Hinge Detent Device for Anti-Tamper Door Security
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Solution Overview
Problem
Standard doors offer inadequate security as they can be easily picked or forced open, despite common locking devices being prone to vulnerabilities.
Innovation Solution
A rigid detent device is attached to the hinge of a door, comprising a back panel, stop bracket, and slotted hole, which prevents the door from being opened by leveraging the door and doorframe with a pressing rod and rod-engagement mechanism, ensuring the device cannot be disengaged or removed from the inside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard locks are used on doors, then the door can be opened with basic locking functionality, but the door remains vulnerable to picking and forcing
Solution Approach 1:
The invention divides the security system into two independent parts: the existing lock mechanism and the new detent device attached to the hinge. The detent device includes separate components (detent member, actuating mechanism, mounting bracket) that work independently from the lock, providing security through hinge control rather than through the lock itself. This segmentation allows the door to maintain basic locking functionality while adding hinge-based security prevention against picking and forcing.
2Reliability
If a detent device is attached to the hinge to prevent door opening, then security is enhanced, but the device must be installed on the inside of the door which limits accessibility
Solution Approach 1:
The detent device is designed with an actuating mechanism that allows the user to control the detent member's engagement and disengagement from the hinge pin. The actuating mechanism includes features such as a cam, lever, or button that the user can operate from the inside of the door to securely engage or release the hinge, making the device self-sufficient and easy to operate without requiring external intervention.
3Reliability
If the detent device is placed on the inside of the door hinge, then it prevents disengagement by intruders, but it requires installation access from the inside
Solution Approach 1:
The detent device is designed to be pre-assembled as a complete unit or pre-configured with the detent member, actuating mechanism, and mounting bracket before installation. This preliminary assembly allows the device to be installed efficiently from the inside of the door by simply mounting the pre-assembled unit onto the hinge, eliminating the need for complex internal wiring or component-by-component assembly during installation.
Data Source
AI summary
A security apparatus that functions as a detent which inhibits the motion of a door hinge. This security apparatus includes a back panel, a stop bracket, and a slotted hole. The back panel is a rigid plate that functions as a bar that inhibits the motion of a door. The back panel has a first panel edge and a second panel edge. The first panel edge and the second panel edge are edged are located at opposite ends of the back panel, forming it's the physical boundaries of the back panel. The stop bracket is a rigid beam that is connected to the first panel edge of the back panel. This enables the stop bracket to limit the distance a door hinge may travel through the slotted hole. The slotted hole is cut into the back panel from the second panel edge to next to the stop bracket.