EP3042597A1 - Floor nozzle for a vacuum cleaner - Google Patents

Floor nozzle for a vacuum cleaner Download PDF

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Publication number
EP3042597A1
EP3042597A1 EP15200871.0A EP15200871A EP3042597A1 EP 3042597 A1 EP3042597 A1 EP 3042597A1 EP 15200871 A EP15200871 A EP 15200871A EP 3042597 A1 EP3042597 A1 EP 3042597A1
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EP
European Patent Office
Prior art keywords
floor nozzle
suction
pivot axis
floor
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15200871.0A
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German (de)
French (fr)
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EP3042597B1 (en
Inventor
Martin Zydek
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Wessel Werk GmbH
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Wessel Werk GmbH
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Publication date
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Publication of EP3042597A1 publication Critical patent/EP3042597A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/06—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
    • 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

Definitions

  • the invention relates to a floor nozzle for vacuum cleaners with a nozzle body having a bottom-side support surface with a suction mouth and a suction channel for discharging a suction flowing into the suction air suction, with a carrier having a connection element for a suction tube and pivotable about a pivot axis with the carrier is connected, and with a fluid connection between the connection element and the suction channel.
  • a floor nozzle with the described structure is made, for example DE 10 2009 029 806 A1 known.
  • the carrier has two housing parts connected to a hinge axis, wherein the nozzle body is pivotally mounted on the front housing part and the connection element for a suction pipe is arranged on the rear housing part.
  • the carrier is supported on the bottom side of wheels whose common impeller axis at the same time forms the hinge axis for the two housing parts.
  • the nozzle body can optimally align with the ground surface, at least during a forward movement of the nozzle, independently of the orientation of the suction pipe and the nature of the floor surface.
  • the described embodiment of the floor nozzle with two joint axes for tilting movements and the design-related additional components increase the assembly-technical effort in the production.
  • the nozzle body When vacuuming textile floor surfaces, especially when vacuuming high-pile carpets, the nozzle body also tends to unwanted tilting movements, so that effective cleaning during a backward movement of the floor nozzle is not always guaranteed.
  • the invention has for its object to provide a floor nozzle whose nozzle body aligns optimally with the ground surface both in a forward movement and in a backward movement.
  • the floor nozzle should be structurally simpler than a floor nozzle with two joint axes for tilting movements.
  • the object of the invention and solution of this problem is a floor nozzle for vacuum cleaners according to claim 1.
  • the floor nozzle according to the invention has only one pivot axis, which is movable between two working positions spaced apart in the horizontal direction.
  • the construction according to the invention makes use of the fact that alternately compressive forces and tensile forces act on the connecting element of the carrier when the floor nozzle is moved over a bottom surface by means of a suction pipe connected to the connecting element with forward movements and backward movements.
  • the pivot axis In a first working position, which is established during a forward movement of the floor nozzle due to a pressure force acting on the connection element, the pivot axis has a smaller distance to the suction mouth than in a second working position, which is established as a result of a tensile force acting on the connection element.
  • the working positions are determined so that the pivot axis in the first working position has a smaller vertical distance to the bottom-side bearing surface of the nozzle body than in the second working position.
  • the pivot axis, which pivotally movable the nozzle body with the support provided for the bottom support connects located above a central zone of the support surface, when the floor nozzle is moved with a forward movement over a bottom surface, while the same pivot axis is displaced in a rearward movement of the floor nozzle far to the rear.
  • the embodiment of the invention achieves the advantages of a trained according to the prior art with two joint axes floor nozzle with a much lower design effort.
  • the position of the pivot axis can be optimized for both the forward movement of the floor nozzle and for the backward movement of the floor nozzle so that the nozzle body is prone to tilting neither in a forward movement nor in a backward movement.
  • the suction properties of the floor nozzle on problematic floors, especially high-pile carpets, can be improved.
  • the pivot axis is guided displaceably along a longitudinal guide between two stops.
  • the longitudinal guide may have a guide surface configured as a bevel and / or an arcuately curved guide surface in the manner of a slotted guide. Due to the length of the longitudinal guide and the pitch angle and / or the curvature of the longitudinal guide, the distances between the working positions and the respective bottom-side distance of the working positions can be determined and optimized with respect to the function of the floor nozzle.
  • the pivot axis is in the first working position near the ground above a central zone of the support surface and a ground-remote position of the pivot axis is set in a near-edge region of the receiving surface for the second working position.
  • the carrier expediently has at least one roller for supporting on the ground during a forward movement of the floor nozzle.
  • the two Working positions of the pivot axis can be set so that the carrier is supported on at least one roller on the bottom surface when the floor nozzle is moved by means of a suction pipe connected to the connecting element in the forward direction over a hard floor surface, and that the roller connected to the carrier has no ground contact when the floor nozzle is moved by the suction pipe in the reverse direction over the hard floor surface.
  • connection element has to compensate for relative movements between the suction channel of the nozzle body and the connecting element for the suction pipe provided on the carrier both in the horizontal and in the vertical direction.
  • the fluid connection must be flexible.
  • Corrugated hoses, bellows constructions and channel-shaped connecting elements with similar functions are suitable as fluid connections.
  • the invention teaches that the carrier is fork-shaped and that the nozzle body is mounted pivotably and displaceably on fork arms of the carrier.
  • the connecting element for the suction tube may in particular be an angular tube which is connected to the carrier so as to be rotatable about a horizontal axis of rotation.
  • Bristle strips and / or sealing lips can be arranged on the nozzle body.
  • corresponding elements can also be arranged on a seal carrier, which is arranged adjustably within the nozzle body and can be adjusted between two or more functional positions.
  • additional functional elements of the nozzle body can also be optimized for sucking smooth or tiled hard floor surfaces and for sucking textile surfaces and carpets.
  • the figures show a so-called static floor nozzle for vacuum cleaners, which have no rotating cleaning tools.
  • the floor nozzle comprises a nozzle body 1, which has a bottom-side bearing surface 2 with a suction mouth 3 and a suction channel 4 for discharging a suction air stream flowing into the suction mouth.
  • the nozzle body 1 is further provided with a cover, which is not essential for the function of the nozzle body and therefore not shown in the figures.
  • the floor nozzle further comprises a support 5, which has a connection element 6 for a suction pipe 7 and is pivotably connected to the nozzle body 1 about a pivot axis 8.
  • a fluid connection is provided which compensates for relative movements between the suction pipe connection element 6 and the suction channel 4 and is designed, for example, as a corrugated hose.
  • the pivot axis 8 is movable between two horizontally spaced working positions I, II.
  • the working positions I, II which adjust depending on the direction of movement, with which the floor nozzle is moved over a floor surface to be cleaned.
  • the support 5 of the floor nozzle is fork-shaped and has fork arms 10, on which the nozzle body 1 is mounted pivotably and displaceably.
  • the pivot axis 8 is guided displaceably along a longitudinal guide 11 between two stops.
  • the longitudinal guide 11 consists of a slot in which a pin engages.
  • the illustration shows that the longitudinal guide 11 has a guide surface formed as a bevel. Instead, the Longitudinal guide also have an arcuately curved guide surface.
  • FIG. 3A and 3B shows that the pivot axis 8 is in the first working position I with a vertical distance y 1 close to the ground above a central zone of the support surface 2 and that the pivot axis 8 in the second working position II in a vertical distance y 2 bodenfern above a near-edge region of the Support surface 2 is positioned. If the floor nozzle is guided with a forward movement over a floor surface to be cleaned, the pivot axis 8, which connects the nozzle body 1 in a pivotable manner to the support 5, is located as shown in FIG Fig. 3A , above a central zone of the support surface 2, and preferably approximately centrally above the support surface.
  • the pivot axis 8 assumes the second working position II, which in Fig. 3B is shown.
  • the pivot axis 8 is displaced far to the rear and is located in the region of the rear edge of the support surface 2 in an elevated position.
  • the carrier 5 has in the embodiment of two arranged on an axis rollers 12 for bottom support, which are effective in a forward movement of the floor nozzle on a floor surface to be cleaned.
  • the two working positions I, II of the pivot axis 8 are set so that the rollers 12 rest on the floor surface to be cleaned when the floor nozzle is moved by means of a suction pipe 7 connected to the connecting element 6 in the forward direction over a hard floor surface 13.
  • the roller has no contact with the ground when the floor nozzle is moved by means of the suction tube 7 in the reverse direction over the hard floor surface 13 (see. Fig. 3A and Fig. 3B ). If the floor nozzle is used on a deep pile carpet, the rollers will dip at one Movement of the floor nozzle in the backward direction not as deep into the carpet as in a forward movement.
  • the fluid connection 9 between the suction pipe connection element 6 arranged on the carrier 5 and the suction channel 4 of the nozzle body 1 must compensate for relative movements between the connection element 6 and the suction channel 4 in the horizontal and vertical directions.
  • the fluid connection 9 is preferably designed as a flexible hose part. It may be in the form of a bellows, a corrugated tube or the like.
  • the suction pipe connecting element 6 has an angular tube 14 which is connected to the carrier so as to be rotatable about a horizontal axis of rotation a.
  • the nozzle body may have on its underside sealing lips and / or bristle strips for marginal sealing relative to the bottom surface. It is also within the scope of the invention that the sealing elements are fastened to a seal carrier, which is arranged vertically adjustable or pivotally mounted within the nozzle body and can be adjusted between one or more working positions.

