and 130 move away from each other. By these operation parts 160 and 170, the attachment surface engaging parts 120 and 130 can be easily expanded.
[0030]
In this case, as shown in FIG. 5 (A), the opposing tips of the locking claws 122 and 132 are inserted so that the locking claws 122 and 132 are inserted into the engagement holes 20 and 30, respectively. It is extended to the distance _{L B} between the edge surface 22 and edge surface 32. As the holder body 110 is elastically deformed, the peripheral holding protrusions 154 and 156 arranged between the central portion 113 of the holder body 110 and both the left and right ends change in the direction of the letter C, and Displace upward. In this state, the distal ends of the peripheral holding protrusions 154 and 156 have a length that protrudes further toward the attachment surface 18 than the portion closest to the attachment surface 18 in the holder body 110, that is, the central portion 113. Accordingly, as shown in FIG. 5B, even when the attachment surface engaging portions 120 and 130 are expanded, the end portion 157 of the peripheral holding projection 156 is positioned below the upper end surface of the upper flat plate portion 44. To do. Since the central holding projection 142 extends downward from the central portion 113 of the holder main body 110, the portion of the holder main body 110 closest to the apparatus main body 10 regardless of the presence or absence of elastic deformation of the holder main body 110. Furthermore, it protrudes from the apparatus body 10. Thereby, even when the attachment surface engaging portions 120 and 130 are expanded, the center holding protrusion 142 and the peripheral edge holding protrusions 154 and 156 restrict the movement of the toroidal core 40 in the short direction of the holder main body 110.
[0031]
Facing the tip of the locking claw 122 and the engagement claw 132 is in a state where the distance is extended to _{L B} of the edge surface 22 and edge surface 32, locking claws 122, 132 are each engaging holes 20 and 30 Inserted. The locking claws 122 and 132 are further inserted into the engagement holes 20 and 30 until the horizontal surfaces of the locking claws 122 and 132 exceed the lower surface 16 of the apparatus main body 10. The operation units 160 and 170 are released in a state where the horizontal surfaces of the locking claws 122 and 132 are positioned below the lower surface 16 of the apparatus main body 10. When the operation units 160 and 170 are released, the holder main body 110 returns to its original state from the elastic deformation. Along with this, the locking claws 122 and 132 approach each other, and the attachment surface engaging portions 120 and 130 return to the positions parallel to each other. Thereby, the upper vicinity of the latching claws 122 and 132 in the attachment surface engaging portions 120 and 130 contacts the edge surfaces 22 and 32, respectively. Further, the horizontal surfaces of the locking claws 122 and the locking claws 132 are in contact with the lower surface 16 of the apparatus main body 10.
[0032]
6A, the core holder 100 is attached to the apparatus main body 10, and the toroidal core 40 is held by the core holder 100 and the attachment surface 18 of the apparatus main body 10. As shown in FIG. Since the attachment surface engaging portions 120 and 130 are inserted into the engagement hole portions 20 and 30 having substantially the same width, the core holder 100 is reliably attached to the attachment surface 18 in the short direction of the holder main body 110. Fixed. In addition, since the upper vicinity of the locking claws 122 and 132 in the attachment surface engaging portions 120 and 130 abuts on the edge surfaces 22 and 32, the core holder 100 is attached to the attachment surface 18 in the longitudinal direction of the holder body 110. It is securely fixed to.
[0033]
Further, since the central holding projection 142 and the peripheral holding projections 154 and 156 restrict the movement of the toroidal core 40 in the short direction of the holder main body 110, the toroidal core 40 is the core holder in the short direction of the holder main body 110. 100 and the mounting surface 18 of the apparatus main body 10 are securely held. Moreover, since the attachment surface engaging parts 120 and 130 restrict | limit the movement of the toroidal core 40 about the longitudinal direction of the holder main body 110, the toroidal core 40 also has the core holder 100 and the longitudinal direction of the holder main body 110. The mounting surface 18 is securely held.
[0034]
Further, the height H _H from the horizontal surface of the locking claws 122, 132 of the mounting surface engaging portions 120, 130 to the central portion 113 of the holder body 110 is the height H _C of the toroidal core 40 in the state before mounting. In the apparatus main body 10, the sum of the thicknesses of the portions where the locking claws 122 and 132 are locked is slightly smaller. Therefore, when the core holder 100 holds the toroidal core 40 and is attached to the attachment surface 18 of the apparatus main body 10, the central portion 113 that warps the bow of the holder main body 110 forms the upper flat plate portion 44 of the toroidal core 40. Press toward the mounting surface 18. Thereby, the toroidal core 40 is pinched | interposed between the attachment surfaces 18 with the elastic force of the holder main body 110, and the toroidal core 40 is reliably hold | maintained with respect to the core holder 100 and the attachment surface 18 also in the height direction. Is done.
[0035]
Further, as shown in FIGS. 6A and 6B, none of the central holding protrusion 142, the peripheral holding protrusion 154, and the peripheral holding protrusion 156 protrudes through the through hole 42 of the toroidal core 40, and penetrates. It is located above the hole 42. Therefore, it is possible to prevent the flat cable 60 penetrating the through hole 42 from coming into contact with any one of the central holding protrusion 142, the peripheral holding protrusion 154, and the peripheral holding protrusion 156 and being damaged.
[0036]
In the embodiment shown in FIGS. 1 to 6B, the mounting surface 18 of the apparatus main body 10 is a horizontal plane. However, the direction in which the toroidal core 40 is attached is not limited to this. For example, the mounting surface 18 of the apparatus main body 10 is a vertical surface in which the engagement hole portion 20 and the engagement hole portion 30 are arranged up and down, and the toroidal core 40 and the core holder 100 are disposed on the vertical surface. You may attach to the attachment surface 18 with the attitude | position which makes a longitudinal direction an up-down direction.
[0037]
As described above, according to the present embodiment, the toroidal core 40 is held by the holding protrusion 140 even when the attachment surface engaging portions 120 and 130 are expanded so as to attach the core holder 100 to the attachment surface 18 of the apparatus main body 10. Since the state is maintained, the core holder 100 can be easily attached to the attachment surface 18 together with the toroidal core 40. Thereby, the installation work of the toroidal core 40 can be performed without using a holding tool or the like separate from the core holder 100. In addition, even when the core holder 100 is attached to the attachment surface 18, the movement of the toroidal core 40 is restricted by the holding protrusion 140, so that the toroidal core 40 can be securely attached to the core holder 100 and the attachment surface 18. Retained.
[0038]
As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above embodiment. It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a perspective view of an apparatus main body 10 according to an embodiment.
2A is a plan view of a toroidal core 40, FIG. 2B is a front view, and FIG. 2C is a side view.
3A is a plan view of the core holder 100, FIG. 3B is a front view, FIG. 3C is a bottom view, and FIG. 3D is a side view.
4 shows a core holder 100 and a mounting surface 18. FIG.
5A shows a process of attaching the core holder 100 to the attachment surface 18, and FIG. 5B is a partially enlarged view thereof.
6A shows a process of attaching the core holder 100 to the attachment surface 18, and FIG. 6B is a partially enlarged view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Device main body, 12 ... Circuit part, 14 ... Connector part, 16 ... Lower surface, 18 ... Mounting surface, 20 ... Engagement hole part, 22 ... Edge surface, 24 ... edge surface, 30 ... engagement hole, 32 ... edge surface, 34 ... edge surface, 40 ... toroidal core, 42 ... through hole, 44 ... upper plate 46 ... lower flat plate part, 48 ... arc part, 49 ... arc part, 60 ... flat cable, 100 ... core holder, 110 ... holder body, 111 ... One end, 112 ... the other end, 113 ... center, 120 ... mounting surface engaging portion, 122 ... locking claw, 130 ... mounting surface engaging portion, 132 ... engaging Stopper, 140 ... holding projection, 142 ... center holding projection, 154 ... perimeter holding projection, 156 ... perimeter holding projection, 157 ... end, 160 ... operating portion, 162. ..Gap, 170 ... Operating section, 172 ... Gap

