EP3257417B1 - Vacuum cleaner jet - Google Patents

Vacuum cleaner jet Download PDF

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Publication number
EP3257417B1
EP3257417B1 EP16180499.2A EP16180499A EP3257417B1 EP 3257417 B1 EP3257417 B1 EP 3257417B1 EP 16180499 A EP16180499 A EP 16180499A EP 3257417 B1 EP3257417 B1 EP 3257417B1
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EP
European Patent Office
Prior art keywords
suction mouth
vacuum cleaner
cleaner nozzle
mouth edge
nozzle according
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.)
Active
Application number
EP16180499.2A
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German (de)
French (fr)
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EP3257417C0 (en
EP3257417A3 (en
EP3257417A2 (en
Inventor
Hans-Joachim Steudtner
Horst Dilger
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Wessel Werk GmbH
Original Assignee
Wessel Werk GmbH
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Publication date
Application filed by Wessel Werk GmbH filed Critical Wessel Werk GmbH
Priority to CN201710446039.XA priority Critical patent/CN107495898A/en
Publication of EP3257417A2 publication Critical patent/EP3257417A2/en
Publication of EP3257417A3 publication Critical patent/EP3257417A3/en
Application granted granted Critical
Publication of EP3257417C0 publication Critical patent/EP3257417C0/en
Publication of EP3257417B1 publication Critical patent/EP3257417B1/en
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Classifications

    • 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
    • A47L9/04—Nozzles with driven brushes or agitators
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0483—Reciprocating or oscillating tools, e.g. vibrators, agitators, beaters

