WO2023222912A1 - Vacuum cleaner head, in particular for cleaning floors - Google Patents
Vacuum cleaner head, in particular for cleaning floors Download PDFInfo
- Publication number
- WO2023222912A1 WO2023222912A1 PCT/EP2023/063532 EP2023063532W WO2023222912A1 WO 2023222912 A1 WO2023222912 A1 WO 2023222912A1 EP 2023063532 W EP2023063532 W EP 2023063532W WO 2023222912 A1 WO2023222912 A1 WO 2023222912A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum cleaner
- cleaner head
- head according
- ball
- housing
- 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.)
- Ceased
Links
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
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0405—Driving means for the brushes or agitators
- A47L9/0411—Driving means for the brushes or agitators driven by electric motor
-
- 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
- A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles
-
- 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
- A47L9/04—Nozzles with driven brushes or agitators
- A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
- A47L9/0466—Rotating tools
- A47L9/0477—Rolls
Definitions
- Vacuum cleaner head especially for floor cleaning
- the invention relates to a vacuum cleaner head for use in cleaning a surface, in particular a floor surface, which has a housing and two rotating cleaning rollers, between which a suction space is formed.
- a vacuum cleaner head for a vacuum cleaner which has a main body, a front cleaning roller and a rear cleaning roller as well as means for rotating the cleaning rollers.
- rollers that are rotatably mounted relative to a housing of the vacuum cleaner head, which support the housing relative to the floor to be cleaned and which allow the vacuum cleaner head to move back and forth on the floor to be cleaned, with the rollers rolling on the floor to be cleaned.
- the rollers are mounted on shafts that are arranged in a stationary manner relative to the housing.
- a vacuum cleaner head of the type mentioned is known, for example, from the international patent application WO 2021/064420 Al.
- This vacuum cleaner head has a front cleaning roller and a rear cleaning roller as well as means for rotating the cleaning rollers.
- This vacuum cleaner head also has several casters to support the vacuum cleaner head.
- Each roller is rotatably mounted about a horizontal axis relative to a roller holder, which enables the roller to roll on the floor to be cleaned.
- each roller holder is rotatable through 360 degrees about a vertical axis in such a way that a caster is realized, whereby the rollers automatically align themselves relative to the floor in accordance with the direction of movement of the vacuum cleaner head when guiding the vacuum cleaner head over the floor to be cleaned.
- the rollers are arranged in a suction chamber between the cleaning rollers.
- a vacuum cleaner head which is characterized by at least one ball which is rotatably mounted relative to the housing in all directions of rotation about its ball center and which is designed and arranged to roll on the surface to be cleaned during a cleaning process.
- vacuum cleaner heads such as the vacuum cleaner head known from European patent application EP 2 521 475 A1
- the rollers automatically slip sideways during the cleaning process when the vacuum cleaner head is rotated about a vertical axis , which makes the turning process more difficult and which can damage, especially scratch, the surface to be cleaned.
- moving the vacuum cleaner head sideways is largely impossible because the rollers cannot roll perpendicular to the forward-backward direction. A forceful lateral movement can result in damage to the surface to be cleaned, particularly grinding marks and scratches.
- rollers which automatically align themselves in the direction of travel when the vacuum cleaner head is guided over the floor to be cleaned (as, for example, the vacuum cleaner head known from WO 2021/064420 Al has). becomes. If you look closely, it is the case that when the direction of movement changes by 180 degrees, for example when the direction of movement changes from forward to backward, each roller rotates in place at the reversal point about a vertical axis running through the wheel contact point. In this case, one part of the roller rubs forward and the other part backwards over the surface to be cleaned, which can damage, in particular scratch, the surface to be cleaned.
- the user initially feels a significantly increased resistance, which is due to the fact that the torque has to be applied to realign the caster holders (rotate the caster holders by 180 degrees).
- the same adverse effects also occur to a somewhat reduced extent when the direction of movement of the vacuum cleaner head changes by less than 180 degrees and when changing from a straight-line movement of the vacuum cleaner head to a rotation of the vacuum cleaner head about a vertical axis.
- the vacuum cleaner head according to the invention has the very special advantage that there is resistance when changing the direction of movement and scratching the surface to be cleaned is avoided because the ball always rolls on the surface to be cleaned, regardless of the direction of movement and regardless of a change in the direction of movement.
- the ball is preferably mounted relative to the housing in such a way that the center of the ball remains stationary relative to the housing regardless of the direction of rotation.
- the ball can be mounted relative to the housing in such a way that there are an infinite number of axes of rotation that run through the center of the ball and around which the ball can be rotated.
- the ball is rotatably mounted by means of a, in particular annular, rolling bearing.
- a, in particular annular, rolling bearing Such a design has the very special advantage that low rolling resistance is achieved and the vacuum cleaner head can therefore be moved particularly smoothly over the surface to be cleaned.
- the rolling bearing can advantageously be arranged such that the ball is in direct contact with the rolling elements of the rolling bearing.
- the rolling elements of the rolling bearing are preferably smaller than the ball.
- a design in which the ball is in direct contact with the rolling elements of the rolling bearing along a small circle of the ball is particularly advantageous.
- a small circle refers to those circles on a spherical surface whose planes do not contain the center of the sphere.
- the preferably circular rolling bearing can advantageously be arranged above the ball, so that the housing can be supported on the ball via the rolling bearing. Since the ball in such a design partially protrudes into the space surrounded by the rolling bearing, a horizontal fixation of the ball relative to the rolling bearing is achieved.
- the rolling bearing can be placed on the ball in a similar way to a royal crown on a head.
- the rolling bearing can in particular be designed as a ball bearing or as an angular needle bearing or as a tapered roller bearing. Other rolling bearing designs are also possible.
- the ball can advantageously have a diameter in the range from 5 mm to 20 mm, in particular in the range from 6 mm to 10 mm, in particular in the range from 8 mm to 9 mm.
- This size is particularly advantageous, on the one hand, to enable easy rolling on all household surfaces, such as hard floors (especially tiles, laminate, parquet), carpets or PVC floors, and, on the other hand, to ensure a small size and low weight to reach the vacuum cleaner head.
- this size makes it possible to arrange the ball outside the suction space between the cleaning rollers without having to enlarge the vacuum cleaner head to such an extent Cleaning corners and edges becomes difficult or even impossible.
- the ball can in particular be made from a plastic, in particular from a thermoplastic material, or a thermoset material or an elastomer material.
- the ball can in particular be made from a polyamide in order to achieve high strength, rigidity and toughness as well as good chemical resistance of the ball.
- the ball is made of another material, for example a metal or a metal alloy.
- the ball preferably has a homogeneous spherical surface, in particular without depressions and without projections.
- the ball preferably has no bore.
- the ball in particular does not have an inserted or inserted shaft.
- the ball preferably has no shaft attached to the ball surface.
- the ball is rotatably mounted in a cartridge.
- a cartridge together with the ball rotatably mounted therein, can be manufactured and assembled as an independent structural unit, which facilitates the manufacture of the vacuum cleaner head according to the invention and contributes to reducing manufacturing costs.
- a single ball is rotatably mounted in the cartridge.
- the cartridge can have a cartridge housing with a, preferably circular, opening through which part of the ball projects outwards.
- the opening and the outwardly projecting part of the ball are aligned in such a way that the part which projects straight outwards lies against the surface to be cleaned.
- the diameter of the opening is smaller than the diameter of the ball. This has the very special advantage that the ball cannot fall out through the opening and that no additional components are required to prevent the ball from falling out through the opening.
- the diameter of the opening can advantageously be 0.9 to 0.98 times the diameter of the ball. With such a diameter of the opening it is ensured, on the one hand, that the outwardly projecting part of the ball is sufficiently large to allow it to roll when the vacuum cleaner head is used on a carpet, for example.
- such a diameter of the opening makes it possible particularly well (especially in the case of a cartridge made of a plastic material) to insert the ball into the cartridge through the opening in a snap-locking manner, without damaging the cartridge and without the risk of the ball accidentally falling out (after after insertion) consists of the cartridge.
- the cartridge is closed apart from the opening.
- the ball and its storage are particularly well protected, especially against contamination and/or damage.
- the cartridge has another opening.
- the cartridge can advantageously have a circular tube-shaped wall with a view to a space-saving design.
- the cartridge can advantageously be made from a plastic, in particular as a one-piece or multi-part plastic injection molded part.
- the rolling bearing can be arranged in the cartridge for rotatable storage.
- the cartridge housing is part of the rolling bearing and/or that the cartridge housing forms a ball cage for the rolling elements of the rolling bearing.
- Such a design is particularly compact and requires very few components.
- the cartridge including the ball rotatably mounted in it, can advantageously be manufactured and assembled as an independent structural unit.
- the housing can have a receptacle into which the cartridge can be inserted when assembling the vacuum cleaner head.
- the cartridge is inserted into the holder in a form-fitting manner.
- it can advantageously be provided that the cartridge is inserted into the receptacle in a friction-locking and/or rusting manner.
- the cartridge can be removed from the receptacle non-destructively and/or without tools.
- This has the very special advantage that the cartridge can easily be exchanged (also by the user) for another cartridge if a ball made of a different material and/or of a different size is more advantageous for a different surface to be cleaned; or if the cartridge, bullet and/or its storage is damaged.
- the vacuum cleaner head according to the invention preferably has several, in particular exactly four, balls which are rotatably mounted relative to the housing in all directions of rotation about their ball center, which are designed and arranged to roll on the surface to be cleaned during a cleaning process.
- Such a design is particularly advantageous because it prevents the vacuum cleaner head from tipping unintentionally when cleaning a surface.
- the balls can advantageously be designed the same way.
- the vacuum cleaner head can advantageously have at least one of the features described above in relation to each of the balls and/or their storage.
- the balls are arranged outside the suction space.
- Such a design has the advantage that less of the dirty sucked-in air comes into contact with the ball and its storage, so that contamination, in particular of the storage of the balls, is prevented.
- all balls are arranged outside the area between a first vertical plane, which contains the cleaning roller rotation axis of a first of the two cleaning rollers, and a second vertical plane, which contains the cleaning roller rotation axis of the second of the two cleaning rollers.
- a design is particularly resistant to tipping over when the vacuum cleaner head is moved over a floor that needs to be cleaned.
- it can be provided, particularly with a view to good tipping safety, that all balls are arranged outside the area between those side vertical planes in which the front ends of the (preferably the same, in particular the same length) cleaning rollers are located.
- the balls are preferably arranged at the corners of an (imaginary) square, in particular a rectangle.
- Good tipping resistance of the vacuum cleaner head is particularly advantageous because if the vacuum cleaner head tilts (even if only temporarily), one of the cleaning rollers can be pressed too much against the surface to be cleaned, which can lead to this
- the rotation speed of the cleaning roller may be reduced due to its excessive friction relative to the surface to be cleaned, or the rotation of the cleaning roller may be stopped completely.
