EP2989953B1 - Use of a suction nozzle which can be connected to a vacuum cleaner for suction of a textile floor surface, a tiled hard floor surface and a smooth unjoined hard floor surface - Google Patents

Use of a suction nozzle which can be connected to a vacuum cleaner for suction of a textile floor surface, a tiled hard floor surface and a smooth unjoined hard floor surface Download PDF

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Publication number
EP2989953B1
EP2989953B1 EP15181548.7A EP15181548A EP2989953B1 EP 2989953 B1 EP2989953 B1 EP 2989953B1 EP 15181548 A EP15181548 A EP 15181548A EP 2989953 B1 EP2989953 B1 EP 2989953B1
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EP
European Patent Office
Prior art keywords
floor surface
suction
hard
vacuuming
hard floor
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EP15181548.7A
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German (de)
French (fr)
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EP2989953A1 (en
Inventor
Klaus-Dieter Dipl.-Ing. Riehl
Horst Dipl.-Ing. Dilger
Martin Zydek
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Wessel Werk GmbH
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Wessel Werk GmbH
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0633—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads
    • A47L9/064—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor
    • A47L9/0653—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor with mechanical actuation, e.g. using a lever
    • 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
    • A47L9/066—Nozzles with fixed, e.g. adjustably fixed brushes or the like with adjustably mounted brushes, combs, lips or pads; Height adjustment of nozzle or dust loosening tools

