Cleaner head

• US 10,092,150 B2
• Filed: 09/01/2015
• Issued: 10/09/2018
• Est. Priority Date: 09/02/2014
• Status: Expired due to Fees

• Current Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Original Assignee: Dyson Technology Limited (Beeswax Holdings UK Limited)
• Inventors: Isley, David Andrew, Lee, Damian Henri
• Primary Examiner(s): CHIN, RANDALL E
• Application Number:
  US14/842,541
• Publication Number:
  US 20160058258A1
• Time in Patent Office: 1,134 Days
• CPC Class Codes: A47L 11/19 Parts or details of the brushing tools
• CPC Class Codes: A47L 9/0411 driven by electric motor
• CPC Class Codes: A47L 9/0455 Bearing means therefor
• CPC Class Codes: A47L 9/0477 Rolls

Abstract

A cleaner head for a cleaning appliance, comprising a main body, a first bearing assembly, a second bearing assembly and a brushbar. The first bearing assembly is secured to the main body, and comprises a first stationary part fixed with respect to the main body and a first rotary part arranged to rotate with respect to the first stationary part. The second bearing assembly is secured to the main body, and comprises a second stationary part fixed with respect to the main body and a second rotary part arranged to rotate with respect to the second stationary part. The brushbar is coupled for rotation with the first and second rotary parts such that the brushbar rotates with the first and second rotary parts, and is configured to slidably engage the first and second rotary parts such that it can be separated from the first and second rotary parts for cleaning.

Claims

1. A cleaner head for a cleaning appliance, comprising:

a main body comprising a housing that defines a chamber;

a first bearing assembly secured to an end cap that is removable from the housing, the first bearing assembly comprising a first stationary part which is fixed with respect to the end cap and a first rotary part which is arranged to rotate with respect to the first stationary part, wherein at least a portion of the first rotary part projects into the chamber relative to the first stationary part;

a second bearing assembly secured to the main body, the second bearing assembly comprising a second stationary part which is fixed with respect to the main body and a second rotary part which is arranged to rotate with respect to the second stationary part; and

a brushbar coupled for rotation with the first and second rotary parts such that the brushbar rotates with the first and second rotary parts, wherein the brushbar is configured to slidably engage the at least a portion of the first rotary part and the second rotary part such that the brushbar can be separated from the first and second rotary parts for cleaning.

2. The cleaner head of claim 1, wherein the brushbar slidably engages the first and second rotary parts in the longitudinal direction of the brushbar.

3. The cleaner head of claim 1, wherein the brushbar comprises respective first and second sockets at each end which are arranged to receive the respective first and second rotary parts.

4. The cleaner head of claim 3, wherein each socket comprises an engaging feature which engages with an engaging feature provided on the corresponding rotary part in order to secure the respective sockets and rotary parts for rotation with each other.

5. The cleaner head of claim 4, wherein each engaging feature of the sockets comprises one of a protrusion and a recess and each corresponding engaging feature of the rotary parts comprise one of the other of a protrusion and a recess, the protrusions and recesses being configured to slidably engage each other.

6. The cleaner head of claim 1, wherein the brushbar consists entirely of non-metallic materials.

7. The cleaner head of claim 1, wherein the first and second bearing assemblies comprise metallic components.

8. The cleaner head of claim 1, wherein the brushbar is hollow and a brushbar motor for driving the brushbar is housed by the brushbar.

9. The cleaner head of claim 1, wherein the brushbar comprises a tufted material on an outer surface of the brushbar.

10. The cleaner head of claim 9, wherein the brushbar comprises a plurality of radially extending bristles and the tufted material is disposed between the bristles.

11. The cleaner head of claim 10, wherein the tufted material extends over substantially the entire circumferential and axial extent of the regions of the brushbar between the bristles.

12. The cleaner head of claim 1, wherein the first and second bearing assemblies are disposed at opposite ends of the brushbar.

13. The cleaner head of claim 1, wherein the first and second bearing assemblies are housed by the brushbar.

14. The cleaner head of claim 1, wherein the first bearing assembly comprises a bearing and the first rotary part is fixed to an inner race of the bearing.

15. The cleaner head of claim 1, wherein an inner surface of the brushbar is configured to slidably engage the first rotary part.

16. The cleaner head of claim 15, wherein the first rotary part comprises one or more resilient members for resiliently engaging the inner surface of the brushbar.

17. A cleaning appliance comprising the cleaner head of claim 1.