Cleaning head
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Solution Overview
Problem
Existing vacuum cleaner cleaning heads with motorized brushes often clog due to debris like hair, requiring users to manually remove the brushes, which can be cumbersome and lead to debris spillage.
Innovation Solution
A cleaning head design featuring a removable cassette with a rotatable bar and spindle assemblies that include cover portions to prevent debris from reaching the bearings, allowing easy maintenance and preventing hair from wrapping around the bar, with a locking mechanism for secure attachment and easy removal without dislodging dirt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motorized cleaning brush is used to dislodge ingrained dirt, then cleaning effectiveness on dirty surfaces is improved, but the brush can clog with debris such as hair requiring manual removal
Solution Approach 1:
The cleaning brush is segmented into a modular cassette assembly that can be easily removed from the cleaning head. The cassette contains the rotatable bar with cleaning elements and is held by a mounting assembly with removable cover portions, allowing users to separate the brush component for maintenance without disassembling the entire cleaning head.
Solution Approach 2:
The cassette mounting assembly includes removable cover portions that can be taken off to expose the rotatable bar and bearing. This allows users to extract and remove clogged hair and debris from around the bearing and bar without dismantling the entire cleaning head assembly.
2Ease of repair
If the cleaning brush is manually removed for maintenance, then clogged debris can be cleared, but users may have to invert the cleaning head causing suctioned debris to fall out
Solution Approach 1:
Instead of requiring users to invert the cleaning head to access the brush, the design allows the cassette and cover portions to be removed from the side or top of the cleaning head. This inverted approach to accessibility prevents suctioned debris from falling out while enabling easy maintenance.
3Reliability
If the rotatable bar is securely mounted in the cassette, then cleaning performance is maintained, but the bar and mounting assembly become difficult to separate for maintenance
Solution Approach 1:
The mounting assembly features dynamic fastening elements such as spring-loaded clips or bayonet connectors that provide secure mounting during operation but can be easily released by simple manual manipulation. The cover portions are designed with snap-fit or tool-free removal mechanisms that maintain stability when attached but allow quick separation for maintenance.
Data Source
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AI summary
A cleaning head connectable to a vacuum cleaner comprises a cassette removeably mountable on the cleaning head. A rotatable bar has projecting cleaning elements engageable with a surface to be cleaned and the rotatable bar is removeably mountable in the cassette. A first cassette mounting assembly is coupled to the rotatable bar at a first end with a first spindle. A second cassette mounting assembly is coupled to the rotatable bar at a second end with a second spindle. The first and second cassette mounting assemblies have removable cover portions for shielding the first and second spindles from debris and the first cassette mounting assembly is rotatably coupled to and removable with the first spindle.