【書類名】 明細書
【発明の名称】 電気掃除機用吸込具並びに電気掃除機
【特許請求の範囲】
【請求項１】 下面に吸込口を開口させた吸込具本体と、前記吸込口に臨んで回転自在に設けられた回転ブラシと、前記回転ブラシを回転駆動する電動機とを備え、前記吸込具本体の後部には、前記吸込口に連通する吸込通路を有する連結管を配設しているものであって、前記吸込具本体には前記連結管を挟んで第一の収納室と第二の収納室が配設されていて、前記連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成し、この収容空間を介して第一および第二の収納室内の部品を導電線で電気的接続する構成としたことを特徴とする電気掃除機用吸込具。
【請求項２】 下面に吸込口を開口させた吸込具本体と、前記吸込口に臨んで回転自在に設けられた回転ブラシと、前記回転ブラシ内に配し、それを回転駆動する電動機を備え、前記吸込具本体の後部には、前記吸込口に連通する吸込通路を有する連結管を配設しているものであって、前記吸込具本体には前記連結管を挟んで第一の収納室と第二の収納室が配設されていて、前記連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成し、この収容空間を介して第一および第二の収納室内の部品を導電線で電気的接続する構成としたことを特徴とする電気掃除機用吸込具。
【請求項３】 連結管を吸込具本体に対し上下方向に回動可能に配設した請求項１または２記載の電気掃除機用吸込具。
【請求項４】 連結管の後部に周方向に回動自在な回動管を連結し、前記回動管の吸込通路を形成する壁体の外側をカバー体で覆って導電線の収容空間を形成した請求項３記載の電気掃除機用吸込具。
【請求項５】 収容空間内に導電線のたるみ部を設けた請求項１〜４のいずれか１項に記載の電気掃除機用吸込具。
【請求項６】 第一の収納室および第二の収納室の少なくともどちらか一方に導電線のたるみ部を設けた請求項１〜５のいずれか１項記載の電気掃除機用吸込具。
【請求項７】 収容空間内に導電線を保持する保持部を設けた請求項１〜６のいずれか１項に記載の電気掃除機用吸込具。
【請求項８】 連結管の吸込通路を形成する壁体であって回動管との連結部より前方の位置に導電線を保持する保持部を形成した請求項４記載の電気掃除機用吸込具。
【請求項９】 連結管もしくは回動管の接続部には電気接続部を設け、この電気接続部と導電線とを電気接続した請求項１〜８のいずれか１項記載の電気掃除機用吸込具。
【請求項１０】 内部に塵埃を集塵する集塵室と電動送風機を備えた電気掃除機本体に、請求項１〜９のいずれか１項に記載の電気掃除機用吸込具と連通するように接続される接続口を備えた電気掃除機。
【請求項１１】 内部に塵埃を集塵する集塵室と電動送風機を有する電気掃除機本体と、この電気掃除機本体の接続口に一端が接続され、他端に延長管を接続するホースと、延長管の反ホース側端面部に接続部を接続する請求項９記載の電気掃除機用吸込具を備え、前記ホースおよび延長管には前記掃除機本体側と電気接続する導電線を設けるとともに、延長管の吸込具の接続部には前記吸込具の電気接続部と電気接続する電気接続部を設け、この延長管の電気接続部に延長管の導電線を電気接続した電気掃除機。
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】
本発明は、吸込具本体内の連結管を挟んで位置する電子部品収納室および作動室を有する電気掃除機用吸込具並びにこの電気掃除機用吸込具を用いた電気掃除機に関するものである。
【０００２】
【従来の技術】
従来、この種の電気掃除機用吸込具は、図６ないし図７に示すように構成していた。以下、その構成について説明する。
【０００３】
図に示すように、吸込具本体１に電動機２により駆動される回転ブラシ３を内蔵した電気掃除機用吸込具が知られている。そして、この種の電気掃除機用吸込具では、下ケース４および上ケース５からなる吸込具本体１内に、仕切壁６ａ、６ｂ、７、８により、下方に開口し回転ブラシ３を内蔵した吸込室９と、これに連通する吸込通路１０と、電動機２を内蔵した作動室１１と、プリント回路基板１２を内蔵した電子部品収納室１３とを区画形成している。また、吸込具本体１の後部に、吸込通路１０の入口部に位置させて連結管１４を上下回動自在に支持するとともに、吸込通路１０は連結管１４内と連通している。
【０００４】
また、吸込室９と吸込通路１０との連通部には、下ケース４側で吸込通路１０の両側の仕切壁７，８から上方へ立ち上がって吸込通路１０を横断する架橋部１５を設け、この架橋部１５の上方に形成され上方へ開口するとともに左右方向へ抜ける凹溝１６に、電子部品収納室１３から作動室１１へのリード線１７を這わせた構造になっている。また、組立後には、凹溝１６の開口部が上ケース５に形成された閉塞部１８により閉塞される構造になっている。
【０００５】
【発明が解決しょうとする課題】
このような従来の構成では、吸込室９と吸込通路１０との連通部において図７に矢印で示すようにやや上向きに吸込風が流れることにより、連通部の上側に大きく突出した架橋部１５が、ちょうど最も強い風の流れの先に位置することになるため、風路抵抗を増大させるとともに、乱流による騒音や風切音などの騒音が大きくなるという問題がある。
【０００６】
本発明は上記従来の課題を解決するもので、吸込室と吸込通路との連通部に突出した架橋部を構成することなく、連結管内の吸込通路を形成する壁体の外側空間を有効利用して、電子部品収納室から作動室への導電線の組み付けを行い、乱流や風切音などの騒音を低減し、静音化することを目的としている。
【０００７】
【課題を解決するための手段】
本発明は上記目的を達成するために、下面に吸込口を開口させた吸込具本体と、前記吸込口に臨んで回転自在に設けられた回転ブラシと、前記回転ブラシを回転駆動する電動機とを備え、前記吸込具本体の後部には、前記吸込口に連通する吸込通路を有する連結管を配設しているものであって、前記吸込具本体には前記連結管を挟んで第一の収納室と第二の収納室が配設されていて、前記連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成し、この収容空間を介して第一および第二の収納室内の部品を導電線で電気的接続するように構成した電気掃除機用吸込具である。
【０００８】
これにより、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容室間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【０００９】
【発明の実施の形態】
本発明の請求項１に記載の発明は、下面に吸込口を開口させた吸込具本体と、前記吸込口に臨んで回転自在に設けられた回転ブラシと、前記回転ブラシを回転駆動する電動機とを備え、前記吸込具本体の後部には、前記吸込口に連通する吸込通路を有する連結管を配設しているものであって、前記吸込具本体には前記連結体を挟んで第一の収納室と第二の収納室が配設されていて、前記連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成し、この収容空間を介して第一および第二の収納室内の部品を導電線で電気的接続する構成としたことを特徴とする電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１０】