Definitions

  • the invention relates to the use of a suction nozzle which can be connected to a floor vacuum cleaner for vacuuming a textile floor surface, a tiled hard floor surface and an unauthorized smooth hard floor surface.
  • the suction nozzle on which the invention is based comprises a suction head, a suction pipe connection piece which is pivotably connected to a suction channel of the suction head about a pivot axis, a sliding sole which has at least one suction mouth delimited on the underside by suction mouth edges, at least one load-bearing sealing element which is fastened to a vertically adjustable support is, and a switching element accessible on the suction head for vertical adjustment of the carrier between at least two functional positions.
  • the load-bearing sealing element In a first functional position for vacuuming a textile floor surface, the load-bearing sealing element is raised so far that the sliding sole rests on the textile floor surface.
  • the load-bearing sealing element In a second functional position for cleaning hard floors, the load-bearing sealing element is lowered and supports the suction head on the hard floor surface, so that a gap is established between the edges of the suction mouth and the hard floor surface.
  • the suction channel can be connected to the suction head in a fixed manner or pivotably about a tilt axis.
  • a suction nozzle for vacuum cleaner with the features described is for example DE 100 00 504 C2 known.
  • the known suction nozzle can be used universally on hard floors and textile floor surfaces and additionally has a polishing plate with a soft covering.
  • the polishing plate is in a polishing position by means of a separate adjustment stroke extendable. In the polishing position, only the polishing plate rests on the hard floor to be cleaned and the suction nozzle is supported on the floor side by means of the polishing plate.
  • a roller which is provided at the rear end of the suction pipe connection piece and supports the suction nozzle when vacuuming textile floor surfaces and when vacuuming hard floors, no longer comes into contact with the floor when the polishing plate is extended into the polishing position.
  • the DE 202 00 871 U1 also relates to a suction nozzle for vacuum cleaner with the features described above.
  • the suction nozzle has an additional and separately switchable assembly with a vertically adjustable functional element.
  • the functional element is equipped with a floor covering that is matched to an additional function, which can consist, for example, of angled velor to improve fiber absorption, soft bristles to freshen up carpets, a polishing felt to polish smooth floors or hard bristles to remove stuck dirt.
  • Known suction nozzle for vacuum cleaner has in addition to the features described above, a separately switchable additional device for vacuuming coarse dirt.
  • a floor clearance of more than 2 mm can be set between the floor surface to be cleaned and a front strip which has already been extended for vacuuming smooth floors.
  • the suction head has support rollers in the area of the sliding sole, for example, which can be adjusted vertically. By extending the support rollers, the suction head can be raised to a higher level, so that there is such a large distance between the extended front strip and the floor surface that coarse dirt can be run over when the suction nozzle moves forward and gets under the suction head, where it comes from Air flow is detected and transported away through the suction channel.
  • US 3,821,831 Known suction nozzle has a carrier equipped with two sealing elements, which is vertically adjustable between three functional positions. Two functional positions are intended for vacuuming deep-pile and low-pile carpets. In a third functional position, the suction head can be used on hard floor surfaces, a distinction not being made between tiled hard floor surfaces and smooth, non-jointed hard floor surfaces.
  • Another suction nozzle for cylinder vacuum cleaners, whose sealing elements can be adjusted vertically in several functional positions is out US 4,638,526 known.
  • the well-known suction nozzle can be used universally on textile coverings and hard floors. Different functional positions of the carrier are provided for use on hard floors in order to be able to optimally pick up finely divided dirt particles and coarse / fibrous dirt particles. Furthermore, the sliding resistance on hard floor surfaces should be changeable.
  • a vacuum cleaner nozzle according to the above concept of claim 1 is from EP 0 158 145 A1 known.
  • a suction nozzle with the features described above can be used universally on hard floors and textile floor surfaces. However, a good cleaning result on different floor surfaces presupposes that a high flow velocity of the sucked-in air occurs at the suction mouth edges. This condition can be easily met if the suction nozzle is operated together with a powerful suction device, which has a suction fan with an electrical power consumption of more than 1000 watts. If a suction device with a less powerful suction fan is used, this can lead to a significant deterioration in the suction properties of the nozzle.
  • the deterioration is particularly pronounced the suction properties on hard floors when the suction nozzle is used in conjunction with a low-performance suction device for both vacuuming smooth floor surfaces and vacuuming tiled floor surfaces.
  • Tiled floor surfaces are understood to mean hard floors that are penetrated by joints.
  • the invention has for its object to provide a suction nozzle for canister vacuum cleaners which can be used universally both on textile floor surfaces and on hard floors and which, when operated with a suction device which has a suction fan with an electrical power consumption of less than 900 watts, is jointed or uneven hard floors as well as on smooth hard floor surfaces has good suction properties and absorbs dry, finely divided dirt particles well.
  • the object of the invention and solution to this problem is the use of a suction nozzle which can be connected to a vacuum cleaner according to claim 1.
  • the invention relates to a suction nozzle for vacuum cleaner with the features described above.
  • the suction nozzle has at least one load-bearing sealing element which is fastened to a vertically adjustable support.
  • the load-bearing sealing element In the functional position for cleaning hard floors, the load-bearing sealing element is lowered and supports the suction head on the hard floor surface, so that there is a gap between the suction mouth edges of the hard floor surface.
  • the gap between the suction mouth edges and the hard floor surface is adjustable between two preset values which are defined differently for a tiled floor surface and for a non-jointed smooth floor surface.
  • the default values are adapted to different types of hard floor surfaces. It is important to ensure that there is a high flow velocity at the suction mouth edges for each floor type.
  • the joints form recesses on a tiled floor surface, so that the distance to the edge of the suction mouth is greater than the distance between the edge of the suction mouth and the tile surface. This reduces the flow velocity of the incoming air at the edge of the suction mouth in the area of a joint.
  • a smaller distance between the suction mouth edges and the floor surface should be aimed for compared to smooth floor surfaces.
  • the suction nozzle with similarly good suction properties can also be used on other uneven hard floor surfaces.
  • the vertical adjustment of the carrier can be a linear lifting movement or a pivoting movement with a vertical movement component.
  • the invention assumes that the supporting sealing element for suctioning hard floor surfaces on the underside of the suction nozzle protrudes further than the edges of the suction mouth.
  • the gap between the suction mouth edges and the hard floor surface is adjusted between two differently specified default values, depending on the structure of the hard floor surface.
  • the distance from the floor is adjustable according to the invention by a vertical adjustment of the supporting sealing element and by a vertical adjustment of the suction mouth edges.
  • a smaller gap is set between the suction mouth edges and the hard floor surface for vacuuming tiled floor surfaces or uneven hard floor surfaces by means of a vertical adjustment of the supporting sealing element and the suction mouth edges than for vacuuming non-jointed smooth floors.
  • the invention provides that only one switching element is provided on the suction nozzle and that the switching element has three functional positions for vacuuming a textile floor surface, a tiled floor surface and an unjointed smooth floor.
  • the suction head of the suction nozzle When vacuuming hard floors, the suction head of the suction nozzle is supported on the supporting and sealing elements, a gap being created between the edges of the suction mouth and the floor surface. This gap is changed by actuating the switching element, the change in the gap distance taking into account the type of hard floor surface.
  • the load-bearing sealing element When vacuuming textile floor surfaces, the load-bearing sealing element is raised so far that the sliding sole rests on the textile floor surface and the edges of the suction mouth are immersed in the pile of the textile floor covering.
  • the suction air flows through the textile fibers of the floor covering and then flows into the suction slot at a high flow rate on the underside of the edges of the suction mouth.
  • Two supporting sealing elements are preferably attached to the carrier and are arranged in the suction direction in front of and behind the suction mouth.
  • the load-bearing sealing elements can in particular be designed as bristle strips.
  • the arrangement expediently comprises a front strip provided with openings on the bottom.
  • the front strip can be designed as a bristle strip or consists, for example, of a foam material, with notches on the underside for the entry of suction air. It is also possible to use a rubber lip as a front strip.
  • the Fig. 1 and 2 show in a sectional view and in a bottom view of a suction nozzle for vacuum cleaner.
  • the basic structure of the suction nozzle includes a suction head 1, a suction pipe connection piece 2, which is pivotally connected to a suction channel 4 of the suction head 1 about a pivot axis 3, a sliding sole 5, which has at least one suction mouth 7 delimited on the underside by suction mouth edges 6, an arrangement of sealing elements 8, 9 with at least one load-bearing sealing element 8, which is fastened to a vertically adjustable support 10, and a switching element 11 accessible on the suction head 1 for vertical adjustment of the support 10 between at least two functional positions A, B or C.
  • the load-bearing sealing element 8 is shown in FIG a first functional position A for cleaning textile floor surfaces raised so far that the sliding sole 5 rests on the textile floor surface.
  • a second functional position B the supporting sealing element 8 is lowered for cleaning hard floors and supports the suction head 1 on the hard floor surface, so that a gap s is established between the suction mouth edges 6 and the hard floor surface.
  • an air-permeable and / or apertured front strip 8 is provided on the carrier 10 in the suction direction in front of the suction mouth, and a further sealing element 9 is arranged in the working direction behind the suction mouth, for example in the form of a bristle strip or a flexible rubber lip.
  • a sealing element can also be provided on the narrow sides of the suction head, which completely or partially seals the area between the front strip 8 and the sealing element 9 on the underside of the suction head and reduces air entry at the ends of the suction mouth.
  • the suction nozzle also has a rear roller 12.
  • the functional positions of the suction nozzle for vacuuming textile floor surfaces A and for vacuuming hard floors B, C are in the Fig. 3 shown schematically.
  • the sealing elements 8, 9 are raised so far that the sliding sole 5 rests on the textile floor surface.
  • the Fig. 3 shows two functional positions B, C for vacuuming hard floors.
  • the sealing elements 8, 9 project further on the underside of the suction nozzle than the suction mouth edges 6 and support the suction head 1 on the hard floor surface, so that a gap s is established between the suction mouth edges 6 and the hard floor surface.
  • the gap s can be adjusted between two default values that are set differently for tiled floor surfaces and for non-jointed smooth floor surfaces.
  • FIG. 3 shows the gap height s 1 in the functional position B for vacuuming non-jointed smooth floor surface and the gap height s 2 in the functional position C for vacuuming a tiled floor surface.
  • a comparative analysis of the functional positions B, C reveals that a smaller gap s 2 is provided between the suction mouth edges 6 and the hard floor surface for vacuuming a tiled floor surface than for vacuuming non-jointed smooth floors (gap s 1 ).
  • the suction nozzle has only one switching element 11, which has three functional positions A, B, C for vacuuming a textile floor surface, a tiled floor surface and an unjointed smooth floor.
  • An embodiment not according to the invention is in the Fig. 4 shown.
  • the sliding sole 5 is arranged to be vertically adjustable and can be adjusted vertically by means of the switching element 11 between a functional position A for vacuuming textile floor surfaces and a functional position B or C for vacuuming hard floors.
  • an adjusting device 13 with a selector switch 14 for correcting the position of the sliding sole 5 is provided between a functional position B for smooth floors and a functional position C for tiled floor surfaces.
  • the adjusting device 13 expediently has a device which reduces a long adjusting path of the selector switch 14 into a short adjusting path of an actuator 15 acting on the sliding sole 5. Any constructive designs for reducing a linear travel path or a travel path by an angle of rotation should be recorded.
  • the device 16 has a ramp.
  • a toggle lever arrangement or a kinematics with a toggle also represent advantageous structural configurations of the device 16.
  • the suction nozzle according to the invention can be used universally on textile floor surfaces and hard floors. It enables effective vacuuming of smooth floor surfaces and tiled floor surfaces is similar to uneven hard floor surfaces and is designed for suction devices that have a low-performance suction fan.
  • the suction nozzle shown in the figures can be operated in particular in combination with a suction device which has a suction fan with an electrical power consumption of less than 900 watts.

