EP3793419B1 - Robot de nettoyage avec brosse du côté retractable - Google Patents

Robot de nettoyage avec brosse du côté retractable Download PDF

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Publication number
EP3793419B1
EP3793419B1 EP18726138.3A EP18726138A EP3793419B1 EP 3793419 B1 EP3793419 B1 EP 3793419B1 EP 18726138 A EP18726138 A EP 18726138A EP 3793419 B1 EP3793419 B1 EP 3793419B1
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EP
European Patent Office
Prior art keywords
side brush
cleaning device
robotic cleaning
space
threaded rod
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
EP18726138.3A
Other languages
German (de)
English (en)
Other versions
EP3793419A1 (fr
Inventor
Andreas KLINTEMYR
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.)
Electrolux AB
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Electrolux AB
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Filing date
Publication date
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Publication of EP3793419A1 publication Critical patent/EP3793419A1/fr
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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
    • A47L9/0494—Height adjustment of dust-loosening tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • 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
    • A47L9/0472—Discs
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/008—Disc-shaped brush bodies
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0095—Brushes with a feature for storage after use
    • 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
    • A47L9/28—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
    • 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
    • A47L9/2852—Elements for displacement of the vacuum cleaner or the accessories therefor, e.g. wheels, casters or nozzles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/30—Brushes for cleaning or polishing
    • A46B2200/3033—Household brush, i.e. brushes for cleaning in the house or dishes
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
    • A47L2201/04—Automatic control of the travelling movement; Automatic obstacle detection
    • 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
    • A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
    • A47L2201/06—Control of the cleaning action for autonomous devices; Automatic detection of the surface condition before, during or after cleaning

