JP3777493B2 - Vacuum cleaner suction tool - Google Patents

Vacuum cleaner suction tool Download PDF

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Publication number
JP3777493B2
JP3777493B2 JP26476198A JP26476198A JP3777493B2 JP 3777493 B2 JP3777493 B2 JP 3777493B2 JP 26476198 A JP26476198 A JP 26476198A JP 26476198 A JP26476198 A JP 26476198A JP 3777493 B2 JP3777493 B2 JP 3777493B2
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Japan
Prior art keywords
roller body
suction tool
vacuum cleaner
hole
cloth roller
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JP26476198A
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JP2000093365A (en
Inventor
浩二 蓮
健児 柳沢
史郎 石井
孝暢 上岡
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Priority to JP26476198A priority Critical patent/JP3777493B2/en
Priority to KR1019980051681A priority patent/KR100295208B1/en
Priority to CNB981255434A priority patent/CN1146348C/en
Publication of JP2000093365A publication Critical patent/JP2000093365A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0488—Combinations or arrangements of several tools, e.g. edge cleaning tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、拭き機能を備えた電気掃除機用吸込具に関するものである。
【０００２】
【従来の技術】
図１５乃至図１７は例えば特開平５−２６１０３５号公報に示されている従来のこの種電気掃除機用吸込具を示すもので、図１５はその縦断面図、図１６はその要部の分解斜視図、図１７はその要部の縦断面図である。
【０００３】
この従来例の電気掃除機用吸込具は、床用吸込具の本体１が上ケース２と下ケース３をバンパー４を挟んで一体に結合されている。５は下部ケース３に設けた吸込口で、吸込口５から吸引された空気流は上下のケース２，３に回転自在に装着された連結管６を介して電気掃除機本体（図示せず）に流れるようになっている。７は下部ケース３の前部の左右端に設けた前車輪、８は下ケース３の後部に着脱自在に設置した起毛布ローラ体８である。
【０００４】
起毛布ローラ体８は、図１６及び図１７に示すように円筒ローラ９の外周に起毛布１１を巻き付けたもので、取り外すことにより起毛布１１の洗浄を行えるようにしている。起毛布ローラ体８の両端にはそれぞれ段筒状のホルダ１２が嵌着固定され、各ホルダ１２の中心孔１２ａにそれぞれポペット状の軸受部材１３の軸部１３ａが摺動自在に差し込まれている。軸受部材１３は、その軸部１３ａの先端が反割に形成され、反割部の外周にそれぞれ爪１３ｂが形成されていて、軸部１３ａをホルダ１２の中心孔１２ａに差し込んだ際には、各爪１３ｂがホルダ１２の内端面と係合できるようになっており、これによってホルダ１２からの脱落が防止されるようになっている。軸受部材１３の頭部外側端面には、矩形状の突起１３ｃが突出形成され、この突起１３ｃが下ケース３に穿設した矩形孔３ａ内に嵌入して回動を規制された状態で支承されるようになっている。また、軸受部材１３の頭部内側端面とホルダ１２の外端面との間には、軸受部材１３を常時外側方向（爪によるホルダとの係合方向）に付勢するコイルばね１４が配設されている。従って、起毛布ローラ体８、ホルダ１２、軸受部材１３、及びコイルばね１４は、組付によって一体化される。
【０００５】
この従来例において、吸込口５から吸込まれた塵埃などは、連結管６から図示しない延長パイプ、可撓性ホースを通って電気掃除機本体内に堆積する。吸込具の前進時には、吸込口５が塵埃などを吸込んだあとで起毛布ローラ体８が床面上を通過し、床面上に付着したほこりなどを起毛布１１によって拭きとる。このとき、起毛布ローラ体８は、床面上では摩擦抵抗がコイルばね１４の付勢力より小さいため回転せず、固定された状態で床面を拭きとる。一方、吸込具により絨毯の掃除をするときは、摩擦抵抗が大きいため起毛布ローラ体８はコイルばね１４の付勢力に打勝って回転し、絨毯の表面をクリーニングする。
【０００６】
起毛布１１の洗浄のために起毛布ローラ体８を下ケース３より取り外すには、まず起毛布ローラ体８を手で掴み、その状態で軸方向の一方側に移動させ、移動方向先端に位置する軸受部材１３の頭部をコイルばね１４の付勢力に抗してホルダ１２側に移動させる。この移動によって、移動方向後端に位置する軸受部材１３の頭部の突起１３ｃが下ケース３の矩形孔３ａより抜けるので、その状態から起毛布ローラ体８を傾けることにより、起毛布ローラ体８を下ケース３から離脱させることができる。ホルダ１２側に移動させられていた軸受部材１３は、起毛布ローラ体８の下ケース３からの離脱後にコイルばね１４の付勢力により元の位置まで復帰する。
【０００７】
【発明が解決しようとする課題】
従来の電気掃除機用吸込具は、以上のように起毛布ローラ体８、ホルダ１２、軸受部材１３、及びコイルばね１４を、組付によって一体化して独立構成しているため、起毛布１１の洗浄のために起毛布ローラ体８を下ケース３から取り外しても、起毛布ローラ体８からコイルばね１４を分離できず、起毛布１１を水洗いしたりするとコイルばね１４が錆び、軸受部の動作に不具合が生じて着脱が不可能になる可能性がある。また起毛布ローラ体８を消耗品として消費者に提供する場合、高コストの物となり不利益を与えることになる。更に摩擦抵抗が小さい床面上では、起毛布ローラ体８が回転せず、固定された状態で床面を拭きとるため、被掃除面と常に一か所で接することとなり、起毛布１１の摩耗が激しく、片減りの原因になる。
【０００８】
そこで、コイルばねを起毛布ローラ体から分離して床用吸込具本体側に配置し、前記起毛布水洗い後の軸受部の動作不具合等の問題を解消するとともに、くさび効果を利用して、例えば前進時に起毛布ローラ体を自動的に固定し、後進時に起毛布ローラ体の拘束を自動的に解いて自由転動できるようにしたものや、このくさび効果を利用した機構の手動解除機構等を設けて、被掃除面が絨毯である場合の操作性をも考慮したものが提案されている。この場合には、摩擦抵抗が小さい床面上においても、後進時に起毛布ローラ体が回転するため、前記従来例のように起毛布ローラ体が一か所で接することはなく、前後進を繰り返す度に接触面の移動が行われ、片減りが低減される。とは言え、前進時には起毛布ローラ体の回転が完全に固定されるため、片減りの問題が完全に解消されたわけではなかった。
【０００９】
そこで、前記同様にコイルばねを起毛布ローラ体から分離構成するとともに、起毛布ローラ体の支持部に粘性抵抗装置を設けて、摩擦抵抗の小さい被掃除面を掃除する際は起毛布ローラ体をゆっくり回転させ、摩擦抵抗の大きい被掃除面を掃除するときは起毛布ローラ体を前記よりも若干早く回転させるようにして、片減りの問題を解消したものが提案されている。しかしながら、この場合には粘性抵抗装置が複雑で部品点数の増加も招き、コスト高になるのを避けられない。
【００１０】
また、いずれの従来例においても、起毛布ローラ体は、起毛布を巻き付けた円筒ローラと、その両端に一体化される支持部とが相対回動する方式を採用している。このため、起毛布ローラ体の部品点数が多く、この面でもコストの削減が図れない。更に相対回動部の隙間から砂ごみが侵入するのを避けられず、回転不良が発生する。このような状態になると、その構造上、使用者が分解掃除することは不可能である。
【００１１】
本発明の技術的課題は、起毛布ローラ体そのものの構成およびその自由回転抑制機構を単純化でき、起毛布の片減りがなく、かつ起毛布ローラ体を回動自在に支持する支承部に砂ごみ等の侵入があってもこれを使用者が簡単に取り除くことができるようにすることにある。
【００１２】
【課題を解決するための手段】
本発明の請求項１に係る電気掃除機用吸込具は、下記の構成からなるものである。すなわち、床面などを拭くための起毛布ローラ体を備えた電気掃除機用吸込具において、起毛布ローラ体を、多数の微細孔が設けられあるいは多孔体からなり起毛布を巻き付けた円筒ローラと、その両端部に一体化された円筒状のキャップとから形成するとともに、各キャップの外端に、それぞれ栓塞可能な円筒状の突起を設け、吸込具本体には、一方の突起を支承する凹部と他方の突起を支承する穴を形成し、かつこの穴の内方に、この穴を貫通した突起を凹部側へ直接付勢する付勢手段を設けたものである。
【００１３】
また、本発明の請求項２に係る電気掃除機用吸込具は、付勢手段を、吸込具本体を形成する上ケースと下ケースの間に基端が挾持されて自由端が穴の内方に延出する板ばねから構成したものである。
【００１４】
また、本発明の請求項３に係る電気掃除機用吸込具は、付勢手段を、吸込具本体を形成する上ケースまたは下ケースから穴の内方に延出する舌状片から構成したものである。
【００１５】
また、本発明の請求項４に係る電気掃除機用吸込具は、起毛布ローラ体の突起が貫通する穴側に、この起毛布ローラ体の回転方向の一方向の動きを制限する制動手段を設け、この制動手段は、吸込具本体における起毛布ローラ体のキャップ周面との間で楔状空間を形成する平面部と、楔状空間内に所定量食い込み可能に平面部とキャップ周面との間に介在設置され、床面抵抗に伴う負荷が規定以上に作用した場合に、制限方向の回動を許容する軟質体からなる制動部材とから構成したものである。
【００１６】
また、本発明の請求項５に係る電気掃除機用吸込具は、制動部材を、中心軸を有するコマ形の制動輪から構成して横軸配置するとともに、下ケースに、制動輪の輪部を楔状空間内に挿入可能とする孔を形成し、この孔の縁部を制動輪食い込み量の制限手段として構成したものである。
【００１７】
また、本発明の請求項６に係る電気掃除機用吸込具は、制動輪の上方向移動量を制限するリブを上ケースより垂下して設けたものである。
【００１８】
【発明の実施の形態】
実施形態１．
以下、図示実施例により本発明を説明する。
図１は本発明の第１実施形態に係る電気掃除機用吸込具の正面側からみた縦断面図、図２はその起毛布ローラ体の着脱手順の説明図、図３はその外観を示す斜視図であり、各図中、前述の各従来例（図１５乃至図１７）に相当する部分には同一符号を付してある。
【００１９】
この第１実施形態の電気掃除機用吸込具は、床用吸込具の本体２１が、上ケース２と下ケース３を軟質材料からなるバンパー４介して一体に結合されてなり、かつその後部中央に、図示しない電気掃除機本体の吸引側に延長パイプ及び可撓性ホースを介し連通する連結管６が回転自在に装着されている。下ケース３の前部中央には連結管６に連なる吸込口５（図１５参照）が設けられ、吸込口５の左右に吸込溝１０が延設されている。また、下部ケース３の前部の左右端には、本吸込具を前後にスムーズに移動可能にするためと、本吸込具と床面との距離を一定に保つことを目的に前車輪７が設けられているとともに、下ケース３の吸込口５の後方に、床面などを拭くための起毛布ローラ体２２が着脱可能に設置されている。
【００２０】
起毛布ローラ体２２は、外周に起毛布２４を巻き付けた合成樹脂製の円筒ローラ２３と、円筒ローラ２３の両端にそれぞれ圧入によって嵌着固定された高摺動材からなる円筒状のキャップ２５，２６とから構成され、下ケース３から取り外すことにより起毛布２４の洗浄を行えるようになっている。なお、キャップ２５，２６の固定は圧入によるものばかりでなく、例えば接着剤による固定、爪による固定、キーによる固定、スプライン係合状態下での固定、など種々採用可能である。
【００２１】
キャップ２５，２６には、その外端に円筒状の突起２５ａ，２６ａが設けられており、突起２５ａ，２６ａを介して下ケース３に回転自在に直接支持されるようになっている。なお、突起２５ａ，２６ａは円柱状に形成してもよいが、洗浄時に円筒ローラ２３内に水が侵入する可能性を考慮して、内部乾燥まで行えるようにここでは円筒状とした。
【００２２】
ところで、突起２５ａ，２６ａを円筒状とすることで、これを積極的に利用することもできる。すなわち、突起２５ａ，２６ａの中心孔２５ｂ，２６ｂより円筒ローラ２３内に水を供給することができる。従って、円筒ローラ２３に多数の微細孔を形成し、あるいは円筒ローラ２３を多孔体（例えばセラミック）から形成して、外表面に水が滲むように構成すれば、起毛布ローラ体２２に水拭き機能も持たせることが可能となる。この場合、中心孔２５ｂ，２６ｂを内部挿入型のゴム栓などにより閉塞できるようにすることが好ましい。これによって、突起２５ａ，２６ａの摺動面に影響を与えることなく、起毛布ローラ体２２を水供給源となる水タンクとしても機能させることができ、構成の簡素化が図れる。
【００２３】
下ケース３の起毛布ローラ体設置部におけるキャップ２５，２６と対向する左右壁の一方には、一方のキャップ２５側の突起２５ａを回転自在に直接支持する凹部２７が設けられているとともに、他方の壁に他方のキャップ２６側の突起２６ａを回転自在に直接支持する穴２８が形成されている。なお、凹部２７と穴２８の内面に低摩擦材（例えば四弗化エチレン樹脂）をコーティングすることは好ましい。またここでは説明の都合上、凹部２７に一方の突起２５ａが、また穴２８に他方の突起２６ａが挿入されるとしているが、キャップ２５，２６は同一構成部材からなり、左右逆にして取り付けても問題はない。
