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JP4185183B2 - Key switch - Google Patents
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JP4185183B2 - Key switch - Google Patents

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Publication number
JP4185183B2
JP4185183B2 JP10638398A JP10638398A JP4185183B2 JP 4185183 B2 JP4185183 B2 JP 4185183B2 JP 10638398 A JP10638398 A JP 10638398A JP 10638398 A JP10638398 A JP 10638398A JP 4185183 B2 JP4185183 B2 JP 4185183B2
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JP
Japan
Prior art keywords
sliding shaft
membrane switch
support portion
link member
gear link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP10638398A
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Japanese (ja)
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JPH11288638A (en
Inventor
淳一 丸山
尚志 寺田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCL Components Ltd
Original Assignee
Fujitsu Component Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP10638398A priority Critical patent/JP4185183B2/en
Publication of JPH11288638A publication Critical patent/JPH11288638A/en
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Publication of JP4185183B2 publication Critical patent/JP4185183B2/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/02Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/12Push-buttons
    • H01H3/122Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
    • H01H3/125Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser

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  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)

Description

【0001】
【発明の属する技術分野】
本発明はパソコンやワープロを始めとする各種情報処理装置において入力端末として利用されるキーボードに係り、特にキートップのストロークを犠牲にすることなくキーボードの更なる薄型化を可能にするキースイッチに関する。
【0002】
パソコンやワープロを始めとする各種情報処理装置の携帯型化が進むにともなってキーボードの薄型化が要求されるが、例えば、薄型化のためキートップのストロークを短くするとオペレータによる入力ミスが増加する等の問題が生じる。
【0003】
そこでキートップのストロークを犠牲にすることなくキーボードの更なる薄型化が可能なキースイッチの開発が望まれている。
【0004】
【従来の技術】
図9は従来のキースイッチの主要部を示す斜視図、図10は従来のキースイッチの構造を示す側断面図である。
【0005】
従来のキースイッチは図9に示す如く一対のギヤリンク部材1を介して連結されたキートップ2および支持部3を有し、支持部3の下面にはサポートパネル4とサポートパネル4により支承されたメンブレンスイッチ5が装着されている。
【0006】
それぞれのギヤリンク部材1は摺動軸11と中間腕12を介して摺動軸11の先端近傍に連結された一対のギヤ部13とを有し、ギヤ部13は円周方向に配列された少なくとも1個の歯14と中央に設けられた摺動軸11と平行な回転軸15を具えている。
【0007】
キートップ2は下面にそれぞれ2個の軸受孔21を具えた一対の軸受部22が軸受孔21を互いに対抗させて形成されており、図10(a) の如く歯14を互いに噛み合わせた状態で隣接するギヤ部13の各回転軸15が軸受孔21に回動自在に嵌挿される。
【0008】
一方、支持部3はギヤリンク部材1が嵌入可能な切り欠き31と両側から切り欠き31の上方に突出するガイド爪32を有し、摺動軸11の両端16を摺動自在に保持するガイド爪32は先端に摺動軸11の脱落を防止するストッパ33が形成されている。
【0009】
即ち、摺動軸11の両端16は図10(a) の如くガイド爪32とメンブレンスイッチ5の間に介在する空間に嵌挿されており、ガイド爪32またはメンブレンスイッチ5が摺動軸11の両端16側面に当接しギヤリンク部材1を摺動自在に保持している。
【0010】
メンブレンスイッチ5は導体パターン形成面がスペーサ51を介して相対する2枚のフレキシブルプリント基板52を有し、図示省略されているが隙間を介して対抗する導体電極からなるスイッチ素子がキートップ2の直下に配設されている。
