JP3800994B2 - Electrical equipment - Google Patents

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JP3800994B2
JP3800994B2 JP2001180773A JP2001180773A JP3800994B2 JP 3800994 B2 JP3800994 B2 JP 3800994B2 JP 2001180773 A JP2001180773 A JP 2001180773A JP 2001180773 A JP2001180773 A JP 2001180773A JP 3800994 B2 JP3800994 B2 JP 3800994B2
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housing
face gear
motor
storage space
main body
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JP2002369979A (en
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和征 大内
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、ハウジングが小さく形成されて上記ハウジングに駆動部品等を内装するのにスペース的に制限の多い電気機器に関する発明である。
【0002】
【従来の技術】
従来から、手で把持して使用される電気機器、例えば、眉毛等を刈る毛刈り機やひげ剃り機や電動歯磨き機等のものは、携帯性や使用性等の向上を期して小型化が図られる傾向にある。この電気機器の小型化においては、小型化したハウジングに駆動部品をコンパクトに内装させることが優先的に考えられるものであり、そのため電気機器の製造性は多少なりとも犠牲になる場合がある。
【0003】
例えば、図11乃至図13に電気機器の例として眉毛等を刈る毛刈り機を示す。この毛刈り機は、縦方向に長い筒状のハウジングの先端に毛を刈るトリマー刃(図示せず)を突設し、上記ハウジングの中央部に上記トリマー刃を駆動させる駆動機構や上記駆動機構を駆動させるモータ2を内装し、上記ハウジングの基端部に駆動源となる電源電池(図示せず)を収納して構成されるものである。上記毛刈り機の構造のうち駆動機構やモータ2の内装構造は、毛刈り機の全体のハウジングを縦割りにしたような本体ハウジング11と上記本体ハウジング11の中央部分に対向して装着される駆動部カバー13との間に形成される内部収納スペース1に駆動機構やモータ2等を内装する構造である。詳述すると、上記内部収納スペース1のうち本体ハウジング11側にモータ2のオンオフを操作する操作ハンドル4を装着し、また、内部収納スペース1のうち駆動部カバー13側に駆動機構を構成する円盤状のフェースギア6を回転自在に配置すると共に上記フェースギア6にはフェースギア6の回転に従動して往復動をする駆動杆7を配設したものである。ここで、操作ハンドル4は、本体ハウジング11に設けた内部収納スペース1と外方とを連通するスイッチ装着孔3にスライド自在に装着されており、また、フェースギア6はその回転中心軸9を駆動部カバー13に設けた軸受け孔24に挿入して回転自在に配置してあり、また、駆動杆7はフェースギア6の偏心位置に本体ハウジング1方向に突設した偏心ピン17に一端を回転自在に連結されている。なお、この駆動杆7は先端をトリマー刃に連結させるものである。このようにすることで、モータ2や駆動機構の各部材を重ねるように配置でき、コンパクトにモータ2や駆動機構を内部収納スペース1に収納させているのである。
【0004】
【発明が解決しようとする課題】
ところで、この駆動機構やモータ2を内部収納スペース1に内装させる組付け作業においては、本体ハウジング11にモータ2を配置し、駆動部カバー13にフェースギア6等の駆動機構を配置し、その後、上記本体ハウジング11に上記駆動部カバー13を被着させるようにして行われるものである。ここで、本体ハウジング11と駆動部カバー13を被着させる際には、モータ2の出力軸2aに装着したピニオン5とフェースギア6とを噛み合わせながら行わなければならないものであり、また、上記ピニオン5及びフェースギア6は本体ハウジング11と駆動部カバー13との間に位置して見えにくいものであることから、ピニオン5とフェースギア6との噛み合わせ不良等が生じ易く組付け作業を困難なものとしていた。つまり、この毛刈り機のハウジングへの駆動機構やモータ2の内装構造は、上記モータ2や駆動機構のハウジングへのコンパクトな収納を優先させるあまり製造性が犠牲にされた構造になっているのである。
【0005】
本発明は上記の点に鑑みてなされたものであり、上記モータや駆動機構のハウジングへのコンパクトな収納を図ると同時にハウジングに駆動機構やモータ等を内装させる際の製造性も良好にした電気機器を提供することを課題とするものである。
【0006】
【課題を解決するための手段】
上記課題を解決するために本発明に係る電気機器は、ハウジングを構成する少なくとも1対の対向するハウジング構成部材の間にモータ2や駆動機構を収納する内部収納スペース1を有し、上記内部収納スペース1を構成した一のハウジング構成部材に上記内部収納スペース1と外方とを連通するスイッチ装着孔3を形成すると共に上記スイッチ装着孔3にモータ2のオンオフ操作をする操作ハンドル4をスライド自在に装着し、上記内部収納スペース1に収納した駆動機構の構成品としてモータ2の出力軸2aに装着したピニオン5に噛合して回転自在に配置させるフェースギア6と上記フェースギア6の回転に従動して一定作動をする駆動杆7とを備えて成る電気機器であって、スイッチ装着孔3を左右に分割するように上記一のハウジング構成部材から軸受け設置片23を突設し、操作ハンドル4の裏面に突設した左右1対の係止フック4aを上記スイッチ装着孔3に電気機器の長手方向にスライド自在に挿通し、軸受け設置片23に内部収納スペース1側に開口した軸受け孔8を形成すると共に上記軸受け孔8にフェースギア6の回転中心軸9を挿入してフェースギア6を回転自在に配置したことを特徴とするものである。
