EP2152135B1 - Nozzle for a floor cleaning device - Google Patents

Nozzle for a floor cleaning device Download PDF

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Publication number
EP2152135B1
EP2152135B1 EP08749186A EP08749186A EP2152135B1 EP 2152135 B1 EP2152135 B1 EP 2152135B1 EP 08749186 A EP08749186 A EP 08749186A EP 08749186 A EP08749186 A EP 08749186A EP 2152135 B1 EP2152135 B1 EP 2152135B1
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EP
European Patent Office
Prior art keywords
suction mouth
mouth edge
nozzle
floor
floor nozzle
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EP08749186A
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German (de)
French (fr)
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EP2152135A2 (en
Inventor
Martin Behrenswerth
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Miele und Cie KG
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Miele und Cie KG
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Priority to PL08749186T priority Critical patent/PL2152135T3/en
Publication of EP2152135A2 publication Critical patent/EP2152135A2/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
    • 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
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0666—Nozzles with fixed, e.g. adjustably fixed brushes or the like with tilting, floating or similarly arranged brushes, combs, lips or pads

Definitions

  • the invention relates to a nozzle for a floor care appliance for cleaning surfaces such as textile floor coverings and smooth floors, with a sliding sole disposed on the underside, in which an opening in the form of a suction mouth is arranged, from which leads to a connection piece an intake duct, wherein the suction mouth is limited by suction mouth edges in the thrust direction of the floor nozzle, wherein the rear suction mouth edge is designed to pivot about an axis extending transversely to the thrust direction, wherein the rear Saugmundkante a rear pivot stop limit and a front pivot stop limit is assigned, and wherein the rear Saugmundkante when resting on front pivot stop and non-resting floor nozzle protrudes from the support plane of the floor nozzle.
  • An aforementioned floor nozzle is for example from the DE-OS 2 139 157 known.
  • a Quetschlippe of metal or plastic is arranged in the area of action of the suction mouth, which is pivotable between a front oblique position and a rear oblique position.
  • Floor jets are connected to a suction pipe via the connection pipe in the case of vacuum cleaners and hand vacuum cleaners, and are continuously advanced and pulled back to clean a floor surface.
  • the floor nozzles usually have a retractable bristle rim, the dirt then collects within this ring and is absorbed.
  • the bristle rim is retracted and therefore not active.
  • the carpet pile is bent up by the suction mouth edges on the sliding sole in the direction of movement. As a result, the suction flow passes between the individual pile fibers and the floor nozzle can also absorb the dust that adheres to the bottom of the pile.
  • the floor nozzle When retracting the floor nozzle on high-pile carpets, the floor nozzle rises slightly in the rear area. This limits the mechanical effect of the rear suction mouth edge on the carpet pile, removing less dust from the carpet. During feed, the rear suction mouth edge is pressed lightly into the carpet and therefore increases the resistance to movement.
  • Both the front and the rear suction mouth are formed by a pivotable plow.
  • the end portions of the plow ridges are raised with respect to so-called Gleitquerkanten, but they are both during the feed and during retraction above the support plane of the floor nozzle, which is formed here by front Stützröllchen and rear support wheels.
  • the invention thus raises the problem of improving a floor nozzle of the type mentioned in that it ensures a satisfactory cleaning result and a high level of user comfort despite its simple structure, even on deep-pile carpets.
  • the achievable with the invention advantages are that on the one hand reduces the resistance to movement during the advance of the floor nozzle and on the other hand when retracting the floor nozzle, the mechanical action is increased to a carpet. This is achieved by the fact that the rear suction mouth edge protrudes from the bearing level of the floor nozzle when resting against the front pivot stop stop and not lying floor nozzle. This achieves a deeper penetration into the carpet when pulled back. At the feed, where the rear suction mouth then pivots away from this active position, the front swing limit stop should not prevent forward movement. Therefore, he should stand back against the support level of the floor nozzle.
  • restoring forces act in the direction of the front suction mouth edge on the rear suction mouth edge.
  • the rear suction mouth edge is formed by the lower edge of an elastic lip. It is advantageous if the lip in the region of the pivot axis has a greater elasticity than in the support area on the surface to be cleaned. This will cause the lip to bend away prevents the retraction of the nozzle and thereby sufficient bending forces are brought to the pile.
  • the rear suction mouth edge is associated with a rear pivot limiting stop. This prevents a bending back of this edge to an area in which they would no longer actively seal the suction mouth. It is expedient if the rear pivot stop limits the pivoting angle of the rear suction mouth edge in the direction of the connection piece such that it is from a position perpendicular to the support plane of the floor nozzle between 45 ° and 90 °, preferably about 70 °.
  • the rear suction mouth edge is associated with a front pivot limiting stop.
