EP3285631B1 - Manually-displaceable cleaning device having counter-rotatable rollers - Google Patents

Manually-displaceable cleaning device having counter-rotatable rollers Download PDF

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Publication number
EP3285631B1
EP3285631B1 EP16719364.8A EP16719364A EP3285631B1 EP 3285631 B1 EP3285631 B1 EP 3285631B1 EP 16719364 A EP16719364 A EP 16719364A EP 3285631 B1 EP3285631 B1 EP 3285631B1
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EP
European Patent Office
Prior art keywords
rollers
cleaning device
profile
base body
roller
Prior art date
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EP16719364.8A
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German (de)
French (fr)
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EP3285631A1 (en
Inventor
Norbert Weis
Daniel BAUMGART
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Carl Freudenberg KG
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Carl Freudenberg KG
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Priority to PL16719364T priority Critical patent/PL3285631T3/en
Publication of EP3285631A1 publication Critical patent/EP3285631A1/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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/22—Floor-sweeping machines, hand-driven
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24—Floor-sweeping machines, motor-driven
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools

Definitions

  • the invention relates to a manually movable cleaning device according to the preamble of claim 1.
  • a cleaning device which is motor-assisted and can be moved manually by a handle.
  • the cleaning device has two counter-rotating rollers, the rotation speeds of which can be set independently of one another.
  • the rollers are provided with brushes.
  • the rollers are arranged adjacently, with a wall structure being arranged between the rollers. Dirt particles thrown up by a roller can bounce off the wall structure and be deflected. In addition, the rollers can be removed from the base body for cleaning.
  • the brushes are even arranged at a distance from one another in such a way that a sufficiently strong suction vacuum above the rollers can only be generated with greater expenditure on equipment.
  • the formation of brushes is also rather a hindrance to building up a suction vacuum.
  • the invention is therefore based on the object of specifying a cleaning device with which, with a structurally simple structure, optimal conveyance of particles and the air surrounding them is achieved in a collecting container and in which a strong suction vacuum that may support this conveyance can be generated without any problems.
  • the present invention achieves the aforementioned object by the features of claim 1.
  • a cleaning device comprises a base body and a handle with which an operating person can move the cleaning device on a surface to be cleaned, two rollers rotatable in opposite directions being accommodated in the base body so that both rollers come into contact with the floor to be cleaned.
  • the rollers are not separated by a wall structure, so that they act on a common longitudinal gap on both sides.
  • the rollers are arranged in such a way that they enclose a common air gap.
  • the rollers are directly adjacent to one another.
  • rollers Only a relatively narrow longitudinal gap is provided between the rollers, which allows the rollers on both sides of the longitudinal gap to interact in the same direction with fluidized and / or sucked media such as air or dirt particles. This effect is supported in particular by the rollers driven in opposite directions.
  • both rollers come into contact with the floor to be cleaned, it is possible to prevent dirt particles from being thrown through the transmission of impulses under the base body.
  • a cleaning device is specified with which, with a structurally simple structure, optimal conveyance of particles and the air surrounding them is achieved in a collecting container and in which a strong suction vacuum that may support this conveyance can be generated without any problems.
  • the handle is preferably connected to the base body in an articulated manner.
  • the joint can be designed as a universal joint.
  • the cleaning device is driven manually.
  • electrical drive means for the rollers can be dispensed with.
  • the rollers are preferably driven by means of an electric motor.
  • an electric motor and an energy store, preferably an accumulator are arranged in the base body.
  • the power transmission to the rollers takes place preferably via a traction drive, for example via a toothed belt.
  • rollers are the same size, they throw dirt particles upwards. In this case, the dirt particles can at least partially fall straight down again and collect in an undesirable manner above the longitudinal gap between the rollers.
  • the rollers could have different diameters. This allows dirt particles to be directed in a preferred direction which deviates from the orthogonal to the surface to be cleaned.
  • An inclined preferred direction enables the base body to have a low overall height, since the dirt particles can be guided into a collecting container at an angle.
  • the diameter ratio of the rollers can be between 7: 6 and 12: 6, preferably 8: 6.
  • the larger roller has a diameter of 40 mm and the smaller roller has a diameter of 30 mm.
  • the roller with the larger diameter is preferably assigned to the front edge of the base body.
  • the roller with the smaller diameter is arranged behind the larger roller and closer to the collecting container, viewed from the front edge of the base body. In this configuration, the dirt particles picked up obliquely backwards into the collecting container arranged in the base body. It was also found that the larger roller loosens dirt adhering to the floor to be cleaned better than the smaller roller.
  • the width of a longitudinal gap between the rollers could be in the range 0.5 mm to 15 mm, preferably in the range 1 mm to 10 mm. This results in a high delivery rate and a high suction vacuum in the area above the longitudinal gap. In this way, dirt particles can be conveyed and sucked in very well.
  • rollers are profiled to further improve the conveying properties and interlock in the respective profiling.
  • the outer surface of the rollers is provided with a profile.
  • a profile could be designed like a shovel.
  • Angle of profile structures, preferably angle of profile lamellas, relative to the outer surface of a roller have a decisive influence on the funding effect.
  • a kind of shovel has a particularly good conveying effect.
  • the profile can be formed by slats.
  • the lamellae preferably run in the longitudinal direction of the rollers. To improve the cleaning effect, it is advantageous if the lamellae are elastically deformable.
  • at least the lamellae can be made from a thermoplastic elastomer (TPE).
  • the cleaning effect is further improved if the slats are V-shaped.
  • the tip of the V-shaped lamellae is preferably arranged approximately in the middle of the roller.
  • the lamellae In the region of the smallest distance between the rollers, the lamellae can only be separated from one another by a gap running in the longitudinal direction.
  • the gap width is 1 mm.
  • An air chamber can form between the lamellae and the surfaces of the rollers facing one another. At least larger particles are trapped in the air chamber and conveyed in the direction of the collecting container.
  • the outer surface of at least one roller could at least partially not be provided with bristles or bristle bundles.
  • Bundles of bristles cannot close off a closed volume in a space between the two rollers. There are always gaps between the bristles of the bristle bundles, by which a pumping effect is reduced. Both rollers therefore preferably have no bristles or bristle bundles.
