Integrated Shoe Cleaner Housing for Liquid Debris Collection
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Solution Overview
Problem
Existing shoe cleaning apparatuses are ineffective in climates with snow and salt, as they often fail to contain liquids and have insufficient capacity for debris collection, and their designs are cumbersome and prone to corrosion.
Innovation Solution
A compact, lightweight shoe cleaning apparatus with an integral plastic housing that includes a rotary brush and a refuse receptacle, where the brush is supported on the perimeter walls and driven by a motor, allowing for efficient liquid debris collection and easy emptying, with a corrosion-resistant design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a separate housing and refuse receptacle design is used, then the capacity for liquid debris collection is improved, but the device complexity and ease of operation deteriorate due to cumbersome separation requirements
Solution Approach 1:
The patent integrates the refuse receptacle directly into the housing structure, forming a unified single-piece construction. The housing itself serves as the containment structure for liquid debris, eliminating the need for separate receptacles that must be detached and emptied. This merging of functions allows the housing to simultaneously provide structural support and waste containment, greatly simplifying the emptying operation.
2Strength
If sheet metal construction is used for housing and refuse receptacle, then the structural strength is improved, but the reliability deteriorates due to corrosion from liquid and salt exposure
Solution Approach 1:
The patent employs a plastic material construction for the housing and refuse receptacle integration. This plastic material provides both the necessary structural strength to support the rotary brush and drive motor while simultaneously offering inherent corrosion resistance to liquid and salt exposure. The composite nature of the integrated plastic structure eliminates the corrosion vulnerability inherent in sheet metal constructions.
3Quantity of substance
If a large refuse receptacle is integrated into the housing, then the liquid debris collection capacity is improved, but the weight of the apparatus increases
Solution Approach 1:
The refuse receptacle is merged with the housing structure itself, forming a single integrated component rather than a separate addition. This integration allows the housing to serve dual purposes: providing structural support for the motor and brush assembly while simultaneously forming the liquid containment vessel. The result is a compact design that maximizes debris collection capacity without proportionally increasing overall weight.
4Reliability
If an integral housing construction is used, then the corrosion resistance is improved, but the manufacturing precision requirements worsen due to single-piece molding complexity
Solution Approach 1:
While the housing and refuse receptacle are integrated, the design incorporates a removable cover or access point that segments the assembly for manufacturing and maintenance purposes. This allows the main housing body to be molded as a single corrosion-resistant piece while providing practical access for motor assembly and brush replacement. The segmentation approach balances the benefits of integral construction with manufacturing and serviceability requirements.
Data Source
AI summary
A footwear cleaning apparatus has a housing formed of a single hollow molded plastic body. A rotary brush is rotatably supported on laterally opposed walls of the housing so as to partially protrude upwardly through an opening in the top side of the housing. A motor mounted alongside the housing drives rotation of the rotary brush by directly coupled bevelled gears on the motor output and rotary brush respectively. A lower portion of the housing defines a refuse receptacle which spans the full length and width of the housing and is suitable for containing liquid and other debris removed from footwear engaged with the rotary brush. A rear discharge spout mounted in a rear perimeter wall of the housing permits the contents of the refuse receptacle to be discharged therethrough.