請求項２記載の発明は、下面に吸込口を開口させた吸込具本体と、前記吸込口に臨んで回転自在に設けられた回転ブラシと、前記回転ブラシ内に配し、それを回転駆動する電動機を備え、前記吸込具本体の後部には、前記吸込口に連通する吸込通路を有する連結管を配設しているものであって、前記吸込具本体には前記連結管を挟んで第一の収納室と第二の収納室が配設されていて、前記連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成し、この収容空間を介して第一および第二の収納室内の部品を導電線で電気的接続する構成としたことを特徴とする電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。また、回転ブラシ内に電動機を内蔵することにより、電動機を吸込具本体の回転ブラシ以外の位置に配設する必要がなく、吸込具本体の小型が実現できる。回転ブラシ内に電動機を内蔵させるものでは、電動機の外径により回転ブラシの外径が決定されるので、電動機を小型化すれば回転ブラシの外径も小さくできる。一方、回転ブラシを十分なトルクで駆動しようとすると、電動機の外径を小さくするのには限界があり、トルクをかせぎだすために電動機の回転を減速装置で減速するようにしてもやはり電動機の外径を小さくするのに限界があり、したがって、回転ブラシの外径が通常の回転ブラシ（回転ブラシ内に電動機を内蔵していない）より大きくなり、そのため、吸込具本体の大きさを抑える上では、回転ブラシを収容する吸込室と吸込通路との連通部を絞り込む必要がある。このような絞り込みを連通部に設けるものでは、連通部に突出した架橋部を設けると乱流がより発生し、騒音を発生するものであるが、連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成することで、上記の問題も解消できる。
【００１１】
請求項３に記載の発明は、上記請求項１または２に記載の発明において、連結管を吸込具本体に対し上下方向に回動可能に配設したもの、すなわち、連結管を吸込具本体に回動自在に取り付ける構成であっても、導線で第一および第二の収納室内の部品を電気的接続できる。
【００１２】
請求項４に記載の発明は、上記請求項３に記載の発明において、連結管の後部に周方向に回動自在な回動管を連結し、前記回動管の吸込通路を形成する壁体の外側をカバー体で覆って導電線の収容空間を形成した電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１３】
請求項５に記載の発明は、上記請求項１〜４のいずれか１項に記載の発明において、収容空間内に導電線のたるみ部を設けた電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１４】
請求項６に記載の発明は、上記請求項１〜５のいずれか１項に記載の発明において、第一の収納室および第二の収納室の少なくともどちらか一方に導電線のたるみ部を設けた電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１５】
請求項７に記載の発明は、上記請求項１〜６のいずれか１項に記載の発明において、収容空間内に導電線を保持する保持部を設けた電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１６】
請求項８に記載の発明は、上記請求項４に記載の発明において、連結管の吸込通路を形成する壁体であって回動管との連結部より前方の位置に導電線を保持する保持部を形成した電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１７】
請求項９に記載の発明は、上記請求項１〜８のいずれか１項に記載の発明において、連結管もしくは回動管に設けた接続部には電気接続部を設け、この電気接続部と導電線とを電気接続した電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００１８】
請求項１０に記載の発明は、内部に塵埃を集塵する集塵室と電動送風機を備えた電気掃除機本体に、請求項１〜９のいずれか１項に記載の電気掃除機用吸込具と連通するように接続される接続口を備えた電気掃除機であり、吸込風により発生する乱流による騒音や風切音などの騒音を低減して、電気掃除機の騒音を低減することができ、静音化することができる。
【００１９】
請求項１１に記載の発明は、内部に塵埃を集塵する集塵室と電動送風機を有する電気掃除機本体と、この電気掃除機本体の接続口に一端が接続され、他端に延長管を接続するホースと、延長管の反ホース側端面部に接続部を接続する請求項９記載の電気掃除機用吸込具を備え、前記ホースおよび延長管には前記掃除機本体側と電気接続する導電線を設けるとともに、延長管の吸込具の接続部には前記吸込具の電気接続部と電気接続する電気接続部を設け、この延長管の電気接続部に延長管の導電線を電気接続した電気掃除機であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【００２０】
【実施例】
以下、本発明の一実施例について、図面を参照しながら説明する。
【００２１】
図５に示すように、吸込具本体１９は絨毯などの被掃除面に付着した塵埃を遊離させる回転ブラシ２０（図３参照）を内蔵し、後部に延長管２１と接続される連結管２２を上下方向に回動自在に設けている。掃除機本体２３は、内部に塵埃を集塵する集塵室２４と電動送風機２５を備えており、この掃除機本体２３に設けた接続口２６に、延長管２１に接続したホース２７を接続し、吸込具本体１９の連結管２２を接続口２６に連通するように構成している。
【００２２】
図１〜４に示すように、吸込具本体１９の構成は上面を開口した下ケース２８と、この下ケース２８の上側に結合され下面を開口した上ケース２９とからなっている。そして吸込具本体１９内には、下ケース２８および上ケース２９にそれぞれ形成された仕切壁３０〜３３により、回転ブラシ２０を収容する吸込室３４とそれにつながる連通部３５と、作動室３６および電子部品収納室３７とが各々区画形成されている。また、吸込室３４は、吸込具本体１９の前部に位置していて横長に配設され下面部には吸込口３８を形成している。さらに、連通部３５は、吸込具本体１９の後部でその左右方向ほぼ中央部に位置して設けられている。また、電子部品収納室３７は、連通部３５の左右方向の一側方に隣接して位置しており、作動室３６は、電子部品収納室３７とは反対側に位置して連通部３５に隣接している。つまり、連通部３５に連通する連結管２２を挟んで電子部品収納室３７と作動室３６とが配設されている。
【００２３】
一方、連結管２２は、連通部３５内に前部が位置する状態で下ケース２８および上ケース２９により上下方向へ所定範囲回動自在に挟持されている。すなわち、連結管２２の前部の左右両側面に突出形成された支軸３９が、連通部３５の左右両側の側壁である仕切壁３０，３３に枢着されていて、連結管２２の内部は連通部３５より連続して吸込通路４０が後方へ形成されている。また、４１は屈曲した回動管で、前部が連結管２２の後部に円周方向へ回動自在に嵌合接続されている。また、回動管４１には管カバー４２が外周面の上側に取り付けられている。
【００２４】
また、回転ブラシ２０は、吸込具本体１９の下面に設けた吸込口３８に臨むように回転自在に配されており、また、その外形を構成する略筒状のブラシホルダー４３の外周面には塵埃掻き上げ部を構成する複数のブラシ４４を設けている。なお、塵埃掻き上げ部は、ブラシ４４の他に、薄板状のブレード、拭き効果のある帯状体（例えば、布製の帯状体）などであってもよい。
【００２５】
このブラシホルダー４３の内部に、図２に示すように、回転ブラシ２０を回転駆動する電動機４５、電動機４５の回転数を減速する減速装置４６、減速装置４６の出力をブラシホルダー４３に伝達するギヤー４７ａなどを内蔵している。減速装置４６と一体に連結して構成した電動機４５は中空軸を有する支持部４８に固定している。この支持部４８の中空軸は、内径を１３ｍｍとして冷却風をスムーズに導入できるように構成している。この支持部４８の中空軸は軸受部４９の内輪で支持し、軸受け部４９の外輪はブラシホルダー４３の端部に固定したキャップＡ５０により支持している。
【００２６】
ギヤー４７ａは、ブラシホルダー４３の軸方向における略中央部の内面部に形成したギヤー部４７ｂと噛み合って連結させている。ギヤー部４７ｂの外側に冷却風の通路孔５２を設けており、この通路孔５２は、中空軸から電動機４５および減速装置４６の外側を通る冷却風通路５３に連通するとともに、ブラシホルダー４３の外周面に設けた通気孔５４に連通している。ブラシホルダー４３の他方の端部は、軸５５を一体形成したキャップＢ５６が固定され軸受部材５７により吸込具本体１９へ回転自在に支持されている。
【００２７】
さらに、電子部品収納室３７内には、プリント回路基板５８が配設されている。プリント回路基板５８には、電動機４５に過電流が流れることを防ぐ正特性サーミスタなどで構成した過電流防止装置が設けられている。
【００２８】