【0011】
図示省略されているがキートップ2とメンブレンスイッチ5との間に例えばゴム等で形成されたアクチュエータを有し、図10(a) の如くキートップ2はアクチュエータによって押し上げられ摺動軸11の両端16は中央近傍に引きつけられる。
【0012】
図10(b) に示す如くキートップ2が押下されると一対のギヤリンク部材1が回動して摺動軸11の間隔が左右に広がり、キートップ下面に当接しているアクチュエータが反転してメンブレンスイッチ5の図示省略された導体電極間が閉じる。
【0013】
キートップ2を押下している力が除去されると反転していたアクチュエータが復元してキートップ2が押し上げられ、それに伴って一対のギヤリンク部材1が反対方向に回動してそれまで左右に広がっていた摺動軸11の間隔が縮小される。
【0014】
【発明が解決しようとする課題】
図11は従来のキースイッチの問題点を示す側断面図である。
支持部3のサポートパネル4への装着は図3(a) に示す如く、メンブレンスイッチ5が貼着されたサポートパネル4にギヤリンク部材1が装着された支持部3を載置し、支持部3が有する突起34を加熱変形させる熱かしめにより行われる。
【0015】
しかし、支持部3をサポートパネル4に熱かしめした後で図11に示す如くギヤリンク部材1の装着ミスが発見されても、ギヤリンク部材1を抜き取り再装着することが不可能で他の部材を生かすため突起34を切り取る等の方法が採られる。
【0016】
熱かしめによってサポートパネル4に装着される支持部3は突起34が切り取られるとサポートパネル4に装着できず、そこで突起34が切り取られた支持部3を突起34を具えた新しい支持部3と交換しなければならないという問題があった。
【0017】
本発明の目的はギヤリンク部材の交換を可能にし部材の歩留り向上を図ったキースイッチを提供することにある。
【0018】
【課題を解決するための手段】
図1は本発明になるキースイッチの主要部を示す斜視図であり、図4は本発明の別の実施例を示す斜視図である。なお全図を通し同じ対象物は同一記号で表している。
【0019】
上記課題はサポートパネル4に装着されサポートパネル4との間にメンブレンスイッチ5が挟持される支持部7と、支持部7によって摺動自在に保持されキートップを上下動可能に支承する一対のギヤリンク部材6とを有し、ギヤリンク部材6は、摺動軸61と、円周方向に配列された少なくとも1個の歯14を具えた一対のギヤ部13と、ギヤ部13を摺動軸61に連結する一対の中間腕12とを有し、支持部7は、ギヤリンク部材6が嵌入可能な切り欠き31と、切り欠き31の上方に位置し摺動軸61の両端62を、メンブレンスイッチ5上面を摺動面として摺動自在に保持する少なくとも一端が支持部7に固着されたガイド爪32と、ガイド爪32の摺動軸61が摺動する方向における切り欠き31の中央側の他端に形成され摺動軸61の脱落を防止するストッパ71とを有するキースイッチにおいて、摺動軸61は、ガイド爪32によって保持される領域に、摺動軸61の軸心を通る平面63により切除され、軸心に垂直な断面が半円形をなす摺動軸61の両端62を具え、摺動軸61の両端62は、該中間腕12を該メンブレンスイッチ5上面に接するまで倒したとき、平面63が上向きにかつメンブレンスイッチ5上面に平行に保持されるように形成され、支持部7は、中間腕12をメンブレンスイッチ5上面に倒したまま摺動軸61をメンブレンスイッチ5上面で摺動させたとき摺動軸61の両端62が着脱可能に通過する隙間72を、ストッパ71とメンブレンスイッチ5との間に具えている本発明のキースイッチによって達成される。
【0020】
このようにギヤリンク部材をメンブレンスイッチに接するまで倒したとき、摺動軸は一端の断面形状が上側に平面を有する半円形をなし、他端の断面形状が下側に平面を有する半円形をなし、かつ、支持部7は、ストッパとメンブレンスイッチとの間に、上側に平面を有する摺動軸の一端が着脱可能に通過する隙間を具えている本発明のキースイッチは、支持部をサポートパネルに熱かしめした後にギヤリンク部材の装着ミスが発見された場合も、ギヤリンク部材を水平に倒すことによって容易に交換でき、しかもギヤリンク部材をキートップに装着することによって、ガイド爪またはメンブレンスイッチが半円形の摺動軸に当接し摺動自在に保持することができる。
【0021】
即ち、ギヤリンク部材の交換を可能にし部材の歩留り向上を図ったキースイッチを実現することができる。
【0022】
【発明の実施の形態】
以下添付図により本発明の実施例について詳細に説明する。なお、図2は本発明になるキースイッチの構造を示す側断面図、図3は本発明になるキースイッチの作用を説明する模式図、図4は本発明の別の実施例を示す斜視図、図5は別の実施例が有する第1の作用を説明する模式図、図6は別の実施例が有する第2の作用を説明する模式図、図7は本発明の更に別の実施例を示す斜視図、図8は本発明の更に別の実施例の作用を説明する模式図である。
【0023】
本発明になるキースイッチは図1に示す如くギヤリンク部材6を介して連結されたキートップ2および支持部7を有し、支持部7の下面にはサポートパネル4とサポートパネル4により支承されたメンブレンスイッチ5が装着されている。
【0024】
それぞれのギヤリンク部材6は摺動軸61と中間腕12を介して摺動軸61の先端近傍に連結された一対のギヤ部13とを有し、ギヤ部13は円周方向に配列された少なくとも1個の歯14と中央に設けられた摺動軸61と平行な回転軸15を具えている。
【0025】
摺動軸61は両端がそれぞれ軸心を通る平面63を境界としていずれか一方が切除された半円形状の断面を具えており、中間腕12がメンブレンスイッチ5に接するまで倒したとき一端62a は上側に平面63を、他端62b は下側に平面63を有する。
【0026】
キートップ2は下面にそれぞれ2個の軸受孔21を具えた一対の軸受部22が軸受孔21を互いに対抗させて形成されており、図2(a) の如く歯14を互いに噛み合わせた状態で隣接するギヤ部13の各回転軸15が軸受孔21に回動自在に嵌挿される。
【0027】
一方、支持部7はギヤリンク部材6が嵌入可能な切り欠き31と両側から切り欠き31の上方に突出するガイド爪32を有し、摺動軸61の両端62を摺動自在に保持するガイド爪32は先端に摺動軸61の脱落を防止するストッパ71が形成されている。