【００２４】
穴２８の内方には、穴２８を貫通した突起２６ａに直接当接してこれを凹部２７側へ常時付勢することで起毛布ローラ体２２の脱落を防止する付勢手段である金属製の板ばね２９が設けられている。板ばね２９はＬ字状に形成され、その基端となる一方の片部２９ａが、上ケース２と下ケース３の間に挾持されて固定されるようになっている。すなわち、上ケース２には所定間隔離して対向する一対のボス３１ａ，３１ｂが設けられているとともに、下ケース３にその上ケース２との組付時にボス３１ａ，３１ｂ間に嵌入可能な条突起３２が設けられ、更に板ばね２９の基端片部２９ａに条突起３２が嵌入可能な長孔２９ｂが形成されている。従って、上ケース２と下ケース３を組み付ける前に、板ばね２９の自由端となる他方の片部２９ｃを穴２８の内方へ垂下するように配置して、板ばね２９の長孔２９ｂを下ケース３の条突起３２に嵌入させておけば、上ケース２と下ケース３を組み付けるだけで、板ばね２９の基端片部２９ａを上ケース２のボス３１ａ，３１ｂの下縁と下ケース３の内面との間に挾持することができ、かつ条突起３２によって板ばね２９の水平方向の自由動を規制することができる。
【００２５】
なお、板ばね２９の自由端側片部２９ｃにおける穴２８と対向する面部に、低摩擦材（例えば四弗化エチレン樹脂）をコーティングしてもよく、更にその面部に穴２８を貫通してきた起毛布ローラ体２２の突起２６ａの中心孔２６ｂ内に嵌入可能な小突起を形成してもよい。このような小突起を設けることで、起毛布ローラ体２２の着脱時に突起２６ａが穴２８内にいろんな角度から挿入されても、板ばね２９における突起２６ａの当接位置（荷重作用点）を常に同じ位置（例えば幅方向の中心位置）とすることができ、長期に亘って板ばね２９の塑性変形を防止することができる。
【００２６】
この第１実施形態の電気掃除機用吸込具において、起毛布２４の洗浄などのために起毛布ローラ体２２を下ケース３より取り外すには、まず図１の状態にある起毛布ローラ体２２を手で掴み、その状態で起毛布ローラ体２２全体を板ばね２９の付勢力に抗して穴２８側軸方向に移動させる。この移動によって、移動方向後端に位置する突起２５ａが下ケース３の凹部２７より抜けるので、その状態から起毛布ローラ体２２を図２に示すように下方向に傾けることにより、起毛布ローラ体２２を下ケース３から離脱させることができる。
起毛布洗浄後の起毛布ローラ体２２の下ケース３への取り付けは、前述と逆の手順により行う。
【００２７】
このように、この第１実施形態の電気掃除機用吸込具においては、起毛布ローラ体２２を、外周に起毛布２４を巻き付けた円筒ローラ２３とその両端に一体的に固定されたキャップ２５，２６とから構成し、起毛布ローラ体２２を下ケース３に回転自在に直接支持させるようにしているので、起毛布ローラ体２２の構成が簡素化されてコストの削減が図れるとともに、起毛布ローラ体２２そのものには相対回動部が存在しなくなって、従来のようなごみ侵入による回転不良などの問題を無くすることができる。また起毛布ローラ体２２を回動自在に支持する支承部、すなわち下ケース３の凹部２７や穴２８内に砂ごみ等の侵入があっても、下ケース３より起毛布ローラ体２２を取り外すだけで使用者が簡単に取り除くことができる。
【００２８】
また、起毛布ローラ体２２のキャップ２５，２６の外端に、それぞれ突起２５ａ，２６ａを設けるとともに、下ケース３に、一方の突起２５ａを回転自在に直接支持する凹部２７と他方の突起２６ａを回転自在に直接支持する穴２８を形成し、かつ穴２８の内方に、穴２８を貫通した突起２６ａを凹部２７側へ直接付勢する板ばね２９を設けているので、起毛布ローラ体２２の支承部とストローク調整機構の構成が簡素化されて一層のコスト削減が図れる。
【００２９】
また、突起２５ａ，２６ａを栓塞可能な円筒状に形成して円筒ローラ２３に多数の微細孔を設け、あるいは円筒ローラ２３を多孔体から形成することで、起毛布ローラ体２２に水拭き機能と水供給源となる水タンク機能を持たせることができる。
【００３０】
また、板ばね２９は、その基端が上ケース２と下ケース３間に挾持されることで取り付けられるように構成したので、取付作業が容易となって作業効率を向上させることができる。
【００３１】
実施形態２．
図４は本発明の第２実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図であり、図中、前述の第１実施形態（図１乃至図３）のものと同一部分には同一符号を付しその説明を省略する。
【００３２】
この第２実施形態の電気掃除機用吸込具は、起毛布ローラ体２２の下ケース３からの脱落を防止する付勢手段を、吸込具本体２１の上ケース２の内面から下ケース３の穴２８の内方に延出する舌状片４１から構成したものであり、それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００３３】
この第２実施形態の電気掃除機用吸込具においては、付勢手段となる舌状片４１を上ケース２に一体成形しているため、起毛布ローラ体２２のストローク調整機構にコイルばね等の別体の部材を用いる必要が無くなって構成が一層簡素化され、さらなるコスト削減が図れる。
【００３４】
ところで、吸込具本体２１の構成部材は殆どが射出成形により製作される。射出成形により製作される部材の内面側に一体の構造部が存在する場合、その構造部壁の肉厚は外殻側壁の肉厚の６０％以下にしないと、固化する際の引張応力により外殻表面における前記構造部根元部位２ａに引けが発生する。従って、上ケース２の内面から延出する舌状片４１の肉厚ｔは、できるだけ上ケース２の外殻側の肉厚Ｔよりも薄くすることが意匠上望まれる。
【００３５】
この引けの問題は、図４に破線で示すように、吸込具本体２１の上ケース２と下ケース３間に介在する軟質材料からなるバンパー４における舌状片対向面部に膨出部４ａを設け、膨出部４ａで舌状片４１の背面側を保持させて、舌状片４１の根元部に加わるストレスを緩和させ、これにより舌状片４１の肉厚ｔの薄肉化を図ることで、予め回避することができる。
【００３６】
なお、この第２実施形態においても前述の第１実施形態のものと同様に、舌状片４１の自由端における穴２８と対向する面部に、低摩擦材（例えば四弗化エチレン樹脂）をコーティングしてもよく、更にその面部に穴２８を貫通してきた起毛布ローラ体２２の突起２６ａの中心孔２６ｂ内に嵌入可能な小突起を形成してもよい。
【００３７】
実施形態３．
図５は本発明の第３実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図、図６はその底面図であり、各図中、前述の第１実施形態（図１乃至図３）のものと同一部分には同一符号を付しその説明を省略する。
【００３８】
この第３実施形態の電気掃除機用吸込具は、起毛布ローラ体２２の下ケース３からの脱落を防止する付勢手段を、吸込具本体２１の下ケース３の内面から穴２８の内方に延出する舌状片５１から構成するとともに、下ケース３における舌状片基部両側にスリット５２を形成したものであり、それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００３９】
この第３実施形態の電気掃除機用吸込具においては、付勢手段となる舌状片５１を下ケース３に一体成形しているため、前述の第２実施形態のものと同様に起毛布ローラ体２２のストローク調整機構にコイルばね等の別体の部材を用いる必要が無くなって構成が簡素化され、コスト削減が図れる。
【００４０】
また、下ケース３における舌状片基部両側にスリット５２を形成しているので、舌状片５１の下ケース３からの突出寸法が短くともその弾性変形可能な変位量を大きくすることができる。
【００４１】
なお、この第３実施形態においても前述の第２実施形態のものと同様に、舌状片５１の自由端における穴２８と対向する面部に、低摩擦材（例えば四弗化エチレン樹脂）をコーティングしてもよく、更にその面部に穴２８を貫通してきた起毛布ローラ体２２の突起２６ａの中心孔２６ｂ内に嵌入可能な小突起を形成してもよい。
【００４２】
実施形態４．
図７は本発明の第４実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図であり、図中、前述の第１実施形態（図１乃至図３）のものと同一部分には同一符号を付しその説明を省略する。
【００４３】
この第４実施形態の電気掃除機用吸込具は、起毛布ローラ体２２の下ケース３からの脱落を防止する付勢手段を、吸込具本体２１の上ケース２と下ケース３間に介在する軟質材料からなるバンパー４から延出して穴２８の内方空間を埋める膨出部６１から構成したものであり、それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００４４】
この第４実施形態の電気掃除機用吸込具においては、付勢手段となる膨出部６１を軟質材料製のバンパー４から延出させて形成しているため、前述の第２、第３実施形態のものと同様に起毛布ローラ体２２のストローク調整機構にコイルばね等の別体の部材を用いる必要が無くなって構成が簡素化され、コスト削減が図れる。
【００４５】
また、膨出部６１が軟質材料すなわち弾性体からなるため、弾性変形可能な変位量を一層大きくすることができ、その分、起毛布ローラ体２２の支承部の軸方向寸法を大きくとることができて、起毛布ローラ体２２の装着状態が安定し、電気掃除機使用時の安定性が向上する。
【００４６】
なお、この第４実施形態においてもバンパー４の膨出部６１における穴２８と対向する部位に、低摩擦材（例えば四弗化エチレン樹脂）をコーティングしてもよい。
【００４７】
実施形態５．
図８は本発明の第５実施形態に係る電気掃除機用吸込具の側面側からみた要部の縦断面図、図９はその正面側からみた縦断面図であり、各図中、前述の第１実施形態（図１乃至図３）及び第２実施形態（図４）のものと同一部分には同一符号を付しその説明を省略する。
【００４８】
この第５実施形態の電気掃除機用吸込具は、起毛布ローラ体２２の突起２６ａが貫通する穴２８側に、起毛布ローラ体２２の回転方向の一方向（ここでは前進時）の動きを制限する制動手段７１を設け、拭き機能を得られるようにしたものである。
【００４９】
これを更に詳述すると、制動手段７１は、下ケース３における起毛布ローラ体２２のキャップ２６の周面２６ｃと対向する壁面の一部に設けられてキャップ周面２６ｃとの間で楔状空間を形成する平面部７２と、この楔状空間内に所定量食い込み可能に平面部７２とキャップ周面２６ｃとの間に介在設置され、床面抵抗に伴う負荷が規定以上に作用した場合に、制限方向（前進方向）の回動を許容する軟質体からなる制動部材７３とから構成されている。
【００５０】
また、制動部材７３は、中心軸７４を有するコマ形の制動輪７５からなり、横軸配置されている。なお、中心軸７４と制動輪７５は、一体でも、また別体から構成してもよい。
【００５１】
下ケース３には、制動輪７５の輪部を楔状空間内に挿入可能とする孔７６が形成され、孔７６の縁部７６ａが制動輪食い込み量の制限手段として構成されている。
【００５２】
また、上ケース２には、制動輪７５の上方向移動量を制限する一対のリブ７７が垂下して設けられている。それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００５３】
この第５実施形態の電気掃除機用吸込具において、制動部材７３、特に制動輪７５に使用可能な軟質体としては、例えば塩化ビニール、合成ゴム、シリコンゴムなど採用可能であるが、いずれを採用するにせよ、硬度５０度〜８０度、表面摩擦係数（動摩擦係数）μｋは０．３〜０．９のものが望ましい。制動輪７５に用いる軟質体の硬度および表面摩擦係数の数値限定理由は次の通りである。
【００５４】
すなわち、硬度が５０度以下の場合、起毛布ローラ体２２の前進時に制動輪７５が楔状空間内に食い込んだ際の変形（図８に一点鎖線で示す）が大きくなり、制動輪７５が孔７６の縁部７６ａから楔状空間内へ必要以上に突出し、起毛布ローラ体２２を完全に停止させてしまう傾向が現れる。この状態から起毛布ローラ体２２を後進させると、キャップ２６が制動輪７５を楔状空間内の位置より解放する方向へ回転するので、食い込み状態が解除され、制動輪７５は図８に実線で示す位置に戻されるが、あまりに硬度が低いと、変形に伴う楔状空間内への突出量が大きくなり過ぎて、起毛布ローラ体２２を後進させても食い込み状態が解除されなくなり、起毛布ローラ体２２は停止状態から抜け出せなくなる。
【００５５】
硬度が８０度以上の場合、起毛布ローラ体２２の前進時に制動輪７５が楔状空間内に食い込む際の変形量が小さくなり、必要な食い込み量が得られず、楔効果が働かなくなる傾向が現れる。あまりに硬度が高いと、楔効果が働かなくなり、拭き機能が得られない。
【００５６】
制動輪７５の表面摩擦係数μｋが０．３以下の場合、起毛布ローラ体２２の前進時に制動輪７５が楔状空間内に食い込んだ際の変形量が最適（あるいはそれより若干大きい場合）であっても、制動輪７５と平面部７２との間で滑りが生ずる傾向が現れる。あまりに表面摩擦係数が低いと、楔効果が働かなくなり、拭き機能が得られない。
【００５７】
制動輪７５の表面摩擦係数μｋが０．９以上の場合、起毛布ローラ体２２の前進時に制動輪７５が楔状空間内に食い込んだ際の変形量（硬度）が最適（あるいはそれより若干小さい場合）に設定されていても、必要な変形量に達する前に制動輪７５と平面部７２との間で摩擦による引っかかりが生ずる傾向が現れ、甚だしい場合、引っかかりと解放が小刻みに繰り返されてサージングが発生する。あまりに表面摩擦係数が高いと、起毛布ローラ体２２の前進時に直ぐに楔効果が現れ、かつ起毛布ローラ体２２を後進させても食い込み状態が解除されなくなり、起毛布ローラ体２２は停止状態から抜け出せなくなるばかりでなく、制動輪７５やキャップ２６あるいは平面部７２を傷めてしまう虞れがある。
【００５８】
