EP1449477B1 - Nozzle for smooth floors and for textile floor coverings - Google Patents

Nozzle for smooth floors and for textile floor coverings Download PDF

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Publication number
EP1449477B1
EP1449477B1 EP04001286A EP04001286A EP1449477B1 EP 1449477 B1 EP1449477 B1 EP 1449477B1 EP 04001286 A EP04001286 A EP 04001286A EP 04001286 A EP04001286 A EP 04001286A EP 1449477 B1 EP1449477 B1 EP 1449477B1
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EP
European Patent Office
Prior art keywords
rocker arm
vacuum cleaner
housing
cleaner nozzle
transverse supports
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
EP04001286A
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German (de)
French (fr)
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EP1449477A3 (en
EP1449477A2 (en
Inventor
Dieter Kaffenberger
Thomas Lind
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Wessel Werk GmbH
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Wessel Werk GmbH
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Publication date
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Publication of EP1449477A2 publication Critical patent/EP1449477A2/en
Publication of EP1449477A3 publication Critical patent/EP1449477A3/en
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Publication of EP1449477B1 publication Critical patent/EP1449477B1/en
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Classifications

    • 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

Definitions

  • the invention relates to a vacuum cleaner nozzle for smooth floors and textile floor coverings according to the preamble of claim 1.
  • vacuum cleaner nozzles which have sealing elements which may be formed as bristle strips or elastomeric strips.
  • the sealing elements When vacuuming textile floor coverings, the sealing elements are retracted into the interior of the housing and the sliding sole rests on the floor covering. For sucking smooth floors, the sealing elements are extended with an adjusting movement of the seal carrier at the bottom of the nozzle and support the upper housing part on the ground.
  • the seal carrier is often formed as a metal plate which is arranged vertically adjustable in the upper housing part and can be lowered by means of a force acting on the support plate rocker arm against the action of return springs DE 196 28 070 A1 ).
  • the preparation of such vacuum cleaner nozzles is relatively expensive.
  • a pivotable mounting of the carrier is known about a housing-fixed pivot axis, which is disposed within the housing upper part at a rear portion.
  • a bristle strip is connected, which passes through a gap between the sliding sole and the upper housing part during a pivoting movement of the carrier.
  • the sealing function of the individual bristle strip and thus the cleaning effect when vacuuming smooth floors is limited.
  • a vacuum cleaner nozzle for smooth floors and textile floor coverings with the features of the preamble of claim 1 is known from DE 92 00 692 U1 known.
  • the vacuum cleaner nozzle comprises an upper housing part, a bottom plate and one between the upper housing part and the bottom plate arranged pivot plate, which may be constructed of injection molded plastic.
  • the pivot plate has at its rear end mouth openings, with which the pivot plate is plugged onto the stub axle.
  • the mouth openings are at webs backwards. In order to avoid bending or breaking of the webs during assembly and use of the floor nozzle, they must have sufficient material thickness. Overall, the stability of the swivel plate is in need of improvement.
  • the invention has for its object to provide a vacuum cleaner nozzle with a good cleaning effect on textile floor coverings and on smooth floors, which allows both a simple and cost-effective production, as well as having a high stability.
  • Solution to the problem and object of the invention is a vacuum cleaner nozzle for smooth floors and textile floor coverings according to claim 1.
  • the rocker consists of a truss-like plastic molding, which has a rod with cylindrical bearing surfaces, parallel profile strips for fastening the sealing elements and the rod and the profile strips connecting cross member, wherein the cross member are arranged on both sides of a suction channel, located in the Housing interior extends to an opening in the suction mouth.
  • the rocker is on pins led, which extend from the sliding sole to the upper housing part and the housing stiffen.
  • the rocker is acted upon by at least one return spring, which may be designed as a torsion spring or coil spring.
  • it is supported on coil springs which are arranged on the pin. This further simplifies the construction of the vacuum cleaner nozzle.
  • the rocker thereby has a very high reliability, especially during extension and retraction of the sealing elements, on.
  • the rocker may each have two cross members on both sides of the suction channel, wherein the shift lever is immersed in the free space between adjacent cross member and wherein between the cross members also cooperating with the shift lever pressure surfaces are arranged.
  • the rocker despite its simple construction, thereby a high stability and thus resilience. In addition, a compact construction of the nozzle is made possible.
  • the shift lever consists of a rotatably mounted shaft, at least one button designed as a footswitch and molded cams, wherein the cams act on an associated pressure surface of the rocker.