  • the front pivot limiting stop limits the pivoting angle of the rear suction mouth edge in the direction of the front suction mouth edge such that the rear suction mouth edge is in contact with the front pivot limiting stop in an at least approximately vertical position to the support plane.
  • FIG. 1 An embodiment of the invention is shown purely schematically in a drawing and will be described in more detail below.
  • the figure shows a cross section through an inventively designed nozzle 1, which is suitable for example in conjunction with a floor or hand vacuum cleaner for cleaning textile floor coverings and smooth floors.
  • It comprises a plastic housing 2, which merges into a pivotally mounted connection piece 3.
  • rollers 4 are arranged to facilitate guidance and movement of the nozzle.
  • a sliding sole 5 is used, which is usually made of plastic or a thermoformed sheet metal part. Between the edge of the sliding sole 5 and the housing side walls 6, a circumferential, height-adjustable bristle ring 7 is arranged. The adjustment is not relevant to the invention and therefore not further described.
  • the sliding sole 5 is a square opening, the so-called suction mouth 8. From the suction mouth 8, an intake passage 9 extends to the connecting piece. 3
  • the suction mouth 8 is formed by a front suction mouth edge 81 and a rear suction mouth edge 82.
  • the floor nozzle 1 in the thrust direction symbolized in the figure by the double arrow 10
  • the front Saugmundkante 81 and the lowest points 41 of the rollers are on and thus form a support plane, which is symbolized by the line 11.
  • the front suction mouth edge 81 is formed from the sliding sole 5
  • the rear suction mouth edge 82 is formed by the lower edge of an elastic lip 83, the latter being fixed in a receptacle 51 provided in the sliding sole 5.
  • the lip 83 is made in a two-component injection molding process, the portion 84, which has contact with the floor covering, consists of a hard material.
  • the material portion 85 in the region of the receptacle 51 has a greater elasticity.
  • the lip 83 or the rear suction mouth edge 82 is designed to be pivotable about an axis extending transversely to the direction of thrust, as symbolized by the dashed double arrow 86.
  • a resilient hinge for fastening the lip 83 or rear suction mouth edge 82 can be used. Such an embodiment is not shown in the drawings. If the nozzle 1 does not rest on the ground, the lower edge 82 of the lip protrudes by a dimension D between 0.5 mm and 4 mm beyond the support plane, this is shown in an enlarged section A.
  • the space behind the lip 83 is such that it functions as a rear pivot limiting stop 87 for the rear suction mouth edge 82.
  • the inclination of the sliding sole 5 in this area allows a pivoting angle of the lip 83 and rear suction mouth edge 82 of approximately 45 ° to 90 °, preferably of approximately 70 ° to the vertical (with respect to the support plane).
  • a rigid web 88 In front of the rear suction mouth edge 82 is a rigid web 88, which remains by the dimension d between 0.5 mm and 4 mm with respect to the support plane.
  • the web 88 forms a front pivot limiting stop, so that the spring back lip 83 remains approximately in the vertical position (with respect to the support plane).
  • the rear flexible suction mouth edge 82 no longer causes an increase in the pushing force as in a conventional floor nozzle 1.
  • the lip 83 pivots backwards and is pushed over the floor covering at a flat adjusted angle.
  • a good seal of the intake passage 9 is guaranteed to cleaning surface regardless of the pile height.
  • the rear suction mouth edge 82 When retracting the floor nozzle 1, the rear suction mouth edge 82 is relevant for good dust absorption efficiency. As a result of the above-described slight lifting of the rear region of the floor nozzle 1, the rear suction mouth edge 82 in conventional floor nozzles 1 would no longer strike the carpet pile as effectively. Since the flexible suction mouth edge 82 described here is made longer overall and is supported perpendicular to the floor covering on the front limit stop (web 88), the contact with the carpet pile is unevenly more aggressive than with conventional floor nozzles. This achieves an increase in the dust-collecting efficiency.
  • the lip 83 Due to the ground contact, which takes place during use of the nozzle 1, the lip 83 while retracting the nozzle 1, although slightly bent in the direction of the front suction mouth edge 81, but it remains ensured that the lip 83 penetrates deeper into the pile than the front suction mouth edge 81. This ensures that even a short pile is bent.

Abstract

A nozzle for a floor care appliance for cleaning surfaces. The nozzle includes a gliding sole disposed on a bottom side of the floor nozzle and has a suction mouth opening. A suction duct extends from the opening to a connection piece. A front suction mouth edge and a rear suction mouth edge bound the suction mouth with respect to a pushing direction of the floor nozzle. A rear pivot limit stop associated with the rear suction mouth edge and a front pivot limit stop associated with the rear suction mouth edge are included. The rear suction mouth edge projects beyond a plane of contact of the nozzle with the surface when the rear suction mouth edge engages the front pivot limit stop and when the floor nozzle is in a non-contacting position. The front pivot limit stop limits the pivoting angle of the rear suction mouth edge in a direction toward the front suction mouth edge such that the rear suction mouth edge is in a substantially vertical position with respect to the plane of contact when the rear suction mouth edge engages the front pivot limit stop.

