JP4428546B2

JP4428546B2 - Switch structure of electrical equipment

Info

Publication number: JP4428546B2
Application number: JP2000391674A
Authority: JP
Inventors: 敬三水口
Original assignee: Kyushu Hitachi Maxell Ltd
Current assignee: Maxell Ltd
Priority date: 2000-12-22
Filing date: 2000-12-22
Publication date: 2010-03-10
Anticipated expiration: 2020-12-22
Also published as: JP2002197942A

Description

【０００１】
【発明の属する技術分野】
この発明は、フェイスシェーバー、電動歯ブラシ、電動爪磨き機、シェーバー等の電気機器に関し、そのスイッチ構造を改良したものである。
【０００２】
【従来の技術】
本発明のスイッチ構造に関する従来例に特開平８−２２７４１号公報がある。そこでは、ケース本体の内外にスライドピースと操作ノブとを配置し、両者を係合爪で同行スライド可能に係合連結している。詳しくは、操作ノブの内面に突設した左右一対の係合爪をケース本体に通設した案内溝に挿通し、爪先端の係合片をスライドピースの切欠部下縁に係合させている。スライドピースとその下面に配置した基板との間には、操作ノブのスライド変位に伴ってオン・オフする可動端子および固定端子が設けられている。
【０００３】
【発明が解決しようとする課題】
上記のように、操作ノブとスライドピースとが係合爪を介して連結されるスイッチ構造によれば、連結状態において係合爪の突端の係合片がスライドピースの下面に突出する。そのため、スライドピースの下面に係合爪を収容するための空間を確保する必要があり、その分だけケース本体が大形化するのを避けられない。例えば、女性用のフェイスシェーバーの場合には、全体を化粧用具のように繊細で細身に仕上げることが望まれるが、従来のスイッチ構造では、ケース本体を小形化することに限界があった。
【０００４】
この発明の目的は、操作ノブとスライドピースの連結構造を改良することにより、ケース本体の内部において、スイッチ構造が占める専有空間を小さくし、その分だけケース本体の小形化なかでも薄形化とコンパクト化を実現することにある。この発明の他の目的は、スライドピースとケース本体との間に設けられる節動機構を薄形化し、その分だけケース本体の薄形化とコンパクト化を実現することにある。
【０００５】
【課題を解決するための手段】
この発明のスイッチ構造は、ケース本体１に通設したガイド溝２２の内外に、可動端子２４が装着してあるスライドピース２３と、スライドピース２３をスライド操作するための操作ノブ６とを配置する。操作ノブ６とスライドピース２３との対向面には、ガイド溝２２を介して互いに嵌係合する外連結体３７と内連結体３１とを設ける。操作ノブ６から外連結体３７を内方に向けて突出させ、スライドピース２３から内連結体３１を外方に向けて突出させる。スライドピース２３のベース部３１ｃに設けた内連結体３１を枠状に形成する。内連結体３１の左右方向の幅寸法を、ベース部３１ｃのそれよりも小さく設定し、内連結体３１の内外方向の厚み寸法を、ベース部３１ｃのそれよりも大きく設定する。ガイド溝２２を、外連結体３７の挿入を許す通孔部と、ケース本体１の内面に設けられて、前記通孔部に連通して内連結体３１の収容を許す収容部とで構成する。収容部を、内方寄りに設けられてベース部３１ｃの内外方向の厚み寸法の一部の収容を許す幅広の内収容部と、該内収容部よりも外方寄りに設けられて、内連結体３１の内外方向の厚み寸法の全体の収容を許す幅狭の外収容部とからなる、段付き状に形成する。外連結体３７の下端左右に係合爪３７ａを設け、内連結体３１の枠体空間の内面上部に係合爪３７ａを受け止める係合段部３１ａを設け、これら係合爪３７ａと係合段部３１ａの係合により、内外の両連結体３１・３７は、操作ノブ６の外面と、スライドピース２３の内面との間で係合連結する。係合爪３７ａの全体を内連結体３１の枠内空間に収容する。ケース本体１に設けたガイド溝２２の厚み範囲内で、内連結体３１と外連結体３７とを係合連結する。
【０００７】
スライドピース２３は、ガイド溝２２と、ガイド溝２２の内方に配置したモーター４の平坦周面４ａとで往復スライド自在に案内支持する。
【０００８】
内外の両連結体３１・３７の嵌係合部の周面を、ガイド溝２２の溝側壁２２ａで拡開不能に規制案内する。
【０００９】
内連結体３１の枠外面に可動端子２４を外嵌装着する。
【００１０】
スライドピース２３に設けた内連結体３１のベース部３１ｃの周側壁を、ケース本体１の内面に突設したガイドリブ３９でスライド案内する。
【００１１】
ケース本体１とスライドピース２３との間には、スライドピース２３の切り換わり状態を保持する節動機構を設ける。節動機構は、スライドピース２３と一体に設けられて、左右方向へ弾性変形する節動部３２と、ケース本体１の内面に設けられる横向きの節動突起４０とで構成する。節動部３２の外側面に、突片３３を設ける。節動突起４０は、突片３３の内面より外側で突片３３と係合するように形成し、スライドピース２３のスライド移動に応じて、突片３３が節動突起４０を乗り越えるようにする。
【００１２】
ケース本体１は、内外二重の内ケース１Ａと外ケース１Ｂとで構成する。内ケース１Ａと、透明ないし半透明プラスチック材で形成した外ケース１Ｂとの間には、装飾シート１３を巻装配置する。装飾シート１３にはガイド溝２２に対応するスリット２９を形成する。かくして前記スリット２９を内外に貫通する内外の両連結体３１・３７のいずれかで装飾シート１３を周方向へは遊動不能に固定保持する。
【００１３】
【発明の作用効果】
ケース本体１の内外に配置したスライドピース２３と操作ノブ６とに、それぞれ内連結体３１と外連結体３７とを設け、両連結体３１・３７は、操作ノブ６の外面と、スライドピース２３の内面との間で係合連結するようにしたので、両連結体３１・３７の係合構造がスライドピース２３の内面より内方に突出するのを解消できる。従って、本発明によれば、ケース本体１の内部においてスイッチ構造が占める空間、とくに内外方向の厚み空間量が小さくなり、その分だけケース本体１を薄形化してコンパクト化できる。両連結体３１・３７の係合構造がスライドピース２３および操作ノブ６の外郭線の内側に位置することになるので、スイッチ切り換え時に係合構造が他物に引っ掛かることを一掃できるうえ、長期使用に伴う摩耗の影響を受けることもなく、信頼性を向上できる点で有利である。
【００１４】
ケース本体１に設けたガイド溝２２の厚み範囲内で、内連結体３１と外連結体３７とを係合連結すると、内連結体３１がガイド溝２２内に入り込む分だけ、ケース本体１を薄型化できるうえ、両連結体３１・３７の係合深さを大きくして係合強度を増強できる。
【００１５】
スライドピース２３をガイド溝２２とモーター４の平坦周面４ａとで案内支持するスイッチ構造によれば、スライドピース２３の左右方向の振れをガイド溝２２の溝側壁２２ａで規制し、さらにスライドピース２３の前後遊動をケース本体１と先の平坦周面４ａとで規制できるので、スイッチ切り換え時のスライドピース２３の往復スライド動作が円滑でしかも安定したものとなる。また、形状および寸法のばらつきがない。モーター４の平坦周面４ａを利用して、スライドピース２３の位置決めとスライド時の位置規制とを行うので、スライドピース２３の切り換え動作が安定化し、ケース本体１内における部品の集積度を向上できる。