  • the shift lever is then very simple and inexpensive to produce, for example, also as a one-piece injection molded part. The construction described ensures a simple and therefore safe interaction of the shift lever and rocker.
  • the vacuum cleaner nozzle shown in the figures can be used on smooth floors and textile floor coverings and can be connected directly or with the interposition of a flexible line on the suction side of a vacuum cleaner.
  • the basic structure of the vacuum cleaner includes a housing 100 with a housing top 1 made of plastic and a plastic sliding sole 2 with a suction mouth 3 and an adjustable within the housing shell 1 swing arm 4 with strip-shaped sealing elements 5, 5 ', in the working direction in front of and behind the Suction mouth 3 are arranged.
  • the sealing elements 5, 5 ' are with a pivoting movement of the rocker 4 through openings on the underside of the housing 100 and retracted.
  • the nozzle further comprises a shift lever 6 consisting of a rotatably mounted shaft 7, at least one button formed as a step 8 and molded cam 9, each acting on a pressure surface 10 of the rocker 4, and acting on the rocker 4 return springs 11.
  • a suction channel 12 is formed, which has at one end connected to the soleplate 2 fitting 13 and is formed at the other end as a joint shell 14 of a tilting joint 15.
  • the suction channel 12 forms a projection in the interior of the upper housing part 1 and the sliding sole 2 existing housing.
  • the suction mouth 3 consists of a molded into the sliding sole 2 flow channel 16, which extends transversely to the suction channel 12 starting from a central, opening into the suction port 12 opening 17.
  • the rocker 4 is pivotally mounted within the housing upper part 1 about an axis 18 and consists of a truss-like plastic molding, the first side member a rod 19 with cylindrical bearing surfaces, for example in the form of a continuous shaft, and parallel to two the framework as further side members stiffening profile strips 20, 20 'for connection of the sealing elements 5, 5'.
  • the profiled strips 20, 20 ' are arranged in front of and behind the suction mouth 3 in the working direction, with a bristle strip 5 being connected to the front profiled strip 20 and a rubber lip 5' being connected to the rear profiled strip 20 '.
  • the bristle strip 5 passes through a gap between the sliding sole and the housing upper part 1 during a pivoting movement of the rocker 4.
  • the sealing lip 5 ' can be retracted and extended through a slot in the one-piece soleplate 2.
  • the trained with cylindrical bearing surfaces, for example as a shaft rod 19 is rotatably held in a rear direction in the working direction portion of the upper housing part 1 between the sliding sole 2 and integrally formed bearing webs 21 of the upper housing part 1.
  • the longitudinal members 19, 20, 20 ' are connected by integrally formed cross member 22, which are arranged on both sides of the suction channel 12.
  • the sliding sole 2 is fastened to the upper housing part 1 by means of non-releasable plug-in connections 23 between pin-shaped projections 24 of the upper housing part and counter-elements 25 formed on the sliding sole.
  • the counter-elements 25 are designed as stub-shaped cylindrical elements with mushroom head ( Fig. 6 ).
  • the rocker 4 is guided on two of these pin 23 formed by pins and has integrally formed support surfaces 26 for the return springs 11, each with a traversed by the associated pin guide recess 27.
  • Out Fig. 2 shows that the return springs 11 are arranged on the pins formed by the elements 24, 25 between the sliding sole 2 and the support surfaces 26 of the seal carrier 4.
  • the pin formed by connectors 23 stiffen the existing of the sole plate 2 and the upper housing part 1 housing the vacuum cleaner nozzle and stabilize the sliding sole 2.
  • a plurality of counter-elements 25 are connected to a flat portion of the sole 2, which connects in the working direction behind the suction mouth 3, arranged.
  • 2 locking projections 28, 28 ' are integrally formed on the sliding sole, which can be fixed to the connecting piece 13 of the upper housing part and to wall surfaces of the upper housing part 1 ( Fig. 1 ). From a comparative analysis in particular the Fig. 1 . 5 and 6 also shows that the opening into the suction port 12 opening 17 of the sliding sole 2 is surrounded by molded projections 29 which engage in the connecting piece 13 of the suction channel 12 and the transition between the suction mouth 3 of the sole plate 2 and the suction channel 12 of the upper housing part 1 against Seal foreign air.
  • the seal carrier on both sides of the suction channel 12 each have two cross members 22, whose distance is dimensioned so that the foot switch 8 dips into the space between adjacent cross members 22. Between the cross members 22 and the cooperating with the shift lever 6 pressure surfaces 10 are arranged.
  • the sliding sole 2 has in front of and behind the suction mouth 3 recesses, in the thread lifter strip 30, z. B. are glued from Schrägborstenvelours. Furthermore, one takes the Fig. 4 in that the tilting joint 15 has a continuous shaft axis 31, at the ends of which wheels 32 are attached.
  • the upper housing part 1, the soleplate 2, the rocker 4 and the shift lever 6 are one-piece plastic moldings, which are inexpensive to produce by injection molding and are used without machining. During assembly, the shift lever 6, the rocker 4 and the return springs 11 are positioned within the housing upper part. Subsequently, the plastic sliding sole 2 is locked to the upper housing part 1.
  • the vacuum cleaner nozzle contains no screws and can be manufactured inexpensively using fully automated assembly systems.

