Hearing Safety Device With Movable Ear Lid for Variable Attenuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hearing protection solutions, such as earmuffs and ear plugs, fail to provide sufficient sound attenuation in environments with intense noise levels and are often misused due to discomfort and improper fitting, leading to inadequate protection and interference with communication.
Innovation Solution
A hearing safety device with an earmuff body, ear lid, and adjustment mechanism that dynamically adjusts sound attenuation based on sound intensity differences using sensors and a controller, allowing for variable sound attenuation without entering the ear canal and enabling communication by moving the ear lid to open and close the ear canal as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional earmuffs and ear plugs are used, then hearing protection is provided, but sound attenuation is insufficient in intense noise environments and communication is interfered with
Solution Approach 1:
The ear lid is designed to be movable rather than fixed, allowing it to dynamically adjust between blocking the ear canal for noise protection and moving away to enable clear communication. The adjustment mechanism includes a spring that provides continuous force to move the ear lid between positioned states, creating a dynamic system that adapts to different operational needs.
Solution Approach 2:
The hearing protection device is divided into separate functional components: the earmuff body for passive noise blocking, the movable ear lid for active ear canal sealing, and the adjustment mechanism for controlling ear lid position. This segmentation allows each component to be optimized independently and combined to provide both protection and communication capabilities.
2Object-affected harmful factors
If ear plugs are inserted into the ear canal for better protection, then sound attenuation improves, but comfort decreases and misuse increases
Solution Approach 1:
The invention extracts the sealing function from traditional ear plugs and relocates it to the ear lid component of the earmuff system. This allows the sealing action to occur outside the ear canal at the ear opening, eliminating the discomfort and improper insertion issues associated with ear plugs while maintaining effective sound attenuation.
Solution Approach 2:
The ear lid acts as an intermediary component between the earmuff body and the user's ear. It provides the sealing function that traditional ear plugs attempt to achieve through insertion, but does so by creating a seal at the ear opening rather than inside the canal, thereby improving comfort and ease of proper use.
3Device complexity
If fixed ear plugs or earmuffs are used, then simple structure is maintained, but adaptability to different noise levels and communication needs is reduced
Solution Approach 1:
Sensors are integrated into the hearing protection device to detect ambient noise levels and provide feedback to a control system. This feedback mechanism enables the device to automatically adjust the ear lid position or other parameters in response to changing noise environments, providing adaptability while maintaining relatively simple operation for the user.
Solution Approach 2:
The hearing protection device incorporates multiple functions within a single integrated system: passive noise blocking through the earmuff body, active ear canal sealing through the movable ear lid, and automatic adaptation through sensors and control mechanisms. This multi-functionality allows the device to handle various noise levels and communication scenarios without requiring multiple separate devices.
Data Source
AI summary
Devices, methods, and computer program products are provided herein for hearing safety. An example hearing safety device configured to be worn by a user includes an earmuff body that defines an interior cavity configured to receive the user's ear therein when worn by the user and an exterior surface opposite the interior cavity. The hearing safety device includes an ear lid attached to a surface of the interior cavity. The ear lid projects into the interior cavity from the surface of the interior cavity and defines a sealing surface configured to substantially seal an ear canal of the user's ear when the hearing safety device is worn by the user. The hearing safety device also includes an adjustment mechanism operably attached to the ear lid and configured to move the ear lid relative the interior cavity of the earmuff body.