【００１６】
内外の両連結体３１・３７の嵌係合部の周面をガイド溝２２の溝側壁２２ａで拡開不能に規制案内するスイッチ構造によれば、落下衝撃や強い外力がスイッチ構造に作用した場合でも、両連結体３１・３７の嵌係合部が変形し、分離しようとする動作を、ケース本体１に設けたガイド溝２２で規制し、両連結体３１・３７の分離を確実に阻止できる。とくに、スイッチ構造の構成部品が小さい場合には、寸法のばらつきと遊動隙間のばらつきの影響を受けやすく、比較的小さな外力を受けて嵌係合部が分離することがあるが、こうした場合にも両連結体３１・３７が分離するのを防止できる。
【００１７】
内連結体３１を枠状に構成し、その内面に操作ノブ６側の外連結体３７を内嵌係合したうえで、内連結体３１の枠外面に可動端子２４を外嵌装着するスイッチ構造によれば、ガイド溝２２の溝側壁２２ａによる嵌係合部の分離防止作用に加えて、金属板製の可動端子２４による内連結体３１の拡開変形防止作用が得られるので、内外の両連結体３１・３７の分離をさらに確実に行える。また、可動端子２４を枠状の内連結体３１に外嵌するので、可動端子２４のスライドピース２３に対する組み付け位置と姿勢のばらつきを阻止でき、スイッチ切り換え時に、可動端子２４が摺動抵抗を受けてぐら付くことを抑止し、スイッチのオン・オフ切り換えが安定して行える。なお、内連結体３１を枠状に構成するとは、無端枠状、無端環状、および枠周囲の一部が分断してある場合のいずれをも含む。
【００１８】
スライドピース２３に設けた内連結体３１の周側壁を、ケース本体１の内面に突設したガイドリブ３８でスライド案内するのは、スイッチ切り換え時に、内連結体３１とその枠部外面に外嵌装着した可動端子２４が、内連結体３１に対して遊動するのをガイドリブ３８で規制して、可動端子２４の固定端子２５に対する接触状態が不安定になるのを避け、スイッチングを安定的に行うためである。
【００１９】
内ケース１Ａとスライドピース２３との間に設けられる節動機構が、スライドピース２３側の節動部３２と、内ケース１Ａ側の横向きの節動突起４０とで構成され、節動突起４０をスライドピース２３の内面より外側で節動部３２と係合させると、節動突起４０がスライドピース２３の内面より内方に突出することがないので節動機構の全体を薄形化でき、その分だけケース本体１の薄形化とコンパクト化を実現できる。節動突起４０は、例えば図６に示すように、内ケース１Ａの周壁を貫通する開口を利用して、その周縁に横向きに突出形成するが、そのままでは、先の開口を介して塵埃等がケース内部へ入り込む。外観上の体裁も悪い。しかし、ケース本体１を内ケース１Ａと外ケース１Ｂとで内外二重に構成しておくと、先の開口の外面を外ケース１Ｂで覆うことができるので、塵埃等の侵入の余地がないうえ、外観上の体裁も向上できる。
【００２０】
外観上の体裁を向上させるために、内ケース１Ａと外ケース１Ｂとの間に装飾シート１３を配置し、透明ないし半透明の外ケース１Ｂを介して装飾シート１３を視認できるようにしたケース構造においては、装飾シート１３がケース周面に沿って遊動し、例えばシートの周方向端に隙間を生じたり、あるいはシートの上下端が斜めに傾くことがある。このような装飾シート１３にスイッチ用のガイド溝２２に対応するスリット２９を設けておき、このスリット２９を貫通する内外の両連結体３１・３７のいずれかで受け止めると、装飾シート１３の周方向へのずれ動きや傾動を阻止して、外観上の体裁を維持し続けることができる。
【００２１】
【実施例】
図１ないし図１２はこの発明をフェイスシェーバーに適用した実施例を示す。図２においてフェイスシェーバーは、上下に長いケース本体１の上半のヘッド部２に刃ユニット３を設けてあり、下半のグリップ部の内部に、刃ユニット３用の駆動機構とその動力源であるモーター４と、電池５などを配置してなる。ケース本体１の前面中央には、モーター４への通電をオン・オフする操作ノブ６が配設設されている。ヘッド部２には上すぼまり鞘状のキャップ７が着脱可能に装着される。
【００２２】
ケース本体１は、ヘッド部２を含む内ケース１Ａと、主としてグリップ部を構成する外ケース１Ｂとで内外二重に構成する。図３に示すように、内ケース１Ａは前後に分割された前ケース８ａと後ケース８ｂとを蓋合わせ状に接合して構成してある。前ケース８ａの上部背面、即ち後ケース８ｂの上部には、先の刃ユニット３が着脱可能に装着してある。図４において刃ユニット３は、うぶ毛用の刃ユニットとまゆ毛用の刃ユニットとがあり、両者を交換装着できる。符号１０は刃ユニット３用のロックボタンである。
【００２３】
外ケース１Ｂは透明プラスチック材で形成した上下端が開口する筒状体からなり、その下端に電池キャップ１２が着脱可能に圧嵌装着してある。外ケース１Ｂと内ケース１Ａとの間には、図６に示すようにポリカーボネイト製の装飾シート１３が筒状に丸めた状態で装填してある。装飾シート１３には、色および模様が印刷され、その外ケース１Ｂとの接触面に微少凹凸が形成してある。
【００２４】
刃ユニット３は、ケース１４と、ケース１４に固定される固定刃１５、および駆動機構で往復駆動される可動刃１６などで構成する。図５および図７において駆動機構は、モーター４の出力軸に固定した原動ギヤ１７と、原動ギヤ１７の回転動力を受継ぐフェースギヤ１８と、フェースギヤ１８でクランクピン１９を介して上下方向へ往復駆動される駆動アーム２０とからなる。駆動アーム２０の先端は、先の可動刃１６の下端に設けた駆動ピースに差し込み連結してある。
【００２５】
モーター４への通電をオン・オフするためのスイッチ構造は、内ケース１Ａおよび外ケース１Ｂに通設した上下方向に長いガイド溝２２と、ガイド溝２２の内外に配置したスライドピース２３および先の操作ノブ６と、スライドピース２３に装着した可動端子２４と、前ケース８ａに固定される固定端子２５などで構成する。後述するように、内外の両連結体３１・３７を係合連結するとき、内連結体３１の枠部は僅かに拡開変形する。そのためにガイド溝２２の左右幅は枠部拡開変形を許す余裕を加味して、両連結体３１・３７の左右寸法より幾分大きめに設定する。装飾シート１３にも、図６に示すごとく先のガイド溝２２に対応するスリット２９が形成してある。
【００２６】
図１０において、固定端子２５は前ケース８ａの後ケース８ｂとの接合縁に沿って電池５の一側に隣接配置してあり、その下端に連結した電池押えばね２６を介して、電池５の負極に接続されている。固定端子２５の上端には、前ケース８ａの内周面に沿うスイッチ部２５ａが設けてある。このスイッチ部２５ａは前ケース８ａに溶着固定してある。このように、固定端子２５を前ケース８ａの内面に直接取り付けると、その取り付けのための基板を別部品として設ける必要がないので、その分だけケース本体１薄型化できる。電池５の正極は、前ケース８ａに固定した第１接続端子２７を介してモーター４の正極側入力端子に接続されている。可動端子２４は、上下スライドすることによって、先の固定端子２５と、モーター４の負極側入力端子に接続された第２接続端子２８とを導通し、あるいは遮断する。
【００２７】
図６においてスライドピース２３は、上下に長い板状のプラスチック成形品からなり、その下端側の片面に四角枠状の内連結体３１とベース部３１ｃを形成し、内連結体３１より上側のベース部３１ｃに連続する板面をくり抜いて、左右方向へ弾性変形できる一対の節動部３２を形成してなる。節動部３２の上下中途部の外側面には、後述する節動突起４０を乗り越える突片３３が設けてある。可動端子２４は銅板を打ち抜いて形成してあり、その板面には内連結体３１に外嵌する枠部３４を設け、枠部３４の下側には常に第２接続端子２８と接触する導通片３５を設け、枠部３４の上側には固定端子２５のスイッチ部２５と接離する接離片３６を設けてなる。