  • the width of the longitudinal gap in profiled rollers is defined as follows: There are two profile radii for profiled rollers based on their axes of rotation, an outer profile radius ending at the top of the profile and an inner profile radius ending at the foot of the profile.
  • a width of the longitudinal gap of 1 mm would mean that in the case of a profile increase-to-gap synchronization, a distance of 1 mm remains from the radially outermost point of the profile to the base of the opposite roller.
  • the profiles of the rollers then interlock, creating a good conveying effect or pumping effect.
  • At least one roller could be resiliently mounted. This allows the rollers to hit the surface to be cleaned and thereby remove dirt particles from it.
  • the rollers can be deformed at least in sections.
  • the rollers can be provided with a foam core at least in sections. Due to the deformable configuration, the rollers can adapt to the floor to be cleaned, so that it is always ensured that both rollers are in contact with the floor to be cleaned, at least in the area of the profile.
  • the rollers can be arranged in the base body in such a way that the profile or the lamellae are deformed in the contact area with the floor to be cleaned and thus rest against the floor to be cleaned with pretension.
  • rollers could be rotatable at such speeds that the speeds are the same at their radially outermost points.
  • dirt particles that are thrown from one roller in the direction of the other roller are effectively transported on by the respective opposite roller.
  • any profiles can interlock synchronously.
  • a smaller roller therefore rotates at a correspondingly higher speed than a larger opposite roller.
  • the rollers in this embodiment have a corresponding peripheral speed.
  • rollers alternatively have the same speed.
  • the rollers are preferably operatively connected.
  • the rollers can also be connected via a traction drive or alternatively via gears.
  • the translation can then be selected so that both rollers have the same peripheral speed or, alternatively, the same rotational speed.
  • a preferably angled impact surface could be arranged above the rollers and / or the longitudinal gap. This allows the thrown dirt particles to be steered.
  • the impact surface is provided above the rollers in the housing. This supports the guiding of the dirt particles in a preferred direction, as is generated by rollers of different sizes. The conveying effect of the suction vacuum is also supported in an advantageous manner by the impact surface.
  • the impact surface is preferably curved.
  • the shape of the impact surface can correspond to the shape of the rollers. Due to the curved design, the dirt particles are safely in the Collecting container passed. The curved shape prevents the dirt particles from receiving an impulse when they come into contact with the impact surface, by means of which the dirt particles are thrown out of the cleaning device again.
  • a ventilation device could be provided in the area behind the rollers. If no suction vacuum acts or should act, it can be advantageous to provide ventilation, preferably in an area behind the rollers, since the rollers can generate an air flow into the cleaning device. An undesirable pressure build-up caused by the pumping action of the rollers can thus be compensated for.
  • Gaps between the rollers and an enclosing housing could preferably be smaller at at least one point than the longitudinal gap between the rollers. Otherwise the conveyed medium can easily escape in the opposite direction. In addition, larger gaps between the housing and the rollers make it difficult to build up a suction vacuum behind the rollers.
  • the gaps between the housing and the rollers are at least partially closed by a low-friction seal touching the rollers.
  • This seal can be implemented in the form of a flexible lip or by further rollers or by a continuous bristle curtain. With this seal, any particles adhering to the rollers are also stripped off.
  • Fig. 1 shows a cleaning device which comprises a base body 1 and a handle 2 with which an operating person can move the cleaning device on a surface to be cleaned.
  • the handle 2 is connected to the base body 1 in an articulated manner.
  • Two counter-rotating rollers 3a, 3b are accommodated in the base body 1.
  • the rollers 3a, 3b are arranged in such a way that they act on a narrow, common longitudinal gap 6 on both sides.
  • the rollers 3a, 3b are driven by an electric motor which is arranged in the base body 1 together with an accumulator.
  • the rollers 3a, 3b are driven in such a way that both rollers 3a, 3b have the same peripheral speed.
  • rollers 3a, 3b are arranged in such a way that they are only separated by a common air gap and / or a longitudinal gap 6. Both rollers 3a, 3b come into contact with the floor to be cleaned.
  • Fig. 2 shows that the rollers 3a, 3b have different diameters r1, r2.
  • the roller 3b assigned to the front edge of the base body 1 has a diameter r2 of 40 mm and the roller 3a arranged behind it has a diameter r1 of 30 mm.
  • dirt particles can be directed in a preferred direction 4 which deviates from the orthogonal to the surface to be cleaned.
  • An inclined preferred direction 4 enables the base body 1 to have a low overall height, since the dirt particles can be guided into a collecting container 5 at an angle.
  • the collecting container 5 is arranged in the base body 1 and can be removed from the base body 1 for emptying by means of a handle.
  • the width of the longitudinal gap 6 between the rollers 3a, 3b is 1 mm. This brings about a particularly good conveying effect in relation to the medium to be transported, namely dirt particles and / or air.
  • a high negative pressure above the longitudinal gap 6 is also achieved through a suitable narrowing of the longitudinal gap 6, which leads to a rapid air flow through the longitudinal gap 6 and thus to a good pick-up of dust and dirt particles from the floor.
  • a bounce surface 8 is arranged above the rollers 3a, 3b and the longitudinal gap 6.
  • the impact surface 8 is curved and follows the contour of the rollers 3a, 3b.
  • the impact surface 8 forms part of the base body 1, namely part of the housing cover.
  • Fig. 3 shows that the jacket surface of at least one roller 3 a is provided with a profile 9.
  • the profile 9 could develop a pumping effect.
  • the profile 9 is designed like a shovel.
  • the rollers 3a, 3b are provided with lamellae, which are elastically deformable.
  • the rollers 3a, 3b in sections have a core made of deformable foam. As a result, the rollers 3a, 3b are deformable and adapt to the floor to be cleaned.
  • the lamellae of both rollers 3a, 3b always come into contact with the floor to be cleaned, the lamellae resting against the floor to be cleaned with pretensioning and deforming in sections.
  • the lamellae run in the longitudinal direction of the rollers and are V-shaped.
  • the outer surfaces of the two rollers 3a, 3b are completely not provided with bristles or bristle bundles.
  • An air chamber 9c can arise between two profile lamellas 9a, 9b.
  • the profile lamellae 9a are arranged at an angle and protrude like a secant from the outer surface of the roller 3a.
  • the profile lamellae 9b are not arranged at an angle and, starting from the axis of rotation of the roller 3b, protrude radially outward in a star shape without inclination.
  • At least one roller 3a, 3b could be resiliently mounted. As a result, the rollers 3a, 3b can hit the surface to be cleaned and thereby remove dirt particles from it.
  • the rollers 3a, 3b can be rotated at such speeds that the speeds are the same at their radially outermost points.