Description

Die Erfindung betrifft eine Düse für ein Bodenpflegegerät zur Reinigung von Flächen wie textilen Bodenbelägen und glatten Böden, mit einer auf der Unterseite angeordneten Gleitsohle, in der eine Öffnung in Form eines Saugmundes angeordnet ist, von der zu einem Anschlussstutzen ein Ansaugkanal führt, wobei der Saugmund in Schubrichtung der Bodendüse durch Saugmundkanten begrenzt wird, wobei die hintere Saugmundkante um eine quer zur Schubrichtung verlaufende Achse schwenkbar ausgebildet ist, wobei der hinteren Saugmundkante ein hinterer Schwenkbegrenzungs-Anschlag und ein vorderer Schwenkbegrenzungs-Anschlag zugeordnet ist, und wobei die hintere Saugmundkante bei Anlage am vorderen Schwenkbegrenzungs-Anschlag und nicht aufliegender Bodendüse aus der Auflageebene der Bodendüse hervorsteht.The invention relates to a nozzle for a floor care appliance for cleaning surfaces such as textile floor coverings and smooth floors, with a sliding sole disposed on the underside, in which an opening in the form of a suction mouth is arranged, from which leads to a connection piece an intake duct, wherein the suction mouth is limited by suction mouth edges in the thrust direction of the floor nozzle, wherein the rear suction mouth edge is designed to pivot about an axis extending transversely to the thrust direction, wherein the rear Saugmundkante a rear pivot stop limit and a front pivot stop limit is assigned, and wherein the rear Saugmundkante when resting on front pivot stop and non-resting floor nozzle protrudes from the support plane of the floor nozzle.

Eine vorgenannte Bodendüse ist beispielsweise aus der DE-OS 2 139 157 bekannt. Dort ist im Wirkungsbereich des Saugmunds eine Quetschlippe aus Metall oder Kunststoff angeordnet, die zwischen einer vorderen schrägen Position und einer hinteren schrägen Position schwenkbar ist.An aforementioned floor nozzle is for example from the DE-OS 2 139 157 known. There, a Quetschlippe of metal or plastic is arranged in the area of action of the suction mouth, which is pivotable between a front oblique position and a rear oblique position.

Bodendüsen werden bei Bodenstaubsaugern und Handstaubsaugern über den Anschlussstutzen mit einem Saugrohr verbunden und zur Reinigung einer Bodenfläche im kontinuierlichen Wechsel vorgeschoben und zurückgezogen. Zur Reinigung von Glattböden besitzen die Bodendüsen in der Regel einen ausfahrbaren Borstenkranz, der Schmutz sammelt sich dann innerhalb dieses Kranzes und wird aufgesaugt. Bei der Reinigung von Teppichen ist der Borstenkranz eingefahren und deshalb nicht aktiv. Hier wird während des Saugvorgangs der Teppichflor durch die Saugmundkanten an der Gleitsohle in Bewegungsrichtung aufgebogen. Dadurch gelangt der Saugstrom zwischen die einzelnen Florfasern und die Bodendüse kann auch den Staub aufnehmen, der auf dem Grund des Flors haftet.Floor jets are connected to a suction pipe via the connection pipe in the case of vacuum cleaners and hand vacuum cleaners, and are continuously advanced and pulled back to clean a floor surface. To clean smooth floors, the floor nozzles usually have a retractable bristle rim, the dirt then collects within this ring and is absorbed. When cleaning carpets, the bristle rim is retracted and therefore not active. Here, during the suction process, the carpet pile is bent up by the suction mouth edges on the sliding sole in the direction of movement. As a result, the suction flow passes between the individual pile fibers and the floor nozzle can also absorb the dust that adheres to the bottom of the pile.

Beim Zurückziehen der Bodendüse auf hochflorigen Teppichen hebt sich die Bodendüse im hinteren Bereich leicht an. Dadurch wird die mechanische Wirkung der hinteren Saugmundkante auf den Teppichflor eingeschränkt, es wird weniger Staub aus dem Teppich entfernt. Beim Vorschub wird die hintere Saugmundkante leicht in den Teppich gedrückt und vergrößert deshalb den Bewegungswiderstand.When retracting the floor nozzle on high-pile carpets, the floor nozzle rises slightly in the rear area. This limits the mechanical effect of the rear suction mouth edge on the carpet pile, removing less dust from the carpet. During feed, the rear suction mouth edge is pressed lightly into the carpet and therefore increases the resistance to movement.

Zur Verbesserung dieser Nachteile wird in der EP 1 320 317 B1 vorgeschlagen, die Bodenplatte mit einem Kippmechanismus auszustatten, mittels dessen beim Vorschub die vordere und beim Zurückziehen die hintere Saugmundkante abgesenkt wird. Die Luftführung vom Saugmund über den Ansaugkanal zum Anschlussstutzen muss zur Vermeidung von Saugkraftverlusten gut abgedichtet sein, dies bereitet bei einer beweglichen Bodenplatte Schwierigkeiten bzw. ist nur mit hohem Aufwand erreichbar.To improve these disadvantages is in the EP 1 320 317 B1 proposed to equip the bottom plate with a tilting mechanism, by means of which the front and when retracting the rear suction mouth edge is lowered during the feed. The air flow from the suction mouth via the intake duct to the connection piece must be good to avoid suction losses be sealed, this is difficult for a movable base plate or can be reached only with great effort.

