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EP4176788B1 - Cleaning unit for a suction nozzle or a cleaning robot - Google Patents

Cleaning unit for a suction nozzle or a cleaning robot Download PDF

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Publication number
EP4176788B1
EP4176788B1 EP21206602.1A EP21206602A EP4176788B1 EP 4176788 B1 EP4176788 B1 EP 4176788B1 EP 21206602 A EP21206602 A EP 21206602A EP 4176788 B1 EP4176788 B1 EP 4176788B1
Authority
EP
European Patent Office
Prior art keywords
working body
motor
cleaning
cleaning unit
shaft
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.)
Active
Application number
EP21206602.1A
Other languages
German (de)
French (fr)
Other versions
EP4176788A1 (en
Inventor
Dennis Hülsmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vorwerk and Co Interholding GmbH filed Critical Vorwerk and Co Interholding GmbH
Priority to EP21206602.1A priority Critical patent/EP4176788B1/en
Priority to CN202211360136.4A priority patent/CN116942007A/en
Publication of EP4176788A1 publication Critical patent/EP4176788A1/en
Application granted granted Critical
Publication of EP4176788B1 publication Critical patent/EP4176788B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0427—Gearing or transmission means therefor
    • 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
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2847—Surface treating elements

Definitions

  • the invention relates to a cleaning unit for a device for cleaning a substrate, with at least one motor and at least one first working body.
  • the first working body can be connected to the motor in such a way that the first working body can be rotated directly by the motor.
  • Cleaning units of this type are used in household appliances, such as floor nozzles for vacuum cleaners or cleaning robots.
  • the working body can be rotated directly by a motor and is used, for example, to feed dirt towards a suction channel or to remove dirt from the surface.
  • the working bodies are designed, for example, as brush bodies or slatted rollers.
  • the cleaning devices are used, for example, to clean carpets or hard floors.
  • CN 105 125 141 A discloses a cleaning unit for a vacuum cleaner, in which two working bodies are arranged on a pneumatically driven impeller 2.
  • the impeller is designed as a radial turbine.
  • EP 0 947 155 A2 discloses a rotating brush unit for a vacuum cleaner.
  • the motor is arranged in such a way that it rotates the working body, which is designed as a roller is designed to drive directly.
  • the motor is also designed as an electric motor.
  • US 2002/129462 A1 discloses a vacuum cleaner with a floor unit having a plurality of rotating brushes.
  • the brushes of the floor unit are driven by an electric motor which is connected to the cleaning rollers via a gear.
  • DE 10 2014 114 813 A1 discloses a surface cleaning machine and a method for operating a surface cleaning machine.
  • the surface cleaning machine has two rotatable cleaning rollers that can be driven by a drive element.
  • the drive motor is arranged orthogonally to the axis of rotation of the cleaning rollers in the housing and is connected to the cleaning rollers via a gear device.
  • DE 102 42 257 A1 discloses an automatically movable floor dust collector and a combination of such a collector with a base station.
  • the collector has a rotating brush on the underside that can be driven by an electric motor.
  • the cleaning units known from the state of the art have the disadvantage that they either ensure good edge cleaning while simultaneously making brush changes easy or good energy efficiency, especially in the case of battery-operated devices.
  • the present invention is therefore based on the object of specifying a cleaning unit for a device for cleaning a substrate, in which both good edge cleaning with simplified brush changes and at the same time increased energy efficiency are ensured.
  • the above-mentioned object is achieved in a generic cleaning unit with the feature content of the characterizing part of claim 1, namely in that at least one second working body is present, and that the second working body can be connected to the motor in such a way that the second working body can be rotated directly by the motor, wherein the motor is designed as an electric motor.
  • Suction nozzles for vacuum cleaners are usually connected to the suction device in a flow-tight manner via a flexible suction hose and/or a handling tube.
  • the suction nozzle is directly connected to the suction device in a flow-tight manner.
  • At least one rotatable working body is usually arranged on such suction nozzles, which loosens dirt from the surface or, for example, removes dirt from a carpet.
  • a suction nozzle has in particular at least one cleaning unit according to the invention, which has at least one motor and at least one first working body and at least one second working body.
  • the first working body and the second working body are connected to the motor in such a way that both the first working body and the second working body can be rotated directly by the motor.
  • "Direct" in this context means that a rotation of the motor is transmitted to the first working body and the second working body without the presence of a gear.
  • the first working body and the second working body are preferably arranged at a distance from one another on the cleaning unit.
  • the first working body and the second working body are, for example, held rotatably on the cleaning unit such that the axis of rotation or the axes of rotation of the first working body and the second working body are aligned substantially parallel to a surface to be treated in the operating state.
  • the cleaning unit is held in the assembled state such that the first and the second working body at least partially touch a surface to be treated in the operating state.
  • Devices for cleaning a substrate in the sense of the present invention are for example Suction nozzles, in particular floor nozzles, for vacuum cleaners, nozzles for handheld vacuum cleaners or cleaning devices that move autonomously in a cleaning environment, for example vacuum robots or mop robots or vacuum/mop robots.
  • the present invention therefore also relates to a floor nozzle, a nozzle and/or a cleaning robot, with a cleaning unit described above or below.
  • a direct drive of two working bodies according to the invention has the advantage over a drive with a gear that significantly better energy efficiency and a lower operating speed are required.
  • the increased energy efficiency contributes to a longer battery life for battery-operated devices, and the lower operating speed leads to better acoustic properties.
  • the use of two working bodies makes replacement easier and improves cleaning performance in peripheral areas.
  • the first working body and/or the second working body is/are designed as a cleaning tool.
  • the first working body and/or the second working body are designed as a cleaning brush, in particular as a brush roller.
  • a cleaning brush for example, has a large number of filaments, such as bristles, attached to it. These filaments can be arranged in the form of individually arranged tufts or in the form of brush strips or brush strips arranged in a wave shape.
  • a cleaning roller has a plurality of cleaning projections or cleaning lamellae.
  • the first working body or the second working body is at least partially made of silicone, e.g. at least cleaning projections or cleaning lamellae.
  • a further embodiment of the cleaning unit provides that the first working body and/or the second working body can be directly connected to at least one rotor of the motor.
  • the first working body is connected to a first rotor of the motor and the second working body is connected to a second rotor of the motor.
  • the connection between the working bodies and the respective rotor is, for example, form-fitting and/or force-fitting and/or force-form-fitting.
  • the first rotor is held on a first end face of the motor so as to be rotatable about a motor axis and the second rotor is held on a second end face of the motor so as to be rotatable about the motor axis.
  • the first working body is connected to the first rotor and the second working body is connected to the second rotor.
  • the motor has at least one shaft and that the first working body and/or the second working body can be connected to the shaft, preferably directly.
  • the shaft is preferably connected to the at least one rotor.
  • the connection between the first working body or the second working body and the shaft is, for example, designed to be positively locking and/or force-locking and/or force-form-locking.
  • the shaft has at least one projection or geometry by means of which a torque can be transmitted to the first working body and/or the second working body.
  • the first working body and/or the second working body are in any case connected to the rotor of the motor and/or to the shaft in such a way that a torque can be transmitted, i.e. the first working body and/or the second working body can be rotated directly by the motor.
  • the first working body and/or the second working body can be detachably connected to the shaft and/or detachably to the at least one rotor of the motor.
  • the detachability of the connection between the first working body or the second working body and the rotor and/or the shaft ensures interchangeability of the first working body and/or the second working body in order to use different working bodies for different cleaning tasks or to replace a worn working body.
  • a first rotor of the motor and/or a second rotor of the motor has at least one shaft interface in order to be coupled to a first shaft or a second shaft.
  • the first shaft is, for example, part of the first working body and the second shaft part of the second working body, wherein the first working body and/or the second working body can be coupled to the respective rotor via the shaft interface.
  • the shaft interface is designed in such a way that a rotation of the rotor can be transferred to the first shaft or the second shaft.
  • the first shaft and the second shaft are mounted on the cleaning unit and/or the cleaning device.
  • a further embodiment of the cleaning unit provides that a single shaft is connected in a rotationally fixed manner to a rotor of the motor, in particular to a first and a second rotor of the motor.
  • the shaft is connected to a rotor or rotors in a form-fitting, material-fitting and/or force-fitting manner.
  • the shaft has at least one projection that interacts in a form-fitting manner with at least one rotor or one of the rotors of the motor.
  • the shaft is connected to at least one rotor, preferably to both rotors, in such a way that a torque can be transmitted from the rotors to the shaft.
  • the first working body and the second working body can be exchanged particularly advantageously if, according to a further embodiment of the cleaning unit, there is a single shaft and the shaft has a first free end and a second free end.
