EP3047775B1 - Sliding sole made from plastic for a vacuum cleaner nozzle - Google Patents

Sliding sole made from plastic for a vacuum cleaner nozzle Download PDF

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Publication number
EP3047775B1
EP3047775B1 EP16151171.2A EP16151171A EP3047775B1 EP 3047775 B1 EP3047775 B1 EP 3047775B1 EP 16151171 A EP16151171 A EP 16151171A EP 3047775 B1 EP3047775 B1 EP 3047775B1
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EP
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Prior art keywords
suction mouth
sliding sole
edge
suction
sliding
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EP16151171.2A
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German (de)
French (fr)
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EP3047775A1 (en
Inventor
Horst Dilger
Hans-Joachim Steudtner
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Wessel Werk GmbH
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Wessel Werk GmbH
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Publication of EP3047775A1 publication Critical patent/EP3047775A1/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 plastic sliding sole for a vacuum cleaner nozzle with a molded on its underside suction mouth, which is bounded by a front and a rear suction mouth, a Aufgleitschräge in the working direction in front of the suction mouth, an inclined sliding surface in the working direction behind the suction mouth and one in the suction mouth opening suction port.
  • a sliding sole according to the preamble of claim 1 is made, for example EP-A-2433538 known.
  • the sliding sole is intended for a bottom suction nozzle and in particular suitable for a bottom suction nozzle, which has a nozzle body with at least one roller and a pivotably mounted on the nozzle body suction head.
  • the nozzle body has at its end remote from the suction head on a pivotally mounted suction pipe connection piece.
  • the pivot axis of the Saugrohran gleich Swisses and the pivot axis between the suction head and the nozzle body form two hinge axes.
  • Such a floor nozzle is therefore also referred to as a "double-joint nozzle”.
  • the sliding sole is part of the suction head. Due to the pivotable mounting of the suction head, the sliding sole can adapt to the ground surface during a movement of the floor nozzle via a floor surface to be cleaned and is not exposed to the forces which are transmitted to the nozzle body by means of a manually moving suction pipe.
  • a sliding sole with the features described above is known from practice.
  • the sliding sole When vacuuming textile floor surfaces, the sliding sole lies on the floor surface and is moved alternately with forward and backward movements over the textile floor surface.
  • the sole has to meet a number of requirements. If the sliding sole is part of a double-jointed nozzle, it must be ensured that the sliding sole contributes Forward and backward movements always rest flat on the floor surface and do not tilt during variable forward and backward movements. The sliding sole should therefore have a low sliding resistance. To achieve good suction properties, it is also necessary that the suction mouth edges seal the suction mouth on the bottom side and can therefore build up in the suction mouth over the entire working width of the sole an effective suction vacuum.
  • the suction mouth and the Saugmundbegrenzung must be designed so that the sucked air flow flows around the Saugmundkanten with a high air velocity, so that dust is released from the carpet pile and entrained by the air flow.
  • the effective for the dust absorption edges of the suction mouth must be immersed over the entire working width in the carpet pile.
  • immersion of the suction mouth edges in the carpet causes the sliding resistance to increase at the suction mouth edges and to cause tilting moments on the sliding sole when the floor nozzle moves.
  • the suction properties should be uniform over the entire working width of the suction mouth.
  • a good Randabsaugung is required when the suction nozzle is moved, for example, on baseboards or furniture along.
  • the present invention seeks to provide a plastic sole for a vacuum cleaner nozzle that effectively absorbs dirt on textile floor surfaces over their entire working width and has good sliding properties.
  • the object of the invention and solution of this problem is a sliding sole made of plastic according to claim 1.
  • the sliding sole is made of plastic and can be manufactured in particular as an injection molded part with tight manufacturing tolerances.
  • the sliding sole has the features described above.
  • the front suction mouth edge extends without interruption over the entire working width of the soleplate and delimits at both ends of the suction mouth an edge section of the treadmill designed for edge suction.
  • a horizontal plateau is arranged, which extends at the level of the front suction mouth edge over the entire length of the front suction mouth edge parallel thereto.
  • the front suction mouth edge and the plateau adjoining the front suction mouth edge form a boundary of the suction mouth which determines the suction properties and extends over the entire working width of the suction mouth without interruption.
  • the horizontal plateau arranged between the front slanted slope and the front suction mouth edge forms an effective seal of the suction mouth on the bottom surface, which ensures that the aspirated air enters the suction mouth at a high flow velocity. Dust, which is released by the air flow from the textile pile of the bottom surface, passes through the airflow flowing around the horizontal plateau into the suction mouth. Since the sliding sole can be produced as a plastic injection-molded part with low manufacturing tolerances, the horizontal plateau over the entire working width of the sole has a defined and preferably constant width.
  • the horizontal plateau adjoining the suction mouth edge also improves the sliding properties of the sliding sole on textile floor surfaces.
  • the plateau contributes to that front suction mouth edge does not dig into the textile pile during a forward movement of the sliding sole over a textile floor covering.
  • the invention provided between the front Saugmundkante and the Aufgleitschräge horizontal plateau reduced in a forward movement of the sliding sole the sliding resistance at the front Saugmundkante and helps that no tilting moments are exerted on the soleplate in a movement of the soleplate over a floor surface to be cleaned.
  • the embodiment of the invention combines good suction properties by an effective over the entire working width of the sliding sole seal of Saugmundes opposite the bottom surface and a low sliding resistance in a movement of the sliding sole on a textile floor surface to be cleaned.
