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CN-113545699-B - Rotary brush for suction head

CN113545699BCN 113545699 BCN113545699 BCN 113545699BCN-113545699-B

Abstract

The invention provides a rotary brush (11) comprising a brush body (12) having a substantially tubular shape around a central axis (A), a centering device (22) arranged in the brush body (12) and configured to cooperate with a complementary centering device (23) belonging to a drive device (16) for centering the brush body (12) relative to a drive shaft (18) coupled to a drive motor (17) belonging to the drive device (16), and a coupling device (24) arranged in the brush body (12) and configured to be rotatably coupled with a complementary coupling device (25) belonging to the drive device (16) and rotatably coupled to the drive shaft (18).

Inventors

  • Paul de SWAT
  • ANTOINE MARTY

Assignees

  • SEB公司

Dates

Publication Date
20260508
Application Date
20210421
Priority Date
20200423

Claims (14)

  1. 1. A suction head (2), comprising: A main body (4) having a receiving recess (9) open at a bottom surface of the main body (4), the bottom surface being configured to face a surface to be cleaned, -A rotary brush (11) comprising a brush body (12) having a tubular shape around a central axis (a), the brush body (12) being intended to be mounted in a receiving recess (9) provided on the suction head, the brush body (12) being configured to be driven in rotation around a rotation axis by a driving device (16) belonging to the suction head, the rotation axis of the brush body (12) being coaxial with the central axis (a) of the brush body (12), characterized in that the rotary brush (11) further comprises: -centering means (22) provided in said brush body (12) and configured to cooperate with complementary centering means (23) belonging to said driving means (16) to center said brush body (12) with respect to a driving shaft (18) coupled to a driving motor (17) belonging to said driving means (16), and Coupling means (24) provided in the brush body (12) and configured to be rotatably coupled with complementary coupling means (25) belonging to the drive means (16) and rotatably coupled to the drive shaft (18), The brush body (12) defines a motor recess (21) in which the drive motor (17) is intended to be at least partially accommodated, The brush body (12) is mounted in the receiving recess (9), and -A driving device (16) configured to drive the brush body (12) in rotation about the rotation axis, the driving device (16) comprising: a drive motor (17), A drive shaft (18) coupled to the drive motor (17), -Complementary centring means (23) provided in the brush body (12) and configured to cooperate with centring means (22) provided on the rotary brush (11) to centre the brush body (12) with respect to the drive shaft (18), and -Complementary coupling means (25) rotatably coupled to said drive shaft (18) and arranged in said brush body (12), said complementary coupling means (25) being configured to rotatably couple with coupling means (24) arranged on said rotary brush (11), The complementary centering device (23) comprises at least one elastically deformable centering element comprising a plurality of elastically deformable centering tabs (37) angularly offset with respect to each other with respect to the drive shaft (18).
  2. 2. Suction head (2) according to claim 1, wherein the complementary coupling means (25) deviate from the complementary centring means (23) in a direction parallel to the central axis (a) of the brush body (12).
  3. 3. Suction head (2) according to claim 1 or 2, wherein the complementary coupling means (25) are distinct from the complementary centring means (23) and separate from the latter.
  4. 4. Suction head (2) according to claim 1 or 2, wherein the drive means (16) comprise a coupling member (39) which is integral and comprises the complementary coupling means (25) and the complementary centring means (23).
  5. 5. Suction head (2) according to claim 1 or 2, wherein the complementary centring means (23) are arranged around the complementary coupling means (25).
  6. 6. Suction head (2) according to claim 1 or 2, wherein the drive means (16) and the rotating brush (11) are configured such that, when the brush body (12) is inserted into the receiving recess (9), the at least one elastically deformable centering element contacts a centering means (22) provided on the rotating brush (11) and deforms elastically, thereby centering the brush body (12) with respect to the drive shaft (18).
  7. 7. Suction head (2) according to claim 1 or 2, wherein the at least one elastically deformable centring element is a centring collar which is elastically deformable and coaxial with the drive shaft (18).
  8. 8. Suction head (2) according to claim 1 or 2, wherein each centering wing (37) is inclined with respect to the drive shaft (18).
  9. 9. Suction head (2) according to claim 8, wherein the centering means (22) comprise a frustoconical centering wall (26) configured to converge away from the drive shaft (18), each centering wing (37) being inclined with respect to the drive shaft (18) in a rest position by an inclination angle greater than a half angle at the apex of the frustoconical centering wall (26).
  10. 10. Suction head (2) according to claim 1 or 2, wherein the main body (4) has a passage opening (13) opening in the receiving recess (9), through which passage opening the brush body (12) is adapted to be introduced into the receiving recess (9) and removed from the receiving recess, the suction head (2) comprising a closure plug (15) configured to at least partially close the passage opening (13), the brush body (12) being rotatably mounted with respect to the closure plug (15).
  11. 11. Suction head (2) according to claim 1 or 2, wherein the drive shaft (18) is coupled to an output shaft of the drive motor (17).
  12. 12. Suction head (2) according to claim 1 or 2, wherein the drive shaft (18) is an output shaft of the drive motor (17).
  13. 13. Suction head (2) according to claim 1 or 2, wherein the drive motor (17) is at least partially accommodated in the brush body (12).
  14. 14. Suction head (2) according to claim 1 or 2, wherein the output shaft of the drive motor (17) is parallel to the drive shaft (18), and the drive motor (17) is arranged outside the rotating brush.

