Rotary Fastener Tool with Segmented Engagement Shoulders
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tools are inefficient for installing fasteners with lag screw threads into fibrous materials like wood, requiring cumbersome methods and lacking suitable engagement features for hooks or eyebolts without a head feature.
Innovation Solution
A fastener driving tool with a loop portion defined by a closed contour and a shank, featuring a gap and various contour shapes (ellipse, oval, trapezoid, etc.) for engagement, and a drill bit design with shoulders and elongated bodies to accommodate different fastener sizes and types, allowing efficient driving in a rotary chuck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional tools are used to install fasteners with lag screw threads, then the installation process can be completed, but the method becomes ponderous and inefficient
Solution Approach 1:
The drill bit is segmented into multiple functional zones: a shank for attachment to the power drill, a neck section, top and bottom shoulders for engagement, and an elongated body with stepped drops. Each segment serves a specific function in the fastener installation process, allowing the tool to efficiently engage and drive different types of fasteners without requiring multiple different tools.
Solution Approach 2:
The drill bit design with multiple engagement features (top shoulder, bottom shoulder, elongated body with stepped drops) enables a single tool to accommodate various fastener sizes and types including hooks, eyebolts, and lag bolts. The stepped drops provide multiple engagement surfaces that can adapt to different fastener dimensions, making the tool universally applicable for installing various threaded fasteners into fibrous materials.
2Adaptability or versatility
If a single engagement feature is provided on the drill bit, then the tool structure is simple, but it cannot accommodate different fastener sizes and types
Solution Approach 1:
The drill bit incorporates a series of stepped drops along the elongated body, creating dynamic engagement surfaces at different heights and positions. These stepped features allow the tool to adapt its engagement point based on the size and type of fastener being installed, providing versatility without requiring multiple separate tools. The dynamic geometry of the stepped drops enables accommodation of various fastener dimensions.
3Length of moving object
If the drill bit shoulders are positioned close to the shank, then the tool is compact, but it cannot accommodate larger fasteners
Solution Approach 1:
The drill bit design extends the engagement features along the longitudinal axis through the elongated body with multiple stepped drops. Rather than increasing diameter or width, the solution adds length in a controlled manner with stepped features that provide engagement surfaces at different positions. This dimensional approach allows accommodation of larger fasteners while maintaining a relatively compact overall profile.
Data Source
AI summary
A fastener driving tool includes a loop portion defined by a closed contour having a proximal and a distal end. The loop portion defines a longitudinal internal dimension and is interrupted by a gap at a longitudinal distance from the proximal end. A shank is affixed to the proximal end of the loop, with the shank defining a longitudinal axis of rotation. According to preferable embodiments, the longitudinal distance from the proximal end to the gap is less than one-half the longitudinal internal dimension, and the closed contour of the loop may be selected from a set of contours such as an ellipse, an oval, an ovoid, a trapezoid, a trapezoid having stepped sides, and a rectangle.