JP3938524B2

JP3938524B2 - Suction port and vacuum cleaner

Info

Publication number: JP3938524B2
Application number: JP2002214754A
Authority: JP
Inventors: 保志高井; 篤至森下; 文樹真野; 雄之市野; 善崇杉山
Original assignee: Toshiba TEC Corp
Current assignee: Toshiba TEC Corp
Priority date: 2002-07-24
Filing date: 2002-07-24
Publication date: 2007-06-27
Anticipated expiration: 2022-07-24
Also published as: JP2004049776A

Description

【０００１】
【発明の属する技術分野】
本発明は、吸込開口の前方に開口部が形成され、この開口部に回動体が回動自在に設けられた吸込口体、およびこの吸込口体を用いた電気掃除機に関する。
【０００２】
【従来の技術】
一般に電気掃除機の吸込口体には塵埃吸込室を有する吸込口本体が設けられ、この吸込口本体の底面には塵埃吸込室へ連通した吸込開口が形成されている。このような吸込口体において、吸込開口の前方に開口部が形成されたものが知られている。吸込開口の前方に開口部が形成されていれば、掃除の際に、吸込口本体を前進させて、吸込口本体の前方にある塵埃を開口部を介して効率よく吸い込むことができ、清掃の作業効率が向上する。
【０００３】
しかし、吸込開口の前方に形成された開口部は吸込口本体の前進時または後退時のどちらの場合も開口されたままであるので、開口部を介して吸込開口へ流入する空気量の分だけ吸込開口での空気流速が遅くなり、吸込開口における吸引力が低下して、塵埃を効率よく吸い込むことができない。
【０００４】
そこで、外周面の一部にカット面が形成された回動体を開口部に回動自在に設け、この回動体を、吸込口本体の前進または後退に伴って被清掃面との間に生じる摩擦力により、回動駆動させるようにした吸込口体が同一出願人から提案されている。この回動体は、吸込口本体の前進時には前進方向に対応して順方向に回動されてカット面が被清掃面に対向し、被清掃面との間に間隙を形成する。これにより、吸込口本体前方の外部空間と吸込開口とが間隙を介して連通されるため、吸込口本体の前方にある塵埃を隙間を介して効率よく吸い込むことができる。
【０００５】
また、前記回動体は、吸込口本体の後退時には後退方向に対応して順方向に回動されて被清掃面に密着し、吸込口本体前方の外部空間と吸込開口との連通を遮断する。これにより、吸込口本体の後退時に開口部を介して吸込開口へ流入する空気量が抑制され、吸込開口における吸引力低下が防止されるので、塵埃を効率よく吸い込むことができる。
【０００６】
【発明が解決しようとする課題】
ところで、通常、回動体の外周面には、多数の起毛を有する起毛布が設けられている。このような起毛布を回動体の外周面に設けると、清掃の際に起毛布の起毛が被清掃面に密着するので、特に吸込口本体の後退時の吸引力を高めることができ、さらには起毛によって被清掃面を拭き取ることもできる。
【０００７】
しかしながら、従来では、一種類の起毛布が回動体の外周面全体に設けられているために、吸込口本体を前進または後退させる際の走行荷重（負荷）が大きくなるという欠点がある。すなわち、起毛布には、起毛が立った状態のものと、起毛が寝た状態のものとがあり、前者の起毛布が設けられた回動体では、被清掃面に起毛が直角に当たるので、起毛布と被清掃面との間の摩擦抵抗により吸込口本体の走行荷重が大きくなる。また、後者の起毛布が設けられた回動体では、吸込口本体の前進または後退のどちらかは、毛先の向きに逆らって吸込口本体を移動させることになり、この場合も走行荷重が大きくなる。
【０００８】
本発明の課題は、吸込口本体の前進時および後退時に生じる走行荷重を軽減させることのできる吸込口体、およびその吸込口体を有する電気掃除機を提供することにある。
【０００９】
【課題を解決するための手段】