Definitions

  • the invention relates to a robotic cleaning device being equipped with at least one retractable side brush.
  • Robotic vacuum cleaners are known in the art, which are equipped with drive means in the form of motors for moving the cleaner across a surface to be cleaned.
  • the robotic vacuum cleaners are further equipped with intelligence in the form of microprocessor(s) and navigation means for enabling an autonomous behaviour such that the robotic vacuum cleaners freely can move around and clean a space in the form of e.g. a room.
  • robotic vacuum cleaners have been arranged with circular-shaped main bodies.
  • Such a robot having co-axial drive wheels at the centre of its body has the advantage that it is easy to control and cannot easily get stuck since it always can rotate 180° and go back the same way it came.
  • the circular-shaped main body makes them unsuitable for cleaning corners or edges where a floor meets a wall since these circular vacuum cleaners due to their shape cannot move into a corner or close enough to a wall, or other objects around which cleaning is required such as e.g. chair legs.
  • EP 3 135 173 discloses a vacuum cleaner enabled to detect an obstacle at a position of a side brush while securely cleaning dust and dirt located outside an outer frame of a main casing by the side brush.
  • the vacuum cleaner includes the main casing, driving wheels, side brushes, an obstacle sensor, and a control unit.
  • the side brushes are provided so as to be reciprocatively movable in both a direction of protruding from the outer frame of the main casing and in an opposite direction, thus enabling cleaning of dust and dirt located outside the outer frame of the main casing.
  • the obstacle sensor detects an obstacle by detecting a movement of the side brush in the opposite direction due to its contact with the obstacle.
  • the control unit controls drive of the driving wheels based on detection of an obstacle by the obstacle sensor to make the main casing autonomously travel.
  • EP 2 583 608 discloses a robot cleaner and a method for controlling the same, capable of controlling a travelling or cleaning pattern of a robot cleaner in accordance with extension and retraction operations of an auxiliary cleaning tool to perform an efficient cleaning operation.
  • the robot cleaner includes a plurality of auxiliary cleaning units mounted to a bottom of the robot cleaner such that the auxiliary cleaning units are extendable and retractable, an obstacle sensor to sense an obstacle in a cleaning region of the robot cleaner, and a control unit to extend the auxiliary cleaning units while travelling in a wall tracing manner along the periphery of the cleaning region, and to retract the auxiliary cleaning units while the robot cleaner travels in an inner portion of the cleaning region when traveling of the periphery of the cleaning region is finished.
  • a problem with side brushes is that they have a tendency of performing poorly on certain types of surfaces, such as for instance carpets where carpet fibres can get entangled with the rotating brushes. Further, carpets also wear the side brushes down thereby impacting their durability and may even cause unintentional lift of the robot, not letting it sink into the carpet to clean it thoroughly. Another disadvantage is that the side brushes hamper the capability of the robot to climb over objects such as thresholds, cables and carpet edges.
  • An object of the invention is to solve, or at least mitigate this problem in the art, and thus to provide a robotic vacuum cleaner which is not hampered by its side brushes.
  • a robotic cleaning device comprising, a main body, a propulsion system configured to move the robotic cleaning device over a surface to be cleaned, a controller configured to control the propulsion system to move the robotic cleaning device over the surface to be cleaned, at least one rotatable side brush arranged to sweep debris from the surface to be cleaned.
  • the robotic cleaning device further comprises a mechanism configured to at least partly retract said at least one rotatable side brush into a space arranged inside the main body upon receiving a control signal from the controller, such that the rotatable side brush is moved out of contact with the surface to be cleaned.
  • the robotic cleaning device can avoid a situation where the side brush entangles with fibres of a carpet, or to improve the capability of the robot to climb over objects such as thresholds, cables and carpet edges, or simply enable to not permanently have the side brush contacting the surface over which the robotic cleaning device moves.
  • the mechanism further comprises a retractable member coupled to the at least one rotatable side brush arranged to retract the at least one rotatable side brush into said space, and an actuator (e.g. a motor) arranged to move the retractable member into, or out of, said space upon receiving a control signal from the controller.
  • an actuator e.g. a motor
  • said at least one rotatable side brush is arranged to be retractable into the space inside the main body in an axial direction with respect to the rotational axis of the side brush.
  • said space is cylindrically shaped and the mechanism configured to retract said at least one rotatable side brush comprises a threaded rod located in the cylindrically shaped space, an annular threaded member to which the at least one rotatable side brush is attached, the annular threaded member being arranged to engage with the threaded rod, and an actuator (e.g. a motor) configured to rotate the threaded rod.
  • an actuator e.g. a motor
  • a diameter of the cylindrically shaped space is adapted to a dimension of the at least one rotatable side brush such that friction is created between the side brush and an interior of the cylindrically shaped space, thereby at least partly preventing the at least one rotatable side brush (114) to rotate when in contact with said interior, wherein said friction causes the annular threaded member to move along the threaded rod to extend out from the space in order to have the at least one rotatable side brush rotate and sweep the debris from the surface to be cleaned upon the threaded rod rotating in a first direction, the threaded annular member moving along the threaded rod until it reaches an end member of the threaded rod preventing the annular threaded member to move out of threaded engagement with the threaded rod, and friction between the at least one rotating side brush and the surface to be cleaned causes the annular threaded member to move along the threaded rod to retract into the space upon the threaded rod rotating in a second direction.