Definitions

  • the invention relates to a vacuum cleaner nozzle with a housing and a suction mouth arranged on the underside of the housing (housing bottom) which is delimited by at least one suction mouth edge at the front in a working direction and a suction mouth edge at the rear in the working direction.
  • the front edge of the suction mouth and the rear edge of the suction mouth extend in a horizontal plane.
  • a suction channel is arranged inside the housing, to which a suction fan can be connected to generate a suction air flow.
  • the suction air flow enters the suction channel through the suction mouth.
  • both the cleaning properties and the mobility of a vacuum cleaner nozzle are decisively influenced by the design of the suction mouth edges of the adjacent areas of the underside of the housing (sliding sole).
  • the edges of the suction mouth come into contact with the surface of the floor covering.
  • the suction mouth lies to a certain extent sealingly against the floor surface, so that the suction air flow is guided through the textile material. This means that dirt particles embedded in the textile fibers can also be loosened and removed.
  • the Post-Released EP 3 047 775 A1 also shows a generic vacuum cleaner nozzle.
  • the invention is based on the object of specifying a vacuum cleaner nozzle which has good cleaning properties, protects a textile floor material to be cleaned and at the same time has good mobility and maneuverability in suction operation.
  • the rear edge of the suction mouth is immediately followed by a sliding slope, which is inclined at an angle of between 1.5° and 2.5°, in particular 2°, to the horizontal plane and extends without interruption over a length of at least 30 mm, starting from the rear edge of the suction mouth extends backwards.
  • the sliding bevel extends uninterruptedly from the rear edge of the suction mouth over a length of at least 35 mm.
  • the sliding bevel has a length of 35 to 45 mm, particularly preferably about 40 mm, in the working direction.
  • the vacuum cleaner nozzle can be securely supported so that even with additional suction forces occurring during suction operation, the suction mouth edges sinking in too deeply with excessive stress on the fibers of a textile floor covering can be reliably avoided.
  • the sliding bevel - in contrast to a horizontally aligned plateau - still allows sufficient air transport to the edge of the suction mouth.
  • the cleaning effect can be significantly increased compared to a horizontal configuration.
  • the sliding bevel is designed without interruption, i.e. there are no openings or breakthroughs provided in this area, such as these must be provided for adjustable support elements such as sealing lips or bristle strips.
  • a defined flow pattern can be established over the entire length and the entire width of the slide slope.
  • the angle of inclination of the sliding bevel in the working direction can be determined individually at each point on the surface relative to the horizontal plane or a plane lying parallel thereto and has any value in the angular range claimed by the invention at each point on the surface.
  • the immediate, i. H. in particular without an intermediate plateau and with a radius of curvature of less than 2 mm, the sliding bevel adjoining the rear edge of the suction mouth thus functionally forms part of the edge of the suction mouth.
  • the sliding bevel extends in a transverse direction over at least 75% of the width of the rear edge of the suction mouth.
  • the sliding bevel can particularly preferably extend over more than 90%, in particular more than 95%, of the width of the rear edge of the suction mouth.
  • the width of the rear edge of the suction mouth is preferably at least 80%, particularly preferably at least 90%, in particular more than 95% of the width of the housing.
  • the suction mouth and/or one behind it arranged bevel have a different configuration, in particular for edge suction, ie for cleaning by a lateral suction air stream entering the housing.
  • the sliding bevel extends over the entire width of the rear edge of the suction mouth. This prevents a deviating inflow behavior outside of the sliding bevel according to the invention. At the same time, the sliding bevel also provides a particularly large contact surface, which results in good force distribution and good lateral support.
  • the sliding bevel has a linear gradient in the working direction in each longitudinal section.
  • the angle of inclination does not change in the longitudinal direction (working direction). In the transverse direction, however, the angle of inclination can vary within the range according to the invention.
  • the sliding bevel has the same linear gradient in the working direction in each longitudinal section. This means that the angle of inclination of the sliding surface has the same value at every point on the surface. As a result, a particularly uniform flow onto the rear edge of the suction mouth can be achieved both in the longitudinal direction and in the transverse direction. Furthermore, a punctiform load on the floor covering to be cleaned is avoided.
  • the rear edge of the suction mouth is straight.
  • a particularly simple and uniform flow behavior can be produced.
  • the manufacture of the vacuum cleaner nozzle is simplified.
  • the sliding bevel is designed as a flat surface.
  • the suction mouth can be prevented from sinking into a flexible floor covering by more than the height difference between the rear edge of the suction mouth and the highest point of the sliding slope, since the sliding slope is then already in full contact with the upper side of the floor covering. The load is distributed evenly and without local stresses.
  • the rear edge of the suction mouth is curved.
  • the curvature is, in particular, mirror-symmetrical about a central plane of the vacuum cleaner nozzle, with the lateral ends of the rear edge of the suction mouth being positioned further forward in the working direction than the central vertex.
  • the curvature can, in particular, be in the form of a circular arc segment or a polynomial curve.
  • At least one thread lifter can be embedded in the sliding bevel.
  • the thread lifter is expediently positioned in such a way that it does not or only insignificantly disturb the flow on the surface of the sliding bevel.
  • it can be embedded in the sliding bevel in such a way that the textile material of the thread lifter, in particular inclined bristle velor, is flush with the surrounding surface of the sliding bevel in the compressed state.
  • a slide-on bevel is arranged in front of the front edge of the suction mouth. Since the vacuum cleaner nozzle is already prevented from sinking into the floor covering due to the large-area sliding slope according to the invention, the sliding-on slope can also be formed with a small sliding-on angle. According to the invention, the sliding-on angle is less than 10°, in particular 7° to 10°. Due to the slight upstand, it is still possible that on the Dirt particles lying on the floor surface get under the slide-on slope and thus in the effective area of the suction air flow.
  • Support rollers are expediently arranged on the housing behind the sliding bevel, which support the vacuum cleaner nozzle against tilting during a backward movement during operation. Due to the improved supporting effect of the sliding bevel according to the invention, however, the support rollers can be made smaller.
  • An adjustable support element in particular a sealing lip or a bristle strip, is expediently arranged on the housing.
  • the support element can be adjusted between a first, raised, functional position and a second, lowered, functional position.
  • switching between carpet operation and smooth floor operation can be provided.
  • the support element In the raised state, the support element is moved so far into the housing that the suction mouth can rest on the floor surface to be cleaned and the sliding bevel according to the invention is fully effective.
  • a movement into the lowered functional position lifts the vacuum cleaner nozzle off the floor surface for operation on smooth floors, so that a suction air flow can pass between the floor surface and the underside of the housing.
  • the adjustable support element is expediently arranged in front of the suction mouth. This ensures that the vacuum cleaner nozzle is evenly supported on both sides when operating on smooth floors.
  • a sealing element in particular a sealing lip, can also be arranged behind the sliding bevel, which can be adjusted concurrently with the support element and provides a seal to the rear in smooth floor operation, see above that the incoming suction air flow is concentrated on the front area and the side areas.
  • FIG. 1 an embodiment of a vacuum cleaner nozzle according to the invention is shown with a housing 1, the underside of which is visible.
  • a suction mouth 2 is arranged therein, which is delimited by a suction mouth edge 3 at the front in a working direction x and a suction mouth edge 4 at the rear in the working direction x.
  • the front suction mouth edge 3 and the rear suction mouth edge 4 extend in a horizontal plane H.
  • the suction mouth 2 runs essentially horizontally in a transverse direction y, with the front suction mouth edge 3 and the rear suction mouth edge 4 each being so concavely curved that the suction mouth 2 tapers towards its lateral edge areas 5 .
  • the rear suction mouth edge 4 is immediately followed by a sliding bevel 6 which is inclined relative to the horizontal plane H by an angle ⁇ of between 1° and 5°, in particular between 1.5° and 2.5°.
  • the angle ⁇ in the 2 shown disproportionately large.
  • the sliding bevel 6 extends Glide bevel 6 starting from the rear suction mouth edge 4 without interruption over a length I of at least 30 mm.
  • the sliding bevel 6 extends in the transverse direction y over a width b which corresponds to approximately 75% of the width B of the rear edge 4 of the suction mouth.
  • the sliding bevel 6 has a linear slope with a constant slope angle ⁇ .
  • the figure also shows that a thread lifter is embedded both in the sliding bevel 6 and in a slide-on bevel 7 arranged in front of the front edge 3 of the suction mouth. Its bristles made of slanting bristles protrude slightly over the surface of the sliding slope 6 or the sliding slope 7 in the stress-free, relaxed state. However, they can be compressed to such an extent that they are flush with the surface.
  • the slide-on slope is inclined by a slide-on angle ⁇ of approximately 10° (shown exaggerated) in relation to the horizontal.
  • a support element in the form of a bristle strip 9 is also arranged in front of the slide-on slope 7, which can be moved back and forth between a retracted carpeted position and an extended smooth floor position.
  • Support rollers 10 are arranged behind the sliding slope 6, the lowest point of which touches the horizontal plane H.
  • suction channel 11 located inside the housing can be connected to a vacuum cleaner fan by means of a suction opening via a suction nozzle 12 .

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

Description

Die Erfindung betrifft eine Staubsaugerdüse mit einem Gehäuse und einem an einer Unterseite des Gehäuses (Gehäuseunterseite) angeordneten Saugmund, der durch zumindest eine in eine Arbeitsrichtung vordere Saugmundkante und eine in der Arbeitsrichtung hintere Saugmundkante begrenzt ist. Die vordere Saugmundkante und die hintere Saugmundkante erstrecken sich dabei in einer Horizontalebene.The invention relates to a vacuum cleaner nozzle with a housing and a suction mouth arranged on the underside of the housing (housing bottom) which is delimited by at least one suction mouth edge at the front in a working direction and a suction mouth edge at the rear in the working direction. The front edge of the suction mouth and the rear edge of the suction mouth extend in a horizontal plane.

