Shared Yoke Sounding Device for Thin Double-Sided Audio
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Solution Overview
Problem
Existing double-sided sounding devices are large and heavy, failing to meet user requirements for lightweight and thinness.
Innovation Solution
A sounding device design featuring a bracket with a receiving space containing a vibration system and a magnetic circuit unit, where the magnetic circuit unit includes a shared yoke for two magnetic bodies, reducing thickness and enabling thinness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two sets of sounding systems are arranged in a sounding device to realize double-sided sounding, then the sounding device can meet the requirement for double-sided sounding, but the sounding device becomes large in volume and weight
Solution Approach 1:
The patent merges two independent magnetic circuit units into a single integrated magnetic circuit unit that shares a common yoke structure. The yoke serves both magnetic bodies simultaneously, allowing the device to achieve double-sided sounding while reducing overall volume and weight compared to having two separate complete magnetic circuit units
Solution Approach 2:
The common yoke structure performs multiple functions: it serves as the magnetic circuit path for both the first and second magnetic bodies, provides structural support, and enables both vibration portions to function simultaneously. This multi-functionality reduces the total component count and material usage while maintaining double-sided sounding capability
2Adaptability or versatility
If two sets of sounding systems are arranged in a sounding device to realize double-sided sounding, then the sounding device can meet the requirement for double-sided sounding, but the sounding device becomes large in size
Solution Approach 1:
The patent implements a nested arrangement where the first and second vibration portions are positioned on opposite sides of the common yoke, with magnetic bodies and voice coils arranged in overlapping configurations. This nesting allows both sounding systems to occupy overlapping spatial volumes, significantly reducing the overall thickness of the device while maintaining independent double-sided sound output
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 shared yoke structure reduces the device's thickness, achieving a thin and efficient sounding device capable of producing sound in multiple directions.
Implementation Method 1
The magnetic circuit unit is configured to drive the vibration system to vibrate. The vibration system includes a first voice coil connected to one side of the first diaphragm close to the first magnetic body, and a second voice coil connected to one side of the second diaphragm close to the second magnetic body. The first voice coil is suspended in a gap formed between the first magnetic body and a wall of the first groove, and the second voice coil is suspended in a gap formed between the second magnetic body and a wall of the second groove.
Data Source
AI summary
A sounding device includes a bracket having a receiving space, a vibration system, and a magnetic circuit unit. The magnetic circuit unit drives the vibration system to vibrate. The magnetic circuit unit includes a first magnetic body, a second magnetic body, and a yoke. The yoke includes a bottom wall, a first sidewall, and a second sidewall. The first sidewall and the second sidewall is fixed to the bracket. The first sidewall and the bottom wall form a first groove accommodating the first magnetic body, and the second sidewall and the bottom wall from a second groove accommodating the second magnetic body. An opening of the first groove is oriented opposite to an opening of the second groove. The vibration system includes first and second vibration portions. The magnetic circuit unit is arranged between the first and second vibration portions. In this way, a thin sounding device can be realized.