Autonomous cleaning robot with a dust deflector

Abstract

The autonomous cleaning robot comprises a suction chamber (6) with a suction port, a rotating cleaning brush (7) housed in the suction chamber (6), a dirt collection container (16), a dirt guide channel (17) fluidly connecting the suction chamber (6) to the dirt collection container and having a generally cylindrical shape, a lower deflector (18) configured to deflect dirt thrown onto the lower deflector (18) by the rotating cleaning brush (7) upward and toward the dirt guide channel (17), and an upper deflector (21) configured to deflect dirt exiting upward from the dirt guide channel (17) backward and toward the dirt collection container (16).

Description

[Technical Field]

[0001] The present invention relates to the field of robotic vacuum cleaners that can be moved autonomously over the surface to be cleaned, that can suck up dirt and debris present on the surface to be cleaned, which can be, for example, tiles, parquet, laminate, carpets or rugs, and that can wash the surface to be cleaned simultaneously with the suction action. [Background technology]

[0002] technical level Autonomous cleaning robots are commonplace today, allowing them to clean any surface in the home without any assistance from the user, as long as those surfaces are flat, i.e., at the same height. They therefore provide significant time savings to users, allowing them to perform other tasks.

[0003] The autonomous cleaning robot, in a known manner, a body including a lower surface configured to be directed towards a surface to be cleaned and a suction port emerging from the lower surface of the body, the body defining a suction chamber fluidly connected to the suction port; - two drive wheels mounted on the body for rotation about two substantially parallel axes of rotation, the drive wheels being adapted to roll on the surface to be cleaned; a rotating cleaning brush housed within the suction chamber and mounted for rotation around a brush rotation axis; a suction unit at least partially housed within the body and configured to generate an airflow through the suction opening; a dirt collection device including a dirt collection container positioned upstream of the suction unit and configured to be traversed by the airflow generated by the suction unit and to hold dirt carried by the airflow; a connecting duct fluidly connecting the suction chamber to the dirt collection container.

[0004] When using such autonomous cleaning robots, certain types of debris, such as rice grains and lentils, may be ejected from the suction chamber through the suction port after bouncing off the inner walls of the suction chamber and the rotating cleaning brush multiple times before being sucked into the debris collection container, thus preventing such autonomous cleaning robots from efficiently collecting large and medium-sized debris present on the surface to be cleaned. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to remedy these drawbacks.

[0006] The technical problem underlying the present invention is to provide an autonomous cleaning robot that exhibits particularly high cleaning performance, while at the same time being simple, economical and compact in structure. [Means for solving the problem]

[0007] To this end, the present invention relates to an autonomous cleaning robot, comprising: a body including a lower surface configured to be directed towards a surface to be cleaned and a suction port emerging from the lower surface of the body, the body defining a suction chamber fluidly connected to the suction port; a rotating cleaning brush housed in the suction chamber and mounted for rotation about a brush rotation axis; a suction unit at least partially housed within the body and configured to generate an airflow through the suction opening; a dirt collecting device comprising a dirt collecting container positioned at the rear of the suction chamber and upstream of the suction unit, the dirt collecting container being traversed by the airflow generated by the suction unit and configured to hold dirt carried by the airflow; a dirt guiding channel fluidly connecting the suction chamber to the dirt collection receptacle, the guiding channel having a generally cylindrical shape and configured to extend substantially vertically when the autonomous cleaning robot is at rest on a horizontal surface; a lower deflector positioned rearward of the brush rotation axis and extending at least partially opposite the inlet opening of the dirt guide channel, the lower deflector having a lower deflection surface partially defining a suction chamber, the lower deflection surface being configured to deflect dirt thrown by the rotating cleaning brush rearward onto the lower deflection surface upwards and towards the dirt guide channel; an upper deflector extending at least partially opposite the outlet opening of the waste guide channel, the upper deflector having an upper deflection surface configured to deflect waste exiting upward from the waste guide channel rearward and towards the waste collection receptacle.

[0008] Such a configuration of the lower deflector, the upper deflector, and the dirt guiding channel allows the dirt thrown into the suction chamber by the rotating cleaning brush to be effectively guided toward the dirt collection container, particularly by successive rebounding against the lower deflector, the inner wall of the dirt guiding channel, and the upper deflector, thus ensuring efficient collection of dirt, especially large and medium-sized dirt, present on the surface to be cleaned. Such cleaning performance is obtained without the need for a high-power suction unit, thus maintaining the autonomy of the autonomous cleaning robot.

[0009] Furthermore, the substantially vertical arrangement of the dirt guiding channel provides the autonomous cleaning robot with improved longitudinal compactness.

[0010] The autonomous cleaning robot of the present invention, like most autonomous cleaning robots, is designed to effectively clean floor surfaces when moved in a predetermined direction of movement parallel to the longitudinal axis of the autonomous cleaning robot. The predetermined direction of movement parallel to the longitudinal axis of the autonomous cleaning robot defines the main direction of movement of the autonomous cleaning robot of the present invention. Thus, the front or rear of the autonomous cleaning robot body is determined relative to the main direction of movement of the autonomous cleaning robot.

[0011] The autonomous cleaning robot may further have one or more of the following features, either alone or in combination:

[0012] According to one embodiment of the present invention, the upper deflection surface is configured to deflect debris exiting upwardly from the dirt guide channel rearwardly toward a lower portion of the dirt collection receptacle.

[0013] According to one embodiment of the present invention, the dirt guide channel is configured to extend vertically when the autonomous cleaning robot is at rest on a horizontal surface, or configured to be inclined at an angle of 10° or less, for example, 5° or less, relative to the vertical when the autonomous cleaning robot is at rest on a horizontal surface.

[0014] According to one embodiment of the present invention, the dirt guiding channel has a circular or oval cross section.

[0015] According to one embodiment of the present invention, the lower deflector is elongated and extends substantially parallel to the brush rotation axis.

[0016] According to one embodiment of the present invention, the lower deflector extends over substantially the entire length of the rotary cleaning brush, which configuration reduces the risk of large debris being ejected from the suction chamber and thus facilitates suction of this debris by the debris guiding channel.

[0017] According to one embodiment of the present invention, the lower deflector forms the trailing edge of the suction port, which configuration limits the depth of the autonomous cleaning robot according to the present invention while facilitating the guidance of the sucked debris towards the debris guidance channel.

[0018] According to one embodiment of the present invention, the downward deflection surface is configured to be tilted backward and upward at an angle comprised between 20°-55°, advantageously between 25°-45°, with respect to the horizontal when the autonomous cleaning robot is at rest on a horizontal surface, for example about 37°. Such a tilt of the downward deflection surface further reduces the height and depth of the autonomous cleaning robot according to the present invention, while at the same time facilitating the guidance of the sucked dirt towards the dirt collection bin.

