Magnetic Operating Mechanism for Vibration-Resistant Input Reset

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Solution Overview

Problem

Conventional operating mechanisms using mechanical springs face issues with durability due to impacts, vibrations, and wear, leading to reduced lifespan and reliability, especially in electronic devices requiring precise user input operations.

Innovation Solution

An operating mechanism utilizing a magnetic member and magnet system to reset and hold a movable operating member in an initial position, reducing friction and wear, and enhancing durability and impact resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mechanical springs are used to maintain the operation at a neutral position, then the operating mechanism can provide securing and support functions, but the reliability deteriorates due to damages from drops, vibrations, and continuous user input

Engineering Contradiction:

ImprovereliabilityVSAvoidimpact damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical spring system with a magnetic field-based system. Magnets are embedded in the operating member and housing to create magnetic attraction forces that restore the operating member to its neutral position, eliminating the need for mechanical springs that are susceptible to impact damage and fatigue

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Duration of action of moving object

If mechanical springs are used to provide restoring force, then the operating mechanism can return to initial position, but wear and friction occur at contact points reducing precision over time

Engineering Contradiction:

ImprovelifespanVSAvoidfriction and wear

Core Design Contradiction:

Duration of action of moving objectVSObject-generated harmful factors

Solution Approach 1:

The magnetic field-based restoring force eliminates the need for mechanical contact between spring components and the operating member, thereby eliminating friction and wear at contact points while maintaining the ability to return to the initial position

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic field acts as an intermediary force that transmits the restoring force without requiring direct mechanical contact between moving parts, thus eliminating wear and friction while maintaining functional performance

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If potentiometers are used for resistance reading, then user input can be detected, but wear from repeated inputs causes drift and unintended inputs

Engineering Contradiction:

Improveinput detection accuracyVSAvoidinput accuracy

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent replaces potentiometers with magnetic sensors that detect the position of the operating member through magnetic field interactions without physical contact, eliminating wear-induced drift while maintaining precise input detection capability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If mechanical springs are designed to be resistant to vibrations and drop impacts, then durability improves, but design complexity and manufacturing difficulty increase significantly

Engineering Contradiction:

ImprovedurabilityVSAvoiddesign complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical spring designs with a simpler magnetic field-based system where magnets are embedded in standard positions, significantly reducing design complexity while improving durability against vibrations and impacts

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 magnetic system improves the operating mechanism's durability, impact resistance, and wear resistance, ensuring reliable and precise user input operations even under adverse conditions.

Implementation Method 1

a magnetic member, having a magnetic force to the magnet, where the magnetic member and the magnet are configured to reset and/or hold the movable operating member in an initial position under the magnetic force

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS20250379009A1Operating mechanism and operation input device

Publication Date: 2025.12.11 AAC TECHNOLOGIES PTE LTD

AI summary

Disclosed are an operating mechanism and an operation input device. The operating mechanism includes: a housing having an accommodation space, a movable operating member received in the accommodation space and at least partially extending outside the housing, a support member configured to support the movable operating member. The movable operating member is movable around the support member. The operating mechanism includes a magnet connected to the movable operating member, and a magnetic member having a magnetic attraction to the magnet. The magnetic member and the magnet are configured to reset and/or hold the movable operating member in an initial position through the magnetic attraction. The operating mechanism according to embodiments of the present disclosure is resistant to vibration and drop impacts, the reliability of the operating mechanism is less affected by assembly processes, and high durability is achieved in response to user inputs.