JP3813811B2 - Suction port and vacuum cleaner - Google Patents

Suction port and vacuum cleaner Download PDF

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JP3813811B2
JP3813811B2 JP2000344198A JP2000344198A JP3813811B2 JP 3813811 B2 JP3813811 B2 JP 3813811B2 JP 2000344198 A JP2000344198 A JP 2000344198A JP 2000344198 A JP2000344198 A JP 2000344198A JP 3813811 B2 JP3813811 B2 JP 3813811B2
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dust
cleaning
suction port
chamber
blade
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JP2002143049A (en
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育弘 大津
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Toshiba TEC Corp
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Toshiba TEC Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、掃除機本体内の電動送風機から排出される空気を、吸込み口体に戻すとともに、これら吸込み口体と掃除機本体とにわたって循環させながら掃除をする空気循環式、又は、このような空気循環を伴うことなく、被掃除面に吸込み力を及ぼしながら掃除をする非空気循環式の電気掃除機に関するとともに、これらの掃除機に用いられる吸込み口体に関する。
【０００２】
【従来の技術】
非空気循環式電気掃除機の吸込み口体において、回転方向及び回転数を異にする２本の回転ブラシを床面に平行に配設するとともに、両ブラシを吸込み口体の前後方向に互いにオーバーラップさせることにより、床面の塵埃のかき出し及び叩き出しを効果的に行なって塵埃の補集性を向上でき、かつ、小形化も図れる吸込み口体が提案されている（特開平５−１１１４４９号公報参照）。
【０００３】
この吸込み口体が備える前後２本の回転ブラシは、その回転棒（清掃体軸）の外周に複数のブレードを捻じって取付けた構成である。それにより、ブレードの回転軌跡がオーバーラップしているにも拘らず、回転時にブレードが干渉することをなくして、これらブレードによる被掃除面の塵の掻き出しや叩き出しを効果的に行わせている。
【０００４】
ところで、掃除に伴って回転ブラシには綿状の塵が付着することは避けられず、その付着を放置する場合には、綿状の塵が紐状に成長して回転ブラシの外周に巻付くことは知られている。前記公報に記載の吸込み口体においても、その回転ブラシに綿状の塵が付着することは例外ではなく、そして、前記公報には、回転ブラシのブレードに対する塵の付着量を少なくする点については、何ら特別な対策は講じていない。そのため、前記公報に記載の吸込み口体は、その回転ブラシ自体をしばしば掃除する手間を要する。
【０００５】
前記公報に記載の吸込み口体では、その回転ブラシのブレードがいかなる材質であるのか言及されていないが、ブレードとして例えばブラシ毛を一列に連なるように連続させてなる、いわゆる毛ブラシ状ブレードは、絨毯や畳みの掃除に適し、又、軟質合成樹脂製の成形品からなる板状ブレードはフローリング床等の掃除に適している。そのため、被吸込み口体の回転ブラシが、毛ブラシ状ブレードと板状ブレードとを備えることは、各種の被掃除面の掃除に対する適合性が良い点で好ましい。このような構成は、単一の回転ブラシを備えた吸込み口体では従来知られている。
【０００６】
しかし、毛ブラシ状ブレードは、その先端縁が多数のブラシ毛の毛先で割れた状態に形成されているので、板状ブレードに比較して、綿状の塵が容易に付着し易い。それにも拘らず、前記両種のブレードを有した回転ブラシ付きの従来の吸込み口体では、付着した綿状の塵を取除くための格別な工夫を講じていないので、前記公報のものと同様に回転ブラシ自体をしばしば掃除する手間を要する。
【０００７】
【発明が解決しようとする課題】
本発明が解決しようとする課題は、塵取り性能を向上できるとともに掃除中に塵が付着する回転清掃体に対する掃除の手間を軽減できる吸込み口体及び電気掃除機を得ることにある。
【０００８】
【課題を解決するための手段】
本発明は、被掃除面に臨む塵取り開口を有する清掃体収容室を吸込み口体主部に設け、この清掃体収容室に前記塵取り開口において互いに向かい合う方向に回転する２本の回転清掃体を並べて収容し、これら２本の回転清掃体の回転に伴い被清掃面から掻き上げられて前記２本の回転清掃体間を通過した塵を前記吸込み口体主部に取付けられた継手管に吸込む吸込み口体を前提とする。
【０００９】
そして、前記課題を解決するために、請求項１の発明は、前記清掃体収容室が、前記２本の回転清掃体を覆っていて前記２本の回転清掃体によって満たされるような大きさに形成されているとともに、前記吸込み口体主部が、前記清掃体収容室が延びる方向と同方向に延びて前記清掃体収容室の上側に設けられた塵移送室と、前記両室を連通して前記清掃体収容室の上に設けられ前記掻き上げられた塵が通過する連通口と、前記塵移送室の長手方向の端部に設けられて前記清掃体収容室外の空気を前記塵移送室に前記清掃体収容室を流通させることなく導入する通気部とを夫々備え、前記継手管が、前記塵移送室内を長手方向に流動する気流を吸込むように前記通気部から離れた位置で前記塵移送室に連通して前記吸込み口体主部に取付けられ、前記両回転清掃体の内の少なくとも一方の回転清掃体が１以上の毛ブラシ状ブレードからなる清掃要素を備えるとともに、他方の回転清掃体が１以上の板状ブレードからなる清掃要素を備え、これら毛ブラシ状ブレードと板状ブレードとが互いに接しながら回転するように軸方向から見たときの前記清掃要素の回転軌跡をオーバーラップさせたことを特徴としている。
【００１０】
請求項１の発明は、空気循環式又は非空気循環式の電気掃除機用の吸込み口体に適用できる。又、請求項１の発明において、回転清掃体は、清掃体軸の周面に、清掃要素としての軟質合成樹脂製の板状ブレード又は起毛布製の板状ブレード、或はブラシ毛をブレード状に一連なりに連続させてなる毛ブラシ状ブレードを、清掃体軸から放射方向に突出するように取付けてなる回転清掃体を用いることができ、前記各ブレードは、清掃体軸と平行に延びて取付けられていても、或は清掃体軸に対して螺旋状に巻付くように取付けられていてもよいとともに、清掃体軸の周方向に間隔を置いて複数列設けることもできる。又、両回転清掃体の内の一方の回転清掃体が備えるブレードは、毛ブラシ状ブレードだけであってもよいが、この場合他方の回転清掃体が備えるブレードは板状ブレードを少なくとも備えておればよく、又、両回転清掃体の内の少なくとも一方の回転清掃体には異種のブレードを交互に設けた回転清掃体を用いることもできる。
【００１１】
請求項１の発明では、２本の回転清掃体が掻き上げた塵を、清掃体収容室とは別の塵移送室を流れる空気によって吸込み側に移送させるから、吸込み力が波及しづらい吸込み口体の幅方向の端部において掻き上げられた塵であっても、これを空気移送して継手管に吸込ませることができ、したがって、塵取り性能を向上できる。更に、請求項１の発明では、毛ブラシ状ブレード及び板状ブレードで形成された清掃部材を有しているため、被掃除面に対して毛ブラシ状ブレードによる塵の掻き出しと板状ブレードによる塵の掻き出しとを行うことができ、各種の被掃除面の掃除に対する適合性が良い。そして、前後２本の回転清掃体は、それらの内の少なくとも一方に設けられた毛ブラシ状ブレードと他方に設けられた板状ブレードとを互いに接触させながら回転駆動されるので、毛ブラシ状ブレードよりも腰がある板状ブレードは、毛ブラシ状ブレードにこれを叩くように当るに引続いて毛ブラシ状ブレードを擦るようになる。それに伴い、掃除中に毛ブラシ状ブレードに付着している塵を板状ブレードによって取除くことができる。
【００１２】
請求項２の発明は、請求項１に記載の両回転清掃体が塵取り開口において互いに向かい合う方向に回転されることを特徴としている。
【００１３】
この発明においては、２本の回転清掃体が被掃除面から掻き上げる塵を、これら回転清掃体間に通して上方に送り出すことができ、掻き上げた塵の送り出し位置を定め易い。
【００１４】
請求項３の発明は、請求項１又は２に記載の両回転清掃体のいずれもが、毛ブラシ状ブレードからなる第１清掃要素と、第１清掃要素よりも出幅が短い板状ブレードからなる第２清掃要素とを夫々備えており、両回転清掃体を軸方向から見て、両回転清掃体の第１清掃要素と第２清掃要素との回転軌跡がオーバーラップされているとともに、両回転清掃体の第２清掃要素の回転軌跡が軽微に接触又は近接していることを特徴としている。
【００１５】
この発明においては、互いにオーバーラップしている毛ブラシ状ブレードと板状ブレードとの相互関係によって、毛ブラシ状ブレードに付着している塵を掃除中に板状ブレードによって取除くことができるだけではなく、毛ブラシ状ブレードよりも腰がある前後両回転清掃体の板状ブレード同士は、接することがなく、或は接触するとしても軽微に接するので、これら板状ブレード同士が無理矢理撓むようなことが防止される。
【００１６】
請求項４の発明は、請求項１〜３の内のいずれか一項に記載の両回転清掃体の回転速度が互いに異なっていることを特徴としている。
【００１７】
この発明においては、前後２本の回転清掃体の相対的回転速度差により、互いにオーバーラップしている毛ブラシ状ブレードと板状ブレードとが接する機会を多く確保できる。
【００１８】
請求項５の発明は、掃除機本体内の電動送風機の動作により、前記掃除機本体の集塵室に連通された吸込み口体の塵取り開口から被掃除面の塵を空気とともに吸込んで、この吸込んだ塵を前記集塵室内のフィルタに通して捕捉する電気掃除機において、前記吸込み口体に請求項１〜４の内のいずれか一項に記載の吸込み口体を用いたことを特徴としている。
【００１９】
この請求項５の発明においては、毛ブラシ状ブレードに付着している塵を、掃除中に板状ブレードによって取除くことができる吸込み口体を備えるから、掃除中に塵が付着する回転清掃体に対する掃除の手間を軽減できる非空気循環式の電気掃除機を提供できる。
【００２０】
請求項６の発明は、電動送風機を内蔵した掃除機本体の集塵室に連通された吸込み口体の塵取り開口から被掃除面の塵を取込んで、この取込んだ塵を前記集塵室内のフィルタに通して捕捉し、前記フィルタを通過して前記電動送風機から排出された空気を前記吸込み口体に戻し、この排出空気を前記掃除機本体と前記吸込み口体とにわたって循環させながら掃除をする電気掃除機において、前記吸込み口体に請求項１〜４の内のいずれか一項に記載の吸込み口体を用いたことを特徴としている。
【００２１】
この請求項６の発明においては、毛ブラシ状ブレードに付着している塵を、掃除中に板状ブレードによって取除くことができる吸込み口体を備えるから、空気循環式の電気掃除機を提供できる。
【００２２】
【発明の実施の形態】
以下、図１〜図１０を参照して本発明の第１実施形態を説明する。
【００２３】
図１は空気循環式電気掃除機Ａの全体を示す斜視図であり、同図中符号１は一対の車輪２（一方のみ図示）及び図示しない旋回輪により被掃除面上を自在に移動できる掃除機本体である。掃除機本体１には、その前部に設けられた吸塵口３に、可撓性の吸塵ホース４と非可撓性の吸塵パイプ５とを有する吸塵用連通管６の一端部つまり吸塵ホース４に設けた接続筒７が取外し可能に嵌合して接続され、連通管６の他端部つまり吸塵パイプ５には後述の吸込み口体８が接続されている。吸塵口３には後述の電動送風機から排出された空気が、吸塵空気と混じることがないように導かれる。
【００２４】
複数の合成樹脂製ケース部材を組合わせて構成された掃除機本体１の前部には、上方を開口した集塵室が形成されているとともに、後部には送風機室が形成されている。集塵室には、その上面開口を通してフィルタとしての集塵袋９が出し入れ可能に収容され、集塵室の上面開口は開閉自在なケース蓋１０によって気密的に閉じられている。両側部に前記車輪２が回転自在に取付けられた送風機室には、電動送風機１１と、コードリール（図示しない）等が収容されている。電動送風機１１から排出された空気（排気）は、集塵室の一側部を迂回して配置された図示しない戻し風路部材を介して吸塵口３に導かれるように構成されている。なお、図１中１３はコードリールに巻き取られる電源コードの先端に接続された差込プラグを示している。
【００２５】
吸塵ホース４は、例えば同軸構造の２重管であって、その蛇腹状内管の内側空間で作られる通気路には後述の吸込み口体８で取込まれた塵が循環する空気とともに通され、前記内管と蛇腹状外管との間に形成された環状の通気路には前記戻り風路部材から導かれた排気が吸塵口３を経て通される。この吸塵ホース４の先端部にはく字状に形成されるとともに上方に突出する把手１５を有した接続筒１６が設けられていて、把手１５には電動送風機１１等に対する各種の運転開始及び運転中止を指示するための手元操作用の制御スイッチ１７が設けられている。
【００２６】
接続筒１６に着脱可能に接続される２本継ぎの吸塵パイプ５は、いずれも合成樹脂製の硬質管からなり、塵埃を吸込むための第１パイプ５ａと排気を吸込み口体８内に戻すための第２パイプ５ｂとを有している。第１パイプ５ａは吸塵ホース４の内管に接続筒１６を介して連通され、同様に第２パイプ５ｂは吸塵ホース４の内外両管間の環状通気路に接続筒１６を介して連通される。
【００２７】
次に、図２〜図１０を参照して吸塵パイプ５の先端部に接続される前記吸込み口体８について説明する。吸込み口体８は、掃除機本体１側に連通される接続部としての合成樹脂製の継手管２１と、合成樹脂製の吸込み口体主部２２と、前後２本の回転清掃体２３、２４と、清掃体駆動装置２５とを備えている。
【００２８】
前記吸塵パイプ５の先端部に着脱可能に嵌入して取付けられることにより掃除機本体１の吸塵口３に連通される継手管２１は、図３、図７、図８に示すように吸込み口体主部２２への固定部３１と、この固定部３１に回動可能に連結された可動部３２とを備えている。
【００２９】
固定部３１は、固定基管３３と、この基管３３の軸回りに沿って回動可能な回動管３４とを備えている。この固定部３１は、その軸線を前後方向に沿わせた姿勢で、固定基管３３の前端部を吸込み口体主部２２の後述する主部下ケースと主部上ケースとで上下から挟まれて、吸込み口体主部２２の後部側でかつこの主部２２の幅方向中央部に固定されている。
【００３０】
固定基管３３は、前後両端が夫々開口された内管部３３ａと、後端が開口された外管部３３ｂと、外管部３３ｂの前端を閉じるようにして両管部３３ａ、３３ｂを一体に連結した前壁３３ｃとを有している。内管部３３ａは外管部３３ｂより長い。内管部３３ａの前端部は、前壁３３ｃを前方に貫通して突出され、吸込みの入口をなしている。内管部３３ａは吸込み風路の一部をなし、内外両管部３３ａ、３３ｂ間には戻り風路の一部をなす通路３５が形成されている。前壁３３ｃには１以上の通気口３６（図８参照）が開けられていている。
【００３１】
回動管３４の前部は二重管構造である。この前部を前記内外両管部３３ａ、３３ｂの外周にこれらの周面に沿って回動可能に夫々嵌合して、回動管３４は固定部３１にその後側から取付けられている。回動管３４はその後部に後面から上面にわたって開放する凹み溝３７を有している。回動管３４内には戻り風路の一部をなす通路３８（図８参照）が通路３５に連通して形成されている。
【００３２】
図３及び図８に示すように可動部３２は、塵埃を吸込むために内管部３３ａに連通される第１パイプ４１と、排気を吸込み口体主部２２内に戻すために通路３８に連通される第２パイプ４２とを有している。第１パイプ４１は前記吸塵パイプ５の第１パイプ５ａに着脱自在に嵌合して接続され、第２パイプ４２がその後端に有する接続部４２ａは吸塵パイプ５の第２パイプ５ｂに着脱自在に嵌合して接続される。
【００３３】
この可動部３２の前端部は、凹み溝３７内に収められて回動管３４の後部に連結されている。この連結は、図８に示されるように第２パイプ４２の両側に互いに逆向きに一体に突設した連結筒部４３を、回動管３４の後部に開けた取付け孔３９に回動可能に嵌合させて行われている。この連結によって、連結筒部４３を介して第２パイプ４２と前記通路３８とが連通され、かつ、可動部３２は、取付け孔３９及び連結筒部４３を中心として略９０°の範囲にわたり前記凹み溝３７に沿って可動できるように取付けられる。
【００３４】
