Dust Extraction Attachment for Rotary Tool with Multi-Port Suction
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Solution Overview
Problem
Existing dust and debris extraction devices for demolition tools are inadequate as they fail to collect incidental dust and debris, are not interchangeable between power tools, are cumbersome to use, and can damage the tool due to improper attachment methods, and obstruct the operator's view.
Innovation Solution
A dust and debris extraction device that attaches to demolition tools, featuring a sleeve for the machining tool, a suction end with multiple port openings, and a spring for free-floating support, allowing for effective dust collection from multiple directions without obstructing the operator's view and being adaptable to various power tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing dust extraction devices are used, then dust collection is provided, but they only collect dust from the direct strike area and fail to collect incidental dust from debris sliding and landing to the sides or behind the chisel
Solution Approach 1:
The patent transitions from single-point dust collection to multi-dimensional collection by positioning suction ports at the front, sides, and rear of the attachment device. This spatial arrangement creates a three-dimensional dust collection zone that captures dust particles regardless of their trajectory, solving the limitation of only collecting dust from the direct strike area.
Solution Approach 2:
The dust collection system is divided into multiple independent suction zones with separate ports located at different positions (front, sides, rear). Each suction port independently captures dust from its specific zone, and the combined effect provides comprehensive coverage of the entire work area, including incidental dust that escapes the direct strike zone.
2Reliability
If purpose-built dust extraction devices are designed for specific chipping hammers, then dust extraction is provided, but the devices are not interchangeable between different power tools
Solution Approach 1:
The attachment device incorporates a universal mounting mechanism that can interface with various chipping hammer types. The sleeve design with adjustable positioning and multiple attachment points allows the same dust extraction device to be reliably mounted on different power tool models, eliminating the need for tool-specific custom designs while maintaining effective dust extraction.
3Reliability
If existing dust extraction devices are attached to demolition tools, then dust collection is provided, but the device must be removed and re-installed several times a day to lubricate the chisel
Solution Approach 1:
The attachment device is segmented into a permanent mounting portion and a removable chisel holder portion. The chisel holder can be quickly detached and reattached without removing the entire dust extraction device from the power tool. This allows operators to maintain chisels in the field by simply replacing the chisel holder assembly, minimizing operational interruptions while maintaining reliable chisel lubrication capability.
4Quantity of substance
If positive pressure exhaust is implemented with the shaft/housing of the demolition tool, then dust extraction is provided, but dust is drawn into the demolition tool causing damage
Solution Approach 1:
The dust extraction system is completely separated from the power tool housing and implemented as an external attachment device. Suction ports are positioned around the chisel strike area, and dust is extracted externally before it can be drawn into the power tool's internal mechanisms. This physical separation eliminates the harmful effect of dust ingestion while maintaining effective dust extraction capability.
5Quantity of substance
If suction hose is attached directly to the demolition tool, then dust extraction is provided, but the hose becomes easily dislodged
Solution Approach 1:
The suction hose connection is nested within a protective housing structure on the attachment device. The hose connects to a recessed port that is shielded by the device housing, preventing accidental dislodgement. This nested arrangement secures the hose connection while maintaining access for intentional disconnecting, solving the reliability issue of hose detachment during operation.
6Quantity of substance
If multiple chambers are incorporated for thin debris, then debris extraction is provided, but thin debris becomes trapped and stuck requiring disassembly
Solution Approach 1:
The attachment device incorporates flexible, smooth-walled internal passages without sharp corners or crevices where thin debris could become trapped. The streamlined internal geometry allows thin materials like vinyl and fabric to pass through freely. Combined with easy-access removable components, this design enables simple maintenance without complex disassembly procedures.
7Quantity of substance
If large extraction devices are used, then dust extraction is provided, but the device blocks the user's view making it difficult to operate
Solution Approach 1:
The dust extraction device uses a distributed array of small suction ports positioned at critical locations around the chisel strike area rather than a single large collection chamber. This localized port distribution provides effective dust extraction while maintaining a compact, low-profile attachment that does not obstruct the operator's line of sight to the work area.
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 device effectively collects dust and debris from the work area, including airborne and incidental particles, without obstructing the operator's view and is adaptable to different power tools, reducing downtime and tool damage.
Implementation Method 1
a spring may be provided between the body and the machining device. The spring maintains the body at a predetermined distance apart from the machining device and also provides a cushion to hard blows dealt to the debris extraction device during operation.
Implementation Method 2
An extraction end on the body is configured for attachment to a suction device, such as a vacuum hose, in fluid communication with the internal cavity.
Data Source
AI summary
A dust and debris extraction device for the purpose of capturing dust and debris created by a chisel held by a power tool has an opening for a chisel to pass through at the front and is guided upward by a sleeve that passes out the top of the body of the device. The extraction end of the device has a locking mechanism to keep a hose going to a negative air source attached. The dust and debris extraction device may either free float on the shank of the chisel or be fixed to the power tool with a bracket.