Suction head equipped with a rotating brush with a cleaning blade

Abstract

The suction head (2) comprises a main body (4); a rotating brush (11) housed in the main body (4) and comprising a brush body (12) configured to be rotated in a predetermined rotation direction and about a rotation axis, a row of bristles (14) provided on an outer peripheral surface of the brush body (12), and a cleaning blade (15) provided on the outer peripheral surface of the brush body (12), the cleaning blade (15) being angularly offset from the row of bristles (14) relative to a central longitudinal axis (A) of the brush body (12) by an offset angle and being located at the rear of the row of bristles (14) relative to the predetermined rotation direction of the brush body (12). Figure 7

Description

Title of the invention: Suction head equipped with a rotating brush provided with a cleaning blade Technical field

[0001] The present invention relates to the field of vacuum cleaners equipped with a suction head for sucking up dust and waste present on a surface to be cleaned. State of the art

[0002] Vacuum cleaners equipped with a suction head are well known on the market, these allowing surfaces to be cleaned by suction for the removal of dust and waste resting on them. The surface to be vacuumed can for example be tiles, parquet, laminate, carpet or a rug.

[0003] A suction head comprises, in a known manner, a main body comprising a sole provided with a lower face intended to be positioned adjacent to the surface to be vacuumed during use of the suction head, and a suction mouth opening into the lower face of the sole.

[0004] In order to improve the cleaning performance of a suction head, it is known to equip the latter with:

[0005] - a rotating brush comprising a brush body which is housed in a chamber suction delimited by the main body of the suction head and which is rotatable about an axis of rotation, a row of bristles provided on an outer peripheral surface of the brush body, and a protective strip provided on the outer peripheral surface of the brush body and located at the rear of the row of bristles, and

[0006] - a rotational drive device configured to rotate the brush body around the axis of rotation.

[0007] The row of bristles has the main function of scraping the floor to be cleaned, in particular when the floor to be cleaned is a soft floor, such as carpet or rug, while the protective strip has the function of limiting the entanglement of hair or similar waste around the brush body.

[0008] When the bristles of the row of bristles scrape a carpet, dust particles contained in the carpet are projected by the bristles of the row of bristles towards the suction inlet and are thus sucked up by the vacuum cleaner. After the scraping action carried out by the row of bristles, the carpet fibers, deformed by the row of bristles, return to their initial positions and project dust particles which then become suspended in the air.

[0009] Depending on the brush diameter of the rotating brush and the rotation speed of the rotating brush, the tangential speeds at the free ends of the bristles and the free end of the cleaning blade can be higher or lower.

[0010] Consequently, depending on the angle of offset between the row of bristles and the protective strip and the tangential speed at the free end of the cleaning strip, the dust particles, projected by the carpet fibers after the scraping action, are likely to fall back by gravity onto the floor before being carried by the protective strip towards the suction inlet or are likely to be projected into the air after the cleaning strip has passed, and therefore behind the protective strip.

[0011] Consequently, the cleaning performance of a vacuum cleaner of the aforementioned type proves to be insufficient. Summary of the invention

[0012] The present invention aims to remedy all or part of these drawbacks.

[0013] The technical problem underlying the invention consists in particular in providing a suction head which is of simple structure, while having increased cleaning performance.

[0014] To this end, the present invention relates to a suction head comprising:

[0015] - a main body comprising a lower face configured to be oriented towards a surface to be cleaned and a suction inlet opening into the lower face of the main body, the main body delimiting a suction chamber fluidly connected to the suction inlet,

[0016] - a rotating brush housed in the suction chamber, the rotating brush including:

[0017] • a brush body which has a central longitudinal axis and which is configured to be driven in rotation in a predetermined direction of rotation and around an axis of rotation substantially coaxial with the central longitudinal axis of the brush body, • a row of bristles provided on an outer peripheral surface of the brush body and extending over at least a portion of the length of the brush body, and • a cleaning slat provided on the outer peripheral surface of the brush body and extending over at least a portion of the length of the brush body, the cleaning slat being angularly offset from the row of bristles relative to the central longitudinal axis of the brush body by an offset angle and being located to the rear of the row of bristles relative to the predetermined direction of rotation of the brush body, and

[0018] - a rotational drive device configured to rotate the brush body around the axis of rotation.