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  • Cleaning In General (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Description

Technisches GebietTechnical area

Die Erfindung betrifft ein händisch verfahrbares Reinigungsgerät gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a manually movable cleaning device according to the preamble of claim 1.

Stand der TechnikState of the art

Aus der US 8 443 478 B1 ist ein Reinigungsgerät bekannt, welches motorunterstützt durch einen Stiel händisch verfahrbar ist. Das Reinigungsgerät weist zwei gegenläufige Walzen auf, deren Rotationsgeschwindigkeiten unabhängig voneinander einstellbar sind. Die Walzen sind mit Bürsten versehen. Die Walzen sind benachbart angeordnet, wobei zwischen den Walzen eine Wandstruktur angeordnet ist. Von der Wandstruktur können von einer Walze aufgeschleuderte Schmutzpartikel abprallen und abgelenkt werden. Überdies sind die Walzen zur Reinigung aus dem Grundkörper entnehmbar.From the US 8 443 478 B1 a cleaning device is known which is motor-assisted and can be moved manually by a handle. The cleaning device has two counter-rotating rollers, the rotation speeds of which can be set independently of one another. The rollers are provided with brushes. The rollers are arranged adjacently, with a wall structure being arranged between the rollers. Dirt particles thrown up by a roller can bounce off the wall structure and be deflected. In addition, the rollers can be removed from the base body for cleaning.

Bei dem bereits bekannten Reinigungsgerät ist eine relativ komplex aufgebaute Wandstruktur zwischen den beborsteten Reinigungswalzen vorgesehen. Diese bewirkt, dass die von der jeweiligen Reinigungswalze aufgeschleuderten Schmutzpartikel unabhängig und ohne Wechselwirkung mit der anderen Walze in den Auffangbehälter gefördert werden.In the already known cleaning device, a relatively complex wall structure is provided between the cleaning rollers with bristles. This causes the flung from the respective cleaning roller Dirt particles are conveyed into the collecting container independently and without interaction with the other roller.

Da die Bürsten bzw. deren Borsten durch die Wandstruktur getrennt sind, wird ein Zusammenwirken der Bürsten zum Fördern der jeweilig erfassten und aufgeschleuderten Schmutzpartikel unterbunden.Since the brushes or their bristles are separated by the wall structure, an interaction of the brushes for conveying the respectively captured and thrown dirt particles is prevented.

Durch das fehlende Zusammenwirken der Bürsten in einem gemeinsamen Zwischenraum kann auch keine Pumpwirkung zur Beschleunigung der Luftströmung in Förderrichtung eines solchen gemeinsamen Zwischenraumes zwischen den Bürsten erzielt werden.Due to the lack of cooperation between the brushes in a common intermediate space, no pumping action to accelerate the air flow in the conveying direction of such a common intermediate space can be achieved between the brushes.

Zudem sind die Bürsten sogar so auf Abstand zueinander angeordnet, dass auch ein ausreichend starkes Saugvakuum oberhalb der Walzen nur mit größerem apparativen Aufwand erzeugbar ist. Auch die Ausbildung von Bürsten ist eher hinderlich für den Aufbau eines Saugvakuums.In addition, the brushes are even arranged at a distance from one another in such a way that a sufficiently strong suction vacuum above the rollers can only be generated with greater expenditure on equipment. The formation of brushes is also rather a hindrance to building up a suction vacuum.

Insoweit ist keine optimale Förderung der Schmutzpartikel und der sie umgebenden Luft möglich. Auch ein Saugvakuum ist nicht leicht zu erzeugen, welches maßgeblich die Förderrichtung der Schmutzpartikel beeinflusst, die Reinigungsleistung steigert und zugleich das Auffangen oder Sammeln von Schmutzpartikeln erleichtert. Weitere Reinigungsgeräte werden durch US 5 109 976 A , US 2006/191097 A1 , WO 2012/149572 A2 , EP 0 050 470 A1 und US 2002/092122 A1 offenbart.In this respect, optimal promotion of the dirt particles and the air surrounding them is not possible. A suction vacuum is also not easy to generate, which significantly influences the conveying direction of the dirt particles, increases the cleaning performance and at the same time makes it easier to catch or collect dirt particles. More cleaning equipment is through U.S. 5,109,976 A , US 2006/191097 A1 , WO 2012/149572 A2 , EP 0 050 470 A1 and US 2002/092122 A1 disclosed.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt daher die Aufgabe zugrunde, ein Reinigungsgerät anzugeben, mit welchem bei konstruktiv einfachem Aufbau eine optimale Förderung von Partikeln und der sie umgebenden Luft in einen Auffangbehälter erreicht wird und in dem ein diese Förderung eventuell unterstützendes starkes Saugvakuum problemlos erzeugbar ist.The invention is therefore based on the object of specifying a cleaning device with which, with a structurally simple structure, optimal conveyance of particles and the air surrounding them is achieved in a collecting container and in which a strong suction vacuum that may support this conveyance can be generated without any problems.

Die vorliegende Erfindung löst die zuvor genannte Aufgabe durch die Merkmale des Patentanspruchs 1.The present invention achieves the aforementioned object by the features of claim 1.

Ein Reinigungsgerät umfasst einen Grundkörper und eine Handhabe, mit welcher eine bedienende Person das Reinigungsgerät auf einer zu reinigenden Fläche verfahren kann, wobei im Grundkörper zwei gegenläufig rotierbare Walzen so aufgenommen sind, dass beide Walzen mit dem zu reinigenden Boden in Kontakt gelangen. Erfindungsgemäß sind die Walzen nicht durch eine Wandstruktur getrennt, so dass sie beidseitig an einen gemeinsamen Längsspalt einwirken. Insofern sind die Walzen derart angeordnet, dass diese einen gemeinsamen Luftspalt einschließen. Die Walzen sind unmittelbar zueinander benachbart.A cleaning device comprises a base body and a handle with which an operating person can move the cleaning device on a surface to be cleaned, two rollers rotatable in opposite directions being accommodated in the base body so that both rollers come into contact with the floor to be cleaned. According to the invention, the rollers are not separated by a wall structure, so that they act on a common longitudinal gap on both sides. In this respect, the rollers are arranged in such a way that they enclose a common air gap. The rollers are directly adjacent to one another.

