Modular Eraser Assembly with Replaceable Inserts to Reduce Waste
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Solution Overview
Problem
Conventional erasers for black, white, and glassboards have limited durability, leading to reduced cleaning capacity over time and resulting in waste and inventory management issues due to the non-removable eraser surface.
Innovation Solution
An eraser assembly with a housing, tray, and coupler that allows for the easy replacement and storage of eraser inserts, enabling the user to extend the eraser's lifespan by swapping the eraser pad, reducing waste and inventory costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the eraser surface is integrally formed with the eraser body, then the eraser structure is simple and durable, but the useful life is limited and replacement waste increases
Solution Approach 1:
The eraser is divided into two separable components: a reusable body and a replaceable insert containing the eraser surface. This segmentation allows the eraser surface to be replaced independently when worn, extending the overall useful life while maintaining a simple integrated structure for the body.
Solution Approach 2:
The replaceable insert design enables selective discarding of only the worn eraser surface portion while recovering and reusing the durable eraser body. This reduces waste compared to discarding the entire eraser and lowers long-term costs.
2Reliability
If the entire eraser is frequently replaced, then the board cleaning capacity is maintained, but waste and expense increase
Solution Approach 1:
By segmenting the eraser into a permanent body and a consumable insert, the system maintains reliable board cleaning capacity through insert replacement while minimizing waste by preserving the reusable body components.
Solution Approach 2:
The insert design allows users to discard only the depleted eraser surface material while recovering the functional body, tray, and coupler components for continued use, directly reducing waste and expense.
3Device complexity
If the eraser surface is non-removable, then the eraser structure is simple, but inventory management becomes difficult
Solution Approach 1:
The segmented design with standardized inserts enables flexible inventory management where schools or offices can stock multiple inserts for different board types while using a single reusable body, improving adaptability without significantly increasing structural complexity.
Data Source
AI summary
An eraser assembly is provided that includes a housing, a tray, a coupler, and an eraser insert. The housing has a concave shape including an interior portion. The tray has a retaining portion disposed in the interior portion of the housing and a mounting portion disposed opposite the retaining portion. The coupler is configured to releasably hold the tray to the housing. The eraser insert is configured to be mounted to the mounting portion. An eraser insert is also provided that includes a first side and a second side, an eraser pad, and a coupler. The first side includes a mounting surface and an eraser pad is disposed on the second side. The coupler is disposed on or about the mounting surface and is configured to detachably connect the eraser insert to an eraser assembly at the mounting surface.