Rotatable Lock Pin Cam Track Mechanism for Safe Security
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Solution Overview
Problem
Existing residential and commercial safes are vulnerable to pry attacks and drilling, as lock pins can be bent or disengaged from the door frame, allowing unauthorized access.
Innovation Solution
The implementation of rotatable lock pins with cam tracks and guides that secure the pins to the safe body, preventing them from being forcibly removed or bent, and incorporating features like cross-cuts to catch on the door frame during a pry attempt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional lock pins are used that can be extended and retracted through pin holes in the door panel frame, then the locking mechanism can be operated with a hand wheel or lever to move carriages, but the lock pins can be bent or disengaged from the door frame during a pry attack, allowing unauthorized access
Solution Approach 1:
The lock pin is designed to rotate from a retracted position to an extended position through a pin hole in the door panel frame. The rotation is enabled by a cam track on the lock pin body that engages with a cam guide in the pin hole, transforming the linear motion of the carriage into rotational motion of the lock pin. This dynamic transformation allows the lock pin to achieve both retraction for operation and extension for secure engagement with the door frame, resolving the contradiction between ease of operation and resistance to pry attacks
Solution Approach 2:
The lock pin engagement is moved from a simple linear extension through the pin hole to a rotational engagement where the distal end of the lock pin engages with a structure on the safe body in a different dimensional plane. The cam track and cam guide mechanism enables the lock pin to rotate and engage with the door frame or safe body in a manner that prevents disengagement during pry attacks, adding a rotational dimension to the traditional linear locking mechanism
2Ease of manufacture
If lock pins are made that can be forcibly removed or bent with simple tools, then the locking system can be easily manufactured and operated, but persistent effort with simple tools can effectively bend the door, bolt carriage, and/or the locking bolts, allowing access to the safe interior
Solution Approach 1:
The lock pin is designed with a cam track that enables rotational engagement with the cam guide in the pin hole. This dynamic engagement mechanism transforms the simple linear lock pin into a rotatable component that, when extended, engages with the door frame or safe body in a manner that prevents bending or forced removal. The rotation mechanism allows the lock pin to achieve secure engagement without requiring excessive manufacturing complexity
Solution Approach 2:
The lock pin is pre-configured with a cam track and the safe body or door frame is pre-configured with a cam guide that matches the cam track geometry. This preliminary configuration ensures that when the lock pin is extended, it automatically engages with the cam guide in the correct orientation, preventing any attempt at bending or forced removal before the engagement even occurs. The preliminary setup of the cam track and cam guide provides inherent resistance to pry attacks
Data Source
AI summary
A rotatable lock pin that inhibits forced entry into a container through a closure by securing the lock pin to the container. A lock pin has a pin cylinder with a curvature of rotation that engages with a rotation facilitator. The path of the curvature of rotation and the engagement of the rotation facilitator therewith causes the lock pin to rotate in a pre-determined fashion, so that structures on the lock pin can engage or attach to some part of the container to secure the position of the lock pin and hold the closure door in place. Lock pins of the subject invention utilized with safes can inhibit forced entry through the door by side punching or prying of the door.