Electromechanical Latch Motor-Driven Bolt Security

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Solution Overview

Problem

There is a need for improved latching systems that enhance security by preventing unauthorized opening, particularly in applications where electrically operated latches are desirable for remote or key-less access and monitoring.

Innovation Solution

An electromechanical locking latch assembly with a motor-driven latch bolt that moves between extended and retracted positions, utilizing a rotatable output shaft arrangement and a spring-loaded lever to automatically open the door when the latch is retracted, and a sensor system to monitor and control the latch's position for secure locking and unlocking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a motor-driven latch bolt with rotatable output shaft is used to enable remote or key-less access, then ease of operation is improved, but device complexity increases

Engineering Contradiction:

Improveremote or key-less accessVSAvoidmotor-driven latch mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical key-based locking mechanisms with an electromechanical motor-driven system. The motor assembly with rotatable output shaft arrangement converts electrical signals into mechanical motion to extend and retract the latch bolt, enabling remote or key-less access while eliminating the need for physical keys or manual manipulation of locking components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The rotatable output shaft arrangement acts as an intermediary between the motor and the latch bolt. This intermediate mechanism translates rotational motor motion into linear latch bolt movement, providing a controlled and reliable connection that enables remote operation while managing the complexity through modular design.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a protrusion and stopping surface mechanism is added to prevent unauthorized opening, then security is improved, but device complexity increases

Engineering Contradiction:

Improvesecurity against unauthorized openingVSAvoidprotrusion and stopping surface mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs a dynamic locking mechanism where the protrusion and stopping surface are positioned to engage only when the latch bolt is in the extended position. This dynamic arrangement provides security against unauthorized opening while allowing controlled retraction through the motor-driven system, balancing security requirements with operational flexibility.

Inventive Principle:

Principle #15Dynamics

3Reliability

If a sensor system is implemented to monitor latch position for controlled opening, then reliability is improved, but device complexity and cost increase

Engineering Contradiction:

Improvecontrolled door openingVSAvoidsensor and controller system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent incorporates a sensor system that monitors the position of the latch bolt and provides feedback to the controller. This feedback mechanism enables the controller to determine when the latch is extended or retracted and to control the motor accordingly, ensuring reliable and controlled door opening operations while maintaining security protocols.

Inventive Principle:

Principle #23Feedback

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 provides enhanced security by ensuring the latch remains locked unless intentionally unlocked, allowing for remote control and automatic door opening, thereby preventing unauthorized access while maintaining ease of use.

Implementation Method 1

A motor having a rotatable output shaft arrangement is either directly or indirectly connected to the latch bolt for moving the latch bolt between the extended and retracted positions

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

A spring-loaded lever is attached to the housing for biasing the electronic latch assembly away from the door opening when the latch bolt is maintained in the retracted position

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11248395B2Electromechanical locking latch

Publication Date: 2022.02.15 SOUTHCO INC

AI summary

An electronic latch assembly includes a latch bolt movable between an extended position and a retracted position; and a motor having a rotatable output shaft arrangement that is either directly or indirectly connected to the latch bolt for moving the latch bolt between the extended and retracted positions and rotating the output shaft arrangement between a first angular position in which the latch bolt is capable of being translated to the retracted position and a second angular position in which the latch bolt is locked and not capable of being translated to the retracted position.