Aus der DE 199 00 557 A1 ist es bekannt, die hintere Saugmundkante durch eine dünnwandige, elastisch bewegliche Rippe zu bilden. Hierdurch wird der Widerstand beim Vorschub der Bodendüse verringert. Beim Zurückziehen der Bodendüse liegt die Spitze der Lippe genau in der Auflageebene der Bodendüse, welche durch ein an der Düse im hinteren Bereich angeordnetes Rad und durch die vordere Saugmundkante gebildet wird.From the DE 199 00 557 A1 It is known to form the rear suction mouth edge by a thin-walled, elastically movable rib. As a result, the resistance during the advance of the floor nozzle is reduced. When retracting the floor nozzle, the tip of the lip lies exactly in the support plane of the floor nozzle, which is formed by a wheel arranged on the nozzle in the rear area and by the front suction mouth edge.

Bei der Bodendüse gemäß DE 298 03 415 U1 werden sowohl die vordere als auch die hintere Saugmundkante durch einen schwenkbaren Pflugsteg gebildet. Die Endbereiche der Pflugstege sind zwar erhaben gegenüber sogenannten Gleitquerkanten ausgebildet, sie liegen aber sowohl beim Vorschub als auch beim Zurückziehen oberhalb der Auflageebene der Bodendüse, die hier durch vordere Stützröllchen und hintere Stützräder gebildet wird.In the floor nozzle according to DE 298 03 415 U1 Both the front and the rear suction mouth are formed by a pivotable plow. Although the end portions of the plow ridges are raised with respect to so-called Gleitquerkanten, but they are both during the feed and during retraction above the support plane of the floor nozzle, which is formed here by front Stützröllchen and rear support wheels.

Der Erfindung stellt sich somit das Problem, eine Bodendüse der eingangs genannten Art dahingehend zu verbessern, dass sie trotz einfachen Aufbaus auch auf hochflorigen Teppichen ein zufriedenstellendes Reinigungsergebnis und einen hohen Bedienkomfort gewährleistet.The invention thus raises the problem of improving a floor nozzle of the type mentioned in that it ensures a satisfactory cleaning result and a high level of user comfort despite its simple structure, even on deep-pile carpets.

Erfindungsgemäß wird dieses Problem durch eine Bodendüse mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved by a floor nozzle having the features of patent claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass einerseits der Bewegungswiderstand beim Vorschub der Bodendüse verringert und andererseits beim Zurückziehen der Bodendüse die mechanische Einwirkung auf einen Teppich vergrößert wird. Dies wird dadurch erreicht, dass die hintere Saugmundkante bei Anlage am vorderen Schwenkbegrenzungs-Anschlag und nicht aufliegender Bodendüse aus der Auflageebene der Bodendüse hervorsteht. Hierdurch wird ein tieferes Eindringen in den Teppich beim Zurückziehen erreicht. Beim Vorschub, bei dem die hintere Saugmundkante dann aus dieser aktiven Position wegschwenkt, sollte der vordere Schwenkbegrenzungs-Anschlag nicht die Vorwärtsbewegung hindern. Deshalb sollte er gegenüber der Auflageebene der Bodendüse zurückstehen.The achievable with the invention advantages are that on the one hand reduces the resistance to movement during the advance of the floor nozzle and on the other hand when retracting the floor nozzle, the mechanical action is increased to a carpet. This is achieved by the fact that the rear suction mouth edge protrudes from the bearing level of the floor nozzle when resting against the front pivot stop stop and not lying floor nozzle. This achieves a deeper penetration into the carpet when pulled back. At the feed, where the rear suction mouth then pivots away from this active position, the front swing limit stop should not prevent forward movement. Therefore, he should stand back against the support level of the floor nozzle.

In einer vorteilhaften Ausführungsform wirken auf die hintere Saugmundkante Rückstellkräfte in Richtung zur vorderen Saugmundkante. Hierdurch wird beim Vorschub eine dichte Anlage an die zu reinigende Fläche und damit eine hohe Saugkraft erreicht. In einfachster Weise wird die hintere Saugmundkante durch die Unterkante einer elastischen Lippe gebildet. Dabei ist es vorteilhaft, wenn die Lippe im Bereich der Schwenkachse eine größere Elastizität als im Auflagebereich auf der zu reinigenden Fläche besitzt. Hierdurch wird ein Wegbiegen der Lippe beim Zurückziehen der Düse verhindert und dadurch werden ausreichende Biegekräfte auf den Flor gebracht.In an advantageous embodiment, restoring forces act in the direction of the front suction mouth edge on the rear suction mouth edge. As a result, a dense contact with the surface to be cleaned and thus a high suction force is achieved during the feed. In the simplest way, the rear suction mouth edge is formed by the lower edge of an elastic lip. It is advantageous if the lip in the region of the pivot axis has a greater elasticity than in the support area on the surface to be cleaned. This will cause the lip to bend away prevents the retraction of the nozzle and thereby sufficient bending forces are brought to the pile.

