EP3892177A1 - Vacuum cleaner jet - Google Patents

Vacuum cleaner jet Download PDF

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Publication number
EP3892177A1
EP3892177A1 EP20168232.5A EP20168232A EP3892177A1 EP 3892177 A1 EP3892177 A1 EP 3892177A1 EP 20168232 A EP20168232 A EP 20168232A EP 3892177 A1 EP3892177 A1 EP 3892177A1
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EP
European Patent Office
Prior art keywords
textile
vacuum cleaner
sealing
cleaner nozzle
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.)
Granted
Application number
EP20168232.5A
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German (de)
French (fr)
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EP3892177B1 (en
Inventor
Philipp Rath
Martin Zydek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wessel Werk GmbH
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Wessel Werk GmbH
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Publication date
Application filed by Wessel Werk GmbH filed Critical Wessel Werk GmbH
Priority to EP20168232.5A priority Critical patent/EP3892177B1/en
Publication of EP3892177A1 publication Critical patent/EP3892177A1/en
Application granted granted Critical
Publication of EP3892177B1 publication Critical patent/EP3892177B1/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
    • A47L9/0606—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads

Definitions

  • the invention relates to a vacuum cleaner nozzle with a housing and a suction mouth which is arranged on an underside of the housing and which extends in a transverse direction in relation to a transverse direction in the working direction.
  • Vacuum cleaner nozzles are used to shape and concentrate a suction air flow generated by a vacuum cleaner in the vicinity of a surface to be cleaned, in particular a floor surface.
  • the design of the vacuum cleaner nozzle has a particularly great influence on the cleaning result, which can be achieved when cleaning with a vacuum cleaner.
  • the geometrical-technical design of the vacuum cleaner nozzle has to take many different boundary conditions into account.
  • a seal between the body of the vacuum cleaner nozzle and the surface to be cleaned is important in order to generate sufficient negative pressures that are necessary for deep cleaning of a floor.
  • bristle strips are known in particular in the field of vacuum cleaner floor nozzles. These are linear strips with relatively coarse bristles throughout, which on the one hand serve to support a vacuum cleaner nozzle housing to a certain extent on the surface to be cleaned and, on the other hand, also contribute in a certain way to the sealing of the suction mouth from the ambient pressure.
  • the disadvantage here is that the sealing effect provided by the bristle strips is inadequate.
  • Continuous bristle strips also significantly impair the absorption properties of coarse dirt, since this is pushed in front of the bristle strip and thus cannot get into the area of influence of the suction mouth. Openings or interruptions arranged in the bristle strip can counteract this problem, but in turn lead to a reduced sealing effect.
  • elastic sealing strips made of a continuous plastic material are known - in particular so-called rubber lips. These have significantly better sealing properties because they can cling to the contour of the floor surface and are made of the same material without perforations and openings.
  • elastic sealing strips In order to ensure sufficient conformability and at the same time to ensure that the surface to be cleaned is protected, elastic sealing strips must, however, be designed to be relatively soft. They can therefore only be used insufficiently to support the vacuum cleaner nozzle housing. At the same time, there is also the problem that coarse dirt particles are pushed in front of the sealing lip and thus cannot be effectively absorbed.
  • a textile sealing arrangement is provided according to the invention, which is arranged behind the suction mouth in the working direction.
  • This comprises a multiplicity of textile sealing strips, a first sealing strip group comprising at least two of the textile sealing strips which are arranged on the left side on the longitudinal center plane of the housing.
  • a second sealing strip group comprises at least two of the textile sealing strips, which are arranged in good time in the longitudinal center plane of the housing.
  • the textile sealing strips of the first sealing strip group and the textile sealing strips of the second Sealing strip groups each have a longitudinal extent which is oriented obliquely with respect to the working direction.
  • the sealing arrangement has a plurality of textile sealing strips divided into at least two sealing strip groups. These are inclined with respect to the working direction and the transverse direction, so that they have a greater overall extent than in the case of a single sealing strip which is continuous in the transverse direction. As a result, both a greater sealing effect and a greater supporting force can be generated with the sealing strips.
  • the subdivision into spaced-apart sealing strips enables the formation of passages for coarse dirt particles.
  • the inclined position can also be used so that a directed guiding or collecting effect can be achieved through the interaction of the individual inclined sealing strips during a forward or backward stroke in or against the working direction.
  • the longitudinal extension of the sealing strips preferably forms an angle between 30 ° and 80 ° in each case with the working direction.
  • Each of the angles is preferably between 45 ° and 75 °, in particular approximately 60 °.
  • the textile sealing strips preferably each have a length of at least 2 cm, preferably 5 to 8 cm, measured along their longitudinal direction.
  • the textile sealing elements preferably have a width of less than 10 mm, preferably between 3 and 6 mm. In this size range, a sealing effect that is at least equivalent to a rubber lip can already have a special soft nestling properties can be achieved.
  • a ratio of length to width of at least 1:10, particularly preferably at least 1:15, is provided.
  • the sealing strips of each of the two sealing strip groups are each directly adjacent to one another, i.e. arranged without further sealing strips or other sealing elements arranged in between.
  • One or more additional sealing elements in particular a sealing strip running in the transverse direction, can be arranged between the first sealing strip group and the second sealing strip group.
  • the textile sealing strips of the first sealing strip group and the textile sealing strips of the second sealing strip group are arranged symmetrically with respect to the longitudinal center plane.
  • a uniform cleaning result can be achieved over the entire width of the vacuum cleaner nozzle as well as a congruent behavior with a forward stroke or with a backward stroke on both halves of the vacuum cleaner nozzle.
  • support elements protrude from the underside of the housing, which span a support plane.
  • the textile sealing strips protrude at least up to the contact level.
  • the support elements can be provided in particular by skids, rollers and / or more dimensionally stable bristle strips.
  • the textile sealing strips can be made particularly soft.
  • the invention is characterized in particular by the knowledge that with a textile Sealing strip a sealing effect can be generated which is equivalent to or even superior to a sealing lip.
  • particularly soft textile sealing elements are characterized by a particularly good nestling behavior.
  • fibers of a soft textile sealing strip - unlike sealing lips - can also penetrate into fine cracks and gaps in order to significantly improve the suction result on jointed hard floors.
  • the textile sealing strips run in the working direction towards the longitudinal center plane.
  • the inclined sealing strips have an additional collection function during a backward stroke, which concentrate coarse dirt upstream towards the longitudinal center plane - and thus towards the mouth of the suction line.
  • the alignment of the textile sealing strips is less important, since coarse dirt particles are sucked off below the suction mouth and therefore cannot collect in front of the textile sealing strips.
  • two adjacently arranged textile sealing strips overlap in the transverse direction.
  • the extension of at least one textile sealing strip thus overlaps with the transverse extension of at least one adjacent textile sealing strip. This is possible in particular through the inclination according to the invention.
  • the overlap improves the sealing effect as well as the complete coverage of the work area during a forward or backward stroke.
  • the overlap in the transverse direction is preferably at least 5%, in particular 10% to 20% of the extent of one of the overlapping sealing strips in the transverse direction.
  • the sealing arrangement preferably has a longitudinally parallel one at each end in the transverse direction - i. H. aligned in the working direction - textile edge strips.
  • the textile edge strip forms a support element which can exert at least supplementary load-bearing forces when moving in the working direction.
  • a particularly strong seal on the sides is ensured so that the sowing effect is concentrated on the area in front of and behind the suction mouth. This simplifies the thorough collection of dirt particles - especially coarse dirt particles.