一方、作動室３６には、図４に示すように、吸込具本体１９を空中に持ち上げた時には、回転ブラシ２０を回転駆動する電動機４５への電源を遮断して回転ブラシ２０の回転を停止させる安全装置が構成されている。すなわち、被掃除面を検知する検知レバー５９が支持軸５９ａを支点として回転自在に設けられ、検知レバー５９のローラー５９ｂが被掃除面側に接触するとバネ６０の付勢力に逆らって矢印Ａ方向に回動する。すると、検知レバー５９の支持軸５９ａと一体に形成された移動体受部６１が矢印Ｂ方向に回動し、この移動体受部６１に保持された球状の移動体６２もその方向に移動しスイッチ６３をオンさせる。吸込具本体１９を持ち上げるとローラー５９ｂが被掃除面から離れ、矢印Ｂ方向にバネ６０の付勢力で回動し、スイッチ６３はオフする。このスイッチ６３のオン・オフにより電動機４５のオン・オフを行っている。
【００２９】
つぎに、電気配線構造について説明する。図１〜３に示すように、回動管４１の先端部つまり延長管２１の反ホース２７側端部と接続する接続部には、端子ピン６４が突設されていて、掃除機本体２３からの電源と接続される。具体的には延長管２１およびホース２７内に導電線を設けておき、掃除機本体２３からの電源を供給するようにしている。端子ピン６４は延長管２１の端部に設けた電気接続部に電気接続され、延長管の導電線と電気接続される。この端子ピン６４に電気接続される端子ピン６４は吸込具の電気接続部であり、端子ピン６４のような突出形状でなくてもよく、延長管の電気接続部が端子ピンであればそれを挿入して接触する接触片であってもよく、要は延長管２１と吸込具本体１９との接続時に電気的接続可能な構成であればよい。
【００３０】
リード線Ａ６５は、管カバー４２と連結管２２内部の吸込通路４０を形成する壁体との間に構成される収容空間に配され、詳しくは吸込通路４０の壁体の外側上面に添わせて連結管２２の支軸３９近くの開口より導出し、仕切壁３０を貫通して電子部品収納室３７内に導入される。そして、リード線Ａ６５の他端はプリント回路基板５８に接続される。一方のリード線Ｂ６６は、リード線Ａ６５と同じく連結管２２の吸込通路４０の壁体と管カバー４２とで形成される収容室を通り連結管２２内部に導かれて、連結管２２内の吸込通路４０を連結管２２の他方の支軸３９近くの開口より導出し仕切壁３３を貫通して作動室３６内に導入され他端はスイッチ６３に接続される。
【００３１】
また、電子部品収納室３７内のプリント回路基板５８からリード線Ｃ６７が仕切壁３０を貫通して連結管２２の支軸３９近くの開口より吸込通路４０の壁体と管カバー４２より前方に設けた保護カバー６８とにより形成される収容空間に導入され連結管２２の他方の開口より仕切壁３３を貫通して作動室３６内に導入され他端はスイッチ６３に接続されている。
【００３２】
連結管２２内の吸込通路４０を形成する壁体の外方には保護カバー６８が形成されていて、リード線Ａ６５、リード線Ｂ６６、リード線Ｃ６７は吸込具本体１９の外方からの衝撃、傷つけなどから保護している。また、連結管２２内の吸込通路４０を形成する壁体と保護カバー６８の間には、保持部の一種である規制リブ６９が設けられており、配線されたリード線Ｂ６６、あるいはリード線Ｃ６７が回動管４１の端部が当接して傷つきが発生するのを防止するために保持固定している。さらに、リード線Ｂ６６、あるいはリード線Ｃ６７には、連結管２２が上下方向に回動した際また回動管４１が回動した際に、引張力、切断力などの応力が加わる事がないように、連結管２２の上下方向の回動寸法より大なるように設定した、たるみ部を吸込通路４０の壁体と保護カバー６８および管カバー４２で形成される収容空間に設ける、あるいは、電子部品収納室３７あるいは作動室３６の少なくともどちらか一方に設けている。
【００３３】
電動機４５への配線は、電子部品収納室３７内のプリント回路基板５８からリード線Ｄ７０が仕切壁３０内を通って、回転ブラシ２０の端部に構成された中空軸４８の内部に導かれて、電動機４５に設けた制御基板７１に接続されている。なお、制御基板７１には商用電源を整流する整流器、雑音防止器などが実装されている。
【００３４】
上記構成において動作、作用を説明する。
【００３５】
最初に、組立方法の概略を説明する。まず、下ケ−ス２８内の所定の各位置に、下ケ−ス２８の上面開口を介して、連通管２２、回転ブラシ２０、プリント回路基板５８、検知レバー５９、移動体受部６１、移動体６２、スイッチ６３などの各部品を上方から組み付ける。これとともに、同様に下ケース２８の下面開口を介して、リード線Ａ６５、リード線Ｂ６６、リード線Ｃ６７、リード線Ｄ７０の配線を行う。
【００３６】
その際、特に電子部品収納室３７内のプリント回路基板５８と作動室３６内のスイッチ６３とを接続するリード線Ｃ６７は、仕切壁３０を貫通して連結管２２の吸込通路４０を形成する壁体の外部上面に沿わせて連結管２２の他方の支軸３９近くの開口より仕切壁３３を貫通し、リード線Ｃ６７は、連結管２２の吸込通路４０を形成する壁体と保護壁６８の間に設けた規制リブ６９により、保持される。
【００３７】
次に、スイッチ６３に接続されているリード線Ｂ６６について述べる。リード線Ｂ６６の端部には端子ピン６４が設けられ、端子ピン６４は回動管４１の先端部に突設されるように設けられており、掃除機本体２３からの電源と接続される。それからリード線Ｂ６６は、連結管２２の吸込通路４０を形成する壁体の外側上面に沿わせて連結管２２の支軸３９近くの開口より仕切壁３３を貫通して作動室３６内に導入され、他端はスイッチ６３に接続され、配線される。一方のリード線Ａ６５は、リード線Ｂ６６と同じく連結管２２内部に導かれて、連結管２２の吸込通路４０を形成する壁体の外側上面に沿わせて連結管２２の他方の支軸３９近くの開口より仕切壁３０を貫通して電子部品収納室３７内に導入される。そして、リード線Ａ６５の他端はプリント回路基板５８に接続される。この状態で、リード線Ａ６５、リード線Ｂ６６が通っている回動管４１の面が管カバー４２により覆われる。次に下ケース２８の上に上ケース２９を結合してネジなどにより固定する。
【００３８】
このように、各リード線を配設する際に、連結管２２および回動管４１、管カバー４２の内部で配線の処理がされるために吸込室３４と吸込通路４０との連通部３５に突出した架橋部を無くすことができ、連通部３５を上ケース２９および下ケース２８の内壁面によって構成することが出来るため、吸込通路４０を滑らかに接続することが出来るので、掃除機本体２３により発生した吸引風は、架橋部などの凸部が無くなった連通部３５を通過することで吸込室３４から吸込通路４０を整流されて通過するために、乱流の発生を低減して風切り音が減少して騒音を下げるために低騒音化をすることができる。
【００３９】
また、連結管２２は上ケース２９および下ケース２８により上下方向へ所定範囲の回動自在になっており、また回動管４１も連結管２２の周方向に所定範囲で回動自在になっておりリード線Ａ６５、リード線Ｂ６６、およびリード線Ｃ６７に設けた、たるみ部により各リード線に回動時に働く引張力、切断力が加わることがないようになっている。なお、回動管４１を設けないものの場合には、リード線Ａ６５、リード線Ｂ６６に設けた、たるみ部のたるみ量を少なくできる。
【００４０】
なお、本実施例では第一の収納室を電子部品収納室３７とし、第二の収納室を作動室３６とした例を示したが、例えば第二の収納室に従来のように電動機を設けて回転ブラシをベルト駆動する様にしたものであってもよく、要は第一の収容室と第二の収容室に導電線を介して電気接続を行う必要性のある部品を各々配したものであれば適用できる。連結管２２を挟んで第一および第二の収納室を設けているのは、吸込具本体に部品を収納する場合に左右のバランス等を考慮する必要性があるためであり、例えば吸込具本体を持ち上げた場合等に左右のいずれかに吸込具本体が傾き、掃除作業性を低下させないようにするためのものである。
【００４１】
【発明の効果】
本発明の電気掃除機用吸込具によれば、下面に吸込口を開口させた吸込口本体と、前記吸込具本体に臨んで回転自在に設けた回転ブラシと、前記回転ブラシを回転駆動する電動機とを備え、前記吸込具本体の後部には、前記吸込口に連通する吸込通路を有する連結管が、前記吸込具本体に対して上下方向に回動可能に配設されているものであって、前記吸込具本体には前記連結体を挟んで第一の収納室と第二の収納室が配設されていて、前記連結管の吸込通路を形成する壁体の外側をカバー体で覆って収容空間を形成し、この収容空間を介して第一および第二の収納室内の部品を導電線で電気的接続する構成としたことを特徴とする電気掃除機用吸込具であり、吸込室と吸込通路との連通部に突出した架橋部を設けずとも、収容空間を介して連結管の両側の各収納室を電気的に接続することができ、乱流による騒音や風切音などの騒音を低減し、静音化することができる。