- even short-term excessive pressure on the cleaning roller can lead to damage to the surface to be cleaned, in particular to grinding marks and scratches.
- the housing has two mutually parallel housing sections, each of which adjoins one end of each cleaning roller.
- each of the two housing sections is supported by at least two of the rotatably mounted balls during operation of the vacuum cleaner head.
- the end faces of the cleaning rollers are particularly well protected, while still ensuring that the vacuum cleaner head is very resistant to tipping over; This is particularly true if the two balls are each arranged in opposite end regions of the two mutually parallel housing sections.
- the vacuum cleaner head according to the invention can advantageously have two elongated air guide devices in the suction chamber, which direct the sucked in air to a suction opening.
- the sucked-in air flows through the suction opening from the suction chamber into the suction pipe of the suction device, to which the vacuum cleaner head is connected.
- the air guide devices serve to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber.
- the air guiding devices can advantageously be arranged with their longitudinal extension direction parallel to the cleaning roller rotation axes of the two cleaning rollers. Alternatively or additionally, each of the air guiding devices can advantageously directly adjoin one of the two housing sections. This has the very particular advantage that there is no free space between the air guide devices and the housing sections in which turbulence and/or areas with reduced negative pressure can form.
- the air guiding devices are preferably designed and arranged in such a way that when the vacuum cleaner head is in operation, a gap remains between them and the surface being cleaned. In the event that there is nevertheless contact with the surface to be cleaned, the air guiding devices can have a material-friendly coating, in particular made of a soft material, for example a velvet layer or a fleece layer.
- Each of the air guiding devices can advantageously be conical and preferably tapered in the direction of the suction opening. This is particularly advantageous in order to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber.
- the air guiding devices can advantageously be designed and arranged in a mirror-symmetrical manner in the suction chamber. This is also particularly advantageous in order to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber.
- the suction opening already mentioned can advantageously be arranged between the air guiding devices, in particular between two front ends of the air guiding devices, when viewed in the vertical direction.
- the suction opening can advantageously be formed longitudinally and transversely in the center of an upper wall of the suction chamber.
- the vacuum cleaner head preferably has a motor, in particular an electric motor, which drives the cleaning rollers to rotate.
- the vacuum cleaner head can have an energy storage device, for example a battery, which provides energy to operate the electric motor.
- the electric motor receives energy from the suction device to which the vacuum cleaner head is coupled.
- the cleaning roller rotation axes are preferably arranged horizontally and/or parallel to one another.
- the cleaning rollers rotate in opposite directions.
- the cleaning rollers rotate in opposite directions in such a way that the outside of the cleaning rollers, which is aligned with the surface to be cleaned, moves (with the air flow) towards the suction chamber.
- the scraper bar can be aligned secantally or tangentially to the cleaning roller on which it rests, viewed in the axial direction.
- the squeegee is aligned, starting from a holding section of the squeegee towards the squeegee edge, against the direction of movement of the surface of the cleaning roller.
- the scraper strip can advantageously be curved, in particular transversely to its longitudinal direction.
- the squeegee extends directly from one of the two housing sections directly to the other of the housing sections. This ensures that the cleaning roller, on which the scraper bar rests, is kept clean over its entire length.
- connection element for, in particular locking, connection of the vacuum cleaner head to a suction pipe of a suction device is present on the top of the housing.
- the connection element can advantageously also have at least one electrical interface for transmitting electrical energy or for transmitting electrical control signals for controlling or regulating the electric motor (for example for controlling or regulating the rotation speed and/or the direction of rotation of the cleaning rollers).
- connection element is connected to the housing by means of an angularly movable coupling.
- the angularly movable coupling can, for example, have a cardan joint or two hinge joints connected in series. Such a design allows the vacuum cleaner head to be guided particularly precisely and flexibly during a cleaning process.
- the cleaning rollers can have, for example, bristles and/or a fleece and/or a pile and/or at least one cleaning lip on their outside.
- a set that has a vacuum cleaner head according to the invention and replacement rollers is particularly advantageous.
- the replacement rollers can be designed in the same way as the cleaning rollers. However, it is also advantageously possible for the replacement rollers to differ from the cleaning rollers in at least one property and, for example, to be designed for use on different types of surfaces.
- a vacuum cleaner, particularly for floor cleaning, which has a vacuum cleaner head according to the invention is particularly advantageous.
- the vacuum cleaner can have a suction device to which the vacuum cleaner head according to the invention (preferably non-destructive and/or releasable without tools) is connected or can be connected.
- FIG. 2 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a perspective view from below before inserting the cartridges containing the balls,
- FIG. 3 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a top view from below
- Fig. 4 shows the embodiment of a vacuum cleaner head according to the invention in one
- Fig. 5 shows the embodiment of a vacuum cleaner head according to the invention in one
- Fig. 6 shows the embodiment of a vacuum cleaner head according to the invention in one
- FIG. 7 shows a cartridge with a ball mounted therein in a top view
- FIG. 8 shows the cartridge with a ball mounted therein in a sectional view along the section line BB shown in FIG. 7,
- FIG. 9 shows a representation of the exemplary embodiment of a vacuum cleaner head according to the invention, which essentially corresponds to FIG. 1 with additions to explain the arrangement of the balls,
- FIG. 10 is a representation of the exemplary embodiment of a vacuum cleaner head according to the invention, which essentially corresponds to FIG. 3 with additions to explain the arrangement of the balls.
- Fig. 1 shows an embodiment of a vacuum cleaner head according to the invention in a perspective view from below.
- the vacuum cleaner head has a housing 1 and two cleaning rollers 2 that are driven to rotate.
- a suction space 3 is formed between the cleaning rollers 2.
- the housing 1 has two mutually parallel housing sections 4, each of which adjoins one end of each cleaning roller 2.
- the housing sections 4 delimit the suction chamber 3 laterally.
- the housing sections 4 are connected to one another via an intermediate housing section 5 of the housing 1 arranged above the cleaning rollers.
- An electric motor can advantageously be arranged in the intermediate housing section 5, which drives the cleaning rollers 2 to rotate.
- the bearings (not shown) for rotatably supporting the cleaning rollers 2 are arranged in the housing sections 4.
- Torque transmission elements (not shown) (for example parts of a belt drive) can be arranged in the housing sections 4 and serve to transmit torque from the electric motor to the cleaning rollers 2.
- the vacuum cleaner head has four balls 6 which are mounted so that they can rotate relative to the housing 1 in all directions of rotation about their ball center, which are designed and arranged to roll on the surface to be cleaned during a cleaning process.
- Each of the two housing sections 4 is supported by two of the rotatably mounted balls 6, the two balls 6 each being arranged in horizontally opposite end regions of the two mutually parallel housing sections.
- a felt strip 21 is glued to the two housing sections 4 between the rotatably mounted balls 6 in order to seal the suction chamber 3 laterally.
- the vacuum cleaner head has two elongated air guide devices 7 in the suction chamber 3, which direct the sucked in air to a suction opening 8.
- the sucked-in air flows through the suction opening 8 from the suction chamber 3 into the suction pipe (not shown) of a suction device (not shown) to which the vacuum cleaner head is connected.
- the air guide devices 7 serve to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber 3.
- the air guiding devices 7 are arranged with their longitudinal extension parallel to the cleaning roller rotation axes 9 of the two cleaning rollers. Each of the air guiding devices 7 borders directly on one of the two housing sections 4.
- Each of the air guide devices 7 is conical and tapers towards the suction opening 8.
- the air guiding devices are designed and arranged in mirror symmetry in the suction chamber 3.
- the suction opening 8 can be arranged between the air guiding devices 7, namely between two front ends of the air guiding devices 7.
- the air guiding devices 7 are designed and arranged in such a way that during operation of the The vacuum cleaner head leaves a gap between them and the surface being cleaned.
- Fig. 2 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a perspective view from below before inserting the cartridges 10 containing the balls 6.
- the balls 6 are rotatably mounted in the cartridges 10, which is shown in detail in particular in Figure 8.
- the cartridge 10 together with the rotatably mounted ball therein are manufactured as an independent structural unit and are assembled as such.
- the housing 1 has receptacles 11 into which the cartridges 10 are inserted.
- Fig. 3 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a top view from below.
- scraper strips 12 There are two scraper strips 12, the scraper edges of which each rest on one of the cleaning rollers 2.
- the scraper strips 12 serve to wipe off dirt adhering to the cleaning rollers 2.
- Fig. 4 shows the embodiment of a vacuum cleaner head according to the invention in a side view. It can be seen that part of the ball protrudes downwards over the housing section 4.
- Fig. 5 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a sectional view along the section line AA shown in Figure 3. It can be seen that the two balls 6 are each arranged in opposite end regions of the housing section 4.
- Fig. 6 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a sectional view along the section line DD shown in Figure 3.
- the two scraper strips 12 can be seen in particular, the scraper edges 13 of which each rest against one of the cleaning rollers 2.
- Fig. 7 shows a cartridge 10 with a circular tube-shaped wall 14 and with the ball 6 mounted therein in a top view
- Fig. 8 shows the cartridge with a ball mounted therein in a sectional view along the section line BB shown in Figure 7.
- Rolling elements 15, namely rolling balls, are arranged in the cartridge 10 and belong to a rolling bearing for rotatably supporting the ball 6.
- the ball 6 stands along one Small circle 16 of the ball 6 with the rolling elements 15 in direct contact.
- the cartridge 10 has a cartridge housing 19, to which the wall 14 belongs, with a circular opening 20 through which part of the ball 6 projects outwards.
- the diameter 17 of the opening 20 is smaller than the diameter 18 of the ball 6. This has the very special advantage that the ball 6 cannot fall outwards through the opening 20 and that no additional components are required to prevent the ball from falling out 6 through the opening 20 to prevent.
- the diameter 17 of the opening 20 can advantageously be 0.9 to 0.98 times the diameter 18 of the ball 6.
- Figures 9 and 10 essentially correspond to Figures 1 and 3, with an additional first vertical plane 22, which contains the cleaning roller rotation axis 9 of a first of the two cleaning rollers 2, and a second vertical plane 23 which contains the cleaning roller rotation axis of the second of the two cleaning rollers 2 includes as well as side vertical planes in which the front ends of the cleaning rollers 2 are located, shown 24.
- the balls 6 are arranged outside the area between the first vertical plane 22 and a second vertical plane 23. In addition, the balls 6 are arranged outside the area between the side vertical planes.
