Duct Access Panel With Rotating Clips for Reliable Resealing
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Solution Overview
Problem
Current methods for accessing and sealing ducts are inefficient, leading to gaps, sharp corners, and misplaced parts, and require frequent re-sealing, which complicates future access and poses safety hazards.
Innovation Solution
An access panel with a base plate and rotatable fasteners that secure to the duct system using locking clips and a gasket, providing a secure seal and easy installation, and optionally includes a handle, rope seal, and external stud bolts for insulation attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tape is used to seal the duct opening, then the duct can be sealed, but gaps or spaces remain between the opening and the resealing portion
Solution Approach 1:
A gasket is introduced as an intermediary element between the access panel and the duct opening. The gasket compensates for irregularities in the duct surface and ensures complete sealing without gaps, resolving the contradiction between achieving reliable sealing and maintaining sealing precision.
Solution Approach 2:
The sealing system is divided into separate components: the access panel, the gasket, and the locking mechanism. This segmentation allows each component to be optimized independently, with the gasket specifically designed to eliminate gaps while the locking mechanism ensures precise positioning.
2Duration of action of stationary object
If tape is used to seal the duct, then the duct can be sealed initially, but the tape begins pealing away from the duct over time
Solution Approach 1:
The locking mechanism uses a cam-based rotational locking system that creates a curved locking path. This rotational motion allows for progressive engagement and disengagement of the locking clips, ensuring secure long-term attachment while maintaining easy access for future removal and reinstallation.
3Ease of operation
If a portion of the duct is cut out for access, then the duct can be accessed for cleaning or inspection, but sharp corners are created that can cut technician arms and hands
Solution Approach 1:
The duct access system is segmented into a removable access panel and the main duct body. The access panel can be designed with rounded corners and smooth edges, eliminating the sharp corners that would otherwise be created by cutting the duct directly. This segmentation maintains easy access while removing safety hazards.
4Strength
If other products use nuts or bolts for securing, then the duct can be secured, but loose parts are easily lost or misplaced and left in the duct
Solution Approach 1:
The locking clips are integrated directly into the access panel structure, merging the fastening function with the panel itself. This integration eliminates loose nuts and bolts that could be lost, while the cam-based locking mechanism provides sufficient securing strength through a single-piece design that cannot be misplaced.
Data Source
AI summary
An access panel for an opening in a duct is provided. The access panel includes an exterior and an interior. The access panel further includes a section positioned on the interior and having a profile substantially corresponding to the opening in the duct. A plurality of fasteners is positioned about the section. Each fastener has a dip configured to move to a position defined to extend away from the profile of the section on the interior. When the access panel is positioned with the section on the interior against the opening in the duct and the fasteners are moved to the locking position the clips rotate to extend over the profile and secure a portion of the duct adjacent to the opening against the interior of the access panel.