  • the first working body can be arranged on the first free end and the second working body on the second free end.
  • the free ends preferably protrude from the first rotor and the second rotor, respectively, so that the first The working body or the second working body can be easily plugged on.
  • the first working body is locked onto the first free end and the second working body is locked onto the second free end.
  • the motor is arranged, in particular along the shaft, preferably centrally, between the first working body and the second working body.
  • the shaft preferably passes through the motor in such a way that it protrudes from the motor on both sides of the motor and has the same length in each case. This forms the free ends of the shaft onto which the first working body and the second working body can be attached.
  • the shaft is preferably mounted within the motor.
  • the first working body and the second working body are arranged coaxially on a single shaft.
  • the first working body and the second working body therefore rotate together on the shaft.
  • the shaft is preferably arranged on the cleaning device in such a way that the first working body and the second working body rotate essentially parallel to a surface to be cleaned.
  • the shaft is supported by at least one bearing, in particular by at least two bearings.
  • the shaft is supported in a stator of the motor, namely by the shaft protruding from the motor on both sides.
  • two bearings in particular plain bearings or ball bearings, arranged at a distance from one another are provided in the stator, which support the shaft.
  • the shaft is preferably made of a corrosion-resistant steel.
  • the Motor in particular the stator of the motor, is held on a swing arm.
  • the swing arm holds the motor and also the two working bodies, so that when the swing arm moves, the working bodies and the motor are moved.
  • the swing arm is preferably spring-mounted, so that when assembled, a spring force is exerted in the direction of a surface to be cleaned. If a user lifts the device with the cleaning unit, the weight of the motor as well as the working body and the spring force cause the cleaning unit to be moved slightly in the direction of the surface.
  • the cleaning unit can preferably be attached to a cleaning device with the swing arm.
  • the swing arm is preferably designed in such a way that it completely encompasses at least the stator of the motor.
  • the motor is in particular held on the swing arm in such a way that the shaft mounted in the motor protrudes from the swing arm on the right and left.
  • the working bodies are therefore arranged on the right and left of the swing arm.
  • the swing arm is arranged centrally between the first working body and the second working body.
  • a further embodiment of the cleaning unit provides that the motor is designed, for example, as an axial flux machine, in particular a permanent magnet machine, or as a radial flux machine.
  • the axial flux machine can ensure a compact design.
  • a rotor can be arranged on each end face of the axial flux machine, so that each working body is assigned a rotor.
  • a radial flux machine is designed, for example, as an internal rotor or external rotor.
  • At least one rotor of the motor preferably both rotors of the motor, each have at least one permanent magnet or at least one coil.
  • each rotor has at least two, three or four permanent magnets, which are distributed at a distance from one another over the circumference.
  • the stator of the motor is designed in one or two parts. It is preferably provided that the stator is split axially in the middle. Depending on the design of the cleaning unit, it is also provided that the stator is designed in one piece, for example at least partially from sintered metal powder or from electrical sheet.
  • the invention further relates to a cleaning device, in particular a vacuum and/or wiping robot, with at least one cleaning unit according to one of the above-described embodiments.
  • the invention relates to a suction nozzle for a vacuum cleaner, in particular a floor nozzle, comprising at least one cleaning unit according to one of the previously described embodiments.
  • the invention relates to the use of a cleaning unit, preferably according to one of the embodiments described above or below, with at least one motor, at least one first working body and at least one second working body, wherein the motor is designed as an electric motor, wherein the first working body and the second working body are directly rotatable by the motor, wherein the motor is arranged centrally between the first working body and the second working body, for arrangement in a cleaning device, in particular a cleaning robot or a floor nozzle, for cleaning a surface.
  • a cleaning unit preferably according to one of the embodiments described above or below, with at least one motor, at least one first working body and at least one second working body, wherein the motor is designed as an electric motor, wherein the first working body and the second working body are directly rotatable by the motor, wherein the motor is arranged centrally between the first working body and the second working body, for arrangement in a cleaning device, in particular a cleaning robot or a floor nozzle, for cleaning a surface.
  • Fig. 1 shows an embodiment of a cleaning unit 1 in a device 2 for cleaning a surface, which is designed here as a suction nozzle, in particular a floor nozzle, for a vacuum cleaner - not shown.
  • the cleaning unit 1 has a motor 3, a first working body 4 and a second working body 5.
  • the first working body 4 and the second working body 5 are designed in this embodiment as roller-shaped cleaning brushes with bristles 6.
  • the motor 3 has a stator 7 and two rotors 8 arranged on the front sides of the stator 7.
  • the motor 3 further comprises a shaft 9 which extends centrally through the motor 3 so that it emerges from the motor 3 on both sides.
  • the shaft 9 thus has a first free end 9a and a second free end 9b.
  • the first free end 9a is connected to the first working body 4 and the second free end 9b is connected to the second working body 5 by the working bodies 4, 5 being plugged onto the free ends 9a, 9b.
  • the first working body 4 and the second working body 5 are detachably connected to the respective rotor 8 and the shaft 9, so that the first working body 4 and the second working body 5 are interchangeable.
  • the shaft 9 is connected to the two rotors 8 in a rotationally fixed manner, so that the shaft 9 always rotates at the same speed when the rotors 8 move.
  • the first working body 4 and the second working body 5 are arranged coaxially and at a distance from one another on the shaft 9.
  • the motor 3 is arranged along the shaft 9 centrally between the first working body 4 and the second working body 5.
  • the shaft 9 is mounted in the stator 7 of the motor 3 with two bearings 10, which in this embodiment are designed as ball bearings.
  • the stator 7 has a central recess 11 for the arrangement of the bearings 10 and for the passage of the shaft 9.
  • the motor 3, in particular the stator 7 of the motor 3, is held in a spring-mounted swing arm 12.
  • the cleaning unit 1 is mounted on the floor nozzle 2 with the spring-mounted swing arm 12.
  • the spring-mounted swing arm 12 enables the cleaning unit 1 to avoid a surface to be cleaned.
  • the swing arm 12 completely surrounds the stator 7 of the motor 3.
  • the stator 7 of the motor 3 has eight coils 13 to which a current can be applied.
  • the rotors 8 each have four permanent magnets 14 distributed over the circumference of the rotors 8.
  • Fig. 2 shows a further embodiment of a cleaning unit 1 for a device 2 for cleaning a surface.
  • the device 2 is designed as a suction nozzle, in particular a floor nozzle, for a vacuum cleaner - not shown.
  • the device 2 has first rollers 15 and second rollers 16 for guiding on a surface - not shown.
  • the device 2 has an interface 17 to a vacuum cleaner suction pipe - not shown - for removing the suction air.
  • the cleaning unit 1 is arranged in a suction chamber 18.
  • the first working body 4 and the second working body 5 are held rotatably on a shaft 9.
  • the shaft 9 protrudes on both sides from the motor 3 mounted in a rocker 12.
  • the first working body 4 and the second working body 5 are designed as brush rollers with lamellae.
  • the bristles 6 are arranged in a wave-like manner here.
  • the first working body 4 and the second working body 5 are detachably held on a first free end 9a and a second free end 9b of the shaft 9.
  • the cleaning unit 1 is surrounded by the suction chamber 18, from which the dirt loosened by the working bodies 4, 5 is sucked along the path 18a and transferred to a vacuum cleaner suction pipe (not shown) at the interface 17.
  • the rocker 12 is spring-mounted on a rocker shaft 19, with a spring unit 20 acting on the rocker shaft 19.
  • the spring unit 20 ensures that the cleaning unit 1 has sufficient contact pressure on the surface to be cleaned and that the working bodies 4, 5 move away from the surface.
  • Fig. 3 shows an embodiment of a cleaning unit 1 in a device 2, which in this embodiment is designed as a cleaning robot, here a vacuum robot, that moves autonomously in a cleaning environment.
  • the device 2 has first rollers 15 and second rollers 16 for movement on a surface (not shown). The first rollers 15 are driven.
  • the cleaning unit 1 is arranged in a suction chamber 18.
  • the first working body 4 and the second working body 5 are held rotatably on a shaft 9.
  • the shaft 9 protrudes on both sides from the motor 3 mounted in a rocker 12.
  • the first working body 4 and the second working body 5 are designed as brush rollers with lamellae.
  • the bristles 6 are arranged in a wave-like manner here.
  • the first working body 4 and the second working body 5 are detachably held on a first free end 9a and a second free end 9b of the shaft 9.
  • the cleaning unit 1 is surrounded by the suction chamber 18, from which the dirt released by the working bodies 4, 5 is sucked along the path 18a and collected in a dirt collection container arranged in the housing 22 of the device.
  • the rocker 12 is spring-mounted on a rocker shaft 19, in which a spring unit 20 acts on the rocker shaft 19.
  • the spring unit 20 ensures sufficient contact pressure of the cleaning unit 1 on a surface to be cleaned and that the working bodies 4, 5 move away from the surface.
  • Fig. 4 shows an embodiment of a motor 3 for a cleaning unit 1, for example according to one of the embodiments according to Fig. 1 to Fig. 3 .
  • the motor 3 has a stator 7 with a total of eight coils 13, each wound around a coil core 13a.
  • the motor 3 shown is a permanent-magnet axial flux machine, in which the rotors 8 are arranged on the front side of the stator 7.
  • the two rotors 8 each have four permanent magnets 14, which are distributed as arc-shaped segments over the circumference of the rotors 8.
  • a shaft 9 - see Fig. 1 to Fig. 3 - can be stored in a central recess 11 in the stator 7 and can be connected to the rotors 8 in recesses 21.

