Hurricane Screen Slip Clutch for Base Slat Stability
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Solution Overview
Problem
Existing hurricane screen fabrics lift off the base slat during high winds due to uneven wind pressure, causing potential damage and instability, and existing solutions like spring-loaded systems fail to maintain fabric tension effectively.
Innovation Solution
A rolling hurricane screen system with an electric motor and slip clutch that deploys additional fabric during high winds, maintaining torque equal to or greater than the fabric weight, preventing the base slat from lifting by allowing the motor to remain idle and using a slip clutch to manage torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spring-loaded systems are used to maintain fabric tension, then fabric tension is maintained during normal conditions, but the base slat lifts off the floor during high winds
Solution Approach 1:
The system transitions from a static spring-loaded tensioning system to a dynamic motorized system with slip clutch that can adapt fabric tension in real-time based on wind conditions, allowing the base slat to remain grounded during high winds
Solution Approach 2:
The slip clutch mechanism changes the torque parameter transmitted to the fabric roll, allowing controlled slippage during high winds to maintain optimal fabric tension without lifting the base slat
2Reliability
If additional fabric is deployed during high winds, then fabric tension is maintained and base slat stability is improved, but the motor must handle variable torque loads
Solution Approach 1:
The slip clutch acts as an intermediary between the motor and the fabric roll, absorbing torque variations and protecting the motor from excessive loads while enabling controlled fabric deployment during high winds
Solution Approach 2:
The slip clutch is pre-configured to slip at a specific torque threshold, providing beforehand protection against motor overload and enabling smooth transition to additional fabric deployment without shocking the motor
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 ensures the base slat remains on the floor during high winds, maintaining fabric tension and preventing damage, while allowing the motor to operate normally and return to the preset position after winds subside.
Implementation Method 1
A rolling hurricane screen system with an electric motor and slip clutch that deploys additional fabric during high winds, maintaining torque equal to or greater than the fabric weight
Data Source
AI summary
A screen fabric retention device in the form of a motor and spring combination for a hurricane screen fabric. The combination overcomes the change in torque for use with a motor driven hurricane screen fabric system, allowing the motor to operate if there is a change in the initial torque which otherwise will interrupt motor operation. The device allows vertical deployment of screen fabric when the motor is idle, which prevents the base slat from lifting during high wind loads. A slip clutch assembly is attached to the drive end of the motor allows fabric deployment. The slip clutch will limit torque with the same force in both directions.