【図面の簡単な説明】
【図１】
本発明の実施例を示す電気掃除機用吸込具の要部分解斜視図
【図２】
同電気掃除機用吸込具の上ケースを外した平面図
【図３】
同電気掃除機用吸込具の一部破断側面図
【図４】
同電気掃除機用吸込具の作動室の断面図
【図５】
同電気掃除機の全体斜視図
【図６】
従来の電気掃除機用吸込具の要部斜視図
【図７】
同電気掃除機用吸込具の中央縦断面図
【符号の説明】
１９ 吸込具本体
２０ 回転ブラシ
２２ 連結管
３６ 作動室（第二の収納室）
３７ 電子部品収納室（第一の収納室）
４１ 回動管
４２ 管カバー（カバー体）
４５ 電動機
６４ 端子ピン（電気接続部）
６５ リード線Ａ（導電線）
６６ リード線Ｂ（導電線）
６７ リード線Ｃ（導電線）
６８ 保護カバー（カバー体）
６９ 規制リブ（保持部）
[Document name] Specification [Title of invention] Vacuum cleaner suction device and vacuum cleaner [Claims]
1. A suction tool main body having a suction port opened on the lower surface thereof, a rotary brush rotatably provided facing the suction port, and an electric motor for rotationally driving the rotary brush. At the rear portion, a connecting pipe having a suction passage communicating with the suction port is arranged, and the suction tool main body sandwiches the connecting pipe with the first storage chamber and the second storage. A chamber is arranged, and the outside of the wall body forming the suction passage of the connecting pipe is covered with a cover body to form a storage space, and the parts of the first and second storage chambers are connected through the storage space. A suction tool for vacuum cleaners that is characterized by being electrically connected with a conductive wire.
2. A suction tool main body having a suction port opened on the lower surface, a rotary brush rotatably provided facing the suction port, and an electric motor arranged in the rotary brush and rotationally driving the rotary brush. In the rear part of the suction tool main body, a connecting pipe having a suction passage communicating with the suction port is arranged, and the suction tool main body has a first storage chamber sandwiching the connecting pipe. And a second storage chamber are arranged, and the outside of the wall body forming the suction passage of the connecting pipe is covered with a cover body to form a storage space, and the first and second storage spaces are formed through the storage space. A suction tool for vacuum cleaners that features a configuration in which parts in the storage room are electrically connected by conductive wires.
3. The suction tool for an electric vacuum cleaner according to claim 1 or 2, wherein a connecting pipe is arranged so as to be rotatable in the vertical direction with respect to the suction tool main body.
4. A rotating tube that is rotatable in the circumferential direction is connected to the rear portion of the connecting tube, and the outside of a wall body that forms a suction passage of the rotating tube is covered with a cover body to provide a space for accommodating conductive wires. The suction tool for an electric vacuum cleaner according to claim 3, which is formed.
5. The suction tool for a vacuum cleaner according to any one of claims 1 to 4, wherein a slack portion of a conductive wire is provided in the accommodation space.
6. The suction tool for a vacuum cleaner according to any one of claims 1 to 5, wherein a slack portion of a conductive wire is provided in at least one of a first storage chamber and a second storage chamber.
7. The suction tool for a vacuum cleaner according to any one of claims 1 to 6, wherein a holding portion for holding a conductive wire is provided in the accommodation space.
8. The suction for a vacuum cleaner according to claim 4, wherein a holding portion is formed at a position in front of the connecting portion with the rotating pipe, which is a wall body forming a suction passage of the connecting pipe. Ingredients.