【0028】
即ち、摺動軸61の端部62a、bは図2(a) の如くガイド爪32とメンブレンスイッチ5の間に介在する空間に嵌挿され、ガイド爪32またはメンブレンスイッチ5が摺動軸61の両端の側面に当接しギヤリンク部材6を摺動自在に保持している。
【0029】
メンブレンスイッチ5は導体パターン形成面がスペーサ51を介して相対する2枚のフレキシブルプリント基板52を有し、図示省略されているが隙間を介して対抗する導体電極からなるスイッチ素子がキートップ2の直下に配設されている。
【0030】
図示省略されているがキートップ2とメンブレンスイッチ5との間に例えばゴム等で形成されたアクチュエータを有し、図2(a) の如くキートップ2はアクチュエータにより押し上げられ摺動軸61は支持部7の中央近傍に引きつけられる。
【0031】
図2(b) に示す如くキートップ2が押下されると一対のギヤリンク部材6が回動して摺動軸61の間隔が左右に広がり、キートップ下面に当接しているアクチュエータが反転してメンブレンスイッチ5の図示省略された導体電極間が閉じる。
【0032】
キートップ2を押下している力が除去されると反転していたアクチュエータが復元してキートップ2が押し上げられ、それに伴って一対のギヤリンク部材6が反対方向に回動してそれまで左右に広がっていた摺動軸61の間隔が縮小される。
【0033】
ストッパ71とメンブレンスイッチ5の間に上側に平面63を有する摺動軸61の一端62aが通過可能な隙間72が形成され、ギヤリンク部材6を水平に倒すと摺動軸61の一端62aを図3(a) に示す如く隙間72を通し任意に抜去することができる。
【0034】
また、ギヤリンク部材6を支持部7に装着する際は図3(b) に示す如く、隙間72に摺動軸61の一端62aを覗かせると共に矢印方向に押し込むことで、摺動軸61の一端62aは図3(c) に示す如く隙間72を通過しガイド爪32により保持される。
【0035】
本発明になるキースイッチの別の実施例は図4に示す如くキートップ2および支持部7がギヤリンク部材6で連結され、支持部7の下面にはサポートパネル4とサポートパネル4により支承されたメンブレンスイッチ5が装着されている。
【0036】
それぞれのギヤリンク部材6は摺動軸61と中間腕12を介して摺動軸61の先端近傍に連結された一対のギヤ部13とを有し、ギヤ部13は円周方向に配列された少なくとも1個の歯14と中央に設けられた摺動軸61と平行な回転軸15を具えている。
【0037】
前記実施例と異なり摺動軸61は両端64がそれぞれ軸心を通る平面63の一方が切除されて断面が半円形状をなしており、正しく装着されたギヤリンク部材の中間腕12がメンブレンスイッチ5に接するまで倒したとき平面63が上方に位置する。
【0038】
一方、支持部7は前記実施例のガイド爪32に代えて自由端にストッパ71が形成され他端が固着されたガイド爪35を有し、ストッパ71を有する側を持ち上げることによりストッパ71とメンブレンスイッチ5の隙間72を拡張することができる。
【0039】
ギヤリンク部材6を支持部7から抜去する際は図5(a) 乃至(c) に示す如くギヤリンク部材6を水平に倒すことにより、平面63が上方に位置した摺動軸61の両端64がストッパ71とメンブレンスイッチ5との隙間72を通過し抜去可能である。
【0040】
また、ギヤリンク部材6が裏返しに装着されると図5(d) に示す如く平面63が下方に位置するため抜去が不能になるが、ガイド爪35のストッパ71を有する側を持ち上げることにより隙間72が拡張され摺動軸61を抜去することが可能になる。
【0041】
更に、自由端にストッパ71が形成され他端が固着されたガイド爪35を有する支持部7を具えた本発明のキースイッチは、摺動軸先端の断面が半円形状ではない従来のギヤリンク部材1を用いた場合も摺動軸を容易に支持部から抜去できる。
【0042】
即ち、ギヤリンク部材1を支持部7から抜去する際は、図6(a) 乃至(c) に示す如くガイド爪35のストッパ71を有する側を持ち上げることによって、ストッパ71とメンブレンスイッチ5の隙間72が拡張されて摺動軸11を容易に抜去できる。
【0043】
本発明の更に別の実施例は図7に示す如くギヤリンク部材6に代えて中間腕間が拡縮可能なギヤリンク部材8を有し、ギヤリンク部材8は従来の支持部3と組み合わせても中間腕間を拡縮することで容易に脱着が可能な構造を具えている。
【0044】
即ち、ギヤリンク部材8は従来のギヤリンク部材1と同様に両端に摺動軸11とギヤ部13を具えた一対の中間腕12を有し、ギヤ部13は円周方向に配列された少なくとも1個の歯14と中央に設けられた摺動軸11と平行な回転軸15を具えている。
【0045】
しかし、従来のギヤリンク部材1と異なり摺動軸11は両端部のみで一対の中間腕12の間は摺動軸11が削除されており、中間腕12は摺動軸11に代えてギヤリンク部材成形時に一体成形された可撓性を有する結合部材81により連結されている。
【0046】
図8(a) に示す如く従来の支持部に装着されガイド爪32により保持されているギヤリンク部材8の摺動軸11の抜去は、図8(b) に示す如く中間腕12の一方を押し拡げると摺動軸11を有する側が狭まりガイド爪32から抜去することができる。
【0047】
このようにギヤリンク部材をメンブレンスイッチに接するまで倒したとき、摺動軸は一端の断面形状が上側に平面を有する半円形をなし、他端の断面形状が下側に平面を有する半円形をなし、かつ、支持部は、ストッパとメンブレンスイッチとの間に、上側に平面を有する摺動軸の一端が着脱可能に通過する隙間を具えている本発明のキースイッチは、支持部をサポートパネルに熱かしめした後にギヤリンク部材の装着ミスが発見された場合も、ギヤリンク部材を水平に倒すことによって容易に交換でき、しかもギヤリンク部材をキートップに装着することによって、ガイド爪またはメンブレンスイッチが半円形の摺動軸に当接し摺動自在に保持することができる。
【0048】