  • the soleplate is particularly suitable for floor nozzles, which are designed in the manner described above as a double-jointed nozzles.
  • the front suction mouth edge is formed in a plan view of the sliding sole as a straight edge and extending to the front suction mouth edge adjacent horizontal plateau with a constant width parallel to the front suction mouth edge. This is preferably formed sharp-edged.
  • the horizontal plateau provided between the front suction mouth edge and the front slide slope may have a width between 2 mm and 5 mm.
  • the Aufgleitschräge according to the invention has an inclination between 5 ° and 7 ° or is formed as a spherically shaped surface, for example with a radius of 50 to 200 mm.
  • the Aufgleitschräge on a plateau adjacent recess for a thread lifter strip Loose threads that adhere to the thread lifter strip, are from the horizontal air flow around the plateau is detected and reaches the suction mouth with the flow of air.
  • the depression is formed in the Aufgleitschräge and adjacent directly to the plateau.
  • depressions for receiving thread lifting strips are provided on both sides of the suction mouth.
  • the rear suction mouth edge is preferably also sharp-edged. It extends without interruption over the entire working width of the sole and limited at both ends of the suction mouth designed for Randabsaugung end portion of the suction.
  • the suction mouth has a central suction mouth section delimited by parallel suction mouth edges and adjoining tapered end sections, wherein the rear suction mouth edge is aligned in the end sections at an angle to the front suction mouth edge.
  • the middle suction mouth section expediently extends over more than 30% and preferably over at least 60% of the working width of the sliding sole.
  • the end sections of the suction mouth can be open at the ends for edge suction. However, an end opening is not absolutely necessary.
  • the end portions have a smaller channel depth than the middle suction mouth portion.
  • the channel depth can change continuously starting from a central suction opening, wherein an inclination of the channel bottom can extend into the end sections of the suction mouth. Within the end sections, the channel depth can then change stepwise.
  • the suction air which enters the suction mouth in the suction mouth, flows to the opening into the suction mouth intake.
  • the suction opening is in particular centrally between the two ends of the Suction mouth arranged.
  • the sides of the suction mouth adjacent to each other are then expediently symmetrical.
  • the geometry and the channel depth of the suction mouth in the end sections are selected such that a sufficiently high flow velocity is established even in the end sections.
  • the channel forming the suction mouth has an undercut in the flow cross section along the rear suction mouth edge.
  • the channel walls adjoining the suction mouth in cross section preferably extend parallel, so that the channel cross section has the shape of a parallelogram.
  • the sliding sole shown in the figures is made of plastic and can be manufactured in one piece as a plastic injection molded part with small dimensional tolerances.
  • the sliding sole is for a vacuum cleaner nozzle for cleaning Floor areas determined. It has a molded on its underside suction mouth 1, which is bounded by a front suction mouth edge 2 and a rear suction mouth edge 3.
  • the suction mouth edges form sharp edges.
  • a Aufgleitschräge 4 is provided in the working direction behind the suction mouth 1 .
  • an inclined sliding surface 5 In the suction mouth 1 opens a suction port 6. This is formed as a window with a rectangular base and is located centrally between the ends of the suction mouth 1.
  • depressions 7 are arranged, are inserted into the thread lifter strip 8.
  • the thread lifter strip 8 suitably close to the ground flush with the surfaces of the Aufgleitschräge 4 and the sliding surface 5 at.
  • Fig. 1 extends the front suction mouth edge 2 without interruption as a straight edge over the entire working width A of the sole and limited at both ends of the suction mouth 1 designed for Randabsaugung end portion of the suction mouth 1.
  • a horizontal plateau. 9 arranged, which extends at the level of the front suction mouth edge 2 with a constant width b over the entire length of the front suction mouth edge 2 parallel thereto.
  • the plateau 9 has a width b between 2 mm and 5 mm.
  • the recess 7 for a thread lifter strip 8 is formed in the Aufgleitschräge 4 and adjacent to the plateau 9 directly.
  • the Aufgleitschräge 4 has an inclination between 5 ° and 7 °. Alternatively, it may also be formed as a spherically shaped surface.
  • the rear suction mouth edge 3 also extends without interruption over the entire working width A of the sole and limited at both ends of the suction mouth 1 designed for Randabsaugung end portion of the suction mouth 1.
  • the arranged behind the suction mouth 1 in the working direction Sliding surface 5 in the exemplary embodiment has an inclination angle of approximately 6 ° and directly adjoins the rear suction mouth edge 3.
  • the suction mouth 1 has a central suction mouth section delimiting from parallel suction mouth edges 2, 3 and adjoining tapered end sections.
  • the rear suction mouth edge 3 is aligned obliquely to the front suction mouth edge 2 in plan view.
  • the middle suction mouth section in which the front suction mouth edge 2 and the rear suction mouth edge 3 are aligned parallel to one another, extends over more than 30% and preferably at least 60% of the working width of the sliding sole.
  • the channel depth a of the suction mouth 1 is less in the end portions than in the central suction mouth portion and changes continuously in a first region on both sides of the suction opening 6.
  • the suction mouth 1 has a channel bottom 13, which is inclined in the first region on both sides of the suction opening 6.
  • the inclination of the channel bottom 3 extends into the end portions of the suction mouth.
  • the channel depth a can change stepwise.
  • the stage 14 inside the suction mouth is in Fig. 1 shown and also results from a comparative consideration of the sectional views in the 3 and 4 ,
  • the channel forming the suction mouth 1 has an undercut 10 in the flow cross section along the rear suction mouth edge.
  • the channel walls 11, 12 along the front suction mouth edge 2 and the rear suction mouth edge 3 may extend parallel to one another, so that the channel forming the suction mouth 1 has the shape of a parallelogram in cross section.