Im Innern des Gehäuses ist ein Saugkanal angeordnet, an den ein Sauggebläse zur Erzeugung eines Saugluftstromes angeschlossen werden kann. Der Saugluftstrom tritt im Betrieb durch den Saugmund in den Saugkanal ein. Hierdurch können Schmutzpartikel von einer zu reinigenden Bodenfläche gelöst und mit dem Saugluftstrom abgezogen werden.A suction channel is arranged inside the housing, to which a suction fan can be connected to generate a suction air flow. During operation, the suction air flow enters the suction channel through the suction mouth. As a result, dirt particles can be loosened from a floor surface to be cleaned and drawn off with the suction air flow.

Bei einer Staubsaugerdüse werden sowohl die Reinigungseigenschaften als auch die Beweglichkeit einer Staubsaugerdüse durch die Gestaltung der Saugmundkanten der daran angrenzenden Bereiche der Gehäuseunterseite (Gleitsohle) entscheidend mitbestimmt.In the case of a vacuum cleaner nozzle, both the cleaning properties and the mobility of a vacuum cleaner nozzle are decisively influenced by the design of the suction mouth edges of the adjacent areas of the underside of the housing (sliding sole).

Für den Saugbetrieb auf textilen Bodenbelägen, insbesondere Teppichböden, ist es häufig vorgesehen, dass die Saugmundkanten mit der Oberfläche des Bodenbelags in Kontakt kommen. Hierdurch liegt der Saugmund in einem gewissen Maße dichtend an der Bodenfläche an, so dass der Saugluftstrom durch das textile Material hindurchgeleitet wird. Dadurch lassen sich auch in den Textilfasern eingebettete Schmutzpartikel lösen und entfernen.For the suction operation on textile floor coverings, in particular carpets, it is often intended that the edges of the suction mouth come into contact with the surface of the floor covering. As a result, the suction mouth lies to a certain extent sealingly against the floor surface, so that the suction air flow is guided through the textile material. This means that dirt particles embedded in the textile fibers can also be loosened and removed.

Für eine gute Benutzbarkeit muss jedoch ein sinnvoller Kompromiss zwischen einer guten Abdichtung (die zwar zu einer erhöhten Reinigungsleistung führt jedoch auch ein Festsaugen am Untergrund bzw. ein Einsinken in einen Teppichflor zur Folge haben kann) und einer guten Beweglichkeit der Staubsaugerdüse gefunden werden. Es hat sich als praktikabel herausgestellt, die Bodenfläche der Staubsaugerdüse vor und/hinter dem Saugmund in einem Winkel von etwa 15° bis 30° anzuschrägen. Hierdurch wird eine Keilfläche bereitgestellt, durch die eine in den Teppichflor eingesunkene Staubsaugerdüse bei einer Vorwärts- oder Rückwärtsbewegung (in Arbeitsrichtung) wieder aus dem textilen Bodenbelag herausgehoben wird. Bei einer üblichen Breite der Schräge von etwa 10 bis 20 mm wird zwischen der vorderen und hinteren Kante eine ausreichende Höhendifferenz bereitgestellt, um auch bei einem tiefen Einsinken ein sicheres Anheben der Staubsaugerdüse zu ermöglichen. Das Einsinken in den textilen Bodenbelag kann jedoch im Allgemeinen nicht verhindert werden, was zu einer erhöhten Belastung der Textilfasern führt. Dies ist insbesondere bei hochwertigen Teppichen problematisch.For good usability, however, a sensible compromise must be made between good sealing (which leads to increased cleaning performance however, it can also result in sucking onto the ground or sinking into a carpet pile) and good mobility of the vacuum cleaner nozzle. It has proven to be practical to bevel the bottom surface of the vacuum cleaner nozzle in front of and/or behind the suction mouth at an angle of about 15° to 30°. This provides a wedge surface through which a vacuum cleaner nozzle that has sunken into the carpet pile is lifted out of the textile floor covering again during a forward or backward movement (in the working direction). With a usual width of the bevel of about 10 to 20 mm, a sufficient difference in height is provided between the front and rear edges to enable the vacuum cleaner nozzle to be raised safely even if it sinks in deeply. However, sinking into the textile floor covering cannot generally be prevented, which leads to increased stress on the textile fibers. This is particularly problematic with high-quality carpets.

Bei besonders aufwendigen Staubsaugerdüsen ist es überdies bekannt, zwischen einer Saugmundkante und einer daneben angeordneten Schräge einen Plateaubereich von geringer Breite (üblicherweise etwa 3 bis 5 mm) vorzusehen. Dieser stellt in Kontakt mit einem textilen Bodenbelag eine vergrößerte Stand- bzw. Gleitfläche zur Verfügung, auf die die auftretenden Kräfte besser verteilt werden können. Hierdurch wird das Einsinken in den Teppichbelag reduziert. Neben der aufwendigeren Fertigung ist hieran überdies nachteilig, dass die Staugsauberdüse im Bereich des Plateaus dichtend an der Oberfläche des Bodenbelags anliegt. Dadurch wird der Weg, den der Saugluftstrom durch das Bodenmaterial zurücklegen muss und somit auch der Strömungswiderstand vergrößert. Bei gleichbleibender Saugleistung nimmt infolgedessen hierdurch der Volumenstrom und somit auch die Reinigungswirkung erheblich ab.In the case of particularly complex vacuum cleaner nozzles, it is also known to provide a plateau region of small width (usually about 3 to 5 mm) between an edge of the suction mouth and a bevel arranged next to it. In contact with a textile floor covering, this provides an enlarged standing or sliding surface over which the forces that occur can be better distributed. This reduces sinking into the carpeting. In addition to the more complex production, this is also disadvantageous in that the vacuum cleaner nozzle bears sealingly against the surface of the floor covering in the area of the plateau. This increases the distance that the suction air flow has to cover through the floor material and thus also the flow resistance. As a result, while the suction power remains the same, the volume flow and thus also the cleaning effect decreases considerably.