制動手段７１を起毛布ローラ体２２の突起２６ａが貫通する穴２８側に配置した理由は次の通りである。既述したように、吸込具本体２１の構成部材は殆どが射出成形により製作される。その関係で、キャップ２５，２６の周面２５ｃ，２６ｃは、突起側末端にかけて若干縮径するテーパに形成されている。従って、制動手段７１により楔効果を働かせた場合の力は、キャップ２６に対し凹部２７側軸方向（起毛布ローラ体取り付け方向）の分力として作用する。もし、制動手段７１を起毛布ローラ体２２の突起２５ａが支持されている凹部２７側に配置すれば、前記分力の作用方向が穴２８方向（起毛布ローラ体を取り外す方向）となり、起毛布ローラ体２２は拭き掃除の度に下ケース３から離脱させられる可能性がある。この第５実施形態のように、制動手段７１を起毛布ローラ体２２の突起２６ａが貫通する穴２８側に配置することで、起毛布ローラ体２２の下ケース３への取り付け状態が安定する。
【００５９】
下ケース３に設けた孔７６の縁部７６ａは、制動部材７３の中心軸７４が係合することで、制動輪７５の輪部の楔状空間内への突出量を制限している。
【００６０】
また、上ケース２に設けた一対のリブ７７は、起毛布ローラ体２２の後進時に制動部材７３が跳ね上げられることがあっても、そのリブ下縁で制動部材７３の中心軸７４の必要以上の上方向動を押さえることで、制動部材７３の制動輪７５が孔７６部から脱落するのを防止している。
【００６１】
したがって、この第５実施形態の電気掃除機用吸込具においては、掃除する際は、前進時に制動輪７５が楔状空間内に所定量食い込み、起毛布ローラ体２２の動きを制限して拭き機能が得られ、また後進時には制動輪７５が楔状空間内より解放されて、起毛布ローラ体２２が回転する。このため、起毛布ローラ体２２が一か所で接することはなく、前後進を繰り返す度に接触面の移動が行われ、片減りが低減される。
【００６２】
また、制動部材７３の硬度や表面摩擦係数を所定の範囲に限定し、更に楔状空間内への突出量も規制しているので、摩擦抵抗の小さい被掃除面を掃除する際でも、起毛布ローラ体２２の動きを完全に停止させることがなく、起毛布ローラ体２２がゆっくり回転し、摩擦抵抗の大きい被掃除面を掃除するときは起毛布ローラ体２２が前記よりも若干早く回転する。このため、片減りの問題が完全に解消される。
【００６３】
また、制動部材７３を中心軸７４を有するコマ形の制動輪７５から形成して、下ケース３には、制動輪７５の輪部を孔７６から楔状空間内に挿入し、制動輪７５の上方向移動量を制限する一対のリブ７７を有する下ケース３を上ケース２に結合するだけで取り付けられるようにしているので、起毛布ローラ体２２の自由回転を抑制する制動手段７１の構成が簡素化され、その分コストを削減することができる。
【００６４】
実施形態６．
図１０は本発明の第６実施形態に係る電気掃除機用吸込具の正面側からみた縦断面図であり、図中、前述の第１実施形態（図１乃至図３）及び第５実施形態（図８及び図９）のものと同一部分には同一符号を付しその説明を省略する。
【００６５】
この第６実施形態の電気掃除機用吸込具は、前述の第５実施形態のものの持つ機能を全て備えている。この第６実施形態では、起毛布ローラ体２２のキャップ２５，２６の周面に、それぞれ突起側末端にかけて若干縮径するテーパ２５ｄ，２６ｄを積極的に形成したものであり、それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００６６】
この第６実施形態の電気掃除機用吸込具においては、前述の第５実施形態のものと同様、制動手段７１を起毛布ローラ体２２の突起２６ａが貫通する穴２８側に配置するとともに、キャップ２５，２６の周面に積極的にテーパ２５ｄ，２６ｄを形成している。従って、制動手段７１により楔効果を働かせた場合の力の分は、キャップ２６に対し起毛布ローラ体取り付け方向である凹部２７側軸方向へ確実に作用する。このため、起毛布ローラ体２２の下ケース３への取り付け状態がより安定する。
【００６７】
実施形態７．
図１１は本発明の第７実施形態に係る電気掃除機用吸込具の側面側からみた要部の縦断面図、図１２はその制動手段の異なる態様を示す縦断面図であり、各図中、前述の第１実施形態（図１乃至図３）及び第６実施形態（図１０）のものと同一または同一機能部分には同一符号を付しその説明を省略する。なお、ここでは説明にあたって図１０を参照するものとする。
【００６８】
この第７実施形態の電気掃除機用吸込具は、起毛布ローラ体２２の突起２６ａが貫通する穴２８側に設けられて、起毛布ローラ体２２の回転方向の一方向（ここでは前進時）の動きを制限する制動手段８１を、下ケース３における起毛布ローラ体２２のキャップ２６のテーパ（周面）２６ｄと対向する壁面の一部に設けられてキャップ周面２６ｃとの間で楔状空間を形成する平面部７２と、軟質材料製のバンパー４の内面の一部から下ケース３の孔８２を介して前記楔状空間内まで延びるＬ状の腕８３と、楔状空間内に所定量食い込み可能に腕８３の先端に形成されて、床面抵抗に伴う負荷が規定以上に作用した場合に、前進方向の回動を許容する制動部材となる球状の膨出部８４とから構成したものである。それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００６９】
この第７実施形態の電気掃除機用吸込具において、バンパー４すなわち膨出部８４は、前述の第５実施形態のものと同様の硬度５０度〜８０度、表面摩擦係数（動摩擦係数）μｋが０．３〜０．９の軟質体（塩化ビニール、合成ゴム、シリコンゴムなど）から構成した。この膨出部８３に用いる軟質体の硬度および表面摩擦係数の数値限定理由は前述の第５実施形態で述べた通りであるので、ここでは説明を省略する。
【００７０】
この第７実施形態の電気掃除機用吸込具において、掃除する際は、前進時に膨出部８４が、楔状空間を形成するキャップ２６のテーパ２６ｄ及び平面部７２との摩擦力により楔状空間内に引っ張られて腕８３が延び、膨出部８４が楔状空間内に所定量食い込み（図１２）、起毛布ローラ体２２の動きを制限して拭き機能が得られ、また後進時には膨出部８４が楔状空間内より解放されて、起毛布ローラ体２２が回転する。このため、起毛布ローラ体２２が一か所で接することはなく、前後進を繰り返す度に接触面の移動が行われ、片減りが低減される。
【００７１】
また、制動部材すなわち膨出部８４の硬度や表面摩擦係数を所定の範囲に限定し、更に楔状空間内への突出量も腕８３により規制しているので、摩擦抵抗の小さい被掃除面を掃除する際でも、起毛布ローラ体２２の動きを完全に停止させることがなく、起毛布ローラ体２２がゆっくり回転し、摩擦抵抗の大きい被掃除面を掃除するときは起毛布ローラ体２２が前記よりも若干早く回転する。このため、片減りの問題が完全に解消される。
【００７２】
また、制動部材をバンパー４と一体の膨出部８４から形成しているので、起毛布ローラ体２２の自由回転を抑制する制動手段８１の構成がより簡素化され、一層コストを削減することができる。
【００７３】
実施形態８．
図１３は本発明の第８実施形態に係る電気掃除機用吸込具の側面側からみた要部の縦断面図であり、図中、前述の第１実施形態（図１乃至図３）及び第５実施形態（図８及び図９）のものと同一または同一機能部分には同一符号を付しその説明を省略する。なお、ここでは説明にあたって図９を参照するものとする。
【００７４】
この第８実施形態の電気掃除機用吸込具は、起毛布ローラ体２２の突起２６ａが貫通する穴２８側に設けられて、起毛布ローラ体２２の回転方向の一方向（ここでは前進時）の動きを制限する制動手段９１を、起毛布ローラ体２２のキャップ周面に形成した爪車９２と、上ケース２から垂下して先端が下ケース３の孔９５を貫通して爪車９２と噛み合う逆転止掣子片９３とからなる基本的にワンウェイクラッチに構成したものである。
【００７５】
また、爪車９２の逆転止掣子片先端が当接する歯面を、爪車通常回転方向（ここでは時計方向）へ傾斜する所定角度の斜面９２ａに形成し、床面抵抗に伴う負荷が規定以上に作用した場合に、逆転止掣子片９３の先端が斜面９２ａを超えて制限方向（ここでは反時計方向）の回動を許容するように構成したものである。
【００７６】
更に、バンパー４の内面突起７４を利用して逆転止掣子片９３の背面側を保持させて、逆転止掣子片９３の根元部に加わるストレスを緩和させ、これにより逆転止掣子片９３の薄肉化を図り、予め引けの問題を回避するようにしたものである。それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態のものと同一である。
【００７７】
この第８実施形態の電気掃除機用吸込具において、掃除する際は、前進時に逆転止掣子片９３の先端が爪車９２と噛み合い、起毛布ローラ体２２の動きを制限して拭き機能が得られ、また後進時には逆転止掣子片９３と爪車９２との噛み合いが解かれて、逆転止掣子片９３が爪車９２の歯面上を滑り、起毛布ローラ体２２が回転する。このため、起毛布ローラ体２２が一か所で接することはなく、前後進を繰り返す度に接触面の移動が行われ、片減りが低減される。
【００７８】
また、爪車９２の逆転止掣子片先端が当接する歯面を、爪車通常回転方向へ傾斜する斜面９２ａに形成し、床面抵抗に伴う負荷が規定以上に作用した場合に、逆転止掣子片９３の先端が斜面９２ａを超えて制限方向の回動を許容するように構成しているので、摩擦抵抗の小さい被掃除面を掃除する際でも、起毛布ローラ体２２の動きを完全に停止させることがなく、起毛布ローラ体２２が間欠的にゆっくり回転し、摩擦抵抗の大きい被掃除面を掃除するときは起毛布ローラ体２２が前記よりも若干早く回転する。このため、片減りの問題が完全に解消される。
【００７９】
実施形態９．
図１４は本発明の第９実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図であり、図中、前述の第１実施形態（図１乃至図３）、第３実施形態（図５及び図６）、及び第５実施形態（図８及び図９）のものと同一または同一機能部分には同一符号を付しその説明を省略する。なお、ここでも説明にあたって図９を参照するものとする。
【００８０】
この第９実施形態の電気掃除機用吸込具は、前述の第８実施形態のものの持つ機能を全て備えているが、ここでは起毛布ローラ体２２の動きが制限される方向を後進方向となるように爪車９２と逆転止掣子片９３を組み付け、更に逆転止掣子片９３を、爪車９２との係合を解除できる軸方向ストロークを有する外部操作可能なスライダ１０１と一体化している。なお、図中の符号１０２は上ケース２に設けた長孔であり、この長孔１０２内にスライダ１０１の操作部１０１ａが挿入され、外部操作を可能にしている。それ以外の構成（起毛布ローラ体に水拭き機能および水タンク機能を付加させることを可能とする構成も含む）は前述の第１実施形態および第３実施形態のものと同一である。
【００８１】
この第８実施形態の電気掃除機用吸込具において、掃除する際は、後進時に逆転止掣子片９３の先端が爪車９２と噛み合い、起毛布ローラ体２２の動きを制限して拭き機能が得られ、また後進時には逆転止掣子片９３と爪車９２との噛み合いが解かれて、逆転止掣子片９３が爪車９２の歯面上を滑り、起毛布ローラ体２２が回転する。このため、起毛布ローラ体２２が一か所で接することはなく、前後進を繰り返す度に接触面の移動が行われ、片減りが低減される。このように後進時に拭き機能を得られるようにすることで、起毛布ローラ体２２の前方配置が可能となる。
【００８２】
また、このように転止掣子片９３の先端が爪車９２と噛み合う向きを前述の第８実施形態のものと逆にすると、爪車９２の逆転止掣子片先端が当接する歯面が、爪車通常回転方向（前進方向）へ傾斜する斜面９２ａとなり、床面抵抗に伴う負荷が規定以上に作用した場合に、逆転止掣子片９３の先端が斜面９２ａを超えて制限方向の回動を許容する。これにより、摩擦抵抗の小さい被掃除面を掃除する際でも、起毛布ローラ体２２の動きを完全に停止させることがなく、起毛布ローラ体２２が間欠的にゆっくり回転し、摩擦抵抗の大きい被掃除面を掃除するときは起毛布ローラ体２２が前記よりも若干早く回転する。このため、片減りの問題が完全に解消される。
【００８３】
また、逆転止掣子片９３を、爪車９２との係合を解除できる軸方向ストロークを有する外部操作可能なスライダ１０１と一体化しているので、スライダ１０１を操作して逆転止掣子片９３と爪車９２との係合を解除することができる。従って、摩擦抵抗の大きい絨毯面を掃除するときに逆転止掣子片９３と爪車９２との係合を解除することで、起毛布ローラ体２２の自由回転を許容することができ、かつ逆転止掣子片９３と爪車９２との間で係合回転時に生じていた音を消すことができる。
【００８４】
【発明の効果】
以上述べたように、請求項１の発明によれば、起毛布ローラ体を、多数の微細孔が設けられあるいは多孔体からなり起毛布を巻き付けた円筒ローラと、その両端部に一体化された円筒状のキャップとから形成するとともに、各キャップの外端に、それぞれ栓塞可能な円筒状の突起を設け、吸込具本体には、一方の突起を支承する凹部と他方の突起を支承する穴を形成し、かつこの穴の内方に、この穴を貫通した突起を凹部側へ直接付勢する付勢手段を設けたので、起毛布ローラ体の構成が簡素化されてコスト削減が図れる。また起毛布ローラ体そのものには相対回動部が存在しなくなって、従来のようなごみ侵入による回転不良などの問題を無くすることができる。更に起毛布ローラ体を回動自在に支持する支承部内に砂ごみ等の侵入があっても、これを吸込具本体より起毛布ローラ体を取り外すだけで使用者が簡単に取り除くことができる。また起毛布ローラ体の支承部とストローク調整機構の構成が簡素化されて一層のコスト削減が図れる。また起毛布ローラ体に水拭き機能と水供給源となる水タンク機能を持たせることができる。
【００８５】
また、請求項２の発明によれば、付勢手段を、吸込具本体を形成する上ケースと下ケースの間に基端が挾持されて自由端が穴の内方に延出する板ばねから構成したので、取付作業が容易となって作業効率を向上させることができる。
【００８６】
また、請求項３の発明によれば、付勢手段を、吸込具本体を形成する上ケースまたは下ケースから穴の内方に延出する舌状片から構成したので、起毛布ローラ体のストローク調整機構にコイルばね等の別体の部材を用いる必要が無くなって構成が一層簡素化され、さらなるコスト削減が図れる。
【００８７】