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Abstract
Description
Staubsauqerkopf, insbesondere zur Bodenreiniqunq Vacuum cleaner head, especially for floor cleaning
Die Erfindung betrifft einen Staubsaugerkopf zur Verwendung bei der Reinigung einer Oberfläche, insbesondere einer Fußbodenoberfläche, der ein Gehäuse sowie zwei zur Rotation angetriebene Reinigungswalzen aufweist, zwischen denen ein Saugraum ausgebildet ist. The invention relates to a vacuum cleaner head for use in cleaning a surface, in particular a floor surface, which has a housing and two rotating cleaning rollers, between which a suction space is formed.
Aus der europäischen Patentanmeldung EP 2 521 475 Al ist ein Staubsaugerkopf für ein Staubsauggerät bekannt, das einen Hauptkörper, eine vordere Reinigungswalze und eine hintere Reinigungswalze sowie Mittel zum Drehen der Reinigungswalzen aufweist. Es sind relativ zu einem Gehäuse des Staubsaugerkopfs rotierbar gelagerte Laufrollen vorhanden, die das Gehäuse gegenüber dem zu reinigenden Boden abstützen und die es erlauben, den Staubsaugerkopf auf dem zu reinigenden Boden vor und zurück zu bewegen, wobei die Rollen auf dem zu reinigenden Boden abrollen. Die Laufrollen sind auf Wellen gelagert, die relativ zu dem Gehäuse ortsfest angeordnet sind. From the European patent application EP 2 521 475 A1 a vacuum cleaner head for a vacuum cleaner is known which has a main body, a front cleaning roller and a rear cleaning roller as well as means for rotating the cleaning rollers. There are rollers that are rotatably mounted relative to a housing of the vacuum cleaner head, which support the housing relative to the floor to be cleaned and which allow the vacuum cleaner head to move back and forth on the floor to be cleaned, with the rollers rolling on the floor to be cleaned. The rollers are mounted on shafts that are arranged in a stationary manner relative to the housing.
Ein Staubsaugerkopf der eingangs genannten Art ist beispielsweise aus der internationalen Patentanmeldung WO 2021 /064420 Al bekannt. Dieser Staubsaugerkopf weist eine vordere Reinigungswalze und eine hintere Reinigungswalze sowie Mittel zum Drehen der Reinigungswalzen auf. Außerdem weist dieser Staubsaugerkopf mehrere Laufrollen zum Tragen des Staubsaugerkopfs auf. Jede Laufrolle ist relativ zu einem Laufrollenhalter um eine horizontale Achse drehbar gelagert, was ein Abrollen der Laufrolle auf dem zu reinigenden Boden ermöglicht. Außerdem ist jeder Laufrollenhalter um 360 Grad um eine vertikale Achse derart drehbar gelagert, so dass ein Nachlauf realisiert ist, wodurch sich die Laufrollen beim Führen des Staubsaugerkopfs über den zu reinigenden Fußboden jeweils selbsttätig entsprechend der Bewegungsrichtung des Staubsaugerkopfs relativ zum Boden ausrichten. Die Laufrollen sind in einer Saugkammer zwischen den Reinigungswalzen angeordnet. A vacuum cleaner head of the type mentioned is known, for example, from the international patent application WO 2021/064420 Al. This vacuum cleaner head has a front cleaning roller and a rear cleaning roller as well as means for rotating the cleaning rollers. This vacuum cleaner head also has several casters to support the vacuum cleaner head. Each roller is rotatably mounted about a horizontal axis relative to a roller holder, which enables the roller to roll on the floor to be cleaned. In addition, each roller holder is rotatable through 360 degrees about a vertical axis in such a way that a caster is realized, whereby the rollers automatically align themselves relative to the floor in accordance with the direction of movement of the vacuum cleaner head when guiding the vacuum cleaner head over the floor to be cleaned. The rollers are arranged in a suction chamber between the cleaning rollers.
Es ist die Aufgabe der vorliegenden Erfindung, einen Staubsaugerkopf anzugeben, der besonders einfach und oberflächenschonend über die zu reinigende Oberfläche lenkbar ist. It is the object of the present invention to provide a vacuum cleaner head that can be steered particularly easily and in a way that is gentle on the surface over the surface to be cleaned.
Die Aufgabe wird durch einen Staubsaugerkopf gelöst, der gekennzeichnet ist durch wenigstens eine relativ zu dem Gehäuse in alle Rotationsrichtungen um ihren Kugelmittelpunkt rotierbar gelagerte Kugel, die dazu ausgebildet und angeordnet ist, bei einem Reinigungsvorgang auf der zu reinigenden Oberfläche abzurollen. The object is achieved by a vacuum cleaner head, which is characterized by at least one ball which is rotatably mounted relative to the housing in all directions of rotation about its ball center and which is designed and arranged to roll on the surface to be cleaned during a cleaning process.
In erfindungsgemäßer Weise wurde erkannt, dass ein zuverlässiges Abstützen des Gehäuses und damit der zur Rotation angetriebenen Reinigungswalzen relativ zu der zu reinigenden Oberfläche wichtig ist, um zu verhindern, dass die Reinigungswalzen übermäßig gegen die zu reinigende Oberfläche gedrückt werden. Ein übermäßiges Andrücken der Reinigungswalzen kann dazu führen, dass sich die Rotationsgeschwindigkeit der Reinigungswalzen auf Grund ihrer übermäßen Reibung relativ zu der zu reinigende Oberfläche verringert oder dass die Rotation der Reinigungswalzen sogar vollständig angehalten wird. Außerdem kann ein übermäßiges Andrücken der Reinigungswalzen zu einer Beschädigung der zu reinigenden Oberfläche, insbesondere zu Schleifspuren und Kratzern, führen. In accordance with the invention, it was recognized that reliable support of the housing and thus the cleaning rollers driven to rotate relative to the surface to be cleaned is important in order to prevent the cleaning rollers from excessively moving against the surface cleaning surface. Excessive pressure on the cleaning rollers can result in the rotation speed of the cleaning rollers being reduced due to their excessive friction relative to the surface to be cleaned or in the rotation of the cleaning rollers even being stopped completely. In addition, excessive pressure on the cleaning rollers can lead to damage to the surface to be cleaned, especially grinding marks and scratches.
Bei Staubsaugerköpfen, wie beispielsweise bei dem aus der europäischen Patentanmeldung EP 2 521 475 Al bekannten Staubsaugerkopf, die relativ zu dem Gehäuse ortsfest angeordnete Laufrollen aufweisen, kommt es während des Reinigungsvorganges bei einem Drehen des Staubsaugerkopfs um eine vertikale Achse automatisch zu einem seitlichen Rutschen der Laufrollen, was den Drehvorgang erschwert und wodurch die zu reinigende Oberfläche beschädigt, insbesondere zerkratzt, werden kann. Außerdem ist ein seitliches Bewegen des Staubsaugerkopfs weitgehend unmöglich, da die Laufrollen senkrecht zur Vorwärts-Rückwärts- Richtung nicht abrollen können. Bei einer gewaltsam herbeigeführten seitlichen Bewegung kann es zu einer Beschädigung der zu reinigenden Oberfläche, insbesondere zu Schleifspuren und Kratzern, kommen. In the case of vacuum cleaner heads, such as the vacuum cleaner head known from European patent application EP 2 521 475 A1, which have rollers arranged in a stationary manner relative to the housing, the rollers automatically slip sideways during the cleaning process when the vacuum cleaner head is rotated about a vertical axis , which makes the turning process more difficult and which can damage, especially scratch, the surface to be cleaned. In addition, moving the vacuum cleaner head sideways is largely impossible because the rollers cannot roll perpendicular to the forward-backward direction. A forceful lateral movement can result in damage to the surface to be cleaned, particularly grinding marks and scratches.
In erfindungsgemäßer Weise wurde erkannt, dass dieses Problem durch die Verwendung von Laufrollen, die sich beim Führen des Staubsaugerkopfs über den zu reinigenden Fußboden jeweils selbsttätig in Fahrtrichtung ausrichten (wie sie beispielsweise der aus WO 2021 /064420 Al bekannte Staubsaugerkopf aufweist), nur unzureichend gelöst wird. Bei genauer Betrachtung ist es nämlich so, dass sich jede Laufrolle bei einer Änderung der Bewegungsrichtung um 180 Grad, beispielsweise bei einer Änderung der Bewegungsrichtung von vorwärts nach rückwärts, in dem Umkehrpunkt um eine durch den Radaufstandspunkt verlaufende vertikale Achse auf der Stelle dreht. Hierbei reibt ein Teil der Laufrolle vorwärts und der andere Teil rückwärts über die zu reinigende Oberfläche, wodurch die zu reinigende Oberfläche beschädigt, insbesondere zerkratzt, werden kann. Außerdem verspürt der Benutzer im Moment der Änderung der Bewegungsrichtung um 180 Grad zunächst einen deutlich erhöhten Widerstand, was darauf zurückzuführen ist, dass das Drehmoment zum Neuausrichten der Laufrollenhalter (Drehung der Laufrollenhalter um 180 Grad) aufgebracht werden muss. Dieselben nachteiligen Effekte treten in etwas verringertem Maße auch bei einem Wechsel der Bewegungsrichtung des Staubsaugerkopfs um weniger als 180 Grad und bei einem Übergang von einer geradlinigen Bewegung des Staubsaugerkopfs zu einer Drehung des Staubsaugerkopfs um eine vertikale Achse auf. In accordance with the invention, it was recognized that this problem was only inadequately solved by the use of rollers, which automatically align themselves in the direction of travel when the vacuum cleaner head is guided over the floor to be cleaned (as, for example, the vacuum cleaner head known from WO 2021/064420 Al has). becomes. If you look closely, it is the case that when the direction of movement changes by 180 degrees, for example when the direction of movement changes from forward to backward, each roller rotates in place at the reversal point about a vertical axis running through the wheel contact point. In this case, one part of the roller rubs forward and the other part backwards over the surface to be cleaned, which can damage, in particular scratch, the surface to be cleaned. In addition, at the moment of changing the direction of movement by 180 degrees, the user initially feels a significantly increased resistance, which is due to the fact that the torque has to be applied to realign the caster holders (rotate the caster holders by 180 degrees). The same adverse effects also occur to a somewhat reduced extent when the direction of movement of the vacuum cleaner head changes by less than 180 degrees and when changing from a straight-line movement of the vacuum cleaner head to a rotation of the vacuum cleaner head about a vertical axis.
Der erfindungsgemäße Staubsaugerkopf hat den ganz besonderen Vorteil, dass ein Widerstand beim Wechsel der Bewegungsrichtung und ein Zerkratzen der zu reinigenden Oberfläche vermieden ist, weil die Kugel unabhängig von der Bewegungsrichtung und unabhängig von einer Änderung der Bewegungsrichtung stets auf der zu reinigenden Oberfläche abrollt. The vacuum cleaner head according to the invention has the very special advantage that there is resistance when changing the direction of movement and scratching the surface to be cleaned is avoided because the ball always rolls on the surface to be cleaned, regardless of the direction of movement and regardless of a change in the direction of movement.
