Hearing Device Sound Path Component with Common Chamber
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Solution Overview
Problem
Hearing devices with complex sound paths face design challenges and repair difficulties, leading to issues like occlusion effects and sound leakage, which affect user comfort and sound quality.
Innovation Solution
A hearing device with a simplified sound path system featuring a common chamber connected to a vent channel, output transducer opening, and input transducer opening, which reduces parts and enhances sealing, addressing occlusion effects through active occlusion cancellation and improved sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If separate chambers are used in the sound path component, then sound isolation between different paths is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple separate chambers into a single common chamber that houses both the output transducer and the vent channel. This consolidation eliminates the need for multiple discrete chambers while maintaining effective sound isolation through strategic placement of acoustic seals at critical interfaces, thereby reducing device complexity and manufacturing cost while preventing sound leakage.
Solution Approach 2:
The common chamber serves multiple functions simultaneously: it acts as the housing for the output transducer, provides the pathway for the vent channel, and maintains acoustic isolation between different sound paths. This multi-functional design reduces the overall number of components needed in the sound path system.
2Object-affected harmful factors
If multiple separate chambers are used, then sound isolation is improved, but repair difficulty and manufacturing cost increase
Solution Approach 1:
By combining multiple chambers into a single common chamber structure, the patent creates a more integrated and simpler component that is easier to manufacture as a single piece or assembly and simpler to repair or replace as a unified unit, reducing both manufacturing complexity and repair difficulty.
3Device complexity
If a common chamber is used, then device complexity is reduced, but sound leakage may increase
Solution Approach 1:
The common chamber design consolidates multiple functions into one structure, reducing the number of potential sealing interfaces between separate chambers. By carefully positioning acoustic seals at the critical boundaries where sound paths diverge within the common chamber, the design maintains effective sound isolation while benefiting from the simplified structure.
4Object-affected harmful factors
If separate chambers are used, then sound path isolation is improved, but manufacturing cost and device size increase
Solution Approach 1:
The patent consolidates multiple separate chambers into a single common chamber, reducing the total number of molded parts or assembled components. This simplification reduces manufacturing steps, assembly operations, and associated costs, while acoustic seals are strategically placed to maintain sound isolation effectiveness.
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 solution provides a compact, user-friendly, and cost-effective hearing device with reduced sound leakage and occlusion effects, enhancing user comfort and sound quality by using a common chamber and vent channel configuration, along with active occlusion cancellation.
Implementation Method 1
The vent channel is configured to vent the hearing device. The vent channel removes or at least mitigates the occlusion effect. The vent channel allows for pressure equalization between the ear canal and the surroundings.
Implementation Method 2
an air-tight sound path component is achieved, as the sound path component comprises openings where relevant such that the sound may not leak. The air-tight sound path component also allows for at least an improved sealing, compared to the sound path components with e.g. separate chambers.
Data Source
AI summary
A hearing device includes a sound path component having: a chamber at a first end of the hearing device; a vent channel extending from the chamber to a second end of the hearing device, the vent channel having a first vent end at the chamber and a second vent end; an output transducer opening configured to couple to an output transducer; a first opening at the chamber and being configured to face towards an ear canal of the user; and a second opening at the second end of the hearing device and being configured to face towards a surrounding, the second opening being at the second vent end of the vent channel; and an input transducer opening configured to couple to a first input transducer; the vent channel, the input transducer opening, the output transducer opening, the first opening and the second opening being in fluid connection with each another.