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

Description

Die Erfindung betrifft eine Gleitsohle aus Kunststoff für eine Staubsaugerdüse mit einem an ihrer Unterseite eingeformten Saugmund, der von einer vorderen und einer hinteren Saugmundkante begrenzt ist, einer Aufgleitschräge in Arbeitsrichtung vor dem Saugmund, einer geneigten Gleitfläche in Arbeitsrichtung hinter dem Saugmund und einer in den Saugmund mündenden Ansaugöffnung. Eine Gleitsohle gemäß dem Oberbegriff des Anspruchs 1 ist z.B. aus EP-A-2433538 bekannt.
Die Gleitsohle ist für eine Bodensaugdüse bestimmt und insbesondere für eine Bodensaugdüse geeignet, die einen Düsenkörper mit zumindest einer Laufrolle sowie einen schwenkbeweglich am Düsenkörper gelagerten Saugkopf aufweist. Der Düsenkörper weist an seinem von dem Saugkopf abgewandten Ende ein schwenkbeweglich gelagertes Saugrohranschlussstück auf. Die Schwenkachse des Saugrohranschlussstückes und die Schwenkachse zwischen dem Saugkopf und dem Düsenkörper bilden zwei Gelenkachsen. Eine solche Bodendüse wird daher auch als "Doppelgelenkdüse" bezeichnet. Die Gleitsohle ist Bestandteil des Saugkopfes. Durch die schwenkbewegliche Lagerung des Saugkopfes kann sich die Gleitsohle bei einer Bewegung der Bodendüse über eine zu reinigende Bodenfläche an die Bodenoberfläche anpassen und ist nicht den Kräften ausgesetzt, die mittels eines von Hand bewegten Saugrohres auf den Düsenkörper übertragen werden.
Eine Gleitsohle mit den eingangs beschriebenen Merkmalen ist aus der Praxis bekannt. Beim Saugen textiler Bodenflächen liegt die Gleitsohle auf der Bodenfläche auf und wird im Wechsel mit Vorwärts- und Rückwärtsbewegungen über die textile Bodenfläche bewegt. Dabei muss die Gleitsohle eine Mehrzahl von Anforderungen erfüllen. Wenn die Gleitsohle Bestandteil einer Doppelgelenkdüse ist, muss sichergestellt sein, dass die Gleitsohle bei Vorwärts- und Rückwärtsbewegungen stets plan auf der Bodenfläche aufliegt und bei wechselnden Vorwärts- und Rückwärtsbewegungen keinerlei Kippbewegungen ausführt. Die Gleitsohle soll daher einen geringen Gleitwiderstand aufweisen. Zur Erzielung guter Saugeigenschaften ist es ferner notwendig, dass die Saugmundkanten den Saugmund bodenseitig abdichten und sich infolgedessen im Saugmund über die gesamte Arbeitsbreite der Gleitsohle ein wirksamer Saugunterdruck aufbauen kann. Ferner muss der Saugmund und die Saugmundbegrenzung so gestaltet werden, dass der angesaugte Luftstrom die Saugmundkanten mit einer hohen Luftgeschwindigkeit umströmt, so dass Staub aus dem Teppichflor gelöst und von der Luftströmung mitgerissen wird. Die für die Staubaufnahme wirksamen Kanten des Saugmundes müssen über die gesamte Arbeitsbreite in den Teppichflor eintauchen. Andererseits hat ein Eintauchen der Saugmundkanten im Teppichflor zur Folge, dass der Gleitwiderstand sich an den Saugmundkanten erhöht und bei einer Bewegung der Bodendüse Kippmomente auf die Gleitsohle wirkt. Bei alledem ist zu berücksichtigen, dass die Saugeigenschaften über die gesamte Arbeitsbreite des Saugmundes gleichmäßig sein sollen. Schließlich wird eine gute Randabsaugung gefordert, wenn die Saugdüse beispielsweise an Fußleisten oder an Möbelstücken entlang bewegt wird.The invention relates to a plastic sliding sole for a vacuum cleaner nozzle with a molded on its underside suction mouth, which is bounded by a front and a rear suction mouth, a Aufgleitschräge in the working direction in front of the suction mouth, an inclined sliding surface in the working direction behind the suction mouth and one in the suction mouth opening suction port. A sliding sole according to the preamble of claim 1 is made, for example EP-A-2433538 known.
The sliding sole is intended for a bottom suction nozzle and in particular suitable for a bottom suction nozzle, which has a nozzle body with at least one roller and a pivotably mounted on the nozzle body suction head. The nozzle body has at its end remote from the suction head on a pivotally mounted suction pipe connection piece. The pivot axis of the Saugrohranschlussstückes and the pivot axis between the suction head and the nozzle body form two hinge axes. Such a floor nozzle is therefore also referred to as a "double-joint nozzle". The sliding sole is part of the suction head. Due to the pivotable mounting of the suction head, the sliding sole can adapt to the ground surface during a movement of the floor nozzle via a floor surface to be cleaned and is not exposed to the forces which are transmitted to the nozzle body by means of a manually moving suction pipe.
A sliding sole with the features described above is known from practice. When vacuuming textile floor surfaces, the sliding sole lies on the floor surface and is moved alternately with forward and backward movements over the textile floor surface. The sole has to meet a number of requirements. If the sliding sole is part of a double-jointed nozzle, it must be ensured that the sliding sole contributes Forward and backward movements always rest flat on the floor surface and do not tilt during variable forward and backward movements. The sliding sole should therefore have a low sliding resistance. To achieve good suction properties, it is also necessary that the suction mouth edges seal the suction mouth on the bottom side and can therefore build up in the suction mouth over the entire working width of the sole an effective suction vacuum. Furthermore, the suction mouth and the Saugmundbegrenzung must be designed so that the sucked air flow flows around the Saugmundkanten with a high air velocity, so that dust is released from the carpet pile and entrained by the air flow. The effective for the dust absorption edges of the suction mouth must be immersed over the entire working width in the carpet pile. On the other hand, immersion of the suction mouth edges in the carpet causes the sliding resistance to increase at the suction mouth edges and to cause tilting moments on the sliding sole when the floor nozzle moves. In all of this, it should be noted that the suction properties should be uniform over the entire working width of the suction mouth. Finally, a good Randabsaugung is required when the suction nozzle is moved, for example, on baseboards or furniture along.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Kunststoffgleitsohle für eine Staubsaugerdüse anzugeben, die auf textilen Bodenflächen über ihre gesamte Arbeitsbreite Schmutz wirksam aufnimmt und gute Gleiteigenschaften aufweist.Against this background, the present invention seeks to provide a plastic sole for a vacuum cleaner nozzle that effectively absorbs dirt on textile floor surfaces over their entire working width and has good sliding properties.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Gleitsohle aus Kunststoff nach Anspruch 1.The object of the invention and solution of this problem is a sliding sole made of plastic according to claim 1.