  • the edge strips are preferably each arranged completely behind the suction mouth. They thus serve in particular to channel the suction air stream flowing in from behind.
  • the textile sealing strips of the first sealing strip group and the textile sealing strips of the second sealing strip group are each aligned parallel to one another. This enables the formation of a uniform supporting and sealing effect with cleaning properties that are comparable at all points.
  • the textile sealing strips have a fiber pile made of textile fibers protruding from the underside of the housing.
  • One or more textile fibers can be embedded in the carrier at one end.
  • one or more fibers can protrude downwards with both ends and be fastened to the carrier approximately in the middle.
  • the textile fibers are particularly preferably straight - i. H. in particular not laid in loops and / or crimped - formed.
  • the textile fibers can be arranged particularly densely in order to achieve a good fluidic seal.
  • the textile fibers preferably have a fineness of less than 5 dtex, in particular less than 4 dtex. Fibers with a fineness between 0.5 dtex and 2 dtex are very particularly preferably used.
  • the textile fibers are preferably formed from one or more plastics. Some of the textile fibers or all of the textile fibers are particularly preferably formed from a material selected from the group consisting of polyester, nylon, acrylic or cellulose.
  • the textile fibers are arranged particularly densely in the fiber web.
  • the fiber pile preferably has a fiber density of at least 200 textile fibers per square millimeter, particularly preferably at least 400 textile fibers per square millimeter, in particular a fiber density between 500 and 1000 textile fibers per square millimeter.
  • the fiber web of at least one textile sealing strip preferably has a covering that is homogeneous over the entire surface.
  • the local fiber density is therefore the same in the entire surface area of the textile sealing strip - within the scope of the measurement and production accuracy.
  • the homogeneous sealing strips are free of tufts.
  • the textile sealing strips each have a carrier strip in which the fiber web is embedded.
  • the carrier strip is arranged on the vacuum cleaner nozzle in such a way that it does not protrude from the underside of the housing.
  • the carrier strip is thus arranged in a protected manner and cannot be damaged by contact with the ground.
  • recesses or recesses into which the carrier strip can be sunk are expediently formed on the underside of the vacuum cleaner nozzle housing.
  • the fiber web is preferably embedded in the carrier strip by gluing, meshing - in particular in a woven, knitted or knitted carrier strip - and / or welding.
  • the vertical height at which the individual textile fibers are mechanically immovable with respect to the carrier strip due to the embedding is also referred to as the clamping height of the fiber web. Most preferably, the extends The clamping height also does not go beyond the underside of the vacuum cleaner nozzle. This means that the textile fibers of the batt are fully movable below the vacuum cleaner nozzle.
  • At least one textile sealing strip is detachably attached to the housing.
  • the textile sealing elements can be expected to have a long service life. Nevertheless, it is possible that these lose their soft feel and sealing properties in the event of incorrect use due to soiling, sticking, mechanical damage and / or thermal welding.
  • damaged or otherwise unusable sealing elements - preferably without tools - can be detached from the vacuum cleaner nozzle and replaced with replacement parts. In this way, a consistently good cleaning result can be maintained over the entire service life of the vacuum cleaner nozzle.
  • the textile sealing elements in the context of the invention should be designed in such a way that they can be easily deformed - especially in the case of a point load. As a result, they can be bent particularly easily against the direction of movement in order to bypass an obstacle.
  • a particularly fine fiber design enables a particularly flat "folding away" of the individual fibers within the textile structure.
  • the sealing elements are preferably designed in such a way that they can also at least partially take on vertical support loads.
  • the textile sealing arrangement is designed in such a way that it is not more than half the opposite when subjected to a load with half the weight of the housing an uncompressed - force-free - state is compressed. Therefore, it can at least provide significant parts of the necessary load-bearing capacity.
  • the vacuum cleaner nozzle according to the invention which has a housing 1 which extends in a working direction x, a transverse direction y and a vertical direction z.
  • the housing 1 has an approximately rectangular shape, the width B measured in the transverse direction y being approximately 1.5 to 2 times the length L measured in the working direction x.
  • a suction connection piece 2 for connecting the vacuum cleaner nozzle to a suction air duct is connected to the rear end of the housing 1 in the working direction x.
  • the suction connection piece 2 has an angled pipe connection 2a which can be pivoted relative to the housing 1 both about a pivot axis s 1 running in the transverse direction y and about a longitudinal axis s 2.
  • the angled pipe connection 2a is connected to the housing 1 via a corrugated hose 2b.
  • a suction mouth 4 is arranged on the underside 3 of the housing 1, which suction mouth 4 extends in the transverse direction y over almost the entire width B of the housing 1.
  • the suction mouth 4 forms an opening on the underside of the housing 1 and opens into a suction space which is fluidically connected to the suction connection piece 2.
  • a brush roller 4a that can be driven in rotation is provided within the suction mouth 4.
  • a textile sealing arrangement 5 which comprises a multiplicity of textile sealing strips 6, is arranged behind the suction mouth 4 in the working direction x.
  • the textile sealing arrangement 5 has at least one first sealing strip group I with at least two of the textile sealing strips 6, which are arranged on the left side of a longitudinal center plane 7 of the housing 1.
  • a second sealing strip group II comprises at least two of the textile sealing strips 6, which are arranged on the right-hand side of the longitudinal center plane 7 of the housing 1.
  • the textile sealing strips 6 of the first sealing strip group I and the second sealing strip group II each have a longitudinal extension 8 which is oriented obliquely with respect to the working direction x by an angle ⁇ .
  • the textile sealing strips 6 have a sealing strip width b of 5 mm and a sealing strip length I of 35 mm.
  • the textile sealing strips 6 of the first sealing strip group I and the textile sealing strips 6 of the second sealing strip group II are arranged symmetrically with respect to the longitudinal center plane 7.
  • rollers 9 are arranged, which act as support elements on hard floors.
  • the axis of rotation is aligned rear castors 9 with the pivot axis s 1 How to look at the side view Fig. 3 removes, the rollers 9 span tangentially a contact plane 10, with respect to which the textile sealing strips 6 protrude slightly in the vertical direction z downwards.
  • the textile sealing strips 6 run towards the longitudinal center plane 7 in the working direction x.
  • a cleaning movement against the working direction x - a collecting effect is achieved which concentrates any coarse dirt particles in the central area of the suction mouth 4, where the suction air flow is strongest.
  • the textile sealing strips 6 of the first sealing strip group I and the second sealing strip group II are arranged in such a way that they at least partially overlap in the transverse direction y. In the transverse direction y, the overlap u is approximately 10% of the extension v of a textile sealing strip 6.
  • the sealing arrangement has a longitudinally parallel textile edge strip 11 at each end in the transverse direction y. This is identical in its dimensions and material properties to the majority of the textile sealing strips 6. Furthermore, the edge strips 11 are arranged completely behind the suction mouth 4. The textile sealing strips 6 of the first sealing strip group and the textile sealing strips 6 of the second sealing strip group II are each aligned parallel to one another.
  • the textile sealing strips 6 are a fiber pile made of textile fibers protruding from the underside 3 of the housing 1 exhibit.
  • the textile fibers are straight and have a fineness of about 1 dtex.
  • the clothing of the fiber web is formed homogeneously over the entire surface of the sealing strips 6 and the edge strips 11 and has a fiber density of at least 400 textile fibers per square millimeter.
  • the textile sealing strips 6 and the edge strips 11 are each formed with a carrier strip in which the fiber web is embedded. The carrier strip does not protrude from the underside 3 of the housing 1, so that this cannot be seen in the figures.
  • the textile sealing strips 6 and the edge strips 11 are detachably attached to the housing 1 and can be replaced by a user without tools.

