Disc Grinder Dust Removal Assembly with Segmented Shroud
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Solution Overview
Problem
Existing dust removal devices for disc grinders are inadequate in completely evacuating dust and debris, often requiring multiple people for installation, and do not effectively utilize vacuum hoses for efficient collection, posing safety risks to workers.
Innovation Solution
A dust and debris removal assembly with a base portion attachable to a disc grinder's gear case, featuring a compartment and exhaust port in fluid communication with a vacuum hose, allowing for efficient collection of dust and debris through a conduit, and a top plate design that allows the disc or blade to rotate freely while maintaining exposure for substrate contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a vacuum is connected to the hand-held disc grinder to collect debris, then dust and debris can be removed during cutting operations, but prior art devices are unable to completely evacuate all dust and debris, resulting in some dust being jettisoned beyond the workable limits of the vacuum
Solution Approach 1:
The dust collection system is segmented into multiple functional components: a shroud that encloses the cutting area, a compartment that collects dust, and an exhaust port that directs dust to the vacuum. This segmentation allows each component to perform its specific function optimally, ensuring complete dust evacuation without relying on a single complex device
Solution Approach 2:
The patent introduces an intermediary collection compartment between the cutting area and the vacuum hose. Dust is first captured in this intermediate compartment, then directed through the exhaust port to the vacuum. This intermediary structure ensures that even fine dust particles are captured before being evacuated, improving complete dust collection reliability
2Object-affected harmful factors
If prior art dust removal devices are attached to hand-held grinders, then some dust collection is achieved, but these devices are difficult to attach to the hand-held grinder, sometimes requiring more than one person to install
Solution Approach 1:
The device is segmented into a base portion that attaches to the grinder and a top plate that can be separately installed. This segmentation allows for easier handling and installation, as each component is lighter and more manageable, enabling single-person installation while maintaining effective dust collection capability
Solution Approach 2:
The base portion is designed with universal attachment features that can be adapted to different hand-held grinder models. The mounting mechanism incorporates standard interface elements that facilitate easy attachment and detachment, making the device universally applicable and simple to install on various grinder types
3Object-affected harmful factors
If a shroud is positioned close to the blade to improve dust collection, then dust evacuation effectiveness increases, but the shroud may interfere with the blade rotation or substrate contact
Solution Approach 1:
The shroud is designed with local quality variations: it is open or has cutouts in areas where the blade rotates to prevent interference, while maintaining enclosed structures in areas where dust generation occurs. This localized design allows the shroud to be positioned close to the blade for effective dust capture without obstructing blade rotation or substrate contact
Solution Approach 2:
Instead of designing a fully enclosed shroud that might interfere with blade operation, the patent inverts the approach by creating an open shroud design with strategic cutouts. This inverted design philosophy allows the shroud to function as a dust collection guide rather than a restrictive enclosure, maintaining blade rotation freedom while improving dust capture effectiveness
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
The assembly effectively captures all dust and debris, is easy to install, and ensures safe operation by utilizing a vacuum to remove airborne particles, improving worker safety and operational efficiency.
Implementation Method 1
a conduit, for connecting a vacuum hose to the assembly, extends from the wall in fluid communication with the exhaust port
Data Source
AI summary
A dust removal assembly for use with a disc grinder includes a base portion with a member defining a major surface, a wall extending at least partially along an outer periphery of the major surface, an exhaust port contained within the wall, and a first ledge positioned proximate the exhaust port extending along the major surface. A top plate, attachable to the wall, includes a second ledge extending downward from a lateral edge toward the base portion such that the first ledge and the second ledge are positioned proximate to, and extend horizontally parallel to, one another. Both the first ledge and the second ledge are configured to permit a circular disc to travel therebetween. A compartment in fluid communication with an exhaust port is defined by the first ledge, the wall and a minor surface positioned below the major surface.