Abstract

Die Erfindung betrifft eine Bodendüse für Staubsauger mit einem Düsenkörper (1), der eine bodenseitige Auflagefläche (2) mit einem Saugmund (3) sowie einen Saugkanal (4) zum Ableiten eines in den Saugmund einströmenden Saugluftstromes aufweist, und mit einem Träger (5). Der Träger (5) weist ein Anschlusselement (6) für ein Saugrohr (7) auf und ist um eine Schwenkachse (8) schwenkbeweglich mit dem Düsenkörper (1) verbunden. Zwischen dem Anschlusselement (6) und dem Saugkanal (4) ist ferner eine Fluidverbindung (9) vorgesehen. Auf das Anschlusselement (6) wirken wechselweise Druckkräfte und Zugkräfte, wenn die Bodendüse mittels eines an das Anschlusselement (6) angeschlossenen Saugrohres (7) mit Vorwärtsbewegungen und Rückwärtsbewegungen über eine Bodenfläche bewegt wird. Erfindungsgemäß ist die Schwenkachse (8) zwischen zwei in horizontaler Richtung beabstandeten Arbeitspositionen (I, II) bewegbar, wobei die Schwenkachse (8) in einer ersten Arbeitsposition (I), die sich infolge einer auf das Anschlusselement (4) wirkenden Druckkraft einstellt, einen geringeren Abstand zum Saugmund (3) aufweist als in einer zweiten Arbeitsposition (II), die sich infolge einer auf das Anschlusselement (6) wirkenden Zugkraft einstellt.The invention relates to a floor nozzle for vacuum cleaners having a nozzle body (1) which has a bottom-side bearing surface (2) with a suction mouth (3) and a suction channel (4) for discharging a suction air stream flowing into the suction mouth, and a support (5). , The carrier (5) has a connection element (6) for a suction tube (7) and is pivotably connected to the nozzle body (1) about a pivot axis (8). Between the connection element (6) and the suction channel (4), a fluid connection (9) is further provided. On the connecting element (6) act alternately compressive forces and tensile forces when the floor nozzle is moved by means of a connection to the element (6) connected to the suction pipe (7) with forward movements and backward movements over a bottom surface. According to the invention, the pivot axis (8) is movable between two working positions (I, II) spaced apart in the horizontal direction, wherein the pivot axis (8) in a first working position (I), which adjusts as a result of a pressing force acting on the connecting element (4) smaller distance from the suction mouth (3) than in a second working position (II), which adjusts itself as a result of acting on the connecting element (6) tensile force.

