EP0983742B1 - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
EP0983742B1
EP0983742B1 EP99116008A EP99116008A EP0983742B1 EP 0983742 B1 EP0983742 B1 EP 0983742B1 EP 99116008 A EP99116008 A EP 99116008A EP 99116008 A EP99116008 A EP 99116008A EP 0983742 B1 EP0983742 B1 EP 0983742B1
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EP
European Patent Office
Prior art keywords
vacuum cleaner
suction opening
support portion
displacement direction
cleaner according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99116008A
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German (de)
French (fr)
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EP0983742A2 (en
EP0983742A3 (en
Inventor
Stefan Hilgers
Frank Meyer
Bernhard Scheuren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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Publication of EP0983742A2 publication Critical patent/EP0983742A2/en
Publication of EP0983742A3 publication Critical patent/EP0983742A3/en
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Publication of EP0983742B1 publication Critical patent/EP0983742B1/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

Definitions

  • the invention relates to a vacuum cleaner according to the feature of the preamble of claim 1.
  • the invention has the object of developing a vacuum cleaner as indicated above so that advantageous flow conditions are given in the support area.
  • the support section is curved in cross-section corresponding to a wheel tread or according to a wing profile. With regard to the latter is important that the largest protrusion is only near the edge of the opening.
  • the airfoil is thus designed so that during normal forward movement of the vacuum cleaner, the rear part of the profile is forward.
  • the bottom plate is formed curved in the direction of displacement both in front of and behind the suction mouth in a cross section corresponding to a wheel tread or a wing profile.
  • the base plate having the support sections can be designed both as a metal plate and as a plastic plate. It is essential that a hard material is selected.
  • the support section on the suction mouth side merges into a bottom-parallel edge section. The latter is heightwise spaced from the support surfaces of the support sections, so that this edge section does not rest on the floor to be maintained in a sealing manner.
  • the support portions according to the invention in cross section by circular sections, in particular composite circular sections of different radii, formed, to which it is proposed that the radius of curvature corresponds to 0.25 to 2 times the Saugmundbreite in the direction of displacement.
  • the radius of curvature corresponds to 1/3 to 1/1 times the suction mouth width in the direction of displacement.
  • the ratio of the suction mouth width to the radius of curvature of the front support section in the displacement direction is approximately 2: 1 and the rear support section is approximately 1.5: 1.
  • a vertical extent of the elevation of the support portion relative to the edge portion corresponds to 1/8 to 1/2 of the radius of the support portion.
  • the curvature on the suction mouth edge opposite side of the support section on the Kochhöhungshack is continued with respect to the Saugmundrandes.
  • the support section extends at least over the length of the suction mouth measured transversely to the direction of displacement, whereby over this entire length of the suction mouth a uniform sealing of the carpet to achieve a necessary negative pressure is provided.
  • the base plate according to the invention does not have a disadvantageous effect with regard to the thread / fiber receptacle, the coarse dirt receptacle and the edge / front extraction in comparison to conventional floor plates. In addition, this is also comparable in terms of acoustics and the appearance of the goods. In the dust collection from cracks / joints an increase has been found.
  • FIG. 1 Shown and described is first with reference to Fig. 1 an attachment 1 in the form of a suction nozzle for a vacuum cleaner, not shown.
  • This attachment has on its underside a suction mouth 2, in which a suction line not shown in detail opens.
  • This suction line is flow-connected to achieve a suction air flow with an arranged in the vacuum cleaner electric motor / fan motor.
  • the bottom plate 3 - viewed in the direction of displacement VR - forms a front support section 5 and a rear support section 6, which support sections 5, 6 in a cross section in the direction of displacement VR Fig. 2 are curved according to a wheel tread.
  • the curvatures of the support sections 5 and 6 are directed towards the bottom 4, resulting in a more or less small contact surface depending on the floor covering.
  • the device 1 is supported in the region of the suction mouth 2 in carpets with low pile height in cross-section pointwise.
  • small bearing surfaces which are smaller in their extension along the direction of rotation VR than the measured in the same direction widths of the respective support section.
  • the device 1 is therefore supported only over a partial area of the entire bottom plate in the region of the suction mouth 2.
  • the support sections 5 and 6 pass on the suction mouth side in each case into a bottom-parallel edge section 7, which latter is raised above the vertex of the respective support section 5 or 6.
  • the vertical extent of this elevation u corresponds in the embodiment shown approximately one-eighth of the radius r 'of the front support section 5.
  • the bottom-parallel edge portions 7 extend above the support area on the floor to be maintained 4 and therefore do not interfere.
  • the support portions 5 and 6 extend at least over the transverse to the displacement direction VR measured length l of the suction mouth 2.
  • the two separate support sections 5 and 6 to form a uniform base plate 3 by means of the suction 2 extending webs 8 are connected.
  • the bottom plate 3 according to the invention is preferably made of a metallic material.
  • a hard plastic or the like are also conceivable.
  • the carpet 4 is well sealed to achieve the necessary negative pressure, which is counteracted by the curved support sections 5, 6 compaction of the carpet 4. This results in an improved flow around (represented by the arrows y), which has a desired increased volume flow in the region of the suction mouth 2 to improve the dust absorption result, without increasing the suction power of the vacuum cleaner.
  • the pushing force for moving the device 1 on the floor is reduced by the inventive design, the pushing force for moving the device 1 on the floor to be cared for 4, especially in medium- and high-pile carpets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The vacuum cleaner has an electric motor and a suction line opening into a suction opening (2) bounded on its lower side by a base plate (3). Supporting sections (5,6) are curved in cross-section in the direction of movement of the vacuum cleaner to form a wheel rolling surface shape.

