Handheld Electric Cleaning Brush With Counter-Rotating Nested Heads

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Solution Overview

Problem

Existing electric brushes face issues with separate handling of cleaning solution and brush, splashing of cleaning solution and stains, and difficulty in controlling the brush head, particularly on uneven surfaces and narrow spaces.

Innovation Solution

A handheld electric cleaning brush with two nested brush heads rotating oppositely, driven by a mechanism that controls their opposite rotations, incorporating a central cleaning agent channel and dual liquid transfer pumps for stable solution delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single brush head rotates rapidly to improve cleaning capacity, then cleaning efficiency is improved, but the brush head deviates along the tangential direction and becomes difficult to control

Engineering Contradiction:

Improvecleaning capacityVSAvoidcontrol difficulty

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent applies counterbalancing by adding a counterweight portion to the brush head assembly. This counterweight offsets the centrifugal force generated during rapid rotation, preventing tangential deviation and enabling the brush head to maintain its intended position while rotating at high speeds for effective cleaning

Inventive Principle:

Principle #8Anti-weight (Counterweight)

2Object-affected harmful factors

If a sponge brush or scouring pad is used to reduce cleaning solution splashing, then splashing is reduced, but the cleaning force on heavy-duty grease deposits and uneven surfaces is greatly reduced

Engineering Contradiction:

Improvecleaning solution splashingVSAvoidcleaning force

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent segments the brush head into multiple independent brush units with different bristle characteristics. This allows combining soft-bristled brushes for areas requiring less splashing with stiff-bristled brushes for heavy-duty grease deposits, enabling targeted cleaning approach for different surface types and contamination levels

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If the rotational speed of the electric brush is reduced to address splashing and deviation, then splashing and deviation are reduced, but cleaning capacity declines

Engineering Contradiction:

Improvecleaning solution splashingVSAvoidcleaning capacity

Core Design Contradiction:

Object-affected harmful factorsVSProductivity

Solution Approach 1:

By incorporating a counterweight portion in the brush head assembly, the system maintains stability and reduces tangential deviation even at higher rotational speeds. This enables the brush to operate at speeds that provide effective cleaning capacity while the counterweight mitigates the harmful effects of splashing and deviation

Inventive Principle:

Principle #8Anti-weight (Counterweight)

4Ease of manufacture

If cleaning solution and electric brush are separate articles, then each can be optimized independently, but convenience of use is reduced

Engineering Contradiction:

Improveindependent optimizationVSAvoidconvenience

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The patent merges the cleaning solution delivery system with the electric brush by integrating a solution reservoir and pump mechanism directly into the brush handle. This combination allows the brush to automatically deliver cleaning solution to the brush head during operation, eliminating the need for separate solution application while maintaining independent optimization of brush and solution characteristics

Inventive Principle:

Principle #5Merging (Combining)

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

Enhances usability by integrating cleaning solution handling, reduces splashing and contamination, improves cleaning efficiency, and allows for versatile brush head operation on various surfaces.

Implementation Method 1

a liquid transfer pump, and the output of the liquid transfer pump is connected to the cleaning solution channel through a pipeline; both end side surfaces of the cleaning solution tank are respectively provided with liquid outlet ports, the liquid outlet ports at the front and rear ends are respectively provided with liquid transfer pumps

Methodology Applied

Scientific EffectPump: Pump

Data Source

PatentUS20250331633A1Handheld electric cleaning brush with two nested brush heads rotating oppositely

Publication Date: 2025.10.30 BEIJING LVSAN TECHNOLOGY CO LTD

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.