Embedded Directional Microphone Layout for Lightweight Smart Glasses
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Solution Overview
Problem
The integration of a microphone in smart glasses leads to a significant increase in overall volume and weight, compromising the lightweight and convenient design.
Innovation Solution
The smart glasses incorporate a directional microphone module embedded in the frame through an insert molding process, ensuring a seamless integration with the body of the glasses, reducing assembly gaps and enabling a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a microphone is added to smart glasses to expand functions, then the sound reception capability is improved, but the overall volume and weight of the glasses increase significantly
Solution Approach 1:
The microphone module is embedded within the frame body structure, nesting the microphone component inside the existing frame cavity. This allows the microphone to be integrated into the frame without requiring additional external space, thereby adding sound reception capability while avoiding significant increases in overall volume and weight
Solution Approach 2:
The microphone module is merged with the frame body through insert molding, combining two previously separate components (microphone and frame) into a single integrated structure. This merging eliminates the need for separate mounting hardware and reduces overall assembly weight while maintaining sound reception functionality
2Adaptability or versatility
If a microphone is added to smart glasses to expand functions, then the sound reception capability is improved, but the overall volume of the glasses increases significantly
Solution Approach 1:
The microphone module is nested within the frame body's internal cavity space, utilizing otherwise unused volume within the existing frame structure. This nesting approach allows the microphone to be housed without increasing the external dimensions of the glasses
Solution Approach 2:
The microphone module is positioned in the depth dimension of the frame body rather than extending the external length, width, or height. By utilizing the internal depth space of the frame, the design adds functionality without increasing the overall external volume of the glasses
3Ease of manufacture
If traditional assembly methods are used to integrate the microphone module, then assembly flexibility is maintained, but assembly gaps increase and manufacturing precision decreases
Solution Approach 1:
The insert molding process merges the microphone module assembly with the frame body in a single integrated manufacturing step. The microphone module is inserted into the mold cavity and the frame material is molded around it, creating seamless integration without assembly gaps. This combining of operations maintains manufacturing efficiency while achieving high precision
Solution Approach 2:
The microphone module is pre-assembled and positioned within the mold cavity before the frame material is molded. This preliminary positioning ensures precise placement and orientation of the microphone module relative to the frame body, eliminating assembly gaps that would occur with post-assembly methods
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
The solution maintains a lightweight and compact form factor while providing enhanced sound reception and waterproofing, with reduced sound leakage and assembly errors.
Implementation Method 1
An insert molding process is performed to form a second member of the body. The second member is closely combined with the directional microphone module and the first member that have been assembled.
Data Source
AI summary
Provided are smart glasses and a manufacturing method thereof. The smart glasses include a frame, a motherboard and a directional microphone module. The frame includes a body and two temples. The body has a first opening. The motherboard is disposed in one of the temples. The directional microphone module is embedded in the body and closely combined with the body. The directional microphone module is electrically connected to the motherboard and has a first sound receiving hole. The first sound receiving hole communicates with the first opening.