Description

Die Erfindung betrifft einen Staubsauger nach dem Merkmal des Oberbegriffs des Anspruches 1.The invention relates to a vacuum cleaner according to the feature of the preamble of claim 1.

Bei Staubsaugern oder Vorsatzgeräten für Staubsauger in Form von Saugdüsen oder dergleichen ist es bekannt, den Saugmund unterseitig dem zu pflegenden Boden zugewandt, insbesondere in Verschieberrichtung vor- und rückseitig, durch eine Bodenplatte zu begrenzen. Derartige Bodenplatten sind in der Regel aus einem metallischen Werkstoff hergestellt. Im Zuge des Absaugens von textilen Bodenbelägen gleitet das Reinigungsgerät, insbesondere im Bereich des Saugmundes mittels der Bodenplatte über die zu reinigende Oberfläche. So ist bspw. in der deutschen Patentanmeldung 295484 ein Reinigungsgerät dargestellt, welches eine übliche, bodenparallel ausgerichtete Bodenplatte zur Begrenzung des Saugmundes aufweist.In vacuum cleaners or attachments for vacuum cleaners in the form of suction nozzles or the like, it is known that the suction mouth on the underside of the floor to be cared for, in particular in the direction of displacement front and back to limit by a bottom plate. Such floor panels are usually made of a metallic material. In the course of suction of textile floor coverings, the cleaning device slides, in particular in the region of the suction mouth, by means of the base plate over the surface to be cleaned. For example, in the German Patent Application 295484 a cleaning device shown, which has a conventional, ground parallel aligned bottom plate for limiting the suction mouth.

Zum Stand der Technik ist des Weiteren auf die DE 626079 C sowie die DE 688768 C zu verweisen.The prior art is further on the DE 626079 C as well as the DE 688768 C to refer.

Aus letzterer Schrift ist ein Staubsauger mit vorderen und hinteren Auflageabschnitten bekannt, die jedoch praktisch über die gesamte Breite des Saugmundes gleichgestaltet sind.From the latter document, a vacuum cleaner with front and rear support sections is known, but which are virtually the same shape over the entire width of the suction mouth.

Aus gehend von dem genannten Stand der Technik stellt sich der Erfindung die Aufgabe, einen Staubsauger wie eingangs angegeben so weiterzubilden, dass vorteilhafte Strömungsbedingungen im Auflagebereich gegeben sind.Starting from the cited prior art, the invention has the object of developing a vacuum cleaner as indicated above so that advantageous flow conditions are given in the support area.

Diese Aufgabe ist beim Gegenstand des Anspruches 1 gelöst, wobei darauf abgestellt ist, dass die Auflageabschnitte unterschiedlich gestaltet sind und dass der in Verschieberichtung vorne angeordnete Auflageabschnitt einen kleineren Krümmungsradius aufweist als der in Verschieberichtung hintere Auflageabschnitt, bei konstanten Maßverhältnissen über die gesamte Länge des Suagmundes.This object is achieved in the subject matter of claim 1, wherein it is geared to that the support sections are designed differently and that the front in the displacement direction arranged support portion has a smaller radius of curvature than the rear in the displacement direction support portion, at constant dimensional ratios over the entire length of Suagmundes.

