EP3892177B1 - Vacuum cleaner jet - Google Patents

Vacuum cleaner jet Download PDF

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Publication number
EP3892177B1
EP3892177B1 EP20168232.5A EP20168232A EP3892177B1 EP 3892177 B1 EP3892177 B1 EP 3892177B1 EP 20168232 A EP20168232 A EP 20168232A EP 3892177 B1 EP3892177 B1 EP 3892177B1
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EP
European Patent Office
Prior art keywords
textile
vacuum cleaner
sealing
cleaner nozzle
nozzle according
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EP20168232.5A
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German (de)
French (fr)
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EP3892177A1 (en
Inventor
Philipp Rath
Martin Zydek
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Wessel Werk GmbH
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Wessel Werk GmbH
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Priority to EP20168232.5A priority Critical patent/EP3892177B1/en
Publication of EP3892177A1 publication Critical patent/EP3892177A1/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 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 area.
  • the design of the vacuum cleaner nozzle has a particularly large influence on the cleaning result that can be achieved when cleaning with a vacuum cleaner.
  • vacuum cleaner nozzles are from DE 10 2014 111609 A1 and EP 0 353 546 A1 known.
  • the geometric-technical design of the vacuum cleaner nozzle must take many different boundary conditions into account. So there are special vacuum cleaner nozzles, which are intended in particular for floor cleaning - so-called vacuum cleaner floor nozzles. Particularly with this type, a seal between the body of the vacuum cleaner nozzle and the surface to be cleaned is important in order to create sufficient negative pressures 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 gently support a vacuum cleaner nozzle housing on the surface to be cleaned and on the other hand also contribute in a certain way to sealing the suction mouth from the ambient pressure.
  • the disadvantage here is that the sealing effect provided by the bristle strips is insufficient.
  • Continuous bristle strips also significantly worsen the absorption properties of coarse dirt, since this is pushed in front of the bristle strip and therefore 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, since they can cling to the contour of the floor surface and are made of the same material without any breakthroughs or openings.
  • a textile sealing arrangement is provided according to the invention, which is arranged in the working direction behind the suction mouth.
  • This comprises a large number of textile sealing strips, with a first sealing strip group comprising at least two of the textile sealing strips which are arranged on the left-hand 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 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 group each have a longitudinal extension, which is aligned obliquely relative 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 in relation 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 that 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 sealing strips spaced apart allows the formation of passages for coarse dirt particles.
  • the slanted position can also be used to achieve a directed guiding or collecting effect through the interaction of the individual slanted sealing strips during a forward or backward stroke in or against the working direction.
  • the longitudinal extent of the sealing strips encloses an angle of between 30° and 80° with the working direction.
  • Each of the angles is preferably between 45° and 75°, in particular approximately 60°.
  • the textile sealing strips 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 that of a rubber lip can already be achieved with particular soft clinging properties can be achieved.
  • a ratio of the length to the width of at least 1:10, particularly preferably at least 1:15, is provided.
  • each of the two sealing strip groups are particularly preferably arranged directly adjacent to one another, i.e. 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 and a congruent behavior with a forward stroke or with a backward stroke on both halves of the vacuum cleaner nozzle.
  • Supporting elements expediently protrude from the underside of the housing and span a footprint.
  • the textile sealing strips protrude at least as far as the uprising level.
  • the support elements can be provided in particular by skids, rollers and/or bristle strips that are more dimensionally stable.
  • the textile sealing strips can be made particularly soft.
  • the invention is characterized in particular by the finding that with a textile Sealing strip a sealing effect can be generated, which is equivalent or even superior to a sealing lip.
  • particularly soft textile sealing elements are characterized by particularly good clinging properties.
  • fibers of a soft textile sealing strip - unlike sealing lips - can also penetrate into fine cracks and crevices in order to significantly improve the suction result on jointed hard floors.
  • the textile sealing strips run towards the longitudinal center plane in the working direction.
  • the slanted sealing strips have an additional collection function during a backward stroke, which concentrates coarse dirt in front of 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.
  • the extent of at least one textile sealing strip thus intersects with the transverse extent of at least one adjacently arranged textile sealing strip. This is possible in particular due to the inclined position according to the invention.
  • the overlap improves the sealing effect and complete coverage of the work area on a forward or reverse 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 in the transverse direction has a longitudinally parallel - i. H. aligned in the working direction - textile edge strips.
  • the textile edge strip forms a support element which can exert at least additional load-bearing forces during a movement in the working direction.