9. The vacuum cleaner according to claim 1, wherein an electric connection portion is provided at the connection portion of the connecting pipe or the rotating pipe, and the electrical connection portion and the conductive wire are electrically connected to each other. Suction tool.
10. The main body of an electric vacuum cleaner provided with a dust collecting chamber for collecting dust and an electric blower is communicated with the suction tool for an electric vacuum cleaner according to any one of claims 1 to 9. Vacuum cleaner with a connection port that connects to.
11. A vacuum cleaner main body having a dust collecting chamber for collecting dust and an electric blower inside, and a hose having one end connected to a connection port of the electric vacuum cleaner main body and an extension pipe connected to the other end. The suction tool for a vacuum cleaner according to claim 9 for connecting a connection portion to the end face portion on the opposite hose side of the extension pipe is provided, and the hose and the extension pipe are provided with a conductive wire for electrical connection to the vacuum cleaner main body side. A vacuum cleaner in which an electrical connection portion for electrical connection with the electrical connection portion of the suction tool is provided at the connection portion of the suction tool of the extension tube, and the conductive wire of the extension tube is electrically connected to the electrical connection portion of the extension tube.
Description: TECHNICAL FIELD [Detailed description of the invention]
[0001]
[Technical field to which the invention belongs]
The present invention relates to a suction tool for an electric vacuum cleaner having an electronic component storage chamber and an operating chamber located across a connecting pipe in the suction tool main body, and an electric vacuum cleaner using the suction tool for the electric vacuum cleaner.
0002.
[Conventional technology]
Conventionally, this type of suction tool for a vacuum cleaner has been configured as shown in FIGS. 6 to 7. The configuration will be described below.
0003
As shown in the figure, there is known a suction tool for an electric vacuum cleaner in which a rotary brush 3 driven by an electric motor 2 is built in a suction tool main body 1. In this type of suction tool for a vacuum cleaner, the suction tool main body 1 including the lower case 4 and the upper case 5 is opened downward by partition walls 6a, 6b, 7, and 8 and has a rotating brush 3 built-in. A suction chamber 9, a suction passage 10 communicating with the suction chamber 9, an operating chamber 11 incorporating an electric motor 2, and an electronic component storage chamber 13 incorporating a printed circuit board 12 are partitioned. Further, the connecting pipe 14 is supported at the rear portion of the suction tool main body 1 at the inlet portion of the suction passage 10 so as to be rotatable up and down, and the suction passage 10 communicates with the inside of the connecting pipe 14.
0004
Also, the communicating portion between the suction chamber 9 and the suction passage 10 is provided with a bridge portion 15 that traverses the suction passage 10 rises upward direction from both sides of the partition walls 7, 8 of the suction passage 10 in the lower case 4 side. The structure is such that a lead wire 17 from the electronic component storage chamber 13 to the operating chamber 11 crawls in a concave groove 16 formed above the crosslinked portion 15 and opens upward and exits in the left-right direction. Further, after assembly, the opening of the concave groove 16 is closed by the closing portion 18 formed in the upper case 5.
0005
[Problems to be Solved by the Invention]
In such a conventional configuration, in the communication portion between the suction chamber 9 and the suction passage 10, the suction air flows slightly upward as shown by the arrow in FIG. 7, so that the bridge portion 15 that greatly protrudes above the communication portion is formed. Since it is located just ahead of the strongest wind flow, there is a problem that the air passage resistance is increased and the noise due to the turbulent flow and the wind noise are increased.
0006
The present invention solves the above-mentioned conventional problems, and effectively utilizes the outer space of the wall body forming the suction passage in the connecting pipe without forming a bridge portion protruding from the communication portion between the suction chamber and the suction passage. The purpose is to assemble conductive wires from the electronic component storage room to the operating room to reduce noise such as turbulence and wind noise, and to reduce noise.
0007
[Means for solving problems]
In order to achieve the above object, the present invention comprises a suction tool main body having a suction port opened on the lower surface, a rotary brush rotatably provided facing the suction port, and an electric motor for rotationally driving the rotary brush. A connecting pipe having a suction passage communicating with the suction port is provided at the rear portion of the suction tool main body, and the suction tool main body is first stored with the connecting pipe sandwiched. A chamber and a second storage chamber are arranged, and the outside of the wall body forming the suction passage of the connecting pipe is covered with a cover body to form a storage space, and the first and second storage spaces are formed through the storage space. It is a suction tool for a vacuum cleaner that is configured to electrically connect the parts in the storage room with a conductive wire.
0008
As a result, it is possible to electrically connect each storage chamber on both sides of the connecting pipe via the storage chambers without providing a protruding bridge portion in the communication portion between the suction chamber and the suction passage, and noise due to turbulence. Noise such as wind noise and wind noise can be reduced to reduce noise.
0009
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention includes a suction tool main body having a suction port opened on the lower surface, a rotary brush rotatably provided facing the suction port, and an electric motor for rotationally driving the rotary brush. A connecting pipe having a suction passage communicating with the suction port is provided at the rear portion of the suction tool main body, and the suction tool main body is the first with the connecting body interposed therebetween. A storage chamber and a second storage chamber are arranged, and the outside of the wall body forming the suction passage of the connecting pipe is covered with a cover body to form a storage space, and the first and second storage spaces are formed through the storage space. It is a suction tool for electric vacuum cleaners, which is characterized in that the parts in the second storage chamber are electrically connected by a conductive wire, and even if a protruding bridging portion is not provided in the communication portion between the suction chamber and the suction passage. Each storage chamber on both sides of the connecting pipe can be electrically connected via the storage space, and noise such as turbulent flow noise and wind noise can be reduced to reduce noise.
0010
According to the second aspect of the present invention, a suction tool main body having a suction port opened on the lower surface, a rotating brush rotatably provided facing the suction port, and a rotating brush are arranged in the rotating brush and driven to rotate. An electric motor is provided, and a connecting pipe having a suction passage communicating with the suction port is arranged at the rear portion of the suction tool main body, and the suction tool main body is first sandwiched between the connecting pipes. The storage chamber and the second storage chamber are arranged, and the outside of the wall body forming the suction passage of the connecting pipe is covered with a cover body to form a storage space, and the first and second storage spaces are formed through the storage space. It is a suction tool for electric vacuum cleaners characterized in that the parts in the second storage chamber are electrically connected by a conductive wire, and it is not necessary to provide a protruding bridging portion in the communication portion between the suction chamber and the suction passage. , Each storage chamber on both sides of the connecting pipe can be electrically connected via the storage space, and noise such as turbulent flow noise and wind noise can be reduced and the noise can be reduced. Further, by incorporating the electric motor in the rotating brush, it is not necessary to dispose the electric motor at a position other than the rotating brush of the suction tool main body, and the suction tool main body can be miniaturized. In the case where the motor is built in the rotary brush, the outer diameter of the rotary brush is determined by the outer diameter of the motor. Therefore, if the motor is miniaturized, the outer diameter of the rotary brush can also be reduced. On the other hand, if you try to drive the rotary brush with sufficient torque, there is a limit to reducing the outer diameter of the motor, and even if you try to reduce the rotation of the motor with a speed reducer in order to generate torque, the motor still There is a limit to how small the outer diameter can be, and therefore the outer diameter of the rotating brush is larger than that of a normal rotating brush (there is no built-in motor inside the rotating brush), which reduces the size of the suction tool body. Then, it is necessary to narrow down the communication part between the suction chamber for accommodating the rotating brush and the suction passage. In the case where such a narrowing down is provided in the communication portion, if a bridge portion protruding from the communication portion is provided, turbulence is generated more and noise is generated, but the outside of the wall body forming the suction passage of the connecting pipe is provided. By covering the above with a cover body to form a storage space, the above problem can be solved.