Es ist eine geringe Auflagefläche im Bereich der Bodenplatte gegeben. Bei gleichbleibender Schiebekraft ist eine erhöhte Staubaufnahme gegeben. Der Auflageabschnitt ist im Querschnitt entsprechend einer Radlauffläche oder entsprechend einem Tragflügelprofil gekrümmt. Hinsichtlich letzterem ist von Bedeutung, dass die größte Vorwölbung erst nahe der Randkante der Öffnung ist. Das Tragflächenprofil ist also so ausgebildet, dass bei üblicher Vorwärtsbewegung des Staubsaugers der hintere Teil des Profils vorne ist. Durch diese im Querschnitt gekrümmte Ausbildung des Auflageabschnitts wird der Teppichboden, insbesondere bei mittel- oder hochflorigen Belägen, lediglich zur Erzielung eines nötigen Unterdruckes abgedichtet, jedoch nicht verdichtet, wodurch eine bessere Umströmung ermöglicht ist. Durch die hierdurch erzielten geringeren Verluste ist ein höherer Volumenstrom und somit eine verbesserte Staubaufnahme erreicht, dies bei gleichbleibenden oder je nach Belagart sogar verringerten Schiebekräften. Demzufolge ist die Bodenplatte in Verschieberichtung sowohl vor als auch hinter dem Saugmund in einem Querschnitt entsprechend einer Radlauffläche oder eines Tragflügelprofils gekrümmt ausgebildet. Die die Auflageabschnitte aufweisende Bodenplatte kann sowohl als Metall- als auch als Kunststoffplatte ausgebildet sein. Wesentlich hierbei ist, dass ein Hartwerkstoff gewählt ist. Zudem wird vorgeschlagen, dass der Auflageabschnitt saugmundseitig in einen bodenparallelen Randabschnitt übergeht. Letzterer ist höhenmäßig zu den Auflageflächen der Auflageabschnitte beabstandet, so dass dieser Randabschnitt nicht dichtend auf dem zu pflegenden Boden aufliegt. Somit wirkt sich dieser bodenparallele Randabschnitt nicht negativ auf die Durchströmung des Teppichbodens bzw. auf die Schiebekräfte aus. Entsprechend einer Radlauffläche oder eines Tragflächenprofils sind die Auflageabschnitte erfindungsgemäß im Querschnitt durch Kreisabschnitte, insbesondere zusammengesetzte Kreisabschnitte verschiedener Radien, gebildet, wozu vorgeschlagen wird, dass der Krümmungsradius dem 0,25- bis 2-fachen der Saugmundbreite in Verschieberichtung entspricht. Bevorzugt wird hierbei eine Ausgestaltung, bei welcher der Krümmungsradius dem 1/3- bis 1/1-fachen der Saugmundbreite in Verschieberichtung entspricht. So beträgt bspw. das Verhältnis von Saugmundbreite zum Krümmungsradius des in Verschieberichtung vorderen Auflageabschnittes etwa 2:1 und zum hinteren Auflageabschnitt etwa 1,5:1. Des Weiteren ist zur Erzielung einer verbesserten Staubaufnahme vorgesehen, daß ein vertikales Maß der Überhöhung des Auflageabschnittes gegenüber dem Randabschnitt 1/8 bis 1/2 des Radius des Auflageabschnittes entspricht. Diesbezüglich wird weiter vorgeschlagen, daß die Krümmung auf der dem Saugmundrand entgegengesetzten Seite des Auflageabschnittes über das Überhöhungsmaß bezüglich des Saugmundrandes fortgesetzt ist. Hierdurch bedingt ist sowohl in der Vorwärts-Verschieberichtung als auch in der Rückwärts-Verschieberichtung im Bereich des jeweilig vorderen Auflageabschnittes eine weiche, gleichmäßige Auflaufzone gebildet, wodurch die Schiebekräfte insbesondere bei mittel- und hochflorigen Teppichböden verringert werden. Schließlich ist vorgesehen, daß sich der Auflageabschnitt mindestens über die quer zur Verschieberichtung gemessene Länge des Saugmundes erstreckt, wodurch über diese gesamte Länge des Saugmundes eine gleichmäßige Abdichtung des Teppichbodens zur Erzielung eines nötigen Unterdruckes gegeben ist. Die erfindungsgemäße Bodenplatte wirkt sich hinsichtlich der Faden- /Faseraufnahme, der Grobschmutzaufnahme und der Rand-/Frontabsaugung im Vergleich zu herkömmlichen Bodenplatten nicht nachteilig aus. Darüber hinaus ist diese auch hinsichtlich der Akustik und des Warenbildes vergleichbar. Bei der Staubaufnahme aus Ritzen/Fugen