なお、説明を簡略にするため本発明は、メンブレンスイッチが支持部の下面に直接接触し、ギヤリンク部材の摺動軸が、ガイド爪とメンブレンスイッチの間に摺動自在に保持されるキースイッチを対象としているが、例えば、複数のアクチュエータを一体化するためのシートやフィルムが、メンブレンスイッチと支持部との間に介在し、ギヤリンク部材の摺動軸がガイド爪とシートやフィルムとの間に保持されるキースイッチに適用しても同等の効果を得ることができる。
【0049】
【発明の効果】
上述の如く本発明によればギヤリンク部材の交換を可能にし部材の歩留り向上を図ったキースイッチを提供することができる。
【図面の簡単な説明】
【図1】 本発明になるキースイッチの主要部を示す斜視図である。
【図2】 本発明になるキースイッチの構造を示す側断面図である。
【図3】 本発明になるキースイッチの作用を説明する模式図である。
【図4】 本発明の別の実施例を示す斜視図である。
【図5】 別の実施例が有する第1の作用を説明する模式図である。
【図6】 別の実施例が有する第2の作用を説明する模式図である。
【図7】 本発明の更に別の実施例を示す斜視図である。
【図8】 本発明の更に別の実施例の作用を説明する模式図である。
【図9】 従来のキースイッチの主要部を示す斜視図である。
【図10】 従来のキースイッチの構造を示す側断面図である。
【図11】 従来のキースイッチの問題点を示す側断面図である。
【符号の説明】
1 ギヤリンク部材 2 キートップ
4 サポートパネル 5 メンブレンスイッチ
6 ギヤリンク部材 7 支持部
8 ギヤリンク部材 11 摺動軸
12 中間腕 13 ギヤ部
14 歯 15 回転軸
16 両端 21 軸受孔
22 軸受部 31 切り欠き
32 ガイド爪 35 ガイド爪
51 スペーサ 52 フレキシブルプリント基板
61 摺動軸 62a 摺動軸の一端
62b 摺動軸の他端 63 平面
64 摺動軸の両端 71 ストッパ
72 隙間 81 結合部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a keyboard used as an input terminal in various information processing apparatuses such as a personal computer and a word processor, and more particularly to a key switch that enables further thinning of the keyboard without sacrificing the stroke of the key top.
[0002]
As information processing devices such as personal computers and word processors become more portable, the keyboard needs to be thinner. For example, if the keytop stroke is shortened to reduce the thickness, operator input errors will increase. Such problems arise.
[0003]
Therefore, it is desired to develop a key switch that can further reduce the thickness of the keyboard without sacrificing the stroke of the key top.
[0004]
[Prior art]
FIG. 9 is a perspective view showing the main part of a conventional key switch, and FIG. 10 is a side sectional view showing the structure of the conventional key switch.
[0005]
As shown in FIG. 9, the conventional key switch has a key top 2 and a support portion 3 connected via a pair of gear link members 1, and is supported by the support panel 4 and the support panel 4 on the lower surface of the support portion 3. A membrane switch 5 is attached.
[0006]
Each gear link member 1 has a sliding shaft 11 and a pair of gear portions 13 connected to the vicinity of the tip of the sliding shaft 11 via an intermediate arm 12, and the gear portions 13 are arranged in the circumferential direction. At least one tooth 14 and a rotating shaft 15 parallel to the sliding shaft 11 provided in the center are provided.
[0007]
The key top 2 is formed with a pair of bearing portions 22 each having two bearing holes 21 on the lower surface so that the bearing holes 21 oppose each other, and the teeth 14 mesh with each other as shown in FIG. 10 (a). Thus, the rotating shafts 15 of the adjacent gear portions 13 are rotatably inserted into the bearing holes 21.