また、請求項４の発明によれば、起毛布ローラ体の突起が貫通する穴側に、この起毛布ローラ体の回転方向の一方向の動きを制限する制動手段を設け、この制動手段は、吸込具本体における起毛布ローラ体のキャップ周面との間で楔状空間を形成する平面部と、楔状空間内に所定量食い込み可能に平面部とキャップ周面との間に介在設置され、床面抵抗に 伴う負荷が規定以上に作用した場合に、制限方向の回動を許容する軟質体からなる制動部材とから構成したので、拭き機能を持たせることができ、かつ楔効果を働かせた場合の力の分力を起毛布ローラ体取り付け方向に作用させることができて、起毛布ローラ体の取り付け状態の安定化が図れ、起毛布ローラ体の片減りの問題を完全に解消することができる。
【００８８】
また、請求項５の発明によれば、制動部材を、中心軸を有するコマ形の制動輪から構成して横軸配置するとともに、下ケースに、制動輪の輪部を楔状空間内に挿入可能とする孔を形成し、この孔の縁部を制動輪食い込み量の制限手段として構成したので、起毛布ローラ体の自由回転を抑制する制動手段の構成が簡素化され、その分コストを削減することができる。
【００８９】
また、請求項６の発明によれば、制動輪の上方向移動量を制限するリブを上ケースより垂下して設けたので、制動輪が跳ね上げられることがあっても、そのリブ下縁で制動輪の必要以上の上方向動を押さえることができ、制動輪が孔部から脱落するのを防止することができる。
【図面の簡単な説明】
【図１】 本発明の第１実施形態に係る電気掃除機用吸込具の正面側からみた縦断面図である。
【図２】 第１実施形態に係る電気掃除機用吸込具の起毛布ローラ体の着脱手順の説明図である。
【図３】 第１実施形態に係る電気掃除機用吸込具の外観を示す斜視図である。
【図４】 本発明の第２実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図である。
【図５】 本発明の第３実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図である。
【図６】 第３実施形態に係る電気掃除機用吸込具の底面図である。
【図７】 本発明の第４実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図である。
【図８】 本発明の第５実施形態に係る電気掃除機用吸込具の側面側からみた要部の縦断面図である。
【図９】 第５実施形態に係る電気掃除機用吸込具の正面側からみた縦断面図である。
【図１０】 本発明の第６実施形態に係る電気掃除機用吸込具の正面側からみた縦断面図である。
【図１１】 本発明の第７実施形態に係る電気掃除機用吸込具の側面側からみた要部の縦断面図である。
【図１２】 第７実施形態に係る電気掃除機用吸込具の制動手段の異なる態様を示す縦断面図である。
【図１３】 本発明の第８実施形態に係る電気掃除機用吸込具の側面側からみた要部の縦断面図である。
【図１４】 本発明の第９実施形態に係る電気掃除機用吸込具の正面側からみた要部の縦断面図である。
【図１５】 従来の電気掃除機用吸込具の縦断面図である。
【図１６】 従来の電気掃除機用吸込具の要部の分解斜視図である。
【図１７】 従来の電気掃除機用吸込具の要部の縦断面図である。
【符号の説明】
２ 上ケース、３ 下ケース、４ バンパー、２１ 吸込具本体、２２ 起毛布ローラ体、２３ 円筒ローラ、２４ 起毛布、２５，２６ キャップ、２５ａ，２６ａ 突起、２５ｂ，２６ｂ 突起の中心孔、２６ｃ キャップ周面（キャップ周面）、２７ 凹部、２８ 穴、２９ 板ばね（付勢手段）、４１，５１ 舌状片（付勢手段）、４ａ 膨出部（バンパーによる舌状片保持部）、５２ スリット、６１ 膨出部（付勢手段）、７１，８１，９１ 制動手段、７２ 平面部、７３ 制動部材、７４ 中心軸、７５ 制動輪、７６ 孔、７６ａ 孔の縁部（食い込み量制限手段）、７７ リブ（上方向移動量制限リブ）、８３ 腕、８４ 膨出部（制動部材）、２５ｄ，２６ｄ テーパ、９２ 爪車、９２ａ 斜面、９３ 逆転止掣子片、１０１ スライダ、１０１ａ 操作部。[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a vacuum cleaner suction tool having a wiping function.
[0002]
[Prior art]
  FIGS. 15 to 17 show a conventional vacuum cleaner suction tool disclosed in, for example, Japanese Patent Laid-Open No. 5-26135. FIG. 15 is a longitudinal sectional view thereof, and FIG. A perspective view and FIG. 17 are longitudinal sectional views of the main part.
[0003]
  In this vacuum cleaner suction tool, the main body 1 of the floor suction tool is integrally joined with the upper case 2 and the lower case 3 with the bumper 4 interposed therebetween. Reference numeral 5 denotes a suction port provided in the lower case 3, and the air flow sucked from the suction port 5 is connected to the upper and lower cases 2, 3 through a connecting pipe 6 that is rotatably attached to the main body of the vacuum cleaner (not shown). It is supposed to flow through. 7 is a front wheel provided at the left and right ends of the front portion of the lower case 3, and 8 is a raised cloth roller body 8 that is detachably installed at the rear portion of the lower case 3.
[0004]
  As shown in FIGS. 16 and 17, the raised cloth roller body 8 is formed by winding the raised cloth 11 around the outer periphery of the cylindrical roller 9, and the raised cloth 11 can be cleaned by removing it. Stepped cylindrical holders 12 are fitted and fixed at both ends of the raised cloth roller body 8, and shaft portions 13a of poppet-like bearing members 13 are slidably inserted into the central holes 12a of the holders 12, respectively. . As for the bearing member 13, the tip of the shaft portion 13a is formed in a split shape, and claws 13b are formed on the outer periphery of the split portion, and when the shaft portion 13a is inserted into the center hole 12a of the holder 12, Each claw 13b can be engaged with the inner end surface of the holder 12, so that it is prevented from falling off the holder 12. A rectangular protrusion 13c is formed on the outer end face of the head of the bearing member 13 so that the protrusion 13c is inserted into a rectangular hole 3a formed in the lower case 3 and supported in a state where the rotation is restricted. It has become so. Further, a coil spring 14 is disposed between the head inner end surface of the bearing member 13 and the outer end surface of the holder 12 so as to constantly urge the bearing member 13 in the outward direction (direction of engagement with the holder by the claw). ing. Therefore, the raised cloth roller body 8, the holder 12, the bearing member 13, and the coil spring 14 are integrated by assembly.
[0005]
  In this conventional example, dust or the like sucked from the suction port 5 is accumulated in the main body of the vacuum cleaner from the connecting pipe 6 through an extension pipe (not shown) and a flexible hose. When the suction tool moves forward, the raised cloth roller body 8 passes over the floor surface after the suction port 5 sucks dust and the like, and the dust adhered to the floor surface is wiped off by the raised cloth 11. At this time, the raised cloth roller body 8 does not rotate on the floor surface because the frictional resistance is smaller than the biasing force of the coil spring 14, and wipes the floor surface in a fixed state. On the other hand, when the carpet is cleaned with the suction tool, since the frictional resistance is large, the raised cloth roller body 8 rotates by overcoming the urging force of the coil spring 14 and cleans the surface of the carpet.
[0006]
  In order to remove the brushed fabric roller body 8 from the lower case 3 for cleaning the brushed fabric 11, first, the brushed fabric roller body 8 is grasped by hand and moved to one side in the axial direction in that state and positioned at the tip in the moving direction. The head of the bearing member 13 to be moved is moved toward the holder 12 against the urging force of the coil spring 14. By this movement, the projection 13c on the head of the bearing member 13 located at the rear end in the movement direction is pulled out from the rectangular hole 3a of the lower case 3, and the raised cloth roller body 8 is inclined by tilting the raised cloth roller body 8 from this state. Can be detached from the lower case 3. The bearing member 13 that has been moved to the holder 12 side returns to its original position by the urging force of the coil spring 14 after detachment from the lower case 3 of the raised cloth roller body 8.