Die Gleitsohle besteht aus Kunststoff und kann insbesondere als Spritzgussteil mit engen Fertigungstoleranzen gefertigt werden. Die Gleitsohle weist die eingangs beschriebenen Merkmale auf. Erfindungsgemäß erstreckt sich die vordere Saugmundkante ohne Unterbrechung über die gesamte Arbeitsbreite der Gleitsohle und begrenzt an beiden Enden des Saugmundes einen zur Randabsaugung ausgelegten Endabschnitt des Laufbandes. Zwischen der vorderen Aufgleitschräge und der vorderen Saugmundkante ist ein horizontales Plateau angeordnet, welches sich auf dem Niveau der vorderen Saugmundkante über die gesamte Länge der vorderen Saugmundkante parallel zu dieser erstreckt.The sliding sole is made of plastic and can be manufactured in particular as an injection molded part with tight manufacturing tolerances. The sliding sole has the features described above. According to the invention, the front suction mouth edge extends without interruption over the entire working width of the soleplate and delimits at both ends of the suction mouth an edge section of the treadmill designed for edge suction. Between the front Aufgleitschräge and the front Saugmundkante a horizontal plateau is arranged, which extends at the level of the front suction mouth edge over the entire length of the front suction mouth edge parallel thereto.

Die vordere Saugmundkante und das an die vordere Saugmundkante angrenzende Plateau bilden eine die Saugeigenschaften bestimmende Berandung des Saugmundes, die sich ohne Unterbrechung über die gesamte Arbeitsbreite des Saugmundes erstreckt. Beim Saugen textiler Bodenflächen bildet das zwischen der vorderen Aufgleitschräge und der vorderen Saugmundkante angeordnete horizontale Plateau eine wirksame Abdichtung des Saugmundes an der Bodenfläche, durch welche gewährleistet ist, dass die angesaugte Luft mit einer hohen Strömungsgeschwindigkeit in den Saugmund eintritt. Staub, der durch die Luftströmung aus dem textilen Flor der Bodenfläche gelöst wird, gelangt durch die das horizontale Plateau umströmende Luftströmung in den Saugmund. Da die Gleitsohle als Kunststoff spritzgussteil mit geringen Fertigungstoleranzen hergestellt werden kann, weist das horizontale Plateau über die gesamte Arbeitsbreite der Gleitsohle eine definierte und vorzugsweise konstante Breite auf. Infolgedessen stellen sich an der Saugmundkante definierte Strömungsverhältnisse ein, wenn die Gleitsohle über eine textile Bodenfläche bewegt wird. Dabei verbessert das an die Saugmundkante angrenzende horizontale Plateau auch die Gleiteigenschaften der Gleitsohle auf textilen Bodenflächen. Das Plateau trägt dazu bei, dass die vordere Saugmundkante sich bei einer Vorwärtsbewegung der Gleitsohle über einen textilen Bodenbelag nicht in den textilen Flor eingräbt. Das erfindungsgemäß zwischen der vorderen Saugmundkante und der Aufgleitschräge vorgesehene horizontale Plateau reduziert bei einer Vorwärtsbewegung der Gleitsohle den Gleitwiderstand an der vorderen Saugmundkante und trägt dazu bei, dass bei einer Bewegung der Gleitsohle über eine zu reinigende Bodenfläche keine Kippmomente auf die Gleitsohle ausgeübt werden. Die erfindungsgemäße Ausgestaltung vereint gute Saugeigenschaften durch eine über die gesamte Arbeitsbreite der Gleitsohle wirksame Dichtung des Saugmundes gegenüber der Bodenfläche und einen geringen Gleitwiderstand bei einer Bewegung der Gleitsohle über eine zu reinigende textile Bodenfläche. Dadurch eignet sich die Gleitsohle insbesondere für Bodendüsen, die in der eingangs beschriebenen Weise als Doppelgelenkdüsen ausgebildet sind.The front suction mouth edge and the plateau adjoining the front suction mouth edge form a boundary of the suction mouth which determines the suction properties and extends over the entire working width of the suction mouth without interruption. When vacuuming textile bottom surfaces, the horizontal plateau arranged between the front slanted slope and the front suction mouth edge forms an effective seal of the suction mouth on the bottom surface, which ensures that the aspirated air enters the suction mouth at a high flow velocity. Dust, which is released by the air flow from the textile pile of the bottom surface, passes through the airflow flowing around the horizontal plateau into the suction mouth. Since the sliding sole can be produced as a plastic injection-molded part with low manufacturing tolerances, the horizontal plateau over the entire working width of the sole has a defined and preferably constant width. As a result, defined flow conditions occur at the suction mouth edge when the sliding sole is moved over a textile bottom surface. The horizontal plateau adjoining the suction mouth edge also improves the sliding properties of the sliding sole on textile floor surfaces. The plateau contributes to that front suction mouth edge does not dig into the textile pile during a forward movement of the sliding sole over a textile floor covering. The invention provided between the front Saugmundkante and the Aufgleitschräge horizontal plateau reduced in a forward movement of the sliding sole the sliding resistance at the front Saugmundkante and helps that no tilting moments are exerted on the soleplate in a movement of the soleplate over a floor surface to be cleaned. The embodiment of the invention combines good suction properties by an effective over the entire working width of the sliding sole seal of Saugmundes opposite the bottom surface and a low sliding resistance in a movement of the sliding sole on a textile floor surface to be cleaned. As a result, the soleplate is particularly suitable for floor nozzles, which are designed in the manner described above as a double-jointed nozzles.