[0008]
On the other hand, the support part 3 has a notch 31 into which the gear link member 1 can be fitted and a guide claw 32 protruding above the notch 31 from both sides, and a guide for slidably holding both ends 16 of the slide shaft 11. A stopper 33 for preventing the sliding shaft 11 from dropping off is formed at the tip of the claw 32.
[0009]
That is, both ends 16 of the sliding shaft 11 are inserted into a space interposed between the guide claw 32 and the membrane switch 5 as shown in FIG. 10A, and the guide claw 32 or the membrane switch 5 is attached to the sliding shaft 11. The gear link member 1 is slidably held in contact with the side surfaces of both ends 16.
[0010]
The membrane switch 5 includes two flexible printed circuit boards 52 whose conductor pattern forming surfaces are opposed to each other with a spacer 51 interposed therebetween. Although not shown in the drawing, a switch element made of a conductor electrode that opposes through a gap is the key top 2. It is arranged directly below.
[0011]
Although not shown, an actuator formed of rubber or the like is provided between the key top 2 and the membrane switch 5, and the key top 2 is pushed up by the actuator as shown in FIG. 16 is attracted near the center.
[0012]
When the key top 2 is pushed down as shown in FIG. 10 (b), the pair of gear link members 1 rotate, the distance between the sliding shafts 11 is widened to the left and right, and the actuator in contact with the lower surface of the key top is reversed. Thus, the conductor electrodes (not shown) of the membrane switch 5 are closed.
[0013]
When the force pressing the key top 2 is removed, the actuator that has been reversed is restored and the key top 2 is pushed up, and the pair of gear link members 1 rotate in the opposite direction and the left and right until then. The distance between the sliding shafts 11 that has spread is reduced.
[0014]
[Problems to be solved by the invention]
FIG. 11 is a side sectional view showing a problem of a conventional key switch.
As shown in FIG. 3A, the support portion 3 is mounted on the support panel 4 by placing the support portion 3 on which the gear link member 1 is mounted on the support panel 4 to which the membrane switch 5 is attached. 3 is performed by heat caulking to deform the protrusions 34 of the heat sink 3.
[0015]
However, even if a mounting error of the gear link member 1 is discovered after the support portion 3 is heat-caulked to the support panel 4 as shown in FIG. 11, the gear link member 1 cannot be removed and remounted. For example, a method of cutting the projection 34 is used.
[0016]
The support part 3 attached to the support panel 4 by heat caulking cannot be attached to the support panel 4 when the protrusion 34 is cut out, and the support part 3 from which the protrusion 34 is cut is replaced with a new support part 3 having the protrusion 34. There was a problem that had to be done.
[0017]
SUMMARY OF THE INVENTION An object of the present invention is to provide a key switch capable of exchanging gear link members and improving the yield of the members.
[0018]
[Means for Solving the Problems]
FIG. 1 is a perspective view showing a main part of a key switch according to the present invention, and FIG. 4 is a perspective view showing another embodiment of the present invention . Throughout the drawings, the same object is represented by the same symbol.
[0019]
The above-described problems are a support portion 7 that is attached to the support panel 4 and the membrane switch 5 is sandwiched between the support panel 4 and a pair of gears that are slidably supported by the support portion 7 and that support the key top so as to be movable up and down. The link member 6 includes a slide shaft 61, a pair of gear portions 13 having at least one tooth 14 arranged in the circumferential direction, and the gear portion 13 as a slide shaft. The support portion 7 has a notch 31 into which the gear link member 6 can be fitted, and both ends 62 of the slide shaft 61 positioned above the notch 31 with a membrane. A guide claw 32 having at least one end fixed to the support portion 7 slidably holding the upper surface of the switch 5 as a sliding surface, and a center side of the notch 31 in the direction in which the sliding shaft 61 of the guide claw 32 slides. sliding shaft formed at the other end In the key switch having the stopper 71 for preventing the dropout of the sliding shaft 61, the sliding shaft 61 is cut by a plane 63 passing through the axis of the sliding shaft 61 in a region held by the guide claw 32 and perpendicular to the shaft center. Both ends 62 of the sliding shaft 61 have a semicircular cross section, and the both ends 62 of the sliding shaft 61 are flat when the intermediate arm 12 is brought into contact with the upper surface of the membrane switch 5 and the flat surface 63 faces upward. The support portion 7 is formed so as to be held parallel to the upper surface of the switch 5, and the support portion 7 is configured to slide the sliding shaft 61 on the upper surface of the membrane switch 5 while the intermediate arm 12 is tilted on the upper surface of the membrane switch 5. This is achieved by the key switch of the present invention having a gap 72 through which both ends 62 of the first and second ends 62 pass detachably between the stopper 71 and the membrane switch 5.