[0007]
[Problems to be solved by the invention]
  Since the conventional vacuum cleaner suction tool has the brushed roller body 8, the holder 12, the bearing member 13, and the coil spring 14 integrated and assembled independently as described above, Even if the raised cloth roller body 8 is removed from the lower case 3 for cleaning, the coil spring 14 cannot be separated from the raised cloth roller body 8, and if the raised cloth 11 is washed with water, the coil spring 14 rusts and the operation of the bearing portion There is a possibility that it may become defective and cannot be attached or detached. Further, when the raised cloth roller body 8 is provided to the consumer as a consumable item, it becomes a high-cost item and is disadvantageous. Further, on the floor surface having a small frictional resistance, the raised cloth roller body 8 does not rotate and wipes the floor surface in a fixed state. Is severe and causes a reduction.
[0008]
  Therefore, the coil spring is separated from the raised cloth roller body and disposed on the floor suction tool main body side, and solves problems such as malfunction of the bearing after washing the raised cloth with water, and using the wedge effect, for example, The brushed roller body is automatically fixed when moving forward, and the raised roller body is automatically released when moving backward so that it can freely roll, and the manual release mechanism that uses this wedge effect, etc. It has been proposed to consider the operability when the surface to be cleaned is a carpet. In this case, even on the floor surface with low frictional resistance, the raised cloth roller body rotates at the time of backward movement, so that the raised cloth roller body does not contact at one place as in the conventional example, and the forward and backward movement is repeated. The contact surface is moved each time, and the amount of cut is reduced. However, since the rotation of the raised cloth roller body is completely fixed at the time of forward movement, the problem of the one-side reduction has not been completely solved.
[0009]
  Therefore, in the same manner as described above, the coil spring is separated from the raised cloth roller body, and a viscous resistance device is provided at the support portion of the raised cloth roller body so that the raised cloth roller body is used when cleaning the surface to be cleaned having a low frictional resistance. In order to clean the surface to be cleaned having a large frictional resistance by rotating it slowly, the brushed cloth roller body is rotated slightly faster than the above to eliminate the one-side reduction problem. However, in this case, the viscous resistance device is complicated and increases the number of parts, which inevitably increases the cost.
[0010]
  In any conventional example, the raised cloth roller body employs a system in which the cylindrical roller around which the raised cloth is wound and the support portions integrated at both ends thereof are relatively rotated. For this reason, the number of parts of the brushed cloth roller body is large, and the cost cannot be reduced even in this respect. Furthermore, it is inevitable that sand dust enters from the gap between the relative rotation parts, and rotation failure occurs. In such a state, the user cannot disassemble and clean it because of its structure.
[0011]
  The technical problem of the present invention is that the structure of the brushed cloth roller body itself and the free rotation suppression mechanism can be simplified, the brushed cloth body is not reduced, and the support portion that rotatably supports the brushed cloth roller body is sanded. This is to make it possible for the user to easily remove dust or other intrusions.
[0012]
[Means for Solving the Problems]
  The vacuum cleaner suction tool according to claim 1 of the present invention has the following configuration. That is, in the vacuum cleaner suction tool provided with a raised cloth roller body for wiping the floor surface, the raised cloth roller body,A large number of micropores or a porous bodyCylindrical roller wrapped with brushed clothAnd soIntegrated at both endsAnd a cylindrical projection that can be plugged at the outer end of each cap, and the suction tool body has a recess for supporting one projection and a hole for supporting the other projection. And an urging means for urging the projection penetrating the hole directly toward the concave portion is provided inside the hole.Is.
[0013]
  In addition, the vacuum cleaner suction tool according to claim 2 of the present invention,The biasing means is composed of a leaf spring in which the base end is held between the upper case and the lower case forming the suction tool body and the free end extends inward of the hole.Is.
[0014]
  Moreover, the vacuum cleaner suction tool according to claim 3 of the present invention comprises:A tongue-shaped piece that extends the biasing means from the upper case or the lower case forming the suction tool body to the inside of the hole.It consists of
[0015]
  Moreover, the vacuum cleaner suction tool according to claim 4 of the present invention comprises:Braking means for restricting movement in one direction of rotation of the brushed cloth roller body is provided on the hole side through which the protrusion of the brushed cloth roller body passes, and the braking means is arranged around the cap of the brushed cloth roller body in the suction tool body. When a plane part that forms a wedge-shaped space between the surface and the plane part and the cap peripheral surface so as to be able to bite into the wedge-shaped space and the load due to floor resistance acts more than specified And a braking member made of a soft body that allows rotation in the restricting direction;It consists of
[0016]
  In addition, the vacuum cleaner suction tool according to claim 5 of the present invention,The brake member is composed of a piece-shaped brake wheel having a central axis and is arranged on the horizontal axis, and a hole is formed in the lower case so that the ring portion of the brake wheel can be inserted into the wedge-shaped space. As a means to limit the amount of biting into the braking wheelIt is composed.
[0017]
  Moreover, the vacuum cleaner suction tool according to claim 6 of the present invention comprises:A rib that limits the amount of upward movement of the brake wheel is provided below the upper case.Is.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1. FIG.
  Hereinafter, the present invention will be described with reference to illustrated embodiments.
  FIG. 1 illustrates the present invention.First embodimentFIG. 2 is an explanatory view of the attaching / detaching procedure of the brushed cloth roller body, and FIG. 3 is a perspective view showing the appearance of the suction tool for a vacuum cleaner according to the present invention. Parts corresponding to the respective conventional examples (FIGS. 15 to 17) are denoted by the same reference numerals.
[0019]
  In the vacuum cleaner suction tool of the first embodiment, the main body 21 of the floor suction tool is integrally joined to the upper case 2 and the lower case 3 via a bumper 4 made of a soft material, and the rear center. Further, a connecting pipe 6 communicating with an extension pipe and a flexible hose is rotatably mounted on the suction side of the vacuum cleaner main body (not shown). A suction port 5 (see FIG. 15) connected to the connecting pipe 6 is provided at the front center of the lower case 3, and suction grooves 10 are extended to the left and right of the suction port 5. In addition, front wheels 7 are provided at the left and right ends of the front portion of the lower case 3 so that the suction tool can be moved smoothly back and forth and the distance between the suction tool and the floor surface is kept constant. The brushed roller body 22 for wiping the floor surface is detachably installed behind the suction port 5 of the lower case 3.
[0020]
  The raised cloth roller body 22 is fitted and fixed to the both ends of the cylindrical roller 23 made of synthetic resin with the raised cloth 24 wound around the outer periphery, and both ends of the cylindrical roller 23 by press fitting.HighCylinder made of sliding materialShaped kiThe cap 25 and 26 are configured so that the raised fabric 24 can be cleaned by removing it from the lower case 3. The caps 25 and 26 are not only fixed by press-fitting, but can be variously adopted, for example, fixing with an adhesive, fixing with a claw, fixing with a key, fixing under a spline engaged state, and the like.
[0021]
  The caps 25 and 26 are provided with cylindrical projections 25a and 26a at their outer ends, and are directly supported by the lower case 3 via the projections 25a and 26a. Although the protrusions 25a and 26a may be formed in a columnar shape, in consideration of the possibility of water entering the cylindrical roller 23 during cleaning, the protrusions 25a and 26a are formed in a cylindrical shape so that the internal drying can be performed.
[0022]
  By making the protrusions 25a and 26a cylindrical, this can be used positively. That is, water can be supplied into the cylindrical roller 23 from the central holes 25b and 26b of the protrusions 25a and 26a. Therefore, if the cylindrical roller 23 is formed with a large number of fine holes, or the cylindrical roller 23 is formed of a porous body (for example, ceramic) and water is spread on the outer surface, the brushed roller body 22 is wiped with water. It is also possible to have functions. In this case, it is preferable that the center holes 25b and 26b can be closed with an internal insertion type rubber stopper or the like. Accordingly, the brushed fabric roller body 22 can also function as a water tank serving as a water supply source without affecting the sliding surfaces of the protrusions 25a and 26a, and the configuration can be simplified.
[0023]
  On one of the left and right walls facing the caps 25, 26 in the raised cloth roller body installation portion of the lower case 3, a recess 27 is provided for directly supporting the protrusion 25a on the one cap 25 side in a rotatable manner. A hole 28 for directly supporting the protrusion 26a on the side of the other cap 26 in a rotatable manner is formed in the wall. It is preferable to coat the inner surfaces of the recess 27 and the hole 28 with a low friction material (for example, ethylene tetrafluoride resin). Also, for convenience of explanation, one protrusion 25a is inserted into the recess 27 and the other protrusion 26a is inserted into the hole 28. However, the caps 25 and 26 are made of the same constituent members and are attached upside down. There is no problem.
[0024]
  Inside the hole 28, a metal made as a biasing means for preventing the brushed roller body 22 from falling off by directly contacting the protrusion 26 a penetrating the hole 28 and constantly biasing the protrusion 26 a toward the concave portion 27. A leaf spring 29 is provided. The leaf spring 29 is formed in an L shape, and one piece 29a serving as a base end thereof is sandwiched and fixed between the upper case 2 and the lower case 3. That is, the upper case 2 is provided with a pair of bosses 31a and 31b facing each other at a predetermined interval, and a protrusion that can be fitted between the bosses 31a and 31b when the lower case 3 is assembled with the upper case 2. 32 and a long hole 29 b into which the strip protrusion 32 can be fitted is formed in the base end piece 29 a of the leaf spring 29. Therefore, before assembling the upper case 2 and the lower case 3, the other piece 29 c serving as the free end of the leaf spring 29 is disposed so as to hang inward of the hole 28, and the elongated hole 29 b of the leaf spring 29 is formed. If the upper case 2 and the lower case 3 are assembled, the base end piece 29a of the leaf spring 29 can be attached to the lower edge of the bosses 31a and 31b of the upper case 2 and the lower case. 3, and the horizontal free movement of the leaf spring 29 can be restricted by the strip protrusion 32.
[0025]
  In addition, a low friction material (for example, tetrafluoroethylene resin) may be coated on the surface portion of the free end side piece portion 29c of the leaf spring 29 that faces the hole 28, and the surface portion that has penetrated the hole 28 may be coated. A small protrusion that can be fitted into the center hole 26b of the protrusion 26a of the blanket roller body 22 may be formed. By providing such a small protrusion, even if the protrusion 26a is inserted into the hole 28 from various angles when the brushed cloth roller body 22 is attached or detached, the contact position (load application point) of the protrusion 26a on the leaf spring 29 is always maintained. The same position (for example, the center position in the width direction) can be set, and plastic deformation of the leaf spring 29 can be prevented over a long period of time.
[0026]
  In the vacuum cleaner suction tool of the first embodiment, in order to remove the raised cloth roller body 22 from the lower case 3 for cleaning the raised cloth 24, first, the raised cloth roller body 22 in the state of FIG. In this state, the entire raised cloth roller body 22 is moved in the axial direction of the hole 28 against the urging force of the leaf spring 29. By this movement, the protrusion 25a located at the rear end in the movement direction is removed from the concave portion 27 of the lower case 3. From this state, the brushed roller body 22 is tilted downward as shown in FIG. 22 can be detached from the lower case 3.
  The raising of the raised cloth roller body 22 to the lower case 3 after the raising of the raised cloth is performed by a procedure reverse to that described above.
[0027]
  Thus, in the vacuum cleaner suction tool according to the first embodiment, the raised cloth roller body 22 is integrally fixed to the cylindrical roller 23 around which the raised cloth 24 is wound and both ends thereof.KiSince the nap 25 and 26 are configured to directly support the raised cloth roller body 22 on the lower case 3, the structure of the raised cloth roller body 22 can be simplified and the cost can be reduced. The raised cloth roller body 22 itself does not have a relative rotating portion, and problems such as rotation failure due to dust intrusion as in the conventional case can be eliminated. Further, even if sand dust or the like enters the support portion that rotatably supports the brushed roller body 22, that is, the recess 27 or the hole 28 of the lower case 3, the brushed roller body 22 is simply removed from the lower case 3. The user can easily remove it.