れにより、スイッチ装着孔3を左右に分割するように上記一のハウジング構成部材から軸受け設置片23を突設し、操作ハンドル4の裏面に突設した左右 1 対の係止フック4aを上記スイッチ装着孔3に電気機器の長手方向にスライド自在に挿通し、軸受け設置片23に内部収納スペース1側に開口した軸受け孔8を形成すると共に上記軸受け孔8にフェースギア6の回転中心軸9を挿入してフェースギア6を回転自在に配置したので、一のハウジング構成部材にスライド自在に装着させた操作ハンドル4を避けてフェースギア6を上記一のハウジング構成部材に配置させることができるものであり、ハウジングにモータ2や駆動機構を組み付ける際には、あらかじめフェースギア6等の駆動機構を配置すると共にモータ2を配置した一のハウジング構成部材に他のハウジング構成部材を被着するといった手順で組付け作業を行わせることができるものであり、つまり、他のハウジング構成部材を一のハウジング構成部材に被着させる前の段階で、一のハウジング構成部材にモータ2と駆動機構と連動できる状態にして配置させることができることから、内部収納スペース1にモータ2や駆動機構を組み付ける際にモータ2や駆動機構の組付け不良を発生させにくくすることができて製造性の向上を図ることができるものである。
【0007】
【発明の実施の形態】
以下、本発明を添付図面に示す実施形態に基づいて説明する。
【0008】
図1乃至図9に本発明の実施の形態の例を示す。本例では、ハウジングが小さく形成されて上記ハウジングに駆動部品等を内装するのにスペース的に制限の多い電気機器として、主に眉毛等の毛を刈る用途に使用される毛刈り機を例に挙げる。この毛刈り機は、図5,6に示すように、縦方向に長い筒状のハウジングを有し、上記ハウジングの先端には毛を刈るトリマー刃10を突設し、上記ハウジングの中央部には上記トリマー刃10を駆動させる駆動機構や上記駆動機構を駆動させるモータ2を内装し、上記ハウジングの基端部には駆動源となる電源電池(図示せず)を収納して構成されるものである。
【0009】
この毛刈り機のハウジングは、図5,6に示すように、毛刈り機の全体のハウジングを縦割りにしたような本体ハウジング11と、上記本体ハウジング11の先端部分に対向して被着させる刃カバー12と、上記本体ハウジング11の中央部分に対向して被着させる駆動部カバー13と、上記本体ハウジング11の基端部分の外周面を被覆するように被着させる有底円筒状の電池カバー25とから構成される。ここで、本体ハウジング11の先端部分と刃カバー12との間にはトリマー刃10が収納されるトリマー刃収納スペースが形成され、本体ハウジング11の中央部分と駆動部カバー13との間には上記駆動機構やモータ2を収納させる内部収納スペース1が形成される。この内部収納スペース1及びトリマー刃収納スペースは連続した中空空間である。なお、本体ハウジング11の基端部分には電源電池を収納させる電池収納部14が形成されており、上記本体ハウジング11の基端部分を被着する電池カバー25の取外しで電源電池が取替交換できるようになっている。
【0010】
上記トリマー刃10は、図7に示すように、それぞれ矩形板状で、その長手方向に櫛歯27を形成した可動刃16と固定刃15とで構成される。この固定刃15と可動刃16とはその板面を重ね合わせるようにして本体ハウジング11の先端部分と刃カバー12との間のスリットからそれぞれ櫛歯27形成部分を外方に突出させるようにして上記トリマー刃収納スペースに配置される。可動刃16は固定刃15の長手方向に往復摺動するものであり、この可動刃16の往復動は後述する駆動機構の駆動杆7により行われる。なお、図7中26は駆動杆7の先端を可動刃16に連結させる連結具であり、図7中28は固定刃15と可動刃16とを隙間無く重ね合わせるように可動刃16を付勢する板バネである。
【0011】
上記駆動機構は、図8に示すように、モータ2の出力軸2aに装着したピニオン5と噛合するフェースギア6と、上記フェースギア6の偏心位置に係合される縦方向に長く形成した板棒状の駆動杆7とで構成される。このフェースギア6は中心に回転軸9を貫通させた略円盤状のギアであって、円盤面の周縁に亘って歯部6aを形成させると共にその円盤面上の偏心位置に円形台状の偏心カム17を立設させて形成されたものである。つまり偏心カム17はその偏心位置で回転軸9が貫通する構造になっている。また、駆動杆7は先端部分を細幅に形成すると共に基端部分には横方向に長い長孔状の係合孔18を形成している。駆動杆7とフェースギア6との係合構造はフェースギア6の偏心カム17を駆動杆7の係合孔18に挿入配置した構造であって、これは、フェースギア6の回転運動を偏心カム17と係合孔18との係合を介して駆動杆7の縦方向の往復運動に変換させるような往復動リンク機構である。そして、この縦方向に往復運動をする駆動杆7の先端部分は、本体ハウジング11の先端部分に設けたガイド部19の縦方向のガイド溝19aに摺動自在に嵌合すると共に可動刃16に連結し、可動刃16に縦方向の往復動をさせるのである。
【0012】
上記駆動機構はモータ2と共に上記内部収納スペース1に内装されるものであるが、以下、この駆動機構及びモータ2のハウジングへの内装部分の構造につき詳述する。
【0013】
内部収納スペース1を形成する部分の本体ハウジング11においては、内部スペースと外方とを連通させるスイッチ装着孔3が形成されており、このスイッチ装着孔3にはモータ2のオンオフを操作する操作ハンドル4が本体ハウジング11の縦方向にスライド自在に装着される。詳述すると、図9に示すように、この操作ハンドル4はその裏面に左右1対の係止フック部4aを突設させており、この係止フック部4aをスイッチ装着孔3に移動自在に挿通させると共に、係止フック部4aの突出先端部分に設けた爪部4bを本体ハウジング11の内面に沿って配置した板状のスイッチ基台20に係合させている。つまり、操作ハンドル4は本体ハウジング11を挟持させるようにスイッチ基台20に係合して本体ハウジング11に装着されている。ここで上記スイッチ基台20には先端方向に二股状に突出した1対のクリック突起20aが形成されている。このクリック突起20aは1対のクリック突起20aの対向方向に弾性変形可能にした突起であり、スイッチ基台20を本体ハウジング11の内面に沿わせてスライド移動させると、上記クリック突起20aが本体ハウジング11の内面に突出したクリック係合部21にクリック係合されるようになっている。ここで、クリック係合とは一定の力がかかると係合が外れるような係合を言う。なお、駆動部カバー13には本体ハウジング11方向に1対の規制突条片22が突設してあり、本体ハウジング11に駆動部カバー13を被着させた際にはこの1対の規制突条片22がスイッチ基台20の側端面に沿うように配置されるものである。つまり、操作ハンドル4及びスイッチ基台20は上記規制突条片22のガイドを受けて本体ハウジング11の縦方向にのみスライド自在になって装着されるものである。本例では、上記クリック突起20aとクリック係合部21とのクリック係合をスイッチ基台20のスライド移動範囲の途中にて行わせており、すなわち、スイッチ基台20をスライド移動範囲の基端側または先端側にそれぞれ位置規制させるようにしている。そして、図示はしていないが、スイッチ基台20を縦方向基端側に位置させた際に、上記スイッチ基台20に備えた金属片がモータと電源電池とを電気的に接続させてモータ2に通電させると共にモータ2を駆動させるようになっているものである。
