Tamper-Resistant Locking System with Fragile Connector

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Solution Overview

Problem

Conventional locking systems fail to prevent unauthorized access when tampered with, as they can be compromised by key manipulation or physical attacks such as drilling, which allows the locks to be overridden.

Innovation Solution

A locking system featuring a spring-biased safety bolt system connected to a fragile material releaser, which breaks upon tampering, immobilizing the main lock bolt mechanism, making it impossible to unlock the system without disassembly or destruction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional locking systems are used, then the door can be opened normally with keys, but the locking system can be compromised by tampering or drilling

Engineering Contradiction:
Improvenormal door openingVSAvoidresistance to tampering
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The safety bolt system is pre-configured to detect tampering attempts and automatically activate countermeasures. The fragile connector is intentionally designed to break under tampering forces, triggering the safety mechanism that blocks the lock bolt maneuvering mechanism before unauthorized access can occur.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The system converts the harmful effect of tampering forces into a beneficial security response. When drilling or physical attacks apply force to the locking system, this force causes the fragile connector to break, which in turn activates the safety bolt system to permanently block the lock mechanism, turning the attack into a self-defeating action.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If the locking system includes tamper detection, then security against drilling is improved, but the system complexity increases

Engineering Contradiction:
Improvetamper detection capabilityVSAvoidlocking system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The fragile connector is designed as a disposable, single-use component made of brittle material. It serves its purpose once during normal operation and then deliberately fails when tampering occurs, providing tamper detection without requiring complex reusable sensors or electronic systems.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The locking system performs its own tamper detection and response functions through passive mechanical means. The fragile connector automatically detects tampering through its own structural failure, and the spring-biased safety bolt system automatically activates without requiring external monitoring systems or complex control mechanisms.

Inventive Principle:
Principle #25Self-service

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 effectively secures doors by ensuring that once tampered with, the locking mechanism becomes permanently locked, requiring physical destruction to access the secured space, thereby preventing illicit entry.

Implementation Method 1

a spring biased safety bolt system

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentEP3227514B1Safety locking system
Publication Date: 2020.02.05 CESIUM
  • EP3227514B1 patent drawingFigure 1
  • EP3227514B1 patent drawingFigure 2a~2b
  • EP3227514B1 patent drawingFigure 3a~3b

AI summary

The present invention relates to a locking system which is not possible to unlock if the locks of the locking system are tampered with. The locking system comprises a casing, an operator lock mounted within said casing, a main lock bolt of the locking system which is displaceable between a fully displaced locking position and a fully retracted unlocked position, a main lock bolt maneuvering mechanism operable from outside of said casing and configured to displace said main lock bolt between fully displaced locking position and a fully retracted unlocked position, said lock bolt maneuvering mechanism being configured to be lockable by said operator lock, and at least one safety locking device, wherein said safety locking device is arranged at the operator lock and configured to release a safety bolt system arranged to lock said lock bolt maneuvering mechanism when said lock is tampered with.