Vacuum Drill Dust Extractor with Integrated Motor for Constant Suction
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Solution Overview
Problem
Existing vacuum drill dust extractors rely on drill speed for suction force, which is unreliable and varies with drill bit diameter, leading to inconsistent performance.
Innovation Solution
Equipping the piston unit with a dedicated drive motor and energy storage unit, such as a rechargeable battery, to maintain constant suction power independent of drill speed, along with a control device and air filter system for efficient dust collection and energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the induced draft blower is driven by the drill speed, then the device complexity is reduced, but the suction power becomes unreliable and varies with drill bit diameter
Solution Approach 1:
The drive system is segmented into two independent parts: the drill provides only axial feeding motion, while a separate integrated motor mounted on the piston unit provides rotational drive for the induced draft blower. This separation ensures that suction power remains constant and reliable regardless of drill speed variations.
Solution Approach 2:
The piston unit is equipped with its own integrated motor and energy storage unit (rechargeable battery), making it self-sufficient for driving the induced draft blower. This self-service capability eliminates dependence on drill speed and ensures consistent suction performance.
2Ease of operation
If the piston unit is made rotatable to simplify the drive mechanism, then the ease of operation is improved, but the suction power becomes dependent on drill speed
Solution Approach 1:
Instead of making the piston unit rotatable to simplify driving, the invention inverts the approach by providing a dedicated motor on the piston unit that rotates the impeller directly. The piston unit itself remains axially movable but not rotatable, separating the feeding function (axial motion) from the driving function (rotational motion).
3Reliability
If a dedicated motor and energy storage unit are added to the piston unit, then the suction power reliability is improved, but the device complexity increases
Solution Approach 1:
The motor and energy storage unit are merged into a single integrated assembly mounted on the piston unit. This combined design minimizes the increase in device complexity while ensuring reliable suction power, as both components work together as a self-contained drive system.
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
Ensures reliable and consistent suction power, reduces drill dust dispersion, and facilitates easy operation and maintenance with energy-efficient design.
Implementation Method 1
contains an induced draft blower device
Implementation Method 2
set against a stop on the housing side by means of a spring over which it engages
Implementation Method 3
an air filter is provided on the inlet side
Data Source
AI summary
In a vacuum drill dust extractor having a pot-shaped housing through which a rotatably drivable drill can be passed axially, and having a piston unit which is arranged axially displaceably in the housing, cooperates with a drill-side stop, contains an induced draft blower device and can be set against an associated stop on the housing side by means of a spring over which it engages, a high degree of reliability and operational safety are achieved in that at least one induced draft blower provided with its own drive motor and an energy storage unit provided with a charging socket and associated with each motor driving an associated induced draft blower are provided in the piston unit.