Magnetic Force Feedback Mechanism for Electronic Accessories
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Solution Overview
Problem
Existing accessory devices for electronic devices lack effective mechanisms to provide tactile feedback to users, relying on mechanical components and motors which are cumbersome and inefficient.
Innovation Solution
The use of magnets with varying magnetic polarities to create a force feedback mechanism, where the magnetic coupling and repelling forces actuate structural components of the accessory device, providing tactile feedback through touch-sensitive layers and coils that respond to user inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical components and motors are used to provide tactile feedback, then force feedback can be achieved, but the device becomes cumbersome and inefficient
Solution Approach 1:
The patent replaces traditional mechanical feedback components (motors, actuators) with a magnetic field-based system. Magnets embedded in the accessory device interact with a magnetometer in the electronic device to provide tactile feedback through magnetic coupling and repelling forces, eliminating the need for complex mechanical moving parts while maintaining force feedback functionality.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the accessory device and the electronic device. The magnets in the accessory device create magnetic fields that interact with the magnetometer in the electronic device, serving as a mediator to transmit force feedback without direct mechanical contact or complex mechanical linkages.
2Productivity
If magnets with varying magnetic polarities are used to create force feedback, then tactile feedback efficiency is improved, but the device requires precise magnetic positioning
Solution Approach 1:
The patent employs magnets with varying magnetic polarities (north and south poles) that can be dynamically activated or deactivated based on user interaction. This dynamic control of magnetic polarity allows the system to provide different types of tactile feedback (attraction or repulsion) without requiring precise physical repositioning of the magnets, reducing manufacturing precision requirements while maintaining feedback efficiency.
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
This solution enables a compact, efficient, and user-interactive force feedback system that mimics tactile keyboard experiences and vibrational sensations without mechanical components, enhancing user interaction with electronic devices.
Implementation Method 1
a second magnet having a first magnetic polarity configured to magnetically couple with the first magnet to drive the first body toward the second body
Implementation Method 2
a third magnet having a second magnetic polarity opposite the first magnetic polarity configured to magnetically repel the first magnet to drive the first body away from the second body
Data Source
AI summary
An accessory device having a first and second body is described. The second body may include a force feedback mechanism that responds to an input received at the first body causing a force feedback. The force feedback mechanism includes coils distributed throughout the second body, with each coil configured to receive an electrical current such that each coil provides an external magnetic field to magnetically couple with one or more magnets disposed in the first body, causing the first body to move in a direction toward the second body. The first body may return to its original position when the external magnetic field is no longer applied. In this regard, the movement of the first body defines the force feedback. Also, the first body may include a keyboard or a touch screen functioning with the force feedback mechanism. The accessory device may be used in conjunction with an electronic device.