Nail Ejection Nose Structure for Dust-Resistant Fastener Driving
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Solution Overview
Problem
When driving nails using a fastener machine, swirling dust enters the ejection unit and can adhere to the mechanism, making it difficult to operate.
Innovation Solution
The ejection unit design includes a flat portion, receded portion, and cutout portion on the end surface, which guides dust away from the mechanism and prevents it from entering the supply unit, ensuring easy discharge and maintaining the machine's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ejection unit operates normally to eject fasteners, then the fastening function is achieved, but dust enters the ejection unit and adheres to the mechanism making it difficult to operate
Solution Approach 1:
The patent extracts the harmful dust from the ejection unit through a dedicated dust discharge port, separating the dust discharge function from the fastener ejection function. This allows dust to be removed from the system without affecting the normal fastening operation.
Solution Approach 2:
The end surface of the ejection unit is segmented into multiple functional regions: a flat portion for stable operation, a receded portion to guide dust flow, and a cutout portion serving as a dust discharge port. This segmentation allows each region to perform its specific function independently.
2Object-affected harmful factors
If the end surface is designed with multiple portions to guide dust, then dust discharge is improved, but the structure becomes more complex
Solution Approach 1:
The end surface is divided into three distinct portions (flat portion, receded portion, and cutout portion), each serving a specific function in dust management while maintaining structural integrity. This segmentation achieves effective dust discharge without requiring additional external components.
Solution Approach 2:
The end surface structure serves multiple functions simultaneously: the flat portion provides operational stability, the receded portion guides dust flow, and the cutout portion discharges dust. This multi-functionality is achieved within a single integrated component, avoiding increased overall device complexity.
Data Source
AI summary
A working machine includes a striking unit, an ejection unit, and a supply unit. The ejection unit ejects a nail, struck by the striking unit, to a lower side along a virtual axis extending in an up-down direction. The supply unit is on a back side relative to the ejection unit. The ejection unit has an end surface at a lower end portion. The end surface has flat, receded, and cutout portions. The flat portion is on a front side relative to the axis, and extends to surround the axis. The receded portion is on a back side of the axis, and located above the flat portion. As viewed in a left-right direction, the cutout portion is located between the flat and receded portions in a front-back direction, and spaced from a virtual line connecting the back end of the flat portion and the front end of the receded portion.