Zur Unterstützung der Dichtwirkung beim Vorschub ist es vorteilhaft, wenn der hinteren Saugmundkante ein hinterer Schwenkbegrenzungs-Anschlag zugeordnet ist. Dies verhindert ein Zurückbiegen dieser Kante bis in einen Bereich, in dem sie nicht mehr aktiv den Saugmund abdichten würde. Dabei ist es zweckmäßig, wenn der hintere Schwenkbegrenzungs-Anschlag den Schwenkwinkel der hinteren Saugmundkante in Richtung des Anschlussstutzens derart begrenzt, dass er ausgehend von einer Position senkrecht zur Auflageebene der Bodendüse zwischen 45° und 90°, vorzugsweise ca. 70° beträgt.To support the sealing effect during the feed, it is advantageous if the rear suction mouth edge is associated with a rear pivot limiting stop. This prevents a bending back of this edge to an area in which they would no longer actively seal the suction mouth. It is expedient if the rear pivot stop limits the pivoting angle of the rear suction mouth edge in the direction of the connection piece such that it is from a position perpendicular to the support plane of the floor nozzle between 45 ° and 90 °, preferably about 70 °.

Zur Unterstützung der mechanischen Einwirkung auf den Teppich ist es vorteilhaft, wenn der hinteren Saugmundkante ein vorderer Schwenkbegrenzungs-Anschlag zugeordnet ist. Hierdurch wird beim Zurückziehen der Düse ein Durchbiegen in Richtung der vorderen Saugmundkante verhindert, was wiederum einen geringeren Kontakt mit dem Teppich zur Folge hätte. Zweckmäßig begrenzt der vordere Schwenkbegrenzungs-Anschlag den Schwenkwinkel der hinteren Saugmundkante in Richtung der vorderen Saugmundkante derart, dass sich die hintere Saugmundkante bei Anlage am vorderen Schwenkbegrenzungs-Anschlag in einer zur Auflageebene wenigstens annähernd senkrechten Position befindet.To support the mechanical action on the carpet, it is advantageous if the rear suction mouth edge is associated with a front pivot limiting stop. As a result, bending back in the direction of the front Saugmundkante is prevented when retracting the nozzle, which in turn would result in less contact with the carpet. Suitably, the front pivot limiting stop limits the pivoting angle of the rear suction mouth edge in the direction of the front suction mouth edge such that the rear suction mouth edge is in contact with the front pivot limiting stop in an at least approximately vertical position to the support plane.

Ein Ausführungsbeispiel der Erfindung ist in einer Zeichnung rein schematisch dargestellt und wird nachfolgend näher beschrieben. Die Figur zeigt einen Querschnitt durch eine erfindungsgemäß gestaltete Düse 1, die zum Beispiel in Verbindung mit einem Boden- oder Handstaubsauger für die Reinigung von textilen Bodenbelägen und glatten Böden geeignet ist. Sie umfasst ein Kunststoffgehäuse 2, welches in einen schwenkbar gelagerten Anschlussstutzen 3 übergeht. Unter dem Anschlussstutzen 3 sind zur erleichterten Führung und Bewegung der Düse 1 Rollen 4 angeordnet. In das Gehäuse 2 ist eine Gleitsohle 5 eingesetzt, die in der Regel aus Kunststoff oder einem Tiefzieh-Blechteil hergestellt wird. Zwischen dem Rand der Gleitsohle 5 und den Gehäuseseitenwänden 6 ist ein umlaufender, in der Höhe verstellbarer Borstenkranz 7 angeordnet. Die Verstelleinrichtung ist für die Erfindung nicht von Bedeutung und deshalb nicht weiter beschrieben. In der Gleitsohle 5 befindet sich eine quadratische Öffnung, der sogenannte Saugmund 8. Vom Saugmund 8 erstreckt sich ein Ansaugkanal 9 bis zum Anschlussstutzen 3.An embodiment of the invention is shown purely schematically in a drawing and will be described in more detail below. The figure shows a cross section through an inventively designed nozzle 1, which is suitable for example in conjunction with a floor or hand vacuum cleaner for cleaning textile floor coverings and smooth floors. It comprises a plastic housing 2, which merges into a pivotally mounted connection piece 3. Under the connecting piece 3 1 rollers 4 are arranged to facilitate guidance and movement of the nozzle. In the housing 2, a sliding sole 5 is used, which is usually made of plastic or a thermoformed sheet metal part. Between the edge of the sliding sole 5 and the housing side walls 6, a circumferential, height-adjustable bristle ring 7 is arranged. The adjustment is not relevant to the invention and therefore not further described. In the sliding sole 5 is a square opening, the so-called suction mouth 8. From the suction mouth 8, an intake passage 9 extends to the connecting piece. 3

