T-Shaped Rod Anti-Locking Device for Emergency Door Safety
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Solution Overview
Problem
Existing door locking mechanisms are inefficient and burdensome, particularly in emergency situations like active shooter scenarios, where doors need to be locked quickly, and there is a need for a solution that does not require replacing existing doors or using high-tech gadgets that are financially impractical for public schools.
Innovation Solution
An anti-locking device with a T-shaped rod that moves laterally within an inverted U-shaped channel, allowing for easy transition between locking and unlocking configurations without physically reaching outside the door, and can be attached to either the door or doorframe, ensuring doors remain open without altering the door's locked state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional locking mechanisms are used, then doors can be secured, but the operation becomes time-consuming and burdensome
Solution Approach 1:
The invention extracts the anti-locking function from the traditional locking mechanism. Instead of modifying the existing lock, a separate T-shaped rod device is introduced that independently prevents the door from closing, thereby separating the security function from the time-consuming locking operation.
Solution Approach 2:
The door security system is segmented into two independent components: the original locking mechanism and the new anti-locking device. This segmentation allows each component to perform its specific function efficiently - the lock provides security while the T-shaped rod prevents accidental opening, eliminating the need for repeated locking/unlocking operations.
2Reliability
If doors are kept locked for safety, then security is improved, but accessibility and emergency egress are compromised
Solution Approach 1:
The T-shaped rod acts as an intermediary device between the locked door and the user. It provides a simple mechanical means to prevent door closing without requiring key manipulation or complex operations, thereby maintaining security while enabling easy accessibility when needed.
3Productivity
If high-tech locking gadgets are used, then locking efficiency is improved, but cost becomes prohibitive for public schools
Solution Approach 1:
The invention employs simple, inexpensive materials for the T-shaped rod and mounting bracket that can be easily manufactured and installed. The design uses basic mechanical components rather than expensive electronic systems, making it financially viable for public schools while maintaining high locking efficiency.
4Ease of operation
If doorstopper devices are used to hold doors open, then accessibility is improved, but reliability decreases due to potential accidental displacement
Solution Approach 1:
The T-shaped rod design creates an asymmetric engagement mechanism where the rod fits into a specifically shaped channel in the door frame. This asymmetric geometry prevents accidental displacement while allowing intentional removal, thereby maintaining both accessibility and reliability.
Data Source
AI summary
An anti-locking device comprising a body with an inverted U-shaped channel wherein a T-shaped rod sits and can move laterally when rotated at certain configurations within the U-shaped channel, such that the T-shaped rod can move from an obstructing configuration and to an non-obstruction configuration, and vice versa. The anti-locking device is preferably attachable to a hinged door and the T-shaped rod is able to move laterally in the body of the anti-locking device. In an obstructing configuration, one end of the T-shaped rod would sit between a door and its corresponding doorframe to keep the door from closing, and in a non-obstructing configuration, the T-shaped rod would not sit between the door and the doorframe, allowing the door to close.