Dual-Component U-Base Fastener for Mixed-Material Panel Retention
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Solution Overview
Problem
Existing U-base fasteners face challenges in compatibility with various component materials and applications, often leading to issues such as plastic deformation of panels and damage to ribs due to single-material designs, and limitations in securing components without window-engaging features.
Innovation Solution
A dual component U-base fastener comprising a u-shaped outer component with rib retention barbs and a u-shaped inner component with aperture retention wings, made of different structural materials, allowing secure attachment to components with varying materials and shapes without requiring window-engaging mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-material U-base fastener is used, then the design is simple and manufacturing is easy, but it causes plastic deformation of panels and damage to ribs due to incompatibility with various component materials
Solution Approach 1:
The U-base fastener is divided into two separate components: an outer component and an inner component. The outer component has a U-shape with a central aperture and includes features like retention barbs and flanges. The inner component is inserted through the aperture and includes retention wings that engage with the panel. This segmentation allows each component to be optimized for specific functions and material compatibility, preventing damage to the secured components while maintaining ease of manufacture through separate production processes.
2Device complexity
If a single-material U-base fastener is used, then the structure is simple, but it limits compatibility with a variety of component materials and applications
Solution Approach 1:
The fastener system uses composite construction by combining an outer component made of one material with an inner component made of a different material. This allows the outer component to provide structural support and anchoring, while the inner component can be made from a material specifically compatible with the panel being secured. This composite approach enhances versatility and compatibility across different application scenarios without significantly increasing overall structural complexity.
Solution Approach 2:
Different portions of the fastener system are made from different materials optimized for their specific functions. The outer component may use a material suitable for engagement with structural elements, while the inner component uses a material compatible with the panel material (metal, plastic, wood, or composite). This local optimization of material properties allows the fastener to adapt to various component materials and applications while maintaining a relatively simple overall structure.
3Ease of operation
If conventional U-base fasteners are used, then installation is straightforward, but they cannot securely retain components without window-engaging features
Solution Approach 1:
The inner component is nested within the outer component during installation. The inner component passes through the central aperture of the outer component and is positioned such that its retention wings extend through the panel opening. This nested configuration allows the fastener to securely retain components with various cross-sectional shapes (rectangular, circular, oval, or irregular) without requiring window-engaging features, while maintaining straightforward installation procedures.
Data Source
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AI summary
A dual component U-base fastener includes a u-shaped outer component comprising at least one rib retention barb and a u-shaped inner component comprising at least one aperture retention wing. The outer component and the inner component are separate and are coupled together to create an assembled unit defining an interior rib receiving cavity with the at least one rib retention barb extending into the interior rib receiving cavity and the at least one aperture retention wing of the inner component extending exteriorly from the outer component.