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

Description

Die Erfindung betrifft eine Reinigungseinheit für eine Vorrichtung zum Reinigen eines Untergrunds, mit mindestens einem Motor und mindestens einem ersten Arbeitskörper. Der erste Arbeitskörper ist derart mit dem Motor verbindbar, dass der erste Arbeitskörper von dem Motor direkt rotierbar ist.The invention relates to a cleaning unit for a device for cleaning a substrate, with at least one motor and at least one first working body. The first working body can be connected to the motor in such a way that the first working body can be rotated directly by the motor.

Gattungsgemäße Reinigungseinheiten werden beispielsweise in Haushaltsgeräten, z. B. Bodendüsen für Staubsauger oder Reinigungsrobotern, eingesetzt. Der Arbeitskörper ist von einem Motor direkt rotierbar und dient beispielsweise dem Zuführen von Verschmutzung in Richtung eines Saugkanals oder dem Ablösen von Verschmutzungen von dem Untergrund. Die Arbeitskörper sind beispielsweise als Bürstenkörper oder Lamellenwalzen ausgebildet. Die Reinigungsgeräte werden beispielsweise zur Reinigung von Teppich- oder Hartböden verwendet.Cleaning units of this type are used in household appliances, such as floor nozzles for vacuum cleaners or cleaning robots. The working body can be rotated directly by a motor and is used, for example, to feed dirt towards a suction channel or to remove dirt from the surface. The working bodies are designed, for example, as brush bodies or slatted rollers. The cleaning devices are used, for example, to clean carpets or hard floors.

DE 10 2018 119 181 A1 offenbart beispielsweise eine Saugdüse für einen Staubsauger sowie einen Staubsauger zum Reinigen eines Untergrundes. Die Bürstenwalzen werden über ein Getriebe mittels eines Motors angetrieben, um Verschmutzungen aus einem Teppich herauszulösen und einem Saugkanal zuzuführen. DE 10 2018 119 181 A1 For example, discloses a suction nozzle for a vacuum cleaner and a vacuum cleaner for cleaning a surface. The brush rollers are driven by a motor via a gear box in order to remove dirt from a carpet and feed it into a suction channel.

CN 105 125 141 A offenbart eine Reinigungseinheit für einen Staubsauger, bei der an einem pneumatisch angetriebenen Laufrad 2 zwei Arbeitskörper angeordnet sind. Das Laufrad ist als Radialturbine ausgebildet. CN 105 125 141 A discloses a cleaning unit for a vacuum cleaner, in which two working bodies are arranged on a pneumatically driven impeller 2. The impeller is designed as a radial turbine.

EP 0 947 155 A2 offenbart eine rotierende Bürsteneinheit für einen Staubsauger. Der Motor ist derart angeordnet, dass er den Arbeitskörper, der als Walze ausgebildet ist, unmittelbar antreibt. Der Motor ist ebenfalls als Elektromotor ausgebildet. EP 0 947 155 A2 discloses a rotating brush unit for a vacuum cleaner. The motor is arranged in such a way that it rotates the working body, which is designed as a roller is designed to drive directly. The motor is also designed as an electric motor.

US 2002/129462 A1 offenbart einen Staubsauger mit einer Bodeneinheit, die eine Mehrzahl rotierender Bürsten aufweist. Die Bürsten der Bodeneinheit werden von einem Elektromotor angetrieben, der über ein Getriebe mit den Reinigungswalzen verbunden ist. US 2002/129462 A1 discloses a vacuum cleaner with a floor unit having a plurality of rotating brushes. The brushes of the floor unit are driven by an electric motor which is connected to the cleaning rollers via a gear.

DE 10 2014 114 813 A1 offenbart eine Flächen-Reinigungsmaschine und ein Verfahren zum Betreiben einer Flächenreinigungsmaschine. Die Flächenreinigungsmaschine weist zwei rotierbare Reinigungswalzen auf, die von einem Antriebselement antreibbar sind. Der Antriebsmotor ist orthogonal zur Rotationsachse der Reinigungswalzen in dem Gehäuse angeordnet und über eine Getriebeeinrichtung mit den Reinigungswalzen verbunden. DE 10 2014 114 813 A1 discloses a surface cleaning machine and a method for operating a surface cleaning machine. The surface cleaning machine has two rotatable cleaning rollers that can be driven by a drive element. The drive motor is arranged orthogonally to the axis of rotation of the cleaning rollers in the housing and is connected to the cleaning rollers via a gear device.

DE 102 42 257 A1 offenbart ein selbsttätig verfahrbares Bodenstaub-Aufsammelgerät sowie eine Kombination eines derartigen Aufsammelgerätes mit einer Basisstation. Das Aufsammelgerät weist an der Unterseite eine rotierende Bürste auf, die von einem Elektromotor antreibbar ist. DE 102 42 257 A1 discloses an automatically movable floor dust collector and a combination of such a collector with a base station. The collector has a rotating brush on the underside that can be driven by an electric motor.

Die aus dem Stand der Technik bekannten Reinigungseinheiten weisen den Nachteil auf, dass sie entweder eine gute Randabreinigung bei gleichzeitig leichtem Bürstenwechsel oder eine gute Energieeffizienz, insbesondere bei akkubetriebenen Geräten, gewährleisten.The cleaning units known from the state of the art have the disadvantage that they either ensure good edge cleaning while simultaneously making brush changes easy or good energy efficiency, especially in the case of battery-operated devices.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Reinigungseinheit für eine Vorrichtung zum Reinigen eines Untergrunds anzugeben, bei der sowohl eine gute Randabreinigung bei vereinfachtem Bürstenwechsel als auch gleichzeitig gesteigerte Energieeffizienz gewährleistet ist.The present invention is therefore based on the object of specifying a cleaning unit for a device for cleaning a substrate, in which both good edge cleaning with simplified brush changes and at the same time increased energy efficiency are ensured.

Die vorgenannte Aufgabe wird bei einer gattungsgemäßen Reinigungseinheit gelöst mit dem Merkmalsinhalt des Kennzeichnungsteils des Anspruchs 1, nämlich dadurch, dass mindestens ein zweiter Arbeitskörper vorhanden ist, und dass der zweite Arbeitskörper derart mit dem Motor verbindbar ist, dass der zweite Arbeitskörper von dem Motor direkt rotierbar ist, wobei der Motor als Elektromotor ausgebildet ist.The above-mentioned object is achieved in a generic cleaning unit with the feature content of the characterizing part of claim 1, namely in that at least one second working body is present, and that the second working body can be connected to the motor in such a way that the second working body can be rotated directly by the motor, wherein the motor is designed as an electric motor.

Saugdüsen für Staubsauger sind üblicherweise über einen flexiblen Saugschlauch und/oder ein Handhabungsrohr strömungsdicht mit dem Sauggerät verbunden. Bei so genannten Handstaubsaugern ist auch vorgesehen, dass die Saugdüse direkt strömungsdicht mit dem Sauggerät verbunden ist. An derartigen Saugdüsen ist üblicherweise mindestens ein rotierbarer Arbeitskörper angeordnet, der Schmutz vom Untergrund löst oder beispielsweise Schmutz aus einem Teppich herauslöst. Eine Saugdüse weist dazu insbesondere mindestens eine erfindungsgemäße Reinigungseinheit auf, die mindestens einen Motor sowie mindestens einen ersten Arbeitskörper und mindestens einen zweiten Arbeitskörper aufweist. Der erste Arbeitskörper und der zweite Arbeitskörper sind derart mit dem Motor verbunden, dass sowohl der erste Arbeitskörper als auch der zweite Arbeitskörper direkt von dem Motor rotierbar ist. "Direkt" bedeutet in diesem Zusammenhang, dass eine Rotation des Motors, ohne das Vorhandensein eines Getriebes, auf den ersten Arbeitskörper und den zweiten Arbeitskörper übertragen wird.Suction nozzles for vacuum cleaners are usually connected to the suction device in a flow-tight manner via a flexible suction hose and/or a handling tube. In the case of so-called handheld vacuum cleaners, it is also provided that the suction nozzle is directly connected to the suction device in a flow-tight manner. At least one rotatable working body is usually arranged on such suction nozzles, which loosens dirt from the surface or, for example, removes dirt from a carpet. For this purpose, a suction nozzle has in particular at least one cleaning unit according to the invention, which has at least one motor and at least one first working body and at least one second working body. The first working body and the second working body are connected to the motor in such a way that both the first working body and the second working body can be rotated directly by the motor. "Direct" in this context means that a rotation of the motor is transmitted to the first working body and the second working body without the presence of a gear.