Vorzugsweise ist die vordere Saugmundkante in einer Draufsicht auf die Gleitsohle als gerade Kante ausgebildet und erstreckt sich das an die vordere Saugmundkante angrenzende horizontale Plateau mit einer konstanten Breite parallel zu der vorderen Saugmundkante. Diese ist vorzugsweise scharfkantig ausgebildet.Preferably, the front suction mouth edge is formed in a plan view of the sliding sole as a straight edge and extending to the front suction mouth edge adjacent horizontal plateau with a constant width parallel to the front suction mouth edge. This is preferably formed sharp-edged.

Das zwischen der vorderen Saugmundkante und der vorderen Aufgleitschräge vorgesehene horizontale Plateau kann eine Breite zwischen 2 mm und 5 mm aufweisen. Die Aufgleitschräge hat erfindungsgemäß eine Neigung zwischen 5° und 7° oder ist als ballig geformte Fläche beispielsweise mit einem Radius von 50 bis 200 mm ausgebildet.The horizontal plateau provided between the front suction mouth edge and the front slide slope may have a width between 2 mm and 5 mm. The Aufgleitschräge according to the invention has an inclination between 5 ° and 7 ° or is formed as a spherically shaped surface, for example with a radius of 50 to 200 mm.

Gemäß einer weiteren Ausgestaltung der Erfindung weist die Aufgleitschräge eine an das Plateau angrenzende Vertiefung für einen Fadenheberstreifen auf. Lose Fäden, die an dem Fadenheberstreifen haften, werden von der das horizontale Plateau umströmende Luftströmung erfasst und gelangen mit der Luftströmung in den Saugmund. Die Vertiefung ist in der Aufgleitschräge eingeformt und grenzt unmittelbar an das Plateau an. Zweckmäßig sind beidseits des Saugmundes Vertiefungen zur Aufnahme von Fadenheberstreifen vorgesehen.According to a further embodiment of the invention, the Aufgleitschräge on a plateau adjacent recess for a thread lifter strip. Loose threads that adhere to the thread lifter strip, are from the horizontal air flow around the plateau is detected and reaches the suction mouth with the flow of air. The depression is formed in the Aufgleitschräge and adjacent directly to the plateau. Expediently, depressions for receiving thread lifting strips are provided on both sides of the suction mouth.

Die hintere Saugmundkante ist vorzugsweise ebenfalls scharfkantig ausgebildet. Sie erstreckt sich ohne Unterbrechung über die gesamte Arbeitsbreite der Gleitsohle und begrenzt an beiden Enden des Saugmundes einen zur Randabsaugung ausgelegten Endabschnitt des Saugmundes.The rear suction mouth edge is preferably also sharp-edged. It extends without interruption over the entire working width of the sole and limited at both ends of the suction mouth designed for Randabsaugung end portion of the suction.

Gemäß einer bevorzugten Ausführung der Erfindung weist der Saugmund einen von parallelen Saugmundkanten begrenzten mittleren Saugmundabschnitt und daran anschließende sich verjüngende Endabschnitte auf, wobei die hintere Saugmundkante in der Draufsicht in den Endabschnitten schräg zur vorderen Saugmundkante ausgerichtet ist. Der mittlere Saugmundabschnitt erstreckt sich dabei zweckmäßig über mehr als 30% und vorzugsweise über zumindest 60% der Arbeitsbreite der Gleitsohle.According to a preferred embodiment of the invention, the suction mouth has a central suction mouth section delimited by parallel suction mouth edges and adjoining tapered end sections, wherein the rear suction mouth edge is aligned in the end sections at an angle to the front suction mouth edge. The middle suction mouth section expediently extends over more than 30% and preferably over at least 60% of the working width of the sliding sole.