[0019] The rotating brush has a brush diameter of between 0.03 and 0.08 m, and for example between 0.03 and 0.065 m, the rotation drive device is configured to rotate the brush body at a predetermined rotation speed of between 2000 and 8000 rpm, advantageously between 3000 and 5000 rpm and for example equal to approximately 4100 rpm, and a ratio of the offset angle, expressed in degrees, to a tangential speed, expressed in ms', at the free ends of the bristles of the row of bristles when the brush body is rotated at the predetermined rotation speed is between 2.5 and 3.5.

[0020] In this document, the term "brush diameter" means the external diameter of the rotating 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 rotating brush is inscribed.

[0021] To limit the size of the suction head and in particular to allow it to pass under most low furniture (beds, chests of drawers, coffee tables, etc.) the brush diameter is less than 0.08 m. Brush diameters less than 0.03 m do not allow the rotating brush to effectively collect waste lying on the surface to be cleaned. In this document, waste is also called dust particles.

[0022] Taking into account the aforementioned brush diameters, rotation speeds of the brush are between 2000 and 8000 rpm to achieve tangential speeds at the free ends of the bristles which allow the brush to efficiently collect waste lying on the surface to be cleaned and to allow projection of the collected waste towards a rear part of the suction chamber.

[0023] The present invention makes it possible to position the cleaning blade angularly and optimally relative to the row of bristles, taking into account the brush diameter and the speed of rotation of the brush, and therefore the tangential speed at the free ends of the bristles. The present invention therefore makes it possible for the cleaning blade to efficiently drive dust thrown into the air by the scraping action of the row of bristles towards the suction mouth, and therefore to significantly increase the quantity of dust sucked up by the suction head each time the latter passes over a predetermined area of ​​a surface to be cleaned.

[0024] If the offset angle of the cleaning blade relative to the row of bristles is too large compared to the tangential speed at the free ends of the bristles such that the ratio of the offset angle, expressed in degrees, to the tangential speed, expressed in ms', is greater than 3.5 does not allow the cleaning blade to capture enough volatile dust thrown into the air by the scraping action of the row of bristles. Indeed, in such a configuration, most of the volatile dust falls back to the ground before being captured by the cleaning blade.

[0025] If the offset angle of the cleaning blade relative to the row of bristles is, on the contrary, too small compared to the tangential speed at the free ends of the bristles, such that the ratio of the offset angle, expressed in degrees, to the tangential speed, expressed in ms', is less than 2.5, it also does not allow the cleaning blade to capture enough dust thrown into the air by the scraping action of the row of bristles. Indeed, in such a configuration, the cleaning blade is too close to the strip of bristles and most of the volatile dust, thrown into the air by the scraping action of the row of bristles, is thrown behind the cleaning blade, which consequently does not capture this volatile dust.

[0026] The specific positioning of the cleaning blade of the suction head according to the present invention therefore gives the latter increased cleaning performance.

[0027] The suction head may further have one or more of the following characteristics, taken alone or in combination.

[0028] According to one embodiment of the invention, the main body comprises a suction duct opening into the suction chamber, and for example into a rear part of the suction chamber.

[0029] According to one embodiment of the invention, the cleaning blade is configured to draw dust suspended in the air and located behind the row of bristles towards the suction mouth, and for example to draw said dust towards a rear part of the suction chamber.

[0030] According to one embodiment of the invention, the brush body has a generally tubular shape.

[0031] According to one embodiment of the invention, the offset angle is between 20 and 90°, advantageously between 25 and 55°, and for example between 32 and 46°. Such a positioning of the cleaning blade further promotes the entrainment of dust particles suspended in the air by the cleaning blade, and therefore gives the cleaning head according to the present invention even greater cleaning performance.