ist eine Erhöhung festgestellt worden.There is a small contact surface in the area of the bottom plate. At the same sliding force increased dust absorption is given. The support section is curved in cross-section corresponding to a wheel tread or according to a wing profile. With regard to the latter is important that the largest protrusion is only near the edge of the opening. The airfoil is thus designed so that during normal forward movement of the vacuum cleaner, the rear part of the profile is forward. By this curved in cross section training of the support section of the carpet, especially for medium or high pile coverings, only sealed to achieve a necessary negative pressure, but not compressed, creating a better flow around is possible. As a result of the lower losses achieved as a result, a higher volume flow and thus improved dust absorption is achieved, even with constant sliding forces or, depending on the type of lining, even lower sliding forces. Accordingly, the bottom plate is formed curved in the direction of displacement both in front of and behind the suction mouth in a cross section corresponding to a wheel tread or a wing profile. The base plate having the support sections can be designed both as a metal plate and as a plastic plate. It is essential that a hard material is selected. In addition, it is proposed that the support section on the suction mouth side merges into a bottom-parallel edge section. The latter is heightwise spaced from the support surfaces of the support sections, so that this edge section does not rest on the floor to be maintained in a sealing manner. Thus, this floor-parallel edge portion does not adversely affect the flow through the carpet or on the sliding forces. Corresponding a wheel tread or an airfoil profile, the support portions according to the invention in cross section by circular sections, in particular composite circular sections of different radii, formed, to which it is proposed that the radius of curvature corresponds to 0.25 to 2 times the Saugmundbreite in the direction of displacement. In this case, an embodiment is preferred in which the radius of curvature corresponds to 1/3 to 1/1 times the suction mouth width in the direction of displacement. For example, the ratio of the suction mouth width to the radius of curvature of the front support section in the displacement direction is approximately 2: 1 and the rear support section is approximately 1.5: 1. Furthermore, it is intended to achieve an improved dust absorption, that a vertical extent of the elevation of the support portion relative to the edge portion corresponds to 1/8 to 1/2 of the radius of the support portion. In this regard, it is further proposed that the curvature on the suction mouth edge opposite side of the support section on the Überhöhungsmaß is continued with respect to the Saugmundrandes. As a result, both in the forward displacement direction and in the backward-displacement direction in the region of the respective front support portion a soft, uniform casserole zone is formed, whereby the sliding forces are reduced, especially in medium- and high-pile carpets. Finally, it is provided that the support section extends at least over the length of the suction mouth measured transversely to the direction of displacement, whereby over this entire length of the suction mouth a uniform sealing of the carpet to achieve a necessary negative pressure is provided. The base plate according to the invention does not have a disadvantageous effect with regard to the thread / fiber receptacle, the coarse dirt receptacle and the edge / front extraction in comparison to conventional floor plates. In addition, this is also comparable in terms of acoustics and the appearance of the goods. In the dust collection from cracks / joints an increase has been found.