  • the same actuator is used for retracting
  • the mechanism further comprises a spring arranged between the annular threaded member and the end member.
  • the robotic cleaning device further comprises an opening in a bottom side of the main body via which debris is removed from the surface, wherein the at least one rotatable side brush is arranged adjacent to the opening.
  • the invention relates to robotic cleaning devices, or in other words, to automatic, self-propelled machines for cleaning a surface, e.g. a robotic vacuum cleaner, a robotic sweeper or a robotic floor washer.
  • the robotic cleaning device according to the invention can be mains-operated and have a cord, be battery-operated or use any other kind of suitable energy source, for example solar energy.
  • Figure 1 shows a robotic cleaning device 100 according to an embodiment of the present invention in a bottom view, i.e. the bottom side of the robotic cleaning device is shown.
  • the arrow indicates the forward direction of the robotic cleaning device 100 being illustrated in the form of a robotic vacuum cleaner.
  • the robotic cleaning device 100 comprises a main body 111 housing components such as a propulsion system comprising driving means in the form of two electric wheel motors 115a, 115b for enabling movement of the driving wheels 112, 113 such that the cleaning device can be moved over a surface to be cleaned.
  • Each wheel motor 115a, 115b is capable of controlling the respective driving wheel 112, 113 to rotate independently of each other in order to move the robotic cleaning device 100 across the surface to be cleaned.
  • a number of different driving wheel arrangements, as well as various wheel motor arrangements, can be envisaged.
  • the robotic cleaning device may have any appropriate shape, such as a device having a more traditional circular-shaped main body, or a triangular-shaped main body.
  • a track propulsion system may be used or even a hovercraft propulsion system.
  • the propulsion system may further be arranged to cause the robotic cleaning device 100 to perform any one or more of a yaw, pitch, translation or roll movement.
  • a controller 116 such as a microprocessor controls the wheel motors 115a, 115b to rotate the driving wheels 112, 113 as required in view of information received from an obstacle detecting device (not shown in Figure 1 ) for detecting obstacles in the form of walls, floor lamps, table legs, around which the robotic cleaning device must navigate.
  • the obstacle detecting device may be embodied in the form of a 3D sensor system registering its surroundings, implemented by means of e.g. a 3D camera, a camera in combination with lasers, a laser scanner, etc. for detecting obstacles and communicating information about any detected obstacle to the microprocessor 116.
  • the microprocessor 116 communicates with the wheel motors 115a, 115b to control movement of the wheels 112, 113 in accordance with information provided by the obstacle detecting device such that the robotic cleaning device 100 can move as desired across the surface to be cleaned.
  • the robotic cleaning device 100 is equipped with one or more batteries 117 for powering the different components included in the cleaning device 100.
  • the one or more batteries 117 are charged via a charging station into which the robotic cleaning device 100 docks.
  • the main body 111 of the robotic cleaner 100 comprises a suction fan 120 creating an air flow for transporting debris to a dust bag or cyclone arrangement (not shown) housed in the main body via the opening 118 in the bottom side of the main body 111.
  • the suction fan 120 is driven by a fan motor 121 communicatively connected to the controller 116 from which the fan motor 121 receives instructions for controlling the suction fan 120.
  • the main body 111 is further arranged with one or more rotatable side brushes 114 adjacent to the opening 118. The rotation of the side brush 114 is typically accomplished by a separate motor (not shown in Figure 1 ), or a brush roll motor.
  • the controller/processing unit 116 embodied in the form of one or more microprocessors is arranged to execute a computer program 125 downloaded to a suitable storage medium 126 associated with the microprocessor, such as a Random Access Memory (RAM), a Flash memory or a hard disk drive.
  • the controller 116 is arranged to carry out a method according to embodiments of the present invention when the appropriate computer program 125 comprising computer-executable instructions is downloaded to the storage medium 126 and executed by the controller 116.
  • the storage medium 126 may also be a computer program product comprising the computer program 125.
  • the computer program 125 may be transferred to the storage medium 126 by means of a suitable computer program product, such as a digital versatile disc (DVD), compact disc (CD) or a memory stick.
  • a suitable computer program product such as a digital versatile disc (DVD), compact disc (CD) or a memory stick.
  • the computer program 125 may be downloaded to the storage medium 126 over a wired or wireless network.
  • the controller 116 may alternatively be embodied in the form of a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a complex programmable logic device (CPLD), etc.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • FIG 2 shows a front view of the robotic cleaning device 100 of Figure 1 in an embodiment of the present invention illustrating the previously mentioned obstacle detecting device in the form of a 3D sensor system comprising at least a camera 123 and a first and a second line laser 127, 128, which may be horizontally or vertically oriented line lasers. Further shown is the controller 116, the main body 111, the driving wheels 112, 113, and the rotatable side brush 114. The controller 116 is operatively coupled to the camera 123 for recording images of a vicinity of the robotic cleaning device 100.