[0028]
  In addition, the raised cloth roller body 2Key of 2Protrusions 25a and 26a are provided at the outer ends of the caps 25 and 26, respectively, and a recess 28 for directly supporting the one protrusion 25a in a rotatable manner and a hole 28 for directly supporting the other projection 26a in a rotatable manner in the lower case 3. And a leaf spring 29 for directly urging the protrusion 26a penetrating the hole 28 toward the concave portion 27 is provided inside the hole 28, so that the support portion of the brushed roller body 22 and the stroke adjusting mechanism The configuration is simplified and further cost reduction can be achieved.
[0029]
  Further, the projections 25a and 26a are formed in a cylindrical shape that can be plugged, and the cylindrical roller 23 is provided with a large number of fine holes, or the cylindrical roller 23 is formed of a porous body, so that the brushed roller body 22 has a water wiping function. A water tank function as a water supply source can be provided.
[0030]
  Moreover, since the base end of the leaf spring 29 is configured to be attached by being sandwiched between the upper case 2 and the lower case 3, the attachment work is facilitated and work efficiency can be improved.
[0031]
Embodiment 2. FIG.
  FIG. 4 illustrates the present invention.Second embodimentIt is a longitudinal cross-sectional view of the principal part seen from the front side of the vacuum cleaner suction tool which concerns on this, In the figure, the same code | symbol is attached | subjected to the part same as the thing of the above-mentioned 1st Embodiment (FIG. 1 thru | or FIG. 3). The description is omitted.
[0032]
  The vacuum cleaner suction tool according to the second embodiment has a biasing means for preventing the brushed fabric roller body 22 from falling off the lower case 3, and the suction tool body 21 has a hole in the lower case 3 from the inner surface of the upper case 2. 28 is configured by a tongue-like piece 41 extending inwardly, and other configurations (including a configuration that allows a brushed roller body to be added with a water wiping function and a water tank function) are described above. This is the same as that of the first embodiment.
[0033]
  In the vacuum cleaner suction tool of the second embodiment, since the tongue-like piece 41 serving as the urging means is formed integrally with the upper case 2, a coil spring or the like is used as the stroke adjustment mechanism of the raised cloth roller body 22. It is not necessary to use a separate member, the configuration is further simplified, and further cost reduction can be achieved.
[0034]
  By the way, most of the constituent members of the suction tool main body 21 are manufactured by injection molding. If there is an integral structure on the inner surface of a member manufactured by injection molding, the thickness of the wall of the structure must be less than 60% of the wall thickness of the outer shell side wall due to the tensile stress during solidification. A shrinkage occurs in the root portion 2a of the structure portion on the shell surface. Therefore, it is desirable in design that the thickness t of the tongue-like piece 41 extending from the inner surface of the upper case 2 is made as thin as possible to the thickness T on the outer shell side of the upper case 2.
[0035]
  The problem of this shrinkage is that, as shown by a broken line in FIG. 4, a bulging portion 4a is provided on the tongue-like piece facing surface portion of the bumper 4 made of a soft material interposed between the upper case 2 and the lower case 3 of the suction tool body 21. By holding the back side of the tongue-like piece 41 with the bulging part 4a, the stress applied to the root part of the tongue-like piece 41 is alleviated, thereby reducing the thickness t of the tongue-like piece 41, This can be avoided in advance.
[0036]
  In the second embodiment, as in the first embodiment, the surface portion of the tongue-shaped piece 41 facing the hole 28 at the free end is coated with a low friction material (for example, ethylene tetrafluoride resin). Alternatively, a small protrusion that can be fitted into the center hole 26b of the protrusion 26a of the raised fabric roller body 22 that has penetrated the hole 28 may be formed on the surface portion.
[0037]
Embodiment 3. FIG.
  FIG. 5 illustrates the present invention.Third embodimentThe longitudinal section of the principal part seen from the front side of the suction tool for vacuum cleaners which concerns on FIG. 6, FIG. 6 is the bottom view, In each figure, it is the same as the thing of above-mentioned 1st Embodiment (FIGS. 1-3). Parts are denoted by the same reference numerals, and description thereof is omitted.
[0038]
  The suction tool for the vacuum cleaner according to the third embodiment has a biasing means for preventing the brushed cloth roller body 22 from dropping from the lower case 3, and the inner side of the hole 28 from the inner surface of the lower case 3 of the suction tool body 21. And a slit 52 on both sides of the base of the tongue-like piece in the lower case 3, and other configurations (the wiped cloth roller body has a water wiping function and a water tank function). (Including a configuration that can be added) is the same as that of the first embodiment.
[0039]
  In the vacuum cleaner suction tool of the third embodiment, since the tongue-like piece 51 serving as the biasing means is formed integrally with the lower case 3, the raised cloth roller is the same as that of the second embodiment. It is not necessary to use a separate member such as a coil spring for the stroke adjusting mechanism of the body 22, the configuration is simplified, and the cost can be reduced.
[0040]
  Further, since the slits 52 are formed on both sides of the base of the tongue-like piece in the lower case 3, even when the protruding dimension from the lower case 3 of the tongue-like piece 51 is short, the amount of displacement that can be elastically deformed can be increased.
[0041]
  In the third embodiment, as in the second embodiment described above, a low friction material (for example, a tetrafluoroethylene resin) is coated on the surface portion of the tongue-shaped piece 51 facing the hole 28 at the free end. Alternatively, a small protrusion that can be fitted into the center hole 26b of the protrusion 26a of the raised fabric roller body 22 that has penetrated the hole 28 may be formed on the surface portion.
[0042]
Embodiment 4 FIG.
  FIG. 7 illustrates the present invention.Fourth embodimentIt is a longitudinal cross-sectional view of the principal part seen from the front side of the vacuum cleaner suction tool which concerns on this, In the figure, the same code | symbol is attached | subjected to the part same as the thing of the above-mentioned 1st Embodiment (FIG. 1 thru | or FIG. 3). The description is omitted.
[0043]
  In the vacuum cleaner suction tool of the fourth embodiment, biasing means for preventing the brushed fabric roller body 22 from falling off the lower case 3 is interposed between the upper case 2 and the lower case 3 of the suction tool body 21. It is composed of a bulging portion 61 that extends from the bumper 4 made of a soft material and fills the inner space of the hole 28. Other configurations (addition of a water wiping function and a water tank function to the raised cloth roller body) Including the configuration that enables the above-described configuration is the same as that of the first embodiment described above.
[0044]
  In the vacuum cleaner suction tool according to the fourth embodiment, the bulging portion 61 serving as the biasing means is formed to extend from the bumper 4 made of a soft material. Similarly to the embodiment, it is not necessary to use a separate member such as a coil spring for the stroke adjusting mechanism of the raised cloth roller body 22, the configuration is simplified, and the cost can be reduced.
[0045]
  Further, since the bulging portion 61 is made of a soft material, that is, an elastic body, the amount of displacement that can be elastically deformed can be further increased, and the axial dimension of the support portion of the raised cloth roller body 22 can be increased accordingly. Thus, the mounted state of the brushed fabric roller body 22 is stabilized, and the stability when using the vacuum cleaner is improved.
[0046]
  In the fourth embodiment as well, a low friction material (for example, tetrafluoroethylene resin) may be coated on a portion of the bulging portion 61 of the bumper 4 that faces the hole 28.
[0047]
Embodiment 5. FIG.
  FIG. 8 illustrates the present invention.Fifth embodimentFIG. 9 is a longitudinal sectional view as seen from the front side of the suction tool for a vacuum cleaner according to the present invention, and FIG. 9 is a longitudinal sectional view as seen from the front side. In each figure, the first embodiment described above (FIGS. 1 to 3). ) And the same parts as those of the second embodiment (FIG. 4) are denoted by the same reference numerals, and description thereof is omitted.
[0048]
  The vacuum cleaner suction tool according to the fifth embodiment moves in one direction (here, forward) in the rotational direction of the brushed roller body 22 toward the hole 28 through which the protrusion 26a of the brushed roller body 22 passes. A braking means 71 for limiting is provided so that a wiping function can be obtained.
[0049]
  More specifically, the braking means 71 is a raised cloth roller body 22 in the lower case 3.No kiA flat portion 72 provided on a part of the wall surface facing the peripheral surface 26c of the cap 26 to form a wedge-shaped space between the cap peripheral surface 26c, and the flat portion 72 and the cap so as to be able to bite into the wedge-shaped space by a predetermined amount. The brake member 73 is formed of a soft body that is interposed between the peripheral surface 26c and permits rotation in a restricting direction (forward direction) when a load caused by floor resistance acts more than specified. Yes.
[0050]
  The braking member 73 is composed of a piece-shaped braking wheel 75 having a central shaft 74 and is disposed on the horizontal axis. The central shaft 74 and the brake wheel 75 may be integrated or may be configured separately.
[0051]
  The lower case 3 is formed with a hole 76 that allows the wheel portion of the brake wheel 75 to be inserted into the wedge-shaped space, and an edge portion 76a of the hole 76 is configured as a means for restricting the amount of engagement of the brake wheel.
[0052]
  Further, the upper case 2 is provided with a pair of ribs 77 that hang down the amount of upward movement of the brake wheel 75. Other configurations (including a configuration that allows the brushed roller body to be added with a water wiping function and a water tank function) are the same as those in the first embodiment.
[0053]
  In the vacuum cleaner suction tool of the fifth embodiment, for example, vinyl chloride, synthetic rubber, silicon rubber, or the like can be used as the soft member usable for the brake member 73, particularly the brake wheel 75. In any case, it is desirable that the hardness is 50 to 80 degrees and the surface friction coefficient (dynamic friction coefficient) μk is 0.3 to 0.9. The reasons for limiting the numerical values of the hardness and surface friction coefficient of the soft body used for the brake wheel 75 are as follows.
[0054]
  That is, when the hardness is 50 degrees or less, the deformation (indicated by a one-dot chain line in FIG. 8) when the braking wheel 75 bites into the wedge-shaped space when the brushed fabric roller body 22 moves forward becomes large, and the braking wheel 75 has a hole 76. It protrudes more than necessary from the edge portion 76a into the wedge-shaped space, and there is a tendency that the raised fabric roller body 22 is completely stopped. When the raised cloth roller body 22 is moved backward from this state, the cap 26 rotates in a direction to release the braking wheel 75 from the position in the wedge-shaped space, so that the biting state is released, and the braking wheel 75 is shown by a solid line in FIG. If the hardness is too low, the amount of protrusion into the wedge-shaped space due to deformation becomes too large, and even if the raised roller body 22 is moved backward, the biting state is not released and the raised roller body 22 is released. Cannot get out of the stop state.
[0055]
  When the hardness is 80 degrees or more, the amount of deformation when the braking wheel 75 bites into the wedge-shaped space when the brushed cloth roller body 22 moves forward becomes small, the necessary biting amount cannot be obtained, and the wedge effect tends not to work. . If the hardness is too high, the wedge effect does not work and the wiping function cannot be obtained.
[0056]
  When the surface friction coefficient μk of the brake wheel 75 is 0.3 or less, the deformation amount when the brake wheel 75 bites into the wedge-shaped space when the brushed roller body 22 moves forward is optimal (or slightly larger than that). Even so, there is a tendency for slippage between the braking wheel 75 and the flat portion 72. If the surface friction coefficient is too low, the wedge effect does not work and the wiping function cannot be obtained.
[0057]
  When the surface friction coefficient μk of the braking wheel 75 is 0.9 or more, the deformation amount (hardness) when the braking wheel 75 bites into the wedge-shaped space when the brushed fabric roller body 22 moves forward is optimal (or slightly smaller than that) ) Is set, the tendency to get caught by friction between the brake wheel 75 and the flat portion 72 before reaching the required deformation amount. In a severe case, the catching and releasing are repeated in small increments. appear. If the surface friction coefficient is too high, a wedge effect will appear immediately when the brushed roller body 22 moves forward, and the biting state will not be released even if the brushed roller body 22 is moved backward, so that the brushed roller body 22 cannot escape from the stopped state. In addition to disappearing, there is a risk of damaging the brake wheel 75, the cap 26 or the flat portion 72.
