Multi-Directional Vibrating Motor With Oblique Magnet Drive

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Solution Overview

Problem

Existing linear motors in portable consumer electronic devices provide only single-direction vibration, limiting their ability to offer diverse vibration feedback for various application scenarios.

Innovation Solution

A vibrating motor design featuring a mass block elastically connected to a housing, with obliquely magnetized magnets providing driving forces in multiple directions, allowing the motor to vibrate at different frequencies in both the first and second directions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a linear motor vibrates in a single direction, then the structure is simple, but the vibration sense provided for different application scenarios is small

Engineering Contradiction:
Improvevibration sense for different application scenariosVSAvoidvibration motor structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dimensionality change by enabling the vibrator assembly to vibrate in multiple directions (first direction and second direction perpendicular to each other) instead of a single direction. The magnets are magnetized obliquely to generate driving forces in both the first and second directions, allowing the motor to provide diverse vibration sensations for different application scenarios while maintaining a relatively simple structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If a linear motor provides single vibration mode, then the device is simple to control, but the vibration feedback is limited

Engineering Contradiction:
Improvevibration feedback typesVSAvoidcontrol complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent applies dynamics by making the vibration characteristics adjustable and variable. The vibrator assembly can vibrate at different frequencies (first vibration frequency in the first direction, second vibration frequency in the second direction) depending on the application scenario. This dynamic capability allows the motor to adapt to different vibration feedback requirements while the control system manages the complexity through scenario-based frequency selection.

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 vibrating motor provides enhanced vibration sensations in multiple directions, enabling more effective vibration feedback for diverse application scenarios, such as gaming and notifications.

Implementation Method 1

The magnets are magnetized obliquely, and the magnets are for providing a first driving force in a first direction and a second driving force in a second direction

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

Two ends of the mass block are elastically connected to the housing

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12289026B2Vibrating motor, electronic device, and control method
Publication Date: 2025.04.29 AAC MICROTECH (CHANGZHOU) CO LTD
  • US12289026B2 patent drawing
  • US12289026B2 patent drawing
  • US12289026B2 patent drawing

AI summary

The present invention provides a vibrating motor, an electronic device, and a control method. The vibrating motor includes a housing, a vibrator assembly and a solenoid assembly. The vibrator assembly includes a mass block defining an accommodating cavity and magnets accommodated in accommodating cavity. The mass block are elastically connected to the housing. The magnets are magnetized for providing driving forces in a first direction and a second direction. The first direction is perpendicular to the second direction. The vibrator assembly vibrates along the first direction at a first vibration frequency. The vibrator assembly vibrates along the second direction at a second vibration frequency, or the solenoid assembly vibrates along the second direction at a third vibration frequency. The vibrating motor provide vibration senses in different directions and provide large vibration senses for different application scenarios, which is conducive to realization of multiple vibration feedback.