  • the first and second line lasers 127, 128 may preferably be vertical line lasers and are arranged lateral of the camera 123.
  • the camera 123 is controlled by the controller 116 to capture and record a plurality of images per second. Data from the images is extracted by the controller 116 and the data is typically saved in the memory 126 along with the computer program 125.
  • the first and second line laser 127, 128 are configured to scan, preferably in a vertical orientation, the vicinity of the robotic cleaning device 100, normally in the direction of movement of the robotic cleaning device 100.
  • the first and second line lasers 127, 128 are configured to send out laser beams, which illuminate furniture, walls and other objects of e.g. a room to be cleaned.
  • the camera 123 is controlled by the controller 116 to capture and record images from which the controller 116 creates a representation or layout of the surroundings that the robotic cleaning device 100 is operating in, by extracting features from the images and by measuring the distance covered by the robotic cleaning device 100, while the robotic cleaning device 100 is moving across the surface 129 to be cleaned.
  • side brush 114 may be arranged on a robotic cleaning device 100 which is less complex than that exemplified for illustrative purposes in Figures 1 and 2 .
  • the robotic cleaning device 100 in order to avoid the side brush 114 entangling with fibres of a carpet, or to avoid hampering the capability of the robot 100 to climb over objects such as thresholds, cables and carpet edges, or simply to not permanently have the side brush 114 contacting the surface over which the robotic cleaning device 100 moves, the robotic cleaning device 100 is equipped with a mechanism for retracting the side brush 114 into a space in the main body 111.
  • Figure 3 illustrates the robotic cleaning device 100 being equipped with such a mechanism comprising a retractable member 119, such as a rod or a piston, on which the side brush 114 is arranged, and an actuator exemplified by motor 124 for retracting the rod 122 into the space 119 in the main body 111.
  • a retractable member 119 such as a rod or a piston
  • motor 124 for retracting the rod 122 into the space 119 in the main body 111.
  • the controller 116 will control the motor 124 to retract the rod 122 into the space 119 such that the side brush 114 advantageously is partly or fully retracted into the space 119 having as a result that the side brush 114 no longer contacts the surface 129.
  • the controller 116 will control the motor 124 to extend the rod 122 out from the space 119, whereby the side brush 124 will extend out from the space 119 and finally contact the surface 129 as shown in Figure 2 .
  • Figure 4 illustrates the robotic cleaning device 100 being equipped with a mechanism for extracting the rotatable side brush 114 into a space 119 in the main body 111 according to a further embodiment.
  • the rotatable side brush 114 is retracted into the space 119 in a direction being axial to the rotational axis of the rotatable side brush 114.
  • the retracting member 122 may be embodied by a rod or piston being retracted into - or extended out of - the space by means of a motor 124 such that the side brush 114 advantageously is partly or fully retracted into/extended out of the space 119 in order to move the side brush 114 in and out of contact with the surface 129.
  • the motor 124 is utilized for causing the retracting member 122 to retract into/extend out of the space 119 in the main body 111, and it may be necessary to equip the robotic cleaning device 100 with a further motor (not shown) for actually rotating the side brush 114.
  • Figure 5a illustrates a further embodiment of the mechanism for retracting the rotatable side brush 114 into the space 119 in a direction being axial to the rotational axis of the rotatable side brush 114.
  • the retracting member is embodied in the form of a threaded rod 122a located in the space 119, which threaded rod 122a the motor 124 is arranged to rotate.
  • the space 119 is cylindrically shaped (which may also be the case in the previously illustrated embodiments).
  • the mechanism comprises an annular threaded member 130 to which the side brush 114 is attached, which annular threaded member 130 is arranged to engage with the threaded rod 122a.
  • a diameter of the cylindrically shaped space 119 is adapted to the dimensions of the side brush 114 such that friction is created between the side brush 114 and an interior of the cylindrically shaped space.
  • the retracted side brush 114 is in close contact with the interior of the space 119.
  • the friction between the side brush 114 and the interior of the space 119 will prevent the side brush 114 from rotating - or at least from freely rotating - which has as an effect that the annular member 130 and thus the side brush 114 will move downwards along the threaded rod 122a and extend out of the space 119 until it reaches an end section 131 of the threaded rod 122a preventing the annular threaded member 130 to move out of threaded engagement with the threaded rod 122a.
  • the motor 124 will rotate the threaded rod 122a in the indicated first direction while the friction between the interior of the space 119 and the side brush 114 will prevent the side brush 114 from rotating.
  • the controller 116 will control the motor 124 to alter the rotational direction of the threaded rod 122a, in which case friction between the rotating side brush 114 and the surface 129 to be cleaned causes the annular threaded member 130 to move in an upward direction along the threaded rod 122a to retract into the space 119.
  • the motor 124 used for causing the side brush 114 to retract into/extend out of the space 119 is also used for rotating the side brush 114.
  • a single motor 124 can be used for handling both the retraction/extension as well as the rotation of the side brush 114.
  • Figure 7 illustrates a further embodiment, where a spring 132 is arranged between the end member 131 and the annular threaded member 130, the spring being attached to either one of the end member 131 and the annular threaded member 130.
  • a spring 132 is arranged between the end member 131 and the annular threaded member 130, the spring being attached to either one of the end member 131 and the annular threaded member 130.