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

Description

Die Erfindung betrifft die Verwendung einer an einen Bodenstaubsauger anschließbaren Saugdüse zum Saugen einer textilen Bodenfläche, einer gefliesten Hartbodenfläche und einer ungefugten glatten Hartbodenfläche.The invention relates to the use of a suction nozzle which can be connected to a floor vacuum cleaner for vacuuming a textile floor surface, a tiled hard floor surface and an unauthorized smooth hard floor surface.

Die der Erfindung zugrundeliegende Saugdüse umfasst einen Saugkopf, ein Saugrohranschlussstück, welches um eine Schwenkachse an einen Saugkanal des Saugkopfes schwenkbeweglich angeschlossen ist, eine Gleitsohle, die mindestens einen unterseitig von Saugmundkanten begrenzten Saugmund aufweist, zumindest ein tragendes Dichtelement, das an einem vertikal verstellbaren Träger befestigt ist, und ein am Saugkopf zugängliches Schaltelement zur Vertikalverstellung des Trägers zwischen zumindest zwei Funktionsstellungen. Das tragende Dichtelement ist in einer ersten Funktionsstellung zum Saugen einer textilen Bodenfläche so weit angehoben, dass die Gleitsohle auf der textilen Bodenfläche aufliegt. In einer zweiten Funktionsstellung zum Reinigen von Hartböden ist das tragende Dichtelement abgesenkt und stützt den Saugkopf auf der Hartbodenfläche ab, so dass sich ein Spalt zwischen den Saugmundekanten und der Hartbodenfläche einstellt. Der Saugkanal kann mit dem Saugkopf fest oder um eine Kippachse schwenkbeweglich verbunden sein.The suction nozzle on which the invention is based comprises a suction head, a suction pipe connection piece which is pivotably connected to a suction channel of the suction head about a pivot axis, a sliding sole which has at least one suction mouth delimited on the underside by suction mouth edges, at least one load-bearing sealing element which is fastened to a vertically adjustable support is, and a switching element accessible on the suction head for vertical adjustment of the carrier between at least two functional positions. In a first functional position for vacuuming a textile floor surface, the load-bearing sealing element is raised so far that the sliding sole rests on the textile floor surface. In a second functional position for cleaning hard floors, the load-bearing sealing element is lowered and supports the suction head on the hard floor surface, so that a gap is established between the edges of the suction mouth and the hard floor surface. The suction channel can be connected to the suction head in a fixed manner or pivotably about a tilt axis.

Eine Saugdüse für Bodenstaubsauger mit den beschriebenen Merkmalen ist beispielsweise aus DE 100 00 504 C2 bekannt. Die bekannte Saugdüse ist universell auf Hartböden und textilen Bodenflächen einsetzbar und weist zusätzlich eine Polierplatte mit einem weichen Belag auf. Zur Bearbeitung von Glattböden ist die Polierplatte durch einen separaten Stellhub in eine Polierstellung ausfahrbar. In der Polierstellung liegt nur die Polierplatte auf dem zu reinigenden Hartboden auf und ist die Saugdüse mittels der Polierplatte bodenseitig abgestützt. Eine Laufrolle, die am rückwärtigen Ende des Saugrohranschlussstückes vorgesehen ist und die Saugdüse beim Saugen textiler Bodenflächen und beim Saugen von Hartböden abstützt, hat keinen Bodenkontakt mehr, wenn die Polierplatte in die Polierstellung ausgefahren ist.A suction nozzle for vacuum cleaner with the features described is for example DE 100 00 504 C2 known. The known suction nozzle can be used universally on hard floors and textile floor surfaces and additionally has a polishing plate with a soft covering. To process smooth floors, the polishing plate is in a polishing position by means of a separate adjustment stroke extendable. In the polishing position, only the polishing plate rests on the hard floor to be cleaned and the suction nozzle is supported on the floor side by means of the polishing plate. A roller, which is provided at the rear end of the suction pipe connection piece and supports the suction nozzle when vacuuming textile floor surfaces and when vacuuming hard floors, no longer comes into contact with the floor when the polishing plate is extended into the polishing position.

