Duct Access Panel With Rotating Clips for Gap-Free Sealing
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Solution Overview
Problem
Current methods for accessing and resealing ducts are inefficient, leading to gaps, damage, and safety hazards due to tape peeling, sharp corners, and loose parts, particularly in frequent industrial and commercial applications.
Innovation Solution
An access panel with a base plate, rotatable fasteners, and a gasket system that securely seals the duct opening, reducing the need for tape and minimizing sharp edges, while allowing easy installation and reinstallation with a handle and tool-less locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tape is used to re-seal the duct opening, then the opening can be closed, but gaps or spaces remain between the opening and the resealed portion
Solution Approach 1:
A gasket is introduced as an intermediary element between the access panel and the duct opening to create a reliable seal. The gasket compensates for irregularities in the opening shape and ensures complete sealing without gaps, eliminating the need for imperfect tape sealing.
Solution Approach 2:
The sealing system is segmented into distinct components: the access panel with integrated gasket and the rotatable fastener system. This segmentation allows each component to perform its specific function optimally, with the gasket providing the seal and the fasteners providing the securing mechanism.
2Duration of action of stationary object
If tape is used to re-seal the duct opening, then the opening can be closed, but the tape begins peeling away from the duct over time
Solution Approach 1:
The gasket serves as a durable intermediary that remains permanently in place, providing continuous sealing contact. Unlike tape that adheres to surfaces, the gasket is mechanically secured between the panel and duct, ensuring long-term durability and preventing peeling.
Solution Approach 2:
The gasket is designed with a curved or compressed cross-sectional shape that allows it to deform and conform to the duct opening surface. This curvature enables the gasket to maintain consistent contact pressure around the entire opening, preventing separation over time.
3Ease of operation
If a portion of the duct is cut out for access, then access is provided, but sharp corners are created that can cut technician arms and hands
Solution Approach 1:
The access panel is designed with rounded corners and edges instead of sharp rectangular cuts. This curvature eliminates cutting hazards while maintaining the necessary access opening size, allowing technicians to safely handle and install the panel.
Solution Approach 2:
The access panel itself acts as an intermediary that covers the sharp duct edges. By positioning the panel over the opening, the sharp corners are hidden and protected, preventing contact with technician skin during installation and removal.
4Strength
If other products use nuts or bolts for securing, then fastening is achieved, but loose parts can be easily lost or misplaced in the duct
Solution Approach 1:
The fastening function is merged with the access panel by integrating rotatable fasteners directly into the panel structure. This combination eliminates separate nuts and bolts, reducing the number of loose parts that could be lost while maintaining secure fastening capability.
Solution Approach 2:
The rotatable fasteners are designed to be self-contained units that require no additional components for operation. Each fastener is a complete, self-service element that can be independently installed and removed without risking loss of separate parts.
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 clip 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.