Rotatable Squeegee Attachment for Bidirectional Vacuum Cleaning
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Solution Overview
Problem
Conventional squeegee tools for vacuum cleaners are limited to one-directional use and suffer from excessive wear and noise due to fixed attachment to the suction inlet, leading to inefficiencies and reduced lifespan.
Innovation Solution
A rotatable squeegee assembly that can be positioned forward or rearward relative to the suction inlet, allowing bidirectional use and reducing wear by minimizing flexing, with serrations to inhibit harmonic whistling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the squeegee is fixed relative to the suction inlet, then the squeegee can be used in one direction, but the squeegee experiences excessive wear and skipping or chattering across the surface
Solution Approach 1:
The squeegee assembly is made rotatable relative to the housing through a rotational connection mechanism, allowing it to dynamically adjust its position between forward and rearward orientations. This dynamic capability enables the squeegee to adapt to different cleaning directions and surface conditions, eliminating the fixed unidirectional limitation while reducing wear and chattering through proper positioning.
2Productivity
If the squeegee is positioned in front of the suction inlet, then material can be collected by the squeegee, but the user can only draw the squeegee tool in a backwards motion
Solution Approach 1:
The rotatable squeegee assembly allows the tool to adapt its orientation dynamically. When the squeegee is positioned in front of the suction inlet for material collection, the rotational connection enables the user to subsequently draw the tool in either forward or backward motion by rotating the squeegee assembly to the appropriate position, thus providing bidirectional cleaning capability while maintaining effective material collection.
3Ease of operation
If forces are exerted on the fixed squeegee during operation, then the squeegee can flex to conform to the surface, but this causes excessive wear on the squeegee
Solution Approach 1:
The rotational connection mechanism allows the squeegee assembly to rotate rather than flex excessively when forces are applied during operation. By enabling rotational movement, the squeegee can conform to surface variations and accommodate operational forces through controlled rotation, significantly reducing the wear that would result from repeated flexing of a fixed squeegee and thereby extending its service life.
Data Source
AI summary
A vacuum accessory includes a nozzle body and a squeegee attachment assembly. The squeegee attachment assembly includes a housing selectively connectable to the nozzle body and defining a suction inlet and a squeegee assembly rotatably connected to the housing such that the squeegee assembly is rotatable relative to the suction inlet. The squeegee assembly is at least partially disposed within the suction inlet and rotatable between a forward position, in which the squeegee assembly occludes a forward side of the suction inlet, and a rearward position, in which the squeegee assembly occludes a rearward side of the suction inlet.