Die DE 202 00 871 U1 betrifft ebenfalls eine Saugdüse für Bodenstaubsauger mit den eingangs beschriebenen Merkmalen. Die Saugdüse weist eine zusätzliche und separat schaltbare Baugruppe mit einem vertikal verstellbaren Funktionselement auf. Das Funktionselement ist mit einem auf eine Zusatzfunktion abgestimmten bodenseitigen Belag ausgestattet, der beispielsweise aus einem Schrägvelours zur Verbesserung der Faseraufnahme, weichen Borsten zur Florerfrischung von Teppichen, einem Polierfilz zum Polieren von Glattböden oder harten Borsten zur Entfernung von festsitzendem Schmutz bestehen kann.The DE 202 00 871 U1 also relates to a suction nozzle for vacuum cleaner with the features described above. The suction nozzle has an additional and separately switchable assembly with a vertically adjustable functional element. The functional element is equipped with a floor covering that is matched to an additional function, which can consist, for example, of angled velor to improve fiber absorption, soft bristles to freshen up carpets, a polishing felt to polish smooth floors or hard bristles to remove stuck dirt.

Eine aus DE 10 2008 012 889 B4 bekannte Saugdüse für Bodenstaubsauger weist neben den eingangs beschriebenen Merkmalen eine separat schaltbare Zusatzeinrichtung zum Saugen von Grobschmutz auf. Mittels dieser Zusatzeinrichtung ist ein zwischen der zu reinigenden Bodenfläche und einem zum Saugen glatter Böden bereits ausgefahrenen Frontstreifen ein Bodenabstand von mehr als 2 mm einstellbar. Der Saugkopf weist beispielsweise im Bereich der Gleitsohle Stützrollen auf, die vertikal verstellt werden können. Durch Ausfahren der Stützrollen ist der Saugkopf auf ein höheres Niveau anhebbar, so dass sich zwischen dem ausgefahrenen Frontstreifen und der Bodenfläche ein so großer Abstand einstellt, dass grober Schmutz bei einer Vorwärtsbewegung der Saugdüse überfahren werden kann und unter den Saugkopf gelangt, wo er von der Luftströmung erfasst und durch den Saugkanal abtransportiert wird.One out DE 10 2008 012 889 B4 Known suction nozzle for vacuum cleaner has in addition to the features described above, a separately switchable additional device for vacuuming coarse dirt. By means of this additional device, a floor clearance of more than 2 mm can be set between the floor surface to be cleaned and a front strip which has already been extended for vacuuming smooth floors. The suction head has support rollers in the area of the sliding sole, for example, which can be adjusted vertically. By extending the support rollers, the suction head can be raised to a higher level, so that there is such a large distance between the extended front strip and the floor surface that coarse dirt can be run over when the suction nozzle moves forward and gets under the suction head, where it comes from Air flow is detected and transported away through the suction channel.

Eine aus US 3 821 831 bekannte Saugdüse weist einen mit zwei Dichtungselementen bestückten Träger auf, welcher zwischen drei Funktionsstellungen vertikal verstellbar ist. Zwei Funktionsstellungen sind zum Saugen hochfloriger und niedrigfloriger Teppichbeläge vorgesehen. In einer dritten Funktionsstellung kann der Saugkopf auf Hartbodenflächen eingesetzt werden, wobei eine Unterscheidung zwischen gefliesten Hartbodenflächen und glatten ungefugten Hartbodenflächen nicht gemacht wird.
Eine weitere Saugdüse für Bodenstaubsauger, deren Dichtungselemente in mehreren Funktionsstellungen vertikal verstellt werden kann, ist aus US 4 638 526 bekannt. Die bekannte Saugdüse ist universell auf textilen Belägen und Hartböden einsetzbar. Für den Einsatz auf Hartböden sind unterschiedliche Funktionsstellungen des Trägers vorgesehen, um feinteilige Schmutzpartikel und grobe / faserförmige Schmutzpartikel optimal aufnehmen zu können. Ferner soll der Gleitwiderstand auf Hartbodenflächen veränderbar sein.One out US 3,821,831 Known suction nozzle has a carrier equipped with two sealing elements, which is vertically adjustable between three functional positions. Two functional positions are intended for vacuuming deep-pile and low-pile carpets. In a third functional position, the suction head can be used on hard floor surfaces, a distinction not being made between tiled hard floor surfaces and smooth, non-jointed hard floor surfaces.
Another suction nozzle for cylinder vacuum cleaners, whose sealing elements can be adjusted vertically in several functional positions, is out US 4,638,526 known. The well-known suction nozzle can be used universally on textile coverings and hard floors. Different functional positions of the carrier are provided for use on hard floors in order to be able to optimally pick up finely divided dirt particles and coarse / fibrous dirt particles. Furthermore, the sliding resistance on hard floor surfaces should be changeable.

Eine Staubsaugerdüse gemäß dem obigen Begriff des Patentanspruches 1 ist aus EP 0 158 145 A1 bekannt.A vacuum cleaner nozzle according to the above concept of claim 1 is from EP 0 158 145 A1 known.

