EP4311464A1 - Suction head comprising a sole provided with a curved front sliding surface - Google Patents

Suction head comprising a sole provided with a curved front sliding surface Download PDF

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Publication number
EP4311464A1
EP4311464A1 EP23187874.5A EP23187874A EP4311464A1 EP 4311464 A1 EP4311464 A1 EP 4311464A1 EP 23187874 A EP23187874 A EP 23187874A EP 4311464 A1 EP4311464 A1 EP 4311464A1
Authority
EP
European Patent Office
Prior art keywords
sliding surface
suction head
front sliding
suction
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23187874.5A
Other languages
German (de)
French (fr)
Inventor
Christelle PHILIPPE
Jean Damien VIVIER
Virginie ROSSO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEB SA
Original Assignee
SEB SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Publication of EP4311464A1 publication Critical patent/EP4311464A1/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0461—Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0466—Rotating tools

Definitions

  • the present invention relates to the field of vacuum cleaners equipped with a suction head making it possible to suck up dust and waste present on a surface to be cleaned.
  • Vacuum cleaners equipped with a suction head are well known on the market, these allowing surfaces to be cleaned by suction to remove dust and waste resting on them.
  • the surface to be vacuumed can, for example, be tiles, parquet, laminate, carpet or a rug.
  • a suction head comprises a sole provided with a lower face configured to be oriented towards a surface to be cleaned, and with a suction mouth opening into the lower face of the sole, the lower face of the sole comprising a front sliding surface and a rear sliding surface located on either side of the suction mouth.
  • the front sliding surface is more particularly configured to guide towards the suction mouth waste, such as grains of rice or lentils, encountered by the sole during forward movement of the suction head
  • the rear sliding surface is more particularly configured to guide towards the suction mouth waste, such as grains of rice or lentils, encountered by the sole during movement towards the rear of the suction head. suction.
  • each of the front and rear sliding surfaces is generally flat and inclined relative to the horizontal when the suction head rests on a horizontal surface.
  • the ground clearance at the front edge of the front sliding surface may prove to be too small to allow passage of the suction head over the waste encountered by the suction head. suction when moving towards the advance of the latter on a hard floor, so that this waste is then pushed by the suction head without being sucked up by the suction mouth.
  • the present invention aims to remedy all or part of these drawbacks.
  • the technical problem underlying the invention consists in particular of providing a suction head which is simple and reliable in structure, while having increased cleaning performance regardless of the type of floor cleaned with the suction head.
  • the present invention relates to a suction head comprising a sole provided with a lower face configured to be oriented towards a surface to be cleaned, and with a suction mouth opening into the lower face of the sole, the lower face of the sole comprising a front sliding surface which is located in front of the suction mouth, the front sliding surface having a front edge and a rear edge which are offset relative to each other according to a main direction of movement of the suction head, the front edge of the front sliding surface being raised relative to the rear edge of the sliding surface forward sliding when the vacuum head rests on a horizontal surface.
  • the front sliding surface is convex and is curved from the rear edge of the front sliding surface and towards the front edge of the front sliding surface, the front sliding surface having a radius of curvature of between 30 and 120 mm, advantageously between 65 and 85 mm and for example approximately 74 mm, and a tangent to the front sliding surface and passing through the rear edge of the front sliding surface extends substantially horizontally when the suction head rests on a horizontal surface.
  • Such a configuration of the front sliding surface and in particular the fact that the tangent is substantially horizontal at the level of the rear edge of the front sliding surface, gives the suction head according to the present invention improved suction performance on soft floor, such as a rug or carpet.
  • the specific configuration of the sliding surface improves the seal between the sole and the soft floor to be cleaned by generating a slight suction effect at the level of the suction mouth, which makes it possible to concentrate the suction to the right of the suction mouth and thus suck up dust located deep in the soft ground.
  • a maximum radius of curvature of 120 mm is imposed for the front sliding surface in order to avoid creating too great a seal at the level of the suction mouth.
  • a radius of curvature greater than 120 mm combined with a substantially horizontal tangent at the level of the front edge of the suction mouth, would generate too significant a suction effect at the level of the suction mouth and would make it difficult to maneuverability of the suction head resting for example on a carpet (in other words, the effort in moving forward would be too great for the user).
  • the curved profile of the front sliding surface allows the suction head to easily pass over waste encountered by the suction head when moving the latter forward and on a hard floor, while giving the suction head an improved seal compared to that given by a front sliding surface which would be flat and inclined relative to the horizontal and which would have the same ability to pass over waste encountered by the suction head when moving forward.
  • the front sliding surface according to the present invention makes it possible to balance two phenomena: the air intake of the suction head and its ability to pass over the waste.
  • the specific configuration of the front sliding surface according to the present invention therefore gives the suction head increased maneuverability and increased cleaning performance on hard ground and on soft ground.
  • the suction head may also have one or more of the following characteristics, taken alone or in combination.
  • the rear edge of the front sliding surface is the front edge of the suction mouth.
  • the tangent extends horizontally when the suction head rests on a horizontal surface.
  • the tangent is inclined relative to the horizontal by a tangent angle less than or equal to 3°, and advantageously less than or equal to 1°, when the suction head rests on a horizontal surface.
  • the tangent and the horizontal define a tangent angle less than or equal to 3°, and advantageously less than or equal to 1°.
  • the suction mouth has an elongated shape and extends in an extension direction.
  • the direction of extension extends substantially perpendicular to the main direction of movement of the suction head.
  • the front and rear edges of the front sliding surface are substantially parallel to each other.
  • the front and rear edges of the front sliding surface extend substantially parallel to the direction of extension of the suction mouth.
  • the front and rear edges of the front sliding surface are offset vertically relative to each other.
  • the front sliding surface is configured to guide waste, such as grains of rice or lentils, encountered by the sole during forward movement of the head. suction, towards the suction mouth.
  • waste such as grains of rice or lentils
  • the front edge of the front sliding surface and the rear edge of the front sliding surface are offset vertically relative to each other by an offset distance greater than 3 mm.
  • an orthogonal projection of the leading edge of the leading sliding surface onto a reference plane which is vertical and which extends perpendicular to the principal direction of travel of the suction head and an orthogonal projection of the rear edge of the front sliding surface on the reference plane are spaced from each other by an offset distance greater than 3 mm.
  • Such a configuration of the front sliding surface ensures optimal passage of the suction head over waste encountered by the suction head when the latter moves forward and on a hard floor.
  • the front sliding surface is configured such that, when the suction head rests on a horizontal surface, the rear edge of the front sliding surface is located at a distance from said surface. horizontal.
  • Such a configuration of the suction head, and more particularly the fact that the rear edge of the front sliding surface is configured to be located at a distance from the surface to be cleaned prevents the front sliding surface from rubbing the floor, avoids the generation of an excessively strong suction effect at the level of the suction mouth and ensures that the suction head passes over the waste encountered by the suction head when the latter moves on a hard floor and therefore effective suction of this waste at the suction mouth.
  • the distance is preferably predetermined and is for example between 0.3 and 5 mm, and advantageously between 0.5 and 2 mm.
  • a maximum distance of 5 mm, and preferably less than 2 mm avoids excessive air passages in front of the suction mouth and ensures sufficient depression to ensure effective suction of waste and ensure suction performance. suitable for the suction head.
  • a minimum distance of 0.3 mm, and preferably greater than 0.5 mm makes it possible to avoid too great a suction effect, particularly on hard floors, which would make it difficult to maneuver the suction head.
  • the front edge of the front sliding surface and the rear edge of the front sliding surface are offset relative to each other, according to the main direction of movement of the head suction, with a separation distance less than 40 mm.
  • a separation distance less than 40 mm.
  • Such a configuration of the front sliding surface makes it possible to limit the pressure losses generated by the flow of the air sucked between the front sliding surface and the ground, while allowing the suction mouth to be located at closer to a wall when the suction head is moved along said wall, which further increases the cleaning performance of the suction head.
  • the front sliding surface is configured such that, when the suction head rests on a horizontal surface, a plane of inclination passing through the front and rear edges of the surface of front sliding is inclined relative to the horizontal by an angle of inclination between 6 and 30°, and advantageously 6 and 15°.
  • Such a configuration of the front sliding surface ensures easy sliding of the waste under the front sliding surface during forward movement of the suction head. Indeed, with an angle of inclination above 30°, the waste slides with difficulty under the front sliding surface, and with an inclination angle below 6°, i.e.
  • the ground clearance at the level of the front edge of the front sliding surface is too small to allow the suction head to pass over the waste encountered by the suction head when moving the latter forward, or the radius of curvature is too large and the suction effect generated at the level of the suction mouth is too large, or the suction mouth is too far from the front edge of the sole, which does not allow effective suction of waste located along a wall.
  • a ratio of the radius of curvature to the offset distance is between 3 and 30.
  • a radius of curvature which is at least three times greater than the offset distance it is possible to comply with the condition that the angle of inclination of the aforementioned inclination plane must be less than 30°, and with a radius of curvature which is less than thirty times the offset distance, it is possible to comply with the condition that the angle of inclination of the aforementioned inclination plane must be greater than 6°.
  • the separation distance is greater than 15 mm.
  • Such a configuration of the front sliding surface ensures easy sliding of the waste under the front sliding surface when moving the suction head forward, while ensuring satisfactory sealing at the sliding surface.
  • the separation distance is advantageously greater than 15 mm to make it possible to obtain an angle of inclination of the aforementioned inclination plane which is less than 30° and a radius of curvature which is greater than 30 mm, and therefore for ensure easy sliding of waste under the front sliding surface and optimal sealing between the sole and soft ground.
  • the front sliding surface extends from a front edge of the suction mouth.
  • the radius of curvature of the front sliding surface is constant from the rear edge of the front sliding surface and to the front edge of the front sliding surface.
  • the front sliding surface is formed by a portion of cylindrical surface whose central longitudinal axis is substantially parallel to the direction of extension of the suction mouth.
  • the central longitudinal axis is substantially horizontal when the suction head rests on a horizontal surface.
  • the radius of curvature of the front sliding surface could be variable between the rear edge of the front sliding surface and the front edge of the front sliding surface.
  • the front sliding surface extends over an angular sector having a sector angle of between 30 and 60°, and advantageously between 35 and 55° and for example approximately 43°.
  • the front sliding surface extends to a front edge of the sole.
  • the front sliding surface extends over the entire length of the suction mouth, and for example from a first lateral edge of the sole to a second lateral edge of the sole opposite the first lateral edge.
  • the junction between the rear edge of the front sliding surface and the front edge of the suction mouth forms a front scraping edge.
  • the lower face of the sole comprises a rear sliding surface located at the rear of the suction mouth.
  • the rear sliding surface extends from a rear edge of the suction mouth.
  • the rear sliding surface is flat and is inclined relative to the horizontal by an angle of inclination of between 6 and 30° when the suction head rests on a horizontal surface .
  • the rear sliding surface extends over the entire length of the suction mouth, and for example from the first side edge of the sole to the second side edge of the sole.
  • the sole comprises support surfaces configured to be in contact with the floor to be cleaned.
  • the support surfaces are formed at least partly by support rollers.
  • the suction head further comprises a rotating brush housed in a suction chamber which is fluidly connected to the suction mouth, the rotating brush 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.
  • the suction head comprises a suction conduit opening into the suction chamber, and for example into a rear part of the suction chamber.
  • THE figures 1 to 8 represent a suction head 2 comprising a connection sleeve 3 to which is intended to be connected a tip of a rigid or flexible tube, itself connected to a suction system of a vacuum cleaner (not illustrated).
  • a vacuum cleaner not illustrated
  • FIG. 1 A perspective view of a suction head 2
  • FIG. 1 A perspective view of a suction head 2
  • FIG. 1 A perspective view of a suction head 2
  • connection sleeve 3 to which is intended to be connected a tip of a rigid or flexible tube, itself connected to a suction system of a vacuum cleaner (not illustrated).
  • 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.
  • the suction head 2 comprises a main body 4 configured to be moved over a surface to be cleaned.
  • the connection sleeve 3 is advantageously mounted in pivot connection relative to the main body 4 so as to allow pivoting of the main body 4 forwards and backwards during movement of the suction head 2 according to a main direction of movement D1.
  • 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 with a suction mouth 7 opening onto the lower face 6 of the sole 5.
  • the suction mouth 7 can for example have an elongated shape and extend in a direction of extension which is perpendicular to the main direction of movement D1 of the suction head 2.
  • 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 fluidly connected to the connection sleeve 3 in particular by means of a conduit suction 9, which can for example be formed at least in part by a flexible connecting conduit.
  • a conduit suction 9 which can for example be formed at least in part by a flexible connecting conduit.
  • the suction conduit 9 opens into a rear part of the suction chamber 8.
  • the suction head 2 also comprises a rotating brush 11 comprising a brush body 12 which has a generally tubular shape and which has a central longitudinal axis A.
  • the brush body 12 is mounted movable in rotation in the suction chamber 8 around an axis of rotation which is substantially coaxial with the central longitudinal axis A of the brush body 12, and is configured to be rotated in a predetermined direction of rotation, which is shown schematically on the Figure 7 by an arrow rotating counterclockwise.
  • the brush body 12 is removably mounted in the suction chamber 8 and is configured to be introduced into and removed from the suction chamber 8 in a mounting direction D2 which advantageously extends perpendicularly to the main movement direction D1 of the suction head 2.
  • 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.
  • the passage opening 13 is provided on a side face of the main body 4.
  • 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 blades 15, for example elastically deformable or rigid, provided on the external peripheral surface of the brush body 12.
  • the rows of bristles 14 and the cleaning strips 15 are alternated around the periphery of the brush body 12.
  • the rotating brush 11 could however comprise a single row of bristles 14 and a single cleaning blade 15, or even be devoid of a row of bristles 14 or a cleaning blade 15.
  • Each cleaning blade 15 is located at the rear of a respective row of bristles 14 with respect 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 being in suspension behind the respective row of bristles 14.
  • Each cleaning blade 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 ⁇ of between 20 and 90°, advantageously between 25 and 55 °, and for example between 32 and 46°.
  • the suction head 2 further comprises a closing plug 17 which is configured to close the passage opening 13 when the brush body 12 is mounted in the suction chamber 8.
  • the suction head 2 also comprises a rotation drive device 18 configured to rotate the brush body 12 around the axis of rotation and at a rotation speed for example between 2000 and 8000 rpm.
  • the rotation drive device 18 more particularly comprises a drive motor 19, preferably electric, coupled in rotation to the rotating brush 11.
  • the drive motor 19 comprises a shaft output 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.
  • the drive motor 19 could be arranged in the suction head 2 outside the rotating brush 11.
  • 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.
  • the lower face 6 of the sole 5 comprises a front sliding surface 21 which is located at the front of the suction mouth 7, and a rear sliding surface 22 which is located at the rear of the suction mouth suction 7.
  • the front sliding surface 21 extends from a front edge of the suction mouth 7 and towards a front edge of the sole 5 (and for example up to the front edge of the sole 5), and the surface of rear sliding 22 extends from a rear edge of the suction mouth 7 and towards a rear edge of the sole 5.
  • the front sliding surface 21 is more particularly configured to guide towards the suction mouth 7 waste, such as grains of rice or lentils, encountered by the sole 5 during a forward movement of the head d suction 2, while the rear sliding surface 22 is more particularly configured to guide towards the suction mouth 7 waste, such as grains of rice or lentils, encountered by the sole 5 during movement towards the rear of the suction head 2.
  • the front sliding surface 21 extends over the entire length of the suction mouth 7, and for example from a first side edge of the sole 5 to a second side edge of the sole 5 opposite at the first side edge.
  • the rear sliding surface 22 extends over the entire length of the suction mouth 7, and for example from the first side edge of the sole 5 to the second side edge of the sole 5.
  • the rear sliding surface 22 is flat and is inclined relative to the horizontal by an angle of inclination of between 6 and 30° when the suction head 2 rests on a horizontal surface.
  • the rear sliding surface 22 is more particularly inclined towards the rear and upwards.
  • the front sliding surface 21 has a front edge 21.1 and a rear edge 21.2 which are parallel to each other and which extend parallel to the direction of extension of the suction mouth 7.
  • the front and rear edges 21.1, 21.2 of the front sliding surface 21 are offset relative to each other, in the main direction of movement D1 of the suction head 2, by a separation distance Di1 included between 15mm and 40mm.
  • Di1 included between 15mm and 40mm.
  • the front edge 21.1 of the front sliding surface 21 is raised relative to the rear edge 21.2 of the front sliding surface 21 when the suction head 2 rests on a horizontal surface, and the front and rear edges 21.1, 21.2 of the front sliding surface 21 are offset vertically relative to each other by an offset distance Di2 greater than 3 mm and advantageously less than or equal to 10 mm.
  • an orthogonal projection of the front edge 21.1 of the front sliding surface 21 on a reference plane which is vertical and which extends perpendicular to the direction main displacement D1 of the suction head 2 and an orthogonal projection of the rear edge 21.2 of the front sliding surface 21 on the reference plane are spaced from each other by an offset distance Di2 greater than 3 mm and advantageously less than or equal to 10 mm.
  • the front sliding surface 21 is configured such that, when the suction head 2 rests on a horizontal surface, the rear edge 21.2 of the front sliding surface 21 is located at a predetermined distance from said surface.
  • horizontal which is between 0.5 and 2 mm.
  • the rear edge 21.2 of the front sliding surface 21 is the front edge of the suction mouth 7.
  • the front sliding surface 21 is also configured such that, when the suction head 2 rests on a horizontal surface, an inclination plane P passing through the front and rear edges 21.1, 21.2 of the front sliding surface 21 is inclined relative to the horizontal by an angle of inclination between 6 and 30°, and advantageously 6 and 15°.
  • the front sliding surface 21 is convex and is curved from the rear edge 21.2 of the front sliding surface 21 and towards the front edge 21.1 of the front sliding surface 21.
  • the front sliding surface 21 has a radius of curvature R between 30 and 120 mm, advantageously between 65 and 85 mm and for example approximately 74 mm, and extends over an angular sector having a sector angle of between 30 and 60°, and advantageously between 35 and 55° and for example around 43°.
  • a ratio of the radius of curvature R to the offset distance Di2 can for example be between 3 and 30.
  • the radius of curvature R of the front sliding surface 21 is constant from the rear edge 21.2 of the front sliding surface 21 and to the front edge 21.1 of the front sliding surface 21 , so that the front sliding surface 21 is formed by a portion of cylindrical surface whose central longitudinal axis is parallel to the direction of extension of the suction mouth 7 and extends horizontally when the head of suction 2 rests on a horizontal surface.
  • the front sliding surface 21 is more particularly configured such that a tangent T to the front sliding surface 21 and passing through the rear edge 21.2 of the front sliding surface 21 extends horizontally when the suction head 2 rests on a horizontal surface.
  • the tangent T could be inclined relative to the horizontal by a tangent angle less than or equal to 3°, and advantageously less than or equal to 1°, when the head of suction 2 rests on a horizontal surface.
  • the present invention is in no way limited to the embodiment described and illustrated which has been given only by way of example. Modifications remain possible, particularly 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.
  • the lower face 6 could include, at the front or behind the front sliding surface 21, a flat intermediate surface which could be horizontal or inclined relative to the horizontal when the suction head 2 rests on a horizontal surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

