Dual Roller Brush Assembly for Automatic Floor-Carpet Switching

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Solution Overview

Problem

Existing sweeping robots with single roller brushes are inconvenient to switch between sweeping modes for different surfaces, requiring manual removal and installation of different brushes.

Innovation Solution

A roller brush component with an adjusting mechanism, including a cam and elastic element, allows for automatic switching between hard-bristle and soft-bristle roller brushes, enabling convenient mode switching between floor and carpet cleaning without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single roller brush is used on the sweeping robot, then the device structure is simple, but the sweeping mode cannot be switched conveniently for different surfaces

Engineering Contradiction:
Improvesweeping mode adaptabilityVSAvoidroller brush structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The roller brush frame is designed to be rotatable relative to the mounting base, allowing dynamic switching between different roller brushes. The adjusting mechanism enables the roller brush frame to rotate automatically based on cleaning needs, transforming a static single-roller configuration into a dynamic multi-roller system that can adapt to different sweeping modes without requiring complex manual intervention structures

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The mounting base is designed with a universal structure that can accommodate multiple types of roller brushes (first roller brush and second roller brush with different bristle characteristics). The adjusting mechanism provides universal control capability to switch between different brush types, enabling the sweeping robot to handle various surfaces (carpets, floors, ceramic tiles) with a single integrated system rather than requiring separate dedicated systems for each surface type

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If manual removal and installation of different roller brushes is required, then each roller brush can be optimized for specific surfaces, but the operation convenience deteriorates

Engineering Contradiction:
Improvesweeping mode switching convenienceVSAvoidtime for brush replacement
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The adjusting mechanism is designed to automatically switch between the first roller brush and the second roller brush based on cleaning requirements, eliminating the need for manual removal and installation operations. The mechanism performs the brush switching function autonomously, allowing the sweeping robot to transition between different sweeping modes without human intervention, thereby saving time and improving operational convenience

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Multiple roller brushes are pre-installed on the roller brush frame in advance, with each brush positioned and secured before operation. The adjusting mechanism is pre-configured to control the rotation of the roller brush frame, enabling rapid switching between brushes without requiring manual disassembly or reinstallation during operation

Inventive Principle:
Principle #10Preliminary action

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

Enables seamless switching between floor and carpet sweeping modes by rotating the roller brush frame to adjust ground clearance, ensuring optimal brush contact with the surface, enhancing cleaning efficiency and convenience.

Implementation Method 1

the elastic element applies a torque along a first direction to the roller brush frame

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the cam is in sliding contact with the roller brush frame, the cam applies a torque along a second direction to the roller brush frame

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11154174B2Cleaning device and roller brush component
Publication Date: 2021.10.26 MIDEA ROBOZONE TECH CO LTD
  • US11154174B2 patent drawing
  • US11154174B2 patent drawing
  • US11154174B2 patent drawing

AI summary

The embodiments of the present application provide a cleaning device and a roller brush component. The roller brush component includes a mounting base, a roller brush frame, an adjusting mechanism, a first roller brush and a second roller brush. A notch is formed on one side of the mounting base. The roller brush frame is rotatablely connected with the mounting base. The adjusting mechanism is in driving connection with the roller brush frame to drive the roller brush frame to rotate. The first roller brush and the second roller brush are connected with the roller brush frame, and the roller brushes are positioned in the notch. The roller brush frame, the first roller brush and the second roller brush are configured such that the first roller brush and the second roller brush may have different ground clearances during rotation of the roller brush frame.