JP4612156B2

JP4612156B2 - Vacuum cleaner and its suction port

Info

Publication number: JP4612156B2
Application number: JP2000190093A
Authority: JP
Inventors: 篤至森下
Original assignee: Toshiba Corp; Toshiba Consumer Electronics Holdings Corp; Toshiba Home Appliances Corp
Current assignee: Toshiba Corp; Toshiba Lifestyle Products and Services Corp
Priority date: 2000-06-23
Filing date: 2000-06-23
Publication date: 2011-01-12
Anticipated expiration: 2020-06-23
Also published as: JP2002000512A

Description

【０００１】
【発明の属する技術分野】
本発明は、下面に吸込口を開口するとともに被掃除面に交差する面に当接することにより開口する吸塵口を有した電気掃除機の吸込口体およびこの電気掃除機の吸込口体を備えた電気掃除機に関する。
【０００２】
【従来の技術】
従来、この種の電気掃除機の吸込口体として、例えば実公昭６１−３７３９４号公報および特開平１−１８１８２６号公報などに記載の各種構成が知られている。
【０００３】
そして、実公昭６１−３７３９４号公報に記載のものは、被掃除面である床面と対向する下面に空気とともに塵埃を吸い込む吸込口を開口した吸込室を走行方向の前側に区画形成するケース体を備えている。このケース体の前側には、吸込口に亘って吸塵口が切欠形成されている。また、ケース体の少なくとも前面を含む周面に取り付けられるバンパには、吸塵口を覆い下端縁が自由端の舌片状のシールリップが一体的に設けられているとともに、このシールリップの前面にはバンパを含むケース体の最外周より先端が外方に突出する突起部が設けられ、家具や壁面に突起部が当接することによりシールリップが弾性変形して吸塵口を開口させ、家具や壁際の塵埃を吸塵口から吸塵する構成が採られている。
【０００４】
また、特開平１−１８１８２６号公報に記載のものは、被掃除面である床面と対向する下面に吸込口を開口した吸込室を走行方向の前側に区画形成するケース体を備えている。そして、ケース体の前側下面には、走行方向の前方および下方に向けて開口し吸込口に連通する凹部が設けられている。また、ケース体には、前面に位置して先端部が進退可能にスプリングなどの付勢手段により突出する突出部が配設されている。さらに、ケース体には、凹部の前側を覆って位置する舌片状のシールリップ部を備え、突出部が壁面や家具に当接することにより後退する突出部により回動して、シールリップ部にて覆う凹部の前側を開口する開閉体が配設され、この開閉体の回動により開口する凹部の前側から吸込口に吸塵する構成が採られている。
【０００５】
【発明が解決しようとする課題】
しかしながら、上記実公昭６１−３７３９４号公報および特開平１−１８１８２６号公報などに記載の従来の電気掃除機の吸込口体では、家具や壁面に当接した際に開口される開口部分の下端は開放するので、例えば毛足の長い絨毯などを掃除する際に、絨毯の毛が開口に入り込んで開口を閉塞し、十分に家具や壁際の塵埃を吸塵できないおそれがある。
【０００６】
本発明は、上記問題点に鑑みなされたもので、簡単な構成で確実に吸塵口の開口状態を確保して効率よく吸塵できる電気掃除機およびその吸込口体を提供することを目的とする。
【０００７】
【課題を解決するための手段】
請求項１記載の電気掃除機の吸込口体は、被掃除面と対向する下面に吸込口を開口する吸込室を有し、周面に緩衝体を有するケース体と、このケース体の周面に前記吸込室に連通して設けられ外周方向に向けて開口する複数の吸塵口と、前記ケース体に設けられ前記各吸塵口の開口下縁をそれぞれ構成し下面に被掃除面と略平行に対向する走行面が設けられ、前記緩衝体よりも前記ケース体の内方に端部が位置する板状の複数の滑動部と、前記滑動部よりも前記ケース体の内方の位置にて前記吸塵口に取り付けられた開閉板、および、この開閉板に突設され前記吸塵口を介して前記緩衝体よりも前記ケース体の外方へと突出する突起部を備え、前記吸塵口のそれぞれに配置されているとともに、前記突起部が前記被掃除面と交差する面に当接することにより前記各開閉板が前記各吸塵口を開口可能にそれぞれ閉塞する複数の開閉体と、前記ケース体の前記吸塵口間に位置して設けられ前記ケース体の下面から周縁へと湾曲して連続する反り面とを具備したものである。
【０００８】
そして、下面に被掃除面と略平行に対向する走行面を有したケース体の板状の滑動部にて下縁が構成されケース体の周面に形成された複数の吸塵口にそれぞれ開閉体を配置し、これら開閉体を、滑動部よりもケース体の内方の位置にて吸塵口に取り付けられた開閉板、および、この開閉板に突設され吸塵口を介して緩衝体よりもケース体の外方へと突出する突起部によって構成し、この突起部が被掃除面と交差する面に当接することにより開閉板により吸塵口を開口可能に閉塞するとともに、複数開口する吸塵口間に位置して、ケース体の下面から周縁へと湾曲して連続する反り面を設けることにより、例えば床面上を掃除する際には各開閉体により各吸塵口を閉塞して吸込室内の大気圧に対する負圧状態を確保して効率よく吸込口から床面の塵埃を吸い込み、家具や壁際を掃除する際には滑動部により絨毯の毛を押さえつけてこの毛が吸塵口に入り込むことが防止されて開口する各吸塵口から被掃除面と交差する面にて被掃除面までに風路が構成され、吸込口からでは吸塵し難い例えばケース体の前側に位置する家具や壁際の塵埃を確実に吸い込み、かつ、例えば毛足の長い絨毯などの凹凸のある被掃除面を掃除する場合でも被掃除面の凹凸が各吸塵口の下縁部に引っ掛かることなどを防止して、ケース体の走行性が向上し、掃除作業性が向上しつつ、板状の滑動部を設ける簡単な構成で床面および家具や壁際までも十分に吸塵して、掃除効率が向上する。
【０００９】
請求項２記載の電気掃除機の吸込口体は、請求項１記載の電気掃除機の吸込口体において、開閉板は、ケース体内の吸塵口の内方の上縁部に回動可能に軸支された軸支部を上部に有し下端部が前記ケース体の内方に向けて前記軸支部の回動方向に沿って湾曲して形成され、前記軸支部での回動により前記吸塵口を開閉するものである。
【００１０】
そして、開閉板が、ケース体内の吸塵口の上縁部に回動可能に軸支された軸支部を上部に有し下端部がケース体の内方に向けて軸支部の回動方向に沿って湾曲して形成され軸支部での回動により吸塵口を開閉することにより、開閉体の回動によって開いた吸塵口にて開閉体の下側から塵埃を吸い込むことができる。
【００１１】
請求項３記載の電気掃除機の吸込口体は、請求項１または２記載の電気掃除機の吸込口体において、開閉体は、常時吸塵口を閉塞する状態に保持する閉塞保持手段を具備したものである。
【００１２】
そして、開閉体を閉塞保持手段にて常時吸塵口を閉塞する状態に保持することにより、例えば吸込口からでは吸塵し難いケース体の前側に位置する家具や壁際の塵埃を吸い込む際には吸塵口を開口させて吸塵すればよく、通常の床面を掃除する際には吸込室内の大気圧に対する負圧が閉塞された吸塵口からリークすることなく確保されて吸込口からの吸塵効率が向上し、掃除効率が向上する。
【００１３】
請求項４記載の電気掃除機は、掃除機本体と、この掃除機本体に接続される請求項１ないし３いずれか一記載の電気掃除機の吸込口体とを具備したものである。
【００１４】
そして、簡単な構成で床面および家具や壁際までも十分に吸塵して掃除効率が向上する請求項１ないし３いずれか一記載の電気掃除機の吸込口体を備えることにより、掃除性が向上する。
【００１５】
【発明の実施の形態】
以下、本発明の実施の一形態を示す電気掃除機の構成を図面を参照して説明する。
【００１６】
図２において、１は掃除機本体で、この掃除機本体１は、上面を開口した下部本体ケース2a、および、この下部本体ケース2aの後部上面を閉塞する上部本体ケース2bが、前面を含む周縁に図示しないバンパを挟持して接合されて前側上面を開口した本体ケース２を有している。そして、掃除機本体１は、本体ケース２の前側上面を開閉自在に閉塞する蓋体４を回動自在に軸支している。また、本体ケース２は、進行方向の前側下面に図示しない旋回自在の旋回輪が取り付けられ、本体ケース２の後側側面に大径の従動輪６が回転自在に設けられ、掃除機本体１は旋回輪と従動輪６とにて被掃除面である床面上を走行可能となっている。
【００１７】