Der erste Arbeitskörper und der zweite Arbeitskörper sind vorzugsweise beabstandet zueinander an der Reinigungseinheit angeordnet. Der erste Arbeitskörper und der zweite Arbeitskörper sind beispielsweise derart rotierbar an der Reinigungseinheit gehalten, dass die Rotationsachse oder die Rotationsachsen des ersten Arbeitskörpers und des zweiten Arbeitskörpers im Betriebszustand im Wesentlichen parallel zu einem zu bearbeitenden Untergrund ausgerichtet ist/sind. Die Reinigungseinheit ist im Montagezustand derart gehalten, dass der erste und der zweite Arbeitskörper im Betriebszustand einen zu bearbeitenden Untergrund zumindest teilweise berühren.The first working body and the second working body are preferably arranged at a distance from one another on the cleaning unit. The first working body and the second working body are, for example, held rotatably on the cleaning unit such that the axis of rotation or the axes of rotation of the first working body and the second working body are aligned substantially parallel to a surface to be treated in the operating state. The cleaning unit is held in the assembled state such that the first and the second working body at least partially touch a surface to be treated in the operating state.

Vorrichtungen zum Reinigen eines Untergrunds im Sinne der vorliegenden Erfindung, in denen eine Reinigungseinheit anordenbar ist, sind beispielsweise Saugdüsen, insbesondere Bodendüsen, für Staubsauger, Düsen für Handstaubsauger oder sich autonom in einer Reinigungsumgebung bewegende Reinigungsgeräte, beispielsweise Saugroboter oder Wischroboter oder Saug- /Wischroboter.Devices for cleaning a substrate in the sense of the present invention, in which a cleaning unit can be arranged, are for example Suction nozzles, in particular floor nozzles, for vacuum cleaners, nozzles for handheld vacuum cleaners or cleaning devices that move autonomously in a cleaning environment, for example vacuum robots or mop robots or vacuum/mop robots.

Die vorliegende Erfindung betrifft daher auch eine Bodendüse, eine Düse und/oder einen Reinigungsroboter, mit einer vorstehend oder nachstehend beschriebenen Reinigungseinheit.The present invention therefore also relates to a floor nozzle, a nozzle and/or a cleaning robot, with a cleaning unit described above or below.

Ein erfindungsgemäßer Direktantrieb von zwei Arbeitskörpern hat gegenüber einem Antrieb mit einem Getriebe den Vorteil, dass eine deutlich bessere Energieeffizienz und eine geringere Betriebsdrehzahl erforderlich ist. Die gesteigerte Energieeffizienz trägt zu einer längeren Akkulaufzeit bei akkubetriebenen Geräten bei, die geringere Betriebsdrehzahl zu besseren akustischen Eigenschaften. Die Verwendung von zwei Arbeitskörpern erleichtert den Austausch und verbessert die Reinigungsleistung in Randbereichen.A direct drive of two working bodies according to the invention has the advantage over a drive with a gear that significantly better energy efficiency and a lower operating speed are required. The increased energy efficiency contributes to a longer battery life for battery-operated devices, and the lower operating speed leads to better acoustic properties. The use of two working bodies makes replacement easier and improves cleaning performance in peripheral areas.

Gemäß einer ersten Ausgestaltung der erfindungsgemäßen Reinigungseinheit hat sich als vorteilhaft herausgestellt, wenn vorgesehen ist, dass der erste Arbeitskörper und/oder der zweite Arbeitskörper als Reinigungswerkzeug ausgebildet ist/sind. Beispielsweise sind der erste Arbeitskörper und/oder der zweite Arbeitskörper als Reinigungsbürste, insbesondere als Bürstenwalze, ausgebildet. An einer Reinigungsbürste sind beispielsweise eine Vielzahl daran befestigter Filamente, beispielsweise Borsten, angeordnet. Diese Filamente können in Form von einzelnen angeordneten Büscheln oder in Form von Bürstenleisten oder wellenförmig angeordneten Bürstenleisten angeordnet sein.According to a first embodiment of the cleaning unit according to the invention, it has been found to be advantageous if the first working body and/or the second working body is/are designed as a cleaning tool. For example, the first working body and/or the second working body are designed as a cleaning brush, in particular as a brush roller. A cleaning brush, for example, has a large number of filaments, such as bristles, attached to it. These filaments can be arranged in the form of individually arranged tufts or in the form of brush strips or brush strips arranged in a wave shape.

Ferner ist auch vorgesehen, dass eine Reinigungswalze eine Mehrzahl von Reinigungsvorsprüngen oder Reinigungslamellen aufweist. Beispielsweise ist der erste Arbeitskörper oder der zweite Arbeitskörper zumindest teilweise, z. B. zumindest Reinigungsvorsprünge oder Reinigungslamellen, aus Silikon ausgebildet.Furthermore, it is also provided that a cleaning roller has a plurality of cleaning projections or cleaning lamellae. For example, the first working body or the second working body is at least partially made of silicone, e.g. at least cleaning projections or cleaning lamellae.

Insbesondere um den direkten Antrieb des ersten Arbeitskörpers und/oder des zweiten Arbeitskörpers durch den Motor vorteilhaft zu ermöglichen, ist gemäß einer weiteren Ausgestaltung der Reinigungseinheit vorgesehen, dass der erste Arbeitskörper und/oder der zweite Arbeitskörper mit mindestens einem Rotor des Motors direkt verbindbar ist. Beispielsweise wird der erste Arbeitskörper mit einem ersten Rotor des Motors und der zweite Arbeitskörper mit einem zweiten Rotor des Motors verbunden. Die Verbindung zwischen den Arbeitskörpern und dem jeweiligen Rotor ist beispielsweise formschlüssig und/oder kraftschlüssig und/oder kraftformschlüssig. Beispielsweise ist der erste Rotor um eine Motorachse rotierbar an einer ersten Stirnseite des Motors und der zweite Rotor um die Motorachse rotierbar an einer zweiten Stirnseite des Motors gehalten. Der erste Arbeitskörper ist mit dem ersten Rotor und der zweite Arbeitskörper mit dem zweiten Rotor verbunden.In particular, in order to advantageously enable the direct drive of the first working body and/or the second working body by the motor, a further embodiment of the cleaning unit provides that the first working body and/or the second working body can be directly connected to at least one rotor of the motor. For example, the first working body is connected to a first rotor of the motor and the second working body is connected to a second rotor of the motor. The connection between the working bodies and the respective rotor is, for example, form-fitting and/or force-fitting and/or force-form-fitting. For example, the first rotor is held on a first end face of the motor so as to be rotatable about a motor axis and the second rotor is held on a second end face of the motor so as to be rotatable about the motor axis. The first working body is connected to the first rotor and the second working body is connected to the second rotor.

Alternativ oder zusätzlich dazu ist vorgesehen, dass der Motor mindestens eine Welle aufweist, und dass der erste Arbeitskörper und/oder der zweite Arbeitskörper, vorzugsweise unmittelbar, mit der Welle verbindbar ist. Die Welle ist vorzugsweise mit dem mindestens einen Rotor verbunden. Die Verbindung zwischen dem ersten Arbeitskörper oder dem zweiten Arbeitskörper und der Welle ist beispielsweise formschlüssig und/oder kraftschlüssig und/oder kraftformschlüssig ausgebildet. Beispielsweise weist die Welle mindestens einen Vorsprung oder eine Geometrie auf, mittels derer ein Drehmoment auf den ersten Arbeitskörper und/oder den zweiten Arbeitskörper übertragbar ist.Alternatively or additionally, it is provided that the motor has at least one shaft and that the first working body and/or the second working body can be connected to the shaft, preferably directly. The shaft is preferably connected to the at least one rotor. The connection between the first working body or the second working body and the shaft is, for example, designed to be positively locking and/or force-locking and/or force-form-locking. For example, the shaft has at least one projection or geometry by means of which a torque can be transmitted to the first working body and/or the second working body.

Der erste Arbeitskörper und/oder der zweite Arbeitskörper sind jedenfalls derart mit dem Rotor des Motors und/oder mit der Welle verbunden, dass ein Drehmoment übertragbar ist, also der erste Arbeitskörper und/oder der zweite Arbeitskörper durch den Motor direkt rotierbar sind.The first working body and/or the second working body are in any case connected to the rotor of the motor and/or to the shaft in such a way that a torque can be transmitted, i.e. the first working body and/or the second working body can be rotated directly by the motor.

Besonders bevorzugt ist gemäß einer weiteren Ausgestaltung der Reinigungseinheit vorgesehen, dass der erste Arbeitskörper und/oder der zweite Arbeitskörper lösbar mit der Welle und/oder lösbar mit dem mindestens einen Rotor des Motors verbindbar ist. Die Lösbarkeit der Verbindung zwischen dem ersten Arbeitskörper bzw. dem zweiten Arbeitskörper und dem Rotor und/oder der Welle gewährleistet eine Austauschbarkeit des ersten Arbeitskörpers und/oder des zweiten Arbeitskörpers, um für unterschiedliche Reinigungsaufgaben unterschiedliche Arbeitskörper zu verwenden oder einen verschlissenen Arbeitskörper zu ersetzen.According to a further embodiment of the cleaning unit, it is particularly preferred that the first working body and/or the second working body can be detachably connected to the shaft and/or detachably to the at least one rotor of the motor. The detachability of the connection between the first working body or the second working body and the rotor and/or the shaft ensures interchangeability of the first working body and/or the second working body in order to use different working bodies for different cleaning tasks or to replace a worn working body.