Description

Die Erfindung betrifft eine Staubsaugerdüse für Glattböden und textile Bodenbeläge gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a vacuum cleaner nozzle for smooth floors and textile floor coverings according to the preamble of claim 1.

Aus der Praxis sind Staubsaugerdüsen bekannt, die Dichtungselemente aufweisen, welche als Borstenstreifen oder elastomere Streifen ausgebildet sein können. Beim Saugen textiler Bodenbeläge sind die Dichtungselemente in das Gehäuseinnere eingefahren, und die Gleitsohle liegt auf dem Bodenbelag auf. Zum Saugen glatter Böden werden die Dichtungselemente mit einer Stellbewegung des Dichtungsträgers an der Unterseite der Düse ausgefahren und stützen das Gehäuseoberteil auf dem Boden ab. Der Dichtungsträger ist oft als Metallplatte ausgebildet, die im Gehäuseoberteil vertikal verstellbar angeordnet ist und mittels eines auf die Trägerplatte wirkenden Kipphebels gegen die Wirkung von Rückstellfedern absenkbar ist DE 196 28 070 A1 ). Die Herstellung derartiger Staubsaugerdüsen ist vergleichsweise aufwendig.From practice vacuum cleaner nozzles are known which have sealing elements which may be formed as bristle strips or elastomeric strips. When vacuuming textile floor coverings, the sealing elements are retracted into the interior of the housing and the sliding sole rests on the floor covering. For sucking smooth floors, the sealing elements are extended with an adjusting movement of the seal carrier at the bottom of the nozzle and support the upper housing part on the ground. The seal carrier is often formed as a metal plate which is arranged vertically adjustable in the upper housing part and can be lowered by means of a force acting on the support plate rocker arm against the action of return springs DE 196 28 070 A1 ). The preparation of such vacuum cleaner nozzles is relatively expensive.

Aus der Druckschrift DE 197 38 046 A1 ist eine schwenkbewegliche Lagerung des Trägers um eine gehäusefeste Schwenkachse bekannt, die innerhalb des Gehäuseoberteils an einem rückwärtigen Abschnitt angeordnet ist. An den als Schwinge ausgebildeten Dichtungsträger ist ein Borstenstreifen angeschlossen, der bei einer Schwenkbewegung des Trägers einen Spalt zwischen der Gleitsohle und dem Gehäuseoberteil durchfasst. Die Dichtungsfunktion des einzelnen Borstenstreifens und damit die Reinigungswirkung beim Saugen von Glattböden ist jedoch begrenzt.From the publication DE 197 38 046 A1 a pivotable mounting of the carrier is known about a housing-fixed pivot axis, which is disposed within the housing upper part at a rear portion. At the trained as a rocker seal carrier a bristle strip is connected, which passes through a gap between the sliding sole and the upper housing part during a pivoting movement of the carrier. However, the sealing function of the individual bristle strip and thus the cleaning effect when vacuuming smooth floors is limited.

Eine Staubsaugerdüse für Glattböden und textile Bodenbeläge mit den Merkmalen des Oberbegriffes des Patentanspruches 1 ist aus der DE 92 00 692 U1 bekannt. Die Staubsaugerdüse umfasst ein oberes Gehäuseteil, eine Bodenplatte und eine zwischen dem oberen Gehäuseteil und der Bodenplatte angeordnete Schwenkplatte, die aus Spritzgusskunststoff aufgebaut sein kann. Die Schwenkplatte weist an ihrem rückwärtigen Ende Maulöffnungen auf, mit denen die Schwenkplatte auf Achsstummel aufsteckbar ist. Die Maulöffnungen stehen an Stegen nach hinten ab. Um bei der Montage und der Benutzung der Bodendüse ein Biegen oder Brechen der Stege zu vermeiden, müssen diese eine ausreichende Materialstärke aufweisen. Insgesamt ist die Stabilität der Schwenkplatte verbesserungsbedürftig.A vacuum cleaner nozzle for smooth floors and textile floor coverings with the features of the preamble of claim 1 is known from DE 92 00 692 U1 known. The vacuum cleaner nozzle comprises an upper housing part, a bottom plate and one between the upper housing part and the bottom plate arranged pivot plate, which may be constructed of injection molded plastic. The pivot plate has at its rear end mouth openings, with which the pivot plate is plugged onto the stub axle. The mouth openings are at webs backwards. In order to avoid bending or breaking of the webs during assembly and use of the floor nozzle, they must have sufficient material thickness. Overall, the stability of the swivel plate is in need of improvement.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Staubsaugerdüse mit einer guten Reinigungswirkung auf textilen Bodenbelägen und auf Glattböden anzugeben, die sowohl eine einfache und kostengünstige Herstellung ermöglicht, als auch eine hohe Stabilität aufweist.Against this background, the invention has for its object to provide a vacuum cleaner nozzle with a good cleaning effect on textile floor coverings and on smooth floors, which allows both a simple and cost-effective production, as well as having a high stability.

