JP4255152B2

JP4255152B2 - Noise absorber

Info

Publication number: JP4255152B2
Application number: JP32796298A
Authority: JP
Inventors: 島宣昭中; 迫義幸前
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1998-11-18
Filing date: 1998-11-18
Publication date: 2009-04-15
Anticipated expiration: 2018-11-18
Also published as: JP2000151176A

Description

【０００１】
【発明の属する技術分野】
本発明は、電線に対し雑音吸収装置を完全固定し、筐体との接合に際しても一度の作業にて確実に固定することができる低価格の完全固定式及び完全雑音吸収装置に関するもので、更に、完全防水機能を持たせたものもある。
【０００２】
【従来の技術】
従来、被覆電線を筐体に固定する部品としては図１３に示すようなコネクタｂがあり、また、被覆電線を雑音障害から防御するために内部に磁性体を配置した雑音吸収装置としては同じく図１３に示すようなカバー付の雑音吸収装置ａ、或いは図１４に示すような円筒状の雑音吸収装置などが使用されている。その他のタイプの雑音吸収装置としては、例えば筒状のものを２分割したもの、円筒状のものに樹脂製の箱を取り付けたもの、筒状のものを２分割したものに破損防止箱を取り付けたもの、円筒状のものと被覆電線を樹脂により一体成型を施したもの等が知られている。これらのコネクタｂと雑音吸収装置ａとは、それぞれが異なった使用目的或いは機能を有するから、被覆電線または筐体に取り付けられる場合にも互いに異なった部位に別々に取り付けられるのが一般的である。
【０００３】
【発明が解決しようとする課題】
しかしながら、上記図１３および図１４に示した従来の雑音吸収装置では、取り付けに際して結束帯で固定させたり、樹脂により一体成型により固定しようとするもので、必要以上に工数をかけ再利用をしにくくさせている。また、従来の雑音吸収装置にあっては、筐体の接合部に被覆電線を固定することと、雑音吸収装置を被覆電線に固定することが別々の工程となり、金型代等の必要以上の生産費が発生してしまう。また、従来の雑音吸収装置では防水機能を有さず、屋外での使用に不適当である。
【０００４】
本発明は、このような従来の問題を解決するものであり、電線に対し雑音吸収装置を完全固定し、完全防水機能を持たせ、筐体との接合に際しても一度の作業にて確実に固定することができる低価格の完全固定式及び完全雑音吸収装置、さらには完全防水機能をもたせたものをも提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、上記目的を達成するために、雑音吸収装置を、無電磁気石を内部に有し、被覆電線を締め付けるように固定できるようにしたことを要旨とする。無電磁気石は雑音吸収装置から取り外し可能な機構を持つようにすることができ、また、雑音吸収装置内部に突起部を設けて無電磁気石を収納するようにすることもできる。
【０００６】
これにより、装置を低コストで生産できるとともに、電線の太さが異なっていても、電線に対し装置を任意の位置で確実かつ容易に固定することができる。
【０００７】
また本発明は、雑音吸収装置自体をそのまま保持できる機能を有する雑音吸収装置により、筐体に被覆電線の弾力を利用し完全固定する。これにより振動、引張り等により雑音吸収装置の移動による抵抗値の変動に対する防御が確実に行える雑音吸収装置となる。また、完全防水機構に雑音吸収装置を備え、屋外での使用時における水滴等の障害に対する防御が確実に行なえる完全固定防水式雑音吸収装置をも実現することができる。そして、以上の２種類の機能を１基にまとめ、２機能品を一体化させることによって容積を大幅に減少させることもできる。
【０００８】
【発明の実施の形態】
本発明の請求項１に記載の発明は、長手方向に延びた貫通孔を有し外面にねじ部が形成された円筒構造の装置本体と、装置本体の中に収容固定された円筒構造の無電磁気石と、装置本体の中に前記無電磁気石と突き合う状態で収容され、被覆電線を通す通し孔を有する弾性を有する電線保持部材と、筒状構造を有し装置本体の端面部分において貫通孔に部分的に挿入され、前記電線保持部材を外部から包持するようにして当該電線保持部材に取り付けられた係止部材と、装置本体に対して、前記係止部材が取り付けられる端面側からねじ込まれ、係止部材を外周から内側へ向けて締め付け変形させる固定用ナット部材とを備えたものであり、固定用ナット部材の締め付け操作により係止部材が外周から内側へ変形し、さらに係止部材の変形により電線保持部材が外側から圧縮されて被覆電線に密着しシールすることにより完全防水と雑音吸収を実現するという作用を有する。
【０００９】
本発明の請求項２に記載の発明は、請求項１記載の雑音吸収装置において、無電磁気石は装置本体に対して着脱自在であるようにしたものであり、無電磁気石の取り替えにより雑音吸収装置の機能を種々変更することができるという作用を有する。
【００１０】
本発明の請求項３に記載の発明は、請求項１記載の雑音吸収装置において、装置本体の内部の無電磁気石装着部には無電磁気石に係合する突起部材を設けたものであり、無電磁気石を装置本体内に確実に収容固定するという作用を有する。
【００１１】
本発明の請求項４に記載の発明は、請求項３記載の雑音吸収装置において、突起部材は無電磁気石の端部に係合して当該無電磁気石を固定するようにしたものであり、無電磁気石を両端から保持し装置本体内に確実に収容固定するという作用を有する。
【００１２】
本発明の請求項５に記載の発明は、請求項３記載の雑音吸収装置において、突起部材は無電磁気石の胴体部外面に押圧接触して当該無電磁気石を固定するようにしたものであり、無電磁気石を中間部分で保持し装置本体内に確実に収容固定するという作用を有する。
【００１３】
本発明の請求項６に記載の発明は、請求項１記載の雑音吸収装置において、装置本体内には無電磁気石を複数個取り付け可能であり、雑音障害の状況に応じて取り付け個数を変化させることが可能であるようにしたものであり、無電磁気石を出し入れすることにより雑音障害の程度におうじた対策が簡単に採り得るという作用を有する。
【００１４】
本発明の請求項７に記載の発明は、請求項１記載の雑音吸収装置において、係止部材は異質な電線径においても完全な防水を実現するようにしたものであり、雑音吸収装置の応用範囲を拡大させることができるという作用を有する。
【００１５】
本発明の請求項８に記載の発明は、請求項１記載の雑音吸収装置において、被覆電線は弾力性を有しており、この弾力性を用いて被覆電線を筐体に完全固定するようにしたものであり、筐体への取り付けが確実に行なえるという作用を有する。
【００１６】
本発明の請求項９に記載の発明は、請求項１記載の雑音吸収装置において、係止部材は装置本体の端部から外部へ露出した部位の外周に装置本体の貫通孔よりも半径方向外方へ突出したリブを有し、ナット部材を装置本体にねじ込んで係止部材が装置本体の貫通孔に嵌入されることによりリブが半径方向内方へ変位せしめられ、電線保持部材を圧縮変形させるようにしたものであり、強力な圧着力で電線締め付け部の防水性を確保するという作用を有する。
【００１７】
本発明の請求項１０に記載の発明は、請求項１記載の雑音吸収装置において、係止部材はリブを有するようにしたものであり、ねじ込み操作によって係止部材の圧着力を生じさせるという作用を有する。
【００２４】
本発明の請求項１１に記載の発明は、請求項１記載の雑音吸収装置において、前記装置本体の被覆電線引き込み口の部分は、複数の電線固定部分を有し、該複数の電線固定部分は前記装置本体の端部において、装置本体寄りの部位の電線固定部分から装置本体から最も離れた部位の電線固定部分にかけて内径が順次小さくなるように設定され、前記電線固定部分は、端部が二股割れ構造に形成され、この二股に分離された辺部を締結部材により締め付け可能としたものであり、種々の電線の太さに自由に対応するとともに電線の締めつけを確実に行なえるという作用を有する。
【００２５】
本発明の請求項１２に記載の発明は、請求項１１記載の雑音吸収装置において、一の電線固定部分と、これに隣接する部分との間には切溝が形成され、この切溝部分で切離し可能としたものであり、種々の電線の太さに対応させるのに不要な部分を切り離すのみで対応することができるという作用を有する。
【００２６】
（実施の形態１）
以下、本発明の実施の形態を図面を参照して説明する。図１は本発明の第１の実施の形態に係る固定式及び完全防水雑音吸収装置の一部断面正面図であり、図２は上記雑音吸収装置の分解斜視図である。図１および図２において、１０は本実施の形態にかかる雑音吸収装置の中心的な部材である装置本体であり、長手方向ほぼ中央部分にフランジ１１を備えている。１２は装置本体１０の内部に装着される無電磁気石であり２個の無電磁気石１２ａ、１２ｂが装着される。１３は装置本体１０の内部に装着され被覆電線を保持する電線保持部材、１４は電線保持部材１３を包持して固定取り付けされる係止部材、１５は無電磁気石１２ｂ、電線保持部材１３、係止部材１４を装置本体１０内に装着固定するナット部材、１６は無電磁気石１２ａを装置本体１０内に装着固定するナット部材、１７はナット部材１７の締め付けを安定化させるスペーサである。
【００２７】
装置本体１０は、長手方向に延びた貫通孔１８を有しており、その外面にはフランジ１１を挟んで両側にねじ部１９が形成された筒状（この実施の形態では円筒状）構造を有する。ねじ部１９は後端側（図１中右端側）を組立ねじ部１９ａ、先端側を固定ねじ部１９ｂとする。無電磁気石１２は通し孔２０を有する円筒構造を有し、装置本体１０の貫通孔１８中に収容固定される。無電磁気石１２の通し孔２０内には被覆電線２１が挿通される。電線保持部材１３は、被覆電線２１を通す通し孔２１を有する筒状構造を有し、合成樹脂などの弾性材料により製作される。また、この電線保持部材１３は装置本体１０の中に無電磁気石１２と突き合う状態で収容される。
【００２８】
係止部材１４は、電線保持部材１３を外部から包持することができるよう筒状構造を有し、電線保持部材１３と装置本体１０の内壁との間の隙間に挿入される。この係止部材１４は、図２に示すように、比較的薄肉の筒状本体２２と、筒状本体２２の内壁から半径方向内方へ突出した係止片２３と、筒状本体２２の外壁から半径方向外方へ突出した摺動片（リブ）２４とを有している。係止片２３および摺動片２４は筒状本体２２と一体的になっており、係止部材１４は合成樹脂を一体成型することにより製作される。また、摺動片２４は係止部材１４の先端（図２に示す状態において左端を先端とする）部から所定の寸法後退した部位から立ち上がっており、その立ち上がり方は筒状本体２２の外周面から徐々に立ち上がる傾斜構造となっている。
【００２９】
ナット部材１５は、装置本体１０の組立ねじ部１９ａに対して、係止部材１４が取り付けられる端面側からねじ込まれ、ねじ込み作用により係止部材１４を装置本体１０の貫通孔１８に押し込んで雑音吸収装置を組み立てるのに使用される。他方ナット部材１６は、装置本体１０の固定ねじ部１９ｂに対して、ナット部材１５とは反対側の端面からねじ込まれ、雑音吸収装置自体および被覆電線２１を電子機器などの筐体に固定取り付けするのに使用される。
【００３０】
このような各部材の構成の下において、雑音吸収装置を構成するには、一例としては、図３に示すように、装置本体１０の貫通孔１８の内壁に予め無電磁気石１２（１２ａ、１２ｂの両方とも）を接着剤２５により固定しておき、各部材に被覆電線２１を通す。そして、装置本体１０の後端側から電線保持部材１３を貫通孔１８内へ挿入し、次いで係止部材１４を貫通孔１８内へ挿入する。係止部材１４は、その外周から半径方向外方へ突出した摺動片２４を有しているから、係止部材１４の先端のみが装置本体１０の貫通孔１８内に嵌入する。
【００３１】
そして、この状態においてナット部材１５が、装置本体１０の組立ねじ部１９ａに対して、係止部材１４が取り付けられる端面側からねじ込まれ、係止部材１４を装置本体１０の貫通孔１８に押し込むことにより摺動片２４の作用で外周から内側へ向けて圧縮変形させる。ナット部材１５の締め付け操作により係止部材１４が外周から内側へ変形すると、さらに係止部材１４の変形により電線保持部材１３が外側から圧縮されて被覆電線２１に密着しシールする。これにより、装置本体１０への無電磁気石１２、電線保持部材１３、係止部材１４の組み付けが行なわれ雑音吸収装置の組立てが完了する。
【００３２】
また、他方のナット１６は装置本体１０の固定ねじ部１９ｂに対して、ナット部材１５とは反対側の端面からねじ込まれる。雑音吸収装置を筐体に取り付ける必要がないときはナット部材１６は単に固定ねじ部１９ｂにねじ込まれるのみである。そして、ナット部材１５を緩めれば電線保持部材１３及び係止部材１４は装置本体１０の貫通孔１８から容易に外すことができ、また、無電磁気石１２も必要に応じて、片方の無電磁気石１２ａまたは１２ｂを取り外す（接着されている場合はこれを剥がせばよい）などを行なって雑音障害の状況に応じて取り付け個数を変化させることができる。
【００３３】
以上のように、被覆電線２１に対して雑音吸収装置の各部材を組み付け固定するのみで雑音吸収装置が構成されると同時に完全防水構成が確立される。
【００３４】
図４乃至図６は、第１の実施の形態において、装置本体１０とその内部に装着された無電磁気石１２との結合関係、すなわち取り付け固定状態の他の態様を表す図である。図４に示す例においては、装置本体１０の貫通孔１８内壁の無電磁気石１２の装着部分には、無電磁気石１２に係合する突起部材２６が設けられている。突起部材２６は無電磁気石１２の前後端部に係合する位置に設けられており、当該無電磁気石１２に係合してこれを固定する。この突起部材２６は貫通孔１８の内壁から半径方向内方へ突出して設けられた略三角形状の係合片から構成されている。この係合片は、例えばゴムなどの弾性部材から構成されており、無電磁気石１２を貫通孔１８に挿入したり取り出したりするときは撓み変形する。
【００３５】
図５に示す例においては、装置本体１０の貫通孔１８内壁の無電磁気石１２の装着部分には、無電磁気石１２に係合する突起部材２７が設けられている。この突起部材２７は、上記突起部材２６と同様、無電磁気石１２の前後端部に係合する位置に設けられており、当該無電磁気石１２に係合してこれを固定する。この突起部材２７は貫通孔１８の内壁から半径方向内方へ突出して設けられたブロック体から構成されている。このブロック体は、貫通孔１８の端面（出入口）側から奥側へかけて下り階段状（端面側が高く、奥側が低い）に形成された構造を有し、例えばゴムなどの弾性部材から構成されており、無電磁気石１２を貫通孔１８に挿入したり取り出したりするときは撓み変形し、且つブロック体の段部が無電磁気石１２の端面に当たってこれを固定支持する。
【００３６】
図６に示す例においては、装置本体１０の貫通孔１８内壁の無電磁気石１２の装着部分には、無電磁気石１２に係合する突起部材２８が設けられている。この突起部材２８は、上記突起部材２６、２７と異なり、無電磁気石１２の装着部分の長手方向中間部分に嵌入取り付けされ、無電磁気石１２の胴体部分に圧着することによりこれを固定する。この突起部材２８は無電磁気石１２の外周に圧着するリング体から構成されている。このリング体を装置本体１０の内壁と無電磁気石１２との間に嵌入するよう、無電磁気石１２の外周には円周方向に延びる溝が形成されている。また、リング体は、例えばゴムなどの弾性部材から構成されており、無電磁気石１２を貫通孔１８に挿入したり取り出したりするときは膨張、収縮し、且つリング体の断面形状が変形してこれを固定支持する。
【００３７】
さらに、この実施の形態に係る雑音吸収装置を電気機器などの筐体に取り付ける場合の態様について説明する。図７はこの第１の実施の形態に係る雑音吸収装置を筐体に結合した状態を示す透視側面図である。図７に示すように、ナット１６の装着側の装置本体１０部分を筐体２９の取付穴３０に挿入し、反対側からナット部材１６を固定ねじ部１９ｂにねじ込むことによりフランジ１１とナット部材１６との間に筐体２９の壁を挟み付け、雑音吸収装置を筐体２９に結合させることができる。このときナット部材と筐体２９の壁との間にスペーサ１７を介在させておくと、ナット部材１６の締め付け力が効率的に働き、ねじ締めを安定させることができる。このように、本実施の形態に係る雑音吸収装置は、それ自体が防水型の雑音吸収機能であり、且つ筐体２９に直接取り付け可能であって被覆電線を筐体２９に接続固定するコネクタとしての機能も有するから、コネクタ機能と雑音吸収機能とを併せ持った雑音吸収装置ということができる。
【００３８】