Beispielsweise weist ein erster Rotor des Motors und/oder ein zweiter Rotor des Motors mindestens eine Wellenschnittstelle auf, um mit einer ersten Welle bzw. einer zweiten Welle gekoppelt zu werden. Die erste Welle ist beispielsweise ein Teil des ersten Arbeitskörpers und die zweite Welle ein Teil des zweiten Arbeitskörpers, wobei der erste Arbeitskörper und/oder der zweite Arbeitskörper über die Wellenschnittstelle an den jeweiligen Rotor ankoppelbar ist. Die Wellenschnittstelle ist derart ausgebildet, dass eine Rotation des Rotors auf die erste Welle bzw. die zweite Welle übertragbar ist. Beispielsweise sind die erste Welle und die zweite Welle an der Reinigungseinheit und/oder der Vorrichtung zur Reinigung gelagert.For example, a first rotor of the motor and/or a second rotor of the motor has at least one shaft interface in order to be coupled to a first shaft or a second shaft. The first shaft is, for example, part of the first working body and the second shaft part of the second working body, wherein the first working body and/or the second working body can be coupled to the respective rotor via the shaft interface. The shaft interface is designed in such a way that a rotation of the rotor can be transferred to the first shaft or the second shaft. For example, the first shaft and the second shaft are mounted on the cleaning unit and/or the cleaning device.

Eine weitere Ausgestaltung der Reinigungseinheit sieht vor, dass eine einzige Welle mit einem Rotor des Motors, insbesondere mit einem ersten und einem zweiten Rotor des Motors, drehfest verbunden ist. Beispielsweise ist die Welle formschlüssig, stoffschlüssig und/oder kraftschlüssig mit einem Rotor bzw. den Rotoren verbunden. Vorteilhaft ist vorgesehen, dass die Welle mindestens einen Vorsprung aufweist, der mit mindestens einem Rotor bzw. jeweils einem der Rotoren des Motors formschlüssig zusammenwirkt. Die Welle ist mit mindestens einem Rotor, vorzugsweise mit beiden Rotoren derart verbunden, dass ein Drehmoment von den Rotoren auf die Welle übertragbar ist.A further embodiment of the cleaning unit provides that a single shaft is connected in a rotationally fixed manner to a rotor of the motor, in particular to a first and a second rotor of the motor. For example, the shaft is connected to a rotor or rotors in a form-fitting, material-fitting and/or force-fitting manner. It is advantageously provided that the shaft has at least one projection that interacts in a form-fitting manner with at least one rotor or one of the rotors of the motor. The shaft is connected to at least one rotor, preferably to both rotors, in such a way that a torque can be transmitted from the rotors to the shaft.

Der erste Arbeitskörper und der zweite Arbeitskörper lassen sich besonders vorteilhaft austauschen, wenn gemäß einer weiteren Ausgestaltung der Reinigungseinheit vorgesehen ist, dass eine einzige Welle vorhanden ist und dass die Welle ein erstes freies Ende und ein zweites freies Ende aufweist. Vorzugsweise ist der erste Arbeitskörper auf dem ersten freien Ende und der zweite Arbeitskörper auf dem zweiten freien Ende anordenbar. Die freien Enden stehen vorzugsweise jeweils aus dem ersten Rotor bzw. dem zweiten Rotor hervor, so dass der erste Arbeitskörper bzw. der zweite Arbeitskörper auf einfache Weise aufsteckbar sind. Vorzugsweise wird der erste Arbeitskörper auf dem ersten freien Ende verrastet und der zweite Arbeitskörper auf dem zweiten freien Ende verrastet.The first working body and the second working body can be exchanged particularly advantageously if, according to a further embodiment of the cleaning unit, there is a single shaft and the shaft has a first free end and a second free end. Preferably, the first working body can be arranged on the first free end and the second working body on the second free end. The free ends preferably protrude from the first rotor and the second rotor, respectively, so that the first The working body or the second working body can be easily plugged on. Preferably, the first working body is locked onto the first free end and the second working body is locked onto the second free end.

Gemäß einer weiteren Ausgestaltung der Reinigungseinheit ist vorgesehen, dass der Motor, insbesondere entlang der Welle, vorzugsweise mittig, zwischen dem ersten Arbeitskörper und dem zweiten Arbeitskörper angeordnet ist. Die Welle durchtritt den Motor vorzugsweise derart, dass sie auf beiden Seiten des Motors aus dem Motor hervorsteht und jeweils eine gleiche Länge aufweist. Dadurch werden die freien Enden der Welle gebildet, auf die der erste Arbeitskörper und der zweite Arbeitskörper aufbringbar sind. Vorzugsweise ist die Welle innerhalb des Motors gelagert.According to a further embodiment of the cleaning unit, it is provided that the motor is arranged, in particular along the shaft, preferably centrally, between the first working body and the second working body. The shaft preferably passes through the motor in such a way that it protrudes from the motor on both sides of the motor and has the same length in each case. This forms the free ends of the shaft onto which the first working body and the second working body can be attached. The shaft is preferably mounted within the motor.

Vorzugsweise ist gemäß einer weiteren Ausgestaltung vorgesehen, dass der erste Arbeitskörper und der zweite Arbeitskörper koaxial auf einer einzigen Welle angeordnet sind. Der erste Arbeitskörper und der zweite Arbeitskörper drehen folglich gemeinsam auf der Welle. Die Welle ist vorzugsweise derart an dem Reinigungsgerät angeordnet, dass eine Rotation des ersten Arbeitskörpers und des zweiten Arbeitskörpers im Wesentlichen parallel zu einem zu reinigenden Untergrund erfolgt.Preferably, according to a further embodiment, the first working body and the second working body are arranged coaxially on a single shaft. The first working body and the second working body therefore rotate together on the shaft. The shaft is preferably arranged on the cleaning device in such a way that the first working body and the second working body rotate essentially parallel to a surface to be cleaned.

In Bezug auf die Lagerung der Welle hat es sich als vorteilhaft herausgestellt, wenn vorgesehen ist, dass die Welle mit mindestens einem Lager, insbesondere mit mindestens zwei Lagern, gelagert ist. Vorzugsweise ist vorgesehen, dass die Welle in einem Stator des Motors gelagert ist, nämlich indem die Welle beidseitig aus dem Motor herausragt. In dem Stator sind vorzugsweise zwei zueinander beabstandet angeordnete Lager, insbesondere Gleitlager oder Kugellager, vorgesehen, die die Welle abstützen. Die Welle ist vorzugsweise aus einem korrosionsfesten Stahl ausgebildet.With regard to the bearing of the shaft, it has proven to be advantageous if the shaft is supported by at least one bearing, in particular by at least two bearings. Preferably, the shaft is supported in a stator of the motor, namely by the shaft protruding from the motor on both sides. Preferably, two bearings, in particular plain bearings or ball bearings, arranged at a distance from one another are provided in the stator, which support the shaft. The shaft is preferably made of a corrosion-resistant steel.

Insbesondere um eine Bewegbarkeit des ersten Arbeitskörpers und des zweiten Arbeitskörpers gegenüber dem Untergrund zu ermöglichen, ist vorgesehen, dass der Motor, insbesondere der Stator des Motors, an einer Schwinge gehalten ist. Die Schwinge hält den Motor und auch die beiden Arbeitskörper, so dass bei einer Bewegung der Schwinge die Arbeitskörper und der Motor bewegt werden. Vorzugsweise ist die Schwinge federnd gelagert, so dass im Montagezustand eine Federkraft in Richtung eines zu reinigenden Untergrundes bewirkt wird. Hebt ein Nutzer die Vorrichtung mit der Reinigungseinheit an, führen die Gewichtskraft des Motors sowie der Arbeitskörper und die Federkraft dazu, dass die Reinigungseinheit etwas in Richtung des Untergrundes bewegt wird. Zur Montage ist die Reinigungseinheit vorzugsweise mit der Schwinge an einer Vorrichtung zur Reinigung befestigbar.In particular, in order to enable the first working body and the second working body to be movable relative to the ground, it is provided that the Motor, in particular the stator of the motor, is held on a swing arm. The swing arm holds the motor and also the two working bodies, so that when the swing arm moves, the working bodies and the motor are moved. The swing arm is preferably spring-mounted, so that when assembled, a spring force is exerted in the direction of a surface to be cleaned. If a user lifts the device with the cleaning unit, the weight of the motor as well as the working body and the spring force cause the cleaning unit to be moved slightly in the direction of the surface. For assembly, the cleaning unit can preferably be attached to a cleaning device with the swing arm.