[0020]
Thus, when the gear link member is tilted until it contacts the membrane switch, the sliding shaft has a semicircular shape in which the cross-sectional shape of one end has a flat surface on the upper side, and the cross-sectional shape of the other end has a semicircular shape having a flat surface on the lower side. None, and the support part 7 is provided with a gap between the stopper and the membrane switch through which one end of a sliding shaft having a flat surface on the upper side is detachably passed. The key switch of the present invention supports the support part. Even if a gear link member mounting error is discovered after heat staking the panel, it can be easily replaced by tilting the gear link member horizontally, and by attaching the gear link member to the key top, the guide claw or membrane The switch can be slidably held in contact with the semicircular sliding shaft.
[0021]
That is, it is possible to realize a key switch that allows the gear link member to be replaced and improves the yield of the member.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 2 is a side sectional view showing the structure of the key switch according to the present invention, FIG. 3 is a schematic view for explaining the operation of the key switch according to the present invention, and FIG. 4 is a perspective view showing another embodiment of the present invention. FIG. 5 is a schematic diagram for explaining a first action of another embodiment, FIG. 6 is a schematic view for explaining a second action of another embodiment, and FIG. 7 is still another embodiment of the present invention. FIG. 8 is a schematic view for explaining the operation of still another embodiment of the present invention.
[0023]
The key switch according to the present invention has a key top 2 and a support portion 7 connected via a gear link member 6 as shown in FIG. 1, and is supported by the support panel 4 and the support panel 4 on the lower surface of the support portion 7. A membrane switch 5 is attached.
[0024]
Each gear link member 6 has a sliding shaft 61 and a pair of gear portions 13 connected to the vicinity of the tip of the sliding shaft 61 via the intermediate arm 12, and the gear portions 13 are arranged in the circumferential direction. It has at least one tooth 14 and a rotating shaft 15 parallel to a sliding shaft 61 provided in the center.
[0025]
The sliding shaft 61 has a semicircular cross-section in which either end is cut off with a plane 63 passing through the axis as a boundary. When the intermediate arm 12 is tilted until it contacts the membrane switch 5, one end 62a is The upper surface has a flat surface 63 and the other end 62b has a lower surface with a flat surface 63.
[0026]
The key top 2 is formed with a pair of bearing portions 22 each having two bearing holes 21 on the lower surface so that the bearing holes 21 face each other, and the teeth 14 mesh with each other as shown in FIG. Thus, the rotating shafts 15 of the adjacent gear portions 13 are rotatably inserted into the bearing holes 21.
[0027]
On the other hand, the support portion 7 has a notch 31 into which the gear link member 6 can be fitted and a guide claw 32 that protrudes above the notch 31 from both sides, and guides that hold both ends 62 of the slide shaft 61 slidably. The claw 32 has a stopper 71 that prevents the sliding shaft 61 from falling off at the tip.
[0028]
That is, the end portions 62a and b of the sliding shaft 61 are inserted into a space interposed between the guide claw 32 and the membrane switch 5 as shown in FIG. 2A, and the guide claw 32 or the membrane switch 5 is inserted into the sliding shaft 61. The gear link member 6 is slidably held in contact with the side surfaces of both ends of the gear.
[0029]
The membrane switch 5 includes two flexible printed circuit boards 52 whose conductor pattern forming surfaces are opposed to each other with a spacer 51 interposed therebetween. Although not shown in the drawing, a switch element made of a conductor electrode that opposes through a gap is the key top 2. It is arranged directly below.
[0030]
Although not shown in the drawings, an actuator formed of, for example, rubber is provided between the key top 2 and the membrane switch 5, and the key top 2 is pushed up by the actuator and the slide shaft 61 is supported as shown in FIG. It is attracted to the vicinity of the center of the part 7.
[0031]
As shown in FIG. 2B, when the key top 2 is depressed, the pair of gear link members 6 are rotated, the distance between the sliding shafts 61 is widened to the left and right, and the actuator in contact with the lower surface of the key top is reversed. Thus, the conductor electrodes (not shown) of the membrane switch 5 are closed.
[0032]
When the force pressing down the key top 2 is removed, the actuator that has been reversed is restored and the key top 2 is pushed up, and the pair of gear link members 6 are rotated in the opposite direction accordingly, and left and right until then. The distance between the sliding shafts 61 that has spread to is reduced.
[0033]
A gap 72 is formed between the stopper 71 and the membrane switch 5 through which the one end 62a of the sliding shaft 61 having the upper surface 63 can pass. When the gear link member 6 is tilted horizontally, the one end 62a of the sliding shaft 61 is illustrated. As shown in 3 (a), it can be arbitrarily removed through the gap 72.
[0034]
Further, when the gear link member 6 is attached to the support portion 7, as shown in FIG. 3 (b), one end 62a of the sliding shaft 61 can be looked into the gap 72 and pushed in the direction of the arrow, so that the sliding shaft 61 The one end 62a passes through the gap 72 and is held by the guide claw 32 as shown in FIG.
[0035]
In another embodiment of the key switch according to the present invention, as shown in FIG. 4, the key top 2 and the support portion 7 are connected by a gear link member 6. A membrane switch 5 is attached.