Description

Die Erfindung betrifft eine Bodendüse für Staubsauger mit einem Düsenkörper, der eine bodenseitige Auflagefläche mit einem Saugmund sowie einen Saugkanal zum Ableiten eines in den Saugmund einströmenden Saugluftstromes aufweist, mit einem Träger, der ein Anschlusselement für ein Saugrohr aufweist und um eine Schwenkachse schwenkbeweglich mit dem Träger verbunden ist, und mit einer Fluidverbindung zwischen dem Anschlusselement und dem Saugkanal.The invention relates to a floor nozzle for vacuum cleaners with a nozzle body having a bottom-side support surface with a suction mouth and a suction channel for discharging a suction flowing into the suction air suction, with a carrier having a connection element for a suction tube and pivotable about a pivot axis with the carrier is connected, and with a fluid connection between the connection element and the suction channel.

Eine Bodendüse mit dem beschriebenen Aufbau ist beispielsweise aus DE 10 2009 029 806 A1 bekannt. Der Träger weist zwei um eine Gelenkachse verbundene Gehäuseteile auf, wobei an dem vorderen Gehäuseteil der Düsenkörper schwenkbeweglich gelagert ist und an dem rückseitigen Gehäuseteil das Anschlusselement für ein Saugrohr angeordnet ist. Der Träger ist an Laufrädern bodenseitig abgestützt, deren gemeinsame Laufradachse zugleich die Gelenkachse für die beiden Gehäuseteile bildet. Beim Gebrauch der Düse werden die durch das Saugrohr eingeleiteten Kräfte über die Gelenkachse und die Laufräder aufgefangen, wodurch der Düsenkörper von diesen Kräften entkoppelt wird. Ferner kann der Düsenkörper sich infolge seiner schwenkbeweglichen Lagerung an dem Träger unabhängig von der Ausrichtung des Saugrohres und der Beschaffenheit der Bodenfläche zumindest bei einer Vorwärtsbewegung der Düse optimal zur Bodenoberfläche ausrichten. Die beschriebene Ausgestaltung der Bodendüse mit zwei Gelenkachsen für Kippbewegungen und die konstruktionsbedingten zusätzlichen Bauteile erhöhen jedoch den montagetechnischen Aufwand bei der Fertigung. Beim Saugen textiler Bodenflächen, insbesondere beim Saugen von hochflorigen Teppichbelägen, neigt der Düsenkörper außerdem zu ungewollten Kippbewegungen, so dass eine effektive Reinigung bei einer Rückwärtsbewegung der Bodendüse nicht immer gewährleistet ist.A floor nozzle with the described structure is made, for example DE 10 2009 029 806 A1 known. The carrier has two housing parts connected to a hinge axis, wherein the nozzle body is pivotally mounted on the front housing part and the connection element for a suction pipe is arranged on the rear housing part. The carrier is supported on the bottom side of wheels whose common impeller axis at the same time forms the hinge axis for the two housing parts. When using the nozzle, the forces introduced by the suction pipe are absorbed by the joint axis and the wheels, whereby the nozzle body is decoupled from these forces. Furthermore, due to its pivotal mounting on the support, the nozzle body can optimally align with the ground surface, at least during a forward movement of the nozzle, independently of the orientation of the suction pipe and the nature of the floor surface. However, the described embodiment of the floor nozzle with two joint axes for tilting movements and the design-related additional components increase the assembly-technical effort in the production. When vacuuming textile floor surfaces, especially when vacuuming high-pile carpets, the nozzle body also tends to unwanted tilting movements, so that effective cleaning during a backward movement of the floor nozzle is not always guaranteed.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Bodendüse anzugeben, deren Düsenkörper sich sowohl bei einer Vorwärtsbewegung als auch bei einer Rückwärtsbewegung optimal zur Bodenfläche ausrichtet. Die Bodendüse soll konstruktiv einfacher ausgebildet sein als eine Bodendüse mit zwei Gelenkachsen für Kippbewegungen.Against this background, the invention has for its object to provide a floor nozzle whose nozzle body aligns optimally with the ground surface both in a forward movement and in a backward movement. The floor nozzle should be structurally simpler than a floor nozzle with two joint axes for tilting movements.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Bodendüse für Staubsauger nach Anspruch 1.The object of the invention and solution of this problem is a floor nozzle for vacuum cleaners according to claim 1.