Eine Saugdüse mit den eingangs beschriebenen Merkmalen ist universell auf Hartböden und textilen Bodenflächen einsetzbar. Ein gutes Reinigungsergebnis auf unterschiedlichen Bodenflächen setzt allerdings voraus, dass sich an den Saugmundkanten eine hohe Strömungsgeschwindigkeit der angesaugten Luft einstellt. Diese Bedingung lässt sich unproblematisch einhalten, wenn die Saugdüse zusammen mit einem leistungsstarken Sauggerät betrieben wird, welches ein Sauggebläse mit einer elektrischen Leistungsaufnahme von mehr als 1000 Watt aufweist. Wenn ein Sauggerät mit einem leistungsschwächeren Sauggebläse eingesetzt wird, kann dies zu einer signifikanten Verschlechterung der Saugeigenschaften der Düse führen. Besonders ausgeprägt ist die Verschlechterung der Saugeigenschaften auf Hartböden, wenn die Saugdüse in Verbindung mit einem leistungsschwachen Sauggerät sowohl zum Saugen von glatten Bodenflächen als auch zum Saugen von gefliesten Bodenflächen eingesetzt wird. Unter gefliesten Bodenflächen werden Hartböden verstanden, die von Fugen durchsetzt sind.A suction nozzle with the features described above can be used universally on hard floors and textile floor surfaces. However, a good cleaning result on different floor surfaces presupposes that a high flow velocity of the sucked-in air occurs at the suction mouth edges. This condition can be easily met if the suction nozzle is operated together with a powerful suction device, which has a suction fan with an electrical power consumption of more than 1000 watts. If a suction device with a less powerful suction fan is used, this can lead to a significant deterioration in the suction properties of the nozzle. The deterioration is particularly pronounced the suction properties on hard floors when the suction nozzle is used in conjunction with a low-performance suction device for both vacuuming smooth floor surfaces and vacuuming tiled floor surfaces. Tiled floor surfaces are understood to mean hard floors that are penetrated by joints.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine sowohl auf textilen Bodenflächen als auch auf Hartböden universell einsetzbare Saugdüse für Bodenstaubsauger anzugeben, die beim Betrieb mit einem Sauggerät, welches ein Sauggebläse mit einer elektrischen Leistungsaufnahme von weniger als 900 Watt aufweist, sowohl auf gefugten oder unebenen Hartböden als auch auf glatten Hartbodenflächen gute Saugeigenschaften aufweist und trockene, feinteilige Schmutzpartikel gut aufnimmt.Against this background, the invention has for its object to provide a suction nozzle for canister vacuum cleaners which can be used universally both on textile floor surfaces and on hard floors and which, when operated with a suction device which has a suction fan with an electrical power consumption of less than 900 watts, is jointed or uneven hard floors as well as on smooth hard floor surfaces has good suction properties and absorbs dry, finely divided dirt particles well.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist die Verwendung einer an einen Bodenstaubsauger anschließbaren Saugdüse nach Anspruch 1.The object of the invention and solution to this problem is the use of a suction nozzle which can be connected to a vacuum cleaner according to claim 1.

Die Erfindung bezieht sich auf eine Saugdüse für Bodenstaubsauger mit den eingangs beschriebenen Merkmalen. Die Saugdüse weist zumindest ein tragendes Dichtelement auf, das an einem vertikal verstellbaren Träger befestigt ist. In der Funktionsstellung zum Reinigen von Hartböden ist das tragende Dichtelement abgesenkt und stützt den Saugkopf auf der Hartbodenfläche ab, so dass sich ein Spalt zwischen den Saugmundkanten der Hartbodenfläche einstellt. Erfindungsgemäß ist der Spalt zwischen den Saugmundkanten und der Hartbodenfläche zwischen zwei für eine geflieste Bodenfläche und für eine ungefugte glatte Bodenfläche unterschiedlich festgelegten Vorgabewerten verstellbar. Die Vorgabewerte sind an unterschiedliche Arten von Hartbodenflächen angepasst. Dabei ist darauf zu achten, dass sich bei jedem Bodentyp an den Saugmundkanten eine hohe Strömungsgeschwindigkeit einstellt. Bei einer gefliesten Bodenfläche bilden die Fugen Vertiefungen, so dass der Abstand zur Saugmundkante dort größer ist als der Abstand zwischen der Saugmundkante und der Fliesenoberfläche. Dadurch sinkt die Strömungsgeschwindigkeit der einströmenden Luft an der Saugmundkante im Bereich einer Fuge. Um das Lösen von Schmutzpartikeln und das Mitführen von Schmutzpartikeln im Saugluftstrom auch im Bereich der Fugen gewährleisten zu können, ist im Vergleich zu glatten Bodenoberflächen ein geringerer Abstand der Saugmundkanten von der Bodenfläche anzustreben. In der Funktionsstellung für geflieste Bodenflächen kann die Saugdüse mit ähnlich guten Saugeigenschaften auch auf sonstigen unebenen Hartbodenflächen eingesetzt werden.The invention relates to a suction nozzle for vacuum cleaner with the features described above. The suction nozzle has at least one load-bearing sealing element which is fastened to a vertically adjustable support. In the functional position for cleaning hard floors, the load-bearing sealing element is lowered and supports the suction head on the hard floor surface, so that there is a gap between the suction mouth edges of the hard floor surface. According to the invention, the gap between the suction mouth edges and the hard floor surface is adjustable between two preset values which are defined differently for a tiled floor surface and for a non-jointed smooth floor surface. The default values are adapted to different types of hard floor surfaces. It is important to ensure that there is a high flow velocity at the suction mouth edges for each floor type. at The joints form recesses on a tiled floor surface, so that the distance to the edge of the suction mouth is greater than the distance between the edge of the suction mouth and the tile surface. This reduces the flow velocity of the incoming air at the edge of the suction mouth in the area of a joint. In order to be able to guarantee the loosening of dirt particles and the entrainment of dirt particles in the suction air flow also in the area of the joints, a smaller distance between the suction mouth edges and the floor surface should be aimed for compared to smooth floor surfaces. In the functional position for tiled floor surfaces, the suction nozzle with similarly good suction properties can also be used on other uneven hard floor surfaces.

Die Vertikalverstellung des Trägers kann eine lineare Hubbewegung oder eine Schwenkbewegung mit einer vertikalen Bewegungskomponente sein.The vertical adjustment of the carrier can be a linear lifting movement or a pivoting movement with a vertical movement component.

