Drive Adaptor for Helical Fastener Insertion
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Solution Overview
Problem
Existing helical fastening systems with telescopic driving tools are costly, cumbersome, and pose health and safety risks due to their complexity and length, making them impractical for widespread use in securing construction layers.
Innovation Solution
A solid helical fastener and drive adapter system that allows for efficient insertion and recessing without telescopic mechanisms, using a rigid adapter with a reduced diameter driving shank and abrasive outer periphery to transmit axial force and rotate independently, enabling rapid and secure fastening with reduced tooling costs and improved safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If telescopic driving mechanisms are used to recess helical fasteners into pilot holes, then fastener insertion capability is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the telescopic mechanism from the driving tool, using only a simple adapter that fits over the fastener shaft. The recessing function is achieved by the adapter's geometry rather than complex telescopic workings, eliminating the need for elaborate mechanisms while maintaining fastener insertion capability.
Solution Approach 2:
Instead of using a telescopic mechanism to actively recess the fastener, the patent inverts the approach by using a fixed-length adapter where the fastener is driven to the same level as the adapter end. The recessing effect is achieved passively through the adapter design rather than active telescopic movement.
2Ease of operation
If telescopic driving tools are used to drive helical fasteners, then fastener recessing is achieved, but tool length and weight increase making the tool cumbersome
Solution Approach 1:
The patent removes the telescopic extension components from the tool assembly, using a compact fixed-length adapter instead. This dramatically reduces the overall tool length and weight while maintaining the ability to drive fasteners to the required depth and achieve proper recessing.
Solution Approach 2:
The patent inverts the traditional approach by using a fixed-length adapter where the fastener length matches the adapter length, eliminating the need for telescopic extensions. This reduces tool assembly length while achieving the same fastener installation result.
3Productivity
If impact-driven telescopic tools are used to recess fasteners, then fastener installation is achieved, but damage to hosting layer increases due to pounding confrontation
Solution Approach 1:
The patent inverts the recessing mechanism from active pounding (telescopic confrontation) to passive alignment. The adapter and fastener are driven together to the same level through controlled impact, eliminating the additional pounding confrontation that causes hosting layer damage while maintaining installation productivity.
Solution Approach 2:
The patent employs a shouldered adapter design that controls the driving process and prevents excessive impact forces. The shoulder provides a reference surface that limits the driving depth, cushioning the impact and preventing damage to the hosting layer while maintaining fastener installation rate.
4Ease of operation
If complex telescopic mechanisms are used for fastener driving, then fastener recessing is achieved, but tooling cost increases to around one hundred and seventy five US dollars
Solution Approach 1:
The patent extracts the complex telescopic mechanism from the tool design, using a simple fixed-length adapter instead. This dramatically reduces manufacturing complexity and cost while maintaining the fastener recessing function through geometric design rather than mechanical complexity.
Solution Approach 2:
The patent employs a simple, inexpensive adapter design that can be manufactured at low cost. The adapter is a basic machined component without complex internals, making it economically viable even for single-use or limited-life applications, thereby reducing tooling cost significantly.
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 system achieves rapid insertion rates, secure keying, and reduced tooling costs, allowing for efficient and safe connection of construction layers with improved usability in confined spaces and reduced risk of operator fatigue and injury.
Implementation Method 1
a drive adaptor for transmitting at least axial force from an impact-energy driving machine to a driving shank of a helical profiled fastener... including an abrasive outer periphery
Data Source
AI summary
A drive adapter (21) for transmitting at least axial force from an impact-energy driving machine (25) to a driving shank (4) of a helical profiled fastener (1). The drive adaptor (21) includes a substantially rigid body having a tail end (22) arranged to be engaged and driven by the impact-energy driving machine (25), and a leading end (24) including an axial recess that is arranged to receive and drivingly engage the driving shank (4) of the helical profiled fastener (1) in a manner that axially confines the fastener (1) and aligns it longitudinally with the adaptor (21).