図８および図９は本発明の第２の実施の形態に係る分割式雑音吸収装置を示す図である。これらの図のうち、図８は雑音吸収装置を２つに分割して示す斜視図であり、図９は上記雑音吸収装置を２つに分割した状態を示す正面図である。図８および図９において、３１は本実施の形態にかかる雑音吸収装置の本体となるケースであり、ケース分割体３１ａとケース分割体３１ｂとに分割可能である。３２はケースに装着される無電磁気石であり、ケース３１が分割可能であるのと基を一にして、無電磁気石分割体３２ａと無電磁気石分割体３２ｂとに分割可能である。３３はケース分割体３２ａに設けられた電線抑え部である。
【００３９】
ケース３１は、合成樹脂を成型加工して製作され、長手方向へ一端から他端まで延び電線通し孔となる貫通孔３４を有し外形断面が略矩形状の筒状構造を有する。この貫通孔３４もまた、ケース３１が分割可能であるのと基を一にして、第１の貫通孔部３４ａと第２の貫通孔部３４ｂとに分かれており、ケース３１を組み立てることにより１つの貫通孔３４となる。無電磁気石３２は通し孔３５を有する筒状構造を有し、ケース分割体３１ａ、３１ｂのそれぞれの貫通孔部３４ａ、３４ｂ内に収容固定される。上記通し孔３５もまた、ケース３１が分割可能であるのと基を一にして、第１の通し孔部３５ａと第２の通し孔部３５ｂとに分かれており、ケース３１を組み立てることにより１つの通し孔３５となる。電線抑え部３３は、ケース分割体３１ａの内部において、このケース分割体３１ａの本体から第１の貫通孔部３４ａへ向けて半径方向内方へ延びている。
【００４０】
この実施の形態において、第１および第２のケース分割体３１ａ、３２ｂの内部の無電磁気石装着部には無電磁気石３２に係合する突起部材３６が設けられている。この突起部材３６は、無電磁気石３２の装着部分の長手方向中間部分に嵌入取り付けされ、無電磁気石３２の胴体部分に圧着することによりこれを固定する。この突起部材３６は無電磁気石３２の外周に圧着するリング体から構成されている。リング体もまた、ケース３１が分割可能であるのと基を一にして、半分づつに分割され各ケース分割体３１ａ、３１ｂに装着されている。この突起部材３６を装置本体１０の内壁と無電磁気石３２との間に嵌入するよう、無電磁気石３２の外周には円周方向に延びる溝が形成されている。また、突起部材３６は、例えばゴムなどの弾性部材から構成されており、無電磁気石３２ａ、３２ｂを貫通孔部３４ａ、３４ｂに装着したり取り外したりするときは膨張、収縮し、且つ突起部材３６の断面形状が変形してこれを固定支持する。なお、突起部材３６の変形例として、上記第１の実施の形態において説明した突起部材２６または２７と同じ構造および取り付け関係のものを採用することもできる。
【００４１】
さらにケース３１の外面には、当該ケース３１を周回する方向に延びる溝部３７が形成されている。この溝部３７はケース３１の外面よりも１段下がった窪み構造を有しており、雑音吸収装置を電気機器などの筐体に取り付けるときの取り付け部となる。図１０はこの第２の実施の形態に係る雑音吸収装置を筐体に結合した状態を示す透視側面図である。すなわち、図１０に示すように、筐体３８の取付穴３９に対して被覆電線４０に取り付けた雑音吸収装置を押し込むことにより合成樹脂製のケース３１が幾分変形し、取付穴３９に嵌まり溝部３７において雑音吸収装置を筐体３８に結合させることができる。このように、この第２の実施の形態に係る雑音吸収装置は、上記第１の実施の形態におけると同様、それ自体が防水型の雑音吸収機能であり、且つ筐体に直接取り付け可能であって被覆電線を筐体２９に接続固定するコネクタとしての機能も有するから、コネクタ機能と雑音吸収機能とを併せ持った雑音吸収装置ということができる。
【００４２】
図１１は本発明の第３の実施の形態に係る雑音吸収装置を一部分解して示す斜視図である。これらの図のうち、図１１は図１および図２に示された完全防水雑音吸収装置とほぼ同一の基本構成を有する雑音吸収装置を被覆電線に固定する方式として複数径ネジ式固定部の開口部をネジによって締め付け固定することができるように改良した例を示す斜視図である。すなわちこの雑音吸収装置は、その被覆電線引き込み口の部分に、それぞれ異なった内径に設定された電線固定部分４１、４２、４３を備えている。これらの電線固定部分４１、４２、４３は装置本体１０の端部において、装置本体１０寄りの部位から比較的大きな内径を有する第１の電線固定部分４１と、中位の内径を有する第２の電線固定部分４２と、装置本体１０から最も離れた部位にあり他の２つの電線固定部分４１、４２と比べると最も小さな内径を有する第３の電線固定部分４３とを連結させた構造になっている。電線固定部分４１、４２、４３の内径は、電線固定部分４１の側から電線固定部分４３へかけて階段状に小さくなっている。或いは電線固定部分４１、４２、４３の内径は、電線固定部分４１の側から電線固定部分４３へかけて次第に細くなる、所謂テーパが付けられた通路構造になっていてもよい。
【００４３】
電線固定部分４１、４２、４３は、それぞれ、図１１中において下端部分が二股割れ構造になっており、さらに下端部側面には二股に分離された辺部を通して延びるねじ通し孔４８、４９、５０が設けられている。なお、図１１中においては、ねじ通し孔５０には締め付け用のネジ５１がねじ込まれている。このネジ５１を締めたり緩めたりすることにより電線固定部分４３の内径を所定の範囲で調整することができ被覆電線を確実に固定することができる。他の電線固定部分４１、４２についても同様である。したがって、この事例では、比較的細い被覆電線を結合するため最も小さな内径を有する第３の電線固定部分４３を使っている例を表している。また、装置本体１０と第１の電線固定部分４１との境界部分、第１の電線固定部分４１と第２の電線固定部分４２との境界部分、および第２の電線固定部分４２と第３の電線固定部分４３との境界部分には、それらの部分で切離しが行なえるよう切溝５２、５３、５４が設けられている。そして、電線固定部分４１、４２、４３を、固定される電線の太さに応じて適当な切溝部分で装置本体１０から切り落とすことができるようになっている。上記のように電線固定部分４１、４２、４３を適当な切溝５２、５３、５４部分で装置本体１０から切り落とすことができるようにするため、電線固定部分４１、４２、４３はプラスチック材料で製作することが好ましい。
【００４４】
このような構成を採っているため、被覆電線の太さの違いにも対応でき、更にネジ５１で締め付けることによって固定強度を増すことができる。無電磁石は図２と同様の方式で、装置本体１０の内部に収容固定される。このように、この第３の実施の形態に係る雑音吸収装置は、上記第１の実施の形態におけると同様、それ自体が雑音吸収機能を有しており、被覆電線を接続固定するコネクタとしての機能も有するから、コネクタ機能と雑音吸収機能とを併せ持った雑音吸収装置ということができる。
【００４５】
図１２は図１１に示した電線固定構造を持った、本発明の第４の実施の形態に係る接続切替装置保護ケースおよびそれに類するケースを示す斜視図である。この接続切替装置保護ケース６０は、被覆電線引き込み口の内部に無電磁石を収容する構造を有しており、またこの形態も上記図７と同様の被覆電線固定方式の構造を持っている。そして、被覆電線引き込み口の部分は、上記第３の実施の形態におけると同様、それぞれ異なった内径に設定された電線固定部分４５、４６、４７を備えている。これらの電線固定部分４５、４６、４７はケース本体６１の被覆電線引き込み口の部分において、ケース本体６１寄りの部位から比較的大きな内径を有する第１の電線固定部分４５と、中位の内径を有する第２の電線固定部分４６と、ケース本体６１から最も離れた部位にあり他の２つの電線固定部分４５、４６と比べると最も小さな内径を有する第３の電線固定部分４７とを連結させた構造になっている。電線固定部分４５、４６、４７の内径は、電線固定部分４５の側から電線固定部分４７へかけて階段状に小さくなっている。或いは電線固定部分４５、４６、４７の内径は、電線固定部分４５の側から電線固定部分４７へかけて次第に細くなる、所謂テーパが付けられた通路構造になっていてもよい。
【００４６】
さらに、電線固定部分４５、４６、４７は、それぞれ、図１１中において下端部分が二股割れ構造になっており、さらに下端部側面には二股に分離された辺部を通して延びるねじ通し孔６２、６３、６４が設けられている。なお、図１１中においては、ねじ通し孔６４には締め付け用のネジ６５がねじ込まれている。このネジ６５を締めたり緩めたりすることにより電線固定部分４７の内径を所定の範囲で調整することができ被覆電線を確実に固定することができる。他の電線固定部分４５、４６についても同様である。したがって、この事例では、比較的細い被覆電線を結合するため最も小さな内径を有する第３の電線固定部分４７を使っている例を表している。また、ケース本体６１と第１の電線固定部分４５との境界部分、第１の電線固定部分４５と第２の電線固定部分４６との境界部分、および第２の電線固定部分４６と第３の電線固定部分４７との境界部分には、それらの部分で切離しが行なえるよう切溝６６、６７、６８が設けられている。そして、電線固定部分４５、４６、４７を、固定される電線の太さに応じて適当な切溝部分でケース本体６１から切り落とすことができるようになっている。上記のように電線固定部分４５、４６、４７を適当な切溝６６、６７、６８部分でケース本体６１から切り落とすことができるようにするため、電線固定部分４５、４６、４７はプラスチック材料で製作することが好ましい。
【００４７】
このような構成を採っているため、接続切替装置保護ケース６０に接続される被覆電線の太さの違いにも対応でき、更にネジ６５で締め付けることによって固定強度を増すことができる。無電磁石は図２と同様の方式で、ケース本体６１の内部に収容固定される。
【００４８】
【発明の効果】
本発明は、上記実施の形態から明らかなように、雑音吸収装置を、無電磁気石を内部に有し、被覆電線を締め付けるように固定できるようにしたことを要旨とする。無電磁気石は雑音吸収装置から取り外し可能な機構を持つようにすることができ、また、雑音吸収装置内部に突起部を設けて無電磁気石を収納するようにすることもできる。
【００４９】
これにより、装置を低コストで生産できるとともに、電線の太さが異なっていても、電線に対し装置を任意の位置で確実かつ容易に固定することができる。
【００５０】
また本発明は、雑音吸収装置自体をそのまま保持できる機能を有する雑音吸収装置により、筐体に被覆電線の弾力を利用し完全固定する。
【００５１】
これにより振動、引張り等により雑音吸収装置の移動による抵抗値の変動に対する防御が確実に行える雑音吸収装置となる。また、完全防水機構に雑音吸収装置を備え、屋外での使用時における水滴等の障害に対する防御が確実に行なえる完全固定防水式雑音吸収装置も実現するものである。そして、以上の２種類の機能を１基にまとめ、２機能品を一体化させることによって容積を大幅に減少させることもできる。
【００５２】
また、次のような効果も得られる。
１）固定用の装置本体と無電磁気石の一体化により個別の作業が不要となり、時間および作業工程が簡素化されコストの削減を図ることができる。
２）無電磁気石の固定のために別途の金型を製作する必要画なく製品製造コストが低く抑えられる。
３）筐体から被覆電線にかけての周辺に多種類の部品をしようする必要がなく、筐体・被覆電線結合部周辺を簡素化することができる。
４）筐体うちのつの機能部分を１つの機能部分にまとめることができ筐体の小型化を図ることができる。
５）防水または完全固定をしながらも、無電磁気石の取り外し可能機構により多種の雑音に対して適切な無電磁気石を使用することができる。
６）完全防水機能を有するため、雑音吸収装置を屋外で使用することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態に係る固定式及び完全防水雑音吸収装置の一部断面正面図
【図２】前記第１の実施の形態に係る雑音吸収装置の分解斜視図
【図３】前記第１の実施の形態において装置本体へ無電磁気石を接着剤により固定取り付けした状態を示す斜視図
【図４】前記第１の実施の形態において装置本体とその内部に装着された無電磁気石とを三角形状の係合片から構成された突起部材により固定する態様を示す斜視図
【図５】前記第１の実施の形態において装置本体とその内部に装着された無電磁気石とを段付のブロック体から構成された突起部材により固定する態様を示す斜視図
【図６】前記第１の実施の形態において装置本体とその内部に装着された無電磁気石とを無電磁気石の胴体部分に圧着するリング体から構成された突起部材により固定する態様を示す斜視図
【図７】前記第１の実施の形態に係る雑音吸収装置を筐体に結合した状態を示す透視側面図
【図８】本発明の第２の実施の形態に係る分割式及び完全防水雑音吸収装置を２つに分割して示す斜視図
【図９】前記第２の実施の形態に係る分割式及び完全防水雑音吸収装置を２つに分割して示す側面図
【図１０】前記第２の実施の形態に係る雑音吸収装置を筐体に結合した状態を示す透視側面図
【図１１】本発明の第３の実施の形態に係る雑音吸収装置を一部分解して示す斜視図
【図１２】前記第４の実施の形態に係る接続切替装置保護ケースおよびそれに類するケースを示す斜視図
【図１３】従来例における雑音吸収装置を被覆電線に取り付け、また被覆電線を筐体にコネクタにより結合した状態の斜視図
【図１４】従来例における雑音吸収装置の一構造例を示す斜視図
【符号の説明】
１０装置本体
１１フランジ
１２無電磁気石
１３電線保持部材
１４係止部材
１５、１６ナット部材
１７スペーサ
１８貫通孔
１９ねじ部
２０通し孔
２１被覆電線
２２筒状本体
２３係止片
２４摺動片
２５接着剤
２６、２７、２８突起部材
２９、３８筐体
３１ケース
３２無電磁気石
３３電線抑え部
３４貫通孔３４
３５通し孔
３６突起部材
４１、４２、４３、４５、４６、４７電線固定部分
４８、４９、５０、６２、６３、６４ねじ通し孔
５１、６５ネジ
５２、５３、５４、６６、６７、６８切溝
６０接続切替装置保護ケース
６１ケース本体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a low-cost fully-fixed type and a complete noise-absorbing device that can completely fix a noise-absorbing device to an electric wire and can be securely fixed in one operation even when joined to a housing. Some are completely waterproof.
[0002]
[Prior art]
Conventionally, there is a connector b as shown in FIG. 13 as a component for fixing a covered electric wire to a housing, and the same as a noise absorbing device in which a magnetic material is disposed inside to protect the covered electric wire from noise disturbance. A noise absorber a with a cover as shown in FIG. 13 or a cylindrical noise absorber as shown in FIG. 14 is used. Other types of noise absorbers include, for example, a cylindrical one divided into two parts, a cylindrical one with a resin box attached, and a cylindrical one divided into two parts with a damage prevention box attached In addition, there are known those obtained by integrally molding a cylindrical one and a coated electric wire with a resin. Since these connectors b and noise absorbers a have different usage purposes or functions, they are generally attached separately to different parts even when attached to a covered electric wire or a housing. .
[0003]
[Problems to be solved by the invention]