そして、掃除機本体１内には、電動送風機７が収容される図示しない電動送風機室が後側に区画形成され、この電動送風機７の吸込側に連通しかつ上方が開放して蓋体４にて開閉され集塵フィルタを収容する集塵室８が前側に区画形成されている。さらに、掃除機本体１の前側には、集塵室８に臨んで開口しホース９が着脱可能に接続される接続口10が形成されている。
【００１８】
また、ホース９は、可撓なホース本体11と、このホース本体11の一端に設けられ掃除機本体１の接続口10に着脱可能に差し込み接続される接続管12と、ホース本体11の他端に設けられ延長管13を介して吸込口本体14が接続される把持部15とを備えている。そして、把持部15には、電動送風機７などの駆動状態を設定操作する各種スイッチ16，16を有した操作手段17が配設されている。
【００１９】
一方、吸込口本体14は、図３ないし図６に示すように、前後方向である走行方向に対して横長矩形状で、アクリロニトリル−ブタジエン−スチレン（ＡＢＳ）樹脂などの合成樹脂製の上面を開口した下部ケース21と、この下部ケース21の上部に上面の開口を覆い同材質の下面を開口する上部ケース22とが、下部ケース21および上部ケース22の前面を含む周面に沿って軟質部材の緩衝体23を挟持して結合固定されて、後部略中央が後方に向けて突出する凸字状のケース体24を備えている。
【００２０】
そして、下部ケース21は上面に略垂直にリブ下部25aを有し、上部ケース22は下面に略垂直に下端縁がリブ下部25aに接合するリブ上部25bを有し、ケース体24はリブ下部25aおよびリブ上部25bにより横長矩形状の吸込部26とこの吸込部26の後部略中央に後方に一対突出するハウジング部27，27とにて凸字状に形成されている。また、吸込部26内には、リブ下部25aおよびリブ上部25bにより、前側に横長に位置し下部ケース21の下面に吸込口30が開口形成された吸込室31と、この吸込室31の一端側に位置して区画形成された駆動伝達室32と、吸込室31の一端側後部に位置して区画形成された電動機室33と、吸込室31の他端側後部に位置して区画形成された回路室34とを区画形成している。さらに、リブ下部25aおよびリブ上部25bの略中央には、それぞれ対向して凹状に形成された切欠保持凹部35a，35bがそれぞれ設けられている。
【００２１】
さらに、下部ケース21は、吸込部26の下面を構成する吸込下部21aと、この吸込下部21aの後部に一体的に設けられハウジング部27，27とにて凸字状に形成されている。そして、吸込下部21aの前部には、複数例えば２カ所、ケース体の長手方向に長手状すなわち横長状の吸塵口37，37が開口形成されている。そして、これら吸塵口37，37の下方には、図１に示すように、先端縁が前方に向けて吸込下部21aの底面から一面上に連続して突出する板状で下面に被掃除面である床面と略平行に対向する走行面38を有し上面で吸塵口37の下縁を構成する滑動部39が設けられている。さらに、吸込下部21aの前部には、滑動部39，39間に位置して先端縁が吸込下部21aの側部と同様に上方に向けて湾曲して突出し外面側に反り面40を有した案内部41が設けられている。なお、滑動部39の先端下縁は、円弧状に面取り42が設けられている。
【００２２】
また、吸込下部21aの前部には、上端縁が略半円状に切り欠かれた軸支凹部43を有する支持リブ44が複数設けられている。そして、これら支持リブ44の軸支凹部43には、吸塵口37を開閉する開閉体45が設けられている。この開閉体45は、軸方向がケース体24の長手方向に略沿う状態で支持リブ44の軸支凹部43に回転可能に軸支される回転シャフト46を備えている。また、回転シャフト46には、吸塵口37を開閉する開閉板47が一体的に設けられている。この開閉板47は、上端縁に回転シャフト46を嵌合する略円筒状の軸支部48が設けられ下端縁が後方である吸込室31に向けて湾曲した略板状に形成されている。また、開閉板47の下端縁が湾曲する側と反対側の前面には、前方に向けて略垂直に突出する板状の突起部49が突設されている。そして、開閉体45は、回転シャフト46に軸支された図示しないトーションコイルばねなどの閉塞保持手段により、常時図１に示すように開閉板47が吸塵口37を閉塞する状態に付勢されて、突起部49がケース体24の最外周に位置する緩衝体23より前方に突出する状態で保持されている。
【００２３】
一方、下部ケース21の吸込下部21aの前部両端側には、図示しない従動前輪が回転自在に軸支された従動前輪室51が形成されている。また、下部ケース21の一対のハウジング部27，27間には、従動後輪52を有した車輪軸53の両端部が架橋するように回転自在に軸支されている。
【００２４】
また、ケース体24には、ハウジング部27，27間に位置して下部ケース21および上部ケース22に挟持固定され吸込室31の後部略中央に連通する風路室54を区画する連結管部55が設けられている。この連結管部55は、円筒状で軸方向の一端側が吸込室31に向けてラッパ状に次第に径大となる吸込管部56を有した軸支管部57を有している。また、連結管部55は、吸込管部56の外周縁に外方に向けて鍔状に突出し周縁がそれぞれ下部ケース21および上部ケース22のリブ下部25aおよびリブ上部25bの各切欠保持凹部35a，35bに係合する取付板部58を備えている。そして、連結管部55は、軸支管部57の一端側の吸込管部56が吸込室31に向けてラッパ状に拡開し他端側がケース体24から後方に向けて略円筒状に突出し、軸支管部57の軸方向が前後方向かつ水平方向に沿ってケース体24に配設される。
【００２５】
さらに、連結管部55の軸支管部57には、回転自在に嵌着する回動管としての継手部61が取り付けられている。また、この継手部61には、一端部に設けられた回転軸62が延長管13やホース９に接続される他端側を上下方向に回動自在に継手部61に軸支された連通管としての連通管部63が取り付けられ、継手部61および連通管部63にて接続管64が構成されている。
【００２６】
また、ケース体24内には、吸込室31の左右方向の両端部のリブ下部25aおよびリブ上部25bの接合する位置にそれぞれ設けられた軸受66，66により回転自在に軸支された回転体としての回転清掃体67が配設されている。この回転清掃体67は、外周面に螺旋状に壁状のブレード68や布ブレードが設けられたシャフト69を備えている。そして、シャフト69の両端部には、回転自在に設けられ軸受66に係脱可能に装着される軸支部材71が回転自在に設けられているとともに、一端側にはプーリ72が一体的に設けられている。
【００２７】
さらに、ケース体24の電動機室33内には、出力プーリ75を設けた図示しない出力軸が駆動伝達室32に位置する状態で電動機76が配設されている。そして、出力プーリ75には回転清掃体67のプーリ72とにて無端ベルト状の駆動伝達部材78が掛け渡され、電動機76の駆動により回転清掃体67が回転する。
【００２８】
また、ケース体24の回路室34内には、床面検出手段80が配設されている。この床面検出手段80は、先端に床面に接地して回転する回転体81を軸支した腕部82の基端を回転体81がケース体24の下面に対して上下動するように軸支している。そして、ケース体24が床面から離間することにより回転体81が最下位に位置する状態に腕部82が回動することにより、ケース体24が持ち上げられたことを検出するスイッチ手段83が設けられている。また、腕部82には、略Ｕ字状に屈曲する保持腕部84が一体的に設けられているとともに、保持腕部84の上方には、上下方向に移動可能に図示しない球体が配設されている。そして、ケース体24の下面を上方に向けて反転させた状態では、球体が上部ケース22側に移動して保持腕部84の先端が球体に当接し、腕部82に設けた回転体81が自重によりケース体24内に移動することなくケース体24が持ち上げられた状態の最下位に位置する状態と同様の最下位に位置する状態で保持され、床面から持ち上げられていることをスイッチ手段83にて検出する。
【００２９】
次に、上記実施の形態の動作について説明する。
【００３０】
掃除するに際して、掃除機本体１に延長管13およびホース９を介して吸込口本体14を接続する。この状態で、ホース９の把持部15を持って操作手段17のスイッチ16の操作により、適宜電動送風機７および電動機76を所望の駆動状態で駆動し、把持部15を押動して吸込口本体14を床面上で前後に走行させる。
【００３１】
そして、電動送風機７の駆動により、適宜電動機76の駆動により回転する回転清掃体67にて掻き出された床面の塵埃を吸込口30から空気とともに吸い込み、延長管13およびホース９を介して掃除機本体１の集塵室８内に装着した集塵袋に流入して捕捉する。さらに、塵埃を集塵袋にて分離除去した空気は、電動送風機７から電動送風機室内に流入し、本体ケース２に設けられた図示しない排気口を介して外気に排気される。