【００２８】
操作ノブ６は、上下に長い楕円形のボタンからなり、その内面に外連結体３７が突設してある。組立工程の終段において、操作ノブ６の外連結体３７を外ケース１Ｂの外面側から、ガイド溝２２を介してスライドピース２３の内連結体３１に圧嵌係合することにより、両者２３・３７をガイド溝２２に沿って上下に同行スライドでき、モーター４への通電状態をオン・オフできる。
【００２９】
ケース本体１の内部におけるスイッチ構造の占有空間を小さくし、その分だけケース本体１の薄形化とコンパクト化を実現するために、内外の両連結体３１・３７は、操作ノブ６の外面と、スライドピース２３の内面との間、より好ましくは図１に示すようにケース本体１に設けたガイド溝２２の厚み範囲内で係合連結する。詳しくは、図１に示すように、外連結体３７の下端左右に係合爪３７ａを設け、内連結体３１の内面上部寄りに係合爪３７ａを受け止める係合段部３１ａを設けて、この段部３１ａより下側の枠内空間で係合爪３７ａの全体を収容している。外連結体３７を内連結体３１に圧嵌係合するとき、内連結体３１の枠部が僅かに拡開変形し、係合爪３７ａは僅かに収縮変形する。しかし、操作ノブ６にこれを抜き外し分離するような外力が作用する場合には、内連結体３１にその枠部を拡開変形するような力が生じるものの、係合爪３７ａ自体には係合時のような収縮力が作用することはない。従って、衝撃力で外連結体３７が内連結体３１から分離するのをよく防止できる。このような状況を考慮して、先のガイド溝２２と内外の両連結体３１・３７との左右方向の隙間を最小必要限度に設定している。
【００３０】
上記のように操作ノブ６とスライドピース２３とを本体ケース１に組み付けた状態において、スライドピース２３の内連結体３１の左右側面が、内ケース１Ａ側のガイド溝２２の溝側壁２２ａで拡開不能に規制案内され、さらに、内連結体３１は、その周面に外嵌する金属板製の枠部３４によって拡開変形が規制されている。従って、落下衝撃を受けるような場合にも、内連結体３１がガイド溝２２内で拡開変形して、内外の両連結体３１・３７の係合状態が解除されることはない。とくに、金属板製の枠部３４による拡開変形規制作用は長期にわたる。
【００３１】
スライドピース２３の内外面はモーター４の平坦周面４ａと、ガイド溝２２に沿って設けた浅いガイド凹部３８とでスライド案内されている。詳しくは、内連結体３１のベース部３１ｃの内面と可動端子２４の枠部３４とを、平坦周面４ａとガイド凹部３８とでスライド案内している。さらに、スライドピース２３のベース部３１ｃと枠部３４の左右側面が、ガイド凹部３８の両側に突設したガイドリブ３９で案内支持されている。組み付け状態における可動端子２４の導通片３５と接離片３６とは、それぞれ第２接続端子２８と前ケース８ａの内面に対して、一定のばね圧を生じた状態で圧接している。従って、可動端子２４は、内連結体３１の基端に張り出したベース部３１ｃに常時押付けられることとなり、これにより、溶着などの手間を要することもなく可動端子２４をスライドピース２３に固定でき、その分だけ組立工数を削減できる。
【００３２】
先に説明したように、内外の両連結体３１・３７と先のガイド溝２２との間の隙間は、上下スライドを円滑に行うためにやや大きめに設定するが、内連結体３１のベース部３１ｃとガイドリブ３９との間の隙間は最小必要限度として、ベース部３１ｃと可動端子２４の枠部３４との側面をガイドリブ３９で遊動不能にガイドする。これは、スライドピース２３および可動端子２４の横方向への遊動をガイドリブ３９で規制して、可動端子２４の固定端子２５に対する接触状態が不安定になるのを避け、スイッチングを安定的に行うためである。
【００３３】
スライドピース２３をオン・オフの各位置において保持し、さらに切り換え途中にクリック感を与えるために、スライドピース２３と前ケース８ａ（内ケース１Ａ）との間に節動機構を有する。図１１において節動機構は、スライドピース２３の一対の節動部３２と、前ケース８ａの内面に設けられる節動突起４０とで構成する。節動突起４０は、図６に示すごとく前ケース８ａの周壁に鋳抜き形成される開口を利用して、この開口の開縁に左右対向状に設ける。内ケース８ａの周壁は断面半円状に形成するが、スライドピース２３のスライド範囲の左右は、内ケース８ａの内周面より僅かに凹ませてある。さらに、節動突起４０は内ケース８ａの内周面より僅かに突出している。従って、節動部３２の突片３３の下隅と、節動突起４０の上隅とは、図１２に示すようにスライド方向にラップし合う。従って、操作ノブ６を上下スライド操作すると、節動部３２を左右内向きに弾性変形させながら突片３３が節動突起４０を乗り越える。
【００３４】
図９に示すように操作ノブ６を上方へスライド操作してオン状態に切り換えると、スライドピース２３の上端に設けた受動片４１が、前ケース８ａのキャップ７用の段部に設けた開口４２から、キャップ７が被さる領域へと突出する。そのため、操作ノブ６をオン状態にしたままでキャップ７をケース本体１に装着すると、スライドピース２３および操作ノブ６のそれぞれが、キャップ７で強制的にオフ位置へ戻され、電池５が無駄に消耗されるのを防止できる。また、キャップ７を装着した状態のままで、操作ボタン６がオン位置へ切り換え操作されるのをよく防止できる。
【００３５】
内ケース１Ａと外ケース１Ｂとの間に介装した装飾シート１３は一枚のシートからなり、両ケース１Ａ・１Ｂ間の周面に沿って巻装してある。そのため、装飾シート１３は周方向へ遊動するおそれがあるが、この実施例においては、図１に示すごとく装飾シート１３に通設したスリット２９を先の外連結体３７で受け止めて、装飾シート１３の周方向への遊動を阻止している。
【００３６】
図１３および図１４は、それぞれ内外の両連結体３１・３７の係合構造の変形例を示す。図１３（参考実施例）においては、外連結体３７を左右一対の腕片で形成し、両腕片の先端内面に係合爪３７ａを対向状に設けた。また、内連結体３１は一個の腕片で形成し、その突端寄りの左右側面に係合段部３１ａを形成した。この場合には、外連結体３７の拡開変形を内ケース１Ａと、外ケース１Ｂに設けたガイド溝２２とで確実に規制できる。外連結体３７は、内連結体３１に外嵌した可動端子２４の浮き上りを防ぐことにも役立っている。
【００３７】
図１４（参考実施例）においては、内連結体３１を左右一対の腕片で形成し、その先端に係合爪３１ｂを設け、この係合爪３１ｂを操作ノブ６の外面凹部の係合段部３７ｂで受け止め係合できるようにしてある。操作ノブ６の外面凹部は別途設けた蓋板４４で塞いでおく。
【００３８】
図１５はスイッチ構造の別の実施例を示す。そこでは、ガイド溝２２の下端に、ガイド溝２２より広幅の組付け溝４５を設け、この組付け溝４５内において外連結体３７を内連結体３１に圧嵌係合できるようにし、両連結体３１・３７を係合連結した後、操作ノブ６とスライドピース２３を本来のオン・オフ領域へスライド変位させる点に特徴がある。符号４６は操作ノブ６をオフ位置で受け止める突起である。このように、組付け溝４５内で、両連結体３１・３７を圧嵌係合すると、ガイド溝２２内で両連結体３１・３７を圧嵌係合する場合に比べて、ガイド溝２２と両連結体３１・３７との間の左右隙間を最小限化できるので、スイッチ切り換え時に操作ノブ６やスライドピース２３が左右遊動するのを確実に規制でき、従って、可動端子２４の固定端子２５に対する接触状態が不安定になるのを避け、スイッチングを安定的に行うことができる。