Lösung der Aufgabe und Gegenstand der Erfindung ist eine Staubsaugerdüse für Glattböden und textile Bodenbeläge gemäß Patentanspruch 1.Solution to the problem and object of the invention is a vacuum cleaner nozzle for smooth floors and textile floor coverings according to claim 1.

Durch die in Arbeitsrichtung vor und hinter dem Saugmund angeordneten Dichtungselemente wird beim Saugen von Glattböden eine sehr gute Dichtungswirkung erreicht, so dass auch auf diesem Untergrund eine gute Reinigungswirkung der erfindungsgemäßen Staubsaugerdüse vorliegt.By arranged in the direction of work before and behind the suction mouth sealing elements a very good sealing effect is achieved when vacuuming smooth floors, so that there is a good cleaning effect of the vacuum cleaner nozzle according to the invention also on this ground.

Gemäß einer bevorzugten Ausführung der Erfindung besteht die Schwinge aus einem fachwerkartigen Kunststoffformteil, welches einen Stab mit zylindrischen Lagerflächen, dazu parallele Profilleisten zur Befestigung der Dichtungselemente sowie den Stab und die Profilleisten verbindende Querträger aufweist, wobei die Querträger beidseits eines Saugkanals angeordnet sind, der sich im Gehäuseinnem bis zu einer Öffnung im Saugmund erstreckt. Dies erlaubt eine einfache und kostengünstige Herstellung der Schwinge, beispielsweise als einstückiges Spritzgussformteil. Vorzugsweise ist die Schwinge an Zapfen geführt, die sich von der Gleitsohle bis zum Gehäuseoberteil erstrecken und das Gehäuse verstreifen. Die Schwinge ist von mindestens einer Rückstellfeder beaufschlagt, die als Torsionsfeder oder Schraubenfeder ausgeführt sein kann. Vorzugsweise ist sie an Schraubenfedern abgestützt, die auf den Zapfen angeordnet sind. Hierdurch wird die Konstruktion der Staubsaugerdüse weiter vereinfacht. Ferner weist die Schwinge hierdurch eine sehr hohe Funktionssicherheit, insbesondere beim Aus- und Einfahren der Dichtungselemente, auf.According to a preferred embodiment of the invention, the rocker consists of a truss-like plastic molding, which has a rod with cylindrical bearing surfaces, parallel profile strips for fastening the sealing elements and the rod and the profile strips connecting cross member, wherein the cross member are arranged on both sides of a suction channel, located in the Housing interior extends to an opening in the suction mouth. This allows a simple and inexpensive production of the rocker, for example as a one-piece injection molded part. Preferably, the rocker is on pins led, which extend from the sliding sole to the upper housing part and the housing stiffen. The rocker is acted upon by at least one return spring, which may be designed as a torsion spring or coil spring. Preferably, it is supported on coil springs which are arranged on the pin. This further simplifies the construction of the vacuum cleaner nozzle. Furthermore, the rocker thereby has a very high reliability, especially during extension and retraction of the sealing elements, on.

Die Schwinge kann beidseits des Saugkanals jeweils zwei Querträger aufweisen, wobei der Schalthebel in den Freiraum zwischen benachbarten Querträger eintaucht und wobei zwischen den Querträgern auch mit dem Schalthebel zusammenwirkende Druckflächen angeordnet sind. Die Schwinge weist trotz einfacher Konstruktion hierdurch eine hohe Stabilität und damit Belastbarkeit auf. Darüber hinaus wird ein kompakter Aufbau der Düse ermöglicht.The rocker may each have two cross members on both sides of the suction channel, wherein the shift lever is immersed in the free space between adjacent cross member and wherein between the cross members also cooperating with the shift lever pressure surfaces are arranged. The rocker, despite its simple construction, thereby a high stability and thus resilience. In addition, a compact construction of the nozzle is made possible.