Die Kugel ist vorzugsweise derart relativ zu dem Gehäuse gelagert, dass der Kugelmittelpunkt unabhängig von der Rotationsrichtung relativ zu dem Gehäuse ortsfest bleibt. Insbesondere kann die Kugel derart relativ zu dem Gehäuse derart gelagert sein, dass es unendlich viele Rotationsachsen gibt, die durch den Kugelmittelpunkt verlaufen und um die die Kugel rotierbar ist. The ball is preferably mounted relative to the housing in such a way that the center of the ball remains stationary relative to the housing regardless of the direction of rotation. In particular, the ball can be mounted relative to the housing in such a way that there are an infinite number of axes of rotation that run through the center of the ball and around which the ball can be rotated.
Bei einer ganz besonderen Ausführung ist die Kugel mittels eines, insbesondere ringförmigen, Wälzlagers rotierbar gelagert. Eine solche Ausführung hat den ganz besonderen Vorteil, dass ein niedriger Rollwiderstand erreicht wird und der Staubsaugerkopf daher ganz besonders leichtgängig über die zu reinigende Oberfläche bewegt werden kann. Das Wälzlager kann vorteilhaft derart angeordnet sein, dass die Kugel mit den Wälzkörpern des Wälzlagers in unmittelbarem Kontakt steht. Die Wälzkörper des Wälzlagers sind vorzugsweise kleiner als die Kugel. In a very special embodiment, the ball is rotatably mounted by means of a, in particular annular, rolling bearing. Such a design has the very special advantage that low rolling resistance is achieved and the vacuum cleaner head can therefore be moved particularly smoothly over the surface to be cleaned. The rolling bearing can advantageously be arranged such that the ball is in direct contact with the rolling elements of the rolling bearing. The rolling elements of the rolling bearing are preferably smaller than the ball.
Ganz besonders Vorteilhaft ist eine Ausführung, bei der die Kugel entlang eines Kleinkreises der Kugel mit den Wälzkörpern des Wälzlagers in unmittelbarem Kontakt steht. Unter Kleinkreis versteht man diejenigen Kreise auf einer Kugeloberfläche, deren Ebenen nicht den Kugelmittelpunkt enthalten. Insbesondere kann das, vorzugsweise kreisrunde, Wälzlager vorteilhaft oberhalb der Kugel angeordnet sein, so dass sich das Gehäuse über das Wälzlager auf der Kugel abstützen kann, Da die Kugel bei einer solchen Ausführung teilweise in den von dem Wälzlager umgebenen Raum ragt, wird automatisch auch eine horizontale Fixierung der Kugel relativ zu dem Wälzlager erreicht. Beispielsweise kann das Wälzlager auf die Kugel ähnlich wie eine Königskrone auf einen Kopf aufgesetzt sein. A design in which the ball is in direct contact with the rolling elements of the rolling bearing along a small circle of the ball is particularly advantageous. A small circle refers to those circles on a spherical surface whose planes do not contain the center of the sphere. In particular, the preferably circular rolling bearing can advantageously be arranged above the ball, so that the housing can be supported on the ball via the rolling bearing. Since the ball in such a design partially protrudes into the space surrounded by the rolling bearing, a horizontal fixation of the ball relative to the rolling bearing is achieved. For example, the rolling bearing can be placed on the ball in a similar way to a royal crown on a head.
Das Wälzlager kann insbesondere als Kugellager oder als Schrägnadellager oder als Kegelrollenlager ausgebildet sein. Auch andere Wälzlagerbauformen sind möglich. The rolling bearing can in particular be designed as a ball bearing or as an angular needle bearing or as a tapered roller bearing. Other rolling bearing designs are also possible.
Die Kugel kann vorteilhaft einen Durchmesser im Bereich von 5 mm bis 20 mm, insbesondere im Bereich von 6 mm bis 10 mm, insbesondere im Bereich von 8 mm bis 9 mm aufweisen. Diese Größe ist besonders vorteilhaft, um einerseits ein leichtes Abrollen auf allen im Haushalt vorkommenden Oberflächen, wie Hartböden (insbesondere Fliesen, Laminat, Parkett), Teppichböden oder PVC-Böden, zu ermöglichen, und um andererseits gleichzeitig eine kleine Baugröße und ein niedriges Gewicht des Staubsaugerkopfs zu erreichen. Darüber hinaus ermöglicht es diese Größe, die Kugel außerhalb des Saugraumes zwischen den Reinigungswalzen anzuordnen, ohne den Staubsaugerkopf derart vergrößern zu müssen, dass ein Reinigen von Ecken und Kanten erschwert oder gar unmöglich wird. The ball can advantageously have a diameter in the range from 5 mm to 20 mm, in particular in the range from 6 mm to 10 mm, in particular in the range from 8 mm to 9 mm. This size is particularly advantageous, on the one hand, to enable easy rolling on all household surfaces, such as hard floors (especially tiles, laminate, parquet), carpets or PVC floors, and, on the other hand, to ensure a small size and low weight to reach the vacuum cleaner head. In addition, this size makes it possible to arrange the ball outside the suction space between the cleaning rollers without having to enlarge the vacuum cleaner head to such an extent Cleaning corners and edges becomes difficult or even impossible.
Die Kugel kann insbesondere aus einem Kunststoff, insbesondere aus einem thermoplastischen Werkstoff, oder einem duroplastischen Werkstoff oder einem Elastomerwerkstoff, hergestellt sein. Die Kugel kann insbesondere aus einem Polyamide hergestellt sein, um eine hohe Festigkeit, Steifigkeit und Zähigkeit sowie eine gute Chemikalienbeständigkeit der Kugel zu erreichen. Insbesondere kann vorteilhaft vorgesehen sein, dass die Kugel eine geringere Härte aufweist, als übliche Hartböden. Dies ist mit einer Kugel, die aus Kunststoff hergestellt ist, besonders einfach erreichbar. Hierdurch wird vorteilhaft erreicht, dass Dellen durch das Aufsetzen des Staubsaugerkopfs auf die zu reinigende Oberfläche vermieden sind. Allerdings ist es nicht ausgeschlossen, dass die Kugel aus einem anderen Material, beispielsweise aus einem Metall oder einer Metalllegierung, hergestellt ist. The ball can in particular be made from a plastic, in particular from a thermoplastic material, or a thermoset material or an elastomer material. The ball can in particular be made from a polyamide in order to achieve high strength, rigidity and toughness as well as good chemical resistance of the ball. In particular, it can advantageously be provided that the ball has a lower hardness than usual hard floors. This is particularly easy to achieve with a ball made of plastic. This advantageously ensures that dents are avoided by placing the vacuum cleaner head on the surface to be cleaned. However, it is not excluded that the ball is made of another material, for example a metal or a metal alloy.
Die Kugel weist vorzugsweise eine homogene Kugeloberfläche, insbesondere ohne Vertiefungen und ohne Vorsprünge auf. Vorzugsweise weist die Kugel insbesondere keine Bohrung auf. Vorzugsweise weist die Kugel insbesondere keine eingesteckte oder durchgesteckte Welle auf. Vorzugsweise weist die Kugel insbesondere keine an der Kugeloberfläche angebrachte Welle auf. The ball preferably has a homogeneous spherical surface, in particular without depressions and without projections. In particular, the ball preferably has no bore. Preferably, the ball in particular does not have an inserted or inserted shaft. In particular, the ball preferably has no shaft attached to the ball surface.
Bei einer ganz besonders vorteilhaften Ausführung ist die Kugel in einer Kartusche rotierbar gelagert. Eine solche Ausführung hat den ganz besonderen Vorteil, dass die Kartusche samt der darin rotierbar gelagerten Kugel als eigenständige Baueinheit hergestellt und montiert werden kann, was die Herstellung des erfindungsgemäßen Staubsaugerkopfs erleichtert und zur Reduzierung der Herstellkosten beiträgt. Vorzugsweise ist in der Kartusche nur eine einzige Kugel rotierbar gelagert. Es ist jedoch auch möglich, eine Kartusche vorzusehen, in der mehrere, beispielsweis genau zwei, (vorzugsweise gleiche) Kugeln um ihren Kugelmittelpunkt rotierbar gelagert sind, wobei die Kugeln dazu ausgebildet sind, bei einem Reinigungsvorgang auf der zu reinigenden Oberfläche abzurollen. In a particularly advantageous embodiment, the ball is rotatably mounted in a cartridge. Such a design has the very particular advantage that the cartridge, together with the ball rotatably mounted therein, can be manufactured and assembled as an independent structural unit, which facilitates the manufacture of the vacuum cleaner head according to the invention and contributes to reducing manufacturing costs. Preferably only a single ball is rotatably mounted in the cartridge. However, it is also possible to provide a cartridge in which several, for example exactly two, (preferably the same) balls are rotatably mounted about their ball center, the balls being designed to roll on the surface to be cleaned during a cleaning process.
Insbesondere kann die Kartusche ein Kartuschengehäuse mit einer, vorzugsweise kreisrunden, Öffnung aufweisen, durch die ein Teil der Kugel nach außen ragt. Vorzugsweise sind die Öffnung und der nach außen ragende Teil der Kugel derart ausgerichtet, dass der jeweils gerade nach außen ragende Teil an der zu reinigenden Oberfläche anliegt. In particular, the cartridge can have a cartridge housing with a, preferably circular, opening through which part of the ball projects outwards. Preferably, the opening and the outwardly projecting part of the ball are aligned in such a way that the part which projects straight outwards lies against the surface to be cleaned.
Bei einer vorteilhaften Ausführung ist der Durchmesser der Öffnung kleiner, als der Durchmesser der Kugel. Dies hat den ganz besonderen Vorteil, dass die Kugel nicht durch die Öffnung nach außen fallen kann und dass keine zusätzlichen Bauteile erforderlich sind, um das Herausfallen der Kugel durch die Öffnung zu verhindern. Der Durchmesser der Öffnung kann vorteilhaft das 0,9 bis 0,98-Fache des Durchmessers der Kugel betragen. Bei einem solchen Durchmesser der Öffnung ist einerseits gewährleistet, dass der nach außen ragende Teil der Kugel ausreichend groß ist, um beispielsweise bei einer Verwendung des Staubsaugerkopfs auf einem Teppichboden noch ein Abrollen zu ermöglichen. Andererseits ermöglicht es ein solcher Durchmesser der öffnung es besonders gut (insbesondere bei einer Kartusche aus einem Kunststoffmaterial), die Kugel rastend durch die Öffnung in die Kartusche einzufügen, ohne dass die Kartusche beschädigt wird und ohne dass die Gefahr des versehentlichen Herausfallens der Kugel (nach dem Einfügen) aus der Kartusche besteht. In an advantageous embodiment, the diameter of the opening is smaller than the diameter of the ball. This has the very special advantage that the ball cannot fall out through the opening and that no additional components are required to prevent the ball from falling out through the opening. The diameter of the opening can advantageously be 0.9 to 0.98 times the diameter of the ball. With such a diameter of the opening it is ensured, on the one hand, that the outwardly projecting part of the ball is sufficiently large to allow it to roll when the vacuum cleaner head is used on a carpet, for example. On the other hand, such a diameter of the opening makes it possible particularly well (especially in the case of a cartridge made of a plastic material) to insert the ball into the cartridge through the opening in a snap-locking manner, without damaging the cartridge and without the risk of the ball accidentally falling out (after after insertion) consists of the cartridge.
