Hinge Locking Plate for Door Alignment and Tamper Resistance
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Solution Overview
Problem
Existing mechanisms for attaching a door to a toolbox with hinges often result in misalignment during installation and can be easily compromised by removing the hinges for unauthorized access, compromising security.
Innovation Solution
A hinge-mounting apparatus featuring a securing plate with threaded holes and adjustable fasteners allows for precise alignment and secure locking of the hinge in place, preventing removal without access to both sides of the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If locking fasteners are used to connect hinge leaves to the door or box from the inside, then hinge removal is prevented, but alignment of the door with the box during installation becomes cumbersome and often results in misalignment
Solution Approach 1:
The fastening system is divided into two distinct phases: a preliminary alignment phase using simple fasteners that allow adjustment, and a final locking phase using secure fasteners that prevent removal. This segmentation allows the installation process to benefit from both ease of alignment and ultimate security.
Solution Approach 2:
The installation process performs preliminary alignment actions first, using simple fasteners that enable easy adjustment and positioning. Only after the door and box are properly aligned do the installers proceed to the final locking action, ensuring both alignment accuracy and hinge security.
2Ease of operation
If simple fasteners are used to attach hinges, then alignment is easier, but the hinges can be easily removed compromising security
Solution Approach 1:
The fastening system is divided into two distinct phases: a preliminary alignment phase using simple fasteners that allow adjustment, and a final locking phase using secure fasteners that prevent removal. This segmentation allows the installation process to benefit from both ease of alignment and ultimate security.
Solution Approach 2:
The installation process performs preliminary alignment actions first, using simple fasteners that enable easy adjustment and positioning. Only after the door and box are properly aligned do the installers proceed to the final locking action, ensuring both alignment accuracy and hinge security.
3Reliability
If locking fasteners are installed on both sides of the workpiece, then hinge removal is prevented, but access to both sides is required making installation complex
Solution Approach 1:
The fastening system is divided into two distinct phases: a preliminary alignment phase using simple fasteners that allow adjustment, and a final locking phase using secure fasteners that prevent removal. This segmentation allows the installation process to benefit from both ease of alignment and ultimate security.
Solution Approach 2:
The installation process performs preliminary alignment actions first, using simple fasteners that enable easy adjustment and positioning. Only after the door and box are properly aligned do the installers proceed to the final locking action, ensuring both alignment accuracy and hinge security.
Data Source
AI summary
A hinge-locking system includes a securing plate configured with at least two threaded holes corresponding to mounting holes of a hinge leaf, at least two conventional threaded fasteners (removable fasteners), and at least one locking threaded fastener (an irremovable fastener). A hinge leaf is mounted to a workpiece by placing the securing plate on the opposite side of the workpiece from the leaf, inserting conventional threaded fasteners (e.g., bolt) through mounting holes in the leaf and in the workpiece and into the threaded holes of the securing plate, adjusting the leaf relative to the workpiece for proper alignment, tightening the conventional fasteners to hold the leaf in place, and then using a locking fastener (e.g., bolt with locknut) to lock the leaf to the workpiece such that the leaf cannot be removed without access to the securing-plate side of the workpiece.