Scraping Blade Fastening for Tool-Free Floor Washer Maintenance
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Solution Overview
Problem
Current floor washing-drying machines have complex and time-consuming systems for attaching and detaching scraping blades, requiring tools and gloves, making maintenance difficult and inefficient.
Innovation Solution
A reversible hooking system using flexible belts with elastic ends and mushroom-shaped support elements for easy snap-engagement and disengagement of blades, eliminating the need for screws or mobile hooks and tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid locking means with screw-like mobile hooked devices are used to fasten blades, then the blades are securely attached to the support, but the assembly and disassembly operations become complex and time-consuming, requiring tools and gloves
Solution Approach 1:
The patent replaces complex mechanical locking systems (screws, mobile hooks) with a simplified elastic retention system. The elastic element (spring or elastomeric material) provides automatic mechanical retention through friction and elastic deformation, eliminating the need for threaded fasteners and mobile hooked devices. This substitution maintains secure blade attachment while enabling tool-free, glove-free installation and removal.
Solution Approach 2:
The patent changes the mechanical parameters of the fastening system by introducing elastic deformation and friction-based retention instead of rigid mechanical interlocking. The elastic element deforms to accommodate the blade and support structure, creating a secure fit through controlled elastic recovery and friction forces, rather than requiring precise geometric matching of rigid components.
2Reliability
If complex locking means are used to secure blades, then the blades remain firmly attached during operation, but the maintenance time and operational complexity increase significantly
Solution Approach 1:
The patent replaces time-consuming mechanical assembly operations with a simple elastic retention mechanism. The elastic element automatically secures the blade through deformation and friction, eliminating the need for multiple assembly steps, tool operations, and precision alignments required by traditional locking systems. This reduces maintenance time while maintaining reliable blade retention during operation.
3Reliability
If rigid locking mechanisms are used, then the blades are securely held in position, but the system requires additional tools and gloves for handling
Solution Approach 1:
The patent replaces complex rigid locking mechanisms with a simpler elastic retention system. The elastic element (spring or elastomeric material) provides secure blade positioning through friction and elastic deformation, eliminating the need for multiple locking components, adjustment mechanisms, and auxiliary tools. This reduces device complexity while maintaining reliable blade positioning.
Solution Approach 2:
The elastic element performs multiple functions automatically: it secures the blade, provides positioning, and enables easy removal. The system is self-contained and self-explanatory, requiring no additional tools or specialized handling equipment. The elastic retention mechanism inherently guides the blade into the correct position and maintains it securely during operation.
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
Simplifies maintenance by allowing quick and tool-free assembly and disassembly of blades, ensuring efficient compression and adherence without compromising reliability, reducing handling complexity and time.
Implementation Method 1
one end of which is provided with an elastic end portion having a slot
Data Source
AI summary
A washing-drying machine including a scraping device including a reversible fastening system of scraping blades. The reversible fastening system makes it possible to apply the scraping blades to the scraping device in a simple and safe way and as simply to remove them to clean them or replace them when worn out through a flexible fastening mechanism including holes for engaging with support elements provided on the scraping device, and including at least an elastic end portion with a slot for engaging with the undercut of a corresponding locking element, formed in the proximity of end portions of the support.