Nailer Inner Head Housing Segmentation for Smooth Sliding
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Solution Overview
Problem
The conventional pneumatic nailer's inner head housing design faces challenges in processing a smooth ring surface on the nail tip cover, leading to wear and tear of the air-resistant ring and a shortened shelf life due to the deep inner part requiring complex machining.
Innovation Solution
The design incorporates a fixed liner ring and a movable base with a smooth slot wall, eliminating the need for complex machining on the nail tip cover and incorporating a suppressing ring for positioning, along with a self-lubricant slot material to enhance smooth movement and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the nail tip cover is made of metal material and molded with a ring surface, then the structural needs are met, but the processing difficulty increases significantly and the air-resistant ring wears out quickly
Solution Approach 1:
The invention divides the inner head housing into two separate components: a fixed liner ring and a movable base. The fixed liner ring is installed in the nail tip cover and provides the smooth sliding surface, while the movable base contains the air-resistant ring. This segmentation transfers the machining requirement from the deep inner part of the nail tip cover to the fixed liner ring, which is easier to manufacture with a smooth surface.
Solution Approach 2:
The fixed liner ring acts as an intermediary component between the nail tip cover and the movable base. It provides the smooth sliding surface that the air-resistant ring needs to function properly, eliminating the need to machine the deep inner part of the nail tip cover directly. The fixed liner ring mediates the interaction between the movable base and the nail tip cover.
2Reliability
If the ring surface is made smooth to reduce wear, then the air-resistant ring longevity improves, but the manufacturing complexity and cost increase
Solution Approach 1:
By segmenting the inner head housing into a fixed liner ring and a movable base, the invention isolates the smooth surface requirement to the fixed liner ring only. This allows the smooth surface to be machined on a separate, accessible component rather than the deep inner part of the nail tip cover, reducing overall manufacturing complexity while ensuring the air-resistant ring's longevity.
Solution Approach 2:
The fixed liner ring is designed as a separate, replaceable component that can be manufactured more economically than machining the entire nail tip cover. While the fixed liner ring itself has a limited service life due to wear, it is cheaper and easier to replace than to machine a new smooth surface on the deep inner part of the nail tip cover, effectively reducing the overall system complexity and cost.
3Device complexity
If the fixed liner ring is positioned without a suppressing ring, then the device complexity reduces, but the positioning accuracy and smooth movement deteriorate
Solution Approach 1:
The suppressing ring acts as an intermediary positioning element between the fixed liner ring and the cylinder. It ensures that the fixed liner ring is correctly positioned and aligned, providing the necessary positioning accuracy for the movable base to slide smoothly. The suppressing ring mediates the positioning requirement without significantly increasing device complexity.
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
This design reduces processing costs, improves the smooth sliding movement of the movable base, and extends its shelf life by simplifying the manufacturing process and maintaining the air-resistant ring's integrity.
Implementation Method 1
The outside of the movable base and the air-resistant ring can be placed inside the slot of the fixed liner ring
Implementation Method 2
The pressure of the air inlet space B2 may push the inner head housing 10 upward, and press the spring 13 to accumulate restoring force
Implementation Method 3
The wall of the slot of the movable base that the movable base slides can be made by highly smooth material (such as POM), so that the wall of the slot may be self-lubricant without having to lubricate it
Implementation Method 4
the high pressure of its controlled air channel B1 is leaked instantly and becomes low pressure. The pressure of the air inlet space B2 may push the inner head housing 10 upward
Data Source
AI summary
The present invention provides a structure of the inner head housing, which is placed inside the nail tip cover. The structure includes a movable base of the air-resistant ring, which is placed inside the slot of the fixed liner ring. The resilient component is used to support the movable base towards the direction of the cylinder under normal circumstances. The fixed liner ring is a single component; therefore, it is easy to process and make it smooth. The inner side of the nail tip cover does not need to be processed; therefore, it greatly reduces cost of processing and becomes more practical.