【００３２】
なお、この床面上を走行させて掃除する状態では、閉塞保持手段の付勢により開閉体45の開閉板47が吸塵口37を閉塞した状態となっている。このため、吸塵口37から空気が吸い込まれるリークが防止されて、床面に対向する吸込口30のみが開口する状態となり、ケース体24の下面における大気圧に対する負圧状態が確保され、効率よく吸込口30から塵埃が空気とともに吸い込まれる。
【００３３】
そして、掃除する床面が絨毯などの毛足が長い場合、吸込口本体14を前進させる際に、吸込口本体14の前側下縁に位置する反り面40および滑動部39の面取り42により絨毯の毛が案内される状態となり、絨毯の毛が吸込口本体14の前側下縁部分に引っ掛かるなどを防止して吸込口本体14が円滑に走行する。
【００３４】
また、家具が載置された周縁、壁際などの床面に対して交差して立ち上がる面を有する部分の近傍を掃除する際、吸込口本体14の前面が家具や壁面に当接すると、吸込口本体14の最前に位置する開閉体45の突起部49の先端が先ず当接する。そして、図７に示すように、閉塞保持手段の付勢に抗して開閉板47が上端縁に軸支する回転シャフト46を回転軸として回動し、吸塵口37を開口する。
【００３５】
ここで、床面が毛足の長い絨毯などの場合、吸塵口37の下縁は滑動部39にて構成され、絨毯の毛が滑動部39により押さえ付けられる状態となって吸塵口37に入り込まず、吸塵口37の開口状態が確保される。そして、家具や壁面により床面から吸塵口37まで風路が構成される状態となって、家具や壁の際の塵埃を吸塵口37から吸い込み、吸込口30から吸い込んだ空気と吸込室31で合流して延長管13およびホース９を介して掃除機本体１の集塵室８内に装着した集塵袋に流入して捕捉する。
【００３６】
なお、吸込口本体14が家具や壁面から離間すると、再び閉塞保持手段の付勢により図１に示すように開閉板47が吸塵口37を閉塞し、吸込口30のみが開口して吸込口本体14の下面の大気圧に対する負圧状態が保持される状態となる。
【００３７】
そして、ホース９を床面上においた場合、あるいは吸込口30に閉塞した塵埃の除去、回転清掃体67に絡み付いた糸ゴミなどの除去のために、吸込口本体14の下面が床面から離間すると、床面検出手段80の回転体81が床面から離間して回転体81が最下位に位置する状態に腕部82が回動し、スイッチ手段83がオン状態となって、掃除機本体１に設けられた図示しない回路基板に搭載する制御手段にて吸込口本体14の下面が床面から離間する状態になったと判断して、電動機76の駆動を停止させて回転清掃体67の回転を停止させる。
【００３８】
上述したように、吸込口30とは別に吸込口本体14の前面に開口し下面に被掃除面である床面と対向する走行面38を有した滑動部39にて下縁が構成される吸塵口37を設け、この吸塵口37を開閉体45にて開閉するので、掃除する床面が毛足の長い絨毯などでも滑動部39により吸塵口37に絨毯の毛が入り込んで閉塞することを防止し、滑動部39を設ける簡単な構造で開口が確保された吸塵口37から効率よく吸塵でき、掃除効率を向上できる。
【００３９】
そして、開閉体45を家具や壁などの被掃除面である床面と交差する面に当接することにより吸塵口37を開口させる構成としたため、床面と交差する面により床面から吸塵口37まで風路が構成されて、吸込口30からでは吸塵し難い吸塵口37が開口するケース体24の前側の塵埃も効率よく確実に吸塵でき、掃除性を向上できる。
【００４０】
また、開閉体45に先端がケース体24の外周より外方に突出する突起部49を設けたため、簡単な構成で家具や壁面などの床面に交差する面に当接した際に吸塵口37が開口する構成が容易に得られ、吸込口30からでは吸塵し難い吸塵口37が開口するケース体24の前側に位置する塵埃も効率よく確実に吸塵でき、掃除性を向上できる。
【００４１】
さらに、吸塵口37を横長矩形状に形成したケース体24の前面に長手方向に横長状に設けたため、簡単な構造で前側における吸塵口37からの吸塵領域が増大し、吸込口30からでは吸塵し難い吸塵口37が開口するケース体24の前側のほぼ全域に位置する塵埃も効率よく確実に吸塵でき、掃除性を向上できる。
【００４２】
また、開閉体45に吸塵口37を常時閉塞して家具や壁面などに当接した場合のみ吸塵口37を開口させる閉塞保持手段を設けたため、通常の床面上を走行させて吸込口30から吸塵して掃除する状態では、吸塵口37が閉塞してリークする状態が防止され、吸込口30が開口するケース体24の下面の大気圧に対する負圧状態を確保でき、吸込口30からの吸塵効率が向上して、掃除性を向上できる。
【００４３】
そして、吸塵口37を複数開口形成して吸塵口37，37間にケース体24の下面から周縁に湾曲して連続する反り面40を設けたため、毛足の長い絨毯などの凹凸を有した被掃除面である床面を掃除する場合でも、絨毯の毛を反り面40で案内して押さえ付け反り面40が絨毯の毛を乗り上げるようにして走行するので、絨毯の毛が滑動部39の先端部に引っ掛かるなどを防止でき、ケース体24の走行性が向上して掃除作業性を向上できる。
【００４４】
さらに、滑動部39の先端下縁に面取り42を設けたため、反り面40と同様に絨毯の毛を案内して引っ掛かりにくくなり、ケース体24の走行性が向上して掃除作業性を向上できる。
【００４５】
また、吸塵口37を下部ケース21に設けて緩衝体23の下方に位置する状態としたため、家具や壁面に開閉体45の突起部49が当接して開閉板47が回動して吸塵口37が開口する状態では、緩衝体23がケース体24の最前に位置するので、緩衝体23が家具や壁面に当接して吸塵口37の上方が家具や壁面に当接する緩衝体23により覆われた状態となって、家具や壁面にて床面から吸塵口37まで構成される風路の大気圧に対する負圧状態が確保され、吸塵口37からの吸塵効率が向上して確実に吸塵でき、掃除性を向上できる。
【００４６】
さらに、吸塵口37の下縁を構成する滑動部39を板状に形成したため、吸塵口37から床面までの距離を最少にでき、吸塵口37から効率よく吸塵できるとともに、吸込口本体14の上下方向の寸法を短くでき、小型化できる。
【００４７】
なお、上記実施の形態において、キャニスタ型の電気掃除機に限らず、吸込口本体14が掃除機本体１の下面に直接形成されたアップライト型や掃除機本体１と吸込口本体14とが一体化された自走式の電気掃除機、ハンディ型などにも適用することができる。
【００４８】
そして、吸塵口37を家具や壁面などの床面に対して交差する面に当接することにより開口させて説明したが、例えばホース９の手許に設けた操作手段17の設定操作により、適宜吸塵口37を開口させて吸塵するなどしてもよい。
【００４９】
また、家具や壁面に当接した際に吸塵口37を開口させる構成としては、上記突起部49を一体的に設ける構成に限らず、例えばセンサなどにより当接したことを認識することにより別途設けたソレノイドや電動機などにて回動させて電気的に開口させたり、先端部が進退可能に設けた棒状体を設け、この棒状体の後退によりこの棒状体に連結した開閉板47や回動シャフト46を回動させて機械的に開口させるなど、いずれの構成とすることができる。
【００５０】
また、吸塵口37をケース体24の前面に開口形成したが、側面に開口形成してもよい。
【００５１】
さらに、複数開口形成したが、１つのみでもよい。
【００５２】
また、横長状に開口形成したが、例えば円形状に開口したものを複数並列状に設けたり格子状に設けるなどしてもよい。
【００５３】
そして、トーションコイルバネなどの閉塞保持手段にて常時吸塵口37を開口する状態としたが、上述したように、任意に開口させるようにしたり、トーションコイルバネに限らず、板ばねやスプリング、ゴムなどの弾性部材を用いたり、上述したように、ソレノイドや電動機にて適宜開閉させるようにしてもよい。
【００５４】
そして、回転清掃体67および電動機76を設けて説明したが、これらを設けなくてもよい。また、回転清掃体67の代わりに吸込口本体14を走行させるあるいは走行を補助する走行輪を電動機76にて回転させたり、電動機76の代わりに吸気流により回転清掃体67を回転させるなどしてもよい。
【００５５】
【発明の効果】
請求項１記載の電気掃除機の吸込口体によれば、緩衝体よりもケース体の外方に突出する開閉体の突起部が被掃除面と交差する面に当接することにより開閉体の開閉板により開口可能に閉塞される吸塵口の下縁部を下面に被掃除面と略平行に対向する走行面を有したケース体の板状の滑動部にて構成するとともに、複数開口する吸塵口間にケース体の下面から周縁へと湾曲して連続する反り面を設けるため、例えば床面上を掃除する際には吸塵口を閉塞して吸込室内の大気圧に対する負圧状態を確保して効率よく吸込口から床面の塵埃を吸い込み、家具や壁際を掃除する際には滑動部により絨毯の毛を押さえつけてこの毛が吸塵口に入り込むことを防止して開口を確保した吸塵口から被掃除面までに風路が構成され、吸込口からでは吸塵し難い例えば家具や壁際の塵埃を吸塵口から確実に吸い込み、かつ、例えば毛足の長い絨毯などの凹凸のある被掃除面を掃除する場合でも被掃除面の凹凸を反り面が案内して各吸塵口の下縁部に引っ掛かることなどを防止できるので、ケース体の走行性が向上して掃除作業性を向上できるとともに、板状の滑動部を設ける簡単な構成で床面および家具や壁際までも十分に吸塵でき、掃除効率を向上できる。吸塵口から吸塵でき、掃除効率を向上できる。
