Sliding Dust Collector Layout for Narrow-Space Power Tool Drilling
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Solution Overview
Problem
Conventional dust collectors for electric power tools are bulky, prone to damage, and experience reduced operability and accuracy due to exposed guiding components, leading to tangles and looseness when used in narrow spaces.
Innovation Solution
A compact dust collector design featuring a tubular sliding portion with a rail-shaped guided portion and a metallic guiding structure that is positioned below the tool bit, utilizing a telescope structure and spiral spring for smooth operation, and a tapered flow path outlet to maintain dust collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the guiding portion and guided portion are disposed on both right and left sides of the ventilation member, then the guiding accuracy is improved, but the device dimension increases in the right-left direction causing poor operability in narrow spaces
Solution Approach 1:
The patent applies asymmetry by positioning both the guiding portion and guided portion exclusively on the lower side of the ventilation member rather than symmetrically on both right and left sides. This asymmetric arrangement maintains guiding accuracy through proper alignment while reducing the device's right-left dimension, enabling better operability in narrow spaces where the ventilation member slides.
2Device complexity
If the adjusting member and guide rail are exposed on side surfaces, then the structure is simplified, but the components are prone to damage from floor surface contact
Solution Approach 1:
The patent relocates the guiding portion and guided portion from the horizontal side surfaces to the vertical lower side of the ventilation member. This dimensional change moves the components from a vulnerable horizontal exposure to a protected vertical position, preventing contact with the floor surface during sliding operations while maintaining the structural simplicity of the guiding mechanism.
3Device complexity
If the guiding portion and guided portion are arranged at positions apart from one another, then the structure is simplified, but the slidability decreases due to tangle and looseness
Solution Approach 1:
The patent merges the guiding portion and guided portion into a closely integrated arrangement on the lower side of the ventilation member. By positioning these components adjacent to each other rather than apart, the guiding relationship becomes more precise and stable, eliminating tangle and looseness that would degrade slidability, while the overall structure remains simple through this consolidated configuration.
Data Source
AI summary
A dust collector for an electric power tool includes a main body case, a tubular sliding portion, and a dust collection portion. The main body case is mountable to an electric power tool. The tubular sliding portion is disposed on the main body case. The sliding portion includes a nozzle on a front end thereof. The nozzle includes a suction opening. The dust collection portion is configured to accumulate dust suctioned from the nozzle. The sliding portion includes a guided portion supported by a guiding portion disposed on the main body case. The guided portion is supported slidably in a front-rear direction, and the guiding portion and the guided portion are disposed in a region on a half side with respect to a line on a cross section passing through a center of the sliding portion.