  • a particularly strong seal is guaranteed on the sides, so that the suction effect is concentrated on the area in front of and behind the suction mouth. This simplifies thorough pick-up of dirt particles - especially coarse dirt.
  • the edge strips are preferably each arranged completely behind the suction mouth. They therefore serve in particular to channel the intake air stream flowing in from the rear.
  • 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 development of a uniform supporting and sealing effect with comparable cleaning properties at all points.
  • the textile sealing strips have a fibrous web made of textile fibers that protrudes from the underside of the housing.
  • One or more textile fibers can be embedded at one end in the carrier.
  • one or more fibers can protrude downwards with both ends and—roughly in the middle—be fastened to the carrier.
  • the textile fibers are straight - i.e. straight. H. in particular not laid in loops and/or curled - trained.
  • the textile fibers can be arranged particularly densely in order to achieve good fluidic sealing.
  • the textile fibers preferably have a fineness of less than 5 dtex, in particular less than 4 dtex. Fibers with a fineness of between 0.5 dtex and 2 dtex are very particularly preferably used.
  • the textile fibers are preferably formed from one or more plastics. Particular preference is given to forming part of the textile fibers or all of the textile fibers from a material selected from the group consisting of polyester, nylon, acrylic and cellulose.
  • the textile fibers are arranged particularly densely in the fibrous web.
  • the fibrous web 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 fibrous 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 measurement and production accuracy.
  • the homogeneous sealing strips are tuft-free.
  • the textile sealing strips each have a carrier strip in which the fibrous 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 ground contact.
  • recesses or recesses are expediently formed on the underside of the vacuum cleaner nozzle housing, into which the carrier strip can be countersunk.
  • the fibrous web is preferably embedded in the carrier strip by gluing, stitching--in particular into a woven, warp-knitted or crocheted carrier strip--and/or welding.
  • the vertical height at which the individual textile fibers are mechanically immobile in relation to the carrier strip due to their embedding is also referred to as the clamping height of the fiber batt. Most preferably, the extends The clamping height also does not exceed the underside of the vacuum cleaner nozzle. This means that the textile fibers of the fibrous web are fully mobile below the vacuum cleaner nozzle.
  • At least one textile sealing strip is detachably attached to the housing.
  • a long service life of the textile sealing elements can be expected.
  • damaged or otherwise unusable sealing elements can be detached from the vacuum cleaner nozzle, preferably without tools, and replaced with replacement parts. A consistently good cleaning result can thus be maintained over the entire service life of the vacuum cleaner nozzle.
  • the textile sealing elements within the scope of the invention should be designed in such a way that they can be easily deformed, particularly in the case of point loading. As a result, they can be bent particularly easily against the direction of movement in order to avoid an obstacle.
  • a particularly fine fiber design enables the individual fibers within the textile structure to “fold away” particularly flatly.
  • the sealing elements are preferably designed in such a way that they can at least partially also take on vertical support loads.
  • the textile sealing arrangement is designed in such a way that, when loaded with half the weight of the housing, it is not more than half the weight an uncompressed - force-free - state is compressed. Therefore, it can raise at least significant parts of the necessary load-bearing capacity.
  • 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.
  • the housing 1 has an approximately rectangular shape, the width B measured in the transverse direction y corresponding to approximately 1.5 to 2 times the length L measured in the working direction x.
  • a suction connection piece 2 is connected for connecting the vacuum cleaner nozzle to a suction air duct.
  • 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.
  • the bottom view 2 it can be seen that on the underside 3 of the housing 1 there is a suction mouth 4 which 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 chamber which is fluidically connected to the suction connection piece 2 .
  • a brush roller 4a Provided inside the suction mouth 4 is a brush roller 4a that can be driven in rotation.
  • a textile sealing arrangement 5 is arranged behind the suction mouth 4 in the working direction x, which arrangement comprises a multiplicity of textile sealing strips 6 .
  • the textile sealing arrangement 5 has at least a first sealing strip group I with at least two of the textile sealing strips 6 which are arranged to the left 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 extent 8 which is aligned at an angle ⁇ obliquely relative to the working direction x.
  • 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 rollers 9 with the pivot axis s 1 As can be seen from the side view 3 removes, the rollers 9 tangentially span a contact plane 10, compared to which the textile sealing strips 6 protrude slightly downwards in the vertical direction z.
  • the textile sealing strips 6 run towards the longitudinal center plane 7 in the working direction x.
  • a cleaning movement counter to the working direction x a collecting effect is achieved, which concentrates any coarse dirt particles in the central region 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 about 10% of the extent 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 to the majority of the textile sealing strips 6 in terms of its dimensions and material properties. 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 strip 6 has a fibrous web 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 quilting of the fibrous web is homogeneous 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 fibrous 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)