However, in the conventional noise absorbing device shown in FIGS. 13 and 14, it is fixed with a cable tie at the time of installation or is fixed by integral molding with a resin, and it is difficult to reuse by requiring more man-hours than necessary. I am letting. In addition, in the conventional noise absorber, fixing the covered electric wire to the joint portion of the housing and fixing the noise absorbing device to the covered electric wire are separate processes, and the mold cost etc. is more than necessary. Production costs are incurred. In addition, the conventional noise absorbing device does not have a waterproof function and is not suitable for outdoor use.
[0004]
The present invention solves such a conventional problem. The noise absorbing device is completely fixed to the electric wire, has a complete waterproof function, and is securely fixed by one operation even when it is joined to the housing. It is an object of the present invention to provide a low-cost fully-fixed and completely noise-absorbing device that can be used, and a device that has a completely waterproof function.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the gist of the present invention is that the noise absorber can be fixed so as to have an electromagnetic stone inside and to tighten a covered electric wire. The electromagnetic stone can have a mechanism that can be removed from the noise absorber, and a projection can be provided inside the noise absorber to accommodate the electromagnetic stone.
[0006]
Thereby, while being able to produce an apparatus at low cost, even if the thickness of an electric wire differs, an apparatus can be reliably and easily fixed to an electric wire in arbitrary positions.
[0007]
Further, according to the present invention, the noise absorbing device having a function of holding the noise absorbing device itself as it is is completely fixed to the casing by using the elasticity of the covered electric wire. As a result, the noise absorbing device can reliably protect against fluctuations in resistance due to movement of the noise absorbing device due to vibration, tension, and the like. In addition, it is possible to realize a completely fixed waterproof noise absorbing device that is equipped with a noise absorbing device in a completely waterproof mechanism and that can reliably protect against obstacles such as water droplets when used outdoors. The volume can be greatly reduced by combining the above two types of functions into one unit and integrating the two-function products.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a cylindrical apparatus main body having a through-hole extending in the longitudinal direction and having a threaded portion formed on the outer surface, and a cylindrical structure that is housed and fixed in the apparatus main body. An electromagnetic stone, an electric wire holding member that is accommodated in the apparatus main body in a state of abutting against the electromagnetic magnetic stone, and has a through hole for passing a covered electric wire, and has a cylindrical structure and penetrates at an end surface portion of the apparatus main body A locking member that is partially inserted into the hole and that is attached to the wire holding member so as to hold the wire holding member from the outside, and an end surface side where the locking member is attached to the apparatus main body A fixing nut member that is screwed and tightens and deforms the locking member from the outer periphery to the inner side. The locking member is deformed from the outer periphery to the inner side by the tightening operation of the fixing nut member. For deformation of members Ri has the effect of wire holding members to realize the waterproof and noise absorption by close contact with the seal to the coated electric wire is compressed from the outside.
[0009]
The invention according to claim 2 of the present invention is the noise absorbing device according to claim 1, wherein the electromagnetic stone is detachable from the device main body, and noise absorption is achieved by replacing the electromagnetic stone. The function of the apparatus can be changed variously.
[0010]
The invention according to claim 3 of the present invention is the noise absorbing device according to claim 1, wherein the electromagnet mounting portion inside the apparatus body is provided with a protruding member that engages the electromagnet. It has the effect of securely accommodating and fixing the electroless magnetic stone in the apparatus main body.
[0011]
The invention according to claim 4 of the present invention is the noise absorbing device according to claim 3, wherein the protruding member is engaged with the end portion of the electromagnetic stone to fix the electromagnetic stone. It has the effect of holding the electroless magnetic stone from both ends and securely accommodating and fixing it in the apparatus main body.
[0012]
According to a fifth aspect of the present invention, in the noise absorbing device according to the third aspect, the projecting member presses and contacts the outer surface of the body portion of the electroless stone to fix the electromagnet. The electroless magnetic stone is held in the middle part and has an effect of being surely accommodated and fixed in the apparatus main body.
[0013]
According to a sixth aspect of the present invention, in the noise absorbing device according to the first aspect, a plurality of electromagnetic stones can be mounted in the device main body, and the number of mounting is changed in accordance with the state of noise disturbance. It is possible to easily take measures according to the degree of noise interference by inserting and removing electromagnetism stones.
[0014]
According to a seventh aspect of the present invention, in the noise absorbing device according to the first aspect, the locking member realizes complete waterproofing even with different wire diameters. It has the effect that the range can be expanded.
[0015]
According to an eighth aspect of the present invention, in the noise absorbing device according to the first aspect, the covered electric wire has elasticity, and the covered electric wire is completely fixed to the housing using this elasticity. Thus, it has an effect that it can be reliably attached to the housing.
[0016]
According to a ninth aspect of the present invention, in the noise absorbing device according to the first aspect, the locking member is located on the outer periphery of the portion exposed to the outside from the end portion of the device main body, and is radially outward from the through hole of the device main body. A rib projecting in the direction, and the nut member is screwed into the apparatus main body, and the locking member is fitted into the through hole of the apparatus main body, whereby the rib is displaced inward in the radial direction, and the electric wire holding member is compressed and deformed. Thus, it has the effect of securing the waterproof property of the electric wire tightening portion with a strong crimping force.
[0017]
According to a tenth aspect of the present invention, in the noise absorbing device according to the first aspect, the locking member has a rib, and an operation of generating a pressure-bonding force of the locking member by a screwing operation. Have
[0024]
