Non-explosive Tension Release Actuator with Spring-driven Carriage
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Solution Overview
Problem
Pyrotechnic actuators for releasing external loads are limited by their explosive nature, causing damage and being non-reusable, with storage and transportation regulations adding complexity, while non-explosive alternatives require large springs for heavy loads, leading to space and practicality issues.
Innovation Solution
A non-explosive tension release actuation device with an initiator system, housing base, carriage assembly, and load attachment unit, utilizing redundant initiator units and a spring mechanism to initiate downward motion and release loads without explosives, allowing for reusability and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pyrotechnic actuators are used to release external loads, then the release function is achieved, but damage to the load and actuator occurs due to explosion impact
Solution Approach 1:
The patent removes the explosive energy source from the actuator system entirely, extracting the harmful element while preserving the release function. The actuator uses a mechanical spring-based system instead of pyrotechnic initiation, eliminating shock and damage to both the load and actuator components.
Solution Approach 2:
The patent converts the harmful explosive energy into a beneficial controlled mechanical force. Instead of using explosion to achieve release, the system uses a compressed spring that provides controlled mechanical energy to actuate the release mechanism, transforming a harmful approach into a beneficial one.
2Reliability
If pyrotechnic actuators are used for load release, then the release function is achieved, but the actuator becomes non-reusable due to explosion damage
Solution Approach 1:
The actuator is designed to be self-resetting after release. The spring automatically re-arms the mechanism after load release, allowing the actuator to be reused without manual intervention or repair. The mechanical components are designed to return to their initial state automatically.
Solution Approach 2:
The patent inverts the traditional approach by making the energy storage element (spring) reusable rather than disposable. Unlike pyrotechnic actuators that are destroyed after one use, this mechanical system can be reset and reused multiple times, eliminating the need for replacement after each operation.
3Reliability
If explosive energy sources are used in actuators, then the release function is achieved, but storage and transportation are subject to stringent regulations
Solution Approach 1:
The patent replaces the pyrotechnic (chemical) energy source with a mechanical spring-based energy storage system. This substitution eliminates the need for explosive materials, thereby removing all associated storage and transportation regulations while maintaining the release function.
4Ease of repair
If non-explosive actuators use compressed springs to replace explosive energy, then reusability is achieved, but a large spring is required for heavy loads, increasing actuator size
Solution Approach 1:
The patent divides the spring system into multiple segments or stages. Instead of using one large spring, the system employs multiple smaller springs working in sequence or parallel, reducing the overall volume required while maintaining the necessary force output for heavy loads.
Solution Approach 2:
The patent optimizes the spring arrangement by utilizing three-dimensional space more efficiently. The springs are configured in a compact geometry that maximizes energy density, allowing heavy load capability without proportionally increasing the actuator's external dimensions.
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 device effectively releases external loads without damage or regulatory concerns, enabling reusability and minimizing shock impact, while maintaining a compact size suitable for various applications.
Implementation Method 1
non-explosive actuators generally rely on preloading the device using a compressed spring
Implementation Method 2
ball bearings in contact with the slanted inner wall of the plunger and a bottom surface of the housing cover
Data Source
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AI summary
A non-explosive tension release actuation device includes an initiator system (202) and a housing base (102) attached to the initiator system. The device also includes a carriage assembly (204) positioned at least partially within the housing base. The carriage assembly includes a carriage unit (206), a first jaw (218), a second jaw (220), a first rocker arm (214), and a second rocker arm (216). The first rocker arm and the second rocker arm are attached to the carriage unit and to the initiator system. The device further includes a load attachment unit (212) positioned at least partially within the carriage unit and between the first jaw and the second jaw. The first jaw and the second jaw are configured to swing away from the load attachment unit in response to a downward motion of the carriage unit relative to the housing base.