Die Schwinge ist vorzugsweise derart ausgebildet, dass sie zumindest den Stator des Motors vollständig umgreift. Der Motor ist insbesondere derart an der Schwinge gehalten, dass die in dem Motor gelagerte Welle rechts und links aus der Schwinge hervortritt. Die Arbeitskörper sind folglich rechts und links der Schwinge angeordnet. Die Schwinge ist mittig zwischen dem ersten Arbeitskörper und dem zweiten Arbeitskörper angeordnet.The swing arm is preferably designed in such a way that it completely encompasses at least the stator of the motor. The motor is in particular held on the swing arm in such a way that the shaft mounted in the motor protrudes from the swing arm on the right and left. The working bodies are therefore arranged on the right and left of the swing arm. The swing arm is arranged centrally between the first working body and the second working body.

Eine weitere Ausgestaltung der Reinigungseinheit sieht vor, dass der Motor beispielsweise als, insbesondere permanenterregte, Axialflussmaschine oder als Radialflussmaschine ausgebildet ist. Durch die Axialflussmaschine kann eine kompakte Bauform gewährleistet werden. An jeder Stirnseite der Axialflussmaschine kann ein Rotor angeordnet sein, so dass jedem Arbeitskörper ein Rotor zugeordnet ist. Eine Radialflussmaschine ist beispielsweise als Innenläufer oder Außenläufer ausgebildet.A further embodiment of the cleaning unit provides that the motor is designed, for example, as an axial flux machine, in particular a permanent magnet machine, or as a radial flux machine. The axial flux machine can ensure a compact design. A rotor can be arranged on each end face of the axial flux machine, so that each working body is assigned a rotor. A radial flux machine is designed, for example, as an internal rotor or external rotor.

Gemäß einer weiteren Ausgestaltung der Reinigungseinheit ist vorgesehen, dass mindestens ein Rotor des Motors, vorzugsweise beide Rotoren des Motors, jeweils mindestens einen Permanentmagneten oder jeweils mindestens eine Spule aufweisen. Vorzugsweise weist jeder Rotor mindestens zwei, drei oder vier Permanentmagnete auf, die beabstandet zueinander über den Umfang verteilt sind. Eine weitere Ausgestaltung der Reinigungseinheit sieht vor, dass der Stator des Motors ein- oder zweiteilig ausgebildet ist. Vorzugsweise ist vorgesehen, dass der Stator axial mittig geteilt ist. In Abhängigkeit von der Konstruktion der Reinigungseinheit ist auch vorgesehen, dass der Stator einstückig ausgebildet ist, beispielsweise zumindest teilweise aus gesintertem Metallpulver oder aus Elektroblech.According to a further embodiment of the cleaning unit, it is provided that at least one rotor of the motor, preferably both rotors of the motor, each have at least one permanent magnet or at least one coil. Preferably, each rotor has at least two, three or four permanent magnets, which are distributed at a distance from one another over the circumference. A further embodiment of the cleaning unit provides that the stator of the motor is designed in one or two parts. It is preferably provided that the stator is split axially in the middle. Depending on the design of the cleaning unit, it is also provided that the stator is designed in one piece, for example at least partially from sintered metal powder or from electrical sheet.

Die Erfindung betrifft ferner ein Reinigungsgerät, insbesondere einen Saug- und/oder Wischroboter, mit mindestens einer Reinigungseinheit nach einem der vorbeschriebenen Ausführungsbeispiele.The invention further relates to a cleaning device, in particular a vacuum and/or wiping robot, with at least one cleaning unit according to one of the above-described embodiments.

Zudem betrifft die Erfindung eine Saugdüse für einen Staubsauger, insbesondere eine Bodendüse, aufweisend mindestens eine Reinigungseinheit nach einem der vorbeschriebenen Ausführungsbeispiele.In addition, the invention relates to a suction nozzle for a vacuum cleaner, in particular a floor nozzle, comprising at least one cleaning unit according to one of the previously described embodiments.

Außerdem betrifft die Erfindung die Verwendung einer Reinigungseinheit, vorzugsweise nach einem der vorstehend oder nachstehend beschriebenen Ausführungsbeispiele, mit mindestens einem Motor, mindestens einem ersten Arbeitskörper und mindestens einem zweiten Arbeitskörper, wobei der Motor als Elektromotor ausgebildet ist, wobei der erste Arbeitskörper und der zweite Arbeitskörper direkt von dem Motor rotierbar sind, wobei der Motor mittig zwischen dem ersten Arbeitskörper und dem zweiten Arbeitskörper angeordnet ist, zur Anordnung in einem Reinigungsgerät, insbesondere einem Reinigungsroboter oder einer Bodendüse, für die Reinigung eines Untergrundes.Furthermore, the invention relates to the use of a cleaning unit, preferably according to one of the embodiments described above or below, with at least one motor, at least one first working body and at least one second working body, wherein the motor is designed as an electric motor, wherein the first working body and the second working body are directly rotatable by the motor, wherein the motor is arranged centrally between the first working body and the second working body, for arrangement in a cleaning device, in particular a cleaning robot or a floor nozzle, for cleaning a surface.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus der folgenden Figurenbeschreibung und den abhängigen Unteransprüchen.Further advantageous embodiments of the invention emerge from the following description of the figures and the dependent subclaims.

Es zeigen:

Fig. 1
zeigt ein Ausführungsbeispiel einer Reinigungseinheit in einer Saugdüse,
Fig. 2
zeigt ein weiteres Ausführungsbeispiel einer Reinigungseinheit in einer Saugdüse,
Fig. 3
zeigt ein Ausführungsbeispiel einer Reinigungseinheit in einem Saugroboter, und
Fig. 4
zeigt ein Ausführungsbeispiel eines Motors für eine Reinigungseinheit.
They show:
Fig. 1
shows an embodiment of a cleaning unit in a suction nozzle,
Fig. 2
shows another embodiment of a cleaning unit in a suction nozzle,
Fig. 3
shows an embodiment of a cleaning unit in a vacuum robot, and
Fig. 4
shows an embodiment of a motor for a cleaning unit.

In den verschiedenen Figuren der Zeichnung sind gleiche Teile stets mit denselben Bezugszeichen versehen.In the various figures of the drawing, identical parts are always provided with the same reference symbols.

Zu der anschließenden Beschreibung wird beansprucht, dass die Erfindung nicht auf die Ausführungsbeispiele und dabei nicht auf alle oder mehrere Merkmale von beschriebenen Merkmalskombinationen beschränkt ist, vielmehr ist jedes einzelne Teilmerkmal des/jedes Ausführungsbeispiels auch losgelöst von allen anderen im Zusammenhang damit beschriebenen Teilmerkmalen für sich und auch in Kombination mit beliebigen Merkmalen eines anderen Ausführungsbeispiels von Bedeutung für den Gegenstand der Erfindung.With regard to the following description, it is claimed that the invention is not limited to the embodiments and thereby not to all or several features of described feature combinations, but rather each individual partial feature of the/each embodiment is also detached from all other partial features described in connection with it, both on its own and in combination with any features of another embodiment, of importance for the subject matter of the invention.

Fig. 1 zeigt ein Ausführungsbeispiel einer Reinigungseinheit 1 in einer Vorrichtung 2 zum Reinigen eines Untergrundes, die hier als Saugdüse, insbesondere Bodendüse, für einen Staubsauger - nicht dargestellt - ausgebildet ist. Die Reinigungseinheit 1 weist einen Motor 3, einen ersten Arbeitskörper 4 sowie einen zweiten Arbeitskörper 5 auf. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind bei diesem Ausführungsbeispiel als walzenförmige Reinigungsbürsten mit Borsten 6 ausgebildet. Der Motor 3 weist einen Stator 7 und zwei an den Stirnseiten des Stators 7 angeordnete Rotoren 8 auf. Fig. 1 shows an embodiment of a cleaning unit 1 in a device 2 for cleaning a surface, which is designed here as a suction nozzle, in particular a floor nozzle, for a vacuum cleaner - not shown. The cleaning unit 1 has a motor 3, a first working body 4 and a second working body 5. The first working body 4 and the second working body 5 are designed in this embodiment as roller-shaped cleaning brushes with bristles 6. The motor 3 has a stator 7 and two rotors 8 arranged on the front sides of the stator 7.

Der Motor 3 weist ferner eine Welle 9 auf, die sich zentral durch den Motor 3 hindurch erstreckt, so dass sie beidseitig aus dem Motor 3 heraustritt. Die Welle 9 hat dadurch ein erstes freies Ende 9a sowie ein zweites freies Ende 9b. Das erste freie Ende 9a ist mit dem ersten Arbeitskörper 4 und das zweite freie Ende 9b mit dem zweiten Arbeitskörper 5 verbunden, indem die Arbeitskörper 4, 5 auf die freien Enden 9a, 9b aufgesteckt sind. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind mit dem jeweiligen Rotor 8 und der Welle 9 lösbar verbunden, so dass der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 austauschbar sind.The motor 3 further comprises a shaft 9 which extends centrally through the motor 3 so that it emerges from the motor 3 on both sides. The shaft 9 thus has a first free end 9a and a second free end 9b. The first free end 9a is connected to the first working body 4 and the second free end 9b is connected to the second working body 5 by the working bodies 4, 5 being plugged onto the free ends 9a, 9b. The first working body 4 and the second working body 5 are detachably connected to the respective rotor 8 and the shaft 9, so that the first working body 4 and the second working body 5 are interchangeable.