0011
The invention according to claim 3 is the invention according to claim 1 or 2, wherein the connecting pipe is arranged so as to be rotatable in the vertical direction with respect to the suction tool main body, that is, the connecting pipe is attached to the suction tool main body. Even in the structure of being rotatably attached, the parts in the first and second storage chambers can be electrically connected by the conducting wire.
0012
The invention according to claim 4 is a wall body in the invention according to claim 3, wherein a rotating pipe that is rotatable in the circumferential direction is connected to the rear portion of the connecting pipe to form a suction passage for the rotating pipe. It is a suction tool for electric vacuum cleaners that forms a storage space for conductive wires by covering the outside of the suction chamber with a cover body, and is connected via the storage space without providing a protruding bridge portion in the communication portion between the suction chamber and the suction passage. Each storage room on both sides of the pipe can be electrically connected, and noise such as turbulent flow noise and wind noise can be reduced to reduce noise.
0013
The invention according to claim 5 is the suction tool for an electric vacuum cleaner provided with a slack portion of a conductive wire in the accommodation space in the invention according to any one of claims 1 to 4, and has a suction chamber. Even if a protruding bridge is not provided in the communication part with the suction passage, each storage room on both sides of the connecting pipe can be electrically connected via the storage space, and noise such as turbulent flow noise and wind noise can be obtained. Can be reduced and the noise can be reduced.
0014.
The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein a slack portion of a conductive wire is provided in at least one of a first storage chamber and a second storage chamber. It is a suction tool for electric vacuum cleaners, and it is possible to electrically connect each storage room on both sides of the connecting pipe via a storage space without providing a protruding bridge in the communication part between the suction chamber and the suction passage. It is possible to reduce noise such as noise caused by turbulent flow and wind noise, and to reduce noise.
0015.
The invention according to claim 7 is the suction tool for an electric vacuum cleaner provided with a holding portion for holding a conductive wire in the accommodation space in the invention according to any one of claims 1 to 6. Each storage chamber on both sides of the connecting pipe can be electrically connected via the accommodation space without providing a protruding bridge in the communication portion between the chamber and the suction passage, and noise and wind noise due to turbulence can be generated. The noise can be reduced and the noise can be reduced.
0016.
The invention according to claim 8 is a wall body forming a suction passage of a connecting pipe and holding a conductive wire at a position in front of the connecting portion with the rotating pipe in the invention according to claim 4. It is a suction tool for an electric vacuum cleaner that forms a portion, and each storage chamber on both sides of the connecting pipe is electrically connected via a storage space without providing a protruding bridge portion in the communication portion between the suction chamber and the suction passage. It is possible to reduce noise such as noise caused by turbulent flow and wind noise, and to reduce noise.
[0017]
The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein an electric connection portion is provided at the connection portion provided on the connecting pipe or the rotating pipe, and the electrical connection portion and the electric connection portion are provided. It is a suction tool for vacuum cleaners that is electrically connected to a conductive wire, and even if a protruding bridge is not provided in the communication part between the suction chamber and the suction passage, each storage chamber on both sides of the connecting pipe is electrically connected via the accommodation space. It is possible to reduce noise such as noise caused by turbulent flow and wind noise, and to reduce noise.
0018
The invention according to claim 10 is the suction tool for a vacuum cleaner according to any one of claims 1 to 9, in which a vacuum cleaner main body provided with a dust collecting chamber for collecting dust and an electric blower is provided. It is an electric vacuum cleaner equipped with a connection port that is connected so as to communicate with, and it is possible to reduce the noise of the electric vacuum cleaner by reducing the noise such as turbulent flow generated by the suction wind and the wind noise. It can be made quieter.
0019
The invention according to claim 11 is a vacuum cleaner main body having a dust collecting chamber for collecting dust and an electric blower inside, and one end is connected to a connection port of the electric vacuum cleaner main body, and an extension pipe is provided at the other end. The suction tool for a vacuum cleaner according to claim 9, wherein the hose to be connected and the suction tool for a vacuum cleaner for connecting the connection portion to the end face portion on the opposite side of the extension pipe are provided, and the hose and the extension pipe are electrically connected to the vacuum cleaner body side. In addition to providing a wire, an electrical connection portion that electrically connects to the electrical connection portion of the suction tool is provided at the connection portion of the suction tool of the extension tube, and the conductive wire of the extension tube is electrically connected to the electrical connection portion of the extension tube. It is a vacuum cleaner, and each storage chamber on both sides of the connecting pipe can be electrically connected via the accommodation space without providing a protruding bridge in the communication portion between the suction chamber and the suction passage, which is caused by turbulent flow. Noise such as noise and wind noise can be reduced to reduce noise.
0020
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
0021.
As shown in FIG. 5, the suction tool main body 19 has a built-in rotating brush 20 (see FIG. 3) that releases dust adhering to the surface to be cleaned such as a carpet, and has a connecting pipe 22 connected to the extension pipe 21 at the rear. It is provided so as to be rotatable in the vertical direction. The vacuum cleaner main body 23 is provided with a dust collecting chamber 24 and an electric blower 25 for collecting dust inside, and a hose 27 connected to an extension pipe 21 is connected to a connection port 26 provided in the vacuum cleaner main body 23. , The connecting pipe 22 of the suction tool main body 19 is configured to communicate with the connecting port 26.
0022.
As shown in FIGS. 1 to 4, the structure of the suction tool main body 19 includes a lower case 28 having an open upper surface and an upper case 29 coupled to the upper side of the lower case 28 and opening the lower surface. In the suction tool main body 19, partition walls 30 to 33 formed in the lower case 28 and the upper case 29 respectively provide a suction chamber 34 for accommodating the rotary brush 20, a communication portion 35 connected to the suction chamber 34, an operating chamber 36, and an electron. Each of the parts storage chambers 37 is divided into sections. Further, the suction chamber 34 is located at the front portion of the suction tool main body 19 and is arranged horizontally so as to form a suction port 38 on the lower surface portion. Further, the communication portion 35 is provided at the rear portion of the suction tool main body 19 at a substantially central portion in the left-right direction thereof. Further, the electronic component storage chamber 37 is located adjacent to one side of the communication portion 35 in the left-right direction, and the operating chamber 36 is located on the opposite side of the electronic component storage chamber 37 to the communication portion 35. Adjacent. That is, the electronic equipment housing 37 and the work movement chamber 36 is disposed across the consolidated tube 22 communicating with the communication unit 35.