上記課題を解決するために、本発明の特徴は、起毛布の起毛の方向性を考慮しつつ、起毛布を回動体に設けたことである。例えば、本発明は、塵埃吸込室が設けられ且つ底面に前記塵埃吸込室への吸込開口が設けられた吸込口本体と、前記吸込開口の前方に回動自在に設けられ、吸込口本体の移動に伴って被清掃面との間に生じる摩擦力により回動駆動される回動体と、該回動体の回動範囲を９０度に規制する回動範囲規制部とを備え、前記回動体の外周面には、回動体の円周方向に沿って一側半周部と他側半周部に分割されて起毛布が設けられ、前記一側半周部に設けられた起毛布は、前記吸込口本体の前進時に被清掃面に接触し、かつ毛先が吸込口本体後方へ向いた状態で被清掃面に接触する起毛を有し、前記他側半周部に設けられた起毛布は、前記吸込口本体の後退時に被清掃面に接触し、かつ毛先が吸込口本体前方へ向いた状態で被清掃面に接触する起毛を有する一方、前記回動体は、外周面の一部が削り取られた平坦面を有し、前記吸込口本体の前進時には前進方向に対応して順方向に回動するとともに、前記回動範囲規制部で規制されて前記平坦面と被清掃面との間に間隙を形成する位置で回動が停止して、吸込口本体前方の外部空間と前記吸込開口とを前記間隙を介して連通させる一方、前記平坦面以外の箇所では前記一側半周部に設けられた起毛布が被清掃面に密着し、前記吸込口本体の後退時には、前記回動体は、後退方向に対応して順方向に回動するとともに、前記回動範囲規制部で規制されて前記他側半周部に設けられた起毛布が被清掃面に密着する位置で回動が停止して、吸込口本体前方の外部空間と前記吸込開口との連通を遮断することを特徴としている。
【００１０】
上記構成によれば、吸込口本体の前進時には回動体の一側半周部が被清掃面に接触し、吸込口本体の後退時には回動体の他側半周部が被清掃面に接触する。このとき、一側半周面に設けられた起毛布の起毛は、毛先が吸込口本体後方へ向いた状態で被清掃面に接触し、他側半周面に設けられた起毛布の起毛は、毛先が吸込口本体前方へ向いた状態で被清掃面に接触するので、吸込口本体を前進または後退させた際の、起毛布の起毛と被清掃面との間の摩擦抵抗を低減させることができ、吸込口本体の走行荷重の軽減を図ることが可能となる。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を図面に従って説明する。
図１は、本発明に係る電気掃除機の全体斜視図である。図１において、１は掃除機本体、２は掃除機本体１の図示してない集塵室に配設された紙パックフィルタ等の集塵袋、３は掃除機本体１の後部内に設けられて集塵室に吸込負圧を作用させる電動送風機である。また、４は掃除機本体１に接続されて集塵袋２に連通した集塵ホース、５は集塵ホース４の自由端部に設けられた手元操作管である。
【００１２】
この手元操作管５には操作パネル６が設けられ、また操作パネル６には電動送風機３の吸込風量を選択するスイッチ等が設けられている。さらに、手元操作管５には、延長管７を介して吸込口体１０が接続されている。吸込口体１０は、左右に伸びる吸込口本体１１と、吸込口本体１１の後部に装着された接続管８を有する。この接続管８は延長管７に接続されている。
【００１３】
（実施の形態１）
図２〜図８は実施の形態１を示している。本実施の形態においては、吸込口本体１１は、図５または図６に示すように外側に本体ケース１２が設けられ、この本体ケース１２は、下部ケース１３と、この下部ケース１３上に結合される上部ケース１４等から構成されている。
【００１４】
下部ケース１３の底面には、塵埃を吸引する吸込開口１５が開口されており、この吸込開口１５に回転ブラシ１６が回転可能に配置されている。この回転清掃体１６はブレード１６Ａおよびブラシ１６Ｂを有し、吸込口本体１１内に設けられたモータ（図示省略）により回転駆動される。なお、図２では回転ブラシ１６は省略されている。
【００１５】
また、図２に示すように、下部ケース１３の底面には、吸込口本体１１の移動に伴って回転する検知ローラ１７が設けられ、この検知ローラ１７の回転方向によって吸込口本体１１の前進や後退が検知される。そして、検知ローラ１７での検知結果に基づいて前記モータの回転方向が制御される。また、下部ケース１３の後部には後輪１８（図５または図６参照）が取り付けられている。
【００１６】
本実施の形態では、吸込開口１５の前方に回動体２０が回動自在に設けられている。吸込口本体１１の前部先端には、吸込口本体１１前方の外部空間に連通する凹所２１が形成され、回動体２０は凹所２１内に配置されている。また、凹所２１と吸込開口１５との間には縦壁２２が設けられ、この縦壁２２の下端面は被清掃面Ｍとの間に隙間Ｇを形成している。
【００１７】