Es ist nur ein relativ enger Längsspalt zwischen den Walzen vorgesehen, der erlaubt, dass die Walzen an beiden Seiten des Längsspalts mit aufgewirbelten und/ oder aufgesaugten Medien wie Luft oder Schmutzpartikeln in gleicher Richtung wechselwirken können. Diese Wirkung wird insbesondere durch die gegenläufig angetriebenen Walzen unterstützt.Only a relatively narrow longitudinal gap is provided between the rollers, which allows the rollers on both sides of the longitudinal gap to interact in the same direction with fluidized and / or sucked media such as air or dirt particles. This effect is supported in particular by the rollers driven in opposite directions.

Da beide Walzen in Kontakt mit dem zu reinigenden Boden gelangen kann verhindert werden, dass Schmutzpartikel durch Impulsübertragung unter dem Grundkörper hindurch geschleudert werden.Since both rollers come into contact with the floor to be cleaned, it is possible to prevent dirt particles from being thrown through the transmission of impulses under the base body.

Insoweit ist ein Reinigungsgerät angegeben, mit welchem bei konstruktiv einfachem Aufbau eine optimale Förderung von Partikeln und der sie umgebenden Luft in einen Auffangbehälter erreicht wird und in dem ein diese Förderung eventuell unterstützendes starkes Saugvakuum problemlos erzeugbar ist.To this extent, a cleaning device is specified with which, with a structurally simple structure, optimal conveyance of particles and the air surrounding them is achieved in a collecting container and in which a strong suction vacuum that may support this conveyance can be generated without any problems.

Die Handhabe ist vorzugsweise gelenkig an den Grundkörper angebunden. Dabei kann das Gelenk als Kreuzgelenk ausgebildet sein. Das Reinigungsgerät wird manuell angetrieben. Insofern können elektrische Antriebsmittel für die Rollen entfallen.The handle is preferably connected to the base body in an articulated manner. The joint can be designed as a universal joint. The cleaning device is driven manually. In this respect, electrical drive means for the rollers can be dispensed with.

Die Walzen sind vorzugsweise mittels eines Elektromotors angetrieben. Dazu sind in dem Grundkörper ein Elektromotor und ein Energiespeicher, vorzugsweise ein Akkumulator angeordnet. Die Kraftübertragung auf die Walzen erfolgt vorzugsweise über einen Zugmitteltrieb, beispielsweise über einen Zahnriemen.The rollers are preferably driven by means of an electric motor. For this purpose, an electric motor and an energy store, preferably an accumulator, are arranged in the base body. The power transmission to the rollers takes place preferably via a traction drive, for example via a toothed belt.

Wenn die Walzen gleich groß sind, schleudern sie Schmutzpartikel nach oben. Die Schmutzpartikel können in diesem Fall zumindest teilweise wieder direkt nach unten fallen und sich in unerwünschter Weise oberhalb des Längsspalts zwischen den Walzen ansammeln.If the rollers are the same size, they throw dirt particles upwards. In this case, the dirt particles can at least partially fall straight down again and collect in an undesirable manner above the longitudinal gap between the rollers.

Daher könnten die Walzen unterschiedliche Durchmesser aufweisen. Hierdurch können Schmutzpartikel in eine Vorzugsrichtung gelenkt werden, welche von der Orthogonalen zur zu reinigenden Fläche abweicht. Eine geneigte Vorzugsrichtung ermöglicht eine geringe Bauhöhe des Grundkörpers, da die Schmutzpartikel schräg in einen Auffangbehälter geführt werden können.Therefore, the rollers could have different diameters. This allows dirt particles to be directed in a preferred direction which deviates from the orthogonal to the surface to be cleaned. An inclined preferred direction enables the base body to have a low overall height, since the dirt particles can be guided into a collecting container at an angle.

Das Durchmesserverhältnis der Walzen kann zwischen 7:6 und 12:6, vorzugsweise 8:6 betragen. In einer vorteilhaften Ausgestaltung weist die größere Walze einen Durchmesser von 40 mm und die kleinere Walze einen Durchmesser von 30 mm auf. Vorzugsweise ist die Walze mit dem größeren Durchmesser der Vorderkante des Grundkörpers zugeordnet. Die Walze mit dem kleineren Durchmesser ist bei dieser Ausgestaltung von der Vorderkante des Grundkörpers betrachtet hinter der größeren Walze und näher zu dem Auffangbehälter angeordnet. Bei dieser Ausgestaltung werden die aufgenommenen Schmutzpartikel nach schräg hinten in den in dem Grundkörper angeordneten Auffangbehälter geleitet. Des Weiteren wurde festgestellt, dass die größere Walze an dem zu reinigenden Boden anhaftenden Schmutz besser anlöst als die kleinere Walze.The diameter ratio of the rollers can be between 7: 6 and 12: 6, preferably 8: 6. In an advantageous embodiment, the larger roller has a diameter of 40 mm and the smaller roller has a diameter of 30 mm. The roller with the larger diameter is preferably assigned to the front edge of the base body. In this embodiment, the roller with the smaller diameter is arranged behind the larger roller and closer to the collecting container, viewed from the front edge of the base body. In this configuration, the dirt particles picked up obliquely backwards into the collecting container arranged in the base body. It was also found that the larger roller loosens dirt adhering to the floor to be cleaned better than the smaller roller.

Darüber hinaus hat sich in Untersuchungen herausgestellt, dass kleinere, staubähnliche Verschmutzungen effektiver von Walzen mit kleinerem Durchmesser in den Auffangbehälter geschleudert werden, während größere, partikuläre Verschmutzungen effektiver von Walzen mit größerem Durchmesser in den Auffangbehälter geschleudert werden. Insofern ist es besonders vorteilhaft, wenn beide Walzen in Kontakt mit dem zu reinigenden Boden gelangen.In addition, studies have shown that smaller, dust-like dirt is thrown more effectively into the collecting container by rollers with a smaller diameter, while larger, particulate dirt is more effectively thrown into the collecting container by rollers with a larger diameter. In this respect, it is particularly advantageous if both rollers come into contact with the floor to be cleaned.

Die Breite eines Längsspalts zwischen den Walzen könnte im Bereich 0,5 mm bis 15 mm, bevorzugt im Bereich 1 mm bis 10 mm, liegen. Hierdurch werden eine hohe Förderleistung sowie ein hohes Saugvakuum im Bereich oberhalb des Längsspalts erzielt. So können Schmutzpartikel sehr gut gefördert und angesaugt werden.The width of a longitudinal gap between the rollers could be in the range 0.5 mm to 15 mm, preferably in the range 1 mm to 10 mm. This results in a high delivery rate and a high suction vacuum in the area above the longitudinal gap. In this way, dirt particles can be conveyed and sucked in very well.