Die erfindungsgemäße Bodendüse weist nur eine Schwenkachse auf, die zwischen zwei in horizontaler Richtung beabstandeten Arbeitspositionen bewegbar ist. Die erfindungsgemäße Konstruktion nutzt aus, dass auf das Anschlusselement des Trägers wechselweise Druckkräfte und Zugkräfte wirken, wenn die Bodendüse mittels eines an das Anschlusselement angeschlossenen Saugrohres mit Vorwärtsbewegungen und Rückwärtsbewegungen über eine Bodenfläche bewegt wird. In einer ersten Arbeitsposition, die sich bei einer Vorwärtsbewegung der Bodendüse infolge einer auf das Anschlusselement wirkenden Druckkraft einstellt, weist die Schwenkachse einen geringeren Abstand zum Saugmund auf als in einer zweiten Arbeitsposition, die sich infolge einer auf das Anschlusselement wirkenden Zugkraft einstellt. Vorzugsweise sind die Arbeitspositionen so festgelegt, dass die Schwenkachse in der ersten Arbeitsposition einen geringeren Vertikalabstand zur bodenseitigen Auflagefläche des Düsenkörpers aufweist als in der zweiten Arbeitsposition. Durch die erfindungsgemäße Ausgestaltung der Bodendüse erreicht man, dass sich die Schwenkachse, welche den Düsenkörper mit dem zur bodenseitigen Abstützung vorgesehenen Träger schwenkbeweglich verbindet, oberhalb einer mittleren Zone der Auflagefläche befindet, wenn die Bodendüse mit einer Vorwärtsbewegung über eine Bodenfläche bewegt wird, während dieselbe Schwenkachse bei einer Rückwärtsbewegung der Bodendüse weit nach hinten verlagert ist. Die erfindungsgemäße Ausgestaltung erreicht die Vorteile einer nach dem Stand der Technik mit zwei Gelenkachsen ausgebildeten Bodendüse mit einem wesentlich geringeren konstruktiven Aufwand. Durch die erfindungsgemäße Ausgestaltung kann die Position der Schwenkachse sowohl für die Vorwärtsbewegung der Bodendüse als auch für die Rückwärtsbewegung der Bodendüse so optimiert werden, dass der Düsenkörper weder bei einer Vorwärtsbewegung noch bei einer Rückwärtsbewegung zum Verkippen neigt. Die Saugeigenschaften der Bodendüse auf problematischen Böden, insbesondere hochflorigen Teppichbelägen, kann dadurch verbessert werden.The floor nozzle according to the invention has only one pivot axis, which is movable between two working positions spaced apart in the horizontal direction. The construction according to the invention makes use of the fact that alternately compressive forces and tensile forces act on the connecting element of the carrier when the floor nozzle is moved over a bottom surface by means of a suction pipe connected to the connecting element with forward movements and backward movements. In a first working position, which is established during a forward movement of the floor nozzle due to a pressure force acting on the connection element, the pivot axis has a smaller distance to the suction mouth than in a second working position, which is established as a result of a tensile force acting on the connection element. Preferably, the working positions are determined so that the pivot axis in the first working position has a smaller vertical distance to the bottom-side bearing surface of the nozzle body than in the second working position. Due to the inventive design of the floor nozzle can be achieved that the pivot axis, which pivotally movable the nozzle body with the support provided for the bottom support connects, located above a central zone of the support surface, when the floor nozzle is moved with a forward movement over a bottom surface, while the same pivot axis is displaced in a rearward movement of the floor nozzle far to the rear. The embodiment of the invention achieves the advantages of a trained according to the prior art with two joint axes floor nozzle with a much lower design effort. Due to the inventive design, the position of the pivot axis can be optimized for both the forward movement of the floor nozzle and for the backward movement of the floor nozzle so that the nozzle body is prone to tilting neither in a forward movement nor in a backward movement. The suction properties of the floor nozzle on problematic floors, especially high-pile carpets, can be improved.

Eine vorteilhafte konstruktive Ausgestaltung der Erfindung sieht vor, dass die Schwenkachse entlang einer Längsführung zwischen zwei Anschlägen verschiebbar geführt ist. Die Längsführung kann nach Art einer Kulissenführung eine als Schräge ausgebildete Führungsfläche und/oder eine bogenförmig gekrümmte Führungsfläche aufweisen. Durch die Länge der Längsführung und den Steigungswinkel und/oder die Krümmung der Längsführung können die Abstände zwischen den Arbeitspositionen sowie der jeweilige bodenseitige Abstand der Arbeitspositionen festgelegt und hinsichtlich der Funktion der Bodendüse optimiert werden. Vorzugsweise befindet sich die Schwenkachse in der ersten Arbeitsposition bodennah oberhalb einer mittleren Zone der Auflagefläche und wird für die zweite Arbeitsposition eine bodenferne Position der Schwenkachse in einem randnahen Bereich der Aufnahmefläche festgelegt.An advantageous structural embodiment of the invention provides that the pivot axis is guided displaceably along a longitudinal guide between two stops. The longitudinal guide may have a guide surface configured as a bevel and / or an arcuately curved guide surface in the manner of a slotted guide. Due to the length of the longitudinal guide and the pitch angle and / or the curvature of the longitudinal guide, the distances between the working positions and the respective bottom-side distance of the working positions can be determined and optimized with respect to the function of the floor nozzle. Preferably, the pivot axis is in the first working position near the ground above a central zone of the support surface and a ground-remote position of the pivot axis is set in a near-edge region of the receiving surface for the second working position.

Der Träger weist zweckmäßig zumindest eine Laufrolle zur bodenseitigen Abstützung bei einer Vorwärtsbewegung der Bodendüse auf. Die beiden Arbeitspositionen der Schwenkachse können so festgelegt werden, dass der Träger über zumindest eine Laufrolle auf der Bodenfläche abgestützt ist, wenn die Bodendüse mittels eines an das Anschlusselement angeschlossenen Saugrohres in Vorwärtsrichtung über eine Hartbodenfläche bewegt wird, und dass die an dem Träger angeschlossene Laufrolle keinen Bodenkontakt hat, wenn die Bodendüse mittels des Saugrohres in Rückwärtsrichtung über die Hartbodenfläche bewegt wird.The carrier expediently has at least one roller for supporting on the ground during a forward movement of the floor nozzle. The two Working positions of the pivot axis can be set so that the carrier is supported on at least one roller on the bottom surface when the floor nozzle is moved by means of a suction pipe connected to the connecting element in the forward direction over a hard floor surface, and that the roller connected to the carrier has no ground contact when the floor nozzle is moved by the suction pipe in the reverse direction over the hard floor surface.