【００５６】
請求項２記載の電気掃除機の吸込口体によれば、請求項１記載の電気掃除機の吸込口体の効果に加え、開閉板が、ケース体内の吸塵口の上縁部に回動可能に軸支された軸支部を上部に有し下端部がケース体の内方に向けて軸支部の回動方向に沿って湾曲して形成され軸支部での回動により吸塵口を開閉することにより、開閉体の回動によって開いた吸塵口にて開閉体の下側から塵埃を吸い込むことができる。
【００５７】
請求項３記載の電気掃除機の吸込口体によれば、請求項１または２記載の電気掃除機の吸込口体の効果に加え、開閉体に常時吸塵口を閉塞する状態に保持する閉塞保持手段を設けるため、例えば吸込口からでは吸塵し難い家具や壁際の塵埃を吸い込む際には吸塵口を開口させて吸塵し、通常の床面を掃除する際には吸込室内の大気圧に対する負圧が閉塞保持手段により閉塞された吸塵口からリークすることなく確保でき、吸込口からの吸塵効率が向上して掃除効率を向上できる。
【００５８】
請求項４記載の電気掃除機によれば、簡単な構成で例えば床面および家具や壁際までも十分に吸塵して掃除効率が向上する請求項１ないし３いずれか一記載の電気掃除機の吸込口体を備えるため、掃除性を向上できる。
【図面の簡単な説明】
【図１】本発明の実施の一形態を示す閉塞した吸塵口近傍の吸込口本体の断面図である。
【図２】同上電気掃除機を示す斜視図である。
【図３】同上吸込口本体の上部ケースを取り外した平面図である。
【図４】同上吸込口本体の正面図である。
【図５】同上吸込口本体の底面図である。
【図６】同上吸込口本体の側面断面図である。
【図７】同上吸込口本体の開口した吸塵口近傍を示す断面図である。
【符号の説明】
１掃除機本体
14 吸込口本体
23 緩衝体
24 ケース体
30 吸込口
31 吸込室
37 吸塵口
38 走行面
39 滑動部
40 反り面
45 開閉体
47 開閉板
48 軸支部
49 突起部[0001]
BACKGROUND OF THE INVENTION
  The present invention includes a suction port body of a vacuum cleaner having a dust suction port that opens by opening a suction port on a lower surface and contacting a surface intersecting a surface to be cleaned, and a suction port body of the vacuum cleaner. It relates to a vacuum cleaner.
[0002]
[Prior art]
  2. Description of the Related Art Conventionally, various configurations described in, for example, Japanese Utility Model Publication No. 61-37394 and Japanese Patent Application Laid-Open No. 1-1181826 are known as suction ports of this type of vacuum cleaner.
[0003]
  And what is described in Japanese Utility Model Publication No. 61-37394 is a case body in which a suction chamber having a suction port for sucking dust together with air is formed on the front side in the traveling direction on the lower surface opposite to the floor surface to be cleaned. It has. On the front side of the case body, a dust suction port is cut out over the suction port. In addition, a bumper attached to the peripheral surface including at least the front surface of the case body is integrally provided with a tongue-like seal lip that covers the dust suction port and has a lower end edge that is a free end. Is provided with a protrusion that protrudes outward from the outermost periphery of the case body including the bumper, and the seal lip is elastically deformed when the protrusion abuts against the furniture or the wall surface to open the dust suction port. The structure which absorbs the dust of dust from a dust inlet is taken.
[0004]
  Moreover, the thing of Unexamined-Japanese-Patent No. 1-1181826 is equipped with the case body which divides and forms the suction chamber which opened the suction inlet in the lower surface which opposes the floor surface which is a to-be-cleaned surface. The front lower surface of the case body is provided with a recess that opens forward and downward in the traveling direction and communicates with the suction port. Further, the case body is provided with a protruding portion that is located on the front surface and protrudes by an urging means such as a spring so that the tip portion can advance and retreat. Further, the case body is provided with a tongue-like seal lip portion that covers the front side of the concave portion, and the projection portion rotates by the projection portion that retreats by abutting against the wall surface or furniture, so that the seal lip portion is formed. An opening / closing body that opens the front side of the recessed portion that covers is disposed, and a configuration is adopted in which dust is sucked into the suction port from the front side of the recessed portion that is opened by rotation of the opening / closing body.