【００３９】
上記の実施例以外に、スライドピース２３は、モーター４に隣接配置した回路基板の平坦面とガイド溝２２とでスライド案内できる。内外の両連結体３１・３７は、互いに圧入連結される穴と突起とで構成することができる。内連結体３１は、無端枠状に形成する以外に、無端環状、あるいは周囲の一部が途切れた枠状ないし環状に形成することができる。節動機構は、図１６に示すように変更できる。そこでは、スライドピース２３の内ケース１Ａとの摺動面の側に、左右方向へ弾性変形できる節動部３２を突設し、その突端の外側に節動突起４０を乗り越える突片３３を設けた。この場合、スライドピース２３をスライド案内する内ケース１Ａの周壁は平坦であってもよい。操作ノブ６とスライドピース２３の係合連結部に望むケース壁面も、湾曲している必要はなく平坦壁であってもよい。ケース本体１は内外二重である必要はない。スイッチ機構は、３位置ないし４位置に切り換えられる構造であってもよい。節動突起４０は、壁面に鋳抜き形成される開口を利用して形成する必要はなく、壁に設けた凹部を利用してその内側面に形成することができる。
【図面の簡単な説明】
【図１】図８におけるＡ−Ａ線断面図である。
【図２】キャップを外した状態の正面図である。
【図３】ケースおよび内部部品を分離した分解断面図である。
【図４】ヘッド部の背面図である。
【図５】全体の縦断側面図である。
【図６】スイッチ機構の分解斜視図である。
【図７】刃ユニットの駆動機構を示す縦断正面図である。
【図８】スイッチ・オフ状態での要部の縦断側面図である。
【図９】スイッチ・オン状態での要部の縦断側面図である。
【図１０】スイッチ部の一部破断正面図である。
【図１１】スイッチ部をケース内面側から見た背面図である。
【図１２】図１１におけるＢ−Ｂ線断面図である。
【図１３】操作ノブとスライドピースの連結構造の参考実施例を示す断面図である。
【図１４】操作ノブとスライドピースの連結構造の参考実施例を示す断面図である。
【図１５】操作ノブとスライドピースの連結構造の更に異なる別実施例を示す断面図である。
【図１６】節動機構の別実施例を示す断面図である。
【符号の説明】
１ケース本体
６操作ノブ
２２ガイド溝
２３スライドピース
２４可動端子
３１内連結体
３７外連結体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric device such as a face shaver, an electric toothbrush, an electric nail brush, a shaver, and the like, and has an improved switch structure.
[0002]
[Prior art]
Japanese Patent Laid-Open No. 8-22741 is a conventional example related to the switch structure of the present invention. In this case, a slide piece and an operation knob are arranged inside and outside the case body, and both are engaged and connected by an engaging claw so as to be slidable together. Specifically, a pair of left and right engaging claws protruding from the inner surface of the operation knob is inserted into a guide groove provided in the case body, and an engaging piece at the tip of the claw is engaged with the lower edge of the notch portion of the slide piece. A movable terminal and a fixed terminal that are turned on and off in accordance with the sliding displacement of the operation knob are provided between the slide piece and the substrate disposed on the lower surface thereof.
[0003]
[Problems to be solved by the invention]
As described above, according to the switch structure in which the operation knob and the slide piece are connected via the engaging claw, the engaging piece at the protruding end of the engaging claw protrudes from the lower surface of the slide piece in the connected state. Therefore, it is necessary to secure a space for accommodating the engaging claws on the lower surface of the slide piece, and it is inevitable that the case main body becomes larger by that amount. For example, in the case of a face shaver for women, it is desired that the whole is finished as delicate and slender as a cosmetic tool. However, in the conventional switch structure, there is a limit to downsizing the case body.
[0004]
The object of the present invention is to reduce the space occupied by the switch structure inside the case body by improving the connection structure of the operation knob and the slide piece, and to reduce the thickness of the case body by that amount. The goal is to achieve compactness. Another object of the present invention is to make the moderation mechanism provided between the slide piece and the case main body thinner, and to realize the thinning and compactness of the case main body accordingly.