Bei einer besonderen Ausführung ist die Kartusche abgesehen von der Öffnung geschlossen. Hierdurch sind die Kugel und deren Lagerung besonders gut geschützt, insbesondere gegen Verschmutzung und/oder Beschädigung, untergebracht. Es ist jedoch nicht ausgeschlossen, dass die Kartusche eine weitere Öffnung aufweist. In a special version, the cartridge is closed apart from the opening. As a result, the ball and its storage are particularly well protected, especially against contamination and/or damage. However, it cannot be ruled out that the cartridge has another opening.
Im Hinblick darauf, dass die Kugel im Querschnitt ohnehin kreisrund ausgebildet ist und dass außerdem ein eventuell zu ihrer Rotationslagerung vorhandenes Wälzlager vorzugsweise kreisrund ausgebildet ist, kann die Kartusche im Hinblick auf eine bauraumsparende Bauweise vorteilhaft eine kreisrohrförmig ausgebildete Wandung aufweisen. In view of the fact that the ball is already circular in cross-section and that any rolling bearing that may be present for its rotational bearing is preferably circular, the cartridge can advantageously have a circular tube-shaped wall with a view to a space-saving design.
Die Kartusche kann vorteilhaft aus einem Kunststoff, insbesondere als einstückiges oder mehrteiliges Kunststoffspritzgussteil, gefertigt sein. The cartridge can advantageously be made from a plastic, in particular as a one-piece or multi-part plastic injection molded part.
Wie bereits erwähnt, kann das Wälzlager zur rotierbaren Lagerung in der Kartusche angeordnet sein. Alternativ kann vorteilhaft vorgesehen sein, dass das Kartuschengehäuse Teil des Wälzlager ist und/oder dass das Kartuschengehäuse einen Kugelkäfig für die Wälzkörper des Wälzlagers bildet. Eine solche Ausführung ist besonders kompakt und kommt mit besonders wenigen Bauteilen aus. As already mentioned, the rolling bearing can be arranged in the cartridge for rotatable storage. Alternatively, it can advantageously be provided that the cartridge housing is part of the rolling bearing and/or that the cartridge housing forms a ball cage for the rolling elements of the rolling bearing. Such a design is particularly compact and requires very few components.
Wie bereits erwähnt, kann die Kartusche samt der darin rotierbar gelagerten Kugel vorteilhaft als eigenständige Baueinheit hergestellt und montiert werden. Hierfür kann das Gehäuse eine Aufnahme aufweisen, in die die Kartusche beim Zusammenbau des Staubsaugerkopfs eingefügt werden kann. Bei einer besonders robusten Ausführung ist die Kartusche formschlüssig in die Aufnahme eingefügt. Alternativ oder zusätzlich kann vorteilhaft vorgesehen sein, dass die Kartusche reibschlüssig und/oder verrostend in die Aufnahme eingefügt ist. As already mentioned, the cartridge, including the ball rotatably mounted in it, can advantageously be manufactured and assembled as an independent structural unit. For this purpose, the housing can have a receptacle into which the cartridge can be inserted when assembling the vacuum cleaner head. In a particularly robust version, the cartridge is inserted into the holder in a form-fitting manner. Alternatively or additionally, it can advantageously be provided that the cartridge is inserted into the receptacle in a friction-locking and/or rusting manner.
Bei einer besonders vorteilhaften Ausführung kann die Kartusche der Aufnahme zerstörungsfrei und/oder werkzeugfrei wieder entnommen werden. Dies hat den ganz besonderen Vorteil, dass die Kartusche (auch vom Benutzer) einfach gegen eine andere Kartusche ausgetauscht werden kann, wenn für eine andersartige zu reinigende Oberfläche eine Kugel aus einem anderen Material und/oder mit einer anderen Größe vorteilhafter ist; oder wenn die Kartusche, die Kugel und/oder ihre Lagerung beschädigt ist. In a particularly advantageous embodiment, the cartridge can be removed from the receptacle non-destructively and/or without tools. This has the very special advantage that the cartridge can easily be exchanged (also by the user) for another cartridge if a ball made of a different material and/or of a different size is more advantageous for a different surface to be cleaned; or if the cartridge, bullet and/or its storage is damaged.
Vorzugsweise weist der erfindungsgemäße Staubsaugerkopf mehrere, insbesondere genau vier, relativ zu dem Gehäuse in alle Rotationsrichtungen um ihren Kugelmittelpunkt rotierbar gelagerte Kugeln auf, die dazu ausgebildet und angeordnet sind, bei einem Reinigungsvorgang auf der zu reinigenden Oberfläche abzurollen. Eine solche Ausführung ist besonders vorteilhaft, weil ein ungewolltes Kippen des Staubsaugerkopfs beim Reinigen einer Oberfläche vermieden wird. Die Kugeln können vorteilhaft gleich ausgebildet sein. Der Staubsaugerkopf kann vorteilhaft in Bezug jede der Kugeln und/oder deren Lagerung wenigstens eines der oben beschriebenen Merkmale aufweisen. The vacuum cleaner head according to the invention preferably has several, in particular exactly four, balls which are rotatably mounted relative to the housing in all directions of rotation about their ball center, which are designed and arranged to roll on the surface to be cleaned during a cleaning process. Such a design is particularly advantageous because it prevents the vacuum cleaner head from tipping unintentionally when cleaning a surface. The balls can advantageously be designed the same way. The vacuum cleaner head can advantageously have at least one of the features described above in relation to each of the balls and/or their storage.
Bei einer vorteilhaften Ausführung sind die Kugeln, vorzugsweise alle Kugeln, außerhalb des Saugraums angeordnet. Eine solche Ausführung hat den Vorteil, dass weniger von der schmutzigen angesaugten Luft mit der Kugel und deren Lagerung in Kontakt kommt, so dass eine Verschmutzung insbesondere der Lagerung der Kugeln verhindert ist. Insbesondere kann vorteilhaft vorgesehen sein, dass keine der Kugeln zwischen den beiden Reinigungswalzen angeordnet ist. In an advantageous embodiment, the balls, preferably all balls, are arranged outside the suction space. Such a design has the advantage that less of the dirty sucked-in air comes into contact with the ball and its storage, so that contamination, in particular of the storage of the balls, is prevented. In particular, it can advantageously be provided that none of the balls is arranged between the two cleaning rollers.
Bei einer ganz besonders vorteilhaften Ausführung sind alle Kugeln außerhalb des Bereichs zwischen einer ersten Vertikalebene, die die Reinigungswalzen-Rotationsachse einer ersten der beiden Reinigungswalzen beinhaltet, und einer zweiten Vertikalebene, die die Reinigungswalzen-Rotationsachse der zweiten der beiden Reinigungswalzen beinhaltet, angeordnet. Eine solche Ausführung ist ganz besonders kippsicher, wenn der Staubsaugerkopf über einen zu reinigenden Fußboden geführt wird. Alternativ oder zusätzlich kann insbesondere im Hinblick auf eine gute Kippsicherheit vorgesehen sein, dass alle Kugeln außerhalb des Bereichs zwischen denjenigen Seiten-Vertikalebenen angeordnet sind, in denen sich die stirnseitigen Enden der (vorzugsweise gleichen, insbesondere gleich langen) Reinigungswalzen befinden. In a particularly advantageous embodiment, all balls are arranged outside the area between a first vertical plane, which contains the cleaning roller rotation axis of a first of the two cleaning rollers, and a second vertical plane, which contains the cleaning roller rotation axis of the second of the two cleaning rollers. Such a design is particularly resistant to tipping over when the vacuum cleaner head is moved over a floor that needs to be cleaned. Alternatively or additionally, it can be provided, particularly with a view to good tipping safety, that all balls are arranged outside the area between those side vertical planes in which the front ends of the (preferably the same, in particular the same length) cleaning rollers are located.
Vorzugsweise sind die Kugeln an den Ecken eines (gedachten) Vierecks, insbesondere Rechtecks, angeordnet. The balls are preferably arranged at the corners of an (imaginary) square, in particular a rectangle.
Eine gute Kippsicherheit des Staubsaugerkopfs ist besonders vorteilhaft, weil bei einem (sei es nur vorübergehenden) Kippen des Staubsaugerkopfs dazu kommen kann, dass eine der Reinigungswalzen zu sehr gegen die zu reinigende Oberfläche gedrückt wird, was dazu führen kann, dass sich die Rotationsgeschwindigkeit der Reinigungswalze auf Grund ihrer übermäßen Reibung relativ zu der zu reinigende Oberfläche verringert oder dass die Rotation der Reinigungswalze ganz angehalten wird. Außerdem kann auch ein nur kurzzeitiges übermäßiges Andrücken der Reinigungswalze zu einer Beschädigung der zu reinigenden Oberfläche, insbesondere zu Schleifspuren und Kratzern, führen. Good tipping resistance of the vacuum cleaner head is particularly advantageous because if the vacuum cleaner head tilts (even if only temporarily), one of the cleaning rollers can be pressed too much against the surface to be cleaned, which can lead to this The rotation speed of the cleaning roller may be reduced due to its excessive friction relative to the surface to be cleaned, or the rotation of the cleaning roller may be stopped completely. In addition, even short-term excessive pressure on the cleaning roller can lead to damage to the surface to be cleaned, in particular to grinding marks and scratches.
Bei einer ganz besonderen Ausführung weist das Gehäuse zwei zueinander parallele Gehäuseabschnitte auf, von denen jeder an ein Ende jeder Reinigungswalze angrenzt. Insbesondere kann vorteilhaft vorgesehen sein, dass im Betrieb des Staubsaugerkopfs jeder der beiden Gehäuseabschnitte von wenigstens zwei der rotierbar gelagerten Kugeln getragen wird. Bei einer solchen Ausführung sind die Stirnseiten der Reinigungswalzen besonders gut geschützt, während dennoch eine sehr gute Kippsicherheit des Staubsaugerkopfs erreicht wird; dies insbesondere, wenn die beiden Kugeln jeweils in entgegengesetzten Endbereichen der zwei zueinander parallelen Gehäuseabschnitte angeordnet sind. In a very special embodiment, the housing has two mutually parallel housing sections, each of which adjoins one end of each cleaning roller. In particular, it can advantageously be provided that each of the two housing sections is supported by at least two of the rotatably mounted balls during operation of the vacuum cleaner head. With such a design, the end faces of the cleaning rollers are particularly well protected, while still ensuring that the vacuum cleaner head is very resistant to tipping over; This is particularly true if the two balls are each arranged in opposite end regions of the two mutually parallel housing sections.