Die Endabschnitte des Saugmundes können zur Randabsaugung endseitig offen sein. Eine endseitige Öffnung ist jedoch nicht zwingend notwendig. Vorzugsweise weisen die Endabschnitte eine geringere Kanaltiefe auf als der mittlere Saugmundabschnitt. Die Kanaltiefe kann sich von einer mittleren Ansaugöffnung ausgehend stetig ändern, wobei eine Neigung des Kanalbodens sich bis in die Endabschnitte des Saugmundes hinein erstrecken kann. Innerhalb der Endabschnitte kann die Kanaltiefe sich dann auch stufenförmig ändern. Die Saugluft, die an den Saugmundkanten in den Saugmund eintritt, strömt der in den Saugmund mündenden Ansaugöffnung zu. Die Ansaugöffnung ist insbesondere mittig zwischen den beiden Enden des Saugmundes angeordnet. Die beidseitig angrenzenden Abschnitte des Saugmundes sind dann zweckmäßig symmetrisch ausgebildet. Die Geometrie und die Kanaltiefe des Saugmundes in den Endabschnitten sind so gewählt, dass sich auch in den Endabschnitten eine ausreichend große Strömungsgeschwindigkeit einstellt.The end sections of the suction mouth can be open at the ends for edge suction. However, an end opening is not absolutely necessary. Preferably, the end portions have a smaller channel depth than the middle suction mouth portion. The channel depth can change continuously starting from a central suction opening, wherein an inclination of the channel bottom can extend into the end sections of the suction mouth. Within the end sections, the channel depth can then change stepwise. The suction air, which enters the suction mouth in the suction mouth, flows to the opening into the suction mouth intake. The suction opening is in particular centrally between the two ends of the Suction mouth arranged. The sides of the suction mouth adjacent to each other are then expediently symmetrical. The geometry and the channel depth of the suction mouth in the end sections are selected such that a sufficiently high flow velocity is established even in the end sections.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung weist der den Saugmund bildende Kanal im Strömungsquerschnitt entlang der hinteren Saugmundkante einen Hinterschnitt auf. Die an den Saugmund im Querschnitt angrenzenden Kanalwände erstrecken sich vorzugsweise parallel, so dass der Kanalquerschnitt die Form eines Parallelogramms aufweist.According to a further advantageous embodiment of the invention, the channel forming the suction mouth has an undercut in the flow cross section along the rear suction mouth edge. The channel walls adjoining the suction mouth in cross section preferably extend parallel, so that the channel cross section has the shape of a parallelogram.

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

Fig. 1
die Unteransicht einer Gleitsohle für eine Staubsaugerdüse,
Fig. 2
einen Querschnitt durch den Saugmund der in Fig. 1 dargestellten Gleitsohle in der Schnittebene A-A,
Fig. 3
einen Querschnitt durch den Saugmund der in Fig. 1 dargestellten Gleitsohle in der Schnittebene B-B,
Fig. 4
einen Querschnitt durch den Saugmund der in Fig. 1 dargestellten Gleitsohle in der Schnittebene C-C.
In the following the invention will be explained with reference to a drawing showing only one embodiment. They show schematically:
Fig. 1
the bottom view of a sliding sole for a vacuum cleaner nozzle,
Fig. 2
a cross section through the suction mouth of in Fig. 1 shown sliding sole in the cutting plane AA,
Fig. 3
a cross section through the suction mouth of in Fig. 1 shown sliding sole in the sectional plane BB,
Fig. 4
a cross section through the suction mouth of in Fig. 1 shown sliding sole in the cutting plane CC.

Die in den Figuren dargestellte Gleitsohle besteht aus Kunststoff und kann einstückig als Kunststoffspritzgussteil mit geringen Maßtoleranzen gefertigt werden. Die Gleitsohle ist für eine Staubsaugerdüse zur Reinigung von Bodenflächen bestimmt. Sie weist einen an ihrer Unterseite eingeformten Saugmund 1 auf, der von einer vorderen Saugmundkante 2 und einer hinteren Saugmundkante 3 begrenzt ist. Die Saugmundkanten bilden scharfe Kanten. In Arbeitsrichtung vor dem Saugmund ist eine Aufgleitschräge 4 vorgesehen. In Arbeitsrichtung hinter dem Saugmund 1 befindet sich eine geneigte Gleitfläche 5. In den Saugmund 1 mündet eine Ansaugöffnung 6. Diese ist als Fenster mit einer rechteckförmigen Grundfläche ausgebildet und ist mittig zwischen den Enden des Saugmundes 1 angeordnet. Beidseits des Saugmundes 1 sind Vertiefungen 7 angeordnet, in die Fadenheberstreifen 8 eingelegt sind. Die Fadenheberstreifen 8 schließen zweckmäßig bodenbündig an die Flächen der Aufgleitschräge 4 und der Gleitfläche 5 an.The sliding sole shown in the figures is made of plastic and can be manufactured in one piece as a plastic injection molded part with small dimensional tolerances. The sliding sole is for a vacuum cleaner nozzle for cleaning Floor areas determined. It has a molded on its underside suction mouth 1, which is bounded by a front suction mouth edge 2 and a rear suction mouth edge 3. The suction mouth edges form sharp edges. In the working direction in front of the suction mouth a Aufgleitschräge 4 is provided. In the working direction behind the suction mouth 1 is an inclined sliding surface 5. In the suction mouth 1 opens a suction port 6. This is formed as a window with a rectangular base and is located centrally between the ends of the suction mouth 1. On both sides of the suction mouth 1 depressions 7 are arranged, are inserted into the thread lifter strip 8. The thread lifter strip 8 suitably close to the ground flush with the surfaces of the Aufgleitschräge 4 and the sliding surface 5 at.