Claim 1 of the present invention 1 The invention described in claim 1 In the listed noise absorber, The portion of the device main body with the covered electric wire inlet has a plurality of wire fixing portions, and the plurality of wire fixing portions are located at the end of the device main body from the wire fixing portion near the device main body from the device main body. It is set so that the inner diameter gradually decreases over the wire fixing part of the distant part, The wire fixing part is formed with a bifurcated structure at the end, and the side part separated into the bifurcated part can be tightened with a fastening member. It has the effect | action that can be performed reliably.
[0025]
Claim 1 of the present invention 2 The invention described in claim 1 1 In the described noise absorbing device, a kerf is formed between one electric wire fixing part and a part adjacent to the electric wire fixing part, and the grooving part can be separated. Is, It has the effect that it is possible to cope with it only by cutting off an unnecessary part to correspond to the thickness of various electric wires.
[0026]
(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional front view of a fixed and completely waterproof noise absorber according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of the noise absorber. 1 and 2, reference numeral 10 denotes an apparatus main body which is a central member of the noise absorbing apparatus according to the present embodiment, and is provided with a flange 11 at a substantially central portion in the longitudinal direction. Reference numeral 12 denotes a non-electromagnetic stone mounted inside the apparatus main body 10, and two electro-magnetic stones 12a and 12b are mounted. 13 is an electric wire holding member that is mounted inside the apparatus main body 10 and holds the covered electric wire, 14 is an engaging member that holds the electric wire holding member 13 and is fixedly attached thereto, 15 is an electromagnetic stone 12b, an electric wire holding member 13, A nut member for mounting and fixing the locking member 14 in the apparatus main body 10, a nut member 16 for mounting and fixing the electroless magnetic stone 12 a in the apparatus main body 10, and a spacer 17 for stabilizing the tightening of the nut member 17.
[0027]
The apparatus main body 10 has a through-hole 18 extending in the longitudinal direction, and has a cylindrical structure (cylindrical in this embodiment) in which screw portions 19 are formed on both sides of the outer surface of the apparatus body 10 with the flange 11 in between. Have. The screw part 19 has a rear end side (right end side in FIG. 1) as an assembly screw part 19a and a front end side as a fixing screw part 19b. The electroless magnetic stone 12 has a cylindrical structure having a through hole 20 and is housed and fixed in the through hole 18 of the apparatus main body 10. A covered electric wire 21 is inserted into the through hole 20 of the electroless magnetic stone 12. The electric wire holding member 13 has a cylindrical structure having a through hole 21 through which the covered electric wire 21 passes, and is made of an elastic material such as a synthetic resin. Further, the electric wire holding member 13 is accommodated in the apparatus main body 10 so as to face the electroless magnetic stone 12.
[0028]
The locking member 14 has a cylindrical structure so that the electric wire holding member 13 can be held from the outside, and is inserted into a gap between the electric wire holding member 13 and the inner wall of the apparatus main body 10. As shown in FIG. 2, the locking member 14 includes a relatively thin cylindrical main body 22, a locking piece 23 protruding radially inward from the inner wall of the cylindrical main body 22, and the outer wall of the cylindrical main body 22. And a sliding piece (rib) 24 that protrudes radially outward. The locking piece 23 and the sliding piece 24 are integrated with the cylindrical main body 22, and the locking member 14 is manufactured by integrally molding synthetic resin. The sliding piece 24 rises from a portion retracted by a predetermined dimension from the distal end (the left end is the distal end in the state shown in FIG. 2) of the locking member 14, and the rising direction is the outer peripheral surface of the cylindrical main body 22. It has an inclined structure that gradually rises from.
[0029]
The nut member 15 is screwed into the assembly screw portion 19a of the apparatus main body 10 from the end surface side to which the locking member 14 is attached, and the locking member 14 is pushed into the through hole 18 of the apparatus main body 10 by the screwing action to absorb noise. Used to assemble the device. On the other hand, the nut member 16 is screwed into the fixing screw portion 19b of the apparatus main body 10 from the end surface opposite to the nut member 15, and the noise absorbing device itself and the covered electric wire 21 are fixedly attached to a housing such as an electronic device. Used to.
[0030]
In order to configure the noise absorbing device under the configuration of each member as described above, as an example, as shown in FIG. 3, the electromagnetic stone 12 (12 a, 12 b) is previously formed on the inner wall of the through hole 18 of the device body 10. Both are fixed with an adhesive 25, and the covered electric wire 21 is passed through each member. Then, the wire holding member 13 is inserted into the through hole 18 from the rear end side of the apparatus main body 10, and then the locking member 14 is inserted into the through hole 18. Since the locking member 14 has a sliding piece 24 protruding radially outward from the outer periphery thereof, only the tip of the locking member 14 is fitted into the through hole 18 of the apparatus main body 10.
[0031]
In this state, the nut member 15 is screwed into the assembly screw portion 19a of the apparatus main body 10 from the end face side to which the locking member 14 is attached, and the locking member 14 is pushed into the through hole 18 of the apparatus main body 10. Accordingly, the sliding piece 24 compresses and deforms from the outer periphery toward the inside. When the locking member 14 is deformed from the outer periphery to the inner side by the tightening operation of the nut member 15, the electric wire holding member 13 is further compressed from the outer side due to the deformation of the locking member 14, and is closely attached to the covered electric wire 21 and sealed. Thereby, the assembly of the noise absorbing device is completed by assembling the electroless magnetic stone 12, the electric wire holding member 13, and the locking member 14 to the apparatus main body 10.
[0032]
The other nut 16 is screwed into the fixing screw portion 19 b of the apparatus main body 10 from the end surface opposite to the nut member 15. When it is not necessary to attach the noise absorbing device to the housing, the nut member 16 is simply screwed into the fixing screw portion 19b. Then, if the nut member 15 is loosened, the wire holding member 13 and the locking member 14 can be easily removed from the through hole 18 of the apparatus main body 10, and the electromagnetic stone 12 can also be one of the electromagnetic components if necessary. By removing the stone 12a or 12b (if it is bonded, it may be peeled off) and the like, the number of attachments can be changed according to the state of the noise disturbance.
[0033]