【0014】
ここで、本例では上記スイッチ装着孔3は図2に示すように、後述する軸受け孔8を設ける軸受け設置片23により略凹字状に形成されている。つまり、上記軸受け設置片23は、スイッチ装着孔3を矩形状孔と仮定するとスイッチ装着孔3の先端側の縁部における左右中央部からスイッチ装着孔3を覆うように基端方向に突設した突片状のものである。この軸受け設置片23には本体ハウジング11に対向する駆動部カバー13の方向に立設した円筒状の軸受け孔8が設けられている。また、駆動部カバー13における上記軸受け孔8に対応する位置には軸受け孔24が形成されている(図3)。この両軸受け孔8,24にはフェースギア6の回転中心軸9の端部がそれぞれ挿入されるものである。つまり、フェースギア6は、略円盤状ギアであるフェースギア6の円盤面を本体ハウジング11及び駆動部カバー13に対向させ、回転中心軸9の両端を両軸受け孔8,24に回転自在に軸支させて内部収納スペース1に回転自在に配置されている。本例ではこのフェースギア6は、歯部6aを形成させた円盤面を本体ハウジング11側に対向させるものであり、つまり、本体ハウジング11と上記フェースギア6の円盤部分との間に駆動杆7が位置するように配置されている。ここで、上記本体ハウジング11側の軸受け孔8と本体ハウジング11の内面に設置したスイッチ基台20との位置関係においては、上記スイッチ基台20の1対のクリック突起20aの間の位置に軸受け孔8が位置するようにしてあるものであって、つまり、上記軸受け孔8は、上記軸受け孔8に挿入される回転中心軸9がスイッチ基台20の本体ハウジング11の縦方向へのスライド移動を妨げない位置に配置されているのである。なお、フェースギア6にあっては、その円盤部分に対して回転中心軸9を回転自在に挿通させると共に、回転中心軸9を両軸受け孔8,24に対して固定的に軸支させるようにした構造であってもよいものである。また、モータ2は内部収納スペース1の縦方向の基端側、つまり本体ハウジング11を基準にするとスイッチ装着孔3と電池収納部14との間の位置に本体ハウジング11と駆動部カバー13とに挟持される形で、モータ2の出力軸2aを本体ハウジング11の先端方向に突出させて配置される。そして、上記出力軸2aに装着したピニオン5はフェースギア6の円盤部分と本体ハウジング11との間に位置させる形でフェースギア6の歯部6aに噛み合わせている。
【0015】
上述したように、駆動機構やモータ2の内部収納スペース1への内装構造においては、図4に示すように、操作ハンドル4に係合させたスイッチ基台20を本体ハウジング11に沿わせて配置すると共に、上記スイッチ基台20より内部収納スペース1の内方位置にフェースギア6を回転自在に配置し、上記フェースギア6とスイッチ基台20との間にモータ2の出力軸2aに装着したピニオン5とフェースギア6に連結した駆動杆7とを配置させた構造になっているものであって、すなわちモータ2や駆動機構の各部材を重ねるようにして内部収納スペース1に省スペースに各部材が配置されているのである。
【0016】
ところで、駆動機構やモータ2の内部収納スペース1への内装における実際の組付け作業においては、まず、操作ハンドル4及びスイッチ基台20を装着させた本体ハウジング11の所定位置にモータ2を配置し、次に、フェースギア6の回転中心軸9の一端を本体ハウジング11の軸受け孔8に挿入させてフェースギア6及び駆動杆7から成る駆動機構を本体ハウジング11に配置させ、そして、上記モータ2及び駆動機構を配置した本体ハウジング11に駆動部カバー13を対向させるように位置させ、最後に、駆動部カバー13の軸受け孔24にフェースギア6の回転中心軸9の他端を挿入させて本体ハウジング11に駆動部カバー13を被着させる、といった手順て行われるものである。このような手順による駆動機構やモータ2の内部収納スペース1への組付け作業においては、あらかじめモータ2や駆動機構を配置した本体ハウジング11に駆動部カバー13を被着させることができ、つまりは、本体ハウジング11にモータ2や駆動機構を配置させた段階で確実にピニオン5とフェースギア6とを噛み合わせて各部材を連動させ得る状態にできるものであるから、本体ハウジング11に駆動部カバー13を被着させる段階でピニオン5とフェースギア6とを噛み合わせるといった従来の組付け手順のものに比べて、ピニオン5とフェースギア6との噛み合わせ不良等の組付け不良を発生させにくくすることができるものである。従って、ハウジングにモータ2や駆動機構を組付ける際の製造性の向上が図られているのである。
【0017】
なお、本体ハウジング11に駆動部カバー13を被着させる際にはいくらかの衝撃がフェースギア6や駆動杆7に伝わってしまうものであり、従来の毛刈り機では上記衝撃によってフェースギア6と駆動杆7との連結が外れてしまうといった問題も生じていたが、本例の毛刈り機においてはこの問題も解決しているものである。つまり、本例では、従来の毛刈り機には設けられていない本体ハウジング11の軸受け孔8にフェースギア6の回転中心軸9を軸支させ、フェースギア6の回転中心軸9の一端及び他端を本体ハウジング11及び駆動部カバー13に設けた両軸受け孔8,24に軸支させている、つまり、フェースギア6の回転中心軸9を本体ハウジング11と駆動部カバー13との間に架設させているものであって、フェースギア6に衝撃が加わってもフェースギア6のぐらつきが防止されているものである。また、駆動杆7とフェースギア6との連結構造においては、上記本体ハウジング11及び駆動部カバー13に架設したフェースギア6の回転中心軸9が偏心カム17を介して駆動杆7に設けた係合孔18を貫通するような構造になっており、フェースギア6と駆動杆7との連結が外れることのない構造になっているのである。このように、本例の毛刈り機では従来の毛刈り機に比べて耐衝撃性をも向上させているものである。