La tête d'aspiration (2) comprend une semelle (5) munie d'une face inférieure (6) et d'une bouche d'aspiration (7) débouchant dans la face inférieure (6), la face inférieure (6) comprenant une surface de glissement avant (21) située à l'avant de la bouche d'aspiration (7) et présentant un bord arrière (21.2) et un bord avant (21.2) qui est surélevé par rapport au bord arrière (21.2). La surface de glissement avant (21) est courbée depuis le bord arrière (21.2) de la surface de glissement avant (21) et en direction du bord avant (21.1) de la surface de glissement avant (21) et présente un rayon de courbure (R) compris entre 30 et 120 mm. Une tangente à la surface de glissement avant (21) et passant par le bord arrière (21.2) de la surface de glissement avant (21) s'étend sensiblement horizontalement lorsque la tête d'aspiration (2) repose sur une surface horizontale.The suction head (2) comprises a sole (5) provided with a lower face (6) and a suction mouth (7) opening into the lower face (6), the lower face (6) comprising a front sliding surface (21) located in front of the suction mouth (7) and having a rear edge (21.2) and a front edge (21.2) which is raised relative to the rear edge (21.2). The front sliding surface (21) is curved from the rear edge (21.2) of the front sliding surface (21) and towards the front edge (21.1) of the front sliding surface (21) and has a radius of curvature (R) between 30 and 120 mm. A tangent to the front sliding surface (21) and passing through the rear edge (21.2) of the front sliding surface (21) extends substantially horizontally when the suction head (2) rests on a horizontal surface.