Die Welle 9 ist drehfest mit den beiden Rotoren 8 verbunden, so dass die Welle 9 bei einer Bewegung der Rotoren 8 stets mit gleicher Drehzahl rotiert. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind koaxial und beabstandet zueinander auf der Welle 9 angeordnet. Der Motor 3 ist entlang der Welle 9 mittig zwischen dem ersten Arbeitskörper 4 und dem zweiten Arbeitskörper 5 angeordnet.The shaft 9 is connected to the two rotors 8 in a rotationally fixed manner, so that the shaft 9 always rotates at the same speed when the rotors 8 move. The first working body 4 and the second working body 5 are arranged coaxially and at a distance from one another on the shaft 9. The motor 3 is arranged along the shaft 9 centrally between the first working body 4 and the second working body 5.

Die Welle 9 ist mit zwei Lagern 10, die bei diesem Ausführungsbeispiel als Kugellager ausgebildet sind, in dem Stator 7 des Motors 3 gelagert. Der Stator 7 weist zur Anordnung der Lager 10 und zum Durchtritt der Welle 9 eine zentrale Ausnehmung 11 auf. Der Motor 3, insbesondere der Stator 7 des Motors 3, ist in einer federnd gelagerten Schwinge 12 gehalten. Die Reinigungseinheit 1 ist mit der federnd gelagerte Schwinge 12 an der Bodendüse 2 montiert. Die federnd gelagerte Schwinge 12 ermöglicht ein Ausweichen der Reinigungseinheit 1 gegenüber einem zu reinigenden Untergrund. Die Schwinge 12 umgreift den Stator 7 des Motors 3 vollumfänglich. Der Stator 7 des Motors 3 weist acht Spulen 13 auf, die mit einem Strom beaufschlagbar sind. Die Rotoren 8 weisen jeweils vier über den Umfang der Rotoren 8 verteilte Permanentmagneten 14 auf.The shaft 9 is mounted in the stator 7 of the motor 3 with two bearings 10, which in this embodiment are designed as ball bearings. The stator 7 has a central recess 11 for the arrangement of the bearings 10 and for the passage of the shaft 9. The motor 3, in particular the stator 7 of the motor 3, is held in a spring-mounted swing arm 12. The cleaning unit 1 is mounted on the floor nozzle 2 with the spring-mounted swing arm 12. The spring-mounted swing arm 12 enables the cleaning unit 1 to avoid a surface to be cleaned. The swing arm 12 completely surrounds the stator 7 of the motor 3. The stator 7 of the motor 3 has eight coils 13 to which a current can be applied. The rotors 8 each have four permanent magnets 14 distributed over the circumference of the rotors 8.

Fig. 2 zeigt ein weiteres Ausführungsbeispiel einer Reinigungseinheit 1 für eine Vorrichtung 2 zum Reinigen eines Untergrunds. Die Vorrichtung 2 ist bei diesem Ausführungsbeispiel als Saugdüse, insbesondere Bodendüse, für einen Staubsauger - nicht dargestellt - ausgebildet. Die Vorrichtung 2 weist erste Rollen 15 und zweite Rollen 16 zur Führung auf einem - nicht dargestellten - Untergrund auf. Zudem weist die Vorrichtung 2 eine Schnittstelle 17 zu einem Staubsaugersaugrohr - nicht dargestellt - zur Abfuhr der Saugluft auf. Fig. 2 shows a further embodiment of a cleaning unit 1 for a device 2 for cleaning a surface. In this embodiment, the device 2 is designed as a suction nozzle, in particular a floor nozzle, for a vacuum cleaner - not shown. The device 2 has first rollers 15 and second rollers 16 for guiding on a surface - not shown. In addition, the device 2 has an interface 17 to a vacuum cleaner suction pipe - not shown - for removing the suction air.

Die Reinigungseinheit 1 ist in einem Saugraum 18 angeordnet. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind an einer Welle 9 rotierbar gehalten. Die Welle 9 tritt beidseitig aus dem in einer Schwinge 12 gelagerten Motor 3 hervor. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind als Bürstenwalzen mit Lamellen ausgebildet. Die Borsten 6 sind hier wellenartig angeordnet. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind lösbar auf einem ersten freien Ende 9a und einem zweiten freien Ende 9b der Welle 9 gehalten.The cleaning unit 1 is arranged in a suction chamber 18. The first working body 4 and the second working body 5 are held rotatably on a shaft 9. The shaft 9 protrudes on both sides from the motor 3 mounted in a rocker 12. The first working body 4 and the second working body 5 are designed as brush rollers with lamellae. The bristles 6 are arranged in a wave-like manner here. The first working body 4 and the second working body 5 are detachably held on a first free end 9a and a second free end 9b of the shaft 9.

Die Reinigungseinheit 1 ist von dem Saugraum 18 umgeben, aus dem der von den Arbeitskörpern 4, 5 gelöste Schmutz entlang des Pfades 18a abgesaugt und an der Schnittstelle 17 an ein - nicht dargestelltes - Staubsaugersaugrohr übergeben wird. Die Schwinge 12 ist an einer Schwingenwelle 19 federnd gelagert, indem eine Federeinheit 20 auf die Schwingenwelle 19 wirkt. Die Federeinheit 20 gewährleistet einen ausreichenden Anpressdruck der Reinigungseinheit 1 auf einen zu reinigenden Untergrund sowie ein Ausweichen der Arbeitskörper 4,5 gegenüber dem Untergrund.The cleaning unit 1 is surrounded by the suction chamber 18, from which the dirt loosened by the working bodies 4, 5 is sucked along the path 18a and transferred to a vacuum cleaner suction pipe (not shown) at the interface 17. The rocker 12 is spring-mounted on a rocker shaft 19, with a spring unit 20 acting on the rocker shaft 19. The spring unit 20 ensures that the cleaning unit 1 has sufficient contact pressure on the surface to be cleaned and that the working bodies 4, 5 move away from the surface.

Fig. 3 zeigt ein Ausführungsbeispiel einer Reinigungseinheit 1 in einer Vorrichtung 2, die bei diesem Ausführungsbeispiel als ein sich in einer Reinigungsumgebung autonom bewegender Reinigungsroboter, hier Saugroboter, ausgebildet ist. Die Vorrichtung 2 weist erste Rollen 15 und zweite Rollen 16 zur Bewegung auf einem - nicht dargestellten - Untergrund auf. Die ersten Rollen 15 sind angetrieben. Fig. 3 shows an embodiment of a cleaning unit 1 in a device 2, which in this embodiment is designed as a cleaning robot, here a vacuum robot, that moves autonomously in a cleaning environment. The device 2 has first rollers 15 and second rollers 16 for movement on a surface (not shown). The first rollers 15 are driven.

Die Reinigungseinheit 1 ist in einem Saugraum 18 angeordnet. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind an einer Welle 9 rotierbar gehalten. Die Welle 9 tritt beidseitig aus dem in einer Schwinge 12 gelagerten Motor 3 hervor. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind als Bürstenwalzen mit Lamellen ausgebildet. Die Borsten 6 sind hier wellenartig angeordnet. Der erste Arbeitskörper 4 und der zweite Arbeitskörper 5 sind lösbar auf einem ersten freien Ende 9a und einem zweiten freien Ende 9b der Welle 9 gehalten.The cleaning unit 1 is arranged in a suction chamber 18. The first working body 4 and the second working body 5 are held rotatably on a shaft 9. The shaft 9 protrudes on both sides from the motor 3 mounted in a rocker 12. The first working body 4 and the second working body 5 are designed as brush rollers with lamellae. The bristles 6 are arranged in a wave-like manner here. The first working body 4 and the second working body 5 are detachably held on a first free end 9a and a second free end 9b of the shaft 9.

Die Reinigungseinheit 1 ist von dem Saugraum 18 umgeben, aus dem der von den Arbeitskörpern 4, 5 gelöste Schmutz entlang des Pfades 18a abgesaugt und in einem in dem Gehäuse 22 der Vorrichtung angeordneten Schmutzsammelbehälter aufgenommen wird. Die Schwinge 12 ist an einer Schwingenwelle 19 federnd gelagert, indem eine Federeinheit 20 auf die Schwingenwelle 19 wirkt. Die Federeinheit 20 gewährleistet einen ausreichenden Anpressdruck der Reinigungseinheit 1 auf einen zu reinigenden Untergrund sowie ein Ausweichen der Arbeitskörper 4,5 gegenüber dem Untergrund.The cleaning unit 1 is surrounded by the suction chamber 18, from which the dirt released by the working bodies 4, 5 is sucked along the path 18a and collected in a dirt collection container arranged in the housing 22 of the device. The rocker 12 is spring-mounted on a rocker shaft 19, in which a spring unit 20 acts on the rocker shaft 19. The spring unit 20 ensures sufficient contact pressure of the cleaning unit 1 on a surface to be cleaned and that the working bodies 4, 5 move away from the surface.

