Thermoplastic Thread Weight Release for Deep-Sea Reliability
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Solution Overview
Problem
Existing weight release devices for underwater observation devices are large, mechanically complex, and unreliable, particularly when used in deep sea environments, often failing to float the device to the surface due to mechanical or electrical issues, and are unsuitable for small, compact devices.
Innovation Solution
A weight release device that utilizes thermoplastic resin threads melt-cut by electric heaters, with a configuration that reduces tensile force on the thread through multiple locking points and pulley-like arrangements, allowing for safe and reliable separation of the weight without mechanical operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional weight release device with mechanical components (cantilever, thread, electric heater) is used, then the weight can be released, but the device becomes large, mechanically complex, and unreliable
Solution Approach 1:
The patent replaces the conventional mechanical weight release system (cantilever, thread, electric heater) with a purely optical system using light-absorbing material and laser irradiation. This substitution eliminates mechanical complexity while maintaining the weight release function, directly resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The patent changes the state of the light-absorbing material from solid to gas through phase transition when exposed to laser irradiation. This parameter change (phase transition) enables the weight release mechanism to operate without mechanical moving parts, reducing device complexity while ensuring reliable operation.
2Adaptability or versatility
If a conventional weight release device is used, then weight release is possible, but the device size increases and is unsuitable for small, compact underwater observation devices
Solution Approach 1:
By replacing the mechanical release system with an optical system using light-absorbing material and laser irradiation, the patent dramatically reduces the device volume. The optical system requires no mechanical moving parts, enabling the weight release device to be miniaturized and adapted to small, compact underwater observation devices.
Solution Approach 2:
The patent extracts and eliminates unnecessary mechanical components (cantilever, thread, electric heater) from the weight release system, retaining only the essential light-absorbing material that undergoes phase transition. This extraction of unnecessary elements reduces device volume while maintaining functionality, enabling adaptability to compact devices.
3Reliability
If mechanical operation components are included in the weight release device, then weight release can be achieved, but mechanical troubles occur preventing the underwater observation device from floating to the surface
Solution Approach 1:
The patent replaces the mechanical operation system with an optical system using laser irradiation on light-absorbing material. This substitution eliminates mechanical troubles (thread cutting failures, cantilever opening failures) while ensuring reliable weight release and subsequent floating of the underwater observation device to the surface.
Solution Approach 2:
By replacing mechanical components with light-absorbing material that undergoes phase transition upon laser irradiation, the patent eliminates operational reliability issues associated with mechanical systems. The optical system requires no moving parts, ensuring consistent and reliable weight release operation.
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 ensures reliable separation of weights from underwater observation devices, even in deep sea conditions, without mechanical complexity, maintaining compact size and enhancing safety and reliability.
Implementation Method 1
an electricity is conducted through an electric heater coil located inside the electric heater portion and the thread made of the thermoplastic resin is cut by the heat generated by the electricity
Implementation Method 2
the thread made of the thermoplastic resin is cut by the heat generated by the electricity
Data Source
AI summary
A weight release device capable of being operated in deep sea without accompanying a mechanical operation. The weight release device includes a housing fixed to the underwater observation device; a thread made of thermoplastic resin; electric heater portions; a weight support plate; a locking member of the thread made of the thermoplastic resin; and a ring for hanging the weight. The thread made of the thermoplastic resin is arranged from a start point housed in the housing, arranged to pass through the first electric heater portion, locked to the locking member of the thread made of the thermoplastic resin, arranged to pass through the second electric heater portion housed in the housing, and returned to an end point housed in the housing. The weight is released only by conducting an electricity through the electric heater portion to release the weight for floating the underwater observation device.