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 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 area. The design of the vacuum cleaner nozzle has a particularly large influence on the cleaning result that can be achieved when cleaning with a vacuum cleaner.

Beispiele von Staubsaugerdüsen sind aus DE 10 2014 111609 A1 und EP 0 353 546 A1 bekannt.Examples of vacuum cleaner nozzles are from DE 10 2014 111609 A1 and EP 0 353 546 A1 known.

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 geometric-technical design of the vacuum cleaner nozzle must take many different boundary conditions into account. So there are special vacuum cleaner nozzles, which are intended in particular for floor cleaning - so-called vacuum cleaner floor nozzles. Particularly with this type, a seal between the body of the vacuum cleaner nozzle and the surface to be cleaned is important in order to create sufficient negative pressures 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 the past, the cleaning of grouted hard floors in particular - i.e. airtight floor surfaces with gaps and cracks arranged in them - has repeatedly proved difficult. In order to be able to loosen and remove dirt particles embedded within the joints, it is necessary to generate particularly large negative pressures. This is further complicated by the fact that due to applicable environmental regulations, the physical performance of vacuum cleaners has continued to decrease in recent years. It is therefore not possible to generate the required negative pressure solely by increasing the applied vacuum cleaner performance, but this must be achieved to a large extent by suitable sealing measures on the vacuum cleaner nozzle.

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 gently support a vacuum cleaner nozzle housing on the surface to be cleaned and on the other hand also contribute in a certain way to sealing the suction mouth from the ambient pressure. The disadvantage here, however, is that the sealing effect provided by the bristle strips is insufficient. Continuous bristle strips also significantly worsen the absorption properties of coarse dirt, since this is pushed in front of the bristle strip and therefore 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, since they can cling to the contour of the floor surface and are made of the same material without any breakthroughs or 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 suppleness and at the same time ensure protection of the surface to be cleaned, however, elastic sealing strips must be made 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 therefore cannot be absorbed effectively.

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 expensive in terms of material and construction have been required to date in order to achieve sufficient load-bearing capacities with good sealing and sufficient absorption of coarse dirt. Against this background, the invention is based on the object of specifying a cost-effective solution for achieving these goals. The subject matter 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.

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 in the working direction behind the suction mouth. This comprises a large number of textile sealing strips, with a first sealing strip group comprising at least two of the textile sealing strips which are arranged on the left-hand 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 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 group each have a longitudinal extension, which is aligned obliquely relative 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 in relation 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 that 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 sealing strips spaced apart allows the formation of passages for coarse dirt particles. The slanted position can also be used to achieve a directed guiding or collecting effect through the interaction of the individual slanted 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°.Preferably, the longitudinal extent of the sealing strips encloses an angle of between 30° and 80° 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.Preferably, the textile sealing strips each have a length of at least 2 cm, preferably 5 to 8 cm, measured along their longitudinal direction. Perpendicular to the direction of longitudinal extent, 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 that of a rubber lip can already be achieved with particular soft clinging properties can be achieved. In order to maintain this sealing lip characteristic, a ratio of the length to the 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.The sealing strips of each of the two sealing strip groups are particularly preferably arranged directly adjacent to one another, i.e. 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 and 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.Supporting elements expediently protrude from the underside of the housing and span a footprint. The textile sealing strips protrude at least as far as the uprising level. The support elements can be provided in particular by skids, rollers and/or bristle strips that are more dimensionally stable. In this variant, the textile sealing strips can be made particularly soft. Here, the invention is characterized in particular by the finding that with a textile Sealing strip a sealing effect can be generated, which is equivalent or even superior to a sealing lip. At the same time, particularly soft textile sealing elements are characterized by particularly good clinging properties. In particular, fibers of a soft textile sealing strip - unlike sealing lips - can also penetrate into fine cracks and crevices 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 towards the longitudinal center plane in the working direction. As a result, the slanted sealing strips have an additional collection function during a backward stroke, which concentrates coarse dirt in front of the longitudinal center plane - and thus towards the mouth of the suction line. With 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.Provision is particularly preferably made for two adjacently arranged textile sealing strips to overlap in the transverse direction. The extent of at least one textile sealing strip thus intersects with the transverse extent of at least one adjacently arranged textile sealing strip. This is possible in particular due to the inclined position according to the invention. The overlap improves the sealing effect and complete coverage of the work area on a forward or reverse 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.Preferably, the sealing arrangement in the transverse direction has a longitudinally parallel - 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 additional load-bearing forces during a movement in the working direction. At the same time, a particularly strong seal is guaranteed on the sides, so that the suction effect is concentrated on the area in front of and behind the suction mouth. This simplifies thorough pick-up of dirt particles - especially coarse dirt.