As described above, the noise absorbing device is configured only by assembling and fixing each member of the noise absorbing device to the covered electric wire 21, and at the same time, a complete waterproof configuration is established.
[0034]
FIGS. 4 to 6 are views showing the coupling relationship between the apparatus main body 10 and the electroless stone 12 mounted therein, that is, another aspect of the attachment and fixing state in the first embodiment. In the example shown in FIG. 4, a projecting member 26 that engages the electroless magnetic stone 12 is provided on the mounting portion of the electroless magnetic stone 12 on the inner wall of the through hole 18 of the apparatus body 10. The projecting member 26 is provided at a position where it engages with the front and rear ends of the electroless magnetic stone 12, and engages and fixes the electroless magnetic stone 12. The projecting member 26 is composed of a substantially triangular engaging piece that protrudes radially inward from the inner wall of the through hole 18. The engaging piece is made of an elastic member such as rubber, for example, and is bent and deformed when the electromagnetic stone 12 is inserted into or removed from the through hole 18.
[0035]
In the example shown in FIG. 5, a projecting member 27 that engages the electroless magnetic stone 12 is provided on the mounting portion of the electroless magnetic stone 12 on the inner wall of the through hole 18 of the apparatus main body 10. Similar to the projection member 26, the projection member 27 is provided at a position where it engages with the front and rear end portions of the electroless magnetic stone 12, and engages and fixes the electroless magnetic stone 12. The projecting member 27 is composed of a block body that is provided so as to project radially inward from the inner wall of the through hole 18. This block body has a structure formed in a descending step shape (the end face side is high and the back side is low) from the end face (entrance / exit) side to the back side of the through hole 18, and is composed of an elastic member such as rubber, for example. When the electromagnetic stone 12 is inserted into or removed from the through hole 18, the electromagnetic stone 12 is bent and deformed, and the stepped portion of the block body abuts against the end surface of the electromagnetic stone 12 to fix and support it.
[0036]
In the example shown in FIG. 6, a projecting member 28 that engages the electroless magnetic stone 12 is provided on the mounting portion of the electroless magnetic stone 12 on the inner wall of the through hole 18 of the apparatus main body 10. Unlike the projection members 26 and 27, the projection member 28 is fitted and attached to the middle portion in the longitudinal direction of the mounting portion of the electromagnetism stone 12, and is fixed by being crimped to the body portion of the electromagnetism stone 12. The projecting member 28 is composed of a ring body that is crimped to the outer periphery of the electroless magnetic stone 12. A groove extending in the circumferential direction is formed on the outer periphery of the electroless magnetic stone 12 so that the ring body is fitted between the inner wall of the apparatus main body 10 and the electroless magnetic stone 12. In addition, the ring body is made of an elastic member such as rubber, for example. When the electromagnetic stone 12 is inserted into or removed from the through hole 18, the ring body expands and contracts, and the cross-sectional shape of the ring body is deformed. This is fixedly supported.
[0037]
Furthermore, the aspect in the case of attaching the noise absorber which concerns on this embodiment to housing | casings, such as an electric equipment, is demonstrated. FIG. 7 is a see-through side view showing a state in which the noise absorbing device according to the first embodiment is coupled to the housing. As shown in FIG. 7, the apparatus main body 10 portion on the mounting side of the nut 16 is inserted into the mounting hole 30 of the housing 29, and the nut member 16 is screwed into the fixing screw portion 19 b from the opposite side, whereby the flange 11 and the nut member 16. The wall of the housing 29 can be sandwiched between the noise absorbing device and the housing 29. At this time, if the spacer 17 is interposed between the nut member and the wall of the housing 29, the tightening force of the nut member 16 works efficiently and the screw tightening can be stabilized. As described above, the noise absorbing device according to the present embodiment itself has a waterproof noise absorbing function, and can be directly attached to the housing 29, and is a connector for connecting and fixing the covered electric wire to the housing 29. Therefore, it can be said to be a noise absorbing device having both a connector function and a noise absorbing function.
[0038]
FIG. 8 and FIG. 9 are diagrams showing a split noise absorber according to the second embodiment of the present invention. Among these drawings, FIG. 8 is a perspective view showing the noise absorbing device divided into two parts, and FIG. 9 is a front view showing a state where the noise absorbing device is divided into two parts. 8 and 9, reference numeral 31 denotes a case serving as a main body of the noise absorbing device according to the present embodiment, which can be divided into a case divided body 31 a and a case divided body 31 b. Reference numeral 32 denotes a non-electromagnetic stone mounted on the case. The non-electromagnetic stone division body 32a and the non-electromagnetic stone division body 32b can be divided based on the fact that the case 31 can be divided. 33 is an electric wire holding part provided in the case division body 32a.
[0039]
The case 31 is manufactured by molding synthetic resin, has a through-hole 34 that extends from one end to the other end in the longitudinal direction and serves as a wire passage hole, and has a cylindrical structure with a substantially rectangular outer cross section. The through-hole 34 is also divided into a first through-hole portion 34 a and a second through-hole portion 34 b based on the fact that the case 31 can be divided. One through hole 34 is formed. The electroless magnetic stone 32 has a cylindrical structure having a through-hole 35, and is accommodated and fixed in the through-hole portions 34a and 34b of the case division bodies 31a and 31b. The through-hole 35 is also divided into a first through-hole portion 35a and a second through-hole portion 35b based on the fact that the case 31 can be divided. One through hole 35 is formed. The wire holding portion 33 extends radially inward from the main body of the case divided body 31a toward the first through hole 34a inside the case divided body 31a.
[0040]