[0019] According to one embodiment of the present invention, the lower deflection surface is flat.

[0020] According to one embodiment of the present invention, the lower deflector and the upper deflector are positioned at least partially opposite each other.

[0021] According to one embodiment of the present invention, the dirt guiding channel includes a front wall and a rear wall that are substantially parallel to each other and spaced apart from each other by a spaced distance, so that dirt sucked by the dirt guiding channel bounces off the front wall and the rear wall of the dirt guiding channel in turn and is thus efficiently guided to the dirt collection receptacle.

[0022] According to one embodiment of the present invention, the upper deflection surface is configured such that an inclined plane passing through a first intersection point between the upper deflection surface and a plane containing the front wall of the waste guide channel and a second intersection point between the upper deflection surface and a plane containing the rear wall of the waste guide channel is inclined rearward and upward and has an inclination relative to the horizontal (also called an elevation angle) that is substantially the same as the inclination relative to the horizontal of the lower deflection surface.

[0023] According to one embodiment of the present invention, the difference between the slope of the inclined surface and the slope of the lower deflection surface is less than 10°. Advantageously, the slope of the inclined surface is greater than the slope of the lower deflection surface.

[0024] According to one embodiment of the present invention, the upper deflection surface is curved and has an aerodynamic profile, such as a profile with a gentle curvature like the profile of an aircraft wing, which configuration of the upper deflection surface reduces turbulence within the dirt collection bin and ensures optimal capture of debris within the dirt collection bin.

[0025] According to another embodiment of the invention, the upper deflection surface is substantially flat and is sloped upward and backward. The upper deflection surface may, for example, have a slope that is substantially the same as the slope of the lower deflection surface.

[0026] According to one embodiment of the present invention, the dirt guide channel is located behind the brush rotation axis.

[0027] According to one embodiment of the present invention, the dirt guide channel emerges at the rear of the suction chamber, which further facilitates guiding the sucked dirt to the dirt collection container.

[0028] According to one embodiment of the present invention, the body has a central longitudinal face that intersects with the dirt guide channel.

[0029] According to one embodiment of the present invention, the distance between the first vertical plane containing the leading edge of the lower deflector and the second vertical plane containing the trailing edge of the lower deflector is less than the above-mentioned separation distance. This arrangement further reduces the depth of the autonomous cleaning robot according to the present invention.

[0030] According to one embodiment of the present invention, the front and rear walls of the dirt guiding channel are configured to extend substantially vertically when the autonomous cleaning robot is at rest on a horizontal surface. The front and rear walls of the dirt guiding channel may be configured to extend vertically when the autonomous cleaning robot is at rest on a horizontal surface, or may be configured to be inclined at an angle of 10° or less, e.g., 5° or less, relative to the vertical when the autonomous cleaning robot is at rest on a horizontal surface.

[0031] According to an embodiment of the present invention, the distance is comprised between 15-40 mm, advantageously between 15-25 mm, for example about 20 mm, such a distance value ensuring improved suction power and guiding of dirt to the dirt collection bin while limiting the depth of the autonomous cleaning robot.

[0032] According to one embodiment of the present invention, the suction chamber is positioned opposite the rotating cleaning brush and includes a rear chamber wall extending substantially parallel to the brush rotation axis, the rear chamber wall being positioned at a separation distance from a vertical plane containing the brush rotation axis and configured to extend substantially vertically when the autonomous cleaning robot is at rest on a horizontal surface.

[0033] According to one embodiment of the present invention, the ratio of the largest dimension of the dirt guiding channel to the smallest distance between the outer periphery of the rotating cleaning brush and the rear chamber wall, measured parallel to the main direction of movement of the autonomous cleaning robot, is comprised between 1 and 2.5, advantageously between 1.5 and 2, for example about 1.7. Such a ratio further reduces the risk that certain types of dirt will be expelled from the suction chamber before being sucked into the dirt guiding channel.

[0034] In other words, the ratio of the maximum dimension of the dirt guiding channel measured parallel to the main direction of movement of the autonomous cleaning robot to the difference between the separation distance and the brush radius of the rotating cleaning brush is comprised between 1-2.5, advantageously between 1.5-2.5, for example about 1.7.

[0035] According to one embodiment of the present invention, the downward deflector extends to the rear chamber wall, for example from the rear edge of the suction port to the rear chamber wall.

[0036] According to one embodiment of the present invention, the largest dimension of the dirt guiding channel measured parallel to the main direction of movement of the autonomous cleaning robot corresponds to the separation distance between the front and rear walls of the dirt guiding channel.

[0037] According to one embodiment of the invention, the maximum dimension of the dirt guiding channel corresponds to the inner diameter of the dirt guiding channel when the dirt guiding channel has a circular cross section.

[0038] According to one embodiment of the present invention, the trailing edge of the suction port is positioned at an edge distance from a vertical plane containing the brush rotation axis, the edge distance being smaller than the separation distance. When the lower deflector forms the trailing edge of the suction port, the distance between the leading edge of the lower deflector and the vertical plane containing the brush rotation axis is equal to the edge distance.

[0039] According to one embodiment of the present invention, the largest dimension of the dirt guiding channel, measured parallel to the main direction of movement of the autonomous cleaning robot, is greater than the difference between the separation distance and the edge distance, and less than the separation distance.

[0040] According to one embodiment of the present invention, the edge distance is less than or equal to the brush radius of the rotating cleaning brush.

[0041] According to one embodiment of the present invention, the dirt guide channel has a first maximum dimension measured parallel to the primary direction of movement of the autonomous cleaning robot and a second maximum dimension measured in a direction perpendicular to the central longitudinal plane of the body, the first maximum dimension being smaller than the second maximum dimension.

[0042] According to one embodiment of the present invention, the suction chamber includes a dust deflector having a first deflector portion and a second deflector portion positioned on either side of the entrance opening of the dust guiding channel, the first deflector portion and the second deflector portion respectively including a first deflection surface and a second deflection surface configured to be directed towards the surface to be cleaned, the first deflection surface being inclined such that the distance between the surface to be cleaned and the first deflection surface increases in the direction of the entrance opening of the dust guiding channel, for example from the first end of the rotary cleaning brush towards the entrance opening of the dust guiding channel, and the second deflection surface being inclined such that the distance between the surface to be cleaned and the second deflection surface increases in the direction of the entrance opening of the dust guiding channel, for example from the second end of the rotary cleaning brush towards the entrance opening of the dust guiding channel. Therefore, the dirt flowing into the suction chamber, especially the dirt flowing from the side of the suction chamber, bounces off the first and second deflection surfaces and is gradually conveyed to the inlet opening of the dirt guiding channel, which is then sucked and guided toward the dirt collection container. Such a configuration of the dirt deflector can further improve the cleaning performance of the autonomous cleaning robot according to the present invention.