回動体２０は、図３に示すように、両端部と中央部に平坦面２３，２４，２５が形成された円柱形状をなし、平坦面２３と２５との間に凸部２６が、平坦面２４と２５との間に凸部２７がそれぞれ設けられている。回動体２０の両端面には支軸２８，２９が設けられ、これら支軸２８，２９は吸込口本体１１の前記凹所２１の両壁面３３，３４（図７および図８参照）に回動自在に取り付けられる。また、回動体２０には、平坦面２３，２４，２５を除いた外周面に、２つに分割された起毛布３０，３１が貼り付けられている。
【００１８】
図４は、図３のＡ−Ａ線に沿った断面を示し、平坦部２５を下方に向けた場合の断面図である。なお、図４において、右側は回動体２０を有する吸込口本体後方であり、左側は吸込口本体前方である。起毛布３０は回動体２０の円周方向に沿って一側半周部ａに設けられ、起毛布３１は回動体２０の円周方向に沿って他側半周部ｂに設けられている。起毛布３０は起毛３０Ａを有し、この起毛３０Ａは毛先が吸込口本体後方へ向いた状態で被清掃面Ｍに接触する。また、起毛布３１は起毛３１Ａを有し、この起毛３１Ａは毛先が吸込口本体前方へ向いた状態で被清掃面Ｍに接触する（図６参照）。
【００１９】
また、図７および図８に示すように、凹所２１の両壁面３３（３４は反対側の壁面）には円弧溝３５が形成され、この円弧溝３５には、回動体２０の両端面に設けられた突起３６（図３参照）が嵌合している。これにより、回動体２０の回動角度は、図６に示すように９０度の範囲に規制されている。なお、図７および図８において、３７は回動体２０両端面の支軸２８，２９の軸受孔である。
【００２０】
さらに、本実施の形態では、図２に示すように、下部ケース１３の前端部には、回動体２０を挟んで両側にカット部１３Ａ，１３Ｂが形成され、吸込口本体１１を勢い良く前進させてもゴミが詰まらないようになっている。
【００２１】
上記構成において、吸込口本体１１を前進させると、図５のように、回動体２０は被清掃面Ｍに密着して前進方向に対応して順方向（矢印で示す反時計回り方向）に回動駆動され、平坦面２５を下方に向けた状態となる。このとき、回動体２０は、他側半周部ｂが被清掃面Ｍに接触しているときは、起毛布３１と被清掃面Ｍとの間に生じる摩擦力により、吸込口本体１１の前進方向に対応して順方向に容易に回動する。また、一側半周部ａが被清掃面Ｍに接触しているときは、起毛布３０の起毛３０Ａは毛先が吸込口本体後方へ向いた状態で被清掃面Ｍに接触するので、起毛布３０と被清掃面Ｍとの間の摩擦力は小さくなり、これにより、吸込口本体１１前進時の走行荷重を軽減することができる。なお、吸込口本体１１を前進させたとき、回動体２０両端面の突起３６が円弧溝３５に案内されて、回動体２０は図７に示した状態で回動が止まり、これ以上は回動しない。
【００２２】
吸込口本体１１を後退させると、図６のように、回動体２０は被清掃面Ｍに密着して後退方向に対応して順方向（矢印で示す時計回り方向）に回動駆動され、平坦面２５を前方に向けた状態となる。このとき、回動体２０は、一側半周部ａが被清掃面Ｍに接触しているときは、起毛布３０と被清掃面Ｍとの間に生じる摩擦力により、吸込口本体１１の後退方向に対応して順方向に容易に回動する。また、他側半周部ｂが被清掃面Ｍに接触しているときは、起毛布３１の起毛３１Ａは毛先が吸込口本体前方へ向いた状態で被清掃面Ｍに接触するので、起毛布３１と被清掃面Ｍとの間の摩擦力は小さくなり、これにより、吸込口本体１１後退時の走行荷重を軽減することができる。なお、吸込口本体１１を後退させたとき、回動体２０両端面の突起３６が円弧溝３５に案内されて、回動体２０は図８に示した状態で回動が止まり、これ以上は回動しない。
【００２３】
本実施の形態によれば、吸込口本体１１の走行荷重を軽減することができるので、掃除を比較的楽に行うことが可能となる。
【００２４】
（実施の形態２）
図９〜図１２は実施の形態２を示している。本実施の形態には、完全な円柱形状の回動体４０が設けられている。回動体４０は、図９に示すように、完全な円柱をなしており、その両端面には支軸４１，４２が設けられている。また、回動体４０の両端面には、図７および図８で示した円弧溝３５に嵌合可能な突起４３が設けられている。
【００２５】
回動体４０の外周面には、２つに分割された起毛布４４，４５が貼り付けられている。図１０は、図９のＢ−Ｂ線に沿った断面図であり、この図において、右側は回動体４０を有する吸込口本体後方であり、左側は吸込口本体前方である。起毛布４４は回動体４０の円周方向に沿って一側半周部ｃに設けられ、起毛布４５は回動体４０の円周方向に沿って他側半周部ｄに設けられている。起毛布４４は起毛４４Ａを有し、この起毛４４Ａは毛先が吸込口本体１１後方側へ向いた状態で被清掃面Ｍに接触する。また、起毛布４５は起毛４５Ａを有し、この起毛４５Ａは毛先が吸込口本体１１前方側へ向いた状態で被清掃面Ｍに接触する（図１２参照）。