Aus EP 0 611 545 A1 ist eine Staubsaugerdüse mit den Merkmalen des Oberbegriffs auf Anspruch 1 bekannt.Out of EP 0 611 545 A1 a vacuum cleaner nozzle with the features of the preamble to claim 1 is known.

Die nachveröffentlichte EP 3 047 775 A1 zeigt ebenfalls einen gattungsgemäße Staubsaugerdüse.The Post-Released EP 3 047 775 A1 also shows a generic vacuum cleaner nozzle.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Staubsaugerdüse anzugeben, welche gute Reinigungseigenschaften aufweist, ein zu reinigendes textiles Bodenmaterial schont und gleichzeitig im Saugbetrieb eine gute Beweglichkeit und Manövrierbarkeit aufweist.Against this background, the invention is based on the object of specifying a vacuum cleaner nozzle which has good cleaning properties, protects a textile floor material to be cleaned and at the same time has good mobility and maneuverability in suction operation.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Staubsaugerdüse gemäß Anspruch 1. Bevorzugte Ausgestaltungen sind in den abhängigen Unteransprüchen angegeben.The object of the invention and the solution to this problem is a vacuum cleaner nozzle according to claim 1. Preferred developments are specified in the dependent subclaims.

Erfindungsgemäß schließt sich unmittelbar an die hintere Saugmundkante eine Gleitschräge an, die gegenüber der Horizontalebene um einen Winkel zwischen 1,5° und 2,5°, insbesondere 2° geneigt ist und sich ausgehend von der hinteren Saugmundkante unterbrechungsfrei über eine Länge von zumindest 30 mm nach hinten erstreckt. Vorzugsweise erstreckt sich die Gleitschräge von der hinteren Saugmundkante unterbrechungsfrei über eine Länge von zumindest 35 mm. Insbesondere weist die Gleitschräge in der Arbeitsrichtung eine Länge von 35 bis 45, besonders bevorzugt von etwa 40 mm auf. Durch die besonders großflächige und nahezu horizontal ausgerichtete Gleitschräge kann die Staubsaugerdüse sicher abgestützt werden, dass selbst bei im Saugbetrieb zusätzlich auftretenden Ansaugkräften ein zu tiefes Einsinken der Saugmundkanten mit einer übermäßigen Belastung der Fasern eines textilen Bodenbelages sicher vermieden werden kann. Überraschenderweise hat es sich gezeigt, dass durch die leichte Anschrägung von 1° bis 5° die Gleitschräge - im Gegensatz zu einem horizontal ausgerichteten Plateau - weiterhin einen ausreichenden Lufttransport zur Saugmundkante hin ermöglicht. Hierdurch kann die Reinigungswirkung im Vergleich zu einer horizontalen Ausgestaltung erheblich gesteigert werden.According to the invention, the rear edge of the suction mouth is immediately followed by a sliding slope, which is inclined at an angle of between 1.5° and 2.5°, in particular 2°, to the horizontal plane and extends without interruption over a length of at least 30 mm, starting from the rear edge of the suction mouth extends backwards. Preferably, the sliding bevel extends uninterruptedly from the rear edge of the suction mouth over a length of at least 35 mm. In particular, the sliding bevel has a length of 35 to 45 mm, particularly preferably about 40 mm, in the working direction. Due to the particularly large and almost horizontally aligned sliding bevel, the vacuum cleaner nozzle can be securely supported so that even with additional suction forces occurring during suction operation, the suction mouth edges sinking in too deeply with excessive stress on the fibers of a textile floor covering can be reliably avoided. Surprisingly, it has been shown that due to the slight bevel of 1° to 5°, the sliding bevel - in contrast to a horizontally aligned plateau - still allows sufficient air transport to the edge of the suction mouth. As a result, the cleaning effect can be significantly increased compared to a horizontal configuration.

Die Gleitschräge ist erfindungsgemäß unterbrechungsfrei ausgebildet, d.h. es sind in diesem Bereich keine Öffnungen oder Durchbrüche vorgesehen, wie diese beispielsweise für verstellbare Abstützelemente wie Dichtlippen oder Borstenstreifen vorgesehen sein müssen. Dadurch kann sich im Rahmen der Erfindung über die gesamte Länge und die gesamte Breite der Gleitschräge ein definiertes Strömungsmuster einstellen. Der Neigungswinkel der Gleitschräge in der Arbeitsrichtung kann in jeden Flächenpunkt individuell gegenüber der Horizontalebene bzw. einer hierzu parallel liegenden Ebene bestimmt werden und weist in jedem Flächenpunkt einen beliebigen Wert im erfindungsgemäß beanspruchten Winkelbereich auf. Die unmittelbar, d. h. insbesondere ohne zwischengelagertes Plateau und mit einem Krümmungsradius von weniger als 2 mm, an die hintere Saugmundkante anschließende Gleitschräge bildet somit funktionell einen Teil der Saugmundkante.According to the invention, the sliding bevel is designed without interruption, i.e. there are no openings or breakthroughs provided in this area, such as these must be provided for adjustable support elements such as sealing lips or bristle strips. As a result, within the scope of the invention, a defined flow pattern can be established over the entire length and the entire width of the slide slope. The angle of inclination of the sliding bevel in the working direction can be determined individually at each point on the surface relative to the horizontal plane or a plane lying parallel thereto and has any value in the angular range claimed by the invention at each point on the surface. The immediate, i. H. in particular without an intermediate plateau and with a radius of curvature of less than 2 mm, the sliding bevel adjoining the rear edge of the suction mouth thus functionally forms part of the edge of the suction mouth.

