Integrated Sounding Device With Shared Magnetic Circuit
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Solution Overview
Problem
Existing mobile devices face challenges with separate speaker and vibration motor components, occupying significant space and increasing assembly complexity and cost.
Innovation Solution
A sounding device integrating a sounding unit with a magnetic circuit system and vibration system, sharing components to reduce space and cost, featuring a coil fixed to a housing body to drive vibration in a perpendicular direction, and an elastic assembly to suspend a box in a containment cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If speaker and vibration motor are independently separated, then each component can be optimized independently, but device thickness and assembly complexity increase
Solution Approach 1:
The patent combines the speaker and vibration motor into a single integrated sounding device. The magnetic circuit system serves both the voice coil for sound generation and the vibration coil for haptic feedback, eliminating the need for separate motor components and reducing overall device thickness while maintaining independent optimization capabilities through separate coil windings and control circuits.
Solution Approach 2:
The magnetic circuit system is designed with dual functionality: it generates acoustic output through the voice coil and electromagnetic driving force through the vibration coil. This multi-functional design allows a single component structure to perform both speaker and motor functions, reducing the number of parts and assembly steps while enabling independent optimization of each function through separate control.
2Reliability
If speaker and vibration motor are independently separated, then each component can be optimized independently, but manufacturing cost increases
Solution Approach 1:
The patent merges the speaker and vibration motor into a single integrated unit with shared components including the magnetic circuit system, housing, and suspension structure. This consolidation reduces the total number of parts, simplifies manufacturing processes, and lowers assembly costs while maintaining the ability to independently optimize each functional component through separate coil designs and control circuits.
3Adaptability or versatility
If separate speaker and motor components are used, then assembly flexibility is maintained, but assembly complexity and time increase
Solution Approach 1:
The integrated sounding device combines speaker and vibration motor functions into a single pre-assembled unit, reducing the number of assembly steps required in the final device. The unified structure with shared magnetic circuit system and housing eliminates multiple alignment and fastening operations, thereby improving assembly efficiency and productivity while maintaining design flexibility through modular integration.
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 integrated design minimizes component count, simplifies assembly, reduces device thickness, and lowers manufacturing costs while maintaining speaker and motor performance.
Implementation Method 1
a magnetic circuit system for driving the vibration system to vibrate along a first direction
Implementation Method 2
The coil is fixed to the housing body for driving the sounding unit to vibrate in a second direction perpendicular to the first direction
Implementation Method 3
an elastic assembly with one end connected to the housing body and the other end connected to the box for elastically suspending the box in the containment cavity
Data Source
AI summary
The present invention provides a sounding device including a housing body having a containment cavity and a sounding unit placed in the containment cavity. The sounding unit includes a vibration system and a magnetic circuit system. The sounding device includes a box, a coil, a circuit board, and an elastic assembly. The elastic assembly is used to suspend the box in the containment cavity. The present invention coil shares a magnetic circuit system with the vibration system and the sounding unit is directly used as the weight unit of the coil. The parts are shared to the greatest extent, the assembly process is simplified, and the cost is reduced.