【００２６】
本実施の形態の構成においても、実施の形態１の場合と同様、吸込口本体１１の前進時に起毛布４４と被清掃面Ｍとの間の摩擦抵抗、および吸込口本体１１の後退時に起毛布４５と被清掃面Ｍとの間の摩擦抵抗を低減することができ、これによって、吸込口本体１１の走行荷重を軽減することが可能となる。
【００２７】
【発明の効果】
以上説明したように、本発明によれば、吸込口本体の前進時および後退時に起毛布の起毛と被清掃面との間に生じる摩擦抵抗を低減させることができるので、吸込口本体の走行荷重を軽減することが可能となる。
【図面の簡単な説明】
【図１】本発明に係る電気掃除機の全体斜視図である。
【図２】実施の形態１による吸込口本体の底面斜視図である。
【図３】回動体の斜視図である。
【図４】図３のＡ−Ａ線に沿った断面を示し、平坦部を下にした場合の図である。
【図５】図２に示した吸込口本体の前進時における要部断面図である。
【図６】図２に示した吸込口本体の後退時における要部断面図である。
【図７】回動体の回動角度を規制する機構を説明した図である。
【図８】回動体の回動角度を規制する機構を説明した図である。
【図９】実施の形態２による回動体の斜視図である。
【図１０】図９のＢ−Ｂ線に沿った断面図である。
【図１１】図９の回動体を有する吸込口本体の前進時における要部断面図である。
【図１２】図９の回動体を有する吸込口本体の後退時における要部断面図である。
【符号の説明】
１掃除機本体
１０吸込口体
１１吸込口本体
１５吸込開口
２０回動体
２５平坦面
３０，３１起毛布
３０Ａ，３１Ａ起毛
４０回動体
４４，４５起毛布
４４Ａ，４５Ａ起毛[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suction port body in which an opening is formed in front of a suction opening and a rotating body is rotatably provided in the opening, and a vacuum cleaner using the suction port body.
[0002]
[Prior art]
Generally, a suction port body of a vacuum cleaner is provided with a suction port body having a dust suction chamber, and a suction opening communicating with the dust suction chamber is formed on the bottom surface of the suction port body. In such a suction port body, one having an opening formed in front of the suction opening is known. If an opening is formed in front of the suction opening, when cleaning, the suction body can be moved forward, and dust in front of the suction body can be efficiently sucked in through the opening. Work efficiency is improved.
[0003]
However, the opening formed in front of the suction opening remains open regardless of whether the suction port body is moving forward or backward, so that the amount of air flowing into the suction opening through the opening is sucked in by the amount of air. The air flow rate at the opening becomes slow, the suction force at the suction opening decreases, and dust cannot be sucked in efficiently.