[0032] According to one embodiment of the invention, the tangential speed at the free ends of the bristles of the row of bristles, when the brush body is rotated at the predetermined rotation speed, is between 8 and 26 ms'. Such a tangential speed further promotes the entrainment of dust particles suspended in the air by the cleaning blade, and therefore gives the head of cleaning according to the present invention further increased cleaning performance.

[0033] Indeed, below a tangential speed of 8 ms', the dust particles collected by the rotating brush are not carried with sufficient velocity to allow them to reach the rear part of the suction chamber.

[0034] Above a tangential speed of 26 ms', the dust particles collected by the rotating brush bounce off, in particular, the walls of the rear part of the suction chamber without being able to be sucked up by the suction duct of the suction head.

[0035] According to one embodiment of the invention, the row of bristles extends helically around the central longitudinal axis of the brush body, and the cleaning strip extends helically around the central longitudinal axis of the brush body.

[0036] According to one embodiment of the invention, the row of bristles and the cleaning strip extend, relative to the central longitudinal axis of the brush body, at helix angles which are substantially identical.

[0037] According to one embodiment of the invention, the row of bristles and the cleaning blade are spaced apart from each other by a separation distance which is substantially constant along the row of bristles.

[0038] According to one embodiment of the invention, the cleaning blade is elastically deformable.

[0039] According to another embodiment of the invention, the cleaning blade could be rigid or semi-rigid.

[0040] According to one embodiment of the invention, the bristles of the row of bristles protrude from the outer peripheral surface of the brush body by a first protrusion distance, and the cleaning lamella protrudes from the outer peripheral surface of the brush body by a second protrusion distance which is less than the first protrusion distance. Typically the bristles of the row of bristles have a first protrusion distance of 4 to 10 mm, for example 8 mm, measured radially from the outer peripheral surface of the brush body, and the lamella has a second protrusion distance, less than the first protrusion distance, of 3 to 6 mm, for example 4 mm, measured radially from the outer peripheral surface of the brush body.

[0041] According to one embodiment of the invention, the bristles of the row of bristles are configured to interact with a surface to be cleaned, such as a soft floor, and in particular to scrub said surface to be cleaned, when the suction head is moved over said surface to be cleaned.

[0042] According to one embodiment of the invention, the cleaning blade is configured not to interact with a surface to be cleaned when the suction head is moved over said surface to be cleaned.

[0043] According to one embodiment of the invention, the bristles of the row of bristles are configured to protrude from the suction mouth.

[0044] According to one embodiment of the invention, the cleaning blade is configured to be located set back from the suction mouth.

[0045] According to one embodiment of the invention, the cleaning blade comprises a fixing part fixed, for example removably, to the brush body, and a cleaning part extending from the fixing part.

[0046] According to one embodiment of the invention, the cleaning portion is oriented substantially radially relative to the central longitudinal axis of the brush body.

[0047] According to one embodiment of the invention, the cleaning blade has a cross-section which is generally T-shaped.

[0048] According to one embodiment of the invention, the fixing part of the cleaning blade is fixed, for example removably, in a fixing groove provided on the outer peripheral surface of the brush body.

[0049] According to one embodiment of the invention, the bristles of the row of bristles extend substantially radially relative to the central longitudinal axis of the brush body.

[0050] According to one embodiment of the invention, the rotating brush comprises a fixing bar fixed, for example removably, to the brush body, the bristles of the row of bristles being fixed to the fixing bar.

[0051] According to one embodiment of the invention, the fixing bar is fixed, for example removably, in a bar groove provided on the external peripheral surface of the brush body.

[0052] According to one embodiment of the invention, the fixing bar and the row of bristles form a scraping member.

[0053] According to one embodiment of the invention, the rotating brush comprises several cleaning strips and several rows of bristles, the rows of bristles and the cleaning strips being alternated around the periphery of the brush body.

[0054] According to one embodiment of the invention, the rotation drive device comprises a drive motor coupled in rotation to the rotating brush.

[0055] According to one embodiment of the invention, the brush body delimits a motor housing in which the drive motor is housed.