[0005]
[Problems to be solved by the invention]
  However, in the suction opening body of the conventional vacuum cleaner described in Japanese Utility Model Publication No. 61-37394 and Japanese Patent Laid-Open No. 1-181826, the lower end of the opening portion that is opened when contacting the furniture or the wall surface is Since it is opened, for example, when cleaning a carpet with a long bristle, etc., there is a possibility that the hair of the carpet enters the opening and closes the opening, so that the dust on the furniture and the wall cannot be sufficiently absorbed.
[0006]
  The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric vacuum cleaner and an intake port body that can efficiently absorb dust by reliably securing an opening state of the dust intake port with a simple configuration.
[0007]
[Means for Solving the Problems]
  The suction port body of the vacuum cleaner according to claim 1 has a suction chamber that opens the suction port on a lower surface facing the surface to be cleaned., Have a buffer on the circumferenceCase body and this case bodyThe circumference ofA plurality of dust inlets that communicate with the suction chamber and open toward the outer periphery; and a lower edge of each of the dust inlets provided in the case body, and a lower surface substantially parallel to the surface to be cleaned Opposing running surfaces are providedThe end portion is located inward of the case body with respect to the buffer body.A plurality of plate-like sliding parts;An opening / closing plate attached to the dust suction port at an inner position of the case body relative to the sliding portion, and an outer side of the case body than the buffer body protruding from the opening / closing plate through the dust suction port. And a protrusion that protrudes in the direction, and is disposed at each of the dust suction ports, and the protrusion isBy contacting the surface intersecting the surface to be cleanedEach open / close plate opens each dust suction port.A plurality of opening / closing bodies that are respectively closed so as to be openable, and a warped surface that is provided between the dust suction ports of the case body and that is curved and continuous from the lower surface to the periphery of the case body.
[0008]
  And a lower edge is comprised in the plate-shaped sliding part of the case body which has the running surface which faces the surface to be cleaned substantially parallel to the lower surface.Formed on the circumference of the case bodyMultiple dust inletsOpening and closing bodies are arranged respectively on the opening and closing bodies, and the opening and closing plates attached to the dust suction openings at positions inward of the case body from the sliding portion, and the opening and closing projections of the opening and closing boards are buffered via the dust suction openings. Consists of protrusions that protrude outward from the body of the case, and these protrusionsBy contacting the surface that intersects the surface to be cleanedOpen and close the dust suction portFor example, when cleaning the floor surface, each opening and closing is possible by closing the opening so that it can be opened and providing a curved surface that is curved and continuous from the lower surface of the case body to the periphery. Each dust suction port is closed by the body to ensure a negative pressure state relative to the atmospheric pressure in the suction chamber, efficiently sucking in dust from the floor from the suction port, and when cleaning furniture and walls, the sliding part removes the hair of the carpet. An air passage is formed from each dust suction opening that is pressed and prevented from entering the dust suction opening to the surface to be cleaned at the surface that intersects the surface to be cleaned, and is difficult to absorb dust from the suction opening. Even if the dust on the front side of the furniture or wall is securely sucked in and the uneven surface to be cleaned, such as a carpet with long hairs, is cleaned, the unevenness of the surface to be cleaned is at the lower edge of each dust inlet. To prevent it from getting caught, Improved runnability of the scan body, while improving the cleaning workability, and dust suction is also enough to the floor and furniture and the wall with a simple configuration of providing a plate-shaped slide, the cleaning efficiency is improved.
[0009]
  The suction port body of the vacuum cleaner according to claim 2 is an opening / closing portion of the suction port body of the vacuum cleaner according to claim 1.BoardOf the dust inlet inside the caseInwardThe shaft support portion is pivotally supported on the upper edge portion at the upper portion, and the lower end portion is formed to be curved along the rotation direction of the shaft support portion toward the inside of the case body, and the shaft support portion. Open and close the dust inlet by turningRuIs.
[0010]
  AndThe opening and closing plateThe upper part of the case body is pivotally supported at the upper edge of the dust suction port, and the lower end part is curved in the direction of rotation of the shaft support part toward the inside of the case body. Open and close the dust inlet by turning the shaft supportRukoWith this, dust can be sucked in from the lower side of the opening / closing body through the dust suction opening opened by the rotation of the opening / closing body..
[0011]
  Claim3The suction mouth of the vacuum cleaner described in claim 1Or 2In the suction opening body of the vacuum cleaner described above, the opening / closing body includes a closing holding means for always holding the dust suction opening in a closed state.
[0012]
  And, by holding the opening / closing body in a state where the dust suction port is always closed by the closing holding means, for example, when sucking in the dust on the front side of the case body and the wall that is difficult to suck dust from the suction port, the dust suction port When cleaning the normal floor surface, the negative pressure against the atmospheric pressure in the suction chamber is secured without leaking from the closed dust suction port, and the dust suction efficiency from the suction port is improved. , Cleaning efficiency is improved.
[0013]
  Claim4The vacuum cleaner according to claim 1 is connected to the main body of the vacuum cleaner and the main body of the vacuum cleaner.3The vacuum cleaner has a suction port body according to any one of the above.
[0014]
  Further, the cleaning efficiency is improved by sufficiently absorbing dust even on the floor, furniture and walls with a simple configuration.3By providing the suction port body of any one of the vacuum cleaners, the cleaning property is improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, the structure of the vacuum cleaner which shows one Embodiment of this invention is demonstrated with reference to drawings.
[0016]
  In FIG. 2, reference numeral 1 denotes a vacuum cleaner body. The vacuum cleaner body 1 includes a lower body case 2a having an upper surface opened, and an upper body case 2b that closes a rear upper surface of the lower body case 2a. A body case 2 having a front upper surface opened by sandwiching a bumper (not shown). And the vacuum cleaner main body 1 is pivotally supporting the lid | cover body 4 which obstruct | occludes the front upper surface of the main body case 2 so that opening and closing is possible. Further, the main body case 2 is provided with a swiveling swiveling wheel (not shown) attached to the front lower surface in the traveling direction, and a large-diameter driven wheel 6 is rotatably provided on the rear side surface of the main body case 2. The turning wheel and the driven wheel 6 can travel on the floor surface to be cleaned.
[0017]
  In the vacuum cleaner main body 1, an electric blower chamber (not shown) in which the electric blower 7 is accommodated is formed on the rear side, communicates with the suction side of the electric blower 7, and opens upward to open the lid 4. A dust collection chamber 8 that is opened and closed and accommodates the dust collection filter is partitioned on the front side. Furthermore, a connection port 10 is formed on the front side of the cleaner body 1 so as to face the dust collection chamber 8 and to be connected to the hose 9 so as to be detachable.
[0018]
  The hose 9 includes a flexible hose body 11, a connection pipe 12 provided at one end of the hose body 11 and detachably inserted into the connection port 10 of the cleaner body 1, and the other end of the hose body 11. And a grip portion 15 to which the suction port main body 14 is connected via the extension pipe 13. The grip 15 is provided with operating means 17 having various switches 16 and 16 for setting and operating the driving state of the electric blower 7 and the like.
[0019]
  On the other hand, as shown in FIG. 3 to FIG. 6, the suction port body 14 has a horizontally long rectangular shape with respect to the traveling direction which is the front-rear direction, and has an upper surface made of a synthetic resin such as acrylonitrile-butadiene-styrene (ABS) resin. The lower case 21 and the upper case 22 covering the upper surface opening and opening the lower surface of the same material on the upper part of the lower case 21 are made of a soft member along the peripheral surface including the lower case 21 and the front surface of the upper case 22. A convex-shaped case body 24 is provided which is fixedly coupled with the buffer body 23 interposed therebetween and whose rear center substantially protrudes rearward.