[0004]
Therefore, a rotating body having a cut surface formed on a part of the outer peripheral surface is rotatably provided in the opening, and this rotating body is subjected to friction generated between the surface to be cleaned as the suction port body moves forward or backward. The same applicant has proposed a suction port which is driven to rotate by force. This rotating body is rotated in the forward direction corresponding to the forward direction when the suction port body moves forward, the cut surface faces the surface to be cleaned, and a gap is formed between the surface to be cleaned. As a result, the external space in front of the suction port body and the suction opening are communicated with each other through the gap, so that dust in front of the suction port body can be efficiently sucked through the gap.
[0005]
Further, when the suction port body is retracted, the rotating body is rotated in the forward direction corresponding to the retreating direction and is brought into close contact with the surface to be cleaned, thereby blocking communication between the external space in front of the suction port body and the suction opening. As a result, the amount of air flowing into the suction opening via the opening when the suction port body is retracted is suppressed, and a reduction in suction force at the suction opening is prevented, so that dust can be sucked in efficiently.
[0006]
[Problems to be solved by the invention]
By the way, normally, the raising cloth which has many raising is provided in the outer peripheral surface of the rotary body. When such a raised cloth is provided on the outer peripheral surface of the rotating body, the raising of the raised cloth closely adheres to the surface to be cleaned at the time of cleaning. The surface to be cleaned can also be wiped off by raising.
[0007]
However, conventionally, since one type of raised cloth is provided on the entire outer peripheral surface of the rotating body, there is a disadvantage that a traveling load (load) when the suction port body moves forward or backward increases. In other words, there are brushed fabrics in the raised state and those in the raised state, and in the rotating body provided with the former raised fabric, the raised fabric hits the surface to be cleaned at a right angle. The running load of the suction port body is increased by the frictional resistance between the blanket and the surface to be cleaned. Further, in the rotating body provided with the latter raised cloth, either the forward or backward movement of the suction port body moves the suction port body against the direction of the hair tips, and in this case also the traveling load is large. Become.
[0008]
The subject of this invention is providing the vacuum cleaner which has the suction inlet body which can reduce the running load which arises at the time of advance of a suction inlet main body, and backward movement, and the suction inlet body.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is characterized in that a raised cloth is provided on a rotating body in consideration of the direction of raising of the raised cloth. For example, the present invention includes a suction port body provided with a dust suction chamber and having a suction opening to the dust suction chamber on the bottom surface, and is provided rotatably in front of the suction opening. A rotating body that is rotationally driven by a frictional force generated between the surface and the surface to be cleaned, and a rotation range restricting portion that restricts the rotation range of the rotating body to 90 degrees, and the outer periphery of the rotating body The surface is provided with a raised cloth that is divided into one half-circumference part and the other half-circumference part along the circumferential direction of the rotating body, and the raised cloth provided on the one-side half circumference part of the suction port body The brushed cloth provided in the other half circumference part has the raising which contacts the to-be-cleaned surface in the state which contacts the to-be-cleaned surface at the time of advance, and the hair tip has turned to the suction mouth main part back, The above-mentioned suction mouth body Napping that comes into contact with the surface to be cleaned when retreating and the hair tip is in front of the suction port body Having one, the rotating member has a flat surface which is partially cut away of the outer peripheral surface, with during forward of the suction inlet main body is rotated in the forward direction corresponding to the forward direction, the rotation range restricting portion in and is restricted to stop rotation is in a position to form a gap between the flat surface and the surface to be cleaned, while the said suction opening and the suction port main body in front of the outer space Ru communicated through said gap the raised fabric that is provided on the one side half portion at a portion other than the flat surface in close contact with the surface to be cleaned, during retraction of the suction port body, wherein the rotary body is rotating in the forward direction corresponding to the backward direction And the rotation is stopped at a position where the raised cloth provided on the other half circumference portion is in close contact with the surface to be cleaned, and is controlled by the rotation range restricting portion, and the external space in front of the suction port body and the It is characterized by blocking communication with the suction opening.