【0018】
なお、図10には、本発明の実施の形態の他例を示しているが、これは、本体ハウジング11の軸受け孔8を設ける軸受け設置片23の形状を変化させた例である。つまり、スイッチ装着孔3を矩形状孔と仮定した場合に、先の実施の形態の例における軸受け設置片23をそのまま本体ハウジング11の基端方向に延ばして上記スイッチ装着孔3を左右に分割させたようにしたものである。このようにすることで、軸受け設置片23をスイッチ装着孔3に突出した突片状でなくスイッチ装着孔3に掛け渡した橋状の形状にさせるものであり、軸受け設置片23の強度を向上させ、ひいては駆動機構のハウジングへの安定配置を実現させるものである。
【0019】
なお、上述したように本実施の形態の例及び他例ではいずれも、ハウジングが小さく形成されて上記ハウジングに駆動部品等を内装するのにスペース的に制限の多い電気機器として毛刈り機を例に挙げて説明したが、本発明は、駆動機構やモータをハウジング内に省スペースに収納させながらも組立て性や耐衝撃性の向上を図り得るものであって、毛刈り機同様にハウジング内に省スペースに駆動機構やモータを収納させることが要求されるひげそり機や電動歯ブラシ機等にも応用が利くものであることはいうもまでもないことである。
【0020】
【発明の効果】
上記のように本発明の電気機器にあっては、叙述したように、一のハウジング構成部材に設けたスイッチ装着孔を左右に分割するように上記一のハウジング構成部材から軸受け設置片を突設し、操作ハンドルの裏面に突設した左右1対の係止フックを上記スイッチ装着孔に電気機器の長手方向にスライド自在に挿通し、軸受け設置片に内部収納スペース側に開口した軸受け孔を形成すると共に上記軸受け孔にフェースギアの回転中心軸を挿入してフェースギアを回転自在に配置したので、一のハウジング構成部材のスイッチ装着孔にスライド自在に装着させた操作ハンドルを避けてフェースギアを上記一のハウジング構成部材に軸支させて内部収納スペースにフェースギアひいては駆動機構を配置させることができるものであり、内部収納スペースにモータや駆動機構を組み付ける際には、あらかじめ一のハウジング構成部材にフェースギア等の駆動機構を配置すると共にモータを配置し、その後、上記一のハウジング構成部材に他のハウジング構成部材を被着する、といった手順で行わせることができるものであり、つまり、他のハウジング構成部材を一のハウジング構成部材に被着させる前の段階で、一のハウジング構成部材にモータと駆動機構とを連動できる状態にして配置させることができることから、ハウジングにモータや駆動機構を組み付ける際にモータや駆動機構の組付け不良を発生させにくくすることができ、製造性を向上させることができるものである。
【図面の簡単な説明】
【図1】本発明の実施の形態の例を示す毛刈り機であって、モータや駆動機構を配置した状態の本体ハウジングを示すものであり、(a)は内部収納スペースの方向からみた正面図であり、(b)は側面断面図である。
【図2】同上のモータや駆動機構を配置しない状態の本体ハウジングを示すものであり、内部収納スペースの方向からみた正面図である。
【図3】同上の駆動部カバーを示すものであり、(a)は内部収納スペースの方向からみた正面図であり、(b)は側面断面図である。
【図4】同上の本体ハウジングに駆動部カバーを被着した状態を示す側面断面図である。
【図5】図4の状態の毛刈り機にトリマー刃、刃カバー及び電池カバーを装着した毛刈り機を示す側面断面図である。
【図6】図4の状態の毛刈り機にトリマー刃及び刃カバーを装着した毛刈り機を示す正面図である。
【図7】同上のトリマー刃の本体ハウジングの先端部分への配置構造を示す分解斜視図である。
【図8】同上の駆動機構の要部を示す斜視図である。
【図9】図6のA−A線断面図である。
【図10】本発明の実施の形態の他例を示すものであって、本体ハウジングに回転中心軸のみを取り付けた状態を示すものであり、(a)は内部収納スペースの方向からみた正面図であり、(b)は側面断面図である。
【図11】従来技術の例であって、本体ハウジングにモータを配置した状態を示すものであり、(a)は内部収納スペースの方向からみた正面図であり、(b)は側面断面図である。
【図12】同上の従来技術の例であって、駆動機構を配置した状態を示すものであり、(a)は内部収納スペースの方向からみた正面図であり、(b)は側面断面図である。
【図13】同上の従来技術の例であって、本体ハウジングに駆動部カバーを被着した状態を示す側面断面図である。
【符号の説明】
1 内部収納スペース
2 モータ
2a 出力軸
3 スイッチ装着孔
4 操作ハンドル
5 ピニオン
6 フェースギア
7 駆動杆
8 軸受け孔
9 回転中心軸
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric device having a limited space in which a housing is formed small and a drive part or the like is housed in the housing.
[0002]
[Prior art]
Conventionally, electric devices that are used by being gripped by hand, for example, hairbrushing machines for shaving eyebrows, shaving machines, electric toothpaste machines, etc., have been downsized to improve portability and usability. It tends to be planned. In miniaturization of this electrical device, it is considered preferentially that the drive components are compactly housed in the miniaturized housing, so that the manufacturability of the electrical device may be sacrificed to some extent.