なお、図２中４５は清掃体駆動装置２５に電力を供給するための一対の端子ピンのうちの一方を示しており、これらのピン４５は吸塵パイプ５に継手管２１を接続した時に、吸塵パイプ５の先端部に設けた図示しない端子接触片に接続される。それにより、端子ピン４５から清掃体駆動装置２５に至る電気配線４６（図３参照）、及び吸塵パイプ５内の図示しない電気配線を介して、前記制御スイッチ１７による清掃体駆動装置２５に対する通断電がなされる。
【００３５】
図３〜図５に示すように吸込み口体主部２２は、主部上ケース５１と、主部下ケース５２と、これらの間に挟着される主部中ケース５３とを有して形成され、主部上下両ケース５１、５２はねじ止めにより連結されている。主部上ケース５１は、その裏面に複数のリブを有し、これらリブで主部中ケース５３を上方から押さえつけた状態で、主部下ケース５２に被着されている。主部下ケース５２の底壁には、複数の走行用のローラ５４（図９参照）が取付けられている。吸込み口体主部２２内には、循環風吹出し室５６と、清掃体収容室５７と、塵移送室５８とが設けられている。
【００３６】
循環風吹出し室５６は、主部上下ケース５１、５２と主部中ケース５３とにより仕切られる吸込み口体主部２２の内部空間で形成されていて、その前部は塵移送室５８の上側に被さるように設けられている。
【００３７】
清掃体収納室５７には前記２本の回転清掃体２３、２４が互いに平行に並べて収容されている。清掃体収容室５７は、主部下ケース５２の底壁に開口して床等の被掃除面に臨む塵取り開口５７ａを有している。清掃体収容室５７は、そこに収容された２本の回転清掃体２３、２４によって略満たされるような大きさに形成されている。そのため、この収容室５７の内面は、並設された２本の回転清掃体２３、２４の回転軌跡Ｒ１（図４及び図５中一点鎖線参照）との間に比較的大きな隙間を作ることなく接近するように、これら回転清掃体２３、２４を前後及び上側から覆って設けられている。
【００３８】
なお、図３〜図６中５９は主部下ケース５２の前壁を斜めに貫通して設けられた１以上の吸込み孔であって、その後端は清掃体収容室５７に開口されている。この吸込み孔５９は吸込み口体８の前縁を壁際に押付けた際に、この壁際の隅部の塵を吸込むために設けられている。
【００３９】
主部中ケース５３は、主部下ケース５２の前部上面に起立されかつ略長方形状をなして互いに連続するリブ５２ａ〜５２ｄを上方から覆って取付けられ、これらリブ５２ａ〜５２ｄと共に塵移送室５８を区画形成している。清掃体収容室５７の上側にこの収容室５７と略同じ長さを有して設けられた塵移送室５８は、清掃体収容室５７が延びる方向と同方向、つまり、清掃体収容室５７と同様に吸込み口体８の幅方向に延びているとともに、清掃体収容室５７と連通口６１を通して連通されている。吸込み口体８を前後方向に沿って断面した時に現われる塵移送室５８の流路断面積は、同様な清掃体収容室５７の流路断面積よりも小さい。それにより、吸込み口体８の幅方向に沿って塵移送室５８を流れる空気の流速が、同様に吸込み口体８の幅方向に沿って清掃体収容室５７を流れる空気の流速より速くなるように設定されている。
【００４０】
連通口６１も清掃体収容室５７と略同じ長さで吸込み口体８の幅方向に延びて設けられている。連通口６１は、清掃体収容室５７と塵移送室５８との間を一部仕切って塵移送室５８の後部底壁をなして設けられた塵受け棚６２によって、吸込み口体８の前後方向に絞られている。この連通口６１は前記前後一対の回転清掃体２３、２４に跨るようにこれら清掃体２３、２４の真上に対向している。そのため、連通口６１は回転清掃体２３、２４のオーバーラップ部分に対向している。連通口６１の上方に対向する主部中ケース５３の対向壁部分は、上側に行くほど連通口６１に被さるように傾斜されたガイド壁５３ａをなしている。したがって、このガイド壁５３ａは上側に行くほど塵受け棚６２に近付けられている。
【００４１】
塵受け棚６２は後側の回転清掃体２４を上方から覆って設けられている。この棚６２は継手管２１の内管部３３ａに近づくにしたがって次第に下がるように傾斜されていて、そのため、本実施形態では逆ハの字状に傾けられている。それにより、内管部３３ａへの塵を含んだ空気の吸込みをより容易にしている。
【００４２】
塵受け棚６２の前側の先端縁６２ａは上向きに立ち上げられている。この先端縁６２ａの上端の高さは塵受け棚６２の根元より高くなっており、それに伴い塵受け棚６２の上面は凹溝状（樋状）をなしている。
【００４３】
主部中ケース５３の前記継手管２１における固定基管３３と対向する部分、本実施形態では主部中ケース５３の長手方向中央部には、上方及び後方に広がる広がり部５３ｂを有している。広がり部５３ｂの後縁は固定基管３３における内管部３３ａの前縁に被せられている。そのため、広がり部５３ｂを介して吸気用の内管部３３ａと塵移送室５８とが連通されているとともに、塵移送室５８及び前記連通口６１を介して吸気用の内管部３３ａと清掃体収容室５７の長手方向中間部とが連通されている。しかも、図３及び図７に示すように継手管２１と清掃体収容室５７との連通箇所に対応する塵受け棚６２の先端縁６２ａ側部分は切り欠かれている。この切欠き６３によって、前記連通口６１は部分的に継手管２１側に寄るように後側に拡大されている。
【００４４】
又、図４〜図８に示すように主部下ケース５２には前記リブ５２ｂと対向し、かつ、略平行な上向きのリブ５２ｅが設けられ、これら相対向するリブ５２ｂ、５２ｅ間には前記塵移送室５８の後側に沿って吸込み口体主部２２の幅方向に延びる風路６５が設けられている。風路６５の長手方向中間部は前記通気口３６に連通されているとともに、風路６５の上方は前記循環風吹出し室５６に連通されている。そのため、前記電動送風機１１から排出されて通気口３６から流出した空気は、塵移送室５８の後側を迂回するように吸込み口体主部２２の幅方向に風路６５に沿って流動しながら、循環風吹出し室５６に供給され満たされる。
【００４５】
図５〜図７に示すように主部中ケース５３の長手方向両端部上面には塵移送室５８の長手方向両端部の後部側に連通して通気部６６、６８が開口されている。更に、主部中ケース５３の長手方向両端部上面には、通気部６６、６８の前側に隣接位置して通孔からなる他の通気部６７、６９が形成されている。これら通気部６７、６９は図６で代表して示すように連通口６１の長手方向両端部に対向していて、結果的に清掃体収容室５７の長手方向両端部にその上方から連通して設けられている。
【００４６】
更に、主部中ケース５３の長手方向両端部には、前後方向に対応する一方の通気部６６、６７の境をなして下向きに突出するガイドリブ５２ｆが一体形成されているとともに、前後方向に対応する他方の通気部６８、６９の境をなして下向きに突出するガイドリブ５２ｇが一体形成されている。ガイドリブ５２ｇ、５２ｆの下端は、図５及び図６に示すようにリブ５２ｂとともに塵受け棚６２を樋状とする上向きの先端縁６２ａの長手方向の端部に、接触ないしは近接されている。
【００４７】
吸込み口体主部２２の長手方向一端側には、前記清掃体駆動装置２５が収容されている。この清掃体駆動装置２５は、図７及び図８に示すように電動モータ７１と、前後一対の互いに噛合う図示しない最終歯車と、一方の最終歯車及び電動モータ７１の出力軸とを連結した図示しない伝動機構と、前記最終歯車及び伝動機構への塵埃の付着を防止するために、電動モータ７１の出力軸側をも被って設けられた防塵ケース７２と、前記両最終歯車に個別に連結されるとともに防塵ケース７２の側面に露出するように並べて設けられた前後一対の継手７３、７４（図６参照）とを備えている。一対の最終歯車には例えば同一径で同一歯数の歯車が使用されており、両最終歯車及びこれらに連結された継手７３、７４は互いに逆方向に回転駆動される。一対の継手７３、７４は清掃体収容室５７内に臨んでいる。最終歯車及び伝動機構は本実施形態の場合歯車列で形成してあるが、これには制約されない。この清掃体駆動装置２５は、前記風路６５から流出されて通気部６８に至る風に晒されて空冷される。
【００４８】
清掃体駆動装置２５が設置された側と反対側に位置する清掃体収容室５７の端部には、図示しない前後一対の軸受サポート部が前記図示しない両継手７３、７４の夫々に個別に対応して設けられている。清掃体収容室５７には前後一対の回転清掃体２３、２４が後述のように取外し可能に収容されている。
【００４９】
図９及び図１０に示すように両回転清掃体２３、２４は、いずれも清掃体軸８１の一端部に継手８２を取付けるとともに、他端部に清掃体軸８１を回転自在に支持する軸受８３を取付け、かつ、これら継手８２と軸受８３との間に、第１、第２の清掃要素を夫々２枚づつ螺旋状に捻じれるように巻付けて形成されている。第１の清掃要素には軟質合成樹脂により成形されたゴム板状ブレード８４が使用されており、第２の清掃要素にはブラシ毛を一列に連続するように並べてなる毛ブラシ状ブレード８５が使用されている。板状ブレード８４は、毛ブラシ状ブレード８５よりも腰があって変形しずらく、かつ、毛ブラシ状ブレード８５よりも清掃体軸８１からの放射方向への出幅は短い。なお、板状ブレード８４には起毛布を用いることもできる。
【００５０】
両回転清掃体２３、２４は好ましくは同径であり、それらの直径は、最も出幅が長い毛ブラシ状ブレード８５の回転軌跡によって規定される。図４及び図５に板状ブレード８４の回転軌跡を符号Ｒ２で示すとともに、毛ブラシ状ブレード８５の回転軌跡を符号Ｒ１で示す。この図４及び図５に示されるように回転清掃体２３、２４は、それらを軸方向から見たときに、両回転清掃体２３、２４が有する板状ブレード８４の回転軌跡Ｒ２が軽微に接するとともに、毛ブラシ状ブレード８５の回転軌跡Ｒ１が互いに吸込み口体８の前後方向にオーバーラップする状態にして、清掃体収容室５７に収容される。図４中Ｒ３は前記オーバーラップの寸法を示している。なお、本発明において両回転清掃体２３、２４が有する板状ブレード８４の回転軌跡Ｒ２は接触させることなく近接させてもよい。以上のようにオーバーラップされた状態で両回転清掃体２３、２４は、それらが同期して回転されるときには、板状ブレード８４の先端部が毛ブラシ状ブレード８５に当ることができる関係位置に配置されている。又、前記収容状態において、両回転清掃体２３、２４のブレード８４、８５の先端部は、塵取り開口５７ａを通過して被掃除面に接するようになっている。
【００５１】
前側の回転清掃体２３は、その一端部の継手８２を清掃体駆動装置２５が有する前記前側の継手７３に挿脱可能に凹凸嵌合させて接続されるとともに、他端部の軸受８３を主部下ケース５２の前記図示しない前側の軸受サポート部に下側から嵌め付けることによって、清掃体収容室５７の前部に回転可能に取付けられ、この逆の手順によって取外すことができる。同様に、後側の回転清掃体２４も、その一端部の継手８２を清掃体駆動装置２５が有する前記後側の継手７４に挿脱可能に凹凸嵌合させて接続されるとともに、他端部の軸受８３を主部下ケース５２の前記図示しない後側の軸受サポート部に下側から嵌め付けることによって、清掃体収容室５７の後部に回転可能に取付けられ、この逆の手順によって取外すことができる。
【００５２】
なお、主部下ケース５２にはその下側から清掃体収容室５７の軸受サポート部側の端部に対応する部分を閉じる押さえ板８８（図９参照）が着脱可能に取付けられている。この取付けによって、前後の軸受サポート部が下側から塞がれて、これからの継手８２の脱落が防止される。
【００５３】
前記構成において、吸込み口体８の可動部３２の第２パイプ４２、回動管３４の通路３５、回動管３４の通気口３６、風路６５、循環風吹出し室５６、通気部６６、６８、及び塵移送室５８は、この記載順に互いに連通されていて、掃除機本体１の電動送風機１１から排出される空気を、吸込み口体８内において導く戻り風路を形成している。又、可動部３２の第１パイプ４１及びこれに直接連通した回動基管３３の内管部３３ａは、掃除機本体１の電動送風機１１に吸込まれる空気を吸込み口体８内において導く吸込み風路を形成している。この吸込み風路の入口である内管部３３ａの前端開口は、塵移送室５８及びこの移送室５８と連通口６１を介して清掃体収容室５７に連通されている。
【００５４】
そして、前記構成の吸込み口体８及びこれを備えた空気循環式電気掃除機を用いて掃除をする場合は、掃除機本体１に吸塵ホース４、吸塵パイプ５を図１に示すように順に接続し、吸塵パイプ５の先端部に吸込み口体８の継手管２１を接続し、吸込みホース４の把手１５に設けた制御スイッチ１７のうちのいずれかを閉成操作する。この閉成操作がされることにより掃除機本体１に内蔵の電動送風機１１が運転し、又、吸込み口体８に内蔵の清掃体駆動装置２５の電動モータ７１が運転されるに伴い、清掃体収容室５７内の前後一対の回転清掃体２３、２４、が、内内方向、つまり、塵取り開口５７ａにおいて互いに向かい合う方向（図３〜図５中矢印イ、ロ参照）に夫々同期して回転駆動される。なお、スイッチ操作により回転清掃体２３、２４の回転は任意に停止させることができる。
【００５５】
一方、電動送風機１１の吸込み作用によって、吸込み口体８の塵移送室５８内の空気が吸込まれ、この吸込み空気は、継手管２１における可動部３２の第１パイプ４１及びこれに直接連通した回動基管３３の内管部３３ａ、吸塵パイプ５、吸塵ホース４、及び吸塵口３の夫々の吸込み風路を経て（図１に実線の矢印で示す経路）集塵室内に吸込まれる。塵埃は集塵袋９によって除去され吸込み気流は排気風として電動送風機１１から排出される。この排気風は、図１に点線の矢印で示す経路をなす掃除機本体１の図示しない戻り風路部材、吸塵口３、吸塵ホース４、吸塵パイプ５、及び吸込み口体８に戻される。
【００５６】
そして、吸込み口体８に戻された排気は、可動部３２の第２パイプ４２、回動管３４の通路３５、回動管３４の通気口３６、風路６５、循環風吹出し室５６、通気部６６、６８を通って、塵移送室５８内にこの室５８の長手方向両端部から継手管２１側に向けて吹き出された後、既述の吸込みにより掃除機本体１側に回収される。以上の繰り返しにより電動送風機１１から排出された空気が掃除機本体１と吸込み口体８とにわたって循環される。
【００５７】
この場合、継手管２１の内外両管部間を通って風路６５に導かれながら循環風吹出し室５６内に吹き出された循環風は、主部中ケース５３の通気部６６、６８を通って塵移送室５８にその長手方向両端部から流入するとともに、ガイドリブ５２ｇ、５２ｆによって流れ方向を塵移送室５８にその長手方向に沿うように導かれる。それにより、循環風は、塵移送室５８の後部を長手方向に流動して継手管２１の吸込み部である内管部３３ａに吸込まれる。
【００５８】
又、掃除機本体１と吸込み口体８とにわたって循環する空気の一部は、既述のような風の流れとは別に、通気部６７、６９及びその直下の連通口６１の端部を通って清掃体収容室５７に流入し、この収容室５７を長手方向に流動しながら再び連通口６１を通って塵移送室５８に至り、この室５８を流れている風と合流して、継手管２１に対応する位置でこの継手管２１の内管部３３ａに吸込まれる。
【００５９】
以上のように掃除機本体１の電動送風機１１から排出された空気は、吸塵ホース４及び吸塵パイプ５の戻し用風路から吸込み口体８内での前記戻し風路を流動して、吸込み口体８内の前記吸込み風路に吸込まれた後、吸塵ホース４及び吸塵パイプ５の吸込み用風路を通って掃除機本体１の集塵室から電動送風機１１に吸込まれて循環する。
【００６０】
この主たる空気循環の経路中には清掃体収容室５７は含まれていないから、主たる循環空気が清掃体収容室５７を流通することはない。そのため、吸込み口体８内に導入された戻り空気の殆どは、清掃体収容室５７内の２本の回転清掃体２３、２４の外周面に沿って流通することがなく、清掃体収容室５７より上側の塵移送室５８を流通して継手管２１の内管部３３ａに吸込まれて掃除機本体１側に回収される。
【００６１】
前記主たる空気循環において、塵移送室５８にその長手方向の端部から導入される空気は、電動送風機１１の排気圧により元々流動するエネルギーを有していることに加えて、塵移送室５８の流路断面積が小さくなっていることにより、この塵移送室５８内を高速度で流通する。
【００６２】
一方、前記空気循環と同時に前後一対の回転清掃体２３、２４が回転駆動されて、そのブレード８４、８５によって被掃除面の塵が掻き上げられる。この場合、２本の回転清掃体２３、２４は、塵取り開口５７ａにおいて互いに向かい合う方向に回転駆動されているから、被掃除面の塵は両回転清掃体２３、２４の周囲に跳ね飛ばされることがなく、これら回転清掃体２３、２４により塵の送出方向を規制されながら両回転清掃体２３、２４間を通って上方へ勢いよく掻き上げられる。この掻き上げは、回転清掃体２３、２４の全長、言い換えれば、吸込み口体８の幅方向略全長にわたって行われる。
【００６３】
こうして被掃除面から掻き上げられた塵は、その勢いによって、２本の回転清掃体２３、２４の互いに向い合っている上部周面間スペースの真上に対向している連通口６１を、何ら妨げられることなく容易に通過して、この連通口６１上に対向している主部中ケース５３の斜めのガイド壁５３ａにあたって、この塵受け棚６２側に導かれる。しかも、塵移送室５８において塵受け棚６２上を主として流動する高速の風の影響、及び前記内管部３３ａでの空気の吸込みの影響によって、連通口６１を通って塵移送室５８に至った空気は前記高速の風に合流するように流動されている。
【００６４】
