Multifunctional Sounding Device for Compact Vibration and Voice Feedback
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Solution Overview
Problem
Existing portable electronic devices face challenges in reducing size while maintaining both vibration and voice feedback functions, as these functions are typically provided by separate devices, which increases device size and complexity.
Innovation Solution
A multifunctional sounding device is designed with a housing body containing a sounding unit that integrates a vibration system driven by a magnetic circuit with a main magnet and secondary magnet, an elastic assembly, and a driving coil, allowing for both vibration and voice feedback in a compact form, reducing the overall volume of the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate devices are used for vibration feedback and voice feedback, then each function can be performed independently, but the device size increases and miniaturization becomes difficult
Solution Approach 1:
The patent combines the voice feedback function and vibration feedback function into a single sounding device. The magnetic circuit system generates both the magnetic field for voice coil operation (producing sound waves) and the Lorentz force for vibration motor operation (producing haptic feedback). This merging of functions into one integrated unit directly reduces device volume while maintaining both feedback capabilities.
Solution Approach 2:
The sounding device is designed as a multi-functional component that simultaneously provides acoustic output through the voice coil and diaphragm, and haptic output through the vibration motor. The magnetic circuit system serves dual purposes by generating forces for both the voice coil and the driving coil, making the device universal in its feedback capabilities and eliminating the need for separate voice module and vibration motor.
2Reliability
If separate devices are used for vibration feedback and voice feedback, then functional independence is maintained, but device complexity increases
Solution Approach 1:
The patent merges the voice feedback system and vibration feedback system into a single integrated sounding device with shared magnetic circuit components. The magnetic circuit system serves both the voice coil and driving coil, reducing the number of independent subsystems while maintaining distinct functional pathways for acoustic and haptic feedback.
Solution Approach 2:
The sounding device achieves multi-functionality by using the magnetic circuit system to provide forces for both voice coil operation (acoustic feedback) and driving coil operation (vibration feedback). This universal design reduces system complexity by eliminating redundant magnetic circuits while preserving functional independence through separate coil assemblies and feedback pathways.
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 device effectively provides both vibration and voice feedback functions in a single, compact unit, reducing the size and complexity of electronic devices while maintaining performance, thereby addressing the challenge of miniaturization.
Implementation Method 1
a magnetic circuit system, comprising a main magnet and a secondary magnet arranged around the main magnet to form a magnetic gap for driving the vibration system to vibrate
Implementation Method 2
a driving coil fixed to the weight... the magnetic circuit system... for driving the vibration system to vibrate
Data Source
AI summary
The invention provides a multifunctional sounding device having a housing body with a containment cavity and a sounding unit. The sounding unit includes a vibration system and a magnetic circuit system that drives the vibration system along a first direction. The magnetic circuit system includes a main magnet and a secondary magnet to form a magnetic gap. The multifunctional sounding device further includes an elastic assembly fixedly connected to the housing body, a weight connected to the elastic assembly, and a driving coil fixed to the weight and vibrating together with the weight along a second direction. The driving coil includes a first side edge and a second side edge disposed opposite to the first side edge. The device has both a vibration feedback function and a voice feedback function, which is beneficial to reduce the volume of the electronic device.