[0056] According to one embodiment of the invention, the brush body is configured to be removably mounted in the suction chamber delimited by the main body, for example in a mounting direction which extends transversely, and preferably perpendicularly, to a direction of movement of the suction head.

[0057] According to one embodiment of the invention, the main body comprises a passage opening opening into the suction chamber and through which the brush body is adapted to be inserted into and removed from the suction chamber, and the suction head comprises a closing cap which is configured to close the passage opening, the brush body being rotatably mounted relative to the closing cap.

[0058] According to the embodiment of the invention, the passage opening is provided on a lateral face of the main body.

[0059] According to one embodiment of the invention, the suction mouth has an elongated shape and extends transversely, and for example perpendicularly, to the direction of movement of the suction head.

[0060] The present invention further relates to a method of controlling a suction head, comprising the steps of:

[0061] - provide a suction head comprising:

[0062] a main body comprising a lower face configured to be oriented towards a surface to be cleaned and a suction mouth opening into the lower face of the main body, the main body delimiting a suction chamber fluidly connected to the suction mouth,

[0063] a rotating brush housed in the suction chamber, the rotating brush having a brush diameter of between 0.03 and 0.08 m, advantageously between 0.03 and 0.065 m, and for example equal to 0.06 m, and comprising a brush body which has a central longitudinal axis and which is configured to be rotated in a predetermined direction of rotation and around an axis of rotation substantially coaxial with the central longitudinal axis of the brush body, a row of bristles provided on an outer peripheral surface of the brush body and extending over at least a portion of the length of the brush body, and a cleaning strip provided on the outer peripheral surface of the brush body and extending over at least a portion of the length of the brush body,the cleaning blade being angularly offset from the row of bristles relative to the central longitudinal axis of the brush body by an offset angle and being located to the rear of the row of bristles relative to the predetermined direction of rotation of the brush body, and,

[0064] a rotational drive device configured to rotate the brush body about the rotational axis,

[0065] - rotating the brush body at a predetermined rotational speed between 2000 and 8000 rpm, the brush diameter and the predetermined rotational speed being defined such that a ratio of the offset angle, expressed in degrees, to a tangential speed at the free ends of the bristles of the row of bristles, expressed in ms', is between 2.5 and 3.5. Brief description of the figures

[0066] In any case, the invention will be better understood with the aid of the description which follows with reference to the appended schematic drawings representing, by way of non-limiting example, an embodiment of this suction head.

[0067] [Fig.l] is a partial three-quarter front view of a suction head according to the present invention.

[0068] [Fig.2] is a partial three-quarter front view of the suction head of [Fig.l].

[0069] [Fig.3] is a perspective view of a rotating brush of the suction head of [Fig.l],

[0070] [Fig.4] is a perspective view of the rotating brush of [Fig.3].

[0071] [Fig.5] is a partial three-quarter front view of the suction head of the [Fig.l].

[0072] [Fig.6] is a longitudinal sectional view of the suction head of [Fig.l].

[0073] [Fig.7] is a cross-sectional view of the suction head of [Fig.l]. Detailed description

[0074] Figures 1 to 7 show a suction head 2 comprising a connection sleeve 3 to which a tip of a rigid or flexible tube is intended to be connected, itself connected to a suction system of a vacuum cleaner (not shown). Various variants of vacuum cleaners already exist on the market and can be used with the suction head 2 according to the invention; these variants being known to those skilled in the art, they are not detailed in the present patent application.

[0075] The suction head 2 comprises a main body 4 configured to be moved over a surface to be cleaned. The connecting sleeve 3 is advantageously mounted in a pivot connection relative to the main body 4 so as to allow the main body 4 to pivot forwards and backwards when the suction head 2 moves in a direction of movement DI.

[0076] The main body 4 comprises a sole 5 provided with a lower face 6 configured to be oriented towards the surface to be cleaned, and a suction mouth 7 opening onto the lower face 6. The suction mouth 7 may for example have an elongated shape and extend transversely, and for example perpendicularly, to the direction of movement DI of the suction head 2.