[0058]
  The reason why the braking means 71 is arranged on the side of the hole 28 through which the protrusion 26a of the raised cloth roller body 22 passes is as follows. As described above, most of the constituent members of the suction tool main body 21 are manufactured by injection molding. Therefore, the peripheral surfaces 25c and 26c of the caps 25 and 26 are formed in a taper that is slightly reduced in diameter toward the protrusion-side end. Accordingly, the force when the wedge effect is exerted by the braking means 71 acts on the cap 26 as a component force in the axial direction of the recess 27 (the direction of attaching the raised cloth roller body). If the braking means 71 is arranged on the concave portion 27 side where the protrusion 25a of the raised cloth roller body 22 is supported, the acting direction of the component force is the direction of the hole 28 (the direction in which the raised cloth roller body is removed), and the raised cloth The roller body 22 may be detached from the lower case 3 every time it is wiped and cleaned. As in the fifth embodiment, by arranging the braking means 71 on the side of the hole 28 through which the protrusion 26a of the raised cloth roller body 22 passes, the state of attachment of the raised cloth roller body 22 to the lower case 3 is stabilized.
[0059]
  The edge portion 76a of the hole 76 provided in the lower case 3 is engaged with the central shaft 74 of the braking member 73, thereby limiting the amount of protrusion of the wheel portion of the braking wheel 75 into the wedge-shaped space.
[0060]
  Further, the pair of ribs 77 provided in the upper case 2 is more than necessary for the central shaft 74 of the braking member 73 at the lower edge of the rib even when the braking member 73 may be flipped up when the brushed roller body 22 moves backward. By suppressing the upward movement, the brake wheel 75 of the brake member 73 is prevented from falling out of the hole 76 portion.
[0061]
  Therefore, in the vacuum cleaner suction tool of the fifth embodiment, when cleaning, the braking wheel 75 bites into the wedge-shaped space during advance, and the movement of the raised cloth roller body 22 is restricted to have a wiping function. In addition, the brake wheel 75 is released from the wedge-shaped space during reverse travel, and the raised cloth roller body 22 rotates. For this reason, the raised cloth roller body 22 does not contact at one place, and the contact surface is moved each time the forward / backward movement is repeated, so that the one-side reduction is reduced.
[0062]
  Further, since the hardness and the surface friction coefficient of the braking member 73 are limited to predetermined ranges, and the amount of protrusion into the wedge-shaped space is also regulated, even when cleaning the surface to be cleaned with low frictional resistance, the raised cloth roller The movement of the body 22 is not completely stopped, the brushed cloth roller body 22 rotates slowly, and when the surface to be cleaned having a large frictional resistance is cleaned, the brushed cloth roller body 22 rotates slightly faster than the above. For this reason, the problem of one-side reduction is completely solved.
[0063]
  Further, the braking member 73 is formed from a piece-shaped braking wheel 75 having a central shaft 74, and the wheel portion of the braking wheel 75 is inserted into the wedge-shaped space from the hole 76 in the lower case 3, Since the lower case 3 having a pair of ribs 77 that limit the amount of movement in the direction is attached to the upper case 2 only, the structure of the braking means 71 that suppresses the free rotation of the raised cloth roller body 22 is simple. The cost can be reduced accordingly.
[0064]
Embodiment 6. FIG.
  FIG. 10 shows the present invention.Sixth embodimentIt is the longitudinal cross-sectional view seen from the front side of the suction tool for vacuum cleaners which concerns on the figure, and the thing of above-mentioned 1st Embodiment (FIGS. 1 thru | or 3) and 5th Embodiment (FIGS. 8 and 9) in the figure The same parts are denoted by the same reference numerals and the description thereof is omitted.
[0065]
  The vacuum cleaner suction tool according to the sixth embodiment has all the functions of the fifth embodiment. In the sixth embodiment, the brushed fabric roller body 22No kiTapers 25d and 26d are formed on the peripheral surfaces of the caps 25 and 26 so as to be slightly reduced in diameter toward the projection-side ends, respectively, and other configurations (the wiped cloth roller body has a water wiping function and a water tank function). (Including a configuration that can be added) is the same as that of the first embodiment.
[0066]
  In the vacuum cleaner suction tool of the sixth embodiment, the braking means 71 is disposed on the side of the hole 28 through which the protrusion 26a of the brushed cloth roller body 22 penetrates, as in the fifth embodiment, and the cap. Tapers 25d and 26d are positively formed on the peripheral surfaces of 25 and 26, respectively. Therefore, when the wedge effect is applied by the braking means 71, the force is applied to the cap 26.Brushed clothIt acts reliably in the axial direction of the concave portion 27 that is the roller body mounting direction. For this reason, the attachment state to the lower case 3 of the brushed fabric roller body 22 becomes more stable.
[0067]
Embodiment 7. FIG.
  FIG. 11 shows the present invention.Seventh embodimentFIG. 12 is a longitudinal sectional view showing a different aspect of the braking means of the suction tool for a vacuum cleaner according to the present invention, and FIG. Thru | or FIG. 3) and 6th Embodiment (FIG. 10), the same code | symbol is attached | subjected to the same or same function part, and the description is abbreviate | omitted. Here, FIG. 10 will be referred to for description.
[0068]
  The suction tool for a vacuum cleaner according to the seventh embodiment is provided on the side of the hole 28 through which the protrusion 26a of the raised cloth roller body 22 passes, and is in one direction of rotation of the raised cloth roller body 22 (here, when moving forward). The braking means 81 that restricts the movement of the raised cloth roller body 22 in the lower case 3No kiA flat portion 72 provided on a part of the wall surface facing the taper (circumferential surface) 26d of the cap 26 and forming a wedge-shaped space between the cap peripheral surface 26c and a part of the inner surface of the bumper 4 made of a soft material. An L-shaped arm 83 extending into the wedge-shaped space through the hole 82 of the lower case 3 and a tip of the arm 83 so as to be able to bite into the wedge-shaped space by a predetermined amount. It is composed of a spherical bulging portion 84 serving as a braking member that allows rotation in the forward direction when acted. Other configurations (including a configuration that allows the brushed roller body to be added with a water wiping function and a water tank function) are the same as those in the first embodiment.
[0069]
  In the vacuum cleaner suction tool of the seventh embodiment, the bumper 4, that is, the bulging portion 84, has a hardness of 50 to 80 degrees and a surface friction coefficient (dynamic friction coefficient) μk similar to those of the fifth embodiment. A soft body of 0.3 to 0.9 (vinyl chloride, synthetic rubber, silicon rubber, etc.) was used. The reason for limiting the numerical values of the hardness and the surface friction coefficient of the soft body used for the bulging portion 83 is as described in the fifth embodiment, and the description thereof is omitted here.
[0070]
  In the vacuum cleaner suction tool of the seventh embodiment, when cleaning, the bulging portion 84 is moved into the wedge-shaped space by the frictional force between the taper 26d of the cap 26 and the flat surface portion 72 forming the wedge-shaped space when moving forward. The arm 83 is extended by being pulled, and the bulging portion 84 bites into the wedge-shaped space by a predetermined amount (FIG. 12), and the wiping function is obtained by restricting the movement of the brushed fabric roller body 22. The brushed roller body 22 is rotated by being released from the wedge-shaped space. For this reason, the raised cloth roller body 22 does not contact at one place, and the contact surface is moved each time the forward / backward movement is repeated, so that the one-side reduction is reduced.
[0071]
  Further, the hardness and surface friction coefficient of the braking member, that is, the bulging portion 84 are limited to a predetermined range, and the amount of protrusion into the wedge-shaped space is also regulated by the arm 83, so that the surface to be cleaned with low frictional resistance is cleaned. Even when the brushed fabric roller body 22 does not stop completely, the brushed fabric roller body 22 rotates slowly and cleans the surface to be cleaned having a large frictional resistance. Also rotates slightly faster. For this reason, the problem of one-side reduction is completely solved.
[0072]
  Further, since the braking member is formed from the bulging portion 84 integral with the bumper 4, the configuration of the braking means 81 for suppressing the free rotation of the raised cloth roller body 22 is further simplified, and the cost can be further reduced. it can.
[0073]
Embodiment 8. FIG.
  FIG. 13 shows the present invention.Eighth embodimentIt is a longitudinal cross-sectional view of the principal part seen from the side surface side of the suction tool for vacuum cleaners which concerns on this, In the figure, 1st Embodiment (FIGS. 1 thru | or FIG. 3) and 5th Embodiment (FIGS. 8 and 9) mentioned above. The same reference numerals are given to the same or the same function parts as those in FIG. Here, FIG. 9 will be referred to for description.
[0074]
  The vacuum cleaner suction tool according to the eighth embodiment is provided on the side of the hole 28 through which the protrusion 26a of the raised cloth roller body 22 passes, and is in one direction of rotation of the raised cloth roller body 22 (here, when moving forward). The braking means 91 for restricting the movement of the raised cloth roller body 22No kiA basically one-way clutch comprising a claw wheel 92 formed on the peripheral surface of the cap and a reverse rotation stopper piece 93 that hangs down from the upper case 2 and has a tip that passes through the hole 95 of the lower case 3 and meshes with the claw wheel 92. It is composed.
[0075]
  In addition, the tooth surface with which the tip of the reverse rotation stopper piece of the claw wheel 92 abuts is formed on a slant surface 92a having a predetermined angle inclined in the normal rotation direction of the claw wheel (clockwise in this case), and a load due to floor resistance is defined. When acting as described above, the tip of the reverse rotation stop piece 93 is configured to allow rotation in the limiting direction (here, counterclockwise) beyond the inclined surface 92a.
[0076]
  Furthermore, the back surface side of the reverse rotation insulator piece 93 is held using the inner surface protrusion 74 of the bumper 4 to relieve stress applied to the root portion of the reverse rotation insulator piece 93, and thereby the reverse rotation insulator piece 93. In order to avoid the problem of shrinkage in advance. Other configurations (including a configuration that allows the brushed roller body to be added with a water wiping function and a water tank function) are the same as those in the first embodiment.
[0077]
  In the vacuum cleaner suction tool of the eighth embodiment, when cleaning, the tip of the reverse rotation stopper piece 93 meshes with the claw wheel 92 during advance, and the wiping function is limited by restricting the movement of the brushed cloth roller body 22. In addition, during reverse travel, the meshing between the reverse rotation stopper piece 93 and the claw wheel 92 is released, the reverse rotation lever piece 93 slides on the tooth surface of the hook wheel 92, and the raised cloth roller body 22 rotates. For this reason, the raised cloth roller body 22 does not contact at one place, and the contact surface is moved each time the forward / backward movement is repeated, so that the one-side reduction is reduced.
[0078]
  In addition, the tooth surface with which the tip of the reverse rotation stop lever piece of the claw wheel 92 abuts is formed on the slope 92a inclined in the normal rotation direction of the claw wheel, and the reverse rotation is stopped when a load due to floor resistance acts more than specified. Since the tip of the insulator piece 93 is configured to allow the rotation in the restricting direction beyond the inclined surface 92a, the brushed roller body 22 is completely moved even when cleaning the surface to be cleaned with low frictional resistance. The brushed fabric roller body 22 rotates intermittently slowly without stopping, and when the surface to be cleaned having a high frictional resistance is cleaned, the brushed fabric roller body 22 rotates slightly faster than the above. For this reason, the problem of one-side reduction is completely solved.
[0079]
Embodiment 9. FIG.
  FIG. 14 shows the present invention.Ninth embodimentIt is a longitudinal cross-sectional view of the principal part seen from the front side of the vacuum cleaner suction tool which concerns on this, In the figure 1st Embodiment (FIGS. 1-3) mentioned above, 3rd Embodiment (FIGS. 5 and 6) And the same code | symbol is attached | subjected to the same or same function part as the thing of 5th Embodiment (FIG.8 and FIG.9), and the description is abbreviate | omitted. Note that FIG. 9 is referred to in this description as well.
[0080]
  The vacuum cleaner suction tool of the ninth embodiment has all the functions of the eighth embodiment, but here, the direction in which the movement of the raised cloth roller body 22 is restricted is the reverse direction. In this way, the pawl wheel 92 and the reverse rotation stop piece 93 are assembled together, and the reverse rotation stop piece 93 is integrated with the externally operable slider 101 having an axial stroke that can be disengaged from the hook wheel 92. . Note that reference numeral 102 in the figure is a long hole provided in the upper case 2, and the operation portion 101 a of the slider 101 is inserted into the long hole 102 to enable external operation. Other configurations (including a configuration that allows the brushed roller body to be added with a water wiping function and a water tank function) are the same as those in the first and third embodiments described above.