Nachfolgend ist die Erfindung anhand der beigefügten Zeichnung, welche lediglich ein Ausführungsbeispiel darstellt, näher erläutert. Es zeigt:

Fig. 1
einen Sauggerätevorsatz für einen Staubsauger der in Rede stehenden Art;
Fig. 2
eine schematische Schnittdarstellung gemäß der Linie II-II in Fig. 1,
Fig. 3
eine Unteransicht des Gerätes gemäß Fig. 1;
Fig. 4
eine perspektivische Einzeldarstellung einer Bodenplatte des Gerätes.
The invention with reference to the accompanying drawings, which represents only one embodiment, explained in more detail. It shows:
Fig. 1
a Sauggerätevorsatz for a vacuum cleaner of the type in question;
Fig. 2
a schematic sectional view along the line II-II in Fig. 1 .
Fig. 3
a bottom view of the device according to Fig. 1 ;
Fig. 4
an individual perspective view of a bottom plate of the device.

Dargestellt und beschrieben ist zunächst mit Bezug zu Fig. 1 ein Vorsatzgerät 1 in Form einer Saugdüse für einen nicht dargestellten Staubsauger.Shown and described is first with reference to Fig. 1 an attachment 1 in the form of a suction nozzle for a vacuum cleaner, not shown.

Dieses Vorsatzgerät weist unterseitig einen Saugmund 2 auf, in welchem eine nicht näher dargestellte Saugleitung mündet.This attachment has on its underside a suction mouth 2, in which a suction line not shown in detail opens.

Diese Saugleitung ist zur Erzielung eines Saugluftstromes mit einem in dem Staubsauger angeordneten Elektromotor/Gebläsemotor strömungsverbunden.This suction line is flow-connected to achieve a suction air flow with an arranged in the vacuum cleaner electric motor / fan motor.

Wie aus der Schnittdarstellung in Fig. 2 zu erkennen, ist der Saugmund 2 in Verschieberichtung VR des Gerätes 1 sowohl vorderseitig als auch rückwärtig durch eine Bodenplatte 3 begrenzt. Über diese Bodenplatte 3 stützt sich das Gerät 1 im Ansaugbereich auf dem zu pflegenden Boden 4 ab.As from the sectional view in Fig. 2 To recognize the suction mouth 2 in the direction of displacement VR of the device 1 is limited both front side and rearward by a bottom plate 3. About this bottom plate 3, the device 1 is supported in the intake on the floor to be cared for 4.

Wie weiter aus dieser Schnittdarstellung zu erkennen, bildet die Bodenplatte 3 - in Verschieberichtung VR betrachtet - einen vorderen Auflageabschnitt 5 und einen hinteren Auflageabschnitt 6 aus, welche Auflageabschnitte 5, 6 in einem Querschnitt in Verschieberichtung VR gemäß Fig. 2 entsprechend einer Radlauffläche gekrümmt sind.As can be further seen from this sectional view, the bottom plate 3 - viewed in the direction of displacement VR - forms a front support section 5 and a rear support section 6, which support sections 5, 6 in a cross section in the direction of displacement VR Fig. 2 are curved according to a wheel tread.

Diese im Querschnitt teilkreisförmig ausgebildeten Auflageabschnitte 5 und 6 besitzen unterschiedliche Radien, wobei der Radius r' des vorderen Auflageabschnittes 5 etwa - in Verschieberichtung VR gemessen - der halben Saugmundbreite b entspricht. Der Radius r'' des hinteren Auflageabschnittes 6 entspricht in dem gezeigten Ausführungsbeispiel etwa dem 0,7fachen der Saugmundbreite b.These partial cross-sectionally shaped support sections 5 and 6 have different radii, the radius r 'of the front support section 5 approximately - in the direction of displacement VR measured - half the suction mouth width b corresponds. The radius r '' of the rear support portion 6 corresponds to about 0.7 times the Saugmundbreite b in the embodiment shown.

Die Krümmungen der Auflageabschnitte 5 und 6 sind in Richtung auf den Boden 4 gerichtet, wodurch sich je nach Bodenbelag eine mehr oder weniger kleine Auflagefläche ergibt. So stützt sich das Gerät 1 im Bereich des Saugmundes 2 bei Teppichböden mit geringer Florhöhe im Querschnitt punktweise ab. Bei Teppichböden mit mittlerer bis großer Florhöhe gemäß Fig. 2 ergeben sich kleine Auflageflächen, welche in ihrer Erstreckung längs zur Verschieberichtung VR kleiner sind als die in gleicher Richtung gemessenen Breiten des jeweiligen Auflageabschnittes. Das Gerät 1 stützt sich demzufolge nur über einen Teilbereich der gesamten Bodenplatte im Bereich des Saugmundes 2 ab.The curvatures of the support sections 5 and 6 are directed towards the bottom 4, resulting in a more or less small contact surface depending on the floor covering. Thus, the device 1 is supported in the region of the suction mouth 2 in carpets with low pile height in cross-section pointwise. For carpets with medium to large pile height according to Fig. 2 arise small bearing surfaces, which are smaller in their extension along the direction of rotation VR than the measured in the same direction widths of the respective support section. The device 1 is therefore supported only over a partial area of the entire bottom plate in the region of the suction mouth 2.