In this embodiment, a projecting member 36 that engages the electroless magnetic stone 32 is provided at the electromagnet mounting part inside the first and second case division bodies 31a and 32b. The projecting member 36 is fitted and attached to an intermediate portion in the longitudinal direction of the mounting portion of the electroless magnetic stone 32, and is fixed by being crimped to the body portion of the electroless magnetic stone 32. The projecting member 36 is composed of a ring body that is crimped to the outer periphery of the electroless magnetic stone 32. The ring body is also divided into halves, with the case 31 being separable and based on the fact that the case 31 can be divided, and is attached to the case divided bodies 31a and 31b. A groove extending in the circumferential direction is formed on the outer periphery of the electroless magnetic stone 32 so that the projecting member 36 is fitted between the inner wall of the apparatus main body 10 and the electroless magnetic stone 32. The projecting member 36 is made of an elastic member such as rubber, for example. When the electromagnets 32a and 32b are attached to or removed from the through-hole portions 34a and 34b, the projecting member 36 expands and contracts. The cross-sectional shape is deformed and fixedly supported. As a modification of the protruding member 36, the same structure and attachment relationship as the protruding member 26 or 27 described in the first embodiment can be adopted.
[0041]
Further, a groove portion 37 extending in the direction of circling the case 31 is formed on the outer surface of the case 31. The groove portion 37 has a hollow structure that is one step lower than the outer surface of the case 31, and serves as an attachment portion when the noise absorbing device is attached to a housing such as an electric device. FIG. 10 is a perspective side view showing a state in which the noise absorbing device according to the second embodiment is coupled to the housing. That is, as shown in FIG. 10, when the noise absorbing device attached to the covered electric wire 40 is pushed into the attachment hole 39 of the casing 38, the synthetic resin case 31 is somewhat deformed and fits into the attachment hole 39. The noise absorbing device can be coupled to the housing 38 in the groove 37. As described above, the noise absorbing device according to the second embodiment itself has a waterproof noise absorbing function and can be directly attached to the housing as in the first embodiment. In addition, since it has a function as a connector for connecting and fixing the covered electric wire to the housing 29, it can be said to be a noise absorbing device having both a connector function and a noise absorbing function.
[0042]
FIG. 11 is a partially exploded perspective view showing a noise absorbing device according to the third embodiment of the present invention. Among these drawings, FIG. 11 shows an opening of a multi-diameter screw type fixing portion as a system for fixing a noise absorbing device having substantially the same basic configuration as the completely waterproof noise absorbing device shown in FIGS. 1 and 2 to a covered electric wire. It is a perspective view which shows the example improved so that a part could be clamp | tightened and fixed with a screw | thread. That is, this noise absorbing device is provided with wire fixing portions 41, 42, 43 set at different inner diameters at the portion of the covered wire drawing-in port. These wire fixing portions 41, 42, and 43 are, at the end of the apparatus main body 10, a first electric wire fixing portion 41 having a relatively large inner diameter from a portion near the apparatus main body 10 and a second inner diameter having a middle inner diameter. It has a structure in which the wire fixing portion 42 is connected to the third wire fixing portion 43 which is located farthest from the apparatus main body 10 and has the smallest inner diameter as compared with the other two wire fixing portions 41 and 42. Yes. The inner diameters of the wire fixing portions 41, 42, 43 are reduced stepwise from the wire fixing portion 41 side to the wire fixing portion 43. Alternatively, the wire fixing portions 41, 42, and 43 may have a so-called tapered passage structure in which the inner diameter gradually decreases from the wire fixing portion 41 side to the wire fixing portion 43.
[0043]
Each of the electric wire fixing portions 41, 42, 43 has a bifurcated structure in the lower end portion in FIG. 11, and further, screw holes 48, 49, 50 extending through the side portions separated into the bifurcated portions on the side surfaces of the lower end portion. Is provided. In FIG. 11, a screw 51 for fastening is screwed into the screw hole 50. By tightening or loosening the screw 51, the inner diameter of the electric wire fixing portion 43 can be adjusted within a predetermined range, and the covered electric wire can be fixed securely. The same applies to the other wire fixing portions 41 and 42. Therefore, in this case, an example is shown in which the third wire fixing portion 43 having the smallest inner diameter is used to connect the relatively thin covered wires. Further, a boundary portion between the apparatus main body 10 and the first electric wire fixing portion 41, a boundary portion between the first electric wire fixing portion 41 and the second electric wire fixing portion 42, and the second electric wire fixing portion 42 and the third electric wire fixing portion 42. Grooves 52, 53, 54 are provided at the boundary portion with the wire fixing portion 43 so that separation can be performed at those portions. Then, the wire fixing portions 41, 42, 43 can be cut off from the apparatus main body 10 at an appropriate groove portion according to the thickness of the wire to be fixed. As described above, the wire fixing portions 41, 42, 43 are made of a plastic material so that the appropriate cutting grooves 52, 53, 54 can be cut off from the apparatus main body 10. It is preferable to do.
[0044]
Since such a configuration is adopted, it is possible to cope with the difference in the thickness of the covered electric wire, and the fastening strength can be increased by tightening with the screw 51. The electroless magnet is housed and fixed inside the apparatus main body 10 in the same manner as in FIG. As described above, the noise absorbing device according to the third embodiment itself has a noise absorbing function as in the first embodiment, and serves as a connector for connecting and fixing the covered electric wire. Since it also has a function, it can be said to be a noise absorbing device having both a connector function and a noise absorbing function.
[0045]
FIG. 12 is a perspective view showing a connection switching device protective case and a similar case according to the fourth embodiment of the present invention having the wire fixing structure shown in FIG. The connection switching device protective case 60 has a structure in which an electroless magnet is accommodated in a covered wire drawing port, and this form also has a structure of a covered wire fixing method similar to that of FIG. And the part of the covered wire drawing-in opening is provided with wire fixing portions 45, 46, 47 set to different inner diameters as in the third embodiment. These wire fixing portions 45, 46, and 47 have a first inner wire fixing portion 45 having a relatively large inner diameter from a portion near the case main body 61 and a medium inner diameter at a portion of the covered electric wire drawing port of the case main body 61. The second electric wire fixing portion 46 having the third electric wire fixing portion 47 which is located farthest from the case body 61 and has the smallest inner diameter as compared with the other two electric wire fixing portions 45 and 46 is connected. It has a structure. The inner diameters of the wire fixing portions 45, 46, 47 are reduced stepwise from the wire fixing portion 45 side to the wire fixing portion 47. Alternatively, the inner diameter of the wire fixing portions 45, 46, 47 may be a so-called tapered passage structure that gradually decreases from the wire fixing portion 45 side to the wire fixing portion 47.
