Dual-Sided Speaker Structure for Shell Vibration Reduction
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Solution Overview
Problem
Current mobile phone speakers experience severe shell vibration and poor frequency response sensitivity, particularly when excitation voltage is high, leading to a poor user experience.
Innovation Solution
A speaker design featuring a magnetic yoke and basin frame connected by an elastic connection member, with opposite vibration directions for the magnetic circuit and vibration systems, and dual-sided sound output through upper and lower housings, enhancing sensitivity and reducing vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the excitation voltage is increased to enhance sound output power, then the sound output power is improved, but the shell vibration becomes severe
Solution Approach 1:
The patent introduces a magnetic circuit system that vibrates in opposition to the diaphragm's vibration. The magnetic circuit system includes a magnetic yoke and magnetic assembly that generate opposing forces to counterbalance the shell vibration caused by high excitation voltage, thereby reducing harmful shell vibration while maintaining sound output power
Solution Approach 2:
The patent converts the harmful shell vibration into a beneficial dual-sided sound output mechanism. The magnetic circuit system's vibration, which initially contributes to shell vibration, is harnessed to create a second sound output path through the lower housing, transforming the harmful vibration into useful acoustic output
2Ease of manufacture
If the speaker structure is simplified to reduce manufacturing complexity, then the manufacturing cost is reduced, but the frequency response sensitivity is insufficient
Solution Approach 1:
The patent makes the magnetic circuit system serve multiple functions: it acts as both the magnetic driving component for the diaphragm and as a separate vibration source for dual-sided sound output. This multi-functionality enhances frequency response sensitivity without requiring additional dedicated components, thereby avoiding excessive manufacturing complexity
Solution Approach 2:
The patent adds a vertical dimension to the sound output by creating a second sound output path through the lower housing that outputs sound from the magnetic circuit system's vibration. This dimensional addition improves frequency response sensitivity without significantly increasing manufacturing 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
The design achieves reduced shell vibration and improved frequency response sensitivity through dual-sided sound output and opposing vibration forces, providing a better user experience.
Implementation Method 1
the magnetic circuit system configured for driving the vibration system to vibrate and produce sound
Implementation Method 2
An elastic connection member connecting the magnetic yoke and the basin frame to support the vibration of the magnetic circuit system
Implementation Method 3
Vibration directions of the magnetic circuit system and the vibration system being opposite
Data Source
AI summary
The present invention relates to the technical field of electroacoustic conversion and provides a speaker, the speaker of the present invention connects a magnetic yoke and a basin frame through an elastic connection member to support a magnetic circuit system in vibration, a diaphragm, the magnetic yoke, the basin frame, and an elastic connection member together form a sealed back cavity. The vibration directions of the magnetic circuit system and the vibration system are in opposite directions. An upper housing and a lower housing are respectively fixed to the opposite sides of the basin frame, the upper housing, the diaphragm, and the basin frame together form a first front cavity for sound output, and the lower housing, the magnetic yoke, and the basin frame together form a second front cavity for sound output, so as to realize dual-sided sound output from the speaker.