[0036]
Each gear link member 6 has a sliding shaft 61 and a pair of gear portions 13 connected to the vicinity of the tip of the sliding shaft 61 via the intermediate arm 12, and the gear portions 13 are arranged in the circumferential direction. It has at least one tooth 14 and a rotating shaft 15 parallel to a sliding shaft 61 provided in the center.
[0037]
Unlike the above embodiment, the sliding shaft 61 has both ends 64 each having one half of a plane 63 passing through the axial center and a semicircular cross section, and the intermediate arm 12 of the gear link member that is correctly mounted is a membrane switch. When it is brought down to contact 5, the plane 63 is positioned upward.
[0038]
On the other hand, the support portion 7 has a guide claw 35 in which a stopper 71 is formed at the free end and the other end is fixed instead of the guide claw 32 of the above embodiment, and the stopper 71 and the membrane are lifted by lifting the side having the stopper 71. The gap 72 of the switch 5 can be expanded.
[0039]
When the gear link member 6 is removed from the support portion 7, the gear link member 6 is horizontally tilted as shown in FIGS. Can pass through the gap 72 between the stopper 71 and the membrane switch 5 and can be removed.
[0040]
Further, when the gear link member 6 is mounted upside down, the flat surface 63 is positioned below as shown in FIG. 5 (d), so that it cannot be removed. However, by lifting the side of the guide claw 35 having the stopper 71, the gap 72 is expanded so that the sliding shaft 61 can be removed.
[0041]
Further, the key switch of the present invention having the support portion 7 having the guide claw 35 formed with the stopper 71 at the free end and fixed at the other end is a conventional gear link whose cross section at the tip of the sliding shaft is not semicircular. Even when the member 1 is used, the sliding shaft can be easily removed from the support portion.
[0042]
That is, when the gear link member 1 is removed from the support portion 7, the gap between the stopper 71 and the membrane switch 5 is lifted by lifting the side of the guide claw 35 having the stopper 71 as shown in FIGS. 6 (a) to 6 (c). 72 is expanded and the sliding shaft 11 can be easily removed.
[0043]
Still another embodiment of the present invention has a gear link member 8 capable of expanding and contracting between the intermediate arms instead of the gear link member 6 as shown in FIG. 7, and the gear link member 8 may be combined with the conventional support portion 3. It has a structure that can be easily detached by expanding and contracting between the intermediate arms.
[0044]
That is, the gear link member 8 has a pair of intermediate arms 12 each having a sliding shaft 11 and a gear portion 13 at both ends like the conventional gear link member 1, and the gear portion 13 is at least arranged in the circumferential direction. One tooth 14 and a rotating shaft 15 parallel to the sliding shaft 11 provided at the center are provided.
[0045]
However, unlike the conventional gear link member 1, the sliding shaft 11 is only at both ends, and the sliding shaft 11 is omitted between the pair of intermediate arms 12. The intermediate arm 12 is a gear link instead of the sliding shaft 11. They are connected by a flexible coupling member 81 that is integrally formed at the time of molding the member.
[0046]
As shown in FIG. 8 (a), the sliding shaft 11 of the gear link member 8 mounted on the conventional support portion and held by the guide claw 32 is removed by removing one of the intermediate arms 12 as shown in FIG. 8 (b). When expanded, the side having the sliding shaft 11 narrows and can be removed from the guide claw 32.
[0047]
Thus, when the gear link member is tilted until it contacts the membrane switch, the sliding shaft has a semicircular shape in which the cross-sectional shape of one end has a flat surface on the upper side, and the cross-sectional shape of the other end has a semicircular shape having a flat surface on the lower side. None, and the support part is provided with a gap between the stopper and the membrane switch through which one end of a sliding shaft having a flat surface on the upper side is detachably passed. Even if a gear link member mounting error is discovered after heat staking, it can be easily replaced by tilting the gear link member horizontally, and by attaching the gear link member to the key top, a guide claw or membrane switch Can abut against the semicircular sliding shaft and can be slidably held.
[0048]
In order to simplify the description, the present invention provides a key switch in which the membrane switch is in direct contact with the lower surface of the support portion, and the sliding shaft of the gear link member is slidably held between the guide claw and the membrane switch. For example, a sheet or film for integrating a plurality of actuators is interposed between the membrane switch and the support portion, and the sliding shaft of the gear link member is connected between the guide claw and the sheet or film. Even if applied to a key switch held between them, the same effect can be obtained.
[0049]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a key switch in which the gear link member can be replaced and the yield of the member is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main part of a key switch according to the present invention.
FIG. 2 is a side sectional view showing a structure of a key switch according to the present invention.
FIG. 3 is a schematic diagram for explaining the operation of the key switch according to the present invention.
FIG. 4 is a perspective view showing another embodiment of the present invention.
FIG. 5 is a schematic diagram for explaining a first action of another embodiment.
FIG. 6 is a schematic diagram for explaining a second action of another embodiment.
FIG. 7 is a perspective view showing still another embodiment of the present invention.
FIG. 8 is a schematic diagram for explaining the operation of still another embodiment of the present invention.