[0043] According to one embodiment of the present invention, the first deflection surface extends from a first side edge of the suction port to the entrance opening of the dirt guide channel, and the second deflection surface extends from a second side edge of the suction port to the entrance opening of the dirt guide channel.

[0044] According to one embodiment of the present invention, each of the first and second deflection surfaces is positioned opposite a lower deflector, for example, a lower deflection surface. Therefore, dust entering the suction chamber from the side of the suction chamber bounces off the lower deflector and one of the first and second deflection surfaces in turn, and is gradually transported to the inlet opening of the dust guiding channel, where it is then sucked and guided toward the dust collection container. Such a configuration of the dust deflector further improves the cleaning performance of the autonomous cleaning robot according to the present invention.

[0045] According to one embodiment of the present invention, the dirt deflector is configured to prevent rotation of dirt within the suction chamber.

[0046] According to an embodiment of the present invention, each of the first and second deflection surfaces is configured to be inclined with respect to the horizontal at an angle of inclination comprised between 2° and 20°, advantageously between 2° and 10°, for example about 5°, when the autonomous cleaning robot is at rest on a horizontal surface. Such an inclination makes it possible to limit the height of the autonomous cleaning robot according to the invention.

[0047] According to one embodiment of the present invention, each of the first and second deflecting surfaces extends transversely, for example substantially perpendicularly, to a primary direction of movement of the autonomous cleaning robot.

[0048] According to one embodiment of the present invention, each of the first and second deflection surfaces is substantially flat.

[0049] According to one embodiment of the present invention, each of the first and second deflection surfaces has a width measured parallel to the main direction of movement of the autonomous cleaning robot, the width increasing in the direction of the inlet opening of the dirt guide channel.

[0050] According to one embodiment of the present invention, the suction chamber includes a rear deflector having a first rear deflector portion and a second rear deflector portion positioned on either side of the entrance opening of the dirt guiding channel and configured to extend substantially vertically when the autonomous cleaning robot is stationary on a horizontal surface, the first and second rear deflector portions including a first rear deflection surface and a second rear deflection surface facing the rotating cleaning brush, respectively, the first rear deflection surface being inclined such that the distance between the brush rotation axis and the first rear deflection surface increases in the direction of the entrance opening of the dirt guiding channel, for example, from the first end of the rotating cleaning brush toward the entrance opening of the dirt guiding channel, and the second rear deflection surface being inclined such that the distance between the brush rotation axis and the second rear deflection surface increases in the direction of the entrance opening of the dirt guiding channel, for example, from the second end of the rotating cleaning brush toward the entrance opening of the dirt guiding channel. Therefore, dirt entering the suction chamber from the side thereof bounces off either the first or second rear deflection surface and the rotating cleaning brush in turn, and is gradually conveyed to the inlet opening of the dirt guiding channel, where it is then sucked and guided toward the dirt collection container. Such a configuration of the dirt deflector makes it possible to further improve the cleaning performance of the autonomous cleaning robot according to the present invention.

[0051] According to one embodiment of the present invention, the first and second rearward deflection surfaces are each substantially flat.

[0052] According to one embodiment of the present invention, the first rearward deflection surface extends from a first side edge of the suction port to the rear chamber wall, and the second rearward deflection surface extends from a second side edge of the suction port to the rear chamber wall.

[0053] According to one embodiment of the present invention, each of the first and second rear deflection surfaces is inclined with respect to a plane perpendicular to the central longitudinal plane of the body at an inclination angle comprised between 2° and 20°, advantageously between 2° and 10°, for example about 4°. Such an inclination makes it possible to limit the depth of the autonomous cleaning robot according to the invention.

[0054] According to one embodiment of the invention, the first and second rear deflection surfaces extend on opposite sides of the rear chamber wall. Advantageously, each of the first and second rear deflection surfaces extends to the rear chamber wall.

[0055] According to one embodiment of the present invention, the rotating cleaning brush has a brush diameter comprised between 30-60 mm, advantageously between 35-45 mm, for example about 41 mm.

[0056] According to one embodiment of the present invention, the rotating cleaning brush comprises: a brush body having a central longitudinal axis and configured to be rotationally driven about a brush axis of rotation in a predetermined direction of rotation, the brush axis of rotation being substantially coaxial with the central longitudinal axis of the brush body; at least one row of bristles disposed on the outer circumferential surface of the brush body and extending over at least a portion of the length of the brush body.

[0057] According to one embodiment of the present invention, the brush body has an outer diameter comprised between 20-40 mm, for example about 33 mm.

[0058] The difference between the outer diameter of the brush body and the brush diameter is equivalent to twice the free length of the bristles.

[0059] According to one embodiment of the present invention, the free length of the bristles is comprised between 3-8 mm and advantageously is equal to about 4 mm.

[0060] According to one embodiment of the present invention, the rotating cleaning brush has a rotational speed, during operation, comprised between about 1000-5000 revolutions per minute.

[0061] According to one embodiment of the present invention, an autonomous cleaning robot is configured to roll over a surface to be cleaned and includes two drive wheels rotatably mounted to a body about two substantially parallel axes of rotation, respectively.

[0062] According to one embodiment of the present invention, the autonomous cleaning robot further includes a wet cleaning device including at least one mop holder attached to the body and at least one mop removably attached to the at least one mop holder and configured to contact the surface to be cleaned.

[0063] According to one embodiment of the present invention, the wet cleaning device is located at the rear of the main body.

[0064] According to one embodiment of the present invention, the autonomous cleaning robot includes a cleaning liquid tank, and the wet cleaning device includes at least one liquid outlet orifice configured to be fluidly connected to the cleaning liquid tank and configured to supply cleaning liquid to at least one mop attached to the at least one mop holder.

[0065] According to one embodiment of the present invention, the autonomous cleaning robot includes a power battery configured to electrically power the autonomous cleaning robot.

[0066] According to one embodiment of the present invention, the suction unit includes a suction motor and a fan coupled to the suction motor and configured to generate an airflow through the suction port.

[0067] According to one embodiment of the present invention, the dust collection device is removably attached to the main body.

[0068] According to one embodiment of the present invention, the suction port is provided at the front of the main body.

[0069] According to one embodiment of the present invention, the brush rotation axis extends transversely, e.g., perpendicularly, to the main direction of movement of the autonomous cleaning robot.