In einer bevorzugten Ausgestaltung erstreckt sich die Gleitschräge in einer Querrichtung über zumindest 75% der Breite der hinteren Saugmundkante. Hierdurch wird das Anströmverhalten der hinteren Saugmundkante nahezu ausschließlich durch die erfindungsgemäße Gleitschräge bestimmt. Besonders bevorzugt kann sich die Gleitschräge über mehr als 90%, insbesondere mehr als 95% der Breite der hinteren Saugmundkante erstrecken. Die Breite der hinteren Saugmundkante beträgt dabei vorzugsweise zumindest 80 %, besonders bevorzugt zumindest 90 %, insbesondere mehr als 95 % der Breite des Gehäuses. In den verbleibenden Bereichen, insbesondere in symmetrisch angeordneten Randbereichen, kann der Saugmund und/oder eine dahinter angeordnete Abschrägung eine abweichende Ausgestaltung, insbesondere zur Randabsaugung, d.h. zur Reinigung durch einen seitlichen in das Gehäuse eintretenden Saugluftstrom, aufweisen.In a preferred embodiment, the sliding bevel extends in a transverse direction over at least 75% of the width of the rear edge of the suction mouth. As a result, the inflow behavior of the rear edge of the suction mouth is determined almost exclusively by the sliding bevel according to the invention. The sliding bevel can particularly preferably extend over more than 90%, in particular more than 95%, of the width of the rear edge of the suction mouth. The width of the rear edge of the suction mouth is preferably at least 80%, particularly preferably at least 90%, in particular more than 95% of the width of the housing. In the remaining areas, in particular in symmetrically arranged edge areas, the suction mouth and/or one behind it arranged bevel have a different configuration, in particular for edge suction, ie for cleaning by a lateral suction air stream entering the housing.

In einer ganz besonders bevorzugten Ausgestaltung erstreckt sich die Gleitschräge über die gesamte Breite der hinteren Saugmundkante. Hierdurch wird ein abweichendes Anströmverhalten außerhalb der erfindungsgemäßen Gleitschräge verhindert. Gleichzeitig stellt die Gleitschräge so auch eine besonders große Auflagefläche bereit, die in einer guten Kraftverteilung und in einer guten seitlichen Abstützung resultiert.In a particularly preferred embodiment, the sliding bevel extends over the entire width of the rear edge of the suction mouth. This prevents a deviating inflow behavior outside of the sliding bevel according to the invention. At the same time, the sliding bevel also provides a particularly large contact surface, which results in good force distribution and good lateral support.

In einer bevorzugten Ausgestaltung weist die Gleitschräge in Arbeitsrichtung in jedem Längsschnitt eine lineare Steigung auf. Der Neigungswinkel ändert sich somit in Längsrichtung (Arbeitsrichtung) nicht. In der Querrichtung kann der Neigungswinkel jedoch im erfindungsgemäßen Bereich variieren.In a preferred embodiment, the sliding bevel has a linear gradient in the working direction in each longitudinal section. The angle of inclination does not change in the longitudinal direction (working direction). In the transverse direction, however, the angle of inclination can vary within the range according to the invention.

In einer besonders bevorzugten Ausgestaltung weist die Gleitschräge in Arbeitsrichtung in jedem Längsschnitt dieselbe lineare Steigung auf. Damit hat der Neigungswinkel der Gleitfläche in jedem Flächenpunkt denselben Wert. Hierdurch lässt sich sowohl im Verlauf der Längsrichtung als auch der Querrichtung eine besonders gleichmäßige Anströmung der hinteren Saugmundkante erreichen. Weiterhin wird eine punktuelle Belastung des zu reinigenden Bodenbelages vermieden.In a particularly preferred embodiment, the sliding bevel has the same linear gradient in the working direction in each longitudinal section. This means that the angle of inclination of the sliding surface has the same value at every point on the surface. As a result, a particularly uniform flow onto the rear edge of the suction mouth can be achieved both in the longitudinal direction and in the transverse direction. Furthermore, a punctiform load on the floor covering to be cleaned is avoided.

In einer bevorzugten Ausgestaltung ist die hintere Saugmundkante gerade ausgebildet. Hierdurch kann ein besonders einfaches und gleichförmiges Strömungsverhalten hergestellt werden. Weiterhin vereinfacht sich die Herstellung der Staubsaugerdüse.In a preferred embodiment, the rear edge of the suction mouth is straight. As a result, a particularly simple and uniform flow behavior can be produced. Furthermore, the manufacture of the vacuum cleaner nozzle is simplified.

In einer besonders bevorzugten Ausgestaltung ist die Gleitschräge als ebene Fläche ausgebildet. Hierdurch kann ein Einsinken des Saugmundes in einen nachgiebigen Bodenbelag um mehr als die Höhendifferenz zwischen der hinteren Saugmundkante und dem höchsten Punkt der Gleitschräge sicher vermieden werden, da dann die Gleitschräge bereits vollflächig mit der Oberseite des Bodenbelags in Kontakt ist. Dabei erfolgt die Belastung gleichmäßig und ohne lokale Beanspruchungen.In a particularly preferred embodiment, the sliding bevel is designed as a flat surface. As a result, the suction mouth can be prevented from sinking into a flexible floor covering by more than the height difference between the rear edge of the suction mouth and the highest point of the sliding slope, since the sliding slope is then already in full contact with the upper side of the floor covering. The load is distributed evenly and without local stresses.

