Oval In-Ear Headphone Nozzle Angling for Frequency Response
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Solution Overview
Problem
Conventional in-ear headphones lack optimal acoustic performance and comfort due to their design, leading to inadequate sound isolation and ambient noise leakage, which affects sound quality and user experience.
Innovation Solution
The design incorporates an angled nozzle with a 0.6 millimeter damper hole, a co-molded oval-shaped housing, and a locking mechanism to secure the front and rear housings, enhancing sound reproduction by directing sound waves effectively through the ear canal while providing a comfortable fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional in-ear headphones use a straight nozzle design, then the structure is simple, but the frequency response is unbalanced and sound quality is poor
Solution Approach 1:
The patent applies asymmetry by changing the nozzle from a straight configuration to an angled configuration. The angled nozzle creates an asymmetric sound path that improves frequency response balance by directing sound waves more effectively through the ear canal, particularly enhancing bass and mid-range frequencies while reducing harsh high frequencies.
Solution Approach 2:
The patent introduces a new dimension to the nozzle design by adding an angular component. Instead of only varying the diameter or length of the nozzle, the invention tilts the nozzle at a specific angle relative to the ear canal axis, creating a three-dimensional sound path optimization that improves acoustic performance.
2Object-affected harmful factors
If conventional in-ear headphones use a standard housing shape, then manufacturing is simple, but sound isolation is inadequate and ambient noise leaks
Solution Approach 1:
The patent applies asymmetry by designing the housing with an oval cross-section instead of a circular one. This oval shape better conforms to the natural anatomy of the ear canal, which is typically oval rather than round. The asymmetric oval geometry provides improved sound isolation by creating a more effective seal against the ear canal walls while reducing ambient noise leakage.
3Reliability
If conventional in-ear headphones lack a locking mechanism, then assembly is simple, but the headphones are prone to falling out
Solution Approach 1:
The patent applies segmentation by dividing the housing into separate modular components that can be assembled and disassembled. The locking mechanism is implemented as a distinct feature within this segmented structure, allowing the housing to be broken down into manageable parts while still providing secure retention when assembled.
Solution Approach 2:
The patent utilizes curvature in the locking mechanism design, where curved or rounded locking surfaces engage to secure the housing components together. The oval-shaped housing geometry itself provides curved surfaces that can engage with corresponding features to prevent the headphones from falling out during use.
Data Source
AI summary
A pair of in-ear headphones is disclosed that are operable to reproduce incoming audio signals. The in-ear headphones include an oval shaped housing defining an internal chamber. A front portion of the oval shaped housing defines a nozzle extending away from the housing. A driver is positioned in the internal chamber such that a sound reproduction portion of the driver is aligned with an internal audio channel running through the nozzle. A damper is positioned in an end of the nozzle having a damper aperture having a predetermined size. The nozzle extends from a base portion of the housing at a predetermined upward angle and a predetermined bend angle that provides improved audio frequency responses in desirable frequency ranges.