Dual-Vibrator Linear Motor for Expanded Vibration Frequency Range
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Solution Overview
Problem
Existing vibration motors have a limited range of vibration frequencies and inadequate vibration effects due to the use of a single vibrator, which fails to meet the requirements of modern portable consumer electronic devices that need more sophisticated feedback systems.
Innovation Solution
A linear vibration motor design featuring a housing with dual vibrators and elastic support components, where two coils and an iron core generate a magnetic field to drive the vibrators to vibrate independently, achieving a dual-resonator effect through C-type and wavy springs, allowing for enhanced vibration frequency and range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only one vibrator is used in the vibration motor, then the structure is simple, but the vibration frequency range is limited and the vibration effect is insufficient
Solution Approach 1:
The single vibrator is segmented into two independent vibrators (first vibrator and second vibrator) with different vibration characteristics. Each vibrator can operate independently or in combination, enabling the system to achieve a broader vibration frequency range and more diverse vibration effects while maintaining a relatively compact structure.
2Adaptability or versatility
If a dual-resonator design is implemented, then the vibration frequency range and effectiveness are improved, but the device complexity increases
Solution Approach 1:
The first vibrator and second vibrator are merged into a single integrated vibration motor structure, sharing common components such as the magnetic field generation system and housing. This combining approach allows the dual-resonator design to achieve enhanced vibration performance while minimizing the increase in overall device complexity and size.
Solution Approach 2:
The magnetic field generation system serves multiple functions: it generates magnetic fields for both the first vibrator and the second vibrator, and can operate in different modes (single vibrator mode, dual vibrator mode) to provide versatile vibration effects. This multi-functionality reduces the need for separate dedicated components for each vibrator.
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 dual-resonator design significantly improves vibration frequency range and effectiveness, providing more robust and reliable vibration feedback suitable for advanced portable electronic devices.
Implementation Method 1
two coils and an iron core generate a magnetic field to drive the vibrators to vibrate independently
Implementation Method 2
two coils and an iron core generate a magnetic field to drive the vibrators to vibrate independently
Implementation Method 3
an elastic part connecting the housing and the vibrator. The elastic part supports the vibrator to move reciprocally in the housing to vibrate
Data Source
AI summary
A vibration motor in the present disclosure includes a housing, vibrators accommodated in the housing, a driving apparatus configured to drive the vibrators to vibrate, and elastic support components elastically supporting the vibrators. The driving apparatus includes coils disposed on the top wall and/or the bottom wall and an iron core that is disposed corresponding to the coils and that is fixedly connected to the housing. The vibrators include a first vibrator and a second vibrator. The first vibrator includes a first mass block and a first magnetic steel connected to the first mass block. The second vibrator includes a second mass block and a second magnetic steel connected to the second mass block. The elastic support components include a first elastic support component and a second elastic support component disposed at two sides of the vibrator.