Der erfindungsgemäße Staubsaugerkopf kann in dem Saugraum vorteilhaft zwei längliche Luftleitvorrichtungen aufweisen, die die eingesaugte Luft zu einer Säugöffnung leiten. Durch die Säugöffnung strömt die eingesaugte Luft aus dem Saugraum in das Saugrohr des Sauggerätes, an das der Staubsaugerkopf angeschlossen ist. Die Luftleitvorrichtungen dienen dazu, eine laminare Strömung zu erreichen und Verwirbelungen sowie Bereiche mit vermindertem Unterdrück in dem Saugraum zu vermeiden. Die Luftleitvorrichtungen können mit ihrer Längserstreckungsrichtung vorteilhaft parallel zu den Reinigungswalzen-Rotationsachsen der beiden Reinigungswalzen angeordnet sein. Alternativ oder zusätzlich kann vorteilhaft jede der Luftleitvorrichtungen unmittelbar an einen der beiden Gehäuseabschnitte angrenzen. Dies hat den ganz besonderen Vorteil, dass zwischen den Luftleitvorrichtungen und den Gehäuseabschnitten kein Freiraum verbleibt, in dem sich Verwirbelungen und/oder Bereiche mit vermindertem Unterdrück ausbilden können. The vacuum cleaner head according to the invention can advantageously have two elongated air guide devices in the suction chamber, which direct the sucked in air to a suction opening. The sucked-in air flows through the suction opening from the suction chamber into the suction pipe of the suction device, to which the vacuum cleaner head is connected. The air guide devices serve to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber. The air guiding devices can advantageously be arranged with their longitudinal extension direction parallel to the cleaning roller rotation axes of the two cleaning rollers. Alternatively or additionally, each of the air guiding devices can advantageously directly adjoin one of the two housing sections. This has the very particular advantage that there is no free space between the air guide devices and the housing sections in which turbulence and/or areas with reduced negative pressure can form.
Die Luftleitvorrichtungen sind vorzugsweise derart ausgebildet und angeordnet, dass im Betreib des Staubsaugerkopfs ein Spalt zwischen ihnen und zu der reinigenden Oberfläche verbleibt. Für den Fall, dass es dennoch zu einer Berührung mit der zu reinigenden Oberfläche kommt, können die Luftleitvorrichtungen eine materialschonende Beschichtung, insbesondere aus einem weichen Material, beispielsweise eine Samtschicht oder eine Vliesschicht, aufweisen. The air guiding devices are preferably designed and arranged in such a way that when the vacuum cleaner head is in operation, a gap remains between them and the surface being cleaned. In the event that there is nevertheless contact with the surface to be cleaned, the air guiding devices can have a material-friendly coating, in particular made of a soft material, for example a velvet layer or a fleece layer.
Jede der Luftleitvorrichtungen kann vorteilhaft konisch und sich vorzugsweise in Richtung auf die Säugöffnung verjüngend ausgebildet sein. Dies ist besonders vorteilhaft, um eine laminare Strömung zu erreichen und Verwirbelungen sowie Bereiche mit vermindertem Unterdrück in dem Saugraum zu vermeiden. Die Luftleitvorrichtungen können in dem Saugraum vorteilhaft spiegelsymmetrisch ausgebildet und angeordnet sein. Auch dies ist besonders vorteilhaft, um eine laminare Strömung zu erreichen und Verwirbelungen sowie Bereiche mit vermindertem Unterdrück in dem Saugraum zu vermeiden. Each of the air guiding devices can advantageously be conical and preferably tapered in the direction of the suction opening. This is particularly advantageous in order to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber. The air guiding devices can advantageously be designed and arranged in a mirror-symmetrical manner in the suction chamber. This is also particularly advantageous in order to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber.
Die bereits erwähnte Säugöffnung kann vorteilhaft in Vertikalrichtung betrachtet zwischen den Luftleitvorrichtungen, insbesondere zwischen zwei stirnseitigen Enden der Luftleitvorrichtungen, angeordnet sein. Alternativ oder zusätzlich kann die Säugöffnung vorteilhaft längs- und quermittig in einer oberen Wandung des Saugraumes ausgebildet sein. The suction opening already mentioned can advantageously be arranged between the air guiding devices, in particular between two front ends of the air guiding devices, when viewed in the vertical direction. Alternatively or additionally, the suction opening can advantageously be formed longitudinally and transversely in the center of an upper wall of the suction chamber.
Vorzugsweise weist der Staubsaugerkopf einen Motor, insbesondere einen Elektromotor, auf, der die Reinigungswalzen zur Rotation antreibt. Der Staubsaugerkopf kann einen Energiespeicher, beispielsweise einen Akku, aufweisen, der Energie zum Betreiben des Elektromotors bereitstellt. Alternativ kann vorteilhaft vorgesehen sein, dass der Elektromotor Energie von dem Sauggerät erhält, an das der Staubsaugerkopf angekoppelt ist. The vacuum cleaner head preferably has a motor, in particular an electric motor, which drives the cleaning rollers to rotate. The vacuum cleaner head can have an energy storage device, for example a battery, which provides energy to operate the electric motor. Alternatively, it can advantageously be provided that the electric motor receives energy from the suction device to which the vacuum cleaner head is coupled.
Vorzugsweise sind die Reinigungswalzen-Rotationsachsen horizontal und/oder parallel zueinander angeordnet. The cleaning roller rotation axes are preferably arranged horizontally and/or parallel to one another.
Vorzugsweise rotieren die Reinigungswalzen in entgegengesetzte Richtungen. Bei einer besonderen Ausführung rotieren die Reinigungswalzen derart in entgegengesetzte Richtungen, dass sich jeweils die zu der zu reinigenden Oberfläche ausgerichtete Außenseite der Reinigungswalzen (mit dem Luftstrom) zum Saugraum hin bewegt. Preferably the cleaning rollers rotate in opposite directions. In a special embodiment, the cleaning rollers rotate in opposite directions in such a way that the outside of the cleaning rollers, which is aligned with the surface to be cleaned, moves (with the air flow) towards the suction chamber.
Bei einer ganz besonders vorteilhaften Ausführung ist wenigstens eine, vorzugsweise gehäusefeste, Abstreifleiste vorhanden, deren Abstreifkante an einer der Reinigungswalzen anliegt. Vorzugsweise sind zwei Abstreifleisten vorhanden, deren Abstreifkanten jeweils an einer der Reinigungswalzen anliegen. Die Abstreifleisten dienen dazu, an den Reinigungswalzen anhaftenden Schmutz abzustreifen. In a particularly advantageous embodiment, there is at least one scraper strip, preferably fixed to the housing, whose scraper edge rests on one of the cleaning rollers. There are preferably two scraper strips, the scraper edges of which each rest on one of the cleaning rollers. The scraper strips are used to wipe off dirt adhering to the cleaning rollers.
Hierzu kann die Abstreifleiste in Axialrichtung betrachtet sekantisch oder tangential zu der Reinigungswalze, an der sie anliegt, ausgerichtet sein. Alternativ oder zusätzlich kann vorteilhaft vorgesehen sein, dass die Abstreifleiste ausgehend von einem Halteabschnitt der Abstreifleiste zu der Abstreifkante hin gegen die Bewegungsrichtung der Oberfläche der Reinigungswalze ausgerichtet ist. Die Abstreifleiste kann vorteilhaft, insbesondere quer zu ihrer Längserstreckungsrichtung, gekrümmt ausgebildet sein. Bei einer ganz besonders vorteilhaften Ausführung erstreckt sich die Abstreifleiste unmittelbar von einem der beiden Gehäuseabschnitte unmittelbar bis zu dem anderen der Gehäuseabschnitte. Auf diese Weise ist gewährleistet, dass die Reinigungswalze, an der die Abstreifleiste anliegt, über ihre gesamte Länge sauber gehalten wird. For this purpose, the scraper bar can be aligned secantally or tangentially to the cleaning roller on which it rests, viewed in the axial direction. Alternatively or additionally, it can advantageously be provided that the squeegee is aligned, starting from a holding section of the squeegee towards the squeegee edge, against the direction of movement of the surface of the cleaning roller. The scraper strip can advantageously be curved, in particular transversely to its longitudinal direction. In a particularly advantageous embodiment, the squeegee extends directly from one of the two housing sections directly to the other of the housing sections. This ensures that the cleaning roller, on which the scraper bar rests, is kept clean over its entire length.
Bei einer vorteilhaften Ausführung des erfindungsgemäßen Staubsaugerkopfs ist auf der Oberseite des Gehäuses ein Anschlusselement zum, insbesondere rastenden, Anschließen des Staubsaugerkopfs an ein Saugrohr eines Sauggerätes vorhanden. Das Anschlusselement kann vorteilhaft außerdem wenigstens eine elektrische Schnittstelle zum Übertragen von elektrischer Energie oder zum Übertragen von elektrischen Steuersignalen zum Steuern oder Regeln des Elektromotors (beispielsweise zum Steuern oder Regeln der Rotationsgeschwindigkeit und/oder der Rotationsrichtung der Reinigungswalzen) aufweisen. In an advantageous embodiment of the vacuum cleaner head according to the invention, a connection element for, in particular locking, connection of the vacuum cleaner head to a suction pipe of a suction device is present on the top of the housing. The connection element can advantageously also have at least one electrical interface for transmitting electrical energy or for transmitting electrical control signals for controlling or regulating the electric motor (for example for controlling or regulating the rotation speed and/or the direction of rotation of the cleaning rollers).
Vorzugsweise ist das Anschlusselement mittels einer winkelbeweglichen Kupplung mit dem Gehäuse verbunden. Die winkelbewegliche Kupplung kann beispielsweise ein Kardangelenk oder zwei hintereinander geschaltete Scharniergelenke aufweisen. Eine solche Ausführung erlaubt ein besonders präzises und flexibles Führen des Staubsaugerkopfs während eines Reinigungsvorganges. Preferably, the connection element is connected to the housing by means of an angularly movable coupling. The angularly movable coupling can, for example, have a cardan joint or two hinge joints connected in series. Such a design allows the vacuum cleaner head to be guided particularly precisely and flexibly during a cleaning process.
Die Reinigungswalzen können auf ihrer Außenseite beispielsweise Borsten und/oder ein Vlies und/oder einen Flor und/oder wenigstens eine Reinigungslippe aufweisen. The cleaning rollers can have, for example, bristles and/or a fleece and/or a pile and/or at least one cleaning lip on their outside.