[0003]
For example, FIGS. 11 to 13 show a hair-cutting machine that cuts eyebrows and the like as an example of an electric device. This hair trimmer projects a trimmer blade (not shown) that cuts hair at the end of a cylindrical housing that is long in the vertical direction, and drives the trimmer blade at the center of the housing or the drive mechanism And a power supply battery (not shown) serving as a drive source is housed in the base end portion of the housing. Of the structure of the above-described hair cutter, the interior structure of the drive mechanism and the motor 2 is mounted so as to be opposed to the main body housing 11 in which the entire housing of the hair cutter is vertically divided and the central portion of the body housing 11. The internal storage space 1 formed between the drive unit cover 13 and the drive mechanism, the motor 2 and the like are built in. More specifically, the operation handle 4 for operating on / off of the motor 2 is mounted on the main body housing 11 side in the internal storage space 1, and the disk constituting the drive mechanism on the drive unit cover 13 side in the internal storage space 1. The face gear 6 is rotatably arranged, and the face gear 6 is provided with a driving rod 7 that reciprocates following the rotation of the face gear 6. Here, the operation handle 4 is slidably mounted in a switch mounting hole 3 that communicates the internal storage space 1 provided in the main body housing 11 with the outside, and the face gear 6 has its rotation center shaft 9 attached thereto. The drive rod 7 is rotatably inserted by being inserted into a bearing hole 24 provided in the drive unit cover 13, and one end of the drive rod 7 is rotated by an eccentric pin 17 protruding in the direction of the main body housing 1 at an eccentric position of the face gear 6. It is connected freely. The drive rod 7 has a tip connected to a trimmer blade. By doing so, the members of the motor 2 and the drive mechanism can be arranged so as to overlap each other, and the motor 2 and the drive mechanism are stored in the internal storage space 1 in a compact manner.
[0004]
[Problems to be solved by the invention]
By the way, in the assembling work for installing the drive mechanism and the motor 2 in the internal storage space 1, the motor 2 is arranged in the main body housing 11, the drive mechanism such as the face gear 6 is arranged in the drive unit cover 13, and then This is performed by attaching the drive unit cover 13 to the main body housing 11. Here, when the main body housing 11 and the drive unit cover 13 are attached, the pinion 5 attached to the output shaft 2a of the motor 2 and the face gear 6 must be engaged with each other. Since the pinion 5 and the face gear 6 are not easily seen between the main body housing 11 and the drive unit cover 13, the engagement between the pinion 5 and the face gear 6 is likely to occur and the assembly work is difficult. Was supposed to be. In other words, the drive mechanism to the housing of the trimmer and the interior structure of the motor 2 have a structure that sacrifices manufacturability so as to give priority to compact housing in the housing of the motor 2 and drive mechanism. is there.
[0005]
The present invention has been made in view of the above-described points, and is an electric device that achieves compact housing in the housing of the motor and the drive mechanism, and at the same time, improves the manufacturability when the drive mechanism and the motor are housed in the housing. It is an object to provide a device.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, an electrical device according to the present invention has an internal storage space 1 for storing a motor 2 and a drive mechanism between at least one pair of opposing housing constituent members constituting the housing, and the internal storage A switch mounting hole 3 that connects the internal storage space 1 and the outside is formed in one housing component that forms the space 1, and an operation handle 4 for turning the motor 2 on and off is slidable in the switch mounting hole 3. A face gear 6 that is mounted on a pinion 5 mounted on an output shaft 2a of a motor 2 as a component of a drive mechanism stored in the internal storage space 1 and rotatably disposed, and is driven by the rotation of the face gear 6 to an electric appliance comprising a drive rod 7 to a predetermined operation, switch housings of the one to divide the mounting hole 3 in the left-right A bearing installation piece 23 is projected from the mounting component member, and a pair of left and right locking hooks 4a projecting on the back surface of the operation handle 4 is inserted into the switch mounting hole 3 so as to be slidable in the longitudinal direction of the electrical device. A bearing hole 8 opened to the inner storage space 1 side is formed in the installation piece 23, and a rotation center shaft 9 of the face gear 6 is inserted into the bearing hole 8 so that the face gear 6 is rotatably arranged. Monodea Ru.
This Reniyo is, the switch mounting hole 3 projecting the bearing installation piece 23 from the one housing component to divide into right and left, protruding from the rear surface of the operating handle 4 a pair of left and right locking hook 4a is inserted into the switch mounting hole 3 so as to be slidable in the longitudinal direction of the electric device, and a bearing hole 8 opened to the inner storage space 1 side is formed in the bearing installation piece 23, and the face gear 6 is rotated in the bearing hole 8. Since the center shaft 9 is inserted and the face gear 6 is rotatably disposed, the face gear 6 is disposed on the one housing component member while avoiding the operation handle 4 slidably mounted on the one housing component member. When assembling the motor 2 and the drive mechanism to the housing, the drive mechanism such as the face gear 6 is arranged in advance and the first motor 2 is arranged. Assembling work can be performed in a procedure such as attaching another housing component member to the uzing component member, that is, in a stage before attaching another housing component member to one housing component member. Since the motor 2 and the drive mechanism can be arranged in a state where they can be linked with the motor 2 and the drive mechanism on one housing component member, a defective assembly of the motor 2 or the drive mechanism occurs when the motor 2 or the drive mechanism is assembled in the internal storage space 1. Therefore, the productivity can be improved.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0008]
1 to 9 show examples of embodiments of the present invention. In this example, a hair-cutting machine mainly used for cutting hair such as eyebrows is taken as an example as an electrical device that has a small housing and is limited in space for mounting drive parts and the like in the housing. I will give you. As shown in FIGS. 5 and 6, this hair trimmer has a cylindrical housing that is long in the vertical direction, and a trimmer blade 10 that cuts hairs protrudes from the front end of the housing, and is located at the center of the housing. Includes a drive mechanism for driving the trimmer blade 10 and a motor 2 for driving the drive mechanism, and a base battery of the housing houses a power source battery (not shown) as a drive source. It is.