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 therefore serve in particular to channel the intake air stream flowing in from the rear.

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 development of a uniform supporting and sealing effect with comparable cleaning properties 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 fibrous web made of textile fibers that protrudes from the underside of the housing. This involves a large number of textile fibers--in the unloaded state--aligned essentially perpendicularly to the underside of the vacuum cleaner nozzle. These are - held in an associated carrier, which is attached to the housing of the vacuum cleaner nozzle - in particular with an (upper) end. At least one end of the fiber projects freely below 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 at one end in the carrier. Alternatively or additionally, one or more fibers can protrude downwards with both ends and—roughly in the middle—be fastened to the carrier.

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.Most preferably, the textile fibers are straight - i.e. straight. H. in particular not laid in loops and/or curled - trained. In this configuration, the textile fibers can be arranged particularly densely in order to achieve good fluidic sealing.

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.In the context of the invention, especially fine fibers are provided. The textile fibers preferably have a fineness of less than 5 dtex, in particular less than 4 dtex. Fibers with a fineness of 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. Particular preference is given to forming part of the textile fibers or all of the textile fibers from a material selected from the group consisting of polyester, nylon, acrylic and 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 fibrous web. Preferably, the fibrous web 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 fibrous 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 measurement and production accuracy. In particular, the homogeneous sealing strips are tuft-free. 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 fibrous 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 ground contact. For this purpose, recesses or recesses are expediently formed on the underside of the vacuum cleaner nozzle housing, into which the carrier strip can be countersunk.

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 fibrous web is preferably embedded in the carrier strip by gluing, stitching--in particular into a woven, warp-knitted or crocheted carrier strip--and/or welding. The vertical height at which the individual textile fibers are mechanically immobile in relation to the carrier strip due to their embedding is also referred to as the clamping height of the fiber batt. Most preferably, the extends The clamping height also does not exceed the underside of the vacuum cleaner nozzle. This means that the textile fibers of the fibrous web are fully mobile 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. With proper operation, a long service life of the textile sealing elements can be expected. However, it is possible that they lose their soft feel and sealing properties if they are misused due to dirt, sticking, mechanical damage and/or thermal welding. In this case, it is advantageous to enable a particularly simple possibility for replacement—in particular by an end user. For this purpose, damaged or otherwise unusable sealing elements can be detached from the vacuum cleaner nozzle, preferably without tools, and replaced with replacement parts. A consistently good cleaning result can thus 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 within the scope of the invention should be designed in such a way that they can be easily deformed, particularly in the case of point loading. As a result, they can be bent particularly easily against the direction of movement in order to avoid an obstacle. A particularly fine fiber design enables the individual fibers within the textile structure to “fold away” particularly flatly. At the same time, the sealing elements are preferably designed in such a way that they can at least partially also take on vertical support loads. In particular, the textile sealing arrangement is designed in such a way that, when loaded with half the weight of the housing, it is not more than half the weight an uncompressed - force-free - state is compressed. Therefore, it can raise at least 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 reference to figures showing only one exemplary embodiment. It shows schematically:
1
a vacuum cleaner nozzle according to the invention in a perspective view,
2
a bottom view of the vacuum cleaner nozzle and
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 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 corresponding to approximately 1.5 to 2 times the length L measured in the working direction x. At the rear end of the housing 1 in the working direction x, a suction connection piece 2 is connected for connecting the vacuum cleaner nozzle to a suction air duct. 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 2 it can be seen that on the underside 3 of the housing 1 there is a suction mouth 4 which 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 chamber which is fluidically connected to the suction connection piece 2 . Provided inside the suction mouth 4 is a brush roller 4a that can be driven in rotation.