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

Abstract

Die Erfindung betrifft eine Staubsaugerdüse mit einem Gehäuse (1) und einem an einer Unterseite (3) des Gehäuses (1) angeordneten Saugmund (4). Dieser erstreckt sich in einer quer zu einer Arbeitsrichtung (x) stehenden Querrichtung. Erfindungsgemäß ist in der Arbeitsrichtung (x) hinter dem Saugmund (4) eine textile Dichtanordnung (5) angeordnet, welche eine Vielzahl von textilen Dichtstreifen (6) umfasst. Eine erste Dichtstreifengruppe (I) umfasst zumindest zwei der textilen Dichtstreifen (6), welche linksseitig einer Längsmittelebene (7) des Gehäuses (1) angeordnet sind. Eine zweite Dichtstreifengruppe (II) umfasst zumindest zwei der textilen Dichtstreifen (6), welche rechtsseitig der Längsmittelebene (7) des Gehäuses (1) angeordnet sind. Die textilen Dichtstreifen (6) der ersten Dichtstreifengruppe (I) und der zweiten Dichtstreifengruppe (II) weisen jeweils eine Längserstreckung (8) auf, welche gegenüber der Arbeitsrichtung (x) schräg ausgerichtet ist.

Figure imgaf001
The invention relates to a vacuum cleaner nozzle with a housing (1) and a suction mouth (4) arranged on an underside (3) of the housing (1). This extends in a transverse direction that is transverse to a working direction (x). According to the invention, a textile sealing arrangement (5), which comprises a multiplicity of textile sealing strips (6), is arranged in the working direction (x) behind the suction mouth (4). A first sealing strip group (I) comprises at least two of the textile sealing strips (6) which are arranged on the left side of a longitudinal center plane (7) of the housing (1). A second sealing strip group (II) comprises at least two of the textile sealing strips (6) which are arranged on the right-hand side of the longitudinal center plane (7) of the housing (1). The textile sealing strips (6) of the first sealing strip group (I) and the second sealing strip group (II) each have a longitudinal extension (8) which is oriented obliquely with respect to the working direction (x).
Figure imgaf001

Description

Die Erfindung betrifft eine Staubsaugerdüse mit einem Gehäuse und einem an einer Unterseite des Gehäuses angeordneten Saugmund, welcher sich in einer quer zu einer in Arbeitsrichtung stehenden Querrichtung erstreckt.The invention relates to a vacuum cleaner nozzle with a housing and a suction mouth which is arranged on an underside of the housing and which extends in a transverse direction in relation to a transverse direction in the working direction.

Staubsaugerdüsen dienen der Formung und Konzentration eines von einem Staubsauger erzeugten Saugluftstromes in der Nähe einer zu reinigenden Oberfläche, insbesondere einer Bodenfläche. Dabei hat die Ausgestaltung der Staubsaugerdüse einen besonders großen Einfluss auf das Reinigungsergebnis, welches bei der Reinigung mit einem Staubsauger erzielt werden kann.Vacuum cleaner nozzles are used to shape and concentrate a suction air flow generated by a vacuum cleaner in the vicinity of a surface to be cleaned, in particular a floor surface. The design of the vacuum cleaner nozzle has a particularly great influence on the cleaning result, which can be achieved when cleaning with a vacuum cleaner.

Die geometrisch-technische Ausgestaltung der Staubsaugerdüse muss dabei vielen verschiedenen Randbedingungen Rechnung tragen. So gibt es spezielle Staubsaugerdüsen, welche insbesondere zur Fußbodenreinigung vorgesehen sind - sogenannte Staubsaugerbodendüsen. Insbesondere bei diesem Typus ist eine Abdichtung zwischen dem Körper der Staubsaugerdüse und der zu reinigenden Oberfläche wichtig, um ausreichende Unterdrücke zu erzeugen, die zur Tiefenreinigung eines Bodens notwendig sind.The geometrical-technical design of the vacuum cleaner nozzle has to take many different boundary conditions into account. There are special vacuum cleaner nozzles, which are particularly intended for cleaning floors - so-called vacuum cleaner floor nozzles. In this type in particular, a seal between the body of the vacuum cleaner nozzle and the surface to be cleaned is important in order to generate sufficient negative pressures that are necessary for deep cleaning of a floor.

Insbesondere die Reinigung von gefugten Hartböden - also luftundurchlässigen Bodenoberflächen mit darin angeordneten Spalten und Ritzen - haben sich in der Vergangenheit immer wieder als schwierig herausgestellt. Um auch innerhalb der Fugen eingebettete Schmutzpartikel lösen und abführen zu können ist die Erzeugung von besonders großen Unterdrücken notwendig. Dies wird dadurch zusätzlich erschwert, dass aufgrund von geltenden Umweltbestimmungen die physikalische Leistung der Staubsauger in den vergangenen Jahren immer weiter abgenommen hat. Es ist daher nicht möglich, den benötigten Unterdruck allein durch Steigerung der angewandten Staubsaugerleistung zu erzeugen, sondern dieser muss ganz wesentlich durch geeignete Abdichtungsmaßnahmen an der Staubsaugerdüse erzielt werden.In particular, the cleaning of grooved hard floors - i.e. air-impermeable floor surfaces with gaps and cracks arranged in them - have repeatedly proven to be difficult in the past. In order to be able to loosen and remove dirt particles embedded within the joints, it is necessary to generate particularly high negative pressures. This is made even more difficult due to the fact that applicable Environmental regulations the physical performance of vacuum cleaners has continued to decline in recent years. It is therefore not possible to generate the required negative pressure solely by increasing the vacuum cleaner power used;

Insbesondere auf dem Gebiet der Staubsaugerbodendüsen ist der Einsatz von sogenannten Borstenleisten bekannt. Hierbei handelt es sich um lineare, durchgängig mit relativ groben Borsten besteckte Leisten, welche einerseits einer einigermaßen schonenden Abstützung eines Staubsaugerdüsengehäuses auf der zu reinigenden Oberfläche dienen und andererseits auch in gewisser Weise zur Abdichtung des Saugmundes gegenüber dem Umgebungsdruck beitragen. Hierbei ist jedoch von Nachteil, dass die von Borstenleisten bereitgestellte Dichtwirkung nur unzureichend ausgebildet ist. Auch verschlechtern durchgängige Borstenleisten maßgeblich die Aufnahmeeigenschaften von Grobschmutz, da dieser vor der Borstenleiste hergeschoben wird und somit nicht in den Einflussbereich des Saugmundes gelangen kann. In der Borstenleiste angeordnete Öffnungen oder Unterbrechungen können diesem Problem begegnen, führen jedoch wiederum zu einer verminderten Dichtwirkung.The use of so-called bristle strips is known in particular in the field of vacuum cleaner floor nozzles. These are linear strips with relatively coarse bristles throughout, which on the one hand serve to support a vacuum cleaner nozzle housing to a certain extent on the surface to be cleaned and, on the other hand, also contribute in a certain way to the sealing of the suction mouth from the ambient pressure. However, the disadvantage here is that the sealing effect provided by the bristle strips is inadequate. Continuous bristle strips also significantly impair the absorption properties of coarse dirt, since this is pushed in front of the bristle strip and thus cannot get into the area of influence of the suction mouth. Openings or interruptions arranged in the bristle strip can counteract this problem, but in turn lead to a reduced sealing effect.

Als alternative Lösung sind elastische Dichtstreifen aus einem durchgängigen Kunststoffmaterial bekannt - insbesondere sogenannte Gummilippen. Diese haben deutlich bessere Dichteigenschaften, da sie sich an die Kontur der Bodenfläche anschmiegen können und materialeinheitlich ohne Durchbrüche und Öffnungen ausgebildet sind.As an alternative solution, elastic sealing strips made of a continuous plastic material are known - in particular so-called rubber lips. These have significantly better sealing properties because they can cling to the contour of the floor surface and are made of the same material without perforations and openings.

Um eine ausreichende Anschmiegsamkeit zu gewährleisten und gleichzeitig eine Schonung der zu reinigenden Oberfläche zu gewährleisten, müssen elastische Dichtleisten jedoch verhältnismäßig weich ausgebildet werden. Sie können somit nur unzureichend zur Abstützung des Staubsaugerdüsengehäuses verwendet werden. Gleichzeitig besteht ebenfalls die Problematik, dass Grobschmutzpartikel vor der Dichtlippe hergeschoben werden und somit nicht wirksam aufgenommen werden können.In order to ensure sufficient conformability and at the same time to ensure that the surface to be cleaned is protected, elastic sealing strips must, however, be designed to be relatively soft. They can therefore only be used insufficiently to support the vacuum cleaner nozzle housing. At the same time, there is also the problem that coarse dirt particles are pushed in front of the sealing lip and thus cannot be effectively absorbed.

In der Praxis sind daher bisher material- und konstruktionsaufwendige Kombinationslösungen erforderlich, um ausreichende Tragkräfte mit einer guten Abdichtung und einer ausreichenden Grobschmutzaufnahme zu erzielen. Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine kostengünstige Lösung zur Erreichung dieser Ziele anzugeben. Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Staubsaugerdüse nach Patentanspruch 1. Bevorzugte Ausgestaltungen sind in den abhängigen Unteransprüchen angegeben.In practice, therefore, combination solutions that are costly in terms of material and construction have hitherto been required in order to achieve sufficient load-bearing capacities with a good seal and sufficient absorption of coarse dirt. Against this background, the invention is based on the object of specifying an inexpensive solution for achieving these goals. The subject of the invention and the solution to this problem is a vacuum cleaner nozzle according to patent claim 1. Preferred embodiments are given in the dependent claims.