Description

Domaine techniqueTechnical area

La présente invention concerne le domaine des aspirateurs équipés d'une tête d'aspiration permettant d'aspirer les poussières et les déchets présents sur une surface à nettoyer.The present invention relates to the field of vacuum cleaners equipped with a suction head making it possible to suck up dust and waste present on a surface to be cleaned.

Etat de la techniqueState of the art

Les aspirateurs équipés d'une tête d'aspiration sont bien connus sur le marché, ceux-ci permettant de nettoyer des surfaces par aspiration pour l'évacuation des poussières et des déchets reposant sur celles-ci. La surface à aspirer peut par exemple être du carrelage, du parquet, du stratifié, de la moquette ou un tapis.Vacuum cleaners equipped with a suction head are well known on the market, these allowing surfaces to be cleaned by suction to remove dust and waste resting on them. The surface to be vacuumed can, for example, be tiles, parquet, laminate, carpet or a rug.

De façon connue, une tête d'aspiration comprend une semelle munie d'une face inférieure configurée pour être orientée vers une surface à nettoyer, et d'une bouche d'aspiration débouchant dans la face inférieure de la semelle, la face inférieure de la semelle comprenant une surface de glissement avant et une surface de glissement arrière situées de part et d'autre de la bouche d'aspiration.In known manner, a suction head comprises a sole provided with a lower face configured to be oriented towards a surface to be cleaned, and with a suction mouth opening into the lower face of the sole, the lower face of the sole comprising a front sliding surface and a rear sliding surface located on either side of the suction mouth.

La surface de glissement avant est plus particulièrement configurée pour guider vers la bouche d'aspiration des déchets, tels que des grains de riz ou des lentilles, rencontrés par la semelle lors d'un déplacement vers l'avant de la tête d'aspiration, tandis que la surface de glissement arrière est plus particulièrement configurée pour guider vers la bouche d'aspiration des déchets, tels que des grains de riz ou des lentilles, rencontrés par la semelle lors d'un déplacement vers l'arrière de la tête d'aspiration.The front sliding surface is more particularly configured to guide towards the suction mouth waste, such as grains of rice or lentils, encountered by the sole during forward movement of the suction head, while the rear sliding surface is more particularly configured to guide towards the suction mouth waste, such as grains of rice or lentils, encountered by the sole during movement towards the rear of the suction head. suction.

Afin de guider des déchets rencontrés par la semelle vers la bouche d'aspiration, chacune des surfaces de glissement avant et arrière est généralement plane et inclinée par rapport à l'horizontale lorsque la tête d'aspiration repose sur une surface horizontale.In order to guide waste encountered by the sole towards the suction mouth, each of the front and rear sliding surfaces is generally flat and inclined relative to the horizontal when the suction head rests on a horizontal surface.

Bien qu'une telle configuration notamment de la surface de glissement avant assure un passage aisé de la tête d'aspiration sur des déchets, tels que des grains de riz ou des lentilles, lors d'un déplacement vers l'avant de la tête d'aspiration sur un sol dur, l'étanchéité entre la surface de glissement et le sol à nettoyer peut s'avérer être insuffisante, notamment lors d'un déplacement de la tête d'aspiration sur un sol mou, ce qui peut nuire aux performances d'aspiration de la tête d'aspiration sur sol mou.Although such a configuration, in particular of the front sliding surface, ensures easy passage of the suction head over waste, such as rice grains or lentils, during forward movement of the suction head. suction on a hard floor, the seal between the sliding surface and the floor to be cleaned may prove to be insufficient, particularly when moving the suction head on a soft floor, which may affect performance suction of the suction head on soft ground.

Pour pallier cet inconvénient, il peut être envisagé de réduire l'angle d'inclinaison de la surface de glissement avant par rapport à l'horizontale afin d'assurer une meilleure étanchéité entre la surface de glissement avant et le sol à nettoyer et donc des performances de nettoyage accrue sur sol mou. Cependant, dans un tel cas, la garde au sol au niveau du bord avant de la surface de glissement avant peut s'avérer être trop petite pour permettre un passage de la tête d'aspiration au-dessus des déchets rencontrés par la tête d'aspiration lors d'un déplacement vers l'avance de cette dernière sur un sol dur, de telle sorte que ces déchets sont alors poussés par la tête d'aspiration sans être aspirés par la bouche d'aspiration.To overcome this drawback, it can be considered to reduce the angle of inclination of the front sliding surface relative to the horizontal in order to ensure better sealing between the front sliding surface and the floor to be cleaned and therefore increased cleaning performance on soft floors. However, in such a case, the ground clearance at the front edge of the front sliding surface may prove to be too small to allow passage of the suction head over the waste encountered by the suction head. suction when moving towards the advance of the latter on a hard floor, so that this waste is then pushed by the suction head without being sucked up by the suction mouth.

Résumé de l'inventionSummary of the invention

La présente invention vise à remédier à tout ou partie de ces inconvénients.The present invention aims to remedy all or part of these drawbacks.

Le problème technique à la base de l'invention consiste notamment à fournir une tête d'aspiration qui soit de structure simple et fiable, tout en présentant des performances de nettoyage accrues quel que soit le type de sol nettoyer avec la tête d'aspiration.The technical problem underlying the invention consists in particular of providing a suction head which is simple and reliable in structure, while having increased cleaning performance regardless of the type of floor cleaned with the suction head.

A cet effet, la présente invention concerne une tête d'aspiration comprenant une semelle munie d'une face inférieure configurée pour être orientée vers une surface à nettoyer, et d'une bouche d'aspiration débouchant dans la face inférieure de la semelle, la face inférieure de la semelle comprenant une surface de glissement avant qui est située à l'avant de la bouche d'aspiration, la surface de glissement avant présentant un bord avant et un bord arrière qui sont décalés l'un par rapport à l'autre selon une direction de déplacement principale de la tête d'aspiration, le bord avant de la surface de glissement avant étant surélevé par rapport au bord arrière de la surface de glissement avant lorsque la tête d'aspiration repose sur une surface horizontale.For this purpose, the present invention relates to a suction head comprising a sole provided with a lower face configured to be oriented towards a surface to be cleaned, and with a suction mouth opening into the lower face of the sole, the lower face of the sole comprising a front sliding surface which is located in front of the suction mouth, the front sliding surface having a front edge and a rear edge which are offset relative to each other according to a main direction of movement of the suction head, the front edge of the front sliding surface being raised relative to the rear edge of the sliding surface forward sliding when the vacuum head rests on a horizontal surface.

La surface de glissement avant est convexe et est courbée depuis le bord arrière de la surface de glissement avant et en direction du bord avant de la surface de glissement avant, la surface de glissement avant présentant un rayon de courbure compris entre 30 et 120 mm, avantageusement entre 65 et 85 mm et par exemple d'environ 74 mm, et une tangente à la surface de glissement avant et passant par le bord arrière de la surface de glissement avant s'étend sensiblement horizontalement lorsque la tête d'aspiration repose sur une surface horizontale.The front sliding surface is convex and is curved from the rear edge of the front sliding surface and towards the front edge of the front sliding surface, the front sliding surface having a radius of curvature of between 30 and 120 mm, advantageously between 65 and 85 mm and for example approximately 74 mm, and a tangent to the front sliding surface and passing through the rear edge of the front sliding surface extends substantially horizontally when the suction head rests on a horizontal surface.

Une telle configuration de la surface de glissement avant, et notamment le fait que la tangente soit sensiblement horizontale au niveau du bord arrière de la surface de glissement avant, confère à la tête d'aspiration selon la présente invention des performances d'aspiration améliorées sur sol mou, tel qu'un tapis ou une moquette. En effet, la configuration spécifique de la surface de glissement améliore l'étanchéité entre la semelle et le sol mou à nettoyer en générant un léger effet ventouse au niveau de la bouche d'aspiration, ce qui permet de concentrer l'aspiration au droit de la bouche d'aspiration et ainsi d'aspirer des poussières situées en profondeur dans le sol mou.Such a configuration of the front sliding surface, and in particular the fact that the tangent is substantially horizontal at the level of the rear edge of the front sliding surface, gives the suction head according to the present invention improved suction performance on soft floor, such as a rug or carpet. In fact, the specific configuration of the sliding surface improves the seal between the sole and the soft floor to be cleaned by generating a slight suction effect at the level of the suction mouth, which makes it possible to concentrate the suction to the right of the suction mouth and thus suck up dust located deep in the soft ground.

En outre, un rayon de courbure maximal de 120 mm est imposé pour la surface de glissement avant de manière à éviter de créer une étanchéité trop importante au niveau de la bouche d'aspiration. En effet, un rayon de courbure supérieur à 120 mm, combiné à une tangente sensiblement horizontale au niveau de l'arête avant de la bouche d'aspiration, générerait un effet ventouse trop important au niveau de la bouche d'aspiration et rendrait difficile la maniabilité de la tête d'aspiration reposant par exemple sur un tapis (en d'autres termes, l'effort à l'avancement serait trop important pour l'utilisateur).In addition, a maximum radius of curvature of 120 mm is imposed for the front sliding surface in order to avoid creating too great a seal at the level of the suction mouth. Indeed, a radius of curvature greater than 120 mm, combined with a substantially horizontal tangent at the level of the front edge of the suction mouth, would generate too significant a suction effect at the level of the suction mouth and would make it difficult to maneuverability of the suction head resting for example on a carpet (in other words, the effort in moving forward would be too great for the user).

