Self-Expanding Clip With Offset Retention Shoulders
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Solution Overview
Problem
Existing clips for fastening articles to panels with holes are limited in accommodating a wide range of panel thicknesses, requiring multiple clip sizes, increasing manufacturing costs and inventory needs.
Innovation Solution
A clip with a self-expanding head featuring flexible beams with offset and aligned retention shoulders, along with a flexible lip and laterally spaced columns, allows for secure attachment to panels of varying thicknesses by reducing insertion forces while maintaining high retention forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional clips with fixed retention shoulder arrangements are used, then the clip structure is simple, but the clip can only accommodate limited panel thicknesses requiring multiple clip sizes
Solution Approach 1:
The clip employs flexible beams with retention shoulders that can dynamically adjust their position and orientation. The flexible beams are designed to bend and adapt to different panel thicknesses, allowing a single clip design to accommodate panels ranging from thin to thick configurations without requiring multiple fixed-geometry clip variants.
Solution Approach 2:
The retention shoulders on the flexible beams are positioned at different vertical offsets, allowing the clip to engage with panels of varying thicknesses. By changing which retention shoulder engages the panel back side based on thickness, the clip adapts its effective geometry to match the specific panel being fastened.
2Adaptability or versatility
If multiple clip sizes are used to accommodate different panel thicknesses, then each clip size is optimized for specific thicknesses, but manufacturing costs and inventory requirements increase
Solution Approach 1:
The clip design achieves multi-functionality by incorporating multiple retention shoulders on flexible beams that can engage with panels of different thicknesses. A single universal clip design replaces the need for multiple specialized clip sizes, allowing one clip type to perform the fastening function across the entire panel thickness range from 0.6mm to 5mm and beyond.
3Adaptability or versatility
If flexible beams with offset retention shoulders are used, then the clip accommodates wider panel thickness range, but insertion forces may increase
Solution Approach 1:
The self-expanding head is segmented into multiple flexible beams, each with retention shoulders at different vertical offsets. This segmentation allows the insertion force to be distributed across multiple beams and retention shoulders rather than concentrated on a single point, reducing the peak insertion force required while maintaining adaptability to various panel thicknesses.
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 clip effectively reduces the number of required clip sizes, decreases manufacturing costs, and minimizes inventory needs by securely fastening articles to panels within a wide thickness range, including 0.6 mm to 5 mm, while ensuring high retention even under pull-out forces.
Implementation Method 1
The flexible beams are collapsed as the self expanding head is pushed into the hole. When the retention shoulders pass through the hole, the flexible beams expand outwardly and engage the back side of the panel
Data Source
AI summary
A clip for fastening an article to a panel having a hole has a base and a self expanding head attached to the base. The self-expanding head has at least one column extending from the base to a platform that is spaced from the base. First and second flexible beams are attached to the platform at one end and to the base at an opposite end. The first flexible beam has a first plurality of retention shoulders and the second flexible beam has a second plurality of retention shoulders. Each plurality of retention shoulders includes at least one retention shoulder that is spaced from every other retention shoulder in a vertical direction.