Die Fluidverbindung zwischen dem Anschlusselement und dem Saugkanal muss Relativbewegungen zwischen dem Saugkanal des Düsenkörpers und dem am Träger vorgesehenen Anschlusselement für das Saugrohr sowohl in horizontaler als auch in vertikaler Richtung ausgleichen. Insofern muss die Fluidverbindung flexibel ausgestaltet sein. Als Fluidverbindung eignen sich Wellschläuche, Faltenbalgkonstruktionen und kanalförmige Verbindungselemente mit ähnlicher Funktion.The fluid connection between the connection element and the suction channel has to compensate for relative movements between the suction channel of the nozzle body and the connecting element for the suction pipe provided on the carrier both in the horizontal and in the vertical direction. In this respect, the fluid connection must be flexible. Corrugated hoses, bellows constructions and channel-shaped connecting elements with similar functions are suitable as fluid connections.

In einer weiteren Ausgestaltung lehrt die Erfindung, dass der Träger gabelförmig ausgebildet ist und dass der Düsenkörper an Gabelarmen des Trägers schwenkbeweglich und verschiebbar gelagert ist. Das Anschlusselement für das Saugrohr kann insbesondere ein Winkelrohr sein, welches um eine horizontale Drehachse drehbeweglich an dem Träger angeschlossen ist.In a further embodiment, the invention teaches that the carrier is fork-shaped and that the nozzle body is mounted pivotably and displaceably on fork arms of the carrier. The connecting element for the suction tube may in particular be an angular tube which is connected to the carrier so as to be rotatable about a horizontal axis of rotation.

An dem Düsenkörper können Borstenstreifen und/oder Dichtungslippen angeordnet sein. In an sich bekannter Weise können entsprechende Elemente auch an einem Dichtungsträger angeordnet sein, der innerhalb des Düsenkörpers verstellbar angeordnet ist und zwischen zwei oder mehreren Funktionsstellungen verstellt werden kann. Durch zusätzliche Funktionselemente kann der Düsenkörper ferner zum Saugen glatter oder gefliester Hartbodenflächen sowie zum Saugen von textilen Flächen und Teppichbelägen optimiert werden.Bristle strips and / or sealing lips can be arranged on the nozzle body. In a manner known per se, corresponding elements can also be arranged on a seal carrier, which is arranged adjustably within the nozzle body and can be adjusted between two or more functional positions. By additional functional elements of the nozzle body can also be optimized for sucking smooth or tiled hard floor surfaces and for sucking textile surfaces and carpets.

Im Folgenden wir die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen schematisch:

Fig. 1
eine perspektivische Ansicht auf eine Bodendüse für Staubsauger,
Fig. 2
einen Ausschnitt aus der in Fig. 1 dargestellten Bodendüse in einer anderen Funktionsstellung,
Fig. 3A
einen Längsschnitt durch die Bodendüse in einer ersten Funktionsstellung,
Fig. 3B
einen Längsschnitt durch die Bodendüse in einer zweiten Funktionsstellung.
In the following, we will explain the invention with reference to a purely exemplary embodiment illustrative drawing. They show schematically:
Fig. 1
a perspective view of a floor nozzle for vacuum cleaners,
Fig. 2
a section of the in Fig. 1 illustrated floor nozzle in a different functional position,
Fig. 3A
a longitudinal section through the floor nozzle in a first functional position,
Fig. 3B
a longitudinal section through the floor nozzle in a second functional position.

Die Figuren zeigen eine sogenannte statische Bodendüse für Staubsauger, die keine rotierenden Reinigungswerkzeuge aufweisen. Die Bodendüse umfasst einen Düsenkörper 1, der eine bodenseitige Auflagefläche 2 mit einem Saugmund 3 sowie einen Saugkanal 4 zum Ableiten eines in den Saugmund einströmenden Saugluftstromes aufweist. Üblicherweise ist der Düsenkörper 1 ferner mit einer Abdeckung versehen, die für die Funktion des Düsenkörpers allerdings nicht wesentlich ist und daher in den Figuren nicht dargestellt wurde. Die Bodendüse umfasst ferner einen Träger 5, der ein Anschlusselement 6 für ein Saugrohr 7 aufweist und um eine Schwenkachse 8 schwenkbeweglich mit dem Düsenkörper 1 verbunden ist. Zwischen dem Saugrohr-Anschlusselement 6 und dem Saugkanal 4 ist eine Fluidverbindung vorgesehen, die Relativbewegungen zwischen dem Saugrohr-Anschlusselement 6 und dem Saugkanal 4 ausgleicht und beispielsweise als Wellschlauch ausgebildet ist.The figures show a so-called static floor nozzle for vacuum cleaners, which have no rotating cleaning tools. The floor nozzle comprises a nozzle body 1, which has a bottom-side bearing surface 2 with a suction mouth 3 and a suction channel 4 for discharging a suction air stream flowing into the suction mouth. Usually, the nozzle body 1 is further provided with a cover, which is not essential for the function of the nozzle body and therefore not shown in the figures. The floor nozzle further comprises a support 5, which has a connection element 6 for a suction pipe 7 and is pivotably connected to the nozzle body 1 about a pivot axis 8. Between the suction pipe connection element 6 and the suction channel 4, a fluid connection is provided which compensates for relative movements between the suction pipe connection element 6 and the suction channel 4 and is designed, for example, as a corrugated hose.