[0046]
Furthermore, the electric wire fixing portions 45, 46, and 47 have a bifurcated structure at the lower end portion in FIG. 11, respectively, and further screw-through holes 62 and 63 extending through the side portions separated into the bifurcated portions on the side surfaces of the lower end portion. , 64 are provided. In FIG. 11, a screw 65 for fastening is screwed into the screw hole 64. By tightening or loosening the screw 65, the inner diameter of the wire fixing portion 47 can be adjusted within a predetermined range, and the covered wire can be securely fixed. The same applies to the other electric wire fixing portions 45 and 46. Therefore, in this case, an example is shown in which the third wire fixing portion 47 having the smallest inner diameter is used to connect relatively thin covered wires. Further, a boundary portion between the case body 61 and the first electric wire fixing portion 45, a boundary portion between the first electric wire fixing portion 45 and the second electric wire fixing portion 46, and the second electric wire fixing portion 46 and the third electric wire fixing portion 46. Grooves 66, 67, and 68 are provided in the boundary portion with the wire fixing portion 47 so that the portions can be separated. And the electric wire fixing | fixed part 45,46,47 can be cut off from the case main body 61 by a suitable groove part according to the thickness of the electric wire fixed. As described above, the wire fixing portions 45, 46, and 47 are made of a plastic material so that the appropriate cutting grooves 66, 67, and 68 can be cut off from the case main body 61. It is preferable to do.
[0047]
Since such a configuration is adopted, it is possible to cope with the difference in the thickness of the covered electric wire connected to the connection switching device protection case 60, and to further increase the fixing strength by tightening with the screw 65. The electroless magnet is housed and fixed inside the case body 61 in the same manner as in FIG.
[0048]
【The invention's effect】
As is apparent from the above embodiment, the gist of the present invention is that the noise absorbing device has an electroless magnetic stone inside and can be fixed so as to fasten the covered electric wire. The electromagnetic stone can have a mechanism that can be removed from the noise absorber, and a projection can be provided inside the noise absorber to accommodate the electromagnetic stone.
[0049]
Thereby, while being able to produce an apparatus at low cost, even if the thickness of an electric wire differs, an apparatus can be reliably and easily fixed to an electric wire in arbitrary positions.
[0050]
Further, according to the present invention, the noise absorbing device having a function of holding the noise absorbing device itself as it is is completely fixed to the casing by using the elasticity of the covered electric wire.
[0051]
As a result, the noise absorbing device can reliably protect against fluctuations in resistance due to movement of the noise absorbing device due to vibration, tension, and the like. Also, a completely fixed waterproof noise absorbing device that can be provided with a noise absorbing device in a completely waterproof mechanism and that can reliably protect against obstacles such as water droplets when used outdoors can be realized. The volume can be greatly reduced by combining the above two types of functions into one unit and integrating the two-function products.
[0052]
The following effects can also be obtained.
1) Integration of the fixing device main body and the electroless stone eliminates the need for individual work, simplifies the time and work process, and reduces costs.
2) Product manufacturing costs can be kept low without the need to make a separate mold for fixing the electroless magnetic stone.
3) There is no need to use various types of parts around the casing and the covered electric wire, and the periphery of the casing / covered electric wire coupling portion can be simplified.
4) One functional part of the casing can be combined into one functional part, and the casing can be downsized.
5) While being waterproof or completely fixed, the electromagnetic stone suitable for various noises can be used by the removable mechanism of the electromagnetic stone.
6) Since it has a complete waterproof function, the noise absorbing device can be used outdoors.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view of a fixed and completely waterproof noise absorbing device according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view of the noise absorber according to the first embodiment.
FIG. 3 is a perspective view showing a state in which an electromagnetic stone is fixedly attached to the apparatus main body with an adhesive in the first embodiment.
FIG. 4 is a perspective view showing a mode in which the apparatus main body and the electromagnetic stone mounted therein are fixed by a protruding member formed of a triangular engagement piece in the first embodiment.
FIG. 5 is a perspective view showing a mode in which the apparatus main body and the electromagnetic stone mounted therein are fixed by a projecting member constituted by a stepped block body in the first embodiment.
FIG. 6 is a perspective view showing an aspect in which the main body of the apparatus and the electroless magnetic stone mounted therein are fixed by a protruding member composed of a ring body that is crimped to a body portion of the electroless magnetic stone in the first embodiment. Figure
7 is a perspective side view showing a state in which the noise absorbing device according to the first embodiment is coupled to a housing. FIG.
FIG. 8 is a perspective view showing a split type and completely waterproof noise absorbing device according to a second embodiment of the present invention in two parts.
FIG. 9 is a side view showing the split type and complete waterproof noise absorbing device according to the second embodiment in two parts.
FIG. 10 is a perspective side view showing a state in which the noise absorbing device according to the second embodiment is coupled to a housing.
FIG. 11 is a partially exploded perspective view showing a noise absorbing device according to a third embodiment of the present invention.
FIG. 12 is a perspective view showing a connection switching device protective case according to the fourth embodiment and a case similar thereto.
FIG. 13 is a perspective view of a state in which a noise absorbing device in a conventional example is attached to a covered electric wire, and the covered electric wire is coupled to a housing by a connector.
FIG. 14 is a perspective view showing an example of the structure of a noise absorber in a conventional example.
[Explanation of symbols]
10 Device body
11 Flange
12 Electromagnetic stone
13 Electric wire holding member
14 Locking member
15, 16 Nut member
17 Spacer
18 Through hole
19 Screw part
20 through hole
21 Covered wire
22 Tubular body
23 Locking piece
24 sliding piece
25 Adhesive
26, 27, 28 Projection member
29, 38 housing
31 cases
32 Electromagnetic stone
33 Electric wire holding part
34 Through hole 34
35 through hole
36 Protruding member
41, 42, 43, 45, 46, 47 Wire fixing part
48, 49, 50, 62, 63, 64 Screw holes
51, 65 screws
52, 53, 54, 66, 67, 68
60 Connection switching device protective case
61 Case body

