Vacuum Cleaner Brush Roll Locking Assembly for Single-Button Release

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Solution Overview

Problem

Existing vacuum cleaner nozzles with removable brush rolls are often difficult to use, requiring users to read manuals and struggle to remove clogged brush rolls.

Innovation Solution

A vacuum cleaner nozzle with a locking assembly that can be easily unlocked and locked by displacing a button in a single direction, facilitating the removal and reattachment of the brush roll.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking assembly is added to secure the brush roll, then the brush roll remains firmly locked during operation, but the structure becomes more complex and harder to operate

Engineering Contradiction:

Improvebrush roll locking reliabilityVSAvoidbrush roll removal ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The locking assembly transitions between locked and unlocked states through dynamic movement of the button and locking element. The button can be pressed to disengage the locking element from the locking groove, enabling easy transition between secured and removable states without complex mechanisms

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The locking assembly is divided into separate functional components: a button for actuation, a locking element that moves between engaged and disengaged positions, and a locking groove on the brush roll. This segmentation allows each component to perform its specific function simply, improving overall ease of operation while maintaining reliability

Inventive Principle:

Principle #1Segmentation

2Reliability

If the button displacement distance is increased to ensure full engagement, then the locking is more reliable, but the operation becomes more difficult especially when brush roll is clogged

Engineering Contradiction:

Improvelocking engagement reliabilityVSAvoidbutton operation ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The button only needs to be pressed a short distance to disengage the locking element from the locking groove, rather than requiring full traversal. This partial action is sufficient to release the lock, making operation easy even when the brush roll is clogged with hair or debris

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The locking element acts as an intermediary between the button and the brush roll. When the button is pressed, it moves the locking element out of the locking groove path, mediating the release action. This allows reliable disengagement with minimal button travel distance

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12303093B2Vacuum cleaner nozzle, and vacuum cleaner

Publication Date: 2025.05.20 ELECTROLUX APPLIANCES

AI summary

A vacuum cleaner nozzle having a nozzle body and a brush roll configured to rotate relative to the nozzle body. The nozzle comprises a locking assembly having a locked state, in which the locking assembly locks the brush roll to the nozzle body, and an unlocked state, in which the locking assembly unlocks the brush roll from the nozzle body. The nozzle comprises a button, wherein the locking assembly is configured to, when in the locked state, assume the unlocked state after a displacement of the button in a first direction, and when in the unlocked state, assume the locked state after a displacement of the button in the first direction. The present disclosure further relates to a vacuum cleaner comprising a nozzle.