[0070] According to one embodiment of the present invention, the suction port has an elongated shape and extends laterally, e.g., perpendicularly, to the main direction of movement of the autonomous cleaning robot.

[0071] According to one embodiment of the present invention, the dirt collection receptacle has a bottom wall that is spaced apart from an upper end of the rear wall of the dirt guiding channel, i.e., when the autonomous cleaning robot is stationary on a horizontal surface, the bottom wall of the dirt collection receptacle is closer to said horizontal surface than the upper end of the rear wall of the dirt guiding channel.

[0072] According to one embodiment of the present invention, the autonomous cleaning robot includes a partition wall configured to at least partially separate the dirt guiding channel and the dirt collection bin.

[0073] According to one embodiment of the present invention, the upper deflection surface is positioned a distance from the upper end of the partition wall and together with the partition wall defines a connecting passageway fluidly connecting the dirt guide channel to the dirt collection receptacle.

[0074] According to one embodiment of the present invention, the rotating cleaning brush is configured to discharge dirt towards the rear of the suction chamber, for example at a discharge angle comprised between 0° and 20°, measured in the central longitudinal plane of the body, such a discharge angle being defined by the minimum discharge path of the dirt discharged by the rotating cleaning brush and the maximum discharge path of the dirt discharged by the rotating cleaning brush.

[0075] According to one embodiment of the present invention, the elevation difference between the leading edge and the trailing edge of the lower deflector (in other words, the distance between a first horizontal plane containing the leading edge of the lower deflector and a second horizontal plane containing the trailing edge of the lower deflector) is substantially equal to the difference between the separation distance and the edge distance multiplied by the tangent of the inclination angle of the lower deflector surface.

[0076] According to one embodiment of the present invention, the separation distance multiplied by the tangent of the discharge angle is less than the difference between the separation distance multiplied by the tangent of the tilt angle of the lower deflection surface and the edge distance.

[0077] According to one embodiment of the present invention, the suction chamber is at least partially defined by a cylindrical surface having a circular cross section and a longitudinal axis substantially coaxial with the axis of rotation of the brush, advantageously with a difference between the radius of the cylindrical surface and the brush radius of the rotating cleaning brush being comprised between 0.5 and 2 mm.

[0078] The objects, aspects and advantages of the present invention will be better understood from the following description of some embodiments of the invention, given by way of non-limiting examples, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0079] [Figure 1] FIG. 1 is a top perspective view of an autonomous cleaning robot according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a bottom perspective view of the autonomous cleaning robot of FIG. 1. [Figure 3] FIG. 2 is a partial bottom perspective view of the autonomous cleaning robot of FIG. 1. [Figure 4] FIG. 2 is a bottom view of the autonomous cleaning robot of FIG. 1. [Figure 5] FIG. 2 is a side view of the autonomous cleaning robot of FIG. 1. [Figure 6] FIG. 2 is a longitudinal cross-sectional view of the autonomous cleaning robot of FIG. 1. [Figure 7] FIG. 7 is an enlarged view of a detail of FIG. 6. [Figure 8] FIG. 2 is a top perspective view of the autonomous cleaning robot of FIG. 1, showing the wet cleaning device detached from the main body. [Figure 9] FIG. 2 is a partial bottom perspective view of the autonomous cleaning robot of FIG. 1. [Figure 10] FIG. 2 is a partial bottom view of the front of the autonomous cleaning robot of FIG. 1. [Figure 11] FIG. 2 is a longitudinal cross-sectional view of an autonomous cleaning robot according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0080] Detailed Description Only the elements necessary for understanding the invention are shown. To facilitate reading the figures, identical elements have the same reference numerals from one figure to another.

[0081] The terms "horizontal," "vertical," "lower," "upper," "above," and "below" used in this specification to describe an autonomous cleaning robot or body refer to the autonomous cleaning robot when, in use, it is resting by its wheels on a flat and level floor surface to be cleaned.

[0082] As used herein, the term "brush diameter" refers to the outer diameter of a rotary cleaning brush measured at the free ends of the bristles. In other words, the brush diameter corresponds to the diameter of a circle centered on the central longitudinal axis of the brush body and in which the rotary cleaning brush is inscribed.

[0083] As used herein, the terms "forward" and "rearward" are defined relative to the autonomous cleaning robot's primary direction of movement.

[0084] In this specification, the term "median longitudinal plane" means a vertical plane parallel to the main direction of movement and dividing the body into two substantially equal parts.

[0085] 1-10 illustrate an autonomous cleaning robot 2, more specifically a robotic vacuum cleaner, configured to be autonomously moved over a surface to be cleaned.

[0086] The autonomous cleaning robot 2 comprises a body 3 including a lower surface 4 oriented towards the surface to be cleaned and a suction port 5 provided in a front part 3.1 of the body 3 and emerging on the lower surface 4 of the body 3. Advantageously, the suction port 5 is elongated and extends in an extension direction perpendicular to the main direction of movement D of the autonomous cleaning robot 2.

[0087] As shown in FIG. 6, the body 3 defines a suction chamber 6 which emerges at the lower surface 4 of the body 3 via a suction port 5 .

[0088] 1-10, the body 3 has a generally D-shape when viewed from above in a substantially vertical orientation. However, the body 3 could have a completely different shape, for example a generally circular or rectangular shape.

[0089] The autonomous cleaning robot 2 further comprises a rotating cleaning brush 7 housed within the suction chamber 6 and rotatably mounted about a brush rotation axis A1 extending transversely, more specifically perpendicularly, to the main direction of movement D. Advantageously, the brush rotation axis A1 is substantially horizontal when the autonomous cleaning robot 2 is at rest on a horizontal surface.

[0090] The rotating cleaning brush 7 is configured to discharge dirt towards the rear of the suction chamber 6 at a discharge angle comprised between 0° and 20°, measured in the central longitudinal plane P of the main body 3. Such a discharge angle is determined depending on the type of floor surface, which may in particular be a hard floor surface such as a tile or a soft floor surface, for example a carpet, and depending on the type of dirt, for example rice grains or lentils, by a minimum discharge path of the dirt discharged by the rotating cleaning brush 7 and a maximum discharge path of the dirt discharged by the rotating cleaning brush 7. The paths of the dirt discharged by the rotating cleaning brush 7 according to the minimum and maximum discharge paths are shown by dotted lines in Figure 7.

[0091] The dirt discharge angle and discharge speed depend, inter alia, on the rotation speed of the rotary cleaning brush 7, the brush diameter, the type of bristles, the free length of the bristles and the type of floor surface to be cleaned. The rotation speed and diameter of the rotary cleaning brush 7 make it possible to determine the tangential velocity at the periphery of the rotary cleaning brush 7, i.e. the tangential velocity at the tips of the bristles. The type of bristles and the free length of the bristles also determine the flexibility of the bristles, which affects the dirt discharge speed and discharge angle.

