Spring-Loaded Roller Hinges for Overhead Door Sealing
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Solution Overview
Problem
Conventional overhead doors fail to provide an effective weather and thermal seal due to gaps between door panels and the vertical side sections of the door frame, which leads to heat loss, increased energy costs, and potential ice formation, especially in extreme weather conditions, and are complicated by varying roller hinge heights and lack of adjustability in track alignment.
Innovation Solution
The implementation of spring-loaded roller hinges that are securely attached to adjacent door panels, featuring a bracket with opposed flanges to pivotally secure and space the roller hub, which is biased by a spring to push the door panels into sealing engagement with the door frame or weather stripping, accommodating varying hinge heights and track angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional roller hinges are used without spring loading, then the door can move along the track, but gaps exist between the door panels and the vertical sides of the door frame causing poor sealing
Solution Approach 1:
The roller hinge incorporates a spring mechanism that changes the force parameter applied to the door panel. The spring biases the roller hub to push the door panel against the door frame with sufficient force to close gaps and achieve effective sealing, transforming a passive hinge into an active sealing mechanism.
Solution Approach 2:
The spring-loaded mechanism applies a preliminary pushing force against the door frame before external elements like air or ice can exploit the gap. This pre-applied force maintains continuous contact between the door panel and frame, preventing harmful factors from penetrating through gaps.
2Ease of operation
If the track is angled inward to allow door release from the frame, then the door can move freely, but the roller hinge flange heights must vary complicating the structure
Solution Approach 1:
The roller hub is designed to move dynamically along the angled track while the spring mechanism compensates for variations in flange height. The spring's elastic property allows it to maintain pushing force despite changes in geometric relationships caused by the angled track and varying flange heights, eliminating the need for precisely matched fixed dimensions.
3Reliability
If weather stripping is added to seal gaps, then sealing improves, but the weather stripping can be torn, damaged, or lose resilience over time
Solution Approach 1:
The spring-loaded roller hinge creates a self-service sealing system where the door panel itself, pushed by the spring, performs the sealing function directly against the frame. This eliminates or reduces dependence on separate weather stripping components that can deteriorate, as the mechanical pushing force maintains the seal through the door panel's own structure.
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 spring-loaded roller hinges ensure a tight seal against the door frame and weather stripping, reducing heat transfer, preventing external elements like air, noise, and pests from entering, and are adaptable to various door configurations, including adjustable and non-adjustable tracks, thus enhancing energy efficiency and safety.
Implementation Method 1
Each roller hinge has a spring that biases its roller hub and wheel rearwardly against the fixed track, which pushes the door panels forward and into sealing engagement with the door frame or its weather stripping
Data Source
AI summary
An overhead door with spring-loaded roller hinges that push the door against its frame or weather stripping to provide an effective weather and thermal seal when the door is closed. The spring-loaded roller hinges are readily retrofit to overhead doors with conventional roller hinges. Each hinge spaces and pivotally secures a roller hub from the base of the hinge. The roller hub is pivotally secured to an inside flange and movably held by an elongated slot in an outer flange. The roller hub supportingly receives the axel of a wheel that rollingly engages a track fixed to the vertical sides of the door frame. Each roller hinge has a spring that biases its roller hub and wheel rearwardly against the fixed track, which pushes the door panels forward and into sealing engagement with the door frame or its weather stripping.