[0020]
  The lower case 21 has a rib lower part 25a substantially perpendicular to the upper surface, the upper case 22 has a rib upper part 25b substantially perpendicular to the lower surface and a lower end edge joined to the rib lower part 25a, and the case body 24 has a rib lower part 25a. The rib upper portion 25b is formed in a convex shape with a horizontally long suction part 26 and a pair of housing parts 27 and 27 projecting rearward at the center of the rear part of the suction part 26. Also, in the suction portion 26, a rib lower portion 25a and a rib upper portion 25b are located in a horizontally long front side, a suction chamber 31 having a suction port 30 formed in the lower surface of the lower case 21, and one end side of the suction chamber 31 The drive transmission chamber 32 that is partitioned and formed at the position, the motor chamber 33 that is partitioned and positioned at the rear end of the suction chamber 31, and the partition that is positioned at the rear end of the suction chamber 31 and the other end. The circuit chamber 34 is partitioned. Furthermore, notch holding recesses 35a and 35b formed in a concave shape facing each other are provided at substantially the center of the rib lower portion 25a and the rib upper portion 25b, respectively.
[0021]
  Further, the lower case 21 is formed in a convex shape by a suction lower part 21a constituting the lower surface of the suction part 26 and a housing part 27, 27 provided integrally with a rear part of the suction lower part 21a. Further, a plurality of, for example, two places, that is, longitudinally or horizontally elongated dust suction ports 37, 37 are formed in the front portion of the suction lower portion 21a in the longitudinal direction of the case body. 1. Below these dust suction ports 37, 37, as shown in FIG. 1, the tip edge is a plate-like shape that continuously protrudes from the bottom surface of the suction lower portion 21a toward the front, and the lower surface is a surface to be cleaned. A sliding portion 39 is provided which has a running surface 38 facing substantially parallel to a certain floor surface and which forms the lower edge of the dust suction port 37 on the upper surface. Further, the front edge of the suction lower portion 21a is located between the sliding portions 39, 39, and the tip edge is curved upward and protrudes like the side portion of the suction lower portion 21a, and has a warped surface 40 on the outer surface side. A guide part 41 is provided. Note that the lower edge of the tip of the sliding portion 39 is provided with a chamfer 42 in an arc shape.
[0022]
  Further, a plurality of support ribs 44 having a shaft support recess 43 whose upper end edge is cut out in a substantially semicircular shape are provided at the front portion of the suction lower portion 21a. An opening / closing body 45 that opens and closes the dust suction port 37 is provided in the shaft support recess 43 of the support rib 44. The opening / closing body 45 includes a rotation shaft 46 that is rotatably supported by the shaft support recess 43 of the support rib 44 in a state where the axial direction is substantially along the longitudinal direction of the case body 24. The rotating shaft 46 is integrally provided with an opening / closing plate 47 that opens and closes the dust suction port 37. The opening / closing plate 47 is formed in a substantially plate shape that is provided with a substantially cylindrical shaft support portion 48 that fits the rotary shaft 46 at the upper end edge and the lower end edge is curved toward the suction chamber 31 that is the rear. In addition, a plate-like protrusion 49 that protrudes substantially vertically toward the front is provided on the front surface of the opening / closing plate 47 opposite to the side on which the lower end edge is curved. The opening / closing body 45 is constantly urged so that the opening / closing plate 47 closes the dust suction port 37 as shown in FIG. 1 by a closing holding means such as a torsion coil spring (not shown) supported by the rotating shaft 46. The protrusion 49 is held in a state of protruding forward from the buffer body 23 located on the outermost periphery of the case body 24.
[0023]
  On the other hand, a driven front wheel chamber 51 in which a driven front wheel (not shown) is rotatably supported is formed on both ends of the front portion of the lower suction portion 21a of the lower case 21. Further, between the pair of housing portions 27, 27 of the lower case 21, both end portions of a wheel shaft 53 having a driven rear wheel 52 are rotatably supported so as to be bridged.
[0024]
  Further, the case body 24 is connected to the lower case 21 and the upper case 22 and is located between the housing parts 27 and 27, and is connected to a pipe portion 55 that defines an air passage chamber 54 that communicates with the substantially rear center of the suction chamber 31. Is provided. The connecting pipe part 55 has a cylindrical support pipe part 57 having a suction pipe part 56 which is cylindrical and has one end side in the axial direction gradually increasing in diameter toward the suction chamber 31 in a trumpet shape. Further, the connecting pipe part 55 protrudes outwardly from the outer peripheral edge of the suction pipe part 56, and the peripheral parts are respectively provided in the notch holding recesses 35a of the lower case 21 and the upper case 22 of the rib lower part 25a and the rib upper part 25b, A mounting plate 58 that engages with 35b is provided. And, the connection pipe part 55, the suction pipe part 56 on one end side of the shaft support pipe part 57 expands in a trumpet shape toward the suction chamber 31, and the other end side protrudes in a substantially cylindrical shape from the case body 24 toward the rear, The axial support pipe 57 is disposed in the case body 24 in the axial direction along the front-rear direction and the horizontal direction.
[0025]
  Further, a joint portion 61 as a rotating tube that is rotatably fitted is attached to the shaft support tube portion 57 of the connection tube portion 55. In addition, the joint portion 61 includes a communication pipe that is pivotally supported by the joint portion 61 so that the rotary shaft 62 provided at one end portion thereof is pivotable in the vertical direction on the other end side connected to the extension pipe 13 and the hose 9. The connecting pipe part 63 is attached, and the joint part 61 and the connecting pipe part 63 constitute a connecting pipe 64.
[0026]
  Further, in the case body 24, as a rotating body rotatably supported by bearings 66, 66 provided at positions where the rib lower portion 25a and the rib upper portion 25b of the suction chamber 31 at both ends in the left-right direction are joined, respectively. The rotary cleaning body 67 is arranged. The rotary cleaning body 67 includes a shaft 69 provided with a wall-like blade 68 and a cloth blade in a spiral shape on the outer peripheral surface. A shaft support member 71 is rotatably provided at both ends of the shaft 69 and is detachably attached to the bearing 66, and a pulley 72 is integrally provided at one end side. It has been.
[0027]
  Further, an electric motor 76 is disposed in the electric motor chamber 33 of the case body 24 in a state where an output shaft (not shown) provided with an output pulley 75 is positioned in the drive transmission chamber 32. Then, an endless belt-like drive transmission member 78 is stretched around the output pulley 75 by the pulley 72 of the rotary cleaning body 67, and the rotary cleaning body 67 is rotated by driving the electric motor 76.
[0028]
  A floor surface detection means 80 is disposed in the circuit chamber 34 of the case body 24. The floor surface detection means 80 is configured such that the proximal end of an arm portion 82 that pivotally supports a rotating body 81 that rotates while being grounded to the floor at the distal end is arranged so that the rotating body 81 moves up and down relative to the lower surface of the case body 24. I support. Then, switch means 83 is provided for detecting that the case body 24 is lifted by rotating the arm portion 82 in a state where the rotating body 81 is positioned at the lowest position by separating the case body 24 from the floor surface. It has been. The arm portion 82 is integrally provided with a holding arm portion 84 bent in a substantially U shape, and a sphere (not shown) is provided above the holding arm portion 84 so as to be movable in the vertical direction. Has been. Then, in a state where the lower surface of the case body 24 is turned upward, the sphere moves to the upper case 22 side, the tip of the holding arm portion 84 comes into contact with the sphere, and the rotating body 81 provided on the arm portion 82 The switch means that the case body 24 is held in the lowest position and is lifted from the floor surface without moving into the case body 24 due to its own weight. Detect at 83.
