Dust Extractor Fastening With Form-Force Zero-Play Mounting
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Solution Overview
Problem
Existing dust extraction systems for hand-held power tools lack a secure and tool-free detachable connection method that ensures zero-play mounting and compatibility with various power tool designs, affecting the stability and ease of use.
Innovation Solution
A fastening device with a dual connection system using form and force closure, featuring guide elements and a locking unit, which includes a second connection unit with a self-latching mechanism and an ancillary handle for secure attachment and adjustable positioning, ensuring stable and tool-free connection to hand-held power tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a single connection unit is used to attach the dust extraction device to the hand-held power tool, then the device complexity is reduced, but the mounting stability and play prevention are insufficient
Solution Approach 1:
The connection system is divided into two distinct connection units: a first connection unit that provides form closure (preventing movement in specific directions through geometric fitting) and a second connection unit that provides force closure (preventing movement through friction and clamping force). This segmentation allows each unit to specialize in a particular type of constraint, achieving comprehensive stability without requiring a single overly complex connection mechanism.
2Ease of operation
If a tool-free detachable connection is implemented, then the ease of operation is improved, but the connection reliability and security are reduced
Solution Approach 1:
The fastening elements are pre-configured in the connection units with predetermined engagement geometries and friction characteristics. When the dust extraction device is attached to the power tool, the connection is automatically secured through these pre-designed mechanical features without requiring additional fastening actions or tools. The preliminary design of the engagement surfaces and clamping mechanisms ensures reliable connection upon simple attachment.
3Manufacturing precision
If form closure is used to prevent movement in specific directions, then the mounting precision is improved, but the adaptability to different power tool designs is reduced
Solution Approach 1:
The connection units are designed with universal engagement features that can accommodate various power tool housing shapes and sizes. The form closure elements use standardized geometric interfaces that can adapt to different tool designs while maintaining precise mounting. The force closure mechanism provides additional compliance to accommodate variations in tool geometry, allowing the same dust extraction device to securely attach to multiple power tool models.
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 solution provides a secure, tool-free, and adjustable connection that enhances the stability and compatibility of dust extraction devices with various hand-held power tools, preventing unwanted detachment and allowing optimal positioning.
Implementation Method 1
a first connection unit for connecting the dust extraction device to the hand-held power tool by form closure
Implementation Method 2
a second connection unit for connecting the dust extraction device to the hand-held power tool by force closure
Implementation Method 3
designed to extract dust material by suction, for example drilling dust/grinding dust/sawdust
Data Source
AI summary
A fastening device for a dust extraction device is configured to detachably connect the dust extraction device to a hand-held power tool. The fastening device includes a first connection unit and a second connection unit. The first connection unit is configured to connect the dust extraction device to the hand-held power tool by form closure. The second connection unit is configured to connect the dust extraction device to the hand-held power tool by force closure.