そのため、前記掻き上げによって連通口６１を通過した塵は、その真下に自由落下して清掃体収容室５７に戻ることがなく、この塵を連通口６１より後側の塵受け棚６２側に円滑に移動させて、この棚６２上に載せることができる。しかも、塵受け棚６２の先端縁６２ａは立ち上がっているので、塵受け棚６２上に一旦のせられた塵が、先端縁６２ａを越えて脱落することは抑制されるとともに、この立ち上がった先端縁６２ａにより塵受け棚６２を風の通り道となるように樋状にできるので、その上を流れる高速の風の流れを円滑に案内して、より高速の風を塵受け棚６２上に流させることができる。
【００６５】
こうして塵が清掃体収容室５７から供給される塵移送室５８には既述のように循環気流が高速で流動している。そのため、塵受け棚６２上の塵および塵移送室５８内を浮遊している塵を、高速空気流にのせて継手管２１まで移送して、その内管部３３ａに吸込ませることができる。
【００６６】
このように前後２本の回転清掃体２３、２４が掻き上げた塵を、清掃体収容室５７とは別の塵移送室５７を流れる高速の空気によって吸込み側に移送させるから、継手管２１に至る塵の空気移送において２本の回転清掃体２３、２４が風路抵抗となることがない。そのため、空気移送される塵が両回転清掃体２３、２４に引っ掛かることが殆どなく、掻き上げられた塵を円滑かつ確実に継手管２１の内管部３３ａに移送して吸込ませることができる。
【００６７】
したがって、吸込み力が波及しづらい吸込み口体８の幅方向の端部において掻き上げられた塵であっても、これを以上のように空気移送して継手管２１に吸込ませることができるので、塵取り性能を向上できる。
【００６８】
しかも、吸込み力は主として高速の空気を流す塵移送室５７に作用し、この室５７とは絞りとなっている連通口６１を介して連通されている下側の清掃体収容室５７への前記吸込み力の波及は弱い。そのため、被掃除面に臨んだ清掃体収容室５７の塵取り開口５７ａが被掃除面に吸付けられることも防止でき、吸込み口体８を軽く被掃除面上で動かすことができ、操作性がよい。
【００６９】
以上のように前記構成の吸込み口体８及びこれを備えた空気循環式電気掃除機を用いての掃除においては、前後一対の回転清掃体２３、２４が掻き上げた被清掃面の塵を、清掃体収容室５７上に位置した塵移送室５８に移し、電動送風機１１から排出されて実質的に完全循環しながら前記塵移送室５８を高速で流れる循環風を利用して、塵移送室５８内の塵を移送して吸込み風路に吸込ませることができ、しかも、吸込み口体８を被掃除面上に軽く移動させながら、この被掃除面を掃除することができる。
【００７０】
更に、既述のように循環風の一部を、清掃体収容室５７内に導入させた後に、連通口６１を通して塵移送室５８を流れる気流に合流させているので、回転清掃体２３、２４が被掃除面から掻き上げた塵を塵受け棚６２上に円滑に運び易く、塵取り性能をより向上できる点で優れている。
【００７１】
以上説明した掃除において、被掃除面に接して塵の掻き上げをする両回転清掃体２３、２４は、フローリング床の掃除に適する板状ブレード８４を有しているとともに、絨毯や畳みの掃除に適する毛ブラシ状ブレード８５を備えているので、各種の被掃除面に対する適合性が良い。
【００７２】
ところで、前記掃除中においては、掻き揚げられた塵の一部が両回転清掃体２３、２４の特に毛ブラシ状ブレード８５に多く付着するが、この塵は付着した傍から以下のように取除かれて、既述のように塵移送室５８を経由して掃除機本体１側に吸込まれる。
【００７３】
つまり、前後２本の回転清掃体２３、２４は、それらを軸線方向から見た時に、毛ブラシ状ブレード８５の回転軌跡Ｒ１と板状ブレード８４の回転軌跡Ｒ２とが互いにオーバーラップするように配置されているから、前後２本の回転清掃体２３、２４が回転駆動される時には、一方の回転清掃体の毛ブラシ状ブレード８５と他方の回転清掃体の板状ブレード８４の先端部とが接触する。
【００７４】
この接触は、塵の掻き出し等に伴う各ブレード８４、８５の可撓変形等の動的要因、毛ブラシ状ブレード８５の毛先側が根本側よりも広がっていること、並びに両回転清掃体２３、２４の相互位置関係等により可能である。特に、図４及び図５に示すように内内方向に回転駆動される回転清掃体２３、２４において、回転方向前側に先行する回転清掃体２３の毛ブラシ状ブレード８５に対し、このブレード８５を回転方向後側から後追いする回転清掃体２４の板状ブレード８４が近付けられている構成においては、なお更両ブレード８４、８５の接触が容易である。
【００７５】
このように各ブレード８４、８５を互いに接しながら両回転清掃体２３、２４が回転駆動されることにより、毛ブラシ状ブレード８５よりも腰がある板状ブレード８４の先端縁は、毛ブラシ状ブレード８５にこれを叩くように当るに引続いて毛ブラシ状ブレード８５を擦るようになる。そのため、掃除中に毛ブラシ状ブレード８５に付着している綿状の塵等の付着物は、板状ブレード８４によって取除かれる。そして、こうして除かれた塵は、遠心力によって塵移送室５８内に送出された後、この室５８内での既述の空気移送により継手管２１に吸込まれる。
【００７６】
以上のように掃除に伴い毛ブラシ状ブレード８５付着した塵を板状ブレード８４によって掃除中に自動的に取除くので、毛ブラシ状ブレード８５を有する回転清掃体２３、２４に対する塵の付着量を少なくできる。したがって、これら回転清掃体２３、２４に付着した綿状の塵を定期的する除去する手間を軽減できる。
【００７７】
しかも、両回転清掃体２３、２４が回転駆動される時に、それらの板状ブレード８４の先端同士は、接することがなく、或は接触するとしても軽微に接するので、これら板状ブレード８４同士が無理矢理撓むようなことが防止される。そのため、前後両回転清掃体２３、２４の回転が円滑となり、かつ、これらを回転駆動する清掃体駆動装置２５に対する負荷を軽減できる。
【００７８】
なお、本発明は前記第１実施形態において両回転清掃体２３、２４の回転速度を互いに異ならせて実施してもよい。この場合、例えば清掃体駆動装置２５が有する一対の最終歯車の歯数を変えることにより、両回転清掃体２３、２４の回転速度を互いに異ならせることができるとともに、前側の回転清掃体２３が後側の回転清掃体２４より速くても、この逆に遅くてもよい。
【００７９】
このようにして実施する場合には、前後２本の回転清掃体２３、２４の相対的回転速度差により、互いにオーバーラップしている毛ブラシ状ブレード８５と板状ブレード８４とが接する機会を多く確保できる。したがって、毛ブラシ状ブレード８５に付着した塵を、板状ブレード８４によって掃除中により効果的に取除くことができる。
【００８０】
図１１〜図１３は本発明の第２実施形態を示している。この実施形態は非空気循環式電気掃除機Ｅ及びそれ用の吸込み口体１１１に本発明を適用した例を示している。
【００８１】
図１１中１１２は図示しない車輪により被掃除面上を移動可能な掃除機本体で、その前部に設けられた吸塵口１１３には、図示しない可撓性の吸塵ホースと非可撓性の吸塵パイプとを有する吸塵用連通管の一端部が取外し可能に嵌合して接続され、この連結管の他端部には吸込み口体１１１が取外し可能に嵌合して接続されている。吸塵用連通管には吸込み空気流のみが通されるようになっている。掃除機本体１１２の前部の集塵室には、集塵袋（フィルタ）１１４が出し入れ可能に収容されているとともに、掃除機本体１１２の後部の送風機室には電動送風機１１５等が収容されている。電動送風機１１５から排出された空気は、掃除機本体１１２の後部に設けた排気部１１６を通って外部に放出されるように構成されている。
【００８２】
吸込み口体１１１は、吸込み口体主部１２１、前後一対の回転清掃体１２３及び１２４、継手管１２５、及び清掃体駆動装置１２６等を備えている。
【００８３】
吸込み口体主部１２１は、主部上ケース１２８と主部下ケース１２９とを連結して形成されている。主部下ケース１２９の前部は清掃体収容室１３１をなしており、この収容室１３１は被掃除面に臨む塵取り開口１３１ａを有している。更に、図１１及び図１３に示すように主部下ケース１２９の天井壁には、上向きのリブからなる互いに略平行な前後一対の仕切り壁１３２、１３３が一体に突設されているとともに、これら両壁１３２、１３３間に連通口１３５を設けている。
【００８４】
主部上ケース１２９は仕切り壁１３２、１３３の上端間を閉じて設けられており、これら主部上ケース１２９と前後の仕切り壁１３２、１３３とで囲まれる空間によって、清掃体収容室１３１の上側にこの室１３１と連通口１３５を介して連通された塵移送室１３６が形成されている。この塵移送室１３６の風路断面積は清掃体収容室１３１の風路断面積よりも小さい。又、前記天井壁の一部は後側の仕切り壁１３３側に位置されていて塵移送室１３６と清掃体収容室１３１との間を仕切っており、この壁部分は塵受け棚１３９として使用されている。
【００８５】
塵移送室１３６及び塵受け棚１３９は吸込み口体主部１２１の幅方向略全長延びて設けられている。塵移送室１３６の長手方向の少なくとも一端部例えば両端部に夫々空気導入口１３７（図１２参照）が設けられている。これら導入口１３７は、吸込み口体１１１の外部に直接連通するように例えば主部上ケース１２９の両端部上面に開放されて、外気を吸込み可能としてある。
【００８６】
前後一対の仕切り壁１３２、１３３の内、例えば後側の仕切り壁１３３には、塵移送室１３６の長手方向に沿って空気導入口１３７から離れた位置、好ましくは塵移送室１３６の長手方向略中央部に位置して吸気開口１３８が設けられている。吸込み口体主部１２１の幅方向中央部には、継手管１２５の前端部が上下のケース１２８、１２９の後部で挟持されて取付けられ、この継手管１２５と前記吸気開口１３８とは連通されている。前記吸塵用連通管の先端部に接続される継手管１２５は、その内部を吸込み空気が主に流通可能に構成されている。
【００８７】
したがって、電動送風機１１５が運転されるに伴って生じる吸込み力は、吸塵用連通管、継手管１２５及び吸気開口１３８を介して塵移送室１３６に波及し、更に、塵受棚１３９で絞られている連通口１３５を介して塵移送室１３６から清掃体収容室１３１に波及する。
【００８８】
そのため、空気導入口１３７から塵移送室１３６に吸込まれる外気が塵移送室１３６内を高速度で流通して吸気開口１３８を通って継手管１２５に吸込まれる。同時に、前記外気導入に応じて清掃体収容室１３１に波及する吸込み圧力が減少した状態で、この収容室１３１内の空気が連通口１３５を通って塵移送室１３６内に吸込まれ、そして、この空気は塵移送室１３６内の高速空気流と合流して、吸気開口１３８を通って継手管１２５に吸込まれる。
【００８９】
図１１に示すように清掃体収容室１３１にこれを略満たすように収容された前後２本の回転清掃体１２３、１２４の一端部は軸受１４１に支承されており、かつ、他端部には互いに噛合う歯車１４２、１４３に個別に支持されている。同一径で同一歯数の歯車１４２、１４３は清掃体駆動装置１２６の最終歯車をなすものであって、その同期回転により前後２本の回転清掃体１２３、１２４を、塵取り開口１３１ａにおいて互いに向かい合うように図１１中矢印イ、ロ方向に回転駆動させる。
【００９０】
吸込み口体主部１２１に内蔵された清掃体駆動装置１２６は、電動モータ１４５と、巻掛け伝動機構１４６と、前記最終歯車１４２、１４３とを備えている。巻掛け伝動機構１４６は、電動モータ１４５に連結された駆動用歯付きプーリ１４７と、後側の最終歯車１４３に同軸に連結された被動用歯付きプーリ１４８と、これらプーリ１４７及び１４８にわたって巻掛けられたタイミングベルト１４９とにより形成されている。したがって、電動モータ１４５の動力によって前後２本の回転清掃体１２３、１２４を内内方向に回転駆動させて、その清掃要素としてのブレードにより被掃除面の塵を、回転清掃体１２３、１２４間を通るように掻き上げることができる。
【００９１】
そして、清掃体収容室１３１に収容された回転清掃体１２３、１２４は、いずれも清掃体軸１５３の外周に、夫々２枚づつの第１、第２の清掃要素を螺旋状に捻じれるように巻付けて形成されている。第１の清掃要素には軟質合成樹脂により成形されたゴム板状ブレード１５４が使用されており、第２の清掃要素にはブラシ毛を一列に連続するように並べてなる毛ブラシ状ブレード１５５が使用されている。板状ブレード１５４は、毛ブラシ状ブレード１５５よりも腰があって変形しずらく、かつ、毛ブラシ状ブレード１５５よりも清掃体軸１５３からの放射方向への出幅は短い。なお、板状ブレード１５４には起毛布を用いることもできる。
【００９２】
両回転清掃体１２３、１２４は好ましくは同径であり、それらの直径は、最も出幅が長い毛ブラシ状ブレード１５５の回転軌跡Ｒ１によって規定される。図１１中符号Ｒ２は板状ブレード１５４の回転軌跡を示している。図１１に示されるように回転清掃体１２３、１２４は、それらを軸方向から見たときに、両回転清掃体１２３、１２４が有する板状ブレード１５４の回転軌跡Ｒ２が軽微に接するとともに、毛ブラシ状ブレード１５５の回転軌跡Ｒ１が互いに前後方向にオーバーラップする状態にして、清掃体収容室１３１に収容される。図１１中Ｒ３は前記オーバーラップの寸法を示している。以上のようにオーバーラップされた状態で両回転清掃体１２３、１２４は、それらが同期して回転されるときには、板状ブレード１５４の先端部が毛ブラシ状ブレード１５５に当ることができる関係位置に配置されている。又、前記収容状態において、両回転清掃体１２３、１２４のブレード１５４、１５５の先端部は、塵取り開口１３１ａを通過して被掃除面に接するようになっている。
【００９３】
この第２実施形態においても、回転清掃体１２３、１２４の板状ブレード１５４の回転軌跡Ｒ２と毛ブラシ状ブレード１５５の回転軌跡Ｒ１とがオーバーラップしており、これらブレード１５４、１５５を互いに当てながら両回転清掃体１２３、１２４を清掃体駆動装置１２６により回転駆動させることができる。そのため、掃除中に毛ブラシ状ブレード１５５に付着した塵を板状ブレード１５４で次々に取除いて、毛ブラシ状ブレード１５５を有する回転清掃体１２３、１２４に対する塵の付着量を少なくできる。したがって、回転清掃体１２３、１２４を定期的に掃除する手間を軽減できる。
【００９４】
又、清掃体駆動装置１２６の運転に伴い、回転駆動される前後２本の回転清掃体１２３、１２４により被掃除面から掻き上げられた塵は、清掃体収容室１３１とは別にこの上側に形成された塵移送室１３６に至り、その内の一部は塵受け棚１３９上に自由落下する。そして、こうして塵が清掃体収容室１３１から供給される塵移送室１３６には、被掃除面以外の方向から空気導入口１３７を通して外気が吸込まれて高速で流動しているため、この高速の吸込み空気流にのせて塵受け棚１３９上に乗っている塵及び塵移送室１３６に浮遊している塵を、吸気用継手管１２５まで移送して、この管１２５に吸込ませることができる。
【００９５】
このように掻き上げられた塵を塵移送室１３６を流れる高速の空気によって吸込み側に移送させるから、こうした塵の空気移送において２本の回転清掃体１２３、１２４が風路抵抗となることがない。そのため、空気移送される塵が両回転清掃体１２３、１２４と干渉して引っ掛かることが殆どなく、掻き上げられた塵を円滑かつ確実に継手管１２５に移送して吸込ませることができる。したがって、吸込み力が波及しづらい吸込み口体１１１の幅方向の端部において掻き上げられた塵であっても、これを以上のように空気移送して吸込ませることができるので、塵取り性能を向上できる。
【００９６】
しかも、以上のように外気を吸込むに伴って、継手管１２５から絞りとなっている連通口１３５を介して連通されている下側の清掃体収容室１３１に作用する吸込み力は大きく低下する。そのため、非空気循環式の掃除であるにも拘らず、被掃除面に臨んだ清掃体収容室１３１の塵取り開口１３１ａが被掃除面に強く吸付けられることも防止できる。よって、吸込み口体１１１を軽く被掃除面上で動かすことができ、操作性がよい。
【００９７】
又、回転清掃体１２３、１２４の板状ブレード１５４の回転軌跡Ｒ２と毛ブラシ状ブレード１５５の回転軌跡Ｒ１とがオーバーラップしていて、これらブレード１５４、１５５を互いに当てながら両回転清掃体１２３、１２４を回転駆動させるから、掃除中に毛ブラシ状ブレード１５５に付着した塵を板状ブレード１５４で次々に取除いて、本発明の課題を解決できる。
【００９８】
なお、本発明において、２本の回転清掃体を回転させる手段としては、前記各実施形態に例示したものの他、吸込み気流又は循環される気流の一部又は全部が吹き当てられることにより回転されるタービンを用いて、２本の回転清掃体を回転させることもでき、又、２本の回転清掃体の内の少なくとも一方に、吸込み気流又は循環される気流の一部又は全部を吹き当てることで、これら２本の回転清掃体を回転させることもできる。又、清掃体駆動装置を用いる場合に、その伝動機構には、歯車列、又はタイミングベルトを用いた巻掛け伝動部、或は、これらの組合わせによって形成される伝動機構等を用いることができる。
【００９９】
【発明の効果】
本発明は、以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【０１００】