[0005]
[Means for Solving the Problems]
In the switch structure of the present invention, a slide piece 23 on which a movable terminal 24 is mounted and an operation knob 6 for sliding the slide piece 23 are arranged inside and outside a guide groove 22 provided in the case body 1. . An outer connection body 37 and an inner connection body 31 that are fitted and engaged with each other via the guide groove 22 are provided on the opposing surfaces of the operation knob 6 and the slide piece 23. The outer connecting body 37 is protruded inward from the operation knob 6, and the inner connecting body 31 is protruded outward from the slide piece 23. The inner connection body 31 provided in the base part 31c of the slide piece 23 is formed in a frame shape. The width dimension of the inner connecting body 31 in the left-right direction is set smaller than that of the base part 31c, and the thickness dimension of the inner connecting body 31 in the inner / outer direction is set larger than that of the base part 31c. The guide groove 22 is constituted by a through hole portion that allows the outer connecting body 37 to be inserted, and a housing portion that is provided on the inner surface of the case body 1 and that allows the inner connecting body 31 to be housed in communication with the through hole portion. . A wide inner housing portion that is provided closer to the inside and allows part of the inner and outer thickness dimensions of the base portion 31c to be accommodated, and an inner connection portion that is provided closer to the outer side than the inner housing portion. The body 31 is formed in a stepped shape including a narrow outer accommodating portion that allows accommodation of the entire thickness dimension in the inner and outer directions. Engaging claws 37a are provided on the left and right sides of the lower end of the outer connecting body 37, and engaging step portions 31a for receiving the engaging claws 37a are provided on the upper inner surface of the frame body space of the inner connecting body 31. Due to the engagement of the portion 31 a, the inner and outer coupling bodies 31 and 37 are engaged and coupled between the outer surface of the operation knob 6 and the inner surface of the slide piece 23. The entire engaging claws 37 a are accommodated in the frame space of the inner coupling body 31. The inner connecting body 31 and the outer connecting body 37 are engaged and connected within the thickness range of the guide groove 22 provided in the case body 1.
[0007]
The slide piece 23 is guided and supported by the guide groove 22 and the flat peripheral surface 4a of the motor 4 disposed inside the guide groove 22 so as to be slidable back and forth.
[0008]
The circumferential surfaces of the fitting engagement portions of the inner and outer coupling bodies 31 and 37 are regulated and guided by the groove side wall 22a of the guide groove 22 so as not to expand.
[0009]
The movable terminal 24 is externally fitted to the outer surface of the inner connector 31.
[0010]
The peripheral side wall of the base portion 31 c of the inner coupling body 31 provided on the slide piece 23 is slid and guided by guide ribs 39 protruding from the inner surface of the case body 1.
[0011]
Between the case main body 1 and the slide piece 23, there is provided an articulation mechanism that holds the switching state of the slide piece 23. The joint mechanism includes a joint part 32 that is provided integrally with the slide piece 23 and elastically deforms in the left-right direction, and a lateral joint protrusion 40 provided on the inner surface of the case body 1. A projecting piece 33 is provided on the outer surface of the joint portion 32. Articulating projection 40 is formed so as to engage the protrusion 33 outside from the inner surface of the projecting piece 33, in accordance with the sliding movement of the sliding piece 23, protruding pieces 33 to get over the articulating projections 40.
[0012]
The case main body 1 includes an inner case 1A and an outer case 1B. A decorative sheet 13 is wound between the inner case 1A and the outer case 1B formed of a transparent or translucent plastic material. A slit 29 corresponding to the guide groove 22 is formed in the decorative sheet 13. Thus, the decorative sheet 13 is fixedly held in the circumferential direction so as not to be freely movable by either of the inner and outer coupling bodies 31 and 37 penetrating the slit 29 inward and outward.
[0013]
[Effects of the invention]
An inner coupling body 31 and an outer coupling body 37 are provided on the slide piece 23 and the operation knob 6 disposed inside and outside the case body 1, respectively, and both the coupling bodies 31 and 37 are provided on the outer surface of the operation knob 6 and the slide piece 23. Since the engagement connection between the inner surfaces of the slide pieces 23 is eliminated, it is possible to eliminate the engagement structure of both the connecting bodies 31 and 37 projecting inward from the inner surface of the slide piece 23. Therefore, according to the present invention, the space occupied by the switch structure in the inside of the case body 1, particularly the thickness space amount in the inner and outer directions is reduced, and the case body 1 can be made thinner and more compact accordingly. Since the engagement structure of both the coupling bodies 31 and 37 is located inside the outline of the slide piece 23 and the operation knob 6, it is possible to wipe out the engagement structure from being caught by other objects when the switch is switched, and it can be used for a long time. This is advantageous in that the reliability can be improved without being affected by the wear caused by the.
[0014]
When the inner connecting body 31 and the outer connecting body 37 are engaged and connected within the thickness range of the guide groove 22 provided in the case main body 1, the case main body 1 is thinned to the extent that the inner connecting body 31 enters the guide groove 22. In addition, the engagement depth can be increased by increasing the engagement depth of both the coupling bodies 31 and 37.
[0015]
According to the switch structure in which the slide piece 23 is guided and supported by the guide groove 22 and the flat peripheral surface 4 a of the motor 4, the lateral vibration of the slide piece 23 is restricted by the groove side wall 22 a of the guide groove 22, and further, the slide piece 23. Can be regulated by the case body 1 and the flat peripheral surface 4a, the reciprocating slide operation of the slide piece 23 at the time of switching the switch is smooth and stable. There is no variation in shape and dimensions. Since the flat peripheral surface 4a of the motor 4 is used to position the slide piece 23 and restrict the position at the time of sliding, the switching operation of the slide piece 23 is stabilized, and the degree of integration of components in the case body 1 can be improved. .
[0016]
According to the switch structure that restricts and guides the peripheral surfaces of the fitting engagement portions of the inner and outer coupling bodies 31 and 37 by the groove side wall 22a of the guide groove 22 so that the expansion is impossible, a drop impact or a strong external force acts on the switch structure. However, the fitting engagement portions of both the coupling bodies 31 and 37 are deformed and the operation to be separated is restricted by the guide groove 22 provided in the case main body 1, so that the separation of the both coupling bodies 31 and 37 can be reliably prevented. . In particular, when the components of the switch structure are small, they are easily affected by variations in dimensions and variations in idle gaps, and the fitting engagement part may be separated by receiving a relatively small external force. It is possible to prevent the two connected bodies 31 and 37 from separating.
[0017]
A switch structure in which the inner coupling body 31 is configured in a frame shape, and the outer coupling body 37 on the operation knob 6 side is fitted and engaged with the inner surface of the inner coupling body 31, and the movable terminal 24 is fitted on the outer surface of the frame of the inner coupling body 31. According to this, in addition to the effect of preventing the separation of the fitting engagement portion by the groove side wall 22a of the guide groove 22, the effect of preventing the expansion and deformation of the inner coupling body 31 by the movable terminal 24 made of a metal plate can be obtained. The connection bodies 31 and 37 can be further reliably separated. In addition, since the movable terminal 24 is externally fitted to the frame-shaped inner coupling body 31, variations in the assembly position and posture of the movable terminal 24 with respect to the slide piece 23 can be prevented, and the movable terminal 24 receives sliding resistance when the switch is switched. It prevents the rattling and can switch the switch on and off stably. It should be noted that the configuration of the inner coupling body 31 in a frame shape includes any of an endless frame shape, an endless annular shape, and a case where a part of the periphery of the frame is divided.
[0018]
The peripheral side wall of the inner coupling body 31 provided on the slide piece 23 is slid and guided by the guide rib 38 projecting from the inner surface of the case body 1 when the switch is switched. To prevent the movable terminal 24 from moving with respect to the inner coupling body 31 by the guide rib 38 and to prevent the contact state of the movable terminal 24 with respect to the fixed terminal 25 from becoming unstable and to perform switching stably. It is.