[0029]
  Next, the operation of the above embodiment will be described.
[0030]
  When cleaning, the suction port body 14 is connected to the cleaner body 1 via the extension pipe 13 and the hose 9. In this state, by holding the grip portion 15 of the hose 9 and operating the switch 16 of the operation means 17, the electric blower 7 and the motor 76 are appropriately driven in a desired drive state, and the grip portion 15 is pushed to suck the suction port body. Run 14 back and forth on the floor.
[0031]
  Then, when the electric blower 7 is driven, the dust on the floor scraped by the rotary cleaning body 67 that is appropriately rotated by the drive of the electric motor 76 is sucked together with air from the suction port 30 and cleaned through the extension pipe 13 and the hose 9. It flows into a dust bag attached in the dust chamber 8 of the machine body 1 and is captured. Further, the air from which the dust is separated and removed by the dust collection bag flows into the electric blower chamber from the electric blower 7 and is exhausted to the outside air through an exhaust port (not shown) provided in the main body case 2.
[0032]
  In the state of running and cleaning on the floor surface, the opening / closing plate 47 of the opening / closing body 45 is in a state of closing the dust suction port 37 by the urging of the closing holding means. For this reason, leakage of air from the dust suction port 37 is prevented, and only the suction port 30 facing the floor surface is opened, and a negative pressure state with respect to atmospheric pressure is secured on the lower surface of the case body 24, which is efficient. Dust is sucked together with air from the suction port 30.
[0033]
  When the floor surface to be cleaned is long, such as a carpet, when the suction port main body 14 is advanced, the warp surface 40 located at the lower front edge of the suction port main body 14 and the chamfer 42 of the sliding portion 39 The bristles are guided, and the bristles of the carpet are prevented from being caught by the front lower edge portion of the suction inlet main body 14, and the suction inlet main body 14 runs smoothly.
[0034]
  In addition, when cleaning the vicinity of the portion where the furniture is placed, the vicinity of the wall, or the like having a surface that crosses the floor surface and rises, First, the tip of the protrusion 49 of the opening / closing body 45 located in front of the main body 14 comes into contact. Then, as shown in FIG. 7, the opening / closing plate 47 rotates about the rotation shaft 46 pivotally supported on the upper end edge against the urging force of the closing and holding means, and the dust suction port 37 is opened.
[0035]
  Here, when the floor surface is a carpet with a long bristle foot, the lower edge of the dust suction port 37 is configured by the sliding portion 39, and the hair of the carpet is pressed by the sliding portion 39 and enters the dust suction port 37. Therefore, the opening state of the dust suction port 37 is ensured. Then, the air path is constructed from the floor surface to the dust suction port 37 by the furniture and the wall surface, and dust at the time of furniture and the wall is sucked from the dust suction port 37 and the air sucked from the suction port 30 and the suction chamber 31 It joins and flows into the dust bag attached in the dust chamber 8 of the cleaner body 1 through the extension pipe 13 and the hose 9 to be captured.
[0036]
  When the suction port body 14 is separated from the furniture or the wall surface, the opening / closing plate 47 closes the dust suction port 37 again as shown in FIG. 1 by the urging of the closing and holding means, and only the suction port 30 opens to open the suction port body. The negative pressure state with respect to the atmospheric pressure on the lower surface of 14 is maintained.
[0037]
  Then, when the hose 9 is placed on the floor, or to remove dust clogged by the suction port 30 and to remove yarn dust entangled with the rotary cleaning body 67, the lower surface of the suction port body 14 is separated from the floor surface. Then, the rotary member 81 of the floor surface detection means 80 is separated from the floor surface and the arm portion 82 is rotated in a state where the rotary body 81 is positioned at the lowest position, the switch means 83 is turned on, and the cleaner body The control means mounted on the circuit board (not shown) provided in 1 determines that the lower surface of the suction port body 14 has been separated from the floor surface, stops the driving of the motor 76, and rotates the rotary cleaning body 67. Stop.
[0038]
  As described above, the bottom edge is constituted by the sliding portion 39 having the running surface 38 that opens on the front surface of the suction port main body 14 separately from the suction port 30 and faces the floor surface that is the surface to be cleaned on the lower surface. Since the mouth 37 is provided and the dust suction port 37 is opened and closed by the opening / closing body 45, even if the floor surface to be cleaned is a carpet with long hairs, the sliding portion 39 prevents the hair of the carpet from entering and closing the dust suction port 37. In addition, it is possible to efficiently suck dust from the dust suction port 37 with an opening secured with a simple structure in which the sliding portion 39 is provided, and the cleaning efficiency can be improved.
[0039]
  And since it was set as the structure which opens the dust suction port 37 by contact | abutting the opening / closing body 45 to the surface which cross | intersects the floor surface which is to-be-cleaned surfaces, such as furniture and a wall, the dust suction port 37 from a floor surface by the surface which cross | intersects a floor surface Thus, dust on the front side of the case body 24 in which the dust suction port 37, which is difficult to absorb dust from the suction port 30, is formed can be efficiently and surely sucked, and the cleaning performance can be improved.
[0040]
  In addition, since the opening / closing body 45 is provided with a projection 49 whose tip protrudes outward from the outer periphery of the case body 24, the dust suction port 37 when contacting a surface intersecting the floor surface such as furniture or wall surface with a simple configuration. Therefore, the dust positioned on the front side of the case body 24 where the dust suction port 37 that is difficult to absorb from the suction port 30 can be sucked efficiently and reliably, and the cleaning performance can be improved.
[0041]
  Further, since the dust suction port 37 is provided in a horizontally long shape in the longitudinal direction on the front surface of the case body 24 formed in a horizontally long rectangular shape, the dust suction area from the dust suction port 37 on the front side increases with a simple structure, and the dust suction port 30 It is possible to efficiently and surely absorb dust located in almost the entire area on the front side of the case body 24 where the dust suction port 37 that is difficult to open is opened, and the cleaning performance can be improved.
[0042]
  In addition, since the opening / closing body 45 is provided with a closing holding means that opens the dust suction port 37 only when the dust suction port 37 is always closed and comes into contact with furniture or a wall surface, it is allowed to travel on the normal floor surface from the suction port 30. In the state where dust is sucked and cleaned, the state where the dust suction port 37 is blocked and leaks is prevented, and a negative pressure state with respect to the atmospheric pressure on the lower surface of the case body 24 where the suction port 30 opens can be secured. Efficiency improves and can improve cleaning property.
[0043]
  Further, since a plurality of dust suction ports 37 are formed and a curved surface 40 that is curved from the lower surface of the case body 24 to the periphery is provided between the dust suction ports 37, 37, a cover having irregularities such as a carpet with a long bristle. Even when cleaning the floor surface, which is the cleaning surface, the carpet hair is guided by the warped surface 40 and pressed so that the warped surface 40 rides on the carpet hair, so the carpet hair moves to the tip of the sliding portion 39. The case body 24 can be prevented from being caught, and the running performance of the case body 24 can be improved to improve the cleaning workability.
[0044]
  Further, since the chamfer 42 is provided at the lower edge of the tip of the sliding portion 39, the carpet hair is guided and hardly caught like the warped surface 40, and the traveling performance of the case body 24 is improved and the cleaning workability can be improved.
[0045]
  Further, since the dust suction port 37 is provided in the lower case 21 so as to be positioned below the buffer body 23, the projection 49 of the opening / closing body 45 abuts on the furniture and the wall surface, and the opening / closing plate 47 rotates to rotate the dust suction port 37. In the open state, the shock absorber 23 is positioned in front of the case body 24, so that the shock absorber 23 contacts the furniture and the wall surface, and the upper portion of the dust suction port 37 is covered by the shock absorber 23 that contacts the furniture and the wall surface. In this state, a negative pressure state with respect to the atmospheric pressure of the air path constructed from the floor surface to the dust suction port 37 is secured in the furniture and the wall surface, the dust suction efficiency from the dust suction port 37 is improved, dust can be reliably sucked, and cleaning Can be improved.
