Bolt Lock Security: Hinged Locking Against Vibration Unlocking
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Solution Overview
Problem
Existing lock security systems are vulnerable to unauthorized tampering, particularly through intense vibrations that can momentarily unlock the bolt, and existing anti-tamper cams are insufficient to prevent unauthorized access.
Innovation Solution
A security system for locks equipped with a closed-door detector and an anti-tamper cam that moves to a locking position upon door closure, combined with a hinged locking element that rotates to act as a stop for the bolt, preventing unlocking during intense vibrations, and geometric conditions ensuring the hinged locking element locks the bolt before the anti-tamper cam ceases to do so.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an anti-tamper cam is used to prevent unauthorized access, then security against card tampering is improved, but the lock becomes vulnerable to intense vibrations that can momentarily move the cam and unlock the bolt
Solution Approach 1:
The locking mechanism is divided into two independent segments: the anti-tamper cam for preventing card insertion and the hinged locking element for vibration resistance. Each segment addresses a specific threat independently, so failure of one does not compromise overall security.
Solution Approach 2:
The hinged locking element is positioned in advance to engage with the bolt before any tampering attempt occurs. This preliminary positioning ensures that even if vibrations momentarily move the anti-tamper cam, the bolt cannot be extracted because it is already constrained by the hinged element.
2Reliability
If a hinged locking element is added to prevent vibration-induced unlocking, then security against intense vibrations is improved, but device complexity increases
Solution Approach 1:
The hinged locking element serves multiple functions: it acts as a stop for the bolt during normal operation, provides vibration resistance through its hinged movement, and works in conjunction with the anti-tamper cam to create layered security. This multi-functionality reduces the need for additional dedicated components.
Solution Approach 2:
The hinged locking element is designed to be dynamic rather than static. It remains out of the way during normal operation and only engages when needed (during vibrations or tampering attempts), reducing interference with normal lock operation while providing security when required.
3Reliability
If the anti-tamper cam is positioned to effectively block card insertion, then protection against plastic card tampering is improved, but the cam may interfere with normal bolt operation
Solution Approach 1:
The anti-tamper cam is positioned at a specific location where it only interacts with the bolt during tampering attempts or when the door is closed. The cam's geometry is designed so that it presents an obstacle to card insertion while allowing normal bolt movement during legitimate lock operation.
Solution Approach 2:
The anti-tamper cam is designed to be movable rather than fixed. It rotates or moves to a blocking position only when the door is closed (detected by the closed-door detector), and returns to a non-interfering position during normal operation, thus adapting its function based on operational context.
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 prevents unauthorized access by ensuring the bolt remains locked even under intense vibrations, enhancing security and preventing tampering.
Implementation Method 1
The bolt of the present lock is loaded by means of a spring, which allows it to keep its position while providing resistance to the movement of said bolt
Data Source
AI summary
A security system for bolt locks provided with a closed-door detector, an anti-tamper cam and a hinged locking element with a second axis of articulation and which is provided with a bolt locking portion.