[0081]
  In the vacuum cleaner suction tool of the eighth embodiment, when cleaning, the tip of the reverse rotation stopper piece 93 meshes with the claw wheel 92 during reverse travel, and the movement of the brushed roller body 22 is restricted to have a wiping function. Further, at the time of reverse travel, the meshing between the reverse rotation stopper piece 93 and the claw wheel 92 is released, the reverse rotation stopper piece 93 slides on the tooth surface of the hook wheel 92, and the raised cloth roller body 22 rotates. For this reason, the raised cloth roller body 22 does not contact at one place, and the contact surface is moved each time the forward / backward movement is repeated, so that the one-side reduction is reduced. In this way, the brushed cloth roller body 22 can be disposed forward by allowing the wiping function to be obtained during reverse travel.
[0082]
  In addition, when the direction in which the tip of the locking lever piece 93 meshes with the claw wheel 92 is reversed from that of the above-described eighth embodiment, the tooth surface with which the tip of the reverse rotation locking piece piece of the claw wheel 92 abuts is obtained. When the load due to the floor resistance acts more than specified, the tip of the reverse rotation stopper piece 93 exceeds the slope 92a and rotates in the limiting direction. Allow movement. As a result, even when cleaning the surface to be cleaned having a low frictional resistance, the movement of the brushed roller body 22 is not stopped completely, and the brushed roller body 22 rotates intermittently slowly, and the surface having a high frictional resistance is thus prevented. When cleaning the cleaning surface, the raised cloth roller body 22 rotates slightly faster than the above. For this reason, the problem of one-side reduction is completely solved.
[0083]
  Further, since the reverse rotation insulator piece 93 is integrated with the externally operable slider 101 having an axial stroke that can release the engagement with the claw wheel 92, the reverse rotation insulator piece 93 is operated by operating the slider 101. And the ratchet wheel 92 can be released. Therefore, when the carpet surface having a large frictional resistance is cleaned, the free rotation of the brushed roller body 22 can be allowed by releasing the engagement between the reverse rotation stopper piece 93 and the claw wheel 92, and the reverse rotation. The sound generated during the engagement rotation between the stop piece 93 and the claw wheel 92 can be eliminated.
[0084]
【The invention's effect】
  As described above, according to the invention of claim 1,A large number of micropores or a porous bodyCylindrical roller wrapped with brushed clothAnd soIntegrated at both endsAnd a cylindrical projection that can be plugged at the outer end of each cap, and the suction tool body has a recess for supporting one projection and a hole for supporting the other projection. And an urging means for urging the projection penetrating the hole directly toward the concave portion is provided inside the hole.Therefore, the structure of the brushed cloth roller body is simplified and the cost can be reduced. Further, the raised cloth roller body itself does not have a relative rotation portion, and problems such as rotation failure due to dust intrusion as in the conventional case can be eliminated. Furthermore, even if sand dust or the like enters the support portion that rotatably supports the brushed roller body, the user can easily remove it by simply removing the brushed roller body from the suction tool body.Further, the structure of the support portion of the raised cloth roller body and the stroke adjusting mechanism is simplified, and further cost reduction can be achieved. Further, the raised cloth roller body can have a water wiping function and a water tank function as a water supply source.
[0085]
  According to the invention of claim 2,The urging means is composed of a leaf spring in which the base end is held between the upper case and the lower case forming the suction tool main body, and the free end extends inward of the hole. Work efficiency can be improved.
[0086]
  According to the invention of claim 3,Since the biasing means is composed of a tongue-shaped piece extending inward of the hole from the upper case or the lower case forming the suction tool main body, a separate member such as a coil spring is used for the stroke adjusting mechanism of the raised cloth roller body. This eliminates the need to use the device, further simplifies the configuration, and further reduces costs.
[0087]
  According to the invention of claim 4,Braking means for restricting movement in one direction of rotation of the brushed cloth roller body is provided on the hole side through which the protrusion of the brushed cloth roller body passes, and the braking means is arranged around the cap of the brushed cloth roller body in the suction tool body. A flat surface portion that forms a wedge-shaped space with the surface, and is interposed between the flat surface portion and the peripheral surface of the cap so as to be able to bite into the wedge-shaped space by a predetermined amount. Since it is composed of a braking member made of a soft body that allows rotation in the restricting direction when the accompanying load acts more than specified, it can have a wiping function and the force of when the wedge effect is applied The component force can be applied in the direction in which the raised cloth roller body is attached, the attached state of the raised cloth roller body can be stabilized, and the problem of one-side reduction of the raised cloth roller body can be completely solved.
[0088]
  According to the invention of claim 5,The brake member is composed of a piece-shaped brake wheel having a central axis and is arranged on the horizontal axis, and a hole is formed in the lower case so that the ring portion of the brake wheel can be inserted into the wedge-shaped space. Since the portion is configured as a braking wheel biting amount limiting means, the configuration of the braking means for suppressing the free rotation of the raised cloth roller body is simplified, and the cost can be reduced correspondingly.
[0089]
  According to the invention of claim 6,Since the rib that restricts the upward movement amount of the braking wheel is hung from the upper case, even if the braking wheel may jump up, the lower edge of the rib keeps the upward movement of the braking wheel more than necessary. It is possible to prevent the brake wheel from falling out of the hole.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a vacuum cleaner suction tool according to a first embodiment of the present invention as seen from the front side.
FIG. 2 is an explanatory diagram of a procedure for attaching and detaching a raised cloth roller body of the vacuum cleaner suction tool according to the first embodiment.
FIG. 3 is a perspective view showing an external appearance of the vacuum cleaner suction tool according to the first embodiment.
FIG. 4 is a longitudinal sectional view of a main part viewed from the front side of a vacuum cleaner suction tool according to a second embodiment of the present invention.
FIG. 5 is a longitudinal sectional view of a main part viewed from the front side of a vacuum cleaner suction tool according to a third embodiment of the present invention.
FIG. 6 is a bottom view of the vacuum cleaner suction tool according to the third embodiment.
FIG. 7 is a longitudinal sectional view of a main part viewed from the front side of a vacuum cleaner suction tool according to a fourth embodiment of the present invention.
FIG. 8 is a longitudinal sectional view of a main part viewed from a side surface side of a vacuum cleaner suction tool according to a fifth embodiment of the present invention.
FIG. 9 is a longitudinal sectional view of a vacuum cleaner suction tool according to a fifth embodiment as viewed from the front side.
FIG. 10 is a longitudinal sectional view of a vacuum cleaner suction tool according to a sixth embodiment of the present invention as seen from the front side.
FIG. 11 is a longitudinal sectional view of a main part viewed from a side surface of a vacuum cleaner suction tool according to a seventh embodiment of the present invention.
FIG. 12 is a longitudinal sectional view showing different aspects of the braking means of the vacuum cleaner suction tool according to the seventh embodiment.
FIG. 13 is a longitudinal sectional view of a main part when viewed from a side surface of a vacuum cleaner suction tool according to an eighth embodiment of the present invention.
FIG. 14 is a longitudinal sectional view of a main part when viewed from the front side of a vacuum cleaner suction tool according to a ninth embodiment of the present invention.
FIG. 15 is a longitudinal sectional view of a conventional vacuum cleaner suction tool.
FIG. 16 is an exploded perspective view of a main part of a conventional vacuum cleaner suction tool.
FIG. 17 is a longitudinal sectional view of a main part of a conventional vacuum cleaner suction tool.
[Explanation of symbols]
  2 Upper case, 3 Lower case, 4 Bumper, 21 Suction tool body, 22 Brushed cloth roller body, 23 Cylindrical roller, 24 Brushed cloth, 25, 26,25a, 26a protrusion, 25b, 26b center hole of protrusion, 26c cap peripheral surface (cap(Peripheral surface), 27 recess, 28 hole, 29 leaf spring (biasing means), 41, 51 tongue piece (biasing means), 4a bulging part (tongue piece holding part by bumper), 52 slit, 61 bulging Protruding part (biasing means), 71, 81, 91 Braking means, 72 Planar part, 73 Braking member, 74 Center shaft, 75 Braking wheel, 76 hole, 76a Hole edge (biting amount limiting means), 77 Rib ( (Upward movement amount limiting rib), 83 arms, 84 bulging part (braking member), 25d, 26d taper, 92 claw wheel, 92a slope, 93 reverse rotation insulator piece, 101 slider, 101a operation part.

Claims (6)

床面などを拭くための起毛布ローラ体を備えた電気掃除機用吸込具において、
前記起毛布ローラ体を、多数の微細孔が設けられあるいは多孔体からなり起毛布を巻き付けた円筒ローラと、その両端部に一体化された円筒状のキャップとから形成するとともに、
各前記キャップの外端に、それぞれ栓塞可能な円筒状の突起を設け、
吸込具本体には、一方の前記突起を支承する凹部と他方の突起を支承する穴を形成し、かつ該穴の内方に、該穴を貫通した前記突起を前記凹部側へ直接付勢する付勢手段を設けたことを特徴とする電気掃除機用吸込具。In the vacuum cleaner suction tool equipped with a brushed cloth roller body for wiping the floor, etc.
The raised fabric roller body, thereby forming a cylindrical roller wrapped with raised fabric consists of a number of micropores are provided or a porous body, a cylindrical cap which is integrated at both ends of its,
Cylindrical projections that can be plugged are provided on the outer ends of the caps,
The suction tool main body is formed with a recess for supporting one of the protrusions and a hole for supporting the other protrusion, and the protrusion penetrating the hole is directly urged toward the recess inside the hole. A vacuum cleaner suction tool characterized in that an urging means is provided . 付勢手段は、吸込具本体を形成する上ケースと下ケースの間に基端が挾持されて自由端が穴の内方に延出する板ばねから成ることを特徴とする請求項１記載の電気掃除機用吸込具。The biasing means of claim 1, wherein the free end is pinched base end between the case and the lower case for the formation of the suction device body, characterized by comprising a leaf spring extending inwardly of the hole Vacuum cleaner suction tool. 付勢手段は、吸込具本体を形成する上ケースまたは下ケースから穴の内方に延出する舌状片から成ることを特徴とする請求項１記載の電気掃除機用吸込具。2. The vacuum cleaner suction tool according to claim 1 , wherein the urging means comprises a tongue-shaped piece extending inward of the hole from the upper case or the lower case forming the suction tool main body. 起毛布ローラ体の突起が貫通する穴側に、該起毛布ローラ体の回転方向の一方向の動きを制限する制動手段を設け、
前記制動手段は、吸込具本体における起毛布ローラ体のキャップ周面との間で楔状空間を形成する平面部と、該楔状空間内に所定量食い込み可能に前記平面部と前記キャップ周面との間に介在設置され、床面抵抗に伴う負荷が規定以上に作用した場合に、制限方向の回動を許容する軟質体からなる制動部材とから構成してなる請求項１乃至請求項３のいずれかに記載の電気掃除機用吸込具。 Provided on the side of the hole through which the protrusion of the raised cloth roller body passes is a braking means for restricting the movement of the raised cloth roller body in one direction of rotation,
The braking means includes a flat portion that forms a wedge-shaped space with the cap peripheral surface of the raised cloth roller body in the suction tool body, and a predetermined amount of the flat portion and the cap peripheral surface that can bite into the wedge-shaped space. Any one of Claims 1 to 3, comprising a braking member made of a soft body that is interposed between them and that allows rotation in a restricting direction when a load caused by floor resistance acts above a specified level. The vacuum cleaner suction tool according to claim 1. 制動部材を、中心軸を有するコマ形の制動輪から構成して横軸配置するとともに、下ケースに、該制動輪の輪部を楔状空間内に挿入可能とする孔を形成し、該孔の縁部を制動輪食い込み量の制限手段として構成したことを特徴とする請求項４記載の電気掃除機用吸込具。The brake member is composed of a piece-shaped brake wheel having a central axis and is arranged in the horizontal axis, and a hole is formed in the lower case so that the ring portion of the brake wheel can be inserted into the wedge-shaped space. 5. The vacuum cleaner suction tool according to claim 4, wherein the edge portion is configured as means for restricting the amount of biting of the brake wheel. 制動輪の上方向移動量を制限するリブを上ケースより垂下して設けたことを特徴とする請求項５記載の電気掃除機用吸込具。6. The vacuum cleaner suction tool according to claim 5, wherein a rib for restricting the upward movement amount of the brake wheel is provided so as to hang from the upper case.
JP26476198A 1998-09-18 1998-09-18 Vacuum cleaner suction tool Expired - Fee Related JP3777493B2 (en)

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JP26476198A JP3777493B2 (en) 1998-09-18 1998-09-18 Vacuum cleaner suction tool
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CNB981255434A CN1146348C (en) 1998-09-18 1998-12-14 Nozzle for electric suction cleaner

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CN1146348C (en) 2004-04-21

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