Der Saugmund 8 wird durch eine vordere Saugmundkante 81 und eine hintere Saugmundkante 82 gebildet. Zur Reinigung einer zu bearbeitenden Fläche wird die Bodendüse 1 in Schubrichtung, in der Figur durch den Doppelfeil 10 symbolisiert, vorgeschoben und zurückgezogen. Dabei liegen die vordere Saugmundkante 81 und die tiefsten Punkte 41 der Rollen auf und bilden so eine Auflageebene, die durch die Linie 11 symbolisiert ist.The suction mouth 8 is formed by a front suction mouth edge 81 and a rear suction mouth edge 82. To clean a surface to be treated, the floor nozzle 1 in the thrust direction, symbolized in the figure by the double arrow 10, advanced and withdrawn. In this case, the front Saugmundkante 81 and the lowest points 41 of the rollers are on and thus form a support plane, which is symbolized by the line 11.

Die vordere Saugmundkante 81 ist aus der Gleitsohle 5 geformt, die hintere Saugmundkante 82 wird durch die Unterkante einer elastischen Lippe 83 gebildet, wobei letztere in einer dafür vorgesehenen Aufnahme 51 in der Gleitsohle 5 befestigt ist. Die Lippe 83 ist in einem ZweiKomponenten-Spritzgussverfahren gefertigt, der Abschnitt 84, welcher Kontakt zum Bodenbelag hat, besteht aus einem harten Material. Der Materialabschnitt 85 im Bereich der Aufnahme 51 besitzt eine größere Elastizität. Hierdurch ist die Lippe 83 bzw. die hintere Saugmundkante 82 um eine quer zur Schubrichtung verlaufende Achse schwenkbar ausgebildet, wie durch den gestrichelten Doppelpfeil 86 symbolisiert. Die Elastizität im Bereich der Schwenkachse bewirkt eine Rückstellkraft in Richtung der vorderen Saugmundkante 81. Anstelle des elastischen Abschnitts 85 kann ein federndes Scharnier zur Befestigung der Lippe 83 bzw. hinteren Saugmundkante 82 verwendet werden. Eine solche Ausführungsform ist in den Zeichnungen nicht dargestellt. Wenn die Düse 1 nicht auf dem Boden aufliegt, ragt die untere Kante 82 der Lippe um ein Maß D zwischen 0,5 mm und 4 mm über die Auflageebene hinaus, dies ist in einem vergrößerten Ausschnitt A dargestellt.The front suction mouth edge 81 is formed from the sliding sole 5, the rear suction mouth edge 82 is formed by the lower edge of an elastic lip 83, the latter being fixed in a receptacle 51 provided in the sliding sole 5. The lip 83 is made in a two-component injection molding process, the portion 84, which has contact with the floor covering, consists of a hard material. The material portion 85 in the region of the receptacle 51 has a greater elasticity. As a result, the lip 83 or the rear suction mouth edge 82 is designed to be pivotable about an axis extending transversely to the direction of thrust, as symbolized by the dashed double arrow 86. The elasticity in the region of the pivot axis causes a restoring force in the direction of the front suction mouth edge 81. Instead of the elastic portion 85, a resilient hinge for fastening the lip 83 or rear suction mouth edge 82 can be used. Such an embodiment is not shown in the drawings. If the nozzle 1 does not rest on the ground, the lower edge 82 of the lip protrudes by a dimension D between 0.5 mm and 4 mm beyond the support plane, this is shown in an enlarged section A.

Der Bauraum hinter der Lippe 83 ist so beschaffen, dass er für die hintere Saugmundkante 82 als hinterer Schwenkbegrenzungs-Anschlag 87 fungiert. Die Neigung der Gleitsohle 5 in diesem Bereich lässt einen Schwenkwinkel der Lippe 83 bzw. hinteren Saugmundkante 82 von ca. 45° bis 90°, vorzugsweise von ca. 70° zur Senkrechten (in Bezug auf die Auflageebene) zu. Vor der hinteren Saugmundkante 82 steht ein starrer Steg 88, der um das Maß d zwischen 0,5 mm und 4 mm gegenüber der Auflageebene zurückbleibt. Der Steg 88 bildet einen vorderen Schwenkbegrenzungs-Anschlag, so dass die zurückgefederte Lippe 83 etwa in der senkrechten Position (in Bezug auf die Auflageebene) verbleibt.The space behind the lip 83 is such that it functions as a rear pivot limiting stop 87 for the rear suction mouth edge 82. The inclination of the sliding sole 5 in this area allows a pivoting angle of the lip 83 and rear suction mouth edge 82 of approximately 45 ° to 90 °, preferably of approximately 70 ° to the vertical (with respect to the support plane). In front of the rear suction mouth edge 82 is a rigid web 88, which remains by the dimension d between 0.5 mm and 4 mm with respect to the support plane. The web 88 forms a front pivot limiting stop, so that the spring back lip 83 remains approximately in the vertical position (with respect to the support plane).

