Floor Brush Auto-Locking Roller Assembly for Tool-Free Removal

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Solution Overview

Problem

Existing floor brushes in cleaning devices require complex disassembly processes and often dirty users' hands, necessitating tools for assembly and disassembly, leading to an inconvenient cleaning experience.

Innovation Solution

A floor brush equipped with an automatic locking apparatus that allows for tool-free assembly and disassembly, using a biasing assembly and trigger mechanism to securely lock and release the rolling brush assembly, enabling easy replacement without manual tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an automatic locking apparatus with trigger mechanism is used, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improveease of assembly and disassemblyVSAvoidcomplexity of locking apparatus
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The locking apparatus automatically locks the rolling brush assembly when inserted and automatically releases it when the trigger is pressed, eliminating the need for manual tool-assisted locking or unlocking operations. The system serves itself by using the insertion motion to engage the lock and the trigger press to release it.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical locking systems requiring screwdrivers or tools with a trigger-based release mechanism that uses simple manual pressing motion. The mechanical advantage is shifted from the locking action (which becomes automatic) to the release action (which requires only finger pressure on the trigger).

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If multiple assembly steps are required for stability, then reliability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvestability of rolling brush assemblyVSAvoidconvenience of replacement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The locking member is pre-configured with engagement protrusions that automatically align with corresponding recesses in the housing during insertion. The biasing assembly is pre-loaded to provide automatic locking force, eliminating the need for multiple manual securing steps while maintaining reliable attachment.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The locking member acts as an intermediary component between the rolling brush assembly and the housing. It provides the bonding function through automatic engagement features while remaining operable via the trigger mechanism, thus ensuring both reliability and ease of operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

The automatic locking apparatus simplifies the assembly and disassembly of the floor brush, improving user experience by eliminating the need for tools and reducing the number of steps required, thus enhancing convenience and cleanliness during the cleaning process.

Implementation Method 1

the compression spring is configured to push the rolling brush assembly in an axial direction away from the housing

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS20240374094A1Floor brush and vacuum cleaner
Publication Date: 2024.11.14 TECHTRONIC CORDLESS GP
  • US20240374094A1 patent drawing
  • US20240374094A1 patent drawing
  • US20240374094A1 patent drawing

AI summary

A floor brush comprising: a housing defining a dust suction cavity and including an end cover at one side thereof; a rolling brush assembly comprising a rolling brush able to pass through an opening of the end cover to be arranged in the dust suction cavity; a biasing assembly, wherein the rolling brush assembly is mounted biasedly relative to the housing by means of the biasing assembly; and an automatic locking apparatus having a release position and a locking position, wherein at the locking position, the automatic locking apparatus fixes the rolling brush assembly in position, and at the release position, the rolling brush assembly can be taken out axially outward from the housing under the effect of a biasing force. This floor brush avoids the need to use a tool to (dis)assemble the rolling brush, achieving the objects of simple structure and convenient (dis)assembly.