In einer weiteren bevorzugten Ausgestaltung ist die hintere Saugmundkante gekrümmt ausgebildet. Die Krümmung ist insbesondere spiegelsymmetrisch um eine Zentralebene der Staubsaugerdüse ausgebildet, wobei die seitlichen Enden der hinteren Saugmundkante in Arbeitsrichtung weiter vorne positioniert sind als der mittig liegende Scheitelpunkt. Die Krümmung kann insbesondere als Kreisbogensegment oder Polynomzug ausgebildet sein.In a further preferred embodiment, the rear edge of the suction mouth is curved. The curvature is, in particular, mirror-symmetrical about a central plane of the vacuum cleaner nozzle, with the lateral ends of the rear edge of the suction mouth being positioned further forward in the working direction than the central vertex. The curvature can, in particular, be in the form of a circular arc segment or a polynomial curve.

In einer Ausgestaltungsform kann in die Gleitschräge zumindest ein Fadenheber eingelassen sein. Der Fadenheber ist dazu zweckmäßigerweise so positioniert, dass er den Strömungsfluss an der Oberfläche der Gleitschräge nicht oder nur unwesentlich stört. Dazu kann er so in die Gleitschräge eingelassen sein, dass das textile Material des Fadenhebers, insbesondere Schrägborsten-Velours, im komprimierten Zustand flächenbündig mit der es umgebenden Oberfläche der Gleitschräge fluchtet.In one embodiment, at least one thread lifter can be embedded in the sliding bevel. For this purpose, the thread lifter is expediently positioned in such a way that it does not or only insignificantly disturb the flow on the surface of the sliding bevel. For this purpose, it can be embedded in the sliding bevel in such a way that the textile material of the thread lifter, in particular inclined bristle velor, is flush with the surrounding surface of the sliding bevel in the compressed state.

Erfindungsgemäß ist vor der vorderen Saugmundkante eine Aufgleitschräge angeordnet. Da ein Einsinken der Staubsaugerdüse in den Bodenbelag bereits aufgrund der großflächigen erfindungsgemäßen Gleitschräge verhindert wird, kann auch die Aufgleitschräge mit einem geringen Aufgleitwinkel gebildet sein. Erfindungsgemäß beträgt der Aufgleitwinkel weniger als 10°, insbesondere 7° bis 10°. Durch die leichte Aufkantung ist es weiterhin möglich, dass auf der Bodenfläche aufliegende Schmutzpartikel unter die Aufgleitschräge und damit in den Wirkungsbereich des Saugluftstromes gelangen.According to the invention, a slide-on bevel is arranged in front of the front edge of the suction mouth. Since the vacuum cleaner nozzle is already prevented from sinking into the floor covering due to the large-area sliding slope according to the invention, the sliding-on slope can also be formed with a small sliding-on angle. According to the invention, the sliding-on angle is less than 10°, in particular 7° to 10°. Due to the slight upstand, it is still possible that on the Dirt particles lying on the floor surface get under the slide-on slope and thus in the effective area of the suction air flow.

Zweckmäßigerweise sind hinter der Gleitschräge an dem Gehäuse Tragrollen angeordnet, welche die Staubsaugerdüse bei einer Rückwärtsbewegung im Betrieb gegen ein Verkippen abstützen. Aufgrund der verbesserten Abstützwirkung der erfindungsgemäßen Gleitschräge können die Tragrollen jedoch kleiner dimensioniert werden.Support rollers are expediently arranged on the housing behind the sliding bevel, which support the vacuum cleaner nozzle against tilting during a backward movement during operation. Due to the improved supporting effect of the sliding bevel according to the invention, however, the support rollers can be made smaller.

Zweckmäßigerweise ist an dem Gehäuse ein verstellbares Tragelement, insbesondere eine Dichtlippe oder eine Borstenleiste angeordnet. Das Tragelement ist zwischen einer ersten, angehobenen Funktionsstellung und einer zweiten, abgesenkten Funktionsstellung verstellbar. Hierdurch kann ein Umschalten zwischen einem Teppichbodenbetrieb und einem Glattbodenbetrieb bereitgestellt werden. Im angehobenen Zustand ist das Tragelement so weit in das Gehäuse hineinbewegt, dass der Saugmund auf der zu reinigenden Bodenfläche aufliegen kann und die erfindungsgemäße Gleitschräge in vollem Maße wirksam ist. Durch eine Bewegung in die abgesenkte Funktionsstellung wird die Staubsaugerdüse für einen Betrieb auf Glattböden von der Bodenfläche abgehoben, so dass ein Saugluftstrom zwischen der Bodenfläche und der Gehäuseunterseite hindurchtreten kann.An adjustable support element, in particular a sealing lip or a bristle strip, is expediently arranged on the housing. The support element can be adjusted between a first, raised, functional position and a second, lowered, functional position. As a result, switching between carpet operation and smooth floor operation can be provided. In the raised state, the support element is moved so far into the housing that the suction mouth can rest on the floor surface to be cleaned and the sliding bevel according to the invention is fully effective. A movement into the lowered functional position lifts the vacuum cleaner nozzle off the floor surface for operation on smooth floors, so that a suction air flow can pass between the floor surface and the underside of the housing.

In Kombination mit hinter der Gleitschräge angeordneten Tragrollen ist das verstellbare Tragelement zweckmäßigerweise vor dem Saugmund angeordnet. Hierdurch kann im Glattbodenbetrieb eine beidseitige und gleichmäßige Abstützung der Staubsaugerdüse gewährleistet werden. Optional kann zusätzlich hinter der Gleitschräge ein Dichtelement, insbesondere eine Dichtlippe angeordnet sein, welches gleichlaufenden mit dem Tragelement verstellbar ist und im Glattbodenbetrieb eine Abdichtung nach hinten bereitstellt, so dass der eintretende Saugluftstrom auf den Frontbereich und die Seitenbereiche konzentriert wird.In combination with support rollers arranged behind the sliding bevel, the adjustable support element is expediently arranged in front of the suction mouth. This ensures that the vacuum cleaner nozzle is evenly supported on both sides when operating on smooth floors. Optionally, a sealing element, in particular a sealing lip, can also be arranged behind the sliding bevel, which can be adjusted concurrently with the support element and provides a seal to the rear in smooth floor operation, see above that the incoming suction air flow is concentrated on the front area and the side areas.