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 is arranged behind the suction mouth 4 in the working direction x, which arrangement comprises a multiplicity of textile sealing strips 6 . The textile sealing arrangement 5 has at least a first sealing strip group I with at least two of the textile sealing strips 6 which are arranged to the left 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 extent 8 which is aligned at an angle α obliquely relative to the working direction x. 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 rollers 9 with the pivot axis s 1 As can be seen from the side view 3 removes, the rollers 9 tangentially span a contact plane 10, compared to which the textile sealing strips 6 protrude slightly downwards in the vertical direction z.

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, during a backward stroke—a cleaning movement counter to the working direction x—a collecting effect is achieved, which concentrates any coarse dirt particles in the central region 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 about 10% of the extent 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 transverse 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 to the majority of the textile sealing strips 6 in terms of its dimensions and material properties. 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 strip 6 has a fibrous web 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 quilting of the fibrous web is homogeneous 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 fibrous 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)

  1. A vacuum cleaner nozzle comprising a housing (1) and a suction mouth (4) arranged on an underside (3) of the housing (1), which extends in a transverse direction (y) which is transverse to a working direction (x), characterized in that a textile sealing assembly (5), which comprises a plurality of textile sealing strips (6), is arranged behind the suction mouth (4) in the working direction (x),
    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 central 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 side of the longitudinal central plane (7) of the housing (7),
    and that the textile sealing strips (6) of the first sealing strip group (I) and of the second sealing strip group (II) in each case have a longitudinal extension (8), which is aligned obliquely with respect to the working direction (x).
  2. The 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 central plane (7).
  3. The vacuum cleaner nozzle according to claim 1 or 2, characterized in that support elements (9), which span a contact plane (10), protrude on the underside (3) of the housing, and that the textile sealing strips (6) protrude at least to the contact plane (10).
  4. The vacuum cleaner nozzle according to one of claims 1 to 3, characterized in that the textile sealing strips (6) taper towards the longitudinal central plane (7) in the working direction (x).
  5. The 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).
  6. The vacuum cleaner nozzle according to one of claims 1 to 5, characterized in that the sealing assembly (5) in each case has a longitudinally parallel textile edge strip (11) on the end side in the transverse direction (y).
  7. The vacuum cleaner nozzle according to claim 6, characterized in that the edge strips (11) are in each case arranged completely behind the suction mouth (4).
  8. The 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 in each case aligned parallel to one another.
  9. The vacuum cleaner nozzle according to one of claims 1 to 8, characterized in that the textile sealing strips (6) have a fibrous web of textile fibers protruding on the underside (3) of the housing (1).
  10. The vacuum cleaner nozzle according to claim 9, characterized in that the textile fibers are formed in a straight manner.
  11. The vacuum cleaner nozzle according to claim 9 or 10, characterized in that the textile fibers have a fineness of maximally 4 dtex.
  12. The vacuum cleaner nozzle according to one of claims 9 to 11, characterized in that the fibrous web has a fiber density of at least 200 textile fibers per square millimeter.
  13. The vacuum cleaner nozzle according to one of claims 9 to 12, characterized in that the fibrous web of a textile sealing strip has a fitting, which is homogenous over the entire area.
  14. The vacuum cleaner nozzle according to one of claims 9 to 13, characterized in that the textile sealing strips (6) in each case have a carrier strip, into which the fibrous web is embedded, and that the carrier strip does not protrude on the underside of the housing.
  15. The vacuum cleaner nozzle according to one of claims 1 to 14, characterized in that at least one textile sealing (6) is releasable fastened 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

Applications Claiming Priority (1)

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

Publications (2)

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

Family

ID=70224259

Family Applications (1)

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

Country Status (1)

Country Link
EP (1) EP3892177B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8809802U1 (en) * 1988-08-01 1989-11-30 Siemens AG, 1000 Berlin und 8000 München Vacuum cleaner mouthpiece
DE102014111609B4 (en) * 2014-08-14 2019-10-17 Miele & Cie. Kg Vacuum cleaner mouth for a vacuum cleaner or a floor nozzle of a vacuum cleaner

Also Published As

Publication number Publication date
EP3892177A1 (en) 2021-10-13

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