Ausgehend von der gattungsgemäßen Staubsaugerdüse ist erfindungsgemäß eine textile Dichtanordnung vorgesehen, welche in der Arbeitsrichtung hinter dem Saugmund angeordnet ist. Diese umfasst eine Vielzahl von textilen Dichtstreifen, wobei eine erste Dichtstreifengruppe zumindest zwei der textilen Dichtstreifen umfasst, welche linksseitig an der Längsmittelebene des Gehäuses angeordnet sind. Eine zweite Dichtstreifengruppe umfasst zumindest zwei der textilen Dichtstreifen, welche rechtzeitig der Längsmittelebene des Gehäuses angeordnet sind. Die textilen Dichtstreifen der ersten Dichtstreifengruppe und die textilen Dichtstreifen der zweiten Dichtstreifengruppe weisen jeweils eine Längserstreckung auf, welche gegenüber der Arbeitsrichtung schräg ausgerichtet ist.Based on the generic vacuum cleaner nozzle, a textile sealing arrangement is provided according to the invention, which is arranged behind the suction mouth in the working direction. This comprises a multiplicity of textile sealing strips, a first sealing strip group comprising at least two of the textile sealing strips which are arranged on the left side on the longitudinal center plane of the housing. A second sealing strip group comprises at least two of the textile sealing strips, which are arranged in good time in the longitudinal center plane of the housing. The textile sealing strips of the first sealing strip group and the textile sealing strips of the second Sealing strip groups each have a longitudinal extent which is oriented obliquely with respect to the working direction.

Gemäß der Erfindung weist die Dichtanordnung eine in zumindest zwei Dichtstreifengruppen gegliederte Mehrzahl von textilen Dichtstreifen auf. Diese sind gegenüber der Arbeitsrichtung und der Querrichtung geneigt, sodass sie eine größere Gesamterstreckung als bei einem einzigen in der Querrichtung durchgängigen Dichtstreifen aufweisen. Infolgedessen kann mit den Dichtstreifen sowohl eine größere Dichtwirkung als auch eine größere Stützkraft erzeugt werden. Gleichzeitig ermöglicht die Untergliederung in voneinander beabstandete Dichtstreifen die Ausbildung von Durchlässen für Grobschmutzpartikel. Die Schrägstellung kann zusätzlich dazu genutzt werden, dass bei einem Vorwärts- bzw. Rückwärtshub in bzw. entgegen der Arbeitsrichtung eine gerichtete Leit- bzw. Sammelwirkung durch das Zusammenspiel der einzelnen schräggestellten Dichtstreifen erzielt werden kann.According to the invention, the sealing arrangement has a plurality of textile sealing strips divided into at least two sealing strip groups. These are inclined with respect to the working direction and the transverse direction, so that they have a greater overall extent than in the case of a single sealing strip which is continuous in the transverse direction. As a result, both a greater sealing effect and a greater supporting force can be generated with the sealing strips. At the same time, the subdivision into spaced-apart sealing strips enables the formation of passages for coarse dirt particles. The inclined position can also be used so that a directed guiding or collecting effect can be achieved through the interaction of the individual inclined sealing strips during a forward or backward stroke in or against the working direction.

Vorzugsweise schließt die Längserstreckung der Dichtstreifen mit der Arbeitsrichtung jeweils einen Winkel zwischen 30° und 80° ein. Bevorzugt beträgt jeder der Winkel zwischen 45° und 75°, insbesondere etwa 60°.The longitudinal extension of the sealing strips preferably forms an angle between 30 ° and 80 ° in each case with the working direction. Each of the angles is preferably between 45 ° and 75 °, in particular approximately 60 °.

Vorzugsweise weisen die textilen Dichtstreifen jeweils eine entlang ihrer Längserstreckungsrichtung gemessene Länge von zumindest 2 cm, vorzugsweise 5 bis 8 cm, auf. Senkrecht zur Längserstreckungsrichtung weisen die textilen Dichtelemente vorzugsweise eine Breite von weniger als 10 mm, vorzugsweise zwischen 3 und 6 mm auf. In diesem Größenbereich kann bereits eine einer Gummilippe zumindest gleichwertige Dichtwirkung mit besonders weichen Anschmiegungsseigenschaften erreicht werden. Zur Beibehaltung dieser Dichtlippen-Charakteristik ist ein Verhältnis der Länge zur Breite von zumindest 1 : 10, besonders bevorzugt zumindest 1 : 15 vorgesehen.The textile sealing strips preferably each have a length of at least 2 cm, preferably 5 to 8 cm, measured along their longitudinal direction. At right angles to the direction of longitudinal extension, the textile sealing elements preferably have a width of less than 10 mm, preferably between 3 and 6 mm. In this size range, a sealing effect that is at least equivalent to a rubber lip can already have a special soft nestling properties can be achieved. To maintain this sealing lip characteristic, a ratio of length to width of at least 1:10, particularly preferably at least 1:15, is provided.

Besonders bevorzugt sind die Dichtstreifen jeder der beiden Dichtstreifengruppen jeweils zueinander unmittelbar benachbart, d.h. ohne dazwischen angeordnete weitere Dichtstreifen oder andere Dichtelemente angeordnet. Zwischen der ersten Dichtstreifengruppe und der zweiten Dichtstreifengruppe können ein oder mehrere zusätzliche Dichtelemente, insbesondere ein in der Querrichtung verlaufender Dichtstreifen, angeordnet sein.Particularly preferably, the sealing strips of each of the two sealing strip groups are each directly adjacent to one another, i.e. arranged without further sealing strips or other sealing elements arranged in between. One or more additional sealing elements, in particular a sealing strip running in the transverse direction, can be arranged between the first sealing strip group and the second sealing strip group.

Gemäß einer bevorzugten Ausgestaltung sind die textilen Dichtstreifen der ersten Dichtstreifengruppe und die textilen Dichtstreifen der zweiten Dichtstreifengruppe symmetrisch bezüglich der Längsmittelebene angeordnet. In dieser Ausführungsvariante kann ein gleichmäßiges Reinigungsergebnis über die gesamte Breite der Staubsaugerdüse sowie ein kongruentes Verhalten bei einem Vorwärtshub bzw. bei einem Rückwärtshub auf beiden Hälften der Staubsaugerdüse erzielt werden.According to a preferred embodiment, the textile sealing strips of the first sealing strip group and the textile sealing strips of the second sealing strip group are arranged symmetrically with respect to the longitudinal center plane. In this embodiment variant, a uniform cleaning result can be achieved over the entire width of the vacuum cleaner nozzle as well as a congruent behavior with a forward stroke or with a backward stroke on both halves of the vacuum cleaner nozzle.

Zweckmäßigerweise stehen an der Unterseite des Gehäuses Stützelemente hervor, welche eine Aufstandsebene aufspannen. Die textilen Dichtstreifen stehen zumindest bis zu der Aufstandsebene vor. Die Stützelemente können insbesondere durch Gleitkufen, Laufrollen und/oder formstabilere Borstenleisten bereitgestellt werden. In dieser Ausführungsvariante können die textilen Dichtstreifen besonders weich ausgeführt werden. Hierbei zeichnet sich die Erfindung insbesondere durch die Erkenntnis aus, dass auch mit einem textilen Dichtstreifen eine Dichtwirkung erzeugt werden kann, welche einer Dichtlippe gleichwertig oder sogar überlegen ist. Gleichzeitig zeichnen sich besonders weiche textile Dichtelemente durch ein besonders gutes Anschmiegeverhalten aus. Insbesondere können Fasern eines weichen textilen Dichtstreifens - anders als Dichtlippen - auch in feine Ritzen und Spalten eindringen, um so das Saugergebnis auf gefugten Hartböden signifikant zu verbessern.Expediently, support elements protrude from the underside of the housing, which span a support plane. The textile sealing strips protrude at least up to the contact level. The support elements can be provided in particular by skids, rollers and / or more dimensionally stable bristle strips. In this variant, the textile sealing strips can be made particularly soft. Here, the invention is characterized in particular by the knowledge that with a textile Sealing strip a sealing effect can be generated which is equivalent to or even superior to a sealing lip. At the same time, particularly soft textile sealing elements are characterized by a particularly good nestling behavior. In particular, fibers of a soft textile sealing strip - unlike sealing lips - can also penetrate into fine cracks and gaps in order to significantly improve the suction result on jointed hard floors.