FIG. 9 is a perspective view showing a main part of a conventional key switch.
FIG. 10 is a side sectional view showing a structure of a conventional key switch.
FIG. 11 is a side sectional view showing a problem of a conventional key switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gear link member 2 Key top 4 Support panel 5 Membrane switch 6 Gear link member 7 Support part 8 Gear link member 11 Slide shaft
12 Intermediate arm 13 Gear section
14 teeth 15 rotation axis
16 Both ends 21 Bearing hole
22 Bearing 31 Notch
32 Guide claw 35 Guide claw
51 Spacer 52 Flexible printed circuit board
61 Slide shaft 62a One end of slide shaft
62b The other end of the sliding shaft 63 Plane
64 Both ends of sliding shaft 71 Stopper
72 Clearance 81 Connecting member

Claims (1)

サポートパネルに装着され該サポートパネルとの間にメンブレンスイッチが挟持される支持部と、該支持部によって摺動自在に保持されキートップを上下動可能に支承する一対のギヤリンク部材とを有し、
該ギヤリンク部材は、摺動軸と、円周方向に配列された少なくとも1個の歯を具えた一対のギヤ部と、該ギヤ部を該摺動軸に連結する一対の中間とを有し、
該支持部は、該ギヤリンク部材が嵌入可能な切り欠きと、該切り欠きの上方に位置し該摺動軸の両端を、該メンブレンスイッチ上面を摺動面として摺動自在に保持する少なくとも一端が該支持部に固着されたガイド爪と、該ガイド爪の該摺動軸が摺動する方向における該切り欠きの中央側の他端に形成され該摺動軸の脱落を防止するストッパとを有するキースイッチにおいて、
該摺動軸は、該ガイド爪によって保持される領域に、該摺動軸の軸心を通る平面により切除され、該軸心に垂直な断面が半円形をなす該摺動軸の両端を具え、
該摺動軸の両端は、該中間を該メンブレンスイッチ上面に接するまで倒したとき、該平面が上向きにかつ該メンブレンスイッチ上面に平行に保持されるように形成され、
該支持部は、該中間を該メンブレンスイッチ上面に倒したまま該摺動軸を該メンブレンスイッチ上面で摺動させたとき該摺動軸の両端が着脱可能に通過する隙間を、該ストッパと該メンブレンスイッチとの間に具えていることを特徴とするキースイッチ。
A support portion mounted on the support panel and holding the membrane switch between the support panel; and a pair of gear link members that are slidably supported by the support portion and support the key top so as to be movable up and down. ,
The gear link member has a sliding shaft, a pair of gear portions having at least one tooth arranged in the circumferential direction, and a pair of intermediate arms connecting the gear portion to the sliding shaft. And
The support portion includes a notch into which the gear link member can be fitted, and at least one end which is located above the notch and holds both ends of the sliding shaft slidably with the upper surface of the membrane switch as a sliding surface. A guide claw fixed to the support portion , and a stopper formed at the other end on the center side of the notch in the sliding direction of the slide claw of the guide claw to prevent the slide shaft from falling off. In the key switch that has
The sliding shaft is cut in a region held by the guide claw by a plane passing through the axial center of the sliding shaft, and has both ends of the sliding shaft having a semicircular cross section perpendicular to the axial center. ,
Both ends of the sliding shaft are formed so that the plane is held upward and parallel to the upper surface of the membrane switch when the intermediate arm is tilted until it comes into contact with the upper surface of the membrane switch,
The support portion has a gap through which both ends of the sliding shaft removably pass when the sliding shaft is slid on the upper surface of the membrane switch while the intermediate arm is tilted on the upper surface of the membrane switch. A key switch provided between the membrane switch and the membrane switch.
JP10638398A 1998-02-03 1998-04-16 Key switch Expired - Lifetime JP4185183B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10638398A JP4185183B2 (en) 1998-02-03 1998-04-16 Key switch

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2185798 1998-02-03
JP10-21857 1998-02-03
JP10638398A JP4185183B2 (en) 1998-02-03 1998-04-16 Key switch

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JPH11288638A JPH11288638A (en) 1999-10-19
JP4185183B2 true JP4185183B2 (en) 2008-11-26

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Publication number Priority date Publication date Assignee Title
JP5072904B2 (en) * 2009-05-11 2012-11-14 富士通コンポーネント株式会社 Key switch device and keyboard
JP5784887B2 (en) * 2010-09-01 2015-09-24 株式会社Nttファシリティーズ Solar cell panel mount and solar cell device
JP2015201424A (en) * 2014-04-02 2015-11-12 アルプス電気株式会社 key switch and keyboard device
US11538644B2 (en) 2019-04-11 2022-12-27 Darfon Electronics Corp. Keyswitch structure
US11264186B2 (en) 2019-04-11 2022-03-01 Darfon Electronics Corp. Keyswitch structure
CN110033977A (en) * 2019-05-03 2019-07-19 苏州达方电子有限公司 Press-key structure

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