Die Auflageabschnitte 5 und 6 gehen saugmundseitig jeweils in einen bodenparallelen Randabschnitt 7 über, welch letzterer gegenüber dem Scheitelpunkt des jeweiligen Auflageabschnittes 5 bzw. 6 überhöht ist. Das vertikale Maß dieser Überhöhung u entspricht in dem gezeigten Ausführungsbeispiel etwa einem Achtel des Radius r' des vorderen Auflageabschnittes 5. Zufolge dieser Ausgestaltung erstrecken sich die bodenparallelen Randabschnitte 7 oberhalb des Auflagebereiches auf dem zu pflegenden Boden 4 und wirken demzufolge nicht störend ein.The support sections 5 and 6 pass on the suction mouth side in each case into a bottom-parallel edge section 7, which latter is raised above the vertex of the respective support section 5 or 6. The vertical extent of this elevation u corresponds in the embodiment shown approximately one-eighth of the radius r 'of the front support section 5. According to this embodiment, the bottom-parallel edge portions 7 extend above the support area on the floor to be maintained 4 and therefore do not interfere.

Die Krümmungen des jeweiligen Auflageabschnittes 5, 6 sind auf der dem Saugmundrand 7 entgegengesetzten Seite des Auflageabschnittes 5, 6 über das Überhöhungsmaß u bezüglich des Saugmundrandes 7 fortgesetzt, so daß sich sowohl in Verschieberichtung VR als auch entgegen dieser jeweils weiche Auflaufzonen Z ergeben.The curvatures of the respective support section 5, 6 are on the Saugmundrand 7 opposite side of the support section 5, 6 on the Überhöhungsmaß u continued with respect to the Saugmundrandes 7, so that both in the direction of displacement VR and against this each soft casserole Z result.

Wie aus der Unteransicht in Fig. 3 zu erkennen, erstrecken sich die Auflageabschnitte 5 und 6 mindestens über die quer zur Verschieberichtung VR gemessene Länge l des Saugmundes 2. Hier ist weiter zu erkennen, daß die beiden gesonderten Auflageabschnitte 5 und 6 zur Bildung einer einheitlichen Bodenplatte 3 mittels sich über den Saugmund 2 erstreckende Stege 8 verbunden sind.As seen from the bottom view in Fig. 3 to recognize, the support portions 5 and 6 extend at least over the transverse to the displacement direction VR measured length l of the suction mouth 2. Here it can be further seen that the two separate support sections 5 and 6 to form a uniform base plate 3 by means of the suction 2 extending webs 8 are connected.

Die erfindungsgemäße Bodenplatte 3 besteht bevorzugt aus einem metallischen Werkstoff. Es sind jedoch auch Ausgestaltungen aus einem Hartkunststoff oder dergleichen denkbar.The bottom plate 3 according to the invention is preferably made of a metallic material. However, embodiments of a hard plastic or the like are also conceivable.

Durch die erfindungsgemäße Ausgestaltung der Bodenplatte 3 wird der Teppichboden 4 gut zur Erzielung des nötigen Unterdruckes abgedichtet, wobei durch die gekrümmten Auflageabschnitte 5, 6 einem Verdichten des Teppichbodens 4 entgegengewirkt ist. Hieraus ergibt sich eine verbesserte Umströmung (dargestellt durch die Pfeile y), was einen gewünschten erhöhten Volumenstrom im Bereich des Saugmundes 2 zur Verbesserung der Staubaufnahme zur Folge hat, dies ohne Erhöhung der Saugleistung des Staubsaugers.Due to the inventive design of the bottom plate 3, the carpet 4 is well sealed to achieve the necessary negative pressure, which is counteracted by the curved support sections 5, 6 compaction of the carpet 4. This results in an improved flow around (represented by the arrows y), which has a desired increased volume flow in the region of the suction mouth 2 to improve the dust absorption result, without increasing the suction power of the vacuum cleaner.

Neben der strömungstechnischen Verbesserung der Bodenplatte 3 ist durch die erfindungsgemäße Ausgestaltung die Schiebekraft zur Verlagerung des Gerätes 1 auf dem zu pflegenden Boden 4, insbesondere bei mittel- und hochflorigen Teppichböden verringert.In addition to the fluidic improvement of the bottom plate 3 is reduced by the inventive design, the pushing force for moving the device 1 on the floor to be cared for 4, especially in medium- and high-pile carpets.

