Non-Occluding Earbud Housing With Offset Sound Port
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional non-occluding earbuds are prone to damage from normal use and lack optimal sound quality due to their design, which does not form an airtight seal with the ear, leading to structural integrity issues and compromised acoustic performance.
Innovation Solution
The design incorporates a non-occluding housing with a directional sound port offset from the center axis, an asymmetric shape for in-the-ear retention, and the use of mid-mold and rear-mold structures to tune volumes, along with apertures for improved sound performance, and a seamless construction method to enhance durability and sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional non-occluding earbuds are used, then ease of operation and comfort are improved, but structural integrity and durability deteriorate due to damage from normal use and chemical exposure
Solution Approach 1:
The earbud housing is divided into multiple components (cap sub-assembly, rear housing sub-assembly, mid-mold structure, rear-mold structure) that are precisely aligned and joined. This segmentation allows each part to be optimized for its specific function while maintaining overall structural integrity through controlled gaps and offsets between components.
Solution Approach 2:
Alignment features and gap control mechanisms are built into the housing components during manufacturing. The mid-mold and rear-mold structures incorporate pre-designed alignment features that ensure proper positioning before final assembly, preventing misalignment and structural weakness during use.
2Ease of operation
If conventional non-occluding earbuds are used, then ease of operation is improved, but acoustic performance deteriorates due to lack of airtight seal
Solution Approach 1:
The housing design implements different properties in different regions: the cap and rear housing maintain non-occluding characteristics for comfort, while internal chambers and specific pathways are designed with precise volume control for acoustic performance. The mid-mold and rear-mold structures create localized acoustic environments that optimize sound quality without requiring full occlusion.
Solution Approach 2:
The patent controls acoustic parameters by precisely managing the volumes of front and back chambers, the size and position of gaps and offsets, and the configuration of sound ports. These parameter changes allow optimization of acoustic performance while maintaining the non-occluding design for comfort.
3Strength
If housing components are joined together, then structural integrity is improved, but manufacturing precision deteriorates due to gaps and offsets between parts
Solution Approach 1:
The housing components incorporate asymmetric alignment features and non-uniform gap distributions that compensate for manufacturing tolerances. The cap and rear housing are designed with specific asymmetric geometries that ensure proper alignment during assembly, reducing the impact of manufacturing variations on final alignment.
Solution Approach 2:
The mid-mold and rear-mold structures serve as intermediary components that facilitate precise alignment between the cap and rear housing. These intermediate structures incorporate alignment features and controlled gap mechanisms that mediate the joining process, ensuring minimal gaps and offsets in the final assembly.
4Shape
If seamless construction is achieved, then aesthetic appearance is improved, but device complexity increases due to multiple parts joining
Solution Approach 1:
The housing components are designed with nested structures where the mid-mold and rear-mold structures are positioned within the cap and rear housing assemblies. This nesting allows multiple components to be integrated in a space-efficient manner, creating a seamless external appearance while accommodating the complexity of multiple internal parts.
Data Source
AI summary
Systems and methods for assembling non-occluding earbuds are disclosed. The earbud includes a non-occluding housing having a directional sound port offset with respect to a center axis of the earbud. The housing can have an asymmetric shape amenable to in-the-ear retention. Additionally, the housing can have a seamless or nearly seamless construction even though two or more parts are joined together to form the housing.