Cleaner head for a vacuum cleaner

Abstract

A cleaner head for a vacuum cleaner includes a body that defines a suction chamber, the suction chamber having a suction inlet for engaging a surface to be cleaned, and an outlet for fluid connection to a suction generator of a vacuum cleaner. The cleaner head further includes first and second brush bars each configured to contact a surface engaged by the suction inlet, and a drive mechanism which has an actuator. The drive mechanism is configured to rotate the brush bars about respective axes. The drive mechanism is also configured to rotate the first brush bar independently of the second brush bar, and to rotate the second brush bar independently of the first brush bar.

Description

REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of United Kingdom Application No. 1606174.9, filed Apr. 8, 2016, the entire contents of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to the field of vacuum cleaners, and in particular to cleaner heads for vacuum cleaners.BACKGROUND OF THE INVENTION[0003]Cleaner heads may incorporate rotatable brush bars, such as those which are used to improve the cleaning performance of the cleaner head and thus of the vacuum cleaner as a whole. Such cleaner heads may be used with a vacuum cleaner that may be of any general type. For example, the cleaner head may be a fixed cleaner head on an upright vacuum cleaner, or alternatively it may be the cleaner head of a floor tool used with a cylinder vacuum cleaner or stick-vac cleaner.[0004]It is conventional to provide the cleaner head of a vacuum cleaner with a rotatable brush bar. The design of the brush bar can be tailo...

AI Technical Summary

Benefits of technology

The cleaner head described in this patent has two brush bars that work together to improve pickup performance. It can be used on a wider range of surfaces and provides a stronger sweeping or agitating action compared to a cleaner head with a single brush bar. The brush bars are made with carbon fibre bristles that help reduce static electricity and provide a polishing action. Overall, this cleaner head has better performance and is more adaptable to different surfaces.

Problems solved by technology

While tailoring the brush bar of a cleaner head to a particular surface may improve the pickup performance of the cleaner head when cleaning that particular surface, it can also result in a drop in performance when the cleaner head is used on a different surface.

Existing attempts to address this problem generally result in cleaner heads that suffer from increased weight and bulk, increased complexity, reduced ease of use and / or reduced rotational power delivered to a particular brush bar.

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