Besonders vorteilhaft ist ein Set, das einen erfindungsgemäßen Staubsaugerkopf sowie Austauschwalzen aufweist. Die Austauschwalzen können zu den Reinigungswalzen gleich ausgebildet sein. Es ist vorteilhaft jedoch auch möglich, dass sich die Austauschwalzen von den Reinigungswalzen in wenigstens einer Eigenschaft unterscheiden und beispielsweise zur Verwendung auf andersartigen Oberflächen ausgebildet sind. A set that has a vacuum cleaner head according to the invention and replacement rollers is particularly advantageous. The replacement rollers can be designed in the same way as the cleaning rollers. However, it is also advantageously possible for the replacement rollers to differ from the cleaning rollers in at least one property and, for example, to be designed for use on different types of surfaces.
Von ganz besonderem Vorteil ist ein Staubsauger, insbesondere zur Bodenreinigung, der einen erfindungsgemäßen Staubsaugerkopf aufweist. Der Staubsauger kann ein Sauggerät aufweisen, an das der erfindungsgemäße Staubsaugerkopf (vorzugsweise zerstörungsfrei und/oder werkzeugfrei wieder lösbar) angeschlossen ist oder anschließbar ist. A vacuum cleaner, particularly for floor cleaning, which has a vacuum cleaner head according to the invention is particularly advantageous. The vacuum cleaner can have a suction device to which the vacuum cleaner head according to the invention (preferably non-destructive and/or releasable without tools) is connected or can be connected.
In den Figuren ist der Erfindungsgegenstand beispielhaft und schematisch dargestellt und wird anhand der Figuren nachfolgend beschrieben, wobei gleiche oder gleich wirkende Elemente auch in unterschiedlichen Ausführungsbeispielen zumeist mit denselben Bezugszeichen versehen sind. Dabei zeigen: Fig. 1 ein Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer perspektivischen Ansicht von unten, In the figures, the subject matter of the invention is shown as an example and schematically and is described below with reference to the figures, with identical or identically acting elements usually being provided with the same reference numerals even in different exemplary embodiments. Show: 1 shows an exemplary embodiment of a vacuum cleaner head according to the invention in a perspective view from below,
Fig. 2 das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer perspektivischen Ansicht von unten vor dem Einsetzen der die Kugeln beinhaltenden Kartuschen, 2 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a perspective view from below before inserting the cartridges containing the balls,
Fig. 3 das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in der Draufsicht von unten, 3 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a top view from below,
Fig. 4 das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einerFig. 4 shows the embodiment of a vacuum cleaner head according to the invention in one
Seitenansicht, side view,
Fig. 5 das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einerFig. 5 shows the embodiment of a vacuum cleaner head according to the invention in one
Schnittdarstellung entlang der in Figur 3 eingezeichneten Schnittlinie A-A, Sectional view along the section line AA shown in Figure 3,
Fig. 6 das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einerFig. 6 shows the embodiment of a vacuum cleaner head according to the invention in one
Schnittdarstellung entlang der in Figur 3 eingezeichneten Schnittlinie D-D, Sectional view along the section line DD shown in Figure 3,
Fig. 7 eine Kartusche mit einer darin gelagerten Kugel in der Draufsicht, 7 shows a cartridge with a ball mounted therein in a top view,
Fig. 8 die Kartusche mit einer darin gelagerten Kugel in einer Schnittdarstellung entlang der in Figur 7 eingezeichneten Schnittlinie B-B, 8 shows the cartridge with a ball mounted therein in a sectional view along the section line BB shown in FIG. 7,
Fig. 9 eine Darstellung des Ausführungsbeispiels eines erfindungsgemäßen Staubsaugerkopfs, die im Wesentlichen der Figur 1 entspricht mit Ergänzungen zur Erläuterung der Anordnung der Kugeln, 9 shows a representation of the exemplary embodiment of a vacuum cleaner head according to the invention, which essentially corresponds to FIG. 1 with additions to explain the arrangement of the balls,
Fig. 10 eine Darstellung des Ausführungsbeispiels eines erfindungsgemäßen Staubsaugerkopfs, die im Wesentlichen der Figur 3 entspricht mit Ergänzungen zur Erläuterung der Anordnung der Kugeln. 10 is a representation of the exemplary embodiment of a vacuum cleaner head according to the invention, which essentially corresponds to FIG. 3 with additions to explain the arrangement of the balls.
Fig. 1 zeigt ein Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer perspektivischen Ansicht von unten. Der Staubsaugerkopf weist ein Gehäuse 1 sowie zwei zur Rotation angetriebene Reinigungswalzen 2 auf. Zwischen den Reinigungswalzen 2 ist ein Saugraum 3 ausgebildet. Das Gehäuse 1 weist zwei zueinander parallele Gehäuseabschnitte 4 auf, von denen jeder an ein Ende jeder Reinigungswalze 2 angrenzt. Die Gehäuseabschnitte 4 begrenzen den Saugraum 3 seitlich. Die Gehäuseabschnitte 4 sind über ein oberhalb der Reinigungswalzen angeordneten Zwischengehäuseabschnitt 5 des Gehäuses 1 miteinander verbunden. In dem Zwischengehäuseabschnitt 5 kann vorteilhaft ein Elektromotor angeordnet sein, der die Reinigungswalzen 2 zur Rotation antreibt. In den Gehäuseabschnitten 4 sind die (nicht dargestellten) Lager zum rotierbaren Lagern der Reinigungswalzen 2 angeordnet. In den Gehäuseabschnitten 4 können (nicht dargestellte) Drehmomentübertragungselemente (beispielsweise Teile eines Riementriebs) angeordnet sein, die dazu dienen ein Drehmoment von dem Elektromotor zu den Reinigungswalzen 2 zu übertragen. Fig. 1 shows an embodiment of a vacuum cleaner head according to the invention in a perspective view from below. The vacuum cleaner head has a housing 1 and two cleaning rollers 2 that are driven to rotate. A suction space 3 is formed between the cleaning rollers 2. The housing 1 has two mutually parallel housing sections 4, each of which adjoins one end of each cleaning roller 2. The housing sections 4 delimit the suction chamber 3 laterally. The housing sections 4 are connected to one another via an intermediate housing section 5 of the housing 1 arranged above the cleaning rollers. An electric motor can advantageously be arranged in the intermediate housing section 5, which drives the cleaning rollers 2 to rotate. The bearings (not shown) for rotatably supporting the cleaning rollers 2 are arranged in the housing sections 4. Torque transmission elements (not shown) (for example parts of a belt drive) can be arranged in the housing sections 4 and serve to transmit torque from the electric motor to the cleaning rollers 2.
Der Staubsaugerkopf weist vier jeweils relativ zu dem Gehäuse 1 in alle Rotationsrichtungen um ihren Kugelmittelpunkt rotierbar gelagerte Kugeln 6 auf, die dazu ausgebildet und angeordnet ist, bei einem Reinigungsvorgang auf der zu reinigenden Oberfläche abzurollen. Jeder der beiden Gehäuseabschnitte 4 wird von zwei der rotierbar gelagerten Kugeln 6 getragen, wobei die zwei Kugeln 6 jeweils in horizontal entgegengesetzten Endbereichen der zwei zueinander parallelen Gehäuseabschnitte angeordnet sind. The vacuum cleaner head has four balls 6 which are mounted so that they can rotate relative to the housing 1 in all directions of rotation about their ball center, which are designed and arranged to roll on the surface to be cleaned during a cleaning process. Each of the two housing sections 4 is supported by two of the rotatably mounted balls 6, the two balls 6 each being arranged in horizontally opposite end regions of the two mutually parallel housing sections.
Jeweils zwischen den rotierbar gelagerten Kugeln 6 ist an den beiden Gehäuseabschnitte 4 ein Filzsteifen 21 angeklebt, um den Saugraum 3 seitlich abzudichten. A felt strip 21 is glued to the two housing sections 4 between the rotatably mounted balls 6 in order to seal the suction chamber 3 laterally.
Der Staubsaugerkopf weist in dem Saugraum 3 zwei längliche Luftleitvorrichtungen 7 auf, die die eingesaugte Luft zu einer Säugöffnung 8 leiten. Durch die Säugöffnung 8 strömt die eingesaugte Luft aus dem Saugraum 3 in das (nicht dargestellte) Saugrohr eines (nicht dargestellten) Sauggerätes, an das der Staubsaugerkopf angeschlossen ist. Die Luftleitvorrichtungen 7 dienen dazu, eine laminare Strömung zu erreichen und Verwirbelungen sowie Bereiche mit vermindertem Unterdrück in dem Saugraum 3 zu vermeiden. Die Luftleitvorrichtungen 7 sind mit ihrer Längserstreckungsrichtung parallel zu den Reinigungswalzen-Rotationsachsen 9 der beiden Reinigungswalzen angeordnet. Jede der Luftleitvorrichtungen 7 grenzt unmittelbar an einen der beiden Gehäuseabschnitte 4 an. The vacuum cleaner head has two elongated air guide devices 7 in the suction chamber 3, which direct the sucked in air to a suction opening 8. The sucked-in air flows through the suction opening 8 from the suction chamber 3 into the suction pipe (not shown) of a suction device (not shown) to which the vacuum cleaner head is connected. The air guide devices 7 serve to achieve a laminar flow and to avoid turbulence and areas with reduced negative pressure in the suction chamber 3. The air guiding devices 7 are arranged with their longitudinal extension parallel to the cleaning roller rotation axes 9 of the two cleaning rollers. Each of the air guiding devices 7 borders directly on one of the two housing sections 4.
Jede der Luftleitvorrichtungen 7 ist konisch und sich in Richtung auf die Säugöffnung 8 verjüngend ausgebildet. Die Luftleitvorrichtungen sind in dem Saugraum 3 spiegelsymmetrisch ausgebildet und angeordnet. Each of the air guide devices 7 is conical and tapers towards the suction opening 8. The air guiding devices are designed and arranged in mirror symmetry in the suction chamber 3.
Die Säugöffnung 8 kann ist in Vertikalrichtung betrachtet zwischen den Luftleitvorrichtungen 7, nämlich zwischen zwei stirnseitigen Enden der Luftleitvorrichtungen 7, angeordnet. Die Luftleitvorrichtungen 7 sind derart ausgebildet und angeordnet, dass im Betreib des Staubsaugerkopfs ein Spalt zwischen ihnen und zu der reinigenden Oberfläche verbleibt. Viewed in the vertical direction, the suction opening 8 can be arranged between the air guiding devices 7, namely between two front ends of the air guiding devices 7. The air guiding devices 7 are designed and arranged in such a way that during operation of the The vacuum cleaner head leaves a gap between them and the surface being cleaned.