Die Walzen sind zur weiteren Verbesserung der Fördereigenschaften profiliert und greifen in der jeweiligen Profilierung ineinander.The rollers are profiled to further improve the conveying properties and interlock in the respective profiling.

Vor diesem Hintergrund ist die Mantelfläche der Walzen mit einem Profil versehen.Against this background, the outer surface of the rollers is provided with a profile.

Hierdurch wird eine Vorzugsrichtung erzeugt, in welche Schmutzpartikel gezwungen werden. Das Profil könnte eine Pumpwirkung entfalten.This creates a preferred direction in which dirt particles are forced. The profile could develop a pumping effect.

Ein Profil könnte schaufelartig ausgestaltet sein. Winkel von Profilstrukturen, bevorzugt Winkel von Profillamellen, relativ zur Mantelfläche einer Walze nehmen entscheidend Einfluss auf die Förderwirkung. Eine Art Schaufel bewirkt eine besonders gute Förderwirkung.A profile could be designed like a shovel. Angle of profile structures, preferably angle of profile lamellas, relative to the outer surface of a roller have a decisive influence on the funding effect. A kind of shovel has a particularly good conveying effect.

Das Profil kann durch Lamellen gebildet sein. Die Lamellen verlaufen vorzugsweise in Längsrichtung der Walzen. Zur Verbesserung der Reinigungswirkung ist es vorteilhaft, wenn die Lamellen elastisch verformbar sind. Dazu können zumindest die Lamellen aus einem thermoplastischen Elastomer (TPE) ausgebildet sein.The profile can be formed by slats. The lamellae preferably run in the longitudinal direction of the rollers. To improve the cleaning effect, it is advantageous if the lamellae are elastically deformable. For this purpose, at least the lamellae can be made from a thermoplastic elastomer (TPE).

Die Reinigungswirkung verbessert sich nochmals, wenn die Lamellen V-förmig ausgebildet sind. Dabei ist die Spitze der V-förmigen Lamellen vorzugsweise in etwa mittig auf der Walze angeordnet. Dadurch werden Schmutzpartikel, welche im Außenbereich der Walzen aufgenommen werden, in Richtung der Mitte der Walzen umgelenkt, so dass diese sicher in den Auffangbehälter befördert werden können.The cleaning effect is further improved if the slats are V-shaped. The tip of the V-shaped lamellae is preferably arranged approximately in the middle of the roller. As a result, dirt particles that are picked up in the outer area of the rollers are deflected in the direction of the center of the rollers so that they can be safely transported into the collecting container.

Die Lamellen können im Bereich des geringsten Abstandes der Walzen lediglich durch einen in Längsrichtung verlaufenden Spalt voneinander beabstandet sein. Die Spaltweite beträgt in einer vorteilhaften Ausgestaltung 1 mm.In the region of the smallest distance between the rollers, the lamellae can only be separated from one another by a gap running in the longitudinal direction. In an advantageous embodiment, the gap width is 1 mm.

Zwischen den Lamellen und den einander zugewandten Oberflächen der Walzen kann sich eine Luftkammer ausbilden. In der Luftkammer werden zumindest größere Partikel eingeschlossen und in Richtung des Auffangbehälters gefördert.An air chamber can form between the lamellae and the surfaces of the rollers facing one another. At least larger particles are trapped in the air chamber and conveyed in the direction of the collecting container.

Die Mantelfläche zumindest einer Walze könnte zumindest teilweise nicht mit Borsten oder Borstenbündeln versehen sein. Borstenbündel können kein geschlossenes Volumen in einem Zwischenraum zwischen den beiden Walzen abschließen. Zwischen den Borsten der Borstenbündel bestehen stets Spalte, durch die eine Pumpwirkung reduziert wird. Bevorzugt weisen daher beide Walzen keine Borsten oder Borstenbündel auf.The outer surface of at least one roller could at least partially not be provided with bristles or bristle bundles. Bundles of bristles cannot close off a closed volume in a space between the two rollers. There are always gaps between the bristles of the bristle bundles, by which a pumping effect is reduced. Both rollers therefore preferably have no bristles or bristle bundles.

Die Breite des Längsspaltes bei profilierten Walzen ist wie folgt definiert: Es gibt bei profilierten Walzen ausgehend von deren Drehachsen zwei Profilradien, einen äußeren Profilradius, endend an der Spitze der Profilierung, und einen inneren Profilradius, endend am Fuß der Profilierung.The width of the longitudinal gap in profiled rollers is defined as follows: There are two profile radii for profiled rollers based on their axes of rotation, an outer profile radius ending at the top of the profile and an inner profile radius ending at the foot of the profile.

Wenn beispielsweise eine Profilhöhe von 10 mm vorliegt, würde eine Breite des Längsspalts von 1 mm bedeuten, dass bei einer Synchronisation Profilerhöhung-auf Lücke eine Distanz vom radial äußersten Punkt des Profils auf die Grundfläche der gegenüberliegenden Walze von 1 mm verbleibt. Die Profile der Walzen greifen dann ineinander, wodurch eine gute Förderwirkung oder Pumpwirkung entsteht.If, for example, a profile height of 10 mm is present, a width of the longitudinal gap of 1 mm would mean that in the case of a profile increase-to-gap synchronization, a distance of 1 mm remains from the radially outermost point of the profile to the base of the opposite roller. The profiles of the rollers then interlock, creating a good conveying effect or pumping effect.

Zumindest eine Walze könnte federnd gelagert sein. Hierdurch können die Walzen gegen die zu reinigende Fläche schlagen und dadurch Schmutzpartikel aus dieser herauslösen.At least one roller could be resiliently mounted. This allows the rollers to hit the surface to be cleaned and thereby remove dirt particles from it.