De plus, le profil courbé de la surface de glissement avant permet à la tête d'aspiration de passer facilement sur des déchets rencontrés par la tête d'aspiration lors d'un déplacement de cette dernière vers l'avant et sur un sol dur, tout en conférant à la tête d'aspiration une étanchéité améliorée par rapport à celle conférée par une surface de glissement avant qui serait plane et inclinée par rapport à l'horizontale et qui aurait la même capacité à passer sur des déchets rencontrés par la tête d'aspiration lors d'un déplacement vers l'avant. Ainsi, la surface de glissement avant selon la présente invention permet d'équilibrer deux phénomènes : la prise d'air de la tête d'aspiration et son aptitude à passer sur les déchets.In addition, the curved profile of the front sliding surface allows the suction head to easily pass over waste encountered by the suction head when moving the latter forward and on a hard floor, while giving the suction head an improved seal compared to that given by a front sliding surface which would be flat and inclined relative to the horizontal and which would have the same ability to pass over waste encountered by the suction head when moving forward. Thus, the front sliding surface according to the present invention makes it possible to balance two phenomena: the air intake of the suction head and its ability to pass over the waste.

En conséquence, la configuration spécifique de la surface de glissement avant selon la présente invention confère donc à la tête d'aspiration une maniabilité accrue et des performances de nettoyage accrues sur sol dur et sur sol mou.Consequently, the specific configuration of the front sliding surface according to the present invention therefore gives the suction head increased maneuverability and increased cleaning performance on hard ground and on soft ground.

A défaut de stipulation contraire, le terme « sensiblement » signifie, dans le présent document, « exactement ou à 5% ou à 5° près ».Unless otherwise stipulated, the term “substantially” means, in this document, “exactly or within 5% or within 5°”.

La tête d'aspiration peut en outre présenter une ou plusieurs des caractéristiques suivantes, prises seules ou en combinaison.The suction head may also have one or more of the following characteristics, taken alone or in combination.

Avantageusement, le bord arrière de la surface de glissement avant est l'arête avant de la bouche d'aspiration.Advantageously, the rear edge of the front sliding surface is the front edge of the suction mouth.

Selon un mode de réalisation de l'invention, la tangente s'étend horizontalement lorsque la tête d'aspiration repose sur une surface horizontale.According to one embodiment of the invention, the tangent extends horizontally when the suction head rests on a horizontal surface.

Selon un autre mode de réalisation de l'invention, la tangente est inclinée par rapport à l'horizontale d'un angle de tangente inférieur ou égal à 3°, et avantageusement inférieur ou égal 1°, lorsque la tête d'aspiration repose sur une surface horizontale. En d'autres termes, lorsque la tête d'aspiration repose sur une surface horizontale, la tangente et l'horizontale définissent un angle de tangente inférieur ou égal à 3°, et avantageusement inférieur ou égal 1°.According to another embodiment of the invention, the tangent is inclined relative to the horizontal by a tangent angle less than or equal to 3°, and advantageously less than or equal to 1°, when the suction head rests on a horizontal surface. In other words, when the suction head rests on a horizontal surface, the tangent and the horizontal define a tangent angle less than or equal to 3°, and advantageously less than or equal to 1°.

Selon un mode de réalisation de l'invention, la bouche d'aspiration présente une forme allongée et s'étend selon une direction d'extension. De façon avantageuse, la direction d'extension s'étend sensiblement perpendiculairement à la direction de déplacement principale de la tête d'aspiration.According to one embodiment of the invention, the suction mouth has an elongated shape and extends in an extension direction. Advantageously, the direction of extension extends substantially perpendicular to the main direction of movement of the suction head.

Selon un mode de réalisation de l'invention, les bords avant et arrière de la surface de glissement avant sont sensiblement parallèles l'un par rapport à l'autre. De façon avantageuse, les bords avant et arrière de la surface de glissement avant s'étendent sensiblement parallèlement à la direction d'extension de la bouche d'aspiration.According to one embodiment of the invention, the front and rear edges of the front sliding surface are substantially parallel to each other. Advantageously, the front and rear edges of the front sliding surface extend substantially parallel to the direction of extension of the suction mouth.

Selon un mode de réalisation de l'invention, les bords avant et arrière de la surface de glissement avant sont décalés verticalement l'un par rapport à l'autre.According to one embodiment of the invention, the front and rear edges of the front sliding surface are offset vertically relative to each other.

Selon un mode de réalisation de l'invention, la surface de glissement avant est configurée pour guider des déchets, tels que des grains de riz ou des lentilles, rencontrés par la semelle lors d'un déplacement vers l'avant de la tête d'aspiration, vers la bouche d'aspiration.According to one embodiment of the invention, the front sliding surface is configured to guide waste, such as grains of rice or lentils, encountered by the sole during forward movement of the head. suction, towards the suction mouth.

Selon un mode de réalisation de l'invention, le bord avant de la surface de glissement avant et le bord arrière de la surface de glissement avant sont décalés verticalement l'un par rapport à l'autre d'une distance de décalage supérieure à 3 mm. En d'autres termes, lorsque la tête d'aspiration repose sur une surface horizontale, une projection orthogonale du bord avant de la surface de glissement avant sur un plan de référence qui est vertical et qui s'étend perpendiculairement à la direction de déplacement principale de la tête d'aspiration et une projection orthogonale du bord arrière de la surface de glissement avant sur le plan de référence sont espacées l'une de l'autre d'une distance de décalage supérieure à 3 mm.According to one embodiment of the invention, the front edge of the front sliding surface and the rear edge of the front sliding surface are offset vertically relative to each other by an offset distance greater than 3 mm. In other words, when the vacuum head rests on a horizontal surface, an orthogonal projection of the leading edge of the leading sliding surface onto a reference plane which is vertical and which extends perpendicular to the principal direction of travel of the suction head and an orthogonal projection of the rear edge of the front sliding surface on the reference plane are spaced from each other by an offset distance greater than 3 mm.

Une telle configuration de la surface de glissement avant permet d'assurer un passage optimal de la tête d'aspiration sur des déchets rencontrés par la tête d'aspiration lors d'un déplacement de cette dernière vers l'avant et sur un sol dur.Such a configuration of the front sliding surface ensures optimal passage of the suction head over waste encountered by the suction head when the latter moves forward and on a hard floor.

Selon un mode de réalisation de l'invention, la surface de glissement avant est configurée de telle sorte que, lorsque la tête d'aspiration repose sur une surface horizontale, le bord arrière de la surface de glissement avant est situé à distance de ladite surface horizontale. Une telle configuration de la tête d'aspiration, et plus particulièrement le fait que le bord arrière de la surface de glissement avant soit configuré pour être situé à distance de la surface à nettoyer, évite que la surface de glissement avant frotte le sol, évite la génération d'un effet ventouse trop important au niveau de la bouche d'aspiration et assure un passage de la tête d'aspiration au-dessus des déchets rencontrés par la tête d'aspiration lors d'un déplacement de cette dernière sur un sol dur et donc une aspiration efficace de ces déchets au niveau de la bouche d'aspiration. La distance est de préférence prédéterminée et est par exemple comprise entre 0,3 et 5 mm, et avantageusement entre 0,5 et 2 mm. Une distance maximale de 5 mm, et de préférence inférieure à 2 mm, évite des passages d'air trop importants devant la bouche d'aspiration et permet de garantir une dépression suffisante pour assurer une aspiration efficace des déchets et assurer des performances d'aspiration appropriées à la tête d'aspiration. Une distance minimale de 0,3 mm, et de préférence supérieure à 0,5 mm, permet d'éviter un effet ventouse trop important, notamment sur sol dur, qui rendrait difficile la maniabilité de la tête d'aspiration.According to one embodiment of the invention, the front sliding surface is configured such that, when the suction head rests on a horizontal surface, the rear edge of the front sliding surface is located at a distance from said surface. horizontal. Such a configuration of the suction head, and more particularly the fact that the rear edge of the front sliding surface is configured to be located at a distance from the surface to be cleaned, prevents the front sliding surface from rubbing the floor, avoids the generation of an excessively strong suction effect at the level of the suction mouth and ensures that the suction head passes over the waste encountered by the suction head when the latter moves on a hard floor and therefore effective suction of this waste at the suction mouth. The distance is preferably predetermined and is for example between 0.3 and 5 mm, and advantageously between 0.5 and 2 mm. A maximum distance of 5 mm, and preferably less than 2 mm, avoids excessive air passages in front of the suction mouth and ensures sufficient depression to ensure effective suction of waste and ensure suction performance. suitable for the suction head. A minimum distance of 0.3 mm, and preferably greater than 0.5 mm, makes it possible to avoid too great a suction effect, particularly on hard floors, which would make it difficult to maneuver the suction head.

Selon un mode de réalisation de l'invention, le bord avant de la surface de glissement avant et le bord arrière de la surface de glissement avant sont décalés l'un par rapport à l'autre, selon la direction de déplacement principale de la tête d'aspiration, d'une distance de séparation inférieure à 40 mm. En d'autres termes, lorsque la tête d'aspiration repose sur une surface horizontale, une projection orthogonale du bord avant de la surface de glissement avant sur la surface horizontale et une projection orthogonale du bord arrière de la surface de glissement avant sur la surface horizontale sont espacées l'une de l'autre d'une distance de séparation inférieure à 40 mm.According to one embodiment of the invention, the front edge of the front sliding surface and the rear edge of the front sliding surface are offset relative to each other, according to the main direction of movement of the head suction, with a separation distance less than 40 mm. In other words, when the suction head rests on a horizontal surface, an orthogonal projection of the leading edge of the front sliding surface onto the horizontal surface and an orthogonal projection of the trailing edge of the front sliding surface onto the surface horizontal are spaced from each other by a separation distance of less than 40 mm.

Une telle configuration de la surface de glissement avant permet de limiter les pertes de charge générées par l'écoulement de l'air aspiré entre la surface de glissement avant et le sol, tout en permettant à la bouche d'aspiration d'être située au plus près d'un mur lorsque la tête d'aspiration est déplacée le long dudit mur, ce qui permet d'accroître encore les performances de nettoyage de la tête d'aspiration.Such a configuration of the front sliding surface makes it possible to limit the pressure losses generated by the flow of the air sucked between the front sliding surface and the ground, while allowing the suction mouth to be located at closer to a wall when the suction head is moved along said wall, which further increases the cleaning performance of the suction head.

