Rotatable-Housing Acoustic Warning Device Without Waterproof Seals
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Solution Overview
Problem
Existing acoustic warning devices for divers are prone to failure due to water ingress, particularly salt water, and require sealing measures, which can lead to maintenance issues.
Innovation Solution
An acoustic warning device designed with a rotatable housing element and a spring element that generates noise through contact with a noise-generating element, eliminating the need for waterproofing and using corrosion-resistant materials like plastic or metals, allowing for easy assembly, disassembly, and replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic components are used in acoustic warning devices, then functionality is improved, but reliability deteriorates due to water ingress and corrosion
Solution Approach 1:
The patent removes all electronic components (microcontroller, battery, circuit board, waterproof seals) from the acoustic warning device, extracting the source of reliability problems. The device is reduced to pure mechanical elements: a rotating housing with a spring-loaded noise-generating element that produces sound through mechanical friction or impact, eliminating vulnerability to water ingress entirely.
Solution Approach 2:
The invention employs simple, inexpensive mechanical components that can be easily replaced if worn or damaged. The noise-generating element and spring mechanism are designed as basic mechanical parts without electronic complexity, making the entire device effectively disposable or easily maintainable, thus improving reliability through simplicity rather than through protective sealing.
2Reliability
If waterproof sealing measures are implemented, then reliability in water is improved, but device complexity increases
Solution Approach 1:
The patent completely extracts the waterproof sealing system from the device design. Instead of adding seals, gaskets, or waterproof coatings, the invention accepts that the device has no waterproofing at all, relying instead on the inherent simplicity and replaceability of its mechanical components to maintain reliability in aquatic environments.
3Reliability
If corrosion-resistant materials are used, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The invention uses inexpensive, easily manufactured materials such as standard plastics and common metals for its mechanical components. Rather than investing in expensive corrosion-resistant alloys or specialized coatings, the design accepts that simple materials can be used because the entire device is simple enough to replace affordably if needed, thus maintaining reliability through ease of replacement rather than through expensive protective materials.
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 is maintenance-free, lightweight, easy to operate, and functions in both water and air, with adjustable noise frequency and volume, and does not require batteries, offering reliable self-protection for divers.
Implementation Method 1
a noise can be generated by the contact between the noise-generating element and the stop element during the rotational movement
Data Source
Figure 1~3b
Figure 4a~4b
Figure 5a~5b
AI summary
An acoustic warning device (10) comprises a first housing element (1), which includes at least one receiving means for attaching a fastening element (6) for mounting on a body or device, and a second housing element (2). The first housing element (1) is rotatable relative to the first housing element (2). A spring element (3) is arranged between the first housing element (1) and the second housing element (2). The spring element (3) includes at least one stop element (4, 5) which, in the installed state, is in contact with a noise-generating element (21) arranged in the second housing element (2), such that when the second housing element (2) is rotated, a noise can be generated by the contact between the noise-generating element (21) and the stop element (4, 5).