Side Brush Scraper Structure to Prevent Debris Entanglement

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Solution Overview

Problem

Existing intelligent cleaning devices often face issues with side brushes getting entangled by debris such as hair, which can disrupt their cleaning efficiency and operation.

Innovation Solution

The side brush is equipped with a scraper that rotates to remove debris, featuring a front and rear scraper configuration with angled surfaces to effectively clear debris from the floor surface, preventing entanglement and enhancing cleaning performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a traditional side brush is used to move debris, then the cleaning coverage is provided, but the side brush gets entangled by debris such as hair

Engineering Contradiction:
Improvecleaning coverageVSAvoidside brush entanglement
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The side brush is segmented into multiple independent scraping parts (first scraping part, second scraping part, third scraping part) arranged radially. Each scraping part independently contacts the debris, preventing entanglement while maintaining comprehensive cleaning coverage. The segmentation allows debris to be processed by multiple separate elements rather than one continuous brush surface that can tangle.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using a traditional rotating brush that sweeps debris, the invention inverts the approach by using stationary scraping parts with inclined surfaces that passively guide and move debris through geometric design. The scraping parts have inclined surfaces that naturally direct debris toward the cleaning region without active rotation, eliminating the entanglement issue while maintaining cleaning effectiveness.

Inventive Principle:
Principle #13The other way round (Inversion)

2Productivity

If the scraper is designed with angled surfaces to effectively clear debris, then the cleaning efficiency is improved, but the structure becomes more complex

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidscraper structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The scraping parts have different local geometries optimized for their specific functions. The first scraping part has an inclined surface for initial debris contact, the second scraping part has a different inclination for intermediate processing, and the third scraping part has its own geometry for final clearance. Each local region of the scraper structure has quality (geometry) tailored to its specific cleaning task, improving overall efficiency without requiring a completely complex unified structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

Multiple scraping parts are merged into a single integrated side brush assembly that functions as one unit. The first, second, and third scraping parts work together in sequence, combining their individual debris-moving capabilities into a unified cleaning system. This merging achieves enhanced cleaning efficiency while keeping the overall structure manageable through functional integration.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP3868271B1Side brush and intelligent cleaning device
Publication Date: 2024.04.03 BEIJING ROCKROBO TECH CO LTD
  • EP3868271B1 patent drawingFigure 1
  • EP3868271B1 patent drawingFigure 2
  • EP3868271B1 patent drawingFigure 3

AI summary

A side brush (100) and an intelligent cleaning device. The side brush (100) comprises a side brush base (110) mounted on the intelligent cleaning device and a scraper (123) connected to a peripheral side of the side brush base (110), wherein the scraper (123) is used for contacting the ground to scrape sundries. On the basis of the structure of the side brush (100), the side brush (100) can be effectively prevented from being wound by the sundries in a cleaning process.