Threshold Biasing Element for Garage Door Sealing
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Solution Overview
Problem
Existing overhead garage door systems face challenges in achieving effective weather sealing and mechanical security, often resulting in air leaks and drafts, which increase energy usage and reduce resource savings.
Innovation Solution
The proposed system includes a threshold sealing system with a threshold biasing element having a base that attaches to the floor and a biasing surface extending at an oblique angle. This system biases the shaft subassembly towards the door frame when the overhead door assembly is moved towards the floor, enhancing sealing and security independently of traditional track and support systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional overhead garage door track systems are used, then the door can be raised and lowered with minimal clearance, but air leaks and drafts occur that reduce weather sealing effectiveness
Solution Approach 1:
A threshold biasing element is introduced as an intermediary component between the door assembly and floor. This biasing element applies continuous threshold biasing force to the shaft subassembly, pushing the door toward the door frame to improve sealing at the threshold area without interfering with the track system's movement function.
Solution Approach 2:
The threshold biasing element pre-positions the shaft subassembly and door assembly against the door frame before the door is fully closed. This preliminary action ensures the door is already pressed against the seal at the threshold, reducing air leaks that would occur during the closing operation.
2Ease of operation
If dimensional clearance distances are increased to promote free engagement and movement of door panels, then operational freedom is improved, but sealing effectiveness to the structural opening is reduced
Solution Approach 1:
The threshold biasing element serves as a mediator that allows the door assembly to maintain operational clearance distances for free movement while simultaneously applying force to ensure effective sealing. The biasing element decouples the movement function (handled by tracks) from the sealing function (handled by biasing force).
3Object-affected harmful factors
If the door assembly is positioned closer to the door frame to improve sealing, then weather tightness is enhanced, but mechanical movement and operational clearance are compromised
Solution Approach 1:
The threshold biasing element performs the sealing action preliminarily by continuously pressing the door assembly toward the door frame. This allows the door to maintain optimal sealing position without requiring the entire door system to be repositioned, preserving mechanical movement clearance.
Solution Approach 2:
The sealing function is segmented from the movement function. The track system handles movement with required clearances, while the threshold biasing element independently handles sealing by applying localized force at the threshold area, allowing both functions to operate optimally.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system significantly reduces air leaks and drafts, leading to improved energy efficiency and long-term resource savings, while providing enhanced mechanical security and weather sealing, independent of traditional overhead garage door track systems.
Implementation Method 1
a threshold biasing element including a base configured to attach to a floor surface and a biasing surface extending at an oblique angle relative to the base
Data Source
AI summary
A threshold sealing system for a door panel assembly includes a threshold biasing element and an anchor. The threshold biasing element including a base configured to attach to a floor surface and a biasing surface extending at an oblique angle relative to the base. The anchor is configured to secure the base of the threshold biasing element to the floor. The anchor and the threshold biasing element may be integrally formed and include the same materials. The oblique angle of the biasing surface ranges from 70 degrees to 80 degrees and has a height of at least 1.5 inches.