[0019]
A joint mechanism provided between the inner case 1A and the slide piece 23 includes a joint part 32 on the slide piece 23 side and a lateral joint protrusion 40 on the inner case 1A side. When engaged with the joint portion 32 outside the inner surface of the slide piece 23, the joint projection 40 does not protrude inward from the inner surface of the slide piece 23, so that the entire joint mechanism can be thinned. The case body 1 can be made thinner and more compact as much as possible. For example, as shown in FIG. 6, the joint protrusion 40 is formed to protrude laterally at the periphery of the inner case 1 </ b> A through an opening that penetrates the peripheral wall of the inner case 1 </ b> A. Enter the case. Appearance is also bad. However, if the case main body 1 is configured by an inner case 1A and an outer case 1B, the outer surface of the previous opening can be covered with the outer case 1B, so there is no room for entry of dust and the like. The appearance can be improved.
[0020]
In order to improve the appearance, the decorative sheet 13 is disposed between the inner case 1A and the outer case 1B so that the decorative sheet 13 can be visually recognized through the transparent or translucent outer case 1B. In this case, the decorative sheet 13 may move along the peripheral surface of the case, and for example, a gap may be formed at the circumferential end of the sheet, or the upper and lower ends of the sheet may be inclined obliquely. When such a decorative sheet 13 is provided with a slit 29 corresponding to the guide groove 22 for the switch and is received by either of the inner and outer coupling bodies 31 and 37 penetrating the slit 29, the circumferential direction of the decorative sheet 13 It is possible to keep the appearance of the appearance by preventing the shifting and tilting.
[0021]
【Example】
1 to 12 show an embodiment in which the present invention is applied to a face shaver. In FIG. 2, the face shaver is provided with a blade unit 3 in the upper half head portion 2 of the case body 1 that is long in the vertical direction, and a drive mechanism for the blade unit 3 and its power source inside the lower half grip portion. A certain motor 4 and a battery 5 are arranged. In the center of the front surface of the case main body 1, an operation knob 6 for turning on / off the energization of the motor 4 is disposed. The head portion 2 is detachably mounted with a cap 7 having a constricted sheath.
[0022]
The case main body 1 is configured in an inner / outer double manner by an inner case 1A including the head portion 2 and an outer case 1B mainly constituting a grip portion. As shown in FIG. 3, the inner case 1 </ b> A is configured by joining a front case 8 a and a rear case 8 b which are divided into front and rear portions in a lid-like manner. The front blade unit 3 is detachably mounted on the upper rear surface of the front case 8a, that is, the upper portion of the rear case 8b. In FIG. 4, the blade unit 3 has a blade unit for vellus hair and a blade unit for eyebrows, and both of them can be exchanged. Reference numeral 10 denotes a lock button for the blade unit 3.
[0023]
The outer case 1B is formed of a cylindrical body having upper and lower ends that are formed of a transparent plastic material, and a battery cap 12 is detachably press-fitted to the lower end thereof. As shown in FIG. 6, a decorative sheet 13 made of polycarbonate is loaded between the outer case 1B and the inner case 1A in a state of being rolled into a cylindrical shape. A color and a pattern are printed on the decorative sheet 13, and minute irregularities are formed on the contact surface with the outer case 1 </ b> B.
[0024]
The blade unit 3 includes a case 14, a fixed blade 15 fixed to the case 14, and a movable blade 16 that is reciprocally driven by a drive mechanism. 5 and 7, the drive mechanism includes a driving gear 17 fixed to the output shaft of the motor 4, a face gear 18 that inherits the rotational power of the driving gear 17, and the face gear 18 through the crank pin 19 in the vertical direction. It comprises a drive arm 20 that is driven reciprocally. The distal end of the drive arm 20 is inserted and connected to a drive piece provided at the lower end of the previous movable blade 16.
[0025]
The switch structure for turning on / off the energization of the motor 4 includes a guide groove 22 that is long in the up-down direction through the inner case 1A and the outer case 1B, a slide piece 23 disposed inside and outside the guide groove 22, and The operation knob 6, the movable terminal 24 attached to the slide piece 23, and the fixed terminal 25 fixed to the front case 8 a are configured. As will be described later, when the inner and outer connecting bodies 31 and 37 are engaged and connected, the frame portion of the inner connecting body 31 is slightly expanded and deformed. Therefore, the left and right widths of the guide grooves 22 are set to be slightly larger than the left and right dimensions of both the connecting bodies 31 and 37 in consideration of allowance for allowing the frame portion to expand and deform. The decorative sheet 13 is also formed with slits 29 corresponding to the guide grooves 22 as shown in FIG.
[0026]
In FIG. 10, the fixed terminal 25 is disposed adjacent to one side of the battery 5 along the joining edge of the front case 8a with the rear case 8b, and the battery 5 is connected to the lower end of the battery 5 via a battery holding spring 26 connected to the lower end thereof. Connected to the negative electrode. At the upper end of the fixed terminal 25, a switch portion 25a is provided along the inner peripheral surface of the front case 8a. The switch portion 25a is welded and fixed to the front case 8a. As described above, when the fixed terminal 25 is directly attached to the inner surface of the front case 8a, it is not necessary to provide a separate substrate for the attachment, so that the case body 1 can be made thinner accordingly. The positive electrode of the battery 5 is connected to the positive electrode side input terminal of the motor 4 via the first connection terminal 27 fixed to the front case 8a. The movable terminal 24 slides up and down to conduct or block the previous fixed terminal 25 and the second connection terminal 28 connected to the negative side input terminal of the motor 4.
[0027]
In FIG. 6, the slide piece 23 is made of a plate-shaped plastic molded product that is long in the vertical direction, and has a rectangular frame-shaped inner connection body 31 and a base portion 31 c formed on one surface on the lower end side. A plate surface continuous with the portion 31c is cut out to form a pair of joint portions 32 that can be elastically deformed in the left-right direction. On the outer surface of the middle part of the joint part 32 in the vertical direction, a projecting piece 33 is provided so as to get over the joint projection 40 described later. The movable terminal 24 is formed by punching a copper plate, and a frame portion 34 that is externally fitted to the inner coupling body 31 is provided on the plate surface, and the electrical connection that always contacts the second connection terminal 28 is provided below the frame portion 34. A piece 35 is provided, and an contacting / separating piece 36 that contacts and separates from the switch portion 25 of the fixed terminal 25 is provided above the frame portion 34.
[0028]
The operation knob 6 is composed of an elliptical button that is long in the vertical direction, and an outer coupling body 37 projects from the inner surface thereof. At the final stage of the assembly process, the outer connecting body 37 of the operation knob 6 is press-fitted and engaged with the inner connecting body 31 of the slide piece 23 through the guide groove 22 from the outer surface side of the outer case 1B. 37 can be slid up and down along the guide groove 22 and the energized state of the motor 4 can be turned on and off.