Gemäß einer bevorzugten Variante verlaufen die textilen Dichtstreifen in der Arbeitsrichtung zu der Längsmittelebene hin. Hierdurch haben die schräggestellten Dichtstreifen bei einem Rückwärtshub eine zusätzliche Sammlungsfunktion, welche vorgelagerten Grobschmutz zur Längsmittelebene - und damit zur Mündung der Saugleitung - hin konzentrieren. Bei einem Vorwärtshub kommt es auf die Ausrichtung der textilen Dichtstreifen weniger an, da Grobschmutzpartikel unterhalb des Saugmundes abgesaugt werden und sich daher nicht vor den textilen Dichtstreifen ansammeln können.According to a preferred variant, the textile sealing strips run in the working direction towards the longitudinal center plane. As a result, the inclined sealing strips have an additional collection function during a backward stroke, which concentrate coarse dirt upstream towards the longitudinal center plane - and thus towards the mouth of the suction line. During a forward stroke, the alignment of the textile sealing strips is less important, since coarse dirt particles are sucked off below the suction mouth and therefore cannot collect in front of the textile sealing strips.

Besonders bevorzugt ist vorgesehen, dass sich zwei benachbart angeordnete textile Dichtstreifen in der Querrichtung überdecken. Die Erstreckung zumindest eines textilen Dichtstreifens überschneidet sich also mit der Quererstreckung zumindest eines benachbart angeordneten textilen Dichtstreifens. Dies ist insbesondere durch die erfindungsgemäße Schrägstellung möglich. Die Überdeckung verbessert die Dichtwirkung sowie die lückenlose Abdeckung des Arbeitsbereichs bei einem Vorwärts- oder Rückwärtshub. Vorzugsweise beträgt die Überdeckung in der Querrichtung zumindest 5%, insbesondere 10% bis 20% der Erstreckung eines der Überlappenden Dichtstreifen in der Querrichtung.It is particularly preferred that two adjacently arranged textile sealing strips overlap in the transverse direction. The extension of at least one textile sealing strip thus overlaps with the transverse extension of at least one adjacent textile sealing strip. This is possible in particular through the inclination according to the invention. The overlap improves the sealing effect as well as the complete coverage of the work area during a forward or backward stroke. The overlap in the transverse direction is preferably at least 5%, in particular 10% to 20% of the extent of one of the overlapping sealing strips in the transverse direction.

Vorzugsweise weist die Dichtanordnung in der Querrichtung endseitig jeweils einen längsparallelen - d. h. in der Arbeitsrichtung ausgerichteten - textilen Randstreifen auf. Der textile Randstreifen bildet einerseits trotz des weichen Faseraufbaus ein Abstützelement, welches bei einer Bewegung in der Arbeitsrichtung zumindest ergänzende Tragkräfte ausüben kann. Gleichzeitig wird eine besonders starke Abdichtung zu den Seiten hin gewährleistet, sodass sich die Sauwirkung auf den Bereich vor und hinter dem Saugmund konzentriert. Dies vereinfacht eine gründliche Aufnahme von Schmutzpartikeln - insbesondere von Grobschmutzanteilen.The sealing arrangement preferably has a longitudinally parallel one at each end in the transverse direction - i. H. aligned in the working direction - textile edge strips. On the one hand, despite the soft fiber structure, the textile edge strip forms a support element which can exert at least supplementary load-bearing forces when moving in the working direction. At the same time, a particularly strong seal on the sides is ensured so that the sowing effect is concentrated on the area in front of and behind the suction mouth. This simplifies the thorough collection of dirt particles - especially coarse dirt particles.

Vorzugsweise sind die Randstreifen jeweils vollständig hinter dem Saugmund angeordnet. Sie dienen somit insbesondere der Kanalisierung des von hinten anströmenden Saugluftstromes.The edge strips are preferably each arranged completely behind the suction mouth. They thus serve in particular to channel the suction air stream flowing in from behind.

Gemäß einer besonders bevorzugten Ausgestaltung sind die textilen Dichtstreifen der ersten Dichtstreifengruppe und die textilen Dichtstreifen der zweiten Dichtstreifengruppe jeweils zueinander parallel ausgerichtet. Dies ermöglicht die Ausbildung einer gleichmäßigen Stütz- und Dichtwirkung mit an allen Stellen vergleichbaren Reinigungseigenschaften.According to a particularly preferred embodiment, the textile sealing strips of the first sealing strip group and the textile sealing strips of the second sealing strip group are each aligned parallel to one another. This enables the formation of a uniform supporting and sealing effect with cleaning properties that are comparable at all points.

Insbesondere weisen die textilen Dichtstreifen einen an der Unterseite des Gehäuses vorstehenden Faserflor aus Textilfasern auf. Hierbei handelt es sich um eine Vielzahl von - im unbelasteten Zustand - im Wesentlichen senkrecht zu der Unterseite der Staubsaugerdüse ausgerichtete Textilfasern. Diese sind - insbesondere mit einem (oberen) Ende - in einem zugeordneten Träger gehalten, welcher an dem Gehäuse der Staubsaugerdüse befestigt ist. Zumindest ein Ende der Faser steht frei über die Unterseite der Staubsaugerdüse nach unten vor.In particular, the textile sealing strips have a fiber pile made of textile fibers protruding from the underside of the housing. This involves a large number of textile fibers — in the unloaded state — essentially perpendicular to the underside of the vacuum cleaner nozzle. These are - in particular with one (upper) end - held in an associated carrier which is attached to the housing of the vacuum cleaner nozzle. At least one end of the fiber protrudes downwards freely over the underside of the vacuum cleaner nozzle.

Ein oder mehrere Textilfasern können mit einem Ende in dem Träger eingebettet sein. Alternativ oder zusätzlich können ein oder mehrere Fasern mit beiden Enden nach unten vorstehen und - in etwa mittig - an dem Träger befestigt sein.One or more textile fibers can be embedded in the carrier at one end. As an alternative or in addition, one or more fibers can protrude downwards with both ends and be fastened to the carrier approximately in the middle.

Besonders bevorzugt sind die Textilfasern gerade - d. h. insbesondere nicht zu Schlaufen gelegt und/oder gekräuselt - ausgebildet. In dieser Konfiguration lassen sich die Textilfasern besonders dicht anordnen, um eine gute strömungstechnische Abdichtung zu erzielen.The textile fibers are particularly preferably straight - i. H. in particular not laid in loops and / or crimped - formed. In this configuration, the textile fibers can be arranged particularly densely in order to achieve a good fluidic seal.

Im Rahmen der Erfindung sind insbesondere besonders feine Fasern vorgesehen. Vorzugsweise weisen die Textilfasern eine Feinheit von weniger als 5 dtex, insbesondere weniger als 4 dtex, auf. Ganz besonders bevorzugt werden Fasern mit einer Feinheit zwischen 0,5 dtex und 2 dtex verwendet.Particularly fine fibers are provided in the context of the invention. The textile fibers preferably have a fineness of less than 5 dtex, in particular less than 4 dtex. Fibers with a fineness between 0.5 dtex and 2 dtex are very particularly preferably used.

Vorzugsweise sind die Textilfasern aus einem oder mehreren Kunststoffen gebildet. Besonders bevorzugt sind dabei ein Teil der Textilfasern oder sämtliche Textilfasern aus einem Material, ausgewählt aus der Gruppe Polyester, Nylon, Acryl oder Zellulose, gebildet.The textile fibers are preferably formed from one or more plastics. Some of the textile fibers or all of the textile fibers are particularly preferably formed from a material selected from the group consisting of polyester, nylon, acrylic or cellulose.

Um eine besonders gute Dichtwirkung zu erreichen, sind die Textilfasern besonders dicht in dem Faserflor angeordnet. Vorzugsweise weist der Faserflor eine Faserdichte von zumindest 200 Textilfasern pro Quadratmillimeter, besonders bevorzugt zumindest 400 Textilfasern pro Quadratmillimeter, insbesondere eine Faserdichte zwischen 500 und 1000 Textilfasern pro Quadratmillimeter auf.In order to achieve a particularly good sealing effect, the textile fibers are arranged particularly densely in the fiber web. The fiber pile preferably has a fiber density of at least 200 textile fibers per square millimeter, particularly preferably at least 400 textile fibers per square millimeter, in particular a fiber density between 500 and 1000 textile fibers per square millimeter.

Um eine gute Dichtwirkung zu gewährleisten, weist der Faserflor zumindest eines textilen Dichtstreifens vorzugsweise eine über die gesamte Fläche homogene Besteckung auf. Die lokale Faserdichte ist somit im gesamten Flächenbereich des textilen Dichtstreifens - im Rahmen der Mess- und Produktionsgenauigkeit - gleich. Insbesondere sind die homogenen Dichtstreifen Büschel-frei ausgebildet. Dadurch kann mit einem textilen Dichtelement eine besonders gute, einer Gummilippe vergleichbare, Dichtwirkung erzielt werden.In order to ensure a good sealing effect, the fiber web of at least one textile sealing strip preferably has a covering that is homogeneous over the entire surface. The local fiber density is therefore the same in the entire surface area of the textile sealing strip - within the scope of the measurement and production accuracy. In particular, the homogeneous sealing strips are free of tufts. As a result, a particularly good sealing effect comparable to a rubber lip can be achieved with a textile sealing element.

