Anti-tangle roller brush, roller brush mechanism and sweeping robot

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Solution Overview

Problem

Conventional sweeping robots face issues with hair and debris entangling in the roller brush, leading to reduced cleaning effectiveness and increased rotation resistance.

Innovation Solution

An anti-tangle roller brush mechanism featuring a roller brush housing with a cavity and through slot, equipped with a cutting assembly including a blade and connecting piece that moves along a fixed shaft to cut entangled hair.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional roller brush structure is used for cleaning, then the cleaning equipment can perform basic sweeping functions, but hair and debris become entangled in the roller brush, reducing cleaning effectiveness and increasing rotation resistance

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidhair entanglement

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the harmful function of hair entanglement by introducing a cutting assembly that actively removes entangled hair from the roller brush. The blade component specifically targets and cuts the entangled hair, separating the harmful effect (entanglement) from the cleaning function, thereby maintaining cleaning effectiveness while eliminating the harmful factor.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the harmful effect of entangled hair into a beneficial cutting action. The entangled hair that would normally obstruct the roller brush is instead positioned as the target for the cutting blade, transforming the problem of entanglement into the function of hair cutting. This converts the harmful factor into a useful action that maintains cleaning performance.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Speed

If the roller brush rotates during cleaning, then it can effectively sweep the surface, but the rotation resistance increases due to entangled debris, potentially causing the roller brush to get stuck

Engineering Contradiction:

Improveroller brush rotationVSAvoidrotation resistance

Core Design Contradiction:

SpeedVSForce

Solution Approach 1:

The patent applies preliminary anti-action by positioning the cutting blade to proactively cut entangled hair before it can significantly increase rotation resistance. The cutting assembly is designed to intercept and cut hair as it becomes entangled, preventing the buildup of resistance that would otherwise slow down or stop the roller brush rotation, thereby maintaining consistent rotational speed throughout the cleaning process.

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS20250127364A1Anti-tangle roller brush, roller brush mechanism and sweeping robot

Publication Date: 2025.04.24 ZHONGSHAN UNION OPTECH RES INST CO LTD

AI summary

Disclosed are an anti-tangle roller brush, a roller brush mechanism, and a sweeping robot. The anti-tangle roller brush includes a roller brush hosing and a cutting assembly. The roller brush hosing is provided with a cavity and a through slot communicating with the cavity. One end of the roller brush hosing is a driving end, the driving end is connected to a driving piece, another end of the roller brush hosing is movably connected to a fixed portion, and the fixed portion is provided with a fixed shaft extending towards the cavity. The cutting assembly includes a connecting piece and a blade provided in the cavity. The blade is provided in the through slot and is movably connected to the roller brush hosing, and the connecting piece is movably connected to the fixed shaft and is connected to the blade.