Vorzugsweise besteht der Schalthebel aus einer drehbar gelagerten Welle, mindestens einer als Trittschalter ausgebildeten Schaltfläche sowie angeformten Nocken, wobei die Nocken auf eine zugeordnete Druckfläche der Schwinge wirken. Der Schalthebel ist dann sehr einfach und kostengünstig herstellbar, beispielsweise ebenfalls als einstückiges Spritzgussformteil. Die beschriebene Konstruktion gewährleistet ein einfaches und daher sicheres Zusammenwirken von Schalthebel und Schwinge.Preferably, the shift lever consists of a rotatably mounted shaft, at least one button designed as a footswitch and molded cams, wherein the cams act on an associated pressure surface of the rocker. The shift lever is then very simple and inexpensive to produce, for example, also as a one-piece injection molded part. The construction described ensures a simple and therefore safe interaction of the shift lever and rocker.

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

Fig. 1
eine Vorderansicht der erfindungsgemäßen Staubsaugerdüse im Schnitt,
Fig. 2
einen Längsschnitt durch den Gegenstand der Fig. 1 in der Schnittebene A-A
Fig. 3
den Schnitt B-B aus Fig. 1,
Fig. 4
eine Explosionsdarstellung der erfindungsgemäßen Staubsaugerdüse,
Fig. 5
eine Einzelteilzeichnung der Gleitsohle in einer gegenüber Fig. 4 vergrößerten Darstellung,
Fig. 6
den Schnitt C-C aus Fig. 5
Fig. 7
eine Innenansicht des Gehäuseoberteils der Staubsaugerdüse,
Fig. 8
eine Einzelteilzeichnung des Dichtungsträgers in einer gegenüber Fig. 4 vergrößerten Darstellung.
In the following the invention will be explained in detail with reference to a drawing showing only one embodiment. They show schematically:
Fig. 1
a front view of the vacuum cleaner nozzle according to the invention in section,
Fig. 2
a longitudinal section through the subject of Fig. 1 in the section plane AA
Fig. 3
the cut BB off Fig. 1 .
Fig. 4
an exploded view of the vacuum cleaner nozzle according to the invention,
Fig. 5
an item drawing of the sliding sole in one opposite Fig. 4 enlarged view,
Fig. 6
the section CC off Fig. 5
Fig. 7
an interior view of the housing upper part of the vacuum cleaner nozzle,
Fig. 8
a single part drawing of the seal carrier in one opposite Fig. 4 enlarged view.

Die in den Figuren dargestellte Staubsaugerdüse ist auf Glattböden und textilen Bodenbeläge einsetzbar und unmittelbar oder unter Zwischenschaltung einer flexiblen Leitung an der Saugseite eines Staubsaugergerätes anschließbar. Zum grundsätzlichen Aufbau der Staubsaugerdüse gehören ein Gehäuse 100 mit einem Gehäuseoberteil 1 aus Kunststoff und einer Kunststoff-Gleitsohle 2 mit einem Saugmund 3 sowie eine innerhalb des Gehäuseoberteils 1 verstellbeweglich angeordnete Schwinge 4 mit streifenförmigen Dichtungselementen 5, 5', die in Arbeitsrichtung vor und hinter dem Saugmund 3 angeordnet sind. Die Dichtungselemente 5, 5' sind mit einer Schwenkbewegung der Schwinge 4 durch Öffnungen an der Unterseite des Gehäuses 100 ein- und ausfahrbar. Die Düse umfasst ferner einen Schalthebel 6 bestehend aus einer drehbar gelagerten Welle 7, mindestens einer als Trittschalter 8 ausgebildeten Schaltfläche sowie angeformten Nocken 9, die jeweils auf eine Druckfläche 10 der Schwinge 4 wirken, und auf die Schwinge 4 wirkende Rückstellfedern 11. An das Gehäuseoberteil 1 ist ein Saugkanal 12 angeformt, der an einem Ende ein mit der Gleitsohle 2 verbundenes Anschlussstück 13 aufweist und an dem anderen Ende als Gelenkschale 14 eines Kippgelenkes 15 ausgebildet ist. Der Saugkanal 12 bildet einen Vorsprung im Innern des aus dem Gehäuseoberteil 1 und der Gleitsohle 2 bestehenden Gehäuses. Der Saugmund 3 besteht aus einem in die Gleitsohle 2 eingeformten Strömungskanal 16, der sich von einer mittigen, in den Saugkanal 12 mündenden Öffnung 17 ausgehend quer zum Saugkanal 12 erstreckt.The vacuum cleaner nozzle shown in the figures can be used on smooth floors and textile floor coverings and can be connected directly or with the interposition of a flexible line on the suction side of a vacuum cleaner. The basic structure of the vacuum cleaner includes a housing 100 with a housing top 1 made of plastic and a plastic sliding sole 2 with a suction mouth 3 and an adjustable within the housing shell 1 swing arm 4 with strip-shaped sealing elements 5, 5 ', in the working direction in front of and behind the Suction mouth 3 are arranged. The sealing elements 5, 5 'are with a pivoting movement of the rocker 4 through openings on the underside of the housing 100 and retracted. The nozzle further comprises a shift lever 6 consisting of a rotatably mounted shaft 7, at least one button formed as a step 8 and molded cam 9, each acting on a pressure surface 10 of the rocker 4, and acting on the rocker 4 return springs 11. To the upper housing part 1, a suction channel 12 is formed, which has at one end connected to the soleplate 2 fitting 13 and is formed at the other end as a joint shell 14 of a tilting joint 15. The suction channel 12 forms a projection in the interior of the upper housing part 1 and the sliding sole 2 existing housing. The suction mouth 3 consists of a molded into the sliding sole 2 flow channel 16, which extends transversely to the suction channel 12 starting from a central, opening into the suction port 12 opening 17.

