Cleaning implement
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Solution Overview
Problem
Window cleaning implements face challenges in applying the right pressure, especially when using an extension pole, as they tend to leave traces or fail to clean effectively due to bending or inadequate reach, particularly for tall windows or those recessed in buildings.
Innovation Solution
A cleaning implement with a resiliently deformable support arm that allows the squeegee blade to move relative to the handle, providing a larger margin of error for uniform pressure application and easier reach of lower window edges, featuring a pivotable and adjustable design for use with extension poles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid support arm is used to maintain structural stability, then the implement maintains structural stability, but the squeegee blade cannot adapt to varying angles and pressure requirements
Solution Approach 1:
The support arm is designed as a resiliently deformable component that can dynamically adjust its configuration between extended and retracted states. This allows the arm to adapt to varying angles and pressure requirements while maintaining structural integrity through controlled deformation rather than rigid fixation.
Solution Approach 2:
The support arm's physical parameters (length, configuration) are made changeable through resilient deformation. The arm can transition between different states (extended for reach, retracted for precision) allowing the system to optimize performance across different operating conditions without compromising structural stability.
2Ease of operation
If pressure is applied to reach lower window edges, then the blade can access recessed areas, but the blade bends or waves leaving traces
Solution Approach 1:
The resilient support arm provides dynamic compliance that allows the blade to naturally conform to the window surface without excessive force. As the arm deforms under light pressure, it maintains blade-to-surface contact while preventing the bending and waving that occurs with rigid, over-pressured systems.
Solution Approach 2:
The support arm's effective length and stiffness parameters change during operation based on the pressure applied and the angle of the handle. This automatic parameter adjustment allows the system to maintain optimal blade pressure across varying operating conditions, preventing both bending and insufficient contact.
3Ease of operation
If the handle is positioned for ergonomic comfort, then the user experiences less wrist strain, but the blade cannot reach lower edges of recessed windows
Solution Approach 1:
The resilient support arm acts as a dynamic extension mechanism that compensates for the fixed handle position. When reaching lower edges, the arm extends and deforms to provide the necessary additional reach without requiring the user to contort their wrist or body into uncomfortable positions.
Solution Approach 2:
The support arm serves as an intermediary element between the handle and the squeegee blade. It provides the mechanical extension and compliance needed to reach recessed areas while allowing the handle to remain in an ergonomically comfortable position for the user.
4Length of moving object
If the support arm is made longer to reach elevated windows, then the reach is extended, but the blade becomes harder to control and apply uniform pressure
Solution Approach 1:
The resilient support arm introduces dynamic compliance that counteracts the instability inherent in long rigid structures. The arm's ability to deform and absorb vibrations provides natural damping and stability, allowing the user to maintain precise pressure control even when reaching elevated windows through a long extension.
Solution Approach 2:
The effective stiffness and damping parameters of the support arm change with its extension state. When extended for elevated windows, the arm's resilient properties provide increased stability and control authority, compensating for the increased length that would otherwise make pressure control difficult.
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 deformable support arm ensures consistent pressure across varying angles and reduces wrist strain by allowing easier access to lower window edges, improving cleaning efficiency and comfort when using the tool with or without an extension pole.
Implementation Method 1
The support arm is resiliently deformable so that the squeegee blade is movable relative to the handle, a distance between the handle and the squeegee blade varying when the support arm deforms
Data Source
AI summary
A cleaning implement in which a squeegee blade is linked to a handle through a resiliently deformable support arm so that the squeegee blade is movable relative to the handle. A distance between a handle longitudinal axis and the squeegee blade varies when the support arm deforms. The support arm facilitates application on the surface of a force within a predetermined range by the squeegee blade.