[0029]
In order to reduce the space occupied by the switch structure inside the case body 1 and to realize a thinner and more compact case body 1, the inner and outer coupling bodies 31 and 37 are connected to the outer surface of the operation knob 6. , And more preferably within the thickness range of the guide groove 22 provided in the case body 1, as shown in FIG. Specifically, as shown in FIG. 1, engagement claws 37 a are provided on the left and right sides of the lower end of the outer connection body 37, and an engagement step portion 31 a that receives the engagement claws 37 a is provided closer to the upper surface of the inner connection body 31. The entire engaging claw 37a is accommodated in the space inside the frame below the step portion 31a. When the outer connecting body 37 is press-fitted and engaged with the inner connecting body 31, the frame portion of the inner connecting body 31 is slightly expanded and deformed, and the engaging claws 37a are slightly contracted and deformed. However, when an external force is applied to the operating knob 6 so as to remove it and separate it, a force is generated in the inner connecting body 31 to expand and deform the frame portion, but the engaging claw 37a itself is engaged. There is no contractive force acting at the same time. Therefore, it is possible to well prevent the outer coupling body 37 from being separated from the inner coupling body 31 by an impact force. Considering such a situation, the gap in the left-right direction between the previous guide groove 22 and the inner and outer coupling bodies 31 and 37 is set to the minimum necessary limit.
[0030]
In the state where the operation knob 6 and the slide piece 23 are assembled to the main body case 1 as described above, the left and right side surfaces of the inner coupling body 31 of the slide piece 23 are expanded by the groove side wall 22a of the guide groove 22 on the inner case 1A side. The inner connection body 31 is restricted and guided in an impossible manner, and the expansion deformation of the inner connecting body 31 is restricted by a frame 34 made of a metal plate that is fitted around the peripheral surface thereof. Therefore, even in the case of receiving a drop impact, the inner connecting body 31 is not expanded and deformed in the guide groove 22 and the engaged state of the inner and outer connecting bodies 31 and 37 is not released. In particular, the expansion deformation restricting action by the metal plate frame 34 is long-term.
[0031]
The inner and outer surfaces of the slide piece 23 are slidably guided by a flat peripheral surface 4 a of the motor 4 and a shallow guide recess 38 provided along the guide groove 22. Specifically, the inner surface of the base portion 31 c of the inner coupling body 31 and the frame portion 34 of the movable terminal 24 are slidably guided by the flat peripheral surface 4 a and the guide recess 38. Further, the left and right side surfaces of the base portion 31 c and the frame portion 34 of the slide piece 23 are guided and supported by guide ribs 39 protruding from both sides of the guide recess 38. The conductive piece 35 and the contact / separation piece 36 of the movable terminal 24 in the assembled state are in pressure contact with the second connection terminal 28 and the inner surface of the front case 8a, respectively, in a state where a certain spring pressure is generated. Accordingly, the movable terminal 24 is always pressed against the base portion 31c protruding from the base end of the inner coupling body 31, and thereby the movable terminal 24 can be fixed to the slide piece 23 without requiring troubles such as welding, The assembly man-hour can be reduced accordingly.
[0032]
As described above, the gap between the inner and outer coupling bodies 31 and 37 and the previous guide groove 22 is set to be slightly larger in order to smoothly slide up and down. The gap between 31c and the guide rib 39 is set as a minimum necessary limit, and the side surfaces of the base portion 31c and the frame portion 34 of the movable terminal 24 are guided by the guide rib 39 so as not to move freely. This is because the sliding movement of the slide piece 23 and the movable terminal 24 in the lateral direction is restricted by the guide rib 39 so that the contact state of the movable terminal 24 with the fixed terminal 25 is prevented from being unstable, and switching is performed stably. It is.
[0033]
A holding mechanism is provided between the slide piece 23 and the front case 8a (inner case 1A) in order to hold the slide piece 23 at each on / off position and to give a click feeling during switching. In FIG. 11, the movement mechanism includes a pair of movement portions 32 of the slide piece 23 and a movement protrusion 40 provided on the inner surface of the front case 8a. As shown in FIG. 6, the joint protrusion 40 is provided on the opening edge of the front case 8 a so as to be opposed to the left and right by using an opening formed in the peripheral wall of the front case 8 a. The peripheral wall of the inner case 8a is formed in a semicircular cross section, but the left and right sides of the slide range of the slide piece 23 are slightly recessed from the inner peripheral surface of the inner case 8a. Furthermore, the joint protrusion 40 protrudes slightly from the inner peripheral surface of the inner case 8a. Therefore, the lower corner of the protrusion 33 of the joint portion 32 and the upper corner of the joint projection 40 wrap in the sliding direction as shown in FIG. Therefore, when the operation knob 6 is slid up and down, the projecting piece 33 gets over the joint projection 40 while elastically deforming the joint portion 32 in the right and left direction.
[0034]
As shown in FIG. 9, when the operation knob 6 is slid upward and switched to the on state, the passive piece 41 provided at the upper end of the slide piece 23 opens the opening 42 provided in the step portion for the cap 7 of the front case 8a. Project to the area covered by the cap 7. Therefore, when the cap 7 is attached to the case body 1 while the operation knob 6 is kept on, the slide piece 23 and the operation knob 6 are forcibly returned to the off position by the cap 7, and the battery 5 is wasted. It can prevent being consumed. Further, the operation button 6 can be well prevented from being switched to the on position while the cap 7 is attached.
[0035]
The decorative sheet 13 interposed between the inner case 1A and the outer case 1B is composed of a single sheet, and is wound along the peripheral surface between the two cases 1A and 1B. For this reason, the decorative sheet 13 may move in the circumferential direction. In this embodiment, however, the decorative sheet 13 receives the slit 29 provided in the decorative sheet 13 as shown in FIG. Is prevented from moving in the circumferential direction.
[0036]
13 and 14 show modifications of the engaging structure of the inner and outer coupling bodies 31 and 37, respectively. In FIG. 13 (reference example) , the outer coupling body 37 is formed of a pair of left and right arm pieces, and the engaging claws 37a are provided in an opposing manner on the inner surfaces of the front ends of both arm pieces. Moreover, the inner connection body 31 was formed with one arm piece, and the engagement step part 31a was formed in the left-right side surface near the protrusion. In this case, the expansion deformation of the outer coupling body 37 can be reliably restricted by the inner case 1A and the guide groove 22 provided in the outer case 1B. The outer coupling body 37 also serves to prevent the movable terminal 24 that is externally fitted to the inner coupling body 31 from floating.
[0037]
In FIG. 14 (reference embodiment) , the inner coupling body 31 is formed by a pair of left and right arm pieces, and an engagement claw 31b is provided at the tip, and this engagement claw 31b is engaged with the engagement step of the outer surface recess of the operation knob 6. The part 37b can be received and engaged. The outer surface recess of the operation knob 6 is closed with a cover plate 44 provided separately.