Beim Vorschub der Bodendüse 1 verursacht die hintere flexible Saugmundkante 82 nicht mehr eine Erhöhung der Schiebekraft wie bei einer konventionellen Bodendüse 1. Durch den Kontakt mit dem Teppichflor schwenkt die Lippe 83 nach hinten und wird in einem flachen angepassten Winkel über den Bodenbelag geschoben. Gleichzeitig ist so auch eine gute Abdichtung des Ansaugkanals 9 zur Reinigungsfläche unabhängig von der Florhöhe gewährleistet.When feeding the floor nozzle 1, the rear flexible suction mouth edge 82 no longer causes an increase in the pushing force as in a conventional floor nozzle 1. By the contact with the carpet pile, the lip 83 pivots backwards and is pushed over the floor covering at a flat adjusted angle. At the same time a good seal of the intake passage 9 is guaranteed to cleaning surface regardless of the pile height.

Beim Zurückziehen der Bodendüse 1 ist für eine gute Staubaufnahmeeffektivität die hintere Saugmundkante 82 relevant. Durch das zuvor beschriebene leichte Anheben des hinteren Bereiches der Bodendüse 1 würde die hintere Saugmundkante 82 bei herkömmlichen Bodendüsen 1 nicht mehr so wirkungsvoll durch den Teppichflor streichen. Da die hier beschriebene flexible Saugmundkante 82 insgesamt länger ausgestaltet ist und sich senkrecht zum Bodenbelag an den vorderen Begrenzungsanschlag (Steg 88) abstützt, ist der Kontakt zum Teppichflor ungleich aggressiver als bei herkömmlichen Bodendüsen. Dadurch wird eine Steigerung der Staubaufnahmeeffektivität erzielt. Durch den Bodenkontakt, der während der Benutzung der Düse 1 stattfindet, wird die Lippe 83 beim Zurückziehen der Düse 1 zwar geringfügig in Richtung der vorderen Saugmundkante 81 gebogen, trotzdem bleibt gewährleistet, dass die Lippe 83 tiefer in den Flor eindringt als die vordere Saugmundkante 81. Hierdurch ist gewährleistet, dass auch ein kurzer Flor aufgebogen wird.When retracting the floor nozzle 1, the rear suction mouth edge 82 is relevant for good dust absorption efficiency. As a result of the above-described slight lifting of the rear region of the floor nozzle 1, the rear suction mouth edge 82 in conventional floor nozzles 1 would no longer strike the carpet pile as effectively. Since the flexible suction mouth edge 82 described here is made longer overall and is supported perpendicular to the floor covering on the front limit stop (web 88), the contact with the carpet pile is unevenly more aggressive than with conventional floor nozzles. This achieves an increase in the dust-collecting efficiency. Due to the ground contact, which takes place during use of the nozzle 1, the lip 83 while retracting the nozzle 1, although slightly bent in the direction of the front suction mouth edge 81, but it remains ensured that the lip 83 penetrates deeper into the pile than the front suction mouth edge 81. This ensures that even a short pile is bent.

Claims (6)

  1. A floor cleaning nozzle (1) for a floor care appliance used for cleaning surfaces such as textile floor coverings and smooth floors, said nozzle having a gliding sole (5) which is arranged on the bottom side and inside which an opening is provided in the form of a suction mouth (8); a suction duct (9) extending from said opening to a connection piece (3); the suction mouth (8) being bounded by a front (81) and a rear (82) suction mouth edge in the pushing direction (10) of the floor nozzle (1); the rear suction mouth edge (82) being pivotable about an axis that extends transverse to the pushing direction; and the rear suction mouth edge (82) being associated with a rear pivot limit stop (87) and front pivot limit stop (88),
    characterized in that the rear suction mouth edge (82) projects beyond the plane of contact (11) of the floor nozzle (1) when it engages the front pivot limit stop (88) and the floor nozzle (1) is in a non-contacting position and that the front pivot limit stop (88) limits the pivoting angle of the rear suction mouth edge (82) in a direction toward the front suction mouth edge (81) in such a way that when the rear suction mouth edge (82) engages the front pivot limit stop (88), it is in an at least nearly vertical position with respect to the plane of contact (11).
  2. The floor nozzle (1) as recited in claim 1,
    characterized in that restoring forces act on the rear suction mouth edge (82) in a direction toward the front suction mouth edge (81).
  3. The floor nozzle (1) as recited in claim 2,
    characterized in that the rear suction mouth edge (82) is formed by the lower edge of a flexible lip (83).
  4. The floor nozzle (1) as recited in claim 3,
    characterized in that the flexibility of the lip (83) in the region of the pivot axis is greater than in the region of contact with the surface to be cleaned.
  5. The floor nozzle (1) as recited in one of claims 1 through 4,
    characterized in that the rear pivot limit stop (87) limits the pivoting angle of the rear suction mouth edge (82) in a direction toward the connection piece (3) in such a way that it is between 45° and 90°, and preferably about 70°, starting from [sic. with respect to] a position perpendicular to the plane of contact (11) of the floor nozzle (1).
  6. The floor nozzle (1) as recited in one of claims 1 through 5,
    characterized in
    the front pivot limit stop (88) is set back from the plane of contact (11) of the floor nozzle (1).
EP08749186A 2007-05-09 2008-04-28 Nozzle for a floor cleaning device Active EP2152135B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08749186T PL2152135T3 (en) 2007-05-09 2008-04-28 Nozzle for a floor cleaning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007022256A DE102007022256B4 (en) 2007-05-09 2007-05-09 Nozzle for a floor care appliance
PCT/EP2008/003413 WO2008138477A2 (en) 2007-05-09 2008-04-28 Nozzle for a floor cleaning device