In einer besonders bevorzugten Ausgestaltung weisen die textilen Dichtstreifen jeweils einen Trägerstreifen auf, in den der Faserflor eingebettet ist. Der Trägerstreifen ist dabei so an der Staubsaugerdüse angeordnet, dass er an der Unterseite des Gehäuses nicht hervorsteht. Der Trägerstreifen ist somit geschützt angeordnet und kann nicht durch Bodenkontakt beschädigt werden. Zweckmäßigerweise sind hierzu an der Unterseite des StaubsaugerdüsenGehäuses Ausnehmungen bzw. Rücksprünge ausgebildet, in die der Trägerstreifen versenkt eingebracht werden kann.In a particularly preferred embodiment, the textile sealing strips each have a carrier strip in which the fiber web is embedded. The carrier strip is arranged on the vacuum cleaner nozzle in such a way that it does not protrude from the underside of the housing. The carrier strip is thus arranged in a protected manner and cannot be damaged by contact with the ground. For this purpose, recesses or recesses into which the carrier strip can be sunk are expediently formed on the underside of the vacuum cleaner nozzle housing.

Die Einbettung des Faserflors in den Trägerstreifen erfolgt vorzugsweise durch Verkleben, Einmaschen - insbesondere in einen gewebten, gewirkten oder gestrickten Trägerstreifen - und/oder Verschweißen. Die vertikale Höhe, in welcher die einzelnen Textilfasern durch die Einbettung gegenüber dem Trägerstreifen mechanisch unbeweglich sind, wird auch als Einspannhöhe des Faserflors bezeichnet. Ganz besonders bevorzugt erstreckt sich die Einspannhöhe ebenfalls nicht über die Unterseite der Staubsaugerdüse hinaus. Somit sind die textilen Fasern des Faserflors unterhalb der Staubsaugerdüse voll beweglich.The fiber web is preferably embedded in the carrier strip by gluing, meshing - in particular in a woven, knitted or knitted carrier strip - and / or welding. The vertical height at which the individual textile fibers are mechanically immovable with respect to the carrier strip due to the embedding is also referred to as the clamping height of the fiber web. Most preferably, the extends The clamping height also does not go beyond the underside of the vacuum cleaner nozzle. This means that the textile fibers of the batt are fully movable below the vacuum cleaner nozzle.

Gemäß einer besonders bevorzugten Ausgestaltung ist zumindest ein textiler Dichtstreifen lösbar an dem Gehäuse befestigt. Bei sachgerechtem Betrieb ist eine hohe Langlebigkeit der textilen Dichtelemente zu erwarten. Dennoch ist es möglich, dass diese bei einer Fehlbenutzung durch Verschmutzung, Verkleben, mechanische Beschädigung und/oder thermisches Verschweißen ihre weiche Haptik und Dichteigenschaft verlieren. In diesem Fall ist es von Vorteil, eine besonders einfache Möglichkeit zur Auswechslung - insbesondere durch einen Endverbraucher - zu ermöglichen. Hierzu lassen sich beschädigte bzw. anderweitig unbrauchbar gewordene Dichtelemente - vorzugsweise werkzeuglos - von der Staubsaugerdüse lösen und durch Austauschteile ersetzen. Somit kann über die gesamte Lebensdauer der Staubsaugerdüse ein gleichbleibend gutes Reinigungsergebnis aufrechterhalten werden.According to a particularly preferred embodiment, at least one textile sealing strip is detachably attached to the housing. When used properly, the textile sealing elements can be expected to have a long service life. Nevertheless, it is possible that these lose their soft feel and sealing properties in the event of incorrect use due to soiling, sticking, mechanical damage and / or thermal welding. In this case, it is advantageous to enable a particularly simple option for replacement - in particular by an end user. For this purpose, damaged or otherwise unusable sealing elements - preferably without tools - can be detached from the vacuum cleaner nozzle and replaced with replacement parts. In this way, a consistently good cleaning result can be maintained over the entire service life of the vacuum cleaner nozzle.

Die textilen Dichtelemente im Rahmen der Erfindung sollen so ausgebildet sein, dass sie sich - insbesondere im Fall einer punktuellen Belastung - leicht verformen lassen. Hierdurch können sie zur Umgehung eines Hindernisses besonders leicht entgegen der Bewegungsrichtung umgebogen werden. Eine besonders feine Fasergestaltung ermöglicht dabei ein besonders flaches "Wegklappen" der einzelnen Fasern innerhalb des Textilgebildes. Gleichzeitig sind die Dichtelemente vorzugsweise so ausgebildet, dass sie zumindest teilweise auch vertikale Stützlasten übernehmen können. Insbesondere ist die textile Dichtanordnung derart ausgebildet, dass sie bei einer Belastung mit der halben Gewichtskraft des Gehäuses um nicht mehr als die Hälfte gegenüber einem unkomprimierten - kräftefreien - Zustand komprimiert wird. Daher kann sie zumindest nennenswerte Teile der notwendigen Tragkräfte aufbringen.The textile sealing elements in the context of the invention should be designed in such a way that they can be easily deformed - especially in the case of a point load. As a result, they can be bent particularly easily against the direction of movement in order to bypass an obstacle. A particularly fine fiber design enables a particularly flat "folding away" of the individual fibers within the textile structure. At the same time, the sealing elements are preferably designed in such a way that they can also at least partially take on vertical support loads. In particular, the textile sealing arrangement is designed in such a way that it is not more than half the opposite when subjected to a load with half the weight of the housing an uncompressed - force-free - state is compressed. Therefore, it can at least provide significant parts of the necessary load-bearing capacity.

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

Fig. 1
eine erfindungsgemäße Staubsaugerdüse in einer perspektivischen Darstellung,
Fig. 2
eine Unteransicht der Staubsaugerdüse und
Fig. 3
eine Seitenansicht der Staubsaugerdüse.
The invention is explained below with the aid of figures showing only one exemplary embodiment. It shows schematically:
Fig. 1
a vacuum cleaner nozzle according to the invention in a perspective view,
Fig. 2
a bottom view of the vacuum cleaner nozzle and
Fig. 3
a side view of the vacuum cleaner nozzle.

In der Fig. 1 ist die erfindungsgemäße Staubsaugerdüse dargestellt, welche ein Gehäuse 1 aufweist, das sich in einer Arbeitsrichtung x, einer Querrichtung y sowie einer Vertikalrichtung z erstreckt. In der Draufsicht hat das Gehäuse 1 eine in etwa rechteckförmige Gestalt, wobei die in der Querrichtung y gemessene Breite B ungefähr dem 1,5- bis 2-fachen der in der Arbeitsrichtung x gemessenen Länge L entspricht. An dem in der Arbeitsrichtung x hinteren Ende des Gehäuses 1 ist ein Sauganschlussstutzen 2 zum Verbinden der Staubsaugerdüse mit einer Saugluftführung angeschlossen. Der Sauganschlussstutzen 2 weist einen gewinkelten Rohranschluss 2a auf, welcher gegenüber dem Gehäuse 1 sowohl um eine in der Querrichtung y verlaufende Schwenkachse s1 sowie um eine Längsachse s2 verschwenkbar ist. Der gewinkelte Rohranschluss 2a ist über einen Wellschlauch 2b mit dem Gehäuse 1 verbunden.In the Fig. 1 the vacuum cleaner nozzle according to the invention is shown, which has a housing 1 which extends in a working direction x, a transverse direction y and a vertical direction z. In the top view, the housing 1 has an approximately rectangular shape, the width B measured in the transverse direction y being approximately 1.5 to 2 times the length L measured in the working direction x. A suction connection piece 2 for connecting the vacuum cleaner nozzle to a suction air duct is connected to the rear end of the housing 1 in the working direction x. The suction connection piece 2 has an angled pipe connection 2a which can be pivoted relative to the housing 1 both about a pivot axis s 1 running in the transverse direction y and about a longitudinal axis s 2. The angled pipe connection 2a is connected to the housing 1 via a corrugated hose 2b.