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

Claims (8)

  1. Dispositif robot de nettoyage (100), comprenant :
    un corps principal (111) ;
    un système de propulsion (112, 113, 115a, 115b) configuré pour déplacer le dispositif robot de nettoyage (100) par-dessus une surface (129) destinée à être nettoyée ;
    une unité de commande (116) configurée pour commander le système de propulsion pour déplacer le dispositif robot de nettoyage (100) par-dessus la surface (129) destinée à être nettoyée ; et
    au moins une brosse latérale rotative (114) agencée pour balayer des débris à partir de la surface destinée à être nettoyée ;
    le dispositif robot de nettoyage étant en outre caractérisé en ce qu'il comprend un mécanisme configuré pour au moins partiellement rétracter ladite au moins une brosse latérale rotative (114) dans un espace (119) agencé à l'intérieur du corps principal (111) lors de la réception d'un signal de commande à partir de l'unité de commande (116), de telle sorte que la brosse latérale rotative soit déplacée hors de contact avec la surface (129) destinée à être nettoyée.
  2. Dispositif robot de nettoyage (100) selon la revendication 1, le mécanisme comprenant en outre :
    un élément rétractable (122) couplé à l'au moins une brosse latérale rotative (114), agencé pour rétracter l'au moins une brosse latérale rotative (114) dans ledit espace (119) ; et
    un actionneur (124) agencé pour déplacer l'élément rétractable (122) dans, ou hors de, ledit espace lors de la réception d'un signal de commande à partir de l'unité de commande (116).
  3. Dispositif robot de nettoyage (10) selon les revendications 1 ou 2, ladite au moins une brosse latérale rotative (114) étant agencée pour être rétractable dans l'espace (119) à l'intérieur du corps principal (111) dans une direction axiale par rapport à l'axe de rotation de la brosse latérale (114).
  4. Dispositif robot de nettoyage (10) selon la revendication 3, ledit espace (119) étant formé cylindriquement et le mécanisme étant configuré pour rétracter ladite au moins une brosse latérale rotative (12) comprenant :
    une tige filetée (122a) située dans l'espace formé cylindriquement (119) ;
    un élément fileté annulaire (130) auquel l'au moins une brosse latérale rotative (114) est fixée, l'élément fileté annulaire (130) étant agencé pour entrer en prise avec la tige filetée (122a) ;
    un actionneur (124) configuré pour mettre en rotation la tige filetée (122a) ; dans lequel
    un diamètre de l'espace formé cylindriquement (119) est adapté pour une dimension de l'au moins une brosse latérale rotative (114) de telle sorte qu'un frottement soit créé entre la brosse latérale (114) et un intérieur de l'espace formé cylindriquement, empêchant ainsi au moins partiellement l'au moins une brosse latérale rotative (114) d'entrer en rotation lorsqu'elle est en contact avec ledit intérieur ; dans lequel
    ledit frottement entraîne le déplacement de l'élément fileté annulaire (130) le long de la tige filetée (122a) pour s'étendre hors de l'espace (119) afin de faire en sorte que l'au moins une brosse latérale rotative (114) entre en rotation et balaye les débris à partir de la surface (129) destinée à être nettoyée alors que la tige filetée (122a) est en rotation dans une première direction, l'élément annulaire fileté (130) se déplaçant le long de la tige filetée (122a) jusqu'à ce qu'il atteigne un élément d'extrémité (131) de la tige filetée (122a) empêchant l'élément fileté annulaire (130) de se déplacer hors de prise filetée avec la tige filetée (122a) ; et
    le frottement entre l'au moins une brosse latérale rotative (114) et la surface (129) destinée à être nettoyée entraîne le déplacement de l'élément fileté annulaire (130) le long de la tige filetée (122a) pour se rétracter dans l'espace (119) alors que la tige filetée (122a) est en rotation dans une seconde direction.
  5. Dispositif robot de nettoyage (100) selon la revendication 4, le mécanisme comprenant en outre :
    un ressort (132) agencé entre l'élément fileté annulaire (130) et l'élément d'extrémité (131).
  6. Dispositif robot de nettoyage (100) selon la revendication 4, comprenant en outre :
    une ouverture (117) dans un côté inférieur du corps principal par l'intermédiaire de laquelle des débris sont ôtés de la surface (129), dans lequel l'au moins une brosse latérale rotative (114) est agencée de façon adjacente à l'ouverture (117).
  7. Dispositif robot de nettoyage (100) selon l'une quelconque des revendications 2 à 6, l'actionneur (124) étant un moteur.
  8. Dispositif robot de nettoyage (100) selon l'une quelconque des revendications précédentes, le dispositif robot de nettoyage (100) étant un robot aspirateur, un robot balayeur ou un robot laveur de sol.
EP18726138.3A 2018-05-18 2018-05-18 Robot de nettoyage avec brosse du côté retractable Active EP3793419B1 (fr)

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CN112188857B (zh) 2022-10-28
KR102510728B1 (ko) 2023-03-15
KR20210011377A (ko) 2021-02-01
CN112188857A (zh) 2021-01-05
US20210228035A1 (en) 2021-07-29
EP3793419A1 (fr) 2021-03-24
WO2019219213A1 (fr) 2019-11-21
JP2021523769A (ja) 2021-09-09

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