Vacuum cleaner

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Solution Overview

Problem

Existing vacuum cleaners face operational failures due to dust or debris entering the fan during high-speed operation, which affects product performance and life, and users often neglect to reinstall essential components like the cyclone drum and filter assembly after cleaning, leading to abnormal operations.

Innovation Solution

A vacuum cleaner with a foolproof assembly on the dust collecting bucket that switches between normal and abnormal positions, ensuring the dust-collection main unit can only be assembled when the cyclone drum and filter assembly are correctly installed, using mechanical foolproof members and elastic members to prevent incorrect assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If users detach the dust collecting bucket for cleaning debris, then the dust collection process can be maintained, but users may forget to reinstall essential components like the cyclone drum and filter assembly, leading to abnormal operations and dust entering the fan

Engineering Contradiction:

Improvedetachability of dust collecting bucketVSAvoidcorrect reinstallation of components

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The foolproof assembly is pre-configured on the dust collecting bucket with foolproof members positioned to detect the presence of the cyclone drum and filter assembly. Before the dust collection main unit can be assembled to the dust collecting bucket, the foolproof members must be in the correct position, which only occurs when all essential components are properly installed. This preliminary configuration prevents the problem of forgotten reinstallation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The foolproof assembly acts as an intermediary mechanism between the dust collecting bucket and the dust collection main unit. The foolproof members (including the first foolproof member on the dust collecting bucket and the second foolproof member on the cyclone drum) serve as mediators that must interact correctly for assembly to proceed. This intermediary mechanism ensures that only when all components are properly reinstalled can the assembly be completed.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a control circuit is used to detect component installation status, then assembly prevention can be achieved, but the device complexity and cost increase

Engineering Contradiction:

Improveprevention of incorrect assemblyVSAvoidcontrol circuit requirements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces electronic control circuits with a purely mechanical foolproof assembly. The foolproof members utilize mechanical interactions (pressing, pivoting, blocking) to detect component presence and prevent incorrect assembly. The first foolproof member pivots along a first rotating shaft, and the second foolproof member pivots along a second rotating shaft, creating a mechanical detection and prevention system that eliminates the need for sensors, circuits, or electronic control while achieving the same reliability goal.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The foolproof assembly is self-regulating and self-detecting through its mechanical design. The foolproof members automatically detect whether components are installed through their mechanical interactions (e.g., the abutting part pressing against the first foolproof member, the pressing member pressing against the second foolproof member). The system serves itself by using the physical presence or absence of components to automatically enable or disable assembly, without requiring external control systems.

Inventive Principle:

Principle #25Self-service

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

Prevents abnormal operations by ensuring correct installation of cyclone drum and filter assembly, improving reliability without the need for a control circuit and reducing costs.

Implementation Method 1

a first elastic member is arranged on the inner side wall of the dust collecting bucket body, and the first elastic member is configured to bias the first foolproof member toward the second working position

Methodology Applied

Scientific EffectElastic force: Elasticity

Implementation Method 2

a second elastic member is arranged on the inner side wall of the cyclone drum, and the second elastic member is configured to bias the second foolproof member toward the fourth working position

Methodology Applied

Scientific EffectElastic force: Elasticity

Data Source

PatentEP4710827A1Vacuum cleaner

Publication Date: 2026.03.18 SHENZHEN ROBOROCK INNOVATION TECH CO LTD

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AI summary

A vacuum cleaner, comprising a dust suction main unit, configured to provide power for a dust suction operation; a dust container, configured to be detachably installed with the dust suction main unit and collect debris under the action of the dust suction main unit; and a fool-proof assembly, arranged on the dust container and configured to switch between a normal working position and an abnormal working position. When the fool-proof assembly is located at the normal working position, the dust suction main unit is allowed to be assembled on the dust container; when the fool-proof assembly is located at the abnormal working position, the dust suction main unit is prevented from being assembled on the dust container.