Counter-Rotating Nested Brush Heads to Contain Cleaning Splash
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric cleaning brushes face issues with cleaning solution splashing and stain deviation due to single rotating brush heads, requiring separate cleaning solution containers and increased user effort for uneven surfaces.
Innovation Solution
A handheld electric cleaning brush with two nested brush heads rotating oppositely, driven by a motor-gear system, where one head rotates faster than the other to contain splashes and improve cleaning efficiency, with a centralized cleaning agent supply system for upright or inverted use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single brush head rotates rapidly to enhance cleaning capacity, then cleaning efficiency is improved, but the cleaning solution and dissolved stains splash around contaminating nearby articles and the user's clothing
Solution Approach 1:
The patent employs a nested structure where an inner brush head is positioned inside an outer brush head, both rotating in opposite directions. This nested configuration creates a contained cleaning zone that prevents cleaning solution and stains from splashing outward, while maintaining high rotational speeds for effective cleaning of heavy-duty grease deposits.
Solution Approach 2:
The outer brush head rotates in the opposite direction to the inner brush head, creating a counter-rotating barrier that prevents the outward splash of cleaning solution and stains. This preliminary anti-action is built into the system's operational design, automatically containing contaminants without requiring additional user intervention.
2Productivity
If a single brush head rotates rapidly, then cleaning efficiency is improved, but the brush head deviates along the tangential direction requiring the operator to apply force to control
Solution Approach 1:
The outer brush head acts as a counterbalancing element, rotating in the opposite direction to the inner brush head. This counter-rotation creates opposing centrifugal forces that balance each other, preventing tangential deviation and allowing the brush to maintain stable contact with the surface without requiring additional operator force to control its path.
3Object-affected harmful factors
If a sponge brush or scouring pad is used to prevent cleaning solution splashing, then splashing is reduced, but the cleaning force for narrow spaces and heavy-duty grease deposits is greatly reduced
Solution Approach 1:
The nested dual-brush configuration allows both brush heads to rotate at high speeds for effective grease removal, while the outer brush head contains the cleaning zone. This eliminates the need to reduce rotational speed or use absorbent materials, maintaining high cleaning force for heavy-duty applications.
4Object-affected harmful factors
If the rotational speed of electric brushes is reduced to address splashing and deviation, then splashing and deviation are reduced, but cleaning capacity declines
Solution Approach 1:
The system maintains high rotational speeds for both inner and outer brush heads, using the outer brush's counter-rotation as a preliminary containment mechanism. This allows the full cleaning capacity of high-speed rotation to be utilized while the opposing rotation of the outer brush prevents splashing and deviation simultaneously.
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 dual-head design minimizes solution splashing and stain deviation, enhances cleaning efficiency, and allows for versatile surface cleaning with reduced user effort.
Implementation Method 1
a cleaning agent fed from a cleaning agent tank is pumped into the cleaning agent channel by means of a liquid transfer pump
Implementation Method 2
one driving device drives the two rotating shafts to rotate oppositely... the driving device includes a driving motor, a first gear, a second gear, a third gear and a reversing gear; the first gear and the second gear directly engage to drive the inner rotating shaft to rotate in one direction; a reversing gear is provided between the first gear and the third gear, and the first gear drives the third gear via the reversing gear to drive the outer rotating shaft to rotate in a reverse direction
Implementation Method 3
the surface to be cleaned is then cleaned by pressing with an electric brush having bristles
Implementation Method 4
the mechanical force of the motor cooperates with the cleaning solution to enhance efficiency
Data Source
Figure 1
Figure 2
AI summary
A handheld electric cleaning brush with two nested brush heads rotating oppositely, comprising: a cylindrical shell and brush heads, wherein the brush heads are arranged at a front end of the cylindrical shell, and a handle is arranged on a side wall of the cylindrical shell. The brush heads comprise an inner brush head and an outer brush head. Two nested rotating shafts are arranged in the cylindrical shell, the two brush heads are nested spaced apart from each other and are replaceably snap-fitted into front ends of the two nested rotating shafts, respectively, and the two nested rotating shafts are an inner rotating shaft and an outer rotating shaft, respectively. One driving device drives the two rotating shafts to rotate oppositely so as to drive the two brush heads to rotate oppositely. The inner rotating shaft is sleeved on a central shaft arranged in the cylindrical shell. A cleaning agent channel is provided in the central shaft, and a cleaning agent fed from a cleaning agent tank is pumped into the cleaning agent channel by means of a liquid transfer pump, and is fed into the inner brush head from a front end of the central shaft.