Fastening Clip Assembly With Triangular Retention for Round Openings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fastener assemblies often provide insufficient retention strength and are limited in configuration, particularly for round openings, with many requiring multiple pieces and lacking secure retention mechanisms.
Innovation Solution
A fastening clip assembly with four retaining legs and a central pedestal that exerts a triangular retaining force, integrally molded as a single piece, providing four points of contact and secure retention within round openings, featuring a beveled lead-in nose for easy insertion and an annular seal for added security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pieces are used to form a fastener assembly, then the fastener can be adapted to different opening shapes, but the device complexity increases and manufacturing becomes more difficult
Solution Approach 1:
The patent combines multiple functional elements (retaining legs, central pedestal, bracing beam) into a single integrally molded fastener assembly. This unified structure eliminates the need for multiple separate pieces while maintaining the ability to adapt to different opening shapes through the geometric design of the integrated components.
Solution Approach 2:
The integrally molded fastener assembly performs multiple functions simultaneously: the retaining legs provide retention, the central pedestal provides structural support, and the bracing beam provides crush resistance. This multi-functional design achieves versatility without requiring separate components for each function.
2Device complexity
If a one-piece design is used, then device complexity is reduced and manufacturing is simplified, but retention strength is insufficient
Solution Approach 1:
While maintaining a one-piece integral structure, the fastener is segmented into distinct functional zones: four retaining legs for engagement, a central pedestal for support, and a bracing beam for structural reinforcement. This segmentation within integration allows the single piece to achieve high retention strength through optimized distribution of structural elements.
Solution Approach 2:
The fastener employs a composite structural design combining rigid retaining legs for secure engagement with a bracing beam that provides crush resistance. This composite approach within a single molded piece achieves both simplicity and high retention strength.
3Ease of manufacture
If retention structure is simplified, then manufacturing is easier, but retention strength becomes insufficient
Solution Approach 1:
The patent optimizes geometric parameters of the retaining legs and bracing beam to achieve high retention strength. The retaining legs are positioned and dimensioned to maximize engagement with the opening, while the bracing beam is configured to provide optimal crush resistance, all within a single molding operation.
Solution Approach 2:
The fastener design incorporates curved and angled surfaces on the retaining legs and bracing beam that optimize force distribution and engagement. These geometric features enhance retention strength while maintaining manufacturability through standard molding techniques.
4Ease of operation
If insertion force is reduced, then ease of operation improves, but retention strength may be compromised
Solution Approach 1:
The retaining legs are designed with dynamic characteristics that allow easy insertion through flexible deformation, then lock into position to provide high extraction resistance. The legs can elastically deform during insertion to reduce force requirements, then maintain rigid engagement during retention.
Solution Approach 2:
The fastener geometry includes lead-in surfaces and angled retention surfaces that guide insertion and progressively engage the opening. This preliminary action sequence reduces peak insertion force while ensuring proper alignment and progressive engagement for strong final retention.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A fastening clip assembly is configured to secure to a component, and may include four retaining legs that are configured to directly contact portions of the component to provide four points of contact with the component, and a central pedestal including a central beam and two angled retaining beams extending from the central beam. The two angled retaining beams are configured to exert a triangular retaining force into the component.