Multifunctional Electromagnetic Transducer with Dual Vibration Systems

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Solution Overview

Problem

Conventional speakers struggle to produce high-performance bass due to insufficient driving force, and multifunctional electronic devices face challenges in integrating vibration and voice feedback, leading to poor user experience and increased device volume.

Innovation Solution

A multifunctional electromagnetic transducer design that incorporates a speaker with a first vibration system and magnetic circuit driving a voice diaphragm, along with a vibrator with a second vibration system and magnetic circuit, allowing for synchronized vibration in two directions to enhance driving force and response speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If a conventional speaker uses only a voice diaphragm driven by a magnetic circuit system, then the structure is simple, but the bass performance is poor due to insufficient driving force

Engineering Contradiction:
Improvedriving forceVSAvoidstructure complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The patent merges the functions of a speaker and vibration motor into a single electromagnetic transducer. The first vibration system (voice diaphragm) and second vibration system (vibrator) are integrated within the same device, with both systems sharing the housing and magnetic circuit components. This combination allows the device to provide both audio output and vibration feedback while increasing the overall driving force for bass performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The electromagnetic transducer is designed to perform multiple functions simultaneously: it acts as both a speaker for audio output and a vibration motor for haptic feedback. The dual vibration systems enable the device to produce sound waves through the voice diaphragm while also generating mechanical vibrations through the vibrator, making it a multifunctional component that replaces what would traditionally require separate devices.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Volume of moving object

If vibration feedback and voice feedback are completed by different devices, then each device can be optimized for its specific function, but the device volume increases and integration is difficult

Engineering Contradiction:
Improvedevice volumeVSAvoidfunction integration
Core Design Contradiction:
Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The patent integrates vibration feedback and voice feedback functions into a single electromagnetic transducer device. Both the voice diaphragm system and vibrator system are housed within the same housing, allowing the device to provide both audio and haptic feedback without requiring separate components. This merger reduces the overall device volume while maintaining full functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The electromagnetic transducer is designed as a universal component that performs multiple functions: audio reproduction through the voice diaphragm and vibration feedback through the vibrator. This multifunctional design allows electronic devices to integrate both speaker and vibration motor capabilities in a single component, reducing the number of parts needed and simplifying device architecture.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Loss of time

If a multifunctional sounding device integrates different functions, then device volume is reduced, but the vibration response time is too long and user experience deteriorates

Engineering Contradiction:
Improvevibration response timeVSAvoiduser experience
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The patent segments the vibration generation into two independent systems: the voice diaphragm for audio-related vibrations and a separate vibrator for dedicated vibration feedback. Each system has its own driving mechanism and can operate independently or simultaneously. This segmentation allows each subsystem to respond quickly to its respective control signals without being burdened by the other function, thereby reducing overall response time.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs dynamic control of the dual vibration systems, allowing them to operate independently based on real-time requirements. The voice diaphragm responds to audio signals while the vibrator responds to haptic feedback signals, with both systems capable of rapid response to their respective inputs. This dynamic operation ensures fast response times and maintains good user experience despite the integrated multifunctional design.

Inventive Principle:
Principle #15Dynamics

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 provides improved bass performance and faster response times, enabling a better user experience by combining the functions of a speaker and vibration motor with enhanced driving force and reduced device volume.

Implementation Method 1

a first magnetic circuit system fixed to the housing driving the voice diaphragm to vibrate along a first direction and generate sounds

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

a second magnetic circuit system flexible suspending on the housing driving the voice diaphragm to vibrate; wherein the voice diaphragm, the voice diaphragm and a housing enclosed a rear chamber

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentUS11805366B2Multifunctional electromagnetic transducer
Publication Date: 2023.10.31 AAC MICROTECH (CHANGZHOU) CO LTD
  • US11805366B2 patent drawing
  • US11805366B2 patent drawing
  • US11805366B2 patent drawing

AI summary

The present invention provides a multifunctional electromagnetic transducer including: a housing providing with an accommodation space; a speaker received in the accommodation space, the speaker including: a first vibration system with a voice diaphragm, and a first magnetic circuit system fixed to the housing driving the voice diaphragm to vibrate along a first direction and generate sounds; a vibrator received in the accommodation space driving the multifunctional electromagnetic transducer to vibrate along a second direction, the vibrator including: a second vibration system with a vibration diaphragm, and a second magnetic circuit system flexible suspending on the housing driving the voice diaphragm to vibrate; wherein the voice diaphragm, the voice diaphragm and a housing enclosed a rear chamber.