請求項１の発明によれば、２本の回転清掃体が掻き上げた塵を、清掃体収容室とは別の塵移送室を流れる空気によって吸込み側に移送させるから、吸込み力が波及しづらい吸込み口体の幅方向の端部において掻き上げられた塵であっても、これを空気移送して継手管に吸込ませることができ、したがって、塵取り性能を向上できる。しかも、前後２本の回転清掃体の内の少なくとも一方の回転清掃体が有する毛ブラシ状ブレードに付着している塵を、他方の回転清掃体が有する板状ブレードによって掃除中に自動的に取除くことができるので、毛ブラシ状ブレードを有する回転清掃体に対する塵の付着量が少なくなり、この回転清掃体を定期的に掃除する手間を軽減できる吸込み口体を提供できる。
【０１０１】
請求項２の発明によれば、被掃除面から掻き上げた塵の送り出し位置を定め易い吸込み口体を提供できる。
【０１０２】
請求項３の発明によれば、掃除中に、毛ブラシ状ブレードに付着している塵を板状ブレードによって取除くことができるだけではなく、板状ブレード同士が無理矢理撓むことが防止されるので、回転清掃体を円滑に回転させることができる。
【０１０３】
請求項４の発明によれば、互いにオーバーラップしている毛ブラシ状ブレードと板状ブレードとが接する機会を多く確保して、板状ブレードによる毛ブラシ状ブレードに対する掃除性をより向上できる。
【０１０４】
請求項５の発明によれば、毛ブラシ状ブレードに付着している塵を掃除中に板状ブレードによって取除くことができる吸込み口体を備えるから、掃除中に塵が付着する回転清掃体に対する掃除の手間を軽減できる非空気循環式の電気掃除機を提供できる。
【０１０５】
請求項６の発明によれば、毛ブラシ状ブレードに付着している塵を掃除中に板状ブレードによって取除くことができる吸込み口体を備えるから、掃除中に塵が付着する回転清掃体に対する掃除の手間を軽減できる空気循環式の電気掃除機を提供できる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る空気循環式電気掃除機を示す斜視図。
【図２】図１の電気掃除機が備える吸込み口体を示す斜視図。
【図３】図２の吸込み口体を示す縦断側面図。
【図４】図２の吸込み口体の幅方向中央部と一端部との間の部分を拡大して示す縦断側面図。
【図５】図２の吸込み口体の幅方向一端部を示す縦断側面図。
【図６】図２の吸込み口体を反転させた状態でその一端部を示す斜視図。
【図７】図２の吸込み口体をその主部上カバーを取外した状態で示す概略平面図。
【図８】図２の吸込み口体をその主部上カバーと主部中カバーとを取外した状態で一部を断面して示す概略平面図。
【図９】図２の吸込み口体を示す下面図。
【図１０】図２の吸込み口体が備える回転清掃体を示す平面図。
【図１１】本発明の第２実施形態に係る非空気循環式電気掃除機の吸込み口体を示す概略断面図。
【図１２】図１１の吸込み口体を示す平面図。
【図１３】図１１の吸込み口体をその主部上カバーを取外した状態で一部を切り欠いて示す概略平面図。
【符号の説明】
Ａ…空気循環式電気掃除機、１…掃除機本体、８…吸込み口体、９…集塵袋（フィルタ）、１１…電動送風機、２１…継手管、２２…吸込み口体主部、２３…前側の回転清掃体、２４…後側の回転清掃体、２５…清掃体駆動装置、５７…清掃体収容室、５７ａ…塵取り開口、５８…塵移送室、６１…連通口、６６，６８…通気部、８１…清掃体軸、８４…板状ブレード（第１の清掃要素）、８５…毛ブラシ状ブレード（第２の清掃要素）、Ｒ１…毛ブラシ状ブレードの回転軌跡、Ｒ２…板状ブレードの回転軌跡、Ｒ３…板状ブレードと毛ブラシ状ブレードのオーバーラップ寸法、Ｅ…非空気循環式電気掃除機、１１１…吸込み口体、１１２…掃除機本体、１１４…集塵袋（フィルタ）、１１５…電動送風機、１２１…吸込み口体主部、１２３…前側の回転清掃体、１２４…後側の回転清掃体、１２５…継手管、１２６…清掃体駆動装置、１３１…清掃体収容室、１３１ａ…塵取り開口、１３５…連通口、１３６…塵移送室、１３７…空気導入口（通気部）、１４２、１４３…清掃体駆動装置の最終歯車、１５３…清掃体軸、１５４…板状ブレード（第１の清掃要素）、１５５…毛ブラシ状ブレード（第２の清掃要素）[0001]
BACKGROUND OF THE INVENTION
The present invention is an air circulation type in which the air discharged from the electric blower in the cleaner body is returned to the suction port body and cleaned while being circulated through the suction port body and the cleaner body, or such The present invention relates to a non-air circulation type electric vacuum cleaner that performs cleaning while exerting a suction force on a surface to be cleaned without air circulation, and also relates to a suction port used for these vacuum cleaners.
[0002]
[Prior art]
In the suction port body of the non-air circulation type vacuum cleaner, two rotating brushes having different rotation directions and rotation speeds are arranged in parallel to the floor surface, and both brushes are overlaid in the front-rear direction of the suction port body. By lapping, the dust on the floor surface can be effectively scraped and knocked out to Collectability Has been proposed (see Japanese Patent Application Laid-Open No. 5-111449).
[0003]
The two front and rear rotary brushes provided in the suction port body have a configuration in which a plurality of blades are twisted and attached to the outer periphery of the rotary rod (cleaning body shaft). As a result, the blades do not interfere with each other during rotation even though the rotation trajectories of the blades overlap, and the blades are effectively scraped and knocked out of the surface to be cleaned. .
[0004]
By the way, it is inevitable that cotton-like dust adheres to the rotating brush as it is cleaned. If the adhesion is left unattended, the cotton-like dust grows in a string shape and winds around the outer periphery of the rotating brush. It is known. Even in the suction port described in the above publication, it is no exception that cotton-like dust adheres to the rotating brush, and the publication discloses that the amount of dust attached to the blade of the rotating brush is reduced. No special measures are taken. For this reason, the suction port described in the above publication requires time and effort to frequently clean the rotating brush itself.
[0005]
In the suction port described in the publication, the material of the blade of the rotating brush is not mentioned, but for example, a so-called bristle-blade blade, which is formed by continuously connecting brush hairs in a row, for example, It is suitable for cleaning carpets and tatami mats, and a plate blade made of a molded product made of soft synthetic resin is suitable for cleaning flooring floors. Therefore, it is preferable that the rotating brush of the suction port body includes a bristle brush-like blade and a plate-like blade in terms of good compatibility with cleaning of various surfaces to be cleaned. Such a configuration is known in the art for suction ports with a single rotating brush.
[0006]
However, bristle brush-like blades are formed in a state where the tip edge is broken at the tip of many brush hairs Has been Therefore, cotton-like dust is easily attached as compared with the plate-like blade. Nevertheless, the conventional suction mouth with a rotating brush having both types of blades does not take any special measures to remove the attached cotton-like dust. It often takes time to clean the rotating brush itself.
[0007]
[Problems to be solved by the invention]
The problem to be solved by the present invention is: While improving dust removal performance An object of the present invention is to obtain a suction port body and a vacuum cleaner that can reduce the time and effort of cleaning a rotating cleaning body to which dust adheres during cleaning.
[0008]
[Means for Solving the Problems]
The present invention A cleaning body storage chamber having a dust removal opening facing the surface to be cleaned is provided in the main portion of the suction port, and two cleaning cleaning bodies that rotate in directions facing each other in the dust removal opening are accommodated side by side in the cleaning body storage chamber. A suction port body that sucks dust that has been scraped up from the surface to be cleaned with the rotation of the two rotary cleaning bodies and passed between the two rotary cleaning bodies into a joint pipe attached to the main portion of the suction port body. Assuming
[0009]
And in order to solve the said subject, invention of Claim 1 is the following. The cleaning body storage chamber is formed to have a size so as to cover the two rotary cleaning bodies and be filled with the two rotary cleaning bodies, and the main portion of the suction port is the cleaning body. A dust transfer chamber that extends in the same direction as the storage chamber extends and is provided above the cleaning body storage chamber, and the dust that is scraped up and provided on the cleaning body storage chamber through the two chambers. And a ventilation part that is provided at an end in the longitudinal direction of the dust transfer chamber and introduces air outside the cleaning body storage chamber to the dust transfer chamber without circulating the cleaning body storage chamber. Each of the joint pipes is attached to the main portion of the suction port body in communication with the dust transfer chamber at a position away from the ventilation portion so as to suck the airflow flowing in the longitudinal direction in the dust transfer chamber, At least one of the rotary cleaning bodies includes a cleaning element made up of one or more bristle brush blades, and the other rotary cleaning body consists of one or more plate blades. Cleaning element The bristle brush blade and the plate blade rotate so as to contact each other. Of the cleaning element when viewed from the axial direction. It is characterized by overlapping rotation trajectories.