Publications (2)

Publication Number Publication Date
EP2152135A2 EP2152135A2 (en) 2010-02-17
EP2152135B1 true EP2152135B1 (en) 2011-12-14

Family

ID=39811463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08749186A Active EP2152135B1 (en) 2007-05-09 2008-04-28 Nozzle for a floor cleaning device

Country Status (7)

Country Link
US (1) US20100236019A1 (en)
EP (1) EP2152135B1 (en)
AT (1) ATE536793T1 (en)
DE (1) DE102007022256B4 (en)
DK (1) DK2152135T3 (en)
PL (1) PL2152135T3 (en)
WO (1) WO2008138477A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3025626A1 (en) 2014-11-27 2016-06-01 Miele & Cie. KG Floor nozzle for floor treating machine and method for producing a floor nozzle for floor treating machine
DE102016117864A1 (en) 2016-09-22 2018-03-22 Miele & Cie. Kg Floor nozzle for vacuum cleaners and vacuum cleaners
US10299644B2 (en) 2015-09-21 2019-05-28 Dyson Technology Limited Cleaner head
US11844485B2 (en) 2018-02-28 2023-12-19 Dyson Technology Limited Cleaner head

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FR2965164B1 (en) * 2010-09-24 2012-10-12 Seb Sa VACUUM CLEANER BALANCING SKATE
US20140157543A1 (en) 2012-12-12 2014-06-12 Electrolux Home Care Products, Inc. Vacuum cleaner base assembly
US9345371B2 (en) 2012-12-12 2016-05-24 Electrolux Home Care Products, Inc. Vacuum cleaner base assembly
EP3150096B1 (en) * 2014-10-20 2018-09-26 Koninklijke Philips N.V. Floor cleaning device
EP3264961A1 (en) * 2015-03-06 2018-01-10 Alfred Kärcher GmbH & Co. KG Floor nozzle
CN106889944A (en) * 2015-12-18 2017-06-27 康塔有限公司 Vacuum cleaner head
DE102017118542B3 (en) * 2017-08-15 2018-11-08 Miele & Cie. Kg Vacuum robot for autonomous cleaning of floor surfaces
FR3078877B1 (en) * 2018-03-14 2020-02-21 Seb S.A. VACUUM CLEANER WITH REAR SCRATCHING RIB
CN108720723A (en) * 2018-05-22 2018-11-02 科沃斯机器人股份有限公司 A kind of cleaning assemblies, cleaner and clean method

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DE2139157A1 (en) * 1971-08-05 1973-02-15 Andrae P Kg Sucker mouthpiece
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DE8812278U1 (en) * 1988-09-28 1990-01-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
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DE19900557C2 (en) * 1999-01-09 2002-06-06 Wessel Werk Gmbh Suction head for vacuum cleaner
US6279198B1 (en) * 1999-02-18 2001-08-28 Emerson Electric Co. Convertible wet/dry cleaning system
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DE102004005641A1 (en) * 2004-02-04 2005-09-01 Miele & Cie. Kg Nozzle for a floor care appliance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3025626A1 (en) 2014-11-27 2016-06-01 Miele & Cie. KG Floor nozzle for floor treating machine and method for producing a floor nozzle for floor treating machine
DE102014117418A1 (en) 2014-11-27 2016-06-02 Miele & Cie. Kg Floor nozzle for a floor care appliance and method for making a floor nozzle for a floor care appliance
US10299644B2 (en) 2015-09-21 2019-05-28 Dyson Technology Limited Cleaner head
DE102016117864A1 (en) 2016-09-22 2018-03-22 Miele & Cie. Kg Floor nozzle for vacuum cleaners and vacuum cleaners
EP3298944A2 (en) 2016-09-22 2018-03-28 Miele & Cie. KG Floor nozzle for vacuum cleaner and vacuum cleaner
US11844485B2 (en) 2018-02-28 2023-12-19 Dyson Technology Limited Cleaner head

Also Published As

Publication number Publication date
PL2152135T3 (en) 2012-04-30
DE102007022256A1 (en) 2008-11-13
US20100236019A1 (en) 2010-09-23
DK2152135T3 (en) 2012-02-27
EP2152135A2 (en) 2010-02-17
WO2008138477A3 (en) 2009-01-15
ATE536793T1 (en) 2011-12-15
WO2008138477A2 (en) 2008-11-20
DE102007022256B4 (en) 2013-07-25

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