Sliding Dust Collector for Power Tools
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Solution Overview
Problem
Existing dust collectors for electric power tools, such as drills, are limited by the main body case's restricted extension/contraction stroke, preventing the use of long bits during drilling operations beyond a certain depth due to the inability to achieve a sufficient extension/contraction stroke.
Innovation Solution
A dust collector design featuring a sliding portion with a guiding portion that allows the sliding portion to project rearward, enabling a larger extension/contraction stroke without being restricted by the main body case, and incorporating a dust collecting route that includes a flexible hose within the sliding portion to facilitate dust collection from long bits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the extension/contraction member is lengthened to increase the extension/contraction stroke for deep drilling, then the drilling depth capability is improved, but the device size and complexity increase
Solution Approach 1:
The extension/contraction member is designed to dynamically extend and contract along the guide cylinder, allowing the sliding portion to move forward and backward. This dynamic mechanism enables the stroke length to be adjusted during operation without permanently increasing the device size, resolving the contradiction between achieving deep drilling capability and maintaining compact dimensions.
Solution Approach 2:
The sliding portion is disposed to pass through the guide cylinder, creating a nested structure where the extension/contraction mechanism is housed within the main body case. This nesting allows the extension/contraction stroke to be achieved while keeping the overall device size compact, as the moving components are contained within the existing structure rather than adding external extensions.
2Adaptability or versatility
If the extension/contraction member is lengthened to support long bits, then the adaptability for different drilling depths is improved, but the ease of operation deteriorates due to increased device size
Solution Approach 1:
The dynamic extension and contraction of the sliding portion along the guide cylinder allows the device to adapt to different drilling depths by simply moving the sliding portion to the appropriate position, rather than requiring a permanently extended structure. This maintains operational convenience while achieving versatility for both shallow and deep drilling applications.
3Length of moving object
If the sliding portion is allowed to project rearward through the guide cylinder, then the extension/contraction stroke is increased for deep drilling, but the risk of interference with the electric power tool increases
Solution Approach 1:
The guide cylinder serves as an intermediary structure that guides and constrains the sliding portion's movement. It allows the sliding portion to extend forward for deep drilling while preventing uncontrolled rearward movement that could interfere with the electric power tool. The guide cylinder mediates between the need for extended stroke and the need to avoid interference.
Solution Approach 2:
The guide cylinder extracts and isolates the potential interference issue by providing a dedicated pathway for the sliding portion's rearward movement. This separates the extension/contraction function from the power tool operation space, allowing the sliding portion to move freely within the guide cylinder without affecting the power tool.
Data Source
AI summary
A dust collector for an electric power tool includes a main body case, a dust box, a sliding portion, and a dust collecting route. The main body case includes an exhaust port, the main body case being configured to be installed on an electric power tool. The dust box internally includes a filter. The sliding portion is disposed on the main body case. The sliding portion has a front end on which a nozzle with a suction opening is disposed. The sliding portion is slidable in a front-rear direction. The dust collecting route is from the suction opening to the exhaust port passing through the filter. The main body case includes a guiding portion through which the sliding portion passes, and the guiding portion allows the sliding portion to project rearward when the sliding portion slides.