Gemäß der Darstellung der Fig. 1 erstreckt sich die vordere Saugmundkante 2 ohne Unterbrechung als gerade Kante über die gesamte Arbeitsbreite A der Gleitsohle und begrenzt an beiden Enden des Saugmundes 1 einen zur Randabsaugung ausgelegten Endabschnitt des Saugmundes 1. Zwischen der vorderen Aufgleitschräge 4 und der vorderen Saugmundkante 2 ist ein horizontales Plateau 9 angeordnet, welches sich auf dem Niveau der vorderen Saugmundkante 2 mit einer konstanten Breite b über die gesamte Länge der vorderen Saugmundkante 2 parallel zu dieser erstreckt. Das Plateau 9 weist eine Breite b zwischen 2 mm und 5 mm auf. Die Vertiefung 7 für einen Fadenheberstreifen 8 ist in der Aufgleitschräge 4 eingeformt und grenzt an das Plateau 9 unmittelbar an. Die Aufgleitschräge 4 hat eine Neigung zwischen 5° und 7°. Alternativ kann sie auch als ballig geformte Fläche ausgebildet sein.According to the presentation of the Fig. 1 extends the front suction mouth edge 2 without interruption as a straight edge over the entire working width A of the sole and limited at both ends of the suction mouth 1 designed for Randabsaugung end portion of the suction mouth 1. Between the front Aufgleitschräge 4 and the front Saugmundkante 2 is a horizontal plateau. 9 arranged, which extends at the level of the front suction mouth edge 2 with a constant width b over the entire length of the front suction mouth edge 2 parallel thereto. The plateau 9 has a width b between 2 mm and 5 mm. The recess 7 for a thread lifter strip 8 is formed in the Aufgleitschräge 4 and adjacent to the plateau 9 directly. The Aufgleitschräge 4 has an inclination between 5 ° and 7 °. Alternatively, it may also be formed as a spherically shaped surface.

Die hintere Saugmundkante 3 erstreckt sich ebenfalls ohne Unterbrechung über die gesamte Arbeitsbreite A der Gleitsohle und begrenzt an beiden Enden des Saugmundes 1 einen zur Randabsaugung ausgelegten Endabschnitt des Saugmundes 1. Die in Arbeitsrichtung hinter dem Saugmund 1 angeordnete Gleitfläche 5 hat im Ausführungsbeispiel einen Neigungswinkel von etwa 6° und grenzt an die hintere Saugmundkante 3 unmittelbar an.The rear suction mouth edge 3 also extends without interruption over the entire working width A of the sole and limited at both ends of the suction mouth 1 designed for Randabsaugung end portion of the suction mouth 1. The arranged behind the suction mouth 1 in the working direction Sliding surface 5 in the exemplary embodiment has an inclination angle of approximately 6 ° and directly adjoins the rear suction mouth edge 3.

Gemäß der Darstellung in Fig. 1 weist der Saugmund 1 einen von parallelen Saugmundkanten 2, 3 begrenzenden mittleren Saugmundabschnitt und daran anschließende sich verjüngende Endabschnitte auf. In den Endabschnitten ist die hintere Saugmundkante 3 in der Draufsicht schräg zur vorderen Saugmundkante 2 ausgerichtet. Der mittlere Saugmundabschnitt, in welchem die vordere Saugmundkante 2 und die hintere Saugmundkante 3 parallel zueinander ausgerichtet sind, erstreckt sich über mehr als 30% und vorzugsweise zumindest 60% der Arbeitsbreite der Gleitsohle.As shown in Fig. 1 the suction mouth 1 has a central suction mouth section delimiting from parallel suction mouth edges 2, 3 and adjoining tapered end sections. In the end sections, the rear suction mouth edge 3 is aligned obliquely to the front suction mouth edge 2 in plan view. The middle suction mouth section, in which the front suction mouth edge 2 and the rear suction mouth edge 3 are aligned parallel to one another, extends over more than 30% and preferably at least 60% of the working width of the sliding sole.

Die Kanaltiefe a des Saugmundes 1 ist in den Endabschnitten geringer als im mittleren Saugmundabschnitt und ändert sich in einem ersten Bereich beidseits der Ansaugöffnung 6 stetig. Der Saugmund 1 weist einen Kanalboden 13 auf, der im ersten Bereich beidseits der Ansaugöffnung 6 geneigt ist. Die Neigung des Kanalbodens 3 erstreckt sich bis in die Endabschnitte des Saugmundes hinein. Innerhalb der Endabschnitte kann sich die Kanaltiefe a stufenförmig ändern. Die Stufe 14 innerhalb des Saugmundes ist in Fig. 1 dargestellt und ergibt sich ferner aus einer vergleichenden Betrachtung der Schnittdarstellungen in den Fig. 3 und 4.The channel depth a of the suction mouth 1 is less in the end portions than in the central suction mouth portion and changes continuously in a first region on both sides of the suction opening 6. The suction mouth 1 has a channel bottom 13, which is inclined in the first region on both sides of the suction opening 6. The inclination of the channel bottom 3 extends into the end portions of the suction mouth. Within the end sections, the channel depth a can change stepwise. The stage 14 inside the suction mouth is in Fig. 1 shown and also results from a comparative consideration of the sectional views in the 3 and 4 ,

Den Schnittdarstellungen in den Fig. 2 bis 4 ist ferner zu entnehmen, dass der den Saugmund 1 bildende Kanal im Strömungsquerschnitt entlang der hinteren Saugmundkante einen Hinterschnitt 10 aufweist. Die Kanalwände 11, 12 entlang der vorderen Saugmundkante 2 und der hinteren Saugmundkante 3 können sich parallel zueinander erstrecken, so dass der den Saugmund 1 bildende Kanal im Querschnitt die Form eines Parallelogramms aufweist.The sectional views in the Fig. 2 to 4 It can also be seen that the channel forming the suction mouth 1 has an undercut 10 in the flow cross section along the rear suction mouth edge. The channel walls 11, 12 along the front suction mouth edge 2 and the rear suction mouth edge 3 may extend parallel to one another, so that the channel forming the suction mouth 1 has the shape of a parallelogram in cross section.

