Dust Extractor Collar With Moveable Cover for Hole Cleaning
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Solution Overview
Problem
Existing dust extractors for drills, hammer drills, and hammers do not effectively clean holes created during operation, as they fail to efficiently remove debris and dust, leading to incomplete clearance and potential re-deposition of dust into the work surface.
Innovation Solution
A collar system with a drill passage and an internal extension that connects to a dust extractor, featuring a moveable cover and strategically angled apertures to enhance suction and debris clearance, along with a pressure release mechanism for easy detachment, ensures effective debris removal and hole cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dust extractor is mounted on a drill or hammer drill, then the dust extractor can be positioned close to the drilling operation, but the holes created during drilling cannot be effectively cleaned
Solution Approach 1:
The collar is divided into multiple functional sections: a drill passage for the drill bit, an internal passage connecting to the suction system, and a moveable cover with its own passage. This segmentation allows dust to be extracted from multiple locations (drill bit area and hole interior) simultaneously, effectively cleaning the entire hole while maintaining close positioning to the drilling operation.
2Productivity
If a moveable cover is added to cover the drill passage entrance, then debris can be contained and directed into the suction passage, but the device complexity increases
Solution Approach 1:
The cover is designed to be moveable rather than fixed, allowing it to be positioned to cover the drill passage entrance during operation to maximize debris containment and suction efficiency. The moveable nature also simplifies cleaning and maintenance, offsetting the added structural complexity with operational flexibility and improved productivity.
3Device complexity
If the cover is held in position by friction fit, then the structure remains simple, but the cover cannot be easily removed for cleaning
Solution Approach 1:
The collar system incorporates a pressure release mechanism that allows the cover to be easily removed and reattached by the user without special tools or complex mechanisms. The friction fit provides sufficient holding force during operation while allowing intentional removal when needed for cleaning, enabling the system to serve itself through simple user actions rather than requiring complex retention or release mechanisms.
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 system ensures thorough debris removal and hole cleaning by utilizing the venturi effect for efficient suction and a pressure release mechanism for easy operation, maintaining a clear working environment.
Implementation Method 1
a suction passage in communication with the internal passage to enable removal of debris from the hole
Implementation Method 2
utilizing the venturi effect for efficient suction
Data Source
AI summary
A collar system for a dust extractor is provided including: a collar including a drill passage extending through the collar and an extension forming an internal passage that connects at one end with the drill passage, the extension being attachable to a housing of the dust extractor to enable the internal passage to connect to a suction passage of the dust extractor; and a cover mounted adjacent an entrance of the drill passage, the cover being moveable between a first position where it covers the entrance and a second position where is remote from the entrance, wherein the cover comprises at least hole that passes through the cover.