Die Erfindung setzt voraus, dass das tragende Dichtelement zum Saugen von Hartbodenflächen an der Unterseite der Saugdüse weiter vorsteht als die Saugmundkanten. Der Spalt zwischen den Saugmundkanten und der Hartbodenfläche wird erfindungsgemäß zwischen zwei unterschiedlich festgelegten Vorgabewerten verstellt, und zwar in Abhängigkeit der Struktur der Hartbodenfläche. Der Bodenabstand ist erfindungsgemäß verstellbar durch eine Vertikalverstellung des tragenden Dichtelementes und durch eine Vertikalverstellung der Saugmundkanten. Erfindungsgemäß wird zum Saugen von gefliesten Bodenflächen bzw. unebenen Hartbodenflächen durch eine Vertikalverstellung des tragenden Dichtelementes und der Saugmundkanten ein kleinerer Spalt zwischen den Saugmundkanten und der Hartbodenfläche eingestellt als zum Saugen ungefugter Glattböden.The invention assumes that the supporting sealing element for suctioning hard floor surfaces on the underside of the suction nozzle protrudes further than the edges of the suction mouth. According to the invention, the gap between the suction mouth edges and the hard floor surface is adjusted between two differently specified default values, depending on the structure of the hard floor surface. The distance from the floor is adjustable according to the invention by a vertical adjustment of the supporting sealing element and by a vertical adjustment of the suction mouth edges. According to the invention, a smaller gap is set between the suction mouth edges and the hard floor surface for vacuuming tiled floor surfaces or uneven hard floor surfaces by means of a vertical adjustment of the supporting sealing element and the suction mouth edges than for vacuuming non-jointed smooth floors.

Die Erfindung sieht vor, dass an der Saugdüse nur ein Schaltelement vorgesehen ist und dass das Schaltelement drei Funktionsstellungen zum Saugen einer textilen Bodenfläche, einer gefliesten Bodenfläche und eines ungefugten Glattbodens aufweist.The invention provides that only one switching element is provided on the suction nozzle and that the switching element has three functional positions for vacuuming a textile floor surface, a tiled floor surface and an unjointed smooth floor.

Beim Saugen von Hartböden ist der Saugkopf der Saugdüse an den Trag- und Dichtelementen abgestützt, wobei sich zwischen den Saugmundkanten und der Bodenfläche ein Spalt einstellt. Dieser Spalt wird durch eine Betätigung des Schaltelementes verändert, wobei die Änderung des Spaltabstandes der Art der Hartbodenfläche Rechnung trägt. Beim Saugen textiler Bodenflächen wird das tragende Dichtelement so weit angehoben, dass die Gleitsohle auf der textilen Bodenfläche aufliegt und die Saugmundkanten in den Flor des textilen Bodenbelages eintauchen. Die Saugluft durchströmt die textilen Fasern des Bodenbelages und strömt dann mit hoher Strömungsgeschwindigkeit an der Unterseite der Saugmundkanten in den Saugschlitz.When vacuuming hard floors, the suction head of the suction nozzle is supported on the supporting and sealing elements, a gap being created between the edges of the suction mouth and the floor surface. This gap is changed by actuating the switching element, the change in the gap distance taking into account the type of hard floor surface. When vacuuming textile floor surfaces, the load-bearing sealing element is raised so far that the sliding sole rests on the textile floor surface and the edges of the suction mouth are immersed in the pile of the textile floor covering. The suction air flows through the textile fibers of the floor covering and then flows into the suction slot at a high flow rate on the underside of the edges of the suction mouth.

Am Träger sind vorzugsweise zwei tragende Dichtelemente befestigt, die in Saugrichtung vor und hinter dem Saugmund angeordnet sind. Die tragenden Dichtelemente können insbesondere als Borstenstreifen ausgebildet sein. Die Anordnung umfasst zweckmäßig einen mit bodenseitigen Öffnungen versehenen Frontstreifen. Der Frontstreifen kann als Borstenstreifen ausgebildet sein oder besteht beispielsweise aus einem Schaumstoffmaterial, wobei an der Unterseite Ausklinkungen für den Eintritt von Saugluft vorgesehen sind. Auch die Verwendung einer Gummilippe als Frontstreifen ist möglich.Two supporting sealing elements are preferably attached to the carrier and are arranged in the suction direction in front of and behind the suction mouth. The load-bearing sealing elements can in particular be designed as bristle strips. The arrangement expediently comprises a front strip provided with openings on the bottom. The front strip can be designed as a bristle strip or consists, for example, of a foam material, with notches on the underside for the entry of suction air. It is also possible to use a rubber lip as a front strip.

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

Fig. 1
einen Schnitt durch eine erfindungsgemäße Saugdüse,
Fig. 2
eine Unteransicht der in Fig. 1 dargestellten Saugdüse,
Fig. 3
einen Ausschnitt aus der Saugdüse in drei Funktionsstellungen A, B und C, und
Fig. 4
eine nicht erfindungsgemäße Saugdüse in einer frontseitigen Ansicht.
In the following, the invention is explained on the basis of a drawing illustrating only one exemplary embodiment. They show schematically
Fig. 1
2 shows a section through a suction nozzle according to the invention,
Fig. 2
a bottom view of the in Fig. 1 shown suction nozzle,
Fig. 3
a section of the suction nozzle in three functional positions A, B and C, and
Fig. 4
a suction nozzle not according to the invention in a front view.