Die Erfindung wird nachfolgend anhand von lediglich ein Ausführungsbeispiel darstellenden Figuren erläutert. Es zeigen schematisch:

Fig. 1
eine Unteransicht einer erfindungsgemäßen Staubsaugerdüse und
Fig. 2
einen stark vereinfachten Teilschnitt der Staubsaugerdüse aus Fig. 1.
The invention is explained below with reference to figures that merely show an exemplary embodiment. They show schematically:
1
a bottom view of a vacuum cleaner nozzle according to the invention and
2
a highly simplified partial section of the vacuum cleaner nozzle 1 .

In Fig. 1 ist eine Ausführungsform einer erfindungsgemäßen Staubsaugerdüse mit einem Gehäuse 1 dargestellt, deren Gehäuseunterseite sichtbar ist. Darin ist ein Saugmund 2 angeordnet, welcher eine in einer Arbeitsrichtung x vordere Saugmundkante 3 und eine in der Arbeitsrichtung x hintere Saugmundkante 4 begrenzt ist. Wie man einer vergleichenden Betrachtung mit Fig. 2 entnimmt erstrecken sich die vordere Saugmundkante 3 und die hintere Saugmundkante 4 in einer Horizontalebene H. Der Saugmund 2 verläuft im Wesentlichen horizontal in einer Querrichtung y, wobei die vordere Saugmundkante 3 und die hintere Saugmundkante 4 jeweils so konkav gekrümmt sind, dass der Saugmund 2 sich zu seinen seitlichen Randbereichen 5 hin verjüngt.In 1 an embodiment of a vacuum cleaner nozzle according to the invention is shown with a housing 1, the underside of which is visible. A suction mouth 2 is arranged therein, which is delimited by a suction mouth edge 3 at the front in a working direction x and a suction mouth edge 4 at the rear in the working direction x. How to do a comparative study with 2 The front suction mouth edge 3 and the rear suction mouth edge 4 extend in a horizontal plane H. The suction mouth 2 runs essentially horizontally in a transverse direction y, with the front suction mouth edge 3 and the rear suction mouth edge 4 each being so concavely curved that the suction mouth 2 tapers towards its lateral edge areas 5 .

Erfindungsgemäß schließt sich unmittelbar an die hintere Saugmundkante 4 eine Gleitschräge 6 an, die gegenüber der Horizontalebene H um einen Winkel α zwischen 1° und 5°, insbesondere zwischen 1,5° und 2,5°, geneigt ist. Zur Verdeutlichung ist der Winkel α in der Fig. 2 überproportional groß dargestellt. Entsprechend der erfindungsgemäßen Lehre erstreckt sich die Gleitschräge 6 ausgehend von der hinteren Saugmundkante 4 unterbrechungsfrei über eine Länge I von zumindest 30 mm. Im Ausführungsbeispiel reicht die Gleitschräge 6 in der Querrichtung y über eine Breite b welche ca. 75% der Breite B der hinteren Saugmundkante 4 entspricht. Wie man in dem Längsschnitt gemäß Fig. 2 erkennen kann, weist die Gleitschräge 6 eine lineare Steigung mit einem konstanten Steigungswinkel α auf.According to the invention, the rear suction mouth edge 4 is immediately followed by a sliding bevel 6 which is inclined relative to the horizontal plane H by an angle α of between 1° and 5°, in particular between 1.5° and 2.5°. To clarify, the angle α in the 2 shown disproportionately large. According to the teaching of the invention extends Glide bevel 6 starting from the rear suction mouth edge 4 without interruption over a length I of at least 30 mm. In the exemplary embodiment, the sliding bevel 6 extends in the transverse direction y over a width b which corresponds to approximately 75% of the width B of the rear edge 4 of the suction mouth. As shown in the longitudinal section 2 can see, the sliding bevel 6 has a linear slope with a constant slope angle α.

Der Figur entnimmt man ferner, dass sowohl in der Gleitschräge 6 als auch in einer vor der vorderen Saugmundkante 3 angeordneten Aufgleitschräge 7 ein Fadenheber eingelassen ist. Dessen Borsten aus Schrägborsten stehen im kräftefreien, entspannten Zustand geringfügig über die Oberfläche der Gleitschräge 6 bzw. der Aufgleitschräge 7 über. Sie können jedoch so weit komprimiert werden, dass sie hierzu flächenbündig sind. Die Aufgleitschräge ist um einen Aufgleitwinkel β von etwa 10° (überzeichnet dargestellt) gegenüber der Horizontalen geneigt.The figure also shows that a thread lifter is embedded both in the sliding bevel 6 and in a slide-on bevel 7 arranged in front of the front edge 3 of the suction mouth. Its bristles made of slanting bristles protrude slightly over the surface of the sliding slope 6 or the sliding slope 7 in the stress-free, relaxed state. However, they can be compressed to such an extent that they are flush with the surface. The slide-on slope is inclined by a slide-on angle β of approximately 10° (shown exaggerated) in relation to the horizontal.

In der gezeigten Ausführungsform ist ferner vor der Aufgleitschräge 7 ein Tragelement in Form eines Borstenstreifens 9 angeordnet, der zwischen eine eingezogenen Teppichbodenposition und einer ausgefahrenen Glattbodenposition hin- und her bewegt werden kann. Hinter der Gleitschräge 6 sind Tragrollen 10 angeordnet, deren unterster Punkt die Horizontalebene H berührt.In the embodiment shown, a support element in the form of a bristle strip 9 is also arranged in front of the slide-on slope 7, which can be moved back and forth between a retracted carpeted position and an extended smooth floor position. Support rollers 10 are arranged behind the sliding slope 6, the lowest point of which touches the horizontal plane H.