[0009]
As shown in FIGS. 5 and 6, the shaving machine housing is attached so as to oppose the main body housing 11 in which the entire housing of the shaving machine is vertically divided and the front end portion of the main body housing 11. A bladed cover 12, a drive part cover 13 that is attached to face the central portion of the main body housing 11, and a bottomed cylindrical battery that is attached so as to cover the outer peripheral surface of the base end portion of the main body housing 11. And a cover 25. Here, a trimmer blade storage space for storing the trimmer blade 10 is formed between the front end portion of the main body housing 11 and the blade cover 12, and the above-described portion between the central portion of the main body housing 11 and the drive unit cover 13 is formed. An internal storage space 1 for storing the drive mechanism and the motor 2 is formed. The internal storage space 1 and the trimmer blade storage space are continuous hollow spaces. A battery housing portion 14 for housing a power supply battery is formed at the base end portion of the main body housing 11, and the power source battery is replaced and replaced by removing the battery cover 25 to which the base end portion of the main body housing 11 is attached. It can be done.
[0010]
As shown in FIG. 7, the trimmer blade 10 is composed of a movable blade 16 and a fixed blade 15 each having a rectangular plate shape and having comb teeth 27 formed in the longitudinal direction thereof. The fixed blade 15 and the movable blade 16 are arranged so that their plate surfaces are overlapped so that the comb-teeth 27 forming portion protrudes outward from the slit between the tip portion of the main body housing 11 and the blade cover 12. It arrange | positions in the said trimmer blade storage space. The movable blade 16 reciprocates in the longitudinal direction of the fixed blade 15, and the reciprocating motion of the movable blade 16 is performed by a drive rod 7 of a drive mechanism described later. In FIG. 7, reference numeral 26 denotes a connecting tool for connecting the tip of the driving rod 7 to the movable blade 16, and reference numeral 28 in FIG. 7 biases the movable blade 16 so that the fixed blade 15 and the movable blade 16 overlap each other without any gap. It is a leaf spring.
[0011]
As shown in FIG. 8, the drive mechanism includes a face gear 6 that meshes with a pinion 5 attached to the output shaft 2 a of the motor 2, and a plate that is formed long in the vertical direction to be engaged with an eccentric position of the face gear 6. It is composed of a rod-shaped drive rod 7. The face gear 6 is a substantially disc-shaped gear having a rotating shaft 9 penetrating at the center. The face gear 6 forms a tooth portion 6a over the periphery of the disc surface, and has a circular trapezoidal eccentricity at an eccentric position on the disc surface. The cam 17 is formed upright. That is, the eccentric cam 17 has a structure in which the rotating shaft 9 penetrates at the eccentric position. Further, the drive rod 7 has a narrow tip end portion and a long hole-like engagement hole 18 in the lateral direction at the base end portion. The engagement structure between the drive gear 7 and the face gear 6 is a structure in which the eccentric cam 17 of the face gear 6 is inserted and disposed in the engagement hole 18 of the drive gear 7. This is a reciprocating link mechanism that converts the drive rod 7 into a reciprocating motion in the vertical direction through the engagement of the engagement holes 17 and 18. The front end portion of the drive rod 7 that reciprocates in the vertical direction is slidably fitted in the vertical guide groove 19 a of the guide portion 19 provided at the front end portion of the main body housing 11, and the movable blade 16. They are connected to cause the movable blade 16 to reciprocate in the vertical direction.
[0012]
The drive mechanism is housed in the internal storage space 1 together with the motor 2. Hereinafter, the structure of the drive mechanism and the interior portion of the motor 2 in the housing will be described in detail.
[0013]
A switch mounting hole 3 that connects the internal space and the outside is formed in the body housing 11 that forms the internal storage space 1, and an operation handle for operating the motor 2 on and off is formed in the switch mounting hole 3. 4 is slidably mounted in the longitudinal direction of the main body housing 11. More specifically, as shown in FIG. 9, the operation handle 4 has a pair of left and right locking hooks 4 a protruding from the back surface thereof, and the locking hooks 4 a can be freely moved to the switch mounting hole 3. While being inserted, the claw portion 4 b provided at the protruding tip portion of the locking hook portion 4 a is engaged with a plate-like switch base 20 disposed along the inner surface of the main body housing 11. That is, the operation handle 4 is attached to the main body housing 11 by engaging with the switch base 20 so as to sandwich the main body housing 11. Here, the switch base 20 is formed with a pair of click protrusions 20a protruding in a bifurcated shape in the distal direction. The click protrusions 20a are protrusions that can be elastically deformed in a direction opposite to the pair of click protrusions 20a. When the switch base 20 is slid along the inner surface of the main body housing 11, the click protrusions 20a are moved to the main body housing. 11 is click-engaged with a click engagement portion 21 projecting from the inner surface of 11. Here, the click engagement means an engagement that is disengaged when a certain force is applied. The drive unit cover 13 is provided with a pair of regulating protrusions 22 in the direction of the body housing 11, and when the drive unit cover 13 is attached to the body housing 11, the pair of regulation projections 22. The strip 22 is arranged along the side end face of the switch base 20. That is, the operation handle 4 and the switch base 20 are mounted so as to be slidable only in the longitudinal direction of the main body housing 11 by receiving the guide of the regulating protrusion piece 22. In this example, the click engagement between the click protrusion 20a and the click engagement portion 21 is performed in the middle of the slide movement range of the switch base 20, that is, the switch base 20 is located at the base end of the slide movement range. The position is regulated to the side or the tip side. Although not shown, when the switch base 20 is positioned on the longitudinal base end side, the metal piece provided on the switch base 20 electrically connects the motor and the power battery to the motor. 2 is energized and the motor 2 is driven.
