Earphone Noise Reduction Structure with Detachable Acoustic Barriers
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Solution Overview
Problem
Existing in-ear earphones have limited sound isolating effects, allowing external noise to penetrate the earplug and enter the ear canal.
Innovation Solution
The earphone design incorporates a cap with a first noise reduction part and a wing with a second noise reduction part, forming a noise reduction cavity between them to block environmental noise, with detachable components allowing for customizable fit and improved comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a single earplug is used to isolate noise, then the structure is simple, but the noise isolation effect is limited
Solution Approach 1:
The earphone assembly is segmented into multiple independent noise reduction components: a cap with a first noise reduction part and a wing with a second noise reduction part. Each component performs noise isolation at different locations, with the cap positioned at the sound outlet pipe and the wing at the main housing, creating multiple blocking points against external noise
Solution Approach 2:
The noise reduction approach transitions from a single-dimensional earplug blocking to a multi-dimensional noise barrier system. The first and second noise reduction parts are arranged at different spatial positions and orientations, forming a three-dimensional noise isolation structure that blocks noise from multiple directions simultaneously
2Ease of operation
If the earplug size is fixed, then the manufacturing is simple, but the wearing comfort for different users is poor
Solution Approach 1:
The earphone is divided into detachable components including the cap, wing, and main housing, allowing users to separately select and replace different sized components. The cap and wing can be independently chosen to match different ear canal dimensions, providing customized fit without requiring complete redesign of the entire earphone
Solution Approach 2:
The detachable cap and wing components serve multiple functions: they provide noise reduction, enable customization for different users, and allow easy replacement. The same basic component design can serve multiple user groups through size variations, achieving both universality and customization
Data Source
AI summary
The disclosure describes an earphone comprising: a body comprising a main housing and a sound outlet pipe connected to the main housing; and a cap comprising a fixing part and a first noise reduction part e connected to each other. The fixing part is sleeved on the sound outlet pipe, and the first noise reduction part is provided around a peripheral side of the fixing part. The earphone further comprises a wing comprising a second noise reduction part. The second noise reduction part is provided around a peripheral side of the main housing. A cavity is formed between the first noise reduction part and the second noise reduction part, and is configured to block environmental noise.