[0092] According to the embodiment shown in Figures 1-10, the rotary cleaning brush 7 comprises a brush body 8 having a central longitudinal axis and configured to be rotationally driven in a predetermined rotational direction, which is indicated schematically in Figure 7 by an arrow rotating counterclockwise around the brush rotational axis A1. Advantageously, the brush rotational axis A1 is coaxial with the central longitudinal axis of the brush body 8.

[0093] The rotary cleaning brush 7 further includes one or more rows of bristles 9, for example two rows of bristles 9, disposed on the outer circumferential surface of the brush body 8 and extending over at least a portion of the length of the brush body 8.

[0094] According to a variant of the invention, the rotary cleaning brush 7 could further comprise one or more cleaning strips, e.g. elastically deformable or rigid, provided on the outer circumferential surface of the brush body 8, or could comprise cleaning strips instead of the rows of bristles 9.

[0095] The rotating cleaning brush 7 may have a brush diameter of between 30-60 mm, advantageously between 35-45 mm, for example about 41 mm, and the brush body 8 may have an outer diameter of between 20-40 mm, for example about 33 mm. The difference between the outer diameter of the brush body 8 and the brush diameter corresponds to twice the free length of the bristles. The bristles may have a free length of between 3-8 mm, for example about 4 mm. The bristles are made, for example, of nylon and advantageously have a diameter of between 0.15-0.25 mm.

[0096] The rotating cleaning brush 7 according to the invention has a typical rotational speed, in operation, comprised between about 1000-5000 revolutions per minute, or about 104.7-523.6 radians per second.

[0097] The autonomous cleaning robot 2 also includes a drive mechanism (not visible) configured to drive the brush body 8 to rotate about the brush rotation axis A1.

[0098] 1-10, the suction chamber 6 is at least partially defined by a cylindrical surface having a circular cross section and a longitudinal axis substantially coaxial with the brush rotation axis A1. Advantageously, the difference between the radius of the cylindrical surface and the brush radius R of the rotating cleaning brush 7 is comprised between 0.5-2 mm.

[0099] 2-4, the autonomous cleaning robot 2 comprises two drive wheels 11 configured to roll over the surface to be cleaned. The two drive wheels 11 are rotatably mounted to the body 3 and have parallel, advantageously collinear, axes of rotation. Advantageously, the axes of rotation of the drive wheels 11 extend perpendicular to the main direction of movement D.

[0100] The two drive wheels 11 are configured to protrude from the underside 4 of the body 3 and are arranged on either side of the central longitudinal plane P of the body 3. Advantageously, the two drive wheels 11 are arranged symmetrically with respect to the central longitudinal plane P of the body 3 and are lateral wheels of the autonomous cleaning robot 2.

[0101] The two drive wheels 11 are advantageously driven independently of each other. Thus, the autonomous cleaning robot 2 includes two rotational drive mechanisms 12 housed within the main body 3, each configured to rotationally drive a respective one of the two drive wheels 11. Each rotational drive mechanism 12 includes a drive motor rotationally coupled to the respective drive wheel 11 and disposed, for example, on each side of the main body 3. Depending on the control of the two drive motors, the main body 3 can turn left or right, or turn by itself, and move forward or backward.

[0102] According to the embodiment shown in Figures 1-10, the autonomous cleaning robot 2 includes additional wheels 13 rotatably mounted relative to the main body 3, for example two additional wheels 13 arranged at the front 3.1 of the main body 3. Advantageously, all of the additional wheels 13 are positioned in front of the rotation axes of the two drive wheels 11, and the autonomous cleaning robot 2 lacks additional wheels positioned behind the rotation axes of the two drive wheels 11.

[0103] The autonomous cleaning robot 2 further includes a suction unit 14 housed within the main body 3. The suction unit 14 includes a suction motor and a fan coupled to the suction motor and configured to generate an airflow through the suction port 5.

[0104] The autonomous cleaning robot 2 also includes a dirt collection device 15 (see FIG. 6 ) removably attached to the main body 3. The dirt collection device 15 includes a dirt collection container 16 positioned upstream of the suction unit 14. The dirt collection container 16 is configured to be traversed by the airflow generated by the fan and to hold dirt carried by the airflow when the autonomous cleaning robot 2 is in operation.

[0105] The autonomous cleaning robot 2 further includes a dirt guiding channel 17 that fluidly connects the suction chamber 6 to the dirt collection container 16. The dirt guiding channel 17 has a generally cylindrical shape and is configured to extend vertically when the autonomous cleaning robot 2 is at rest on a horizontal surface. However, the dirt guiding channel 17 could be configured to be inclined at an angle of 10° or less, for example, 5° or less, relative to the vertical when the autonomous cleaning robot 2 is at rest on a horizontal surface.

[0106] 1-10, the dirt guiding channel 17 has a rectangular cross-section; however, it could have an elliptical cross-section. As shown more particularly in FIG. 10, the dirt guiding channel 17 has a first maximum dimension measured parallel to the primary direction of movement D of the autonomous cleaning robot 2 and a second maximum dimension measured perpendicular to the central longitudinal plane P of the body 3, the first maximum dimension being smaller than the second maximum dimension.

[0107] As shown in FIGS. 6 and 10, the dirt guide channel 17 emerges at the rear of the suction chamber 6 and the central longitudinal plane P of the body 3 intersects with the dirt guide channel 17.

[0108] 1-10, the dirt guide channel 17 comprises a front wall 17.1 and a rear wall 17.2 that are parallel to each other and spaced apart by a distance D1 comprised between 15-40 mm, advantageously between 15-25 mm, for example about 20 mm. Advantageously, the dirt collection container 16 comprises a bottom wall 16.1 that is spaced apart from the upper end of the rear wall 17.2 of the dirt guide channel 17.

[0109] The autonomous cleaning robot 2 also includes a lower deflector 18 positioned rearward of the brush rotation axis A1 and extending at least partially opposite the entrance opening of the dirt guiding channel 17.

[0110] 1-10, the lower deflector 18 is elongated and extends parallel to the brush rotation axis A1. Advantageously, the lower deflector 18 extends over the entire length of the rotating cleaning brush 7 and forms the rear edge 5.1 of the suction opening 5.

[0111] According to the embodiment shown in Figures 1-10, the distance between the first vertical plane including the leading edge of the lower deflector 18 and the second vertical plane including the trailing edge of the lower deflector 18 is less than the separation distance D1.