[0010]
The invention of claim 1 can be applied to a suction port for an air-circulating or non-air-circulating electric vacuum cleaner. In the first aspect of the present invention, the rotary cleaning body has a blade of soft synthetic resin plate blade or brushed cloth blade or brush bristles as a cleaning element on the peripheral surface of the cleaning body shaft. A rotating cleaning body can be used in which bristle-brush blades formed in series are attached so as to protrude radially from the cleaning body axis, and each blade is attached to extend in parallel with the cleaning body axis. Or may be attached so as to be wound spirally around the cleaning body shaft, and a plurality of rows may be provided at intervals in the circumferential direction of the cleaning body shaft. In addition, the blade included in one of the rotary cleaning bodies may be a bristle brush-like blade. In this case, the blade provided in the other rotary cleaning body includes at least a plate-like blade. In addition, a rotary cleaning body in which different types of blades are alternately provided may be used as at least one of the rotary cleaning bodies.
[0011]
In the invention of claim 1, Since the dust swept up by the two rotary cleaning bodies is transferred to the suction side by the air flowing in a dust transfer chamber different from the cleaning body accommodation chamber, the end of the suction port body in the width direction where the suction force is difficult to spread Even if the dust is scraped up in step 1, it can be transferred to the air and sucked into the joint pipe, so that the dust removal performance can be improved. Furthermore, in the invention of claim 1, Since it has a cleaning member formed of a bristle brush blade and a plate blade, it can scrape dust with a bristle brush blade and dust with a plate blade against the surface to be cleaned. Good suitability for cleaning various surfaces to be cleaned. The two front and rear rotary cleaning bodies are driven to rotate while bringing the bristle brush blade provided on at least one of them into contact with the plate blade provided on the other, so that the bristle brush blade The plate-like blade having a lower waist becomes rubbed against the bristle brush blade as it strikes the bristle brush blade. Accordingly, the dust attached to the bristle brush blade during cleaning can be removed by the plate blade.
[0012]
The invention according to claim 2 is characterized in that the double-rotating cleaning body according to claim 1 is rotated in a direction facing each other in the dust opening.
[0013]
In this invention, the dust which two rotary cleaning bodies scoop up from a to-be-cleaned surface can be sent out upwards between these rotary cleaning bodies, and it is easy to determine the sending-out position of the dust swept up.
[0014]
According to a third aspect of the present invention, each of the rotary cleaning bodies according to the first or second aspect includes a first cleaning element comprising a bristle brush-like blade and a plate-like blade having a shorter output width than the first cleaning element. Each of the rotary cleaning bodies is viewed from the axial direction, and the rotation paths of the first cleaning element and the second cleaning element of the rotary cleaning bodies are overlapped with each other. The rotation trajectory of the second cleaning element of the rotary cleaning body is slightly in contact with or close to it.
[0015]
In this invention, due to the mutual relationship between the bristle brush blade and the plate blade that overlap each other, not only the dust attached to the bristle brush blade can be removed by the plate blade during cleaning. The plate blades of the front and rear rotary cleaning bodies that have lower back than the bristle brush blades do not touch each other, or even if they come into contact with each other, they touch slightly, so that these plate blades may be bent forcibly. Is prevented.
[0016]
The invention of claim 4 is characterized in that the rotational speeds of the rotary cleaning bodies according to any one of claims 1 to 3 are different from each other.
[0017]
In the present invention, due to the relative rotational speed difference between the two front and rear rotary cleaning bodies, a large number of opportunities for contact between the overlapping brush blade and the plate blade can be ensured.
[0018]
According to the fifth aspect of the present invention, the operation of the electric blower in the vacuum cleaner main body sucks dust on the surface to be cleaned together with air from the dust opening of the suction port body communicated with the dust collecting chamber of the vacuum cleaner main body. In the vacuum cleaner which captures the sucked dust through a filter in the dust collection chamber, the suction port body according to any one of claims 1 to 4 is used as the suction port body. Yes.
[0019]
In the invention of claim 5, the rotary cleaning body to which dust is attached during cleaning is provided with a suction port body that can remove dust attached to the bristle brush blade by the plate-like blade during cleaning. Therefore, it is possible to provide a non-air circulation type electric vacuum cleaner that can reduce the time and effort for cleaning.
[0020]
According to a sixth aspect of the present invention, the dust on the surface to be cleaned is taken from the dust collecting opening of the suction port connected to the dust collecting chamber of the main body of the vacuum cleaner incorporating the electric blower. The air is trapped through an indoor filter, passed through the filter and discharged from the electric blower to the suction port body, and the exhaust air is circulated between the cleaner body and the suction port body for cleaning. In the vacuum cleaner which performs, the suction inlet body as described in any one of Claims 1-4 was used for the said suction inlet body.
[0021]
According to the sixth aspect of the present invention, the air circulation type vacuum cleaner can be provided because the suction port body that can remove dust adhering to the bristle brush blade by the plate blade during cleaning is provided. .
[0022]
DETAILED DESCRIPTION OF THE INVENTION
The first embodiment of the present invention will be described below with reference to FIGS.
[0023]
FIG. 1 is a perspective view showing the entire air circulation type electric vacuum cleaner A. In FIG. 1, reference numeral 1 denotes a cleaning that can freely move on a surface to be cleaned by a pair of wheels 2 (only one is shown) and a swirling wheel (not shown). It is the machine body. The vacuum cleaner main body 1 has one end of a dust-collecting communication pipe 6 having a flexible dust-absorbing hose 4 and an inflexible dust-absorbing pipe 5 in a dust-collecting port 3 provided at the front thereof, that is, the dust-absorbing hose 4. A connecting cylinder 7 provided in the pipe is detachably fitted and connected, and a suction port body 8 to be described later is connected to the other end of the communication pipe 6, that is, the dust pipe 5. Air discharged from an electric blower described later is guided to the dust suction port 3 so as not to be mixed with dust suction air.
[0024]
A dust collection chamber having an upper opening is formed in the front portion of the cleaner body 1 configured by combining a plurality of synthetic resin case members, and a blower chamber is formed in the rear portion. A dust collection bag 9 as a filter is accommodated in the dust collection chamber so that it can be put in and out through the upper surface opening. The upper surface opening of the dust collection chamber is hermetically closed by a case lid 10 that can be opened and closed. An electric blower chamber, a cord reel (not shown), and the like are accommodated in a blower chamber in which the wheels 2 are rotatably attached to both sides. The air (exhaust gas) discharged from the electric blower 11 is configured to be guided to the dust suction port 3 through a return air passage member (not shown) arranged around one side of the dust collection chamber. In FIG. 1, reference numeral 13 denotes an insertion plug connected to the tip of a power cord wound on a cord reel.
[0025]
The dust suction hose 4 is a double pipe having a coaxial structure, for example, and is passed through a ventilation path formed in an inner space of the bellows-like inner pipe along with air circulating dust taken in by a suction port body 8 to be described later. The exhaust air led from the return air passage member is passed through the dust suction port 3 through an annular air passage formed between the inner tube and the bellows-like outer tube. The tip of the dust suction hose 4 is provided with a connecting tube 16 which is formed in a square shape and has a handle 15 protruding upward. The handle 15 starts various operations for the electric blower 11 and the like. A control switch 17 for hand operation for instructing the cancellation is provided.
[0026]
The two-piece jointed dust suction pipe 5 detachably connected to the connection cylinder 16 is made of a synthetic resin hard pipe, and is used to return the first pipe 5 a for sucking dust and the exhaust into the suction port body 8. Second pipe 5b. The first pipe 5a is communicated with the inner pipe of the dust suction hose 4 via the connection cylinder 16, and similarly the second pipe 5b is communicated with the annular air passage between the inner and outer pipes of the dust suction hose 4 via the connection cylinder 16. .
[0027]
Next, the suction port body 8 connected to the tip of the dust suction pipe 5 will be described with reference to FIGS. The suction port body 8 includes a synthetic resin joint pipe 21 as a connecting portion communicating with the cleaner body 1 side, a synthetic resin suction port main portion 22, and two front and rear rotary cleaning bodies 23 and 24. And the cleaning body drive device 25 is provided.
[0028]
The joint pipe 21 communicated with the dust suction port 3 of the cleaner body 1 by being detachably fitted to the tip of the dust suction pipe 5 is connected to the suction port body as shown in FIGS. 3, 7, and 8. A fixed portion 31 to the main portion 22 and a movable portion 32 rotatably connected to the fixed portion 31 are provided.
[0029]
The fixed portion 31 includes a fixed base tube 33 and a rotation tube 34 that can rotate along the axis of the base tube 33. The fixed part 31 is sandwiched from above and below by a main lower case and a main upper case, which will be described later, of the suction port main part 22 with the front end of the fixed base pipe 33 in a posture in which the axis line is along the front-rear direction. The suction port body main part 22 is fixed to the rear side and to the center part in the width direction of the main part 22.
[0030]
The fixed base tube 33 is formed by integrating the inner tube portion 33a with both front and rear ends opened, the outer tube portion 33b with the rear end opened, and both the tube portions 33a and 33b so as to close the front end of the outer tube portion 33b. And a front wall 33c connected to each other. The inner tube portion 33a is longer than the outer tube portion 33b. The front end portion of the inner pipe portion 33a protrudes forward through the front wall 33c and forms a suction inlet. The inner pipe portion 33a forms part of the suction air passage, and a passage 35 that forms part of the return air passage is formed between the inner and outer pipe portions 33a and 33b. One or more vent holes 36 (see FIG. 8) are opened in the front wall 33c.
[0031]
The front portion of the rotating tube 34 has a double tube structure. The front part is fitted to the outer circumferences of the inner and outer pipe parts 33a and 33b so as to be rotatable along their peripheral surfaces, and the rotary pipe 34 is attached to the fixed part 31 from the rear side. The rotating tube 34 has a recessed groove 37 opened from the rear surface to the upper surface at the rear portion thereof. A passage 38 (see FIG. 8) forming a part of the return air passage is formed in the rotating tube 34 so as to communicate with the passage 35.
[0032]
As shown in FIGS. 3 and 8, the movable portion 32 is communicated with a first pipe 41 communicated with the inner tube portion 33 a for sucking dust and a passage 38 for returning exhaust gas into the suction port main portion 22. And a second pipe 42. The first pipe 41 is detachably fitted to and connected to the first pipe 5 a of the dust suction pipe 5, and the connection portion 42 a at the rear end of the second pipe 42 is detachable to the second pipe 5 b of the dust suction pipe 5. Mated and connected.
[0033]
The front end portion of the movable portion 32 is housed in the recessed groove 37 and connected to the rear portion of the rotating tube 34. As shown in FIG. 8, this connection is such that a connecting cylinder portion 43 integrally projecting in opposite directions on both sides of the second pipe 42 can be rotated in a mounting hole 39 opened in the rear portion of the rotating tube 34. It is done by fitting. By this connection, the second pipe 42 and the passage 38 are communicated with each other via the connection cylinder portion 43, and the movable portion 32 has the dent over a range of approximately 90 ° centering on the attachment hole 39 and the connection cylinder portion 43. Attached so as to be movable along the groove 37.
[0034]
2, 45 indicates one of a pair of terminal pins for supplying electric power to the cleaning body drive device 25. These pins 45 absorb dust when the joint pipe 21 is connected to the dust suction pipe 5. It is connected to a terminal contact piece (not shown) provided at the tip of the pipe 5. As a result, the control switch 17 disconnects the cleaning body driving device 25 from the terminal pin 45 to the cleaning body driving device 25 through the electrical wiring 46 (see FIG. 3) and the electrical wiring (not shown) in the dust suction pipe 5. Electricity is made.
[0035]
As shown in FIGS. 3 to 5, the suction port main part 22 is formed to include a main part upper case 51, a main part lower case 52, and a main part middle case 53 sandwiched therebetween. The upper and lower cases 51, 52 of the main part are connected by screwing. The main part upper case 51 has a plurality of ribs on the back surface thereof, and is attached to the main part lower case 52 with these ribs pressing the main part middle case 53 from above. A plurality of running rollers 54 (see FIG. 9) are attached to the bottom wall of the main lower case 52. A circulation air blowing chamber 56, a cleaning body accommodation chamber 57, and a dust transfer chamber 58 are provided in the suction port body main portion 22.
[0036]
The circulation air blowing chamber 56 is formed in the internal space of the suction port main body 22 partitioned by the main upper and lower cases 51, 52 and the main middle case 53, and its front portion is above the dust transfer chamber 58. It is provided to cover.
[0037]
In the cleaning body storage chamber 57, the two rotary cleaning bodies 23, 24 are accommodated in parallel. The cleaning body accommodation chamber 57 has a dust removal opening 57a that opens to the bottom wall of the main lower case 52 and faces a surface to be cleaned such as a floor. The cleaning body accommodation chamber 57 is formed in a size that is substantially filled with the two rotary cleaning bodies 23 and 24 accommodated therein. For this reason, the inner surface of the storage chamber 57 does not form a relatively large gap between the rotation locus R1 of the two rotary cleaning bodies 23 and 24 arranged side by side (see the alternate long and short dash line in FIGS. 4 and 5). The rotary cleaning bodies 23 and 24 are provided so as to be close to each other so as to cover the front and rear and the upper side.
[0038]
3 to 6, reference numeral 59 denotes one or more suction holes provided obliquely through the front wall of the main lower case 52, and the rear end thereof is opened to the cleaning body accommodation chamber 57. The suction holes 59 are provided to suck dust at the corners of the wall when the front edge of the suction port 8 is pressed against the wall.
[0039]
The main middle case 53 is mounted on the front upper surface of the lower main case 52 so as to cover the ribs 52a to 52d that are substantially rectangular and continuous with each other from above. Is formed. The dust transfer chamber 58 provided on the upper side of the cleaning body accommodation chamber 57 and having substantially the same length as the accommodation room 57 has the same direction as the direction in which the cleaning body accommodation room 57 extends, that is, the cleaning body accommodation room 57. Similarly, the suction port body 8 extends in the width direction and communicates with the cleaning body accommodation chamber 57 through the communication port 61. The cross-sectional area of the dust transfer chamber 58 that appears when the suction port body 8 is cross-sectioned in the front-rear direction is smaller than the cross-sectional area of the similar cleaning body accommodation chamber 57. Thereby, the flow velocity of the air flowing through the dust transfer chamber 58 along the width direction of the suction port body 8 is also made faster than the flow velocity of the air flowing through the cleaning body accommodation chamber 57 along the width direction of the suction port body 8. Is set to
[0040]
The communication port 61 is also provided with substantially the same length as the cleaning body accommodation chamber 57 and extending in the width direction of the suction port body 8. The communication port 61 is partly partitioned between the cleaning body accommodation chamber 57 and the dust transfer chamber 58, and is provided in the front-rear direction of the suction port body 8 by a dust receiving shelf 62 provided as a rear bottom wall of the dust transfer chamber 58. It is narrowed down to. The communication port 61 faces the cleaning bodies 23, 24 directly above the pair of front and rear rotary cleaning bodies 23, 24. Therefore, the communication port 61 is opposed to the overlap portion of the rotary cleaning bodies 23 and 24. The facing wall portion of the main middle case 53 facing above the communication port 61 forms a guide wall 53a that is inclined so as to cover the communication port 61 as it goes upward. Therefore, the guide wall 53a is closer to the dust receiving shelf 62 as it goes upward.