Die Fig. 1 und 2 zeigen in einer Schnittdarstellung sowie in einer Unteransicht eine Saugdüse für Bodenstaubsauger. Zum grundsätzlichen Aufbau der Saugdüse gehören ein Saugkopf 1, ein Saugrohranschlussstück 2, welches um eine Schwenkachse 3 schwenkbeweglich an einen Saugkanal 4 des Saugkopfes 1 angeschlossen ist, eine Gleitsohle 5, die mindestens einen unterseitig von Saugmundkanten 6 begrenzten Saugmund 7 aufweist, eine Anordnung von Dichtelementen 8, 9 mit zumindest einem tragenden Dichtelement 8, welches, an einem vertikal verstellbaren Träger 10 befestigt ist, sowie ein am Saugkopf 1 zugängliches Schaltelement 11 zur Vertikalverstellung des Trägers 10 zwischen zumindest zwei Funktionsstellungen A, B oder C. Das tragende Dichtelement 8 ist in einer ersten Funktionsstellung A zum Reinigen von textilen Bodenflächen so weit angehoben, dass die Gleitsohle 5 auf der textilen Bodenfläche aufliegt. In einer zweiten Funktionsstellung B ist das tragende Dichtelement 8 zum Reinigen von Hartböden abgesenkt und stützt den Saugkopf 1 an der Hartbodenfläche ab, so dass sich ein Spalt s zwischen den Saugmundkanten 6 und der Hartbodenfläche einstellt. Im Ausführungsbeispiel ist an dem Träger 10 in Saugrichtung vor dem Saugmund ein luftdurchlässiger und/oder mit Öffnungen versehener Frontstreifen 8 als tragendes Dichtelement und ist in Arbeitsrichtung hinter dem Saugmund ein weiteres Dichtelement 9 angeordnet, z.B. in Form eines Borstenstreifens oder einer flexiblen Gummilippe. An den Schmalseiten des Saugkopfes kann ebenfalls jeweils ein Dichtelement vorgesehen sein, welches den Bereich zwischen dem Frontstreifen 8 und dem Dichtlement 9 an der Unterseite des Saugkopfes ganz oder teilweise abdichtet und einen Lufteintritt an den Enden des Saugmundes reduziert. Im Ausführungsbeispiel weist die Saugdüse ferner eine rückwärtige Laufrolle 12 auf.The Fig. 1 and 2 show in a sectional view and in a bottom view of a suction nozzle for vacuum cleaner. The basic structure of the suction nozzle includes a suction head 1, a suction pipe connection piece 2, which is pivotally connected to a suction channel 4 of the suction head 1 about a pivot axis 3, a sliding sole 5, which has at least one suction mouth 7 delimited on the underside by suction mouth edges 6, an arrangement of sealing elements 8, 9 with at least one load-bearing sealing element 8, which is fastened to a vertically adjustable support 10, and a switching element 11 accessible on the suction head 1 for vertical adjustment of the support 10 between at least two functional positions A, B or C. The load-bearing sealing element 8 is shown in FIG a first functional position A for cleaning textile floor surfaces raised so far that the sliding sole 5 rests on the textile floor surface. In a second functional position B, the supporting sealing element 8 is lowered for cleaning hard floors and supports the suction head 1 on the hard floor surface, so that a gap s is established between the suction mouth edges 6 and the hard floor surface. In the exemplary embodiment, an air-permeable and / or apertured front strip 8 is provided on the carrier 10 in the suction direction in front of the suction mouth, and a further sealing element 9 is arranged in the working direction behind the suction mouth, for example in the form of a bristle strip or a flexible rubber lip. A sealing element can also be provided on the narrow sides of the suction head, which completely or partially seals the area between the front strip 8 and the sealing element 9 on the underside of the suction head and reduces air entry at the ends of the suction mouth. In the exemplary embodiment, the suction nozzle also has a rear roller 12.

Die Funktionsstellungen der Saugdüse zum Saugen von textilen Bodenflächen A und zum Saugen von Hartböden B, C sind in der Fig. 3 schematisch dargestellt. In der Funktionsstellung A zum Reinigen einer textilen Bodenfläche sind die Dichtelemente 8, 9 so weit angehoben, dass die Gleitsohle 5 auf der textilen Bodenfläche aufliegt. Die Fig. 3 zeigt zwei Funktionsstellungen B, C zum Saugen von Hartböden. Die Dichtelemente 8, 9 stehen in diesen beiden Funktionsstellungen B, C an der Unterseite der Saugdüse weiter vor als die Saugmundkanten 6 und stützen den Saugkopf 1 an der Hartbodenfläche ab, so dass sich ein Spalt s zwischen den Saugmundkanten 6 und der Hartbodenfläche einstellt. Der Spalt s ist zwischen zwei für geflieste Bodenflächen und für ungefugte Glattbodenflächen unterschiedlich festgelegten Vorgabewerten verstellbar. Die Fig. 3 zeigt die Spalthöhe s1 in der Funktionsstellung B zum Saugen von ungefugten Glattbodenfläche und die Spalthöhe s2 in der Funktionsstellung C zum Saugen einer gefliesten Bodenfläche. Einer vergleichenden Betrachtung der Funktionsstellungen B, C entnimmt man, dass zum Saugen einer gefliesten Bodenflächen ein kleinerer Spalt s2 zwischen den Saugmundkanten 6 und der Hartbodenfläche vorgesehen ist als zum Saugen ungefugter Glattböden (Spalt s1).The functional positions of the suction nozzle for vacuuming textile floor surfaces A and for vacuuming hard floors B, C are in the Fig. 3 shown schematically. In the functional position A for cleaning a textile floor surface, the sealing elements 8, 9 are raised so far that the sliding sole 5 rests on the textile floor surface. The Fig. 3 shows two functional positions B, C for vacuuming hard floors. In these two functional positions B, C, the sealing elements 8, 9 project further on the underside of the suction nozzle than the suction mouth edges 6 and support the suction head 1 on the hard floor surface, so that a gap s is established between the suction mouth edges 6 and the hard floor surface. The gap s can be adjusted between two default values that are set differently for tiled floor surfaces and for non-jointed smooth floor surfaces. The Fig. 3 shows the gap height s 1 in the functional position B for vacuuming non-jointed smooth floor surface and the gap height s 2 in the functional position C for vacuuming a tiled floor surface. A comparative analysis of the functional positions B, C reveals that a smaller gap s 2 is provided between the suction mouth edges 6 and the hard floor surface for vacuuming a tiled floor surface than for vacuuming non-jointed smooth floors (gap s 1 ).

Im Rahmen der Erfindung liegt es, dass die Saugdüse nur ein Schaltelement 11 aufweist, welches drei Funktionsstellungen A, B, C zum Saugen einer textilen Bodenfläche, einer gefliesten Bodenfläche und eines ungefugten Glattbodens aufweist. Eine nicht erfindungsgemäße Ausgestaltung ist in der Fig. 4 dargestellt.It is within the scope of the invention that the suction nozzle has only one switching element 11, which has three functional positions A, B, C for vacuuming a textile floor surface, a tiled floor surface and an unjointed smooth floor. An embodiment not according to the invention is in the Fig. 4 shown.

