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Cleaner head

a cleaner head and head technology, applied in the field of cleaner heads, can solve the problems of reducing the lifespan of the cleaner head, the agitator may not align concentrically with the dog, etc., and achieve the effect of reducing vibration and noise, and reducing nois

Inactive Publication Date: 2014-02-13
DYSON TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The cleaner head described in this patent reduces noise and vibration during operation by tightening the agitator against the dog, which prevents play between them. This results in a quieter and more stable operation compared to conventional cleaner heads.

Problems solved by technology

A further problem with existing cleaner heads is that that the agitator may not align concentrically with the dog.
As a result, out-of-balance forces place an increased stress on components of the cleaner head, particularly the bearings, which may reduce the lifespan of the cleaner head.

Method used

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Examples

Experimental program
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Embodiment Construction

[0044]The cleaner head 1 of FIG. 1 comprises a housing 2 within which an agitator 3 and a drive assembly 4 are mounted.

[0045]The agitator 3 comprises an elongate body 5 to which bristles, flicker strips or other means 6 for agitating a cleaning surface are attached. The agitator 3 is mounted at one end to a bushing 7 seated within a removable cap 8. The opposite end of the agitator 3 is mounted to a dog 12 forming part of the drive assembly 4.

[0046]The drive assembly 4 comprises an electric motor 10 and a transmission 11 for transmitting torque generated by the motor 10 to the agitator 3. The transmission 11 comprises, among other things, a dog 12 that engages with the agitator 3. The dog 12 is therefore responsible for transmitting the torque generated by the drive assembly 4 to the agitator 3. With the exception of the dog 12, the details of the drive assembly 4 are not pertinent to the present invention, and drive assemblies for driving an agitator of a cleaner head are well know...

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PUM

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Abstract

A cleaner head that includes an agitator and a drive assembly for driving the agitator. The drive assembly includes a dog for transmitting torque to the agitator. One of the dog and the agitator includes a shank having a screw thread, and the other of the dog and the agitator includes a bore having a complementary screw thread. The shank projects into the bore and the two threads mate such that, as the dog rotates, the agitator screws on to and tightens against the dog.

Description

REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority of United Kingdom Application No. 1214422.6, filed Aug. 13, 2012, United Kingdom Application No. 1214423.4, filed Aug. 13, 2012, and United Kingdom Application No. 1214424.2, filed Aug. 13, 2012, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a cleaner head having an agitator and a drive assembly for driving the agitator.BACKGROUND OF THE INVENTION[0003]The cleaner head of an appliance, such as a vacuum cleaner or floor sweeper, may include an agitator driven by a drive assembly. The drive assembly often includes a dog for transmitting torque generated by the drive assembly to the agitator. A problem with existing cleaner heads is that there is often a degree of play between the dog and the agitator. Consequently, as the agitator rotates, the agitator vibrates and generates noise.SUMMARY OF THE INVENTION[0004]The present invention pr...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47L9/04
CPCA47L9/0411A47L9/0455
Inventor KERR, WILL HENRYSKUSE, ALISTAIR WILLIAM
Owner DYSON TECH LTD