Die Schwinge 4 ist innerhalb des Gehäuseoberteils 1 um eine Achse 18 verschwenkbar angeordnet und besteht aus einem fachwerkartigen Kunststoffformteil, das als ersten Längsträger einen Stab 19 mit zylindrischen Lagerflächen, z.B. in Form einer durchgehenden Welle, und parallel dazu zwei das Fachwerk als weitere Längsträger versteifende Profilleisten 20, 20' zum Anschluss der Dichtungselemente 5, 5' aufweist. Die Profilleisten 20, 20' sind in Arbeitsrichtung vor und hinter dem Saugmund 3 angeordnet, wobei an die vordere Profilleiste 20 ein Borstenstreifen 5 und an die hintere Profilleiste 20' eine Gummilippe 5' angeschlossen sind. Der Borstenstreifen 5 durchfasst bei einer Schwenkbewegung der Schwinge 4 einen Spalt zwischen der Gleitsohle und dem Gehäuseoberteil 1. Die Dichtungslippe 5' ist durch einen Schlitz in der einteilig ausgebildeten Gleitsohle 2 ein- und ausfahrbar. Der mit zylindrischen Lagerflächen z.B. als Welle ausgebildete Stab 19 ist in einem in Arbeitsrichtung rückwärtigen Abschnitt des Gehäuseoberteils 1 zwischen der Gleitsohle 2 und angeformten Lagerstegen 21 des Gehäuseoberteils 1 drehbeweglich gehalten. Die Längsträger 19, 20, 20' sind durch einteilig angeformte Querträger 22 verbunden, die beiderseits des Saugkanals 12 angeordnet sind.The rocker 4 is pivotally mounted within the housing upper part 1 about an axis 18 and consists of a truss-like plastic molding, the first side member a rod 19 with cylindrical bearing surfaces, for example in the form of a continuous shaft, and parallel to two the framework as further side members stiffening profile strips 20, 20 'for connection of the sealing elements 5, 5'. The profiled strips 20, 20 'are arranged in front of and behind the suction mouth 3 in the working direction, with a bristle strip 5 being connected to the front profiled strip 20 and a rubber lip 5' being connected to the rear profiled strip 20 '. The bristle strip 5 passes through a gap between the sliding sole and the housing upper part 1 during a pivoting movement of the rocker 4. The sealing lip 5 'can be retracted and extended through a slot in the one-piece soleplate 2. The trained with cylindrical bearing surfaces, for example as a shaft rod 19 is rotatably held in a rear direction in the working direction portion of the upper housing part 1 between the sliding sole 2 and integrally formed bearing webs 21 of the upper housing part 1. The longitudinal members 19, 20, 20 'are connected by integrally formed cross member 22, which are arranged on both sides of the suction channel 12.

Die Gleitsohle 2 ist an dem Gehäuseoberteil 1 durch nicht lösbare Steckverbindungen 23 zwischen zapfenförmigen Vorsprüngen 24 des Gehäuseoberteils und an die Gleitsohle angeformten Gegenelementen 25 befestigt. Die Gegenelemente 25 sind als stummelförmige zylindrische Elemente mit Pilzkopf ausgebildet (Fig. 6).The sliding sole 2 is fastened to the upper housing part 1 by means of non-releasable plug-in connections 23 between pin-shaped projections 24 of the upper housing part and counter-elements 25 formed on the sliding sole. The counter-elements 25 are designed as stub-shaped cylindrical elements with mushroom head ( Fig. 6 ).