Claims (7)

  1. Vacuum cleaner comprising an electric motor and a suction line which opens into a suction opening (2), the suction opening (2) being delimited on the lower side thereof by a base plate (3) and the base plate (3) further comprising support portions (5, 6), and a support portion (5, 6) being curved in cross-section in the displacement direction (VR) of the vacuum cleaner in the manner of a wheel rolling surface, characterised in that the support portions (5, 6) are of different configurations and in that the support portion arranged at the front in the displacement direction (VR) has a smaller radius of curvature (r') than the support portion (6) arranged at the rear in the displacement direction, with the ratios of the dimensions remaining constant over the entire length of the suction opening.
  2. Vacuum cleaner according to claim 1, characterised in that On the suction opening side, the support portion (5, 6) transitions into a horizontal edge portion (7) of the suction opening.
  3. Vacuum cleaner according to either claim 1 or claim 2, characterised in that the radius of curvature (r',r") is 0.25 to 2 times the width (b) of the suction opening in the displacement direction (VR).
  4. Vacuum cleaner according to claim 3, characterised in that the radius of curvature (r', r") is between a third of and one times the width (b) of the suction opening in the displacement direction (VR).
  5. Vacuum cleaner according to any one of claims 1 to 4, characterised in that a vertical dimension of the cant (u) of the support portion (5, 6) relative to the edge portion (7) is 1/8 to 1./2 of the radius (r',r") of the support portion (5, 6).
  6. Vacuum cleaner according to any one of claims in 1 to 5, characterised in that the curvature on the side of the support portion (5, 6) opposite the suction opening edge (7) continues relative to the suction opening edge (7) by the amount of the cant (u).
  7. Vacuum cleaner according to any one of claims I to 6, characterised in that the support portion (5, 6) extends over at least the length (1) of the suction opening (2) as measured transverse to the displacement direction (VR).
EP99116008A 1998-09-02 1999-08-14 Vacuum cleaner Expired - Lifetime EP0983742B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19839865 1998-09-02
DE19839865A DE19839865A1 (en) 1998-09-02 1998-09-02 vacuum cleaner

Publications (3)

Publication Number Publication Date
EP0983742A2 EP0983742A2 (en) 2000-03-08
EP0983742A3 EP0983742A3 (en) 2001-07-18
EP0983742B1 true EP0983742B1 (en) 2009-07-01

Family

ID=7879471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99116008A Expired - Lifetime EP0983742B1 (en) 1998-09-02 1999-08-14 Vacuum cleaner

Country Status (6)

Country Link
EP (1) EP0983742B1 (en)
AT (1) ATE434965T1 (en)
CZ (1) CZ297732B6 (en)
DE (2) DE19839865A1 (en)
PL (1) PL190589B1 (en)
SK (1) SK116299A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860413B1 (en) * 2003-10-01 2005-12-09 Seb Sa VACUUM SUCKER
DE102014106192A1 (en) * 2014-05-05 2015-11-05 Miele & Cie. Kg Vacuum cleaner mouth for a vacuum cleaner or a vacuum cleaner nozzle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE626079C (en) * 1934-06-12 1936-02-20 Fisker & Nielsen As Suction mouthpiece for vacuum cleaner
DE688768C (en) * 1937-06-08 1940-03-02 Fisker & Nielsen As Vacuum cleaner mouthpiece with rotatable suction nozzle
DE3708503A1 (en) * 1986-04-01 1987-10-08 Siemens Ag Vacuum cleaner mouthpiece
FR2653654B1 (en) * 1989-10-31 1992-02-14 Olivier Ets Georges ROTATING CONNECTION HOUSING FOR VACUUM CLEANER.
CZ3605U1 (en) * 1995-02-15 1995-07-18 Eta A.S. Floor nozzle of electric vacuum cleaner

Also Published As

Publication number Publication date
ATE434965T1 (en) 2009-07-15
SK116299A3 (en) 2000-06-12
EP0983742A2 (en) 2000-03-08
CZ9902909A3 (en) 2000-12-13
EP0983742A3 (en) 2001-07-18
PL335043A1 (en) 2000-03-13
DE19839865A1 (en) 2000-03-09
PL190589B1 (en) 2005-12-30
CZ297732B6 (en) 2007-03-14
DE59915046D1 (en) 2009-08-13

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