[0077] The main body 4 further comprises a suction chamber 8 which opens into the lower face 6 of the sole 5 via the suction mouth 7, and which is fluidically connected to the connecting sleeve 3 in particular by means of a suction duct 9, which may for example be formed at least in part by a flexible connecting duct. Advantageously, the suction duct 9 opens into a rear part of the suction chamber 8.

[0078] The suction head 2 also comprises a rotating brush 11 which has a brush diameter of between 0.03 and 0.08 m, and for example between 0.03 and 0.065 m. The rotating brush 11 comprises a brush body 12 which has a generally tubular shape and which has a central longitudinal axis A. Advantageously, the brush body 12 is cylindrical with a circular section. The brush body 12 is mounted to rotate in the suction chamber 8 about an axis of rotation which is substantially coaxial with the central longitudinal axis A of the brush body 12, and is configured to be driven in rotation in a predetermined direction of rotation, which is shown diagrammatically in [Fig.7] by an arrow rotating in the counterclockwise direction.

[0079] Advantageously, the brush body 12 is removably mounted in the suction chamber 8 and is configured to be inserted into and removed from the suction chamber 8 in a mounting direction D2. The mounting direction D2 extends transversely, and preferably perpendicularly, to the direction of movement DI of the suction head 2.

[0080] According to the embodiment shown in the figures, the main body 4 comprises a passage opening 13 opening into the suction chamber 8 and through which the brush body 12 can be introduced into and removed from the suction chamber 8. Advantageously, the passage opening 13 is provided on a lateral face of the main body 4.

[0081] According to the embodiment shown in the figures, the rotating brush 11 comprises several rows of bristles 14, for example two rows of bristles, provided on an external peripheral surface of the brush body 12, and several cleaning strips 15, for example elastically deformable or rigid, provided on the external peripheral surface of the brush body 12. Advantageously, the rows of bristles 14 and the cleaning strips 15 are alternated around the periphery of the brush body 12. According to an alternative embodiment of the invention, the rotating brush 11 could however comprise a single row of bristles 14 and a single cleaning strip 15.

[0082] According to the embodiment shown in the figures, the rows of bristles 14 extend helically around the central longitudinal axis A of the brush body 12, and the cleaning strips 15 extend helically around the central longitudinal axis A of the brush body 12. Advantageously, the rows of bristles 14 and the cleaning strips 15 extend, relative to the central longitudinal axis A of the brush body 12, at helix angles which are substantially identical.

[0083] Each cleaning strip 15 is located at the rear of a respective row of bristles 14 relative to the predetermined direction of rotation of the brush body 12, and is more particularly configured to drive towards the suction mouth 7 dust raised by the respective row of bristles 14 and suspended behind the respective row of bristles 14. Advantageously, each cleaning strip cleaning 15 and the respective row of bristles 14 are spaced from each other by a separation distance which is substantially constant along the respective row of bristles 14.

[0084] Each cleaning strip 15 is angularly offset from the respective row of bristles 14, relative to the central longitudinal axis A of the brush body 12, by an offset angle a of between 20 and 90°, advantageously between 25 and 55°, and for example between 32 and 46°.

[0085] According to the embodiment shown in the figures, the bristles of each row of bristles 14 protrude from the outer peripheral surface of the brush body 12 by a first protrusion distance, and each cleaning strip 15 protrudes from the outer peripheral surface of the brush body 12 by a second protrusion distance which is less than the first protrusion distance. In other words, each cleaning strip 15 has a height less than the height of the bristles of the respective row of bristles 14.

[0086] According to the embodiment shown in the figures, the bristles of each row of bristles 14 are configured to interact with a surface to be cleaned when the suction head 2 is moved over said surface to be cleaned, and each cleaning strip 15 is configured not to interact with a surface to be cleaned when the suction head 2 is moved over said surface to be cleaned. For this purpose, the bristles of each row of bristles 14 could be configured to protrude from the suction mouth 7, while each cleaning strip 15 could be configured to be located set back from the suction mouth 7.

