Adjustable Damper Locking Assembly for Tool-Free Airflow Control
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Solution Overview
Problem
Existing damper assemblies for ventilation ducts lack self-locking mechanisms and require separate tools for adjustments, making them difficult to position correctly and prone to accidental dislodgment, while also failing to inhibit backflow effectively.
Innovation Solution
A damper assembly with a pivotally mounted rotation element and an adjustable locking mechanism featuring a male and female component with notches and a resilient biasing element, allowing for incremental adjustment and self-locking without the need for a separate tool, while providing a clear indication of the maximum open position and preventing backflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional wing nut and lever arrangement is used for damper adjustment, then the damper can be positioned manually, but the mechanism is not self-locking and may be accidentally dislodged
Solution Approach 1:
The damper mechanism uses spring tension to automatically engage gear teeth on the damper rod with gear teeth on the inner collar body, creating a self-locking system that maintains position without requiring continuous manual intervention or additional locking components
Solution Approach 2:
The damper is divided into separate functional components including the damper valve, damper rod with gear teeth, inner collar body with gear teeth, and spring mechanism, allowing each segment to perform its specific function while contributing to the overall self-locking capability
2Reliability
If a spring tension mechanism with gear teeth is used to make the damper self-locking, then the damper becomes self-locking, but a separate tool is required to effect adjustments
Solution Approach 1:
The adjustment mechanism is designed so that the damper rod can be manually rotated to reposition the damper valve, and the spring tension automatically disengages and re-engages the gear teeth during rotation, eliminating the need for separate adjustment tools while maintaining self-locking
Solution Approach 2:
The gear engagement is designed to be dynamic rather than fixed, allowing the gear teeth to automatically disengage under spring tension when the damper rod is rotated and re-engage at new positions, enabling tool-free adjustment while maintaining self-locking capability
3Adaptability or versatility
If the damper is made fully adjustable, then the airflow can be precisely controlled, but the mechanism becomes more complex and may require tools for adjustment
Solution Approach 1:
The gear teeth mechanism serves multiple functions simultaneously: it provides incremental adjustment positioning, self-locking capability, and tool-free operation, eliminating the need for separate adjustment mechanisms and reducing overall device complexity
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 damper assembly is incrementally adjustable, self-locking, and tool-free, ensuring accurate positioning and effective airflow directionality, with the ability to permit airflow in one direction while inhibiting it in the opposite direction without exceeding a predetermined maximum open position.
Implementation Method 1
a resilient biasing element configured for urging the male and female components into engagement with one another
Data Source
AI summary
A damper assembly, comprising an adjustable locking means for releasable retention of an element pivotally in one of a plurality of predetermined lock positions for adjusting air flow through an opening.