Movable Bolt Pan Safe Door Reinforcement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
B-rated safes, constructed with light gauge steel, lack sufficient burglary resistance and strength in their door-to-body interface, making them vulnerable to pry attacks and inadequate for modern security needs, particularly in protecting cash deposits and maintaining chain of custody.
Innovation Solution
A movable bolt pan design where the entire bolt pan frame is secured directly to the safe door, covering a large percentage of the door slab, providing increased strength and contact with the door jamb, and allowing lateral movement for opening, which enhances the locking mechanism's resistance to pry attacks and improves the door-to-body interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light gauge steel is used to construct the safe door and bolts, then manufacturing cost is reduced and weight is decreased, but burglary resistance and strength of the door-to-body interface deteriorate
Solution Approach 1:
The patent employs a composite construction combining light gauge steel door panels with a heavy-duty bolt pan assembly made of thicker steel. The bolt pan acts as a reinforcement element that provides burglary resistance while allowing the main door structure to remain lightweight and cost-effective. This composite approach resolves the contradiction by distributing structural requirements across different materials and components.
Solution Approach 2:
The safe door system is segmented into distinct functional components: the light gauge steel door panel for basic structure and aesthetics, and a separate heavy-duty bolt pan assembly for security. This segmentation allows each component to be optimized independently - the door panel for cost and weight, and the bolt pan for strength and burglary resistance.
2Device complexity
If traditional bolt mechanisms are used with limited contact area, then device complexity is reduced, but resistance to pry attacks deteriorates
Solution Approach 1:
The patent transitions from a traditional point-contact or line-contact bolt mechanism to a large-area surface contact system. The bolt pan provides extensive contact area with the door jamb across multiple dimensions, creating a distributed locking interface that resists pry attacks through broad surface engagement rather than concentrated force points.
Solution Approach 2:
The bolt pan is designed to move laterally within its recess upon actuation, transforming from a static fixed-position bolt to a dynamic movable component. This lateral movement capability allows the entire bolt pan assembly to engage or disengage as a unit, providing enhanced security during the locking transition while maintaining simplicity in the actuation mechanism.
3Strength
If the entire bolt pan is made movable laterally, then resistance to pry attacks is increased and security is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the bolt pan with the door slab by securing the bolt pan directly to the door, creating a unified movable assembly. This integration eliminates the need for separate mounting mechanisms and simplifies the overall structure while maintaining the lateral movement capability for enhanced security.
Solution Approach 2:
The bolt pan utilizes the door's own movement and structure to achieve its locking and unlocking functions. The lateral movement is accomplished through the interaction between the bolt pan's leading edge and the door jamb, leveraging the door's rigid structure as part of the locking mechanism rather than requiring additional active components.
Data Source
AI summary
Disclosed herein is a movable bolt pan in which the bolt pan frame is secured directly to a safe door. The positions of securement of the bolt pan frame to the safe door are spread across a large percentage of the door slab. An entirety of the leading edge of the movable bolt pan contacts the door jamb of the safe when the movable bolt pan is in the closed position. A handle on an exterior of the safe door can be used to slide the movable bolt pan laterally from the closed position to the open position, allowing the safe to be opened.