Vacuum Cleaner Drum Brush Rib Structure Against Bearing Clogs
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Solution Overview
Problem
In vacuum cleaners, foreign matter often gets wound around the drum brush, interfering with its rotation and reducing cleaning efficiency by entering between the drum brush and its bearing, which hinders the cleaning process.
Innovation Solution
A vacuum cleaner design featuring a drum brush with an annular blocking rib and a second brush that rotates within this rib to prevent foreign matter from entering the gap between the drum brush and its bearing, ensuring smooth operation by blocking foreign matter from interfering with the rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the drum brush rotates at high speed to improve cleaning efficiency, then foreign matter is separated more effectively, but foreign matter gets wound around the drum brush and enters between the drum brush and bearing, hindering rotation
Solution Approach 1:
A blocking rib is introduced as an intermediary structure between the drum brush and the housing. This blocking rib prevents foreign matter from reaching the gap between the drum brush and bearing, thereby protecting the rotation stability without affecting the high-speed rotation capability needed for cleaning efficiency
Solution Approach 2:
The housing is segmented to include a specific blocking rib structure that divides the space around the drum brush. This segmentation creates a barrier zone that stops foreign matter progression while allowing the drum brush to rotate freely at high speed for effective cleaning
Data Source
AI summary
Disclosed is a vacuum cleaner having a structure for preventing foreign matter from entering between a drum brush and a bearing. A vacuum cleaner includes a suction portion formed with a suction port through which air and foreign matter are sucked. The suction portion includes a housing and a drum brush rotatably provided in the housing. The drum brush includes a rotating drum rotating by receiving a driving force and a brush mounted on the rotating drum. The housing is provided with an annular blocking rib, and the brush located at one end of the drum brush is configured to be accommodated in the blocking rib.