[0014]
Here, in this example, the switch mounting hole 3 is formed in a substantially concave shape by a bearing installation piece 23 provided with a bearing hole 8 to be described later, as shown in FIG. That is, if the switch mounting hole 3 is assumed to be a rectangular hole, the bearing installation piece 23 projects in the proximal direction so as to cover the switch mounting hole 3 from the left and right center portion at the edge on the distal end side of the switch mounting hole 3. It is a protruding piece. The bearing installation piece 23 is provided with a cylindrical bearing hole 8 erected in the direction of the drive unit cover 13 facing the main body housing 11. A bearing hole 24 is formed at a position corresponding to the bearing hole 8 in the drive unit cover 13 (FIG. 3). The ends of the rotation center shaft 9 of the face gear 6 are inserted into the bearing holes 8 and 24, respectively. That is, the face gear 6 is configured so that the disk surface of the face gear 6 that is a substantially disk-shaped gear faces the main body housing 11 and the drive unit cover 13, and both ends of the rotation center shaft 9 are rotatably supported by both the bearing holes 8 and 24. It is supported so as to be rotatable in the internal storage space 1. In this example, the face gear 6 has a disk surface on which the tooth portion 6 a is formed facing the main body housing 11, that is, a drive rod 7 between the main body housing 11 and the disk portion of the face gear 6. Is arranged to be located. Here, in the positional relationship between the bearing hole 8 on the main body housing 11 side and the switch base 20 installed on the inner surface of the main body housing 11, the bearing is located at a position between the pair of click protrusions 20 a of the switch base 20. The hole 8 is positioned, that is, the bearing hole 8 is such that the rotation center shaft 9 inserted into the bearing hole 8 slides in the longitudinal direction of the body housing 11 of the switch base 20. It is arranged in a position that does not hinder. In the face gear 6, the rotation center shaft 9 is rotatably inserted into the disk portion, and the rotation center shaft 9 is fixedly supported with respect to both the bearing holes 8 and 24. It may be the structure which was made. Further, the motor 2 is connected to the main body housing 11 and the drive unit cover 13 at a position between the switch mounting hole 3 and the battery storage unit 14 with respect to the longitudinal base end side of the internal storage space 1, that is, with respect to the main body housing 11. The output shaft 2 a of the motor 2 is disposed so as to protrude in the distal end direction of the main body housing 11 in a sandwiched manner. The pinion 5 attached to the output shaft 2a is meshed with the tooth portion 6a of the face gear 6 so as to be positioned between the disk portion of the face gear 6 and the main body housing 11.
[0015]
As described above, in the interior structure of the drive mechanism and the internal storage space 1 of the motor 2, as shown in FIG. 4, the switch base 20 engaged with the operation handle 4 is arranged along the main body housing 11. At the same time, the face gear 6 is rotatably arranged at the inner position of the internal storage space 1 from the switch base 20, and is mounted on the output shaft 2a of the motor 2 between the face gear 6 and the switch base 20. The pinion 5 and the drive rod 7 connected to the face gear 6 are arranged. That is, each member of the motor 2 and the drive mechanism is overlapped to save space in the internal storage space 1. The member is arranged.
[0016]
By the way, in the actual assembly work in the interior of the internal storage space 1 of the drive mechanism and the motor 2, first, the motor 2 is arranged at a predetermined position of the main body housing 11 on which the operation handle 4 and the switch base 20 are mounted. Next, one end of the rotation center shaft 9 of the face gear 6 is inserted into the bearing hole 8 of the main body housing 11, and the drive mechanism including the face gear 6 and the driving rod 7 is arranged in the main body housing 11, and the motor 2 The drive unit cover 13 is positioned so as to face the main body housing 11 on which the drive mechanism is disposed, and finally, the other end of the rotation center shaft 9 of the face gear 6 is inserted into the bearing hole 24 of the drive unit cover 13. This is performed by a procedure of attaching the drive unit cover 13 to the housing 11. In the assembling work of the drive mechanism and the motor 2 in the internal storage space 1 by such a procedure, the drive unit cover 13 can be attached to the main body housing 11 in which the motor 2 and the drive mechanism are arranged in advance. Since the pinion 5 and the face gear 6 can be engaged with each other at a stage where the motor 2 and the drive mechanism are arranged in the main body housing 11, each member can be interlocked. Compared to the conventional assembly procedure in which the pinion 5 and the face gear 6 are engaged with each other at the stage of attaching the pin 13, the assembly failure such as the engagement failure between the pinion 5 and the face gear 6 is less likely to occur. It is something that can be done. Therefore, the productivity is improved when the motor 2 and the drive mechanism are assembled to the housing.
[0017]
When the drive unit cover 13 is attached to the main body housing 11, some impact is transmitted to the face gear 6 and the drive rod 7. In the conventional hair-cutting machine, the face gear 6 and the drive are driven by the impact. There has also been a problem that the connection with the scissors 7 is disengaged, but this problem is also solved in the hair-cutting machine of this example. In other words, in this example, the rotation center shaft 9 of the face gear 6 is pivotally supported in the bearing hole 8 of the main body housing 11 that is not provided in the conventional hair-cutting machine, and one end of the rotation center shaft 9 of the face gear 6 and the like. The ends are pivotally supported in both bearing holes 8 and 24 provided in the main body housing 11 and the drive unit cover 13, that is, the rotation center shaft 9 of the face gear 6 is installed between the main body housing 11 and the drive unit cover 13. The wobbling of the face gear 6 is prevented even when an impact is applied to the face gear 6. Further, in the connection structure of the drive rod 7 and the face gear 6, the rotation center shaft 9 of the face gear 6 installed on the main body housing 11 and the drive portion cover 13 is provided on the drive rod 7 via the eccentric cam 17. The structure is such that the joint hole 18 is penetrated, and the connection between the face gear 6 and the drive rod 7 is not released. As described above, the hair-cutting machine of this example has improved impact resistance as compared with the conventional hair-cutting machine.
[0018]
Although FIG. 10 shows another example of the embodiment of the present invention, this is an example in which the shape of the bearing installation piece 23 provided with the bearing hole 8 of the main body housing 11 is changed. In other words, assuming that the switch mounting hole 3 is a rectangular hole, the bearing mounting piece 23 in the example of the previous embodiment is directly extended in the proximal direction of the main body housing 11 to divide the switch mounting hole 3 into left and right. It was something like that. By doing so, the bearing installation piece 23 is made into a bridge shape extending over the switch installation hole 3 instead of a protruding piece protruding into the switch installation hole 3, and the strength of the bearing installation piece 23 is improved. As a result, a stable arrangement of the drive mechanism on the housing is realized.
[0019]
As described above, in both the example of the present embodiment and the other examples, a hair-cutting machine is taken as an example of an electric device that has a limited space in which a housing is formed small and a drive part or the like is installed in the housing. As described above, the present invention can improve the assembling property and impact resistance while accommodating the drive mechanism and the motor in the housing in a space-saving manner. Needless to say, the present invention is also applicable to a shaving machine, an electric toothbrush machine, and the like that are required to store a drive mechanism and a motor in a space-saving manner.