[0010]
According to the above configuration, when the suction port main body moves forward, one side half of the rotating body contacts the surface to be cleaned, and when the suction port main body moves backward, the other half periphery of the rotating body contacts the surface to be cleaned. At this time, the raising of the raised cloth provided on the one half circumferential surface is in contact with the surface to be cleaned in a state where the hair tip faces the back of the suction port body, and the raising of the raised cloth provided on the other half circumferential surface is Since the hair tip contacts the surface to be cleaned with the front of the suction port facing forward, the frictional resistance between the raising of the raised cloth and the surface to be cleaned when the suction port main body is moved forward or backward is reduced. It is possible to reduce the running load of the suction port body.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view of a vacuum cleaner according to the present invention. In FIG. 1, 1 is a vacuum cleaner body, 2 is a dust collection bag such as a paper pack filter disposed in a dust collection chamber (not shown) of the vacuum cleaner body 1, and 3 is provided in a rear portion of the vacuum cleaner body 1. This is an electric blower that applies suction negative pressure to the dust collection chamber. Reference numeral 4 denotes a dust collection hose connected to the vacuum cleaner main body 1 and communicated with the dust collection bag 2, and 5 is a hand control tube provided at the free end of the dust collection hose 4.
[0012]
The hand control tube 5 is provided with an operation panel 6, and the operation panel 6 is provided with a switch for selecting a suction air volume of the electric blower 3. Further, a suction port body 10 is connected to the hand operation tube 5 via an extension tube 7. The suction port body 10 includes a suction port body 11 extending in the left-right direction and a connecting pipe 8 attached to the rear portion of the suction port body 11. The connection pipe 8 is connected to the extension pipe 7.
[0013]
(Embodiment 1)
2 to 8 show the first embodiment. In the present embodiment, the suction port main body 11 is provided with a main body case 12 on the outer side as shown in FIG. 5 or 6, and the main body case 12 is coupled to the lower case 13 and the lower case 13. Upper case 14 and the like.
[0014]
A suction opening 15 for sucking dust is opened on the bottom surface of the lower case 13, and a rotary brush 16 is rotatably disposed in the suction opening 15. The rotary cleaning body 16 has a blade 16A and a brush 16B, and is rotationally driven by a motor (not shown) provided in the suction port body 11. In FIG. 2, the rotating brush 16 is omitted.
[0015]
In addition, as shown in FIG. 2, a detection roller 17 that rotates as the suction port body 11 moves is provided on the bottom surface of the lower case 13, and the suction port body 11 moves forward or backward depending on the rotation direction of the detection roller 17. Retreat is detected. The rotation direction of the motor is controlled based on the detection result of the detection roller 17. A rear wheel 18 (see FIG. 5 or FIG. 6) is attached to the rear portion of the lower case 13.
[0016]
In the present embodiment, a rotating body 20 is rotatably provided in front of the suction opening 15. A recess 21 communicating with the external space in front of the suction port body 11 is formed at the front end of the suction port body 11, and the rotating body 20 is disposed in the recess 21. A vertical wall 22 is provided between the recess 21 and the suction opening 15, and a gap G is formed between the lower end surface of the vertical wall 22 and the surface to be cleaned M.
[0017]
As shown in FIG. 3, the rotating body 20 has a cylindrical shape in which flat surfaces 23, 24, and 25 are formed at both ends and a central portion, and a convex portion 26 is formed between the flat surfaces 23 and 25. Protrusions 27 are provided between 24 and 25, respectively. Support shafts 28 and 29 are provided on both end surfaces of the rotating body 20, and these support shafts 28 and 29 rotate to both wall surfaces 33 and 34 (see FIGS. 7 and 8) of the recess 21 of the suction inlet body 11. Can be attached freely. The rotating body 20 is affixed with brushed cloths 30 and 31 divided into two on the outer peripheral surface excluding the flat surfaces 23, 24 and 25.
[0018]
FIG. 4 is a cross-sectional view showing a cross section taken along the line AA in FIG. 3 and the flat portion 25 facing downward. In FIG. 4, the right side is the rear of the suction port body having the rotating body 20, and the left side is the front of the suction port body. The raised cloth 30 is provided in the one-side half-circumferential part a along the circumferential direction of the rotating body 20, and the raised cloth 31 is provided in the other-side half-circumferential part b along the circumferential direction of the rotating body 20. The raised cloth 30 has raised hairs 30A, and the raised hairs 30A come into contact with the surface to be cleaned M in a state where the hair tips are directed toward the rear of the suction port body. Further, the raised cloth 31 has raised hairs 31A, and the raised hairs 31A come into contact with the surface to be cleaned M in a state where the hair tips face the front of the suction port body (see FIG. 6).
