Linear Motor with Perpendicular Coils for Bidirectional Vibration
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Solution Overview
Problem
Existing linear motors in portable consumer electronics provide a monotonous vibration experience due to their limited unidirectional vibration mode and narrow frequency band, which restricts the variety of feedback options for users.
Innovation Solution
A linear motor design featuring a housing with a stator comprising perpendicular iron cores and coils, along with a flexible support and a mass block with magnetic steel, allowing for bidirectional vibration by utilizing different magnetic-field components, thereby expanding the frequency band and enriching the vibration effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a unidirectional driving force is used in the linear motor, then the structure is simple, but the vibration frequency bandwidth is narrow and the vibration effect is monotonous
Solution Approach 1:
The patent introduces a second iron core and second coil perpendicular to the first iron core and first coil, transforming the single-direction driving force into multi-directional driving forces. This dimensional expansion enables the motor to generate vibration in multiple directions (X and Y directions), thereby widening the vibration frequency bandwidth and enriching the vibration effect without significantly complicating the overall structure.
2Device complexity
If a unidirectional driving force is used in the linear motor, then the structure is simple, but the vibration effect is monotonous
Solution Approach 1:
By adding the perpendicular second iron core and second coil, the system gains the ability to generate driving forces in multiple directions. This enables rich vibration effects including bidirectional vibration, complex vibration patterns, and enhanced feedback experiences, while maintaining relative structural simplicity through the modular addition of perpendicular components.
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 motor achieves double vibration output in X and Y directions, widening its frequency band and enhancing the vibration experience, providing a richer feedback mechanism for users.
Implementation Method 1
The magnet assembly includes a magnetic steel and a coil, which work together to generate a unidirectional driving force
Implementation Method 2
the coil includes a first coil winded on the first iron core and a second coil winded on the second iron core
Implementation Method 3
a flexible support connecting to the housing and suspending the vibrator in the receiving cavity
Data Source
AI summary
The present application discloses a linear motor, which includes a housing having a receiving cavity, a vibrator received in the receiving cavity, a stator received in the receiving cavity, and a flexible support connecting to the housing and suspending the vibrator in the receiving cavity. The stator includes an iron core fixed to the housing and a coil winded on the iron core. The iron core includes a first iron core and a second iron core perpendicular to the first iron core, the coil includes a first coil winded on the first iron core and a second coil winded on the second iron core, and the winding directions of the first coil and the second coil are perpendicular to each other. The linear motor of the present invention not only effectively widens the working frequency band of the motor, but also enriches the vibration effect of the motor.