Fig. 2 zeigt das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer perspektivischen Ansicht von unten vor dem Einsetzen der die Kugeln 6 beinhaltenden Kartuschen 10. Die Kugeln 6 sind in den Kartuschen 10 rotierbar gelagert, was insbesondere in der Figur 8 im Detail dargestellt ist. Fig. 2 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a perspective view from below before inserting the cartridges 10 containing the balls 6. The balls 6 are rotatably mounted in the cartridges 10, which is shown in detail in particular in Figure 8.
Vorzugswese sind die Kartusche 10 samt der darin jeweils rotierbar gelagerten Kugel als eigenständige Baueinheit hergestellt und werden als solche montiert. Hierfür weist das Gehäuse 1 Aufnahmen 1 1 auf, in die die Kartuschen 10 eingefügt werden. Preferably, the cartridge 10 together with the rotatably mounted ball therein are manufactured as an independent structural unit and are assembled as such. For this purpose, the housing 1 has receptacles 11 into which the cartridges 10 are inserted.
Fig. 3 zeigt das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in der Draufsicht von unten. Fig. 3 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a top view from below.
Es sind zwei Abstreifleisten 12 vorhanden, deren Abstreifkanten jeweils an einer der Reinigungswalzen 2 anliegen. Die Abstreifleisten 12 dienen dazu, an den Reinigungswalzen 2 anhaftenden Schmutz abzustreifen. There are two scraper strips 12, the scraper edges of which each rest on one of the cleaning rollers 2. The scraper strips 12 serve to wipe off dirt adhering to the cleaning rollers 2.
Fig. 4 zeigt das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer Seitenansicht. Es ist zu erkennen, dass jeweils ein Teil der Kugel nach unten über den Gehäuseabschnitt 4 vorsteht. Fig. 4 shows the embodiment of a vacuum cleaner head according to the invention in a side view. It can be seen that part of the ball protrudes downwards over the housing section 4.
Fig. 5 zeigt das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer Schnittdarstellung entlang der in Figur 3 eingezeichneten Schnittlinie A-A. Es ist zu erkennen, dass die beiden Kugeln 6 jeweils in entgegengesetzten Endbereichen des Gehäuseabschnitts 4 angeordnet sind. Fig. 5 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a sectional view along the section line AA shown in Figure 3. It can be seen that the two balls 6 are each arranged in opposite end regions of the housing section 4.
Fig. 6 zeigt das Ausführungsbeispiel eines erfindungsgemäßen Staubsaugerkopfs in einer Schnittdarstellung entlang der in Figur 3 eingezeichneten Schnittlinie D-D. In dieser Figur sind insbesondere die zwei Abstreifleisten 12 zu erkennen, deren Abstreifkanten 13 jeweils an einer der Reinigungswalzen 2 anliegen. Fig. 6 shows the exemplary embodiment of a vacuum cleaner head according to the invention in a sectional view along the section line DD shown in Figure 3. In this figure, the two scraper strips 12 can be seen in particular, the scraper edges 13 of which each rest against one of the cleaning rollers 2.
Fig. 7 zeigt eine Kartusche 10 einer kreisrohrförmigen Wandung 14 und mit der darin gelagerten Kugel 6 in der Draufsicht, während die Fig. 8 die Kartusche mit einer darin gelagerten Kugel in einer Schnittdarstellung entlang der in Figur 7 eingezeichneten Schnittlinie B-B zeigt. Fig. 7 shows a cartridge 10 with a circular tube-shaped wall 14 and with the ball 6 mounted therein in a top view, while Fig. 8 shows the cartridge with a ball mounted therein in a sectional view along the section line BB shown in Figure 7.
In der Kartusche 10 sind Wälzkörper 15, nämlich Wälzkugeln, angeordnet, die zu einem Wälzlager zum rotierbaren Lagern der Kugel 6 gehören. Die Kugel 6 steht entlang eines Kleinkreises 16 der Kugel 6 mit den Wälzkörpern 15 in unmittelbarem Kontakt. Rolling elements 15, namely rolling balls, are arranged in the cartridge 10 and belong to a rolling bearing for rotatably supporting the ball 6. The ball 6 stands along one Small circle 16 of the ball 6 with the rolling elements 15 in direct contact.
Die Kartusche 10 weist ein Kartuschengehäuse 19 auf, zu dem die Wandung 14 gehört, mit einer kreisrunden Öffnung 20, durch die ein Teil der Kugel 6 nach außen ragt. Der Durchmesser 17 der Öffnung 20 ist kleiner, als der Durchmesser 18 der Kugel 6. Dies hat den ganz besonderen Vorteil, dass die Kugel 6 nicht durch die Öffnung 20 nach außen fallen kann und dass keine zusätzlichen Bauteile erforderlich sind, um das Herausfallen der Kugel 6 durch die Öffnung 20 zu verhindern. Der Durchmesser 17 der Öffnung 20 kann vorteilhaft das 0,9 bis 0,98-Fache des Durchmessers 18 der Kugel 6 betragen. The cartridge 10 has a cartridge housing 19, to which the wall 14 belongs, with a circular opening 20 through which part of the ball 6 projects outwards. The diameter 17 of the opening 20 is smaller than the diameter 18 of the ball 6. This has the very special advantage that the ball 6 cannot fall outwards through the opening 20 and that no additional components are required to prevent the ball from falling out 6 through the opening 20 to prevent. The diameter 17 of the opening 20 can advantageously be 0.9 to 0.98 times the diameter 18 of the ball 6.
Die Figuren 9 und 10 entsprechen im Wesentlichen den Figuren 1 und 3, wobei zusätzlich eine erste Vertikalebene 22, die die Reinigungswalzen-Rotationsachse 9 einer ersten der beiden Reinigungswalzen 2 beinhaltet, und eine zweite Vertikalebene 23 die die Reinigungswalzen- Rotationsachse der zweiten der beiden Reinigungswalzen 2 beinhaltet sowie Seiten- Vertikalebenen, in denen sich die stirnseitigen Enden der Reinigungswalzen 2 befinden, eingezeichnet 24 sind. Figures 9 and 10 essentially correspond to Figures 1 and 3, with an additional first vertical plane 22, which contains the cleaning roller rotation axis 9 of a first of the two cleaning rollers 2, and a second vertical plane 23 which contains the cleaning roller rotation axis of the second of the two cleaning rollers 2 includes as well as side vertical planes in which the front ends of the cleaning rollers 2 are located, shown 24.
Die Kugeln 6 sind außerhalb des Bereichs zwischen der ersten Vertikalebene 22 und einer zweiten Vertikalebene 23 angeordnet. Außerdem sind die Kugeln 6 außerhalb des Bereichs zwischen den Seiten-Vertikalebenen angeordnet. The balls 6 are arranged outside the area between the first vertical plane 22 and a second vertical plane 23. In addition, the balls 6 are arranged outside the area between the side vertical planes.
Bezuqszeichenliste: Reference character list:
1 Gehäuse 1 case
2 Reinigungswalze 2 cleaning rollers
3 Saugraum 3 suction chamber
4 Gehäuseabschnitt 4 housing section
5 Zwischengehäuseabschnitt 5 intermediate housing section
6 Kugel 6 ball
7 Luftleitvorrichtung 7 air guide device
8 Säugöffnung 8 suckling opening
9 Reinigungswalzen-Rotationsachse9 cleaning roller rotation axis
10 Kartusche 10 cartridge
1 1 Aufnahme 1 1 recording
12 Abstreifleiste 12 squeegee
13 Abstreifkante 13 scraper edge
14 Wandung 14 wall
15 Wälzkörper 15 rolling elements
16 Kleinkreis 16 small circle
17 Durchmesser der Öffnung 20 17 opening diameter 20
18 Durchmesser der Kugel 6 18 diameter of the sphere 6
19 Kartuschengehäuse 19 cartridge housings
20 Öffnung 20 opening
21 Filzsteifen 21 felt strips
22 Erste Vertikalebene 22 First vertical plane
23 Zweite Vertikalebene 23 Second vertical plane
24 Seiten-Vertikalebene 24 page vertical plane
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU502126A LU502126B1 (en) | 2022-05-19 | 2022-05-19 | Vacuum cleaner head, especially for floor cleaning |
| LULU502126 | 2022-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023222912A1 true WO2023222912A1 (en) | 2023-11-23 |
Family
ID=82494008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/063532 Ceased WO2023222912A1 (en) | 2022-05-19 | 2023-05-19 | Vacuum cleaner head, in particular for cleaning floors |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN219813984U (en) |
| LU (1) | LU502126B1 (en) |
| WO (1) | WO2023222912A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1105672S1 (en) | 2023-08-30 | 2025-12-09 | Sharkninja Operating Llc | Vacuum cleaner and vacuum nozzle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1208165A (en) * | 1914-05-15 | 1916-12-12 | Fay T Kent | Vacuum cleaning-tool. |
| EP2521475A1 (en) | 2010-01-08 | 2012-11-14 | Dyson Technology Limited | A cleaner head |
| DE202011051566U1 (en) * | 2011-10-06 | 2013-01-08 | Melitta Haushaltsprodukte Gmbh & Co Kommanditgesellschaft | vacuum cleaner nozzle |
| KR20160011998A (en) * | 2014-07-23 | 2016-02-02 | 김왕식 | Method for cleaning wiper cleaner head unit |
| WO2021064420A1 (en) | 2019-10-02 | 2021-04-08 | Dyson Technology Limited | A cleaner head for a vacuum cleaning appliance |
-
2022
- 2022-05-19 LU LU502126A patent/LU502126B1/en active IP Right Grant
- 2022-12-26 CN CN202223470213.XU patent/CN219813984U/en active Active
-
2023
- 2023-05-19 WO PCT/EP2023/063532 patent/WO2023222912A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1208165A (en) * | 1914-05-15 | 1916-12-12 | Fay T Kent | Vacuum cleaning-tool. |
| EP2521475A1 (en) | 2010-01-08 | 2012-11-14 | Dyson Technology Limited | A cleaner head |
| DE202011051566U1 (en) * | 2011-10-06 | 2013-01-08 | Melitta Haushaltsprodukte Gmbh & Co Kommanditgesellschaft | vacuum cleaner nozzle |
| KR20160011998A (en) * | 2014-07-23 | 2016-02-02 | 김왕식 | Method for cleaning wiper cleaner head unit |
| WO2021064420A1 (en) | 2019-10-02 | 2021-04-08 | Dyson Technology Limited | A cleaner head for a vacuum cleaning appliance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1105672S1 (en) | 2023-08-30 | 2025-12-09 | Sharkninja Operating Llc | Vacuum cleaner and vacuum nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN219813984U (en) | 2023-10-13 |
| LU502126B1 (en) | 2023-11-30 |
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