Die Schwinge 4 ist an zwei dieser durch Steckverbindungen 23 gebildeten Zapfen geführt und weist angeformte Abstützflächen 26 für die Rückstellfedern 11 mit jeweils einer von dem zugeordneten Zapfen durchfassten Führungsausnehmung 27 auf. Aus Fig. 2 geht hervor, dass die Rückstellfedern 11 auf den von den Elementen 24, 25 gebildeten Zapfen zwischen der Gleitsohle 2 und den Abstützflächen 26 des Dichtungsträgers 4 angeordnet sind. Die durch Steckverbindungen 23 gebildeten Zapfen versteifen das aus der Gleitsohle 2 und dem Gehäuseoberteil 1 bestehende Gehäuse der Staubsaugerdüse und stabilisieren die Gleitsohle 2. Eine Mehrzahl der Gegenelemente 25 sind an einem flächigen Abschnitt der Gleitsohle 2, der sich in Arbeitsrichtung hinter dem Saugmund 3 anschließt, angeordnet. Zusätzlich sind an der Gleitsohle 2 Rastvorsprünge 28, 28' angeformt, die an dem Anschlussstück 13 des Gehäuseoberteils und an Wandflächen des Gehäuseoberteils 1 fixierbar sind (Fig. 1). Aus einer vergleichenden Betrachtung insbesondere der Fig. 1, 5 und 6 geht ferner hervor, dass die in die Saugkanal 12 mündende Öffnung 17 der Gleitsohle 2 von angeformten Vorsprüngen 29 umgeben ist, die in das Anschlussstück 13 des Saugkanals 12 eingreifen und den Übergang zwischen dem Saugmund 3 der Gleitsohle 2 und dem Saugkanal 12 des Gehäuseoberteils 1 gegen Fremdluft abdichten.The rocker 4 is guided on two of these pin 23 formed by pins and has integrally formed support surfaces 26 for the return springs 11, each with a traversed by the associated pin guide recess 27. Out Fig. 2 shows that the return springs 11 are arranged on the pins formed by the elements 24, 25 between the sliding sole 2 and the support surfaces 26 of the seal carrier 4. The pin formed by connectors 23 stiffen the existing of the sole plate 2 and the upper housing part 1 housing the vacuum cleaner nozzle and stabilize the sliding sole 2. A plurality of counter-elements 25 are connected to a flat portion of the sole 2, which connects in the working direction behind the suction mouth 3, arranged. In addition, 2 locking projections 28, 28 'are integrally formed on the sliding sole, which can be fixed to the connecting piece 13 of the upper housing part and to wall surfaces of the upper housing part 1 ( Fig. 1 ). From a comparative analysis in particular the Fig. 1 . 5 and 6 also shows that the opening into the suction port 12 opening 17 of the sliding sole 2 is surrounded by molded projections 29 which engage in the connecting piece 13 of the suction channel 12 and the transition between the suction mouth 3 of the sole plate 2 and the suction channel 12 of the upper housing part 1 against Seal foreign air.

Im Ausführungsbeispiel weist der Dichtungsträger beiderseits des Saugkanals 12 jeweils zwei Querträger 22 auf, deren Abstand so bemessen ist, dass der Trittschalter 8 in den Freiraum zwischen benachbarten Querträgern 22 eintaucht. Zwischen den Querträgern 22 sind auch die mit dem Schalthebel 6 zusammenwirkenden Druckflächen 10 angeordnet.In the exemplary embodiment, the seal carrier on both sides of the suction channel 12 each have two cross members 22, whose distance is dimensioned so that the foot switch 8 dips into the space between adjacent cross members 22. Between the cross members 22 and the cooperating with the shift lever 6 pressure surfaces 10 are arranged.

Die Gleitsohle 2 weist vor und hinter dem Saugmund 3 Vertiefungen auf, in die Fadenheberstreifen 30, z. B. aus Schrägborstenvelours eingeklebt sind. Ferner entnimmt man der Fig. 4, dass das Kippgelenk 15 eine durchgehende Wellenachse 31 aufweist, an deren Enden Laufräder 32 aufgesteckt sind.The sliding sole 2 has in front of and behind the suction mouth 3 recesses, in the thread lifter strip 30, z. B. are glued from Schrägborstenvelours. Furthermore, one takes the Fig. 4 in that the tilting joint 15 has a continuous shaft axis 31, at the ends of which wheels 32 are attached.