Selon un mode de réalisation de l'invention, la surface de glissement avant est configurée de telle sorte que, lorsque la tête d'aspiration repose sur une surface horizontale, un plan d'inclinaison passant par les bords avant et arrière de la surface de glissement avant est incliné par rapport à l'horizontale d'un angle d'inclinaison compris entre 6 et 30°, et avantageusement 6 et 15°. Une telle configuration de la surface de glissement avant assure un glissement aisé des déchets sous la surface de glissement avant lors d'un déplacement vers l'avant de la tête d'aspiration. En effet, avec un angle d'inclinaison au-dessus de 30°, les déchets glissent difficilement sous la surface de glissement avant, et avec un angle d'inclinaison en dessous de 6°, soit la garde au sol au niveau du bord avant de la surface de glissement avant est trop petite pour permettre à la tête d'aspiration de passer sur les déchets rencontrés par la tête d'aspiration lors d'un déplacement de cette dernière vers l'avant, soit le rayon de courbure est trop grand et l'effet ventouse généré au niveau de la bouche d'aspiration est trop important, soit la bouche d'aspiration est trop éloignée du bord avant de la semelle, ce qui ne permet pas une aspiration efficace de déchets situés le long d'un mur.According to one embodiment of the invention, the front sliding surface is configured such that, when the suction head rests on a horizontal surface, a plane of inclination passing through the front and rear edges of the surface of front sliding is inclined relative to the horizontal by an angle of inclination between 6 and 30°, and advantageously 6 and 15°. Such a configuration of the front sliding surface ensures easy sliding of the waste under the front sliding surface during forward movement of the suction head. Indeed, with an angle of inclination above 30°, the waste slides with difficulty under the front sliding surface, and with an inclination angle below 6°, i.e. the ground clearance at the level of the front edge of the front sliding surface is too small to allow the suction head to pass over the waste encountered by the suction head when moving the latter forward, or the radius of curvature is too large and the suction effect generated at the level of the suction mouth is too large, or the suction mouth is too far from the front edge of the sole, which does not allow effective suction of waste located along a wall.

Selon un mode de réalisation de l'invention, un rapport du rayon de courbure sur la distance de décalage est compris entre 3 et 30. Avec un rayon de courbure qui est au minimum trois fois supérieur à la distance de décalage, il est possible de respecter la condition selon laquelle l'angle d'inclinaison du plan d'inclinaison précité doit être inférieur à 30°, et avec un rayon de courbure qui est inférieur à trente fois la distance de décalage, il est possible de respecter la condition selon laquelle l'angle d'inclinaison du plan d'inclinaison précité doit être supérieur à 6°.According to one embodiment of the invention, a ratio of the radius of curvature to the offset distance is between 3 and 30. With a radius of curvature which is at least three times greater than the offset distance, it is possible to comply with the condition that the angle of inclination of the aforementioned inclination plane must be less than 30°, and with a radius of curvature which is less than thirty times the offset distance, it is possible to comply with the condition that the angle of inclination of the aforementioned inclination plane must be greater than 6°.

Selon un mode de réalisation de l'invention, la distance de séparation est supérieure à 15 mm. Une telle configuration de la surface de glissement avant assure un glissement aisé des déchets sous la surface de glissement avant lors d'un déplacement vers l'avant de la tête d'aspiration, tout en assurant une étanchéité satisfaisante au niveau de la surface de glissement avant. En effet, la distance de séparation est avantageusement supérieure à 15 mm pour permettre d'obtenir un angle d'inclinaison du plan d'inclinaison précité qui soit inférieur à 30° et un rayon de courbure qui soit supérieur à 30 mm, et donc pour assurer un glissement aisé de déchets sous la surface de glissement avant et une étanchéité optimale entre la semelle et un sol mou.According to one embodiment of the invention, the separation distance is greater than 15 mm. Such a configuration of the front sliding surface ensures easy sliding of the waste under the front sliding surface when moving the suction head forward, while ensuring satisfactory sealing at the sliding surface. Before. Indeed, the separation distance is advantageously greater than 15 mm to make it possible to obtain an angle of inclination of the aforementioned inclination plane which is less than 30° and a radius of curvature which is greater than 30 mm, and therefore for ensure easy sliding of waste under the front sliding surface and optimal sealing between the sole and soft ground.

Selon un mode de réalisation de l'invention, la surface de glissement avant s'étend depuis une arête avant de la bouche d'aspiration.According to one embodiment of the invention, the front sliding surface extends from a front edge of the suction mouth.

Selon un mode de réalisation de l'invention, le rayon de courbure de la surface de glissement avant est constant depuis le bord arrière de la surface de glissement avant et jusqu'au bord avant de la surface de glissement avant.According to one embodiment of the invention, the radius of curvature of the front sliding surface is constant from the rear edge of the front sliding surface and to the front edge of the front sliding surface.

Selon un mode de réalisation de l'invention, la surface de glissement avant est formée par une portion de surface cylindrique dont l'axe longitudinal central est sensiblement parallèle à la direction d'extension de la bouche d'aspiration. De façon avantageuse, l'axe longitudinal central est sensiblement horizontal lorsque la tête d'aspiration repose sur une surface horizontale.According to one embodiment of the invention, the front sliding surface is formed by a portion of cylindrical surface whose central longitudinal axis is substantially parallel to the direction of extension of the suction mouth. Advantageously, the central longitudinal axis is substantially horizontal when the suction head rests on a horizontal surface.

Selon un mode de réalisation de l'invention, le rayon de courbure de la surface de glissement avant pourrait être variable entre le bord arrière de la surface de glissement avant et le bord avant de la surface de glissement avant.According to one embodiment of the invention, the radius of curvature of the front sliding surface could be variable between the rear edge of the front sliding surface and the front edge of the front sliding surface.

Selon un mode de réalisation de l'invention, la surface de glissement avant s'étend sur un secteur angulaire ayant un angle de secteur compris entre 30 et 60°, et avantageusement entre 35 et 55° et par exemple d'environ 43°.According to one embodiment of the invention, the front sliding surface extends over an angular sector having a sector angle of between 30 and 60°, and advantageously between 35 and 55° and for example approximately 43°.

Selon un mode de réalisation de l'invention, la surface de glissement avant s'étend jusqu'à un bord avant de la semelle.According to one embodiment of the invention, the front sliding surface extends to a front edge of the sole.

Selon un mode de réalisation de l'invention, la surface de glissement avant s'étend sur toute la longueur de la bouche d'aspiration, et par exemple d'un premier bord latéral de la semelle jusqu'à un deuxième bord latéral de la semelle opposé au premier bord latéral.According to one embodiment of the invention, the front sliding surface extends over the entire length of the suction mouth, and for example from a first lateral edge of the sole to a second lateral edge of the sole opposite the first lateral edge.

Selon un mode de réalisation de l'invention, la jonction entre le bord arrière de la surface de glissement avant et l'arête avant de la bouche d'aspiration forme une arête de grattage avant.According to one embodiment of the invention, the junction between the rear edge of the front sliding surface and the front edge of the suction mouth forms a front scraping edge.

Selon un mode de réalisation de l'invention, la face inférieure de la semelle comporte une surface de glissement arrière située à l'arrière de la bouche d'aspiration. De façon avantageuse, la surface de glissement arrière s'étend à partir d'une arête arrière de la bouche d'aspiration.According to one embodiment of the invention, the lower face of the sole comprises a rear sliding surface located at the rear of the suction mouth. Advantageously, the rear sliding surface extends from a rear edge of the suction mouth.

Selon un mode de réalisation de l'invention, la surface de glissement arrière est plane et est inclinée par rapport à l'horizontale d'un angle d'inclinaison compris entre 6 et 30° lorsque la tête d'aspiration repose sur une surface horizontale.According to one embodiment of the invention, the rear sliding surface is flat and is inclined relative to the horizontal by an angle of inclination of between 6 and 30° when the suction head rests on a horizontal surface .

Selon un mode de réalisation de l'invention, la surface de glissement arrière s'étend sur toute la longueur de la bouche d'aspiration, et par exemple du premier bord latéral de la semelle jusqu'au deuxième bord latéral de la semelle.According to one embodiment of the invention, the rear sliding surface extends over the entire length of the suction mouth, and for example from the first side edge of the sole to the second side edge of the sole.

Selon un mode de réalisation de l'invention, la semelle comporte des surfaces d'appui configurées pour être en contact avec le sol à nettoyer. De façon avantageuse, les surfaces d'appui sont formées au moins en partie par des roulettes d'appui.According to one embodiment of the invention, the sole comprises support surfaces configured to be in contact with the floor to be cleaned. Advantageously, the support surfaces are formed at least partly by support rollers.

Selon un mode de réalisation de l'invention, la tête d'aspiration comporte en outre une brosse rotative logée dans une chambre d'aspiration qui est reliée fluidiquement à la bouche d'aspiration, la brosse rotative comprenant un corps de brosse qui présente un axe longitudinal central et qui est configuré pour être entraîné en rotation selon un sens de rotation prédéterminé et autour d'un axe de rotation sensiblement coaxial avec l'axe longitudinal central du corps de brosse.According to one embodiment of the invention, the suction head further comprises a rotating brush housed in a suction chamber which is fluidly connected to the suction mouth, the rotating brush 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.

Selon un mode de réalisation de l'invention, la tête d'aspiration comporte un conduit d'aspiration débouchant dans la chambre d'aspiration, et par exemple dans une partie arrière de la chambre d'aspiration.According to one embodiment of the invention, the suction head comprises a suction conduit opening into the suction chamber, and for example into a rear part of the suction chamber.

Brève description des figuresBrief description of the figures

De toute façon l'invention sera bien comprise à l'aide de la description qui suit en référence aux dessins schématiques annexés représentant, à titre d'exemple non limitatif, une forme d'exécution de cette tête d'aspiration.

