Separate-Cavity Dual-Conduction Earphone Assembly for Lower Weight
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Solution Overview
Problem
Current earphones are limited to either air-conducting or bone-conducting types, restricting sound quality improvement, and the weight of the loudspeaker assembly in bone-conducting earphones affects sound quality.
Innovation Solution
A loudspeaker assembly incorporating a shell assembly with separate accommodation cavities for bone-conducting and air-conducting loudspeakers, featuring a magnetic circuit system with a weight reduction structure such as grooves or through holes in the magnetic conduction assembly to reduce overall weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both bone-conducting and air-conducting loudspeakers are integrated in the same earphone, then sound quality is improved, but the overall weight of the loudspeaker assembly increases
Solution Approach 1:
The patent divides the loudspeaker assembly into distinct components: a bone-conducting loudspeaker unit and an air-conducting loudspeaker unit, each housed in separate cavities within the shell. This segmentation allows independent optimization of each unit's weight and structure, enabling the integration of both types without excessive weight increase.
Solution Approach 2:
The air-conducting loudspeaker is nested within the shell assembly that also contains the bone-conducting loudspeaker. The magnetic circuit system components (magnet, magnetic conduction assembly) are arranged in a compact nested configuration, allowing both loudspeaker types to coexist in a space-efficient manner that minimizes overall weight.
2Reliability
If the magnetic conduction assembly is made larger to improve magnetic conduction, then magnetic conduction performance is improved, but the weight of the air-conducting loudspeaker increases
Solution Approach 1:
The patent applies local quality by concentrating magnetic conduction materials only in areas where they are most needed for effective magnetic flux conduction. The magnetic conduction assembly is strategically positioned and dimensioned to provide sufficient magnetic conduction performance without unnecessary material, thereby reducing weight while maintaining reliability.
3Reliability
If the loudspeaker assembly weight is reduced to improve bone-conducting sound quality, then bone-conducting loudspeaker performance is improved, but the structural integrity may be compromised
Solution Approach 1:
The patent employs composite material construction in the shell assembly and internal components, combining materials with different properties to achieve both lightweight characteristics and sufficient structural strength. This allows the assembly to be light enough for high-quality bone conduction while maintaining the integrity needed to house both loudspeaker types.
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
Effectively reduces the weight of the air-conducting loudspeaker, enhancing the operational stability and sound transmission quality of the bone-conducting loudspeaker, thereby improving the overall sound quality of the earphone.
Implementation Method 1
The magnetic circuit system includes a magnet and a magnetic conduction assembly
Implementation Method 2
the magnetic conduction assembly being fixed in the second accommodation cavity, and the magnetic conduction assembly being provided with a weight reduction structure
Data Source
AI summary
The present disclosure relates to a loudspeaker assembly comprising a shell assembly, a bone-conducting loudspeaker, an air-conducting loudspeaker, and a circuit system. The shell assembly includes a first accommodation cavity and a second accommodation cavity. The bone-conducting loudspeaker is accommodated in the first accommodation cavity and the air-conducting loudspeaker is accommodated in the second accommodation cavity. The air-conducting loudspeaker includes a magnetic circuit system that includes a magnet and a magnetic conduction assembly. The magnet is fixed on the magnetic conduction assembly, the magnetic conduction assembly is fixed in the second accommodation cavity, and the magnetic conduction assembly is provided with a weight reduction structure.