[0112] The lower deflector 18 partially defines the suction chamber 6 and comprises a lower deflection surface 19 configured to deflect dirt thrown by the rotating cleaning brush 7 rearward onto the lower deflection surface 19 upwards and towards the dirt guiding channel 17. Advantageously, the lower deflection surface 19 is flat.

[0113] The lower deflection surface 19 is configured to be inclined backward and upward and, when the autonomous cleaning robot 2 is at rest on a horizontal surface, to be inclined at an inclination angle comprised between 20-55°, advantageously between 25-45°, with respect to the horizontal surface, for example, approximately 37°.

[0114] The autonomous cleaning robot 2 further includes an upper deflector 21 that extends at least partially opposite the outlet opening of the dirt guiding channel 17. Advantageously, the lower deflector 18 and the upper deflector 21 are positioned at least partially opposite each other.

[0115] The upper deflector 21 includes an upper deflection surface 22 configured to deflect debris exiting upward from the debris guide channel 17 rearward and toward the bottom of the debris collection receptacle 16. The upper deflection surface 22 may, for example, be curved and have an aerodynamic shape, such as the shape of an aircraft wing. According to one variant of the invention, the upper deflection surface 22 could be flat and have a rearward and upward slope that is substantially the same as the slope of the lower deflection surface 19.

[0116] 1-10 , the autonomous cleaning robot 2 includes a partition wall 20 configured to at least partially separate the dirt guiding channel 17 and the dirt collection receptacle 16. The upper deflection surface 22 is positioned at a distance from the upper end of the partition wall 20 and together with the partition wall 20 defines a connecting passageway fluidly connecting the dirt guiding channel 17 to the dirt collection receptacle 16. Advantageously, the partition wall 20 extends from the bottom wall 16.1 of the dirt collection receptacle 16.

[0117] According to the embodiment shown in Figures 1-10, the suction chamber 6 includes a rear chamber wall 23 (see Figures 9 and 10) positioned opposite the rotating cleaning brush 7 and extending substantially parallel to the brush rotation axis A1. The rear chamber wall 23 is positioned at a separation distance D2 from a vertical plane P1 containing the brush rotation axis A1 and is configured to extend substantially vertically when the autonomous cleaning robot 2 is at rest on a horizontal plane. The separation distance D2 may be configured, for example, between 30-40 mm, e.g., approximately 34 mm. Advantageously, the downward deflector 18 extends to the rear chamber wall 23.

[0118] In the embodiment shown in FIGS. 1-10, the lower deflector 18, and thus the lower deflection surface 19, extends from the rear edge 5.1 of the suction port 5 to the rear chamber wall 23.

[0119] The ratio of the separation distance D1 to the minimum distance between the outer periphery of the rotating cleaning brush 7 and the rear chamber wall 23 is comprised between 1-2.5, advantageously between 1.5-2, for example about 1.7. In other words, the ratio of the separation distance D1 to the difference between the separation distance D2 and the brush radius R of the rotating cleaning brush 7 is comprised between 1-2.5, advantageously between 1.5-2.5, for example about 1.7.

[0120] As shown in Figure 7, the rear edge 5.1 of the suction port 5 is positioned at an edge distance D3 from a vertical plane P1 containing the brush rotation axis A1. Advantageously, the edge distance D3 also corresponds to the distance between the front edge of the lower deflector 18 and the vertical plane P1 containing the brush rotation axis A1. The separation distance D1 is greater than the difference between the separation distance D2 and the edge distance D3, but is smaller than the separation distance D2. Advantageously, the edge distance D3 is smaller than the brush radius R of the rotating cleaning brush 7. The edge distance D3 may be, for example, between 15-25 mm, e.g., about 19 mm.

[0121] According to the embodiment shown in Figures 1-10, the suction chamber 6 includes a dirt deflector 24 with a first deflector part 25 and a second deflector part 26 positioned on either side of the inlet opening of the dirt guiding channel 17. The first deflector part 25 and the second deflector part 26 include a first deflection surface 25.1 and a second deflection surface 26.1, respectively, configured to be directed towards the surface to be cleaned.

[0122] The first and second deflection surfaces 25.1, 26.1 are each positioned opposite the lower deflector 18, more particularly the lower deflection surface 19. Advantageously, the first and second deflection surfaces 25.1, 26.1 are each flat and extend transversely, e.g., perpendicularly, to the main direction of movement D of the autonomous cleaning robot 2. According to the embodiment shown in Figures 1-10, the first and second deflection surfaces 25.1, 26.1 each have a width measured parallel to the main direction of movement of the autonomous cleaning robot, which width increases towards the inlet opening of the dirt guiding channel 17.

[0123] The first deflection surface 25.1 is inclined so that the distance between the surface to be cleaned and the first deflection surface 25.1 increases from the first end of the rotary cleaning brush 7 towards the entrance opening of the dirt guiding channel 17, and the second deflection surface 26.1 is inclined so that the distance between the surface to be cleaned and the second deflection surface 26.1 increases from the second end of the rotary cleaning brush 7 towards the entrance opening of the dirt guiding channel 17.

[0124] Advantageously, each of the first deflection surface 25.1 and the second deflection surface 26.1 is configured to be inclined with respect to the horizontal plane at an inclination angle comprised between 2°-20°, advantageously between 2°-10°, for example about 5°, when the autonomous cleaning robot 2 is at rest on the horizontal plane.

[0125] The suction chamber 6 also includes a rear deflector 27 having a first rear deflector portion 28 and a second rear deflector portion 29 positioned on either side of the entrance opening of the dirt guide channel 17 and configured to extend substantially vertically when the autonomous cleaning robot 2 is at rest on a horizontal surface.

[0126] The first and second rear deflector portions 28, 29 each include a first rear deflection surface 28.1 and a second rear deflection surface 29.1 facing the rotating cleaning brush 7 and positioned on either side of the rear chamber wall 23. Advantageously, the first and second rear deflection surfaces 28.1, 29.1 are each substantially flat and extend to the rear chamber wall 23.

[0127] As shown in FIG. 10, the first rear deflection surface 28.1 is inclined so that the distance between the brush rotation axis A1 and the first rear deflection surface 28.1 increases from the first end of the rotary cleaning brush 7 towards the entrance opening of the dirt guide channel 17, and the second rear deflection surface 29.1 is inclined so that the distance between the brush rotation axis A1 and the second rear deflection surface 29.1 increases from the second end of the rotary cleaning brush 7 towards the entrance opening of the dirt guide channel 17.

[0128] Advantageously, each of the first and second rearward deflection surfaces 28.1, 29.1 is inclined relative to a plane perpendicular to the central longitudinal plane P of the body 3 at an inclination angle comprised between 2° and 20°, advantageously between 2° and 10°, for example about 4°.