Claims

A cylindrical device main body having a through-hole extending in the longitudinal direction and having a threaded portion formed on the outer surface thereof, a cylindrical electromagnetic magnet housed and fixed in the device main body, and the electromagnetic field in the device main body An electric wire holding member that is accommodated in a state of facing a stone and has a through hole for passing a covered electric wire, and a tubular structure that is partially inserted into a through hole in an end surface portion of the apparatus body, and the electric wire holding member The locking member attached to the wire holding member so as to be held from the outside and the device main body are screwed in from the end surface side where the locking member is attached, and the locking member is directed from the outer periphery to the inner side. A fixing nut member that is tightened and deformed, and the locking member is deformed from the outer periphery to the inner side by the tightening operation of the fixing nut member, and the electric wire holding member is compressed from the outer side by the deformation of the locking member, and the covered electric wire Noise absorbing apparatus characterized by close contact with the seal.

2. The noise absorbing device according to claim 1, wherein the electroless magnetic stone is detachable from the apparatus main body.

The noise absorbing device according to claim 1, wherein a projecting member that engages with the electroless magnetic stone is provided on the electromagnet mounting portion inside the apparatus main body.

4. The noise absorbing device according to claim 3, wherein the projecting member engages with an end portion of the electroless magnetic stone to fix the electroless magnetic stone.

The noise absorbing device according to claim 3, wherein the protruding member presses and contacts the outer surface of the body portion of the electromagnetic stone to fix the electromagnetic stone.

2. The noise absorber according to claim 1, wherein a plurality of electromagnetic stones can be mounted in the apparatus main body, and the number of mounted electromagnetic stones can be changed in accordance with the state of noise disturbance.

The noise absorbing device according to claim 1, wherein the locking member realizes complete waterproofing even with different wire diameters.

The noise absorbing device according to claim 1, wherein the covered electric wire has elasticity, and the covered electric wire is completely fixed to the casing by using the elasticity.

The locking member has a rib projecting radially outward from the through hole of the apparatus main body on the outer periphery of a portion exposed to the outside from the end of the apparatus main body, and the locking member is screwed into the apparatus main body by screwing the nut member into the apparatus main body. 2. The noise absorbing device according to claim 1, wherein the rib is displaced inward in the radial direction by being fitted into the through hole of the main body to compress and deform the electric wire holding member.

The noise absorbing device according to claim 9, wherein the locking member has ribs at both ends.

The portion of the device main body with the covered electric wire inlet has a plurality of wire fixing portions, and the plurality of wire fixing portions are located at the end of the device main body from the wire fixing portion near the device main body from the device main body. The inner diameter of the wire fixing portion is set so as to gradually decrease toward the electric wire fixing portion at a distant portion, and the end portion of the electric wire fixing portion is formed in a forked crack structure, and the side portion separated into the two forked portions can be tightened by a fastening member. The noise absorber according to claim 1 .

12. The noise absorbing device according to claim 11 , wherein a cut groove is formed between one electric wire fixing portion and a portion adjacent thereto, and the cut portion can be separated .