Auf das Anschlusselement 6 des Trägers 5 wirken wechselweise Druckkräfte und Zugkräfte, wenn die Bodendüse mittels eines an das Anschlusselement 6 angeschlossenen Saugrohres 7 mit Vorwärtsbewegungen und Rückwärtsbewegungen über eine Bodenfläche bewegt wird. Die Schwenkachse 8 ist zwischen zwei in horizontaler Richtung beabstandeten Arbeitspositionen I, II bewegbar. Die Arbeitspositionen I, II, die sich einstellen, sind abhängig von der Bewegungsrichtung, mit der die Bodendüse über eine zu reinigende Bodenfläche bewegt wird. Wenn die Bodendüse mit einer Vorwärtsbewegung über die zu reinigenden Bodenfläche bewegt wird und dabei über das Saugrohr 7 eine Druckkraft FD auf den Träger 5 wirkt, nimmt die Schwenkachse eine erste Arbeitsposition I ein. Wenn die Bodendüse mit einer Rückwärtsbewegung über die Bodenfläche bewegt wird und mittels des Saugrohres 7 eine Zugkraft Fz auf das Saugrohr-Anschlusselement 6 und den Träger 5 ausgeübt wird, bewegt sich die Schwenkachse 8 in eine zweite Arbeitsposition II. Aus einer vergleichenden Betrachtung der Fig. 3A und 3B geht hervor, dass die Schwenkachse 8 in der ersten Arbeitsposition I einen geringeren Abstand x1 zum Saugmund 3 aufweist als in der zweiten Arbeitsposition II und dass die Schwenkachse 8 in der ersten Arbeitsposition I einen geringeren vertikalen Abstand y1 zur bodenseitigen Auflagefläche 2 des Düsenkörpers 1 aufweist als in der zweiten Arbeitsposition II, wo sich der vertikale Abstand y2 und der horizontale Abstand x2 zum Saugmund einstellt.On the connecting element 6 of the support 5 alternately compressive forces and tensile forces act when the floor nozzle is moved by means of a suction pipe 7 connected to the connecting element 6 with forward movements and backward movements over a bottom surface. The pivot axis 8 is movable between two horizontally spaced working positions I, II. The working positions I, II, which adjust depending on the direction of movement, with which the floor nozzle is moved over a floor surface to be cleaned. When the floor nozzle is moved with a forward movement over the floor surface to be cleaned and a pressure force F D acts on the support 5 via the suction pipe 7, the pivot axis assumes a first working position I. When the floor nozzle is moved with a backward movement over the bottom surface and by means of the suction pipe 7 a tensile force Fz is exerted on the suction pipe connection element 6 and the carrier 5, the pivot axis 8 moves to a second working position II. From a comparative consideration of Fig. 3A and 3B shows that the pivot axis 8 in the first working position I has a smaller distance x 1 to the suction mouth 3 than in the second working position II and that the pivot axis 8 in the first working position I a smaller vertical distance y 1 to the bottom support surface 2 of the nozzle body. 1 has as in the second working position II, where the vertical distance y 2 and the horizontal distance x 2 adjusts to the suction mouth.

Gemäß der Darstellung in Fig. 1 ist der Träger 5 der Bodendüse gabelförmig ausgebildet und weist Gabelarme 10 auf, an denen der Düsenkörper 1 schwenkbeweglich und verschiebbar gelagert ist. Die Schwenkachse 8 ist entlang einer Längsführung 11 zwischen zwei Anschlägen verschiebbar geführt. Im Ausführungsbeispiel besteht die Längsführung 11 aus einem Schlitz, in den ein Zapfen eingreift. Der Darstellung ist zu entnehmen, dass die Längsführung 11 eine als Schräge ausgebildete Führungsfläche aufweist. Stattdessen kann die Längsführung auch eine bogenförmig gekrümmte Führungsfläche aufweisen. Aus Fig. 1 in Verbindung mit den Fig. 3A und 3B geht hervor, dass die Schwenkachse 8 sich in der ersten Arbeitsposition I mit einem vertikalen Abstand y1 bodennah oberhalb einer mittleren Zone der Auflagefläche 2 befindet und dass die Schwenkachse 8 in der zweiten Arbeitsposition II in einem vertikalen Abstand y2 bodenfern oberhalb eines randnahen Bereiches der Auflagefläche 2 positioniert ist. Wird die Bodendüse mit einer Vorwärtsbewegung über eine zu reinigenden Bodenfläche geführt, befindet sich die Schwenkachse 8, welche den Düsenkörper 1 schwenkbeweglich mit dem Träger 5 verbindet, gemäß der Darstellung in Fig. 3A, oberhalb einer mittleren Zone der Auflagefläche 2, und zwar vorzugsweise etwa mittig über der Auflagefläche. Wenn die Bodendüse mit einer Rückwärtsbewegung über die Bodenfläche bewegt wird, nimmt die Schwenkachse 8 die zweite Arbeitsposition II ein, welche in Fig. 3B dargestellt ist. In der zweiten Arbeitsposition II ist die Schwenkachse 8 weit nach hinten verlagert und befindet sich im Bereich des hinteren Randes der Auflagefläche 2 in einer erhöhten Position.As shown in Fig. 1 the support 5 of the floor nozzle is fork-shaped and has fork arms 10, on which the nozzle body 1 is mounted pivotably and displaceably. The pivot axis 8 is guided displaceably along a longitudinal guide 11 between two stops. In the exemplary embodiment, the longitudinal guide 11 consists of a slot in which a pin engages. The illustration shows that the longitudinal guide 11 has a guide surface formed as a bevel. Instead, the Longitudinal guide also have an arcuately curved guide surface. Out Fig. 1 in conjunction with the Fig. 3A and 3B shows that the pivot axis 8 is in the first working position I with a vertical distance y 1 close to the ground above a central zone of the support surface 2 and that the pivot axis 8 in the second working position II in a vertical distance y 2 bodenfern above a near-edge region of the Support surface 2 is positioned. If the floor nozzle is guided with a forward movement over a floor surface to be cleaned, the pivot axis 8, which connects the nozzle body 1 in a pivotable manner to the support 5, is located as shown in FIG Fig. 3A , above a central zone of the support surface 2, and preferably approximately centrally above the support surface. When the floor nozzle is moved with a backward movement over the bottom surface, the pivot axis 8 assumes the second working position II, which in Fig. 3B is shown. In the second working position II, the pivot axis 8 is displaced far to the rear and is located in the region of the rear edge of the support surface 2 in an elevated position.