In einer weiteren vorteilhaften Ausgestaltung sind die Walzen zumindest abschnittsweise verformbar. Dazu können die Walzen zumindest abschnittsweise mit einem Kern aus Schaumstoff versehen sein. Durch die verformbare Ausgestaltung können sich die Walzen an den zu reinigenden Boden anpassen, so dass stets gewährleistet ist, dass beide Walzen zumindest im Bereich des Profils an dem zu reinigenden Boden anliegen. Dabei können die Walzen so in dem Grundkörper angeordnet sein, dass das Profil oder die Lamellen im Kontaktbereich mit dem zu reinigenden Boden verformt werden und dadurch mit Vorspannung an dem zu reinigenden Boden anliegen.In a further advantageous embodiment, the rollers can be deformed at least in sections. For this purpose, the rollers can be provided with a foam core at least in sections. Due to the deformable configuration, the rollers can adapt to the floor to be cleaned, so that it is always ensured that both rollers are in contact with the floor to be cleaned, at least in the area of the profile. The rollers can be arranged in the base body in such a way that the profile or the lamellae are deformed in the contact area with the floor to be cleaned and thus rest against the floor to be cleaned with pretension.

Die Walzen könnten mit solchen Drehzahlen rotierbar sein, dass die Geschwindigkeiten an deren radial jeweils äußersten Punkten gleich sind. Hierdurch werden Schmutzpartikel, die von einer Walze in Richtung der anderen Walze geschleudert werden, effektiv von der jeweils gegenüberliegenden Walze weiterbefördert. Zudem können eventuelle Profile synchron ineinandergreifen. Eine kleinere Walze dreht somit mit entsprechend höherer Drehzahl als eine größere gegenüberliegende Walze. Insofern weisen die Walzen bei dieser Ausgestaltung eine übereinstimmende Umfangsgeschwindigkeit auf.The rollers could be rotatable at such speeds that the speeds are the same at their radially outermost points. As a result, dirt particles that are thrown from one roller in the direction of the other roller are effectively transported on by the respective opposite roller. In addition, any profiles can interlock synchronously. A smaller roller therefore rotates at a correspondingly higher speed than a larger opposite roller. In this respect, the rollers in this embodiment have a corresponding peripheral speed.

Je nach Anwendungszweck kann es aber auch vorteilhaft sein, wenn die Walzen alternativ dieselbe Drehzahl aufweisen.Depending on the application, however, it can also be advantageous if the rollers alternatively have the same speed.

Die Walzen sind vorzugsweise wirkverbunden. Die Verbindung der Walzen kann dabei ebenfalls über einen Zugmitteltrieb oder alternativ über Zahnräder erfolgen. Je nach Einsatzzweck des Reinigungsgerätes kann die Übersetzung dann so gewählt sein, dass beide Walzen dieselbe Umfangsgeschwindigkeit oder alternativ dieselbe Drehzahl aufweisen.The rollers are preferably operatively connected. The rollers can also be connected via a traction drive or alternatively via gears. Depending on the intended use of the cleaning device, the translation can then be selected so that both rollers have the same peripheral speed or, alternatively, the same rotational speed.

Oberhalb der Walzen und/ oder des Längsspalts könnte eine bevorzugt abgewinkelte Pralloberfläche angeordnet sein. Hierdurch kann eine Lenkung der geschleuderten Schmutzpartikel erfolgen. Die Pralloberfläche ist oberhalb der Walzen im Gehäuse vorgesehen. Dies unterstützt die Führung der Schmutzpartikel in eine Vorzugsrichtung, wie sie durch verschieden große Walzen erzeugt wird. Die Förderwirkung des Saugvakuums wird ebenfalls durch die Pralloberfläche in vorteilhafter Weise unterstützt.A preferably angled impact surface could be arranged above the rollers and / or the longitudinal gap. This allows the thrown dirt particles to be steered. The impact surface is provided above the rollers in the housing. This supports the guiding of the dirt particles in a preferred direction, as is generated by rollers of different sizes. The conveying effect of the suction vacuum is also supported in an advantageous manner by the impact surface.

Vorzugsweise ist die Pralloberfläche gekrümmt ausgebildet. Dazu kann die Form der Pralloberfläche der Form der Walzen entsprechen. Durch die gekrümmte Ausgestaltung werden die Schmutzpartikel sicher in den Auffangbehälter geleitet. Durch die gekrümmte Formgebung wird vermieden, dass die Schmutzpartikel bei Kontakt mit der Pralloberfläche einen Impuls erhalten, durch den die Schmutzpartikel wieder aus dem Reinigungsgerät heraus geschleudert werden.The impact surface is preferably curved. For this purpose, the shape of the impact surface can correspond to the shape of the rollers. Due to the curved design, the dirt particles are safely in the Collecting container passed. The curved shape prevents the dirt particles from receiving an impulse when they come into contact with the impact surface, by means of which the dirt particles are thrown out of the cleaning device again.

In Bereich hinter den Walzen könnte eine Entlüftungseinrichtung vorgesehen sein. Sofern kein Saugvakuum wirkt oder wirken soll, kann es vorteilhaft sein, bevorzugt in einem Bereich hinter den Walzen für eine Entlüftung zu sorgen, da durch die Walzen eine Luftströmung in das Reinigungsgerät hinein erzeugt werden kann. Ein durch die Pumpwirkung der Walzen erzeugter unerwünschter Druckaufbau kann so ausgeglichen werden.A ventilation device could be provided in the area behind the rollers. If no suction vacuum acts or should act, it can be advantageous to provide ventilation, preferably in an area behind the rollers, since the rollers can generate an air flow into the cleaning device. An undesirable pressure build-up caused by the pumping action of the rollers can thus be compensated for.

Spalte zwischen den Walzen und einem umschließenden Gehäuse könnten bevorzugt an zumindest einer Stelle kleiner sein als der Längsspalt zwischen den Walzen. Anderenfalls kann das geförderte Medium leicht wieder in entgegengesetzte Richtung entweichen. Zudem erschweren größere Spalte zwischen dem Gehäuse und den Walzen den Aufbau eines Saugvakuums hinter den Walzen.Gaps between the rollers and an enclosing housing could preferably be smaller at at least one point than the longitudinal gap between the rollers. Otherwise the conveyed medium can easily escape in the opposite direction. In addition, larger gaps between the housing and the rollers make it difficult to build up a suction vacuum behind the rollers.

Alternativ oder ergänzend kann auch vorgesehen sein, dass die Spalte zwischen dem Gehäuse und den Walzen durch eine reibungsarme, die Walzen berührende Abdichtung zumindest teilweise geschlossen werden.Alternatively or in addition, it can also be provided that the gaps between the housing and the rollers are at least partially closed by a low-friction seal touching the rollers.