Das Gehäuseoberteil 1, die Gleitsohle 2, die Schwinge 4 sowie der Schalthebel 6 sind einstückige Kunststoffformteile, die im Spritzgussverfahren kostengünstig herstellbar sind und ohne spanende Bearbeitung verwendet werden. Bei der Montage werden der Schalthebel 6, die Schwinge 4 sowie die Rückstellfedern 11 innerhalb des Gehäuseoberteils positioniert. Anschließend wird die Kunststoff-Gleitsohle 2 mit dem Gehäuseoberteil 1 verrastet. Die Staubsaugerdüse enthält keine Schrauben und kann unter Verwendung vollautomatischer Montageanlagen kostengünstig gefertigt werden.The upper housing part 1, the soleplate 2, the rocker 4 and the shift lever 6 are one-piece plastic moldings, which are inexpensive to produce by injection molding and are used without machining. During assembly, the shift lever 6, the rocker 4 and the return springs 11 are positioned within the housing upper part. Subsequently, the plastic sliding sole 2 is locked to the upper housing part 1. The vacuum cleaner nozzle contains no screws and can be manufactured inexpensively using fully automated assembly systems.

Claims (5)

  1. Vacuum cleaner nozzle for smooth floors and textile floor coverings comprising
    a housing (100) consisting of a housing upper part (1) and a sliding base plate (2),
    a rocker arm (4) which is rotatably mounted inside the housing (100) on a rearward section in the working direction, which is configured as a plastic moulded part, and
    a switch lever (6) for actuating the rocker arm (4),
    wherein strip-shaped sealing elements (5, 5') are attached to the rocker arm (4), which are disposed in the working direction before and after a suction mouth (3) moulded into the sliding base plate (2) and which can be moved in and out through openings on the under side of the housing (100) with a pivoting movement of the rocker arm (4), characterised in that the rocker arm (4) is configured in the manner of a truss frame and comprises a rod (19) with cylindrical bearing surfaces, parallel profile strips (20, 20') for fastening the sealing elements (5, 5') as well as transverse supports (22) connecting the profile strips (20, 20'), wherein the transverse supports (22) are arranged on both sides of a suction channel (12) which extends in the interior of the housing as far as an opening in the suction mouth (3).
  2. The vacuum cleaner nozzle according to claim 1, characterised in that the rocker arm (4) is guided on pins which extend from the sliding base plate (2) as far as the housing upper part (1) and stiffen the housing (100).
  3. The vacuum cleaner nozzle according to claim 2, characterised in that the rocker arm (4) is supported on restoring springs (11) which are arranged on the pins.
  4. The vacuum cleaner nozzle according to any one of claims 1 to 3, characterised in that the rocker arm (4) has respectively two transverse supports (22) on both sides of the suction channel (12), wherein the switch lever (6) dips into the free space between neighbouring transverse supports (22) and wherein pressure faces (10) cooperating with the switch lever (6) are also arranged between the transverse supports (22).
  5. The vacuum cleaner nozzle according to any one of claims 1 to 6, characterised in that the switch lever (6) consists of a rotatably mounted shaft (7), at least one switching surface (8) configured as a step switch as well as pimples (9) formed thereon, wherein the pimples (9) act on an assigned pressure face (10) of the rocker arm (4).
EP04001286A 2003-02-20 2004-01-22 Nozzle for smooth floors and for textile floor coverings Expired - Lifetime EP1449477B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10307176 2003-02-20
DE10307176 2003-02-20

Publications (3)

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EP1449477A2 EP1449477A2 (en) 2004-08-25
EP1449477A3 EP1449477A3 (en) 2007-12-05
EP1449477B1 true EP1449477B1 (en) 2009-03-11

Family

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Country Link
US (1) US7251856B2 (en)
EP (1) EP1449477B1 (en)
CN (1) CN1296003C (en)
DE (4) DE10312905B4 (en)
HK (1) HK1066710A1 (en)

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Also Published As

Publication number Publication date
EP1449477A3 (en) 2007-12-05
DE10312905B4 (en) 2005-01-13
CN1296003C (en) 2007-01-24
CN1522654A (en) 2004-08-25
DE10312906B4 (en) 2006-05-04
DE502004009109D1 (en) 2009-04-23
HK1066710A1 (en) 2005-04-01
DE502004007933D1 (en) 2008-10-09
DE10312906A1 (en) 2004-09-09
EP1449477A2 (en) 2004-08-25
US20040216267A1 (en) 2004-11-04
US7251856B2 (en) 2007-08-07
DE10312905A1 (en) 2004-09-09

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