[0038]
FIG. 15 shows another embodiment of the switch structure. There, an assembly groove 45 wider than the guide groove 22 is provided at the lower end of the guide groove 22 so that the outer connection body 37 can be press-fitted and engaged with the inner connection body 31 in the assembly groove 45. After the bodies 31 and 37 are engaged and connected, the operation knob 6 and the slide piece 23 are slid to the original on / off region. Reference numeral 46 denotes a protrusion for receiving the operation knob 6 in the off position. As described above, when the coupling bodies 31 and 37 are press-fitted and engaged in the assembly groove 45, the guide grooves 22 and the coupling grooves 31 and 37 are compared with the case where the coupling bodies 31 and 37 are press-fitted and engaged in the guide groove 22. Since the left and right clearances between the two connected bodies 31 and 37 can be minimized, it is possible to reliably restrict the left and right movement of the operation knob 6 and the slide piece 23 when switching the switches. Switching can be stably performed while avoiding unstable contact state.
[0039]
In addition to the above embodiment, the slide piece 23 can be slid and guided by the flat surface of the circuit board disposed adjacent to the motor 4 and the guide groove 22. Both the inner and outer coupling bodies 31 and 37 can be constituted by holes and protrusions that are press-fitted together. The inner coupling body 31 can be formed in an endless annular shape or a frame shape or an annular shape in which a part of the periphery is interrupted, in addition to the endless frame shape. The moderation mechanism can be changed as shown in FIG. There, a projecting portion 32 that elastically deforms in the left-right direction is provided on the side of the sliding surface of the slide piece 23 with the inner case 1A, and a projecting piece 33 is provided on the outer side of the projecting end. It was. In this case, the peripheral wall of the inner case 1A that slides and guides the slide piece 23 may be flat. The wall surface of the case desired for the engagement connecting portion between the operation knob 6 and the slide piece 23 does not need to be curved and may be a flat wall. The case body 1 does not need to be double inside and outside. The switch mechanism may be structured to be switched from the 3 position to the 4 position. The joint protrusion 40 does not need to be formed using an opening formed by casting on a wall surface, and can be formed on the inner side surface using a recess provided on the wall.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along line AA in FIG.
FIG. 2 is a front view with a cap removed.
FIG. 3 is an exploded cross-sectional view in which a case and internal components are separated.
FIG. 4 is a rear view of the head unit.
FIG. 5 is an overall longitudinal side view.
FIG. 6 is an exploded perspective view of a switch mechanism.
FIG. 7 is a longitudinal sectional front view showing a driving mechanism of the blade unit.
FIG. 8 is a longitudinal side view of a main part in a switch-off state.
FIG. 9 is a longitudinal side view of a main part in a switch-on state.
FIG. 10 is a partially cutaway front view of a switch unit.
FIG. 11 is a rear view of the switch unit as seen from the inner surface side of the case.
12 is a cross-sectional view taken along line BB in FIG.
FIG. 13 is a cross-sectional view showing a reference embodiment of a connection structure of an operation knob and a slide piece.
FIG. 14 is a cross-sectional view showing a reference embodiment of a connection structure between an operation knob and a slide piece.
FIG. 15 is a cross-sectional view showing still another embodiment of the connection structure of the operation knob and the slide piece.
FIG. 16 is a cross-sectional view showing another embodiment of the moderation mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case main body 6 Operation knob 22 Guide groove 23 Slide piece 24 Movable terminal 31 Inner connection body 37 Outer connection body

Claims

A slide piece (23) having a movable terminal (24) mounted inside and outside a guide groove (22) provided in the case body (1), an operation knob (6) for sliding the slide piece (23), and Is placed,
An outer coupling body (37) and an inner coupling body (31) that are fitted and engaged with each other via a guide groove (22) are provided on the opposing surfaces of the operation knob (6) and the slide piece (23). ,
The outer connecting body (37) protrudes inward from the operation knob (6), and the inner connecting body (31) protrudes outward from the slide piece (23).
The inner connection body (31) provided in the base part (31c ) of the slide piece (23) is formed in a frame shape,
The width dimension of the inner connector (31) in the left-right direction is set smaller than that of the base part (31c), and the thickness dimension of the inner connector (31) in the inner and outer directions is that of the base part (31c). Is set larger than
The guide groove (22) is provided in a through hole portion that allows insertion of the outer connecting body (37) and an inner surface of the case main body (1), and communicates with the through hole section to connect the inner connecting body (31) and the base. And a storage part that allows the storage of the part (31c) ,
The accommodating portion is provided closer to the inner side and is provided closer to the outer side than the inner accommodating portion with a wide inner accommodating portion that allows accommodating a part of the thickness dimension in the inner and outer directions of the base portion (31c), The inner connecting body (31) is formed in a stepped shape including a narrow outer housing portion that allows accommodation of the entire thickness dimension in the inner and outer directions,
Engagement claws (37a) are provided on the left and right sides of the lower end of the outer connection body (37), and an engagement step portion (31a) for receiving the engagement claws (37a) on the inner surface of the inner space of the inner connection body (31). Due to the engagement between the engagement claws (37a) and the engagement step portion (31a), both the inner and outer coupling bodies (31, 37) are connected to the outer surface of the operation knob (6) and the slide piece (23 ) Is engaged and connected to the inner surface of
The entire engaging claw (37a) is accommodated in the space in the frame of the inner coupling body (31) ,
A switch structure for an electrical device , wherein the inner connecting body (31) and the outer connecting body (37) are engaged and connected within the thickness range of the guide groove (22) provided in the case body (1). .

Sliding piece (23) is a guide groove (22), the guide groove (22) of claim that is reciprocally slidably guided and supported out with flat peripheral surface (4a) of the motor arranged inward (4) 1 The switch structure of the electrical equipment described.

The switch structure for an electric device according to claim 1 or 2 , wherein the movable terminal (24) is fitted on the outer surface of the frame of the inner connector (31) .

The peripheral surface of the fitting engagement portion of both the inner and outer coupling bodies (31, 37) is regulated and guided so as to be unexpandable by the groove side wall (22a) of the guide groove (22). Switch structure for electrical equipment.

Base of the connecting body provided in the sliding piece (23) (31) peripheral side wall of (31c) is slid guided by the guide rib (39) projecting from the inner surface of the case body (1) according to claim Ru Tare 1 2. A switch structure of an electric device according to 2, 3 or 4.

Between the case body (1) and the slide piece (23) , there is provided a moderation mechanism for holding the switching state of the slide piece (23),
A moderation mechanism is provided integrally with the slide piece (23) and elastically deforms in the left-right direction, and a sideways projection projection (40) provided on the inner surface of the case body (1). Consists of
A protruding piece (33) is provided on the outer surface of the joint portion (32),
The joint protrusion (40) is formed to engage with the protrusion (33) at a position outside the inner surface of the protrusion (33), and the protrusion ( 33) the switch structure of electrical equipment according to claim 1, 2, 3, 4 or 5, wherein that looks like overcome articulate projection (40).

The case body (1) is composed of an inner and outer double inner case (1A) and an outer case (1B).
A decorative sheet (13) is wound between the inner case (1A) and the outer case (1B) formed of a transparent or translucent plastic material.
A slit (29) corresponding to the guide groove (22) is formed in the decorative sheet (13),
The decorative sheet (13) is fixed and held so as not to be freely movable in the circumferential direction by any of the inner and outer coupling bodies (31, 37) penetrating the slit (29) inward and outward . The switch structure of the electric device according to 4, 5 or 6 .