Description

Rotary brush for suction head Technical Field The present invention relates to the field of vacuum cleaners equipped with a suction head for sucking dust and small particle waste present on a surface to be cleaned. Background Vacuum cleaners equipped with suction heads are well known in the market, which allow cleaning of surfaces by suction to remove dust and small particle waste that has settled on the surfaces. The surface to be sucked may be, for example, a tile, parquet, laminate, carpet or tile. The suction head comprises in a known manner a main body comprising a sole plate provided with a sole surface and a suction opening in the sole surface of the sole plate. During use of the cleaner head, the underside of the sole plate will be positioned adjacent to the surface to be aspirated. To improve the cleaning performance of a suction head, it is known to equip the suction head with: a rotatable brush comprising a brush body which is rotatably movable about an axis of rotation and which is detachably mounted in a receiving recess defined by the main body of the suction head, and A drive device configured to drive the brush body in rotation about the rotation axis, the drive device comprising a drive motor provided with an output shaft. The drive means further comprises a drive shaft substantially coaxial with the central axis of the brush body. The drive shaft may be formed by or may be coupled to an output shaft of the drive motor. The drive device further includes a coupling member rotatably coupled to the drive shaft and configured to rotatably couple with a coupling device provided on the brush body so as to transmit rotational torque from the output shaft of the drive motor to the brush body. Misalignment of the drive shaft relative to the coupling means on the brush body arrangement may make it difficult to place the rotating brush in its receiving recess, resulting in incorrect locking of the rotating brush in its receiving recess, or in damage to the coupling means or the drive means, when the rotating brush is placed in its receiving recess. Furthermore, in a configuration in which the drive motor is provided inside the rotating brush, the brush body easily contacts an outer cylindrical surface of a motor chamber provided on the main body and generally at least partially accommodated in the brush body in the event of misalignment between the central axis of the brush body and the output shaft of the drive motor during operation of the suction head when the rotating brush is rotated. The risk of the brush rubbing against the motor chamber is particularly high when the radial clearance provided between the brush and the motor chamber is reduced. This friction of the brush body with the motor compartment results in increased electrical energy consumption and even risks impeding the rotation of the rotating brush around the motor compartment. Disclosure of Invention The present invention aims to remedy all or part of these drawbacks. In particular, the technical problem underlying the present invention is to provide a rotatable brush for a suction head which has an increased service life and which allows an increased service life of the suction head. To this end, the invention relates to a rotary brush for a suction head, comprising: A brush body having a substantially tubular shape around a central axis, the brush body being intended to be mounted in a receiving recess provided on the suction head, the brush body being configured to be driven in rotation about a rotation axis by a drive means belonging to the suction head, the rotation axis of the brush body being substantially coaxial with the central axis of the brush body, A centering device arranged in the brush body and configured to cooperate with a complementary centering device belonging to the drive device to center the brush relative to a drive shaft coupled to a drive motor belonging to the drive device, and -Coupling means provided in the brush body and configured to be rotatably coupled with complementary coupling means belonging to the drive means and rotatably coupled to the drive shaft. The presence of such a configuration of the rotary brush, in particular of the centering means, makes it possible to automatically center the central axis of the brush body with respect to the drive shaft coupled to the drive motor from an eccentric position of the brush body, in particular when the brush body is inserted into a receiving recess provided on the suction head. This arrangement facilitates placement of the rotating brush in its receiving recess and avoids misalignment between the brush body and the drive shaft and increases the service life of the coupling means provided in the brush body and the complementary coupling means belonging to the drive means. The expression "complementary centring means" means centring means having at least one shape complementary to the shape of the centring means provided on the rotating brush. The expres