Dust Collection Cup Layout for Compact Drilling Visibility
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Solution Overview
Problem
Existing dust collection cups for power tools, such as hammer drills, are oversized, which compromises viewability during operation and are not easily downsized while maintaining effective dust collection.
Innovation Solution
A dust collection cup design featuring a cylindrical attachment and a coaxial, thinner dust collector with a bayonet connection, a decentered connection port for a flexible hose, and a seal with a through-hole for the bit, allowing for a compact structure that improves viewability and ease of attachment/detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the connection port is located on the outer circumferential surface of the attachment at a position outward in the radial direction from the seal, then the dust collector can be downsized and viewability can be improved, but the connection port positioning becomes more complex
Solution Approach 1:
The connection port is positioned asymmetrically on the outer circumferential surface of the attachment, outward in the radial direction from the seal. This asymmetric positioning allows the dust collector to be downsized while maintaining proper connection functionality, resolving the contradiction between compact size and connection port accessibility.
2Reliability
If the dust collector is made larger to ensure effective dust collection, then dust collection efficiency is improved, but viewability during operation is reduced
Solution Approach 1:
The connection port is positioned in the radial direction outward from the seal, utilizing the radial dimension to accommodate the connection function. This dimensional arrangement allows the dust collector to be downsized in the axial direction, improving viewability while maintaining dust collection efficiency through proper seal and connection port geometry.
Data Source
AI summary
A dust collection cup includes a cylindrical attachment to cause a bit to extend through the attachment, a cylindrical dust collector located in front of the attachment to cause the bit to extend through the dust collector, a seal between the attachment and the dust collector and having a through-hole to receive the bit, and a connection port connectable to a dust collection hose and located on an outer circumferential surface of the attachment outward in a radial direction of the bit from the seal and rearward from the seal. The connection port has a distance in the radial direction of the bit from an axis of the attachment to an outermost position longer than a distance in the radial direction of the bit from the axis to a position on the outer circumferential surface of the attachment that is opposite to the outermost position from the axis.