Concealed Fastener Insert for Composite Panel Edge Bonding
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Solution Overview
Problem
Existing fastening systems for composite panel edges lack efficient methods to securely attach panels while maintaining a seamless appearance, as they often require visible fasteners or complex installation processes.
Innovation Solution
A system involving an insertable device with a two-part construction, including a body and a snap-on enclosing bottom, that fits into a recessed edge of a panel, allowing for the passage of fasteners and epoxy to create a secure, hidden connection between composite panels, utilizing epoxy channels to encapsulate the insert and ensure strong adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If visible fasteners are used to attach composite panels, then secure connection is achieved, but aesthetic appearance deteriorates due to visible fasteners
Solution Approach 1:
The fastener head is extracted from the visible surface by routing it through an installation aperture in the insert body, placing it inside the recess where it remains hidden. Only the fastener shaft passes through the panel surface, while the head is concealed within the insert structure, achieving both secure connection and aesthetic appearance.
2Strength
If traditional fastening methods are used, then secure attachment is achieved, but installation complexity increases due to complex installation processes
Solution Approach 1:
The insert is pre-installed into the recess and secured with epoxy before the panel assembly process. The installation aperture is prepared in advance, allowing the fastener to be directly driven through the panel and into the pre-positioned insert, eliminating the need for complex multi-step installation procedures during final assembly.
3Shape
If hidden fasteners are implemented, then aesthetic appearance is improved, but fastener accessibility deteriorates
Solution Approach 1:
The installation aperture in the insert body serves as an intermediary access point, allowing the fastener shaft to pass through the panel surface and engage with the hidden fastener head inside the recess. This intermediary structure maintains aesthetic appearance while providing the necessary accessibility for fastener installation and potential maintenance.
Data Source
AI summary
A system for connecting two panels together. A recess is formed in the edge of one panel, and an insert is pressed into and held within the recess. The top of the insert includes holes for receiving epoxy, and epoxy conducting shafts and circuits formed on the outside of the insert assist in the encapsulation of the insert within the panel edge. The top of the insert includes an aperture formed such that a fastener can be received into a cavity formed in the recess and then driven to be secured into a fastener-receiving insert installed into the second panel.