Polygonal Shank Anchor With Elastic Latching Pieces
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Solution Overview
Problem
Conventional anchors require a large force for fastening due to their structure, which either results in inadequate strength when using fewer elastic latching pieces or excessive force when using more, failing to balance high holding force with ease of attachment.
Innovation Solution
An anchor design featuring a male member with legs and a female member with a flange and shank, where the shank's cross-section is polygonal, and elastic latching pieces extend outward to prevent displacement, allowing for secure clamping with minimal insertion force by forming recesses and providing slanting parts for provisional connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If more elastic latching pieces are used to increase holding force, then fastening strength is improved, but the force required for attachment increases excessively
Solution Approach 1:
The shank is divided into multiple surfaces with each surface containing a limited number of elastic latching pieces (typically 2-3 per surface). This segmentation allows the total holding force to be distributed across multiple engagement points rather than concentrating all latching pieces in one location, achieving high overall strength while keeping the force required at each insertion point manageable.
Solution Approach 2:
The invention transitions from a conventional single-plane latching structure to a multi-surface polyhedral shank structure. By distributing elastic latching pieces across multiple surfaces of the polygonal shank, the attachment process engages latching pieces in sequence across different dimensional planes, reducing the peak force required while maintaining cumulative holding strength.
2Ease of operation
If fewer elastic latching pieces are used to reduce attachment force, then ease of operation is improved, but fastening strength becomes inadequate
Solution Approach 1:
The shank surface is segmented into multiple zones, each containing elastic latching pieces. This allows the attachment process to engage a manageable number of latching pieces (2-3 per surface) at each stage, making insertion easy while the cumulative engagement across all surfaces provides adequate overall strength.
Solution Approach 2:
Each surface of the polyhedral shank is designed with specific local characteristics, including the number and arrangement of elastic latching pieces tailored to that surface. This local optimization ensures that each insertion point requires minimal force while the aggregate of all surfaces provides sufficient total holding 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 anchor achieves high fastening strength with the ability to attach with relatively little force, ensuring secure attachment without excessive force requirements, even in high-strength applications.
Implementation Method 1
elastic latching pieces 89 flex inward in lateral directions in a space 84 provided in the shank 88 and then, after passing through the attachment hole 83, are restored to the condition whereby they are extended outward in lateral directions
Data Source
AI summary
A pin having a head and a plurality of legs extending from that head, and a bushing having a flange and a shank extending from that flange, are comprised. In the flange, holes for accepting a plurality of legs are provided in a plurality corresponding to the number of legs, and in the shank, corresponding spaces for accepting each of the legs which have passed through the holes are provided in a plurality corresponding to the number of legs. The cross-section of the shank is polygonal, spaces are disposed on the surfaces of the shank capable of forming that polygon, and elastic latching pieces extending outward in lateral directions are provided at positions adjacent to the flange in a plurality corresponding to the spaces. By inserting the legs into the spaces, the elastic latching pieces are prevented from being displaced in directions whereby they would approach the spaces.