[0020]
【The invention's effect】
As described above, in the electrical device of the present invention, as described above, the bearing installation piece protrudes from the one housing component so as to divide the switch mounting hole provided in the one housing component into the left and right. Then, a pair of left and right locking hooks projecting from the back of the operation handle is inserted into the switch mounting hole so as to be slidable in the longitudinal direction of the electrical device, and a bearing hole opened to the internal storage space side is formed in the bearing installation piece. At the same time, since the rotation center shaft of the face gear is inserted into the bearing hole and the face gear is rotatably arranged, the face gear is avoided by avoiding the operation handle slidably mounted in the switch mounting hole of one housing component. The face gear and thus the drive mechanism can be arranged in the internal storage space by being pivotally supported by the one housing constituent member. When assembling a motor or a drive mechanism to a housing, a drive mechanism such as a face gear is disposed in advance on one housing component and a motor is disposed, and then another housing component is mounted on the one housing component. In other words, a motor and a drive mechanism are attached to one housing component member before the other housing component member is attached to the one housing component member. Since it can be arranged in a state where it can be interlocked, it is possible to make it difficult to cause poor assembly of the motor and drive mechanism when assembling the motor and drive mechanism to the housing, and to improve manufacturability. .
[Brief description of the drawings]
FIG. 1 shows a shaving machine showing an example of an embodiment of the present invention, which shows a main body housing in which a motor and a drive mechanism are arranged, and (a) is a front view seen from the direction of an internal storage space. It is a figure, (b) is side surface sectional drawing.
FIG. 2 is a front view showing the main body housing in a state in which the motor and the driving mechanism are not arranged, as viewed from the direction of the internal storage space.
FIGS. 3A and 3B show a drive unit cover according to the first embodiment, wherein FIG. 3A is a front view seen from the direction of the internal storage space, and FIG. 3B is a side sectional view;
FIG. 4 is a side sectional view showing a state in which a drive unit cover is attached to the main body housing.
FIG. 5 is a side cross-sectional view showing a hair cutter in which a trimmer blade, a blade cover, and a battery cover are attached to the hair cutter in the state of FIG. 4;
6 is a front view showing a hair cutter in which a trimmer blade and a blade cover are attached to the hair cutter in the state shown in FIG. 4;
FIG. 7 is an exploded perspective view showing an arrangement structure of the trimmer blade on the front end portion of the main body housing.
FIG. 8 is a perspective view showing a main part of the same drive mechanism.
9 is a cross-sectional view taken along line AA in FIG.
FIG. 10 shows another example of the embodiment of the present invention, and shows a state where only the rotation center shaft is attached to the main body housing, and (a) is a front view seen from the direction of the internal storage space. (B) is a side sectional view.
FIG. 11 is an example of a prior art, and shows a state in which a motor is arranged in a main body housing, (a) is a front view seen from the direction of the internal storage space, and (b) is a side sectional view. is there.
FIG. 12 is an example of the prior art described above, and shows a state in which a drive mechanism is arranged, (a) is a front view seen from the direction of the internal storage space, and (b) is a side sectional view. is there.
FIG. 13 is a side sectional view showing a state in which a driving unit cover is attached to a main body housing, which is an example of the conventional technique same as the above.
[Explanation of symbols]
1 Internal storage space 2 Motor 2a Output shaft 3 Switch mounting hole 4 Operation handle 5 Pinion 6 Face gear 7 Driving rod 8 Bearing hole 9 Center of rotation

Claims (1)

ハウジングを構成する少なくとも1対の対向するハウジング構成部材の間にモータや駆動機構を収納する内部収納スペースを有し、上記内部収納スペースを構成した一のハウジング構成部材に上記内部収納スペースと外方とを連通するスイッチ装着孔を形成し、上記スイッチ装着孔にモータのオンオフ操作をする操作ハンドルをスライド自在に装着し、上記内部収納スペースに収納した駆動機構の構成品としてモータの出力軸に装着したピニオンに噛合して回転自在に配置したフェースギアと上記フェースギアの回転に従動して一定作動をする駆動杆とを備えて成る電気機器であって、スイッチ装着孔を左右に分割するように上記一のハウジング構成部材から軸受け設置片を突設し、操作ハンドルの裏面に突設した左右1対の係止フックを上記スイッチ装着孔に電気機器の長手方向にスライド自在に挿通し、軸受け設置片に内部収納スペース側に開口した軸受け孔を形成すると共に上記軸受け孔にフェースギアの回転中心軸を挿入してフェースギアを回転自在に配置したことを特徴とする電気機器。There is an internal storage space for storing a motor and a drive mechanism between at least one pair of opposing housing constituent members constituting the housing, and the internal storage space and the outer side are provided in one housing constituent member constituting the internal storage space. A switch mounting hole is formed, and an operation handle for turning the motor on and off is slidably mounted in the switch mounting hole, and mounted on the output shaft of the motor as a component of the drive mechanism stored in the internal storage space. It was an electrical device comprising a drive rod which pinion being driven by the rotation of the meshes rotatably disposed the face gear and the face gear to a predetermined operation, so as to divide the switch mounting hole on the left and right A bearing installation piece protrudes from the one housing component above, and a pair of left and right locking hooks projecting from the back of the operation handle Inserted slidably in the longitudinal direction of the electrical device to the switch mounting hole, the face gear by inserting the rotation axis of the face gear in the bearing hole so as to form a bearing hole which is open to the interior storage space side bearing installation piece An electric device characterized by being rotatably arranged.
JP2001180773A 2001-06-14 2001-06-14 Electrical equipment Expired - Fee Related JP3800994B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103101062A (en) * 2011-10-14 2013-05-15 松下电器产业株式会社 Hair remover

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5828114B2 (en) 2011-09-30 2015-12-02 パナソニックIpマネジメント株式会社 Hair removal equipment
JP2013075068A (en) 2011-09-30 2013-04-25 Panasonic Corp Hair remover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103101062A (en) * 2011-10-14 2013-05-15 松下电器产业株式会社 Hair remover

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