[0041]
The dust receiving shelf 62 is provided so as to cover the rear rotary cleaning body 24 from above. The shelf 62 is inclined so as to gradually lower as it approaches the inner pipe portion 33a of the joint pipe 21. Therefore, in the present embodiment, the shelf 62 is inclined in a reverse C shape. This makes it easier to suck air containing dust into the inner pipe portion 33a.
[0042]
The front end edge 62a of the dust receiving shelf 62 is raised upward. The height of the upper end of the leading edge 62a is higher than the root of the dust receiving shelf 62, and the upper surface of the dust receiving shelf 62 is formed in a concave groove shape (saddle shape).
[0043]
A portion facing the fixed base tube 33 in the joint pipe 21 of the main case middle case 53, in this embodiment, a central portion in the longitudinal direction of the main case middle case 53 has a widening portion 53 b spreading upward and rearward. . The rear edge of the widened portion 53 b covers the front edge of the inner tube portion 33 a in the fixed base tube 33. Therefore, the intake inner pipe portion 33a and the dust transfer chamber 58 are communicated with each other via the widened portion 53b, and the intake inner pipe portion 33a and the cleaning body are communicated with each other via the dust transfer chamber 58 and the communication port 61. The middle portion in the longitudinal direction of the storage chamber 57 is in communication. In addition, as shown in FIGS. 3 and 7, the tip edge 62 a side portion of the dust receiving shelf 62 corresponding to the communication portion between the joint pipe 21 and the cleaning body accommodation chamber 57 is cut away. By the notch 63, the communication port 61 is enlarged to the rear side so as to partially approach the joint pipe 21 side.
[0044]
As shown in FIGS. 4 to 8, the main lower case 52 is provided with upward ribs 52e that face the ribs 52b and are substantially parallel to each other, and the dust 52 is between the opposing ribs 52b and 52e. An air passage 65 extending in the width direction of the suction port main body 22 is provided along the rear side of the transfer chamber 58. An intermediate portion in the longitudinal direction of the air passage 65 is communicated with the vent 36, and an upper portion of the air passage 65 is communicated with the circulation air blowing chamber 56. Therefore, the air discharged from the electric blower 11 and flowing out from the vent 36 flows along the air passage 65 in the width direction of the suction port main body 22 so as to bypass the rear side of the dust transfer chamber 58. The circulating air blowing chamber 56 is supplied and filled.
[0045]
As shown in FIGS. 5 to 7, vent portions 66 and 68 are opened on upper surfaces of both ends in the longitudinal direction of the middle case 53 in the main part so as to communicate with the rear side of both ends in the longitudinal direction of the dust transfer chamber 58. Further, on the upper surface of both ends in the longitudinal direction of the main middle case 53, other ventilation portions 67 and 69 each having a through hole are formed adjacent to the front side of the ventilation portions 66 and 68. These ventilation portions 67 and 69 are opposed to both ends in the longitudinal direction of the communication port 61 as representatively shown in FIG. 6, and as a result, communicate with the both ends in the longitudinal direction of the cleaning body accommodation chamber 57 from above. Is provided.
[0046]
Further, guide ribs 52f projecting downward at the boundary between one ventilation portion 66, 67 corresponding to the front-rear direction are integrally formed at both ends in the longitudinal direction of the main case 53, and corresponding to the front-rear direction. A guide rib 52g that protrudes downward from the other ventilation portion 68, 69 is integrally formed. As shown in FIGS. 5 and 6, the lower ends of the guide ribs 52g and 52f are in contact with or close to the longitudinal end of the upward leading edge 62a having a dust receiving shelf 62 in a bowl shape together with the rib 52b.
[0047]
The cleaning body driving device 25 is accommodated at one end side in the longitudinal direction of the suction port body main portion 22. As shown in FIGS. 7 and 8, the cleaning body drive device 25 is connected to an electric motor 71, a pair of front and rear final gears (not shown), and one final gear and an output shaft of the electric motor 71. In order to prevent dust from adhering to the final gear and the transmission mechanism, a dust-proof case 72 provided to cover the output shaft side of the electric motor 71, and both final gears are individually connected. And a pair of front and rear joints 73 and 74 (see FIG. 6) provided side by side so as to be exposed on the side surface of the dustproof case 72. For example, gears having the same diameter and the same number of teeth are used for the pair of final gears, and both the final gears and the joints 73 and 74 connected thereto are rotationally driven in opposite directions. The pair of joints 73 and 74 face the cleaning body accommodation chamber 57. In the present embodiment, the final gear and the transmission mechanism are formed by a gear train, but this is not restrictive. The cleaning body driving device 25 is air-cooled by being exposed to the wind that flows out of the air passage 65 and reaches the ventilation portion 68.
[0048]
A pair of front and rear bearing support portions (not shown) individually correspond to the joints 73 and 74 (not shown) at the end of the cleaning body storage chamber 57 located on the side opposite to the side where the cleaning body drive device 25 is installed. Is provided. A pair of front and rear rotary cleaning bodies 23 and 24 are detachably accommodated in the cleaning body accommodation chamber 57 as will be described later.
[0049]
As shown in FIGS. 9 and 10, both the rotary cleaning bodies 23, 24 have a joint 82 attached to one end portion of the cleaning body shaft 81 and a bearing 83 that rotatably supports the cleaning body shaft 81 at the other end portion. The first cleaning element and the second cleaning element are wound around the joint 82 and the bearing 83 so as to be spirally twisted two by two. First Cleaning element Uses a rubber plate blade 84 formed of a soft synthetic resin. Cleaning element Uses a bristle-like blade 85 in which brush hairs are arranged in a row. The plate-like blade 84 has a lower waist than the bristle brush-like blade 85 and is not easily deformed, and the radial width from the cleaning body shaft 81 is shorter than the bristle brush-like blade 85. A raised cloth can also be used for the plate-like blade 84.
[0050]
Both rotary cleaning bodies 23, 24 are preferably of the same diameter, and their diameter is defined by the rotation trajectory of the bristle brush blade 85 having the longest protruding width. 4 and 5, the rotation trajectory of the plate-like blade 84 is denoted by reference symbol R2, and the rotation trajectory of the bristle brush-like blade 85 is denoted by reference symbol R1. As shown in FIGS. 4 and 5, when the rotary cleaning bodies 23 and 24 are viewed from the axial direction, the rotation trajectory R2 of the plate blade 84 included in both the rotary cleaning bodies 23 and 24 slightly touches. At the same time, the rotation trajectories R1 of the bristle brush blades 85 are accommodated in the cleaning body accommodation chamber 57 in a state where they overlap each other in the front-rear direction of the suction port body 8. In FIG. 4, R3 indicates the size of the overlap. In the present invention, the rotation trajectory R2 of the plate-like blade 84 included in the rotary cleaning bodies 23 and 24 may be brought close to each other without being brought into contact with each other. In the state where they are overlapped as described above, the rotary cleaning bodies 23 and 24 are in a relational position where the tip of the plate blade 84 can hit the bristle brush blade 85 when they are rotated synchronously. Has been placed. In the housed state, the tips of the blades 84 and 85 of the rotary cleaning bodies 23 and 24 pass through the dust opening 57a and come into contact with the surface to be cleaned.
[0051]
The rotary cleaning body 23 on the front side is connected to the front joint 73 of the cleaning body driving device 25 with a joint 82 at one end thereof being detachably fitted, and a bearing 83 at the other end is connected to the main rotary cleaning body 23. By fitting from the lower side to the front bearing support portion (not shown) of the lower case 52, the lower case 52 is rotatably attached to the front portion of the cleaning body accommodation chamber 57, and can be removed by the reverse procedure. Similarly, the rear rotary cleaning body 24 is also connected to the rear joint 74 of the cleaning body driving device 25 with a joint 82 at one end thereof being detachably fitted and connected to the other end. The bearing 83 is fitted to the rear bearing support portion (not shown) of the main lower case 52 from the lower side so as to be rotatably attached to the rear portion of the cleaning body accommodation chamber 57, and can be removed by the reverse procedure. .
[0052]
A pressing plate 88 (see FIG. 9) is attached to the main lower case 52 so as to be detachable from the lower side to close a portion corresponding to the end of the cleaning body accommodation chamber 57 on the bearing support portion side. By this attachment, the front and rear bearing support portions are blocked from the lower side, and the joint 82 is prevented from falling off.
[0053]
In the above configuration, the second pipe 42 of the movable part 32 of the suction port 8, the passage 35 of the rotating pipe 34, the vent 36 of the rotating pipe 34, the air passage 65, the circulating air blowing chamber 56, and the vent parts 66 and 68. And the dust transfer chamber 58 are in communication with each other in the order of description, and form a return air passage that guides the air discharged from the electric blower 11 of the cleaner body 1 in the suction port 8. In addition, the first pipe 41 of the movable part 32 and the inner pipe part 33a of the rotating base pipe 33 that communicates directly with the first pipe 41 suck the air sucked into the electric blower 11 of the cleaner body 1 into the suction port body 8. An air passage is formed. The front end opening of the inner pipe portion 33 a that is the inlet of the suction air passage is communicated with the cleaning body accommodation chamber 57 through the dust transfer chamber 58 and the transfer chamber 58 through the communication port 61.
[0054]
And when cleaning using the suction port body 8 of the said structure and the air circulation type vacuum cleaner provided with this, the dust suction hose 4 and the dust suction pipe 5 are connected to the cleaner body 1 in order as shown in FIG. Then, the joint pipe 21 of the suction port body 8 is connected to the tip of the dust suction pipe 5 and any one of the control switches 17 provided on the handle 15 of the suction hose 4 is closed. By performing this closing operation, the electric blower 11 built in the cleaner body 1 is operated, and the cleaning body is operated as the electric motor 71 of the cleaning body driving device 25 built in the suction port body 8 is operated. The pair of front and rear rotary cleaning bodies 23, 24 in the storage chamber 57 rotate in synchronization with each other in the inner-inward direction, that is, in the direction facing each other in the dust removal opening 57a (see arrows A and B in FIGS. 3 to 5). Driven. In addition, rotation of the rotary cleaning bodies 23 and 24 can be arbitrarily stopped by switch operation.
[0055]
On the other hand, the air in the dust transfer chamber 58 of the suction port 8 is sucked by the suction action of the electric blower 11, and this suction air is connected to the first pipe 41 of the movable portion 32 in the joint pipe 21 and the circuit directly communicating with the first pipe 41. The air is sucked into the dust collection chamber via the respective suction air passages of the inner tube portion 33a of the dynamic base tube 33, the dust suction pipe 5, the dust suction hose 4, and the dust suction port 3 (route indicated by the solid line arrow in FIG. 1). Dust is removed by the dust bag 9 and the suction airflow is discharged from the electric blower 11 as exhaust air. This exhaust air is returned to the return air passage member (not shown), the dust suction port 3, the dust suction hose 4, the dust suction pipe 5, and the suction port body 8 of the cleaner body 1 that forms the path indicated by the dotted arrow in FIG.
[0056]
Then, the exhaust gas returned to the suction port body 8 is supplied to the second pipe 42 of the movable portion 32, the passage 35 of the rotating tube 34, the vent 36 of the rotating tube 34, the air passage 65, the circulating air blowing chamber 56, the ventilation. After passing through the parts 66 and 68 and blown into the dust transfer chamber 58 from both longitudinal ends of the chamber 58 toward the joint pipe 21 side, the dust is collected on the cleaner body 1 side by the above-described suction. By repeating the above, the air discharged from the electric blower 11 is circulated through the cleaner body 1 and the suction port body 8.
[0057]
In this case, the circulating air blown into the circulating air blowing chamber 56 while being guided to the air passage 65 through both the inner and outer pipe portions of the joint pipe 21 passes through the ventilation portions 66 and 68 of the main middle case 53. While flowing into the dust transfer chamber 58 from both ends in the longitudinal direction, the guide ribs 52g and 52f guide the flow direction to the dust transfer chamber 58 along the longitudinal direction. Thereby, the circulating air flows in the longitudinal direction in the rear part of the dust transfer chamber 58 and is sucked into the inner pipe part 33 a which is the suction part of the joint pipe 21.
[0058]
In addition, a part of the air circulating between the cleaner body 1 and the suction port body 8 passes through the vents 67 and 69 and the end of the communication port 61 directly below the air flow, as described above. Then, it flows into the cleaning body storage chamber 57, flows through the storage chamber 57 in the longitudinal direction, passes through the communication port 61, reaches the dust transfer chamber 58 again, and merges with the wind flowing through the chamber 58, 21 is sucked into the inner pipe portion 33 a of the joint pipe 21 at a position corresponding to 21.
[0059]
As described above, the air discharged from the electric blower 11 of the cleaner main body 1 flows through the return air passage in the suction inlet body 8 from the return air passage of the dust suction hose 4 and the dust suction pipe 5, After being sucked into the suction air passage in the body 8, the air is sucked into the electric blower 11 from the dust collecting chamber of the cleaner body 1 through the suction air passage of the dust suction hose 4 and the dust suction pipe 5 and circulates.
[0060]
Since the cleaning body accommodation chamber 57 is not included in the main air circulation path, the main circulating air does not flow through the cleaning body accommodation chamber 57. Therefore, most of the return air introduced into the suction port body 8 does not circulate along the outer peripheral surfaces of the two rotary cleaning bodies 23 and 24 in the cleaning body accommodation chamber 57, and the cleaning body accommodation chamber 57. It flows through the upper dust transfer chamber 58 and is sucked into the inner pipe portion 33a of the joint pipe 21 to be collected on the cleaner body 1 side.
[0061]
In the main air circulation, the air introduced into the dust transfer chamber 58 from the end in the longitudinal direction thereof has energy that originally flows by the exhaust pressure of the electric blower 11, Since the cross-sectional area of the flow path is small, the dust transfer chamber 58 is circulated at a high speed.
[0062]
On the other hand, simultaneously with the air circulation, the pair of front and rear rotary cleaning bodies 23 and 24 are rotationally driven, and the blades 84 and 85 scrape dust on the surface to be cleaned. In this case, since the two rotary cleaning bodies 23 and 24 are rotationally driven in a direction facing each other in the dust removing opening 57a, the dust on the surface to be cleaned is splashed around the rotary cleaning bodies 23 and 24. However, the rotary cleaning bodies 23 and 24 are forced to scrape upward while passing between the rotary cleaning bodies 23 and 24 while restricting the dust delivery direction. This scraping is performed over the entire length of the rotary cleaning bodies 23, 24, in other words, over the entire length of the suction port body 8 in the width direction.
[0063]
The dust scraped up from the surface to be cleaned in this way causes the communication port 61 facing the space between the upper peripheral surfaces of the two rotary cleaning bodies 23 and 24 facing each other by the momentum. It passes easily without being obstructed and is guided to the dust receiving shelf 62 side on the oblique guide wall 53a of the main middle case 53 facing the communication port 61. In addition, the dust transfer chamber 58 reaches the dust transfer chamber 58 through the communication port 61 due to the influence of high-speed wind that mainly flows on the dust receiving shelf 62 in the dust transfer chamber 58 and the influence of air suction in the inner pipe portion 33a. The air is flowing so as to join the high-speed wind.
