Dual-Speaker Earphone Layout for High- and Low-Frequency Output
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Solution Overview
Problem
The sound output effect of existing earphones is poor and requires improvement.
Innovation Solution
The earphone design includes separate first and second speaker units with different frequency ranges, where the second speaker unit is independently fastened in the housing, allowing for modular replacement and optimization of the structural layout, and features a housing with detachable components to facilitate maintenance and improve sound expression across various frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the first speaker unit and the second speaker unit are modularized and integrally fastened, then the maintenance process is simplified, but the maintenance cost increases and space is wasted due to replacing both units even when only one is damaged
Solution Approach 1:
The patent divides the speaker system into two independently fastened speaker units (first speaker unit and second speaker unit) that can be separately replaced. Each speaker unit has its own fastening structure allowing independent access and replacement, so only the damaged unit needs to be replaced rather than both units, reducing maintenance costs while simplifying the maintenance process.
2Device complexity
If the first speaker unit and the second speaker unit are modularized with connecting pieces, then the structural layout is simplified, but the space in the housing is wasted
Solution Approach 1:
The patent merges the connecting piece function into the housing structure itself. The housing includes first and second connecting structures that directly connect to the speaker units, eliminating the need for separate connecting pieces. This integration saves space in the housing while maintaining a simplified structural layout for assembling and disassembling the speaker units.
3Device complexity
If a single speaker unit is used, then the device complexity is reduced, but the sound output effect is poor
Solution Approach 1:
The patent segments the speaker system into two specialized speaker units with different sound production frequencies. The first speaker unit produces sounds at a first frequency range while the second speaker unit produces sounds at a second frequency range. This frequency division allows each unit to optimize its performance for specific frequency ranges, significantly improving the overall sound output effect while maintaining manageable device complexity.
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
This design reduces maintenance costs, saves space, and enhances sound quality by improving high-frequency and low-frequency effects, while simplifying manufacturing and maintenance processes.
Implementation Method 1
The first speaker unit produces a sound toward the sound output hole. The second speaker unit is located on a side that is of the first speaker unit and that is away from the sound output hole and is spaced apart from the first speaker unit. A sound production frequency of the second speaker unit is smaller than a sound production frequency of the first speaker unit.
Data Source
AI summary
An earphone, including: a housing, a first speaker unit, a second speaker unit. The housing has a sound output hole. The first speaker unit and the second speaker unit are separately independently fastened in the housing. The first speaker unit produces a sound toward the sound output hole. The second speaker unit is located on a side that is of the first speaker unit and that is away from the sound output hole and is spaced apart from the first speaker unit. A sound production frequency of the second speaker unit is smaller than a sound production frequency of the first speaker unit. A cavity is enclosed by the first speaker unit, the second speaker unit, and an inner wall of the housing, the cavity serves as a front cavity of the second speaker unit, and the front cavity communicates with the sound output hole through a sound output channel.