Brushroll and robot vacuum cleaner

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Solution Overview

Problem

Existing brushrolls for robot vacuum cleaners have high manufacturing costs and low efficiency due to complex process requirements, which hinder effective dirt pickup and stain removal.

Innovation Solution

A brushroll design featuring symmetrically arranged first and second rollers with mounting grooves and brush members, allowing for reduced manufacturing costs and efficient installation, enhancing cleaning ability by alternating brush structures and spiral groove orientations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If plant fibers are used in the existing brushroll to improve cleaning ability, then cleaning efficiency is improved, but manufacturing cost increases and process requirements become more complex

Engineering Contradiction:

Improvecleaning efficiencyVSAvoidmanufacturing cost

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The brushroll is divided into multiple independent brush members that can be separately manufactured and then assembled onto the roller. Each brush member is inserted into corresponding grooves on the roller surface, allowing for modular production that reduces manufacturing complexity and cost while maintaining cleaning effectiveness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The brush members are pre-formed as separate components with specific shapes and structures before being assembled onto the roller. This preliminary preparation of brush members allows for standardized production processes, reducing the overall manufacturing complexity and cost of the complete brushroll assembly.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If a single roller structure is used, then the structure is simple, but cleaning adaptability to different floor types is limited

Engineering Contradiction:

Improvestructure simplicityVSAvoidcleaning adaptability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

Different brush members are positioned at different locations on the roller, with each brush member having specific structural characteristics suited for particular cleaning tasks. This local differentiation in brush member design allows the single roller structure to adapt to various floor types and cleaning requirements while maintaining overall structural simplicity.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The brush members on the roller have varying parameters such as bristle length, density, and stiffness at different positions. This variation in brush member parameters enables the single roller structure to effectively handle different floor types and cleaning scenarios, enhancing cleaning adaptability without increasing fundamental structural complexity.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10856710B2Brushroll and robot vacuum cleaner

Publication Date: 2020.12.08 MIDEA ROBOZONE TECH CO LTD

AI summary

A brushroll is provided. The brushroll includes a first roller and a second roller. The first roller and the second roller are arranged symmetrically in an axial direction of the brushroll. The first roller is provided with a plurality of first mounting grooves spaced apart and arranged along a circumference of the first roller. The second roller is provided with a plurality of second mounting grooves spaced apart and arranged along a circumference of the second roller. The brushroll includes first brush members inserted in the first mounting grooves and second brush members inserted in the second mounting grooves. A robot vacuum cleaner having the aforementioned brushroll is also provided.