  • La figure 1 est une vue partielle de trois-quarts avant d'une tête d'aspiration selon la présente invention.
  • La figure 2 est une vue partielle de trois-quarts avant de la tête d'aspiration de la figure 1.
  • La figure 3 est une vue en perspective d'une brosse rotative de la tête d'aspiration de la figure 1.
  • La figure 4 est une vue en perspective de la brosse rotative de la figure 3.
  • La figure 5 est une vue partielle de trois-quarts avant de la tête d'aspiration de la figure 1.
  • La figure 6 est une vue en coupe longitudinale de la tête d'aspiration de la figure 1.
  • La figure 7 est une vue en coupe transversale de la tête d'aspiration de la figure 1 montrant un organe d'étanchéité arrière dans une première configuration.
  • La figure 8 est une vue, à l'échelle agrandie, d'un détail de la figure 7.
In any case, the invention will be clearly understood with the help 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.
  • There figure 1 is a partial three-quarter front view of a suction head according to the present invention.
  • There figure 2 is a partial three-quarter front view of the suction head of the figure 1 .
  • There Figure 3 is a perspective view of a rotating brush suction head of the figure 1 .
  • There Figure 4 is a perspective view of the rotating brush of the Figure 3 .
  • There Figure 5 is a partial three-quarter front view of the suction head of the figure 1 .
  • There Figure 6 is a longitudinal sectional view of the suction head of the figure 1 .
  • There Figure 7 is a cross-sectional view of the suction head of the figure 1 showing a rear sealing member in a first configuration.
  • There figure 8 is a view, on an enlarged scale, of a detail of the Figure 7 .

Description détailléedetailed description

Les figures 1 à 8 représentent une tête d'aspiration 2 comprenant un manchon de raccordement 3 auquel est destiné à être raccordé un embout d'un tube rigide ou flexible, lui-même raccordé à un système d'aspiration d'un aspirateur (non illustré). Diverses variantes d'aspirateurs existent déjà sur le marché et pourront être utilisées avec la tête d'aspiration 2 selon l'invention ; ces variantes étant connues de l'homme du métier, elles ne sont pas détaillées dans la présente demande de brevet.THE figures 1 to 8 represent a suction head 2 comprising a connection sleeve 3 to which is intended to be connected a tip of a rigid or flexible tube, itself connected to a suction system of a vacuum cleaner (not illustrated). 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.

La tête d'aspiration 2 comprend un corps principal 4 configuré pour être déplacé sur une surface à nettoyer. Le manchon de raccordement 3 est avantageusement monté en liaison pivot par rapport au corps principal 4 de manière à permettre un pivotement du corps principal 4 vers l'avant et vers l'arrière lors d'un déplacement de la tête d'aspiration 2 selon une direction de déplacement principale D1.The suction head 2 comprises a main body 4 configured to be moved over a surface to be cleaned. The connection sleeve 3 is advantageously mounted in pivot connection relative to the main body 4 so as to allow pivoting of the main body 4 forwards and backwards during movement of the suction head 2 according to a main direction of movement D1.

Le corps principal 4 comprend une semelle 5 munie d'une face inférieure 6 configurée pour être orientée vers la surface à nettoyer, et d'une bouche d'aspiration 7 débouchant sur la face inférieure 6 de la semelle 5. La bouche d'aspiration 7 peut par exemple présenter une forme allongée et s'étendre selon une direction d'extension qui est perpendiculaire à la direction de déplacement principale D1 de la tête d'aspiration 2.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 with a suction mouth 7 opening onto the lower face 6 of the sole 5. The suction mouth 7 can for example have an elongated shape and extend in a direction of extension which is perpendicular to the main direction of movement D1 of the suction head 2.

Le corps principal 4 comprend en outre une chambre d'aspiration 8 qui débouche dans la face inférieure 6 de la semelle 5 via la bouche d'aspiration 7, et qui est reliée fluidiquement au manchon de raccordement 3 par le biais notamment d'un conduit d'aspiration 9, qui peut par exemple être formé au moins en partie par un conduit de liaison flexible. De façon avantageuse, le conduit d'aspiration 9 débouche dans une partie arrière de la chambre d'aspiration 8.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 fluidly connected to the connection sleeve 3 in particular by means of a conduit suction 9, which can for example be formed at least in part by a flexible connecting conduit. Advantageously, the suction conduit 9 opens into a rear part of the suction chamber 8.

La tête d'aspiration 2 comprend également une brosse rotative 11 comprenant un corps de brosse 12 qui a une forme globalement tubulaire et qui présente un axe longitudinal central A. Le corps de brosse 12 est monté mobile en rotation dans la chambre d'aspiration 8 autour d'un axe de rotation qui est sensiblement coaxial avec l'axe longitudinal central A du corps de brosse 12, et est configuré pour être entraîné en rotation selon un sens de rotation prédéterminé, qui est schématisé sur la figure 7 par une flèche tournant dans le sens anti-horaire.The suction head 2 also comprises a rotating brush 11 comprising a brush body 12 which has a generally tubular shape and which has a central longitudinal axis A. The brush body 12 is mounted movable in rotation in the suction chamber 8 around an axis of rotation which is substantially coaxial with the central longitudinal axis A of the brush body 12, and is configured to be rotated in a predetermined direction of rotation, which is shown schematically on the Figure 7 by an arrow rotating counterclockwise.

De façon avantageuse, le corps de brosse 12 est monté de manière amovible dans la chambre d'aspiration 8 et est configuré pour être introduit dans et retiré hors de la chambre d'aspiration 8 selon une direction de montage D2 qui s'étend avantageusement perpendiculairement à la direction de déplacement principale D1 de la tête d'aspiration 2.Advantageously, the brush body 12 is removably mounted in the suction chamber 8 and is configured to be introduced into and removed from the suction chamber 8 in a mounting direction D2 which advantageously extends perpendicularly to the main movement direction D1 of the suction head 2.

Selon le mode de réalisation représenté sur les figures, le corps principal 4 comporte une ouverture de passage 13 débouchant dans la chambre d'aspiration 8 et à travers laquelle le corps de brosse 12 peut être introduit dans et retiré hors de la chambre d'aspiration 8. De façon avantageuse, l'ouverture de passage 13 est prévue sur une face latérale du corps principal 4.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 side face of the main body 4.

Selon le mode de réalisation représenté sur les figures, la brosse rotative 11 comporte plusieurs rangées de poils 14, par exemple deux rangées de poils, prévues sur une surface périphérique externe du corps de brosse 12, et plusieurs lamelles de nettoyage 15, par exemple élastiquement déformables ou rigides, prévues sur la surface périphérique externe du corps de brosse 12. De façon avantageuse, les rangées de poils 14 et les lamelles de nettoyage 15 sont alternées sur le pourtour du corps de brosse 12. Selon une variante de réalisation de l'invention, la brosse rotative 11 pourrait cependant comporter une seule rangée de poils 14 et une seule lamelle de nettoyage 15, ou encore être dépourvue de rangée de poils 14 ou de lamelle de nettoyage 15.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 blades 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 blade 15, or even be devoid of a row of bristles 14 or a cleaning blade 15.

Chaque lamelle de nettoyage 15 est située à l'arrière d'une rangée de poils 14 respective par rapport au sens de rotation prédéterminé du corps de brosse 12, et est plus particulièrement configurée pour entraîner vers la bouche d'aspiration 7 des poussières soulevées par la rangée de poils 14 respective et se trouvant en suspension derrière la rangée de poils 14 respective.Each cleaning blade 15 is located at the rear of a respective row of bristles 14 with respect 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 being in suspension behind the respective row of bristles 14.

Chaque lamelle de nettoyage 15 est décalée angulairement de la rangée de poils 14 respective, par rapport à l'axe longitudinal central A du corps de brosse 12, d'un angle de décalage α compris entre 20 et 90°, avantageusement entre 25 et 55°, et par exemple entre 32 et 46°.Each cleaning blade 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 α of between 20 and 90°, advantageously between 25 and 55 °, and for example between 32 and 46°.

La tête d'aspiration 2 comporte en outre un bouchon de fermeture 17 qui est configuré pour fermer l'ouverture de passage 13 lorsque le corps de brosse 12 est monté dans la chambre d'aspiration 8.The suction head 2 further comprises a closing plug 17 which is configured to close the passage opening 13 when the brush body 12 is mounted in the suction chamber 8.

La tête d'aspiration 2 comporte également un dispositif d'entraînement en rotation 18 configuré pour entraîner en rotation le corps de brosse 12 autour de l'axe de rotation et à une vitesse de rotation par exemple comprise entre 2000 et 8000 tr/min.The suction head 2 also comprises a rotation drive device 18 configured to rotate the brush body 12 around the axis of rotation and at a rotation speed for example between 2000 and 8000 rpm.

Le dispositif d'entraînement en rotation 18 comprend plus particulièrement un moteur d'entraînement 19, de préférence électrique, couplé en rotation à la brosse rotative 11. Selon le mode de réalisation représenté sur les figures, le moteur d'entraînement 19 comprend un arbre de sortie qui est sensiblement colinéaire avec l'axe de rotation du corps de brosse 12, et le moteur d'entraînement 19 est logé dans le corps de brosse 12.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 a shaft output 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.

Dans une variante de réalisation de l'invention, le moteur d'entraînement 19 pourrait être est disposé dans la tête d'aspiration 2 en dehors de la brosse rotative 11. Selon cette variante, l'arbre de sortie du moteur d'entraînement 19 pourrait être couplé à la brosse rotative 11 par exemple par une chaîne d'engrenage ou par une courroie qui est par exemple de type crantée.In a variant embodiment of the invention, the drive motor 19 could be arranged in the suction head 2 outside the rotating brush 11. According to this variant, 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.

Comme montré plus particulièrement sur la figure 7, la face inférieure 6 de la semelle 5 comprend une surface de glissement avant 21 qui est située à l'avant de la bouche d'aspiration 7, et une surface de glissement arrière 22 qui est située à l'arrière de la bouche d'aspiration 7. De façon avantageuse, la surface de glissement avant 21 s'étend depuis une arête avant de la bouche d'aspiration 7 et en direction d'un bord avant de la semelle 5 (et par exemple jusqu'au bord avant de la semelle 5), et la surface de glissement arrière 22 s'étend à partir d'une arête arrière de la bouche d'aspiration 7 et en direction d'un bord arrière de la semelle 5.As shown more particularly on the Figure 7 , the lower face 6 of the sole 5 comprises a front sliding surface 21 which is located at the front of the suction mouth 7, and a rear sliding surface 22 which is located at the rear of the suction mouth suction 7. Advantageously, the front sliding surface 21 extends from a front edge of the suction mouth 7 and towards a front edge of the sole 5 (and for example up to the front edge of the sole 5), and the surface of rear sliding 22 extends from a rear edge of the suction mouth 7 and towards a rear edge of the sole 5.