Diese Abdichtung kann in Form einer flexiblen Lippe ausgeführt sein oder durch weitere Walzen oder durch einen durchgehenden Borstenvorhang. Mit dieser Abdichtung werden auch eventuell an den Walzen anhaftende Partikel abgestreift.This seal can be implemented in the form of a flexible lip or by further rollers or by a continuous bristle curtain. With this seal, any particles adhering to the rollers are also stripped off.

Kurzbeschreibung der ZeichnungBrief description of the drawing

In den Zeichnungen zeigen:

Fig. 1
eine Seitenansicht eines Reinigungsgeräts,
Fig. 2
eine schematische Ansicht zweier gegenläufig rotierbarer Walzen mit unterschiedlichen Durchmessern und
Fig. 3
eine schematische Ansicht zweier gegenläufig rotierbarer Walzen mit unterschiedlichen Profilen. Die Profile der Walzen greifen ineinander, wobei ein Profil schaufelartig ausgestaltet ist.
In the drawings show:
Fig. 1
a side view of a cleaning device,
Fig. 2
a schematic view of two counter-rotating rollers with different diameters and
Fig. 3
a schematic view of two counter-rotating rollers with different profiles. The profiles of the rollers intermesh, one profile being designed like a shovel.

Ausführung der ErfindungImplementation of the invention

Fig. 1 zeigt ein Reinigungsgerät, welches einen Grundkörper 1 und eine Handhabe 2 umfasst, mit welcher eine bedienende Person das Reinigungsgerät auf einer zu reinigenden Fläche verfahren kann. Die Handhabe 2 ist gelenkig mit dem Grundkörper 1 verbunden. Im Grundkörper 1 sind zwei gegenläufig rotierbare Walzen 3a, 3b aufgenommen sind. Die Walzen 3a, 3b sind derart angeordnet, dass diese beidseitig auf einen engen gemeinsamen Längsspalt 6 einwirken. Die Walzen 3a, 3b werden über einen Elektromotor angetrieben, welcher zusammen mit einem Akkumulator in dem Grundkörper 1 angeordnet ist. Der Antrieb der Walzen 3a, 3b erfolgt derart, dass beide Walzen 3a, 3b dieselbe Umfangsgeschwindigkeit aufweisen. Fig. 1 shows a cleaning device which comprises a base body 1 and a handle 2 with which an operating person can move the cleaning device on a surface to be cleaned. The handle 2 is connected to the base body 1 in an articulated manner. Two counter-rotating rollers 3a, 3b are accommodated in the base body 1. The rollers 3a, 3b are arranged in such a way that they act on a narrow, common longitudinal gap 6 on both sides. The rollers 3a, 3b are driven by an electric motor which is arranged in the base body 1 together with an accumulator. The rollers 3a, 3b are driven in such a way that both rollers 3a, 3b have the same peripheral speed.

Die Walzen 3a, 3b sind derart angeordnet, dass diese nur durch einen gemeinsamen Luftspalt und/ oder einen Längsspalt 6 getrennt sind. Beide Walzen 3a, 3b gelangen mit dem zu reinigenden Boden in Kontakt.The rollers 3a, 3b are arranged in such a way that they are only separated by a common air gap and / or a longitudinal gap 6. Both rollers 3a, 3b come into contact with the floor to be cleaned.

Fig. 2 zeigt, dass die Walzen 3a, 3b unterschiedliche Durchmesser r1, r2 aufweisen. Die der Vorderkante des Grundkörpers 1 zugeordnete Walze 3b weist einen Durchmesser r2 von 40 mm und die dahinter angeordnete Walze 3a weist einen Durchmesser r1 von 30 mm auf. Hierdurch können Schmutzpartikel in eine Vorzugsrichtung 4 gelenkt werden, welche von der Orthogonalen zur zu reinigenden Fläche abweicht. Eine geneigte Vorzugsrichtung 4 ermöglicht eine geringe Bauhöhe des Grundkörpers 1, da die Schmutzpartikel schräg in einen Auffangbehälter 5 geführt werden können. Fig. 2 shows that the rollers 3a, 3b have different diameters r1, r2. The roller 3b assigned to the front edge of the base body 1 has a diameter r2 of 40 mm and the roller 3a arranged behind it has a diameter r1 of 30 mm. In this way, dirt particles can be directed in a preferred direction 4 which deviates from the orthogonal to the surface to be cleaned. An inclined preferred direction 4 enables the base body 1 to have a low overall height, since the dirt particles can be guided into a collecting container 5 at an angle.

Der Auffangbehälter 5 ist in dem Grundkörper 1 angeordnet und kann mittels eines Handgriffs zum Entleeren aus dem Grundkörper 1 entfernt werden.The collecting container 5 is arranged in the base body 1 and can be removed from the base body 1 for emptying by means of a handle.

Die Breite des Längsspalts 6 zwischen den Walzen 3a, 3b beträgt 1 mm. Hierdurch wird eine besonders gute Förderwirkung in Bezug auf das zu transportierende Medium, nämlich Schmutzpartikel und/oder Luft, bewirkt.The width of the longitudinal gap 6 between the rollers 3a, 3b is 1 mm. This brings about a particularly good conveying effect in relation to the medium to be transported, namely dirt particles and / or air.

In Kombination mit einer Saugeinheit 7 wird zudem durch eine geeignete Enge des Längsspaltes 6 ein hoher Unterdruck oberhalb des Längsspaltes 6 erzielt, was zu einer schnellen Luftströmung durch den Längsspalt 6 und damit zu einer guten Aufnahme von Staub und Schmutzpartikeln vom Boden führt.In combination with a suction unit 7, a high negative pressure above the longitudinal gap 6 is also achieved through a suitable narrowing of the longitudinal gap 6, which leads to a rapid air flow through the longitudinal gap 6 and thus to a good pick-up of dust and dirt particles from the floor.

Oberhalb der Walzen 3a, 3b und des Längsspalts 6 ist eine Pralloberfläche 8 angeordnet. Die Pralloberfläche 8 ist gekrümmt und folgt der Kontur der Walzen 3a, 3b. Die Pralloberfläche 8 bildet einen Teil des Grundkörpers 1, nämlich einen Teil des Gehäusedeckels.A bounce surface 8 is arranged above the rollers 3a, 3b and the longitudinal gap 6. The impact surface 8 is curved and follows the contour of the rollers 3a, 3b. The impact surface 8 forms part of the base body 1, namely part of the housing cover.