[0129] The autonomous cleaning robot 2 also includes a power supply battery 31 configured to electrically power the autonomous cleaning robot 2. Advantageously, the power supply battery 31 is rechargeable and housed within the body 3.

[0130] 2, the autonomous cleaning robot 2 further comprises a wet cleaning device 32 arranged at the rear part 3.2 of the main body 3. Advantageously, the wet cleaning device 32 is arranged on the opposite side of the rotary cleaning brush 7 relative to the rotation axis of the drive wheel 11.

[0131] According to the embodiment shown in Figures 1 to 10, the wet cleaning device 32 comprises two mop holders 33 arranged side by side and positioned behind the rotation axes of the drive wheels 11. Advantageously, the two mop holders 33 are arranged on either side of the central longitudinal plane P of the main body 3 and are configured to extend substantially horizontally when the main body 3 is at rest on a horizontal surface.

[0132] Advantageously, the power battery 31 is positioned at least partially, for example completely, above one of the mop holders 33, and the suction unit 14 is positioned at least partially, for example completely, above the other of the mop holders 33. The suction unit 14 and the power battery 31 are therefore arranged on either side of the central longitudinal plane P of the main body 3.

[0133] 1-10 , the two mop holders 33 are each mounted to be translationally movable relative to the main body 3 in a translation direction T that extends transversely, advantageously perpendicularly, to the main direction of movement D of the autonomous cleaning robot 2. Advantageously, the mop holders 33 are mounted to be movable relative to each other between a close configuration in which the two mop holders 33 are close to each other, and a spaced configuration in which the two mop holders 33 are spaced apart from each other.

[0134] The wet cleaning device 32 also includes a translational drive mechanism 34 configured to translate the mop holders 33 alternately between a close arrangement and a spaced arrangement along the translational direction T. The translational drive mechanism 34 is thus configured to translate the two mop holders 33 in anti-phase translation. Advantageously, the translational drive mechanism 34 is at least partially positioned above the mop holders 33.

[0135] The wet cleaning device 32 further includes two mops 35 removably attached to the two mop holders 33. The mops 35 are configured to contact the surface to be cleaned when the autonomous cleaning robot 2 is placed on the surface to be cleaned, and more specifically, to exert a surface pressure on the surface to be cleaned.

[0136] Advantageously, the autonomous cleaning robot 2 is configured such that when the autonomous cleaning robot 2 rests on the surface to be cleaned, the rear of the autonomous cleaning robot 2 rests directly on the surface to be cleaned by the two mops 35.

[0137] 8, the wet cleaning device 32 is removably attached to the main body 3, which includes a storage housing 36 in which the wet cleaning device 32 is at least partially housed. The wet cleaning device 32 is advantageously configured to be removed from the main body 3 by a translational movement of the main body 3 directed toward the rear.

[0138] The autonomous cleaning robot 2 also includes a cleaning liquid tank 37, which is, for example, removably attached to the main body 3. Advantageously, the cleaning liquid tank 37 and the dirt collection container 16 are stacked on top of each other and integrated with each other. Thus, the autonomous cleaning robot 2 may include, for example, a removable tank including a first compartment forming the cleaning liquid tank 37 and a second compartment forming the dirt collection container 16. However, according to a variant of the invention, the cleaning liquid tank 37 could be separate from the dirt collection device 15 and could, for example, be provided directly in the wet cleaning device 32.

[0139] The wet cleaning device 32 further includes a plurality of liquid outlet orifices 38 configured to be fluidly connected to the cleaning liquid tank 37 and configured to supply cleaning liquid to a mop 35 attached to the mop holder 33. Advantageously, the liquid outlet orifices 38 are positioned forward of the mop holder 33, e.g., forward of the mop 35, and configured to be directed towards the surface to be cleaned.

[0140] The autonomous cleaning robot 2 also includes a cleaning fluid supply circuit (not described in detail) provided in the main body 3 and configured to fluidly connect the liquid outlet orifice 38 to the cleaning fluid tank 37. The cleaning fluid supply circuit may include, for example, a dispenser 39 (see FIG. 6 ) housed within the main body 3, among others.

[0141] FIG. 11 shows an autonomous cleaning robot 2 according to a second embodiment of the present invention, which differs from the first embodiment shown in FIGS. 1-10 mainly in that the upper deflection surface 22 of the upper deflector 21 has a radius of curvature and extends over less than a quarter of a circle, the cleaning liquid tank 37 is offset relative to the dirt collection container 16 so that the cleaning liquid tank 37 and the dirt collection container 16 are not stacked on top of each other, and the dirt collection container 16 is substantially flat and has an upper wall configured to extend horizontally when the autonomous cleaning robot 2 is at rest on a horizontal surface.

[0142] According to this embodiment of the invention, the upper deflection surface 22 is configured such that an inclined plane P2, which passes through a first intersection point 11 between the upper deflection surface 22 and a plane containing the front wall 17.1 of the dirt guiding channel 17 and a second intersection point 12 between the upper deflection surface 22 and a plane containing the rear wall 17.2 of the dirt guiding channel 17, is inclined rearward and upward and has an inclination relative to the horizontal that is substantially the same as the inclination relative to the horizontal of the lower deflection surface 19. Advantageously, the inclination of the inclined plane P2 is greater than the inclination of the lower deflection surface 19, the difference between the inclinations of the inclined plane P2 and the lower deflection surface 19 being less than 10°.

[0143] According to a variant of the invention not shown in the figures, the wet cleaning device 32 could be provided with floor treatment elements other than mopping, configured to perform mechanical, chemical, thermal or radiative treatment of the floor surface.

[0144] According to another variant of the invention, not shown in the figures, the wet cleaning device 32 could include at least one passive mop, i.e. a mop fixedly attached to the main body 3 .

[0145] According to yet another variation of the present invention, not shown in the figures, the autonomous cleaning robot 2 could lack the wet cleaning device 32 .

[0146] Of course, the invention is in no way limited to the described and illustrated embodiments which have been given as examples only: modifications remain possible, particularly in terms of the arrangement of the various elements or by substitution of technical equivalents, without departing from the scope of the invention.