Der Unteransicht aus Fig. 2 entnimmt man, dass an der Unterseite 3 des Gehäuses 1 ein Saugmund 4 angeordnet ist, welcher sich in der Querrichtung y über nahezu die gesamte Breite B des Gehäuses 1 erstreckt. Der Saugmund 4 bildet eine unterseitige Öffnung des Gehäuses 1 und mündet in einen Saugraum, welcher strömungstechnisch mit dem Sauganschlussstutzen 2 verbunden ist. Innerhalb des Saugmunds 4 ist eine rotierend antreibbare Bürstenwalze 4a vorgesehen.The bottom view Fig. 2 it can be seen that a suction mouth 4 is arranged on the underside 3 of the housing 1, which suction mouth 4 extends in the transverse direction y over almost the entire width B of the housing 1. The suction mouth 4 forms an opening on the underside of the housing 1 and opens into a suction space which is fluidically connected to the suction connection piece 2. A brush roller 4a that can be driven in rotation is provided within the suction mouth 4.

In Übereinstimmung mit der Erfindung ist in der Arbeitsrichtung x hinter dem Saugmund 4 eine textile Dichtanordnung 5 angeordnet, welche eine Vielzahl von textilen Dichtstreifen 6 umfasst. Die textile Dichtanordnung 5 weist zumindest eine erste Dichtstreifengruppe I mit zumindest zwei der textilen Dichtstreifen 6 auf, welche linksseitig einer Längsmittelebene 7 des Gehäuses 1 angeordnet sind. Eine zweite Dichtstreifengruppe II umfasst zumindest zwei der textilen Dichtstreifen 6, welche rechtsseitig der Längsmittelebene 7 des Gehäuses 1 angeordnet sind. Die textilen Dichtstreifen 6 der ersten Dichtstreifengruppe I und der zweiten Dichtstreifengruppe II weisen jeweils eine Längserstreckung 8 auf, welche gegenüber der Arbeitsrichtung x um einen Winkel α schräg ausgerichtet ist. Die textilen Dichtstreifen 6 weisen im Ausführungsbeispiel eine Dichtstreifenbreite b von 5 mm und eine Dichtstreifenlänge I von 35 mm auf.In accordance with the invention, a textile sealing arrangement 5, which comprises a multiplicity of textile sealing strips 6, is arranged behind the suction mouth 4 in the working direction x. The textile sealing arrangement 5 has at least one first sealing strip group I with at least two of the textile sealing strips 6, which are arranged on the left side of a longitudinal center plane 7 of the housing 1. A second sealing strip group II comprises at least two of the textile sealing strips 6, which are arranged on the right-hand side of the longitudinal center plane 7 of the housing 1. The textile sealing strips 6 of the first sealing strip group I and the second sealing strip group II each have a longitudinal extension 8 which is oriented obliquely with respect to the working direction x by an angle α. In the exemplary embodiment, the textile sealing strips 6 have a sealing strip width b of 5 mm and a sealing strip length I of 35 mm.

Die textilen Dichtstreifen 6 der ersten Dichtstreifengruppe I und die textilen Dichtstreifen 6 der zweiten Dichtstreifengruppe II sind bezüglich der Längsmittelebene 7 symmetrisch angeordnet. In den Eckbereichen des rechteckförmigen Gehäuses 1 sind jeweils Laufrollen 9 angeordnet, welche auf Hartböden als Abstützelemente fungieren. Dabei fluchtet die Drehachse der hinteren Laufrollen 9 mit der Schwenkachse s1 Wie man der Seitenansicht aus Fig. 3 entnimmt, spannen die Laufrollen 9 tangential eine Aufstandsebene 10 auf, gegenüber der die textilen Dichtstreifen 6 geringfügig in der Vertikalrichtung z nach unten hervorstehen.The textile sealing strips 6 of the first sealing strip group I and the textile sealing strips 6 of the second sealing strip group II are arranged symmetrically with respect to the longitudinal center plane 7. In the corner areas of the rectangular housing 1, rollers 9 are arranged, which act as support elements on hard floors. The axis of rotation is aligned rear castors 9 with the pivot axis s 1 How to look at the side view Fig. 3 removes, the rollers 9 span tangentially a contact plane 10, with respect to which the textile sealing strips 6 protrude slightly in the vertical direction z downwards.

Die textilen Dichtstreifen 6 laufen im Ausführungsbeispiel in der Arbeitsrichtung x zu der Längsmittelebene 7 hinzu. Hierdurch wird bei einem Rückwärtshub - eine Reinigungsbewegung entgegen der Arbeitsrichtung x - eine Sammelwirkung erzielt, welche etwaige Grobschmutzpartikel in den mittleren Bereich des Saugmundes 4 konzentriert, wo der Saugluftstrom am stärksten ausgebildet ist. Die textilen Dichtstreifen 6 der ersten Dichtstreifengruppe I und der zweiten Dichtstreifengruppe II sind derart angeordnet, dass sie sich zumindest teilweise in der Querrichtung y überdecken. In der Querrichtung y beträgt die Überdeckung u etwa 10 % der Erstreckung v eines textilen Dichtstreifens 6.In the exemplary embodiment, the textile sealing strips 6 run towards the longitudinal center plane 7 in the working direction x. As a result, with a backward stroke - a cleaning movement against the working direction x - a collecting effect is achieved which concentrates any coarse dirt particles in the central area of the suction mouth 4, where the suction air flow is strongest. The textile sealing strips 6 of the first sealing strip group I and the second sealing strip group II are arranged in such a way that they at least partially overlap in the transverse direction y. In the transverse direction y, the overlap u is approximately 10% of the extension v of a textile sealing strip 6.

Zusätzlich zu den beiden quergestellten Dichtstreifengruppen I, II weist die Dichtanordnung in der Querrichtung y endseitig jeweils einen längsparallelen textilen Randstreifen 11 auf. Dieser ist in seinen Abmessungen und Materialbeschaffenheit identisch zu der Mehrzahl der textilen Dichtstreifen 6 ausgebildet. Ferner sind die Randstreifen 11 vollständig hinter dem Saugmund 4 angeordnet. Die textilen Dichtstreifen 6 der ersten Dichtstreifengruppe und die textilen Dichtstreifen 6 der zweiten Dichtstreifengruppe II sind jeweils zueinander parallel ausgerichtet.In addition to the two transversely positioned sealing strip groups I, II, the sealing arrangement has a longitudinally parallel textile edge strip 11 at each end in the transverse direction y. This is identical in its dimensions and material properties to the majority of the textile sealing strips 6. Furthermore, the edge strips 11 are arranged completely behind the suction mouth 4. The textile sealing strips 6 of the first sealing strip group and the textile sealing strips 6 of the second sealing strip group II are each aligned parallel to one another.

In den Figuren ist überdies angedeutet, dass die textilen Dichtstreifen 6 einen an der Unterseite 3 des Gehäuses 1 vorstehenden Faserflor aus Textilfasern aufweisen. Beispielhaft sind die Textilfasern gerade und mit einer Feinheit von etwa 1 dtex ausgebildet. Die Besteckung des Faserflors ist über die gesamte Fläche der Dichtstreifen 6 und der Randstreifen 11 homogen ausgebildet und weist eine Faserdichte von zumindest 400 Textilfasern pro Quadratmillimetern auf. Die textilen Dichtstreifen 6 und die Randstreifen 11 sind jeweils mit einem Trägerstreifen ausgebildet sind, in denen der Faserflor eingebettet ist. Der Trägerstreifen steht dabei nicht an der Unterseite 3 des Gehäuses 1 vor, sodass dies in den Figuren nicht erkennbar ist. Die textilen Dichtstreifen 6 sowie die Randstreifen 11 sind lösbar an dem Gehäuse 1 befestigt und können werkzeuglos durch einen Benutzer ausgetauscht werden.In the figures it is also indicated that the textile sealing strips 6 are a fiber pile made of textile fibers protruding from the underside 3 of the housing 1 exhibit. For example, the textile fibers are straight and have a fineness of about 1 dtex. The clothing of the fiber web is formed homogeneously over the entire surface of the sealing strips 6 and the edge strips 11 and has a fiber density of at least 400 textile fibers per square millimeter. The textile sealing strips 6 and the edge strips 11 are each formed with a carrier strip in which the fiber web is embedded. The carrier strip does not protrude from the underside 3 of the housing 1, so that this cannot be seen in the figures. The textile sealing strips 6 and the edge strips 11 are detachably attached to the housing 1 and can be replaced by a user without tools.