Fig. 4 zeigt ein Ausführungsbeispiel eines Motors 3 für eine Reinigungseinheit 1, beispielsweise nach einem der Ausführungsbeispiele gemäß Fig. 1 bis Fig. 3. Der Motor 3 weist einen Stator 7 mit insgesamt acht Spulen 13 auf, die jeweils um einen Spulenkern 13a gewickelt sind. Bei dem dargestellten Motor 3 handelt es sich um eine permanenterregte Axialflussmaschine, bei der die Rotoren 8 stirnseitig an dem Stator 7 angeordnet sind. Die beiden Rotoren 8 weisen jeweils vier Permanentmagnete 14 auf, die als bogenförmige Segmente über den Umfang der Rotoren 8 verteilt sind. Eine Welle 9 - siehe Fig. 1 bis Fig. 3 - ist in einer zentralen Ausnehmung 11 in dem Stator 7 lagerbar und in Ausnehmungen 21 mit den Rotoren 8 verbindbar. Fig. 4 shows an embodiment of a motor 3 for a cleaning unit 1, for example according to one of the embodiments according to Fig. 1 to Fig. 3 . The motor 3 has a stator 7 with a total of eight coils 13, each wound around a coil core 13a. The motor 3 shown is a permanent-magnet axial flux machine, in which the rotors 8 are arranged on the front side of the stator 7. The two rotors 8 each have four permanent magnets 14, which are distributed as arc-shaped segments over the circumference of the rotors 8. A shaft 9 - see Fig. 1 to Fig. 3 - can be stored in a central recess 11 in the stator 7 and can be connected to the rotors 8 in recesses 21.

Die Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt, sondern umfasst auch alle im Sinne der Erfindung gleichwirkenden Ausführungen. Es wird ausdrücklich betont, dass die Ausführungsbeispiele nicht auf alle Merkmale in Kombination beschränkt sind, vielmehr kann jedes einzelne Teilmerkmal auch losgelöst von allen anderen Teilmerkmalen für sich eine erfinderische Bedeutung haben.The invention is not limited to the embodiments shown and described, but also includes all embodiments that have the same effect within the meaning of the invention. It is expressly emphasized that the embodiments are not limited to all features in combination; rather, each individual partial feature can also have an inventive significance in itself, separated from all other partial features.

Bezugszeichenlistelist of reference symbols

11
Reinigungseinheitcleaning unit
22
Vorrichtung (Bodendüse?)device (floor nozzle?)
33
MotorMotor
44
erster Arbeitskörperfirst working body
55
zweiter Arbeitskörpersecond working body
66
Borstenbristles
77
Statorstator
88
Rotorrotor
99
WelleWave
1010
Lagercamp
1111
zentrale Ausnehmungcentral recess
1212
Schwingeswingarm
1313
SpulenWash
1414
Permanentmagnetenpermanent magnets
1515
erste Rollenfirst roles
1616
zweite Rollensecond roles
1717
Schnittstelleinterface
1818
Saugraumsuction chamber
18a18a
Pfadpath
1919
Schwingenwelleswingarm shaft
2020
Federeinheitspring unit
2121
Ausnehmungenrecesses
2222
GehäuseHousing

Claims (15)

  1. Cleaning unit (1) for a device (2) for cleaning a surface, comprising at least one motor (3) and at least one first working body (4), wherein the first working body (4) can be connected to the motor (3) in such a way that the first working body (4) can be directly rotated by the motor (3), wherein the motor (3) is designed as an electric motor,
    characterized in that
    at least one second working body (5) is present, and in that the second working body (5) can be connected to the motor (3) in such a way that the second working body (5) can be directly rotated by the motor (3).
  2. Cleaning unit (1) according to claim 1,
    characterized in that
    the first working body (4) and/or the second working body (5) is designed as a cleaning tool, in particular as a cleaning brush or a cleaning roller.
  3. Cleaning unit (1) according to claim 1 or 2,
    characterized in that
    the first working body (4) and/or the second working body (5) can be connected to the at least one rotor (8) of the motor (3).
  4. Cleaning unit (1) according to any one of claims 1 to 3,
    characterized in that
    the motor (3) has at least one shaft (9) connected to the at least one rotor (8), and in that the first working body (4) and/or the second working body (5) can be connected to the shaft (9), in particular can be connected in a form-fit and/or force-fit and/or force-form-fit manner.
  5. Cleaning unit (1) according to claim 3 or 4,
    characterized in that
    the first working body (4) and/or the second working body (5) can be detachably connected to the shaft (9) and/or detachably connected to at least one rotor (8) of the motor (3).
  6. Cleaning unit (1) according to claim 4 or 5,
    characterized in that
    the shaft (9) is connected to a rotor (8) of the motor (3) in a torque proof manner, in particular to a first and a second rotor (8) of the motor (3).
  7. Cleaning unit (1) according to any one of claims 4 to 6,
    characterized in that
    the shaft (9) has a first free end (9a) and a second free end (9b), in particular in that the first working body (4) can be arranged on the first free end (9a) and the second working body (5) can be arranged on the second free end (9b).
  8. Cleaning unit (1) according to any one of claims 1 to 7,
    characterized in that
    the motor (3) is arranged, in particular axially along a shaft (9), preferably centrally, between the first working body (4) and the second working body (5).
  9. Cleaning unit (1) according to any one of claims 4 to 8,
    characterized in that
    the first working body (4) and the second working body (5) are arranged coaxially on the shaft.
  10. Cleaning unit (10) according to any one of claims 1 to 9,
    characterized in that
    the motor (3), in particular the stator (7) of the motor (3), is held on a, preferably resiliently mounted, rocker (12).
  11. Cleaning unit (1) according to any one of claims 1 to 10,
    characterized in that
    the motor (3) is designed as an axial flux machine, in particular with permanent magnet excitation, or as a radial flux machine, for example in that a stator (7) of the motor (3) is designed in one or two parts.
  12. Cleaning unit (1) according to any one of claims 1 to 11,
    characterized in that
    at least one rotor (8) of the motor (3) has at least one permanent magnet (14) or at least one coil, in particular at least two, three or four permanent magnets (14).
  13. Cleaning robot, in particular vacuum and/or mopping robot, with at least one cleaning unit (1) according to one of claims 1 to 12.
  14. Suction nozzle, in particular floor nozzle, for a vacuum cleaner, comprising at least one cleaning unit (1) according to one of claims 1 to 12.
  15. Use of a cleaning unit (1), in particular according to one of claims 1 to 12, having at least one motor (3), at least one first working body (4) and at least one second working body (5), wherein the motor (3) is designed as an electric motor, wherein the first working body (4) and the second working body (5) can be rotated directly by the motor (3), and wherein the motor (3) is arranged centrally between the first working body (4) and the second working body (5), for arrangement in a cleaning device (2), in particular a cleaning robot or a floor nozzle, for cleaning a surface.
EP21206602.1A 2021-11-05 2021-11-05 Cleaning unit for a suction nozzle or a cleaning robot Active EP4176788B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21206602.1A EP4176788B1 (en) 2021-11-05 2021-11-05 Cleaning unit for a suction nozzle or a cleaning robot
CN202211360136.4A CN116942007A (en) 2021-11-05 2022-11-02 Cleaning unit for a suction nozzle or a cleaning robot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21206602.1A EP4176788B1 (en) 2021-11-05 2021-11-05 Cleaning unit for a suction nozzle or a cleaning robot

Publications (2)

Publication Number Publication Date
EP4176788A1 EP4176788A1 (en) 2023-05-10
EP4176788B1 true EP4176788B1 (en) 2025-02-12

Family

ID=78528795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21206602.1A Active EP4176788B1 (en) 2021-11-05 2021-11-05 Cleaning unit for a suction nozzle or a cleaning robot

Country Status (2)

Country Link
EP (1) EP4176788B1 (en)
CN (1) CN116942007A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023207653A1 (en) * 2023-08-09 2025-02-13 Volkswagen Aktiengesellschaft Robot comprising a working unit and a drive unit and method for producing a robot

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100384980B1 (en) * 1998-04-03 2003-06-02 마츠시타 덴끼 산교 가부시키가이샤 Rotational brush device and electric instrument using same
US7243393B2 (en) * 2001-02-06 2007-07-17 The Hoover Company Agitator drive configuration
DE10242257C5 (en) * 2001-09-14 2017-05-11 Vorwerk & Co. Interholding Gmbh Automatically movable floor dust collecting device, and combination of such a collecting device and a base station
DE102014114813A1 (en) * 2014-10-13 2016-04-14 Alfred Kärcher Gmbh & Co. Kg Surface cleaning machine and method for operating a surface cleaning machine
CN105125141A (en) * 2015-09-16 2015-12-09 美的集团股份有限公司 Suction brush of dust remover and dust remover with suction brush
DE102018119181A1 (en) 2018-08-07 2020-02-13 Vorwerk & Co. Interholding Gmbh Suction nozzle for a vacuum cleaner and vacuum cleaner for cleaning a surface

Also Published As

Publication number Publication date
CN116942007A (en) 2023-10-27
EP4176788A1 (en) 2023-05-10

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