Claims

1. An autonomous cleaning robot (2), comprising: a body (3) including a lower surface (4) configured to be directed towards a surface to be cleaned and a suction port (5) emerging from said lower surface (4) of said body (3), said body (3) defining a suction chamber (6) fluidly connected to said suction port (5); a rotary cleaning brush (7) accommodated in the suction chamber (6) and rotatably attached around a brush rotation axis (A1); a suction unit (14) at least partially housed within the body (3) and configured to generate an air flow through the suction port (5); a dust collection device (15) including a dust collection container (16) positioned at the rear of the suction chamber and upstream of the suction unit (14), the dust collection container (16) being configured to be traversed by the airflow generated by the suction unit (14) and to hold dust carried by the airflow; a dirt guide channel (17) fluidly connecting the suction chamber (6) to the dirt collection container (16), the dirt guide channel (17) having a generally cylindrical shape and configured to extend substantially vertically when the autonomous cleaning robot (2) is at rest on a horizontal surface; a lower deflector (18) positioned rearward of the brush rotation axis (A1) and extending at least partially opposite the inlet opening of the dirt guide channel (17), the lower deflector (18) having a lower deflection surface (19) partially defining the suction chamber (6), the lower deflection surface (19) being configured to deflect dirt thrown rearward onto the lower deflection surface (19) by the rotating cleaning brush (7) upward and towards the dirt guide channel (17); an upper deflector (21) extending at least partially opposite the outlet opening of the dirt guide channel (17), the upper deflector (21) having an upper deflection surface configured to deflect dirt exiting upward from the dirt guide channel (17) backward and toward the dirt collection receptacle (16).

2. 2. The autonomous cleaning robot (2) according to claim 1, wherein the lower deflector (18) is elongated and extends substantially parallel to the brush rotation axis (A1).

3. 3. The autonomous cleaning robot (2) according to claim 1 or 2, characterized in that the downward deflector (18) extends over substantially the entire length of the rotating cleaning brush (7).

4. 4. The autonomous cleaning robot (2) according to claim 1, wherein the lower deflector (18) forms the trailing edge (5.1) of the suction opening (5).

5. 5. The autonomous cleaning robot (2) according to claim 1, wherein the downward deflection surface (19) is configured to be tilted backward and upward and to be tilted at an angle of 20-50° relative to the horizontal when the autonomous cleaning robot (2) is at rest on a horizontal surface.

6. 6. The autonomous cleaning robot (2) according to claim 1, wherein the lower deflector (18) and the upper deflector (21) are positioned at least partially opposite each other.

7. 7. The autonomous cleaning robot (2) according to any one of claims 1 to 6, characterized in that the dirt guiding channel (17) emerges at the rear of the suction chamber (6).

8. 8. The autonomous cleaning robot (2) according to any one of claims 1 to 7, characterized in that the dirt guiding channel (17) has an elliptical cross section.

9. 9. The autonomous cleaning robot (2) according to any one of claims 1 to 8, characterized in that the body (3) has a central longitudinal plane (P) that intersects with the dirt guiding channel (17).

10. 10. The autonomous cleaning robot (2) according to any one of claims 1 to 9, characterized in that the dirt guiding channel (17) comprises a front wall (17.1) and a rear wall (17.2) that are substantially parallel to each other and spaced apart from each other by a separation distance (D1).

11. 11. The autonomous cleaning robot (2) according to any one of claims 1 to 10, wherein the suction chamber (6) includes a rear chamber wall (23) positioned opposite the rotating cleaning brush (7) and extending substantially parallel to the brush rotation axis (A1), the rear chamber wall (23) being positioned at a separation distance (D2) from a vertical plane (P1) containing the brush rotation axis (A1) and configured to extend substantially vertically when the autonomous cleaning robot (2) is at rest on a horizontal surface.

12. 12. The autonomous cleaning robot (2) according to claim 11, characterized in that the ratio of the maximum dimension of the dirt guiding channel (17) to the minimum distance between the outer periphery of the rotating cleaning brush (7) and the rear chamber wall (23), measured parallel to the main direction of movement (D) of the autonomous cleaning robot (2), is comprised between 1 and 2.

5.

13. 13. The autonomous cleaning robot (2) according to claim 11 or 12, characterized in that the rear edge (5.1) of the suction port (5) is positioned at an edge distance (D3) from the vertical plane (P1) containing the brush rotation axis (A1), and the edge distance (D3) is smaller than the separation distance (D2).

14. 14. The autonomous cleaning robot (2) according to claim 13, characterized in that the maximum dimension of the dirt guiding channel (17), measured parallel to the main direction of movement (D) of the autonomous cleaning robot (2), is greater than the difference between the separation distance (D2) and the edge distance (D3) and is smaller than the separation distance (D2).

15. The autonomous cleaning robot (2) according to any one of claims 1 to 14, wherein the suction chamber (6) comprises a dirt deflector (24) with a first deflector part (25) and a second deflector part (26) positioned on either side of the inlet opening of the dirt guiding channel (17), the first and second deflector parts (25, 26) respectively having a first deflection surface (25.1) and a second deflection surface (26.2) configured to be directed towards the surface to be cleaned. 26.1), wherein the first deflection surface (25.1) is inclined such that the distance between the surface to be cleaned and the first deflection surface (25.1) increases towards the entrance opening of the dirt guiding channel (17), and the second deflection surface (26.1) is inclined such that the distance between the surface to be cleaned and the second deflection surface (26.1) increases towards the entrance opening of the dirt guiding channel (17).

16. 16. The autonomous cleaning robot (2) according to claim 15, characterized in that each of the first and second deflection surfaces (25.1, 26.1) is positioned opposite the lower deflector (18).

17. 17. The autonomous cleaning robot (2) according to claim 15 or 16, wherein each of the first and second deflection surfaces (25.1, 26.1) is configured to be tilted at an inclination angle comprised between 2° and 20° with respect to the horizontal when the autonomous cleaning robot (2) is at rest on a horizontal surface.

18. The autonomous cleaning robot (2) according to any one of claims 1 to 17, wherein the suction chamber (6) includes a rear deflector (27) having a first rear deflector portion (28) and a second rear deflector portion (29) positioned on both sides of the inlet opening of the dirt guiding channel (17) and configured to extend substantially vertically when the autonomous cleaning robot (2) is at rest on a horizontal surface, and the first and second rear deflector portions (28, 29) each have a first rear deflection surface (29) facing the rotating cleaning brush (7).

1. An autonomous cleaning robot (2) comprising a brush (17) having a first rear deflection surface (28.1) and a second rear deflection surface (29.1), wherein the first rear deflection surface (28.1) is inclined such that the distance between the brush rotation axis (A1) and the first rear deflection surface (28.1) increases toward the entrance opening of the dirt guiding channel (17), and the second rear deflection surface (29.1) is inclined such that the distance between the brush rotation axis (A1) and the second rear deflection surface (29.1) increases toward the entrance opening of the dirt guiding channel (17).

19. 19. The autonomous cleaning robot (2) according to any one of claims 1 to 18, further comprising a wet cleaning device (32) including at least one mop holder (33) attached to the body (3) and at least one mop (35) removably attached to the at least one mop holder (33) and configured to contact a surface to be cleaned.

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