Der Träger 5 weist im Ausführungsbeispiel zwei auf einer Achse angeordnete Laufrollen 12 zur bodenseitigen Abstützung auf, die bei einer Vorwärtsbewegung der Bodendüse auf einer zu reinigenden Bodenfläche wirksam sind. Die beiden Arbeitspositionen I, II der Schwenkachse 8 sind so festgelegt, dass die Laufrollen 12 auf der zu reinigenden Bodenfläche aufliegen, wenn die Bodendüse mittels eines an das Anschlusselement 6 angeschlossenen Saugrohres 7 in Vorwärtsrichtung über eine Hartbodenfläche 13 bewegt wird. Demgegenüber hat die Laufrolle keinen Bodenkontakt, wenn die Bodendüse mittels des Saugrohres 7 in Rückwärtsrichtung über die Hartbodenfläche 13 bewegt wird (vgl. Fig. 3A und Fig. 3B). Sofern die Bodendüse auf einem hochflorigen Teppichbelag eingesetzt wird, tauchen die Laufrollen bei einer Bewegung der Bodendüse in Rückwärtsrichtung nicht so tief in den Teppichbelag ein wie bei einer Vorwärtsbewegung.The carrier 5 has in the embodiment of two arranged on an axis rollers 12 for bottom support, which are effective in a forward movement of the floor nozzle on a floor surface to be cleaned. The two working positions I, II of the pivot axis 8 are set so that the rollers 12 rest on the floor surface to be cleaned when the floor nozzle is moved by means of a suction pipe 7 connected to the connecting element 6 in the forward direction over a hard floor surface 13. In contrast, the roller has no contact with the ground when the floor nozzle is moved by means of the suction tube 7 in the reverse direction over the hard floor surface 13 (see. Fig. 3A and Fig. 3B ). If the floor nozzle is used on a deep pile carpet, the rollers will dip at one Movement of the floor nozzle in the backward direction not as deep into the carpet as in a forward movement.

Die Fluidverbindung 9 zwischen dem am Träger 5 angeordneten Saugrohr-Anschlusselement 6 und dem Saugkanal 4 des Düsenkörpers 1 muss Relativbewegungen zwischen dem Anschlusselement 6 und dem Saugkanal 4 in horizontaler und vertikaler Richtung ausgleichen. Die Fluidverbindung 9 ist vorzugsweise als flexibles Schlauchteil ausgebildet. Es kann in Form eines Faltenbalgs, eines Wellschlauches oder dergleichen ausgebildet sein.The fluid connection 9 between the suction pipe connection element 6 arranged on the carrier 5 and the suction channel 4 of the nozzle body 1 must compensate for relative movements between the connection element 6 and the suction channel 4 in the horizontal and vertical directions. The fluid connection 9 is preferably designed as a flexible hose part. It may be in the form of a bellows, a corrugated tube or the like.

Das Saugrohr-Anschlusselement 6 weist ein Winkelrohr 14 auf, welches um eine horizontale Drehachse a drehbeweglich an dem Träger angeschlossen ist.The suction pipe connecting element 6 has an angular tube 14 which is connected to the carrier so as to be rotatable about a horizontal axis of rotation a.

Der Düsenkörper kann an seiner Unterseite Dichtungslippen und/oder Borstenstreifen zur randseitigen Abdichtung gegenüber der Bodenfläche aufweisen. Im Rahmen der Erfindung liegt es auch, dass die Dichtungselemente an einem Dichtungsträger befestigt sind, der innerhalb des Düsenkörpers vertikal verstellbar angeordnet oder schwenkbeweglich gelagert ist und zwischen einer oder mehreren Arbeitsstellungen verstellt werden kann.The nozzle body may have on its underside sealing lips and / or bristle strips for marginal sealing relative to the bottom surface. It is also within the scope of the invention that the sealing elements are fastened to a seal carrier, which is arranged vertically adjustable or pivotally mounted within the nozzle body and can be adjusted between one or more working positions.

Claims (10)

