Diamond-Crown Staple Structure for Higher Pullout Resistance
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Solution Overview
Problem
Conventional staples lack sufficient pullout force and security when attached to a workpiece, making them prone to removal and not effectively inhibiting unwanted extraction.
Innovation Solution
A staple design featuring a diamond-shaped crown section with specific curves and angled leg sections, along with an adhesive collation of staples, enhances the pullout force and security by creating a frictional engagement with the workpiece, preventing removal through diverging insertion and barb-like features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional staples are used, then the structure is simple and easy to manufacture, but the pullout force is insufficient and the staple is prone to removal
Solution Approach 1:
The staple is divided into distinct functional segments: the crown section with diamond-shaped geometry featuring multiple curves (first curve, second curve, third curve) and the leg sections extending from specific curves. This segmentation allows each part to contribute specifically to the overall function of increasing pullout resistance while maintaining manufacturing simplicity.
Solution Approach 2:
The diamond-shaped crown section employs asymmetric curve configurations where the first curve, second curve, and third curve have different geometries and positions. This asymmetry creates uneven stress distribution and frictional engagement with the workpiece, significantly enhancing pullout force compared to symmetric conventional staples.
2Strength
If barbed staples are used, then the pullout force is increased, but the staple structure becomes more complex
Solution Approach 1:
The staple utilizes multiple curved geometries including the first curve, second curve, and third curve in the diamond-shaped crown section. These curved features create frictional engagement and mechanical interlocking with the workpiece, achieving barbed-staple-level pullout resistance through geometry rather than protruding barbs, thereby simplifying the overall structure.
3Reliability
If multiple staples are collated with adhesive material, then the security and pullout force are enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
Multiple identical staples are collated together using adhesive material to form a unified collation unit. This merging of multiple staples into a single functional unit enhances security and pullout force while maintaining ease of manufacture through standardized identical staple components that can be efficiently assembled.
Solution Approach 2:
The collation process changes the physical state of the adhesive material from liquid to bonded state, creating a permanent connection between identical staples. This parameter change enables secure collation while maintaining manufacturing efficiency through automated adhesive application and curing processes.
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
The staple design significantly increases the pullout force and security by ensuring the staple is firmly embedded in the workpiece, requiring a tool to remove it, thus preventing unwanted extraction.
Implementation Method 1
an adhesive material coupling the first staple to the second staple
Implementation Method 2
enhances the pullout force and security by creating a frictional engagement with the workpiece
Data Source
AI summary
A staple includes a crown section having diamond shaped with a first curve, a second curve, and a third curve representing three points of a diamond. The crown section having opposite ends. A pair of leg sections extend from the opposite ends of the crown section.