Offset Staple Collation Structure for Higher Pullout Resistance
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Solution Overview
Problem
Conventional staples lack sufficient pullout force resistance, making them prone to removal from workpieces, especially when used in applications requiring high attachment strength.
Innovation Solution
A staple collation design featuring a first staple and an adjacent second staple, offset in both lateral and vertical directions, with an adhesive material connecting them, and a crown section with specific geometric features such as diamond-shaped curves and inclined leg sections, which enhance the staple's engagement with the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional single staples are used, then the device complexity is low, but the pullout force resistance is insufficient
Solution Approach 1:
The patent combines multiple staples (first staple and second staple) into a single collation unit, merging their functions to achieve higher pullout force resistance. The staples are positioned at different locations and orientations within the same collation, allowing them to work together to resist removal forces more effectively than a single staple could alone.
Solution Approach 2:
The patent introduces vertical offset between the first and second staples, adding a vertical dimension to the staple arrangement. This vertical separation allows the staples to engage the workpiece at different depths and locations, creating a more robust attachment that resists pullout forces through three-dimensional engagement rather than simple planar attachment.
2Strength
If barbed staples are used to increase pullout force, then the attachment strength improves, but the ease of manufacture decreases
Solution Approach 1:
The patent divides the attachment function into multiple separate staples within one collation, each with simpler individual structures. Rather than manufacturing one complex barbed staple, the system uses multiple simpler staples positioned strategically, reducing the manufacturing complexity of each individual component while maintaining overall attachment strength.
Solution Approach 2:
The patent applies different structural characteristics to different staples within the collation. The first and second staples can have different orientations, positions, and leg configurations optimized for their specific locations, allowing each staple to contribute differently to the overall attachment strength without requiring all staples to be complex barbed designs.
3Strength
If multiple staples are collated closely together, then the attachment strength increases, but the device complexity increases
Solution Approach 1:
The patent resolves the complexity issue by arranging multiple staples in three-dimensional space with vertical offset, rather than simply placing them side-by-side in a single plane. This vertical separation creates a more organized and manageable collation structure that is easier to manufacture and handle while still achieving the goal of multiple attachment points for increased strength.
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 design significantly increases the pullout force required to remove the staples from the workpiece, ensuring secure attachment and preventing unwanted removal by creating a strong frictional engagement with the workpiece.
Implementation Method 1
an adhesive material coupling the first staple to the second staple
Implementation Method 2
creating a strong frictional engagement with the workpiece
Data Source
AI summary
A staple collation includes a first staple, an identical second staple adjacent the first staple, and an adhesive material coupling the first staple to the second staple. Each of the first staple and the second staple includes a crown section having opposite ends and a pair of leg sections extending from the opposite ends of the crown section. The second staple is offset from the first staple in a first, lateral direction, and the second staple is offset from the first staple in a second, vertical direction that is perpendicular to the lateral direction.