[0064]
Therefore, the dust that has passed through the communication port 61 due to the scraping does not fall freely below it and return to the cleaning body accommodation chamber 57, and this dust is smoothly transferred to the dust receiving shelf 62 side behind the communication port 61. It can be moved to and placed on the shelf 62. In addition, since the tip edge 62a of the dust receiving shelf 62 is raised, it is possible to prevent the dust once placed on the dust receiving shelf 62 from dropping over the tip edge 62a, and this raised tip edge 62a. Since the dust receiving rack 62 can be made into a bowl shape so as to be a path for wind, it is possible to smoothly guide the flow of the high-speed wind flowing on the dust receiving rack 62 and to cause the higher speed wind to flow on the dust receiving rack 62. it can.
[0065]
As described above, the circulating airflow flows at high speed in the dust transfer chamber 58 to which dust is supplied from the cleaning body accommodation chamber 57 in this way. Therefore, the dust on the dust receiving shelf 62 and the dust floating in the dust transfer chamber 58 can be transferred to the joint pipe 21 on a high-speed air stream and sucked into the inner pipe portion 33a.
[0066]
Thus, the dust swept up by the two front and rear rotary cleaning bodies 23 and 24 is transferred to the suction side by the high-speed air flowing through the dust transfer chamber 57 different from the cleaning body accommodation chamber 57. The two rotary cleaning bodies 23 and 24 do not become air path resistance in the air transfer of the dust to reach. Therefore, the dust transferred to the air is hardly caught by the rotary cleaning bodies 23 and 24, and the dust thus picked up can be smoothly and reliably transferred to the inner pipe portion 33a of the joint pipe 21 and sucked therein.
[0067]
Therefore, even if the dust is scraped up at the end in the width direction of the suction port body 8 where the suction force is difficult to spread, it can be transferred to the air as described above and sucked into the joint pipe 21. Dust removal performance can be improved.
[0068]
In addition, the suction force mainly acts on the dust transfer chamber 57 through which high-speed air flows, and the chamber 57 is communicated with the lower cleaning body accommodation chamber 57 through the communication port 61 which is a throttle. The ripple of suction force is weak. Therefore, it is possible to prevent the dust removing opening 57a of the cleaning body accommodating chamber 57 facing the surface to be cleaned from being sucked by the surface to be cleaned, and the suction port body 8 can be moved lightly on the surface to be cleaned. Good.
[0069]
As described above, in the cleaning using the suction port body 8 having the above-described configuration and the air circulation type vacuum cleaner provided with the same, the dust on the surface to be cleaned which the pair of front and rear rotary cleaning bodies 23 and 24 are scraped up, The dust transfer chamber 58 is moved to the dust transfer chamber 58 located on the cleaning body storage chamber 57 and is discharged from the electric blower 11 and flows through the dust transfer chamber 58 at high speed while being substantially completely circulated. The dust inside can be transferred and sucked into the suction air passage, and the surface to be cleaned can be cleaned while lightly moving the suction port 8 onto the surface to be cleaned.
[0070]
Further, as described above, a part of the circulating air is introduced into the cleaning body accommodation chamber 57 and then merged with the airflow flowing through the dust transfer chamber 58 through the communication port 61. Therefore, the rotary cleaning bodies 23 and 24 However, it is excellent in that the dust scraped up from the surface to be cleaned can be smoothly carried onto the dust receiving shelf 62 and the dust removal performance can be further improved.
[0071]
In the above-described cleaning, the double-rotating cleaning bodies 23 and 24 that scrape up the dust in contact with the surface to be cleaned have the plate blades 84 suitable for cleaning the flooring floor, and for cleaning carpets and tatami mats. Since the suitable bristle brush-like blade 85 is provided, the compatibility with various surfaces to be cleaned is good.
[0072]
By the way, during the cleaning, a part of the dust that has been lifted up adheres particularly to the bristle brush blades 85 of the rotary cleaning bodies 23 and 24. This dust is removed from the side where the dust adheres as follows. Thus, as described above, the vacuum cleaner body 1 is sucked through the dust transfer chamber 58.
[0073]
That is, the two front and rear rotary cleaning bodies 23 and 24 are arranged so that the rotation locus R1 of the bristle-brush blade 85 and the rotation locus R2 of the plate blade 84 overlap each other when viewed from the axial direction. Therefore, when the two front and rear rotary cleaning bodies 23 and 24 are driven to rotate, the bristle brush blade 85 of one rotary cleaning body and the tip of the plate blade 84 of the other rotary cleaning body contact each other. To do.
[0074]
This contact is caused by dynamic factors such as flexible deformation of the blades 84 and 85 due to dust scraping, the bristles of the bristle-brush-like blade 85 spreading from the root side, and the double-rotating cleaning body 23, This is possible due to 24 mutual positional relationships. In particular, in the rotary cleaning bodies 23 and 24 that are rotationally driven inward and outward as shown in FIGS. 4 and 5, the blade 85 is attached to the bristle brush-like blade 85 of the rotary cleaning body 23 that precedes the front side in the rotational direction. In the configuration in which the plate-like blade 84 of the rotary cleaning body 24 that is followed from the rear side in the rotation direction is brought close, the contact between the two blades 84 and 85 is still easier.
[0075]
In this way, when the rotary cleaning members 23 and 24 are driven to rotate while the blades 84 and 85 are in contact with each other, the leading edge of the plate-like blade 84 that has a lower waist than the bristle brush-like blade 85 becomes the bristle brush blade. Subsequently, the bristle brush-like blade 85 is rubbed as it hits the ball 85. Therefore, deposits such as cotton dust adhering to the bristle brush blade 85 during cleaning are removed by the plate blade 84. The dust thus removed is sent into the dust transfer chamber 58 by centrifugal force, and then sucked into the joint pipe 21 by the air transfer described above in the chamber 58.
[0076]
As described above, dust adhering to the bristle brush blade 85 during cleaning is automatically removed by the plate blade 84 during cleaning, so the amount of dust adhering to the rotary cleaning bodies 23 and 24 having the bristle brush blade 85 is reduced. Less. Accordingly, it is possible to reduce the trouble of periodically removing the cotton-like dust adhering to the rotary cleaning bodies 23 and 24.
[0077]
Moreover, when the rotary cleaning bodies 23 and 24 are rotationally driven, the tips of the plate blades 84 do not contact each other, or even if they come into contact with each other, the plate blades 84 contact each other. Forcible bending is prevented. Therefore, both the front and rear rotary cleaning bodies 23 and 24 rotate smoothly, and the load on the cleaning body drive device 25 that rotationally drives them can be reduced.
[0078]
In addition, you may implement this invention by making the rotational speed of both the rotation cleaning bodies 23 and 24 mutually differ in the said 1st Embodiment. In this case, for example, by changing the number of teeth of the pair of final gears included in the cleaning body driving device 25, the rotational speeds of the rotary cleaning bodies 23 and 24 can be made different from each other, and the front rotary cleaning body 23 is disposed on the rear side. It may be faster than the rotary cleaning body 24 on the side, or vice versa.
[0079]
In the case of carrying out in this way, there are many opportunities for the bristle-brush blade 85 and the plate-like blade 84 that are overlapping each other to contact each other due to the relative rotational speed difference between the two front and rear rotary cleaning bodies 23 and 24. It can be secured. Therefore, the dust adhering to the bristle brush blade 85 can be effectively removed by the plate blade 84 during cleaning.
[0080]
11 to 13 show a second embodiment of the present invention. This embodiment has shown the example which applied this invention to the non-air circulation type vacuum cleaner E and the suction inlet 111 for it.
[0081]
In FIG. 11, reference numeral 112 denotes a cleaner body that can be moved on a surface to be cleaned by a wheel (not shown). A dust suction port 113 provided at the front thereof has a flexible dust suction hose (not shown) and an inflexible dust suction. One end of a dust suction communication pipe having a pipe is detachably fitted and connected, and the other end of the connecting pipe is detachably fitted and connected. Only the suction air flow is allowed to pass through the dust suction communication pipe. A dust collection bag (filter) 114 is housed in the dust collection chamber at the front of the cleaner body 112 so that it can be put in and out, and an electric blower 115 and the like are housed in the blower chamber at the rear of the cleaner body 112. Yes. The air discharged from the electric blower 115 is configured to be discharged to the outside through the exhaust part 116 provided at the rear part of the cleaner body 112.
[0082]
The suction port body 111 includes a suction port body main portion 121, a pair of front and rear rotary cleaning bodies 123 and 124, a joint pipe 125, a cleaning body driving device 126, and the like.
[0083]
The suction port main part 121 is formed by connecting a main part upper case 128 and a main part lower case 129. The front portion of the main lower case 129 forms a cleaning body accommodation chamber 131, which has a dust removal opening 131a facing the surface to be cleaned. Further, as shown in FIGS. 11 and 13, a pair of front and rear partition walls 132, 133 made of upward ribs are integrally projected on the ceiling wall of the main lower case 129. A communication port 135 is provided between the walls 132 and 133.
[0084]
The main part upper case 129 is provided with the upper ends of the partition walls 132 and 133 being closed, and the space surrounded by the main part upper case 129 and the front and rear partition walls 132 and 133 is located above the cleaning body accommodation chamber 131. A dust transfer chamber 136 communicated with the chamber 131 through a communication port 135 is formed. The air passage cross-sectional area of the dust transfer chamber 136 is smaller than the air passage cross-sectional area of the cleaning body accommodation chamber 131. Further, a part of the ceiling wall is located on the rear partition wall 133 side and partitions between the dust transfer chamber 136 and the cleaning body accommodation chamber 131, and this wall portion is used as a dust receiving shelf 139. ing.
[0085]
The dust transfer chamber 136 and the dust receiving shelf 139 are provided so as to extend substantially in the width direction of the suction port main body 121. An air inlet 137 (see FIG. 12) is provided at least at one end in the longitudinal direction of the dust transfer chamber 136, for example, at both ends. These inlets 137 are opened, for example, on the upper surfaces of both end portions of the main upper case 129 so as to directly communicate with the outside of the suction port body 111 so that the outside air can be sucked.
[0086]
Of the pair of front and rear partition walls 132 and 133, for example, the rear partition wall 133 is positioned away from the air introduction port 137 along the longitudinal direction of the dust transfer chamber 136, preferably approximately in the longitudinal direction of the dust transfer chamber 136. An intake opening 138 is provided at the center. A front end portion of the joint pipe 125 is sandwiched and attached to the rear part of the upper and lower cases 128 and 129 at the central portion in the width direction of the suction port main body 121, and the joint pipe 125 and the intake opening 138 communicate with each other. Yes. The joint pipe 125 connected to the tip of the dust suction communication pipe is configured so that the suction air can mainly flow therethrough.
[0087]
Therefore, the suction force generated as the electric blower 115 is operated spreads to the dust transfer chamber 136 through the dust suction communication pipe, the joint pipe 125, and the suction opening 138, and is further throttled by the dust receiving shelf 139. The dust is transferred from the dust transfer chamber 136 to the cleaning body accommodation chamber 131 through the communication port 135.
[0088]
Therefore, outside air sucked into the dust transfer chamber 136 from the air inlet 137 flows through the dust transfer chamber 136 at a high speed, and is sucked into the joint pipe 125 through the intake opening 138. At the same time, the air in the storage chamber 131 is sucked into the dust transfer chamber 136 through the communication port 135 in a state where the suction pressure spreading to the cleaning body storage chamber 131 is reduced in accordance with the introduction of the outside air. The air merges with the high-speed air flow in the dust transfer chamber 136 and is sucked into the joint pipe 125 through the intake opening 138.
[0089]
As shown in FIG. 11, one end of the two front and rear rotary cleaning bodies 123 and 124 accommodated in the cleaning body accommodating chamber 131 so as to substantially fill this is supported by the bearing 141, and the other end is The gears 142 and 143 that mesh with each other are individually supported. The gears 142 and 143 having the same diameter and the same number of teeth form the final gear of the cleaning body driving device 126, and the two front and rear rotary cleaning bodies 123 and 124 face each other in the dust removal opening 131a by the synchronous rotation. As shown in FIG.
[0090]
The cleaning body driving device 126 incorporated in the suction port main body 121 includes an electric motor 145, a winding transmission mechanism 146, and the final gears 142 and 143. The winding transmission mechanism 146 includes a driving toothed pulley 147 connected to the electric motor 145, a driven toothed pulley 148 coaxially connected to the rear final gear 143, and the pulleys 147 and 148 are wound around. The timing belt 149 is formed. Accordingly, the two front and rear rotary cleaning bodies 123 and 124 are driven to rotate inward and backward by the power of the electric motor 145, and the dust on the surface to be cleaned is moved between the rotary cleaning bodies 123 and 124 by the blade as the cleaning element. Can be scraped to pass.
[0091]
The rotary cleaning bodies 123 and 124 housed in the cleaning body housing chamber 131 are configured so that the two first and second cleaning elements are spirally twisted on the outer periphery of the cleaning body shaft 153, respectively. It is formed by winding. First Cleaning element Uses a rubber plate blade 154 formed of a soft synthetic resin. Cleaning element A bristle brush-like blade 155 is used in which the bristle is arranged in a row. The plate-like blade 154 has a lower waist than the bristle brush-like blade 155 and is not easily deformed, and has a shorter width in the radial direction from the cleaning body shaft 153 than the bristle brush-like blade 155. A raised cloth can also be used for the plate blade 154.
[0092]
Both rotary cleaning bodies 123 and 124 preferably have the same diameter, and their diameter is defined by the rotation locus R1 of the bristle brush blade 155 having the longest protruding width. In FIG. 11, reference symbol R <b> 2 indicates the rotation locus of the plate blade 154. As shown in FIG. 11, when the rotary cleaning bodies 123 and 124 are viewed from the axial direction, the rotation trajectory R2 of the plate blade 154 included in both the rotary cleaning bodies 123 and 124 is slightly in contact with the bristle brush. The blades 155 are accommodated in the cleaning body accommodation chamber 131 such that the rotation trajectories R1 of the blades 155 overlap in the front-rear direction. In FIG. 11, R3 indicates the size of the overlap. In the state of being overlapped as described above, the rotary cleaning bodies 123 and 124 are in a relational position where the tip of the plate blade 154 can hit the bristle brush blade 155 when they are rotated synchronously. Has been placed. In the housed state, the tip portions of the blades 154 and 155 of the rotary cleaning bodies 123 and 124 pass through the dust opening 131a and come into contact with the surface to be cleaned.
[0093]
Also in the second embodiment, the rotation trajectory R2 of the plate-like blade 154 of the rotary cleaning bodies 123 and 124 overlaps the rotation trajectory R1 of the bristle brush-like blade 155, and these blades 154 and 155 are touching each other. Both rotary cleaning bodies 123 and 124 can be driven to rotate by the cleaning body driving device 126. Therefore, dust adhering to the bristle brush blade 155 during cleaning can be removed one after another by the plate blade 154 to reduce the amount of dust adhering to the rotary cleaning bodies 123 and 124 having the bristle brush blade 155. Therefore, the trouble of periodically cleaning the rotary cleaning bodies 123 and 124 can be reduced.
