Quick Release Squeegee Assembly for Floor Maintenance Vehicles
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Solution Overview
Problem
Existing squeegee assemblies in floor surface cleaning equipment are cumbersome to assemble and disassemble, especially in dirty environments, due to threaded fasteners that are difficult to work with and require multiple components for blade replacement, leading to time-consuming maintenance.
Innovation Solution
A quick release squeegee assembly with a single release latch and corresponding locating structures on the brush deck and frame that align and secure the squeegee assembly, allowing for easy attachment and detachment, reducing the need for complex threaded systems and facilitating faster blade replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If threaded fasteners are used to secure the squeegee assembly, then the connection is reliable, but the assembly and disassembly process becomes time-consuming and complex
Solution Approach 1:
The fastening system is segmented into a latch mechanism with multiple engagement points along the squeegee assembly. The latch can be actuated at any position to release the entire assembly, dividing the securement function into discrete locations while maintaining overall reliability. This allows the operator to quickly engage or disengage the squeegee by actuating the latch at a single location rather than manipulating multiple threaded fasteners.
Solution Approach 2:
The threaded fastener system is extracted and replaced with a latch mechanism that uses positive engagement through locating structures. The latch removes the need for threading operations entirely, extracting the time-consuming aspect of threaded fastening while maintaining secure connection through the locating structures that engage at multiple points along the assembly.
2Reliability
If multiple threaded fasteners are used to secure the squeegee assembly, then the connection is secure, but the device complexity increases
Solution Approach 1:
Multiple fastening functions are merged into a single latch mechanism. The latch combines the securing function at multiple locations along the squeegee assembly into one integrated component that engages with locating structures at various points simultaneously. This merging reduces the number of separate fastening components from multiple threaded fasteners to a single latch assembly.
Solution Approach 2:
The latch mechanism serves multiple functions: it secures the squeegee assembly at multiple locations, provides alignment through locating structures, and enables quick release through a single actuation point. This multi-functional design replaces the need for multiple specialized threaded fasteners, each requiring separate manipulation, with a universal latch system that handles all fastening and alignment functions.
3Strength
If threaded fasteners are used in the squeegee assembly, then the connection is strong, but the fasteners become contaminated in dirty environments
Solution Approach 1:
The threaded fastener system is extracted from the design, removing the components that are susceptible to contamination. The latch mechanism uses positive engagement through locating structures that do not require threading operations, thereby eliminating the threaded interfaces that would accumulate dirt and contaminants in the harsh cleaning environment.
Solution Approach 2:
The latch mechanism is designed as a simple, easy-to-clean component that can be quickly serviced or replaced if contaminated. Unlike threaded fasteners that trap contaminants in their threaded interfaces, the latch uses smooth engagement surfaces that can be easily wiped clean or replaced as needed, treating the fastening system as a maintenance-friendly component.
4Ease of operation
If a single release latch is used to secure the squeegee assembly, then the ease of operation is improved, but the reliability of the connection may be compromised
Solution Approach 1:
The connection reliability is segmented into multiple engagement points along the squeegee assembly. The single latch mechanism engages with locating structures at multiple discrete locations, distributing the securement function across several points. This segmentation ensures that failure at one engagement point does not compromise the overall connection, maintaining reliability while allowing single-point actuation for ease of operation.
Solution Approach 2:
The locating structures serve as intermediaries between the single latch mechanism and the squeegee assembly. These locating structures transfer the securing force from the single latch to multiple points along the assembly, acting as mediators that distribute the load and enhance connection reliability without requiring multiple latches or complex fastening systems.
Data Source
AI summary
A surface maintenance vehicle with quick release squeegee assembly and a method of connecting a squeegee assembly to the brush deck of a floor surface maintenance vehicle. A single release latch may be used to connect and disconnect the squeegee assembly and the brush deck. When engaged, corresponding locating structures on the brush deck and a frame of the squeegee assembly align the brush deck and the frame and provide points where the relative movement between the brush deck and frame are restricted.