Door Latch Shutter Mechanism Against Lock Bolt Tampering
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Solution Overview
Problem
Existing door locking systems are susceptible to tampering, which compromises their security by preventing the lock bolt from extending into the aperture or opening, thereby compromising the door's secure closure.
Innovation Solution
A locking system with a lock bolt and shutter mechanism that moves between extended and retracted positions, where the shutter covers the opening when the lock bolt is retracted, and vice versa, using actuation systems to synchronize their movements, preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the housing enclosing the locking system is made susceptible to tampering, then the locking system can be easily installed and accessed, but the security is compromised as tampering can prevent the lock bolt from extending into the aperture
Solution Approach 1:
The shutter is positioned to cover the aperture before the lock bolt can be tampered with or forced through. When the door is closed, the shutter blocks the aperture, preventing any object from being forced through. This preliminary protective action occurs before any potential tampering can succeed, thereby maintaining security while allowing normal operation.
2Reliability
If the lock bolt is extended to secure the door, then the door locking function is achieved, but the opening remains vulnerable to tampering and forced entry
Solution Approach 1:
The shutter acts as an intermediary protective element between the aperture and any potential tampering forces. It is coupled to the lock bolt mechanism and moves with it, providing additional protection. The shutter blocks the aperture when the lock bolt is retracted, and moves accordingly when the lock bolt extends, thereby maintaining the locking function while preventing harmful factors from reaching the aperture.
3Reliability
If the shutter covers the opening when the lock bolt is retracted, then security against forced entry is improved, but the complexity of the locking system increases
Solution Approach 1:
The shutter is merged with the lock bolt mechanism, sharing common components such as the actuation system and mounting structure. Both the shutter and lock bolt are coupled to the same actuation mechanism, allowing them to move in coordination. This merging reduces the overall complexity compared to having separate independent systems, while still providing the enhanced security function of the shutter blocking the aperture.
Data Source
AI summary
A locking system includes a first housing, a lock bolt, and a shutter. The first housing defines an opening. The lock bolt is supported by the first housing and configured to move between an extended position and a retracted position. The shutter is supported by the first housing and configured to move between an uncovered position and a covered position. The shutter is in the uncovered position when the lock bolt is in the extended position. The shutter is in the covered position when the lock bolt is in the retracted position.