Cleaner head for a vacuum cleaner

Patent metadata

Field	Value
Publication number	US-2022079402-A1
Application number	US-202017612876-A
Country	US
Kind code	A1
Filing date	Apr 17, 2020
Priority date	Jun 3, 2019
Publication date	Mar 17, 2022
Grant date	—

Abstract

A cleaner head for a vacuum cleaner includes a suction cavity comprising an opening through which debris enters the cleaner head, and an outlet. An agitator is mounted in the suction cavity in a cantilevered manner for rotation relative thereto. The agitator includes a core having a first, free end, a second end remote from the free end, and upstanding helical ridges extending between the free end and the second end, and a row of bristles located between the helical ridges and inclined relative to the core in a direction extending towards the free end of the core.

First claim

1 . A cleaner head for a vacuum cleaner, the cleaner head comprising:
a suction cavity comprising an opening through which debris enters the cleaner head, and an outlet; an agitator mounted in the suction cavity in a cantilevered manner for rotation relative thereto, the agitator comprising: a core having a first, free end, a second end remote from the free end, and upstanding helical ridges extending between the free end and the second end; and a row of bristles located between the helical ridges and inclined relative to the core in a direction extending towards the free end of the core.

2 . The cleaner head as claimed in claim 1 , wherein the row of bristles extends towards the free end of the core in a helical direction, and wherein the bristles are inclined towards the free end of the core at an acute angle to the helical direction.

3 . The cleaner head as claimed in claim 1 , wherein the acute angle is in the range from 20 to 60°.

4 . The cleaner head as claimed in claim 1 , wherein the acute angle is in the range from 30 to 50°.

5 . The cleaner head as claimed in claim 1 , wherein, as measured in a direction perpendicular to the longitudinal axis of the core, the height of the upstanding ridges is at least 50% of the height of the bristles.

6 . The cleaner head as claimed in claim 1 , wherein the core is conical in shape, the free end of the core having a smaller diameter than the second end of the core.

7 . The cleaner head as claimed in claim 6 , wherein the cleaner head comprises a sole plate in which the opening is formed, and wherein the lowermost portion of the external surface of the core is parallel with the sole plate.

8 . The cleaner head as claimed in claim 6 , wherein the suction cavity is defined by a substantially conical housing of the cleaner head.

9 . The cleaner head as claimed in claim 1 , comprising a drive for driving rotation of the agitator, and wherein the agitator is connected to the drive at or towards the second end of the agitator.

10 . The cleaner head as claimed in claim 9 , wherein the drive comprises a motor located externally of the agitator, and a belt connecting the agitator to the motor.

11 . The cleaner head as claimed in claim 1 , wherein the row of bristles comprises a continuous row of bristles.

12 . The cleaner head as claimed in claim 1 , wherein the row of bristles comprises a plurality of discrete bristle tufts.

Assignees

• Dyson Technology Ltd

Inventors

• Isaacs Andrew John

Classifications

• A47L9/0477 Primary

  Rolls · CPC title

• A47L9/0455

  Bearing means therefor · CPC title

• A47L9/0444

  for conveying motion by endless flexible members, e.g. belts · CPC title

• A46B13/006

  formed by winding a strip tuft in a helix about the body · CPC title

• A47L9/04

  with driven brushes or agitators · CPC title