In Fig. 2 ist lediglich schematisch angedeutet, dass der im Gehäuseinnern liegende Saugkanal 11 mittels einer Ansaugöffnung über ein Ansaugstutzen 12 an ein Staubsauggebläse anschließbar ist.In 2 is indicated only schematically that the suction channel 11 located inside the housing can be connected to a vacuum cleaner fan by means of a suction opening via a suction nozzle 12 .

Claims (12)

  1. A vacuum cleaner nozzle comprising a housing (1) and a suction mouth (2), which is arranged on the underside of the housing and which is delimited by at least one front suction mouth edge (3) in the operating direction (x) and a rear suction mouth edge (4) in the operating direction (x), wherein the front suction mouth edge (3) and the rear suction mouth edge (4) extend in a horizontal plane (H), characterized in that a sliding bevel (6) which is inclined at an angle (α) of between 1.5° and 2.5°, in particular 2°, and which extends rearward, starting at the rear suction mouth edge (4) without interruption over a length (1) of at least 30 mm, connects directly to the rear suction mouth edge (4), that a slide-on bevel (7) is arranged in front of the front suction mouth edge (3), and that the slide-on bevel (7) is inclined at a slide-on angle (β) of between 7° and 10° with respect to the horizontal plane (H) .
  2. The vacuum cleaner nozzle according to one of claim 1, characterized in that the sliding bevel (6) extends without interruption from a length (1) of at least 35 mm, starting at the rear suction mouth edge (4).
  3. The vacuum cleaner nozzle according to one of claims 1 and 2, characterized in that the sliding bevel (6) extends in a transverse direction (y) over at least 75% of the width (B) of the rear suction mouth edge (4).
  4. The vacuum cleaner nozzle according to claim 3, characterized in that the sliding bevel (6) extends over the entire width (B) of the rear suction mouth edge (4).
  5. The vacuum cleaner nozzle according to one of claims 1 to 4, characterized in that the sliding bevel (6) has a linear slope in the operating direction (x) in each longitudinal section.
  6. The vacuum cleaner nozzle according to claim 5, characterized in that the sliding bevel (6) has the same linear slope in the operating direction (x) in each longitudinal section.
  7. The vacuum cleaner nozzle according to one of claims 1 to 6, characterized in that the rear suction mouth edge (4) is formed to be straight.
  8. The vacuum cleaner nozzle according to claim 6 and 7, characterized in that the sliding bevel (6) is a planar surface.
  9. The vacuum cleaner nozzle according to one of claims 1 to 8, characterized in that the rear suction mouth edge (4) is formed to be curved.
  10. The vacuum cleaner nozzle according to one of claims 1 to 9, characterized in that at least one thread lifter (8) is recessed into the sliding bevel (6).
  11. The vacuum cleaner nozzle according to one of claims 1 to 10, characterized in that support rollers (10) are arranged behind the sliding bevel (6) in the operating direction (x).
  12. The vacuum cleaner nozzle according to one of claims 1 to 11, characterized in that an adjustable support element (9), in particular a bristle strip, which can be moved between a first raised and a second lowered functional position, is arranged on the housing (1).
EP16180499.2A 2016-06-14 2016-07-21 Vacuum cleaner jet Active EP3257417B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710446039.XA CN107495898A (en) 2016-06-14 2017-06-14 Cleaner suction nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16174451 2016-06-14

Publications (4)

Publication Number Publication Date
EP3257417A2 EP3257417A2 (en) 2017-12-20
EP3257417A3 EP3257417A3 (en) 2017-12-27
EP3257417C0 EP3257417C0 (en) 2023-06-14
EP3257417B1 true EP3257417B1 (en) 2023-06-14

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EP (1) EP3257417B1 (en)
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3078877B1 (en) * 2018-03-14 2020-02-21 Seb S.A. VACUUM CLEANER WITH REAR SCRATCHING RIB
CN110313865A (en) * 2018-03-28 2019-10-11 天佑电器（苏州）有限公司 A kind of floor brush of dust collector, brush assemblies and dust catcher
EP3639715B1 (en) * 2018-10-15 2023-04-19 Wessel-Werk GmbH Floor nozzle for a vacuum cleaner
FR3094623B1 (en) * 2019-04-05 2022-12-16 Seb Sa Vacuum nozzle with rear scraping rib
CN111014097B (en) * 2019-12-09 2021-12-07 荣成荣盛橡胶机械有限公司 Dust collector for machine tool machining
DE102021118096A1 (en) * 2021-07-13 2023-01-19 Wessel-Werk Gmbh vacuum cleaner nozzle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304682C2 (en) * 1993-02-16 1996-01-25 Wessel Werk Gmbh Vacuum cleaner nozzle
FR2965165B1 (en) * 2010-09-24 2013-07-12 Seb Sa VACUUM CLEANER SCRATCH RULES
DE102012106570B4 (en) * 2012-07-19 2014-08-28 Wessel-Werk Gmbh Vacuum cleaner nozzle, in particular for household vacuum cleaners
EP2975993B1 (en) * 2013-03-21 2018-05-16 Aktiebolaget Electrolux A vacuum cleaner nozzle comprising a rear brush mechanism
DE102014112141B4 (en) * 2014-08-25 2018-04-26 Wessel-Werk Gmbh Suction nozzle for vacuum cleaner
DE102015101019A1 (en) * 2015-01-23 2016-07-28 Wessel-Werk Gmbh Plastic sliding sole for a vacuum cleaner nozzle

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EP3257417C0 (en) 2023-06-14
EP3257417A3 (en) 2017-12-27
CN107495898A (en) 2017-12-22
EP3257417A2 (en) 2017-12-20

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