[0023]
On the other hand, the connecting pipe 22 is sandwiched by the lower case 28 and the upper case 29 so as to be rotatable in a predetermined range in the vertical direction in a state where the front portion is located in the communication portion 35. That is, the support shafts 39 projecting from the left and right side surfaces of the front portion of the connecting pipe 22 are pivotally attached to the partition walls 30 and 33 which are the side walls on both the left and right sides of the communicating portion 35, and the inside of the connecting pipe 22 is A suction passage 40 is continuously formed rearward from the communication portion 35. Reference numeral 41 denotes a bent rotating pipe, the front portion of which is rotatably fitted and connected to the rear portion of the connecting pipe 22 in the circumferential direction. Further, a pipe cover 42 is attached to the rotating pipe 41 on the upper side of the outer peripheral surface.
0024
Further, the rotary brush 20 is rotatably arranged so as to face the suction port 38 provided on the lower surface of the suction tool main body 19, and is also provided on the outer peripheral surface of the substantially tubular brush holder 43 constituting the outer shape thereof. A plurality of brushes 44 that form a dust-raising portion are provided. In addition to the brush 44, the dust scraping portion may be a thin plate-shaped blade, a strip-shaped body having a wiping effect (for example, a cloth strip-shaped body), or the like.
0025
Inside the brush holder 43, as shown in FIG. 2, an electric motor 45 for rotationally driving the rotary brush 20, a reduction gear 46 for decelerating the rotation speed of the electric motor 45, and a gear for transmitting the output of the reduction gear 46 to the brush holder 43. It has a built-in 47a and so on. The electric motor 45 integrally connected to the speed reducing device 46 is fixed to a support portion 48 having a hollow shaft. The hollow shaft of the support portion 48 has an inner diameter of 13 mm so that cooling air can be smoothly introduced. The hollow shaft of the support portion 48 is supported by the inner ring of the bearing portion 49, and the outer ring of the bearing portion 49 is supported by the cap A50 fixed to the end of the brush holder 43.
0026
The gear 47a meshes with and is connected to the gear portion 47b formed on the inner surface portion of the substantially central portion of the brush holder 43 in the axial direction. On the outside of the gear portion 47b is provided with a cooling air passage hole 52, the passage hole 52 is in communication with the cooling air passage 53 through the outside of the hollow shaft or et motor 45 and reduction gear 46, the brush holder 43 It communicates with the ventilation holes 54 provided on the outer peripheral surface. A cap B56 integrally formed with a shaft 55 is fixed to the other end of the brush holder 43 and is rotatably supported by a bearing member 57 to the suction tool main body 19.
[0027]
Further, a printed circuit board 58 is arranged in the electronic component storage chamber 37. The printed circuit board 58 is provided with an overcurrent prevention device composed of a positive characteristic thermistor or the like that prevents an overcurrent from flowing through the electric motor 45.
[0028]
On the other hand, in the operating chamber 36, as shown in FIG. 4, when the suction tool main body 19 is lifted in the air, the power supply to the electric motor 45 that rotationally drives the rotary brush 20 is cut off to stop the rotation of the rotary brush 20. A safety device is configured. That is, the detection lever 59 for detecting the surface to be cleaned is rotatably provided with the support shaft 59a as a fulcrum, and when the roller 59b of the detection lever 59 comes into contact with the surface to be cleaned, it opposes the urging force of the spring 60 in the direction of arrow A. Rotate. Then, the moving body receiving portion 61 integrally formed with the support shaft 59a of the detection lever 59 rotates in the direction of arrow B, and the spherical moving body 62 held by the moving body receiving portion 61 also moves in that direction. Turn on the switch 63. When the suction tool main body 19 is lifted, the roller 59b separates from the surface to be cleaned, rotates in the direction of arrow B by the urging force of the spring 60, and the switch 63 is turned off. The motor 45 is turned on / off by turning the switch 63 on / off.
[0029]
Next, the electrical wiring structure will be described. As shown in FIGS. 1 to 3, terminal pins 64 are projected from the tip of the rotating pipe 41, that is, the connecting portion connected to the end of the extension pipe 21 on the anti-hose 27 side, from the vacuum cleaner main body 23. It is connected to the power supply of. Specifically, a conductive wire is provided in the extension pipe 21 and the hose 27 to supply power from the vacuum cleaner main body 23. The terminal pin 64 is electrically connected to an electrical connection portion provided at the end of the extension tube 21 and is electrically connected to the conductive wire of the extension tube. The terminal pin 64 electrically connected to the terminal pin 64 is an electrical connection portion of the suction tool and does not have to have a protruding shape like the terminal pin 64. If the electrical connection portion of the extension tube is a terminal pin, it may be used. It may be a contact piece that is inserted and brought into contact, and in short, it may be a configuration that can be electrically connected when the extension pipe 21 and the suction tool main body 19 are connected.
[0030]
The lead wire A65 is arranged in a storage space formed between the pipe cover 42 and the wall body forming the suction passage 40 inside the connecting pipe 22, and more specifically, along the outer upper surface of the wall body of the suction passage 40. It is led out from an opening near the support shaft 39 of the connecting pipe 22, penetrates the partition wall 30, and is introduced into the electronic component storage chamber 37. The other end of the lead wire A65 is connected to the printed circuit board 58. One lead wire B66, like the lead wire A65, is guided into the connecting pipe 22 through a storage chamber formed by the wall body of the suction passage 40 of the connecting pipe 22 and the pipe cover 42, and is sucked into the connecting pipe 22. The passage 40 is led out from the opening near the other support shaft 39 of the connecting pipe 22, penetrates the partition wall 33, is introduced into the operating chamber 36, and the other end is connected to the switch 63.
0031
Further, the lead wire C67 penetrates the partition wall 30 from the printed circuit board 58 in the electronic component storage chamber 37, and is provided in front of the wall body of the suction passage 40 and the pipe cover 42 from the opening near the support shaft 39 of the connecting pipe 22. It is introduced into the accommodation space formed by the protective cover 68, penetrates the partition wall 33 from the other opening of the connecting pipe 22, is introduced into the operating chamber 36, and the other end is connected to the switch 63.
[0032]
A protective cover 68 is formed on the outside of the wall body forming the suction passage 40 in the connecting pipe 22, and the lead wire A65, the lead wire B66, and the lead wire C67 are impacted from the outside of the suction tool main body 19. It protects from scratches. Further, a regulation rib 69, which is a kind of holding portion, is provided between the wall body forming the suction passage 40 in the connecting pipe 22 and the protective cover 68, and the wired lead wire B66 or lead wire C67. Is held and fixed in order to prevent the end portions of the rotating pipe 41 from coming into contact with each other and causing damage. Further, stress such as tensile force and cutting force is not applied to the lead wire B66 or the lead wire C67 when the connecting pipe 22 rotates in the vertical direction or when the rotating pipe 41 rotates. A slack portion, which is set to be larger than the vertical rotation dimension of the connecting pipe 22, is provided in the accommodation space formed by the wall body of the suction passage 40, the protective cover 68, and the pipe cover 42, or an electronic component. It is provided in at least one of the storage chamber 37 and the operating chamber 36.