Im nicht erfindungsgemäßen Ausführungsbeispiel der Fig. 4 ist die Gleitsohle 5 vertikal verstellbar angeordnet und kann mittels des Schaltelementes 11 zwischen einer Funktionsstellung A zum Saugen von textilen Bodenflächen und einer Funktionsstellung B oder C zum Saugen von Hartböden vertikal verstellt werden. Zur weiteren Verstellung der Gleitsohle 5 ist eine Stellvorrichtung 13 mit einem Wahlschalter 14 zur Positionskorrektur der Gleitsohle 5 zwischen einer Funktionsstellung B für Glattböden und einer Funktionsstellung C für geflieste Bodenflächen vorgesehen. Die Stellvorrichtung 13 weist zweckmäßig eine Einrichtung auf, welche einen langen Stellweg des Wahlschalters 14 in einen kurzen Stellweg eines auf die Gleitsohle 5 wirkenden Stellgliedes 15 untersetzt. Beliebige konstruktive Ausgestaltungen zur Untersetzung eines linearen Stellweges oder eines Stellweges um einen Drehwinkel sollen erfasst sein. Im Ausführungsbeispiel weist die Einrichtung 16 eine Rampe auf. Auch eine Kniehebelanordnung oder eine Kinematik mit einem Knebel stellen vorteilhafte konstruktive Ausgestaltungen der Einrichtung 16 dar.In the non-inventive embodiment of the Fig. 4 the sliding sole 5 is arranged to be vertically adjustable and can be adjusted vertically by means of the switching element 11 between a functional position A for vacuuming textile floor surfaces and a functional position B or C for vacuuming hard floors. For further adjustment of the sliding sole 5, an adjusting device 13 with a selector switch 14 for correcting the position of the sliding sole 5 is provided between a functional position B for smooth floors and a functional position C for tiled floor surfaces. The adjusting device 13 expediently has a device which reduces a long adjusting path of the selector switch 14 into a short adjusting path of an actuator 15 acting on the sliding sole 5. Any constructive designs for reducing a linear travel path or a travel path by an angle of rotation should be recorded. In the exemplary embodiment, the device 16 has a ramp. A toggle lever arrangement or a kinematics with a toggle also represent advantageous structural configurations of the device 16.

Die erfindungsgemäße Saugdüse ist universell auf textilen Bodenflächen und Hartböden einsetzbar. Sie ermöglicht ein wirkungsvolles Saugen von Glattbodenflächen und von gefliesten Bodenflächen ist ähnlichen unebenen Hartbodenflächen und ist auf Sauggeräte abgestimmt, die ein leistungsschwaches Sauggebläse aufweisen. Die in den Figuren dargestellte Saugdüsen kann insbesondere in Kombination mit einem Sauggerät betrieben werden, welches ein Sauggebläse mit einer elektrischen Leistungsaufnahme von weniger als 900 Watt aufweist.The suction nozzle according to the invention can be used universally on textile floor surfaces and hard floors. It enables effective vacuuming of smooth floor surfaces and tiled floor surfaces is similar to uneven hard floor surfaces and is designed for suction devices that have a low-performance suction fan. The suction nozzle shown in the figures can be operated in particular in combination with a suction device which has a suction fan with an electrical power consumption of less than 900 watts.

Claims (2)

  1. Use of a suction nozzle, which can be connected to a floor vacuum cleaner, comprising
    a suction head (1),
    a suction pipe connecting piece (2), which is connected to a suction duct (4) of the suction head (1) so as to be pivotably movable about a pivot axis (3),
    a sliding sole (5), which has at least one suction mouth (7), which is limited on the underside by suction mouth edges (6),
    at least one supporting sealing element (8), which is fastened to a vertically adjustable support (10), and a switching element (11), which can be accessed on the suction head (1), for vertically adjusting the support (10) between at least two functional positions (A, B or C),
    for vacuuming a textile floor surface, a tiled hard floor surface and an unjoined smooth hard floor surface, wherein, for vacuuming the textile floor surface, the supporting sealing element (8) is raised to such an extent by positioning the switching element (11) in a first functional position (A) that the sliding sole (5) bears on the textile floor surface, wherein, for vacuuming the hard floor surfaces, the supporting sealing element (8) is lowered by positioning the switching element (11) in a second functional position (B, C), and supports the suction head (1) on the hard floor surface, so that a gap (s) appears between the suction mouth edges (6) and the hard floor surface, characterized in that the gap (s) between the suction mouth edges (6) and the hard floor surface can be adjusted between two different default values specified for a tiled floor surface and for an unjoined smooth floor surface, and that for vacuuming a tiled hard floor surface, a smaller gap (s) than for vacuuming an unjoined smooth floor is adjusted between the suction mouth edge (6) and the hard floor surface by means of a vertical adjustment of the supporting element (8) and the suction mouth edges (6), and that the switching element (11) has three functional positions (A, B, C) for vacuuming a textile floor surface, a tiled floor surface or an unjoined smooth floor.
  2. The use of a suction nozzle according to claim 1, wherein two supporting sealing elements (8, 9) are fastened to the support (1), which are arranged upstream of and downstream from the suction mouth (7) in the suction direction.
EP15181548.7A 2014-08-25 2015-08-19 Use of a suction nozzle which can be connected to a vacuum cleaner for suction of a textile floor surface, a tiled hard floor surface and a smooth unjoined hard floor surface Active EP2989953B1 (en)

Applications Claiming Priority (1)

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DE102014112141.4A DE102014112141B4 (en) 2014-08-25 2014-08-25 Suction nozzle for vacuum cleaner

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EP2989953A1 EP2989953A1 (en) 2016-03-02
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EP (1) EP2989953B1 (en)
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Publication number Publication date
CN105455730B (en) 2019-06-18
CN105455730A (en) 2016-04-06
DE102014112141A1 (en) 2016-02-25
EP2989953A1 (en) 2016-03-02
DE102014112141B4 (en) 2018-04-26

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