Claims (15)

Staubsaugerdüse mit einem Gehäuse (1) und einem an einer Unterseite (3) des Gehäuses (1) angeordneten Saugmund (4), welcher sich in einer quer zu einer Arbeitsrichtung (x) stehenden Querrichtung (y) erstreckt, dadurch gekennzeichnet, dass in der Arbeitsrichtung (x) hinter dem Saugmund (4) eine textile Dichtanordnung (5) angeordnet ist, welche eine Vielzahl von textilen Dichtstreifen (6) umfasst,
dass eine erste Dichtstreifengruppe (I) zumindest zwei der textilen Dichtstreifen (6) umfasst, welche linksseitig einer Längsmittelebene (7) des Gehäuses (1) angeordnet sind,
dass eine zweite Dichtstreifengruppe (II) zumindest zwei der textilen Dichtstreifen (6) umfasst, welche rechtsseitig der Längsmittelebene (7) des Gehäuses (7) angeordnet sind,
und das die textilen Dichtstreifen (6) der ersten Dichtstreifengruppe (I) und der zweiten Dichtstreifengruppe (II) jeweils eine Längserstreckung (8) aufweisen, welche gegenüber der Arbeitsrichtung (x) schräg ausgerichtet ist.Vacuum cleaner nozzle with a housing (1) and a suction mouth (4) which is arranged on an underside (3) of the housing (1) and which extends in a transverse direction (y) transverse to a working direction (x), characterized in that in the Working direction (x) behind the suction mouth (4) a textile sealing arrangement (5) is arranged, which comprises a plurality of textile sealing strips (6),
that a first sealing strip group (I) comprises at least two of the textile sealing strips (6) which are arranged on the left side of a longitudinal center plane (7) of the housing (1),
that a second sealing strip group (II) comprises at least two of the textile sealing strips (6) which are arranged on the right-hand side of the longitudinal center plane (7) of the housing (7),
and that the textile sealing strips (6) of the first sealing strip group (I) and the second sealing strip group (II) each have a longitudinal extension (8) which is oriented obliquely with respect to the working direction (x). Staubsaugerdüse nach Anspruch 1, dadurch gekennzeichnet, dass die textilen Dichtstreifen (6) der ersten Dichtstreifengruppe (I) und die textilen Dichtstreifen (6) der zweiten Dichtstreifengruppe (II) symmetrisch bezüglich der Längsmittelebene (7) angeordnet sind.Vacuum cleaner nozzle according to claim 1, characterized in that the textile sealing strips (6) of the first sealing strip group (I) and the textile sealing strips (6) of the second sealing strip group (II) are arranged symmetrically with respect to the longitudinal center plane (7). Staubsaugerdüse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an der Unterseite (3) des Gehäuses Stützelemente (9) hervorstehen, welche eine Aufstandsebene (10) aufspannen und dass die textilen Dichtstreifen (6) zumindest bis zu der Aufstandsebene (10) vorstehen.Vacuum cleaner nozzle according to claim 1 or 2, characterized in that on the underside (3) of the housing support elements (9) protrude, which one Spread the contact plane (10) and that the textile sealing strips (6) protrude at least as far as the contact plane (10). Staubsaugerdüse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die textilen Dichtstreifen (6) in der Arbeitsrichtung (x) zu der Längsmittelebene (7) hin zulaufen.Vacuum cleaner nozzle according to one of Claims 1 to 3, characterized in that the textile sealing strips (6) taper towards the longitudinal center plane (7) in the working direction (x). Staubsaugerdüse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sich zwei benachbart angeordnete textile Dichtstreifen (6) in der Querrichtung (y) überdecken.Vacuum cleaner nozzle according to one of Claims 1 to 4, characterized in that two adjacently arranged textile sealing strips (6) overlap in the transverse direction (y). Staubsaugerdüse nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Dichtanordnung (5) in der Querrichtung (y) endseitig jeweils einen längsparallelen textilen Randstreifen (11) aufweist.Vacuum cleaner nozzle according to one of Claims 1 to 5, characterized in that the sealing arrangement (5) has a longitudinally parallel textile edge strip (11) at each end in the transverse direction (y). Staubsaugerdüse nach Anspruch 6, dadurch gekennzeichnet, dass die Randstreifen (11) jeweils vollständig hinter dem Saugmund (4) angeordnet sind.Vacuum cleaner nozzle according to Claim 6, characterized in that the edge strips (11) are each arranged completely behind the suction mouth (4). Staubsaugerdüse nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die textilen Dichtstreifen (6) der ersten Dichtstreifengruppe (I) und die textilen Dichtstreifen (6) der zweiten Dichtstreifengruppe (II) jeweils zueinander parallel ausgerichtet sind.Vacuum cleaner nozzle according to one of Claims 1 to 7, characterized in that the textile sealing strips (6) of the first sealing strip group (I) and the textile sealing strips (6) of the second sealing strip group (II) are each aligned parallel to one another. Staubsaugerdüse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die textilen Dichtstreifen (6) einen an der Unterseite (3) des Gehäuses (1) vorstehenden Faserflor aus Textilfasern aufweisen.Vacuum cleaner nozzle according to one of Claims 1 to 8, characterized in that the textile sealing strips (6) have a fiber pile made of textile fibers protruding from the underside (3) of the housing (1). Staubsaugerdüse nach Anspruch 9, dadurch gekennzeichnet, dass die Textilfasern gerade ausgebildet sind.Vacuum cleaner nozzle according to Claim 9, characterized in that the textile fibers are straight. Staubsaugerdüse nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Textilfasern eine Feinheit von höchstens 4 dtex aufweisen.Vacuum cleaner nozzle according to claim 9 or 10, characterized in that the textile fibers have a fineness of at most 4 dtex. Staubsaugerdüse nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass der Faserflor eine Faserdichte von zumindest 200 Textilfasern pro Quadratmillimeter aufweist.Vacuum cleaner nozzle according to one of Claims 9 to 11, characterized in that the fiber web has a fiber density of at least 200 textile fibers per square millimeter. Staubsaugerdüse nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass der Faserflor eines textilen Dichtstreifens eine über die gesamte Fläche homogene Besteckung aufweist.Vacuum cleaner nozzle according to one of Claims 9 to 12, characterized in that the fiber pile of a textile sealing strip has a covering that is homogeneous over the entire surface. Staubsaugerdüse nach einem der Ansprüche 9 bis 13, dadurch gekennzeichnet, dass die textilen Dichtstreifen (6) jeweils einen Trägerstreifen aufweisen, in den der Faserflor eingebettet ist, und dass der Trägerstreifen nicht an der Unterseite des Gehäuses hervorsteht.Vacuum cleaner nozzle according to one of Claims 9 to 13, characterized in that the textile sealing strips (6) each have a carrier strip in which the batt is embedded, and that the carrier strip does not protrude from the underside of the housing. Staubsaugerdüse nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass zumindest ein textiler Dichtstreifen (6) lösbar an dem Gehäuse (1) befestigt ist.Vacuum cleaner nozzle according to one of Claims 1 to 14, characterized in that at least one textile sealing strip (6) is detachably attached to the housing (1).
EP20168232.5A 2020-04-06 2020-04-06 Vacuum cleaner jet Active EP3892177B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20168232.5A EP3892177B1 (en) 2020-04-06 2020-04-06 Vacuum cleaner jet

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Application Number Priority Date Filing Date Title
EP20168232.5A EP3892177B1 (en) 2020-04-06 2020-04-06 Vacuum cleaner jet

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EP3892177A1 true EP3892177A1 (en) 2021-10-13
EP3892177B1 EP3892177B1 (en) 2022-08-17

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353546A1 (en) * 1988-08-01 1990-02-07 Siemens Aktiengesellschaft Suction cleaner nozzle
DE102014111609A1 (en) * 2014-08-14 2016-02-18 Miele & Cie. Kg Vacuum cleaner mouth for a vacuum cleaner or a floor nozzle of a vacuum cleaner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353546A1 (en) * 1988-08-01 1990-02-07 Siemens Aktiengesellschaft Suction cleaner nozzle
DE102014111609A1 (en) * 2014-08-14 2016-02-18 Miele & Cie. Kg Vacuum cleaner mouth for a vacuum cleaner or a floor nozzle of a vacuum cleaner

Also Published As

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