Mortise Lock Independent Hub Actuators for Secure Lockdown

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Solution Overview

Problem

Conventional mortise locks lack effective mechanisms to independently inhibit the retraction of a latch bolt using multiple actuators, particularly in response to remote lockdown commands, which can lead to security vulnerabilities.

Innovation Solution

A mortise lock system featuring a common hub lock that can be actuated by multiple independent hub lock actuators, where one actuator is electrically driven and responsive to remote commands, and the other is mechanically driven, allowing for secure inhibition of latch bolt retraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional mortise lock uses a single hub mechanism, then the structure is simple, but it cannot independently inhibit latch bolt retraction from multiple actuators, creating security vulnerabilities

Engineering Contradiction:

ImprovesecurityVSAvoidstructure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The lock mechanism is segmented into multiple independent actuators (first and second hub lock actuators) that can independently control the hub lock position, allowing separate control paths for different security scenarios while maintaining a unified locking mechanism

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The common hub lock serves multiple functions by being controllable from both the first and second actuators, enabling the same locking component to respond to different control inputs (local and remote) and achieve secure lockdown through either actuator independently

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the hub lock can be actuated by multiple independent actuators, then security is enhanced through independent control, but the device complexity increases

Engineering Contradiction:

Improveindependent actuationVSAvoidactuator system

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The common hub lock is designed to receive actuation signals from multiple independent actuators, making it a universal control point that responds to different input sources (mechanical key operation and electronic remote commands) through the same locking mechanism

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Multiple actuator control paths are merged into a single hub lock mechanism, where both the first hub lock actuator and second hub lock actuator converge on the same common hub lock, simplifying the overall system by combining multiple control inputs into one unified locking action

Inventive Principle:

Principle #5Merging (Combining)

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 system ensures secure lockdown by preventing retraction of the latch bolt even when one actuator is activated, enhancing security and usability with independent actuation mechanisms.

Implementation Method 1

One of the plurality of hub lock actuators may be electrically driven

Methodology Applied

Scientific EffectElectrical energy transformation:

Implementation Method 2

the first hub lock actuator is driven in response to a mechanical input

Methodology Applied

Scientific EffectMechanical energy transmission:

Data Source

PatentUS10961746B2Mortise lock and mortise lock systems and methods

Publication Date: 2021.03.30 DORMAKABA USA INC

AI summary

A mortise lock system may include a plurality of hub lock actuators which may be independently actuatable to inhibit a retraction of a latch bolt of the mortise lock system. One of the plurality of hub lock actuators may be electrically driven and responsive to a lockdown command received from a remote device.