Roller brush assembly, cleaning device, detection method, and storage medium

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Solution Overview

Problem

Existing cleaning devices with roller brushes lack the ability to distinguish between different types, limiting the diversity of product functions they can provide.

Innovation Solution

A roller brush assembly equipped with a magnetic detector on its housing to detect a magnetic signal, allowing the identification of the type of the roller brush, which includes a magnetic member or not, and a processor to determine and adjust the cleaning function accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If different roller brushes are installed in the cleaning device without distinction, then the device structure remains simple, but the diversity of product functions is reduced

Engineering Contradiction:

Improvediversity of product functionsVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A magnetic member is introduced as an intermediary identification element attached to the roller brush. The magnetic detector on the housing detects this magnetic member to identify the roller brush type, enabling functional differentiation without complex structural changes to the roller brush assembly itself.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The mechanical identification system (visual inspection, manual configuration) is replaced with a magnetic field-based detection system. The magnetic detector automatically senses the magnetic member's presence and position, eliminating the need for complex mechanical identification mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If a magnetic detector is added to identify roller brush types, then the diversity of product functions is enhanced, but the device complexity increases

Engineering Contradiction:

Improveproduct function diversityVSAvoidassembly structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The identification function is extracted from the roller brush structure itself and implemented as a separate detection system on the housing. The magnetic member is attached to the roller brush while the magnetic detector is mounted on the housing, separating the identification element from the cleaning element.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The magnetic detection system serves multiple functions: identifying roller brush type, determining rotation direction requirements, and controlling cleaning parameters. This single detection mechanism enables diverse product functions without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If magnetic members are attached to roller brushes for identification, then the accuracy of type identification is improved, but the ease of manufacture is reduced

Engineering Contradiction:

Improvetype identification accuracyVSAvoidassembly process

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The identification system is segmented into two independent components: a magnetic member that can be attached to the roller brush and a magnetic detector on the housing. This segmentation allows the magnetic member to be manufactured separately and attached during assembly, maintaining manufacturing simplicity while achieving accurate identification.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The magnetic member is implemented as a simple, low-cost attachment that can be easily replaced with different types of roller brushes. This approach enables accurate identification without requiring permanent or complex manufacturing processes, as the magnetic member can be quickly attached or detached during routine maintenance.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 accurate identification of the roller brush type, enabling the cleaning device to perform appropriate cleaning functions based on the type, thereby enhancing the diversity of product functions.

Implementation Method 1

a magnetic detector, located on an outer surface of the roller brush housing and configured to detect a magnetic signal

Methodology Applied

Scientific EffectMagnetic field detection: Magnetic Field

Implementation Method 2

the magnetic detector includes: a Hall sensor, arranged in a magnetization direction of the radially magnetized magnet

Methodology Applied

Scientific EffectHall effect: Hall Effect

Data Source

PatentEP4599745A1Roller brush assembly, cleaning device, detection method, and storage medium

Publication Date: 2025.08.13 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

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AI summary

A roller brush assembly, a cleaning device, a detection method, a storage medium, and a computer program product are provided. The roller brush assembly includes: a roller brush housing (1); a roller brush (2), located inside the roller brush housing (1); and a magnetic detector (3), located on an outer surface of the roller brush housing (1) and configured to detect a magnetic signal, where the magnetic signal is configured to determine a type of the roller brush (2).