[0019]
Further, as shown in FIGS. 7 and 8, arc grooves 35 are formed in both wall surfaces 33 (34 is the opposite wall surface) of the recess 21, and the arc grooves 35 are formed on both end surfaces of the rotating body 20. The provided projection 36 (see FIG. 3) is fitted. Thereby, the rotation angle of the rotating body 20 is regulated to a range of 90 degrees as shown in FIG. 7 and 8, reference numeral 37 denotes a bearing hole for the support shafts 28 and 29 on both end surfaces of the rotating body 20.
[0020]
Further, in the present embodiment, as shown in FIG. 2, cut portions 13A and 13B are formed on both sides of the front end portion of the lower case 13 with the rotating body 20 interposed therebetween, and the suction port body 11 is moved forward vigorously. Even so, it won't clog the garbage.
[0021]
In the above configuration, when the suction port body 11 is moved forward, the rotating body 20 is brought into close contact with the surface M to be cleaned and rotates in the forward direction (counterclockwise direction indicated by the arrow) corresponding to the forward direction as shown in FIG. It is dynamically driven and the flat surface 25 is in a state of facing downward. At this time, when the other-side half-peripheral part b is in contact with the surface to be cleaned M, the rotating body 20 is driven forward by the friction force generated between the raised cloth 31 and the surface to be cleaned M. It easily rotates in the forward direction corresponding to Further, when the one-side half-circumferential part a is in contact with the surface to be cleaned M, the raised hair 30A of the raised cloth 30 is in contact with the surface to be cleaned M with the hair tip facing the back of the suction port body. The frictional force between the surface 30 and the surface to be cleaned M becomes small, and thus the traveling load when the suction port body 11 moves forward can be reduced. When the suction port body 11 is moved forward, the protrusions 36 on both end surfaces of the rotating body 20 are guided by the arc grooves 35, and the rotating body 20 stops rotating in the state shown in FIG. do not do.
[0022]
When the suction port body 11 is moved backward, as shown in FIG. 6, the rotating body 20 is brought into close contact with the surface M to be cleaned and is driven to rotate in the forward direction (clockwise direction indicated by the arrow) corresponding to the retracted direction. The surface 25 is directed forward. At this time, when the one-side half-circumferential part a is in contact with the surface to be cleaned M, the rotating body 20 is moved backward in the suction port body 11 by the frictional force generated between the raised cloth 30 and the surface to be cleaned M. It easily rotates in the forward direction corresponding to Moreover, when the other side half circumference part b is contacting the to-be-cleaned surface M, since the raising 31A of the raising cloth 31 is in contact with the to-be-cleaned surface M in the state where the hair end faced the suction inlet main body front, raising cloth The frictional force between the surface 31 and the surface to be cleaned M is reduced, thereby reducing the running load when the suction port body 11 is retracted. When the suction port body 11 is retracted, the protrusions 36 on both ends of the rotating body 20 are guided by the arc grooves 35, and the rotating body 20 stops rotating in the state shown in FIG. do not do.
[0023]
According to the present embodiment, it is possible to reduce the traveling load of the suction inlet main body 11, so that cleaning can be performed relatively easily.
[0024]
(Embodiment 2)
9 to 12 show the second embodiment. In this embodiment, a complete columnar rotating body 40 is provided. As shown in FIG. 9, the rotating body 40 forms a complete cylinder, and support shafts 41 and 42 are provided on both end faces thereof. In addition, protrusions 43 that can be fitted into the circular arc grooves 35 shown in FIGS. 7 and 8 are provided on both end faces of the rotating body 40.