Claims

A holder that is attached to the attachment surface of the apparatus main body and holds an annular part between the attachment surface,
A holder body that extends longer than the longest outer diameter of the annular part and elastically deforms in the longitudinal direction;
In order to hold the annular part in the longitudinal direction of the holder body, the holder body extends parallel to each other from the vicinity of both ends of the holder body in the longitudinal direction, and a tip portion is provided on the attachment surface. Two mounting surface engaging portions that respectively engage with the two engaging hole portions;
In the holder main body, provided between the two attachment surface engaging portions, the attachment from the outer side of the holder main body in the short direction to hold the annular part in the short side direction of the holder main body. Holding protrusions protruding on the surface,
With
Even when the front end portion of the two mounting surface engaging portions is expanded to a distance between the two engaging hole portions by elastically deforming the holder main body in the longitudinal direction, The holder which has the length which the front-end | tip of protrusion protrudes further to the said attachment surface side rather than the part nearest to the said attachment surface in the said holder main body.

The holder according to claim 1, wherein the holding protrusion is disposed at a central portion in the longitudinal direction of the holder body.

The holder is attached to the mounting surface as a toroidal core into which a flat cable is inserted into a through hole as the annular part,
The holder according to claim 1, wherein the holding protrusion has a length that does not protrude onto the through hole of the toroidal core in a state of being attached to the attachment surface.

The holder according to claim 1, wherein a plurality of the holding protrusions are alternately arranged on the left and right sides in the short direction along the longitudinal direction of the holder body.

One holding projection is disposed in the central portion of the holder body in the longitudinal direction, and the two holding projections include the one holding projection and the two attachment surface engaging portions in the longitudinal direction. The holder according to claim 4 arranged between.

When the holder body is attached to the attachment surface, a central portion in the longitudinal direction is bent closer to the attachment surface than near both ends so as to press the annular component against the attachment surface. Item 2. The holder according to Item 1.

Each of the two mounting surface engaging portions is provided inwardly at a position separated from the holder main body by the same distance as the shortest outer diameter of the annular component, and each of the two engaging hole portions. The holder according to claim 1, further comprising a locking claw that penetrates and locks into the hook.

In each of the two mounting surface engaging portions, the outer surface of the holder main body extends from a position closer to the mounting surface than the holder main body toward an oblique direction away from the mounting surface and approaches each other. An operation portion that is operated in a direction, and is operated in a direction approaching each other to elastically deform the holder main body in the longitudinal direction, so that the tip portions of the two attachment surface engaging portions The holder according to claim 1, further comprising an operation unit that increases a distance therebetween.