[0046]
  Further, since the sliding portion 39 constituting the lower edge of the dust suction port 37 is formed in a plate shape, the distance from the dust suction port 37 to the floor surface can be minimized, the dust suction port 37 can efficiently absorb dust, and the suction port body 14 The vertical dimension can be shortened and the size can be reduced.
[0047]
  In addition, in the said embodiment, not only a canister-type electric vacuum cleaner but the upright type | mold whose vacuum inlet main body 14 was directly formed in the lower surface of the vacuum cleaner main body 1, and the vacuum cleaner main body 1 and the suction inlet main body 14 are integrated. It can be applied to a self-propelled electric vacuum cleaner and a handy type.
[0048]
  In the above description, the dust suction port 37 is opened by contacting a surface intersecting the floor surface such as furniture or wall surface. For example, the dust suction port 37 is appropriately set by the setting operation of the operating means 17 provided in the hand of the hose 9. 37 may be opened to absorb the dust.
[0049]
  In addition, the structure for opening the dust suction port 37 when contacting the furniture or the wall surface is not limited to the structure in which the protrusion 49 is provided integrally. A rod-shaped body that is rotated by a solenoid or an electric motor to be opened electrically, or whose tip is movable forward and backward is provided, and an opening / closing plate 47 and a rotating shaft that are connected to the rod-shaped body by retreating the rod-shaped body Any configuration can be adopted, such as rotating 46 and opening mechanically.
[0050]
  Further, although the dust suction port 37 is formed in the front surface of the case body 24, it may be formed in the side surface.
[0051]
  Furthermore, although a plurality of openings are formed, only one may be used.
[0052]
  Further, although the openings are formed in a horizontally long shape, for example, a plurality of circular openings may be provided in parallel or in a lattice shape.
[0053]
  And although it was set as the state which always opened the dust suction mouth 37 with the obstruction maintenance means, such as a torsion coil spring, as mentioned above, it is made to open arbitrarily, not only a torsion coil spring, but a leaf spring, a spring, rubber, etc. An elastic member may be used, or as described above, it may be appropriately opened and closed by a solenoid or an electric motor.
[0054]
  In addition, although the rotary cleaning body 67 and the electric motor 76 are provided and described, these may not be provided. Further, instead of the rotating cleaning body 67, the suction port body 14 is driven or the traveling wheel for assisting the driving is rotated by the electric motor 76, or the rotating cleaning body 67 is rotated by the intake air flow instead of the electric motor 76. Also good.
[0055]
【The invention's effect】
  According to the suction mouth of the vacuum cleaner according to claim 1,The protrusion of the opening / closing body that protrudes outward from the case body rather than the buffer bodyBy contacting the surface that intersects the surface to be cleanedBy the opening / closing plate of the opening / closing bodyThe lower edge portion of the dust suction port that is closed so as to be openable is constituted by a plate-like sliding portion of the case body having a running surface that faces the surface to be cleaned substantially parallel to the lower surface. For example, when cleaning the floor surface, the dust suction port is closed to ensure a negative pressure state with respect to atmospheric pressure in the suction chamber. Dust on the floor is sucked in from the suction port, and when cleaning furniture or walls, the surface of the surface to be cleaned is secured from the dust suction port that prevents the hair from entering the dust suction port by pressing the hair of the carpet by the sliding part. Even if the air path is configured and it is difficult to suck dust from the suction port, for example, dust from furniture or walls is surely sucked from the dust suction port, and even when cleaning uneven surfaces such as carpets with long hairs, etc. The warped surface guides the unevenness of the surface to be cleaned and Since it can be prevented from being caught by the lower edge of the mouth, the running performance of the case body can be improved and the cleaning workability can be improved, and the simple structure of providing a plate-like sliding part can also be applied to the floor, furniture and the wall. Sufficient dust can be absorbed, and cleaning efficiency can be improved. Dust can be sucked from the dust inlet, and cleaning efficiency can be improved.
[0056]
  According to the suction mouth of the vacuum cleaner according to claim 2, in addition to the effect of the suction mouth of the vacuum cleaner according to claim 1,The opening and closing plateThe upper part of the case body is pivotally supported at the upper edge of the dust suction port, and the lower end part is curved in the direction of rotation of the shaft support part toward the inside of the case body. Open and close the dust inlet by turning the shaft supportRukoWith this, dust can be sucked in from the lower side of the opening / closing body through the dust suction opening opened by the rotation of the opening / closing body..
[0057]
  Claim3According to the suction mouth of the vacuum cleaner described in claim 1,Or 2In addition to the effects of the suction mouth of the vacuum cleaner described above, the opening / closing body is provided with a closing holding means that keeps the dust suction opening closed at all times. In order to clean the floor, the negative pressure with respect to the atmospheric pressure in the suction chamber can be secured without leaking from the dust suction port closed by the closing and holding means. This improves the dust absorption efficiency and improves the cleaning efficiency.
[0058]
  Claim4According to the electric vacuum cleaner described above, the cleaning efficiency is improved by sufficiently absorbing dust, for example, even on the floor surface, furniture, and walls with a simple configuration.3Since the suction port body of any one of the vacuum cleaners is provided, the cleaning property can be improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a suction port body in the vicinity of a closed dust suction port according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the same electric vacuum cleaner.
FIG. 3 is a plan view in which the upper case of the suction port body is removed.
FIG. 4 is a front view of the same suction port body.
FIG. 5 is a bottom view of the same suction port body.
FIG. 6 is a side sectional view of the same suction port body.
FIG. 7 is a cross-sectional view showing the vicinity of an open dust suction port of the same suction port body.
[Explanation of symbols]
        1 Vacuum cleaner body
        14 Suction port body
        twenty three    Shock absorber
        24 case body
        30 Suction port
        31 Suction chamber
        37 Dust inlet
        38 Running surface
        39 Sliding part
        40 Warpage
        45 Opening and closing body
        47 Opening and closing plate
        48 Shaft support
        49 Projection

Claims

A case body having a suction chamber that opens a suction port on the lower surface facing the surface to be cleaned, and having a buffer on the peripheral surface ;
A plurality of dust inlets provided in communication with the suction chamber on the peripheral surface of the case body and opening in the outer peripheral direction;
A traveling surface is provided on the case body and forms a lower edge of each of the dust suction openings, and is opposed to the surface to be cleaned substantially parallel to the lower surface, and has an end portion inward of the case body rather than the buffer body. A plurality of plate-like sliding parts located ;
An opening / closing plate attached to the dust suction port at an inner position of the case body relative to the sliding portion, and an outer side of the case body than the buffer body protruding from the opening / closing plate through the dust suction port. And each of the opening and closing plates opens the dust suction port by contacting the surface intersecting the surface to be cleaned. A plurality of opening and closing bodies each closing each possible;
A suction port body for a vacuum cleaner, comprising: a warped surface that is provided between the dust suction ports of the case body and is curved from the lower surface of the case body to the periphery.

The opening / closing plate has a shaft support portion pivotally supported on the inner upper edge portion of the dust suction opening in the case body at the upper portion, and the lower end portion rotates toward the inside of the case body. is formed to be curved along the direction, the shaft suction port body of the electric vacuum cleaner of claim 1 wherein characterized in that you open or close the dust suction port by rotation in branch.

The suction port body of the vacuum cleaner according to claim 1 or 2 , wherein the opening / closing body includes a closing holding means for constantly holding the dust suction port in a closed state.

The vacuum cleaner body,
A vacuum cleaner comprising the suction port of the vacuum cleaner according to any one of claims 1 to 3 connected to the vacuum cleaner body.