[0094]
Further, the dust scooped up from the surface to be cleaned by the two front and rear rotary cleaning bodies 123 and 124 that are rotationally driven in accordance with the operation of the cleaning body driving device 126 is formed on the upper side separately from the cleaning body accommodation chamber 131. The dust transfer chamber 136 is reached, and a part of the dust transfer chamber 136 falls freely on the dust receiving shelf 139. The dust transfer chamber 136 to which dust is thus supplied from the cleaning body accommodating chamber 131 is sucked in from the direction other than the surface to be cleaned through the air inlet 137 and flows at high speed. Dust on the dust receiving shelf 139 and dust floating in the dust transfer chamber 136 can be transferred to the intake joint pipe 125 and sucked into the pipe 125 by being put on the air flow.
[0095]
Since the dust thus scraped up is transferred to the suction side by the high-speed air flowing through the dust transfer chamber 136, the two rotary cleaning bodies 123 and 124 do not become air path resistance in such dust air transfer. . Therefore, the dust transferred to the air hardly gets caught by interfering with the rotary cleaning bodies 123 and 124, and the dust thus scraped up can be smoothly and reliably transferred to the joint pipe 125 and sucked therein. Therefore, even if dust is scraped up at the end in the width direction of the suction port body 111 where the suction force is not easily spread, it can be sucked by air transfer as described above. It can be improved.
[0096]
In addition, as the outside air is sucked in as described above, the lower cleaning body accommodation chamber 131 communicated from the joint pipe 125 through the communication port 135 which is a throttle. Acting suction force Is greatly reduced. For this reason, it is possible to prevent the dust removal opening 131a of the cleaning body accommodation chamber 131 facing the surface to be cleaned from being strongly sucked by the surface to be cleaned despite the non-air circulation type cleaning. Therefore, the suction inlet 111 can be moved lightly on the surface to be cleaned, and the operability is good.
[0097]
Also, the rotary cleaning bodies 123 and 124 Since the rotation locus R2 of the plate-like blade 154 and the rotation locus R1 of the bristle brush-like blade 155 overlap with each other, the rotary cleaning bodies 123 and 124 are driven to rotate while the blades 154 and 155 are in contact with each other. The dust attached to the bristle brush blade 155 can be removed one after another by the plate blade 154 to solve the problem of the present invention.
[0098]
In addition, in this invention, as a means to rotate two rotary cleaning bodies, in addition to what was illustrated in each said embodiment, it rotates by blowing a part or all of the suction airflow or the circulated airflow. Two rotating cleaning bodies can be rotated using a turbine, and a part or all of the suction airflow or the circulated airflow is blown onto at least one of the two rotating cleaning bodies. These two rotary cleaning bodies can also be rotated. Further, when using the cleaning body driving device, the transmission mechanism can be a gear train, a winding transmission section using a timing belt, or a transmission mechanism formed by a combination thereof. .
[0099]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0100]
According to the invention of claim 1, Since the dust swept up by the two rotary cleaning bodies is transferred to the suction side by the air flowing in a dust transfer chamber different from the cleaning body accommodation chamber, the end of the suction port body in the width direction where the suction force is difficult to spread Even if the dust is scraped up in step 1, it can be transferred to the air and sucked into the joint pipe, so that the dust removal performance can be improved. Moreover, The dust adhering to the bristle brush blade of at least one of the two front and rear rotary cleaning bodies is automatically removed during cleaning by the plate blade of the other rotary cleaning body. Therefore, the amount of dust attached to the rotary cleaning body having the bristle brush blade is reduced, and a suction port body that can reduce the trouble of periodically cleaning the rotary cleaning body can be provided.
[0101]
According to the second aspect of the present invention, it is possible to provide a suction port body in which it is easy to determine the delivery position of the dust scraped up from the surface to be cleaned.
[0102]
According to the invention of claim 3, during cleaning, not only the dust adhering to the bristle brush blade can be removed by the plate blade, but also the plate blades are prevented from being bent forcibly. The rotating cleaning body can be smoothly rotated.
[0103]
According to the fourth aspect of the present invention, it is possible to secure many opportunities for the bristle-brush blades and the plate-like blades that are overlapping each other to come into contact with each other, and to improve the cleaning performance of the plate-like blades with respect to the bristle-brush blades.
[0104]
According to the invention of claim 5, since the suction port body that can remove the dust adhering to the bristle brush blade by the plate blade during cleaning is provided, the rotating cleaning body to which the dust adheres during cleaning is provided. It is possible to provide a non-air circulation type electric vacuum cleaner that can reduce the trouble of cleaning.
[0105]
According to the invention of claim 6, since the suction port body that can remove the dust adhering to the bristle brush blade by the plate blade during cleaning is provided, the rotary cleaning body to which dust adheres during cleaning is provided. It is possible to provide an air circulation type electric vacuum cleaner that can reduce the trouble of cleaning.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an air circulation type vacuum cleaner according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a suction port provided in the electric vacuum cleaner of FIG.
FIG. 3 is a vertical side view showing the suction port body of FIG. 2;
4 is an enlarged longitudinal side view showing a portion between a width direction central portion and one end portion of the suction port body of FIG. 2;
5 is a longitudinal side view showing one end portion in the width direction of the suction port body of FIG. 2;
6 is a perspective view showing one end portion of the suction port body of FIG. 2 in an inverted state. FIG.
7 is a schematic plan view showing the suction port body of FIG. 2 with its main part upper cover removed. FIG.
8 is a schematic plan view showing a part of the suction port body of FIG. 2 in a cross-section with the main part upper cover and the main part middle cover removed. FIG.
9 is a bottom view showing the suction port body of FIG. 2. FIG.
10 is a plan view showing a rotary cleaning body provided in the suction port body of FIG. 2;
FIG. 11 is a schematic cross-sectional view showing a suction port body of a non-air circulation type vacuum cleaner according to a second embodiment of the present invention.
12 is a plan view showing the suction port body of FIG.
13 is a schematic plan view showing the suction port body of FIG. 11 with a part cut away in a state where the main part upper cover is removed.
[Explanation of symbols]
A ... Air circulation type vacuum cleaner , 1 ... Vacuum cleaner body , 8 ... Suction mouth , 9 ... Dust collection bag (filter) , 11 ... Electric blower , 21 ... Fitting pipe , 22 ... Main part of suction port , 23 ... Rotating cleaning body on the front side , 24: Rear rotating cleaning body , 25. Cleaning body drive device , 57. Cleaning body storage room , 57a ... Dust removal opening 58 ... Dust transfer chamber, 61 ... Communication port, 66,68 ... Ventilation part, 81 ... Cleaning shaft , 84 ... Plate blade (first cleaning element) , 85 ... Bristle brush-like blade (second cleaning element) , R1 ... Rotating locus of bristle brush blade , R2 ... Rotation locus of plate blade , R3: Overlap size of plate blade and bristle brush blade , E ... Non-air circulating vacuum cleaner , 111 ... Suction mouth , 112 ... Vacuum cleaner body , 114 ... Dust collection bag (filter) , 115 ... Electric blower , 121 ... Main part of the suction port , 123 ... Rotating cleaning body on the front side , 124: Rotating cleaning body on the rear side , 125 ... Fitting pipe , 126 ... Cleaning body driving device , 131 ... Cleaning body storage room , 131a ... Dust removal opening 135, communication port, 136, dust transfer chamber, 137, air inlet (vent), 142, 143... Final gear of the cleaning body driving device , 153 ... Cleaning shaft , 154 ... Plate blade (first cleaning element) , 155 ... Bristle brush-like blade (second cleaning element)

Claims (6)

被掃除面に臨む塵取り開口を有する清掃体収容室を吸込み口体主部に設け、この清掃体収容室に前記塵取り開口において互いに向かい合う方向に回転する２本の回転清掃体を並べて収容し、これら２本の回転清掃体の回転に伴い被清掃面から掻き上げられて前記２本の回転清掃体間を通過した塵を前記吸込み口体主部に取付けられた継手管に吸込む吸込み口体において、
前記清掃体収容室が、前記２本の回転清掃体を覆っていて前記２本の回転清掃体によって満たされるような大きさに形成されているとともに、
前記吸込み口体主部が、前記清掃体収容室が延びる方向と同方向に延びて前記清掃体収容室の上側に設けられた塵移送室と、前記両室を連通して前記清掃体収容室の上に設けられ前記掻き上げられた塵が通過する連通口と、前記塵移送室の長手方向の端部に設けられて前記清掃体収容室外の空気を前記塵移送室に前記清掃体収容室を流通させることなく導入する通気部とを夫々備え、
前記継手管が、前記塵移送室内を長手方向に流動する気流を吸込むように前記通気部から離れた位置で前記塵移送室に連通して前記吸込み口体主部に取付けられ、
前記両回転清掃体の内の少なくとも一方の回転清掃体が１以上の毛ブラシ状ブレードからなる清掃要素を備えるとともに、他方の回転清掃体が１以上の板状ブレードからなる清掃要素を備え、これら毛ブラシ状ブレードと板状ブレードとが互いに接しながら回転するように軸方向から見たときの前記清掃要素の回転軌跡をオーバーラップさせたことを特徴とする吸込み口体。 A cleaning body storage chamber having a dust removal opening facing the surface to be cleaned is provided in the main portion of the suction port, and two cleaning cleaning bodies that rotate in directions facing each other in the dust removal opening are accommodated side by side in the cleaning body storage chamber. A suction port body that sucks dust that has been scraped up from the surface to be cleaned with the rotation of the two rotary cleaning bodies and passed between the two rotary cleaning bodies into a joint pipe attached to the main portion of the suction port body. In
The cleaning body accommodating chamber is formed in a size that covers the two rotary cleaning bodies and is filled with the two rotary cleaning bodies,
The main body of the suction port extends in the same direction as the direction in which the cleaning body housing chamber extends, and a dust transfer chamber provided on the upper side of the cleaning body housing chamber, and communicates the two chambers with the cleaning body housing chamber. A communication port through which the dust that has been scraped up is passed, and an end portion in the longitudinal direction of the dust transfer chamber, and air outside the cleaning body storage chamber is transferred to the dust transfer chamber. Each with a ventilation part to introduce without circulating
The joint pipe is attached to the main portion of the suction port in communication with the dust transfer chamber at a position away from the ventilation portion so as to suck in an airflow flowing in the longitudinal direction in the dust transfer chamber,
At least one of the rotary cleaning bodies includes a cleaning element composed of one or more bristle brush blades, and the other rotational cleaning body includes a cleaning element composed of one or more plate blades. A suction port body characterized in that the rotation trajectory of the cleaning element is overlapped when viewed from the axial direction so that the bristle brush blade and the plate blade rotate in contact with each other. 前記両回転清掃体が前記塵取り開口において互いに向かい合う方向に回転されることを特徴とする請求項１に記載の吸込み口体。The suction port body according to claim 1, wherein the both rotary cleaning bodies are rotated in a direction facing each other in the dust opening. 前記両回転清掃体のいずれもが、前記毛ブラシ状ブレードからなる第１清掃要素と、この第１清掃要素よりも出幅が短い前記板状ブレードからなる第２清掃要素とを夫々備えており、前記両回転清掃体を軸方向から見た状態で、前記両回転清掃体の第１清掃要素と第２清掃要素との回転軌跡がオーバーラップしているとともに、前記両回転清掃体の第２清掃要素の回転軌跡が軽微に接触又は近接していることを特徴とする請求項１又は２に記載の吸込み口体。Each of the rotating cleaning bodies includes a first cleaning element made of the bristle brush-like blade and a second cleaning element made of the plate-like blade having a shorter protruding width than the first cleaning element. In the state where the both rotary cleaning bodies are viewed from the axial direction, the rotation trajectories of the first cleaning element and the second cleaning element of the both rotary cleaning bodies overlap with each other, and the second rotation cleaning bodies The suction port body according to claim 1 or 2, wherein a rotation trajectory of the cleaning element is slightly in contact with or close to the cleaning element. 前記両回転清掃体の回転速度が互いに異なっていることを特徴とする請求項１〜３の内のいずれか一項に記載の吸込み口体。The suction port according to any one of claims 1 to 3, wherein the rotational speeds of the rotary cleaning bodies are different from each other. 掃除機本体内の電動送風機の動作により、前記掃除機本体の集塵室に連通された吸込み口体の塵取り開口から被掃除面の塵を空気とともに吸込んで、この吸込んだ塵を前記集塵室内のフィルタに通して捕捉する電気掃除機において、前記吸込み口体に請求項１〜４の内のいずれか一項に記載の吸込み口体を用いたことを特徴とする電気掃除機。By the operation of the electric blower in the main body of the vacuum cleaner, the dust on the surface to be cleaned is sucked together with the air from the dust removal opening of the suction port connected to the dust collecting chamber of the main body of the vacuum cleaner, and the sucked dust is collected in the dust collecting chamber. The vacuum cleaner which captures through an indoor filter, The vacuum cleaner characterized by using the suction inlet body as described in any one of Claims 1-4 for the said suction inlet body. 電動送風機を内蔵した掃除機本体の集塵室に連通された吸込み口体の塵取り開口から被掃除面の塵を取込んで、この取込んだ塵を前記集塵室内のフィルタに通して捕捉し、前記フィルタを通過して前記電動送風機から排出された空気を前記吸込み口体に戻し、この排出空気を前記掃除機本体と前記吸込み口体とにわたって循環させながら掃除をする電気掃除機において、前記吸込み口体に請求項１〜４の内のいずれか一項に記載の吸込み口体を用いたことを特徴とする電気掃除機。Dust on the surface to be cleaned is taken from the dust collection opening of the suction port connected to the dust collection chamber of the main body of the vacuum cleaner with a built-in electric blower, and this dust is passed through the filter in the dust collection chamber and captured. In the vacuum cleaner that cleans the air exhausted from the electric blower after passing through the filter and returning the air to the suction port body and circulating the exhaust air over the vacuum cleaner body and the suction port body, The vacuum cleaner using the suction inlet body as described in any one of Claims 1-4 for the said suction inlet body.
JP2000344198A 2000-11-10 2000-11-10 Suction port and vacuum cleaner Expired - Fee Related JP3813811B2 (en)

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DE102007007844B4 (en) * 2007-02-16 2013-02-28 BSH Bosch und Siemens Hausgeräte GmbH Brush head of a cleaning device and cleaning device
JP5104270B2 (en) * 2007-12-10 2012-12-19 パナソニック株式会社 Vacuum cleaner suction and vacuum cleaner
GB2476810B (en) 2010-01-08 2014-01-08 Dyson Technology Ltd Cleaner head for a vacuum cleaner
WO2011083294A1 (en) * 2010-01-08 2011-07-14 Dyson Technology Limited A cleaner head
GB201313707D0 (en) 2013-07-31 2013-09-11 Dyson Technology Ltd Cleaner head for a vacuum cleaner
GB2530932A (en) * 2013-11-25 2016-04-06 Hoover Ltd Vacuum cleaner head
KR102137524B1 (en) * 2014-02-13 2020-07-24 삼성전자주식회사 Robot cleaner
KR101604798B1 (en) * 2014-08-21 2016-03-18 레이캅코리아 주식회사 Cleaner that have moisture removal function that use exhaust heat
JP2017131540A (en) * 2016-01-29 2017-08-03 株式会社コーワ Suction unit for bedding and vacuum cleaner

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