Multi-Spring Actuators for Harsh Environment Hinges
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Solution Overview
Problem
Existing actuated hinges used in harsh environments such as aerospace, nuclear, and chemical industries face issues like lack of covertness, contamination control, thermal control, solar protection, and inconvenient failures, particularly due to the use of electrical motors.
Innovation Solution
A multi-spring-loaded actuator system that includes a rotatable axis with multiple loaded springs and one-time release mechanisms, allowing for bi-directional movement of articles relative to each other without the need for electrical motors, thus addressing the limitations of traditional actuated hinges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electrical motors are used to actuate hinges and mechanisms, then automation and convenience are improved, but reliability in harsh environments deteriorates due to issues with covertness, contamination control, thermal control, and solar protection
Solution Approach 1:
The patent replaces electrical motors with a purely mechanical spring-loaded actuation system. The mechanism uses loaded springs that can be sequentially discharged to provide bidirectional movement without any electrical components, thereby eliminating the reliability issues associated with motors in harsh environments while maintaining automated functionality
Solution Approach 2:
The patent extracts and removes electrical motors and associated electronics from the actuation system. By eliminating these vulnerable components entirely and replacing them with a mechanical spring system, the invention resolves the contradiction between automation and reliability in harsh environments
2Adaptability or versatility
If electrical motors are used for actuation, then bidirectional movement capability is achieved, but device complexity and vulnerability to failures increase
Solution Approach 1:
The patent segments the actuation function into multiple independent loaded springs, each capable of providing unidirectional force. By arranging these springs in a sequence where each can be independently discharged, the system achieves bidirectional movement through a series of simple, modular mechanical actions rather than requiring complex motor control systems
3Ease of operation
If electrical motors are used, then precise control is possible, but thermal control issues and solar protection problems arise in harsh environments
Solution Approach 1:
The patent replaces electrical motors with a mechanical spring system that is inherently immune to thermal and solar effects. The spring-loaded mechanism operates purely through mechanical energy storage and release, eliminating the thermal management and solar protection issues that plague electrical systems in harsh environments
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 multi-spring-loaded actuator system provides high reliability and bi-directional movement, effectively addressing the challenges faced by traditional actuated hinges in harsh environments by eliminating the need for electrical motors and enhancing operational reliability.
Implementation Method 1
a first loaded spring having a first rotational potential attached to the rotatable axis to cause the rotatable axis to rotate in a first direction when the first rotational potential of the first loaded spring is released
Data Source
AI summary
Multi-spring-loaded actuators can include a rotatable axis arranged to rotate relative to a fixed frame, and multiple loaded springs, each having a rotational potential and being operationally attached to the rotatable axis to cause the rotatable axis to rotate in a first direction (or a second direction) when its rotational potential is released (sequentially). Each loaded spring is associated with a one-time release mechanism operationally coupled to a respective loaded spring to retain the loaded spring with a potential until the one-time release mechanism is spent causing the loaded spring to release. By firing the one-time release mechanism and unloading loaded springs sequentially, a rotatable axis can move a first article relative to a second article, typically in a bi-directional manner.