Vacuum Cleaner Drum Brush Foreign Object Stopper to Reduce Abrasion
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Solution Overview
Problem
Existing vacuum cleaners with drum brushes face issues with durability and cleaning efficiency due to hard foreign objects that rotate along with the drum brush, causing abrasion and damage to the brush and scraper, especially when these objects are not effectively removed from deep carpet fibers.
Innovation Solution
The vacuum cleaner incorporates a foreign object stopper positioned at a predetermined distance along the rotation direction from the scraper, which prevents hard objects from penetrating between the drum brush and scraper, and includes a scraper that contacts the outer circumferential surface of the drum brush to remove foreign objects, thereby enhancing durability and cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the drum brush rotates at high speed to clean deep carpet fibers, then cleaning efficiency is improved, but hard foreign objects rotate along with the drum brush causing abrasion and damage to the brush and scraper
Solution Approach 1:
The foreign object stopper is positioned upstream in the rotation direction to intercept hard foreign objects before they can penetrate between the drum brush and scraper. This preliminary blocking action prevents damage before it occurs, allowing the drum brush to rotate at high speed for effective cleaning without compromising the durability of the brush and scraper components.
2Productivity
If the scraper is positioned close to the drum brush to remove foreign objects, then cleaning efficiency is improved, but hard foreign objects can penetrate between them causing abrasion and damage
Solution Approach 1:
The foreign object stopper serves as an intermediary component positioned between the incoming foreign objects and the scraper-drum brush interface. It selectively blocks hard foreign objects that could cause damage while allowing the scraper to remain close to the drum brush for effective removal of softer foreign objects and dust, thus resolving the contradiction between cleaning efficiency and component protection.
3Productivity
If the flannel fabric is used on the drum brush to clean carpets, then cleaning effectiveness on deep fibers is improved, but hard foreign objects deform the flannel fabric causing damage
Solution Approach 1:
The foreign object stopper performs preliminary blocking of hard foreign objects before they reach the flannel fabric-covered drum brush. This prevents hard objects from deforming or damaging the flannel fabric while allowing the fabric to effectively clean deep carpet fibers, thus preserving both cleaning effectiveness and fabric integrity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents the drum brush and scraper from being abraded by hard foreign objects, improves the removal of dust and debris, and enhances the overall cleaning efficiency by preventing deep penetration and damage, while ensuring the scraper is protected from surface contact damage.
Implementation Method 1
a cleaner body (2) configured to generate suction power
Implementation Method 2
Due to a rotating airflow generated when the drum brush rotates at high speed, dust and various foreign objects have characteristics of rotating along a rotation direction of the drum brush
Implementation Method 3
The scraper provided on the outside of the drum brush is configured to minimize a gap with the drum brush. Such various foreign objects may be removed by the scraper
Implementation Method 4
a foreign object stopper configured to be provided in one area of the drum housing part at a predetermined inflow blocking distance along a rotation direction of the drum brush from the scraper
Data Source
AI summary
Disclosed is a vacuum cleaner with a drum brush. The vacuum cleaner includes: a cleaner body configured to generate suction power; and a foreign object suctionor configured to suck foreign objects by the suction power. The foreign object suctionor includes a cylindrical drum brush and a drum support configured to house a part of the drum brush and rotatably support the drum brush. The drum support includes a drum housing part configured to have a shape corresponding to an outer circumferential surface of the housed drum brush, a scraper configured to be provided in the drum housing part to remove foreign objects attached to the drum brush, and a foreign object stopper configured to be provided in one area of the drum housing part at a predetermined inflow blocking distance along a rotation direction of the drum brush from the scraper. As a result, the vacuum cleaner may effectively prevent the drum brush and the scraper from being abraded or damaged by rotating with the drum brush without removing certain foreign objects.