La surface de glissement avant 21 est plus particulièrement configurée pour guider vers la bouche d'aspiration 7 des déchets, tels que des grains de riz ou des lentilles, rencontrés par la semelle 5 lors d'un déplacement vers l'avant de la tête d'aspiration 2, tandis que la surface de glissement arrière 22 est plus particulièrement configurée pour guider vers la bouche d'aspiration 7 des déchets, tels que des grains de riz ou des lentilles, rencontrés par la semelle 5 lors d'un déplacement vers l'arrière de la tête d'aspiration 2.The front sliding surface 21 is more particularly configured to guide towards the suction mouth 7 waste, such as grains of rice or lentils, encountered by the sole 5 during a forward movement of the head d suction 2, while the rear sliding surface 22 is more particularly configured to guide towards the suction mouth 7 waste, such as grains of rice or lentils, encountered by the sole 5 during movement towards the rear of the suction head 2.

De façon avantageuse, la surface de glissement avant 21 s'étend sur toute la longueur de la bouche d'aspiration 7, et par exemple d'un premier bord latéral de la semelle 5 jusqu'à un deuxième bord latéral de la semelle 5 opposé au premier bord latéral. De façon similaire, la surface de glissement arrière 22 s'étend sur toute la longueur de la bouche d'aspiration 7, et par exemple du premier bord latéral de la semelle 5 jusqu'au deuxième bord latéral de la semelle 5.Advantageously, the front sliding surface 21 extends over the entire length of the suction mouth 7, and for example from a first side edge of the sole 5 to a second side edge of the sole 5 opposite at the first side edge. Similarly, the rear sliding surface 22 extends over the entire length of the suction mouth 7, and for example from the first side edge of the sole 5 to the second side edge of the sole 5.

Selon le mode de réalisation de l'invention, la surface de glissement arrière 22 est plane et est inclinée par rapport à l'horizontale d'un angle d'inclinaison compris entre 6 et 30° lorsque la tête d'aspiration 2 repose sur une surface horizontale. La surface de glissement arrière 22 est plus particulièrement inclinée vers l'arrière et vers le haut.According to the embodiment of the invention, the rear sliding surface 22 is flat and is inclined relative to the horizontal by an angle of inclination of between 6 and 30° when the suction head 2 rests on a horizontal surface. The rear sliding surface 22 is more particularly inclined towards the rear and upwards.

La surface de glissement avant 21 présente un bord avant 21.1 et un bord arrière 21.2 qui sont parallèles l'un par rapport à l'autre et qui s'étendent parallèlement à la direction d'extension de la bouche d'aspiration 7.The front sliding surface 21 has a front edge 21.1 and a rear edge 21.2 which are parallel to each other and which extend parallel to the direction of extension of the suction mouth 7.

Les bords avant et arrière 21.1, 21.2 de la surface de glissement avant 21 sont décalés l'un par rapport à l'autre, selon la direction de déplacement principale D1 de la tête d'aspiration 2, d'une distance de séparation Di1 comprise entre 15 mm et 40 mm. En d'autres termes, lorsque la tête d'aspiration 2 repose sur une surface horizontale, une projection orthogonale du bord avant 21.1 de la surface de glissement avant 21 sur la surface horizontale et une projection orthogonale du bord arrière 21.2 de la surface de glissement avant 21 sur la surface horizontale sont espacées l'une de l'autre d'une distance de séparation Di1 comprise entre 15 mm et 40 mm.The front and rear edges 21.1, 21.2 of the front sliding surface 21 are offset relative to each other, in the main direction of movement D1 of the suction head 2, by a separation distance Di1 included between 15mm and 40mm. In other words, when the suction head 2 rests on a horizontal surface, an orthogonal projection of the front edge 21.1 of the front sliding surface 21 on the horizontal surface and an orthogonal projection of the rear edge 21.2 of the sliding surface front sliding 21 on the horizontal surface are spaced from each other by a separation distance Di1 of between 15 mm and 40 mm.

En outre, le bord avant 21.1 de la surface de glissement avant 21 est surélevé par rapport au bord arrière 21.2 de la surface de glissement avant 21 lorsque la tête d'aspiration 2 repose sur une surface horizontale, et les bords avant et arrière 21.1, 21.2 de la surface de glissement avant 21 sont décalés verticalement l'un par rapport à l'autre d'une distance de décalage Di2 supérieure à 3 mm et avantageusement inférieure ou égale à 10 mm. En d'autres termes, lorsque la tête d'aspiration 2 repose sur une surface horizontale, une projection orthogonale du bord avant 21.1 de la surface de glissement avant 21 sur un plan de référence qui est vertical et qui s'étend perpendiculairement à la direction de déplacement principale D1 de la tête d'aspiration 2 et une projection orthogonale du bord arrière 21.2 de la surface de glissement avant 21 sur le plan de référence sont espacées l'une de l'autre d'une distance de décalage Di2 supérieure à 3 mm et avantageusement inférieure ou égale à 10 mm.In addition, the front edge 21.1 of the front sliding surface 21 is raised relative to the rear edge 21.2 of the front sliding surface 21 when the suction head 2 rests on a horizontal surface, and the front and rear edges 21.1, 21.2 of the front sliding surface 21 are offset vertically relative to each other by an offset distance Di2 greater than 3 mm and advantageously less than or equal to 10 mm. In other words, when the suction head 2 rests on a horizontal surface, an orthogonal projection of the front edge 21.1 of the front sliding surface 21 on a reference plane which is vertical and which extends perpendicular to the direction main displacement D1 of the suction head 2 and an orthogonal projection of the rear edge 21.2 of the front sliding surface 21 on the reference plane are spaced from each other by an offset distance Di2 greater than 3 mm and advantageously less than or equal to 10 mm.

De façon avantageuse, la surface de glissement avant 21 est configurée de telle sorte que, lorsque la tête d'aspiration 2 repose sur une surface horizontale, le bord arrière 21.2 de la surface de glissement avant 21 est situé à une distance prédéterminée de ladite surface horizontale qui est comprise entre 0,5 et 2 mm.Advantageously, the front sliding surface 21 is configured such that, when the suction head 2 rests on a horizontal surface, the rear edge 21.2 of the front sliding surface 21 is located at a predetermined distance from said surface. horizontal which is between 0.5 and 2 mm.

Avantageusement, le bord arrière 21.2 de la surface de glissement avant 21 est l'arête avant de la bouche d'aspiration 7.Advantageously, the rear edge 21.2 of the front sliding surface 21 is the front edge of the suction mouth 7.

La surface de glissement avant 21 est également configurée de telle sorte que, lorsque la tête d'aspiration 2 repose sur une surface horizontale, un plan d'inclinaison P passant par les bords avant et arrière 21.1, 21.2 de la surface de glissement avant 21 est incliné par rapport à l'horizontale d'un angle d'inclinaison compris entre 6 et 30°, et avantageusement 6 et 15°.The front sliding surface 21 is also configured such that, when the suction head 2 rests on a horizontal surface, an inclination plane P passing through the front and rear edges 21.1, 21.2 of the front sliding surface 21 is inclined relative to the horizontal by an angle of inclination between 6 and 30°, and advantageously 6 and 15°.

La surface de glissement avant 21 est convexe et est courbée depuis le bord arrière 21.2 de la surface de glissement avant 21 et en direction du bord avant 21.1 de la surface de glissement avant 21. La surface de glissement avant 21 présente un rayon de courbure R compris entre 30 et 120 mm, avantageusement entre 65 et 85 mm et par exemple d'environ 74 mm, et s'étend sur un secteur angulaire ayant un angle de secteur compris entre 30 et 60°, et avantageusement entre 35 et 55° et par exemple d'environ 43°. Un rapport du rayon de courbure R sur la distance de décalage Di2 peut par exemple être compris entre 3 et 30.The front sliding surface 21 is convex and is curved from the rear edge 21.2 of the front sliding surface 21 and towards the front edge 21.1 of the front sliding surface 21. The front sliding surface 21 has a radius of curvature R between 30 and 120 mm, advantageously between 65 and 85 mm and for example approximately 74 mm, and extends over an angular sector having a sector angle of between 30 and 60°, and advantageously between 35 and 55° and for example around 43°. A ratio of the radius of curvature R to the offset distance Di2 can for example be between 3 and 30.

Selon le mode de réalisation représenté sur les figures, le rayon de courbure R de la surface de glissement avant 21 est constant depuis le bord arrière 21.2 de la surface de glissement avant 21 et jusqu'au bord avant 21.1 de la surface de glissement avant 21, de telle sorte que la surface de glissement avant 21 est formée par une portion de surface cylindrique dont l'axe longitudinal central est parallèle à la direction d'extension de la bouche d'aspiration 7 et s'étend horizontalement lorsque la tête d'aspiration 2 repose sur une surface horizontale.According to the embodiment shown in the figures, the radius of curvature R of the front sliding surface 21 is constant from the rear edge 21.2 of the front sliding surface 21 and to the front edge 21.1 of the front sliding surface 21 , so that the front sliding surface 21 is formed by a portion of cylindrical surface whose central longitudinal axis is parallel to the direction of extension of the suction mouth 7 and extends horizontally when the head of suction 2 rests on a horizontal surface.

La surface de glissement avant 21 est plus particulièrement configuré de telle sorte qu'une tangente T à la surface de glissement avant 21 et passant par le bord arrière 21.2 de la surface de glissement avant 21 s'étend horizontalement lorsque la tête d'aspiration 2 repose sur une surface horizontale. Cependant, selon une variante de réalisation de l'invention, la tangente T pourrait être inclinée par rapport à l'horizontale d'un angle de tangente inférieur ou égal à 3°, et avantageusement inférieur ou égal 1°, lorsque la tête d'aspiration 2 repose sur une surface horizontale.The front sliding surface 21 is more particularly configured such that a tangent T to the front sliding surface 21 and passing through the rear edge 21.2 of the front sliding surface 21 extends horizontally when the suction head 2 rests on a horizontal surface. However, according to a variant embodiment of the invention, the tangent T could be inclined relative to the horizontal by a tangent angle less than or equal to 3°, and advantageously less than or equal to 1°, when the head of suction 2 rests on a horizontal surface.