[0087] According to the embodiment shown in the figures, each cleaning strip 15 has a cross-section which is generally T-shaped, and comprises a fixing part 15.1 fixed, for example removably, in a fixing groove provided on the outer peripheral surface of the brush body 12, and a cleaning part 15.2 which extends from the respective fixing part 15.1. Advantageously, the cleaning part 15.2 of each cleaning strip 15 is oriented substantially radially relative to the central longitudinal axis A of the brush body 12.

[0088] According to the embodiment shown in the figures, the bristles of each row of bristles 14 extend substantially radially relative to the central longitudinal axis A of the brush body 12, and are fixed to a respective fixing bar 16 fixed, for example removably, in a respective bar groove provided on the outer peripheral surface of the brush body 12.

[0089] The suction head 2 further comprises a closing cap 17 which is configured to close the passage opening 13 when the brush body 12 is mounted in the suction chamber 8.

[0090] The suction head 2 also comprises a rotation drive device 18 configured to rotate the brush body 12 around the rotation axis and at a predetermined rotation speed of between 2000 and 8000 rpm, and for example between 3000 and 5000 rpm. The offset angle a is advantageously between 32 and 46° when the rotation speed is equal to 4100 rpm and the brush diameter is equal to 0.06 m.

[0091] The predetermined rotational speed and the brush diameter are more particularly defined such that a ratio of the offset angle a, expressed in degrees, to a tangential speed, expressed in ms', at the free ends of the bristles of each row of bristles 14, when the brush body 12 is rotated at the predetermined rotational speed, is between 2.5 and 3.5. The tangential speed at the free ends of the bristles of each row of bristles 14, when the brush body 12 is rotated at the predetermined rotational speed, may for example be between 8 and 26 ms'.

[0092] The rotation drive device 18 more particularly comprises a drive motor 19, preferably electric, coupled in rotation to the rotating brush 11. According to the embodiment shown in the figures, the drive motor 19 comprises an output shaft which is substantially collinear with the axis of rotation of the brush body 12, and the drive motor 19 is housed in the brush body 12. Advantageously, the rotating brush 11 comprises a first end portion 11.1 configured to be supported by a support element provided on the main body 4 and mounted to be movable in rotation relative to the support element, and a second end portion 11.2 supported by the closing cap 17 and mounted to be movable in rotation relative to the closing cap 17.

[0093] In an alternative embodiment of the invention, the drive motor 19 could be arranged in the suction head 2 outside the rotating brush 11. According to this alternative, the output shaft of the drive motor 19 could be coupled to the rotating brush 11 for example by a gear chain or by a belt which is for example of the toothed type.

[0094] Of course, the present invention is in no way limited to the embodiment described and illustrated, which has been given only as an example. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Claims

1. Suction head (2) comprising: - a main body (4) comprising a lower face (6) configured to be oriented towards a surface to be cleaned and a suction mouth (7) opening into the lower face (6) of the main body (4), the main body (4) delimiting a suction chamber (8) fluidly connected to the suction mouth (7), - a rotating brush (11) housed in the suction chamber (8), the rotating brush (11) comprising: • a brush body (12) which has a central longitudinal axis (A) and which is configured to be driven in rotation in a predetermined direction of rotation and around an axis of rotation substantially coaxial with the central longitudinal axis (A) of the brush body (12), • a row of bristles (14) provided on an outer peripheral surface of the brush body (12) and extending over at least a portion of the length of the brush body (12), and • a cleaning slat (15) provided on the outer peripheral surface of the brush body (12) and extending over at least a portion of the length of the brush body (12), the cleaning slat (15) being angularly offset from the row of bristles (14) relative to the central longitudinal axis (A) of the brush body (12) by an offset angle and being located at the rear of the row of bristles (14) relative to the predetermined direction of rotation of the brush body (12), and - a rotational drive device (18) configured to rotate the brush body (12) about the rotational axis, characterized in that the rotating brush (11) has a brush diameter of between 0.03 and 0.08 m, in that the rotational drive device (18) is configured to rotate the brush body (12) at a predetermined rotational speed of between 2000 and 8000 rpm, and in that a ratio of the offset angle, expressed in degrees, to a tangential speed, expressed in ms', at the free ends of the bristles of the row of bristles (14) when the brush body (12) is rotated at the speed of predetermined rotation is between 2.5 and 3.

