Motorized Locking Lever With Magnetic Positioning

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Solution Overview

Problem

Existing high-security locks are prone to untimely unlocking due to mechanical shocks and vibrations, as energy transmitted through mechanical contacts causes the locking member to move undesirably, posing a paradox in providing mechanical locking without mechanical contact.

Innovation Solution

A locking device with a motorized lever capable of rotational movement about a stationary axis, where the centre of gravity is on the axis, and the lever is suspended without rigid mechanical contact, using resilient or magnetic elements to filter out shock and high-frequency vibrations, ensuring stability without power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the locking member is in mechanical contact with a stationary stop to provide stable positioning, then the locking member is held firmly in position, but mechanical shocks and vibrations are transmitted through the contact point causing untimely unlocking

Engineering Contradiction:

Improvepositioning stabilityVSAvoidshock transmission

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the traditional mechanical stop contact system with a magnetic field-based positioning system. The locking member is equipped with a magnet that interacts with a ferromagnetic structure in the supporting element, creating a stable positioned without rigid mechanical contact. This substitution eliminates the transmission path for shock waves while maintaining positioning stability through magnetic attraction forces.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the locking member and the supporting structure. Instead of direct mechanical contact between the locking member and stop, a magnet on the locking member creates a magnetic field that interacts with a ferromagnetic structure, providing stable positioning while isolating the locking member from mechanical shock transmission through the supporting element.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If rigid mechanical contact is used to prevent lever movement, then the lever is held securely in position, but external shocks cause energy transmission that ejects the lever from its stable position

Engineering Contradiction:

Improvelocking reliabilityVSAvoidshock force transmission

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The patent replaces rigid mechanical contact with a magnetic field-based holding system. A magnet on the locking member interacts with a ferromagnetic structure in the supporting element, creating a reliable holding force without rigid mechanical contact. This allows the lever to remain securely positioned while preventing the transmission of shock forces that would otherwise cause untimely unlocking.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Stability of the object's composition

If the centre of gravity of the lever is positioned on the rotation axis to eliminate torque from shocks, then rotational stability is improved, but the lever remains vulnerable to shocks transmitted through contact points

Engineering Contradiction:

Improverotational stabilityVSAvoidvibration transmission

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent combines the centre of gravity positioning on the rotation axis with a magnetic field-based positioning system. The magnet on the locking member interacts with a ferromagnetic structure, providing stable positioning without rigid mechanical contact. This dual approach ensures rotational stability while eliminating the transmission path for vibrations and shocks through the supporting element.

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 solution effectively prevents external shocks from causing the lever to rotate, maintaining the lock in a stable position without energy consumption, ensuring secure locking by isolating impact energy at the lever's centre of gravity, thus preventing untimely unlocking.

Implementation Method 1

a magnet (11) mounted on said locking member (5) interacting with a ferromagnetic structure (12) in said supporting element (3)

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

using resilient or magnetic elements to filter out shock and high-frequency vibrations

Methodology Applied

Scientific EffectVibration filtering: Damping

Data Source

PatentUS10550603B2Shock-resistant motorized locking device

Publication Date: 2020.02.04 COGELEC

AI summary

A locking device includes a mobile locking member, movement of which can be prevented by a blocking member interacting with a motorized lever, where the motorized lever is capable of rotational movement about an axis with respect to the supporting structure, the centre of gravity of the lever lying on the axis, the lever being kept in a determined stable position and without rigid mechanical contact of the lever with the supporting structure apart from its axis of rotation.