Bien entendu, la présente invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. Par exemple, la face inférieure 6 pourrait comporter, à l'avant ou à l'arrière de la surface de glissement avant 21, une surface intermédiaire plane qui pourrait être horizontale ou inclinée par rapport à l'horizontale lorsque la tête d'aspiration 2 repose sur une surface horizontale.Of course, the present invention is in no way limited to the embodiment described and illustrated which has been given only by way of example. Modifications remain possible, particularly 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. For example, the lower face 6 could include, at the front or behind the front sliding surface 21, a flat intermediate surface which could be horizontal or inclined relative to the horizontal when the suction head 2 rests on a horizontal surface.

Claims (12)

Tête d'aspiration (2) comprenant une semelle (5) munie d'une face inférieure (6) configurée pour être orientée vers une surface à nettoyer, et d'une bouche d'aspiration (7) débouchant dans la face inférieure (6) de la semelle (5), la face inférieure (6) de la semelle (5) comprenant une surface de glissement avant (21) qui est située à l'avant de la bouche d'aspiration (7), la surface de glissement avant (21) présentant un bord avant (21.1) et un bord arrière (21.2) qui sont décalés l'un par rapport à l'autre selon une direction de déplacement principale (D1) de la tête d'aspiration (2), le bord avant (21.1) de la surface de glissement avant (21) étant surélevé par rapport au bord arrière (21.2) de la surface de glissement avant (21) lorsque la tête d'aspiration (2) repose sur une surface horizontale,
caractérisée en ce que la surface de glissement avant (21) est convexe et est courbée depuis le bord arrière (21.2) de la surface de glissement avant (21) et en direction du bord avant (21.1) de la surface de glissement avant (21), la surface de glissement avant (21) présentant un rayon de courbure (R) compris entre 30 et 120 mm, et en ce qu'une tangente (T) à la surface de glissement avant (21) et passant par le bord arrière (21.2) de la surface de glissement avant (21) s'étend sensiblement horizontalement lorsque la tête d'aspiration (2) repose sur une surface horizontale.Suction head (2) comprising a sole (5) provided with a lower face (6) configured to be oriented towards a surface to be cleaned, and with a suction mouth (7) opening into the lower face (6). ) of the sole (5), the lower face (6) of the sole (5) comprising a front sliding surface (21) which is located in front of the suction mouth (7), the sliding surface front edge (21) having a front edge (21.1) and a rear edge (21.2) which are offset relative to each other in a main direction of movement (D1) of the suction head (2), the front edge (21.1) of the front sliding surface (21) being raised relative to the rear edge (21.2) of the front sliding surface (21) when the suction head (2) rests on a horizontal surface,
characterized in that the front sliding surface (21) is convex and is curved from the rear edge (21.2) of the front sliding surface (21) and towards the front edge (21.1) of the front sliding surface (21 ), the front sliding surface (21) having a radius of curvature (R) of between 30 and 120 mm, and in that a tangent (T) to the front sliding surface (21) and passing through the rear edge (21.2) of the front sliding surface (21) extends substantially horizontally when the suction head (2) rests on a horizontal surface. Tête d'aspiration (2) selon la revendication 1, dans laquelle le bord avant (21.1) de la surface de glissement avant (21) et le bord arrière (21.2) de la surface de glissement avant (21) sont décalés verticalement l'un par rapport à l'autre d'une distance de décalage (Di2) supérieure à 3 mm.Suction head (2) according to claim 1, in which the front edge (21.1) of the front sliding surface (21) and the rear edge (21.2) of the front sliding surface (21) are offset vertically the one relative to the other by an offset distance (Di2) greater than 3 mm. Tête d'aspiration (2) selon la revendication 2, dans laquelle un rapport du rayon de courbure (R) sur la distance de décalage (Di2) est compris entre 3 et 30.Suction head (2) according to claim 2, wherein a ratio of the radius of curvature (R) to the offset distance (Di2) is between 3 and 30. Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 3, dans laquelle le bord avant (21.1) de la surface de glissement avant (21) et le bord arrière (21.2) de la surface de glissement avant (21) sont décalés l'un par rapport à l'autre, selon la direction de déplacement principale (D1) de la tête d'aspiration (2), d'une distance de séparation (Di1) inférieure à 40 mm.Suction head (2) according to any one of claims 1 to 3, in which the front edge (21.1) of the front sliding surface (21) and the rear edge (21.2) of the front sliding surface (21 ) are offset relative to each other, in the main direction of movement (D1) of the suction head (2), by a separation distance (Di1) less than 40 mm. Tête d'aspiration (2) selon la revendication 4, dans laquelle la distance de séparation (Di1) est supérieure à 15 mm.Suction head (2) according to claim 4, in which the separation distance (Di1) is greater than 15 mm. Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 5, dans laquelle la surface de glissement avant (21) est configurée de telle sorte que, lorsque la tête d'aspiration (2) repose sur une surface horizontale, un plan d'inclinaison passant par les bords avant et arrière (21.1, 21.2) de la surface de glissement avant (21) est incliné par rapport à l'horizontale d'un angle d'inclinaison compris entre 6 et 30°.Suction head (2) according to any one of claims 1 to 5, in which the front sliding surface (21) is configured such that, when the suction head (2) rests on a horizontal surface, an inclination plane passing through the front and rear edges (21.1, 21.2) of the front sliding surface (21) is inclined relative to the horizontal by an inclination angle of between 6 and 30°. Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 6, dans laquelle la surface de glissement avant (21) s'étend depuis une arête avant de la bouche d'aspiration (7).Suction head (2) according to any one of claims 1 to 6, wherein the front sliding surface (21) extends from a front edge of the suction mouth (7). Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 7, dans laquelle le rayon de courbure (R) de la surface de glissement avant (21) est constant depuis le bord arrière (21.2) de la surface de glissement avant (21) et jusqu'au bord avant (21.1) de la surface de glissement avant (21).Suction head (2) according to any one of claims 1 to 7, in which the radius of curvature (R) of the front sliding surface (21) is constant from the rear edge (21.2) of the sliding surface front (21) and up to the front edge (21.1) of the front sliding surface (21). Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 8, dans laquelle la surface de glissement avant (21) est formée par une portion de surface cylindrique dont l'axe longitudinal central est sensiblement parallèle à une direction d'extension de la bouche d'aspiration (7).Suction head (2) according to any one of claims 1 to 8, in which the front sliding surface (21) is formed by a portion of cylindrical surface whose central longitudinal axis is substantially parallel to a direction of extension of the suction mouth (7). Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 9, dans laquelle la surface de glissement avant (21) s'étend sur un secteur angulaire ayant un angle de secteur compris entre 30 et 60°.Suction head (2) according to any one of claims 1 to 9, in which the front sliding surface (21) extends over an angular sector having a sector angle of between 30 and 60°. Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 10, laquelle comporte en outre une brosse rotative (11) logée dans une chambre d'aspiration (8) qui est reliée fluidiquement à la bouche d'aspiration (7), la brosse rotative (11) comprenant un corps de brosse (12) qui présente un axe longitudinal central (A) et qui est configuré pour être entraîné en rotation selon un sens de rotation prédéterminé et autour d'un axe de rotation sensiblement coaxial avec l'axe longitudinal central (A) du corps de brosse (12).Suction head (2) according to any one of claims 1 to 10, which further comprises a rotating brush (11) housed in a suction chamber (8) which is fluidly connected to the suction mouth (7 ), the rotating brush (11) 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 a substantially coaxial axis of rotation with the central longitudinal axis (A) of the brush body (12). Tête d'aspiration (2) selon l'une quelconque des revendications 1 à 11, dans laquelle la surface de glissement avant (21) est configurée de telle sorte que, lorsque la tête d'aspiration (2) repose sur une surface horizontale, le bord arrière (21.2) de la surface de glissement avant (21) est situé à distance de ladite surface horizontale.Suction head (2) according to any one of claims 1 to 11, in which the front sliding surface (21) is configured such that, when the suction head (2) rests on a horizontal surface, the rear edge (21.2) of the front sliding surface (21) is located at a distance from said horizontal surface.
EP23187874.5A 2022-07-29 2023-07-26 Suction head comprising a sole provided with a curved front sliding surface Pending EP4311464A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2207884A FR3138289A1 (en) 2022-07-29 2022-07-29 Suction head comprising a sole equipped with a curved front sliding surface

Publications (1)

Publication Number Publication Date
EP4311464A1 true EP4311464A1 (en) 2024-01-31

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EP23187874.5A Pending EP4311464A1 (en) 2022-07-29 2023-07-26 Suction head comprising a sole provided with a curved front sliding surface

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EP (1) EP4311464A1 (en)
CN (1) CN117462041A (en)
FR (1) FR3138289A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2433538A1 (en) * 2010-09-24 2012-03-28 Seb S.A. Suction nozzle sliding base plate of a vacuum cleaner
WO2012107734A1 (en) * 2011-02-08 2012-08-16 Dyson Technology Limited A cleaner head
EP3047775A1 (en) * 2015-01-23 2016-07-27 Wessel-Werk GmbH Sliding sole made from plastic for a vacuum cleaner nozzle
EP3603473A1 (en) * 2018-08-03 2020-02-05 Seb S.A. Cleaning head provided with a rotary brush
EP3639715A1 (en) * 2018-10-15 2020-04-22 Wessel-Werk GmbH Floor nozzle for a vacuum cleaner
EP3795047A1 (en) * 2019-09-23 2021-03-24 Wessel-Werk GmbH Universal vacuum cleaner nozzle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2433538A1 (en) * 2010-09-24 2012-03-28 Seb S.A. Suction nozzle sliding base plate of a vacuum cleaner
WO2012107734A1 (en) * 2011-02-08 2012-08-16 Dyson Technology Limited A cleaner head
EP3047775A1 (en) * 2015-01-23 2016-07-27 Wessel-Werk GmbH Sliding sole made from plastic for a vacuum cleaner nozzle
EP3603473A1 (en) * 2018-08-03 2020-02-05 Seb S.A. Cleaning head provided with a rotary brush
EP3639715A1 (en) * 2018-10-15 2020-04-22 Wessel-Werk GmbH Floor nozzle for a vacuum cleaner
EP3795047A1 (en) * 2019-09-23 2021-03-24 Wessel-Werk GmbH Universal vacuum cleaner nozzle

Also Published As

Publication number Publication date
FR3138289A1 (en) 2024-02-02
CN117462041A (en) 2024-01-30

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