0033
The wiring to the electric motor 45 is led from the printed circuit board 58 in the electronic component storage chamber 37 to the inside of the hollow shaft 48 formed at the end of the rotary brush 20 through the lead wire D70 through the partition wall 30. , It is connected to the control board 71 provided in the motor 45. The control board 71 is equipped with a rectifier for rectifying commercial power, a noise preventer, and the like.
0034
The operation and operation of the above configuration will be described.
0035.
First, the outline of the assembly method will be described. First, the lower Ke - in each predetermined position in the scan 28, the lower Ke - through the top opening of the scan 28, the communicating pipe 22, the rotary brush 20, the printed circuit board 58, the detection lever 59, the moving body receiving portion 61 , The moving body 62, the switch 63, and other parts are assembled from above. At the same time, the lead wire A65, the lead wire B66, the lead wire C67, and the lead wire D70 are similarly wired through the lower surface opening of the lower case 28.
0036
At that time, in particular lead C67 for connecting the switch 63 of the electronic equipment housing working chamber 36 and the printed circuit board 58 in 37 forms a suction passage 40 of the connecting pipe 22 through the partition wall 30 The lead wire C67 penetrates the partition wall 33 from the opening near the other support shaft 39 of the connecting pipe 22 along the outer upper surface of the wall body, and the lead wire C67 is a wall body and a protective wall 68 forming a suction passage 40 of the connecting pipe 22. It is held by the regulation rib 69 provided between the two.
0037
Next, the lead wire B66 connected to the switch 63 will be described. A terminal pin 64 is provided at the end of the lead wire B66, and the terminal pin 64 is provided so as to project from the tip of the rotating tube 41 and is connected to a power source from the vacuum cleaner main body 23. Then, the lead wire B66 is introduced into the operating chamber 36 along the outer upper surface of the wall body forming the suction passage 40 of the connecting pipe 22 through the partition wall 33 from the opening near the support shaft 39 of the connecting pipe 22. The other end is connected to the switch 63 and wired. One lead wire A65 is guided inside the connecting pipe 22 like the lead wire B66, and is near the other supporting shaft 39 of the connecting pipe 22 along the outer upper surface of the wall body forming the suction passage 40 of the connecting pipe 22. It is introduced into the electronic component storage chamber 37 through the partition wall 30 through the opening of. The other end of the lead wire A65 is connected to the printed circuit board 58. In this state, the surface of the rotating pipe 41 through which the lead wire A65 and the lead wire B66 pass is covered with the pipe cover 42. Next, the upper case 29 is joined onto the lower case 28 and fixed with screws or the like.
[0038]
In this way, when arranging each lead wire, wiring is processed inside the connecting pipe 22, the rotating pipe 41, and the pipe cover 42, so that the communication portion 35 between the suction chamber 34 and the suction passage 40 is provided. Since the protruding bridge portion can be eliminated and the communication portion 35 can be composed of the inner wall surfaces of the upper case 29 and the lower case 28, the suction passage 40 can be smoothly connected, so that the vacuum cleaner main body 23 can be used. The generated suction wind passes through the communication portion 35, which has no convex portion such as a bridge portion, and then passes through the suction passage 40 after being rectified from the suction chamber 34. Therefore, the occurrence of turbulence is reduced and wind noise is generated. Noise can be reduced to reduce noise.
[0039]
Further, the connecting pipe 22 is rotatable in a predetermined range in the vertical direction by the upper case 29 and the lower case 28, and the rotating pipe 41 is also rotatable in a predetermined range in the circumferential direction of the connecting pipe 22. The slack portion provided on the lead wire A65, the lead wire B66, and the lead wire C67 prevents the pulling force and the cutting force acting during rotation from being applied to each lead wire. When the rotating pipe 41 is not provided, the amount of slack in the slack portion provided on the lead wire A65 and the lead wire B66 can be reduced.
0040
In this embodiment, an example is shown in which the first storage chamber is the electronic component storage chamber 37 and the second storage chamber is the operating chamber 36. For example, an electric motor is provided in the second storage chamber as in the conventional case. The rotating brush may be driven by a belt. In short, the first storage chamber and the second storage chamber are provided with parts that need to be electrically connected via conductive wires. Can be applied if. The reason why the first and second storage chambers are provided across the connecting pipe 22 is that it is necessary to consider the left-right balance when storing the parts in the suction tool main body, for example, the suction tool main body. This is to prevent the suction tool main body from tilting to the left or right when the is lifted, which deteriorates the cleaning workability.
[0041]
【Effect of the invention】
According to the suction tool for an electric vacuum cleaner of the present invention, a suction port main body having a suction port opened on the lower surface, a rotary brush rotatably provided facing the suction tool main body, and an electric motor for rotationally driving the rotary brush. In the rear part of the suction tool main body, a connecting pipe having a suction passage communicating with the suction port is arranged so as to be rotatable in the vertical direction with respect to the suction tool main body. The suction tool main body is provided with a first storage chamber and a second storage chamber with the connecting body interposed therebetween, and the outside of the wall body forming the suction passage of the connecting pipe is covered with a cover body. A suction tool for an electric vacuum cleaner, characterized in that a storage space is formed and parts in the first and second storage chambers are electrically connected by conductive wires through the storage space. Each storage chamber on both sides of the connecting pipe can be electrically connected via the storage space without providing a protruding bridge in the communication part with the suction passage, and noise such as turbulence and wind noise can be obtained. Can be reduced and the noise can be reduced.
[Simple explanation of drawings]
FIG. 1
FIG. 2 is an exploded perspective view of a main part of a suction tool for a vacuum cleaner showing an embodiment of the present invention.
Top view of the vacuum cleaner suction tool with the upper case removed [Fig. 3]
Partially broken side view of the suction tool for the vacuum cleaner [Fig. 4]
FIG. 5 is a cross-sectional view of the operating chamber of the suction tool for the vacuum cleaner.
Overall perspective view of the vacuum cleaner [Fig. 6]
FIG. 7 is a perspective view of a main part of a suction tool for a conventional vacuum cleaner.
Central vertical cross-sectional view of the suction tool for vacuum cleaner [Explanation of symbols]
19 Suction tool body 20 Rotating brush 22 Connecting pipe 36 Operating chamber (second storage chamber)
37 Electronic component storage room (first storage room)
41 Rotating pipe 42 Tube cover (cover body)
45 Motor 64 Terminal pin (electrical connection)
65 Lead wire A (conductive wire)
66 Lead wire B (conductive wire)
67 Lead wire C (conductive wire)
68 Protective cover (cover body)
69 Regulatory rib (holding part)