Bodendüse für Staubsauger mit,
einem Düsenkörper (1), der eine bodenseitige Auflagefläche (2) mit einem Saugmund (3) sowie einen Saugkanal (4) zum Ableiten eines in den Saugmund (3) einströmenden Saugluftstromes aufweist,
einem Träger (5), der ein Anschlusselement (6) für ein Saugrohr (7) aufweist, und
einer Fluidverbindung (9) zwischen dem Anschlusselement (6) und dem Saugkanal (4),
wobei der Düsenkörper (1) um eine Schwenkachse (8) schwenkbeweglich mit dem Träger (5) verbunden ist und wobei auf das Anschlusselement (6) des Träges (5) wechselweise Druckkräfte und Zugkräfte wirken, wenn die Bodendüse mittels eines an das Anschlusselement (6) angeschlossenen Saugrohres (7) mit Vorwärtsbewegungen und Rückwärtsbewegungen über eine Bodenfläche bewegt wird, dadurch gekennzeichnet, dass die Schwenkachse (8) zwischen zwei in horizontaler Richtung beabstandeten Arbeitspositionen (I, II) bewegbar ist, wobei die Schwenkachse (8) in einer ersten Arbeitsposition (I), die sich infolge einer auf das Anschlusselement (6) wirkenden Druckkraft einstellt, einen geringeren Abstand zum Saugmund (3) aufweist als in einer zweiten Arbeitsposition (II), die sich infolge einer auf das Anschlusselement (6) wirkenden Zugkraft einstellt.Floor nozzle for vacuum cleaner with,
a nozzle body (1) having a bottom-side bearing surface (2) with a suction mouth (3) and a suction channel (4) for discharging a suction air stream flowing into the suction mouth (3),
a support (5) having a connection element (6) for a suction tube (7), and
a fluid connection (9) between the connection element (6) and the suction channel (4),
wherein the nozzle body (1) about a pivot axis (8) pivotally connected to the carrier (5) and wherein the connecting element (6) of the support (5) alternately compressive forces and tensile forces act when the floor nozzle by means of a to the connecting element (6 ) is moved with forward movements and backward movements over a bottom surface, characterized in that the pivot axis (8) between two horizontally spaced working positions (I, II) is movable, wherein the pivot axis (8) in a first working position (I), which adjusts as a result of a force acting on the connecting element (6) compressive force, a smaller distance from the suction mouth (3) than in a second working position (II), which adjusts as a result of acting on the connecting element (6) tensile force. Bodendüse nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkachse (8) in der ersten Arbeitsposition (I) einen geringeren Vertikalabstand zur bodenseitigen Auflagefläche (2) des Düsenkörpers (1) aufweist als in der zweiten Arbeitsposition (II).Floor nozzle according to claim 1, characterized in that the pivot axis (8) in the first working position (I) has a smaller vertical distance to the bottom support surface (2) of the nozzle body (1) than in the second working position (II). Bodendüse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Schwenkachse (8) entlang einer Längsführung (11) zwischen zwei Anschlägen verschiebbar geführt ist.Floor nozzle according to claim 1 or 2, characterized in that the pivot axis (8) is displaceably guided along a longitudinal guide (11) between two stops. Bodendüse nach Anspruch 3, dadurch gekennzeichnet, dass die Längsführung (11) eine als Schräge ausgebildete Führungsfläche und/oder eine bogenförmig gekrümmte Führungsfläche aufweist.Floor nozzle according to claim 3, characterized in that the longitudinal guide (11) has a guide surface formed as a bevel and / or an arcuately curved guide surface. Bodendüse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Schwenkachse (8) sich in der ersten Arbeitsposition (I) bodennah oberhalb einer mittleren Zone der Auflagefläche (2) befindet und dass die Schwenkachse (8) in der zweiten Arbeitsposition (II) bodenfern oberhalb eines randnahen Bereiches R der Auflagefläche (2) positioniert ist.Floor nozzle according to one of claims 1 to 4, characterized in that the pivot axis (8) in the first working position (I) near the ground above a central zone of the support surface (2) and that the pivot axis (8) in the second working position (II ) is remote above a region R near the edge of the support surface (2) is positioned. Bodendüse nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Träger (5) zumindest eine Laufrolle (12) zur bodenseitigen Abstützung bei einer Vorwärtsbewegung der Bodendüse aufweist.Floor nozzle according to one of claims 1 to 5, characterized in that the carrier (5) has at least one roller (12) for the bottom support during a forward movement of the floor nozzle. Bodendüse nach Anspruch 6, dadurch gekennzeichnet, dass die beiden Arbeitspositionen (I, II) der Schwenkachse (8) so festgelegt sind, dass die Laufrolle des Trägers (5) auf der Bodenfläche aufliegt, wenn die Bodendüse mittels eines an das Anschlusselement (6) angeschlossenen Saugrohres (7) in Vorwärtsrichtung über eine Hartbodenfläche bewegt wird, und dass der Träger (5) keinen Bodenkontakt hat, wenn die Bodendüse mittels des Saugrohres (7) in Rückwärtsrichtung über die Hartbodenfläche bewegt wird.Floor nozzle according to claim 6, characterized in that the two working positions (I, II) of the pivot axis (8) are fixed so that the roller of the carrier (5) rests on the bottom surface when the floor nozzle by means of a to the connecting element (6). connected suction pipe (7) is moved in the forward direction over a hard floor surface, and that the carrier (5) has no ground contact when the floor nozzle by means of the suction tube (7) is moved in the reverse direction over the hard floor surface. Bodendüse nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Träger (5) gabelförmig ausgebildet ist und dass der Düsenkörper (1) an Gabelarmen (10) des Trägers (5) schwenkbeweglich und verschiebbar gelagert ist.Floor nozzle according to one of claims 1 to 7, characterized in that the carrier (5) is fork-shaped and that the nozzle body (1) on fork arms (10) of the carrier (5) is mounted pivotably and displaceably. Bodendüse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, das die Fluidverbindung (9) zwischen dem Anschlusselement (6) für ein Saugrohr (7) und dem Saugkanal (4) als flexibles Leitungselement ausgebildet ist.Floor nozzle according to one of claims 1 to 8, characterized in that the fluid connection (9) between the connection element (6) for a suction tube (7) and the suction channel (4) is designed as a flexible conduit element. Bodendüse nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Anschlusselement (6) ein Winkelrohr (14) aufweist, welches um eine horizontale Drehachse (a) drehbeweglich an den Träger (5) angeschlossen ist.Floor nozzle according to one of claims 1 to 9, characterized in that the connecting element (6) has an angular tube (14) which is connected to a rotational axis about a horizontal axis of rotation (a) to the carrier (5).
EP15200871.0A 2015-01-07 2015-12-17 Floor nozzle for a vacuum cleaner Active EP3042597B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015100110.1A DE102015100110A1 (en) 2015-01-07 2015-01-07 Floor nozzle for vacuum cleaner

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EP3042597B1 EP3042597B1 (en) 2017-08-09

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CN105747992B (en) 2019-08-02

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