5.

2. Suction head (2) according to claim 1, wherein the offset angle is between 20 and 90°.

3. Suction head (2) according to claim 1 or 2, wherein the tangential speed at the free ends of the bristles of the row of bristles (14), when the brush body (12) is rotated at the predetermined rotational speed, is between 8 ms 1 and 26 ms '.

4. A suction head (2) according to any one of claims 1 to 3, wherein the row of bristles (14) extends helically around the central longitudinal axis (A) of the brush body (12), and the cleaning strip (15) extends helically around the central longitudinal axis (A) of the brush body (12).

5. Suction head (2) according to claim 4, wherein the row of bristles (14) and the cleaning strip (15) extend, relative to the central longitudinal axis (A) of the brush body (12), at helix angles which are substantially identical.

6. A suction head (2) according to any one of claims 1 to 5, wherein the row of bristles (14) and the cleaning blade (15) are spaced apart from each other by a separation distance which is substantially constant along the row of bristles (14).

7. Suction head (2) according to any one of claims 1 to 6, wherein the cleaning blade (15) is elastically deformable.

8. The suction head (2) according to any one of claims 1 to 7, wherein the bristles of the row of bristles (14) protrude from the outer peripheral surface of the brush body (12) by a first protrusion distance, and the cleaning blade (15) protrudes from the outer peripheral surface of the brush body (12) by a second protrusion distance which is less than the first protrusion distance.

9. A suction head (2) according to any one of claims 1 to 8, wherein the cleaning blade (15) comprises a fixing portion (15.1) fixed, for example removably, to the brush body (12), and a cleaning portion (15.2) extending from the fixing portion (15.1).

10. Suction head (2) according to claim 9, wherein the cleaning portion (15.2) is oriented substantially radially relative to the central longitudinal axis (A) of the brush body (12).

11. A suction head (2) according to any one of claims 1 to 10, wherein the rotating brush (11) comprises a plurality of slats of cleaning (15) and several rows of bristles, the rows of bristles and the cleaning slats (15) being alternated around the periphery of the brush body (12).

12. A method of controlling a suction head (2), comprising the steps of: - provide a suction head (2) comprising: • a main body (4) comprising a lower face (6) configured to be oriented towards a surface to be cleaned and a suction mouth (7) opening into the lower face (6) of the main body (4), the main body (4) delimiting a suction chamber (8) fluidly connected to the suction mouth (7), • a rotating brush (11) housed in the suction chamber (8), the rotating brush (11) having a brush diameter of between 0.03 and 0.08 m, and comprising a brush body (12) which has a central longitudinal axis (A) and which is configured to be rotated in a predetermined direction of rotation and around an axis of rotation substantially coaxial with the central longitudinal axis (A) of the brush body (12), a row of bristles (14) provided on an outer peripheral surface of the brush body (12) and extending over at least a portion of the length of the brush body (12), and a cleaning strip (15) provided on the outer peripheral surface of the brush body (12) and extending over at least a portion of the length of the brush body (12),the cleaning blade (15) being angularly offset from the row of bristles (14) relative to the central longitudinal axis (A) of the brush body (12) by an offset angle and being located at the rear of the row of bristles (14) relative to the predetermined direction of rotation of the brush body (12), and, • a rotation drive device (18) configured to rotate the brush body (12) around the rotation axis, - rotate the brush body (12) at a rotation speed predetermined between 2000 and 8000 rpm, the brush diameter and the predetermined rotation speed being defined such that a ratio of the offset angle, expressed in degrees, to a tangential speed at the free ends of the bristles of the row of bristles (14), expressed in ms', is between 2.5 and 3.5.

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