[0025]
Brushed cloths 44 and 45 divided into two parts are attached to the outer peripheral surface of the rotating body 40. FIG. 10 is a cross-sectional view taken along line B-B in FIG. 9, in which the right side is the rear of the suction port body having the rotating body 40 and the left side is the front of the suction port body. The raised cloth 44 is provided in the one-side half circumference c along the circumferential direction of the rotating body 40, and the raised cloth 45 is provided in the other-side half circumference d along the circumferential direction of the rotating body 40. The raising cloth 44 has raising 44A, and this raising 44A contacts the to-be-cleaned surface M in the state where the hair end faced the suction inlet main body 11 rear side. Moreover, the raising cloth 45 has raising 45A, and this raising 45A contacts the to-be-cleaned surface M in the state which the hair end faced the suction inlet main body 11 front side (refer FIG. 12).
[0026]
Also in the configuration of the present embodiment, as in the case of the first embodiment, the friction resistance between the raised cloth 44 and the surface to be cleaned M when the suction port body 11 moves forward, and the raised cloth when the suction port body 11 moves backward. The frictional resistance between the surface 45 and the surface to be cleaned M can be reduced, and thereby the running load of the suction port body 11 can be reduced.
[0027]
【The invention's effect】
As described above, according to the present invention, the frictional resistance generated between the raising of the raised cloth and the surface to be cleaned can be reduced when the suction port body moves forward and backwards. Can be reduced.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a vacuum cleaner according to the present invention.
2 is a bottom perspective view of a suction port body according to Embodiment 1. FIG.
FIG. 3 is a perspective view of a rotating body.
4 is a cross-sectional view taken along the line AA in FIG. 3, and is a view when a flat portion is on the bottom. FIG.
FIG. 5 is a cross-sectional view of the main part when the suction port body shown in FIG. 2 is advanced.
6 is a cross-sectional view of the main part when the suction port body shown in FIG. 2 is retracted. FIG.
FIG. 7 is a diagram illustrating a mechanism that regulates a rotation angle of a rotating body.
FIG. 8 is a diagram illustrating a mechanism that regulates a rotation angle of a rotating body.
FIG. 9 is a perspective view of a rotating body according to a second embodiment.
10 is a cross-sectional view taken along line BB in FIG.
11 is a cross-sectional view of the main part when the suction port body having the rotating body of FIG. 9 is advanced.
12 is a cross-sectional view of the main part when the suction port body having the rotating body of FIG. 9 is retracted. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 10 Suction port body 11 Suction port main body 15 Suction opening 20 Rotating body 25 Flat surface 30, 31 Brushed cloth 30A, 31A Brushed 40 Rotating body 44, 45 Brushed cloth 44A, 45A Brushed

Claims

A suction port body provided with a dust suction chamber and having a suction opening to the dust suction chamber on the bottom surface, and a surface to be cleaned as the suction port body moves in a freely rotatable manner in front of the suction opening body. A rotating body that is rotationally driven by a frictional force generated between and a rotation range restricting portion that restricts the rotation range of the rotating body to 90 degrees ,
On the outer peripheral surface of the rotating body, a raised cloth is provided by being divided into a half-periphery part on one side and a half-periphery part on the other side along the circumferential direction of the rotating body,
The raised cloth provided on the one-side half-periphery portion has raised hairs that come into contact with the surface to be cleaned when the suction port body moves forward, and that contact with the surface to be cleaned with the hair tips facing toward the rear of the suction port body. ,
While the raised cloth provided in the other half circumference part has the raising which contacts the surface to be cleaned in the state where the tip of the suction port main body is in contact with the surface to be cleaned when the suction port main body is retreated, ,
The rotating body has a flat surface in which a part of the outer peripheral surface is scraped off, and when the suction port body moves forward, the rotating body rotates in the forward direction corresponding to the forward direction and is restricted by the turning range restricting portion. the flat surface and the stop is pivoted position for forming a gap between the surface to be cleaned, while the said suction opening and the suction port main body in front of the outer space Ru communicated through the gap, the flat Te In places other than the surface, the raised cloth provided in the one-side half-peripheral portion is in close contact with the surface to be cleaned ,
When the suction port body is retracted, the rotating body rotates in a forward direction corresponding to the retracting direction, and a raised cloth provided on the other half circumference is restricted by the rotation range restricting portion. A suction port body characterized in that the rotation stops at a position in close contact with the cleaning surface and blocks communication between the external space in front of the suction port body and the suction opening.

A vacuum cleaner comprising the suction port according to claim 1.