Claims (10)

  1. A sliding sole made of plastic for a vacuum cleaner nozzle comprising
    a suction mouth (1) molded in on its underside, which is defined by a front and a rear suction mouth edge (2, 3),
    a slide-on slope (4) in the working direction in front of the suction mouth (1),
    an inclined sliding surface (5) in the working direction behind the suction mouth (1) and
    a suction opening (6) leading into the suction mouth (1),
    wherein the front suction mouth edge (2) extends across the entire working width (A) of the sliding sole without interruption and, on both ends of the suction mouth (1), defines an end section of the suction mouth (1) designed for the edge suctioning, and wherein a horizontal plateau (9) is arranged between the front slide-on slope (4) and the front suction mouth edge (2), which horizontal plateau extends at the level of the front suction mouth edge (2) across the entire length of the front suction mouth edge (2) parallel to the latter, characterized in that the slide-on slope (4) has an incline of between 5° and 7° or is embodied as spherically shaped surface.
  2. The sliding sole according to claim 1, characterized in that, in a top view onto the sliding sole, the front suction mouth edge (2) is embodied as straight edge and that the horizontal plateau (9) adjoining the suction mouth edge extends on a constant width parallel to the front suction mouth edge (2).
  3. The sliding sole according to claim 1 or 2, characterized in that the plateau (9) has a width of between 2 mm and 5 mm.
  4. The sliding sole according to one of claims 1 to 3, characterized in that the slide-on slope (4) has a depression adjoining the plateau (9) for a thread lifter strip (8).
  5. The sliding sole according to one of claims 1 to 4, characterized in that depressions (7) for receiving thread lifter strips (8) are provided on both sides of the suction mouth (1).
  6. The sliding sole according to one of claims 1 to 5, characterized in that the rear suction mouth edge (3) extends across the entire working width (A) of the sliding sole without interruption and, on both ends of the suction mouth (1), defines an end section of the suction mouth (1) designed for the edge suctioning.
  7. The sliding sole according to one of claims 1 to 6, characterized in that the suction mouth (1) has a middle suction mouth section defined by parallel suction mouth edges (2, 3), and connected thereto, tapering end sections, wherein, in the top view, the rear suction mouth edge (3) is aligned obliquely to the front suction mouth edge (2) in the end sections.
  8. The sliding sole according to claim 7, characterized in that the middle suction mouth section extends across more than 30 % and preferably across at least 60 % of the working width of the sliding sole.
  9. The sliding sole according to claim 7 or 8, characterized in that the end sections of the suction mouth have a smaller channel depth (a) than the middle suction mouth section.
  10. The sliding sole according to one of claims 1 to 9, characterized in that the channel forming the suction mouth (1) has an undercut (10) in the flow cross section along the rear suction mouth edge (3).
EP16151171.2A 2015-01-23 2016-01-14 Sliding sole made from plastic for a vacuum cleaner nozzle Active EP3047775B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015101019.4A DE102015101019A1 (en) 2015-01-23 2015-01-23 Plastic sliding sole for a vacuum cleaner nozzle

Publications (2)

Publication Number Publication Date
EP3047775A1 EP3047775A1 (en) 2016-07-27
EP3047775B1 true EP3047775B1 (en) 2018-12-19

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ID=55129695

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EP16151171.2A Active EP3047775B1 (en) 2015-01-23 2016-01-14 Sliding sole made from plastic for a vacuum cleaner nozzle

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EP (1) EP3047775B1 (en)
DE (1) DE102015101019A1 (en)

Cited By (2)

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EP3760091A1 (en) 2019-07-02 2021-01-06 Miele & Cie. KG Sliding base, vacuum cleaner nozzle and vacuum cleaner
US11564544B2 (en) 2020-01-28 2023-01-31 New Ermes Europe S.R.L. Adapter device for a cordless electric vacuum cleaner

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EP3257417B1 (en) 2016-06-14 2023-06-14 Wessel-Werk GmbH Vacuum cleaner jet
EP3366179B1 (en) * 2017-02-23 2019-07-24 Wessel-Werk GmbH Static floor nozzle for a vacuum cleaner
US11224319B2 (en) 2017-12-11 2022-01-18 New Ermes Europe S.R.L. Base plate for a vacuum cleaner suction head for the suction of fine dust and large debris
JP1641037S (en) 2018-09-18 2019-09-09
EP3639715B1 (en) * 2018-10-15 2023-04-19 Wessel-Werk GmbH Floor nozzle for a vacuum cleaner
DE102018126367A1 (en) * 2018-10-23 2020-04-23 Wessel-Werk Gmbh Vacuum cleaner floor nozzle
USD953673S1 (en) 2020-02-17 2022-05-31 New Ermes Europe S.R.L. Head of a vacuum cleaner
FR3138289A1 (en) * 2022-07-29 2024-02-02 Seb S.A. Suction head comprising a sole equipped with a curved front sliding surface

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CH627637A5 (en) * 1978-05-03 1982-01-29 Hans Wessel Sliding base for vacuum-cleaner nozzles
DE10105371A1 (en) * 2001-02-06 2002-08-14 Wessel Werk Gmbh Suction head for household canister vacuum cleaners
DE102007009958B4 (en) * 2007-03-01 2013-08-01 Wessel-Werk Gmbh Sheet-metal sole and method for its design
FR2965165B1 (en) * 2010-09-24 2013-07-12 Seb Sa VACUUM CLEANER SCRATCH RULES
DE102011081838A1 (en) * 2010-11-05 2012-05-10 BSH Bosch und Siemens Hausgeräte GmbH Suction nozzle, process for their preparation and vacuum cleaner equipped therewith

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EP3760091A1 (en) 2019-07-02 2021-01-06 Miele & Cie. KG Sliding base, vacuum cleaner nozzle and vacuum cleaner
US11564544B2 (en) 2020-01-28 2023-01-31 New Ermes Europe S.R.L. Adapter device for a cordless electric vacuum cleaner

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Publication number Publication date
EP3047775A1 (en) 2016-07-27
DE102015101019A1 (en) 2016-07-28

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