Fig. 3 zeigt, dass die Mantelfläche zumindest einer Walze 3a mit einem Profil 9 versehen ist. Hierdurch wird eine besonders gute Förderwirkung in Drehrichtung der Walzen 3a, 3b erzeugt. Das Profil 9 könnte eine Pumpwirkung entfalten. Konkret ist das Profil 9 schaufelartig ausgebildet. Dazu sind die Walzen 3a, 3b mit Lamellen versehen, welche elastisch verformbar sind. Des Weiteren weisen die Walzen 3a, 3b abschnittsweise einen Kern aus verformbarem Schaumstoff auf. Dadurch sind die Walzen 3a, 3b verformbar und passen sich dem zu reinigenden Boden an. Die Lamellen beider Walzen 3a, 3b gelangen stets mit dem zu reinigenden Boden in Kontakt, wobei die Lamellen mit Vorspannung an dem zu reinigenden Boden anliegen und sich abschnittsweise verformen. Die Lamellen verlaufen in Längsrichtung der Walzen und sind V-förmig ausgebildet. Fig. 3 shows that the jacket surface of at least one roller 3 a is provided with a profile 9. This produces a particularly good conveying effect in the direction of rotation of the rollers 3a, 3b. The profile 9 could develop a pumping effect. Specifically, the profile 9 is designed like a shovel. For this purpose, the rollers 3a, 3b are provided with lamellae, which are elastically deformable. Furthermore, the rollers 3a, 3b in sections have a core made of deformable foam. As a result, the rollers 3a, 3b are deformable and adapt to the floor to be cleaned. The lamellae of both rollers 3a, 3b always come into contact with the floor to be cleaned, the lamellae resting against the floor to be cleaned with pretensioning and deforming in sections. The lamellae run in the longitudinal direction of the rollers and are V-shaped.

Die Mantelflächen beider Walzen 3a, 3b sind vollständig nicht mit Borsten oder Borstenbündeln versehen. Deren Profilstrukturen, nämlich Profillamellen 9a, 9b greifen ineinander. Zwischen zwei Profillamellen 9a, 9b kann eine Luftkammer 9c entstehen.The outer surfaces of the two rollers 3a, 3b are completely not provided with bristles or bristle bundles. Their profile structures, namely profile lamellas 9a, 9b, interlock. An air chamber 9c can arise between two profile lamellas 9a, 9b.

Die Profillamellen 9a sind gewinkelt angeordnet und ragen sekantenartig von der Mantelfläche der Walze 3a ab. Die Profillamellen 9b sind nicht gewinkelt angeordnet und ragen von der Drehachse der Walze 3b ausgehend sternförmig nach radial außen ohne Neigung ab. Es bestehen zwei Profilradien Pr1, Pr2.The profile lamellae 9a are arranged at an angle and protrude like a secant from the outer surface of the roller 3a. The profile lamellae 9b are not arranged at an angle and, starting from the axis of rotation of the roller 3b, protrude radially outward in a star shape without inclination. There are two profile radii Pr1, Pr2.

Zumindest eine Walze 3a, 3b könnte federnd gelagert sein. Hierdurch können die Walzen 3a, 3b gegen die zu reinigende Fläche schlagen und dadurch Schmutzpartikel aus dieser herauslösen.At least one roller 3a, 3b could be resiliently mounted. As a result, the rollers 3a, 3b can hit the surface to be cleaned and thereby remove dirt particles from it.

Die Walzen 3a, 3b sind mit solchen Drehzahlen rotierbar, dass die Geschwindigkeiten an deren radial jeweils äußersten Punkten gleich sind.The rollers 3a, 3b can be rotated at such speeds that the speeds are the same at their radially outermost points.

Claims (13)

  1. Cleaning device, comprising a base body (1) and a handle (2) by means of which an operator can move the cleaning device on a surface to be cleaned, wherein two rollers (3a, 3b) which can be rotated in opposite directions are accommodated in the base body (1) such that the rollers (3a, 3b) come into contact with the floor to be cleaned, wherein the rollers (3a, 3b) are arranged in the base body (1) in such a way that they are separated only by a common air gap and/or a longitudinal gap (6), characterized in that the lateral surfaces of the rollers (3a, 3b) are provided with a profile (9), and in that the profiles (9) of the rollers (3a, 3b) mutually engage in one another.
  2. Cleaning device according to Claim 1, characterized in that the rollers (3a, 3b) have different diameters (r1, r2).
  3. Cleaning device according to Claim 2, characterized in that the ratio of the diameters of the rollers (3a, 3b) is between 7:6 and 12:6, preferably 8:6.
  4. Cleaning device according to one of Claims 1 to 3, characterized in that the width of a longitudinal gap (6) between the rollers (3a, 3b) lies in the range of 0.5 mm to 15 mm, preferably in the range of 1 mm to 10 mm.
  5. Cleaning device according to one of Claims 1 to 4, characterized in that the profile (9) is formed by fins.
  6. Cleaning device according to Claim 5, characterized in that the fins are of V-shaped form.
  7. Cleaning device according to Claim 5 or 6, characterized in that in the region of the smallest spacing between the rollers (3a, 3b), the fins are spaced apart from one another merely by a gap.
  8. Cleaning device according to one of Claims 5 to 7, characterized in that an air chamber forms between the fins and the mutually facing surfaces of the rollers (3a, 3b) .
  9. Cleaning device according to one of Claims 1 to 8, characterized in that at least one roller (3a, 3b) is mounted in a resilient manner.
  10. Cleaning device according to one of Claims 1 to 9, characterized in that the rollers (3a, 3b) can be deformed.
  11. Cleaning device according to one of Claims 1 to 10, characterized in that the rollers (3a, 3b) can be rotated at such rotational speeds that the speeds of their respective radially outermost points are the same.
  12. Cleaning device according to one of Claims 1 to 11, characterized in that an impingement surface (8) is arranged above the rollers (3a, 3b) and/or the longitudinal gap (6).
  13. Cleaning device according to one of Claims 1 to 12, characterized in that a ventilation device is provided downstream of the rollers (3a, 3b).
EP16719364.8A 2015-04-24 2016-04-21 Manually-displaceable cleaning device having counter-rotatable rollers Active EP3285631B1 (en)

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CA2983382C (en) 2021-03-09
EP3285631A1 (en) 2018-02-28
CA2983382A1 (en) 2016-10-27
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CN107529929A (en) 2018-01-02

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